mirror of https://gitee.com/openkylin/linux.git
5965 lines
161 KiB
C
5965 lines
161 KiB
C
/*
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* Copyright (c) 2006-2008 Intel Corporation
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* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
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* Copyright (c) 2008 Red Hat Inc.
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*
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* DRM core CRTC related functions
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*
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* Authors:
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* Keith Packard
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* Eric Anholt <eric@anholt.net>
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* Dave Airlie <airlied@linux.ie>
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* Jesse Barnes <jesse.barnes@intel.com>
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*/
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#include <linux/ctype.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/export.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_edid.h>
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#include <drm/drm_fourcc.h>
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#include <drm/drm_modeset_lock.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_auth.h>
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#include "drm_crtc_internal.h"
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#include "drm_internal.h"
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static struct drm_framebuffer *
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internal_framebuffer_create(struct drm_device *dev,
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const struct drm_mode_fb_cmd2 *r,
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struct drm_file *file_priv);
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/* Avoid boilerplate. I'm tired of typing. */
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#define DRM_ENUM_NAME_FN(fnname, list) \
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const char *fnname(int val) \
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{ \
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int i; \
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for (i = 0; i < ARRAY_SIZE(list); i++) { \
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if (list[i].type == val) \
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return list[i].name; \
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} \
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return "(unknown)"; \
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}
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/*
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* Global properties
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*/
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static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
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{ DRM_MODE_DPMS_ON, "On" },
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{ DRM_MODE_DPMS_STANDBY, "Standby" },
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{ DRM_MODE_DPMS_SUSPEND, "Suspend" },
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{ DRM_MODE_DPMS_OFF, "Off" }
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};
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DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
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static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
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{ DRM_PLANE_TYPE_OVERLAY, "Overlay" },
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{ DRM_PLANE_TYPE_PRIMARY, "Primary" },
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{ DRM_PLANE_TYPE_CURSOR, "Cursor" },
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};
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/*
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* Optional properties
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*/
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static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
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{ DRM_MODE_SCALE_NONE, "None" },
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{ DRM_MODE_SCALE_FULLSCREEN, "Full" },
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{ DRM_MODE_SCALE_CENTER, "Center" },
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{ DRM_MODE_SCALE_ASPECT, "Full aspect" },
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};
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static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
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{ DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
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{ DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
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{ DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
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};
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/*
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* Non-global properties, but "required" for certain connectors.
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*/
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static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
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{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
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{ DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
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{ DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
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};
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DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
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static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
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{ DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
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{ DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
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{ DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
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};
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DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
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drm_dvi_i_subconnector_enum_list)
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static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
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{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
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{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
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{ DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
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{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
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{ DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
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};
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DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
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static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
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{ DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
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{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
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{ DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
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{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
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{ DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
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};
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DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
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drm_tv_subconnector_enum_list)
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static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
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{ DRM_MODE_DIRTY_OFF, "Off" },
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{ DRM_MODE_DIRTY_ON, "On" },
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{ DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
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};
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struct drm_conn_prop_enum_list {
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int type;
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const char *name;
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struct ida ida;
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};
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/*
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* Connector and encoder types.
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*/
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static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
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{ DRM_MODE_CONNECTOR_Unknown, "Unknown" },
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{ DRM_MODE_CONNECTOR_VGA, "VGA" },
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{ DRM_MODE_CONNECTOR_DVII, "DVI-I" },
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{ DRM_MODE_CONNECTOR_DVID, "DVI-D" },
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{ DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
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{ DRM_MODE_CONNECTOR_Composite, "Composite" },
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{ DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
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{ DRM_MODE_CONNECTOR_LVDS, "LVDS" },
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{ DRM_MODE_CONNECTOR_Component, "Component" },
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{ DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
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{ DRM_MODE_CONNECTOR_DisplayPort, "DP" },
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{ DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
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{ DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
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{ DRM_MODE_CONNECTOR_TV, "TV" },
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{ DRM_MODE_CONNECTOR_eDP, "eDP" },
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{ DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
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{ DRM_MODE_CONNECTOR_DSI, "DSI" },
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{ DRM_MODE_CONNECTOR_DPI, "DPI" },
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};
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static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
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{ DRM_MODE_ENCODER_NONE, "None" },
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{ DRM_MODE_ENCODER_DAC, "DAC" },
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{ DRM_MODE_ENCODER_TMDS, "TMDS" },
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{ DRM_MODE_ENCODER_LVDS, "LVDS" },
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{ DRM_MODE_ENCODER_TVDAC, "TV" },
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{ DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
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{ DRM_MODE_ENCODER_DSI, "DSI" },
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{ DRM_MODE_ENCODER_DPMST, "DP MST" },
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{ DRM_MODE_ENCODER_DPI, "DPI" },
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};
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static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
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{ SubPixelUnknown, "Unknown" },
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{ SubPixelHorizontalRGB, "Horizontal RGB" },
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{ SubPixelHorizontalBGR, "Horizontal BGR" },
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{ SubPixelVerticalRGB, "Vertical RGB" },
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{ SubPixelVerticalBGR, "Vertical BGR" },
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{ SubPixelNone, "None" },
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};
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void drm_connector_ida_init(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
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ida_init(&drm_connector_enum_list[i].ida);
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}
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void drm_connector_ida_destroy(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
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ida_destroy(&drm_connector_enum_list[i].ida);
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}
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/**
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* drm_get_connector_status_name - return a string for connector status
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* @status: connector status to compute name of
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*
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* In contrast to the other drm_get_*_name functions this one here returns a
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* const pointer and hence is threadsafe.
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*/
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const char *drm_get_connector_status_name(enum drm_connector_status status)
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{
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if (status == connector_status_connected)
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return "connected";
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else if (status == connector_status_disconnected)
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return "disconnected";
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else
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return "unknown";
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}
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EXPORT_SYMBOL(drm_get_connector_status_name);
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/**
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* drm_get_subpixel_order_name - return a string for a given subpixel enum
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* @order: enum of subpixel_order
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*
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* Note you could abuse this and return something out of bounds, but that
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* would be a caller error. No unscrubbed user data should make it here.
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*/
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const char *drm_get_subpixel_order_name(enum subpixel_order order)
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{
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return drm_subpixel_enum_list[order].name;
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}
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EXPORT_SYMBOL(drm_get_subpixel_order_name);
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/*
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* Internal function to assign a slot in the object idr and optionally
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* register the object into the idr.
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*/
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static int drm_mode_object_get_reg(struct drm_device *dev,
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struct drm_mode_object *obj,
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uint32_t obj_type,
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bool register_obj,
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void (*obj_free_cb)(struct kref *kref))
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{
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int ret;
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mutex_lock(&dev->mode_config.idr_mutex);
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ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
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if (ret >= 0) {
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/*
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* Set up the object linking under the protection of the idr
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* lock so that other users can't see inconsistent state.
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*/
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obj->id = ret;
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obj->type = obj_type;
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if (obj_free_cb) {
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obj->free_cb = obj_free_cb;
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kref_init(&obj->refcount);
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}
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}
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mutex_unlock(&dev->mode_config.idr_mutex);
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return ret < 0 ? ret : 0;
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}
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/**
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* drm_mode_object_get - allocate a new modeset identifier
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* @dev: DRM device
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* @obj: object pointer, used to generate unique ID
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* @obj_type: object type
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*
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* Create a unique identifier based on @ptr in @dev's identifier space. Used
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* for tracking modes, CRTCs and connectors. Note that despite the _get postfix
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* modeset identifiers are _not_ reference counted. Hence don't use this for
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* reference counted modeset objects like framebuffers.
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_mode_object_get(struct drm_device *dev,
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struct drm_mode_object *obj, uint32_t obj_type)
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{
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return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
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}
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static void drm_mode_object_register(struct drm_device *dev,
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struct drm_mode_object *obj)
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{
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mutex_lock(&dev->mode_config.idr_mutex);
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idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
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mutex_unlock(&dev->mode_config.idr_mutex);
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}
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/**
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* drm_mode_object_unregister - free a modeset identifer
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* @dev: DRM device
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* @object: object to free
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*
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* Free @id from @dev's unique identifier pool.
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* This function can be called multiple times, and guards against
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* multiple removals.
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* These modeset identifiers are _not_ reference counted. Hence don't use this
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* for reference counted modeset objects like framebuffers.
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*/
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void drm_mode_object_unregister(struct drm_device *dev,
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struct drm_mode_object *object)
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{
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mutex_lock(&dev->mode_config.idr_mutex);
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if (object->id) {
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idr_remove(&dev->mode_config.crtc_idr, object->id);
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object->id = 0;
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}
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mutex_unlock(&dev->mode_config.idr_mutex);
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}
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static struct drm_mode_object *_object_find(struct drm_device *dev,
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uint32_t id, uint32_t type)
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{
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struct drm_mode_object *obj = NULL;
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mutex_lock(&dev->mode_config.idr_mutex);
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obj = idr_find(&dev->mode_config.crtc_idr, id);
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if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
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obj = NULL;
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if (obj && obj->id != id)
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obj = NULL;
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if (obj && obj->free_cb) {
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if (!kref_get_unless_zero(&obj->refcount))
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obj = NULL;
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}
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mutex_unlock(&dev->mode_config.idr_mutex);
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return obj;
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}
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/**
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* drm_mode_object_find - look up a drm object with static lifetime
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* @dev: drm device
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* @id: id of the mode object
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* @type: type of the mode object
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*
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* This function is used to look up a modeset object. It will acquire a
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* reference for reference counted objects. This reference must be dropped again
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* by callind drm_mode_object_unreference().
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*/
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struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
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uint32_t id, uint32_t type)
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{
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struct drm_mode_object *obj = NULL;
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obj = _object_find(dev, id, type);
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return obj;
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}
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EXPORT_SYMBOL(drm_mode_object_find);
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/**
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* drm_mode_object_unreference - decr the object refcnt
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* @obj: mode_object
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*
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* This functions decrements the object's refcount if it is a refcounted modeset
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* object. It is a no-op on any other object. This is used to drop references
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* acquired with drm_mode_object_reference().
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*/
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void drm_mode_object_unreference(struct drm_mode_object *obj)
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{
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if (obj->free_cb) {
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DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
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kref_put(&obj->refcount, obj->free_cb);
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}
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}
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EXPORT_SYMBOL(drm_mode_object_unreference);
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/**
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* drm_mode_object_reference - incr the object refcnt
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* @obj: mode_object
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*
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* This functions increments the object's refcount if it is a refcounted modeset
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* object. It is a no-op on any other object. References should be dropped again
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* by calling drm_mode_object_unreference().
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*/
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void drm_mode_object_reference(struct drm_mode_object *obj)
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{
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if (obj->free_cb) {
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DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
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kref_get(&obj->refcount);
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}
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}
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EXPORT_SYMBOL(drm_mode_object_reference);
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/**
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* drm_crtc_force_disable - Forcibly turn off a CRTC
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* @crtc: CRTC to turn off
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_crtc_force_disable(struct drm_crtc *crtc)
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{
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struct drm_mode_set set = {
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.crtc = crtc,
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};
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return drm_mode_set_config_internal(&set);
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}
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EXPORT_SYMBOL(drm_crtc_force_disable);
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/**
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* drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs
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* @dev: DRM device whose CRTCs to turn off
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*
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* Drivers may want to call this on unload to ensure that all displays are
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* unlit and the GPU is in a consistent, low power state. Takes modeset locks.
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_crtc_force_disable_all(struct drm_device *dev)
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{
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struct drm_crtc *crtc;
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int ret = 0;
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drm_modeset_lock_all(dev);
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drm_for_each_crtc(crtc, dev)
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if (crtc->enabled) {
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ret = drm_crtc_force_disable(crtc);
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if (ret)
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goto out;
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}
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out:
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drm_modeset_unlock_all(dev);
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return ret;
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}
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EXPORT_SYMBOL(drm_crtc_force_disable_all);
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static void drm_framebuffer_free(struct kref *kref)
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{
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struct drm_framebuffer *fb =
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container_of(kref, struct drm_framebuffer, base.refcount);
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struct drm_device *dev = fb->dev;
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|
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/*
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* The lookup idr holds a weak reference, which has not necessarily been
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* removed at this point. Check for that.
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*/
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drm_mode_object_unregister(dev, &fb->base);
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fb->funcs->destroy(fb);
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}
|
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|
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/**
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* drm_framebuffer_init - initialize a framebuffer
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* @dev: DRM device
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* @fb: framebuffer to be initialized
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* @funcs: ... with these functions
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*
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* Allocates an ID for the framebuffer's parent mode object, sets its mode
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* functions & device file and adds it to the master fd list.
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*
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* IMPORTANT:
|
|
* This functions publishes the fb and makes it available for concurrent access
|
|
* by other users. Which means by this point the fb _must_ be fully set up -
|
|
* since all the fb attributes are invariant over its lifetime, no further
|
|
* locking but only correct reference counting is required.
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
|
|
const struct drm_framebuffer_funcs *funcs)
|
|
{
|
|
int ret;
|
|
|
|
INIT_LIST_HEAD(&fb->filp_head);
|
|
fb->dev = dev;
|
|
fb->funcs = funcs;
|
|
|
|
ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
|
|
false, drm_framebuffer_free);
|
|
if (ret)
|
|
goto out;
|
|
|
|
mutex_lock(&dev->mode_config.fb_lock);
|
|
dev->mode_config.num_fb++;
|
|
list_add(&fb->head, &dev->mode_config.fb_list);
|
|
mutex_unlock(&dev->mode_config.fb_lock);
|
|
|
|
drm_mode_object_register(dev, &fb->base);
|
|
out:
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_framebuffer_init);
|
|
|
|
/**
|
|
* drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
|
|
* @dev: drm device
|
|
* @id: id of the fb object
|
|
*
|
|
* If successful, this grabs an additional reference to the framebuffer -
|
|
* callers need to make sure to eventually unreference the returned framebuffer
|
|
* again, using @drm_framebuffer_unreference.
|
|
*/
|
|
struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
|
|
uint32_t id)
|
|
{
|
|
struct drm_mode_object *obj;
|
|
struct drm_framebuffer *fb = NULL;
|
|
|
|
obj = _object_find(dev, id, DRM_MODE_OBJECT_FB);
|
|
if (obj)
|
|
fb = obj_to_fb(obj);
|
|
return fb;
|
|
}
|
|
EXPORT_SYMBOL(drm_framebuffer_lookup);
|
|
|
|
/**
|
|
* drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
|
|
* @fb: fb to unregister
|
|
*
|
|
* Drivers need to call this when cleaning up driver-private framebuffers, e.g.
|
|
* those used for fbdev. Note that the caller must hold a reference of it's own,
|
|
* i.e. the object may not be destroyed through this call (since it'll lead to a
|
|
* locking inversion).
|
|
*/
|
|
void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
|
|
{
|
|
struct drm_device *dev;
|
|
|
|
if (!fb)
|
|
return;
|
|
|
|
dev = fb->dev;
|
|
|
|
/* Mark fb as reaped and drop idr ref. */
|
|
drm_mode_object_unregister(dev, &fb->base);
|
|
}
|
|
EXPORT_SYMBOL(drm_framebuffer_unregister_private);
|
|
|
|
/**
|
|
* drm_framebuffer_cleanup - remove a framebuffer object
|
|
* @fb: framebuffer to remove
|
|
*
|
|
* Cleanup framebuffer. This function is intended to be used from the drivers
|
|
* ->destroy callback. It can also be used to clean up driver private
|
|
* framebuffers embedded into a larger structure.
|
|
*
|
|
* Note that this function does not remove the fb from active usuage - if it is
|
|
* still used anywhere, hilarity can ensue since userspace could call getfb on
|
|
* the id and get back -EINVAL. Obviously no concern at driver unload time.
|
|
*
|
|
* Also, the framebuffer will not be removed from the lookup idr - for
|
|
* user-created framebuffers this will happen in in the rmfb ioctl. For
|
|
* driver-private objects (e.g. for fbdev) drivers need to explicitly call
|
|
* drm_framebuffer_unregister_private.
|
|
*/
|
|
void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
|
|
{
|
|
struct drm_device *dev = fb->dev;
|
|
|
|
mutex_lock(&dev->mode_config.fb_lock);
|
|
list_del(&fb->head);
|
|
dev->mode_config.num_fb--;
|
|
mutex_unlock(&dev->mode_config.fb_lock);
|
|
}
|
|
EXPORT_SYMBOL(drm_framebuffer_cleanup);
|
|
|
|
/**
|
|
* drm_framebuffer_remove - remove and unreference a framebuffer object
|
|
* @fb: framebuffer to remove
|
|
*
|
|
* Scans all the CRTCs and planes in @dev's mode_config. If they're
|
|
* using @fb, removes it, setting it to NULL. Then drops the reference to the
|
|
* passed-in framebuffer. Might take the modeset locks.
|
|
*
|
|
* Note that this function optimizes the cleanup away if the caller holds the
|
|
* last reference to the framebuffer. It is also guaranteed to not take the
|
|
* modeset locks in this case.
|
|
*/
|
|
void drm_framebuffer_remove(struct drm_framebuffer *fb)
|
|
{
|
|
struct drm_device *dev;
|
|
struct drm_crtc *crtc;
|
|
struct drm_plane *plane;
|
|
|
|
if (!fb)
|
|
return;
|
|
|
|
dev = fb->dev;
|
|
|
|
WARN_ON(!list_empty(&fb->filp_head));
|
|
|
|
/*
|
|
* drm ABI mandates that we remove any deleted framebuffers from active
|
|
* useage. But since most sane clients only remove framebuffers they no
|
|
* longer need, try to optimize this away.
|
|
*
|
|
* Since we're holding a reference ourselves, observing a refcount of 1
|
|
* means that we're the last holder and can skip it. Also, the refcount
|
|
* can never increase from 1 again, so we don't need any barriers or
|
|
* locks.
|
|
*
|
|
* Note that userspace could try to race with use and instate a new
|
|
* usage _after_ we've cleared all current ones. End result will be an
|
|
* in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
|
|
* in this manner.
|
|
*/
|
|
if (drm_framebuffer_read_refcount(fb) > 1) {
|
|
if (dev->mode_config.funcs->atomic_commit) {
|
|
drm_atomic_remove_fb(fb);
|
|
goto out;
|
|
}
|
|
|
|
drm_modeset_lock_all(dev);
|
|
/* remove from any CRTC */
|
|
drm_for_each_crtc(crtc, dev) {
|
|
if (crtc->primary->fb == fb) {
|
|
/* should turn off the crtc */
|
|
if (drm_crtc_force_disable(crtc))
|
|
DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
|
|
}
|
|
}
|
|
|
|
drm_for_each_plane(plane, dev) {
|
|
if (plane->fb == fb)
|
|
drm_plane_force_disable(plane);
|
|
}
|
|
drm_modeset_unlock_all(dev);
|
|
}
|
|
|
|
out:
|
|
drm_framebuffer_unreference(fb);
|
|
}
|
|
EXPORT_SYMBOL(drm_framebuffer_remove);
|
|
|
|
DEFINE_WW_CLASS(crtc_ww_class);
|
|
|
|
static unsigned int drm_num_crtcs(struct drm_device *dev)
|
|
{
|
|
unsigned int num = 0;
|
|
struct drm_crtc *tmp;
|
|
|
|
drm_for_each_crtc(tmp, dev) {
|
|
num++;
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
static int drm_crtc_register_all(struct drm_device *dev)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
int ret = 0;
|
|
|
|
drm_for_each_crtc(crtc, dev) {
|
|
if (crtc->funcs->late_register)
|
|
ret = crtc->funcs->late_register(crtc);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void drm_crtc_unregister_all(struct drm_device *dev)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
|
|
drm_for_each_crtc(crtc, dev) {
|
|
if (crtc->funcs->early_unregister)
|
|
crtc->funcs->early_unregister(crtc);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* drm_crtc_init_with_planes - Initialise a new CRTC object with
|
|
* specified primary and cursor planes.
|
|
* @dev: DRM device
|
|
* @crtc: CRTC object to init
|
|
* @primary: Primary plane for CRTC
|
|
* @cursor: Cursor plane for CRTC
|
|
* @funcs: callbacks for the new CRTC
|
|
* @name: printf style format string for the CRTC name, or NULL for default name
|
|
*
|
|
* Inits a new object created as base part of a driver crtc object.
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
|
|
struct drm_plane *primary,
|
|
struct drm_plane *cursor,
|
|
const struct drm_crtc_funcs *funcs,
|
|
const char *name, ...)
|
|
{
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
int ret;
|
|
|
|
WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
|
|
WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
|
|
|
|
crtc->dev = dev;
|
|
crtc->funcs = funcs;
|
|
|
|
INIT_LIST_HEAD(&crtc->commit_list);
|
|
spin_lock_init(&crtc->commit_lock);
|
|
|
|
drm_modeset_lock_init(&crtc->mutex);
|
|
ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (name) {
|
|
va_list ap;
|
|
|
|
va_start(ap, name);
|
|
crtc->name = kvasprintf(GFP_KERNEL, name, ap);
|
|
va_end(ap);
|
|
} else {
|
|
crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
|
|
drm_num_crtcs(dev));
|
|
}
|
|
if (!crtc->name) {
|
|
drm_mode_object_unregister(dev, &crtc->base);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
crtc->base.properties = &crtc->properties;
|
|
|
|
list_add_tail(&crtc->head, &config->crtc_list);
|
|
crtc->index = config->num_crtc++;
|
|
|
|
crtc->primary = primary;
|
|
crtc->cursor = cursor;
|
|
if (primary)
|
|
primary->possible_crtcs = 1 << drm_crtc_index(crtc);
|
|
if (cursor)
|
|
cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
|
|
drm_object_attach_property(&crtc->base, config->prop_active, 0);
|
|
drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_crtc_init_with_planes);
|
|
|
|
/**
|
|
* drm_crtc_cleanup - Clean up the core crtc usage
|
|
* @crtc: CRTC to cleanup
|
|
*
|
|
* This function cleans up @crtc and removes it from the DRM mode setting
|
|
* core. Note that the function does *not* free the crtc structure itself,
|
|
* this is the responsibility of the caller.
|
|
*/
|
|
void drm_crtc_cleanup(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
|
|
/* Note that the crtc_list is considered to be static; should we
|
|
* remove the drm_crtc at runtime we would have to decrement all
|
|
* the indices on the drm_crtc after us in the crtc_list.
|
|
*/
|
|
|
|
kfree(crtc->gamma_store);
|
|
crtc->gamma_store = NULL;
|
|
|
|
drm_modeset_lock_fini(&crtc->mutex);
|
|
|
|
drm_mode_object_unregister(dev, &crtc->base);
|
|
list_del(&crtc->head);
|
|
dev->mode_config.num_crtc--;
|
|
|
|
WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
|
|
if (crtc->state && crtc->funcs->atomic_destroy_state)
|
|
crtc->funcs->atomic_destroy_state(crtc, crtc->state);
|
|
|
|
kfree(crtc->name);
|
|
|
|
memset(crtc, 0, sizeof(*crtc));
|
|
}
|
|
EXPORT_SYMBOL(drm_crtc_cleanup);
|
|
|
|
/*
|
|
* drm_mode_remove - remove and free a mode
|
|
* @connector: connector list to modify
|
|
* @mode: mode to remove
|
|
*
|
|
* Remove @mode from @connector's mode list, then free it.
|
|
*/
|
|
static void drm_mode_remove(struct drm_connector *connector,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
list_del(&mode->head);
|
|
drm_mode_destroy(connector->dev, mode);
|
|
}
|
|
|
|
/**
|
|
* drm_display_info_set_bus_formats - set the supported bus formats
|
|
* @info: display info to store bus formats in
|
|
* @formats: array containing the supported bus formats
|
|
* @num_formats: the number of entries in the fmts array
|
|
*
|
|
* Store the supported bus formats in display info structure.
|
|
* See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
|
|
* a full list of available formats.
|
|
*/
|
|
int drm_display_info_set_bus_formats(struct drm_display_info *info,
|
|
const u32 *formats,
|
|
unsigned int num_formats)
|
|
{
|
|
u32 *fmts = NULL;
|
|
|
|
if (!formats && num_formats)
|
|
return -EINVAL;
|
|
|
|
if (formats && num_formats) {
|
|
fmts = kmemdup(formats, sizeof(*formats) * num_formats,
|
|
GFP_KERNEL);
|
|
if (!fmts)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
kfree(info->bus_formats);
|
|
info->bus_formats = fmts;
|
|
info->num_bus_formats = num_formats;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_display_info_set_bus_formats);
|
|
|
|
/**
|
|
* drm_connector_get_cmdline_mode - reads the user's cmdline mode
|
|
* @connector: connector to quwery
|
|
*
|
|
* The kernel supports per-connector configration of its consoles through
|
|
* use of the video= parameter. This function parses that option and
|
|
* extracts the user's specified mode (or enable/disable status) for a
|
|
* particular connector. This is typically only used during the early fbdev
|
|
* setup.
|
|
*/
|
|
static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
|
|
{
|
|
struct drm_cmdline_mode *mode = &connector->cmdline_mode;
|
|
char *option = NULL;
|
|
|
|
if (fb_get_options(connector->name, &option))
|
|
return;
|
|
|
|
if (!drm_mode_parse_command_line_for_connector(option,
|
|
connector,
|
|
mode))
|
|
return;
|
|
|
|
if (mode->force) {
|
|
const char *s;
|
|
|
|
switch (mode->force) {
|
|
case DRM_FORCE_OFF:
|
|
s = "OFF";
|
|
break;
|
|
case DRM_FORCE_ON_DIGITAL:
|
|
s = "ON - dig";
|
|
break;
|
|
default:
|
|
case DRM_FORCE_ON:
|
|
s = "ON";
|
|
break;
|
|
}
|
|
|
|
DRM_INFO("forcing %s connector %s\n", connector->name, s);
|
|
connector->force = mode->force;
|
|
}
|
|
|
|
DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
|
|
connector->name,
|
|
mode->xres, mode->yres,
|
|
mode->refresh_specified ? mode->refresh : 60,
|
|
mode->rb ? " reduced blanking" : "",
|
|
mode->margins ? " with margins" : "",
|
|
mode->interlace ? " interlaced" : "");
|
|
}
|
|
|
|
static void drm_connector_free(struct kref *kref)
|
|
{
|
|
struct drm_connector *connector =
|
|
container_of(kref, struct drm_connector, base.refcount);
|
|
struct drm_device *dev = connector->dev;
|
|
|
|
drm_mode_object_unregister(dev, &connector->base);
|
|
connector->funcs->destroy(connector);
|
|
}
|
|
|
|
/**
|
|
* drm_connector_init - Init a preallocated connector
|
|
* @dev: DRM device
|
|
* @connector: the connector to init
|
|
* @funcs: callbacks for this connector
|
|
* @connector_type: user visible type of the connector
|
|
*
|
|
* Initialises a preallocated connector. Connectors should be
|
|
* subclassed as part of driver connector objects.
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_connector_init(struct drm_device *dev,
|
|
struct drm_connector *connector,
|
|
const struct drm_connector_funcs *funcs,
|
|
int connector_type)
|
|
{
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
int ret;
|
|
struct ida *connector_ida =
|
|
&drm_connector_enum_list[connector_type].ida;
|
|
|
|
drm_modeset_lock_all(dev);
|
|
|
|
ret = drm_mode_object_get_reg(dev, &connector->base,
|
|
DRM_MODE_OBJECT_CONNECTOR,
|
|
false, drm_connector_free);
|
|
if (ret)
|
|
goto out_unlock;
|
|
|
|
connector->base.properties = &connector->properties;
|
|
connector->dev = dev;
|
|
connector->funcs = funcs;
|
|
|
|
connector->connector_id = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL);
|
|
if (connector->connector_id < 0) {
|
|
ret = connector->connector_id;
|
|
goto out_put;
|
|
}
|
|
|
|
connector->connector_type = connector_type;
|
|
connector->connector_type_id =
|
|
ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
|
|
if (connector->connector_type_id < 0) {
|
|
ret = connector->connector_type_id;
|
|
goto out_put_id;
|
|
}
|
|
connector->name =
|
|
kasprintf(GFP_KERNEL, "%s-%d",
|
|
drm_connector_enum_list[connector_type].name,
|
|
connector->connector_type_id);
|
|
if (!connector->name) {
|
|
ret = -ENOMEM;
|
|
goto out_put_type_id;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&connector->probed_modes);
|
|
INIT_LIST_HEAD(&connector->modes);
|
|
connector->edid_blob_ptr = NULL;
|
|
connector->status = connector_status_unknown;
|
|
|
|
drm_connector_get_cmdline_mode(connector);
|
|
|
|
/* We should add connectors at the end to avoid upsetting the connector
|
|
* index too much. */
|
|
list_add_tail(&connector->head, &config->connector_list);
|
|
config->num_connector++;
|
|
|
|
if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
|
|
drm_object_attach_property(&connector->base,
|
|
config->edid_property,
|
|
0);
|
|
|
|
drm_object_attach_property(&connector->base,
|
|
config->dpms_property, 0);
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
|
|
drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
|
|
}
|
|
|
|
connector->debugfs_entry = NULL;
|
|
out_put_type_id:
|
|
if (ret)
|
|
ida_remove(connector_ida, connector->connector_type_id);
|
|
out_put_id:
|
|
if (ret)
|
|
ida_remove(&config->connector_ida, connector->connector_id);
|
|
out_put:
|
|
if (ret)
|
|
drm_mode_object_unregister(dev, &connector->base);
|
|
|
|
out_unlock:
|
|
drm_modeset_unlock_all(dev);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_init);
|
|
|
|
/**
|
|
* drm_connector_cleanup - cleans up an initialised connector
|
|
* @connector: connector to cleanup
|
|
*
|
|
* Cleans up the connector but doesn't free the object.
|
|
*/
|
|
void drm_connector_cleanup(struct drm_connector *connector)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
struct drm_display_mode *mode, *t;
|
|
|
|
/* The connector should have been removed from userspace long before
|
|
* it is finally destroyed.
|
|
*/
|
|
if (WARN_ON(connector->registered))
|
|
drm_connector_unregister(connector);
|
|
|
|
if (connector->tile_group) {
|
|
drm_mode_put_tile_group(dev, connector->tile_group);
|
|
connector->tile_group = NULL;
|
|
}
|
|
|
|
list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
|
|
drm_mode_remove(connector, mode);
|
|
|
|
list_for_each_entry_safe(mode, t, &connector->modes, head)
|
|
drm_mode_remove(connector, mode);
|
|
|
|
ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
|
|
connector->connector_type_id);
|
|
|
|
ida_remove(&dev->mode_config.connector_ida,
|
|
connector->connector_id);
|
|
|
|
kfree(connector->display_info.bus_formats);
|
|
drm_mode_object_unregister(dev, &connector->base);
|
|
kfree(connector->name);
|
|
connector->name = NULL;
|
|
list_del(&connector->head);
|
|
dev->mode_config.num_connector--;
|
|
|
|
WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
|
|
if (connector->state && connector->funcs->atomic_destroy_state)
|
|
connector->funcs->atomic_destroy_state(connector,
|
|
connector->state);
|
|
|
|
memset(connector, 0, sizeof(*connector));
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_cleanup);
|
|
|
|
/**
|
|
* drm_connector_register - register a connector
|
|
* @connector: the connector to register
|
|
*
|
|
* Register userspace interfaces for a connector
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_connector_register(struct drm_connector *connector)
|
|
{
|
|
int ret;
|
|
|
|
if (connector->registered)
|
|
return 0;
|
|
|
|
ret = drm_sysfs_connector_add(connector);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = drm_debugfs_connector_add(connector);
|
|
if (ret) {
|
|
goto err_sysfs;
|
|
}
|
|
|
|
if (connector->funcs->late_register) {
|
|
ret = connector->funcs->late_register(connector);
|
|
if (ret)
|
|
goto err_debugfs;
|
|
}
|
|
|
|
drm_mode_object_register(connector->dev, &connector->base);
|
|
|
|
connector->registered = true;
|
|
return 0;
|
|
|
|
err_debugfs:
|
|
drm_debugfs_connector_remove(connector);
|
|
err_sysfs:
|
|
drm_sysfs_connector_remove(connector);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_register);
|
|
|
|
/**
|
|
* drm_connector_unregister - unregister a connector
|
|
* @connector: the connector to unregister
|
|
*
|
|
* Unregister userspace interfaces for a connector
|
|
*/
|
|
void drm_connector_unregister(struct drm_connector *connector)
|
|
{
|
|
if (!connector->registered)
|
|
return;
|
|
|
|
if (connector->funcs->early_unregister)
|
|
connector->funcs->early_unregister(connector);
|
|
|
|
drm_sysfs_connector_remove(connector);
|
|
drm_debugfs_connector_remove(connector);
|
|
|
|
connector->registered = false;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_unregister);
|
|
|
|
static int drm_connector_register_all(struct drm_device *dev)
|
|
{
|
|
struct drm_connector *connector;
|
|
int ret;
|
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
|
|
drm_for_each_connector(connector, dev) {
|
|
ret = drm_connector_register(connector);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
|
|
return 0;
|
|
|
|
err:
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
drm_connector_unregister_all(dev);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_connector_unregister_all - unregister connector userspace interfaces
|
|
* @dev: drm device
|
|
*
|
|
* This functions unregisters all connectors from sysfs and other places so
|
|
* that userspace can no longer access them. Drivers should call this as the
|
|
* first step tearing down the device instace, or when the underlying
|
|
* physical device disappeared (e.g. USB unplug), right before calling
|
|
* drm_dev_unregister().
|
|
*/
|
|
void drm_connector_unregister_all(struct drm_device *dev)
|
|
{
|
|
struct drm_connector *connector;
|
|
|
|
/* FIXME: taking the mode config mutex ends up in a clash with sysfs */
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head)
|
|
drm_connector_unregister(connector);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_unregister_all);
|
|
|
|
static int drm_encoder_register_all(struct drm_device *dev)
|
|
{
|
|
struct drm_encoder *encoder;
|
|
int ret = 0;
|
|
|
|
drm_for_each_encoder(encoder, dev) {
|
|
if (encoder->funcs->late_register)
|
|
ret = encoder->funcs->late_register(encoder);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void drm_encoder_unregister_all(struct drm_device *dev)
|
|
{
|
|
struct drm_encoder *encoder;
|
|
|
|
drm_for_each_encoder(encoder, dev) {
|
|
if (encoder->funcs->early_unregister)
|
|
encoder->funcs->early_unregister(encoder);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* drm_encoder_init - Init a preallocated encoder
|
|
* @dev: drm device
|
|
* @encoder: the encoder to init
|
|
* @funcs: callbacks for this encoder
|
|
* @encoder_type: user visible type of the encoder
|
|
* @name: printf style format string for the encoder name, or NULL for default name
|
|
*
|
|
* Initialises a preallocated encoder. Encoder should be
|
|
* subclassed as part of driver encoder objects.
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_encoder_init(struct drm_device *dev,
|
|
struct drm_encoder *encoder,
|
|
const struct drm_encoder_funcs *funcs,
|
|
int encoder_type, const char *name, ...)
|
|
{
|
|
int ret;
|
|
|
|
drm_modeset_lock_all(dev);
|
|
|
|
ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
|
|
if (ret)
|
|
goto out_unlock;
|
|
|
|
encoder->dev = dev;
|
|
encoder->encoder_type = encoder_type;
|
|
encoder->funcs = funcs;
|
|
if (name) {
|
|
va_list ap;
|
|
|
|
va_start(ap, name);
|
|
encoder->name = kvasprintf(GFP_KERNEL, name, ap);
|
|
va_end(ap);
|
|
} else {
|
|
encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
|
|
drm_encoder_enum_list[encoder_type].name,
|
|
encoder->base.id);
|
|
}
|
|
if (!encoder->name) {
|
|
ret = -ENOMEM;
|
|
goto out_put;
|
|
}
|
|
|
|
list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
|
|
encoder->index = dev->mode_config.num_encoder++;
|
|
|
|
out_put:
|
|
if (ret)
|
|
drm_mode_object_unregister(dev, &encoder->base);
|
|
|
|
out_unlock:
|
|
drm_modeset_unlock_all(dev);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_encoder_init);
|
|
|
|
/**
|
|
* drm_encoder_cleanup - cleans up an initialised encoder
|
|
* @encoder: encoder to cleanup
|
|
*
|
|
* Cleans up the encoder but doesn't free the object.
|
|
*/
|
|
void drm_encoder_cleanup(struct drm_encoder *encoder)
|
|
{
|
|
struct drm_device *dev = encoder->dev;
|
|
|
|
/* Note that the encoder_list is considered to be static; should we
|
|
* remove the drm_encoder at runtime we would have to decrement all
|
|
* the indices on the drm_encoder after us in the encoder_list.
|
|
*/
|
|
|
|
drm_modeset_lock_all(dev);
|
|
drm_mode_object_unregister(dev, &encoder->base);
|
|
kfree(encoder->name);
|
|
list_del(&encoder->head);
|
|
dev->mode_config.num_encoder--;
|
|
drm_modeset_unlock_all(dev);
|
|
|
|
memset(encoder, 0, sizeof(*encoder));
|
|
}
|
|
EXPORT_SYMBOL(drm_encoder_cleanup);
|
|
|
|
static unsigned int drm_num_planes(struct drm_device *dev)
|
|
{
|
|
unsigned int num = 0;
|
|
struct drm_plane *tmp;
|
|
|
|
drm_for_each_plane(tmp, dev) {
|
|
num++;
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
/**
|
|
* drm_universal_plane_init - Initialize a new universal plane object
|
|
* @dev: DRM device
|
|
* @plane: plane object to init
|
|
* @possible_crtcs: bitmask of possible CRTCs
|
|
* @funcs: callbacks for the new plane
|
|
* @formats: array of supported formats (%DRM_FORMAT_*)
|
|
* @format_count: number of elements in @formats
|
|
* @type: type of plane (overlay, primary, cursor)
|
|
* @name: printf style format string for the plane name, or NULL for default name
|
|
*
|
|
* Initializes a plane object of type @type.
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
|
|
unsigned long possible_crtcs,
|
|
const struct drm_plane_funcs *funcs,
|
|
const uint32_t *formats, unsigned int format_count,
|
|
enum drm_plane_type type,
|
|
const char *name, ...)
|
|
{
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
int ret;
|
|
|
|
ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
|
|
if (ret)
|
|
return ret;
|
|
|
|
drm_modeset_lock_init(&plane->mutex);
|
|
|
|
plane->base.properties = &plane->properties;
|
|
plane->dev = dev;
|
|
plane->funcs = funcs;
|
|
plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
|
|
GFP_KERNEL);
|
|
if (!plane->format_types) {
|
|
DRM_DEBUG_KMS("out of memory when allocating plane\n");
|
|
drm_mode_object_unregister(dev, &plane->base);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (name) {
|
|
va_list ap;
|
|
|
|
va_start(ap, name);
|
|
plane->name = kvasprintf(GFP_KERNEL, name, ap);
|
|
va_end(ap);
|
|
} else {
|
|
plane->name = kasprintf(GFP_KERNEL, "plane-%d",
|
|
drm_num_planes(dev));
|
|
}
|
|
if (!plane->name) {
|
|
kfree(plane->format_types);
|
|
drm_mode_object_unregister(dev, &plane->base);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
|
|
plane->format_count = format_count;
|
|
plane->possible_crtcs = possible_crtcs;
|
|
plane->type = type;
|
|
|
|
list_add_tail(&plane->head, &config->plane_list);
|
|
plane->index = config->num_total_plane++;
|
|
if (plane->type == DRM_PLANE_TYPE_OVERLAY)
|
|
config->num_overlay_plane++;
|
|
|
|
drm_object_attach_property(&plane->base,
|
|
config->plane_type_property,
|
|
plane->type);
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
|
|
drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
|
|
drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
|
|
drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
|
|
drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
|
|
drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
|
|
drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
|
|
drm_object_attach_property(&plane->base, config->prop_src_x, 0);
|
|
drm_object_attach_property(&plane->base, config->prop_src_y, 0);
|
|
drm_object_attach_property(&plane->base, config->prop_src_w, 0);
|
|
drm_object_attach_property(&plane->base, config->prop_src_h, 0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_universal_plane_init);
|
|
|
|
static int drm_plane_register_all(struct drm_device *dev)
|
|
{
|
|
struct drm_plane *plane;
|
|
int ret = 0;
|
|
|
|
drm_for_each_plane(plane, dev) {
|
|
if (plane->funcs->late_register)
|
|
ret = plane->funcs->late_register(plane);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void drm_plane_unregister_all(struct drm_device *dev)
|
|
{
|
|
struct drm_plane *plane;
|
|
|
|
drm_for_each_plane(plane, dev) {
|
|
if (plane->funcs->early_unregister)
|
|
plane->funcs->early_unregister(plane);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* drm_plane_init - Initialize a legacy plane
|
|
* @dev: DRM device
|
|
* @plane: plane object to init
|
|
* @possible_crtcs: bitmask of possible CRTCs
|
|
* @funcs: callbacks for the new plane
|
|
* @formats: array of supported formats (%DRM_FORMAT_*)
|
|
* @format_count: number of elements in @formats
|
|
* @is_primary: plane type (primary vs overlay)
|
|
*
|
|
* Legacy API to initialize a DRM plane.
|
|
*
|
|
* New drivers should call drm_universal_plane_init() instead.
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
|
|
unsigned long possible_crtcs,
|
|
const struct drm_plane_funcs *funcs,
|
|
const uint32_t *formats, unsigned int format_count,
|
|
bool is_primary)
|
|
{
|
|
enum drm_plane_type type;
|
|
|
|
type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
|
|
return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
|
|
formats, format_count, type, NULL);
|
|
}
|
|
EXPORT_SYMBOL(drm_plane_init);
|
|
|
|
/**
|
|
* drm_plane_cleanup - Clean up the core plane usage
|
|
* @plane: plane to cleanup
|
|
*
|
|
* This function cleans up @plane and removes it from the DRM mode setting
|
|
* core. Note that the function does *not* free the plane structure itself,
|
|
* this is the responsibility of the caller.
|
|
*/
|
|
void drm_plane_cleanup(struct drm_plane *plane)
|
|
{
|
|
struct drm_device *dev = plane->dev;
|
|
|
|
drm_modeset_lock_all(dev);
|
|
kfree(plane->format_types);
|
|
drm_mode_object_unregister(dev, &plane->base);
|
|
|
|
BUG_ON(list_empty(&plane->head));
|
|
|
|
/* Note that the plane_list is considered to be static; should we
|
|
* remove the drm_plane at runtime we would have to decrement all
|
|
* the indices on the drm_plane after us in the plane_list.
|
|
*/
|
|
|
|
list_del(&plane->head);
|
|
dev->mode_config.num_total_plane--;
|
|
if (plane->type == DRM_PLANE_TYPE_OVERLAY)
|
|
dev->mode_config.num_overlay_plane--;
|
|
drm_modeset_unlock_all(dev);
|
|
|
|
WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
|
|
if (plane->state && plane->funcs->atomic_destroy_state)
|
|
plane->funcs->atomic_destroy_state(plane, plane->state);
|
|
|
|
kfree(plane->name);
|
|
|
|
memset(plane, 0, sizeof(*plane));
|
|
}
|
|
EXPORT_SYMBOL(drm_plane_cleanup);
|
|
|
|
/**
|
|
* drm_plane_from_index - find the registered plane at an index
|
|
* @dev: DRM device
|
|
* @idx: index of registered plane to find for
|
|
*
|
|
* Given a plane index, return the registered plane from DRM device's
|
|
* list of planes with matching index.
|
|
*/
|
|
struct drm_plane *
|
|
drm_plane_from_index(struct drm_device *dev, int idx)
|
|
{
|
|
struct drm_plane *plane;
|
|
|
|
drm_for_each_plane(plane, dev)
|
|
if (idx == plane->index)
|
|
return plane;
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(drm_plane_from_index);
|
|
|
|
/**
|
|
* drm_plane_force_disable - Forcibly disable a plane
|
|
* @plane: plane to disable
|
|
*
|
|
* Forces the plane to be disabled.
|
|
*
|
|
* Used when the plane's current framebuffer is destroyed,
|
|
* and when restoring fbdev mode.
|
|
*/
|
|
void drm_plane_force_disable(struct drm_plane *plane)
|
|
{
|
|
int ret;
|
|
|
|
if (!plane->fb)
|
|
return;
|
|
|
|
plane->old_fb = plane->fb;
|
|
ret = plane->funcs->disable_plane(plane);
|
|
if (ret) {
|
|
DRM_ERROR("failed to disable plane with busy fb\n");
|
|
plane->old_fb = NULL;
|
|
return;
|
|
}
|
|
/* disconnect the plane from the fb and crtc: */
|
|
drm_framebuffer_unreference(plane->old_fb);
|
|
plane->old_fb = NULL;
|
|
plane->fb = NULL;
|
|
plane->crtc = NULL;
|
|
}
|
|
EXPORT_SYMBOL(drm_plane_force_disable);
|
|
|
|
int drm_modeset_register_all(struct drm_device *dev)
|
|
{
|
|
int ret;
|
|
|
|
ret = drm_plane_register_all(dev);
|
|
if (ret)
|
|
goto err_plane;
|
|
|
|
ret = drm_crtc_register_all(dev);
|
|
if (ret)
|
|
goto err_crtc;
|
|
|
|
ret = drm_encoder_register_all(dev);
|
|
if (ret)
|
|
goto err_encoder;
|
|
|
|
ret = drm_connector_register_all(dev);
|
|
if (ret)
|
|
goto err_connector;
|
|
|
|
return 0;
|
|
|
|
err_connector:
|
|
drm_encoder_unregister_all(dev);
|
|
err_encoder:
|
|
drm_crtc_unregister_all(dev);
|
|
err_crtc:
|
|
drm_plane_unregister_all(dev);
|
|
err_plane:
|
|
return ret;
|
|
}
|
|
|
|
void drm_modeset_unregister_all(struct drm_device *dev)
|
|
{
|
|
drm_connector_unregister_all(dev);
|
|
drm_encoder_unregister_all(dev);
|
|
drm_crtc_unregister_all(dev);
|
|
drm_plane_unregister_all(dev);
|
|
}
|
|
|
|
static int drm_mode_create_standard_properties(struct drm_device *dev)
|
|
{
|
|
struct drm_property *prop;
|
|
|
|
/*
|
|
* Standard properties (apply to all connectors)
|
|
*/
|
|
prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
|
|
DRM_MODE_PROP_IMMUTABLE,
|
|
"EDID", 0);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.edid_property = prop;
|
|
|
|
prop = drm_property_create_enum(dev, 0,
|
|
"DPMS", drm_dpms_enum_list,
|
|
ARRAY_SIZE(drm_dpms_enum_list));
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.dpms_property = prop;
|
|
|
|
prop = drm_property_create(dev,
|
|
DRM_MODE_PROP_BLOB |
|
|
DRM_MODE_PROP_IMMUTABLE,
|
|
"PATH", 0);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.path_property = prop;
|
|
|
|
prop = drm_property_create(dev,
|
|
DRM_MODE_PROP_BLOB |
|
|
DRM_MODE_PROP_IMMUTABLE,
|
|
"TILE", 0);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.tile_property = prop;
|
|
|
|
prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
|
|
"type", drm_plane_type_enum_list,
|
|
ARRAY_SIZE(drm_plane_type_enum_list));
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.plane_type_property = prop;
|
|
|
|
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
|
|
"SRC_X", 0, UINT_MAX);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_src_x = prop;
|
|
|
|
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
|
|
"SRC_Y", 0, UINT_MAX);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_src_y = prop;
|
|
|
|
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
|
|
"SRC_W", 0, UINT_MAX);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_src_w = prop;
|
|
|
|
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
|
|
"SRC_H", 0, UINT_MAX);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_src_h = prop;
|
|
|
|
prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
|
|
"CRTC_X", INT_MIN, INT_MAX);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_crtc_x = prop;
|
|
|
|
prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
|
|
"CRTC_Y", INT_MIN, INT_MAX);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_crtc_y = prop;
|
|
|
|
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
|
|
"CRTC_W", 0, INT_MAX);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_crtc_w = prop;
|
|
|
|
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
|
|
"CRTC_H", 0, INT_MAX);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_crtc_h = prop;
|
|
|
|
prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
|
|
"FB_ID", DRM_MODE_OBJECT_FB);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_fb_id = prop;
|
|
|
|
prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
|
|
"CRTC_ID", DRM_MODE_OBJECT_CRTC);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_crtc_id = prop;
|
|
|
|
prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
|
|
"ACTIVE");
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_active = prop;
|
|
|
|
prop = drm_property_create(dev,
|
|
DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
|
|
"MODE_ID", 0);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.prop_mode_id = prop;
|
|
|
|
prop = drm_property_create(dev,
|
|
DRM_MODE_PROP_BLOB,
|
|
"DEGAMMA_LUT", 0);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.degamma_lut_property = prop;
|
|
|
|
prop = drm_property_create_range(dev,
|
|
DRM_MODE_PROP_IMMUTABLE,
|
|
"DEGAMMA_LUT_SIZE", 0, UINT_MAX);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.degamma_lut_size_property = prop;
|
|
|
|
prop = drm_property_create(dev,
|
|
DRM_MODE_PROP_BLOB,
|
|
"CTM", 0);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.ctm_property = prop;
|
|
|
|
prop = drm_property_create(dev,
|
|
DRM_MODE_PROP_BLOB,
|
|
"GAMMA_LUT", 0);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.gamma_lut_property = prop;
|
|
|
|
prop = drm_property_create_range(dev,
|
|
DRM_MODE_PROP_IMMUTABLE,
|
|
"GAMMA_LUT_SIZE", 0, UINT_MAX);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.gamma_lut_size_property = prop;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
|
|
* @dev: DRM device
|
|
*
|
|
* Called by a driver the first time a DVI-I connector is made.
|
|
*/
|
|
int drm_mode_create_dvi_i_properties(struct drm_device *dev)
|
|
{
|
|
struct drm_property *dvi_i_selector;
|
|
struct drm_property *dvi_i_subconnector;
|
|
|
|
if (dev->mode_config.dvi_i_select_subconnector_property)
|
|
return 0;
|
|
|
|
dvi_i_selector =
|
|
drm_property_create_enum(dev, 0,
|
|
"select subconnector",
|
|
drm_dvi_i_select_enum_list,
|
|
ARRAY_SIZE(drm_dvi_i_select_enum_list));
|
|
dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
|
|
|
|
dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
|
|
"subconnector",
|
|
drm_dvi_i_subconnector_enum_list,
|
|
ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
|
|
dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
|
|
|
|
/**
|
|
* drm_create_tv_properties - create TV specific connector properties
|
|
* @dev: DRM device
|
|
* @num_modes: number of different TV formats (modes) supported
|
|
* @modes: array of pointers to strings containing name of each format
|
|
*
|
|
* Called by a driver's TV initialization routine, this function creates
|
|
* the TV specific connector properties for a given device. Caller is
|
|
* responsible for allocating a list of format names and passing them to
|
|
* this routine.
|
|
*/
|
|
int drm_mode_create_tv_properties(struct drm_device *dev,
|
|
unsigned int num_modes,
|
|
const char * const modes[])
|
|
{
|
|
struct drm_property *tv_selector;
|
|
struct drm_property *tv_subconnector;
|
|
unsigned int i;
|
|
|
|
if (dev->mode_config.tv_select_subconnector_property)
|
|
return 0;
|
|
|
|
/*
|
|
* Basic connector properties
|
|
*/
|
|
tv_selector = drm_property_create_enum(dev, 0,
|
|
"select subconnector",
|
|
drm_tv_select_enum_list,
|
|
ARRAY_SIZE(drm_tv_select_enum_list));
|
|
if (!tv_selector)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_select_subconnector_property = tv_selector;
|
|
|
|
tv_subconnector =
|
|
drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
|
|
"subconnector",
|
|
drm_tv_subconnector_enum_list,
|
|
ARRAY_SIZE(drm_tv_subconnector_enum_list));
|
|
if (!tv_subconnector)
|
|
goto nomem;
|
|
dev->mode_config.tv_subconnector_property = tv_subconnector;
|
|
|
|
/*
|
|
* Other, TV specific properties: margins & TV modes.
|
|
*/
|
|
dev->mode_config.tv_left_margin_property =
|
|
drm_property_create_range(dev, 0, "left margin", 0, 100);
|
|
if (!dev->mode_config.tv_left_margin_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_right_margin_property =
|
|
drm_property_create_range(dev, 0, "right margin", 0, 100);
|
|
if (!dev->mode_config.tv_right_margin_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_top_margin_property =
|
|
drm_property_create_range(dev, 0, "top margin", 0, 100);
|
|
if (!dev->mode_config.tv_top_margin_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_bottom_margin_property =
|
|
drm_property_create_range(dev, 0, "bottom margin", 0, 100);
|
|
if (!dev->mode_config.tv_bottom_margin_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_mode_property =
|
|
drm_property_create(dev, DRM_MODE_PROP_ENUM,
|
|
"mode", num_modes);
|
|
if (!dev->mode_config.tv_mode_property)
|
|
goto nomem;
|
|
|
|
for (i = 0; i < num_modes; i++)
|
|
drm_property_add_enum(dev->mode_config.tv_mode_property, i,
|
|
i, modes[i]);
|
|
|
|
dev->mode_config.tv_brightness_property =
|
|
drm_property_create_range(dev, 0, "brightness", 0, 100);
|
|
if (!dev->mode_config.tv_brightness_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_contrast_property =
|
|
drm_property_create_range(dev, 0, "contrast", 0, 100);
|
|
if (!dev->mode_config.tv_contrast_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_flicker_reduction_property =
|
|
drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
|
|
if (!dev->mode_config.tv_flicker_reduction_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_overscan_property =
|
|
drm_property_create_range(dev, 0, "overscan", 0, 100);
|
|
if (!dev->mode_config.tv_overscan_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_saturation_property =
|
|
drm_property_create_range(dev, 0, "saturation", 0, 100);
|
|
if (!dev->mode_config.tv_saturation_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_hue_property =
|
|
drm_property_create_range(dev, 0, "hue", 0, 100);
|
|
if (!dev->mode_config.tv_hue_property)
|
|
goto nomem;
|
|
|
|
return 0;
|
|
nomem:
|
|
return -ENOMEM;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_tv_properties);
|
|
|
|
/**
|
|
* drm_mode_create_scaling_mode_property - create scaling mode property
|
|
* @dev: DRM device
|
|
*
|
|
* Called by a driver the first time it's needed, must be attached to desired
|
|
* connectors.
|
|
*/
|
|
int drm_mode_create_scaling_mode_property(struct drm_device *dev)
|
|
{
|
|
struct drm_property *scaling_mode;
|
|
|
|
if (dev->mode_config.scaling_mode_property)
|
|
return 0;
|
|
|
|
scaling_mode =
|
|
drm_property_create_enum(dev, 0, "scaling mode",
|
|
drm_scaling_mode_enum_list,
|
|
ARRAY_SIZE(drm_scaling_mode_enum_list));
|
|
|
|
dev->mode_config.scaling_mode_property = scaling_mode;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
|
|
|
|
/**
|
|
* drm_mode_create_aspect_ratio_property - create aspect ratio property
|
|
* @dev: DRM device
|
|
*
|
|
* Called by a driver the first time it's needed, must be attached to desired
|
|
* connectors.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
|
|
{
|
|
if (dev->mode_config.aspect_ratio_property)
|
|
return 0;
|
|
|
|
dev->mode_config.aspect_ratio_property =
|
|
drm_property_create_enum(dev, 0, "aspect ratio",
|
|
drm_aspect_ratio_enum_list,
|
|
ARRAY_SIZE(drm_aspect_ratio_enum_list));
|
|
|
|
if (dev->mode_config.aspect_ratio_property == NULL)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
|
|
|
|
/**
|
|
* drm_mode_create_dirty_property - create dirty property
|
|
* @dev: DRM device
|
|
*
|
|
* Called by a driver the first time it's needed, must be attached to desired
|
|
* connectors.
|
|
*/
|
|
int drm_mode_create_dirty_info_property(struct drm_device *dev)
|
|
{
|
|
struct drm_property *dirty_info;
|
|
|
|
if (dev->mode_config.dirty_info_property)
|
|
return 0;
|
|
|
|
dirty_info =
|
|
drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
|
|
"dirty",
|
|
drm_dirty_info_enum_list,
|
|
ARRAY_SIZE(drm_dirty_info_enum_list));
|
|
dev->mode_config.dirty_info_property = dirty_info;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
|
|
|
|
/**
|
|
* drm_mode_create_suggested_offset_properties - create suggests offset properties
|
|
* @dev: DRM device
|
|
*
|
|
* Create the the suggested x/y offset property for connectors.
|
|
*/
|
|
int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
|
|
{
|
|
if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
|
|
return 0;
|
|
|
|
dev->mode_config.suggested_x_property =
|
|
drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
|
|
|
|
dev->mode_config.suggested_y_property =
|
|
drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
|
|
|
|
if (dev->mode_config.suggested_x_property == NULL ||
|
|
dev->mode_config.suggested_y_property == NULL)
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
|
|
|
|
/**
|
|
* drm_mode_getresources - get graphics configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Construct a set of configuration description structures and return
|
|
* them to the user, including CRTC, connector and framebuffer configuration.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_getresources(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_card_res *card_res = data;
|
|
struct list_head *lh;
|
|
struct drm_framebuffer *fb;
|
|
struct drm_connector *connector;
|
|
struct drm_crtc *crtc;
|
|
struct drm_encoder *encoder;
|
|
int ret = 0;
|
|
int connector_count = 0;
|
|
int crtc_count = 0;
|
|
int fb_count = 0;
|
|
int encoder_count = 0;
|
|
int copied = 0;
|
|
uint32_t __user *fb_id;
|
|
uint32_t __user *crtc_id;
|
|
uint32_t __user *connector_id;
|
|
uint32_t __user *encoder_id;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
|
|
mutex_lock(&file_priv->fbs_lock);
|
|
/*
|
|
* For the non-control nodes we need to limit the list of resources
|
|
* by IDs in the group list for this node
|
|
*/
|
|
list_for_each(lh, &file_priv->fbs)
|
|
fb_count++;
|
|
|
|
/* handle this in 4 parts */
|
|
/* FBs */
|
|
if (card_res->count_fbs >= fb_count) {
|
|
copied = 0;
|
|
fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
|
|
list_for_each_entry(fb, &file_priv->fbs, filp_head) {
|
|
if (put_user(fb->base.id, fb_id + copied)) {
|
|
mutex_unlock(&file_priv->fbs_lock);
|
|
return -EFAULT;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
card_res->count_fbs = fb_count;
|
|
mutex_unlock(&file_priv->fbs_lock);
|
|
|
|
/* mode_config.mutex protects the connector list against e.g. DP MST
|
|
* connector hot-adding. CRTC/Plane lists are invariant. */
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
drm_for_each_crtc(crtc, dev)
|
|
crtc_count++;
|
|
|
|
drm_for_each_connector(connector, dev)
|
|
connector_count++;
|
|
|
|
drm_for_each_encoder(encoder, dev)
|
|
encoder_count++;
|
|
|
|
card_res->max_height = dev->mode_config.max_height;
|
|
card_res->min_height = dev->mode_config.min_height;
|
|
card_res->max_width = dev->mode_config.max_width;
|
|
card_res->min_width = dev->mode_config.min_width;
|
|
|
|
/* CRTCs */
|
|
if (card_res->count_crtcs >= crtc_count) {
|
|
copied = 0;
|
|
crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
|
|
drm_for_each_crtc(crtc, dev) {
|
|
if (put_user(crtc->base.id, crtc_id + copied)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
card_res->count_crtcs = crtc_count;
|
|
|
|
/* Encoders */
|
|
if (card_res->count_encoders >= encoder_count) {
|
|
copied = 0;
|
|
encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
|
|
drm_for_each_encoder(encoder, dev) {
|
|
if (put_user(encoder->base.id, encoder_id +
|
|
copied)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
card_res->count_encoders = encoder_count;
|
|
|
|
/* Connectors */
|
|
if (card_res->count_connectors >= connector_count) {
|
|
copied = 0;
|
|
connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
|
|
drm_for_each_connector(connector, dev) {
|
|
if (put_user(connector->base.id,
|
|
connector_id + copied)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
card_res->count_connectors = connector_count;
|
|
|
|
out:
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_getcrtc - get CRTC configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Construct a CRTC configuration structure to return to the user.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_getcrtc(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_crtc *crtc_resp = data;
|
|
struct drm_crtc *crtc;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
|
|
if (!crtc)
|
|
return -ENOENT;
|
|
|
|
drm_modeset_lock_crtc(crtc, crtc->primary);
|
|
crtc_resp->gamma_size = crtc->gamma_size;
|
|
if (crtc->primary->fb)
|
|
crtc_resp->fb_id = crtc->primary->fb->base.id;
|
|
else
|
|
crtc_resp->fb_id = 0;
|
|
|
|
if (crtc->state) {
|
|
crtc_resp->x = crtc->primary->state->src_x >> 16;
|
|
crtc_resp->y = crtc->primary->state->src_y >> 16;
|
|
if (crtc->state->enable) {
|
|
drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
|
|
crtc_resp->mode_valid = 1;
|
|
|
|
} else {
|
|
crtc_resp->mode_valid = 0;
|
|
}
|
|
} else {
|
|
crtc_resp->x = crtc->x;
|
|
crtc_resp->y = crtc->y;
|
|
if (crtc->enabled) {
|
|
drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
|
|
crtc_resp->mode_valid = 1;
|
|
|
|
} else {
|
|
crtc_resp->mode_valid = 0;
|
|
}
|
|
}
|
|
drm_modeset_unlock_crtc(crtc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
|
|
const struct drm_file *file_priv)
|
|
{
|
|
/*
|
|
* If user-space hasn't configured the driver to expose the stereo 3D
|
|
* modes, don't expose them.
|
|
*/
|
|
if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
|
|
{
|
|
/* For atomic drivers only state objects are synchronously updated and
|
|
* protected by modeset locks, so check those first. */
|
|
if (connector->state)
|
|
return connector->state->best_encoder;
|
|
return connector->encoder;
|
|
}
|
|
|
|
/* helper for getconnector and getproperties ioctls */
|
|
static int get_properties(struct drm_mode_object *obj, bool atomic,
|
|
uint32_t __user *prop_ptr, uint64_t __user *prop_values,
|
|
uint32_t *arg_count_props)
|
|
{
|
|
int props_count;
|
|
int i, ret, copied;
|
|
|
|
props_count = obj->properties->count;
|
|
if (!atomic)
|
|
props_count -= obj->properties->atomic_count;
|
|
|
|
if ((*arg_count_props >= props_count) && props_count) {
|
|
for (i = 0, copied = 0; copied < props_count; i++) {
|
|
struct drm_property *prop = obj->properties->properties[i];
|
|
uint64_t val;
|
|
|
|
if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
|
|
continue;
|
|
|
|
ret = drm_object_property_get_value(obj, prop, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (put_user(prop->base.id, prop_ptr + copied))
|
|
return -EFAULT;
|
|
|
|
if (put_user(val, prop_values + copied))
|
|
return -EFAULT;
|
|
|
|
copied++;
|
|
}
|
|
}
|
|
*arg_count_props = props_count;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_getconnector - get connector configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Construct a connector configuration structure to return to the user.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_getconnector(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_get_connector *out_resp = data;
|
|
struct drm_connector *connector;
|
|
struct drm_encoder *encoder;
|
|
struct drm_display_mode *mode;
|
|
int mode_count = 0;
|
|
int encoders_count = 0;
|
|
int ret = 0;
|
|
int copied = 0;
|
|
int i;
|
|
struct drm_mode_modeinfo u_mode;
|
|
struct drm_mode_modeinfo __user *mode_ptr;
|
|
uint32_t __user *encoder_ptr;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
|
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
|
|
connector = drm_connector_lookup(dev, out_resp->connector_id);
|
|
if (!connector) {
|
|
ret = -ENOENT;
|
|
goto out_unlock;
|
|
}
|
|
|
|
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
|
|
if (connector->encoder_ids[i] != 0)
|
|
encoders_count++;
|
|
|
|
if (out_resp->count_modes == 0) {
|
|
connector->funcs->fill_modes(connector,
|
|
dev->mode_config.max_width,
|
|
dev->mode_config.max_height);
|
|
}
|
|
|
|
/* delayed so we get modes regardless of pre-fill_modes state */
|
|
list_for_each_entry(mode, &connector->modes, head)
|
|
if (drm_mode_expose_to_userspace(mode, file_priv))
|
|
mode_count++;
|
|
|
|
out_resp->connector_id = connector->base.id;
|
|
out_resp->connector_type = connector->connector_type;
|
|
out_resp->connector_type_id = connector->connector_type_id;
|
|
out_resp->mm_width = connector->display_info.width_mm;
|
|
out_resp->mm_height = connector->display_info.height_mm;
|
|
out_resp->subpixel = connector->display_info.subpixel_order;
|
|
out_resp->connection = connector->status;
|
|
|
|
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
|
|
encoder = drm_connector_get_encoder(connector);
|
|
if (encoder)
|
|
out_resp->encoder_id = encoder->base.id;
|
|
else
|
|
out_resp->encoder_id = 0;
|
|
|
|
/*
|
|
* This ioctl is called twice, once to determine how much space is
|
|
* needed, and the 2nd time to fill it.
|
|
*/
|
|
if ((out_resp->count_modes >= mode_count) && mode_count) {
|
|
copied = 0;
|
|
mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
|
|
list_for_each_entry(mode, &connector->modes, head) {
|
|
if (!drm_mode_expose_to_userspace(mode, file_priv))
|
|
continue;
|
|
|
|
drm_mode_convert_to_umode(&u_mode, mode);
|
|
if (copy_to_user(mode_ptr + copied,
|
|
&u_mode, sizeof(u_mode))) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
out_resp->count_modes = mode_count;
|
|
|
|
ret = get_properties(&connector->base, file_priv->atomic,
|
|
(uint32_t __user *)(unsigned long)(out_resp->props_ptr),
|
|
(uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
|
|
&out_resp->count_props);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
|
|
copied = 0;
|
|
encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
|
|
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
|
|
if (connector->encoder_ids[i] != 0) {
|
|
if (put_user(connector->encoder_ids[i],
|
|
encoder_ptr + copied)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
}
|
|
out_resp->count_encoders = encoders_count;
|
|
|
|
out:
|
|
drm_modeset_unlock(&dev->mode_config.connection_mutex);
|
|
|
|
drm_connector_unreference(connector);
|
|
out_unlock:
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
|
|
{
|
|
struct drm_connector *connector;
|
|
struct drm_device *dev = encoder->dev;
|
|
bool uses_atomic = false;
|
|
|
|
/* For atomic drivers only state objects are synchronously updated and
|
|
* protected by modeset locks, so check those first. */
|
|
drm_for_each_connector(connector, dev) {
|
|
if (!connector->state)
|
|
continue;
|
|
|
|
uses_atomic = true;
|
|
|
|
if (connector->state->best_encoder != encoder)
|
|
continue;
|
|
|
|
return connector->state->crtc;
|
|
}
|
|
|
|
/* Don't return stale data (e.g. pending async disable). */
|
|
if (uses_atomic)
|
|
return NULL;
|
|
|
|
return encoder->crtc;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_getencoder - get encoder configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Construct a encoder configuration structure to return to the user.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_getencoder(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_get_encoder *enc_resp = data;
|
|
struct drm_encoder *encoder;
|
|
struct drm_crtc *crtc;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
encoder = drm_encoder_find(dev, enc_resp->encoder_id);
|
|
if (!encoder)
|
|
return -ENOENT;
|
|
|
|
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
|
|
crtc = drm_encoder_get_crtc(encoder);
|
|
if (crtc)
|
|
enc_resp->crtc_id = crtc->base.id;
|
|
else
|
|
enc_resp->crtc_id = 0;
|
|
drm_modeset_unlock(&dev->mode_config.connection_mutex);
|
|
|
|
enc_resp->encoder_type = encoder->encoder_type;
|
|
enc_resp->encoder_id = encoder->base.id;
|
|
enc_resp->possible_crtcs = encoder->possible_crtcs;
|
|
enc_resp->possible_clones = encoder->possible_clones;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_getplane_res - enumerate all plane resources
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* Construct a list of plane ids to return to the user.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_getplane_res(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_get_plane_res *plane_resp = data;
|
|
struct drm_mode_config *config;
|
|
struct drm_plane *plane;
|
|
uint32_t __user *plane_ptr;
|
|
int copied = 0;
|
|
unsigned num_planes;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
config = &dev->mode_config;
|
|
|
|
if (file_priv->universal_planes)
|
|
num_planes = config->num_total_plane;
|
|
else
|
|
num_planes = config->num_overlay_plane;
|
|
|
|
/*
|
|
* This ioctl is called twice, once to determine how much space is
|
|
* needed, and the 2nd time to fill it.
|
|
*/
|
|
if (num_planes &&
|
|
(plane_resp->count_planes >= num_planes)) {
|
|
plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
|
|
|
|
/* Plane lists are invariant, no locking needed. */
|
|
drm_for_each_plane(plane, dev) {
|
|
/*
|
|
* Unless userspace set the 'universal planes'
|
|
* capability bit, only advertise overlays.
|
|
*/
|
|
if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
|
|
!file_priv->universal_planes)
|
|
continue;
|
|
|
|
if (put_user(plane->base.id, plane_ptr + copied))
|
|
return -EFAULT;
|
|
copied++;
|
|
}
|
|
}
|
|
plane_resp->count_planes = num_planes;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_getplane - get plane configuration
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* Construct a plane configuration structure to return to the user.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_getplane(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_get_plane *plane_resp = data;
|
|
struct drm_plane *plane;
|
|
uint32_t __user *format_ptr;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
plane = drm_plane_find(dev, plane_resp->plane_id);
|
|
if (!plane)
|
|
return -ENOENT;
|
|
|
|
drm_modeset_lock(&plane->mutex, NULL);
|
|
if (plane->crtc)
|
|
plane_resp->crtc_id = plane->crtc->base.id;
|
|
else
|
|
plane_resp->crtc_id = 0;
|
|
|
|
if (plane->fb)
|
|
plane_resp->fb_id = plane->fb->base.id;
|
|
else
|
|
plane_resp->fb_id = 0;
|
|
drm_modeset_unlock(&plane->mutex);
|
|
|
|
plane_resp->plane_id = plane->base.id;
|
|
plane_resp->possible_crtcs = plane->possible_crtcs;
|
|
plane_resp->gamma_size = 0;
|
|
|
|
/*
|
|
* This ioctl is called twice, once to determine how much space is
|
|
* needed, and the 2nd time to fill it.
|
|
*/
|
|
if (plane->format_count &&
|
|
(plane_resp->count_format_types >= plane->format_count)) {
|
|
format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
|
|
if (copy_to_user(format_ptr,
|
|
plane->format_types,
|
|
sizeof(uint32_t) * plane->format_count)) {
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
plane_resp->count_format_types = plane->format_count;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_plane_check_pixel_format - Check if the plane supports the pixel format
|
|
* @plane: plane to check for format support
|
|
* @format: the pixel format
|
|
*
|
|
* Returns:
|
|
* Zero of @plane has @format in its list of supported pixel formats, -EINVAL
|
|
* otherwise.
|
|
*/
|
|
int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < plane->format_count; i++) {
|
|
if (format == plane->format_types[i])
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int check_src_coords(uint32_t src_x, uint32_t src_y,
|
|
uint32_t src_w, uint32_t src_h,
|
|
const struct drm_framebuffer *fb)
|
|
{
|
|
unsigned int fb_width, fb_height;
|
|
|
|
fb_width = fb->width << 16;
|
|
fb_height = fb->height << 16;
|
|
|
|
/* Make sure source coordinates are inside the fb. */
|
|
if (src_w > fb_width ||
|
|
src_x > fb_width - src_w ||
|
|
src_h > fb_height ||
|
|
src_y > fb_height - src_h) {
|
|
DRM_DEBUG_KMS("Invalid source coordinates "
|
|
"%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
|
|
src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
|
|
src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
|
|
src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
|
|
src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* setplane_internal - setplane handler for internal callers
|
|
*
|
|
* Note that we assume an extra reference has already been taken on fb. If the
|
|
* update fails, this reference will be dropped before return; if it succeeds,
|
|
* the previous framebuffer (if any) will be unreferenced instead.
|
|
*
|
|
* src_{x,y,w,h} are provided in 16.16 fixed point format
|
|
*/
|
|
static int __setplane_internal(struct drm_plane *plane,
|
|
struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
int32_t crtc_x, int32_t crtc_y,
|
|
uint32_t crtc_w, uint32_t crtc_h,
|
|
/* src_{x,y,w,h} values are 16.16 fixed point */
|
|
uint32_t src_x, uint32_t src_y,
|
|
uint32_t src_w, uint32_t src_h)
|
|
{
|
|
int ret = 0;
|
|
|
|
/* No fb means shut it down */
|
|
if (!fb) {
|
|
plane->old_fb = plane->fb;
|
|
ret = plane->funcs->disable_plane(plane);
|
|
if (!ret) {
|
|
plane->crtc = NULL;
|
|
plane->fb = NULL;
|
|
} else {
|
|
plane->old_fb = NULL;
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
/* Check whether this plane is usable on this CRTC */
|
|
if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
|
|
DRM_DEBUG_KMS("Invalid crtc for plane\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/* Check whether this plane supports the fb pixel format. */
|
|
ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
|
|
if (ret) {
|
|
DRM_DEBUG_KMS("Invalid pixel format %s\n",
|
|
drm_get_format_name(fb->pixel_format));
|
|
goto out;
|
|
}
|
|
|
|
/* Give drivers some help against integer overflows */
|
|
if (crtc_w > INT_MAX ||
|
|
crtc_x > INT_MAX - (int32_t) crtc_w ||
|
|
crtc_h > INT_MAX ||
|
|
crtc_y > INT_MAX - (int32_t) crtc_h) {
|
|
DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
|
|
crtc_w, crtc_h, crtc_x, crtc_y);
|
|
ret = -ERANGE;
|
|
goto out;
|
|
}
|
|
|
|
ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
|
|
if (ret)
|
|
goto out;
|
|
|
|
plane->old_fb = plane->fb;
|
|
ret = plane->funcs->update_plane(plane, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
src_x, src_y, src_w, src_h);
|
|
if (!ret) {
|
|
plane->crtc = crtc;
|
|
plane->fb = fb;
|
|
fb = NULL;
|
|
} else {
|
|
plane->old_fb = NULL;
|
|
}
|
|
|
|
out:
|
|
if (fb)
|
|
drm_framebuffer_unreference(fb);
|
|
if (plane->old_fb)
|
|
drm_framebuffer_unreference(plane->old_fb);
|
|
plane->old_fb = NULL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int setplane_internal(struct drm_plane *plane,
|
|
struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
int32_t crtc_x, int32_t crtc_y,
|
|
uint32_t crtc_w, uint32_t crtc_h,
|
|
/* src_{x,y,w,h} values are 16.16 fixed point */
|
|
uint32_t src_x, uint32_t src_y,
|
|
uint32_t src_w, uint32_t src_h)
|
|
{
|
|
int ret;
|
|
|
|
drm_modeset_lock_all(plane->dev);
|
|
ret = __setplane_internal(plane, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
src_x, src_y, src_w, src_h);
|
|
drm_modeset_unlock_all(plane->dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_setplane - configure a plane's configuration
|
|
* @dev: DRM device
|
|
* @data: ioctl data*
|
|
* @file_priv: DRM file info
|
|
*
|
|
* Set plane configuration, including placement, fb, scaling, and other factors.
|
|
* Or pass a NULL fb to disable (planes may be disabled without providing a
|
|
* valid crtc).
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_setplane(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_set_plane *plane_req = data;
|
|
struct drm_plane *plane;
|
|
struct drm_crtc *crtc = NULL;
|
|
struct drm_framebuffer *fb = NULL;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* First, find the plane, crtc, and fb objects. If not available,
|
|
* we don't bother to call the driver.
|
|
*/
|
|
plane = drm_plane_find(dev, plane_req->plane_id);
|
|
if (!plane) {
|
|
DRM_DEBUG_KMS("Unknown plane ID %d\n",
|
|
plane_req->plane_id);
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (plane_req->fb_id) {
|
|
fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
|
|
if (!fb) {
|
|
DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
|
|
plane_req->fb_id);
|
|
return -ENOENT;
|
|
}
|
|
|
|
crtc = drm_crtc_find(dev, plane_req->crtc_id);
|
|
if (!crtc) {
|
|
DRM_DEBUG_KMS("Unknown crtc ID %d\n",
|
|
plane_req->crtc_id);
|
|
return -ENOENT;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* setplane_internal will take care of deref'ing either the old or new
|
|
* framebuffer depending on success.
|
|
*/
|
|
return setplane_internal(plane, crtc, fb,
|
|
plane_req->crtc_x, plane_req->crtc_y,
|
|
plane_req->crtc_w, plane_req->crtc_h,
|
|
plane_req->src_x, plane_req->src_y,
|
|
plane_req->src_w, plane_req->src_h);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_set_config_internal - helper to call ->set_config
|
|
* @set: modeset config to set
|
|
*
|
|
* This is a little helper to wrap internal calls to the ->set_config driver
|
|
* interface. The only thing it adds is correct refcounting dance.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_set_config_internal(struct drm_mode_set *set)
|
|
{
|
|
struct drm_crtc *crtc = set->crtc;
|
|
struct drm_framebuffer *fb;
|
|
struct drm_crtc *tmp;
|
|
int ret;
|
|
|
|
/*
|
|
* NOTE: ->set_config can also disable other crtcs (if we steal all
|
|
* connectors from it), hence we need to refcount the fbs across all
|
|
* crtcs. Atomic modeset will have saner semantics ...
|
|
*/
|
|
drm_for_each_crtc(tmp, crtc->dev)
|
|
tmp->primary->old_fb = tmp->primary->fb;
|
|
|
|
fb = set->fb;
|
|
|
|
ret = crtc->funcs->set_config(set);
|
|
if (ret == 0) {
|
|
crtc->primary->crtc = crtc;
|
|
crtc->primary->fb = fb;
|
|
}
|
|
|
|
drm_for_each_crtc(tmp, crtc->dev) {
|
|
if (tmp->primary->fb)
|
|
drm_framebuffer_reference(tmp->primary->fb);
|
|
if (tmp->primary->old_fb)
|
|
drm_framebuffer_unreference(tmp->primary->old_fb);
|
|
tmp->primary->old_fb = NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_set_config_internal);
|
|
|
|
/**
|
|
* drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
|
|
* @mode: mode to query
|
|
* @hdisplay: hdisplay value to fill in
|
|
* @vdisplay: vdisplay value to fill in
|
|
*
|
|
* The vdisplay value will be doubled if the specified mode is a stereo mode of
|
|
* the appropriate layout.
|
|
*/
|
|
void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
|
|
int *hdisplay, int *vdisplay)
|
|
{
|
|
struct drm_display_mode adjusted;
|
|
|
|
drm_mode_copy(&adjusted, mode);
|
|
drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
|
|
*hdisplay = adjusted.crtc_hdisplay;
|
|
*vdisplay = adjusted.crtc_vdisplay;
|
|
}
|
|
EXPORT_SYMBOL(drm_crtc_get_hv_timing);
|
|
|
|
/**
|
|
* drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
|
|
* CRTC viewport
|
|
* @crtc: CRTC that framebuffer will be displayed on
|
|
* @x: x panning
|
|
* @y: y panning
|
|
* @mode: mode that framebuffer will be displayed under
|
|
* @fb: framebuffer to check size of
|
|
*/
|
|
int drm_crtc_check_viewport(const struct drm_crtc *crtc,
|
|
int x, int y,
|
|
const struct drm_display_mode *mode,
|
|
const struct drm_framebuffer *fb)
|
|
|
|
{
|
|
int hdisplay, vdisplay;
|
|
|
|
drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
|
|
|
|
if (crtc->state &&
|
|
crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
|
|
BIT(DRM_ROTATE_270)))
|
|
swap(hdisplay, vdisplay);
|
|
|
|
return check_src_coords(x << 16, y << 16,
|
|
hdisplay << 16, vdisplay << 16, fb);
|
|
}
|
|
EXPORT_SYMBOL(drm_crtc_check_viewport);
|
|
|
|
/**
|
|
* drm_mode_setcrtc - set CRTC configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Build a new CRTC configuration based on user request.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_setcrtc(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
struct drm_mode_crtc *crtc_req = data;
|
|
struct drm_crtc *crtc;
|
|
struct drm_connector **connector_set = NULL, *connector;
|
|
struct drm_framebuffer *fb = NULL;
|
|
struct drm_display_mode *mode = NULL;
|
|
struct drm_mode_set set;
|
|
uint32_t __user *set_connectors_ptr;
|
|
int ret;
|
|
int i;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Universal plane src offsets are only 16.16, prevent havoc for
|
|
* drivers using universal plane code internally.
|
|
*/
|
|
if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
|
|
return -ERANGE;
|
|
|
|
drm_modeset_lock_all(dev);
|
|
crtc = drm_crtc_find(dev, crtc_req->crtc_id);
|
|
if (!crtc) {
|
|
DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
|
|
|
|
if (crtc_req->mode_valid) {
|
|
/* If we have a mode we need a framebuffer. */
|
|
/* If we pass -1, set the mode with the currently bound fb */
|
|
if (crtc_req->fb_id == -1) {
|
|
if (!crtc->primary->fb) {
|
|
DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
fb = crtc->primary->fb;
|
|
/* Make refcounting symmetric with the lookup path. */
|
|
drm_framebuffer_reference(fb);
|
|
} else {
|
|
fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
|
|
if (!fb) {
|
|
DRM_DEBUG_KMS("Unknown FB ID%d\n",
|
|
crtc_req->fb_id);
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
mode = drm_mode_create(dev);
|
|
if (!mode) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
ret = drm_mode_convert_umode(mode, &crtc_req->mode);
|
|
if (ret) {
|
|
DRM_DEBUG_KMS("Invalid mode\n");
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Check whether the primary plane supports the fb pixel format.
|
|
* Drivers not implementing the universal planes API use a
|
|
* default formats list provided by the DRM core which doesn't
|
|
* match real hardware capabilities. Skip the check in that
|
|
* case.
|
|
*/
|
|
if (!crtc->primary->format_default) {
|
|
ret = drm_plane_check_pixel_format(crtc->primary,
|
|
fb->pixel_format);
|
|
if (ret) {
|
|
DRM_DEBUG_KMS("Invalid pixel format %s\n",
|
|
drm_get_format_name(fb->pixel_format));
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
|
|
mode, fb);
|
|
if (ret)
|
|
goto out;
|
|
|
|
}
|
|
|
|
if (crtc_req->count_connectors == 0 && mode) {
|
|
DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
|
|
DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
|
|
crtc_req->count_connectors);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (crtc_req->count_connectors > 0) {
|
|
u32 out_id;
|
|
|
|
/* Avoid unbounded kernel memory allocation */
|
|
if (crtc_req->count_connectors > config->num_connector) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
connector_set = kmalloc_array(crtc_req->count_connectors,
|
|
sizeof(struct drm_connector *),
|
|
GFP_KERNEL);
|
|
if (!connector_set) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < crtc_req->count_connectors; i++) {
|
|
connector_set[i] = NULL;
|
|
set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
|
|
if (get_user(out_id, &set_connectors_ptr[i])) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
connector = drm_connector_lookup(dev, out_id);
|
|
if (!connector) {
|
|
DRM_DEBUG_KMS("Connector id %d unknown\n",
|
|
out_id);
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
|
|
connector->base.id,
|
|
connector->name);
|
|
|
|
connector_set[i] = connector;
|
|
}
|
|
}
|
|
|
|
set.crtc = crtc;
|
|
set.x = crtc_req->x;
|
|
set.y = crtc_req->y;
|
|
set.mode = mode;
|
|
set.connectors = connector_set;
|
|
set.num_connectors = crtc_req->count_connectors;
|
|
set.fb = fb;
|
|
ret = drm_mode_set_config_internal(&set);
|
|
|
|
out:
|
|
if (fb)
|
|
drm_framebuffer_unreference(fb);
|
|
|
|
if (connector_set) {
|
|
for (i = 0; i < crtc_req->count_connectors; i++) {
|
|
if (connector_set[i])
|
|
drm_connector_unreference(connector_set[i]);
|
|
}
|
|
}
|
|
kfree(connector_set);
|
|
drm_mode_destroy(dev, mode);
|
|
drm_modeset_unlock_all(dev);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_cursor_universal - translate legacy cursor ioctl call into a
|
|
* universal plane handler call
|
|
* @crtc: crtc to update cursor for
|
|
* @req: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Legacy cursor ioctl's work directly with driver buffer handles. To
|
|
* translate legacy ioctl calls into universal plane handler calls, we need to
|
|
* wrap the native buffer handle in a drm_framebuffer.
|
|
*
|
|
* Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB
|
|
* buffer with a pitch of 4*width; the universal plane interface should be used
|
|
* directly in cases where the hardware can support other buffer settings and
|
|
* userspace wants to make use of these capabilities.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
static int drm_mode_cursor_universal(struct drm_crtc *crtc,
|
|
struct drm_mode_cursor2 *req,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_framebuffer *fb = NULL;
|
|
struct drm_mode_fb_cmd2 fbreq = {
|
|
.width = req->width,
|
|
.height = req->height,
|
|
.pixel_format = DRM_FORMAT_ARGB8888,
|
|
.pitches = { req->width * 4 },
|
|
.handles = { req->handle },
|
|
};
|
|
int32_t crtc_x, crtc_y;
|
|
uint32_t crtc_w = 0, crtc_h = 0;
|
|
uint32_t src_w = 0, src_h = 0;
|
|
int ret = 0;
|
|
|
|
BUG_ON(!crtc->cursor);
|
|
WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
|
|
|
|
/*
|
|
* Obtain fb we'll be using (either new or existing) and take an extra
|
|
* reference to it if fb != null. setplane will take care of dropping
|
|
* the reference if the plane update fails.
|
|
*/
|
|
if (req->flags & DRM_MODE_CURSOR_BO) {
|
|
if (req->handle) {
|
|
fb = internal_framebuffer_create(dev, &fbreq, file_priv);
|
|
if (IS_ERR(fb)) {
|
|
DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
|
|
return PTR_ERR(fb);
|
|
}
|
|
fb->hot_x = req->hot_x;
|
|
fb->hot_y = req->hot_y;
|
|
} else {
|
|
fb = NULL;
|
|
}
|
|
} else {
|
|
fb = crtc->cursor->fb;
|
|
if (fb)
|
|
drm_framebuffer_reference(fb);
|
|
}
|
|
|
|
if (req->flags & DRM_MODE_CURSOR_MOVE) {
|
|
crtc_x = req->x;
|
|
crtc_y = req->y;
|
|
} else {
|
|
crtc_x = crtc->cursor_x;
|
|
crtc_y = crtc->cursor_y;
|
|
}
|
|
|
|
if (fb) {
|
|
crtc_w = fb->width;
|
|
crtc_h = fb->height;
|
|
src_w = fb->width << 16;
|
|
src_h = fb->height << 16;
|
|
}
|
|
|
|
/*
|
|
* setplane_internal will take care of deref'ing either the old or new
|
|
* framebuffer depending on success.
|
|
*/
|
|
ret = __setplane_internal(crtc->cursor, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
0, 0, src_w, src_h);
|
|
|
|
/* Update successful; save new cursor position, if necessary */
|
|
if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
|
|
crtc->cursor_x = req->x;
|
|
crtc->cursor_y = req->y;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int drm_mode_cursor_common(struct drm_device *dev,
|
|
struct drm_mode_cursor2 *req,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
int ret = 0;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
|
|
return -EINVAL;
|
|
|
|
crtc = drm_crtc_find(dev, req->crtc_id);
|
|
if (!crtc) {
|
|
DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
|
|
return -ENOENT;
|
|
}
|
|
|
|
/*
|
|
* If this crtc has a universal cursor plane, call that plane's update
|
|
* handler rather than using legacy cursor handlers.
|
|
*/
|
|
drm_modeset_lock_crtc(crtc, crtc->cursor);
|
|
if (crtc->cursor) {
|
|
ret = drm_mode_cursor_universal(crtc, req, file_priv);
|
|
goto out;
|
|
}
|
|
|
|
if (req->flags & DRM_MODE_CURSOR_BO) {
|
|
if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
|
|
ret = -ENXIO;
|
|
goto out;
|
|
}
|
|
/* Turns off the cursor if handle is 0 */
|
|
if (crtc->funcs->cursor_set2)
|
|
ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
|
|
req->width, req->height, req->hot_x, req->hot_y);
|
|
else
|
|
ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
|
|
req->width, req->height);
|
|
}
|
|
|
|
if (req->flags & DRM_MODE_CURSOR_MOVE) {
|
|
if (crtc->funcs->cursor_move) {
|
|
ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
|
|
} else {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
}
|
|
out:
|
|
drm_modeset_unlock_crtc(crtc);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* drm_mode_cursor_ioctl - set CRTC's cursor configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Set the cursor configuration based on user request.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_cursor_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_cursor *req = data;
|
|
struct drm_mode_cursor2 new_req;
|
|
|
|
memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
|
|
new_req.hot_x = new_req.hot_y = 0;
|
|
|
|
return drm_mode_cursor_common(dev, &new_req, file_priv);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_cursor2_ioctl - set CRTC's cursor configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Set the cursor configuration based on user request. This implements the 2nd
|
|
* version of the cursor ioctl, which allows userspace to additionally specify
|
|
* the hotspot of the pointer.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_cursor2_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_cursor2 *req = data;
|
|
|
|
return drm_mode_cursor_common(dev, req, file_priv);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
|
|
* @bpp: bits per pixels
|
|
* @depth: bit depth per pixel
|
|
*
|
|
* Computes a drm fourcc pixel format code for the given @bpp/@depth values.
|
|
* Useful in fbdev emulation code, since that deals in those values.
|
|
*/
|
|
uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
|
|
{
|
|
uint32_t fmt;
|
|
|
|
switch (bpp) {
|
|
case 8:
|
|
fmt = DRM_FORMAT_C8;
|
|
break;
|
|
case 16:
|
|
if (depth == 15)
|
|
fmt = DRM_FORMAT_XRGB1555;
|
|
else
|
|
fmt = DRM_FORMAT_RGB565;
|
|
break;
|
|
case 24:
|
|
fmt = DRM_FORMAT_RGB888;
|
|
break;
|
|
case 32:
|
|
if (depth == 24)
|
|
fmt = DRM_FORMAT_XRGB8888;
|
|
else if (depth == 30)
|
|
fmt = DRM_FORMAT_XRGB2101010;
|
|
else
|
|
fmt = DRM_FORMAT_ARGB8888;
|
|
break;
|
|
default:
|
|
DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
|
|
fmt = DRM_FORMAT_XRGB8888;
|
|
break;
|
|
}
|
|
|
|
return fmt;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_legacy_fb_format);
|
|
|
|
/**
|
|
* drm_mode_addfb - add an FB to the graphics configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Add a new FB to the specified CRTC, given a user request. This is the
|
|
* original addfb ioctl which only supported RGB formats.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_addfb(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_fb_cmd *or = data;
|
|
struct drm_mode_fb_cmd2 r = {};
|
|
int ret;
|
|
|
|
/* convert to new format and call new ioctl */
|
|
r.fb_id = or->fb_id;
|
|
r.width = or->width;
|
|
r.height = or->height;
|
|
r.pitches[0] = or->pitch;
|
|
r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
|
|
r.handles[0] = or->handle;
|
|
|
|
ret = drm_mode_addfb2(dev, &r, file_priv);
|
|
if (ret)
|
|
return ret;
|
|
|
|
or->fb_id = r.fb_id;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int format_check(const struct drm_mode_fb_cmd2 *r)
|
|
{
|
|
uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
|
|
|
|
switch (format) {
|
|
case DRM_FORMAT_C8:
|
|
case DRM_FORMAT_RGB332:
|
|
case DRM_FORMAT_BGR233:
|
|
case DRM_FORMAT_XRGB4444:
|
|
case DRM_FORMAT_XBGR4444:
|
|
case DRM_FORMAT_RGBX4444:
|
|
case DRM_FORMAT_BGRX4444:
|
|
case DRM_FORMAT_ARGB4444:
|
|
case DRM_FORMAT_ABGR4444:
|
|
case DRM_FORMAT_RGBA4444:
|
|
case DRM_FORMAT_BGRA4444:
|
|
case DRM_FORMAT_XRGB1555:
|
|
case DRM_FORMAT_XBGR1555:
|
|
case DRM_FORMAT_RGBX5551:
|
|
case DRM_FORMAT_BGRX5551:
|
|
case DRM_FORMAT_ARGB1555:
|
|
case DRM_FORMAT_ABGR1555:
|
|
case DRM_FORMAT_RGBA5551:
|
|
case DRM_FORMAT_BGRA5551:
|
|
case DRM_FORMAT_RGB565:
|
|
case DRM_FORMAT_BGR565:
|
|
case DRM_FORMAT_RGB888:
|
|
case DRM_FORMAT_BGR888:
|
|
case DRM_FORMAT_XRGB8888:
|
|
case DRM_FORMAT_XBGR8888:
|
|
case DRM_FORMAT_RGBX8888:
|
|
case DRM_FORMAT_BGRX8888:
|
|
case DRM_FORMAT_ARGB8888:
|
|
case DRM_FORMAT_ABGR8888:
|
|
case DRM_FORMAT_RGBA8888:
|
|
case DRM_FORMAT_BGRA8888:
|
|
case DRM_FORMAT_XRGB2101010:
|
|
case DRM_FORMAT_XBGR2101010:
|
|
case DRM_FORMAT_RGBX1010102:
|
|
case DRM_FORMAT_BGRX1010102:
|
|
case DRM_FORMAT_ARGB2101010:
|
|
case DRM_FORMAT_ABGR2101010:
|
|
case DRM_FORMAT_RGBA1010102:
|
|
case DRM_FORMAT_BGRA1010102:
|
|
case DRM_FORMAT_YUYV:
|
|
case DRM_FORMAT_YVYU:
|
|
case DRM_FORMAT_UYVY:
|
|
case DRM_FORMAT_VYUY:
|
|
case DRM_FORMAT_AYUV:
|
|
case DRM_FORMAT_NV12:
|
|
case DRM_FORMAT_NV21:
|
|
case DRM_FORMAT_NV16:
|
|
case DRM_FORMAT_NV61:
|
|
case DRM_FORMAT_NV24:
|
|
case DRM_FORMAT_NV42:
|
|
case DRM_FORMAT_YUV410:
|
|
case DRM_FORMAT_YVU410:
|
|
case DRM_FORMAT_YUV411:
|
|
case DRM_FORMAT_YVU411:
|
|
case DRM_FORMAT_YUV420:
|
|
case DRM_FORMAT_YVU420:
|
|
case DRM_FORMAT_YUV422:
|
|
case DRM_FORMAT_YVU422:
|
|
case DRM_FORMAT_YUV444:
|
|
case DRM_FORMAT_YVU444:
|
|
return 0;
|
|
default:
|
|
DRM_DEBUG_KMS("invalid pixel format %s\n",
|
|
drm_get_format_name(r->pixel_format));
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
|
|
{
|
|
int ret, hsub, vsub, num_planes, i;
|
|
|
|
ret = format_check(r);
|
|
if (ret) {
|
|
DRM_DEBUG_KMS("bad framebuffer format %s\n",
|
|
drm_get_format_name(r->pixel_format));
|
|
return ret;
|
|
}
|
|
|
|
hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
|
|
vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
|
|
num_planes = drm_format_num_planes(r->pixel_format);
|
|
|
|
if (r->width == 0 || r->width % hsub) {
|
|
DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (r->height == 0 || r->height % vsub) {
|
|
DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < num_planes; i++) {
|
|
unsigned int width = r->width / (i != 0 ? hsub : 1);
|
|
unsigned int height = r->height / (i != 0 ? vsub : 1);
|
|
unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
|
|
|
|
if (!r->handles[i]) {
|
|
DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((uint64_t) width * cpp > UINT_MAX)
|
|
return -ERANGE;
|
|
|
|
if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
|
|
return -ERANGE;
|
|
|
|
if (r->pitches[i] < width * cpp) {
|
|
DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
|
|
DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
|
|
r->modifier[i], i);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* modifier specific checks: */
|
|
switch (r->modifier[i]) {
|
|
case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
|
|
/* NOTE: the pitch restriction may be lifted later if it turns
|
|
* out that no hw has this restriction:
|
|
*/
|
|
if (r->pixel_format != DRM_FORMAT_NV12 ||
|
|
width % 128 || height % 32 ||
|
|
r->pitches[i] % 128) {
|
|
DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (i = num_planes; i < 4; i++) {
|
|
if (r->modifier[i]) {
|
|
DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */
|
|
if (!(r->flags & DRM_MODE_FB_MODIFIERS))
|
|
continue;
|
|
|
|
if (r->handles[i]) {
|
|
DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (r->pitches[i]) {
|
|
DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (r->offsets[i]) {
|
|
DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct drm_framebuffer *
|
|
internal_framebuffer_create(struct drm_device *dev,
|
|
const struct drm_mode_fb_cmd2 *r,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
struct drm_framebuffer *fb;
|
|
int ret;
|
|
|
|
if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
|
|
DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
if ((config->min_width > r->width) || (r->width > config->max_width)) {
|
|
DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
|
|
r->width, config->min_width, config->max_width);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
if ((config->min_height > r->height) || (r->height > config->max_height)) {
|
|
DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
|
|
r->height, config->min_height, config->max_height);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
if (r->flags & DRM_MODE_FB_MODIFIERS &&
|
|
!dev->mode_config.allow_fb_modifiers) {
|
|
DRM_DEBUG_KMS("driver does not support fb modifiers\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
ret = framebuffer_check(r);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
|
|
if (IS_ERR(fb)) {
|
|
DRM_DEBUG_KMS("could not create framebuffer\n");
|
|
return fb;
|
|
}
|
|
|
|
return fb;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_addfb2 - add an FB to the graphics configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Add a new FB to the specified CRTC, given a user request with format. This is
|
|
* the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
|
|
* and uses fourcc codes as pixel format specifiers.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_addfb2(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_fb_cmd2 *r = data;
|
|
struct drm_framebuffer *fb;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
fb = internal_framebuffer_create(dev, r, file_priv);
|
|
if (IS_ERR(fb))
|
|
return PTR_ERR(fb);
|
|
|
|
DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
|
|
r->fb_id = fb->base.id;
|
|
|
|
/* Transfer ownership to the filp for reaping on close */
|
|
mutex_lock(&file_priv->fbs_lock);
|
|
list_add(&fb->filp_head, &file_priv->fbs);
|
|
mutex_unlock(&file_priv->fbs_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct drm_mode_rmfb_work {
|
|
struct work_struct work;
|
|
struct list_head fbs;
|
|
};
|
|
|
|
static void drm_mode_rmfb_work_fn(struct work_struct *w)
|
|
{
|
|
struct drm_mode_rmfb_work *arg = container_of(w, typeof(*arg), work);
|
|
|
|
while (!list_empty(&arg->fbs)) {
|
|
struct drm_framebuffer *fb =
|
|
list_first_entry(&arg->fbs, typeof(*fb), filp_head);
|
|
|
|
list_del_init(&fb->filp_head);
|
|
drm_framebuffer_remove(fb);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* drm_mode_rmfb - remove an FB from the configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Remove the FB specified by the user.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_rmfb(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_framebuffer *fb = NULL;
|
|
struct drm_framebuffer *fbl = NULL;
|
|
uint32_t *id = data;
|
|
int found = 0;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
fb = drm_framebuffer_lookup(dev, *id);
|
|
if (!fb)
|
|
return -ENOENT;
|
|
|
|
mutex_lock(&file_priv->fbs_lock);
|
|
list_for_each_entry(fbl, &file_priv->fbs, filp_head)
|
|
if (fb == fbl)
|
|
found = 1;
|
|
if (!found) {
|
|
mutex_unlock(&file_priv->fbs_lock);
|
|
goto fail_unref;
|
|
}
|
|
|
|
list_del_init(&fb->filp_head);
|
|
mutex_unlock(&file_priv->fbs_lock);
|
|
|
|
/* drop the reference we picked up in framebuffer lookup */
|
|
drm_framebuffer_unreference(fb);
|
|
|
|
/*
|
|
* we now own the reference that was stored in the fbs list
|
|
*
|
|
* drm_framebuffer_remove may fail with -EINTR on pending signals,
|
|
* so run this in a separate stack as there's no way to correctly
|
|
* handle this after the fb is already removed from the lookup table.
|
|
*/
|
|
if (drm_framebuffer_read_refcount(fb) > 1) {
|
|
struct drm_mode_rmfb_work arg;
|
|
|
|
INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
|
|
INIT_LIST_HEAD(&arg.fbs);
|
|
list_add_tail(&fb->filp_head, &arg.fbs);
|
|
|
|
schedule_work(&arg.work);
|
|
flush_work(&arg.work);
|
|
destroy_work_on_stack(&arg.work);
|
|
} else
|
|
drm_framebuffer_unreference(fb);
|
|
|
|
return 0;
|
|
|
|
fail_unref:
|
|
drm_framebuffer_unreference(fb);
|
|
return -ENOENT;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_getfb - get FB info
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Lookup the FB given its ID and return info about it.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_getfb(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_fb_cmd *r = data;
|
|
struct drm_framebuffer *fb;
|
|
int ret;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
fb = drm_framebuffer_lookup(dev, r->fb_id);
|
|
if (!fb)
|
|
return -ENOENT;
|
|
|
|
r->height = fb->height;
|
|
r->width = fb->width;
|
|
r->depth = fb->depth;
|
|
r->bpp = fb->bits_per_pixel;
|
|
r->pitch = fb->pitches[0];
|
|
if (fb->funcs->create_handle) {
|
|
if (drm_is_current_master(file_priv) || capable(CAP_SYS_ADMIN) ||
|
|
drm_is_control_client(file_priv)) {
|
|
ret = fb->funcs->create_handle(fb, file_priv,
|
|
&r->handle);
|
|
} else {
|
|
/* GET_FB() is an unprivileged ioctl so we must not
|
|
* return a buffer-handle to non-master processes! For
|
|
* backwards-compatibility reasons, we cannot make
|
|
* GET_FB() privileged, so just return an invalid handle
|
|
* for non-masters. */
|
|
r->handle = 0;
|
|
ret = 0;
|
|
}
|
|
} else {
|
|
ret = -ENODEV;
|
|
}
|
|
|
|
drm_framebuffer_unreference(fb);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Lookup the FB and flush out the damaged area supplied by userspace as a clip
|
|
* rectangle list. Generic userspace which does frontbuffer rendering must call
|
|
* this ioctl to flush out the changes on manual-update display outputs, e.g.
|
|
* usb display-link, mipi manual update panels or edp panel self refresh modes.
|
|
*
|
|
* Modesetting drivers which always update the frontbuffer do not need to
|
|
* implement the corresponding ->dirty framebuffer callback.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_clip_rect __user *clips_ptr;
|
|
struct drm_clip_rect *clips = NULL;
|
|
struct drm_mode_fb_dirty_cmd *r = data;
|
|
struct drm_framebuffer *fb;
|
|
unsigned flags;
|
|
int num_clips;
|
|
int ret;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
fb = drm_framebuffer_lookup(dev, r->fb_id);
|
|
if (!fb)
|
|
return -ENOENT;
|
|
|
|
num_clips = r->num_clips;
|
|
clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
|
|
|
|
if (!num_clips != !clips_ptr) {
|
|
ret = -EINVAL;
|
|
goto out_err1;
|
|
}
|
|
|
|
flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
|
|
|
|
/* If userspace annotates copy, clips must come in pairs */
|
|
if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
|
|
ret = -EINVAL;
|
|
goto out_err1;
|
|
}
|
|
|
|
if (num_clips && clips_ptr) {
|
|
if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
|
|
ret = -EINVAL;
|
|
goto out_err1;
|
|
}
|
|
clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
|
|
if (!clips) {
|
|
ret = -ENOMEM;
|
|
goto out_err1;
|
|
}
|
|
|
|
ret = copy_from_user(clips, clips_ptr,
|
|
num_clips * sizeof(*clips));
|
|
if (ret) {
|
|
ret = -EFAULT;
|
|
goto out_err2;
|
|
}
|
|
}
|
|
|
|
if (fb->funcs->dirty) {
|
|
ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
|
|
clips, num_clips);
|
|
} else {
|
|
ret = -ENOSYS;
|
|
}
|
|
|
|
out_err2:
|
|
kfree(clips);
|
|
out_err1:
|
|
drm_framebuffer_unreference(fb);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_fb_release - remove and free the FBs on this file
|
|
* @priv: drm file for the ioctl
|
|
*
|
|
* Destroy all the FBs associated with @filp.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
void drm_fb_release(struct drm_file *priv)
|
|
{
|
|
struct drm_framebuffer *fb, *tfb;
|
|
struct drm_mode_rmfb_work arg;
|
|
|
|
INIT_LIST_HEAD(&arg.fbs);
|
|
|
|
/*
|
|
* When the file gets released that means no one else can access the fb
|
|
* list any more, so no need to grab fpriv->fbs_lock. And we need to
|
|
* avoid upsetting lockdep since the universal cursor code adds a
|
|
* framebuffer while holding mutex locks.
|
|
*
|
|
* Note that a real deadlock between fpriv->fbs_lock and the modeset
|
|
* locks is impossible here since no one else but this function can get
|
|
* at it any more.
|
|
*/
|
|
list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
|
|
if (drm_framebuffer_read_refcount(fb) > 1) {
|
|
list_move_tail(&fb->filp_head, &arg.fbs);
|
|
} else {
|
|
list_del_init(&fb->filp_head);
|
|
|
|
/* This drops the fpriv->fbs reference. */
|
|
drm_framebuffer_unreference(fb);
|
|
}
|
|
}
|
|
|
|
if (!list_empty(&arg.fbs)) {
|
|
INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
|
|
|
|
schedule_work(&arg.work);
|
|
flush_work(&arg.work);
|
|
destroy_work_on_stack(&arg.work);
|
|
}
|
|
}
|
|
|
|
static bool drm_property_type_valid(struct drm_property *property)
|
|
{
|
|
if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
|
|
return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
|
|
return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
|
|
}
|
|
|
|
/**
|
|
* drm_property_create - create a new property type
|
|
* @dev: drm device
|
|
* @flags: flags specifying the property type
|
|
* @name: name of the property
|
|
* @num_values: number of pre-defined values
|
|
*
|
|
* This creates a new generic drm property which can then be attached to a drm
|
|
* object with drm_object_attach_property. The returned property object must be
|
|
* freed with drm_property_destroy.
|
|
*
|
|
* Note that the DRM core keeps a per-device list of properties and that, if
|
|
* drm_mode_config_cleanup() is called, it will destroy all properties created
|
|
* by the driver.
|
|
*
|
|
* Returns:
|
|
* A pointer to the newly created property on success, NULL on failure.
|
|
*/
|
|
struct drm_property *drm_property_create(struct drm_device *dev, int flags,
|
|
const char *name, int num_values)
|
|
{
|
|
struct drm_property *property = NULL;
|
|
int ret;
|
|
|
|
property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
|
|
if (!property)
|
|
return NULL;
|
|
|
|
property->dev = dev;
|
|
|
|
if (num_values) {
|
|
property->values = kcalloc(num_values, sizeof(uint64_t),
|
|
GFP_KERNEL);
|
|
if (!property->values)
|
|
goto fail;
|
|
}
|
|
|
|
ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
|
|
if (ret)
|
|
goto fail;
|
|
|
|
property->flags = flags;
|
|
property->num_values = num_values;
|
|
INIT_LIST_HEAD(&property->enum_list);
|
|
|
|
if (name) {
|
|
strncpy(property->name, name, DRM_PROP_NAME_LEN);
|
|
property->name[DRM_PROP_NAME_LEN-1] = '\0';
|
|
}
|
|
|
|
list_add_tail(&property->head, &dev->mode_config.property_list);
|
|
|
|
WARN_ON(!drm_property_type_valid(property));
|
|
|
|
return property;
|
|
fail:
|
|
kfree(property->values);
|
|
kfree(property);
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(drm_property_create);
|
|
|
|
/**
|
|
* drm_property_create_enum - create a new enumeration property type
|
|
* @dev: drm device
|
|
* @flags: flags specifying the property type
|
|
* @name: name of the property
|
|
* @props: enumeration lists with property values
|
|
* @num_values: number of pre-defined values
|
|
*
|
|
* This creates a new generic drm property which can then be attached to a drm
|
|
* object with drm_object_attach_property. The returned property object must be
|
|
* freed with drm_property_destroy.
|
|
*
|
|
* Userspace is only allowed to set one of the predefined values for enumeration
|
|
* properties.
|
|
*
|
|
* Returns:
|
|
* A pointer to the newly created property on success, NULL on failure.
|
|
*/
|
|
struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
|
|
const char *name,
|
|
const struct drm_prop_enum_list *props,
|
|
int num_values)
|
|
{
|
|
struct drm_property *property;
|
|
int i, ret;
|
|
|
|
flags |= DRM_MODE_PROP_ENUM;
|
|
|
|
property = drm_property_create(dev, flags, name, num_values);
|
|
if (!property)
|
|
return NULL;
|
|
|
|
for (i = 0; i < num_values; i++) {
|
|
ret = drm_property_add_enum(property, i,
|
|
props[i].type,
|
|
props[i].name);
|
|
if (ret) {
|
|
drm_property_destroy(dev, property);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return property;
|
|
}
|
|
EXPORT_SYMBOL(drm_property_create_enum);
|
|
|
|
/**
|
|
* drm_property_create_bitmask - create a new bitmask property type
|
|
* @dev: drm device
|
|
* @flags: flags specifying the property type
|
|
* @name: name of the property
|
|
* @props: enumeration lists with property bitflags
|
|
* @num_props: size of the @props array
|
|
* @supported_bits: bitmask of all supported enumeration values
|
|
*
|
|
* This creates a new bitmask drm property which can then be attached to a drm
|
|
* object with drm_object_attach_property. The returned property object must be
|
|
* freed with drm_property_destroy.
|
|
*
|
|
* Compared to plain enumeration properties userspace is allowed to set any
|
|
* or'ed together combination of the predefined property bitflag values
|
|
*
|
|
* Returns:
|
|
* A pointer to the newly created property on success, NULL on failure.
|
|
*/
|
|
struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
|
|
int flags, const char *name,
|
|
const struct drm_prop_enum_list *props,
|
|
int num_props,
|
|
uint64_t supported_bits)
|
|
{
|
|
struct drm_property *property;
|
|
int i, ret, index = 0;
|
|
int num_values = hweight64(supported_bits);
|
|
|
|
flags |= DRM_MODE_PROP_BITMASK;
|
|
|
|
property = drm_property_create(dev, flags, name, num_values);
|
|
if (!property)
|
|
return NULL;
|
|
for (i = 0; i < num_props; i++) {
|
|
if (!(supported_bits & (1ULL << props[i].type)))
|
|
continue;
|
|
|
|
if (WARN_ON(index >= num_values)) {
|
|
drm_property_destroy(dev, property);
|
|
return NULL;
|
|
}
|
|
|
|
ret = drm_property_add_enum(property, index++,
|
|
props[i].type,
|
|
props[i].name);
|
|
if (ret) {
|
|
drm_property_destroy(dev, property);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return property;
|
|
}
|
|
EXPORT_SYMBOL(drm_property_create_bitmask);
|
|
|
|
static struct drm_property *property_create_range(struct drm_device *dev,
|
|
int flags, const char *name,
|
|
uint64_t min, uint64_t max)
|
|
{
|
|
struct drm_property *property;
|
|
|
|
property = drm_property_create(dev, flags, name, 2);
|
|
if (!property)
|
|
return NULL;
|
|
|
|
property->values[0] = min;
|
|
property->values[1] = max;
|
|
|
|
return property;
|
|
}
|
|
|
|
/**
|
|
* drm_property_create_range - create a new unsigned ranged property type
|
|
* @dev: drm device
|
|
* @flags: flags specifying the property type
|
|
* @name: name of the property
|
|
* @min: minimum value of the property
|
|
* @max: maximum value of the property
|
|
*
|
|
* This creates a new generic drm property which can then be attached to a drm
|
|
* object with drm_object_attach_property. The returned property object must be
|
|
* freed with drm_property_destroy.
|
|
*
|
|
* Userspace is allowed to set any unsigned integer value in the (min, max)
|
|
* range inclusive.
|
|
*
|
|
* Returns:
|
|
* A pointer to the newly created property on success, NULL on failure.
|
|
*/
|
|
struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
|
|
const char *name,
|
|
uint64_t min, uint64_t max)
|
|
{
|
|
return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
|
|
name, min, max);
|
|
}
|
|
EXPORT_SYMBOL(drm_property_create_range);
|
|
|
|
/**
|
|
* drm_property_create_signed_range - create a new signed ranged property type
|
|
* @dev: drm device
|
|
* @flags: flags specifying the property type
|
|
* @name: name of the property
|
|
* @min: minimum value of the property
|
|
* @max: maximum value of the property
|
|
*
|
|
* This creates a new generic drm property which can then be attached to a drm
|
|
* object with drm_object_attach_property. The returned property object must be
|
|
* freed with drm_property_destroy.
|
|
*
|
|
* Userspace is allowed to set any signed integer value in the (min, max)
|
|
* range inclusive.
|
|
*
|
|
* Returns:
|
|
* A pointer to the newly created property on success, NULL on failure.
|
|
*/
|
|
struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
|
|
int flags, const char *name,
|
|
int64_t min, int64_t max)
|
|
{
|
|
return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
|
|
name, I642U64(min), I642U64(max));
|
|
}
|
|
EXPORT_SYMBOL(drm_property_create_signed_range);
|
|
|
|
/**
|
|
* drm_property_create_object - create a new object property type
|
|
* @dev: drm device
|
|
* @flags: flags specifying the property type
|
|
* @name: name of the property
|
|
* @type: object type from DRM_MODE_OBJECT_* defines
|
|
*
|
|
* This creates a new generic drm property which can then be attached to a drm
|
|
* object with drm_object_attach_property. The returned property object must be
|
|
* freed with drm_property_destroy.
|
|
*
|
|
* Userspace is only allowed to set this to any property value of the given
|
|
* @type. Only useful for atomic properties, which is enforced.
|
|
*
|
|
* Returns:
|
|
* A pointer to the newly created property on success, NULL on failure.
|
|
*/
|
|
struct drm_property *drm_property_create_object(struct drm_device *dev,
|
|
int flags, const char *name, uint32_t type)
|
|
{
|
|
struct drm_property *property;
|
|
|
|
flags |= DRM_MODE_PROP_OBJECT;
|
|
|
|
if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
|
|
return NULL;
|
|
|
|
property = drm_property_create(dev, flags, name, 1);
|
|
if (!property)
|
|
return NULL;
|
|
|
|
property->values[0] = type;
|
|
|
|
return property;
|
|
}
|
|
EXPORT_SYMBOL(drm_property_create_object);
|
|
|
|
/**
|
|
* drm_property_create_bool - create a new boolean property type
|
|
* @dev: drm device
|
|
* @flags: flags specifying the property type
|
|
* @name: name of the property
|
|
*
|
|
* This creates a new generic drm property which can then be attached to a drm
|
|
* object with drm_object_attach_property. The returned property object must be
|
|
* freed with drm_property_destroy.
|
|
*
|
|
* This is implemented as a ranged property with only {0, 1} as valid values.
|
|
*
|
|
* Returns:
|
|
* A pointer to the newly created property on success, NULL on failure.
|
|
*/
|
|
struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
|
|
const char *name)
|
|
{
|
|
return drm_property_create_range(dev, flags, name, 0, 1);
|
|
}
|
|
EXPORT_SYMBOL(drm_property_create_bool);
|
|
|
|
/**
|
|
* drm_property_add_enum - add a possible value to an enumeration property
|
|
* @property: enumeration property to change
|
|
* @index: index of the new enumeration
|
|
* @value: value of the new enumeration
|
|
* @name: symbolic name of the new enumeration
|
|
*
|
|
* This functions adds enumerations to a property.
|
|
*
|
|
* It's use is deprecated, drivers should use one of the more specific helpers
|
|
* to directly create the property with all enumerations already attached.
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_property_add_enum(struct drm_property *property, int index,
|
|
uint64_t value, const char *name)
|
|
{
|
|
struct drm_property_enum *prop_enum;
|
|
|
|
if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
|
|
drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Bitmask enum properties have the additional constraint of values
|
|
* from 0 to 63
|
|
*/
|
|
if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
|
|
(value > 63))
|
|
return -EINVAL;
|
|
|
|
if (!list_empty(&property->enum_list)) {
|
|
list_for_each_entry(prop_enum, &property->enum_list, head) {
|
|
if (prop_enum->value == value) {
|
|
strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
|
|
prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
|
|
if (!prop_enum)
|
|
return -ENOMEM;
|
|
|
|
strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
|
|
prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
|
|
prop_enum->value = value;
|
|
|
|
property->values[index] = value;
|
|
list_add_tail(&prop_enum->head, &property->enum_list);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_property_add_enum);
|
|
|
|
/**
|
|
* drm_property_destroy - destroy a drm property
|
|
* @dev: drm device
|
|
* @property: property to destry
|
|
*
|
|
* This function frees a property including any attached resources like
|
|
* enumeration values.
|
|
*/
|
|
void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
|
|
{
|
|
struct drm_property_enum *prop_enum, *pt;
|
|
|
|
list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
|
|
list_del(&prop_enum->head);
|
|
kfree(prop_enum);
|
|
}
|
|
|
|
if (property->num_values)
|
|
kfree(property->values);
|
|
drm_mode_object_unregister(dev, &property->base);
|
|
list_del(&property->head);
|
|
kfree(property);
|
|
}
|
|
EXPORT_SYMBOL(drm_property_destroy);
|
|
|
|
/**
|
|
* drm_object_attach_property - attach a property to a modeset object
|
|
* @obj: drm modeset object
|
|
* @property: property to attach
|
|
* @init_val: initial value of the property
|
|
*
|
|
* This attaches the given property to the modeset object with the given initial
|
|
* value. Currently this function cannot fail since the properties are stored in
|
|
* a statically sized array.
|
|
*/
|
|
void drm_object_attach_property(struct drm_mode_object *obj,
|
|
struct drm_property *property,
|
|
uint64_t init_val)
|
|
{
|
|
int count = obj->properties->count;
|
|
|
|
if (count == DRM_OBJECT_MAX_PROPERTY) {
|
|
WARN(1, "Failed to attach object property (type: 0x%x). Please "
|
|
"increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
|
|
"you see this message on the same object type.\n",
|
|
obj->type);
|
|
return;
|
|
}
|
|
|
|
obj->properties->properties[count] = property;
|
|
obj->properties->values[count] = init_val;
|
|
obj->properties->count++;
|
|
if (property->flags & DRM_MODE_PROP_ATOMIC)
|
|
obj->properties->atomic_count++;
|
|
}
|
|
EXPORT_SYMBOL(drm_object_attach_property);
|
|
|
|
/**
|
|
* drm_object_property_set_value - set the value of a property
|
|
* @obj: drm mode object to set property value for
|
|
* @property: property to set
|
|
* @val: value the property should be set to
|
|
*
|
|
* This functions sets a given property on a given object. This function only
|
|
* changes the software state of the property, it does not call into the
|
|
* driver's ->set_property callback.
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_object_property_set_value(struct drm_mode_object *obj,
|
|
struct drm_property *property, uint64_t val)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < obj->properties->count; i++) {
|
|
if (obj->properties->properties[i] == property) {
|
|
obj->properties->values[i] = val;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL(drm_object_property_set_value);
|
|
|
|
/**
|
|
* drm_object_property_get_value - retrieve the value of a property
|
|
* @obj: drm mode object to get property value from
|
|
* @property: property to retrieve
|
|
* @val: storage for the property value
|
|
*
|
|
* This function retrieves the softare state of the given property for the given
|
|
* property. Since there is no driver callback to retrieve the current property
|
|
* value this might be out of sync with the hardware, depending upon the driver
|
|
* and property.
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_object_property_get_value(struct drm_mode_object *obj,
|
|
struct drm_property *property, uint64_t *val)
|
|
{
|
|
int i;
|
|
|
|
/* read-only properties bypass atomic mechanism and still store
|
|
* their value in obj->properties->values[].. mostly to avoid
|
|
* having to deal w/ EDID and similar props in atomic paths:
|
|
*/
|
|
if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
|
|
!(property->flags & DRM_MODE_PROP_IMMUTABLE))
|
|
return drm_atomic_get_property(obj, property, val);
|
|
|
|
for (i = 0; i < obj->properties->count; i++) {
|
|
if (obj->properties->properties[i] == property) {
|
|
*val = obj->properties->values[i];
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL(drm_object_property_get_value);
|
|
|
|
/**
|
|
* drm_mode_getproperty_ioctl - get the property metadata
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* This function retrieves the metadata for a given property, like the different
|
|
* possible values for an enum property or the limits for a range property.
|
|
*
|
|
* Blob properties are special
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_getproperty_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_get_property *out_resp = data;
|
|
struct drm_property *property;
|
|
int enum_count = 0;
|
|
int value_count = 0;
|
|
int ret = 0, i;
|
|
int copied;
|
|
struct drm_property_enum *prop_enum;
|
|
struct drm_mode_property_enum __user *enum_ptr;
|
|
uint64_t __user *values_ptr;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
drm_modeset_lock_all(dev);
|
|
property = drm_property_find(dev, out_resp->prop_id);
|
|
if (!property) {
|
|
ret = -ENOENT;
|
|
goto done;
|
|
}
|
|
|
|
if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
|
|
drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
|
|
list_for_each_entry(prop_enum, &property->enum_list, head)
|
|
enum_count++;
|
|
}
|
|
|
|
value_count = property->num_values;
|
|
|
|
strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
|
|
out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
|
|
out_resp->flags = property->flags;
|
|
|
|
if ((out_resp->count_values >= value_count) && value_count) {
|
|
values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
|
|
for (i = 0; i < value_count; i++) {
|
|
if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
|
|
ret = -EFAULT;
|
|
goto done;
|
|
}
|
|
}
|
|
}
|
|
out_resp->count_values = value_count;
|
|
|
|
if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
|
|
drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
|
|
if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
|
|
copied = 0;
|
|
enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
|
|
list_for_each_entry(prop_enum, &property->enum_list, head) {
|
|
|
|
if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
|
|
ret = -EFAULT;
|
|
goto done;
|
|
}
|
|
|
|
if (copy_to_user(&enum_ptr[copied].name,
|
|
&prop_enum->name, DRM_PROP_NAME_LEN)) {
|
|
ret = -EFAULT;
|
|
goto done;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
out_resp->count_enum_blobs = enum_count;
|
|
}
|
|
|
|
/*
|
|
* NOTE: The idea seems to have been to use this to read all the blob
|
|
* property values. But nothing ever added them to the corresponding
|
|
* list, userspace always used the special-purpose get_blob ioctl to
|
|
* read the value for a blob property. It also doesn't make a lot of
|
|
* sense to return values here when everything else is just metadata for
|
|
* the property itself.
|
|
*/
|
|
if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
|
|
out_resp->count_enum_blobs = 0;
|
|
done:
|
|
drm_modeset_unlock_all(dev);
|
|
return ret;
|
|
}
|
|
|
|
static void drm_property_free_blob(struct kref *kref)
|
|
{
|
|
struct drm_property_blob *blob =
|
|
container_of(kref, struct drm_property_blob, base.refcount);
|
|
|
|
mutex_lock(&blob->dev->mode_config.blob_lock);
|
|
list_del(&blob->head_global);
|
|
mutex_unlock(&blob->dev->mode_config.blob_lock);
|
|
|
|
drm_mode_object_unregister(blob->dev, &blob->base);
|
|
|
|
kfree(blob);
|
|
}
|
|
|
|
/**
|
|
* drm_property_create_blob - Create new blob property
|
|
*
|
|
* Creates a new blob property for a specified DRM device, optionally
|
|
* copying data.
|
|
*
|
|
* @dev: DRM device to create property for
|
|
* @length: Length to allocate for blob data
|
|
* @data: If specified, copies data into blob
|
|
*
|
|
* Returns:
|
|
* New blob property with a single reference on success, or an ERR_PTR
|
|
* value on failure.
|
|
*/
|
|
struct drm_property_blob *
|
|
drm_property_create_blob(struct drm_device *dev, size_t length,
|
|
const void *data)
|
|
{
|
|
struct drm_property_blob *blob;
|
|
int ret;
|
|
|
|
if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
|
|
if (!blob)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
/* This must be explicitly initialised, so we can safely call list_del
|
|
* on it in the removal handler, even if it isn't in a file list. */
|
|
INIT_LIST_HEAD(&blob->head_file);
|
|
blob->length = length;
|
|
blob->dev = dev;
|
|
|
|
if (data)
|
|
memcpy(blob->data, data, length);
|
|
|
|
ret = drm_mode_object_get_reg(dev, &blob->base, DRM_MODE_OBJECT_BLOB,
|
|
true, drm_property_free_blob);
|
|
if (ret) {
|
|
kfree(blob);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
mutex_lock(&dev->mode_config.blob_lock);
|
|
list_add_tail(&blob->head_global,
|
|
&dev->mode_config.property_blob_list);
|
|
mutex_unlock(&dev->mode_config.blob_lock);
|
|
|
|
return blob;
|
|
}
|
|
EXPORT_SYMBOL(drm_property_create_blob);
|
|
|
|
/**
|
|
* drm_property_unreference_blob - Unreference a blob property
|
|
*
|
|
* Drop a reference on a blob property. May free the object.
|
|
*
|
|
* @blob: Pointer to blob property
|
|
*/
|
|
void drm_property_unreference_blob(struct drm_property_blob *blob)
|
|
{
|
|
if (!blob)
|
|
return;
|
|
|
|
drm_mode_object_unreference(&blob->base);
|
|
}
|
|
EXPORT_SYMBOL(drm_property_unreference_blob);
|
|
|
|
/**
|
|
* drm_property_destroy_user_blobs - destroy all blobs created by this client
|
|
* @dev: DRM device
|
|
* @file_priv: destroy all blobs owned by this file handle
|
|
*/
|
|
void drm_property_destroy_user_blobs(struct drm_device *dev,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_property_blob *blob, *bt;
|
|
|
|
/*
|
|
* When the file gets released that means no one else can access the
|
|
* blob list any more, so no need to grab dev->blob_lock.
|
|
*/
|
|
list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
|
|
list_del_init(&blob->head_file);
|
|
drm_property_unreference_blob(blob);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* drm_property_reference_blob - Take a reference on an existing property
|
|
*
|
|
* Take a new reference on an existing blob property.
|
|
*
|
|
* @blob: Pointer to blob property
|
|
*/
|
|
struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
|
|
{
|
|
drm_mode_object_reference(&blob->base);
|
|
return blob;
|
|
}
|
|
EXPORT_SYMBOL(drm_property_reference_blob);
|
|
|
|
/**
|
|
* drm_property_lookup_blob - look up a blob property and take a reference
|
|
* @dev: drm device
|
|
* @id: id of the blob property
|
|
*
|
|
* If successful, this takes an additional reference to the blob property.
|
|
* callers need to make sure to eventually unreference the returned property
|
|
* again, using @drm_property_unreference_blob.
|
|
*/
|
|
struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
|
|
uint32_t id)
|
|
{
|
|
struct drm_mode_object *obj;
|
|
struct drm_property_blob *blob = NULL;
|
|
|
|
obj = _object_find(dev, id, DRM_MODE_OBJECT_BLOB);
|
|
if (obj)
|
|
blob = obj_to_blob(obj);
|
|
return blob;
|
|
}
|
|
EXPORT_SYMBOL(drm_property_lookup_blob);
|
|
|
|
/**
|
|
* drm_property_replace_global_blob - atomically replace existing blob property
|
|
* @dev: drm device
|
|
* @replace: location of blob property pointer to be replaced
|
|
* @length: length of data for new blob, or 0 for no data
|
|
* @data: content for new blob, or NULL for no data
|
|
* @obj_holds_id: optional object for property holding blob ID
|
|
* @prop_holds_id: optional property holding blob ID
|
|
* @return 0 on success or error on failure
|
|
*
|
|
* This function will atomically replace a global property in the blob list,
|
|
* optionally updating a property which holds the ID of that property. It is
|
|
* guaranteed to be atomic: no caller will be allowed to see intermediate
|
|
* results, and either the entire operation will succeed and clean up the
|
|
* previous property, or it will fail and the state will be unchanged.
|
|
*
|
|
* If length is 0 or data is NULL, no new blob will be created, and the holding
|
|
* property, if specified, will be set to 0.
|
|
*
|
|
* Access to the replace pointer is assumed to be protected by the caller, e.g.
|
|
* by holding the relevant modesetting object lock for its parent.
|
|
*
|
|
* For example, a drm_connector has a 'PATH' property, which contains the ID
|
|
* of a blob property with the value of the MST path information. Calling this
|
|
* function with replace pointing to the connector's path_blob_ptr, length and
|
|
* data set for the new path information, obj_holds_id set to the connector's
|
|
* base object, and prop_holds_id set to the path property name, will perform
|
|
* a completely atomic update. The access to path_blob_ptr is protected by the
|
|
* caller holding a lock on the connector.
|
|
*/
|
|
static int drm_property_replace_global_blob(struct drm_device *dev,
|
|
struct drm_property_blob **replace,
|
|
size_t length,
|
|
const void *data,
|
|
struct drm_mode_object *obj_holds_id,
|
|
struct drm_property *prop_holds_id)
|
|
{
|
|
struct drm_property_blob *new_blob = NULL;
|
|
struct drm_property_blob *old_blob = NULL;
|
|
int ret;
|
|
|
|
WARN_ON(replace == NULL);
|
|
|
|
old_blob = *replace;
|
|
|
|
if (length && data) {
|
|
new_blob = drm_property_create_blob(dev, length, data);
|
|
if (IS_ERR(new_blob))
|
|
return PTR_ERR(new_blob);
|
|
}
|
|
|
|
/* This does not need to be synchronised with blob_lock, as the
|
|
* get_properties ioctl locks all modesetting objects, and
|
|
* obj_holds_id must be locked before calling here, so we cannot
|
|
* have its value out of sync with the list membership modified
|
|
* below under blob_lock. */
|
|
if (obj_holds_id) {
|
|
ret = drm_object_property_set_value(obj_holds_id,
|
|
prop_holds_id,
|
|
new_blob ?
|
|
new_blob->base.id : 0);
|
|
if (ret != 0)
|
|
goto err_created;
|
|
}
|
|
|
|
drm_property_unreference_blob(old_blob);
|
|
*replace = new_blob;
|
|
|
|
return 0;
|
|
|
|
err_created:
|
|
drm_property_unreference_blob(new_blob);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_getblob_ioctl - get the contents of a blob property value
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* This function retrieves the contents of a blob property. The value stored in
|
|
* an object's blob property is just a normal modeset object id.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_getblob_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_get_blob *out_resp = data;
|
|
struct drm_property_blob *blob;
|
|
int ret = 0;
|
|
void __user *blob_ptr;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
blob = drm_property_lookup_blob(dev, out_resp->blob_id);
|
|
if (!blob)
|
|
return -ENOENT;
|
|
|
|
if (out_resp->length == blob->length) {
|
|
blob_ptr = (void __user *)(unsigned long)out_resp->data;
|
|
if (copy_to_user(blob_ptr, blob->data, blob->length)) {
|
|
ret = -EFAULT;
|
|
goto unref;
|
|
}
|
|
}
|
|
out_resp->length = blob->length;
|
|
unref:
|
|
drm_property_unreference_blob(blob);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_createblob_ioctl - create a new blob property
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* This function creates a new blob property with user-defined values. In order
|
|
* to give us sensible validation and checking when creating, rather than at
|
|
* every potential use, we also require a type to be provided upfront.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_createblob_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_create_blob *out_resp = data;
|
|
struct drm_property_blob *blob;
|
|
void __user *blob_ptr;
|
|
int ret = 0;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
blob = drm_property_create_blob(dev, out_resp->length, NULL);
|
|
if (IS_ERR(blob))
|
|
return PTR_ERR(blob);
|
|
|
|
blob_ptr = (void __user *)(unsigned long)out_resp->data;
|
|
if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
|
|
ret = -EFAULT;
|
|
goto out_blob;
|
|
}
|
|
|
|
/* Dropping the lock between create_blob and our access here is safe
|
|
* as only the same file_priv can remove the blob; at this point, it is
|
|
* not associated with any file_priv. */
|
|
mutex_lock(&dev->mode_config.blob_lock);
|
|
out_resp->blob_id = blob->base.id;
|
|
list_add_tail(&blob->head_file, &file_priv->blobs);
|
|
mutex_unlock(&dev->mode_config.blob_lock);
|
|
|
|
return 0;
|
|
|
|
out_blob:
|
|
drm_property_unreference_blob(blob);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_destroyblob_ioctl - destroy a user blob property
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* Destroy an existing user-defined blob property.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_destroyblob_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_destroy_blob *out_resp = data;
|
|
struct drm_property_blob *blob = NULL, *bt;
|
|
bool found = false;
|
|
int ret = 0;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
blob = drm_property_lookup_blob(dev, out_resp->blob_id);
|
|
if (!blob)
|
|
return -ENOENT;
|
|
|
|
mutex_lock(&dev->mode_config.blob_lock);
|
|
/* Ensure the property was actually created by this user. */
|
|
list_for_each_entry(bt, &file_priv->blobs, head_file) {
|
|
if (bt == blob) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
ret = -EPERM;
|
|
goto err;
|
|
}
|
|
|
|
/* We must drop head_file here, because we may not be the last
|
|
* reference on the blob. */
|
|
list_del_init(&blob->head_file);
|
|
mutex_unlock(&dev->mode_config.blob_lock);
|
|
|
|
/* One reference from lookup, and one from the filp. */
|
|
drm_property_unreference_blob(blob);
|
|
drm_property_unreference_blob(blob);
|
|
|
|
return 0;
|
|
|
|
err:
|
|
mutex_unlock(&dev->mode_config.blob_lock);
|
|
drm_property_unreference_blob(blob);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_connector_set_path_property - set tile property on connector
|
|
* @connector: connector to set property on.
|
|
* @path: path to use for property; must not be NULL.
|
|
*
|
|
* This creates a property to expose to userspace to specify a
|
|
* connector path. This is mainly used for DisplayPort MST where
|
|
* connectors have a topology and we want to allow userspace to give
|
|
* them more meaningful names.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_connector_set_path_property(struct drm_connector *connector,
|
|
const char *path)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
int ret;
|
|
|
|
ret = drm_property_replace_global_blob(dev,
|
|
&connector->path_blob_ptr,
|
|
strlen(path) + 1,
|
|
path,
|
|
&connector->base,
|
|
dev->mode_config.path_property);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_connector_set_path_property);
|
|
|
|
/**
|
|
* drm_mode_connector_set_tile_property - set tile property on connector
|
|
* @connector: connector to set property on.
|
|
*
|
|
* This looks up the tile information for a connector, and creates a
|
|
* property for userspace to parse if it exists. The property is of
|
|
* the form of 8 integers using ':' as a separator.
|
|
*
|
|
* Returns:
|
|
* Zero on success, errno on failure.
|
|
*/
|
|
int drm_mode_connector_set_tile_property(struct drm_connector *connector)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
char tile[256];
|
|
int ret;
|
|
|
|
if (!connector->has_tile) {
|
|
ret = drm_property_replace_global_blob(dev,
|
|
&connector->tile_blob_ptr,
|
|
0,
|
|
NULL,
|
|
&connector->base,
|
|
dev->mode_config.tile_property);
|
|
return ret;
|
|
}
|
|
|
|
snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
|
|
connector->tile_group->id, connector->tile_is_single_monitor,
|
|
connector->num_h_tile, connector->num_v_tile,
|
|
connector->tile_h_loc, connector->tile_v_loc,
|
|
connector->tile_h_size, connector->tile_v_size);
|
|
|
|
ret = drm_property_replace_global_blob(dev,
|
|
&connector->tile_blob_ptr,
|
|
strlen(tile) + 1,
|
|
tile,
|
|
&connector->base,
|
|
dev->mode_config.tile_property);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
|
|
|
|
/**
|
|
* drm_mode_connector_update_edid_property - update the edid property of a connector
|
|
* @connector: drm connector
|
|
* @edid: new value of the edid property
|
|
*
|
|
* This function creates a new blob modeset object and assigns its id to the
|
|
* connector's edid property.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_connector_update_edid_property(struct drm_connector *connector,
|
|
const struct edid *edid)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
size_t size = 0;
|
|
int ret;
|
|
|
|
/* ignore requests to set edid when overridden */
|
|
if (connector->override_edid)
|
|
return 0;
|
|
|
|
if (edid)
|
|
size = EDID_LENGTH * (1 + edid->extensions);
|
|
|
|
ret = drm_property_replace_global_blob(dev,
|
|
&connector->edid_blob_ptr,
|
|
size,
|
|
edid,
|
|
&connector->base,
|
|
dev->mode_config.edid_property);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
|
|
|
|
/* Some properties could refer to dynamic refcnt'd objects, or things that
|
|
* need special locking to handle lifetime issues (ie. to ensure the prop
|
|
* value doesn't become invalid part way through the property update due to
|
|
* race). The value returned by reference via 'obj' should be passed back
|
|
* to drm_property_change_valid_put() after the property is set (and the
|
|
* object to which the property is attached has a chance to take it's own
|
|
* reference).
|
|
*/
|
|
bool drm_property_change_valid_get(struct drm_property *property,
|
|
uint64_t value, struct drm_mode_object **ref)
|
|
{
|
|
int i;
|
|
|
|
if (property->flags & DRM_MODE_PROP_IMMUTABLE)
|
|
return false;
|
|
|
|
*ref = NULL;
|
|
|
|
if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
|
|
if (value < property->values[0] || value > property->values[1])
|
|
return false;
|
|
return true;
|
|
} else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
|
|
int64_t svalue = U642I64(value);
|
|
|
|
if (svalue < U642I64(property->values[0]) ||
|
|
svalue > U642I64(property->values[1]))
|
|
return false;
|
|
return true;
|
|
} else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
|
|
uint64_t valid_mask = 0;
|
|
|
|
for (i = 0; i < property->num_values; i++)
|
|
valid_mask |= (1ULL << property->values[i]);
|
|
return !(value & ~valid_mask);
|
|
} else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
|
|
struct drm_property_blob *blob;
|
|
|
|
if (value == 0)
|
|
return true;
|
|
|
|
blob = drm_property_lookup_blob(property->dev, value);
|
|
if (blob) {
|
|
*ref = &blob->base;
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
} else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
|
|
/* a zero value for an object property translates to null: */
|
|
if (value == 0)
|
|
return true;
|
|
|
|
*ref = _object_find(property->dev, value, property->values[0]);
|
|
return *ref != NULL;
|
|
}
|
|
|
|
for (i = 0; i < property->num_values; i++)
|
|
if (property->values[i] == value)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
void drm_property_change_valid_put(struct drm_property *property,
|
|
struct drm_mode_object *ref)
|
|
{
|
|
if (!ref)
|
|
return;
|
|
|
|
if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
|
|
drm_mode_object_unreference(ref);
|
|
} else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
|
|
drm_property_unreference_blob(obj_to_blob(ref));
|
|
}
|
|
|
|
/**
|
|
* drm_mode_connector_property_set_ioctl - set the current value of a connector property
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* This function sets the current value for a connectors's property. It also
|
|
* calls into a driver's ->set_property callback to update the hardware state
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_connector_set_property *conn_set_prop = data;
|
|
struct drm_mode_obj_set_property obj_set_prop = {
|
|
.value = conn_set_prop->value,
|
|
.prop_id = conn_set_prop->prop_id,
|
|
.obj_id = conn_set_prop->connector_id,
|
|
.obj_type = DRM_MODE_OBJECT_CONNECTOR
|
|
};
|
|
|
|
/* It does all the locking and checking we need */
|
|
return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
|
|
}
|
|
|
|
static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
|
|
struct drm_property *property,
|
|
uint64_t value)
|
|
{
|
|
int ret = -EINVAL;
|
|
struct drm_connector *connector = obj_to_connector(obj);
|
|
|
|
/* Do DPMS ourselves */
|
|
if (property == connector->dev->mode_config.dpms_property) {
|
|
ret = (*connector->funcs->dpms)(connector, (int)value);
|
|
} else if (connector->funcs->set_property)
|
|
ret = connector->funcs->set_property(connector, property, value);
|
|
|
|
/* store the property value if successful */
|
|
if (!ret)
|
|
drm_object_property_set_value(&connector->base, property, value);
|
|
return ret;
|
|
}
|
|
|
|
static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
|
|
struct drm_property *property,
|
|
uint64_t value)
|
|
{
|
|
int ret = -EINVAL;
|
|
struct drm_crtc *crtc = obj_to_crtc(obj);
|
|
|
|
if (crtc->funcs->set_property)
|
|
ret = crtc->funcs->set_property(crtc, property, value);
|
|
if (!ret)
|
|
drm_object_property_set_value(obj, property, value);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_plane_set_obj_prop - set the value of a property
|
|
* @plane: drm plane object to set property value for
|
|
* @property: property to set
|
|
* @value: value the property should be set to
|
|
*
|
|
* This functions sets a given property on a given plane object. This function
|
|
* calls the driver's ->set_property callback and changes the software state of
|
|
* the property if the callback succeeds.
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
|
|
struct drm_property *property,
|
|
uint64_t value)
|
|
{
|
|
int ret = -EINVAL;
|
|
struct drm_mode_object *obj = &plane->base;
|
|
|
|
if (plane->funcs->set_property)
|
|
ret = plane->funcs->set_property(plane, property, value);
|
|
if (!ret)
|
|
drm_object_property_set_value(obj, property, value);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
|
|
|
|
/**
|
|
* drm_mode_obj_get_properties_ioctl - get the current value of a object's property
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* This function retrieves the current value for an object's property. Compared
|
|
* to the connector specific ioctl this one is extended to also work on crtc and
|
|
* plane objects.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_obj_get_properties *arg = data;
|
|
struct drm_mode_object *obj;
|
|
int ret = 0;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
drm_modeset_lock_all(dev);
|
|
|
|
obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
|
|
if (!obj) {
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
if (!obj->properties) {
|
|
ret = -EINVAL;
|
|
goto out_unref;
|
|
}
|
|
|
|
ret = get_properties(obj, file_priv->atomic,
|
|
(uint32_t __user *)(unsigned long)(arg->props_ptr),
|
|
(uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
|
|
&arg->count_props);
|
|
|
|
out_unref:
|
|
drm_mode_object_unreference(obj);
|
|
out:
|
|
drm_modeset_unlock_all(dev);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_obj_set_property_ioctl - set the current value of an object's property
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* This function sets the current value for an object's property. It also calls
|
|
* into a driver's ->set_property callback to update the hardware state.
|
|
* Compared to the connector specific ioctl this one is extended to also work on
|
|
* crtc and plane objects.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_obj_set_property *arg = data;
|
|
struct drm_mode_object *arg_obj;
|
|
struct drm_mode_object *prop_obj;
|
|
struct drm_property *property;
|
|
int i, ret = -EINVAL;
|
|
struct drm_mode_object *ref;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
drm_modeset_lock_all(dev);
|
|
|
|
arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
|
|
if (!arg_obj) {
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
if (!arg_obj->properties)
|
|
goto out_unref;
|
|
|
|
for (i = 0; i < arg_obj->properties->count; i++)
|
|
if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
|
|
break;
|
|
|
|
if (i == arg_obj->properties->count)
|
|
goto out_unref;
|
|
|
|
prop_obj = drm_mode_object_find(dev, arg->prop_id,
|
|
DRM_MODE_OBJECT_PROPERTY);
|
|
if (!prop_obj) {
|
|
ret = -ENOENT;
|
|
goto out_unref;
|
|
}
|
|
property = obj_to_property(prop_obj);
|
|
|
|
if (!drm_property_change_valid_get(property, arg->value, &ref))
|
|
goto out_unref;
|
|
|
|
switch (arg_obj->type) {
|
|
case DRM_MODE_OBJECT_CONNECTOR:
|
|
ret = drm_mode_connector_set_obj_prop(arg_obj, property,
|
|
arg->value);
|
|
break;
|
|
case DRM_MODE_OBJECT_CRTC:
|
|
ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
|
|
break;
|
|
case DRM_MODE_OBJECT_PLANE:
|
|
ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
|
|
property, arg->value);
|
|
break;
|
|
}
|
|
|
|
drm_property_change_valid_put(property, ref);
|
|
|
|
out_unref:
|
|
drm_mode_object_unreference(arg_obj);
|
|
out:
|
|
drm_modeset_unlock_all(dev);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_connector_attach_encoder - attach a connector to an encoder
|
|
* @connector: connector to attach
|
|
* @encoder: encoder to attach @connector to
|
|
*
|
|
* This function links up a connector to an encoder. Note that the routing
|
|
* restrictions between encoders and crtcs are exposed to userspace through the
|
|
* possible_clones and possible_crtcs bitmasks.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_connector_attach_encoder(struct drm_connector *connector,
|
|
struct drm_encoder *encoder)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* In the past, drivers have attempted to model the static association
|
|
* of connector to encoder in simple connector/encoder devices using a
|
|
* direct assignment of connector->encoder = encoder. This connection
|
|
* is a logical one and the responsibility of the core, so drivers are
|
|
* expected not to mess with this.
|
|
*
|
|
* Note that the error return should've been enough here, but a large
|
|
* majority of drivers ignores the return value, so add in a big WARN
|
|
* to get people's attention.
|
|
*/
|
|
if (WARN_ON(connector->encoder))
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
|
|
if (connector->encoder_ids[i] == 0) {
|
|
connector->encoder_ids[i] = encoder->base.id;
|
|
return 0;
|
|
}
|
|
}
|
|
return -ENOMEM;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
|
|
|
|
/**
|
|
* drm_mode_crtc_set_gamma_size - set the gamma table size
|
|
* @crtc: CRTC to set the gamma table size for
|
|
* @gamma_size: size of the gamma table
|
|
*
|
|
* Drivers which support gamma tables should set this to the supported gamma
|
|
* table size when initializing the CRTC. Currently the drm core only supports a
|
|
* fixed gamma table size.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
|
|
int gamma_size)
|
|
{
|
|
uint16_t *r_base, *g_base, *b_base;
|
|
int i;
|
|
|
|
crtc->gamma_size = gamma_size;
|
|
|
|
crtc->gamma_store = kcalloc(gamma_size, sizeof(uint16_t) * 3,
|
|
GFP_KERNEL);
|
|
if (!crtc->gamma_store) {
|
|
crtc->gamma_size = 0;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
r_base = crtc->gamma_store;
|
|
g_base = r_base + gamma_size;
|
|
b_base = g_base + gamma_size;
|
|
for (i = 0; i < gamma_size; i++) {
|
|
r_base[i] = i << 8;
|
|
g_base[i] = i << 8;
|
|
b_base[i] = i << 8;
|
|
}
|
|
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
|
|
|
|
/**
|
|
* drm_mode_gamma_set_ioctl - set the gamma table
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* Set the gamma table of a CRTC to the one passed in by the user. Userspace can
|
|
* inquire the required gamma table size through drm_mode_gamma_get_ioctl.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_gamma_set_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_crtc_lut *crtc_lut = data;
|
|
struct drm_crtc *crtc;
|
|
void *r_base, *g_base, *b_base;
|
|
int size;
|
|
int ret = 0;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
drm_modeset_lock_all(dev);
|
|
crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
|
|
if (!crtc) {
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
if (crtc->funcs->gamma_set == NULL) {
|
|
ret = -ENOSYS;
|
|
goto out;
|
|
}
|
|
|
|
/* memcpy into gamma store */
|
|
if (crtc_lut->gamma_size != crtc->gamma_size) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
size = crtc_lut->gamma_size * (sizeof(uint16_t));
|
|
r_base = crtc->gamma_store;
|
|
if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
g_base = r_base + size;
|
|
if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
b_base = g_base + size;
|
|
if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
ret = crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
|
|
|
|
out:
|
|
drm_modeset_unlock_all(dev);
|
|
return ret;
|
|
|
|
}
|
|
|
|
/**
|
|
* drm_mode_gamma_get_ioctl - get the gamma table
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* Copy the current gamma table into the storage provided. This also provides
|
|
* the gamma table size the driver expects, which can be used to size the
|
|
* allocated storage.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_gamma_get_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_crtc_lut *crtc_lut = data;
|
|
struct drm_crtc *crtc;
|
|
void *r_base, *g_base, *b_base;
|
|
int size;
|
|
int ret = 0;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
drm_modeset_lock_all(dev);
|
|
crtc = drm_crtc_find(dev, crtc_lut->crtc_id);
|
|
if (!crtc) {
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
/* memcpy into gamma store */
|
|
if (crtc_lut->gamma_size != crtc->gamma_size) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
size = crtc_lut->gamma_size * (sizeof(uint16_t));
|
|
r_base = crtc->gamma_store;
|
|
if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
g_base = r_base + size;
|
|
if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
b_base = g_base + size;
|
|
if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
out:
|
|
drm_modeset_unlock_all(dev);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_page_flip_ioctl - schedule an asynchronous fb update
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* This schedules an asynchronous update on a given CRTC, called page flip.
|
|
* Optionally a drm event is generated to signal the completion of the event.
|
|
* Generic drivers cannot assume that a pageflip with changed framebuffer
|
|
* properties (including driver specific metadata like tiling layout) will work,
|
|
* but some drivers support e.g. pixel format changes through the pageflip
|
|
* ioctl.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_page_flip_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_crtc_page_flip *page_flip = data;
|
|
struct drm_crtc *crtc;
|
|
struct drm_framebuffer *fb = NULL;
|
|
struct drm_pending_vblank_event *e = NULL;
|
|
int ret = -EINVAL;
|
|
|
|
if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
|
|
page_flip->reserved != 0)
|
|
return -EINVAL;
|
|
|
|
if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
|
|
return -EINVAL;
|
|
|
|
crtc = drm_crtc_find(dev, page_flip->crtc_id);
|
|
if (!crtc)
|
|
return -ENOENT;
|
|
|
|
drm_modeset_lock_crtc(crtc, crtc->primary);
|
|
if (crtc->primary->fb == NULL) {
|
|
/* The framebuffer is currently unbound, presumably
|
|
* due to a hotplug event, that userspace has not
|
|
* yet discovered.
|
|
*/
|
|
ret = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
if (crtc->funcs->page_flip == NULL)
|
|
goto out;
|
|
|
|
fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
|
|
if (!fb) {
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
if (crtc->state) {
|
|
const struct drm_plane_state *state = crtc->primary->state;
|
|
|
|
ret = check_src_coords(state->src_x, state->src_y,
|
|
state->src_w, state->src_h, fb);
|
|
} else {
|
|
ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
|
|
}
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (crtc->primary->fb->pixel_format != fb->pixel_format) {
|
|
DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
|
|
e = kzalloc(sizeof *e, GFP_KERNEL);
|
|
if (!e) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
|
|
e->event.base.length = sizeof(e->event);
|
|
e->event.user_data = page_flip->user_data;
|
|
ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
|
|
if (ret) {
|
|
kfree(e);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
crtc->primary->old_fb = crtc->primary->fb;
|
|
ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
|
|
if (ret) {
|
|
if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
|
|
drm_event_cancel_free(dev, &e->base);
|
|
/* Keep the old fb, don't unref it. */
|
|
crtc->primary->old_fb = NULL;
|
|
} else {
|
|
crtc->primary->fb = fb;
|
|
/* Unref only the old framebuffer. */
|
|
fb = NULL;
|
|
}
|
|
|
|
out:
|
|
if (fb)
|
|
drm_framebuffer_unreference(fb);
|
|
if (crtc->primary->old_fb)
|
|
drm_framebuffer_unreference(crtc->primary->old_fb);
|
|
crtc->primary->old_fb = NULL;
|
|
drm_modeset_unlock_crtc(crtc);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_config_reset - call ->reset callbacks
|
|
* @dev: drm device
|
|
*
|
|
* This functions calls all the crtc's, encoder's and connector's ->reset
|
|
* callback. Drivers can use this in e.g. their driver load or resume code to
|
|
* reset hardware and software state.
|
|
*/
|
|
void drm_mode_config_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
struct drm_plane *plane;
|
|
struct drm_encoder *encoder;
|
|
struct drm_connector *connector;
|
|
|
|
drm_for_each_plane(plane, dev)
|
|
if (plane->funcs->reset)
|
|
plane->funcs->reset(plane);
|
|
|
|
drm_for_each_crtc(crtc, dev)
|
|
if (crtc->funcs->reset)
|
|
crtc->funcs->reset(crtc);
|
|
|
|
drm_for_each_encoder(encoder, dev)
|
|
if (encoder->funcs->reset)
|
|
encoder->funcs->reset(encoder);
|
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
drm_for_each_connector(connector, dev)
|
|
if (connector->funcs->reset)
|
|
connector->funcs->reset(connector);
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_config_reset);
|
|
|
|
/**
|
|
* drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* This creates a new dumb buffer in the driver's backing storage manager (GEM,
|
|
* TTM or something else entirely) and returns the resulting buffer handle. This
|
|
* handle can then be wrapped up into a framebuffer modeset object.
|
|
*
|
|
* Note that userspace is not allowed to use such objects for render
|
|
* acceleration - drivers must create their own private ioctls for such a use
|
|
* case.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_create_dumb_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_create_dumb *args = data;
|
|
u32 cpp, stride, size;
|
|
|
|
if (!dev->driver->dumb_create)
|
|
return -ENOSYS;
|
|
if (!args->width || !args->height || !args->bpp)
|
|
return -EINVAL;
|
|
|
|
/* overflow checks for 32bit size calculations */
|
|
/* NOTE: DIV_ROUND_UP() can overflow */
|
|
cpp = DIV_ROUND_UP(args->bpp, 8);
|
|
if (!cpp || cpp > 0xffffffffU / args->width)
|
|
return -EINVAL;
|
|
stride = cpp * args->width;
|
|
if (args->height > 0xffffffffU / stride)
|
|
return -EINVAL;
|
|
|
|
/* test for wrap-around */
|
|
size = args->height * stride;
|
|
if (PAGE_ALIGN(size) == 0)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* handle, pitch and size are output parameters. Zero them out to
|
|
* prevent drivers from accidentally using uninitialized data. Since
|
|
* not all existing userspace is clearing these fields properly we
|
|
* cannot reject IOCTL with garbage in them.
|
|
*/
|
|
args->handle = 0;
|
|
args->pitch = 0;
|
|
args->size = 0;
|
|
|
|
return dev->driver->dumb_create(file_priv, dev, args);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* Allocate an offset in the drm device node's address space to be able to
|
|
* memory map a dumb buffer.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_map_dumb *args = data;
|
|
|
|
/* call driver ioctl to get mmap offset */
|
|
if (!dev->driver->dumb_map_offset)
|
|
return -ENOSYS;
|
|
|
|
return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* This destroys the userspace handle for the given dumb backing storage buffer.
|
|
* Since buffer objects must be reference counted in the kernel a buffer object
|
|
* won't be immediately freed if a framebuffer modeset object still uses it.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_destroy_dumb *args = data;
|
|
|
|
if (!dev->driver->dumb_destroy)
|
|
return -ENOSYS;
|
|
|
|
return dev->driver->dumb_destroy(file_priv, dev, args->handle);
|
|
}
|
|
|
|
/**
|
|
* drm_rotation_simplify() - Try to simplify the rotation
|
|
* @rotation: Rotation to be simplified
|
|
* @supported_rotations: Supported rotations
|
|
*
|
|
* Attempt to simplify the rotation to a form that is supported.
|
|
* Eg. if the hardware supports everything except DRM_REFLECT_X
|
|
* one could call this function like this:
|
|
*
|
|
* drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) |
|
|
* BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) |
|
|
* BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y));
|
|
*
|
|
* to eliminate the DRM_ROTATE_X flag. Depending on what kind of
|
|
* transforms the hardware supports, this function may not
|
|
* be able to produce a supported transform, so the caller should
|
|
* check the result afterwards.
|
|
*/
|
|
unsigned int drm_rotation_simplify(unsigned int rotation,
|
|
unsigned int supported_rotations)
|
|
{
|
|
if (rotation & ~supported_rotations) {
|
|
rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
|
|
rotation = (rotation & DRM_REFLECT_MASK) |
|
|
BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
|
|
}
|
|
|
|
return rotation;
|
|
}
|
|
EXPORT_SYMBOL(drm_rotation_simplify);
|
|
|
|
/**
|
|
* drm_mode_config_init - initialize DRM mode_configuration structure
|
|
* @dev: DRM device
|
|
*
|
|
* Initialize @dev's mode_config structure, used for tracking the graphics
|
|
* configuration of @dev.
|
|
*
|
|
* Since this initializes the modeset locks, no locking is possible. Which is no
|
|
* problem, since this should happen single threaded at init time. It is the
|
|
* driver's problem to ensure this guarantee.
|
|
*
|
|
*/
|
|
void drm_mode_config_init(struct drm_device *dev)
|
|
{
|
|
mutex_init(&dev->mode_config.mutex);
|
|
drm_modeset_lock_init(&dev->mode_config.connection_mutex);
|
|
mutex_init(&dev->mode_config.idr_mutex);
|
|
mutex_init(&dev->mode_config.fb_lock);
|
|
mutex_init(&dev->mode_config.blob_lock);
|
|
INIT_LIST_HEAD(&dev->mode_config.fb_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.crtc_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.connector_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.encoder_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.property_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.plane_list);
|
|
idr_init(&dev->mode_config.crtc_idr);
|
|
idr_init(&dev->mode_config.tile_idr);
|
|
ida_init(&dev->mode_config.connector_ida);
|
|
|
|
drm_modeset_lock_all(dev);
|
|
drm_mode_create_standard_properties(dev);
|
|
drm_modeset_unlock_all(dev);
|
|
|
|
/* Just to be sure */
|
|
dev->mode_config.num_fb = 0;
|
|
dev->mode_config.num_connector = 0;
|
|
dev->mode_config.num_crtc = 0;
|
|
dev->mode_config.num_encoder = 0;
|
|
dev->mode_config.num_overlay_plane = 0;
|
|
dev->mode_config.num_total_plane = 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_config_init);
|
|
|
|
/**
|
|
* drm_mode_config_cleanup - free up DRM mode_config info
|
|
* @dev: DRM device
|
|
*
|
|
* Free up all the connectors and CRTCs associated with this DRM device, then
|
|
* free up the framebuffers and associated buffer objects.
|
|
*
|
|
* Note that since this /should/ happen single-threaded at driver/device
|
|
* teardown time, no locking is required. It's the driver's job to ensure that
|
|
* this guarantee actually holds true.
|
|
*
|
|
* FIXME: cleanup any dangling user buffer objects too
|
|
*/
|
|
void drm_mode_config_cleanup(struct drm_device *dev)
|
|
{
|
|
struct drm_connector *connector, *ot;
|
|
struct drm_crtc *crtc, *ct;
|
|
struct drm_encoder *encoder, *enct;
|
|
struct drm_framebuffer *fb, *fbt;
|
|
struct drm_property *property, *pt;
|
|
struct drm_property_blob *blob, *bt;
|
|
struct drm_plane *plane, *plt;
|
|
|
|
list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
|
|
head) {
|
|
encoder->funcs->destroy(encoder);
|
|
}
|
|
|
|
list_for_each_entry_safe(connector, ot,
|
|
&dev->mode_config.connector_list, head) {
|
|
connector->funcs->destroy(connector);
|
|
}
|
|
|
|
list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
|
|
head) {
|
|
drm_property_destroy(dev, property);
|
|
}
|
|
|
|
list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
|
|
head) {
|
|
plane->funcs->destroy(plane);
|
|
}
|
|
|
|
list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
|
|
crtc->funcs->destroy(crtc);
|
|
}
|
|
|
|
list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
|
|
head_global) {
|
|
drm_property_unreference_blob(blob);
|
|
}
|
|
|
|
/*
|
|
* Single-threaded teardown context, so it's not required to grab the
|
|
* fb_lock to protect against concurrent fb_list access. Contrary, it
|
|
* would actually deadlock with the drm_framebuffer_cleanup function.
|
|
*
|
|
* Also, if there are any framebuffers left, that's a driver leak now,
|
|
* so politely WARN about this.
|
|
*/
|
|
WARN_ON(!list_empty(&dev->mode_config.fb_list));
|
|
list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
|
|
drm_framebuffer_free(&fb->base.refcount);
|
|
}
|
|
|
|
ida_destroy(&dev->mode_config.connector_ida);
|
|
idr_destroy(&dev->mode_config.tile_idr);
|
|
idr_destroy(&dev->mode_config.crtc_idr);
|
|
drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_config_cleanup);
|
|
|
|
struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
|
|
unsigned int supported_rotations)
|
|
{
|
|
static const struct drm_prop_enum_list props[] = {
|
|
{ DRM_ROTATE_0, "rotate-0" },
|
|
{ DRM_ROTATE_90, "rotate-90" },
|
|
{ DRM_ROTATE_180, "rotate-180" },
|
|
{ DRM_ROTATE_270, "rotate-270" },
|
|
{ DRM_REFLECT_X, "reflect-x" },
|
|
{ DRM_REFLECT_Y, "reflect-y" },
|
|
};
|
|
|
|
return drm_property_create_bitmask(dev, 0, "rotation",
|
|
props, ARRAY_SIZE(props),
|
|
supported_rotations);
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_rotation_property);
|
|
|
|
/**
|
|
* DOC: Tile group
|
|
*
|
|
* Tile groups are used to represent tiled monitors with a unique
|
|
* integer identifier. Tiled monitors using DisplayID v1.3 have
|
|
* a unique 8-byte handle, we store this in a tile group, so we
|
|
* have a common identifier for all tiles in a monitor group.
|
|
*/
|
|
static void drm_tile_group_free(struct kref *kref)
|
|
{
|
|
struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
|
|
struct drm_device *dev = tg->dev;
|
|
mutex_lock(&dev->mode_config.idr_mutex);
|
|
idr_remove(&dev->mode_config.tile_idr, tg->id);
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
kfree(tg);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_put_tile_group - drop a reference to a tile group.
|
|
* @dev: DRM device
|
|
* @tg: tile group to drop reference to.
|
|
*
|
|
* drop reference to tile group and free if 0.
|
|
*/
|
|
void drm_mode_put_tile_group(struct drm_device *dev,
|
|
struct drm_tile_group *tg)
|
|
{
|
|
kref_put(&tg->refcount, drm_tile_group_free);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_get_tile_group - get a reference to an existing tile group
|
|
* @dev: DRM device
|
|
* @topology: 8-bytes unique per monitor.
|
|
*
|
|
* Use the unique bytes to get a reference to an existing tile group.
|
|
*
|
|
* RETURNS:
|
|
* tile group or NULL if not found.
|
|
*/
|
|
struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
|
|
char topology[8])
|
|
{
|
|
struct drm_tile_group *tg;
|
|
int id;
|
|
mutex_lock(&dev->mode_config.idr_mutex);
|
|
idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
|
|
if (!memcmp(tg->group_data, topology, 8)) {
|
|
if (!kref_get_unless_zero(&tg->refcount))
|
|
tg = NULL;
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
return tg;
|
|
}
|
|
}
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_get_tile_group);
|
|
|
|
/**
|
|
* drm_mode_create_tile_group - create a tile group from a displayid description
|
|
* @dev: DRM device
|
|
* @topology: 8-bytes unique per monitor.
|
|
*
|
|
* Create a tile group for the unique monitor, and get a unique
|
|
* identifier for the tile group.
|
|
*
|
|
* RETURNS:
|
|
* new tile group or error.
|
|
*/
|
|
struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
|
|
char topology[8])
|
|
{
|
|
struct drm_tile_group *tg;
|
|
int ret;
|
|
|
|
tg = kzalloc(sizeof(*tg), GFP_KERNEL);
|
|
if (!tg)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
kref_init(&tg->refcount);
|
|
memcpy(tg->group_data, topology, 8);
|
|
tg->dev = dev;
|
|
|
|
mutex_lock(&dev->mode_config.idr_mutex);
|
|
ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
|
|
if (ret >= 0) {
|
|
tg->id = ret;
|
|
} else {
|
|
kfree(tg);
|
|
tg = ERR_PTR(ret);
|
|
}
|
|
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
return tg;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_tile_group);
|
|
|
|
/**
|
|
* drm_crtc_enable_color_mgmt - enable color management properties
|
|
* @crtc: DRM CRTC
|
|
* @degamma_lut_size: the size of the degamma lut (before CSC)
|
|
* @has_ctm: whether to attach ctm_property for CSC matrix
|
|
* @gamma_lut_size: the size of the gamma lut (after CSC)
|
|
*
|
|
* This function lets the driver enable the color correction
|
|
* properties on a CRTC. This includes 3 degamma, csc and gamma
|
|
* properties that userspace can set and 2 size properties to inform
|
|
* the userspace of the lut sizes. Each of the properties are
|
|
* optional. The gamma and degamma properties are only attached if
|
|
* their size is not 0 and ctm_property is only attached if has_ctm is
|
|
* true.
|
|
*/
|
|
void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc,
|
|
uint degamma_lut_size,
|
|
bool has_ctm,
|
|
uint gamma_lut_size)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
if (degamma_lut_size) {
|
|
drm_object_attach_property(&crtc->base,
|
|
config->degamma_lut_property, 0);
|
|
drm_object_attach_property(&crtc->base,
|
|
config->degamma_lut_size_property,
|
|
degamma_lut_size);
|
|
}
|
|
|
|
if (has_ctm)
|
|
drm_object_attach_property(&crtc->base,
|
|
config->ctm_property, 0);
|
|
|
|
if (gamma_lut_size) {
|
|
drm_object_attach_property(&crtc->base,
|
|
config->gamma_lut_property, 0);
|
|
drm_object_attach_property(&crtc->base,
|
|
config->gamma_lut_size_property,
|
|
gamma_lut_size);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(drm_crtc_enable_color_mgmt);
|