mirror of https://gitee.com/openkylin/linux.git
141 lines
3.9 KiB
C
141 lines
3.9 KiB
C
/*
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* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "drm/drm_edid.h"
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#include "msm_kms.h"
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#include "edp.h"
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struct edp_connector {
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struct drm_connector base;
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struct msm_edp *edp;
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};
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#define to_edp_connector(x) container_of(x, struct edp_connector, base)
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static enum drm_connector_status edp_connector_detect(
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struct drm_connector *connector, bool force)
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{
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struct edp_connector *edp_connector = to_edp_connector(connector);
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struct msm_edp *edp = edp_connector->edp;
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DBG("");
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return msm_edp_ctrl_panel_connected(edp->ctrl) ?
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connector_status_connected : connector_status_disconnected;
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}
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static void edp_connector_destroy(struct drm_connector *connector)
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{
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struct edp_connector *edp_connector = to_edp_connector(connector);
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DBG("");
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drm_connector_cleanup(connector);
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kfree(edp_connector);
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}
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static int edp_connector_get_modes(struct drm_connector *connector)
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{
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struct edp_connector *edp_connector = to_edp_connector(connector);
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struct msm_edp *edp = edp_connector->edp;
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struct edid *drm_edid = NULL;
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int ret = 0;
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DBG("");
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ret = msm_edp_ctrl_get_panel_info(edp->ctrl, connector, &drm_edid);
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if (ret)
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return ret;
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drm_connector_update_edid_property(connector, drm_edid);
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if (drm_edid)
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ret = drm_add_edid_modes(connector, drm_edid);
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return ret;
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}
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static int edp_connector_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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struct edp_connector *edp_connector = to_edp_connector(connector);
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struct msm_edp *edp = edp_connector->edp;
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struct msm_drm_private *priv = connector->dev->dev_private;
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struct msm_kms *kms = priv->kms;
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long actual, requested;
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requested = 1000 * mode->clock;
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actual = kms->funcs->round_pixclk(kms,
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requested, edp_connector->edp->encoder);
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DBG("requested=%ld, actual=%ld", requested, actual);
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if (actual != requested)
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return MODE_CLOCK_RANGE;
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if (!msm_edp_ctrl_pixel_clock_valid(
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edp->ctrl, mode->clock, NULL, NULL))
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return MODE_CLOCK_RANGE;
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/* Invalidate all modes if color format is not supported */
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if (connector->display_info.bpc > 8)
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return MODE_BAD;
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return MODE_OK;
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}
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static const struct drm_connector_funcs edp_connector_funcs = {
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.detect = edp_connector_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = edp_connector_destroy,
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.reset = drm_atomic_helper_connector_reset,
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.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
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};
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static const struct drm_connector_helper_funcs edp_connector_helper_funcs = {
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.get_modes = edp_connector_get_modes,
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.mode_valid = edp_connector_mode_valid,
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};
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/* initialize connector */
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struct drm_connector *msm_edp_connector_init(struct msm_edp *edp)
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{
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struct drm_connector *connector = NULL;
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struct edp_connector *edp_connector;
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int ret;
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edp_connector = kzalloc(sizeof(*edp_connector), GFP_KERNEL);
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if (!edp_connector)
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return ERR_PTR(-ENOMEM);
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edp_connector->edp = edp;
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connector = &edp_connector->base;
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ret = drm_connector_init(edp->dev, connector, &edp_connector_funcs,
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DRM_MODE_CONNECTOR_eDP);
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if (ret)
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return ERR_PTR(ret);
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drm_connector_helper_add(connector, &edp_connector_helper_funcs);
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/* We don't support HPD, so only poll status until connected. */
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connector->polled = DRM_CONNECTOR_POLL_CONNECT;
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/* Display driver doesn't support interlace now. */
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connector->interlace_allowed = false;
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connector->doublescan_allowed = false;
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drm_connector_attach_encoder(connector, edp->encoder);
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return connector;
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}
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