mirror of https://gitee.com/openkylin/linux.git
557 lines
15 KiB
C
557 lines
15 KiB
C
/*
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* Copyright 2008 Intel Corporation <hong.liu@intel.com>
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* Copyright 2008 Red Hat <mjg@redhat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/acpi.h>
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#include <linux/acpi_io.h>
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#include <acpi/video.h>
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#include <drm/drmP.h>
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#include <drm/i915_drm.h>
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#include "i915_drv.h"
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#include "intel_drv.h"
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#define PCI_ASLE 0xe4
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#define PCI_ASLS 0xfc
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#define OPREGION_HEADER_OFFSET 0
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#define OPREGION_ACPI_OFFSET 0x100
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#define ACPI_CLID 0x01ac /* current lid state indicator */
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#define ACPI_CDCK 0x01b0 /* current docking state indicator */
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#define OPREGION_SWSCI_OFFSET 0x200
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#define OPREGION_ASLE_OFFSET 0x300
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#define OPREGION_VBT_OFFSET 0x400
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#define OPREGION_SIGNATURE "IntelGraphicsMem"
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#define MBOX_ACPI (1<<0)
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#define MBOX_SWSCI (1<<1)
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#define MBOX_ASLE (1<<2)
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struct opregion_header {
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u8 signature[16];
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u32 size;
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u32 opregion_ver;
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u8 bios_ver[32];
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u8 vbios_ver[16];
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u8 driver_ver[16];
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u32 mboxes;
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u8 reserved[164];
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} __attribute__((packed));
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/* OpRegion mailbox #1: public ACPI methods */
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struct opregion_acpi {
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u32 drdy; /* driver readiness */
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u32 csts; /* notification status */
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u32 cevt; /* current event */
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u8 rsvd1[20];
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u32 didl[8]; /* supported display devices ID list */
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u32 cpdl[8]; /* currently presented display list */
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u32 cadl[8]; /* currently active display list */
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u32 nadl[8]; /* next active devices list */
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u32 aslp; /* ASL sleep time-out */
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u32 tidx; /* toggle table index */
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u32 chpd; /* current hotplug enable indicator */
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u32 clid; /* current lid state*/
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u32 cdck; /* current docking state */
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u32 sxsw; /* Sx state resume */
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u32 evts; /* ASL supported events */
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u32 cnot; /* current OS notification */
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u32 nrdy; /* driver status */
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u8 rsvd2[60];
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} __attribute__((packed));
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/* OpRegion mailbox #2: SWSCI */
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struct opregion_swsci {
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u32 scic; /* SWSCI command|status|data */
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u32 parm; /* command parameters */
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u32 dslp; /* driver sleep time-out */
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u8 rsvd[244];
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} __attribute__((packed));
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/* OpRegion mailbox #3: ASLE */
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struct opregion_asle {
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u32 ardy; /* driver readiness */
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u32 aslc; /* ASLE interrupt command */
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u32 tche; /* technology enabled indicator */
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u32 alsi; /* current ALS illuminance reading */
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u32 bclp; /* backlight brightness to set */
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u32 pfit; /* panel fitting state */
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u32 cblv; /* current brightness level */
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u16 bclm[20]; /* backlight level duty cycle mapping table */
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u32 cpfm; /* current panel fitting mode */
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u32 epfm; /* enabled panel fitting modes */
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u8 plut[74]; /* panel LUT and identifier */
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u32 pfmb; /* PWM freq and min brightness */
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u8 rsvd[102];
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} __attribute__((packed));
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/* ASLE irq request bits */
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#define ASLE_SET_ALS_ILLUM (1 << 0)
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#define ASLE_SET_BACKLIGHT (1 << 1)
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#define ASLE_SET_PFIT (1 << 2)
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#define ASLE_SET_PWM_FREQ (1 << 3)
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#define ASLE_REQ_MSK 0xf
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/* response bits of ASLE irq request */
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#define ASLE_ALS_ILLUM_FAILED (1<<10)
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#define ASLE_BACKLIGHT_FAILED (1<<12)
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#define ASLE_PFIT_FAILED (1<<14)
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#define ASLE_PWM_FREQ_FAILED (1<<16)
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/* ASLE backlight brightness to set */
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#define ASLE_BCLP_VALID (1<<31)
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#define ASLE_BCLP_MSK (~(1<<31))
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/* ASLE panel fitting request */
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#define ASLE_PFIT_VALID (1<<31)
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#define ASLE_PFIT_CENTER (1<<0)
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#define ASLE_PFIT_STRETCH_TEXT (1<<1)
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#define ASLE_PFIT_STRETCH_GFX (1<<2)
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/* PWM frequency and minimum brightness */
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#define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
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#define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
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#define ASLE_PFMB_PWM_MASK (0x7ffffe00)
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#define ASLE_PFMB_PWM_VALID (1<<31)
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#define ASLE_CBLV_VALID (1<<31)
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#define ACPI_OTHER_OUTPUT (0<<8)
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#define ACPI_VGA_OUTPUT (1<<8)
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#define ACPI_TV_OUTPUT (2<<8)
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#define ACPI_DIGITAL_OUTPUT (3<<8)
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#define ACPI_LVDS_OUTPUT (4<<8)
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#ifdef CONFIG_ACPI
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static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
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u32 max;
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DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
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if (!(bclp & ASLE_BCLP_VALID))
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return ASLE_BACKLIGHT_FAILED;
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bclp &= ASLE_BCLP_MSK;
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if (bclp > 255)
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return ASLE_BACKLIGHT_FAILED;
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max = intel_panel_get_max_backlight(dev);
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intel_panel_set_backlight(dev, bclp * max / 255);
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iowrite32((bclp*0x64)/0xff | ASLE_CBLV_VALID, &asle->cblv);
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return 0;
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}
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static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi)
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{
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/* alsi is the current ALS reading in lux. 0 indicates below sensor
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range, 0xffff indicates above sensor range. 1-0xfffe are valid */
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return 0;
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}
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static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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if (pfmb & ASLE_PFMB_PWM_VALID) {
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u32 blc_pwm_ctl = I915_READ(BLC_PWM_CTL);
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u32 pwm = pfmb & ASLE_PFMB_PWM_MASK;
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blc_pwm_ctl &= BACKLIGHT_DUTY_CYCLE_MASK;
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pwm = pwm >> 9;
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/* FIXME - what do we do with the PWM? */
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}
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return 0;
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}
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static u32 asle_set_pfit(struct drm_device *dev, u32 pfit)
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{
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/* Panel fitting is currently controlled by the X code, so this is a
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noop until modesetting support works fully */
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if (!(pfit & ASLE_PFIT_VALID))
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return ASLE_PFIT_FAILED;
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return 0;
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}
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void intel_opregion_asle_intr(struct drm_device *dev)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
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u32 asle_stat = 0;
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u32 asle_req;
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if (!asle)
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return;
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asle_req = ioread32(&asle->aslc) & ASLE_REQ_MSK;
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if (!asle_req) {
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DRM_DEBUG_DRIVER("non asle set request??\n");
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return;
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}
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if (asle_req & ASLE_SET_ALS_ILLUM)
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asle_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi));
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if (asle_req & ASLE_SET_BACKLIGHT)
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asle_stat |= asle_set_backlight(dev, ioread32(&asle->bclp));
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if (asle_req & ASLE_SET_PFIT)
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asle_stat |= asle_set_pfit(dev, ioread32(&asle->pfit));
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if (asle_req & ASLE_SET_PWM_FREQ)
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asle_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb));
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iowrite32(asle_stat, &asle->aslc);
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}
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void intel_opregion_gse_intr(struct drm_device *dev)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
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u32 asle_stat = 0;
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u32 asle_req;
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if (!asle)
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return;
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asle_req = ioread32(&asle->aslc) & ASLE_REQ_MSK;
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if (!asle_req) {
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DRM_DEBUG_DRIVER("non asle set request??\n");
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return;
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}
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if (asle_req & ASLE_SET_ALS_ILLUM) {
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DRM_DEBUG_DRIVER("Illum is not supported\n");
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asle_stat |= ASLE_ALS_ILLUM_FAILED;
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}
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if (asle_req & ASLE_SET_BACKLIGHT)
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asle_stat |= asle_set_backlight(dev, ioread32(&asle->bclp));
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if (asle_req & ASLE_SET_PFIT) {
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DRM_DEBUG_DRIVER("Pfit is not supported\n");
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asle_stat |= ASLE_PFIT_FAILED;
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}
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if (asle_req & ASLE_SET_PWM_FREQ) {
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DRM_DEBUG_DRIVER("PWM freq is not supported\n");
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asle_stat |= ASLE_PWM_FREQ_FAILED;
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}
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iowrite32(asle_stat, &asle->aslc);
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}
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#define ASLE_ALS_EN (1<<0)
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#define ASLE_BLC_EN (1<<1)
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#define ASLE_PFIT_EN (1<<2)
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#define ASLE_PFMB_EN (1<<3)
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void intel_opregion_enable_asle(struct drm_device *dev)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
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if (asle) {
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if (IS_MOBILE(dev))
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intel_enable_asle(dev);
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iowrite32(ASLE_ALS_EN | ASLE_BLC_EN | ASLE_PFIT_EN |
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ASLE_PFMB_EN,
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&asle->tche);
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iowrite32(1, &asle->ardy);
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}
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}
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#define ACPI_EV_DISPLAY_SWITCH (1<<0)
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#define ACPI_EV_LID (1<<1)
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#define ACPI_EV_DOCK (1<<2)
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static struct intel_opregion *system_opregion;
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static int intel_opregion_video_event(struct notifier_block *nb,
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unsigned long val, void *data)
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{
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/* The only video events relevant to opregion are 0x80. These indicate
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either a docking event, lid switch or display switch request. In
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Linux, these are handled by the dock, button and video drivers.
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*/
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struct opregion_acpi __iomem *acpi;
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struct acpi_bus_event *event = data;
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int ret = NOTIFY_OK;
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if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
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return NOTIFY_DONE;
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if (!system_opregion)
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return NOTIFY_DONE;
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acpi = system_opregion->acpi;
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if (event->type == 0x80 &&
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(ioread32(&acpi->cevt) & 1) == 0)
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ret = NOTIFY_BAD;
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iowrite32(0, &acpi->csts);
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return ret;
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}
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static struct notifier_block intel_opregion_notifier = {
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.notifier_call = intel_opregion_video_event,
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};
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/*
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* Initialise the DIDL field in opregion. This passes a list of devices to
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* the firmware. Values are defined by section B.4.2 of the ACPI specification
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* (version 3)
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*/
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static void intel_didl_outputs(struct drm_device *dev)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct intel_opregion *opregion = &dev_priv->opregion;
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struct drm_connector *connector;
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acpi_handle handle;
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struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL;
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unsigned long long device_id;
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acpi_status status;
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u32 temp;
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int i = 0;
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handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev);
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if (!handle || acpi_bus_get_device(handle, &acpi_dev))
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return;
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if (acpi_is_video_device(acpi_dev))
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acpi_video_bus = acpi_dev;
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else {
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list_for_each_entry(acpi_cdev, &acpi_dev->children, node) {
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if (acpi_is_video_device(acpi_cdev)) {
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acpi_video_bus = acpi_cdev;
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break;
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}
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}
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}
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if (!acpi_video_bus) {
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pr_warn("No ACPI video bus found\n");
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return;
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}
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list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) {
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if (i >= 8) {
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dev_printk(KERN_ERR, &dev->pdev->dev,
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"More than 8 outputs detected\n");
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return;
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}
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status =
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acpi_evaluate_integer(acpi_cdev->handle, "_ADR",
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NULL, &device_id);
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if (ACPI_SUCCESS(status)) {
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if (!device_id)
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goto blind_set;
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iowrite32((u32)(device_id & 0x0f0f),
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&opregion->acpi->didl[i]);
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i++;
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}
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}
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end:
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/* If fewer than 8 outputs, the list must be null terminated */
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if (i < 8)
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iowrite32(0, &opregion->acpi->didl[i]);
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return;
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blind_set:
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i = 0;
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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int output_type = ACPI_OTHER_OUTPUT;
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if (i >= 8) {
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dev_printk(KERN_ERR, &dev->pdev->dev,
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"More than 8 outputs detected\n");
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return;
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}
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switch (connector->connector_type) {
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case DRM_MODE_CONNECTOR_VGA:
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case DRM_MODE_CONNECTOR_DVIA:
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output_type = ACPI_VGA_OUTPUT;
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break;
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case DRM_MODE_CONNECTOR_Composite:
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case DRM_MODE_CONNECTOR_SVIDEO:
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case DRM_MODE_CONNECTOR_Component:
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case DRM_MODE_CONNECTOR_9PinDIN:
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output_type = ACPI_TV_OUTPUT;
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break;
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case DRM_MODE_CONNECTOR_DVII:
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case DRM_MODE_CONNECTOR_DVID:
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case DRM_MODE_CONNECTOR_DisplayPort:
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case DRM_MODE_CONNECTOR_HDMIA:
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case DRM_MODE_CONNECTOR_HDMIB:
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output_type = ACPI_DIGITAL_OUTPUT;
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break;
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case DRM_MODE_CONNECTOR_LVDS:
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output_type = ACPI_LVDS_OUTPUT;
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break;
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}
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temp = ioread32(&opregion->acpi->didl[i]);
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iowrite32(temp | (1<<31) | output_type | i,
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&opregion->acpi->didl[i]);
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i++;
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}
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goto end;
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}
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static void intel_setup_cadls(struct drm_device *dev)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct intel_opregion *opregion = &dev_priv->opregion;
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int i = 0;
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u32 disp_id;
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/* Initialize the CADL field by duplicating the DIDL values.
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* Technically, this is not always correct as display outputs may exist,
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* but not active. This initialization is necessary for some Clevo
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* laptops that check this field before processing the brightness and
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* display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
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* there are less than eight devices. */
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do {
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disp_id = ioread32(&opregion->acpi->didl[i]);
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iowrite32(disp_id, &opregion->acpi->cadl[i]);
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} while (++i < 8 && disp_id != 0);
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}
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void intel_opregion_init(struct drm_device *dev)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct intel_opregion *opregion = &dev_priv->opregion;
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if (!opregion->header)
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return;
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if (opregion->acpi) {
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if (drm_core_check_feature(dev, DRIVER_MODESET)) {
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intel_didl_outputs(dev);
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intel_setup_cadls(dev);
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}
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/* Notify BIOS we are ready to handle ACPI video ext notifs.
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* Right now, all the events are handled by the ACPI video module.
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* We don't actually need to do anything with them. */
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iowrite32(0, &opregion->acpi->csts);
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iowrite32(1, &opregion->acpi->drdy);
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system_opregion = opregion;
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register_acpi_notifier(&intel_opregion_notifier);
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}
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if (opregion->asle)
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intel_opregion_enable_asle(dev);
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}
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void intel_opregion_fini(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_opregion *opregion = &dev_priv->opregion;
|
|
|
|
if (!opregion->header)
|
|
return;
|
|
|
|
if (opregion->acpi) {
|
|
iowrite32(0, &opregion->acpi->drdy);
|
|
|
|
system_opregion = NULL;
|
|
unregister_acpi_notifier(&intel_opregion_notifier);
|
|
}
|
|
|
|
/* just clear all opregion memory pointers now */
|
|
iounmap(opregion->header);
|
|
opregion->header = NULL;
|
|
opregion->acpi = NULL;
|
|
opregion->swsci = NULL;
|
|
opregion->asle = NULL;
|
|
opregion->vbt = NULL;
|
|
}
|
|
#endif
|
|
|
|
int intel_opregion_setup(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_opregion *opregion = &dev_priv->opregion;
|
|
void __iomem *base;
|
|
u32 asls, mboxes;
|
|
char buf[sizeof(OPREGION_SIGNATURE)];
|
|
int err = 0;
|
|
|
|
pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
|
|
DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
|
|
if (asls == 0) {
|
|
DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
base = acpi_os_ioremap(asls, OPREGION_SIZE);
|
|
if (!base)
|
|
return -ENOMEM;
|
|
|
|
memcpy_fromio(buf, base, sizeof(buf));
|
|
|
|
if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
|
|
DRM_DEBUG_DRIVER("opregion signature mismatch\n");
|
|
err = -EINVAL;
|
|
goto err_out;
|
|
}
|
|
opregion->header = base;
|
|
opregion->vbt = base + OPREGION_VBT_OFFSET;
|
|
|
|
opregion->lid_state = base + ACPI_CLID;
|
|
|
|
mboxes = ioread32(&opregion->header->mboxes);
|
|
if (mboxes & MBOX_ACPI) {
|
|
DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
|
|
opregion->acpi = base + OPREGION_ACPI_OFFSET;
|
|
}
|
|
|
|
if (mboxes & MBOX_SWSCI) {
|
|
DRM_DEBUG_DRIVER("SWSCI supported\n");
|
|
opregion->swsci = base + OPREGION_SWSCI_OFFSET;
|
|
}
|
|
if (mboxes & MBOX_ASLE) {
|
|
DRM_DEBUG_DRIVER("ASLE supported\n");
|
|
opregion->asle = base + OPREGION_ASLE_OFFSET;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_out:
|
|
iounmap(base);
|
|
return err;
|
|
}
|