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![Jani Nikula](/assets/img/avatar_default.png)
Start debug logging about the presence of the new Mailbox #2 for backlight. Actual support is to be added later. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/42fd9cd777c5cc9a8d48db9dd8306924c735918e.1644489329.git.jani.nikula@intel.com
1234 lines
35 KiB
C
1234 lines
35 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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#include <linux/acpi.h>
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#include <linux/dmi.h>
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#include <linux/firmware.h>
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#include <acpi/video.h>
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#include "i915_drv.h"
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#include "intel_acpi.h"
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#include "intel_backlight.h"
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#include "intel_display_types.h"
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#include "intel_opregion.h"
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#include "intel_pci_config.h"
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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_ASLE_EXT_OFFSET 0x1C00
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#define OPREGION_SIGNATURE "IntelGraphicsMem"
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#define MBOX_ACPI BIT(0) /* Mailbox #1 */
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#define MBOX_SWSCI BIT(1) /* Mailbox #2 (obsolete from v2.x) */
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#define MBOX_ASLE BIT(2) /* Mailbox #3 */
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#define MBOX_ASLE_EXT BIT(4) /* Mailbox #5 */
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#define MBOX_BACKLIGHT BIT(5) /* Mailbox #2 (valid from v3.x) */
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struct opregion_header {
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u8 signature[16];
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u32 size;
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struct {
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u8 rsvd;
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u8 revision;
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u8 minor;
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u8 major;
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} __packed over;
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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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u32 driver_model;
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u32 pcon;
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u8 dver[32];
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u8 rsvd[124];
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} __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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u32 did2[7]; /* extended supported display devices ID list */
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u32 cpd2[7]; /* extended attached display devices list */
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u8 rsvd2[4];
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} __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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} __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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u32 cddv; /* color correction default values */
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u32 pcft; /* power conservation features */
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u32 srot; /* supported rotation angles */
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u32 iuer; /* IUER events */
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u64 fdss;
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u32 fdsp;
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u32 stat;
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u64 rvda; /* Physical (2.0) or relative from opregion (2.1+)
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* address of raw VBT data. */
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u32 rvds; /* Size of raw vbt data */
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u8 rsvd[58];
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} __packed;
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/* OpRegion mailbox #5: ASLE ext */
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struct opregion_asle_ext {
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u32 phed; /* Panel Header */
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u8 bddc[256]; /* Panel EDID */
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u8 rsvd[764];
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} __packed;
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/* Driver readiness indicator */
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#define ASLE_ARDY_READY (1 << 0)
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#define ASLE_ARDY_NOT_READY (0 << 0)
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/* ASLE Interrupt Command (ASLC) bits */
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#define ASLC_SET_ALS_ILLUM (1 << 0)
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#define ASLC_SET_BACKLIGHT (1 << 1)
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#define ASLC_SET_PFIT (1 << 2)
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#define ASLC_SET_PWM_FREQ (1 << 3)
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#define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
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#define ASLC_BUTTON_ARRAY (1 << 5)
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#define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
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#define ASLC_DOCKING_INDICATOR (1 << 7)
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#define ASLC_ISCT_STATE_CHANGE (1 << 8)
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#define ASLC_REQ_MSK 0x1ff
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/* response bits */
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#define ASLC_ALS_ILLUM_FAILED (1 << 10)
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#define ASLC_BACKLIGHT_FAILED (1 << 12)
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#define ASLC_PFIT_FAILED (1 << 14)
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#define ASLC_PWM_FREQ_FAILED (1 << 16)
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#define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
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#define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
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#define ASLC_CONVERTIBLE_FAILED (1 << 22)
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#define ASLC_DOCKING_FAILED (1 << 24)
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#define ASLC_ISCT_STATE_FAILED (1 << 26)
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/* Technology enabled indicator */
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#define ASLE_TCHE_ALS_EN (1 << 0)
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#define ASLE_TCHE_BLC_EN (1 << 1)
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#define ASLE_TCHE_PFIT_EN (1 << 2)
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#define ASLE_TCHE_PFMB_EN (1 << 3)
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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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/* IUER */
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#define ASLE_IUER_DOCKING (1 << 7)
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#define ASLE_IUER_CONVERTIBLE (1 << 6)
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#define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
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#define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
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#define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
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#define ASLE_IUER_WINDOWS_BTN (1 << 1)
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#define ASLE_IUER_POWER_BTN (1 << 0)
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#define ASLE_PHED_EDID_VALID_MASK 0x3
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/* Software System Control Interrupt (SWSCI) */
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#define SWSCI_SCIC_INDICATOR (1 << 0)
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#define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
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#define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
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#define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
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#define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
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#define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
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#define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
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#define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
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#define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
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#define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
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#define SWSCI_FUNCTION_CODE(main, sub) \
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((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
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(sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
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/* SWSCI: Get BIOS Data (GBDA) */
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#define SWSCI_GBDA 4
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#define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
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#define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
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#define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
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#define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
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#define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
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#define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
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#define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
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/* SWSCI: System BIOS Callbacks (SBCB) */
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#define SWSCI_SBCB 6
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#define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
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#define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
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#define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
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#define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
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#define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
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#define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
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#define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
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#define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
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#define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
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#define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
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#define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
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#define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
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#define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
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#define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
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#define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
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#define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
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#define MAX_DSLP 1500
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static int check_swsci_function(struct drm_i915_private *i915, u32 function)
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{
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struct opregion_swsci *swsci = i915->opregion.swsci;
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u32 main_function, sub_function;
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if (!swsci)
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return -ENODEV;
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main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
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SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
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sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
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SWSCI_SCIC_SUB_FUNCTION_SHIFT;
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/* Check if we can call the function. See swsci_setup for details. */
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if (main_function == SWSCI_SBCB) {
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if ((i915->opregion.swsci_sbcb_sub_functions &
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(1 << sub_function)) == 0)
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return -EINVAL;
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} else if (main_function == SWSCI_GBDA) {
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if ((i915->opregion.swsci_gbda_sub_functions &
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(1 << sub_function)) == 0)
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return -EINVAL;
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}
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return 0;
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}
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static int swsci(struct drm_i915_private *dev_priv,
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u32 function, u32 parm, u32 *parm_out)
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{
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struct opregion_swsci *swsci = dev_priv->opregion.swsci;
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struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
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u32 scic, dslp;
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u16 swsci_val;
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int ret;
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ret = check_swsci_function(dev_priv, function);
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if (ret)
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return ret;
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/* Driver sleep timeout in ms. */
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dslp = swsci->dslp;
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if (!dslp) {
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/* The spec says 2ms should be the default, but it's too small
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* for some machines. */
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dslp = 50;
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} else if (dslp > MAX_DSLP) {
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/* Hey bios, trust must be earned. */
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DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
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"using %u ms instead\n", dslp, MAX_DSLP);
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dslp = MAX_DSLP;
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}
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/* The spec tells us to do this, but we are the only user... */
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scic = swsci->scic;
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if (scic & SWSCI_SCIC_INDICATOR) {
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drm_dbg(&dev_priv->drm, "SWSCI request already in progress\n");
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return -EBUSY;
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}
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scic = function | SWSCI_SCIC_INDICATOR;
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swsci->parm = parm;
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swsci->scic = scic;
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/* Ensure SCI event is selected and event trigger is cleared. */
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pci_read_config_word(pdev, SWSCI, &swsci_val);
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if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) {
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swsci_val |= SWSCI_SCISEL;
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swsci_val &= ~SWSCI_GSSCIE;
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pci_write_config_word(pdev, SWSCI, swsci_val);
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}
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/* Use event trigger to tell bios to check the mail. */
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swsci_val |= SWSCI_GSSCIE;
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pci_write_config_word(pdev, SWSCI, swsci_val);
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/* Poll for the result. */
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#define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
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if (wait_for(C, dslp)) {
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drm_dbg(&dev_priv->drm, "SWSCI request timed out\n");
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return -ETIMEDOUT;
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}
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scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
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SWSCI_SCIC_EXIT_STATUS_SHIFT;
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/* Note: scic == 0 is an error! */
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if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
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drm_dbg(&dev_priv->drm, "SWSCI request error %u\n", scic);
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return -EIO;
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}
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if (parm_out)
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*parm_out = swsci->parm;
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return 0;
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#undef C
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}
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#define DISPLAY_TYPE_CRT 0
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#define DISPLAY_TYPE_TV 1
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#define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
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#define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
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int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
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bool enable)
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{
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struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
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u32 parm = 0;
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u32 type = 0;
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u32 port;
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int ret;
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/* don't care about old stuff for now */
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if (!HAS_DDI(dev_priv))
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return 0;
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/* Avoid port out of bounds checks if SWSCI isn't there. */
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ret = check_swsci_function(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE);
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if (ret)
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return ret;
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if (intel_encoder->type == INTEL_OUTPUT_DSI)
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port = 0;
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else
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port = intel_encoder->port;
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if (port == PORT_E) {
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port = 0;
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} else {
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parm |= 1 << port;
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port++;
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}
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/*
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* The port numbering and mapping here is bizarre. The now-obsolete
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* swsci spec supports ports numbered [0..4]. Port E is handled as a
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* special case, but port F and beyond are not. The functionality is
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* supposed to be obsolete for new platforms. Just bail out if the port
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* number is out of bounds after mapping.
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*/
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if (port > 4) {
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drm_dbg_kms(&dev_priv->drm,
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"[ENCODER:%d:%s] port %c (index %u) out of bounds for display power state notification\n",
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intel_encoder->base.base.id, intel_encoder->base.name,
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port_name(intel_encoder->port), port);
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return -EINVAL;
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}
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if (!enable)
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parm |= 4 << 8;
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switch (intel_encoder->type) {
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case INTEL_OUTPUT_ANALOG:
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type = DISPLAY_TYPE_CRT;
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break;
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case INTEL_OUTPUT_DDI:
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case INTEL_OUTPUT_DP:
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case INTEL_OUTPUT_HDMI:
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case INTEL_OUTPUT_DP_MST:
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type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
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break;
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case INTEL_OUTPUT_EDP:
|
|
case INTEL_OUTPUT_DSI:
|
|
type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
|
|
break;
|
|
default:
|
|
drm_WARN_ONCE(&dev_priv->drm, 1,
|
|
"unsupported intel_encoder type %d\n",
|
|
intel_encoder->type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
parm |= type << (16 + port * 3);
|
|
|
|
return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
|
|
}
|
|
|
|
static const struct {
|
|
pci_power_t pci_power_state;
|
|
u32 parm;
|
|
} power_state_map[] = {
|
|
{ PCI_D0, 0x00 },
|
|
{ PCI_D1, 0x01 },
|
|
{ PCI_D2, 0x02 },
|
|
{ PCI_D3hot, 0x04 },
|
|
{ PCI_D3cold, 0x04 },
|
|
};
|
|
|
|
int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
|
|
pci_power_t state)
|
|
{
|
|
int i;
|
|
|
|
if (!HAS_DDI(dev_priv))
|
|
return 0;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
|
|
if (state == power_state_map[i].pci_power_state)
|
|
return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE,
|
|
power_state_map[i].parm, NULL);
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp)
|
|
{
|
|
struct intel_connector *connector;
|
|
struct drm_connector_list_iter conn_iter;
|
|
struct opregion_asle *asle = dev_priv->opregion.asle;
|
|
struct drm_device *dev = &dev_priv->drm;
|
|
|
|
drm_dbg(&dev_priv->drm, "bclp = 0x%08x\n", bclp);
|
|
|
|
if (acpi_video_get_backlight_type() == acpi_backlight_native) {
|
|
drm_dbg_kms(&dev_priv->drm,
|
|
"opregion backlight request ignored\n");
|
|
return 0;
|
|
}
|
|
|
|
if (!(bclp & ASLE_BCLP_VALID))
|
|
return ASLC_BACKLIGHT_FAILED;
|
|
|
|
bclp &= ASLE_BCLP_MSK;
|
|
if (bclp > 255)
|
|
return ASLC_BACKLIGHT_FAILED;
|
|
|
|
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
|
|
|
|
/*
|
|
* Update backlight on all connectors that support backlight (usually
|
|
* only one).
|
|
*/
|
|
drm_dbg_kms(&dev_priv->drm, "updating opregion backlight %d/255\n",
|
|
bclp);
|
|
drm_connector_list_iter_begin(dev, &conn_iter);
|
|
for_each_intel_connector_iter(connector, &conn_iter)
|
|
intel_backlight_set_acpi(connector->base.state, bclp, 255);
|
|
drm_connector_list_iter_end(&conn_iter);
|
|
asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
|
|
|
|
drm_modeset_unlock(&dev->mode_config.connection_mutex);
|
|
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi)
|
|
{
|
|
/* alsi is the current ALS reading in lux. 0 indicates below sensor
|
|
range, 0xffff indicates above sensor range. 1-0xfffe are valid */
|
|
drm_dbg(&dev_priv->drm, "Illum is not supported\n");
|
|
return ASLC_ALS_ILLUM_FAILED;
|
|
}
|
|
|
|
static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb)
|
|
{
|
|
drm_dbg(&dev_priv->drm, "PWM freq is not supported\n");
|
|
return ASLC_PWM_FREQ_FAILED;
|
|
}
|
|
|
|
static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit)
|
|
{
|
|
/* Panel fitting is currently controlled by the X code, so this is a
|
|
noop until modesetting support works fully */
|
|
drm_dbg(&dev_priv->drm, "Pfit is not supported\n");
|
|
return ASLC_PFIT_FAILED;
|
|
}
|
|
|
|
static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot)
|
|
{
|
|
drm_dbg(&dev_priv->drm, "SROT is not supported\n");
|
|
return ASLC_ROTATION_ANGLES_FAILED;
|
|
}
|
|
|
|
static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer)
|
|
{
|
|
if (!iuer)
|
|
drm_dbg(&dev_priv->drm,
|
|
"Button array event is not supported (nothing)\n");
|
|
if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
|
|
drm_dbg(&dev_priv->drm,
|
|
"Button array event is not supported (rotation lock)\n");
|
|
if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
|
|
drm_dbg(&dev_priv->drm,
|
|
"Button array event is not supported (volume down)\n");
|
|
if (iuer & ASLE_IUER_VOLUME_UP_BTN)
|
|
drm_dbg(&dev_priv->drm,
|
|
"Button array event is not supported (volume up)\n");
|
|
if (iuer & ASLE_IUER_WINDOWS_BTN)
|
|
drm_dbg(&dev_priv->drm,
|
|
"Button array event is not supported (windows)\n");
|
|
if (iuer & ASLE_IUER_POWER_BTN)
|
|
drm_dbg(&dev_priv->drm,
|
|
"Button array event is not supported (power)\n");
|
|
|
|
return ASLC_BUTTON_ARRAY_FAILED;
|
|
}
|
|
|
|
static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer)
|
|
{
|
|
if (iuer & ASLE_IUER_CONVERTIBLE)
|
|
drm_dbg(&dev_priv->drm,
|
|
"Convertible is not supported (clamshell)\n");
|
|
else
|
|
drm_dbg(&dev_priv->drm,
|
|
"Convertible is not supported (slate)\n");
|
|
|
|
return ASLC_CONVERTIBLE_FAILED;
|
|
}
|
|
|
|
static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer)
|
|
{
|
|
if (iuer & ASLE_IUER_DOCKING)
|
|
drm_dbg(&dev_priv->drm, "Docking is not supported (docked)\n");
|
|
else
|
|
drm_dbg(&dev_priv->drm,
|
|
"Docking is not supported (undocked)\n");
|
|
|
|
return ASLC_DOCKING_FAILED;
|
|
}
|
|
|
|
static u32 asle_isct_state(struct drm_i915_private *dev_priv)
|
|
{
|
|
drm_dbg(&dev_priv->drm, "ISCT is not supported\n");
|
|
return ASLC_ISCT_STATE_FAILED;
|
|
}
|
|
|
|
static void asle_work(struct work_struct *work)
|
|
{
|
|
struct intel_opregion *opregion =
|
|
container_of(work, struct intel_opregion, asle_work);
|
|
struct drm_i915_private *dev_priv =
|
|
container_of(opregion, struct drm_i915_private, opregion);
|
|
struct opregion_asle *asle = dev_priv->opregion.asle;
|
|
u32 aslc_stat = 0;
|
|
u32 aslc_req;
|
|
|
|
if (!asle)
|
|
return;
|
|
|
|
aslc_req = asle->aslc;
|
|
|
|
if (!(aslc_req & ASLC_REQ_MSK)) {
|
|
drm_dbg(&dev_priv->drm,
|
|
"No request on ASLC interrupt 0x%08x\n", aslc_req);
|
|
return;
|
|
}
|
|
|
|
if (aslc_req & ASLC_SET_ALS_ILLUM)
|
|
aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi);
|
|
|
|
if (aslc_req & ASLC_SET_BACKLIGHT)
|
|
aslc_stat |= asle_set_backlight(dev_priv, asle->bclp);
|
|
|
|
if (aslc_req & ASLC_SET_PFIT)
|
|
aslc_stat |= asle_set_pfit(dev_priv, asle->pfit);
|
|
|
|
if (aslc_req & ASLC_SET_PWM_FREQ)
|
|
aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb);
|
|
|
|
if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
|
|
aslc_stat |= asle_set_supported_rotation_angles(dev_priv,
|
|
asle->srot);
|
|
|
|
if (aslc_req & ASLC_BUTTON_ARRAY)
|
|
aslc_stat |= asle_set_button_array(dev_priv, asle->iuer);
|
|
|
|
if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
|
|
aslc_stat |= asle_set_convertible(dev_priv, asle->iuer);
|
|
|
|
if (aslc_req & ASLC_DOCKING_INDICATOR)
|
|
aslc_stat |= asle_set_docking(dev_priv, asle->iuer);
|
|
|
|
if (aslc_req & ASLC_ISCT_STATE_CHANGE)
|
|
aslc_stat |= asle_isct_state(dev_priv);
|
|
|
|
asle->aslc = aslc_stat;
|
|
}
|
|
|
|
void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (dev_priv->opregion.asle)
|
|
schedule_work(&dev_priv->opregion.asle_work);
|
|
}
|
|
|
|
#define ACPI_EV_DISPLAY_SWITCH (1<<0)
|
|
#define ACPI_EV_LID (1<<1)
|
|
#define ACPI_EV_DOCK (1<<2)
|
|
|
|
/*
|
|
* The only video events relevant to opregion are 0x80. These indicate either a
|
|
* docking event, lid switch or display switch request. In Linux, these are
|
|
* handled by the dock, button and video drivers.
|
|
*/
|
|
static int intel_opregion_video_event(struct notifier_block *nb,
|
|
unsigned long val, void *data)
|
|
{
|
|
struct intel_opregion *opregion = container_of(nb, struct intel_opregion,
|
|
acpi_notifier);
|
|
struct acpi_bus_event *event = data;
|
|
struct opregion_acpi *acpi;
|
|
int ret = NOTIFY_OK;
|
|
|
|
if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
|
|
return NOTIFY_DONE;
|
|
|
|
acpi = opregion->acpi;
|
|
|
|
if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
|
|
ret = NOTIFY_BAD;
|
|
|
|
acpi->csts = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Initialise the DIDL field in opregion. This passes a list of devices to
|
|
* the firmware. Values are defined by section B.4.2 of the ACPI specification
|
|
* (version 3)
|
|
*/
|
|
|
|
static void set_did(struct intel_opregion *opregion, int i, u32 val)
|
|
{
|
|
if (i < ARRAY_SIZE(opregion->acpi->didl)) {
|
|
opregion->acpi->didl[i] = val;
|
|
} else {
|
|
i -= ARRAY_SIZE(opregion->acpi->didl);
|
|
|
|
if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
|
|
return;
|
|
|
|
opregion->acpi->did2[i] = val;
|
|
}
|
|
}
|
|
|
|
static void intel_didl_outputs(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_opregion *opregion = &dev_priv->opregion;
|
|
struct intel_connector *connector;
|
|
struct drm_connector_list_iter conn_iter;
|
|
int i = 0, max_outputs;
|
|
|
|
/*
|
|
* In theory, did2, the extended didl, gets added at opregion version
|
|
* 3.0. In practice, however, we're supposed to set it for earlier
|
|
* versions as well, since a BIOS that doesn't understand did2 should
|
|
* not look at it anyway. Use a variable so we can tweak this if a need
|
|
* arises later.
|
|
*/
|
|
max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
|
|
ARRAY_SIZE(opregion->acpi->did2);
|
|
|
|
intel_acpi_device_id_update(dev_priv);
|
|
|
|
drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
|
|
for_each_intel_connector_iter(connector, &conn_iter) {
|
|
if (i < max_outputs)
|
|
set_did(opregion, i, connector->acpi_device_id);
|
|
i++;
|
|
}
|
|
drm_connector_list_iter_end(&conn_iter);
|
|
|
|
drm_dbg_kms(&dev_priv->drm, "%d outputs detected\n", i);
|
|
|
|
if (i > max_outputs)
|
|
drm_err(&dev_priv->drm,
|
|
"More than %d outputs in connector list\n",
|
|
max_outputs);
|
|
|
|
/* If fewer than max outputs, the list must be null terminated */
|
|
if (i < max_outputs)
|
|
set_did(opregion, i, 0);
|
|
}
|
|
|
|
static void intel_setup_cadls(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_opregion *opregion = &dev_priv->opregion;
|
|
struct intel_connector *connector;
|
|
struct drm_connector_list_iter conn_iter;
|
|
int i = 0;
|
|
|
|
/*
|
|
* Initialize the CADL field from the connector device ids. This is
|
|
* essentially the same as copying from the DIDL. Technically, this is
|
|
* not always correct as display outputs may exist, but not active. This
|
|
* initialization is necessary for some Clevo laptops that check this
|
|
* field before processing the brightness and display switching hotkeys.
|
|
*
|
|
* Note that internal panels should be at the front of the connector
|
|
* list already, ensuring they're not left out.
|
|
*/
|
|
drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
|
|
for_each_intel_connector_iter(connector, &conn_iter) {
|
|
if (i >= ARRAY_SIZE(opregion->acpi->cadl))
|
|
break;
|
|
opregion->acpi->cadl[i++] = connector->acpi_device_id;
|
|
}
|
|
drm_connector_list_iter_end(&conn_iter);
|
|
|
|
/* If fewer than 8 active devices, the list must be null terminated */
|
|
if (i < ARRAY_SIZE(opregion->acpi->cadl))
|
|
opregion->acpi->cadl[i] = 0;
|
|
}
|
|
|
|
static void swsci_setup(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_opregion *opregion = &dev_priv->opregion;
|
|
bool requested_callbacks = false;
|
|
u32 tmp;
|
|
|
|
/* Sub-function code 0 is okay, let's allow them. */
|
|
opregion->swsci_gbda_sub_functions = 1;
|
|
opregion->swsci_sbcb_sub_functions = 1;
|
|
|
|
/* We use GBDA to ask for supported GBDA calls. */
|
|
if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
|
|
/* make the bits match the sub-function codes */
|
|
tmp <<= 1;
|
|
opregion->swsci_gbda_sub_functions |= tmp;
|
|
}
|
|
|
|
/*
|
|
* We also use GBDA to ask for _requested_ SBCB callbacks. The driver
|
|
* must not call interfaces that are not specifically requested by the
|
|
* bios.
|
|
*/
|
|
if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
|
|
/* here, the bits already match sub-function codes */
|
|
opregion->swsci_sbcb_sub_functions |= tmp;
|
|
requested_callbacks = true;
|
|
}
|
|
|
|
/*
|
|
* But we use SBCB to ask for _supported_ SBCB calls. This does not mean
|
|
* the callback is _requested_. But we still can't call interfaces that
|
|
* are not requested.
|
|
*/
|
|
if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
|
|
/* make the bits match the sub-function codes */
|
|
u32 low = tmp & 0x7ff;
|
|
u32 high = tmp & ~0xfff; /* bit 11 is reserved */
|
|
tmp = (high << 4) | (low << 1) | 1;
|
|
|
|
/* best guess what to do with supported wrt requested */
|
|
if (requested_callbacks) {
|
|
u32 req = opregion->swsci_sbcb_sub_functions;
|
|
if ((req & tmp) != req)
|
|
drm_dbg(&dev_priv->drm,
|
|
"SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n",
|
|
req, tmp);
|
|
/* XXX: for now, trust the requested callbacks */
|
|
/* opregion->swsci_sbcb_sub_functions &= tmp; */
|
|
} else {
|
|
opregion->swsci_sbcb_sub_functions |= tmp;
|
|
}
|
|
}
|
|
|
|
drm_dbg(&dev_priv->drm,
|
|
"SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
|
|
opregion->swsci_gbda_sub_functions,
|
|
opregion->swsci_sbcb_sub_functions);
|
|
}
|
|
|
|
static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
|
|
{
|
|
DRM_DEBUG_KMS("Falling back to manually reading VBT from "
|
|
"VBIOS ROM for %s\n", id->ident);
|
|
return 1;
|
|
}
|
|
|
|
static const struct dmi_system_id intel_no_opregion_vbt[] = {
|
|
{
|
|
.callback = intel_no_opregion_vbt_callback,
|
|
.ident = "ThinkCentre A57",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
|
|
},
|
|
},
|
|
{ }
|
|
};
|
|
|
|
static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_opregion *opregion = &dev_priv->opregion;
|
|
const struct firmware *fw = NULL;
|
|
const char *name = dev_priv->params.vbt_firmware;
|
|
int ret;
|
|
|
|
if (!name || !*name)
|
|
return -ENOENT;
|
|
|
|
ret = request_firmware(&fw, name, dev_priv->drm.dev);
|
|
if (ret) {
|
|
drm_err(&dev_priv->drm,
|
|
"Requesting VBT firmware \"%s\" failed (%d)\n",
|
|
name, ret);
|
|
return ret;
|
|
}
|
|
|
|
if (intel_bios_is_valid_vbt(fw->data, fw->size)) {
|
|
opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL);
|
|
if (opregion->vbt_firmware) {
|
|
drm_dbg_kms(&dev_priv->drm,
|
|
"Found valid VBT firmware \"%s\"\n", name);
|
|
opregion->vbt = opregion->vbt_firmware;
|
|
opregion->vbt_size = fw->size;
|
|
ret = 0;
|
|
} else {
|
|
ret = -ENOMEM;
|
|
}
|
|
} else {
|
|
drm_dbg_kms(&dev_priv->drm, "Invalid VBT firmware \"%s\"\n",
|
|
name);
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
release_firmware(fw);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int intel_opregion_setup(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_opregion *opregion = &dev_priv->opregion;
|
|
struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
|
|
u32 asls, mboxes;
|
|
char buf[sizeof(OPREGION_SIGNATURE)];
|
|
int err = 0;
|
|
void *base;
|
|
const void *vbt;
|
|
u32 vbt_size;
|
|
|
|
BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
|
|
BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
|
|
BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
|
|
BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
|
|
BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
|
|
|
|
pci_read_config_dword(pdev, ASLS, &asls);
|
|
drm_dbg(&dev_priv->drm, "graphic opregion physical addr: 0x%x\n",
|
|
asls);
|
|
if (asls == 0) {
|
|
drm_dbg(&dev_priv->drm, "ACPI OpRegion not supported!\n");
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
INIT_WORK(&opregion->asle_work, asle_work);
|
|
|
|
base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
|
|
if (!base)
|
|
return -ENOMEM;
|
|
|
|
memcpy(buf, base, sizeof(buf));
|
|
|
|
if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
|
|
drm_dbg(&dev_priv->drm, "opregion signature mismatch\n");
|
|
err = -EINVAL;
|
|
goto err_out;
|
|
}
|
|
opregion->header = base;
|
|
opregion->lid_state = base + ACPI_CLID;
|
|
|
|
drm_dbg(&dev_priv->drm, "ACPI OpRegion version %u.%u.%u\n",
|
|
opregion->header->over.major,
|
|
opregion->header->over.minor,
|
|
opregion->header->over.revision);
|
|
|
|
mboxes = opregion->header->mboxes;
|
|
if (mboxes & MBOX_ACPI) {
|
|
drm_dbg(&dev_priv->drm, "Public ACPI methods supported\n");
|
|
opregion->acpi = base + OPREGION_ACPI_OFFSET;
|
|
/*
|
|
* Indicate we handle monitor hotplug events ourselves so we do
|
|
* not need ACPI notifications for them. Disabling these avoids
|
|
* triggering the AML code doing the notifation, which may be
|
|
* broken as Windows also seems to disable these.
|
|
*/
|
|
opregion->acpi->chpd = 1;
|
|
}
|
|
|
|
if (mboxes & MBOX_SWSCI) {
|
|
u8 major = opregion->header->over.major;
|
|
|
|
if (major >= 3) {
|
|
drm_err(&dev_priv->drm, "SWSCI Mailbox #2 present for opregion v3.x, ignoring\n");
|
|
} else {
|
|
if (major >= 2)
|
|
drm_dbg(&dev_priv->drm, "SWSCI Mailbox #2 present for opregion v2.x\n");
|
|
drm_dbg(&dev_priv->drm, "SWSCI supported\n");
|
|
opregion->swsci = base + OPREGION_SWSCI_OFFSET;
|
|
swsci_setup(dev_priv);
|
|
}
|
|
}
|
|
|
|
if (mboxes & MBOX_ASLE) {
|
|
drm_dbg(&dev_priv->drm, "ASLE supported\n");
|
|
opregion->asle = base + OPREGION_ASLE_OFFSET;
|
|
|
|
opregion->asle->ardy = ASLE_ARDY_NOT_READY;
|
|
}
|
|
|
|
if (mboxes & MBOX_ASLE_EXT) {
|
|
drm_dbg(&dev_priv->drm, "ASLE extension supported\n");
|
|
opregion->asle_ext = base + OPREGION_ASLE_EXT_OFFSET;
|
|
}
|
|
|
|
if (mboxes & MBOX_BACKLIGHT) {
|
|
drm_dbg(&dev_priv->drm, "Mailbox #2 for backlight present\n");
|
|
}
|
|
|
|
if (intel_load_vbt_firmware(dev_priv) == 0)
|
|
goto out;
|
|
|
|
if (dmi_check_system(intel_no_opregion_vbt))
|
|
goto out;
|
|
|
|
if (opregion->header->over.major >= 2 && opregion->asle &&
|
|
opregion->asle->rvda && opregion->asle->rvds) {
|
|
resource_size_t rvda = opregion->asle->rvda;
|
|
|
|
/*
|
|
* opregion 2.0: rvda is the physical VBT address.
|
|
*
|
|
* opregion 2.1+: rvda is unsigned, relative offset from
|
|
* opregion base, and should never point within opregion.
|
|
*/
|
|
if (opregion->header->over.major > 2 ||
|
|
opregion->header->over.minor >= 1) {
|
|
drm_WARN_ON(&dev_priv->drm, rvda < OPREGION_SIZE);
|
|
|
|
rvda += asls;
|
|
}
|
|
|
|
opregion->rvda = memremap(rvda, opregion->asle->rvds,
|
|
MEMREMAP_WB);
|
|
|
|
vbt = opregion->rvda;
|
|
vbt_size = opregion->asle->rvds;
|
|
if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
|
|
drm_dbg_kms(&dev_priv->drm,
|
|
"Found valid VBT in ACPI OpRegion (RVDA)\n");
|
|
opregion->vbt = vbt;
|
|
opregion->vbt_size = vbt_size;
|
|
goto out;
|
|
} else {
|
|
drm_dbg_kms(&dev_priv->drm,
|
|
"Invalid VBT in ACPI OpRegion (RVDA)\n");
|
|
memunmap(opregion->rvda);
|
|
opregion->rvda = NULL;
|
|
}
|
|
}
|
|
|
|
vbt = base + OPREGION_VBT_OFFSET;
|
|
/*
|
|
* The VBT specification says that if the ASLE ext mailbox is not used
|
|
* its area is reserved, but on some CHT boards the VBT extends into the
|
|
* ASLE ext area. Allow this even though it is against the spec, so we
|
|
* do not end up rejecting the VBT on those boards (and end up not
|
|
* finding the LCD panel because of this).
|
|
*/
|
|
vbt_size = (mboxes & MBOX_ASLE_EXT) ?
|
|
OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE;
|
|
vbt_size -= OPREGION_VBT_OFFSET;
|
|
if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
|
|
drm_dbg_kms(&dev_priv->drm,
|
|
"Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
|
|
opregion->vbt = vbt;
|
|
opregion->vbt_size = vbt_size;
|
|
} else {
|
|
drm_dbg_kms(&dev_priv->drm,
|
|
"Invalid VBT in ACPI OpRegion (Mailbox #4)\n");
|
|
}
|
|
|
|
out:
|
|
return 0;
|
|
|
|
err_out:
|
|
memunmap(base);
|
|
return err;
|
|
}
|
|
|
|
static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id)
|
|
{
|
|
DRM_INFO("Using panel type from OpRegion on %s\n", id->ident);
|
|
return 1;
|
|
}
|
|
|
|
static const struct dmi_system_id intel_use_opregion_panel_type[] = {
|
|
{
|
|
.callback = intel_use_opregion_panel_type_callback,
|
|
.ident = "Conrac GmbH IX45GM2",
|
|
.matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"),
|
|
},
|
|
},
|
|
{ }
|
|
};
|
|
|
|
int
|
|
intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 panel_details;
|
|
int ret;
|
|
|
|
ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = (panel_details >> 8) & 0xff;
|
|
if (ret > 0x10) {
|
|
drm_dbg_kms(&dev_priv->drm,
|
|
"Invalid OpRegion panel type 0x%x\n", ret);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* fall back to VBT panel type? */
|
|
if (ret == 0x0) {
|
|
drm_dbg_kms(&dev_priv->drm, "No panel type in OpRegion\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* So far we know that some machined must use it, others must not use it.
|
|
* There doesn't seem to be any way to determine which way to go, except
|
|
* via a quirk list :(
|
|
*/
|
|
if (!dmi_check_system(intel_use_opregion_panel_type)) {
|
|
drm_dbg_kms(&dev_priv->drm,
|
|
"Ignoring OpRegion panel type (%d)\n", ret - 1);
|
|
return -ENODEV;
|
|
}
|
|
|
|
return ret - 1;
|
|
}
|
|
|
|
/**
|
|
* intel_opregion_get_edid - Fetch EDID from ACPI OpRegion mailbox #5
|
|
* @intel_connector: eDP connector
|
|
*
|
|
* This reads the ACPI Opregion mailbox #5 to extract the EDID that is passed
|
|
* to it.
|
|
*
|
|
* Returns:
|
|
* The EDID in the OpRegion, or NULL if there is none or it's invalid.
|
|
*
|
|
*/
|
|
struct edid *intel_opregion_get_edid(struct intel_connector *intel_connector)
|
|
{
|
|
struct drm_connector *connector = &intel_connector->base;
|
|
struct drm_i915_private *i915 = to_i915(connector->dev);
|
|
struct intel_opregion *opregion = &i915->opregion;
|
|
const void *in_edid;
|
|
const struct edid *edid;
|
|
struct edid *new_edid;
|
|
int len;
|
|
|
|
if (!opregion->asle_ext)
|
|
return NULL;
|
|
|
|
in_edid = opregion->asle_ext->bddc;
|
|
|
|
/* Validity corresponds to number of 128-byte blocks */
|
|
len = (opregion->asle_ext->phed & ASLE_PHED_EDID_VALID_MASK) * 128;
|
|
if (!len || !memchr_inv(in_edid, 0, len))
|
|
return NULL;
|
|
|
|
edid = in_edid;
|
|
|
|
if (len < EDID_LENGTH * (1 + edid->extensions)) {
|
|
drm_dbg_kms(&i915->drm, "Invalid EDID in ACPI OpRegion (Mailbox #5): too short\n");
|
|
return NULL;
|
|
}
|
|
new_edid = drm_edid_duplicate(edid);
|
|
if (!new_edid)
|
|
return NULL;
|
|
if (!drm_edid_is_valid(new_edid)) {
|
|
kfree(new_edid);
|
|
drm_dbg_kms(&i915->drm, "Invalid EDID in ACPI OpRegion (Mailbox #5)\n");
|
|
return NULL;
|
|
}
|
|
return new_edid;
|
|
}
|
|
|
|
void intel_opregion_register(struct drm_i915_private *i915)
|
|
{
|
|
struct intel_opregion *opregion = &i915->opregion;
|
|
|
|
if (!opregion->header)
|
|
return;
|
|
|
|
if (opregion->acpi) {
|
|
opregion->acpi_notifier.notifier_call =
|
|
intel_opregion_video_event;
|
|
register_acpi_notifier(&opregion->acpi_notifier);
|
|
}
|
|
|
|
intel_opregion_resume(i915);
|
|
}
|
|
|
|
void intel_opregion_resume(struct drm_i915_private *i915)
|
|
{
|
|
struct intel_opregion *opregion = &i915->opregion;
|
|
|
|
if (!opregion->header)
|
|
return;
|
|
|
|
if (opregion->acpi) {
|
|
intel_didl_outputs(i915);
|
|
intel_setup_cadls(i915);
|
|
|
|
/*
|
|
* Notify BIOS we are ready to handle ACPI video ext notifs.
|
|
* Right now, all the events are handled by the ACPI video
|
|
* module. We don't actually need to do anything with them.
|
|
*/
|
|
opregion->acpi->csts = 0;
|
|
opregion->acpi->drdy = 1;
|
|
}
|
|
|
|
if (opregion->asle) {
|
|
opregion->asle->tche = ASLE_TCHE_BLC_EN;
|
|
opregion->asle->ardy = ASLE_ARDY_READY;
|
|
}
|
|
|
|
/* Some platforms abuse the _DSM to enable MUX */
|
|
intel_dsm_get_bios_data_funcs_supported(i915);
|
|
|
|
intel_opregion_notify_adapter(i915, PCI_D0);
|
|
}
|
|
|
|
void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state)
|
|
{
|
|
struct intel_opregion *opregion = &i915->opregion;
|
|
|
|
if (!opregion->header)
|
|
return;
|
|
|
|
intel_opregion_notify_adapter(i915, state);
|
|
|
|
if (opregion->asle)
|
|
opregion->asle->ardy = ASLE_ARDY_NOT_READY;
|
|
|
|
cancel_work_sync(&i915->opregion.asle_work);
|
|
|
|
if (opregion->acpi)
|
|
opregion->acpi->drdy = 0;
|
|
}
|
|
|
|
void intel_opregion_unregister(struct drm_i915_private *i915)
|
|
{
|
|
struct intel_opregion *opregion = &i915->opregion;
|
|
|
|
intel_opregion_suspend(i915, PCI_D1);
|
|
|
|
if (!opregion->header)
|
|
return;
|
|
|
|
if (opregion->acpi_notifier.notifier_call) {
|
|
unregister_acpi_notifier(&opregion->acpi_notifier);
|
|
opregion->acpi_notifier.notifier_call = NULL;
|
|
}
|
|
|
|
/* just clear all opregion memory pointers now */
|
|
memunmap(opregion->header);
|
|
if (opregion->rvda) {
|
|
memunmap(opregion->rvda);
|
|
opregion->rvda = NULL;
|
|
}
|
|
if (opregion->vbt_firmware) {
|
|
kfree(opregion->vbt_firmware);
|
|
opregion->vbt_firmware = NULL;
|
|
}
|
|
opregion->header = NULL;
|
|
opregion->acpi = NULL;
|
|
opregion->swsci = NULL;
|
|
opregion->asle = NULL;
|
|
opregion->asle_ext = NULL;
|
|
opregion->vbt = NULL;
|
|
opregion->lid_state = NULL;
|
|
}
|