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cdad39216a
This workaround is specific for a particular panel on Google
chromebook project. When user space daemon enter idle state.
It request adjust brightness to 0, turn backlight_enable signal
off and keep eDP main link active.
On general LCD, this behavior might not be a problem.
But on this panel, its tcon would expect source to execute
full eDP power off sequence after drop backlight_enable signal.
Without eDP power off sequence. Even source try to turn
backlight_enable signal on and restore proper brightness level.
This panel is not able to light on again.
This WA ignored the request from user space daemon to disable
backlight_enable signal and keep it on always. When user space
request kernel to turn eDP display off, kernel driver still
can control backlight_enable signal properly. It would not
impact standard eDP power off sequence.
v2: 1. modify the quirk name and debug messages.
2. unregister backlight.power callback for specific device.
v3: 1. modify debug output messages.
2. use DMI_EXACT_MATCH instead of DMI_MATCH.
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Cooper Chiou <cooper.chiou@intel.com>
Signed-off-by: Lee Shawn C <shawn.c.lee@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210624053932.21037-1-shawn.c.lee@intel.com
214 lines
6.2 KiB
C
214 lines
6.2 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2018 Intel Corporation
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*/
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#include <linux/dmi.h>
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#include "intel_display_types.h"
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#include "intel_quirks.h"
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/*
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* Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
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*/
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static void quirk_ssc_force_disable(struct drm_i915_private *i915)
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{
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i915->quirks |= QUIRK_LVDS_SSC_DISABLE;
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drm_info(&i915->drm, "applying lvds SSC disable quirk\n");
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}
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/*
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* A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
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* brightness value
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*/
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static void quirk_invert_brightness(struct drm_i915_private *i915)
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{
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i915->quirks |= QUIRK_INVERT_BRIGHTNESS;
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drm_info(&i915->drm, "applying inverted panel brightness quirk\n");
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}
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/* Some VBT's incorrectly indicate no backlight is present */
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static void quirk_backlight_present(struct drm_i915_private *i915)
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{
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i915->quirks |= QUIRK_BACKLIGHT_PRESENT;
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drm_info(&i915->drm, "applying backlight present quirk\n");
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}
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/* Toshiba Satellite P50-C-18C requires T12 delay to be min 800ms
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* which is 300 ms greater than eDP spec T12 min.
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*/
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static void quirk_increase_t12_delay(struct drm_i915_private *i915)
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{
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i915->quirks |= QUIRK_INCREASE_T12_DELAY;
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drm_info(&i915->drm, "Applying T12 delay quirk\n");
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}
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/*
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* GeminiLake NUC HDMI outputs require additional off time
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* this allows the onboard retimer to correctly sync to signal
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*/
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static void quirk_increase_ddi_disabled_time(struct drm_i915_private *i915)
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{
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i915->quirks |= QUIRK_INCREASE_DDI_DISABLED_TIME;
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drm_info(&i915->drm, "Applying Increase DDI Disabled quirk\n");
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}
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static void quirk_no_pps_backlight_power_hook(struct drm_i915_private *i915)
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{
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i915->quirks |= QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK;
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drm_info(&i915->drm, "Applying no pps backlight power quirk\n");
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}
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struct intel_quirk {
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int device;
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int subsystem_vendor;
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int subsystem_device;
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void (*hook)(struct drm_i915_private *i915);
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};
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/* For systems that don't have a meaningful PCI subdevice/subvendor ID */
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struct intel_dmi_quirk {
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void (*hook)(struct drm_i915_private *i915);
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const struct dmi_system_id (*dmi_id_list)[];
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};
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static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
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{
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DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
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return 1;
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}
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static int intel_dmi_no_pps_backlight(const struct dmi_system_id *id)
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{
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DRM_INFO("No pps backlight support on %s\n", id->ident);
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return 1;
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}
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static const struct intel_dmi_quirk intel_dmi_quirks[] = {
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{
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.dmi_id_list = &(const struct dmi_system_id[]) {
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{
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.callback = intel_dmi_reverse_brightness,
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.ident = "NCR Corporation",
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.matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, ""),
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},
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},
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{
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.callback = intel_dmi_reverse_brightness,
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.ident = "Thundersoft TST178 tablet",
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/* DMI strings are too generic, also match on BIOS date */
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.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
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DMI_EXACT_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
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DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "To be filled by O.E.M."),
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DMI_EXACT_MATCH(DMI_BIOS_DATE, "04/15/2014"),
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},
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},
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{ } /* terminating entry */
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},
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.hook = quirk_invert_brightness,
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},
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{
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.dmi_id_list = &(const struct dmi_system_id[]) {
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{
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.callback = intel_dmi_no_pps_backlight,
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.ident = "Google Lillipup sku524294",
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.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
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DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
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DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524294"),
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},
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},
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{
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.callback = intel_dmi_no_pps_backlight,
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.ident = "Google Lillipup sku524295",
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.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
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DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
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DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524295"),
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},
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},
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{ }
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},
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.hook = quirk_no_pps_backlight_power_hook,
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},
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};
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static struct intel_quirk intel_quirks[] = {
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/* Lenovo U160 cannot use SSC on LVDS */
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{ 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
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/* Sony Vaio Y cannot use SSC on LVDS */
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{ 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
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/* Acer Aspire 5734Z must invert backlight brightness */
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{ 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
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/* Acer/eMachines G725 */
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{ 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
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/* Acer/eMachines e725 */
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{ 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
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/* Acer/Packard Bell NCL20 */
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{ 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
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/* Acer Aspire 4736Z */
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{ 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
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/* Acer Aspire 5336 */
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{ 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
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/* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
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{ 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
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/* Acer C720 Chromebook (Core i3 4005U) */
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{ 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
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/* Apple Macbook 2,1 (Core 2 T7400) */
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{ 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
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/* Apple Macbook 4,1 */
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{ 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
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/* Toshiba CB35 Chromebook (Celeron 2955U) */
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{ 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
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/* HP Chromebook 14 (Celeron 2955U) */
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{ 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
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/* Dell Chromebook 11 */
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{ 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
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/* Dell Chromebook 11 (2015 version) */
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{ 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
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/* Toshiba Satellite P50-C-18C */
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{ 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay },
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/* GeminiLake NUC */
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{ 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
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{ 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
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/* ASRock ITX*/
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{ 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
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{ 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
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};
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void intel_init_quirks(struct drm_i915_private *i915)
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{
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struct pci_dev *d = to_pci_dev(i915->drm.dev);
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int i;
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for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
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struct intel_quirk *q = &intel_quirks[i];
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if (d->device == q->device &&
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(d->subsystem_vendor == q->subsystem_vendor ||
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q->subsystem_vendor == PCI_ANY_ID) &&
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(d->subsystem_device == q->subsystem_device ||
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q->subsystem_device == PCI_ANY_ID))
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q->hook(i915);
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}
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for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
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if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
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intel_dmi_quirks[i].hook(i915);
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}
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}
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