From eb794e3c6bf0890bc1039baa6bbf06e922cfa9a3 Mon Sep 17 00:00:00 2001 From: Binbin Zhou Date: Thu, 28 Oct 2021 21:44:32 +0800 Subject: ACPI: EC: Use ec_no_wakeup on HP ZHAN 66 Pro EC interrupts constantly wake up system from s2idle, so set ec_no_wakeup by default to keep the system in s2idle and reduce energy consumption. Signed-off-by: Binbin Zhou [ rjw: Changelog and subject edits ] Signed-off-by: Rafael J. Wysocki --- drivers/acpi/ec.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/acpi') diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index e629e891d1bb..7c32da8f51ed 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -2152,6 +2152,13 @@ static const struct dmi_system_id acpi_ec_no_wakeup[] = { DMI_MATCH(DMI_PRODUCT_FAMILY, "ThinkPad X1 Yoga 3rd"), }, }, + { + .ident = "HP ZHAN 66 Pro", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "HP"), + DMI_MATCH(DMI_PRODUCT_FAMILY, "103C_5336AN HP ZHAN 66 Pro"), + }, + }, { }, }; -- cgit From 69cace6e187c44d8d51d35dcce7c399a34e0f8d6 Mon Sep 17 00:00:00 2001 From: wangzhitong Date: Wed, 3 Nov 2021 13:51:19 +0800 Subject: ACPI: EC: Remove initialization of static variables to false Remove the initialization of two static variables to false which is pointless. Signed-off-by: wangzhitong [ rjw: Subject and changelog ] Signed-off-by: Rafael J. Wysocki --- drivers/acpi/ec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/acpi') diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 7c32da8f51ed..a6366d3f0c78 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -133,7 +133,7 @@ static unsigned int ec_storm_threshold __read_mostly = 8; module_param(ec_storm_threshold, uint, 0644); MODULE_PARM_DESC(ec_storm_threshold, "Maxim false GPE numbers not considered as GPE storm"); -static bool ec_freeze_events __read_mostly = false; +static bool ec_freeze_events __read_mostly; module_param(ec_freeze_events, bool, 0644); MODULE_PARM_DESC(ec_freeze_events, "Disabling event handling during suspend/resume"); @@ -177,7 +177,7 @@ struct acpi_ec *first_ec; EXPORT_SYMBOL(first_ec); static struct acpi_ec *boot_ec; -static bool boot_ec_is_ecdt = false; +static bool boot_ec_is_ecdt; static struct workqueue_struct *ec_wq; static struct workqueue_struct *ec_query_wq; -- cgit From 009a789443fe4c8e6b1ecb7c16b4865c026184cd Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sun, 31 Oct 2021 16:31:35 +0100 Subject: ACPI: PMIC: Fix intel_pmic_regs_handler() read accesses The handling of PMIC register reads through writing 0 to address 4 of the OpRegion is wrong. Instead of returning the read value through the value64, which is a no-op for function == ACPI_WRITE calls, store the value and then on a subsequent function == ACPI_READ with address == 3 (the address for the value field of the OpRegion) return the stored value. This has been tested on a Xiaomi Mi Pad 2 and makes the ACPI battery dev there mostly functional (unfortunately there are still other issues). Here are the SET() / GET() functions of the PMIC ACPI device, which use this OpRegion, which clearly show the new behavior to be correct: OperationRegion (REGS, 0x8F, Zero, 0x50) Field (REGS, ByteAcc, NoLock, Preserve) { CLNT, 8, SA, 8, OFF, 8, VAL, 8, RWM, 8 } Method (GET, 3, Serialized) { If ((AVBE == One)) { CLNT = Arg0 SA = Arg1 OFF = Arg2 RWM = Zero If ((AVBG == One)) { GPRW = Zero } } Return (VAL) /* \_SB_.PCI0.I2C7.PMI5.VAL_ */ } Method (SET, 4, Serialized) { If ((AVBE == One)) { CLNT = Arg0 SA = Arg1 OFF = Arg2 VAL = Arg3 RWM = One If ((AVBG == One)) { GPRW = One } } } Fixes: 0afa877a5650 ("ACPI / PMIC: intel: add REGS operation region support") Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- drivers/acpi/pmic/intel_pmic.c | 51 +++++++++++++++++++++++------------------- 1 file changed, 28 insertions(+), 23 deletions(-) (limited to 'drivers/acpi') diff --git a/drivers/acpi/pmic/intel_pmic.c b/drivers/acpi/pmic/intel_pmic.c index a371f273f99d..9cde299eba88 100644 --- a/drivers/acpi/pmic/intel_pmic.c +++ b/drivers/acpi/pmic/intel_pmic.c @@ -211,31 +211,36 @@ static acpi_status intel_pmic_regs_handler(u32 function, void *handler_context, void *region_context) { struct intel_pmic_opregion *opregion = region_context; - int result = 0; + int result = -EINVAL; + + if (function == ACPI_WRITE) { + switch (address) { + case 0: + return AE_OK; + case 1: + opregion->ctx.addr |= (*value64 & 0xff) << 8; + return AE_OK; + case 2: + opregion->ctx.addr |= *value64 & 0xff; + return AE_OK; + case 3: + opregion->ctx.val = *value64 & 0xff; + return AE_OK; + case 4: + if (*value64) { + result = regmap_write(opregion->regmap, opregion->ctx.addr, + opregion->ctx.val); + } else { + result = regmap_read(opregion->regmap, opregion->ctx.addr, + &opregion->ctx.val); + } + opregion->ctx.addr = 0; + } + } - switch (address) { - case 0: - return AE_OK; - case 1: - opregion->ctx.addr |= (*value64 & 0xff) << 8; - return AE_OK; - case 2: - opregion->ctx.addr |= *value64 & 0xff; + if (function == ACPI_READ && address == 3) { + *value64 = opregion->ctx.val; return AE_OK; - case 3: - opregion->ctx.val = *value64 & 0xff; - return AE_OK; - case 4: - if (*value64) { - result = regmap_write(opregion->regmap, opregion->ctx.addr, - opregion->ctx.val); - } else { - result = regmap_read(opregion->regmap, opregion->ctx.addr, - &opregion->ctx.val); - if (result == 0) - *value64 = opregion->ctx.val; - } - memset(&opregion->ctx, 0x00, sizeof(opregion->ctx)); } if (result < 0) { -- cgit From 3b6740bdd53cb3713642942c5476fcb6969d57d8 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 3 Nov 2021 15:26:19 +0100 Subject: ACPI: video: Drop dmi_system_id.ident settings from video_detect_dmi_table[] The .ident field of the dmi_system_id structs in the video_detect_dmi_table[] is not used by the code. Change all .ident = "..." assignments to comments, this reduces the size of video_detect.o / video.ko by about 1500 bytes. Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- drivers/acpi/video_detect.c | 70 ++++++++++++++++++++++----------------------- 1 file changed, 35 insertions(+), 35 deletions(-) (limited to 'drivers/acpi') diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 33474fd96991..7a1f8e823208 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -115,7 +115,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { */ { .callback = video_detect_force_vendor, - .ident = "X360", + /* X360 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), DMI_MATCH(DMI_PRODUCT_NAME, "X360"), @@ -124,7 +124,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_vendor, - .ident = "Asus UL30VT", + /* Asus UL30VT */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "UL30VT"), @@ -132,7 +132,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_vendor, - .ident = "Asus UL30A", + /* Asus UL30A */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"), @@ -140,7 +140,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_vendor, - .ident = "GIGABYTE GB-BXBT-2807", + /* GIGABYTE GB-BXBT-2807 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), DMI_MATCH(DMI_PRODUCT_NAME, "GB-BXBT-2807"), @@ -148,7 +148,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_vendor, - .ident = "Sony VPCEH3U1E", + /* Sony VPCEH3U1E */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"), @@ -164,7 +164,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { */ { .callback = video_detect_force_video, - .ident = "ThinkPad T420", + /* ThinkPad T420 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T420"), @@ -172,7 +172,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_video, - .ident = "ThinkPad T520", + /* ThinkPad T520 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T520"), @@ -180,7 +180,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_video, - .ident = "ThinkPad X201s", + /* ThinkPad X201s */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201s"), @@ -188,7 +188,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_video, - .ident = "ThinkPad X201T", + /* ThinkPad X201T */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201T"), @@ -199,7 +199,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugs.freedesktop.org/show_bug.cgi?id=81515 */ .callback = video_detect_force_video, - .ident = "HP ENVY 15 Notebook", + /* HP ENVY 15 Notebook */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY 15 Notebook PC"), @@ -207,7 +207,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_video, - .ident = "SAMSUNG 870Z5E/880Z5E/680Z5E", + /* SAMSUNG 870Z5E/880Z5E/680Z5E */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), DMI_MATCH(DMI_PRODUCT_NAME, "870Z5E/880Z5E/680Z5E"), @@ -215,7 +215,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_video, - .ident = "SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V", + /* SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), DMI_MATCH(DMI_PRODUCT_NAME, @@ -225,7 +225,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugzilla.redhat.com/show_bug.cgi?id=1186097 */ .callback = video_detect_force_video, - .ident = "SAMSUNG 3570R/370R/470R/450R/510R/4450RV", + /* SAMSUNG 3570R/370R/470R/450R/510R/4450RV */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), DMI_MATCH(DMI_PRODUCT_NAME, @@ -235,7 +235,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugzilla.redhat.com/show_bug.cgi?id=1557060 */ .callback = video_detect_force_video, - .ident = "SAMSUNG 670Z5E", + /* SAMSUNG 670Z5E */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), DMI_MATCH(DMI_PRODUCT_NAME, "670Z5E"), @@ -244,7 +244,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */ .callback = video_detect_force_video, - .ident = "SAMSUNG 730U3E/740U3E", + /* SAMSUNG 730U3E/740U3E */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"), @@ -253,7 +253,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugs.freedesktop.org/show_bug.cgi?id=87286 */ .callback = video_detect_force_video, - .ident = "SAMSUNG 900X3C/900X3D/900X3E/900X4C/900X4D", + /* SAMSUNG 900X3C/900X3D/900X3E/900X4C/900X4D */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), DMI_MATCH(DMI_PRODUCT_NAME, @@ -263,7 +263,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugzilla.redhat.com/show_bug.cgi?id=1272633 */ .callback = video_detect_force_video, - .ident = "Dell XPS14 L421X", + /* Dell XPS14 L421X */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "XPS L421X"), @@ -272,7 +272,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */ .callback = video_detect_force_video, - .ident = "Dell XPS15 L521X", + /* Dell XPS15 L521X */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "XPS L521X"), @@ -281,7 +281,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugzilla.kernel.org/show_bug.cgi?id=108971 */ .callback = video_detect_force_video, - .ident = "SAMSUNG 530U4E/540U4E", + /* SAMSUNG 530U4E/540U4E */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"), @@ -290,7 +290,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { /* https://bugs.launchpad.net/bugs/1894667 */ { .callback = video_detect_force_video, - .ident = "HP 635 Notebook", + /* HP 635 Notebook */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), DMI_MATCH(DMI_PRODUCT_NAME, "HP 635 Notebook PC"), @@ -301,7 +301,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugzilla.redhat.com/show_bug.cgi?id=1201530 */ .callback = video_detect_force_native, - .ident = "Lenovo Ideapad S405", + /* Lenovo Ideapad S405 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_BOARD_NAME, "Lenovo IdeaPad S405"), @@ -310,7 +310,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugzilla.redhat.com/show_bug.cgi?id=1187004 */ .callback = video_detect_force_native, - .ident = "Lenovo Ideapad Z570", + /* Lenovo Ideapad Z570 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "102434U"), @@ -318,7 +318,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_native, - .ident = "Lenovo E41-25", + /* Lenovo E41-25 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "81FS"), @@ -326,7 +326,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_native, - .ident = "Lenovo E41-45", + /* Lenovo E41-45 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "82BK"), @@ -335,7 +335,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */ .callback = video_detect_force_native, - .ident = "Apple MacBook Pro 12,1", + /* Apple MacBook Pro 12,1 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro12,1"), @@ -343,7 +343,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_native, - .ident = "Dell Vostro V131", + /* Dell Vostro V131 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"), @@ -352,7 +352,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugzilla.redhat.com/show_bug.cgi?id=1123661 */ .callback = video_detect_force_native, - .ident = "Dell XPS 17 L702X", + /* Dell XPS 17 L702X */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Dell System XPS L702X"), @@ -360,7 +360,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_native, - .ident = "Dell Precision 7510", + /* Dell Precision 7510 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"), @@ -368,7 +368,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_native, - .ident = "Acer Aspire 5738z", + /* Acer Aspire 5738z */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"), @@ -378,7 +378,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { { /* https://bugzilla.kernel.org/show_bug.cgi?id=207835 */ .callback = video_detect_force_native, - .ident = "Acer TravelMate 5735Z", + /* Acer TravelMate 5735Z */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5735Z"), @@ -387,7 +387,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_native, - .ident = "ASUSTeK COMPUTER INC. GA401", + /* ASUSTeK COMPUTER INC. GA401 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_PRODUCT_NAME, "GA401"), @@ -395,7 +395,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_native, - .ident = "ASUSTeK COMPUTER INC. GA502", + /* ASUSTeK COMPUTER INC. GA502 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_PRODUCT_NAME, "GA502"), @@ -403,7 +403,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_native, - .ident = "ASUSTeK COMPUTER INC. GA503", + /* ASUSTeK COMPUTER INC. GA503 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_PRODUCT_NAME, "GA503"), @@ -416,7 +416,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { */ { .callback = video_detect_force_none, - .ident = "Dell OptiPlex 9020M", + /* Dell OptiPlex 9020M */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 9020M"), @@ -424,7 +424,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_none, - .ident = "MSI MS-7721", + /* MSI MS-7721 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "MSI"), DMI_MATCH(DMI_PRODUCT_NAME, "MS-7721"), -- cgit From 60e6655f0a6c6e4604e4b89444e5fb8e3d43a67b Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 3 Nov 2021 15:26:20 +0100 Subject: ACPI: video: use platform backlight driver on Xiaomi Mi Pad 2 The Xiaomi Mi Pad 2 is a Cherry Trail based x86 tablet which does not use the i915's driver backlight control support: i915 0000:00:02.0: [drm:intel_panel_setup_backlight [i915]] no backlight present per VBT Like all Cherry Trail devices the ACPI tables on the Xiaomi Mi Pad 2 contain a broken ACPI-video implementation which causes 6 different acpi_video backlights to get registered when used. The lack of the i915 driver registering a BACKLIGHT_RAW (aka native) type backlight causes acpi_video_get_backlight_type() to pick the broken acpi_video backlight code as the backlight driver to use. There actually is a separate lp8556 backlight controller connected over I2C which gets registered as a BACKLIGHT_PLATFORM (aka vendor). Add a quirk to force acpi_video_get_backlight_type() to return acpi_backlight_vendor, so that the broken acpi_video backlight interfaces do not get registered. Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- drivers/acpi/video_detect.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/acpi') diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 7a1f8e823208..068e393ea0c6 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -154,6 +154,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"), }, }, + { + .callback = video_detect_force_vendor, + /* Xiaomi Mi Pad 2 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"), + DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"), + }, + }, /* * These models have a working acpi_video backlight control, and using -- cgit