summaryrefslogtreecommitdiff
path: root/drivers/acpi
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2022-10-05 20:38:24 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-10-05 20:38:24 +0300
commit7fb68b6c821be7165d5be5d8801d909912af9159 (patch)
tree2a5437907a8238fc2789f8aa53fec835f7200a9e /drivers/acpi
parent1c2daf52185bbc91421f0e84e6bf2706bb350cce (diff)
parent8d05fc039456517d2c246c7b202891188ba40c4d (diff)
downloadlinux-7fb68b6c821be7165d5be5d8801d909912af9159.tar.xz
Merge tag 'platform-drivers-x86-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Hans de Goede: - AMD Platform Management Framework (PMF) driver with AMT and QnQF support - AMD PMC: Improved logging for debugging s2idle issues - Big refactor of the ACPI/x86 backlight handling, ensuring that we only register 1 /sys/class/backlight device per LCD panel - Microsoft Surface: - Surface Laptop Go 2 support - Surface Pro 8 HID sensor support - Asus WMI: - Lots of cleanups - Support for TUF RGB keyboard backlight control - Add support for ROG X13 tablet mode - Siemens Simatic: IPC227G and IPC427G support - Toshiba ACPI laptop driver: Fan hwmon and battery ECO mode support - tools/power/x86/intel-speed-select: Various improvements - Various cleanups - Various small bugfixes * tag 'platform-drivers-x86-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (153 commits) platform/x86: use PLATFORM_DEVID_NONE instead of -1 platform/x86/amd: pmc: Dump idle mask during "check" stage instead platform/x86/intel/wmi: thunderbolt: Use dev_groups callback platform/x86/amd: pmc: remove CONFIG_DEBUG_FS checks platform/surface: Split memcpy() of struct ssam_event flexible array platform/x86: compal-laptop: Get rid of a few forward declarations platform/x86: intel-uncore-freq: Use sysfs_emit() to instead of scnprintf() platform/x86: dell-smbios-base: Use sysfs_emit() platform/x86/amd/pmf: Remove unused power_delta instances platform/x86/amd/pmf: install notify handler after acpi init Documentation/ABI/testing/sysfs-amd-pmf: Add ABI doc for AMD PMF platform/x86/amd/pmf: Add sysfs to toggle CnQF platform/x86/amd/pmf: Add support for CnQF platform/x86/amd: pmc: Fix build without debugfs platform/x86: hp-wmi: Support touchpad on/off platform/x86: int3472/discrete: Drop a forward declaration platform/x86: toshiba_acpi: change turn_on_panel_on_resume to static platform/x86: wmi: Drop forward declaration of static functions platform/x86: toshiba_acpi: Remove duplicate include platform/x86: msi-laptop: Change DMI match / alias strings to fix module autoloading ...
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/Kconfig1
-rw-r--r--drivers/acpi/acpi_video.c128
-rw-r--r--drivers/acpi/sleep.h1
-rw-r--r--drivers/acpi/video_detect.c449
-rw-r--r--drivers/acpi/x86/s2idle.c14
5 files changed, 344 insertions, 249 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index bc9ddd2e3b05..473241b5193f 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -209,6 +209,7 @@ config ACPI_VIDEO
tristate "Video"
depends on BACKLIGHT_CLASS_DEVICE
depends on INPUT
+ depends on ACPI_WMI || !X86
select THERMAL
help
This driver implements the ACPI Extensions For Display Adapters
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index 6d209ea68bd8..32953646caeb 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -47,9 +47,6 @@ module_param(brightness_switch_enabled, bool, 0644);
static bool allow_duplicates;
module_param(allow_duplicates, bool, 0644);
-static int disable_backlight_sysfs_if = -1;
-module_param(disable_backlight_sysfs_if, int, 0444);
-
#define REPORT_OUTPUT_KEY_EVENTS 0x01
#define REPORT_BRIGHTNESS_KEY_EVENTS 0x02
static int report_key_events = -1;
@@ -73,6 +70,16 @@ module_param(device_id_scheme, bool, 0444);
static int only_lcd = -1;
module_param(only_lcd, int, 0444);
+/*
+ * Display probing is known to take up to 5 seconds, so delay the fallback
+ * backlight registration by 5 seconds + 3 seconds for some extra margin.
+ */
+static int register_backlight_delay = 8;
+module_param(register_backlight_delay, int, 0444);
+MODULE_PARM_DESC(register_backlight_delay,
+ "Delay in seconds before doing fallback (non GPU driver triggered) "
+ "backlight registration, set to 0 to disable.");
+
static bool may_report_brightness_keys;
static int register_count;
static DEFINE_MUTEX(register_count_mutex);
@@ -81,7 +88,9 @@ static LIST_HEAD(video_bus_head);
static int acpi_video_bus_add(struct acpi_device *device);
static int acpi_video_bus_remove(struct acpi_device *device);
static void acpi_video_bus_notify(struct acpi_device *device, u32 event);
-void acpi_video_detect_exit(void);
+static void acpi_video_bus_register_backlight_work(struct work_struct *ignored);
+static DECLARE_DELAYED_WORK(video_bus_register_backlight_work,
+ acpi_video_bus_register_backlight_work);
/*
* Indices in the _BCL method response: the first two items are special,
@@ -382,14 +391,6 @@ static int video_set_bqc_offset(const struct dmi_system_id *d)
return 0;
}
-static int video_disable_backlight_sysfs_if(
- const struct dmi_system_id *d)
-{
- if (disable_backlight_sysfs_if == -1)
- disable_backlight_sysfs_if = 1;
- return 0;
-}
-
static int video_set_device_id_scheme(const struct dmi_system_id *d)
{
device_id_scheme = true;
@@ -463,56 +464,6 @@ static const struct dmi_system_id video_dmi_table[] = {
},
/*
- * Some machines have a broken acpi-video interface for brightness
- * control, but still need an acpi_video_device_lcd_set_level() call
- * on resume to turn the backlight power on. We Enable backlight
- * control on these systems, but do not register a backlight sysfs
- * as brightness control does not work.
- */
- {
- /* https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
- .callback = video_disable_backlight_sysfs_if,
- .ident = "Toshiba Portege R700",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R700"),
- },
- },
- {
- /* https://bugs.freedesktop.org/show_bug.cgi?id=82634 */
- .callback = video_disable_backlight_sysfs_if,
- .ident = "Toshiba Portege R830",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R830"),
- },
- },
- {
- /* https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
- .callback = video_disable_backlight_sysfs_if,
- .ident = "Toshiba Satellite R830",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE R830"),
- },
- },
- {
- .callback = video_disable_backlight_sysfs_if,
- .ident = "Toshiba Satellite Z830",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE Z830"),
- },
- },
- {
- .callback = video_disable_backlight_sysfs_if,
- .ident = "Toshiba Portege Z830",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE Z830"),
- },
- },
- /*
* Some machine's _DOD IDs don't have bit 31(Device ID Scheme) set
* but the IDs actually follow the Device ID Scheme.
*/
@@ -1774,9 +1725,6 @@ static void acpi_video_dev_register_backlight(struct acpi_video_device *device)
if (result)
return;
- if (disable_backlight_sysfs_if > 0)
- return;
-
name = kasprintf(GFP_KERNEL, "acpi_video%d", count);
if (!name)
return;
@@ -1875,8 +1823,6 @@ static int acpi_video_bus_register_backlight(struct acpi_video_bus *video)
if (video->backlight_registered)
return 0;
- acpi_video_run_bcl_for_osi(video);
-
if (acpi_video_get_backlight_type() != acpi_backlight_video)
return 0;
@@ -2102,7 +2048,11 @@ static int acpi_video_bus_add(struct acpi_device *device)
list_add_tail(&video->entry, &video_bus_head);
mutex_unlock(&video_list_lock);
- acpi_video_bus_register_backlight(video);
+ /*
+ * The userspace visible backlight_device gets registered separately
+ * from acpi_video_register_backlight().
+ */
+ acpi_video_run_bcl_for_osi(video);
acpi_video_bus_add_notify_handler(video);
return 0;
@@ -2127,20 +2077,25 @@ static int acpi_video_bus_remove(struct acpi_device *device)
video = acpi_driver_data(device);
- acpi_video_bus_remove_notify_handler(video);
- acpi_video_bus_unregister_backlight(video);
- acpi_video_bus_put_devices(video);
-
mutex_lock(&video_list_lock);
list_del(&video->entry);
mutex_unlock(&video_list_lock);
+ acpi_video_bus_remove_notify_handler(video);
+ acpi_video_bus_unregister_backlight(video);
+ acpi_video_bus_put_devices(video);
+
kfree(video->attached_array);
kfree(video);
return 0;
}
+static void acpi_video_bus_register_backlight_work(struct work_struct *ignored)
+{
+ acpi_video_register_backlight();
+}
+
static int __init is_i740(struct pci_dev *dev)
{
if (dev->device == 0x00D1)
@@ -2251,6 +2206,18 @@ int acpi_video_register(void)
*/
register_count = 1;
+ /*
+ * acpi_video_bus_add() skips registering the userspace visible
+ * backlight_device. The intend is for this to be registered by the
+ * drm/kms driver calling acpi_video_register_backlight() *after* it is
+ * done setting up its own native backlight device. The delayed work
+ * ensures that acpi_video_register_backlight() always gets called
+ * eventually, in case there is no drm/kms driver or it is disabled.
+ */
+ if (register_backlight_delay)
+ schedule_delayed_work(&video_bus_register_backlight_work,
+ register_backlight_delay * HZ);
+
leave:
mutex_unlock(&register_count_mutex);
return ret;
@@ -2261,6 +2228,7 @@ void acpi_video_unregister(void)
{
mutex_lock(&register_count_mutex);
if (register_count) {
+ cancel_delayed_work_sync(&video_bus_register_backlight_work);
acpi_bus_unregister_driver(&acpi_video_bus);
register_count = 0;
may_report_brightness_keys = false;
@@ -2269,19 +2237,16 @@ void acpi_video_unregister(void)
}
EXPORT_SYMBOL(acpi_video_unregister);
-void acpi_video_unregister_backlight(void)
+void acpi_video_register_backlight(void)
{
struct acpi_video_bus *video;
- mutex_lock(&register_count_mutex);
- if (register_count) {
- mutex_lock(&video_list_lock);
- list_for_each_entry(video, &video_bus_head, entry)
- acpi_video_bus_unregister_backlight(video);
- mutex_unlock(&video_list_lock);
- }
- mutex_unlock(&register_count_mutex);
+ mutex_lock(&video_list_lock);
+ list_for_each_entry(video, &video_bus_head, entry)
+ acpi_video_bus_register_backlight(video);
+ mutex_unlock(&video_list_lock);
}
+EXPORT_SYMBOL(acpi_video_register_backlight);
bool acpi_video_handles_brightness_key_presses(void)
{
@@ -2318,7 +2283,6 @@ static int __init acpi_video_init(void)
static void __exit acpi_video_exit(void)
{
- acpi_video_detect_exit();
acpi_video_unregister();
}
diff --git a/drivers/acpi/sleep.h b/drivers/acpi/sleep.h
index 7fe41ee489d6..d960a238be4e 100644
--- a/drivers/acpi/sleep.h
+++ b/drivers/acpi/sleep.h
@@ -18,6 +18,7 @@ static inline acpi_status acpi_set_waking_vector(u32 wakeup_address)
extern int acpi_s2idle_begin(void);
extern int acpi_s2idle_prepare(void);
extern int acpi_s2idle_prepare_late(void);
+extern void acpi_s2idle_check(void);
extern bool acpi_s2idle_wake(void);
extern void acpi_s2idle_restore_early(void);
extern void acpi_s2idle_restore(void);
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 5d7f38016a24..0d9064a9804c 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -17,8 +17,9 @@
* Otherwise vendor specific drivers like thinkpad_acpi, asus-laptop,
* sony_acpi,... can take care about backlight brightness.
*
- * Backlight drivers can use acpi_video_get_backlight_type() to determine
- * which driver should handle the backlight.
+ * Backlight drivers can use acpi_video_get_backlight_type() to determine which
+ * driver should handle the backlight. RAW/GPU-driver backlight drivers must
+ * use the acpi_video_backlight_use_native() helper for this.
*
* If CONFIG_ACPI_VIDEO is neither set as "compiled in" (y) nor as a module (m)
* this file will not be compiled and acpi_video_get_backlight_type() will
@@ -27,20 +28,16 @@
#include <linux/export.h>
#include <linux/acpi.h>
+#include <linux/apple-gmux.h>
#include <linux/backlight.h>
#include <linux/dmi.h>
#include <linux/module.h>
#include <linux/pci.h>
+#include <linux/platform_data/x86/nvidia-wmi-ec-backlight.h>
#include <linux/types.h>
#include <linux/workqueue.h>
#include <acpi/video.h>
-void acpi_video_unregister_backlight(void);
-
-static bool backlight_notifier_registered;
-static struct notifier_block backlight_nb;
-static struct work_struct backlight_notify_work;
-
static enum acpi_backlight_type acpi_backlight_cmdline = acpi_backlight_undef;
static enum acpi_backlight_type acpi_backlight_dmi = acpi_backlight_undef;
@@ -78,6 +75,36 @@ find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
return AE_OK;
}
+/* This depends on ACPI_WMI which is X86 only */
+#ifdef CONFIG_X86
+static bool nvidia_wmi_ec_supported(void)
+{
+ struct wmi_brightness_args args = {
+ .mode = WMI_BRIGHTNESS_MODE_GET,
+ .val = 0,
+ .ret = 0,
+ };
+ struct acpi_buffer buf = { (acpi_size)sizeof(args), &args };
+ acpi_status status;
+
+ status = wmi_evaluate_method(WMI_BRIGHTNESS_GUID, 0,
+ WMI_BRIGHTNESS_METHOD_SOURCE, &buf, &buf);
+ if (ACPI_FAILURE(status))
+ return false;
+
+ /*
+ * If brightness is handled by the EC then nvidia-wmi-ec-backlight
+ * should be used, else the GPU driver(s) should be used.
+ */
+ return args.ret == WMI_BRIGHTNESS_SOURCE_EC;
+}
+#else
+static bool nvidia_wmi_ec_supported(void)
+{
+ return false;
+}
+#endif
+
/* Force to use vendor driver when the ACPI device is known to be
* buggy */
static int video_detect_force_vendor(const struct dmi_system_id *d)
@@ -105,63 +132,143 @@ static int video_detect_force_none(const struct dmi_system_id *d)
}
static const struct dmi_system_id video_detect_dmi_table[] = {
- /* On Samsung X360, the BIOS will set a flag (VDRV) if generic
- * ACPI backlight device is used. This flag will definitively break
- * the backlight interface (even the vendor interface) until next
- * reboot. It's why we should prevent video.ko from being used here
- * and we can't rely on a later call to acpi_video_unregister().
- */
{
+ /* https://bugzilla.redhat.com/show_bug.cgi?id=1128309 */
.callback = video_detect_force_vendor,
- /* X360 */
+ /* Acer KAV80 */
.matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
- DMI_MATCH(DMI_PRODUCT_NAME, "X360"),
- DMI_MATCH(DMI_BOARD_NAME, "X360"),
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
},
},
{
- .callback = video_detect_force_vendor,
- /* Asus UL30VT */
- .matches = {
+ .callback = video_detect_force_vendor,
+ /* Asus UL30VT */
+ .matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "UL30VT"),
},
},
{
- .callback = video_detect_force_vendor,
- /* Asus UL30A */
- .matches = {
+ .callback = video_detect_force_vendor,
+ /* Asus UL30A */
+ .matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"),
},
},
{
- .callback = video_detect_force_vendor,
- /* GIGABYTE GB-BXBT-2807 */
- .matches = {
+ .callback = video_detect_force_vendor,
+ /* Asus X55U */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X55U"),
+ },
+ },
+ {
+ .callback = video_detect_force_vendor,
+ /* Asus X101CH */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"),
+ },
+ },
+ {
+ .callback = video_detect_force_vendor,
+ /* Asus X401U */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X401U"),
+ },
+ },
+ {
+ .callback = video_detect_force_vendor,
+ /* Asus X501U */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X501U"),
+ },
+ },
+ {
+ .callback = video_detect_force_vendor,
+ /* Asus 1015CX */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"),
+ },
+ },
+ {
+ .callback = video_detect_force_vendor,
+ /* GIGABYTE GB-BXBT-2807 */
+ .matches = {
DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
DMI_MATCH(DMI_PRODUCT_NAME, "GB-BXBT-2807"),
},
},
{
- .callback = video_detect_force_vendor,
- /* Sony VPCEH3U1E */
- .matches = {
+ .callback = video_detect_force_vendor,
+ /* Samsung N150/N210/N220 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"),
+ DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"),
+ },
+ },
+ {
+ .callback = video_detect_force_vendor,
+ /* Samsung NF110/NF210/NF310 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"),
+ DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"),
+ },
+ },
+ {
+ .callback = video_detect_force_vendor,
+ /* Samsung NC210 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "NC210/NC110"),
+ DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"),
+ },
+ },
+ {
+ .callback = video_detect_force_vendor,
+ /* Sony VPCEH3U1E */
+ .matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"),
},
},
{
- .callback = video_detect_force_vendor,
- /* Xiaomi Mi Pad 2 */
- .matches = {
+ .callback = video_detect_force_vendor,
+ /* Xiaomi Mi Pad 2 */
+ .matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),
DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
},
},
/*
+ * Toshiba models with Transflective display, these need to use
+ * the toshiba_acpi vendor driver for proper Transflective handling.
+ */
+ {
+ .callback = video_detect_force_vendor,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R500"),
+ },
+ },
+ {
+ .callback = video_detect_force_vendor,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R600"),
+ },
+ },
+
+ /*
* These models have a working acpi_video backlight control, and using
* native backlight causes a regression where backlight does not work
* when userspace is not handling brightness key events. Disable
@@ -390,6 +497,41 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
},
},
{
+ /* https://bugzilla.redhat.com/show_bug.cgi?id=1012674 */
+ .callback = video_detect_force_native,
+ /* Acer Aspire 5741 */
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
+ },
+ },
+ {
+ /* https://bugzilla.kernel.org/show_bug.cgi?id=42993 */
+ .callback = video_detect_force_native,
+ /* Acer Aspire 5750 */
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
+ },
+ },
+ {
+ /* https://bugzilla.kernel.org/show_bug.cgi?id=42833 */
+ .callback = video_detect_force_native,
+ /* Acer Extensa 5235 */
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
+ },
+ },
+ {
+ .callback = video_detect_force_native,
+ /* Acer TravelMate 4750 */
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
+ },
+ },
+ {
/* https://bugzilla.kernel.org/show_bug.cgi?id=207835 */
.callback = video_detect_force_native,
/* Acer TravelMate 5735Z */
@@ -400,120 +542,109 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
},
},
{
- .callback = video_detect_force_native,
- /* ASUSTeK COMPUTER INC. GA401 */
- .matches = {
+ /* https://bugzilla.kernel.org/show_bug.cgi?id=36322 */
+ .callback = video_detect_force_native,
+ /* Acer TravelMate 5760 */
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
+ },
+ },
+ {
+ .callback = video_detect_force_native,
+ /* ASUSTeK COMPUTER INC. GA401 */
+ .matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
DMI_MATCH(DMI_PRODUCT_NAME, "GA401"),
},
},
{
- .callback = video_detect_force_native,
- /* ASUSTeK COMPUTER INC. GA502 */
- .matches = {
+ .callback = video_detect_force_native,
+ /* ASUSTeK COMPUTER INC. GA502 */
+ .matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
DMI_MATCH(DMI_PRODUCT_NAME, "GA502"),
},
},
{
- .callback = video_detect_force_native,
- /* ASUSTeK COMPUTER INC. GA503 */
- .matches = {
+ .callback = video_detect_force_native,
+ /* ASUSTeK COMPUTER INC. GA503 */
+ .matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
DMI_MATCH(DMI_PRODUCT_NAME, "GA503"),
},
},
- /*
- * Clevo NL5xRU and NL5xNU/TUXEDO Aura 15 Gen1 and Gen2 have both a
- * working native and video interface. However the default detection
- * mechanism first registers the video interface before unregistering
- * it again and switching to the native interface during boot. This
- * results in a dangling SBIOS request for backlight change for some
- * reason, causing the backlight to switch to ~2% once per boot on the
- * first power cord connect or disconnect event. Setting the native
- * interface explicitly circumvents this buggy behaviour, by avoiding
- * the unregistering process.
- */
{
- .callback = video_detect_force_native,
- .ident = "Clevo NL5xRU",
- .matches = {
- DMI_MATCH(DMI_BOARD_NAME, "NL5xRU"),
+ .callback = video_detect_force_native,
+ /* Asus UX303UB */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "UX303UB"),
},
},
{
- .callback = video_detect_force_native,
- .ident = "Clevo NL5xRU",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
- DMI_MATCH(DMI_BOARD_NAME, "AURA1501"),
+ .callback = video_detect_force_native,
+ /* Samsung N150P */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "N150P"),
+ DMI_MATCH(DMI_BOARD_NAME, "N150P"),
},
},
{
- .callback = video_detect_force_native,
- .ident = "Clevo NL5xRU",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
- DMI_MATCH(DMI_BOARD_NAME, "EDUBOOK1502"),
+ .callback = video_detect_force_native,
+ /* Samsung N145P/N250P/N260P */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"),
+ DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"),
},
},
{
- .callback = video_detect_force_native,
- .ident = "Clevo NL5xNU",
- .matches = {
- DMI_MATCH(DMI_BOARD_NAME, "NL5xNU"),
+ .callback = video_detect_force_native,
+ /* Samsung N250P */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "N250P"),
+ DMI_MATCH(DMI_BOARD_NAME, "N250P"),
},
},
+
/*
- * The TongFang PF5PU1G, PF4NU1F, PF5NU1G, and PF5LUXG/TUXEDO BA15 Gen10,
- * Pulse 14/15 Gen1, and Pulse 15 Gen2 have the same problem as the Clevo
- * NL5xRU and NL5xNU/TUXEDO Aura 15 Gen1 and Gen2. See the description
- * above.
+ * These Toshibas have a broken acpi-video interface for brightness
+ * control. They also have an issue where the panel is off after
+ * suspend until a special firmware call is made to turn it back
+ * on. This is handled by the toshiba_acpi kernel module, so that
+ * module must be enabled for these models to work correctly.
*/
{
- .callback = video_detect_force_native,
- .ident = "TongFang PF5PU1G",
- .matches = {
- DMI_MATCH(DMI_BOARD_NAME, "PF5PU1G"),
- },
- },
- {
- .callback = video_detect_force_native,
- .ident = "TongFang PF4NU1F",
- .matches = {
- DMI_MATCH(DMI_BOARD_NAME, "PF4NU1F"),
- },
- },
- {
- .callback = video_detect_force_native,
- .ident = "TongFang PF4NU1F",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
- DMI_MATCH(DMI_BOARD_NAME, "PULSE1401"),
- },
- },
- {
- .callback = video_detect_force_native,
- .ident = "TongFang PF5NU1G",
- .matches = {
- DMI_MATCH(DMI_BOARD_NAME, "PF5NU1G"),
+ /* https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
+ .callback = video_detect_force_native,
+ /* Toshiba Portégé R700 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R700"),
},
},
{
- .callback = video_detect_force_native,
- .ident = "TongFang PF5NU1G",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
- DMI_MATCH(DMI_BOARD_NAME, "PULSE1501"),
+ /* Portégé: https://bugs.freedesktop.org/show_bug.cgi?id=82634 */
+ /* Satellite: https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
+ .callback = video_detect_force_native,
+ /* Toshiba Satellite/Portégé R830 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "R830"),
},
},
{
- .callback = video_detect_force_native,
- .ident = "TongFang PF5LUXG",
- .matches = {
- DMI_MATCH(DMI_BOARD_NAME, "PF5LUXG"),
+ .callback = video_detect_force_native,
+ /* Toshiba Satellite/Portégé Z830 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Z830"),
},
},
+
/*
* Desktops which falsely report a backlight and which our heuristics
* for this do not catch.
@@ -537,43 +668,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
{ },
};
-/* This uses a workqueue to avoid various locking ordering issues */
-static void acpi_video_backlight_notify_work(struct work_struct *work)
-{
- if (acpi_video_get_backlight_type() != acpi_backlight_video)
- acpi_video_unregister_backlight();
-}
-
-static int acpi_video_backlight_notify(struct notifier_block *nb,
- unsigned long val, void *bd)
-{
- struct backlight_device *backlight = bd;
-
- /* A raw bl registering may change video -> native */
- if (backlight->props.type == BACKLIGHT_RAW &&
- val == BACKLIGHT_REGISTERED)
- schedule_work(&backlight_notify_work);
-
- return NOTIFY_OK;
-}
-
/*
* Determine which type of backlight interface to use on this system,
* First check cmdline, then dmi quirks, then do autodetect.
- *
- * The autodetect order is:
- * 1) Is the acpi-video backlight interface supported ->
- * no, use a vendor interface
- * 2) Is this a win8 "ready" BIOS and do we have a native interface ->
- * yes, use a native interface
- * 3) Else use the acpi-video interface
- *
- * Arguably the native on win8 check should be done first, but that would
- * be a behavior change, which may causes issues.
*/
-enum acpi_backlight_type acpi_video_get_backlight_type(void)
+static enum acpi_backlight_type __acpi_video_get_backlight_type(bool native)
{
static DEFINE_MUTEX(init_mutex);
+ static bool nvidia_wmi_ec_present;
+ static bool native_available;
static bool init_done;
static long video_caps;
@@ -585,48 +688,60 @@ enum acpi_backlight_type acpi_video_get_backlight_type(void)
acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, find_video, NULL,
&video_caps, NULL);
- INIT_WORK(&backlight_notify_work,
- acpi_video_backlight_notify_work);
- backlight_nb.notifier_call = acpi_video_backlight_notify;
- backlight_nb.priority = 0;
- if (backlight_register_notifier(&backlight_nb) == 0)
- backlight_notifier_registered = true;
+ nvidia_wmi_ec_present = nvidia_wmi_ec_supported();
init_done = true;
}
+ if (native)
+ native_available = true;
mutex_unlock(&init_mutex);
+ /*
+ * The below heuristics / detection steps are in order of descending
+ * presedence. The commandline takes presedence over anything else.
+ */
if (acpi_backlight_cmdline != acpi_backlight_undef)
return acpi_backlight_cmdline;
+ /* DMI quirks override any autodetection. */
if (acpi_backlight_dmi != acpi_backlight_undef)
return acpi_backlight_dmi;
- if (!(video_caps & ACPI_VIDEO_BACKLIGHT))
- return acpi_backlight_vendor;
+ /* Special cases such as nvidia_wmi_ec and apple gmux. */
+ if (nvidia_wmi_ec_present)
+ return acpi_backlight_nvidia_wmi_ec;
- if (acpi_osi_is_win8() && backlight_device_get_by_type(BACKLIGHT_RAW))
- return acpi_backlight_native;
+ if (apple_gmux_present())
+ return acpi_backlight_apple_gmux;
+
+ /* On systems with ACPI video use either native or ACPI video. */
+ if (video_caps & ACPI_VIDEO_BACKLIGHT) {
+ /*
+ * Windows 8 and newer no longer use the ACPI video interface,
+ * so it often does not work. If the ACPI tables are written
+ * for win8 and native brightness ctl is available, use that.
+ *
+ * The native check deliberately is inside the if acpi-video
+ * block on older devices without acpi-video support native
+ * is usually not the best choice.
+ */
+ if (acpi_osi_is_win8() && native_available)
+ return acpi_backlight_native;
+ else
+ return acpi_backlight_video;
+ }
- return acpi_backlight_video;
+ /* No ACPI video (old hw), use vendor specific fw methods. */
+ return acpi_backlight_vendor;
}
-EXPORT_SYMBOL(acpi_video_get_backlight_type);
-/*
- * Set the preferred backlight interface type based on DMI info.
- * This function allows DMI blacklists to be implemented by external
- * platform drivers instead of putting a big blacklist in video_detect.c
- */
-void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type)
+enum acpi_backlight_type acpi_video_get_backlight_type(void)
{
- acpi_backlight_dmi = type;
- /* Remove acpi-video backlight interface if it is no longer desired */
- if (acpi_video_get_backlight_type() != acpi_backlight_video)
- acpi_video_unregister_backlight();
+ return __acpi_video_get_backlight_type(false);
}
-EXPORT_SYMBOL(acpi_video_set_dmi_backlight_type);
+EXPORT_SYMBOL(acpi_video_get_backlight_type);
-void __exit acpi_video_detect_exit(void)
+bool acpi_video_backlight_use_native(void)
{
- if (backlight_notifier_registered)
- backlight_unregister_notifier(&backlight_nb);
+ return __acpi_video_get_backlight_type(true) == acpi_backlight_native;
}
+EXPORT_SYMBOL(acpi_video_backlight_use_native);
diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c
index 0155c1d2d608..42f249070c09 100644
--- a/drivers/acpi/x86/s2idle.c
+++ b/drivers/acpi/x86/s2idle.c
@@ -584,6 +584,19 @@ int acpi_s2idle_prepare_late(void)
return 0;
}
+void acpi_s2idle_check(void)
+{
+ struct acpi_s2idle_dev_ops *handler;
+
+ if (!lps0_device_handle || sleep_no_lps0)
+ return;
+
+ list_for_each_entry(handler, &lps0_s2idle_devops_head, list_node) {
+ if (handler->check)
+ handler->check();
+ }
+}
+
void acpi_s2idle_restore_early(void)
{
struct acpi_s2idle_dev_ops *handler;
@@ -625,6 +638,7 @@ static const struct platform_s2idle_ops acpi_s2idle_ops_lps0 = {
.begin = acpi_s2idle_begin,
.prepare = acpi_s2idle_prepare,
.prepare_late = acpi_s2idle_prepare_late,
+ .check = acpi_s2idle_check,
.wake = acpi_s2idle_wake,
.restore_early = acpi_s2idle_restore_early,
.restore = acpi_s2idle_restore,