Merge tag 'pm+acpi-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael Wysocki:
 "Again, ACPICA leads the pack (47 commits), followed by cpufreq (18
  commits) and system suspend/hibernation (9 commits).

  From the new code perspective, the ACPICA update brings ACPI 5.1 to
  the table, including a new device configuration object called _DSD
  (Device Specific Data) that will hopefully help us to operate device
  properties like Device Trees do (at least to some extent) and changes
  related to supporting ACPI on ARM.

  Apart from that we have hibernation changes making it use radix trees
  to store memory bitmaps which should speed up some operations carried
  out by it quite significantly.  We also have some power management
  changes related to suspend-to-idle (the "freeze" sleep state) support
  and more preliminary changes needed to support ACPI on ARM (outside of
  ACPICA).

  The rest is fixes and cleanups pretty much everywhere.

  Specifics:

   - ACPICA update to upstream version 20140724.  That includes ACPI 5.1
     material (support for the _CCA and _DSD predefined names, changes
     related to the DMAR and PCCT tables and ARM support among other
     things) and cleanups related to using ACPICA's header files.  A
     major part of it is related to acpidump and the core code used by
     that utility.  Changes from Bob Moore, David E Box, Lv Zheng,
     Sascha Wildner, Tomasz Nowicki, Hanjun Guo.

   - Radix trees for memory bitmaps used by the hibernation core from
     Joerg Roedel.

   - Support for waking up the system from suspend-to-idle (also known
     as the "freeze" sleep state) using ACPI-based PCI wakeup signaling
     (Rafael J Wysocki).

   - Fixes for issues related to ACPI button events (Rafael J Wysocki).

   - New device ID for an ACPI-enumerated device included into the
     Wildcat Point PCH from Jie Yang.

   - ACPI video updates related to backlight handling from Hans de Goede
     and Linus Torvalds.

   - Preliminary changes needed to support ACPI on ARM from Hanjun Guo
     and Graeme Gregory.

   - ACPI PNP core cleanups from Arjun Sreedharan and Zhang Rui.

   - Cleanups related to ACPI_COMPANION() and ACPI_HANDLE() macros
     (Rafael J Wysocki).

   - ACPI-based device hotplug cleanups from Wei Yongjun and Rafael J
     Wysocki.

   - Cleanups and improvements related to system suspend from Lan
     Tianyu, Randy Dunlap and Rafael J Wysocki.

   - ACPI battery cleanup from Wei Yongjun.

   - cpufreq core fixes from Viresh Kumar.

   - Elimination of a deadband effect from the cpufreq ondemand governor
     and intel_pstate driver cleanups from Stratos Karafotis.

   - 350MHz CPU support for the powernow-k6 cpufreq driver from Mikulas
     Patocka.

   - Fix for the imx6 cpufreq driver from Anson Huang.

   - cpuidle core and governor cleanups from Daniel Lezcano, Sandeep
     Tripathy and Mohammad Merajul Islam Molla.

   - Build fix for the big_little cpuidle driver from Sachin Kamat.

   - Configuration fix for the Operation Performance Points (OPP)
     framework from Mark Brown.

   - APM cleanup from Jean Delvare.

   - cpupower utility fixes and cleanups from Peter Senna Tschudin,
     Andrey Utkin, Himangi Saraogi, Rickard Strandqvist, Thomas
     Renninger"

* tag 'pm+acpi-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (118 commits)
  ACPI / LPSS: add LPSS device for Wildcat Point PCH
  ACPI / PNP: Replace faulty is_hex_digit() by isxdigit()
  ACPICA: Update version to 20140724.
  ACPICA: ACPI 5.1: Update for PCCT table changes.
  ACPICA/ARM: ACPI 5.1: Update for GTDT table changes.
  ACPICA/ARM: ACPI 5.1: Update for MADT changes.
  ACPICA/ARM: ACPI 5.1: Update for FADT changes.
  ACPICA: ACPI 5.1: Support for the _CCA predifined name.
  ACPICA: ACPI 5.1: New notify value for System Affinity Update.
  ACPICA: ACPI 5.1: Support for the _DSD predefined name.
  ACPICA: Debug object: Add current value of Timer() to debug line prefix.
  ACPICA: acpihelp: Add UUID support, restructure some existing files.
  ACPICA: Utilities: Fix local printf issue.
  ACPICA: Tables: Update for DMAR table changes.
  ACPICA: Remove some extraneous printf arguments.
  ACPICA: Update for comments/formatting. No functional changes.
  ACPICA: Disassembler: Add support for the ToUUID opererator (macro).
  ACPICA: Remove a redundant cast to acpi_size for ACPI_OFFSET() macro.
  ACPICA: Work around an ancient GCC bug.
  ACPI / processor: Make it possible to get local x2apic id via _MAT
  ...

1 files changed, 102 insertions, 19 deletions

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 350d52a8f781..826884392e6b 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -204,6 +204,8 @@ struct acpi_video_device {
 	struct acpi_video_device_flags flags;
 	struct acpi_video_device_cap cap;
 	struct list_head entry;
+	struct delayed_work switch_brightness_work;
+	int switch_brightness_event;
 	struct acpi_video_bus *video;
 	struct acpi_device *dev;
 	struct acpi_video_device_brightness *brightness;
@@ -230,8 +232,7 @@ static int acpi_video_device_lcd_get_level_current(
 			unsigned long long *level, bool raw);
 static int acpi_video_get_next_level(struct acpi_video_device *device,
 				     u32 level_current, u32 event);
-static int acpi_video_switch_brightness(struct acpi_video_device *device,
-					 int event);
+static void acpi_video_switch_brightness(struct work_struct *work);
 
 static bool acpi_video_use_native_backlight(void)
 {
@@ -275,6 +276,7 @@ static int acpi_video_set_brightness(struct backlight_device *bd)
 	int request_level = bd->props.brightness + 2;
 	struct acpi_video_device *vd = bl_get_data(bd);
 
+	cancel_delayed_work(&vd->switch_brightness_work);
 	return acpi_video_device_lcd_set_level(vd,
 				vd->brightness->levels[request_level]);
 }
@@ -461,6 +463,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
 	},
 	{
 	 .callback = video_set_use_native_backlight,
+	 .ident = "ThinkPad X230",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X230"),
+		},
+	},
+	{
+	 .callback = video_set_use_native_backlight,
 	 .ident = "ThinkPad T430 and T430s",
 	 .matches = {
 		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
@@ -469,10 +479,42 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
 	},
 	{
 	 .callback = video_set_use_native_backlight,
-	 .ident = "ThinkPad X230",
+	 .ident = "ThinkPad T430",
 	 .matches = {
 		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X230"),
+		DMI_MATCH(DMI_PRODUCT_VERSION, "2349D15"),
+		},
+	},
+	{
+	 .callback = video_set_use_native_backlight,
+	 .ident = "ThinkPad T431s",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_PRODUCT_VERSION, "20AACTO1WW"),
+		},
+	},
+	{
+	 .callback = video_set_use_native_backlight,
+	 .ident = "ThinkPad Edge E530",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_PRODUCT_VERSION, "3259A2G"),
+		},
+	},
+	{
+	 .callback = video_set_use_native_backlight,
+	 .ident = "ThinkPad Edge E530",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_PRODUCT_VERSION, "3259CTO"),
+		},
+	},
+	{
+	 .callback = video_set_use_native_backlight,
+	 .ident = "ThinkPad Edge E530",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_PRODUCT_VERSION, "3259HJG"),
 		},
 	},
 	{
@@ -572,6 +614,30 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
 		},
 	},
 	{
+	 .callback = video_set_use_native_backlight,
+	 .ident = "Acer Aspire V5-572G",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Acer Aspire"),
+		DMI_MATCH(DMI_PRODUCT_VERSION, "V5-572G/Dazzle_CX"),
+		},
+	},
+	{
+	 .callback = video_set_use_native_backlight,
+	 .ident = "Acer Aspire V5-573G",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Acer Aspire"),
+		DMI_MATCH(DMI_PRODUCT_VERSION, "V5-573G/Dazzle_HW"),
+		},
+	},
+	{
+	 .callback = video_set_use_native_backlight,
+	 .ident = "ASUS Zenbook Prime UX31A",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "UX31A"),
+		},
+	},
+	{
 	.callback = video_set_use_native_backlight,
 	.ident = "HP ProBook 4340s",
 	.matches = {
@@ -607,6 +673,15 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
 	},
 	{
 	.callback = video_set_use_native_backlight,
+	.ident = "HP EliteBook 2014 models",
+	.matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook "),
+		DMI_MATCH(DMI_PRODUCT_NAME, " G2"),
+		},
+	},
+	{
+	.callback = video_set_use_native_backlight,
 	.ident = "HP ZBook 14",
 	.matches = {
 		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
@@ -1188,6 +1263,8 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
 	data->device_id = device_id;
 	data->video = video;
 	data->dev = device;
+	INIT_DELAYED_WORK(&data->switch_brightness_work,
+			  acpi_video_switch_brightness);
 
 	attribute = acpi_video_get_device_attr(video, device_id);
 
@@ -1410,15 +1487,18 @@ acpi_video_get_next_level(struct acpi_video_device *device,
 	}
 }
 
-static int
-acpi_video_switch_brightness(struct acpi_video_device *device, int event)
+static void
+acpi_video_switch_brightness(struct work_struct *work)
 {
+	struct acpi_video_device *device = container_of(to_delayed_work(work),
+			     struct acpi_video_device, switch_brightness_work);
 	unsigned long long level_current, level_next;
+	int event = device->switch_brightness_event;
 	int result = -EINVAL;
 
 	/* no warning message if acpi_backlight=vendor or a quirk is used */
 	if (!acpi_video_verify_backlight_support())
-		return 0;
+		return;
 
 	if (!device->brightness)
 		goto out;
@@ -1440,8 +1520,6 @@ acpi_video_switch_brightness(struct acpi_video_device *device, int event)
 out:
 	if (result)
 		printk(KERN_ERR PREFIX "Failed to switch the brightness\n");
-
-	return result;
 }
 
 int acpi_video_get_edid(struct acpi_device *device, int type, int device_id,
@@ -1609,6 +1687,16 @@ static void acpi_video_bus_notify(struct acpi_device *device, u32 event)
 	return;
 }
 
+static void brightness_switch_event(struct acpi_video_device *video_device,
+				    u32 event)
+{
+	if (!brightness_switch_enabled)
+		return;
+
+	video_device->switch_brightness_event = event;
+	schedule_delayed_work(&video_device->switch_brightness_work, HZ / 10);
+}
+
 static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
 {
 	struct acpi_video_device *video_device = data;
@@ -1626,28 +1714,23 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
 
 	switch (event) {
 	case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS:	/* Cycle brightness */
-		if (brightness_switch_enabled)
-			acpi_video_switch_brightness(video_device, event);
+		brightness_switch_event(video_device, event);
 		keycode = KEY_BRIGHTNESS_CYCLE;
 		break;
 	case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS:	/* Increase brightness */
-		if (brightness_switch_enabled)
-			acpi_video_switch_brightness(video_device, event);
+		brightness_switch_event(video_device, event);
 		keycode = KEY_BRIGHTNESSUP;
 		break;
 	case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS:	/* Decrease brightness */
-		if (brightness_switch_enabled)
-			acpi_video_switch_brightness(video_device, event);
+		brightness_switch_event(video_device, event);
 		keycode = KEY_BRIGHTNESSDOWN;
 		break;
 	case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS:	/* zero brightness */
-		if (brightness_switch_enabled)
-			acpi_video_switch_brightness(video_device, event);
+		brightness_switch_event(video_device, event);
 		keycode = KEY_BRIGHTNESS_ZERO;
 		break;
 	case ACPI_VIDEO_NOTIFY_DISPLAY_OFF:	/* display device off */
-		if (brightness_switch_enabled)
-			acpi_video_switch_brightness(video_device, event);
+		brightness_switch_event(video_device, event);
 		keycode = KEY_DISPLAY_OFF;
 		break;
 	default: