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Merge branch 'video' into release 

Conflicts:
	Documentation/kernel-parameters.txt

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2008-11-11 21:15:50 -05:00
parent 9b5a56ddfd 2dba1b5d87
commit f398778aa3
16 changed files with 469 additions and 84 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
Documentation/kernel-parameters.txt
View File

@ -198,6 +198,18 @@ and is between 256 and 4096 characters. It is defined in the file
that require a timer override, but don't have
HPET
acpi_backlight= [HW,ACPI]
acpi_backlight=vendor
acpi_backlight=video
If set to vendor, prefer vendor specific driver
(e.g. thinkpad_acpi, sony_acpi, etc.) instead
of the ACPI video.ko driver.
acpi_display_output= [HW,ACPI]
acpi_display_output=vendor
acpi_display_output=video
See above.
acpi.debug_layer= [HW,ACPI,ACPI_DEBUG]
acpi.debug_level= [HW,ACPI,ACPI_DEBUG]
Format: <int>

4
drivers/acpi/Makefile
View File

@ -46,6 +46,10 @@ obj-$(CONFIG_ACPI_BUTTON) += button.o
obj-$(CONFIG_ACPI_FAN) += fan.o
obj-$(CONFIG_ACPI_DOCK) += dock.o
obj-$(CONFIG_ACPI_VIDEO) += video.o
ifdef CONFIG_ACPI_VIDEO
obj-y += video_detect.o
endif
obj-y += pci_root.o pci_link.o pci_irq.o pci_bind.o
obj-$(CONFIG_ACPI_PCI_SLOT) += pci_slot.o
obj-$(CONFIG_ACPI_PROCESSOR) += processor.o

40
drivers/acpi/glue.c
View File

@ -140,6 +140,46 @@ struct device *acpi_get_physical_device(acpi_handle handle)
EXPORT_SYMBOL(acpi_get_physical_device);
/* ToDo: When a PCI bridge is found, return the PCI device behind the bridge
* This should work in general, but did not on a Lenovo T61 for the
* graphics card. But this must be fixed when the PCI device is
* bound and the kernel device struct is attached to the acpi device
* Note: A success call will increase reference count by one
* Do call put_device(dev) on the returned device then
*/
struct device *acpi_get_physical_pci_device(acpi_handle handle)
{
struct device *dev;
long long device_id;
acpi_status status;
status =
acpi_evaluate_integer(handle, "_ADR", NULL, &device_id);
if (ACPI_FAILURE(status))
return NULL;
/* We need to attempt to determine whether the _ADR refers to a
PCI device or not. There's no terribly good way to do this,
so the best we can hope for is to assume that there'll never
be a device in the host bridge */
if (device_id >= 0x10000) {
/* It looks like a PCI device. Does it exist? */
dev = acpi_get_physical_device(handle);
} else {
/* It doesn't look like a PCI device. Does its parent
exist? */
acpi_handle phandle;
if (acpi_get_parent(handle, &phandle))
return NULL;
dev = acpi_get_physical_device(phandle);
}
if (!dev)
return NULL;
return dev;
}
EXPORT_SYMBOL(acpi_get_physical_pci_device);
static int acpi_bind_one(struct device *dev, acpi_handle handle)
{
struct acpi_device *acpi_dev;

32
drivers/acpi/scan.c
View File

@ -919,36 +919,6 @@ static void acpi_device_get_busid(struct acpi_device *device,
}
}
static int
acpi_video_bus_match(struct acpi_device *device)
{
acpi_handle h_dummy;
if (!device)
return -EINVAL;
/* Since there is no HID, CID for ACPI Video drivers, we have
* to check well known required nodes for each feature we support.
*/
/* Does this device able to support video switching ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy)))
return 0;
/* Does this device able to retrieve a video ROM ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy)))
return 0;
/* Does this device able to configure which video head to be POSTed ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy)))
return 0;
return -ENODEV;
}
/*
* acpi_bay_match - see if a device is an ejectable driver bay
*
@ -1031,7 +1001,7 @@ static void acpi_device_set_id(struct acpi_device *device,
will get autoloaded and the device might still match
against another driver.
*/
if (ACPI_SUCCESS(acpi_video_bus_match(device)))
if (acpi_is_video_device(device))
cid_add = ACPI_VIDEO_HID;
else if (ACPI_SUCCESS(acpi_bay_match(device)))
cid_add = ACPI_BAY_HID;

35
drivers/acpi/video.c
View File

@ -738,7 +738,8 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
device->cap._DSS = 1;
}
max_level = acpi_video_init_brightness(device);
if (acpi_video_backlight_support())
max_level = acpi_video_init_brightness(device);
if (device->cap._BCL && device->cap._BCM && max_level > 0) {
int result;
@ -784,18 +785,21 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
printk(KERN_ERR PREFIX "Create sysfs link\n");
}
if (device->cap._DCS && device->cap._DSS){
static int count = 0;
char *name;
name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
if (!name)
return;
sprintf(name, "acpi_video%d", count++);
device->output_dev = video_output_register(name,
NULL, device, &acpi_output_properties);
kfree(name);
if (acpi_video_display_switch_support()) {
if (device->cap._DCS && device->cap._DSS) {
static int count;
char *name;
name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
if (!name)
return;
sprintf(name, "acpi_video%d", count++);
device->output_dev = video_output_register(name,
NULL, device, &acpi_output_properties);
kfree(name);
}
}
return;
}
/*
@ -841,11 +845,16 @@ static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
static int acpi_video_bus_check(struct acpi_video_bus *video)
{
acpi_status status = -ENOENT;
struct device *dev;
if (!video)
return -EINVAL;
dev = acpi_get_physical_pci_device(video->device->handle);
if (!dev)
return -ENODEV;
put_device(dev);
/* Since there is no HID, CID and so on for VGA driver, we have
* to check well known required nodes.
*/

267
drivers/acpi/video_detect.c Normal file
View File

@ -0,0 +1,267 @@
/*
* Copyright (C) 2008 SuSE Linux Products GmbH
* Thomas Renninger <trenn@suse.de>
*
* May be copied or modified under the terms of the GNU General Public License
*
* video_detect.c:
* Provides acpi_is_video_device() for early scanning of ACPI devices in scan.c
* There a Linux specific (Spec does not provide a HID for video devices) is
* assinged
*
* After PCI devices are glued with ACPI devices
* acpi_get_physical_pci_device() can be called to identify ACPI graphics
* devices for which a real graphics card is plugged in
*
* Now acpi_video_get_capabilities() can be called to check which
* capabilities the graphics cards plugged in support. The check for general
* video capabilities will be triggered by the first caller of
* acpi_video_get_capabilities(NULL); which will happen when the first
* backlight (or display output) switching supporting driver calls:
* acpi_video_backlight_support();
*
* Depending on whether ACPI graphics extensions (cmp. ACPI spec Appendix B)
* are available, video.ko should be used to handle the device.
*
* Otherwise vendor specific drivers like thinkpad_acpi, asus_acpi,
* sony_acpi,... can take care about backlight brightness and display output
* switching.
*
* If CONFIG_ACPI_VIDEO is neither set as "compiled in" (y) nor as a module (m)
* this file will not be compiled, acpi_video_get_capabilities() and
* acpi_video_backlight_support() will always return 0 and vendor specific
* drivers always can handle backlight.
*
*/
#include <linux/acpi.h>
#include <linux/dmi.h>
ACPI_MODULE_NAME("video");
#define _COMPONENT ACPI_VIDEO_COMPONENT
static long acpi_video_support;
static bool acpi_video_caps_checked;
static acpi_status
acpi_backlight_cap_match(acpi_handle handle, u32 level, void *context,
void **retyurn_value)
{
long *cap = context;
acpi_handle h_dummy;
if (ACPI_SUCCESS(acpi_get_handle(handle, "_BCM", &h_dummy)) &&
ACPI_SUCCESS(acpi_get_handle(handle, "_BCL", &h_dummy))) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found generic backlight "
"support\n"));
*cap |= ACPI_VIDEO_BACKLIGHT;
/* We have backlight support, no need to scan further */
return AE_CTRL_TERMINATE;
}
return 0;
}
/* Returns true if the device is a video device which can be handled by
* video.ko.
* The device will get a Linux specific CID added in scan.c to
* identify the device as an ACPI graphics device
* Be aware that the graphics device may not be physically present
* Use acpi_video_get_capabilities() to detect general ACPI video
* capabilities of present cards
*/
long acpi_is_video_device(struct acpi_device *device)
{
acpi_handle h_dummy;
long video_caps = 0;
if (!device)
return 0;
/* Does this device able to support video switching ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy)))
video_caps |= ACPI_VIDEO_OUTPUT_SWITCHING;
/* Does this device able to retrieve a video ROM ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy)))
video_caps |= ACPI_VIDEO_ROM_AVAILABLE;
/* Does this device able to configure which video head to be POSTed ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy)))
video_caps |= ACPI_VIDEO_DEVICE_POSTING;
/* Only check for backlight functionality if one of the above hit. */
if (video_caps)
acpi_walk_namespace(ACPI_TYPE_DEVICE, device->handle,
ACPI_UINT32_MAX, acpi_backlight_cap_match,
&video_caps, NULL);
return video_caps;
}
EXPORT_SYMBOL(acpi_is_video_device);
static acpi_status
find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
{
long *cap = context;
struct device *dev;
struct acpi_device *acpi_dev;
const struct acpi_device_id video_ids[] = {
{ACPI_VIDEO_HID, 0},
{"", 0},
};
if (acpi_bus_get_device(handle, &acpi_dev))
return AE_OK;
if (!acpi_match_device_ids(acpi_dev, video_ids)) {
dev = acpi_get_physical_pci_device(handle);
if (!dev)
return AE_OK;
put_device(dev);
*cap |= acpi_is_video_device(acpi_dev);
}
return AE_OK;
}
/*
* Returns the video capabilities of a specific ACPI graphics device
*
* if NULL is passed as argument all ACPI devices are enumerated and
* all graphics capabilities of physically present devices are
* summerized and returned. This is cached and done only once.
*/
long acpi_video_get_capabilities(acpi_handle graphics_handle)
{
long caps = 0;
struct acpi_device *tmp_dev;
acpi_status status;
if (acpi_video_caps_checked && graphics_handle == NULL)
return acpi_video_support;
if (!graphics_handle) {
/* Only do the global walk through all graphics devices once */
acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, find_video,
&caps, NULL);
/* There might be boot param flags set already... */
acpi_video_support |= caps;
acpi_video_caps_checked = 1;
/* Add blacklists here. Be careful to use the right *DMI* bits
* to still be able to override logic via boot params, e.g.:
*
* if (dmi_name_in_vendors("XY")) {
* acpi_video_support |=
* ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR;
* acpi_video_support |=
* ACPI_VIDEO_BACKLIGHT_DMI_VENDOR;
*}
*/
} else {
status = acpi_bus_get_device(graphics_handle, &tmp_dev);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Invalid device"));
return 0;
}
acpi_walk_namespace(ACPI_TYPE_DEVICE, graphics_handle,
ACPI_UINT32_MAX, find_video,
&caps, NULL);
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "We have 0x%lX video support %s %s\n",
graphics_handle ? caps : acpi_video_support,
graphics_handle ? "on device " : "in general",
graphics_handle ? acpi_device_bid(tmp_dev) : ""));
return caps;
}
EXPORT_SYMBOL(acpi_video_get_capabilities);
/* Returns true if video.ko can do backlight switching */
int acpi_video_backlight_support(void)
{
/*
* We must check whether the ACPI graphics device is physically plugged
* in. Therefore this must be called after binding PCI and ACPI devices
*/
if (!acpi_video_caps_checked)
acpi_video_get_capabilities(NULL);
/* First check for boot param -> highest prio */
if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR)
return 0;
else if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO)
return 1;
/* Then check for DMI blacklist -> second highest prio */
if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_DMI_VENDOR)
return 0;
else if (acpi_video_support & ACPI_VIDEO_BACKLIGHT_DMI_VIDEO)
return 1;
/* Then go the default way */
return acpi_video_support & ACPI_VIDEO_BACKLIGHT;
}
EXPORT_SYMBOL(acpi_video_backlight_support);
/*
* Returns true if video.ko can do display output switching.
* This does not work well/at all with binary graphics drivers
* which disable system io ranges and do it on their own.
*/
int acpi_video_display_switch_support(void)
{
if (!acpi_video_caps_checked)
acpi_video_get_capabilities(NULL);
if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR)
return 0;
else if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO)
return 1;
if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR)
return 0;
else if (acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO)
return 1;
return acpi_video_support & ACPI_VIDEO_OUTPUT_SWITCHING;
}
EXPORT_SYMBOL(acpi_video_display_switch_support);
/*
* Use acpi_display_output=vendor/video or acpi_backlight=vendor/video
* To force that backlight or display output switching is processed by vendor
* specific acpi drivers or video.ko driver.
*/
int __init acpi_backlight(char *str)
{
if (str == NULL || *str == '\0')
return 1;
else {
if (!strcmp("vendor", str))
acpi_video_support |=
ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR;
if (!strcmp("video", str))
acpi_video_support |=
ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO;
}
return 1;
}
__setup("acpi_backlight=", acpi_backlight);
int __init acpi_display_output(char *str)
{
if (str == NULL || *str == '\0')
return 1;
else {
if (!strcmp("vendor", str))
acpi_video_support |=
ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR;
if (!strcmp("video", str))
acpi_video_support |=
ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO;
}
return 1;
}
__setup("acpi_display_output=", acpi_display_output);

6
drivers/misc/acer-wmi.c
View File

@ -1297,6 +1297,12 @@ static int __init acer_wmi_init(void)
set_quirks();
if (!acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
interface->capability &= ~ACER_CAP_BRIGHTNESS;
printk(ACER_INFO "Brightness must be controlled by "
"generic video driver\n");
}
if (platform_driver_register(&acer_platform_driver)) {
printk(ACER_ERR "Unable to register platform driver.\n");
goto error_platform_register;

10
drivers/misc/asus-laptop.c
View File

@ -1208,9 +1208,13 @@ static int __init asus_laptop_init(void)
dev = acpi_get_physical_device(hotk->device->handle);
result = asus_backlight_init(dev);
if (result)
goto fail_backlight;
if (!acpi_video_backlight_support()) {
result = asus_backlight_init(dev);
if (result)
goto fail_backlight;
} else
printk(ASUS_INFO "Brightness ignored, must be controlled by "
"ACPI video driver\n");
result = asus_led_init(dev);
if (result)

12
drivers/misc/compal-laptop.c
View File

@ -326,12 +326,14 @@ static int __init compal_init(void)
/* Register backlight stuff */
compalbl_device = backlight_device_register("compal-laptop", NULL, NULL,
&compalbl_ops);
if (IS_ERR(compalbl_device))
return PTR_ERR(compalbl_device);
if (!acpi_video_backlight_support()) {
compalbl_device = backlight_device_register("compal-laptop", NULL, NULL,
&compalbl_ops);
if (IS_ERR(compalbl_device))
return PTR_ERR(compalbl_device);
compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1;
compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1;
}
ret = platform_driver_register(&compal_driver);
if (ret)

12
drivers/misc/eeepc-laptop.c
View File

@ -825,9 +825,15 @@ static int __init eeepc_laptop_init(void)
return -ENODEV;
}
dev = acpi_get_physical_device(ehotk->device->handle);
result = eeepc_backlight_init(dev);
if (result)
goto fail_backlight;
if (!acpi_video_backlight_support()) {
result = eeepc_backlight_init(dev);
if (result)
goto fail_backlight;
} else
printk(EEEPC_INFO "Backlight controlled by ACPI video "
"driver\n");
result = eeepc_hwmon_init(dev);
if (result)
goto fail_hwmon;

26
drivers/misc/fujitsu-laptop.c
View File

@ -1005,16 +1005,16 @@ static int __init fujitsu_init(void)
/* Register backlight stuff */
fujitsu->bl_device =
backlight_device_register("fujitsu-laptop", NULL, NULL,
&fujitsubl_ops);
if (IS_ERR(fujitsu->bl_device))
return PTR_ERR(fujitsu->bl_device);
max_brightness = fujitsu->max_brightness;
fujitsu->bl_device->props.max_brightness = max_brightness - 1;
fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
if (!acpi_video_backlight_support()) {
fujitsu->bl_device =
backlight_device_register("fujitsu-laptop", NULL, NULL,
&fujitsubl_ops);
if (IS_ERR(fujitsu->bl_device))
return PTR_ERR(fujitsu->bl_device);
max_brightness = fujitsu->max_brightness;
fujitsu->bl_device->props.max_brightness = max_brightness - 1;
fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
}
ret = platform_driver_register(&fujitsupf_driver);
if (ret)
@ -1050,7 +1050,8 @@ fail_hotkey:
fail_backlight:
backlight_device_unregister(fujitsu->bl_device);
if (fujitsu->bl_device)
backlight_device_unregister(fujitsu->bl_device);
fail_platform_device2:
@ -1077,7 +1078,8 @@ static void __exit fujitsu_cleanup(void)
&fujitsupf_attribute_group);
platform_device_unregister(fujitsu->pf_device);
platform_driver_unregister(&fujitsupf_driver);
backlight_device_unregister(fujitsu->bl_device);
if (fujitsu->bl_device)
backlight_device_unregister(fujitsu->bl_device);
acpi_bus_unregister_driver(&acpi_fujitsu_driver);

16
drivers/misc/msi-laptop.c
View File

@ -347,12 +347,16 @@ static int __init msi_init(void)
/* Register backlight stuff */
msibl_device = backlight_device_register("msi-laptop-bl", NULL, NULL,
&msibl_ops);
if (IS_ERR(msibl_device))
return PTR_ERR(msibl_device);
msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1;
if (acpi_video_backlight_support()) {
printk(KERN_INFO "MSI: Brightness ignored, must be controlled "
"by ACPI video driver\n");
} else {
msibl_device = backlight_device_register("msi-laptop-bl", NULL,
NULL, &msibl_ops);
if (IS_ERR(msibl_device))
return PTR_ERR(msibl_device);
msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1;
}
ret = platform_driver_register(&msipf_driver);
if (ret)

6
drivers/misc/sony-laptop.c
View File

@ -1038,7 +1038,11 @@ static int sony_nc_add(struct acpi_device *device)
goto outinput;
}
if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT", &handle))) {
if (!acpi_video_backlight_support()) {
printk(KERN_INFO DRV_PFX "Sony: Brightness ignored, must be "
"controlled by ACPI video driver\n");
} else if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT",
&handle))) {
sony_backlight_device = backlight_device_register("sony", NULL,
NULL,
&sony_backlight_ops);

29
drivers/misc/thinkpad_acpi.c
View File

@ -4932,16 +4932,25 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
*/
b = tpacpi_check_std_acpi_brightness_support();
if (b > 0) {
if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
printk(TPACPI_NOTICE
"Lenovo BIOS switched to ACPI backlight "
"control mode\n");
}
if (brightness_enable > 1) {
printk(TPACPI_NOTICE
"standard ACPI backlight interface "
"available, not loading native one...\n");
return 1;
if (acpi_video_backlight_support()) {
if (brightness_enable > 1) {
printk(TPACPI_NOTICE
"Standard ACPI backlight interface "
"available, not loading native one.\n");
return 1;
} else if (brightness_enable == 1) {
printk(TPACPI_NOTICE
"Backlight control force enabled, even if standard "
"ACPI backlight interface is available\n");
}
} else {
if (brightness_enable > 1) {
printk(TPACPI_NOTICE
"Standard ACPI backlight interface not "
"available, thinkpad_acpi native "
"brightness control enabled\n");
}
}
}

2
include/acpi/acpi_bus.h
View File

@ -380,6 +380,8 @@ struct acpi_bus_type {
int register_acpi_bus_type(struct acpi_bus_type *);
int unregister_acpi_bus_type(struct acpi_bus_type *);
struct device *acpi_get_physical_device(acpi_handle);
struct device *acpi_get_physical_pci_device(acpi_handle);
/* helper */
acpi_handle acpi_get_child(acpi_handle, acpi_integer);
acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);

44
include/linux/acpi.h
View File

@ -190,6 +190,50 @@ extern bool wmi_has_guid(const char *guid);
#endif /* CONFIG_ACPI_WMI */
#define ACPI_VIDEO_OUTPUT_SWITCHING 0x0001
#define ACPI_VIDEO_DEVICE_POSTING 0x0002
#define ACPI_VIDEO_ROM_AVAILABLE 0x0004
#define ACPI_VIDEO_BACKLIGHT 0x0008
#define ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR 0x0010
#define ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO 0x0020
#define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR 0x0040
#define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO 0x0080
#define ACPI_VIDEO_BACKLIGHT_DMI_VENDOR 0x0100
#define ACPI_VIDEO_BACKLIGHT_DMI_VIDEO 0x0200
#define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR 0x0400
#define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO 0x0800
#if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE)
extern long acpi_video_get_capabilities(acpi_handle graphics_dev_handle);
extern long acpi_is_video_device(struct acpi_device *device);
extern int acpi_video_backlight_support(void);
extern int acpi_video_display_switch_support(void);
#else
static inline long acpi_video_get_capabilities(acpi_handle graphics_dev_handle)
{
return 0;
}
static inline long acpi_is_video_device(struct acpi_device *device)
{
return 0;
}
static inline int acpi_video_backlight_support(void)
{
return 0;
}
static inline int acpi_video_display_switch_support(void)
{
return 0;
}
#endif /* defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) */
extern int acpi_blacklisted(void);
#ifdef CONFIG_DMI
extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);