2 files changed, 4 insertions, 139 deletions

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 5cd0228d2daa..81766ebec843 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -33,7 +33,6 @@
 #include <linux/input.h>
 #include <linux/backlight.h>
 #include <linux/thermal.h>
-#include <linux/video_output.h>
 #include <linux/sort.h>
 #include <linux/pci.h>
 #include <linux/pci_ids.h>
@@ -172,9 +171,6 @@ struct acpi_video_device_cap {
         u8 _BQC:1;              /* Get current brightness level */
         u8 _BCQ:1;              /* Some buggy BIOS uses _BCQ instead of _BQC */
         u8 _DDC:1;              /*Return the EDID for this device */
-        u8 _DCS:1;              /*Return status of output device */
-        u8 _DGS:1;              /*Query graphics state */
-        u8 _DSS:1;              /*Device state set */
 };
 
 struct acpi_video_brightness_flags {
@@ -202,7 +198,6 @@ struct acpi_video_device {
         struct acpi_video_device_brightness *brightness;
         struct backlight_device *backlight;
         struct thermal_cooling_device *cooling_dev;
-        struct output_device *output_dev;
 };
 
 static const char device_decode[][30] = {
@@ -226,10 +221,6 @@ 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 int acpi_video_device_get_state(struct acpi_video_device *device,
-                            unsigned long long *state);
-static int acpi_video_output_get(struct output_device *od);
-static int acpi_video_device_set_state(struct acpi_video_device *device, int state);
 
 /*backlight device sysfs support*/
 static int acpi_video_get_brightness(struct backlight_device *bd)
@@ -265,30 +256,6 @@ static struct backlight_ops acpi_backlight_ops = {
         .update_status  = acpi_video_set_brightness,
 };
 
-/*video output device sysfs support*/
-static int acpi_video_output_get(struct output_device *od)
-{
-        unsigned long long state;
-        struct acpi_video_device *vd =
-                (struct acpi_video_device *)dev_get_drvdata(&od->dev);
-        acpi_video_device_get_state(vd, &state);
-        return (int)state;
-}
-
-static int acpi_video_output_set(struct output_device *od)
-{
-        unsigned long state = od->request_state;
-        struct acpi_video_device *vd=
-                (struct acpi_video_device *)dev_get_drvdata(&od->dev);
-        return acpi_video_device_set_state(vd, state);
-}
-
-static struct output_properties acpi_output_properties = {
-        .set_state = acpi_video_output_set,
-        .get_status = acpi_video_output_get,
-};
-
-
 /* thermal cooling device callbacks */
 static int video_get_max_state(struct thermal_cooling_device *cooling_dev, unsigned
                                long *state)
@@ -344,34 +311,6 @@ static struct thermal_cooling_device_ops video_cooling_ops = {
                                Video Management
    -------------------------------------------------------------------------- */
 
-/* device */
-
-static int
-acpi_video_device_get_state(struct acpi_video_device *device,
-                            unsigned long long *state)
-{
-        int status;
-
-        status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state);
-
-        return status;
-}
-
-static int
-acpi_video_device_set_state(struct acpi_video_device *device, int state)
-{
-        int status;
-        union acpi_object arg0 = { ACPI_TYPE_INTEGER };
-        struct acpi_object_list args = { 1, &arg0 };
-        unsigned long long ret;
-
-
-        arg0.integer.value = state;
-        status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret);
-
-        return status;
-}
-
 static int
 acpi_video_device_lcd_query_levels(struct acpi_video_device *device,
                                    union acpi_object **levels)
@@ -831,15 +770,6 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
         if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) {
                 device->cap._DDC = 1;
         }
-        if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) {
-                device->cap._DCS = 1;
-        }
-        if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) {
-                device->cap._DGS = 1;
-        }
-        if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) {
-                device->cap._DSS = 1;
-        }
 
         if (acpi_video_backlight_support()) {
                 struct backlight_properties props;
@@ -904,21 +834,6 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
                         printk(KERN_ERR PREFIX "Create sysfs link\n");
 
         }
-
-        if (acpi_video_display_switch_support()) {
-
-                if (device->cap._DCS && device->cap._DSS) {
-                        static int count;
-                        char *name;
-                        name = kasprintf(GFP_KERNEL, "acpi_video%d", count);
-                        if (!name)
-                                return;
-                        count++;
-                        device->output_dev = video_output_register(name,
-                                        NULL, device, &acpi_output_properties);
-                        kfree(name);
-                }
-        }
 }
 
 /*
@@ -1452,7 +1367,6 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
                 thermal_cooling_device_unregister(device->cooling_dev);
                 device->cooling_dev = NULL;
         }
-        video_output_unregister(device->output_dev);
 
         return 0;
 }
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index b83676126598..42d3d72dae85 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -17,15 +17,14 @@
  * 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:
+ * backlight 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.
+ * sony_acpi,... can take care about backlight brightness.
  *
  * 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
@@ -83,11 +82,6 @@ long acpi_is_video_device(struct acpi_device *device)
         if (!device)
                 return 0;
 
-        /* Is 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;
-
         /* Is 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;
@@ -161,8 +155,6 @@ long acpi_video_get_capabilities(acpi_handle graphics_handle)
                  *
                  *   if (dmi_name_in_vendors("XY")) {
                  *      acpi_video_support |=
-                 *              ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR;
-                 *      acpi_video_support |=
                  *              ACPI_VIDEO_BACKLIGHT_DMI_VENDOR;
                  *}
                  */
@@ -212,33 +204,8 @@ int acpi_video_backlight_support(void)
 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.
+ * Use acpi_backlight=vendor/video to force that backlight switching
+ * is processed by vendor specific acpi drivers or video.ko driver.
  */
 static int __init acpi_backlight(char *str)
 {
@@ -255,19 +222,3 @@ static int __init acpi_backlight(char *str)
         return 1;
 }
 __setup("acpi_backlight=", acpi_backlight);
-
-static 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);