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Pull video into release branch

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This commit is contained in:
Len Brown 2007-07-22 02:28:33 -04:00
commit 5e16e3f0e2
4 changed files with 91 additions and 37 deletions
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2
drivers/acpi/Kconfig
View File

@ -118,7 +118,7 @@ config ACPI_BUTTON
config ACPI_VIDEO
tristate "Video"
depends on X86 && BACKLIGHT_CLASS_DEVICE
depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
help
This driver implement the ACPI Extensions For Display Adapters
for integrated graphics devices on motherboard, as specified in

116
drivers/acpi/video.c
View File

@ -33,6 +33,7 @@
#include <linux/seq_file.h>
#include <linux/backlight.h>
#include <linux/video_output.h>
#include <asm/uaccess.h>
#include <acpi/acpi_bus.h>
@ -169,6 +170,7 @@ struct acpi_video_device {
struct acpi_device *dev;
struct acpi_video_device_brightness *brightness;
struct backlight_device *backlight;
struct output_device *output_dev;
};
/* bus */
@ -272,6 +274,10 @@ static int acpi_video_get_next_level(struct acpi_video_device *device,
u32 level_current, u32 event);
static void 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 *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)
@ -297,6 +303,28 @@ 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 state;
struct acpi_video_device *vd =
(struct acpi_video_device *)class_get_devdata(&od->class_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 *)class_get_devdata(&od->class_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,
};
/* --------------------------------------------------------------------------
Video Management
-------------------------------------------------------------------------- */
@ -531,7 +559,6 @@ acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag)
static void acpi_video_device_find_cap(struct acpi_video_device *device)
{
acpi_integer status;
acpi_handle h_dummy1;
int i;
u32 max_level = 0;
@ -565,50 +592,55 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
device->cap._DSS = 1;
}
status = acpi_video_device_lcd_query_levels(device, &obj);
if (ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) {
if (obj && obj->type == ACPI_TYPE_PACKAGE && obj->package.count >= 2) {
int count = 0;
union acpi_object *o;
if (obj->package.count >= 2) {
int count = 0;
union acpi_object *o;
br = kzalloc(sizeof(*br), GFP_KERNEL);
if (!br) {
printk(KERN_ERR "can't allocate memory\n");
} else {
br->levels = kmalloc(obj->package.count *
sizeof *(br->levels), GFP_KERNEL);
if (!br->levels)
goto out;
for (i = 0; i < obj->package.count; i++) {
o = (union acpi_object *)&obj->package.
elements[i];
if (o->type != ACPI_TYPE_INTEGER) {
printk(KERN_ERR PREFIX "Invalid data\n");
continue;
}
br->levels[count] = (u32) o->integer.value;
if (br->levels[count] > max_level)
max_level = br->levels[count];
count++;
}
out:
if (count < 2) {
kfree(br->levels);
kfree(br);
br = kzalloc(sizeof(*br), GFP_KERNEL);
if (!br) {
printk(KERN_ERR "can't allocate memory\n");
} else {
br->count = count;
device->brightness = br;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"found %d brightness levels\n",
count));
br->levels = kmalloc(obj->package.count *
sizeof *(br->levels), GFP_KERNEL);
if (!br->levels)
goto out;
for (i = 0; i < obj->package.count; i++) {
o = (union acpi_object *)&obj->package.
elements[i];
if (o->type != ACPI_TYPE_INTEGER) {
printk(KERN_ERR PREFIX "Invalid data\n");
continue;
}
br->levels[count] = (u32) o->integer.value;
if (br->levels[count] > max_level)
max_level = br->levels[count];
count++;
}
out:
if (count < 2) {
kfree(br->levels);
kfree(br);
} else {
br->count = count;
device->brightness = br;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"found %d brightness levels\n",
count));
}
}
}
} else {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available LCD brightness level\n"));
}
kfree(obj);
if (device->cap._BCL && device->cap._BCM && device->cap._BQC){
if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){
unsigned long tmp;
static int count = 0;
char *name;
@ -626,6 +658,17 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
kfree(name);
}
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);
}
return;
}
@ -1669,6 +1712,7 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
ACPI_DEVICE_NOTIFY,
acpi_video_device_notify);
backlight_device_unregister(device->backlight);
video_output_unregister(device->output_dev);
return 0;
}

7
drivers/video/Kconfig
View File

@ -12,6 +12,13 @@ config VGASTATE
tristate
default n
config VIDEO_OUTPUT_CONTROL
tristate "Lowlevel video output switch controls"
default m
help
This framework adds support for low-level control of the video
output switch.
config FB
tristate "Support for frame buffer devices"
---help---

3
drivers/video/Makefile
View File

@ -123,3 +123,6 @@ obj-$(CONFIG_FB_OF) += offb.o
# the test framebuffer is last
obj-$(CONFIG_FB_VIRTUAL) += vfb.o
#video output switch sysfs driver
obj-$(CONFIG_VIDEO_OUTPUT_CONTROL) += output.o