提交 82cae999 编写于 作者: R Rui Zhang 提交者: Len Brown

ACPI: video: fix LCD monitor seen as CRT

http://bugzilla.kernel.org/show_bug.cgi?id=7349Signed-off-by: NLen Brown <len.brown@intel.com>
上级 7523c4dd
......@@ -57,6 +57,11 @@
#define ACPI_VIDEO_HEAD_INVALID (~0u - 1)
#define ACPI_VIDEO_HEAD_END (~0u)
#define ACPI_VIDEO_DISPLAY_CRT 1
#define ACPI_VIDEO_DISPLAY_TV 2
#define ACPI_VIDEO_DISPLAY_DVI 3
#define ACPI_VIDEO_DISPLAY_LCD 4
#define _COMPONENT ACPI_VIDEO_COMPONENT
ACPI_MODULE_NAME("acpi_video")
......@@ -133,9 +138,10 @@ struct acpi_video_device_flags {
u8 crt:1;
u8 lcd:1;
u8 tvout:1;
u8 dvi:1;
u8 bios:1;
u8 unknown:1;
u8 reserved:3;
u8 reserved:2;
};
struct acpi_video_device_cap {
......@@ -668,6 +674,8 @@ static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset)
seq_printf(seq, "LCD\n");
else if (dev->flags.tvout)
seq_printf(seq, "TVOUT\n");
else if (dev->flags.dvi)
seq_printf(seq, "DVI\n");
else
seq_printf(seq, "UNKNOWN\n");
......@@ -1242,6 +1250,16 @@ static int acpi_video_bus_remove_fs(struct acpi_device *device)
-------------------------------------------------------------------------- */
/* device interface */
static struct acpi_video_device_attrib*
acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id)
{
int count;
for(count = 0; count < video->attached_count; count++)
if((video->attached_array[count].value.int_val & 0xffff) == device_id)
return &(video->attached_array[count].value.attrib);
return NULL;
}
static int
acpi_video_bus_get_one_device(struct acpi_device *device,
......@@ -1250,7 +1268,7 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
unsigned long device_id;
int status;
struct acpi_video_device *data;
struct acpi_video_device_attrib* attribute;
if (!device || !video)
return -EINVAL;
......@@ -1271,20 +1289,30 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
data->video = video;
data->dev = device;
switch (device_id & 0xffff) {
case 0x0100:
attribute = acpi_video_get_device_attr(video, device_id);
if((attribute != NULL) && attribute->device_id_scheme) {
switch (attribute->display_type) {
case ACPI_VIDEO_DISPLAY_CRT:
data->flags.crt = 1;
break;
case 0x0400:
data->flags.lcd = 1;
break;
case 0x0200:
case ACPI_VIDEO_DISPLAY_TV:
data->flags.tvout = 1;
break;
case ACPI_VIDEO_DISPLAY_DVI:
data->flags.dvi = 1;
break;
case ACPI_VIDEO_DISPLAY_LCD:
data->flags.lcd = 1;
break;
default:
data->flags.unknown = 1;
break;
}
if(attribute->bios_can_detect)
data->flags.bios = 1;
} else
data->flags.unknown = 1;
acpi_video_device_bind(video, data);
acpi_video_device_find_cap(data);
......
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