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authorSteven Toth <stoth@kernellabs.com>2012-01-05 04:16:15 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-01-05 12:57:32 +0400
commit51ada787b89828314f09cb6b2f401c209db88917 (patch)
tree3117d6cfaabf0c4be9030bdc6ef23583f9e4fdb0 /drivers/media/video/cx25840
parent74900b4715bb2092bf0c88dc673008935b8151d2 (diff)
downloadlinux-51ada787b89828314f09cb6b2f401c209db88917.tar.xz
[media] cx25840: Added g_std support to the video decoder driver
Making the detected video standard available to the core driver and for user query. Signed-off-by: Steven Toth <stoth@kernellabs.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx25840')
-rw-r--r--drivers/media/video/cx25840/cx25840-core.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c
index 41d2ee4e37db..4f43f4a7e72d 100644
--- a/drivers/media/video/cx25840/cx25840-core.c
+++ b/drivers/media/video/cx25840/cx25840-core.c
@@ -1705,6 +1705,41 @@ static int cx25840_s_stream(struct v4l2_subdev *sd, int enable)
return 0;
}
+/* Query the current detected video format */
+static int cx25840_g_std(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ v4l2_std_id stds[] = {
+ /* 0000 */ V4L2_STD_UNKNOWN,
+
+ /* 0001 */ V4L2_STD_NTSC_M,
+ /* 0010 */ V4L2_STD_NTSC_M_JP,
+ /* 0011 */ V4L2_STD_NTSC_443,
+ /* 0100 */ V4L2_STD_PAL,
+ /* 0101 */ V4L2_STD_PAL_M,
+ /* 0110 */ V4L2_STD_PAL_N,
+ /* 0111 */ V4L2_STD_PAL_Nc,
+ /* 1000 */ V4L2_STD_PAL_60,
+
+ /* 1001 */ V4L2_STD_UNKNOWN,
+ /* 1010 */ V4L2_STD_UNKNOWN,
+ /* 1001 */ V4L2_STD_UNKNOWN,
+ /* 1010 */ V4L2_STD_UNKNOWN,
+ /* 1011 */ V4L2_STD_UNKNOWN,
+ /* 1110 */ V4L2_STD_UNKNOWN,
+ /* 1111 */ V4L2_STD_UNKNOWN
+ };
+
+ u32 fmt = (cx25840_read4(client, 0x40c) >> 8) & 0xf;
+ *std = stds[ fmt ];
+
+ v4l_dbg(1, cx25840_debug, client, "g_std fmt = %x, v4l2_std_id = 0x%x\n",
+ fmt, (unsigned int)stds[ fmt ]);
+
+ return 0;
+}
+
static int cx25840_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct cx25840_state *state = to_state(sd);
@@ -4973,6 +5008,7 @@ static const struct v4l2_subdev_core_ops cx25840_core_ops = {
.queryctrl = v4l2_subdev_queryctrl,
.querymenu = v4l2_subdev_querymenu,
.s_std = cx25840_s_std,
+ .g_std = cx25840_g_std,
.reset = cx25840_reset,
.load_fw = cx25840_load_fw,
.s_io_pin_config = common_s_io_pin_config,