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V4L/DVB (12242): mt9v011: implement core->s_config to allow adjusting xtal frequency 

Since frames per second is a function of cristal frequency, and this is
device-specific, add a function that allows adjusting it, via
subdev->core->s_config callback.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2009-07-14 03:14:21 -03:00
parent c180604a87
commit 2ea472ff70
1 changed files with 17 additions and 0 deletions
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17
drivers/media/video/mt9v011.c
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@ -340,6 +340,22 @@ static int mt9v011_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
return 0;
}
static int mt9v011_s_config(struct v4l2_subdev *sd, int dumb, void *data)
{
struct mt9v011 *core = to_mt9v011(sd);
unsigned *xtal = data;
v4l2_dbg(1, debug, sd, "s_config called\n");
if (xtal) {
core->xtal = *xtal;
v4l2_dbg(1, debug, sd, "xtal set to %d.%03d MHz\n",
*xtal / 1000000, (*xtal / 1000) % 1000);
}
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int mt9v011_g_register(struct v4l2_subdev *sd,
@ -388,6 +404,7 @@ static const struct v4l2_subdev_core_ops mt9v011_core_ops = {
.g_ctrl = mt9v011_g_ctrl,
.s_ctrl = mt9v011_s_ctrl,
.reset = mt9v011_reset,
.s_config = mt9v011_s_config,
.g_chip_ident = mt9v011_g_chip_ident,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = mt9v011_g_register,