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V4L/DVB (13669): tw9910: Add sync polarity support 

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Kuninori Morimoto 2009-12-11 11:53:55 -03:00 committed by Mauro Carvalho Chehab
parent c1d7b06cc3
commit 70da92e574
1 changed files with 12 additions and 2 deletions
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14
drivers/media/video/tw9910.c
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@ -512,12 +512,21 @@ static int tw9910_set_bus_param(struct soc_camera_device *icd,
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct i2c_client *client = sd->priv;
u8 val = VSSL_VVALID | HSSL_DVALID;
/*
* set OUTCTR1
*
* We use VVALID and DVALID signals to control VSYNC and HSYNC
* outputs, in this mode their polarity is inverted.
*/
return i2c_smbus_write_byte_data(client, OUTCTR1,
VSSL_VVALID | HSSL_DVALID);
if (flags & SOCAM_HSYNC_ACTIVE_LOW)
val |= HSP_HI;
if (flags & SOCAM_VSYNC_ACTIVE_LOW)
val |= VSP_HI;
return i2c_smbus_write_byte_data(client, OUTCTR1, val);
}
static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
@ -527,6 +536,7 @@ static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
struct soc_camera_link *icl = to_soc_camera_link(icd);
unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
SOCAM_VSYNC_ACTIVE_LOW | SOCAM_HSYNC_ACTIVE_LOW |
SOCAM_DATA_ACTIVE_HIGH | priv->info->buswidth;
return soc_camera_apply_sensor_flags(icl, flags);