From 70da92e5740a6ab8bfe0db826c345c85e795f109 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Fri, 11 Dec 2009 11:53:55 -0300 Subject: V4L/DVB (13669): tw9910: Add sync polarity support Signed-off-by: Kuninori Morimoto Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/tw9910.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'drivers/media/video/tw9910.c') diff --git a/drivers/media/video/tw9910.c b/drivers/media/video/tw9910.c index e70905ceef4..5b801a6e1ee 100644 --- a/drivers/media/video/tw9910.c +++ b/drivers/media/video/tw9910.c @@ -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); -- cgit v1.2.3-70-g09d2