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[media] tw9910: init priv->scale and update standard

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When the standard changes the VACTIVE and VDELAY values need to be updated.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil 2015-06-15 08:33:31 -03:00 committed by Mauro Carvalho Chehab
parent 9212e1d872
commit 1f3375e0b2
1 changed files with 28 additions and 1 deletions
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29
drivers/media/i2c/soc_camera/tw9910.c
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@ -510,13 +510,39 @@ static int tw9910_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct tw9910_priv *priv = to_tw9910(client);
const unsigned hact = 720;
const unsigned hdelay = 15;
unsigned vact;
unsigned vdelay;
int ret;
if (!(norm & (V4L2_STD_NTSC | V4L2_STD_PAL)))
return -EINVAL;
priv->norm = norm;
if (norm & V4L2_STD_525_60) {
vact = 240;
vdelay = 18;
ret = tw9910_mask_set(client, VVBI, 0x10, 0x10);
} else {
vact = 288;
vdelay = 24;
ret = tw9910_mask_set(client, VVBI, 0x10, 0x00);
}
if (!ret)
ret = i2c_smbus_write_byte_data(client, CROP_HI,
((vdelay >> 2) & 0xc0) |
((vact >> 4) & 0x30) |
((hdelay >> 6) & 0x0c) |
((hact >> 8) & 0x03));
if (!ret)
ret = i2c_smbus_write_byte_data(client, VDELAY_LO,
vdelay & 0xff);
if (!ret)
ret = i2c_smbus_write_byte_data(client, VACTIVE_LO,
vact & 0xff);
return 0;
return ret;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
@ -820,6 +846,7 @@ static int tw9910_video_probe(struct i2c_client *client)
"tw9910 Product ID %0x:%0x\n", id, priv->revision);
priv->norm = V4L2_STD_NTSC;
priv->scale = &tw9910_ntsc_scales[0];
done:
tw9910_s_power(&priv->subdev, 0);