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[media] mt9v032: Export horizontal and vertical blanking as V4L2 controls 

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2012-07-23 15:03:34 -03:00 committed by Mauro Carvalho Chehab
parent e9a50e4c2d
commit 9ec670e2aa
1 changed files with 32 additions and 3 deletions
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35
drivers/media/i2c/mt9v032.c
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@ -52,9 +52,11 @@
#define MT9V032_WINDOW_WIDTH_MAX 752
#define MT9V032_HORIZONTAL_BLANKING 0x05
#define MT9V032_HORIZONTAL_BLANKING_MIN 43
#define MT9V032_HORIZONTAL_BLANKING_DEF 94
#define MT9V032_HORIZONTAL_BLANKING_MAX 1023
#define MT9V032_VERTICAL_BLANKING 0x06
#define MT9V032_VERTICAL_BLANKING_MIN 4
#define MT9V032_VERTICAL_BLANKING_DEF 45
#define MT9V032_VERTICAL_BLANKING_MAX 3000
#define MT9V032_CHIP_CONTROL 0x07
#define MT9V032_CHIP_CONTROL_MASTER_MODE (1 << 3)
@ -138,6 +140,7 @@ struct mt9v032 {
u32 sysclk;
u16 chip_control;
u16 aec_agc;
u16 hblank;
};
static struct mt9v032 *to_mt9v032(struct v4l2_subdev *sd)
@ -195,6 +198,16 @@ mt9v032_update_aec_agc(struct mt9v032 *mt9v032, u16 which, int enable)
return 0;
}
static int
mt9v032_update_hblank(struct mt9v032 *mt9v032)
{
struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
struct v4l2_rect *crop = &mt9v032->crop;
return mt9v032_write(client, MT9V032_HORIZONTAL_BLANKING,
max_t(s32, mt9v032->hblank, 660 - crop->width));
}
#define EXT_CLK 25000000
static int mt9v032_power_on(struct mt9v032 *mt9v032)
@ -329,8 +342,7 @@ static int mt9v032_s_stream(struct v4l2_subdev *subdev, int enable)
if (ret < 0)
return ret;
ret = mt9v032_write(client, MT9V032_HORIZONTAL_BLANKING,
max(43, 660 - crop->width));
ret = mt9v032_update_hblank(mt9v032);
if (ret < 0)
return ret;
@ -514,6 +526,14 @@ static int mt9v032_s_ctrl(struct v4l2_ctrl *ctrl)
return mt9v032_write(client, MT9V032_TOTAL_SHUTTER_WIDTH,
ctrl->val);
case V4L2_CID_HBLANK:
mt9v032->hblank = ctrl->val;
return mt9v032_update_hblank(mt9v032);
case V4L2_CID_VBLANK:
return mt9v032_write(client, MT9V032_VERTICAL_BLANKING,
ctrl->val);
case V4L2_CID_PIXEL_RATE:
case V4L2_CID_LINK_FREQ:
if (mt9v032->link_freq == NULL)
@ -721,7 +741,7 @@ static int mt9v032_probe(struct i2c_client *client,
mutex_init(&mt9v032->power_lock);
mt9v032->pdata = pdata;
v4l2_ctrl_handler_init(&mt9v032->ctrls, ARRAY_SIZE(mt9v032_ctrls) + 6);
v4l2_ctrl_handler_init(&mt9v032->ctrls, ARRAY_SIZE(mt9v032_ctrls) + 8);
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
@ -735,6 +755,14 @@ static int mt9v032_probe(struct i2c_client *client,
V4L2_CID_EXPOSURE, MT9V032_TOTAL_SHUTTER_WIDTH_MIN,
MT9V032_TOTAL_SHUTTER_WIDTH_MAX, 1,
MT9V032_TOTAL_SHUTTER_WIDTH_DEF);
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
V4L2_CID_HBLANK, MT9V032_HORIZONTAL_BLANKING_MIN,
MT9V032_HORIZONTAL_BLANKING_MAX, 1,
MT9V032_HORIZONTAL_BLANKING_DEF);
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
V4L2_CID_VBLANK, MT9V032_VERTICAL_BLANKING_MIN,
MT9V032_VERTICAL_BLANKING_MAX, 1,
MT9V032_VERTICAL_BLANKING_DEF);
mt9v032->pixel_rate =
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
@ -777,6 +805,7 @@ static int mt9v032_probe(struct i2c_client *client,
mt9v032->format.colorspace = V4L2_COLORSPACE_SRGB;
mt9v032->aec_agc = MT9V032_AEC_ENABLE | MT9V032_AGC_ENABLE;
mt9v032->hblank = MT9V032_HORIZONTAL_BLANKING_DEF;
mt9v032->sysclk = MT9V032_SYSCLK_FREQ_DEF;
v4l2_i2c_subdev_init(&mt9v032->subdev, client, &mt9v032_subdev_ops);