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[media] adv7180: Consolidate video mode setting 

We have basically the same code to set the video standard in init_device()
and adv7180_s_std(). Factor this out into a common helper function.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Federico Vaga <federico.vaga@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Lars-Peter Clausen 2015-01-23 12:52:27 -03:00 committed by Mauro Carvalho Chehab
parent d5d51a827b
commit 3e35e33c08
1 changed files with 33 additions and 36 deletions
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69
drivers/media/i2c/adv7180.c
View File

@ -302,37 +302,54 @@ static int adv7180_g_input_status(struct v4l2_subdev *sd, u32 *status)
return ret;
}
static int adv7180_program_std(struct adv7180_state *state)
{
int ret;
if (state->autodetect) {
ret = adv7180_write(state, ADV7180_REG_INPUT_CONTROL,
ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM
| state->input);
if (ret < 0)
return ret;
__adv7180_status(state, NULL, &state->curr_norm);
} else {
ret = v4l2_std_to_adv7180(state->curr_norm);
if (ret < 0)
return ret;
ret = adv7180_write(state, ADV7180_REG_INPUT_CONTROL,
ret | state->input);
if (ret < 0)
return ret;
}
return 0;
}
static int adv7180_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct adv7180_state *state = to_state(sd);
int ret = mutex_lock_interruptible(&state->mutex);
if (ret)
return ret;
/* all standards -> autodetect */
if (std == V4L2_STD_ALL) {
ret = adv7180_write(state, ADV7180_REG_INPUT_CONTROL,
ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM
| state->input);
if (ret < 0)
goto out;
__adv7180_status(state, NULL, &state->curr_norm);
state->autodetect = true;
} else {
/* Make sure we can support this std */
ret = v4l2_std_to_adv7180(std);
if (ret < 0)
goto out;
ret = adv7180_write(state, ADV7180_REG_INPUT_CONTROL,
ret | state->input);
if (ret < 0)
goto out;
state->curr_norm = std;
state->autodetect = false;
}
ret = 0;
ret = adv7180_program_std(state);
out:
mutex_unlock(&state->mutex);
return ret;
@ -546,30 +563,10 @@ static int init_device(struct adv7180_state *state)
adv7180_write(state, ADV7180_REG_PWR_MAN, ADV7180_PWR_MAN_RES);
usleep_range(2000, 10000);
/* Initialize adv7180 */
/* Enable autodetection */
if (state->autodetect) {
ret = adv7180_write(state, ADV7180_REG_INPUT_CONTROL,
ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM
| state->input);
if (ret < 0)
goto out_unlock;
ret = adv7180_program_std(state);
if (ret)
goto out_unlock;
ret = adv7180_write(state, ADV7180_REG_AUTODETECT_ENABLE,
ADV7180_AUTODETECT_DEFAULT);
if (ret < 0)
goto out_unlock;
} else {
ret = v4l2_std_to_adv7180(state->curr_norm);
if (ret < 0)
goto out_unlock;
ret = adv7180_write(state, ADV7180_REG_INPUT_CONTROL,
ret | state->input);
if (ret < 0)
goto out_unlock;
}
/* ITU-R BT.656-4 compatible */
ret = adv7180_write(state, ADV7180_REG_EXTENDED_OUTPUT_CONTROL,
ADV7180_EXTENDED_OUTPUT_CONTROL_NTSCDIS);