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media: adv7180: Default to the first valid input

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The hardware default is differential CVBS on AIN1 & 2, which
isn't very useful.

Select the first input that is defined as valid for the
chip variant (typically CVBS_AIN1).

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
This commit is contained in:
Dave Stevenson
2018-10-31 14:57:46 +00:00
committed by Dom Cobley
parent b3e02a7574
commit 6430b1631b
1 changed files with 13 additions and 0 deletions
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13
drivers/media/i2c/adv7180.c
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@@ -1336,6 +1336,7 @@ static const struct adv7180_chip_info adv7282_m_info = {
static int init_device(struct adv7180_state *state) static int init_device(struct adv7180_state *state)
{ {
int ret; int ret;
int i;
mutex_lock(&state->mutex); mutex_lock(&state->mutex);
@@ -1383,6 +1384,18 @@ static int init_device(struct adv7180_state *state)
goto out_unlock; goto out_unlock;
} }
/* Select first valid input */
for (i = 0; i < 32; i++) {
if (BIT(i) & state->chip_info->valid_input_mask) {
ret = state->chip_info->select_input(state, i);
if (ret == 0) {
state->input = i;
break;
}
}
}
out_unlock: out_unlock:
mutex_unlock(&state->mutex); mutex_unlock(&state->mutex);