From e16176a65ade0917d0f1ca7b148a485aa5cf7b37 Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Wed, 31 Oct 2018 14:57:46 +0000 Subject: [PATCH 0138/1085] media: adv7180: Default to the first valid input 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 --- drivers/media/i2c/adv7180.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) --- a/drivers/media/i2c/adv7180.c +++ b/drivers/media/i2c/adv7180.c @@ -1340,6 +1340,7 @@ static const struct adv7180_chip_info ad static int init_device(struct adv7180_state *state) { int ret; + int i; mutex_lock(&state->mutex); @@ -1387,6 +1388,18 @@ static int init_device(struct adv7180_st 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: mutex_unlock(&state->mutex);