From c18818e99067ea084e07cbb9a590389180252b7e Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Fri, 23 Jan 2015 12:52:25 -0300 Subject: [PATCH] [media] adv7180: Reset the device before initialization Reset the device when initializing it so it is in a good known state and the assumed register settings matches the actual register settings. Signed-off-by: Lars-Peter Clausen Acked-by: Federico Vaga Acked-by: Hans Verkuil Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/adv7180.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c index 432a756f8e1d..44a2832d8d11 100644 --- a/drivers/media/i2c/adv7180.c +++ b/drivers/media/i2c/adv7180.c @@ -30,6 +30,7 @@ #include #include #include +#include #define ADV7180_REG_INPUT_CONTROL 0x0000 #define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM 0x00 @@ -523,6 +524,9 @@ static int init_device(struct adv7180_state *state) mutex_lock(&state->mutex); + adv7180_write(state, ADV7180_REG_PWR_MAN, ADV7180_PWR_MAN_RES); + usleep_range(2000, 10000); + /* Initialize adv7180 */ /* Enable autodetection */ if (state->autodetect) { @@ -692,14 +696,14 @@ static int adv7180_resume(struct device *dev) struct adv7180_state *state = to_state(sd); int ret; - if (state->powered) { - ret = adv7180_set_power(state, true); - if (ret) - return ret; - } ret = init_device(state); if (ret < 0) return ret; + + ret = adv7180_set_power(state, state->powered); + if (ret) + return ret; + return 0; } -- 2.11.0