p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[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 <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 12:52:25 -03:00 committed by Mauro Carvalho Chehab
parent 3999e5d01d
commit c18818e990
1 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/media/i2c/adv7180.c
View File

@ -30,6 +30,7 @@
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#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;
}