diff options
| author | Mats Randgaard <matrandg@cisco.com> | 2013-12-05 10:24:05 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-01-07 06:07:07 -0200 |
| commit | ff4f80fdfaefb7906ed58ec36248591687f927b5 (patch) | |
| tree | bb34b539e067608a17fbf995dc2ee8bbb39c4dc9 /drivers/media/i2c | |
| parent | 94b130131115de6c7c6b6228379e61d270ab8966 (diff) | |
[media] adv7604: return immediately if the new input is equal to what is configured
Signed-off-by: Mats Randgaard <matrandg@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/i2c')
| -rw-r--r-- | drivers/media/i2c/adv7604.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c index c85f86c9c60..4e7d39a5b20 100644 --- a/drivers/media/i2c/adv7604.c +++ b/drivers/media/i2c/adv7604.c @@ -1479,7 +1479,11 @@ static int adv7604_s_routing(struct v4l2_subdev *sd, { struct adv7604_state *state = to_state(sd); - v4l2_dbg(2, debug, sd, "%s: input %d", __func__, input); + v4l2_dbg(2, debug, sd, "%s: input %d, selected input %d", + __func__, input, state->selected_input); + + if (input == state->selected_input) + return 0; state->selected_input = input; @@ -1524,6 +1528,8 @@ static int adv7604_isr(struct v4l2_subdev *sd, u32 status, bool *handled) u8 fmt_change, fmt_change_digital, tx_5v; u32 input_status; + v4l2_dbg(2, debug, sd, "%s: ", __func__); + /* format change */ fmt_change = io_read(sd, 0x43) & 0x98; if (fmt_change) @@ -2124,6 +2130,7 @@ static int adv7604_probe(struct i2c_client *client, /* initialize variables */ state->restart_stdi_once = true; state->prev_input_status = ~0; + state->selected_input = ~0; /* platform data */ if (!pdata) { |