From: Devin Heitmueller Date: Wed, 19 Apr 2017 23:13:50 +0000 (-0300) Subject: [media] au8522: fix lock detection to be more reliable X-Git-Tag: v4.13-rc1~141^2~295 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b01052ab0924f07a80538974806f9681d8ea74d1;p=karo-tx-linux.git [media] au8522: fix lock detection to be more reliable Only looking at the lock register causes the status to float between locked and not locked when there is no signal. So improve the logic to also examine the state of the FSC PLL, which results in the lock status being consistently reported. Signed-off-by: Devin Heitmueller Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/dvb-frontends/au8522_decoder.c b/drivers/media/dvb-frontends/au8522_decoder.c index 5e2164044fc6..343dc92ef54e 100644 --- a/drivers/media/dvb-frontends/au8522_decoder.c +++ b/drivers/media/dvb-frontends/au8522_decoder.c @@ -623,10 +623,12 @@ static int au8522_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) int val = 0; struct au8522_state *state = to_state(sd); u8 lock_status; + u8 pll_status; /* Interrogate the decoder to see if we are getting a real signal */ lock_status = au8522_readreg(state, 0x00); - if (lock_status == 0xa2) + pll_status = au8522_readreg(state, 0x7e); + if ((lock_status == 0xa2) && (pll_status & 0x10)) vt->signal = 0xffff; else vt->signal = 0x00;