diff options
| author | Antti Palosaari <crope@iki.fi> | 2014-08-09 01:03:14 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-10-05 13:41:10 -0700 |
| commit | 994e79d27522f771fd7cf44e08ce8b9b2ee7f479 (patch) | |
| tree | c2522995c94d0fdf29c3ac2adb8571aac6bd6f2c | |
| parent | 5e80de308270994b0b7fcbef92f0da55e4008c6b (diff) | |
media: af9033: feed clock to RF tuner
commit 9dc0f3fe3fe6b83b44e5920a0b143b4f96755b59 upstream.
IT9135 RF tuner clock is coming from demodulator. We need enable it
early in demod init, before any tuner I/O. Currently it is enabled
by tuner driver itself, but it is too late and performance will be
reduced as some registers are not updated correctly. Clock is
disabled automatically when demod is put onto sleep.
Cc: Bimow Chen <Bimow.Chen@ite.com.tw>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/media/dvb-frontends/af9033.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/af9033.c b/drivers/media/dvb-frontends/af9033.c index be4bec2a9640..5c90ea683a7e 100644 --- a/drivers/media/dvb-frontends/af9033.c +++ b/drivers/media/dvb-frontends/af9033.c @@ -314,6 +314,19 @@ static int af9033_init(struct dvb_frontend *fe) goto err; } + /* feed clock to RF tuner */ + switch (state->cfg.tuner) { + case AF9033_TUNER_IT9135_38: + case AF9033_TUNER_IT9135_51: + case AF9033_TUNER_IT9135_52: + case AF9033_TUNER_IT9135_60: + case AF9033_TUNER_IT9135_61: + case AF9033_TUNER_IT9135_62: + ret = af9033_wr_reg(state, 0x80fba8, 0x00); + if (ret < 0) + goto err; + } + /* settings for TS interface */ if (state->cfg.ts_mode == AF9033_TS_MODE_USB) { ret = af9033_wr_reg_mask(state, 0x80f9a5, 0x00, 0x01); |