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[media] af9033: provide dyn0_clk clock source

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AF903x/IT913x demod provides clock source(s). It seems that this
clock source is used for integrated RF tuner of IT913x. It is
enabled by default, but firmware disables it automatically when
suspend is requested (suspend_flag (0x004c) + trigger_ofsm
(0x0000)). Automatic disable behavior seems to be similar for both
AF903x and IT913x I tested, though there is no likely any real
clock user in a case of AF903x.

Cc: Bimow Chen <Bimow.Chen@ite.com.tw>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Antti Palosaari 2014-08-08 23:56:49 -03:00 committed by Mauro Carvalho Chehab
parent 7c5e3e5f01
commit ca681fe0bc
2 changed files with 7 additions and 8 deletions
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10
drivers/media/dvb-frontends/af9033.c
View file

@ -314,14 +314,8 @@ 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:
/* clock output */
if (state->cfg.dyn0_clk) {
ret = af9033_wr_reg(state, 0x80fba8, 0x00);
if (ret < 0)
goto err;

5
drivers/media/dvb-frontends/af9033.h
View file

@ -75,6 +75,11 @@ struct af9033_config {
* input spectrum inversion
*/
bool spec_inv;
/*
*
*/
bool dyn0_clk;
};