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[media] it913x: fix IT9135 AX sleep 

Old IT9135 AX needs a little bit different register settings for
sleep than newer IT9135 BX. This has been broken always, as power
management of the whole driver, but it started to be problem as I
fixed clock. Earlier clock was disabled very first on sleep and
rest of the commands were skipped by the chip as no clock, leaving
tuner full power state. When I fixed clocks these PM bugs started
raising out as I/O errors.

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 2014-08-09 13:39:16 -03:00 committed by Mauro Carvalho Chehab
parent 66f6319936
commit 9e0a976ed6
2 changed files with 16 additions and 1 deletions
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6
drivers/media/tuners/tuner_it913x.c
View File

@ -371,7 +371,11 @@ static int it9137_set_params(struct dvb_frontend *fe)
static int it913x_sleep(struct dvb_frontend *fe)
{
struct it913x_state *state = fe->tuner_priv;
return it913x_script_loader(state, it9137_tuner_off);
if (state->chip_ver == 0x01)
return it913x_script_loader(state, it9135ax_tuner_off);
else
return it913x_script_loader(state, it9137_tuner_off);
}
static int it913x_release(struct dvb_frontend *fe)

11
drivers/media/tuners/tuner_it913x_priv.h
View File

@ -36,6 +36,17 @@ struct it913xset { u32 pro;
u8 count;
};
/* Tuner setting scripts for IT9135 AX */
static struct it913xset it9135ax_tuner_off[] = {
{PRO_DMOD, 0xec40, {0x00}, 0x01}, /* Power Down Tuner */
{PRO_DMOD, 0xec02, {0x3f}, 0x01},
{PRO_DMOD, 0xec03, {0x1f}, 0x01},
{PRO_DMOD, 0xec04, {0x3f}, 0x01},
{PRO_DMOD, 0xec05, {0x3f}, 0x01},
{PRO_DMOD, 0xec3f, {0x01}, 0x01},
{0xff, 0x0000, {0x00}, 0x00}, /* Terminating Entry */
};
/* Tuner setting scripts (still keeping it9137) */
static struct it913xset it9137_tuner_off[] = {
{PRO_DMOD, 0xec40, {0x00}, 0x01}, /* Power Down Tuner */