From: Antti Palosaari Date: Sat, 9 Aug 2014 16:39:16 +0000 (-0300) Subject: [media] it913x: fix IT9135 AX sleep X-Git-Tag: firefly_0821_release~176^2~2474^2~599 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9e0a976ed60345d53e8d421cb0a39202ce8487fe;p=firefly-linux-kernel-4.4.55.git [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 Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/tuners/tuner_it913x.c b/drivers/media/tuners/tuner_it913x.c index cd20c5b0f07e..281d8c5cc0a9 100644 --- a/drivers/media/tuners/tuner_it913x.c +++ b/drivers/media/tuners/tuner_it913x.c @@ -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) diff --git a/drivers/media/tuners/tuner_it913x_priv.h b/drivers/media/tuners/tuner_it913x_priv.h index 8e85a61ea5f9..cc6f4b1e45aa 100644 --- a/drivers/media/tuners/tuner_it913x_priv.h +++ b/drivers/media/tuners/tuner_it913x_priv.h @@ -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 */