This is a note to let you know that I've just added the patch titled
media: af9033: feed clock to RF tuner
to the 3.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-af9033-feed-clock-to-rf-tuner.patch
and it can be found in the queue-3.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9dc0f3fe3fe6b83b44e5920a0b143b4f96755b59 Mon Sep 17 00:00:00 2001
From: Antti Palosaari <crope@xxxxxx>
Date: Sat, 9 Aug 2014 01:03:14 -0300
Subject: media: af9033: feed clock to RF tuner
From: Antti Palosaari <crope@xxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Antti Palosaari <crope@xxxxxx>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/dvb-frontends/af9033.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/drivers/media/dvb-frontends/af9033.c
+++ b/drivers/media/dvb-frontends/af9033.c
@@ -314,6 +314,19 @@ static int af9033_init(struct dvb_fronte
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);
Patches currently in stable-queue which might be from crope@xxxxxx are
queue-3.16/media-af9033-feed-clock-to-rf-tuner.patch
queue-3.16/media-af9035-new-ids-add-support-for-pctv-78e-and-pctv-79e.patch
queue-3.16/media-af9033-update-it9135-tuner-inittabs.patch
queue-3.16/media-it913x-init-tuner-on-attach.patch
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