diff options
| author | Antti Palosaari <crope@iki.fi> | 2014-12-09 20:14:41 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-02-03 18:54:59 +0100 |
| commit | fd4cfa8bb1bc0cdd385f33303b5058674ea8e24c (patch) | |
| tree | fdd1c1a9e2dfb1a70f499e6f3e6fe1bfa16cbd72 /drivers/media/dvb-frontends/rtl2830_priv.h | |
| parent | [media] rtl28xxu: add support for RTL2831U/RTL2830 PID filter (diff) | |
| download | linux-fd4cfa8bb1bc0cdd385f33303b5058674ea8e24c.tar.xz linux-fd4cfa8bb1bc0cdd385f33303b5058674ea8e24c.zip | |
[media] rtl2830: implement own I2C locking
Own I2C locking is needed due to two special reasons:
1) Chips uses multiple register pages/banks on single I2C slave.
Page is changed via I2C register access.
2) Chip offers muxed/gated I2C adapter for tuner. Gate/mux is
controlled by I2C register access.
Due to these reasons, I2C locking did not fit very well.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/dvb-frontends/rtl2830_priv.h')
| -rw-r--r-- | drivers/media/dvb-frontends/rtl2830_priv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/rtl2830_priv.h b/drivers/media/dvb-frontends/rtl2830_priv.h index 293188924f51..517758ab687a 100644 --- a/drivers/media/dvb-frontends/rtl2830_priv.h +++ b/drivers/media/dvb-frontends/rtl2830_priv.h @@ -30,6 +30,7 @@ struct rtl2830_dev { struct i2c_adapter *adapter; struct dvb_frontend fe; bool sleeping; + struct mutex i2c_mutex; u8 page; /* active register page */ unsigned long filters; struct delayed_work stat_work; |