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author | Antti Palosaari <crope@iki.fi> | 2013-11-26 12:53:46 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-03-05 15:38:28 -0300 |
commit | 8823f0288d345a26b27502c71f8ca3d05b4ac013 (patch) | |
tree | 12c7419d42bd1873db13cdea116635498c9d98a0 /drivers/media/dvb-frontends | |
parent | 3ca2418d707c9eeafa76f6096eb8e06d1cfa8bdb (diff) | |
download | op-kernel-dev-8823f0288d345a26b27502c71f8ca3d05b4ac013.zip op-kernel-dev-8823f0288d345a26b27502c71f8ca3d05b4ac013.tar.gz |
[media] rtl2832: provide muxed I2C adapter
RTL2832 provides gated / repeater I2C adapter for tuner.
Implement it as a muxed I2C adapter.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/dvb-frontends')
-rw-r--r-- | drivers/media/dvb-frontends/Kconfig | 2 | ||||
-rw-r--r-- | drivers/media/dvb-frontends/rtl2832.c | 26 | ||||
-rw-r--r-- | drivers/media/dvb-frontends/rtl2832.h | 13 | ||||
-rw-r--r-- | drivers/media/dvb-frontends/rtl2832_priv.h | 2 |
4 files changed, 42 insertions, 1 deletions
diff --git a/drivers/media/dvb-frontends/Kconfig b/drivers/media/dvb-frontends/Kconfig index 611c794..025fc54 100644 --- a/drivers/media/dvb-frontends/Kconfig +++ b/drivers/media/dvb-frontends/Kconfig @@ -441,7 +441,7 @@ config DVB_RTL2830 config DVB_RTL2832 tristate "Realtek RTL2832 DVB-T" - depends on DVB_CORE && I2C + depends on DVB_CORE && I2C && I2C_MUX default m if !MEDIA_SUBDRV_AUTOSELECT help Say Y when you want to support this frontend. diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c index 00e63b9..dc46cf08 100644 --- a/drivers/media/dvb-frontends/rtl2832.c +++ b/drivers/media/dvb-frontends/rtl2832.c @@ -891,9 +891,29 @@ static void rtl2832_release(struct dvb_frontend *fe) struct rtl2832_priv *priv = fe->demodulator_priv; dev_dbg(&priv->i2c->dev, "%s:\n", __func__); + i2c_del_mux_adapter(priv->i2c_adapter); kfree(priv); } +static int rtl2832_select(struct i2c_adapter *adap, void *mux_priv, u32 chan) +{ + struct rtl2832_priv *priv = mux_priv; + return rtl2832_i2c_gate_ctrl(&priv->fe, 1); +} + +static int rtl2832_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan) +{ + struct rtl2832_priv *priv = mux_priv; + return rtl2832_i2c_gate_ctrl(&priv->fe, 0); +} + +struct i2c_adapter *rtl2832_get_i2c_adapter(struct dvb_frontend *fe) +{ + struct rtl2832_priv *priv = fe->demodulator_priv; + return priv->i2c_adapter; +} +EXPORT_SYMBOL(rtl2832_get_i2c_adapter); + struct dvb_frontend *rtl2832_attach(const struct rtl2832_config *cfg, struct i2c_adapter *i2c) { @@ -918,6 +938,12 @@ struct dvb_frontend *rtl2832_attach(const struct rtl2832_config *cfg, if (ret) goto err; + /* create muxed i2c adapter */ + priv->i2c_adapter = i2c_add_mux_adapter(i2c, &i2c->dev, priv, 0, 0, 0, + rtl2832_select, rtl2832_deselect); + if (priv->i2c_adapter == NULL) + goto err; + /* create dvb_frontend */ memcpy(&priv->fe.ops, &rtl2832_ops, sizeof(struct dvb_frontend_ops)); priv->fe.demodulator_priv = priv; diff --git a/drivers/media/dvb-frontends/rtl2832.h b/drivers/media/dvb-frontends/rtl2832.h index fa4e5f6..a9202d7 100644 --- a/drivers/media/dvb-frontends/rtl2832.h +++ b/drivers/media/dvb-frontends/rtl2832.h @@ -55,7 +55,13 @@ struct dvb_frontend *rtl2832_attach( const struct rtl2832_config *cfg, struct i2c_adapter *i2c ); + +extern struct i2c_adapter *rtl2832_get_i2c_adapter( + struct dvb_frontend *fe +); + #else + static inline struct dvb_frontend *rtl2832_attach( const struct rtl2832_config *config, struct i2c_adapter *i2c @@ -64,6 +70,13 @@ static inline struct dvb_frontend *rtl2832_attach( pr_warn("%s: driver disabled by Kconfig\n", __func__); return NULL; } + +static inline struct i2c_adapter *rtl2832_get_i2c_adapter( + struct dvb_frontend *fe +) +{ + return NULL; +} #endif diff --git a/drivers/media/dvb-frontends/rtl2832_priv.h b/drivers/media/dvb-frontends/rtl2832_priv.h index 4c845af..ec26c92 100644 --- a/drivers/media/dvb-frontends/rtl2832_priv.h +++ b/drivers/media/dvb-frontends/rtl2832_priv.h @@ -23,9 +23,11 @@ #include "dvb_frontend.h" #include "rtl2832.h" +#include <linux/i2c-mux.h> struct rtl2832_priv { struct i2c_adapter *i2c; + struct i2c_adapter *i2c_adapter; struct dvb_frontend fe; struct rtl2832_config cfg; |