diff options
| -rw-r--r-- | drivers/media/dvb/frontends/au8522_decoder.c | 2 | ||||
| -rw-r--r-- | drivers/media/dvb/frontends/au8522_dig.c | 21 | ||||
| -rw-r--r-- | drivers/media/dvb/frontends/au8522_priv.h | 5 |
3 files changed, 28 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/au8522_decoder.c b/drivers/media/dvb/frontends/au8522_decoder.c index 24268ef..ef5fd49 100644 --- a/drivers/media/dvb/frontends/au8522_decoder.c +++ b/drivers/media/dvb/frontends/au8522_decoder.c @@ -664,6 +664,8 @@ static int au8522_reset(struct v4l2_subdev *sd, u32 val) { struct au8522_state *state = to_state(sd); + state->operational_mode = AU8522_ANALOG_MODE; + au8522_writereg(state, 0xa4, 1 << 5); return 0; diff --git a/drivers/media/dvb/frontends/au8522_dig.c b/drivers/media/dvb/frontends/au8522_dig.c index a1fed0f..e2efb25 100644 --- a/drivers/media/dvb/frontends/au8522_dig.c +++ b/drivers/media/dvb/frontends/au8522_dig.c @@ -84,6 +84,14 @@ static int au8522_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) dprintk("%s(%d)\n", __func__, enable); + if (state->operational_mode == AU8522_ANALOG_MODE) { + /* We're being asked to manage the gate even though we're + not in digital mode. This can occur if we get switched + over to analog mode before the dvb_frontend kernel thread + has completely shutdown */ + return 0; + } + if (enable) return au8522_writereg(state, 0x106, 1); else @@ -608,6 +616,8 @@ int au8522_init(struct dvb_frontend *fe) struct au8522_state *state = fe->demodulator_priv; dprintk("%s()\n", __func__); + state->operational_mode = AU8522_DIGITAL_MODE; + au8522_writereg(state, 0xa4, 1 << 5); au8522_i2c_gate_ctrl(fe, 1); @@ -704,6 +714,15 @@ int au8522_sleep(struct dvb_frontend *fe) struct au8522_state *state = fe->demodulator_priv; dprintk("%s()\n", __func__); + /* Only power down if the digital side is currently using the chip */ + if (state->operational_mode == AU8522_ANALOG_MODE) { + /* We're not in one of the expected power modes, which means + that the DVB thread is probably telling us to go to sleep + even though the analog frontend has already started using + the chip. So ignore the request */ + return 0; + } + /* turn off led */ au8522_led_ctrl(state, 0); @@ -932,6 +951,8 @@ struct dvb_frontend *au8522_attach(const struct au8522_config *config, /* setup the state */ state->config = config; state->i2c = i2c; + state->operational_mode = AU8522_DIGITAL_MODE; + /* create dvb_frontend */ memcpy(&state->frontend.ops, &au8522_ops, sizeof(struct dvb_frontend_ops)); diff --git a/drivers/media/dvb/frontends/au8522_priv.h b/drivers/media/dvb/frontends/au8522_priv.h index c74c4e7..609cf04 100644 --- a/drivers/media/dvb/frontends/au8522_priv.h +++ b/drivers/media/dvb/frontends/au8522_priv.h @@ -34,10 +34,15 @@ #include "au8522.h" #include "tuner-i2c.h" +#define AU8522_ANALOG_MODE 0 +#define AU8522_DIGITAL_MODE 1 + struct au8522_state { struct i2c_client *c; struct i2c_adapter *i2c; + u8 operational_mode; + /* Used for sharing of the state between analog and digital mode */ struct tuner_i2c_props i2c_props; struct list_head hybrid_tuner_instance_list; |
