On 31/01/15 00:00, Octavian Purdila wrote: > Add a separate structure for triggers and add the infrastructure to > support an arbitrary number of triggers. Each trigger is associated > with an interrupt and has an enabled/disabled state. > > Signed-off-by: Octavian Purdila <octavian.purdila@xxxxxxxxx> Another sensible patch. One trivial point inline. Otherwise, I'd like an Ack from Srinivas on this as it's a non trivial bit of refactoring and despite seeming like a good idea does add a fair bit of code! J > --- > drivers/iio/accel/bmc150-accel.c | 195 ++++++++++++++++++++++++--------------- > 1 file changed, 119 insertions(+), 76 deletions(-) > > diff --git a/drivers/iio/accel/bmc150-accel.c b/drivers/iio/accel/bmc150-accel.c > index b23ad1b..c05aa43 100644 > --- a/drivers/iio/accel/bmc150-accel.c > +++ b/drivers/iio/accel/bmc150-accel.c > @@ -152,14 +152,22 @@ struct bmc150_accel_interrupt { > atomic_t users; > }; > > +struct bmc150_accel_trigger { > + struct bmc150_accel_interrupt *intr; > + struct bmc150_accel_data *data; > + struct iio_trigger *indio_trig; > + bool enabled; > + int (*setup)(struct bmc150_accel_trigger *t, bool state); > +}; > + > #define BMC150_ACCEL_INTERRUPTS 2 > +#define BMC150_ACCEL_TRIGGERS 2 > > struct bmc150_accel_data { > struct i2c_client *client; > struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS]; > - struct iio_trigger *dready_trig; > - struct iio_trigger *motion_trig; > atomic_t active_intr; > + struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS]; > struct mutex mutex; > s16 buffer[8]; > u8 bw_bits; > @@ -167,8 +175,6 @@ struct bmc150_accel_data { > u32 slope_thres; > u32 range; > int ev_enable_state; > - bool dready_trigger_on; > - bool motion_trigger_on; > int64_t timestamp; > const struct bmc150_accel_chip_info *chip_info; > }; > @@ -309,6 +315,15 @@ static int bmc150_accel_update_slope(struct bmc150_accel_data *data) > return ret; > } > > +static int bmc150_accel_any_motion_setup(struct bmc150_accel_trigger *t, > + bool state) > +{ > + if (state) > + return bmc150_accel_update_slope(t->data); > + > + return 0; > +} > + > static int bmc150_accel_chip_init(struct bmc150_accel_data *data) > { > int ret; > @@ -787,11 +802,14 @@ static int bmc150_accel_validate_trigger(struct iio_dev *indio_dev, > struct iio_trigger *trig) > { > struct bmc150_accel_data *data = iio_priv(indio_dev); > + int i; > > - if (data->dready_trig != trig && data->motion_trig != trig) > - return -EINVAL; > + for (i = 0; i < BMC150_ACCEL_TRIGGERS; i++) { > + if (data->triggers[i].indio_trig == trig) > + return 0; > + } > > - return 0; > + return -EINVAL; > } > > static IIO_CONST_ATTR_SAMP_FREQ_AVAIL( > @@ -963,12 +981,12 @@ err_read: > > static int bmc150_accel_trig_try_reen(struct iio_trigger *trig) > { > - struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); > - struct bmc150_accel_data *data = iio_priv(indio_dev); > + struct bmc150_accel_trigger *t = iio_trigger_get_drvdata(trig); > + struct bmc150_accel_data *data = t->data; > int ret; > > /* new data interrupts don't need ack */ > - if (data->dready_trigger_on) > + if (t == &t->data->triggers[0]) > return 0; > > mutex_lock(&data->mutex); > @@ -990,42 +1008,32 @@ static int bmc150_accel_trig_try_reen(struct iio_trigger *trig) > static int bmc150_accel_data_rdy_trigger_set_state(struct iio_trigger *trig, > bool state) > { > - struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); > - struct bmc150_accel_data *data = iio_priv(indio_dev); > + struct bmc150_accel_trigger *t = iio_trigger_get_drvdata(trig); > + struct bmc150_accel_data *data = t->data; > int ret; > > mutex_lock(&data->mutex); > > - if (data->motion_trig == trig) { > - if (data->motion_trigger_on == state) { > - mutex_unlock(&data->mutex); > - return 0; > - } > - } else { > - if (data->dready_trigger_on == state) { > + if (t->enabled == state) { > + mutex_unlock(&data->mutex); > + return 0; > + } > + > + if (t->setup) { > + ret = t->setup(t, state); > + if (ret < 0) { > mutex_unlock(&data->mutex); > - return 0; > + return ret; > } > } > > - if (data->motion_trig == trig) { > - ret = bmc150_accel_update_slope(data); > - if (!ret) > - ret = bmc150_accel_set_interrupt(data, > - &data->interrupts[1], > - state); > - } else { > - ret = bmc150_accel_set_interrupt(data, &data->interrupts[0], > - state); > - } > + ret = bmc150_accel_set_interrupt(data, t->intr, state); > if (ret < 0) { > mutex_unlock(&data->mutex); > return ret; > } > - if (data->motion_trig == trig) > - data->motion_trigger_on = state; > - else > - data->dready_trigger_on = state; > + > + t->enabled = state; > > mutex_unlock(&data->mutex); > > @@ -1079,7 +1087,7 @@ static irqreturn_t bmc150_accel_event_handler(int irq, void *private) > dir), > data->timestamp); > ack_intr_status: > - if (!data->dready_trigger_on) > + if (!data->triggers[0].enabled) > ret = i2c_smbus_write_byte_data(data->client, > BMC150_ACCEL_REG_INT_RST_LATCH, > BMC150_ACCEL_INT_MODE_LATCH_INT | > @@ -1092,13 +1100,16 @@ static irqreturn_t bmc150_accel_data_rdy_trig_poll(int irq, void *private) > { > struct iio_dev *indio_dev = private; > struct bmc150_accel_data *data = iio_priv(indio_dev); > + int i; > > data->timestamp = iio_get_time_ns(); > > - if (data->dready_trigger_on) > - iio_trigger_poll(data->dready_trig); > - else if (data->motion_trigger_on) > - iio_trigger_poll(data->motion_trig); > + for (i = 0; i < BMC150_ACCEL_TRIGGERS; i++) { > + if (data->triggers[i].enabled) { > + iio_trigger_poll(data->triggers[i].indio_trig); > + break; > + } > + } > > if (data->ev_enable_state) > return IRQ_WAKE_THREAD; > @@ -1150,6 +1161,71 @@ static int bmc150_accel_gpio_probe(struct i2c_client *client, > return ret; > } > > +static const struct { > + int intr; > + const char *name; > + int (*setup)(struct bmc150_accel_trigger *t, bool state); > +} bmc150_accel_triggers[BMC150_ACCEL_TRIGGERS] = { > + { > + .intr = 0, > + .name = "%s-dev%d", > + }, > + { > + .intr = 1, > + .name = "%s-any-motion-dev%d", > + .setup = bmc150_accel_any_motion_setup, > + }, > +}; > + > +static void bmc150_accel_unregister_triggers(struct bmc150_accel_data *data, > + int from) > +{ > + int i; > + > + for (i = from; i >= 0; i++) { > + if (data->triggers[i].indio_trig) { > + iio_trigger_unregister(data->triggers[i].indio_trig); > + data->triggers[i].indio_trig = NULL; > + } > + } > +} > + > +static int bmc150_accel_triggers_setup(struct iio_dev *indio_dev, > + struct bmc150_accel_data *data) > +{ > + int i, ret; > + > + for (i = 0; i < BMC150_ACCEL_TRIGGERS; i++) { > + struct bmc150_accel_trigger *t = &data->triggers[i]; > + const char *name = bmc150_accel_triggers[i].name; Why bother with this local variable? Just pass it straight in. > + int intr = bmc150_accel_triggers[i].intr; > + > + t->indio_trig = devm_iio_trigger_alloc(&data->client->dev, name, > + indio_dev->name, > + indio_dev->id); > + if (!t->indio_trig) { > + ret = -ENOMEM; > + break; > + } > + > + t->indio_trig->dev.parent = &data->client->dev; > + t->indio_trig->ops = &bmc150_accel_trigger_ops; > + t->intr = &data->interrupts[intr]; > + t->data = data; > + t->setup = bmc150_accel_triggers[i].setup; > + iio_trigger_set_drvdata(t->indio_trig, t); > + > + ret = iio_trigger_register(t->indio_trig); > + if (ret) > + break; > + } > + > + if (ret) > + bmc150_accel_unregister_triggers(data, i - 1); > + > + return ret; > +} > + > static int bmc150_accel_probe(struct i2c_client *client, > const struct i2c_device_id *id) > { > @@ -1220,36 +1296,10 @@ static int bmc150_accel_probe(struct i2c_client *client, > > bmc150_accel_interrupts_setup(indio_dev, data); > > - data->dready_trig = devm_iio_trigger_alloc(&client->dev, > - "%s-dev%d", > - indio_dev->name, > - indio_dev->id); > - if (!data->dready_trig) > - return -ENOMEM; > - > - data->motion_trig = devm_iio_trigger_alloc(&client->dev, > - "%s-any-motion-dev%d", > - indio_dev->name, > - indio_dev->id); > - if (!data->motion_trig) > - return -ENOMEM; > - > - data->dready_trig->dev.parent = &client->dev; > - data->dready_trig->ops = &bmc150_accel_trigger_ops; > - iio_trigger_set_drvdata(data->dready_trig, indio_dev); > - ret = iio_trigger_register(data->dready_trig); > + ret = bmc150_accel_triggers_setup(indio_dev, data); > if (ret) > return ret; > > - data->motion_trig->dev.parent = &client->dev; > - data->motion_trig->ops = &bmc150_accel_trigger_ops; > - iio_trigger_set_drvdata(data->motion_trig, indio_dev); > - ret = iio_trigger_register(data->motion_trig); > - if (ret) { > - data->motion_trig = NULL; > - goto err_trigger_unregister; > - } > - > ret = iio_triggered_buffer_setup(indio_dev, > &iio_pollfunc_store_time, > bmc150_accel_trigger_handler, > @@ -1281,13 +1331,10 @@ static int bmc150_accel_probe(struct i2c_client *client, > err_iio_unregister: > iio_device_unregister(indio_dev); > err_buffer_cleanup: > - if (data->dready_trig) > + if (indio_dev->pollfunc) > iio_triggered_buffer_cleanup(indio_dev); > err_trigger_unregister: > - if (data->dready_trig) > - iio_trigger_unregister(data->dready_trig); > - if (data->motion_trig) > - iio_trigger_unregister(data->motion_trig); > + bmc150_accel_unregister_triggers(data, BMC150_ACCEL_TRIGGERS - 1); > > return ret; > } > @@ -1303,11 +1350,7 @@ static int bmc150_accel_remove(struct i2c_client *client) > > iio_device_unregister(indio_dev); > > - if (data->dready_trig) { > - iio_triggered_buffer_cleanup(indio_dev); > - iio_trigger_unregister(data->dready_trig); > - iio_trigger_unregister(data->motion_trig); > - } > + bmc150_accel_unregister_triggers(data, BMC150_ACCEL_TRIGGERS - 1); > > mutex_lock(&data->mutex); > bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_DEEP_SUSPEND, 0); > -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html