iio: vcnl4000: Enable runtime pm for vcnl4200/4040
This is modelled after the vcnl4035 driver. For the vcnl40{0,1,2}0
we don't do anything since they use on demand measurement.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Guido Günther
Jonathan Cameron
Родитель
4a818643e9
Коммит
5e00708df3
|
|
@ -22,6 +22,7 @@
|
|||
#include <linux/i2c.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/pm_runtime.h>
|
||||
|
||||
#include <linux/iio/iio.h>
|
||||
#include <linux/iio/sysfs.h>
|
||||
|
|
@ -57,6 +58,8 @@
|
|||
#define VCNL4000_AL_OD BIT(4) /* start on-demand ALS measurement */
|
||||
#define VCNL4000_PS_OD BIT(3) /* start on-demand proximity measurement */
|
||||
|
||||
#define VCNL4000_SLEEP_DELAY_MS 2000 /* before we enter pm_runtime_suspend */
|
||||
|
||||
enum vcnl4000_device_ids {
|
||||
VCNL4000,
|
||||
VCNL4010,
|
||||
|
|
@ -87,6 +90,7 @@ struct vcnl4000_chip_spec {
|
|||
int (*init)(struct vcnl4000_data *data);
|
||||
int (*measure_light)(struct vcnl4000_data *data, int *val);
|
||||
int (*measure_proximity)(struct vcnl4000_data *data, int *val);
|
||||
int (*set_power_state)(struct vcnl4000_data *data, bool on);
|
||||
};
|
||||
|
||||
static const struct i2c_device_id vcnl4000_id[] = {
|
||||
|
|
@ -99,6 +103,12 @@ static const struct i2c_device_id vcnl4000_id[] = {
|
|||
};
|
||||
MODULE_DEVICE_TABLE(i2c, vcnl4000_id);
|
||||
|
||||
static int vcnl4000_set_power_state(struct vcnl4000_data *data, bool on)
|
||||
{
|
||||
/* no suspend op */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vcnl4000_init(struct vcnl4000_data *data)
|
||||
{
|
||||
int ret, prod_id;
|
||||
|
|
@ -127,9 +137,31 @@ static int vcnl4000_init(struct vcnl4000_data *data)
|
|||
data->al_scale = 250000;
|
||||
mutex_init(&data->vcnl4000_lock);
|
||||
|
||||
return 0;
|
||||
return data->chip_spec->set_power_state(data, true);
|
||||
};
|
||||
|
||||
static int vcnl4200_set_power_state(struct vcnl4000_data *data, bool on)
|
||||
{
|
||||
u16 val = on ? 0 /* power on */ : 1 /* shut down */;
|
||||
int ret;
|
||||
|
||||
ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF, val);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1, val);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (on) {
|
||||
/* Wait at least one integration cycle before fetching data */
|
||||
data->vcnl4200_al.last_measurement = ktime_get();
|
||||
data->vcnl4200_ps.last_measurement = ktime_get();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vcnl4200_init(struct vcnl4000_data *data)
|
||||
{
|
||||
int ret, id;
|
||||
|
|
@ -155,14 +187,6 @@ static int vcnl4200_init(struct vcnl4000_data *data)
|
|||
|
||||
data->rev = (ret >> 8) & 0xf;
|
||||
|
||||
/* Set defaults and enable both channels */
|
||||
ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF, 0);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1, 0);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
data->vcnl4200_al.reg = VCNL4200_AL_DATA;
|
||||
data->vcnl4200_ps.reg = VCNL4200_PS_DATA;
|
||||
switch (id) {
|
||||
|
|
@ -180,11 +204,13 @@ static int vcnl4200_init(struct vcnl4000_data *data)
|
|||
data->al_scale = 120000;
|
||||
break;
|
||||
}
|
||||
data->vcnl4200_al.last_measurement = ktime_set(0, 0);
|
||||
data->vcnl4200_ps.last_measurement = ktime_set(0, 0);
|
||||
mutex_init(&data->vcnl4200_al.lock);
|
||||
mutex_init(&data->vcnl4200_ps.lock);
|
||||
|
||||
ret = data->chip_spec->set_power_state(data, true);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
};
|
||||
|
||||
|
|
@ -291,24 +317,28 @@ static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
|
|||
.init = vcnl4000_init,
|
||||
.measure_light = vcnl4000_measure_light,
|
||||
.measure_proximity = vcnl4000_measure_proximity,
|
||||
.set_power_state = vcnl4000_set_power_state,
|
||||
},
|
||||
[VCNL4010] = {
|
||||
.prod = "VCNL4010/4020",
|
||||
.init = vcnl4000_init,
|
||||
.measure_light = vcnl4000_measure_light,
|
||||
.measure_proximity = vcnl4000_measure_proximity,
|
||||
.set_power_state = vcnl4000_set_power_state,
|
||||
},
|
||||
[VCNL4040] = {
|
||||
.prod = "VCNL4040",
|
||||
.init = vcnl4200_init,
|
||||
.measure_light = vcnl4200_measure_light,
|
||||
.measure_proximity = vcnl4200_measure_proximity,
|
||||
.set_power_state = vcnl4200_set_power_state,
|
||||
},
|
||||
[VCNL4200] = {
|
||||
.prod = "VCNL4200",
|
||||
.init = vcnl4200_init,
|
||||
.measure_light = vcnl4200_measure_light,
|
||||
.measure_proximity = vcnl4200_measure_proximity,
|
||||
.set_power_state = vcnl4200_set_power_state,
|
||||
},
|
||||
};
|
||||
|
||||
|
|
@ -323,6 +353,23 @@ static const struct iio_chan_spec vcnl4000_channels[] = {
|
|||
}
|
||||
};
|
||||
|
||||
static int vcnl4000_set_pm_runtime_state(struct vcnl4000_data *data, bool on)
|
||||
{
|
||||
struct device *dev = &data->client->dev;
|
||||
int ret;
|
||||
|
||||
if (on) {
|
||||
ret = pm_runtime_get_sync(dev);
|
||||
if (ret < 0)
|
||||
pm_runtime_put_noidle(dev);
|
||||
} else {
|
||||
pm_runtime_mark_last_busy(dev);
|
||||
ret = pm_runtime_put_autosuspend(dev);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int vcnl4000_read_raw(struct iio_dev *indio_dev,
|
||||
struct iio_chan_spec const *chan,
|
||||
int *val, int *val2, long mask)
|
||||
|
|
@ -332,6 +379,10 @@ static int vcnl4000_read_raw(struct iio_dev *indio_dev,
|
|||
|
||||
switch (mask) {
|
||||
case IIO_CHAN_INFO_RAW:
|
||||
ret = vcnl4000_set_pm_runtime_state(data, true);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
switch (chan->type) {
|
||||
case IIO_LIGHT:
|
||||
ret = data->chip_spec->measure_light(data, val);
|
||||
|
|
@ -346,6 +397,7 @@ static int vcnl4000_read_raw(struct iio_dev *indio_dev,
|
|||
default:
|
||||
ret = -EINVAL;
|
||||
}
|
||||
vcnl4000_set_pm_runtime_state(data, false);
|
||||
return ret;
|
||||
case IIO_CHAN_INFO_SCALE:
|
||||
if (chan->type != IIO_LIGHT)
|
||||
|
|
@ -394,7 +446,22 @@ static int vcnl4000_probe(struct i2c_client *client,
|
|||
indio_dev->name = VCNL4000_DRV_NAME;
|
||||
indio_dev->modes = INDIO_DIRECT_MODE;
|
||||
|
||||
return devm_iio_device_register(&client->dev, indio_dev);
|
||||
ret = pm_runtime_set_active(&client->dev);
|
||||
if (ret < 0)
|
||||
goto fail_poweroff;
|
||||
|
||||
ret = iio_device_register(indio_dev);
|
||||
if (ret < 0)
|
||||
goto fail_poweroff;
|
||||
|
||||
pm_runtime_enable(&client->dev);
|
||||
pm_runtime_set_autosuspend_delay(&client->dev, VCNL4000_SLEEP_DELAY_MS);
|
||||
pm_runtime_use_autosuspend(&client->dev);
|
||||
|
||||
return 0;
|
||||
fail_poweroff:
|
||||
data->chip_spec->set_power_state(data, false);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static const struct of_device_id vcnl_4000_of_match[] = {
|
||||
|
|
@ -422,13 +489,51 @@ static const struct of_device_id vcnl_4000_of_match[] = {
|
|||
};
|
||||
MODULE_DEVICE_TABLE(of, vcnl_4000_of_match);
|
||||
|
||||
static int vcnl4000_remove(struct i2c_client *client)
|
||||
{
|
||||
struct iio_dev *indio_dev = i2c_get_clientdata(client);
|
||||
struct vcnl4000_data *data = iio_priv(indio_dev);
|
||||
|
||||
pm_runtime_dont_use_autosuspend(&client->dev);
|
||||
pm_runtime_disable(&client->dev);
|
||||
iio_device_unregister(indio_dev);
|
||||
pm_runtime_set_suspended(&client->dev);
|
||||
|
||||
return data->chip_spec->set_power_state(data, false);
|
||||
}
|
||||
|
||||
static int __maybe_unused vcnl4000_runtime_suspend(struct device *dev)
|
||||
{
|
||||
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
||||
struct vcnl4000_data *data = iio_priv(indio_dev);
|
||||
|
||||
return data->chip_spec->set_power_state(data, false);
|
||||
}
|
||||
|
||||
static int __maybe_unused vcnl4000_runtime_resume(struct device *dev)
|
||||
{
|
||||
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
||||
struct vcnl4000_data *data = iio_priv(indio_dev);
|
||||
|
||||
return data->chip_spec->set_power_state(data, true);
|
||||
}
|
||||
|
||||
static const struct dev_pm_ops vcnl4000_pm_ops = {
|
||||
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
|
||||
pm_runtime_force_resume)
|
||||
SET_RUNTIME_PM_OPS(vcnl4000_runtime_suspend,
|
||||
vcnl4000_runtime_resume, NULL)
|
||||
};
|
||||
|
||||
static struct i2c_driver vcnl4000_driver = {
|
||||
.driver = {
|
||||
.name = VCNL4000_DRV_NAME,
|
||||
.pm = &vcnl4000_pm_ops,
|
||||
.of_match_table = vcnl_4000_of_match,
|
||||
},
|
||||
.probe = vcnl4000_probe,
|
||||
.id_table = vcnl4000_id,
|
||||
.remove = vcnl4000_remove,
|
||||
};
|
||||
|
||||
module_i2c_driver(vcnl4000_driver);
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче