2015-06-17 03:42:51 -06:00
|
|
|
/*
|
|
|
|
* RPR-0521 ROHM Ambient Light and Proximity Sensor
|
|
|
|
*
|
|
|
|
* Copyright (c) 2015, Intel Corporation.
|
|
|
|
*
|
|
|
|
* This file is subject to the terms and conditions of version 2 of
|
|
|
|
* the GNU General Public License. See the file COPYING in the main
|
|
|
|
* directory of this archive for more details.
|
|
|
|
*
|
|
|
|
* IIO driver for RPR-0521RS (7-bit I2C slave address 0x38).
|
|
|
|
*
|
|
|
|
* TODO: illuminance channel, PM support, buffer
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/i2c.h>
|
|
|
|
#include <linux/regmap.h>
|
|
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/acpi.h>
|
|
|
|
|
|
|
|
#include <linux/iio/iio.h>
|
|
|
|
#include <linux/iio/sysfs.h>
|
|
|
|
#include <linux/pm_runtime.h>
|
|
|
|
|
|
|
|
#define RPR0521_REG_SYSTEM_CTRL 0x40
|
|
|
|
#define RPR0521_REG_MODE_CTRL 0x41
|
|
|
|
#define RPR0521_REG_ALS_CTRL 0x42
|
|
|
|
#define RPR0521_REG_PXS_CTRL 0x43
|
|
|
|
#define RPR0521_REG_PXS_DATA 0x44 /* 16-bit, little endian */
|
|
|
|
#define RPR0521_REG_ALS_DATA0 0x46 /* 16-bit, little endian */
|
|
|
|
#define RPR0521_REG_ALS_DATA1 0x48 /* 16-bit, little endian */
|
|
|
|
#define RPR0521_REG_ID 0x92
|
|
|
|
|
|
|
|
#define RPR0521_MODE_ALS_MASK BIT(7)
|
|
|
|
#define RPR0521_MODE_PXS_MASK BIT(6)
|
|
|
|
#define RPR0521_MODE_MEAS_TIME_MASK GENMASK(3, 0)
|
|
|
|
#define RPR0521_ALS_DATA0_GAIN_MASK GENMASK(5, 4)
|
|
|
|
#define RPR0521_ALS_DATA0_GAIN_SHIFT 4
|
|
|
|
#define RPR0521_ALS_DATA1_GAIN_MASK GENMASK(3, 2)
|
|
|
|
#define RPR0521_ALS_DATA1_GAIN_SHIFT 2
|
|
|
|
#define RPR0521_PXS_GAIN_MASK GENMASK(5, 4)
|
|
|
|
#define RPR0521_PXS_GAIN_SHIFT 4
|
|
|
|
|
|
|
|
#define RPR0521_MODE_ALS_ENABLE BIT(7)
|
|
|
|
#define RPR0521_MODE_ALS_DISABLE 0x00
|
|
|
|
#define RPR0521_MODE_PXS_ENABLE BIT(6)
|
|
|
|
#define RPR0521_MODE_PXS_DISABLE 0x00
|
|
|
|
|
|
|
|
#define RPR0521_MANUFACT_ID 0xE0
|
|
|
|
#define RPR0521_DEFAULT_MEAS_TIME 0x06 /* ALS - 100ms, PXS - 100ms */
|
|
|
|
|
|
|
|
#define RPR0521_DRV_NAME "RPR0521"
|
|
|
|
#define RPR0521_REGMAP_NAME "rpr0521_regmap"
|
|
|
|
|
|
|
|
#define RPR0521_SLEEP_DELAY_MS 2000
|
|
|
|
|
|
|
|
#define RPR0521_ALS_SCALE_AVAIL "0.007812 0.015625 0.5 1"
|
|
|
|
#define RPR0521_PXS_SCALE_AVAIL "0.125 0.5 1"
|
|
|
|
|
|
|
|
struct rpr0521_gain {
|
|
|
|
int scale;
|
|
|
|
int uscale;
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct rpr0521_gain rpr0521_als_gain[4] = {
|
|
|
|
{1, 0}, /* x1 */
|
|
|
|
{0, 500000}, /* x2 */
|
|
|
|
{0, 15625}, /* x64 */
|
|
|
|
{0, 7812}, /* x128 */
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct rpr0521_gain rpr0521_pxs_gain[3] = {
|
|
|
|
{1, 0}, /* x1 */
|
|
|
|
{0, 500000}, /* x2 */
|
|
|
|
{0, 125000}, /* x4 */
|
|
|
|
};
|
|
|
|
|
|
|
|
enum rpr0521_channel {
|
|
|
|
RPR0521_CHAN_ALS_DATA0,
|
|
|
|
RPR0521_CHAN_ALS_DATA1,
|
|
|
|
RPR0521_CHAN_PXS,
|
|
|
|
};
|
|
|
|
|
|
|
|
struct rpr0521_reg_desc {
|
|
|
|
u8 address;
|
|
|
|
u8 device_mask;
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct rpr0521_reg_desc rpr0521_data_reg[] = {
|
|
|
|
[RPR0521_CHAN_ALS_DATA0] = {
|
|
|
|
.address = RPR0521_REG_ALS_DATA0,
|
|
|
|
.device_mask = RPR0521_MODE_ALS_MASK,
|
|
|
|
},
|
|
|
|
[RPR0521_CHAN_ALS_DATA1] = {
|
|
|
|
.address = RPR0521_REG_ALS_DATA1,
|
|
|
|
.device_mask = RPR0521_MODE_ALS_MASK,
|
|
|
|
},
|
|
|
|
[RPR0521_CHAN_PXS] = {
|
|
|
|
.address = RPR0521_REG_PXS_DATA,
|
|
|
|
.device_mask = RPR0521_MODE_PXS_MASK,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct rpr0521_gain_info {
|
|
|
|
u8 reg;
|
|
|
|
u8 mask;
|
|
|
|
u8 shift;
|
|
|
|
const struct rpr0521_gain *gain;
|
|
|
|
int size;
|
|
|
|
} rpr0521_gain[] = {
|
|
|
|
[RPR0521_CHAN_ALS_DATA0] = {
|
|
|
|
.reg = RPR0521_REG_ALS_CTRL,
|
|
|
|
.mask = RPR0521_ALS_DATA0_GAIN_MASK,
|
|
|
|
.shift = RPR0521_ALS_DATA0_GAIN_SHIFT,
|
|
|
|
.gain = rpr0521_als_gain,
|
|
|
|
.size = ARRAY_SIZE(rpr0521_als_gain),
|
|
|
|
},
|
|
|
|
[RPR0521_CHAN_ALS_DATA1] = {
|
|
|
|
.reg = RPR0521_REG_ALS_CTRL,
|
|
|
|
.mask = RPR0521_ALS_DATA1_GAIN_MASK,
|
|
|
|
.shift = RPR0521_ALS_DATA1_GAIN_SHIFT,
|
|
|
|
.gain = rpr0521_als_gain,
|
|
|
|
.size = ARRAY_SIZE(rpr0521_als_gain),
|
|
|
|
},
|
|
|
|
[RPR0521_CHAN_PXS] = {
|
|
|
|
.reg = RPR0521_REG_PXS_CTRL,
|
|
|
|
.mask = RPR0521_PXS_GAIN_MASK,
|
|
|
|
.shift = RPR0521_PXS_GAIN_SHIFT,
|
|
|
|
.gain = rpr0521_pxs_gain,
|
|
|
|
.size = ARRAY_SIZE(rpr0521_pxs_gain),
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
struct rpr0521_data {
|
|
|
|
struct i2c_client *client;
|
|
|
|
|
|
|
|
/* protect device params updates (e.g state, gain) */
|
|
|
|
struct mutex lock;
|
|
|
|
|
|
|
|
/* device active status */
|
|
|
|
bool als_dev_en;
|
|
|
|
bool pxs_dev_en;
|
|
|
|
|
|
|
|
/* optimize runtime pm ops - enable device only if needed */
|
|
|
|
bool als_ps_need_en;
|
|
|
|
bool pxs_ps_need_en;
|
|
|
|
|
|
|
|
struct regmap *regmap;
|
|
|
|
};
|
|
|
|
|
|
|
|
static IIO_CONST_ATTR(in_intensity_scale_available, RPR0521_ALS_SCALE_AVAIL);
|
|
|
|
static IIO_CONST_ATTR(in_proximity_scale_available, RPR0521_PXS_SCALE_AVAIL);
|
|
|
|
|
|
|
|
static struct attribute *rpr0521_attributes[] = {
|
|
|
|
&iio_const_attr_in_intensity_scale_available.dev_attr.attr,
|
|
|
|
&iio_const_attr_in_proximity_scale_available.dev_attr.attr,
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct attribute_group rpr0521_attribute_group = {
|
|
|
|
.attrs = rpr0521_attributes,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct iio_chan_spec rpr0521_channels[] = {
|
|
|
|
{
|
|
|
|
.type = IIO_INTENSITY,
|
|
|
|
.modified = 1,
|
|
|
|
.address = RPR0521_CHAN_ALS_DATA0,
|
|
|
|
.channel2 = IIO_MOD_LIGHT_BOTH,
|
|
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
|
|
BIT(IIO_CHAN_INFO_SCALE),
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.type = IIO_INTENSITY,
|
|
|
|
.modified = 1,
|
|
|
|
.address = RPR0521_CHAN_ALS_DATA1,
|
|
|
|
.channel2 = IIO_MOD_LIGHT_IR,
|
|
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
|
|
BIT(IIO_CHAN_INFO_SCALE),
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.type = IIO_PROXIMITY,
|
|
|
|
.address = RPR0521_CHAN_PXS,
|
|
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
|
|
BIT(IIO_CHAN_INFO_SCALE),
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
static int rpr0521_als_enable(struct rpr0521_data *data, u8 status)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = regmap_update_bits(data->regmap, RPR0521_REG_MODE_CTRL,
|
|
|
|
RPR0521_MODE_ALS_MASK,
|
|
|
|
status);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
data->als_dev_en = true;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rpr0521_pxs_enable(struct rpr0521_data *data, u8 status)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = regmap_update_bits(data->regmap, RPR0521_REG_MODE_CTRL,
|
|
|
|
RPR0521_MODE_PXS_MASK,
|
|
|
|
status);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
data->pxs_dev_en = true;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* rpr0521_set_power_state - handles runtime PM state and sensors enabled status
|
|
|
|
*
|
|
|
|
* @data: rpr0521 device private data
|
|
|
|
* @on: state to be set for devices in @device_mask
|
|
|
|
* @device_mask: bitmask specifying for which device we need to update @on state
|
|
|
|
*
|
|
|
|
* We rely on rpr0521_runtime_resume to enable our @device_mask devices, but
|
|
|
|
* if (for example) PXS was enabled (pxs_dev_en = true) by a previous call to
|
|
|
|
* rpr0521_runtime_resume and we want to enable ALS we MUST set ALS enable
|
|
|
|
* bit of RPR0521_REG_MODE_CTRL here because rpr0521_runtime_resume will not
|
|
|
|
* be called twice.
|
|
|
|
*/
|
|
|
|
static int rpr0521_set_power_state(struct rpr0521_data *data, bool on,
|
|
|
|
u8 device_mask)
|
|
|
|
{
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
int ret;
|
|
|
|
u8 update_mask = 0;
|
|
|
|
|
|
|
|
if (device_mask & RPR0521_MODE_ALS_MASK) {
|
|
|
|
if (on && !data->als_ps_need_en && data->pxs_dev_en)
|
|
|
|
update_mask |= RPR0521_MODE_ALS_MASK;
|
|
|
|
else
|
|
|
|
data->als_ps_need_en = on;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (device_mask & RPR0521_MODE_PXS_MASK) {
|
|
|
|
if (on && !data->pxs_ps_need_en && data->als_dev_en)
|
|
|
|
update_mask |= RPR0521_MODE_PXS_MASK;
|
|
|
|
else
|
|
|
|
data->pxs_ps_need_en = on;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (update_mask) {
|
|
|
|
ret = regmap_update_bits(data->regmap, RPR0521_REG_MODE_CTRL,
|
|
|
|
update_mask, update_mask);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (on) {
|
|
|
|
ret = pm_runtime_get_sync(&data->client->dev);
|
|
|
|
} else {
|
|
|
|
pm_runtime_mark_last_busy(&data->client->dev);
|
|
|
|
ret = pm_runtime_put_autosuspend(&data->client->dev);
|
|
|
|
}
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&data->client->dev,
|
|
|
|
"Failed: rpr0521_set_power_state for %d, ret %d\n",
|
|
|
|
on, ret);
|
|
|
|
if (on)
|
|
|
|
pm_runtime_put_noidle(&data->client->dev);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rpr0521_get_gain(struct rpr0521_data *data, int chan,
|
|
|
|
int *val, int *val2)
|
|
|
|
{
|
|
|
|
int ret, reg, idx;
|
|
|
|
|
|
|
|
ret = regmap_read(data->regmap, rpr0521_gain[chan].reg, ®);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
idx = (rpr0521_gain[chan].mask & reg) >> rpr0521_gain[chan].shift;
|
|
|
|
*val = rpr0521_gain[chan].gain[idx].scale;
|
|
|
|
*val2 = rpr0521_gain[chan].gain[idx].uscale;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rpr0521_set_gain(struct rpr0521_data *data, int chan,
|
|
|
|
int val, int val2)
|
|
|
|
{
|
|
|
|
int i, idx = -EINVAL;
|
|
|
|
|
|
|
|
/* get gain index */
|
|
|
|
for (i = 0; i < rpr0521_gain[chan].size; i++)
|
|
|
|
if (val == rpr0521_gain[chan].gain[i].scale &&
|
|
|
|
val2 == rpr0521_gain[chan].gain[i].uscale) {
|
|
|
|
idx = i;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (idx < 0)
|
|
|
|
return idx;
|
|
|
|
|
|
|
|
return regmap_update_bits(data->regmap, rpr0521_gain[chan].reg,
|
|
|
|
rpr0521_gain[chan].mask,
|
|
|
|
idx << rpr0521_gain[chan].shift);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rpr0521_read_raw(struct iio_dev *indio_dev,
|
|
|
|
struct iio_chan_spec const *chan, int *val,
|
|
|
|
int *val2, long mask)
|
|
|
|
{
|
|
|
|
struct rpr0521_data *data = iio_priv(indio_dev);
|
|
|
|
int ret;
|
|
|
|
u8 device_mask;
|
|
|
|
__le16 raw_data;
|
|
|
|
|
|
|
|
switch (mask) {
|
|
|
|
case IIO_CHAN_INFO_RAW:
|
|
|
|
if (chan->type != IIO_INTENSITY && chan->type != IIO_PROXIMITY)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
device_mask = rpr0521_data_reg[chan->address].device_mask;
|
|
|
|
|
|
|
|
mutex_lock(&data->lock);
|
|
|
|
ret = rpr0521_set_power_state(data, true, device_mask);
|
|
|
|
if (ret < 0) {
|
|
|
|
mutex_unlock(&data->lock);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = regmap_bulk_read(data->regmap,
|
|
|
|
rpr0521_data_reg[chan->address].address,
|
|
|
|
&raw_data, 2);
|
|
|
|
if (ret < 0) {
|
|
|
|
rpr0521_set_power_state(data, false, device_mask);
|
|
|
|
mutex_unlock(&data->lock);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = rpr0521_set_power_state(data, false, device_mask);
|
|
|
|
mutex_unlock(&data->lock);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
*val = le16_to_cpu(raw_data);
|
|
|
|
|
|
|
|
return IIO_VAL_INT;
|
|
|
|
case IIO_CHAN_INFO_SCALE:
|
|
|
|
mutex_lock(&data->lock);
|
|
|
|
ret = rpr0521_get_gain(data, chan->address, val, val2);
|
|
|
|
mutex_unlock(&data->lock);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rpr0521_write_raw(struct iio_dev *indio_dev,
|
|
|
|
struct iio_chan_spec const *chan, int val,
|
|
|
|
int val2, long mask)
|
|
|
|
{
|
|
|
|
struct rpr0521_data *data = iio_priv(indio_dev);
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
switch (mask) {
|
|
|
|
case IIO_CHAN_INFO_SCALE:
|
|
|
|
mutex_lock(&data->lock);
|
|
|
|
ret = rpr0521_set_gain(data, chan->address, val, val2);
|
|
|
|
mutex_unlock(&data->lock);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct iio_info rpr0521_info = {
|
|
|
|
.driver_module = THIS_MODULE,
|
|
|
|
.read_raw = rpr0521_read_raw,
|
|
|
|
.write_raw = rpr0521_write_raw,
|
|
|
|
.attrs = &rpr0521_attribute_group,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int rpr0521_init(struct rpr0521_data *data)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
int id;
|
|
|
|
|
|
|
|
ret = regmap_read(data->regmap, RPR0521_REG_ID, &id);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&data->client->dev, "Failed to read REG_ID register\n");
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (id != RPR0521_MANUFACT_ID) {
|
|
|
|
dev_err(&data->client->dev, "Wrong id, got %x, expected %x\n",
|
|
|
|
id, RPR0521_MANUFACT_ID);
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* set default measurement time - 100 ms for both ALS and PS */
|
|
|
|
ret = regmap_update_bits(data->regmap, RPR0521_REG_MODE_CTRL,
|
|
|
|
RPR0521_MODE_MEAS_TIME_MASK,
|
|
|
|
RPR0521_DEFAULT_MEAS_TIME);
|
|
|
|
if (ret) {
|
|
|
|
pr_err("regmap_update_bits returned %d\n", ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = rpr0521_als_enable(data, RPR0521_MODE_ALS_ENABLE);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
ret = rpr0521_pxs_enable(data, RPR0521_MODE_PXS_ENABLE);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rpr0521_poweroff(struct rpr0521_data *data)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = regmap_update_bits(data->regmap, RPR0521_REG_MODE_CTRL,
|
|
|
|
RPR0521_MODE_ALS_MASK |
|
|
|
|
RPR0521_MODE_PXS_MASK,
|
|
|
|
RPR0521_MODE_ALS_DISABLE |
|
|
|
|
RPR0521_MODE_PXS_DISABLE);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
data->als_dev_en = false;
|
|
|
|
data->pxs_dev_en = false;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool rpr0521_is_volatile_reg(struct device *dev, unsigned int reg)
|
|
|
|
{
|
|
|
|
switch (reg) {
|
|
|
|
case RPR0521_REG_MODE_CTRL:
|
|
|
|
case RPR0521_REG_ALS_CTRL:
|
|
|
|
case RPR0521_REG_PXS_CTRL:
|
|
|
|
return false;
|
|
|
|
default:
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct regmap_config rpr0521_regmap_config = {
|
|
|
|
.name = RPR0521_REGMAP_NAME,
|
|
|
|
|
|
|
|
.reg_bits = 8,
|
|
|
|
.val_bits = 8,
|
|
|
|
|
|
|
|
.max_register = RPR0521_REG_ID,
|
|
|
|
.cache_type = REGCACHE_RBTREE,
|
|
|
|
.volatile_reg = rpr0521_is_volatile_reg,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int rpr0521_probe(struct i2c_client *client,
|
|
|
|
const struct i2c_device_id *id)
|
|
|
|
{
|
|
|
|
struct rpr0521_data *data;
|
|
|
|
struct iio_dev *indio_dev;
|
|
|
|
struct regmap *regmap;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
|
|
|
|
if (!indio_dev)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
regmap = devm_regmap_init_i2c(client, &rpr0521_regmap_config);
|
|
|
|
if (IS_ERR(regmap)) {
|
|
|
|
dev_err(&client->dev, "regmap_init failed!\n");
|
|
|
|
return PTR_ERR(regmap);
|
|
|
|
}
|
|
|
|
|
|
|
|
data = iio_priv(indio_dev);
|
|
|
|
i2c_set_clientdata(client, indio_dev);
|
|
|
|
data->client = client;
|
|
|
|
data->regmap = regmap;
|
|
|
|
|
|
|
|
mutex_init(&data->lock);
|
|
|
|
|
|
|
|
indio_dev->dev.parent = &client->dev;
|
|
|
|
indio_dev->info = &rpr0521_info;
|
|
|
|
indio_dev->name = RPR0521_DRV_NAME;
|
|
|
|
indio_dev->channels = rpr0521_channels;
|
|
|
|
indio_dev->num_channels = ARRAY_SIZE(rpr0521_channels);
|
|
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
|
|
|
|
|
|
|
ret = rpr0521_init(data);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&client->dev, "rpr0521 chip init failed\n");
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = pm_runtime_set_active(&client->dev);
|
|
|
|
if (ret < 0)
|
2015-11-05 07:25:29 -07:00
|
|
|
return ret;
|
2015-06-17 03:42:51 -06:00
|
|
|
|
|
|
|
pm_runtime_enable(&client->dev);
|
|
|
|
pm_runtime_set_autosuspend_delay(&client->dev, RPR0521_SLEEP_DELAY_MS);
|
|
|
|
pm_runtime_use_autosuspend(&client->dev);
|
|
|
|
|
2015-11-05 07:25:29 -07:00
|
|
|
return iio_device_register(indio_dev);
|
2015-06-17 03:42:51 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static int rpr0521_remove(struct i2c_client *client)
|
|
|
|
{
|
|
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(client);
|
|
|
|
|
2015-11-05 07:25:29 -07:00
|
|
|
iio_device_unregister(indio_dev);
|
|
|
|
|
2015-06-17 03:42:51 -06:00
|
|
|
pm_runtime_disable(&client->dev);
|
|
|
|
pm_runtime_set_suspended(&client->dev);
|
|
|
|
pm_runtime_put_noidle(&client->dev);
|
|
|
|
|
|
|
|
rpr0521_poweroff(iio_priv(indio_dev));
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int rpr0521_runtime_suspend(struct device *dev)
|
|
|
|
{
|
|
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
|
|
struct rpr0521_data *data = iio_priv(indio_dev);
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
/* disable channels and sets {als,pxs}_dev_en to false */
|
|
|
|
mutex_lock(&data->lock);
|
|
|
|
ret = rpr0521_poweroff(data);
|
|
|
|
mutex_unlock(&data->lock);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rpr0521_runtime_resume(struct device *dev)
|
|
|
|
{
|
|
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
|
|
struct rpr0521_data *data = iio_priv(indio_dev);
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (data->als_ps_need_en) {
|
|
|
|
ret = rpr0521_als_enable(data, RPR0521_MODE_ALS_ENABLE);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
data->als_ps_need_en = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (data->pxs_ps_need_en) {
|
|
|
|
ret = rpr0521_pxs_enable(data, RPR0521_MODE_PXS_ENABLE);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
data->pxs_ps_need_en = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static const struct dev_pm_ops rpr0521_pm_ops = {
|
|
|
|
SET_RUNTIME_PM_OPS(rpr0521_runtime_suspend,
|
|
|
|
rpr0521_runtime_resume, NULL)
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct acpi_device_id rpr0521_acpi_match[] = {
|
|
|
|
{"RPR0521", 0},
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(acpi, rpr0521_acpi_match);
|
|
|
|
|
|
|
|
static const struct i2c_device_id rpr0521_id[] = {
|
|
|
|
{"rpr0521", 0},
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
|
|
|
|
MODULE_DEVICE_TABLE(i2c, rpr0521_id);
|
|
|
|
|
|
|
|
static struct i2c_driver rpr0521_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = RPR0521_DRV_NAME,
|
|
|
|
.pm = &rpr0521_pm_ops,
|
|
|
|
.acpi_match_table = ACPI_PTR(rpr0521_acpi_match),
|
|
|
|
},
|
|
|
|
.probe = rpr0521_probe,
|
|
|
|
.remove = rpr0521_remove,
|
|
|
|
.id_table = rpr0521_id,
|
|
|
|
};
|
|
|
|
|
|
|
|
module_i2c_driver(rpr0521_driver);
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com>");
|
|
|
|
MODULE_DESCRIPTION("RPR0521 ROHM Ambient Light and Proximity Sensor driver");
|
|
|
|
MODULE_LICENSE("GPL v2");
|