mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-17 15:56:45 +07:00
bc2b7dab62
Adds a new per-device sysfs attribute "current_timestamp_clock" to allow userspace to select a particular POSIX clock for buffered samples and events timestamping. Following clocks, as listed in clock_gettime(2), are supported: CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_MONOTONIC_RAW, CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_COARSE, CLOCK_BOOTTIME and CLOCK_TAI. Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com> Acked-by: Sanchayan Maity <maitysanchayan@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
698 lines
18 KiB
C
698 lines
18 KiB
C
/**
|
|
* Sensortek STK3310/STK3311 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 STK3310/STK3311. 7-bit I2C address: 0x48.
|
|
*/
|
|
|
|
#include <linux/acpi.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/iio/events.h>
|
|
#include <linux/iio/iio.h>
|
|
#include <linux/iio/sysfs.h>
|
|
|
|
#define STK3310_REG_STATE 0x00
|
|
#define STK3310_REG_PSCTRL 0x01
|
|
#define STK3310_REG_ALSCTRL 0x02
|
|
#define STK3310_REG_INT 0x04
|
|
#define STK3310_REG_THDH_PS 0x06
|
|
#define STK3310_REG_THDL_PS 0x08
|
|
#define STK3310_REG_FLAG 0x10
|
|
#define STK3310_REG_PS_DATA_MSB 0x11
|
|
#define STK3310_REG_PS_DATA_LSB 0x12
|
|
#define STK3310_REG_ALS_DATA_MSB 0x13
|
|
#define STK3310_REG_ALS_DATA_LSB 0x14
|
|
#define STK3310_REG_ID 0x3E
|
|
#define STK3310_MAX_REG 0x80
|
|
|
|
#define STK3310_STATE_EN_PS BIT(0)
|
|
#define STK3310_STATE_EN_ALS BIT(1)
|
|
#define STK3310_STATE_STANDBY 0x00
|
|
|
|
#define STK3310_CHIP_ID_VAL 0x13
|
|
#define STK3311_CHIP_ID_VAL 0x1D
|
|
#define STK3310_PSINT_EN 0x01
|
|
#define STK3310_PS_MAX_VAL 0xFFFF
|
|
|
|
#define STK3310_DRIVER_NAME "stk3310"
|
|
#define STK3310_REGMAP_NAME "stk3310_regmap"
|
|
#define STK3310_EVENT "stk3310_event"
|
|
|
|
#define STK3310_SCALE_AVAILABLE "6.4 1.6 0.4 0.1"
|
|
|
|
#define STK3310_IT_AVAILABLE \
|
|
"0.000185 0.000370 0.000741 0.001480 0.002960 0.005920 0.011840 " \
|
|
"0.023680 0.047360 0.094720 0.189440 0.378880 0.757760 1.515520 " \
|
|
"3.031040 6.062080"
|
|
|
|
#define STK3310_REGFIELD(name) \
|
|
do { \
|
|
data->reg_##name = \
|
|
devm_regmap_field_alloc(&client->dev, regmap, \
|
|
stk3310_reg_field_##name); \
|
|
if (IS_ERR(data->reg_##name)) { \
|
|
dev_err(&client->dev, "reg field alloc failed.\n"); \
|
|
return PTR_ERR(data->reg_##name); \
|
|
} \
|
|
} while (0)
|
|
|
|
static const struct reg_field stk3310_reg_field_state =
|
|
REG_FIELD(STK3310_REG_STATE, 0, 2);
|
|
static const struct reg_field stk3310_reg_field_als_gain =
|
|
REG_FIELD(STK3310_REG_ALSCTRL, 4, 5);
|
|
static const struct reg_field stk3310_reg_field_ps_gain =
|
|
REG_FIELD(STK3310_REG_PSCTRL, 4, 5);
|
|
static const struct reg_field stk3310_reg_field_als_it =
|
|
REG_FIELD(STK3310_REG_ALSCTRL, 0, 3);
|
|
static const struct reg_field stk3310_reg_field_ps_it =
|
|
REG_FIELD(STK3310_REG_PSCTRL, 0, 3);
|
|
static const struct reg_field stk3310_reg_field_int_ps =
|
|
REG_FIELD(STK3310_REG_INT, 0, 2);
|
|
static const struct reg_field stk3310_reg_field_flag_psint =
|
|
REG_FIELD(STK3310_REG_FLAG, 4, 4);
|
|
static const struct reg_field stk3310_reg_field_flag_nf =
|
|
REG_FIELD(STK3310_REG_FLAG, 0, 0);
|
|
|
|
/* Estimate maximum proximity values with regard to measurement scale. */
|
|
static const int stk3310_ps_max[4] = {
|
|
STK3310_PS_MAX_VAL / 640,
|
|
STK3310_PS_MAX_VAL / 160,
|
|
STK3310_PS_MAX_VAL / 40,
|
|
STK3310_PS_MAX_VAL / 10
|
|
};
|
|
|
|
static const int stk3310_scale_table[][2] = {
|
|
{6, 400000}, {1, 600000}, {0, 400000}, {0, 100000}
|
|
};
|
|
|
|
/* Integration time in seconds, microseconds */
|
|
static const int stk3310_it_table[][2] = {
|
|
{0, 185}, {0, 370}, {0, 741}, {0, 1480},
|
|
{0, 2960}, {0, 5920}, {0, 11840}, {0, 23680},
|
|
{0, 47360}, {0, 94720}, {0, 189440}, {0, 378880},
|
|
{0, 757760}, {1, 515520}, {3, 31040}, {6, 62080},
|
|
};
|
|
|
|
struct stk3310_data {
|
|
struct i2c_client *client;
|
|
struct mutex lock;
|
|
bool als_enabled;
|
|
bool ps_enabled;
|
|
u64 timestamp;
|
|
struct regmap *regmap;
|
|
struct regmap_field *reg_state;
|
|
struct regmap_field *reg_als_gain;
|
|
struct regmap_field *reg_ps_gain;
|
|
struct regmap_field *reg_als_it;
|
|
struct regmap_field *reg_ps_it;
|
|
struct regmap_field *reg_int_ps;
|
|
struct regmap_field *reg_flag_psint;
|
|
struct regmap_field *reg_flag_nf;
|
|
};
|
|
|
|
static const struct iio_event_spec stk3310_events[] = {
|
|
/* Proximity event */
|
|
{
|
|
.type = IIO_EV_TYPE_THRESH,
|
|
.dir = IIO_EV_DIR_RISING,
|
|
.mask_separate = BIT(IIO_EV_INFO_VALUE) |
|
|
BIT(IIO_EV_INFO_ENABLE),
|
|
},
|
|
/* Out-of-proximity event */
|
|
{
|
|
.type = IIO_EV_TYPE_THRESH,
|
|
.dir = IIO_EV_DIR_FALLING,
|
|
.mask_separate = BIT(IIO_EV_INFO_VALUE) |
|
|
BIT(IIO_EV_INFO_ENABLE),
|
|
},
|
|
};
|
|
|
|
static const struct iio_chan_spec stk3310_channels[] = {
|
|
{
|
|
.type = IIO_LIGHT,
|
|
.info_mask_separate =
|
|
BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_SCALE) |
|
|
BIT(IIO_CHAN_INFO_INT_TIME),
|
|
},
|
|
{
|
|
.type = IIO_PROXIMITY,
|
|
.info_mask_separate =
|
|
BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_SCALE) |
|
|
BIT(IIO_CHAN_INFO_INT_TIME),
|
|
.event_spec = stk3310_events,
|
|
.num_event_specs = ARRAY_SIZE(stk3310_events),
|
|
}
|
|
};
|
|
|
|
static IIO_CONST_ATTR(in_illuminance_scale_available, STK3310_SCALE_AVAILABLE);
|
|
|
|
static IIO_CONST_ATTR(in_proximity_scale_available, STK3310_SCALE_AVAILABLE);
|
|
|
|
static IIO_CONST_ATTR(in_illuminance_integration_time_available,
|
|
STK3310_IT_AVAILABLE);
|
|
|
|
static IIO_CONST_ATTR(in_proximity_integration_time_available,
|
|
STK3310_IT_AVAILABLE);
|
|
|
|
static struct attribute *stk3310_attributes[] = {
|
|
&iio_const_attr_in_illuminance_scale_available.dev_attr.attr,
|
|
&iio_const_attr_in_proximity_scale_available.dev_attr.attr,
|
|
&iio_const_attr_in_illuminance_integration_time_available.dev_attr.attr,
|
|
&iio_const_attr_in_proximity_integration_time_available.dev_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group stk3310_attribute_group = {
|
|
.attrs = stk3310_attributes
|
|
};
|
|
|
|
static int stk3310_get_index(const int table[][2], int table_size,
|
|
int val, int val2)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < table_size; i++) {
|
|
if (val == table[i][0] && val2 == table[i][1])
|
|
return i;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int stk3310_read_event(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir,
|
|
enum iio_event_info info,
|
|
int *val, int *val2)
|
|
{
|
|
u8 reg;
|
|
__be16 buf;
|
|
int ret;
|
|
struct stk3310_data *data = iio_priv(indio_dev);
|
|
|
|
if (info != IIO_EV_INFO_VALUE)
|
|
return -EINVAL;
|
|
|
|
/* Only proximity interrupts are implemented at the moment. */
|
|
if (dir == IIO_EV_DIR_RISING)
|
|
reg = STK3310_REG_THDH_PS;
|
|
else if (dir == IIO_EV_DIR_FALLING)
|
|
reg = STK3310_REG_THDL_PS;
|
|
else
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->lock);
|
|
ret = regmap_bulk_read(data->regmap, reg, &buf, 2);
|
|
mutex_unlock(&data->lock);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "register read failed\n");
|
|
return ret;
|
|
}
|
|
*val = be16_to_cpu(buf);
|
|
|
|
return IIO_VAL_INT;
|
|
}
|
|
|
|
static int stk3310_write_event(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir,
|
|
enum iio_event_info info,
|
|
int val, int val2)
|
|
{
|
|
u8 reg;
|
|
__be16 buf;
|
|
int ret;
|
|
unsigned int index;
|
|
struct stk3310_data *data = iio_priv(indio_dev);
|
|
struct i2c_client *client = data->client;
|
|
|
|
ret = regmap_field_read(data->reg_ps_gain, &index);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (val < 0 || val > stk3310_ps_max[index])
|
|
return -EINVAL;
|
|
|
|
if (dir == IIO_EV_DIR_RISING)
|
|
reg = STK3310_REG_THDH_PS;
|
|
else if (dir == IIO_EV_DIR_FALLING)
|
|
reg = STK3310_REG_THDL_PS;
|
|
else
|
|
return -EINVAL;
|
|
|
|
buf = cpu_to_be16(val);
|
|
ret = regmap_bulk_write(data->regmap, reg, &buf, 2);
|
|
if (ret < 0)
|
|
dev_err(&client->dev, "failed to set PS threshold!\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int stk3310_read_event_config(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir)
|
|
{
|
|
unsigned int event_val;
|
|
int ret;
|
|
struct stk3310_data *data = iio_priv(indio_dev);
|
|
|
|
ret = regmap_field_read(data->reg_int_ps, &event_val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return event_val;
|
|
}
|
|
|
|
static int stk3310_write_event_config(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir,
|
|
int state)
|
|
{
|
|
int ret;
|
|
struct stk3310_data *data = iio_priv(indio_dev);
|
|
struct i2c_client *client = data->client;
|
|
|
|
if (state < 0 || state > 7)
|
|
return -EINVAL;
|
|
|
|
/* Set INT_PS value */
|
|
mutex_lock(&data->lock);
|
|
ret = regmap_field_write(data->reg_int_ps, state);
|
|
if (ret < 0)
|
|
dev_err(&client->dev, "failed to set interrupt mode\n");
|
|
mutex_unlock(&data->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int stk3310_read_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan,
|
|
int *val, int *val2, long mask)
|
|
{
|
|
u8 reg;
|
|
__be16 buf;
|
|
int ret;
|
|
unsigned int index;
|
|
struct stk3310_data *data = iio_priv(indio_dev);
|
|
struct i2c_client *client = data->client;
|
|
|
|
if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY)
|
|
return -EINVAL;
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_RAW:
|
|
if (chan->type == IIO_LIGHT)
|
|
reg = STK3310_REG_ALS_DATA_MSB;
|
|
else
|
|
reg = STK3310_REG_PS_DATA_MSB;
|
|
|
|
mutex_lock(&data->lock);
|
|
ret = regmap_bulk_read(data->regmap, reg, &buf, 2);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "register read failed\n");
|
|
mutex_unlock(&data->lock);
|
|
return ret;
|
|
}
|
|
*val = be16_to_cpu(buf);
|
|
mutex_unlock(&data->lock);
|
|
return IIO_VAL_INT;
|
|
case IIO_CHAN_INFO_INT_TIME:
|
|
if (chan->type == IIO_LIGHT)
|
|
ret = regmap_field_read(data->reg_als_it, &index);
|
|
else
|
|
ret = regmap_field_read(data->reg_ps_it, &index);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
*val = stk3310_it_table[index][0];
|
|
*val2 = stk3310_it_table[index][1];
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
case IIO_CHAN_INFO_SCALE:
|
|
if (chan->type == IIO_LIGHT)
|
|
ret = regmap_field_read(data->reg_als_gain, &index);
|
|
else
|
|
ret = regmap_field_read(data->reg_ps_gain, &index);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
*val = stk3310_scale_table[index][0];
|
|
*val2 = stk3310_scale_table[index][1];
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int stk3310_write_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan,
|
|
int val, int val2, long mask)
|
|
{
|
|
int ret;
|
|
int index;
|
|
struct stk3310_data *data = iio_priv(indio_dev);
|
|
|
|
if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY)
|
|
return -EINVAL;
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_INT_TIME:
|
|
index = stk3310_get_index(stk3310_it_table,
|
|
ARRAY_SIZE(stk3310_it_table),
|
|
val, val2);
|
|
if (index < 0)
|
|
return -EINVAL;
|
|
mutex_lock(&data->lock);
|
|
if (chan->type == IIO_LIGHT)
|
|
ret = regmap_field_write(data->reg_als_it, index);
|
|
else
|
|
ret = regmap_field_write(data->reg_ps_it, index);
|
|
if (ret < 0)
|
|
dev_err(&data->client->dev,
|
|
"sensor configuration failed\n");
|
|
mutex_unlock(&data->lock);
|
|
return ret;
|
|
|
|
case IIO_CHAN_INFO_SCALE:
|
|
index = stk3310_get_index(stk3310_scale_table,
|
|
ARRAY_SIZE(stk3310_scale_table),
|
|
val, val2);
|
|
if (index < 0)
|
|
return -EINVAL;
|
|
mutex_lock(&data->lock);
|
|
if (chan->type == IIO_LIGHT)
|
|
ret = regmap_field_write(data->reg_als_gain, index);
|
|
else
|
|
ret = regmap_field_write(data->reg_ps_gain, index);
|
|
if (ret < 0)
|
|
dev_err(&data->client->dev,
|
|
"sensor configuration failed\n");
|
|
mutex_unlock(&data->lock);
|
|
return ret;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static const struct iio_info stk3310_info = {
|
|
.driver_module = THIS_MODULE,
|
|
.read_raw = stk3310_read_raw,
|
|
.write_raw = stk3310_write_raw,
|
|
.attrs = &stk3310_attribute_group,
|
|
.read_event_value = stk3310_read_event,
|
|
.write_event_value = stk3310_write_event,
|
|
.read_event_config = stk3310_read_event_config,
|
|
.write_event_config = stk3310_write_event_config,
|
|
};
|
|
|
|
static int stk3310_set_state(struct stk3310_data *data, u8 state)
|
|
{
|
|
int ret;
|
|
struct i2c_client *client = data->client;
|
|
|
|
/* 3-bit state; 0b100 is not supported. */
|
|
if (state > 7 || state == 4)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->lock);
|
|
ret = regmap_field_write(data->reg_state, state);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "failed to change sensor state\n");
|
|
} else if (state != STK3310_STATE_STANDBY) {
|
|
/* Don't reset the 'enabled' flags if we're going in standby */
|
|
data->ps_enabled = !!(state & STK3310_STATE_EN_PS);
|
|
data->als_enabled = !!(state & STK3310_STATE_EN_ALS);
|
|
}
|
|
mutex_unlock(&data->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int stk3310_init(struct iio_dev *indio_dev)
|
|
{
|
|
int ret;
|
|
int chipid;
|
|
u8 state;
|
|
struct stk3310_data *data = iio_priv(indio_dev);
|
|
struct i2c_client *client = data->client;
|
|
|
|
ret = regmap_read(data->regmap, STK3310_REG_ID, &chipid);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (chipid != STK3310_CHIP_ID_VAL &&
|
|
chipid != STK3311_CHIP_ID_VAL) {
|
|
dev_err(&client->dev, "invalid chip id: 0x%x\n", chipid);
|
|
return -ENODEV;
|
|
}
|
|
|
|
state = STK3310_STATE_EN_ALS | STK3310_STATE_EN_PS;
|
|
ret = stk3310_set_state(data, state);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "failed to enable sensor");
|
|
return ret;
|
|
}
|
|
|
|
/* Enable PS interrupts */
|
|
ret = regmap_field_write(data->reg_int_ps, STK3310_PSINT_EN);
|
|
if (ret < 0)
|
|
dev_err(&client->dev, "failed to enable interrupts!\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static bool stk3310_is_volatile_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case STK3310_REG_ALS_DATA_MSB:
|
|
case STK3310_REG_ALS_DATA_LSB:
|
|
case STK3310_REG_PS_DATA_LSB:
|
|
case STK3310_REG_PS_DATA_MSB:
|
|
case STK3310_REG_FLAG:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static struct regmap_config stk3310_regmap_config = {
|
|
.name = STK3310_REGMAP_NAME,
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.max_register = STK3310_MAX_REG,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
.volatile_reg = stk3310_is_volatile_reg,
|
|
};
|
|
|
|
static int stk3310_regmap_init(struct stk3310_data *data)
|
|
{
|
|
struct regmap *regmap;
|
|
struct i2c_client *client;
|
|
|
|
client = data->client;
|
|
regmap = devm_regmap_init_i2c(client, &stk3310_regmap_config);
|
|
if (IS_ERR(regmap)) {
|
|
dev_err(&client->dev, "regmap initialization failed.\n");
|
|
return PTR_ERR(regmap);
|
|
}
|
|
data->regmap = regmap;
|
|
|
|
STK3310_REGFIELD(state);
|
|
STK3310_REGFIELD(als_gain);
|
|
STK3310_REGFIELD(ps_gain);
|
|
STK3310_REGFIELD(als_it);
|
|
STK3310_REGFIELD(ps_it);
|
|
STK3310_REGFIELD(int_ps);
|
|
STK3310_REGFIELD(flag_psint);
|
|
STK3310_REGFIELD(flag_nf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t stk3310_irq_handler(int irq, void *private)
|
|
{
|
|
struct iio_dev *indio_dev = private;
|
|
struct stk3310_data *data = iio_priv(indio_dev);
|
|
|
|
data->timestamp = iio_get_time_ns(indio_dev);
|
|
|
|
return IRQ_WAKE_THREAD;
|
|
}
|
|
|
|
static irqreturn_t stk3310_irq_event_handler(int irq, void *private)
|
|
{
|
|
int ret;
|
|
unsigned int dir;
|
|
u64 event;
|
|
|
|
struct iio_dev *indio_dev = private;
|
|
struct stk3310_data *data = iio_priv(indio_dev);
|
|
|
|
/* Read FLAG_NF to figure out what threshold has been met. */
|
|
mutex_lock(&data->lock);
|
|
ret = regmap_field_read(data->reg_flag_nf, &dir);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "register read failed\n");
|
|
mutex_unlock(&data->lock);
|
|
return ret;
|
|
}
|
|
event = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1,
|
|
IIO_EV_TYPE_THRESH,
|
|
(dir ? IIO_EV_DIR_FALLING :
|
|
IIO_EV_DIR_RISING));
|
|
iio_push_event(indio_dev, event, data->timestamp);
|
|
|
|
/* Reset the interrupt flag */
|
|
ret = regmap_field_write(data->reg_flag_psint, 0);
|
|
if (ret < 0)
|
|
dev_err(&data->client->dev, "failed to reset interrupts\n");
|
|
mutex_unlock(&data->lock);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int stk3310_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
int ret;
|
|
struct iio_dev *indio_dev;
|
|
struct stk3310_data *data;
|
|
|
|
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
|
|
if (!indio_dev) {
|
|
dev_err(&client->dev, "iio allocation failed!\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
data = iio_priv(indio_dev);
|
|
data->client = client;
|
|
i2c_set_clientdata(client, indio_dev);
|
|
mutex_init(&data->lock);
|
|
|
|
ret = stk3310_regmap_init(data);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
indio_dev->dev.parent = &client->dev;
|
|
indio_dev->info = &stk3310_info;
|
|
indio_dev->name = STK3310_DRIVER_NAME;
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
|
indio_dev->channels = stk3310_channels;
|
|
indio_dev->num_channels = ARRAY_SIZE(stk3310_channels);
|
|
|
|
ret = stk3310_init(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (client->irq > 0) {
|
|
ret = devm_request_threaded_irq(&client->dev, client->irq,
|
|
stk3310_irq_handler,
|
|
stk3310_irq_event_handler,
|
|
IRQF_TRIGGER_FALLING |
|
|
IRQF_ONESHOT,
|
|
STK3310_EVENT, indio_dev);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "request irq %d failed\n",
|
|
client->irq);
|
|
goto err_standby;
|
|
}
|
|
}
|
|
|
|
ret = iio_device_register(indio_dev);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "device_register failed\n");
|
|
goto err_standby;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_standby:
|
|
stk3310_set_state(data, STK3310_STATE_STANDBY);
|
|
return ret;
|
|
}
|
|
|
|
static int stk3310_remove(struct i2c_client *client)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(client);
|
|
|
|
iio_device_unregister(indio_dev);
|
|
return stk3310_set_state(iio_priv(indio_dev), STK3310_STATE_STANDBY);
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int stk3310_suspend(struct device *dev)
|
|
{
|
|
struct stk3310_data *data;
|
|
|
|
data = iio_priv(i2c_get_clientdata(to_i2c_client(dev)));
|
|
|
|
return stk3310_set_state(data, STK3310_STATE_STANDBY);
|
|
}
|
|
|
|
static int stk3310_resume(struct device *dev)
|
|
{
|
|
u8 state = 0;
|
|
struct stk3310_data *data;
|
|
|
|
data = iio_priv(i2c_get_clientdata(to_i2c_client(dev)));
|
|
if (data->ps_enabled)
|
|
state |= STK3310_STATE_EN_PS;
|
|
if (data->als_enabled)
|
|
state |= STK3310_STATE_EN_ALS;
|
|
|
|
return stk3310_set_state(data, state);
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(stk3310_pm_ops, stk3310_suspend, stk3310_resume);
|
|
|
|
#define STK3310_PM_OPS (&stk3310_pm_ops)
|
|
#else
|
|
#define STK3310_PM_OPS NULL
|
|
#endif
|
|
|
|
static const struct i2c_device_id stk3310_i2c_id[] = {
|
|
{"STK3310", 0},
|
|
{"STK3311", 0},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, stk3310_i2c_id);
|
|
|
|
static const struct acpi_device_id stk3310_acpi_id[] = {
|
|
{"STK3310", 0},
|
|
{"STK3311", 0},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(acpi, stk3310_acpi_id);
|
|
|
|
static struct i2c_driver stk3310_driver = {
|
|
.driver = {
|
|
.name = "stk3310",
|
|
.pm = STK3310_PM_OPS,
|
|
.acpi_match_table = ACPI_PTR(stk3310_acpi_id),
|
|
},
|
|
.probe = stk3310_probe,
|
|
.remove = stk3310_remove,
|
|
.id_table = stk3310_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(stk3310_driver);
|
|
|
|
MODULE_AUTHOR("Tiberiu Breana <tiberiu.a.breana@intel.com>");
|
|
MODULE_DESCRIPTION("STK3310 Ambient Light and Proximity Sensor driver");
|
|
MODULE_LICENSE("GPL v2");
|