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alistair23-linux/drivers/iio/light/cm36651.c
Javier Martinez Canillas 119c4fce68 iio: Export OF module alias information in missing drivers 
The I2C core always reports the MODALIAS uevent as "i2c:<client name"
regardless if the driver was matched using the I2C id_table or the
of_match_table. So technically there's no need for a driver to export
the OF table since currently it's not used.

In fact, the I2C device ID table is mandatory for I2C drivers since
a i2c_device_id is passed to the driver's probe function even if the
I2C core used the OF table to match the driver.

And since the I2C core uses different tables, OF-only drivers needs to
have duplicated data that has to be kept in sync and also the dev node
compatible manufacturer prefix is stripped when reporting the MODALIAS.

To avoid the above, the I2C core behavior may be changed in the future
to not require an I2C device table for OF-only drivers and report the
OF module alias. So, it's better to also export the OF table to prevent
breaking module autoloading if that happens.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-08-02 16:36:00 +01:00

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/*
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
* Author: Beomho Seo <beomho.seo@samsung.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2, as published
* by the Free Software Foundation.
*/
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/mutex.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/regulator/consumer.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/events.h>
/* Slave address 0x19 for PS of 7 bit addressing protocol for I2C */
#define CM36651_I2C_ADDR_PS 0x19
/* Alert Response Address */
#define CM36651_ARA 0x0C
/* Ambient light sensor */
#define CM36651_CS_CONF1 0x00
#define CM36651_CS_CONF2 0x01
#define CM36651_ALS_WH_M 0x02
#define CM36651_ALS_WH_L 0x03
#define CM36651_ALS_WL_M 0x04
#define CM36651_ALS_WL_L 0x05
#define CM36651_CS_CONF3 0x06
#define CM36651_CS_CONF_REG_NUM 0x02
/* Proximity sensor */
#define CM36651_PS_CONF1 0x00
#define CM36651_PS_THD 0x01
#define CM36651_PS_CANC 0x02
#define CM36651_PS_CONF2 0x03
#define CM36651_PS_REG_NUM 0x04
/* CS_CONF1 command code */
#define CM36651_ALS_ENABLE 0x00
#define CM36651_ALS_DISABLE 0x01
#define CM36651_ALS_INT_EN 0x02
#define CM36651_ALS_THRES 0x04
/* CS_CONF2 command code */
#define CM36651_CS_CONF2_DEFAULT_BIT 0x08
/* CS_CONF3 channel integration time */
#define CM36651_CS_IT1 0x00 /* Integration time 80 msec */
#define CM36651_CS_IT2 0x40 /* Integration time 160 msec */
#define CM36651_CS_IT3 0x80 /* Integration time 320 msec */
#define CM36651_CS_IT4 0xC0 /* Integration time 640 msec */
/* PS_CONF1 command code */
#define CM36651_PS_ENABLE 0x00
#define CM36651_PS_DISABLE 0x01
#define CM36651_PS_INT_EN 0x02
#define CM36651_PS_PERS2 0x04
#define CM36651_PS_PERS3 0x08
#define CM36651_PS_PERS4 0x0C
/* PS_CONF1 command code: integration time */
#define CM36651_PS_IT1 0x00 /* Integration time 0.32 msec */
#define CM36651_PS_IT2 0x10 /* Integration time 0.42 msec */
#define CM36651_PS_IT3 0x20 /* Integration time 0.52 msec */
#define CM36651_PS_IT4 0x30 /* Integration time 0.64 msec */
/* PS_CONF1 command code: duty ratio */
#define CM36651_PS_DR1 0x00 /* Duty ratio 1/80 */
#define CM36651_PS_DR2 0x40 /* Duty ratio 1/160 */
#define CM36651_PS_DR3 0x80 /* Duty ratio 1/320 */
#define CM36651_PS_DR4 0xC0 /* Duty ratio 1/640 */
/* PS_THD command code */
#define CM36651_PS_INITIAL_THD 0x05
/* PS_CANC command code */
#define CM36651_PS_CANC_DEFAULT 0x00
/* PS_CONF2 command code */
#define CM36651_PS_HYS1 0x00
#define CM36651_PS_HYS2 0x01
#define CM36651_PS_SMART_PERS_EN 0x02
#define CM36651_PS_DIR_INT 0x04
#define CM36651_PS_MS 0x10
#define CM36651_CS_COLOR_NUM 4
#define CM36651_CLOSE_PROXIMITY 0x32
#define CM36651_FAR_PROXIMITY 0x33
#define CM36651_CS_INT_TIME_AVAIL "0.08 0.16 0.32 0.64"
#define CM36651_PS_INT_TIME_AVAIL "0.000320 0.000420 0.000520 0.000640"
enum cm36651_operation_mode {
CM36651_LIGHT_EN,
CM36651_PROXIMITY_EN,
CM36651_PROXIMITY_EV_EN,
};
enum cm36651_light_channel_idx {
CM36651_LIGHT_CHANNEL_IDX_RED,
CM36651_LIGHT_CHANNEL_IDX_GREEN,
CM36651_LIGHT_CHANNEL_IDX_BLUE,
CM36651_LIGHT_CHANNEL_IDX_CLEAR,
};
enum cm36651_command {
CM36651_CMD_READ_RAW_LIGHT,
CM36651_CMD_READ_RAW_PROXIMITY,
CM36651_CMD_PROX_EV_EN,
CM36651_CMD_PROX_EV_DIS,
};
static const u8 cm36651_cs_reg[CM36651_CS_CONF_REG_NUM] = {
CM36651_CS_CONF1,
CM36651_CS_CONF2,
};
static const u8 cm36651_ps_reg[CM36651_PS_REG_NUM] = {
CM36651_PS_CONF1,
CM36651_PS_THD,
CM36651_PS_CANC,
CM36651_PS_CONF2,
};
struct cm36651_data {
const struct cm36651_platform_data *pdata;
struct i2c_client *client;
struct i2c_client *ps_client;
struct i2c_client *ara_client;
struct mutex lock;
struct regulator *vled_reg;
unsigned long flags;
int cs_int_time[CM36651_CS_COLOR_NUM];
int ps_int_time;
u8 cs_ctrl_regs[CM36651_CS_CONF_REG_NUM];
u8 ps_ctrl_regs[CM36651_PS_REG_NUM];
u16 color[CM36651_CS_COLOR_NUM];
};
static int cm36651_setup_reg(struct cm36651_data *cm36651)
{
struct i2c_client *client = cm36651->client;
struct i2c_client *ps_client = cm36651->ps_client;
int i, ret;
/* CS initialization */
cm36651->cs_ctrl_regs[CM36651_CS_CONF1] = CM36651_ALS_ENABLE |
CM36651_ALS_THRES;
cm36651->cs_ctrl_regs[CM36651_CS_CONF2] = CM36651_CS_CONF2_DEFAULT_BIT;
for (i = 0; i < CM36651_CS_CONF_REG_NUM; i++) {
ret = i2c_smbus_write_byte_data(client, cm36651_cs_reg[i],
cm36651->cs_ctrl_regs[i]);
if (ret < 0)
return ret;
}
/* PS initialization */
cm36651->ps_ctrl_regs[CM36651_PS_CONF1] = CM36651_PS_ENABLE |
CM36651_PS_IT2;
cm36651->ps_ctrl_regs[CM36651_PS_THD] = CM36651_PS_INITIAL_THD;
cm36651->ps_ctrl_regs[CM36651_PS_CANC] = CM36651_PS_CANC_DEFAULT;
cm36651->ps_ctrl_regs[CM36651_PS_CONF2] = CM36651_PS_HYS2 |
CM36651_PS_DIR_INT | CM36651_PS_SMART_PERS_EN;
for (i = 0; i < CM36651_PS_REG_NUM; i++) {
ret = i2c_smbus_write_byte_data(ps_client, cm36651_ps_reg[i],
cm36651->ps_ctrl_regs[i]);
if (ret < 0)
return ret;
}
/* Set shutdown mode */
ret = i2c_smbus_write_byte_data(client, CM36651_CS_CONF1,
CM36651_ALS_DISABLE);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(cm36651->ps_client,
CM36651_PS_CONF1, CM36651_PS_DISABLE);
if (ret < 0)
return ret;
return 0;
}
static int cm36651_read_output(struct cm36651_data *cm36651,
struct iio_chan_spec const *chan, int *val)
{
struct i2c_client *client = cm36651->client;
int ret = -EINVAL;
switch (chan->type) {
case IIO_LIGHT:
*val = i2c_smbus_read_word_data(client, chan->address);
if (*val < 0)
return ret;
ret = i2c_smbus_write_byte_data(client, CM36651_CS_CONF1,
CM36651_ALS_DISABLE);
if (ret < 0)
return ret;
ret = IIO_VAL_INT;
break;
case IIO_PROXIMITY:
*val = i2c_smbus_read_byte(cm36651->ps_client);
if (*val < 0)
return ret;
if (!test_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags)) {
ret = i2c_smbus_write_byte_data(cm36651->ps_client,
CM36651_PS_CONF1, CM36651_PS_DISABLE);
if (ret < 0)
return ret;
}
ret = IIO_VAL_INT;
break;
default:
break;
}
return ret;
}
static irqreturn_t cm36651_irq_handler(int irq, void *data)
{
struct iio_dev *indio_dev = data;
struct cm36651_data *cm36651 = iio_priv(indio_dev);
struct i2c_client *client = cm36651->client;
int ev_dir, ret;
u64 ev_code;
/*
* The PS INT pin is an active low signal that PS INT move logic low
* when the object is detect. Once the MCU host received the PS INT
* "LOW" signal, the Host needs to read the data at Alert Response
* Address(ARA) to clear the PS INT signal. After clearing the PS
* INT pin, the PS INT signal toggles from low to high.
*/
ret = i2c_smbus_read_byte(cm36651->ara_client);
if (ret < 0) {
dev_err(&client->dev,
"%s: Data read failed: %d\n", __func__, ret);
return IRQ_HANDLED;
}
switch (ret) {
case CM36651_CLOSE_PROXIMITY:
ev_dir = IIO_EV_DIR_RISING;
break;
case CM36651_FAR_PROXIMITY:
ev_dir = IIO_EV_DIR_FALLING;
break;
default:
dev_err(&client->dev,
"%s: Data read wrong: %d\n", __func__, ret);
return IRQ_HANDLED;
}
ev_code = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY,
CM36651_CMD_READ_RAW_PROXIMITY,
IIO_EV_TYPE_THRESH, ev_dir);
iio_push_event(indio_dev, ev_code, iio_get_time_ns());
return IRQ_HANDLED;
}
static int cm36651_set_operation_mode(struct cm36651_data *cm36651, int cmd)
{
struct i2c_client *client = cm36651->client;
struct i2c_client *ps_client = cm36651->ps_client;
int ret = -EINVAL;
switch (cmd) {
case CM36651_CMD_READ_RAW_LIGHT:
ret = i2c_smbus_write_byte_data(client, CM36651_CS_CONF1,
cm36651->cs_ctrl_regs[CM36651_CS_CONF1]);
break;
case CM36651_CMD_READ_RAW_PROXIMITY:
if (test_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags))
return CM36651_PROXIMITY_EV_EN;
ret = i2c_smbus_write_byte_data(ps_client, CM36651_PS_CONF1,
cm36651->ps_ctrl_regs[CM36651_PS_CONF1]);
break;
case CM36651_CMD_PROX_EV_EN:
if (test_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags)) {
dev_err(&client->dev,
"Already proximity event enable state\n");
return ret;
}
set_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags);
ret = i2c_smbus_write_byte_data(ps_client,
cm36651_ps_reg[CM36651_PS_CONF1],
CM36651_PS_INT_EN | CM36651_PS_PERS2 | CM36651_PS_IT2);
if (ret < 0) {
dev_err(&client->dev, "Proximity enable event failed\n");
return ret;
}
break;
case CM36651_CMD_PROX_EV_DIS:
if (!test_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags)) {
dev_err(&client->dev,
"Already proximity event disable state\n");
return ret;
}
clear_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags);
ret = i2c_smbus_write_byte_data(ps_client,
CM36651_PS_CONF1, CM36651_PS_DISABLE);
break;
}
if (ret < 0)
dev_err(&client->dev, "Write register failed\n");
return ret;
}
static int cm36651_read_channel(struct cm36651_data *cm36651,
struct iio_chan_spec const *chan, int *val)
{
struct i2c_client *client = cm36651->client;
int cmd, ret;
if (chan->type == IIO_LIGHT)
cmd = CM36651_CMD_READ_RAW_LIGHT;
else if (chan->type == IIO_PROXIMITY)
cmd = CM36651_CMD_READ_RAW_PROXIMITY;
else
return -EINVAL;
ret = cm36651_set_operation_mode(cm36651, cmd);
if (ret < 0) {
dev_err(&client->dev, "CM36651 set operation mode failed\n");
return ret;
}
/* Delay for work after enable operation */
msleep(50);
ret = cm36651_read_output(cm36651, chan, val);
if (ret < 0) {
dev_err(&client->dev, "CM36651 read output failed\n");
return ret;
}
return ret;
}
static int cm36651_read_int_time(struct cm36651_data *cm36651,
struct iio_chan_spec const *chan, int *val2)
{
switch (chan->type) {
case IIO_LIGHT:
if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT1)
*val2 = 80000;
else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT2)
*val2 = 160000;
else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT3)
*val2 = 320000;
else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT4)
*val2 = 640000;
else
return -EINVAL;
break;
case IIO_PROXIMITY:
if (cm36651->ps_int_time == CM36651_PS_IT1)
*val2 = 320;
else if (cm36651->ps_int_time == CM36651_PS_IT2)
*val2 = 420;
else if (cm36651->ps_int_time == CM36651_PS_IT3)
*val2 = 520;
else if (cm36651->ps_int_time == CM36651_PS_IT4)
*val2 = 640;
else
return -EINVAL;
break;
default:
return -EINVAL;
}
return IIO_VAL_INT_PLUS_MICRO;
}
static int cm36651_write_int_time(struct cm36651_data *cm36651,
struct iio_chan_spec const *chan, int val)
{
struct i2c_client *client = cm36651->client;
struct i2c_client *ps_client = cm36651->ps_client;
int int_time, ret;
switch (chan->type) {
case IIO_LIGHT:
if (val == 80000)
int_time = CM36651_CS_IT1;
else if (val == 160000)
int_time = CM36651_CS_IT2;
else if (val == 320000)
int_time = CM36651_CS_IT3;
else if (val == 640000)
int_time = CM36651_CS_IT4;
else
return -EINVAL;
ret = i2c_smbus_write_byte_data(client, CM36651_CS_CONF3,
int_time >> 2 * (chan->address));
if (ret < 0) {
dev_err(&client->dev, "CS integration time write failed\n");
return ret;
}
cm36651->cs_int_time[chan->address] = int_time;
break;
case IIO_PROXIMITY:
if (val == 320)
int_time = CM36651_PS_IT1;
else if (val == 420)
int_time = CM36651_PS_IT2;
else if (val == 520)
int_time = CM36651_PS_IT3;
else if (val == 640)
int_time = CM36651_PS_IT4;
else
return -EINVAL;
ret = i2c_smbus_write_byte_data(ps_client,
CM36651_PS_CONF1, int_time);
if (ret < 0) {
dev_err(&client->dev, "PS integration time write failed\n");
return ret;
}
cm36651->ps_int_time = int_time;
break;
default:
return -EINVAL;
}
return ret;
}
static int cm36651_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int *val, int *val2, long mask)
{
struct cm36651_data *cm36651 = iio_priv(indio_dev);
int ret;
mutex_lock(&cm36651->lock);
switch (mask) {
case IIO_CHAN_INFO_RAW:
ret = cm36651_read_channel(cm36651, chan, val);
break;
case IIO_CHAN_INFO_INT_TIME:
*val = 0;
ret = cm36651_read_int_time(cm36651, chan, val2);
break;
default:
ret = -EINVAL;
}
mutex_unlock(&cm36651->lock);
return ret;
}
static int cm36651_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val, int val2, long mask)
{
struct cm36651_data *cm36651 = iio_priv(indio_dev);
struct i2c_client *client = cm36651->client;
int ret = -EINVAL;
if (mask == IIO_CHAN_INFO_INT_TIME) {
ret = cm36651_write_int_time(cm36651, chan, val2);
if (ret < 0)
dev_err(&client->dev, "Integration time write failed\n");
}
return ret;
}
static int cm36651_read_prox_thresh(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)
{
struct cm36651_data *cm36651 = iio_priv(indio_dev);
*val = cm36651->ps_ctrl_regs[CM36651_PS_THD];
return 0;
}
static int cm36651_write_prox_thresh(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)
{
struct cm36651_data *cm36651 = iio_priv(indio_dev);
struct i2c_client *client = cm36651->client;
int ret;
if (val < 3 || val > 255)
return -EINVAL;
cm36651->ps_ctrl_regs[CM36651_PS_THD] = val;
ret = i2c_smbus_write_byte_data(cm36651->ps_client, CM36651_PS_THD,
cm36651->ps_ctrl_regs[CM36651_PS_THD]);
if (ret < 0) {
dev_err(&client->dev, "PS threshold write failed: %d\n", ret);
return ret;
}
return 0;
}
static int cm36651_write_prox_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)
{
struct cm36651_data *cm36651 = iio_priv(indio_dev);
int cmd, ret = -EINVAL;
mutex_lock(&cm36651->lock);
cmd = state ? CM36651_CMD_PROX_EV_EN : CM36651_CMD_PROX_EV_DIS;
ret = cm36651_set_operation_mode(cm36651, cmd);
mutex_unlock(&cm36651->lock);
return ret;
}
static int cm36651_read_prox_event_config(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan,
enum iio_event_type type,
enum iio_event_direction dir)
{
struct cm36651_data *cm36651 = iio_priv(indio_dev);
int event_en;
mutex_lock(&cm36651->lock);
event_en = test_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags);
mutex_unlock(&cm36651->lock);
return event_en;
}
#define CM36651_LIGHT_CHANNEL(_color, _idx) { \
.type = IIO_LIGHT, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
BIT(IIO_CHAN_INFO_INT_TIME), \
.address = _idx, \
.modified = 1, \
.channel2 = IIO_MOD_LIGHT_##_color, \
} \
static const struct iio_event_spec cm36651_event_spec[] = {
{
.type = IIO_EV_TYPE_THRESH,
.dir = IIO_EV_DIR_EITHER,
.mask_separate = BIT(IIO_EV_INFO_VALUE) |
BIT(IIO_EV_INFO_ENABLE),
}
};
static const struct iio_chan_spec cm36651_channels[] = {
{
.type = IIO_PROXIMITY,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_INT_TIME),
.event_spec = cm36651_event_spec,
.num_event_specs = ARRAY_SIZE(cm36651_event_spec),
},
CM36651_LIGHT_CHANNEL(RED, CM36651_LIGHT_CHANNEL_IDX_RED),
CM36651_LIGHT_CHANNEL(GREEN, CM36651_LIGHT_CHANNEL_IDX_GREEN),
CM36651_LIGHT_CHANNEL(BLUE, CM36651_LIGHT_CHANNEL_IDX_BLUE),
CM36651_LIGHT_CHANNEL(CLEAR, CM36651_LIGHT_CHANNEL_IDX_CLEAR),
};
static IIO_CONST_ATTR(in_illuminance_integration_time_available,
CM36651_CS_INT_TIME_AVAIL);
static IIO_CONST_ATTR(in_proximity_integration_time_available,
CM36651_PS_INT_TIME_AVAIL);
static struct attribute *cm36651_attributes[] = {
&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 cm36651_attribute_group = {
.attrs = cm36651_attributes
};
static const struct iio_info cm36651_info = {
.driver_module = THIS_MODULE,
.read_raw = &cm36651_read_raw,
.write_raw = &cm36651_write_raw,
.read_event_value = &cm36651_read_prox_thresh,
.write_event_value = &cm36651_write_prox_thresh,
.read_event_config = &cm36651_read_prox_event_config,
.write_event_config = &cm36651_write_prox_event_config,
.attrs = &cm36651_attribute_group,
};
static int cm36651_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct cm36651_data *cm36651;
struct iio_dev *indio_dev;
int ret;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*cm36651));
if (!indio_dev)
return -ENOMEM;
cm36651 = iio_priv(indio_dev);
cm36651->vled_reg = devm_regulator_get(&client->dev, "vled");
if (IS_ERR(cm36651->vled_reg)) {
dev_err(&client->dev, "get regulator vled failed\n");
return PTR_ERR(cm36651->vled_reg);
}
ret = regulator_enable(cm36651->vled_reg);
if (ret) {
dev_err(&client->dev, "enable regulator vled failed\n");
return ret;
}
i2c_set_clientdata(client, indio_dev);
cm36651->client = client;
cm36651->ps_client = i2c_new_dummy(client->adapter,
CM36651_I2C_ADDR_PS);
if (!cm36651->ps_client) {
dev_err(&client->dev, "%s: new i2c device failed\n", __func__);
ret = -ENODEV;
goto error_disable_reg;
}
cm36651->ara_client = i2c_new_dummy(client->adapter, CM36651_ARA);
if (!cm36651->ara_client) {
dev_err(&client->dev, "%s: new i2c device failed\n", __func__);
ret = -ENODEV;
goto error_i2c_unregister_ps;
}
mutex_init(&cm36651->lock);
indio_dev->dev.parent = &client->dev;
indio_dev->channels = cm36651_channels;
indio_dev->num_channels = ARRAY_SIZE(cm36651_channels);
indio_dev->info = &cm36651_info;
indio_dev->name = id->name;
indio_dev->modes = INDIO_DIRECT_MODE;
ret = cm36651_setup_reg(cm36651);
if (ret) {
dev_err(&client->dev, "%s: register setup failed\n", __func__);
goto error_i2c_unregister_ara;
}
ret = request_threaded_irq(client->irq, NULL, cm36651_irq_handler,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
"cm36651", indio_dev);
if (ret) {
dev_err(&client->dev, "%s: request irq failed\n", __func__);
goto error_i2c_unregister_ara;
}
ret = iio_device_register(indio_dev);
if (ret) {
dev_err(&client->dev, "%s: regist device failed\n", __func__);
goto error_free_irq;
}
return 0;
error_free_irq:
free_irq(client->irq, indio_dev);
error_i2c_unregister_ara:
i2c_unregister_device(cm36651->ara_client);
error_i2c_unregister_ps:
i2c_unregister_device(cm36651->ps_client);
error_disable_reg:
regulator_disable(cm36651->vled_reg);
return ret;
}
static int cm36651_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);
struct cm36651_data *cm36651 = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
regulator_disable(cm36651->vled_reg);
free_irq(client->irq, indio_dev);
i2c_unregister_device(cm36651->ps_client);
i2c_unregister_device(cm36651->ara_client);
return 0;
}
static const struct i2c_device_id cm36651_id[] = {
{ "cm36651", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, cm36651_id);
static const struct of_device_id cm36651_of_match[] = {
{ .compatible = "capella,cm36651" },
{ }
};
MODULE_DEVICE_TABLE(of, cm36651_of_match);
static struct i2c_driver cm36651_driver = {
.driver = {
.name = "cm36651",
.of_match_table = cm36651_of_match,
},
.probe = cm36651_probe,
.remove = cm36651_remove,
.id_table = cm36651_id,
};
module_i2c_driver(cm36651_driver);
MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
MODULE_DESCRIPTION("CM36651 proximity/ambient light sensor driver");
MODULE_LICENSE("GPL v2");
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