From e590d451908329fee0515a4ec397154a16cfc8c4 Mon Sep 17 00:00:00 2001 From: Beomho Seo Date: Thu, 17 Oct 2013 03:22:00 +0100 Subject: [PATCH] iio: cm36651: Add CM36651 proximity/light sensor This patch adds a new driver for Capella CM36651 proximity and RGB sensor. Signed-off-by: Beomho Seo Signed-off-by: Jonathan Cameron --- drivers/iio/light/Kconfig | 11 + drivers/iio/light/Makefile | 1 + drivers/iio/light/cm36651.c | 708 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 720 insertions(+) create mode 100644 drivers/iio/light/cm36651.c diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig index 0a25ae6b132e..f98c2b509254 100644 --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -27,6 +27,17 @@ config APDS9300 To compile this driver as a module, choose M here: the module will be called apds9300. +config CM36651 + depends on I2C + tristate "CM36651 driver" + help + Say Y here if you use cm36651. + This option enables proximity & RGB sensor using + Capella cm36651 device driver. + + To compile this driver as a module, choose M here: + the module will be called cm36651. + config GP2AP020A00F tristate "Sharp GP2AP020A00F Proximity/ALS sensor" depends on I2C diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile index cef590f2ff00..daa327f39e04 100644 --- a/drivers/iio/light/Makefile +++ b/drivers/iio/light/Makefile @@ -5,6 +5,7 @@ # When adding new entries keep the list in alphabetical order obj-$(CONFIG_ADJD_S311) += adjd_s311.o obj-$(CONFIG_APDS9300) += apds9300.o +obj-$(CONFIG_CM36651) += cm36651.o obj-$(CONFIG_GP2AP020A00F) += gp2ap020a00f.o obj-$(CONFIG_HID_SENSOR_ALS) += hid-sensor-als.o obj-$(CONFIG_SENSORS_LM3533) += lm3533-als.o diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c new file mode 100644 index 000000000000..21df57130018 --- /dev/null +++ b/drivers/iio/light/cm36651.c @@ -0,0 +1,708 @@ +/* + * Copyright (C) 2013 Samsung Electronics Co., Ltd. + * Author: Beomho Seo + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* 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 80000 usec */ +#define CM36651_CS_IT2 0x40 /* Integration time 160000 usec */ +#define CM36651_CS_IT3 0x80 /* Integration time 320000 usec */ +#define CM36651_CS_IT4 0xC0 /* Integration time 640000 usec */ + +/* 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 320 usec */ +#define CM36651_PS_IT2 0x10 /* Integration time 420 usec */ +#define CM36651_PS_IT3 0x20 /* Integration time 520 usec */ +#define CM36651_PS_IT4 0x30 /* Integration time 640 usec */ + +/* 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 "80000 160000 320000 640000" +#define CM36651_PS_INT_TIME_AVAIL "320 420 520 640" + +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 *val) +{ + switch (chan->type) { + case IIO_LIGHT: + if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT1) + *val = 80000; + else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT2) + *val = 160000; + else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT3) + *val = 320000; + else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT4) + *val = 640000; + else + return -EINVAL; + break; + case IIO_PROXIMITY: + if (cm36651->ps_int_time == CM36651_PS_IT1) + *val = 320; + else if (cm36651->ps_int_time == CM36651_PS_IT2) + *val = 420; + else if (cm36651->ps_int_time == CM36651_PS_IT3) + *val = 520; + else if (cm36651->ps_int_time == CM36651_PS_IT4) + *val = 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: + ret = cm36651_read_int_time(cm36651, chan, val); + 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, val); + 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, + u64 event_code, int *val) +{ + 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, + u64 event_code, int val) +{ + 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, + u64 event_code, 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, + u64 event_code) +{ + 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_chan_spec cm36651_channels[] = { + { + .type = IIO_PROXIMITY, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_INT_TIME), + .event_mask = IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_EITHER) + }, + 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); + cm36651->ara_client = i2c_new_dummy(client->adapter, CM36651_ARA); + 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_disable_reg; + } + + 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_disable_reg; + } + + 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_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); + + 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" }, + { } +}; + +static struct i2c_driver cm36651_driver = { + .driver = { + .name = "cm36651", + .of_match_table = of_match_ptr(cm36651_of_match), + .owner = THIS_MODULE, + }, + .probe = cm36651_probe, + .remove = cm36651_remove, + .id_table = cm36651_id, +}; + +module_i2c_driver(cm36651_driver); + +MODULE_AUTHOR("Beomho Seo "); +MODULE_DESCRIPTION("CM36651 proximity/ambient light sensor driver"); +MODULE_LICENSE("GPL v2"); -- 2.11.0