diff options
Diffstat (limited to 'drivers/staging/iio/light/isl29018.c')
| -rw-r--r-- | drivers/staging/iio/light/isl29018.c | 834 |
1 files changed, 0 insertions, 834 deletions
diff --git a/drivers/staging/iio/light/isl29018.c b/drivers/staging/iio/light/isl29018.c deleted file mode 100644 index a767a43c995c..000000000000 --- a/drivers/staging/iio/light/isl29018.c +++ /dev/null @@ -1,834 +0,0 @@ -/* - * A iio driver for the light sensor ISL 29018/29023/29035. - * - * IIO driver for monitoring ambient light intensity in luxi, proximity - * sensing and infrared sensing. - * - * Copyright (c) 2010, NVIDIA Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - */ - -#include <linux/module.h> -#include <linux/i2c.h> -#include <linux/err.h> -#include <linux/mutex.h> -#include <linux/delay.h> -#include <linux/regmap.h> -#include <linux/slab.h> -#include <linux/iio/iio.h> -#include <linux/iio/sysfs.h> -#include <linux/acpi.h> - -#define ISL29018_CONV_TIME_MS 100 - -#define ISL29018_REG_ADD_COMMAND1 0x00 -#define ISL29018_CMD1_OPMODE_SHIFT 5 -#define ISL29018_CMD1_OPMODE_MASK (7 << ISL29018_CMD1_OPMODE_SHIFT) -#define ISL29018_CMD1_OPMODE_POWER_DOWN 0 -#define ISL29018_CMD1_OPMODE_ALS_ONCE 1 -#define ISL29018_CMD1_OPMODE_IR_ONCE 2 -#define ISL29018_CMD1_OPMODE_PROX_ONCE 3 - -#define ISL29018_REG_ADD_COMMAND2 0x01 -#define ISL29018_CMD2_RESOLUTION_SHIFT 2 -#define ISL29018_CMD2_RESOLUTION_MASK (0x3 << ISL29018_CMD2_RESOLUTION_SHIFT) - -#define ISL29018_CMD2_RANGE_SHIFT 0 -#define ISL29018_CMD2_RANGE_MASK (0x3 << ISL29018_CMD2_RANGE_SHIFT) - -#define ISL29018_CMD2_SCHEME_SHIFT 7 -#define ISL29018_CMD2_SCHEME_MASK (0x1 << ISL29018_CMD2_SCHEME_SHIFT) - -#define ISL29018_REG_ADD_DATA_LSB 0x02 -#define ISL29018_REG_ADD_DATA_MSB 0x03 - -#define ISL29018_REG_TEST 0x08 -#define ISL29018_TEST_SHIFT 0 -#define ISL29018_TEST_MASK (0xFF << ISL29018_TEST_SHIFT) - -#define ISL29035_REG_DEVICE_ID 0x0F -#define ISL29035_DEVICE_ID_SHIFT 0x03 -#define ISL29035_DEVICE_ID_MASK (0x7 << ISL29035_DEVICE_ID_SHIFT) -#define ISL29035_DEVICE_ID 0x5 -#define ISL29035_BOUT_SHIFT 0x07 -#define ISL29035_BOUT_MASK (0x01 << ISL29035_BOUT_SHIFT) - -#define ISL29018_INT_TIME_AVAIL "0.090000 0.005630 0.000351 0.000021" -#define ISL29023_INT_TIME_AVAIL "0.090000 0.005600 0.000352 0.000022" -#define ISL29035_INT_TIME_AVAIL "0.105000 0.006500 0.000410 0.000025" - -static const char * const int_time_avail[] = { - ISL29018_INT_TIME_AVAIL, - ISL29023_INT_TIME_AVAIL, - ISL29035_INT_TIME_AVAIL, -}; - -enum isl29018_int_time { - ISL29018_INT_TIME_16, - ISL29018_INT_TIME_12, - ISL29018_INT_TIME_8, - ISL29018_INT_TIME_4, -}; - -static const unsigned int isl29018_int_utimes[3][4] = { - {90000, 5630, 351, 21}, - {90000, 5600, 352, 22}, - {105000, 6500, 410, 25}, -}; - -static const struct isl29018_scale { - unsigned int scale; - unsigned int uscale; -} isl29018_scales[4][4] = { - { {0, 15258}, {0, 61035}, {0, 244140}, {0, 976562} }, - { {0, 244140}, {0, 976562}, {3, 906250}, {15, 625000} }, - { {3, 906250}, {15, 625000}, {62, 500000}, {250, 0} }, - { {62, 500000}, {250, 0}, {1000, 0}, {4000, 0} } -}; - -struct isl29018_chip { - struct regmap *regmap; - struct mutex lock; - int type; - unsigned int calibscale; - unsigned int ucalibscale; - unsigned int int_time; - struct isl29018_scale scale; - int prox_scheme; - bool suspended; -}; - -static int isl29018_set_integration_time(struct isl29018_chip *chip, - unsigned int utime) -{ - int i, ret; - unsigned int int_time, new_int_time; - - for (i = 0; i < ARRAY_SIZE(isl29018_int_utimes[chip->type]); ++i) { - if (utime == isl29018_int_utimes[chip->type][i]) { - new_int_time = i; - break; - } - } - - if (i >= ARRAY_SIZE(isl29018_int_utimes[chip->type])) - return -EINVAL; - - ret = regmap_update_bits(chip->regmap, ISL29018_REG_ADD_COMMAND2, - ISL29018_CMD2_RESOLUTION_MASK, - i << ISL29018_CMD2_RESOLUTION_SHIFT); - if (ret < 0) - return ret; - - /* Keep the same range when integration time changes */ - int_time = chip->int_time; - for (i = 0; i < ARRAY_SIZE(isl29018_scales[int_time]); ++i) { - if (chip->scale.scale == isl29018_scales[int_time][i].scale && - chip->scale.uscale == isl29018_scales[int_time][i].uscale) { - chip->scale = isl29018_scales[new_int_time][i]; - break; - } - } - chip->int_time = new_int_time; - - return 0; -} - -static int isl29018_set_scale(struct isl29018_chip *chip, int scale, int uscale) -{ - int i, ret; - struct isl29018_scale new_scale; - - for (i = 0; i < ARRAY_SIZE(isl29018_scales[chip->int_time]); ++i) { - if (scale == isl29018_scales[chip->int_time][i].scale && - uscale == isl29018_scales[chip->int_time][i].uscale) { - new_scale = isl29018_scales[chip->int_time][i]; - break; - } - } - - if (i >= ARRAY_SIZE(isl29018_scales[chip->int_time])) - return -EINVAL; - - ret = regmap_update_bits(chip->regmap, ISL29018_REG_ADD_COMMAND2, - ISL29018_CMD2_RANGE_MASK, - i << ISL29018_CMD2_RANGE_SHIFT); - if (ret < 0) - return ret; - - chip->scale = new_scale; - - return 0; -} - -static int isl29018_read_sensor_input(struct isl29018_chip *chip, int mode) -{ - int status; - unsigned int lsb; - unsigned int msb; - struct device *dev = regmap_get_device(chip->regmap); - - /* Set mode */ - status = regmap_write(chip->regmap, ISL29018_REG_ADD_COMMAND1, - mode << ISL29018_CMD1_OPMODE_SHIFT); - if (status) { - dev_err(dev, - "Error in setting operating mode err %d\n", status); - return status; - } - msleep(ISL29018_CONV_TIME_MS); - status = regmap_read(chip->regmap, ISL29018_REG_ADD_DATA_LSB, &lsb); - if (status < 0) { - dev_err(dev, - "Error in reading LSB DATA with err %d\n", status); - return status; - } - - status = regmap_read(chip->regmap, ISL29018_REG_ADD_DATA_MSB, &msb); - if (status < 0) { - dev_err(dev, - "Error in reading MSB DATA with error %d\n", status); - return status; - } - dev_vdbg(dev, "MSB 0x%x and LSB 0x%x\n", msb, lsb); - - return (msb << 8) | lsb; -} - -static int isl29018_read_lux(struct isl29018_chip *chip, int *lux) -{ - int lux_data; - unsigned int data_x_range; - - lux_data = isl29018_read_sensor_input(chip, - ISL29018_CMD1_OPMODE_ALS_ONCE); - if (lux_data < 0) - return lux_data; - - data_x_range = lux_data * chip->scale.scale + - lux_data * chip->scale.uscale / 1000000; - *lux = data_x_range * chip->calibscale + - data_x_range * chip->ucalibscale / 1000000; - - return 0; -} - -static int isl29018_read_ir(struct isl29018_chip *chip, int *ir) -{ - int ir_data; - - ir_data = isl29018_read_sensor_input(chip, - ISL29018_CMD1_OPMODE_IR_ONCE); - if (ir_data < 0) - return ir_data; - - *ir = ir_data; - - return 0; -} - -static int isl29018_read_proximity_ir(struct isl29018_chip *chip, int scheme, - int *near_ir) -{ - int status; - int prox_data = -1; - int ir_data = -1; - struct device *dev = regmap_get_device(chip->regmap); - - /* Do proximity sensing with required scheme */ - status = regmap_update_bits(chip->regmap, ISL29018_REG_ADD_COMMAND2, - ISL29018_CMD2_SCHEME_MASK, - scheme << ISL29018_CMD2_SCHEME_SHIFT); - if (status) { - dev_err(dev, "Error in setting operating mode\n"); - return status; - } - - prox_data = isl29018_read_sensor_input(chip, - ISL29018_CMD1_OPMODE_PROX_ONCE); - if (prox_data < 0) - return prox_data; - - if (scheme == 1) { - *near_ir = prox_data; - return 0; - } - - ir_data = isl29018_read_sensor_input(chip, - ISL29018_CMD1_OPMODE_IR_ONCE); - if (ir_data < 0) - return ir_data; - - if (prox_data >= ir_data) - *near_ir = prox_data - ir_data; - else - *near_ir = 0; - - return 0; -} - -static ssize_t isl29018_show_scale_available(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - struct isl29018_chip *chip = iio_priv(indio_dev); - int i, len = 0; - - for (i = 0; i < ARRAY_SIZE(isl29018_scales[chip->int_time]); ++i) - len += sprintf(buf + len, "%d.%06d ", - isl29018_scales[chip->int_time][i].scale, - isl29018_scales[chip->int_time][i].uscale); - - buf[len - 1] = '\n'; - - return len; -} - -static ssize_t isl29018_show_int_time_available(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - struct isl29018_chip *chip = iio_priv(indio_dev); - int i, len = 0; - - for (i = 0; i < ARRAY_SIZE(isl29018_int_utimes[chip->type]); ++i) - len += sprintf(buf + len, "0.%06d ", - isl29018_int_utimes[chip->type][i]); - - buf[len - 1] = '\n'; - - return len; -} - -static ssize_t isl29018_show_prox_infrared_suppression(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - struct isl29018_chip *chip = iio_priv(indio_dev); - - /* - * Return the "proximity scheme" i.e. if the chip does on chip - * infrared suppression (1 means perform on chip suppression) - */ - return sprintf(buf, "%d\n", chip->prox_scheme); -} - -static ssize_t isl29018_store_prox_infrared_suppression(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct iio_dev *indio_dev = dev_to_iio_dev(dev); - struct isl29018_chip *chip = iio_priv(indio_dev); - int val; - - if (kstrtoint(buf, 10, &val)) - return -EINVAL; - if (!(val == 0 || val == 1)) - return -EINVAL; - - /* - * Get the "proximity scheme" i.e. if the chip does on chip - * infrared suppression (1 means perform on chip suppression) - */ - mutex_lock(&chip->lock); - chip->prox_scheme = val; - mutex_unlock(&chip->lock); - - return count; -} - -static int isl29018_write_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, - int val, - int val2, - long mask) -{ - struct isl29018_chip *chip = iio_priv(indio_dev); - int ret = -EINVAL; - - mutex_lock(&chip->lock); - switch (mask) { - case IIO_CHAN_INFO_CALIBSCALE: - if (chan->type == IIO_LIGHT) { - chip->calibscale = val; - chip->ucalibscale = val2; - ret = 0; - } - break; - case IIO_CHAN_INFO_INT_TIME: - if (chan->type == IIO_LIGHT) { - if (val) { - mutex_unlock(&chip->lock); - return -EINVAL; - } - ret = isl29018_set_integration_time(chip, val2); - } - break; - case IIO_CHAN_INFO_SCALE: - if (chan->type == IIO_LIGHT) - ret = isl29018_set_scale(chip, val, val2); - break; - default: - break; - } - mutex_unlock(&chip->lock); - - return ret; -} - -static int isl29018_read_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, - int *val, - int *val2, - long mask) -{ - int ret = -EINVAL; - struct isl29018_chip *chip = iio_priv(indio_dev); - - mutex_lock(&chip->lock); - if (chip->suspended) { - mutex_unlock(&chip->lock); - return -EBUSY; - } - switch (mask) { - case IIO_CHAN_INFO_RAW: - case IIO_CHAN_INFO_PROCESSED: - switch (chan->type) { - case IIO_LIGHT: - ret = isl29018_read_lux(chip, val); - break; - case IIO_INTENSITY: - ret = isl29018_read_ir(chip, val); - break; - case IIO_PROXIMITY: - ret = isl29018_read_proximity_ir(chip, - chip->prox_scheme, - val); - break; - default: - break; - } - if (!ret) - ret = IIO_VAL_INT; - break; - case IIO_CHAN_INFO_INT_TIME: - if (chan->type == IIO_LIGHT) { - *val = 0; - *val2 = isl29018_int_utimes[chip->type][chip->int_time]; - ret = IIO_VAL_INT_PLUS_MICRO; - } - break; - case IIO_CHAN_INFO_SCALE: - if (chan->type == IIO_LIGHT) { - *val = chip->scale.scale; - *val2 = chip->scale.uscale; - ret = IIO_VAL_INT_PLUS_MICRO; - } - break; - case IIO_CHAN_INFO_CALIBSCALE: - if (chan->type == IIO_LIGHT) { - *val = chip->calibscale; - *val2 = chip->ucalibscale; - ret = IIO_VAL_INT_PLUS_MICRO; - } - break; - default: - break; - } - mutex_unlock(&chip->lock); - return ret; -} - -#define ISL29018_LIGHT_CHANNEL { \ - .type = IIO_LIGHT, \ - .indexed = 1, \ - .channel = 0, \ - .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) | \ - BIT(IIO_CHAN_INFO_CALIBSCALE) | \ - BIT(IIO_CHAN_INFO_SCALE) | \ - BIT(IIO_CHAN_INFO_INT_TIME), \ -} - -#define ISL29018_IR_CHANNEL { \ - .type = IIO_INTENSITY, \ - .modified = 1, \ - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ - .channel2 = IIO_MOD_LIGHT_IR, \ -} - -#define ISL29018_PROXIMITY_CHANNEL { \ - .type = IIO_PROXIMITY, \ - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ -} - -static const struct iio_chan_spec isl29018_channels[] = { - ISL29018_LIGHT_CHANNEL, - ISL29018_IR_CHANNEL, - ISL29018_PROXIMITY_CHANNEL, -}; - -static const struct iio_chan_spec isl29023_channels[] = { - ISL29018_LIGHT_CHANNEL, - ISL29018_IR_CHANNEL, -}; - -static IIO_DEVICE_ATTR(in_illuminance_integration_time_available, S_IRUGO, - isl29018_show_int_time_available, NULL, 0); -static IIO_DEVICE_ATTR(in_illuminance_scale_available, S_IRUGO, - isl29018_show_scale_available, NULL, 0); -static IIO_DEVICE_ATTR(proximity_on_chip_ambient_infrared_suppression, - S_IRUGO | S_IWUSR, - isl29018_show_prox_infrared_suppression, - isl29018_store_prox_infrared_suppression, 0); - -#define ISL29018_DEV_ATTR(name) (&iio_dev_attr_##name.dev_attr.attr) - -static struct attribute *isl29018_attributes[] = { - ISL29018_DEV_ATTR(in_illuminance_scale_available), - ISL29018_DEV_ATTR(in_illuminance_integration_time_available), - ISL29018_DEV_ATTR(proximity_on_chip_ambient_infrared_suppression), - NULL -}; - -static struct attribute *isl29023_attributes[] = { - ISL29018_DEV_ATTR(in_illuminance_scale_available), - ISL29018_DEV_ATTR(in_illuminance_integration_time_available), - NULL -}; - -static const struct attribute_group isl29018_group = { - .attrs = isl29018_attributes, -}; - -static const struct attribute_group isl29023_group = { - .attrs = isl29023_attributes, -}; - -static int isl29035_detect(struct isl29018_chip *chip) -{ - int status; - unsigned int id; - struct device *dev = regmap_get_device(chip->regmap); - - status = regmap_read(chip->regmap, ISL29035_REG_DEVICE_ID, &id); - if (status < 0) { - dev_err(dev, - "Error reading ID register with error %d\n", - status); - return status; - } - - id = (id & ISL29035_DEVICE_ID_MASK) >> ISL29035_DEVICE_ID_SHIFT; - - if (id != ISL29035_DEVICE_ID) - return -ENODEV; - - /* Clear brownout bit */ - return regmap_update_bits(chip->regmap, ISL29035_REG_DEVICE_ID, - ISL29035_BOUT_MASK, 0); -} - -enum { - isl29018, - isl29023, - isl29035, -}; - -static int isl29018_chip_init(struct isl29018_chip *chip) -{ - int status; - struct device *dev = regmap_get_device(chip->regmap); - - if (chip->type == isl29035) { - status = isl29035_detect(chip); - if (status < 0) - return status; - } - - /* Code added per Intersil Application Note 1534: - * When VDD sinks to approximately 1.8V or below, some of - * the part's registers may change their state. When VDD - * recovers to 2.25V (or greater), the part may thus be in an - * unknown mode of operation. The user can return the part to - * a known mode of operation either by (a) setting VDD = 0V for - * 1 second or more and then powering back up with a slew rate - * of 0.5V/ms or greater, or (b) via I2C disable all ALS/PROX - * conversions, clear the test registers, and then rewrite all - * registers to the desired values. - * ... - * For ISL29011, ISL29018, ISL29021, ISL29023 - * 1. Write 0x00 to register 0x08 (TEST) - * 2. Write 0x00 to register 0x00 (CMD1) - * 3. Rewrite all registers to the desired values - * - * ISL29018 Data Sheet (FN6619.1, Feb 11, 2010) essentially says - * the same thing EXCEPT the data sheet asks for a 1ms delay after - * writing the CMD1 register. - */ - status = regmap_write(chip->regmap, ISL29018_REG_TEST, 0x0); - if (status < 0) { - dev_err(dev, "Failed to clear isl29018 TEST reg.(%d)\n", - status); - return status; - } - - /* See Intersil AN1534 comments above. - * "Operating Mode" (COMMAND1) register is reprogrammed when - * data is read from the device. - */ - status = regmap_write(chip->regmap, ISL29018_REG_ADD_COMMAND1, 0); - if (status < 0) { - dev_err(dev, "Failed to clear isl29018 CMD1 reg.(%d)\n", - status); - return status; - } - - usleep_range(1000, 2000); /* per data sheet, page 10 */ - - /* Set defaults */ - status = isl29018_set_scale(chip, chip->scale.scale, - chip->scale.uscale); - if (status < 0) { - dev_err(dev, "Init of isl29018 fails\n"); - return status; - } - - status = isl29018_set_integration_time(chip, - isl29018_int_utimes[chip->type][chip->int_time]); - if (status < 0) { - dev_err(dev, "Init of isl29018 fails\n"); - return status; - } - - return 0; -} - -static const struct iio_info isl29018_info = { - .attrs = &isl29018_group, - .driver_module = THIS_MODULE, - .read_raw = isl29018_read_raw, - .write_raw = isl29018_write_raw, -}; - -static const struct iio_info isl29023_info = { - .attrs = &isl29023_group, - .driver_module = THIS_MODULE, - .read_raw = isl29018_read_raw, - .write_raw = isl29018_write_raw, -}; - -static bool isl29018_is_volatile_reg(struct device *dev, unsigned int reg) -{ - switch (reg) { - case ISL29018_REG_ADD_DATA_LSB: - case ISL29018_REG_ADD_DATA_MSB: - case ISL29018_REG_ADD_COMMAND1: - case ISL29018_REG_TEST: - case ISL29035_REG_DEVICE_ID: - return true; - default: - return false; - } -} - -static const struct regmap_config isl29018_regmap_config = { - .reg_bits = 8, - .val_bits = 8, - .volatile_reg = isl29018_is_volatile_reg, - .max_register = ISL29018_REG_TEST, - .num_reg_defaults_raw = ISL29018_REG_TEST + 1, - .cache_type = REGCACHE_RBTREE, -}; - -static const struct regmap_config isl29035_regmap_config = { - .reg_bits = 8, - .val_bits = 8, - .volatile_reg = isl29018_is_volatile_reg, - .max_register = ISL29035_REG_DEVICE_ID, - .num_reg_defaults_raw = ISL29035_REG_DEVICE_ID + 1, - .cache_type = REGCACHE_RBTREE, -}; - -struct isl29018_chip_info { - const struct iio_chan_spec *channels; - int num_channels; - const struct iio_info *indio_info; - const struct regmap_config *regmap_cfg; -}; - -static const struct isl29018_chip_info isl29018_chip_info_tbl[] = { - [isl29018] = { - .channels = isl29018_channels, - .num_channels = ARRAY_SIZE(isl29018_channels), - .indio_info = &isl29018_info, - .regmap_cfg = &isl29018_regmap_config, - }, - [isl29023] = { - .channels = isl29023_channels, - .num_channels = ARRAY_SIZE(isl29023_channels), - .indio_info = &isl29023_info, - .regmap_cfg = &isl29018_regmap_config, - }, - [isl29035] = { - .channels = isl29023_channels, - .num_channels = ARRAY_SIZE(isl29023_channels), - .indio_info = &isl29023_info, - .regmap_cfg = &isl29035_regmap_config, - }, -}; - -static const char *isl29018_match_acpi_device(struct device *dev, int *data) -{ - const struct acpi_device_id *id; - - id = acpi_match_device(dev->driver->acpi_match_table, dev); - - if (!id) - return NULL; - - *data = (int)id->driver_data; - - return dev_name(dev); -} - -static int isl29018_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct isl29018_chip *chip; - struct iio_dev *indio_dev; - int err; - const char *name = NULL; - int dev_id = 0; - - indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip)); - if (!indio_dev) - return -ENOMEM; - chip = iio_priv(indio_dev); - - i2c_set_clientdata(client, indio_dev); - - if (id) { - name = id->name; - dev_id = id->driver_data; - } - - if (ACPI_HANDLE(&client->dev)) - name = isl29018_match_acpi_device(&client->dev, &dev_id); - - mutex_init(&chip->lock); - - chip->type = dev_id; - chip->calibscale = 1; - chip->ucalibscale = 0; - chip->int_time = ISL29018_INT_TIME_16; - chip->scale = isl29018_scales[chip->int_time][0]; - chip->suspended = false; - - chip->regmap = devm_regmap_init_i2c(client, - isl29018_chip_info_tbl[dev_id].regmap_cfg); - if (IS_ERR(chip->regmap)) { - err = PTR_ERR(chip->regmap); - dev_err(&client->dev, "regmap initialization fails: %d\n", err); - return err; - } - - err = isl29018_chip_init(chip); - if (err) - return err; - - indio_dev->info = isl29018_chip_info_tbl[dev_id].indio_info; - indio_dev->channels = isl29018_chip_info_tbl[dev_id].channels; - indio_dev->num_channels = isl29018_chip_info_tbl[dev_id].num_channels; - indio_dev->name = name; - indio_dev->dev.parent = &client->dev; - indio_dev->modes = INDIO_DIRECT_MODE; - return devm_iio_device_register(&client->dev, indio_dev); -} - -#ifdef CONFIG_PM_SLEEP -static int isl29018_suspend(struct device *dev) -{ - struct isl29018_chip *chip = iio_priv(dev_get_drvdata(dev)); - - mutex_lock(&chip->lock); - - /* Since this driver uses only polling commands, we are by default in - * auto shutdown (ie, power-down) mode. - * So we do not have much to do here. - */ - chip->suspended = true; - - mutex_unlock(&chip->lock); - return 0; -} - -static int isl29018_resume(struct device *dev) -{ - struct isl29018_chip *chip = iio_priv(dev_get_drvdata(dev)); - int err; - - mutex_lock(&chip->lock); - - err = isl29018_chip_init(chip); - if (!err) - chip->suspended = false; - - mutex_unlock(&chip->lock); - return err; -} - -static SIMPLE_DEV_PM_OPS(isl29018_pm_ops, isl29018_suspend, isl29018_resume); -#define ISL29018_PM_OPS (&isl29018_pm_ops) -#else -#define ISL29018_PM_OPS NULL -#endif - -static const struct acpi_device_id isl29018_acpi_match[] = { - {"ISL29018", isl29018}, - {"ISL29023", isl29023}, - {"ISL29035", isl29035}, - {}, -}; -MODULE_DEVICE_TABLE(acpi, isl29018_acpi_match); - -static const struct i2c_device_id isl29018_id[] = { - {"isl29018", isl29018}, - {"isl29023", isl29023}, - {"isl29035", isl29035}, - {} -}; - -MODULE_DEVICE_TABLE(i2c, isl29018_id); - -static const struct of_device_id isl29018_of_match[] = { - { .compatible = "isil,isl29018", }, - { .compatible = "isil,isl29023", }, - { .compatible = "isil,isl29035", }, - { }, -}; -MODULE_DEVICE_TABLE(of, isl29018_of_match); - -static struct i2c_driver isl29018_driver = { - .driver = { - .name = "isl29018", - .acpi_match_table = ACPI_PTR(isl29018_acpi_match), - .pm = ISL29018_PM_OPS, - .of_match_table = isl29018_of_match, - }, - .probe = isl29018_probe, - .id_table = isl29018_id, -}; -module_i2c_driver(isl29018_driver); - -MODULE_DESCRIPTION("ISL29018 Ambient Light Sensor driver"); -MODULE_LICENSE("GPL"); |