Move ISL29028 ALS / Proximity Sensor out of staging and into mainline. Signed-off-by: Brian Masney <masneyb@xxxxxxxxxxxxx> --- drivers/iio/light/Kconfig | 10 + drivers/iio/light/Makefile | 1 + drivers/iio/light/isl29028.c | 723 +++++++++++++++++++++++++++++++++++ drivers/staging/iio/light/Kconfig | 10 - drivers/staging/iio/light/Makefile | 1 - drivers/staging/iio/light/isl29028.c | 723 ----------------------------------- 6 files changed, 734 insertions(+), 734 deletions(-) create mode 100644 drivers/iio/light/isl29028.c delete mode 100644 drivers/staging/iio/light/isl29028.c diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig index 33e755d..2356ed9 100644 --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -172,6 +172,16 @@ config SENSORS_ISL29018 in lux, proximity infrared sensing and normal infrared sensing. Data from sensor is accessible via sysfs. +config SENSORS_ISL29028 + tristate "Intersil ISL29028 Concurrent Light and Proximity Sensor" + depends on I2C + select REGMAP_I2C + help + Provides driver for the Intersil's ISL29028 device. + This driver supports the sysfs interface to get the ALS, IR intensity, + Proximity value via iio. The ISL29028 provides the concurrent sensing + of ambient light and proximity. + config ISL29125 tristate "Intersil ISL29125 digital color light sensor" depends on I2C diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile index 681363c..fa32fa4 100644 --- a/drivers/iio/light/Makefile +++ b/drivers/iio/light/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_GP2AP020A00F) += gp2ap020a00f.o obj-$(CONFIG_HID_SENSOR_ALS) += hid-sensor-als.o obj-$(CONFIG_HID_SENSOR_PROX) += hid-sensor-prox.o obj-$(CONFIG_SENSORS_ISL29018) += isl29018.o +obj-$(CONFIG_SENSORS_ISL29028) += isl29028.o obj-$(CONFIG_ISL29125) += isl29125.o obj-$(CONFIG_JSA1212) += jsa1212.o obj-$(CONFIG_SENSORS_LM3533) += lm3533-als.o diff --git a/drivers/iio/light/isl29028.c b/drivers/iio/light/isl29028.c new file mode 100644 index 0000000..aeb5082 --- /dev/null +++ b/drivers/iio/light/isl29028.c @@ -0,0 +1,723 @@ +/* + * IIO driver for the light sensor ISL29028. + * ISL29028 is Concurrent Ambient Light and Proximity Sensor + * + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. + * Copyright (c) 2016-2017 Brian Masney <masneyb@xxxxxxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/err.h> +#include <linux/mutex.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/regmap.h> +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> +#include <linux/pm_runtime.h> + +#define ISL29028_CONV_TIME_MS 100 + +#define ISL29028_REG_CONFIGURE 0x01 + +#define ISL29028_CONF_ALS_IR_MODE_ALS 0 +#define ISL29028_CONF_ALS_IR_MODE_IR BIT(0) +#define ISL29028_CONF_ALS_IR_MODE_MASK BIT(0) + +#define ISL29028_CONF_ALS_RANGE_LOW_LUX 0 +#define ISL29028_CONF_ALS_RANGE_HIGH_LUX BIT(1) +#define ISL29028_CONF_ALS_RANGE_MASK BIT(1) + +#define ISL29028_CONF_ALS_DIS 0 +#define ISL29028_CONF_ALS_EN BIT(2) +#define ISL29028_CONF_ALS_EN_MASK BIT(2) + +#define ISL29028_CONF_PROX_SLP_SH 4 +#define ISL29028_CONF_PROX_SLP_MASK (7 << ISL29028_CONF_PROX_SLP_SH) + +#define ISL29028_CONF_PROX_EN BIT(7) +#define ISL29028_CONF_PROX_EN_MASK BIT(7) + +#define ISL29028_REG_INTERRUPT 0x02 + +#define ISL29028_REG_PROX_DATA 0x08 +#define ISL29028_REG_ALSIR_L 0x09 +#define ISL29028_REG_ALSIR_U 0x0A + +#define ISL29028_REG_TEST1_MODE 0x0E +#define ISL29028_REG_TEST2_MODE 0x0F + +#define ISL29028_NUM_REGS (ISL29028_REG_TEST2_MODE + 1) + +#define ISL29028_POWER_OFF_DELAY_MS 2000 + +struct isl29028_prox_data { + int sampling_int; + int sampling_fract; + int sleep_time; +}; + +static const struct isl29028_prox_data isl29028_prox_data[] = { + { 1, 250000, 800 }, + { 2, 500000, 400 }, + { 5, 0, 200 }, + { 10, 0, 100 }, + { 13, 300000, 75 }, + { 20, 0, 50 }, + { 80, 0, 13 }, /* + * Note: Data sheet lists 12.5 ms sleep time. + * Round up a half millisecond for msleep(). + */ + { 100, 0, 0 } +}; + +enum isl29028_als_ir_mode { + ISL29028_MODE_NONE = 0, + ISL29028_MODE_ALS, + ISL29028_MODE_IR, +}; + +struct isl29028_chip { + struct mutex lock; + struct regmap *regmap; + int prox_sampling_int; + int prox_sampling_frac; + bool enable_prox; + int lux_scale; + enum isl29028_als_ir_mode als_ir_mode; +}; + +static int isl29028_find_prox_sleep_index(int sampling_int, int sampling_fract) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(isl29028_prox_data); ++i) { + if (isl29028_prox_data[i].sampling_int == sampling_int && + isl29028_prox_data[i].sampling_fract == sampling_fract) + return i; + } + + return -EINVAL; +} + +static int isl29028_set_proxim_sampling(struct isl29028_chip *chip, + int sampling_int, int sampling_fract) +{ + struct device *dev = regmap_get_device(chip->regmap); + int sleep_index, ret; + + sleep_index = isl29028_find_prox_sleep_index(sampling_int, + sampling_fract); + if (sleep_index < 0) + return sleep_index; + + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, + ISL29028_CONF_PROX_SLP_MASK, + sleep_index << ISL29028_CONF_PROX_SLP_SH); + + if (ret < 0) { + dev_err(dev, "%s(): Error %d setting the proximity sampling\n", + __func__, ret); + return ret; + } + + chip->prox_sampling_int = sampling_int; + chip->prox_sampling_frac = sampling_fract; + + return ret; +} + +static int isl29028_enable_proximity(struct isl29028_chip *chip) +{ + int prox_index, ret; + + ret = isl29028_set_proxim_sampling(chip, chip->prox_sampling_int, + chip->prox_sampling_frac); + if (ret < 0) + return ret; + + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, + ISL29028_CONF_PROX_EN_MASK, + ISL29028_CONF_PROX_EN); + if (ret < 0) + return ret; + + /* Wait for conversion to be complete for first sample */ + prox_index = isl29028_find_prox_sleep_index(chip->prox_sampling_int, + chip->prox_sampling_frac); + if (prox_index < 0) + return prox_index; + + msleep(isl29028_prox_data[prox_index].sleep_time); + + return 0; +} + +static int isl29028_set_als_scale(struct isl29028_chip *chip, int lux_scale) +{ + struct device *dev = regmap_get_device(chip->regmap); + int val = (lux_scale == 2000) ? ISL29028_CONF_ALS_RANGE_HIGH_LUX : + ISL29028_CONF_ALS_RANGE_LOW_LUX; + int ret; + + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, + ISL29028_CONF_ALS_RANGE_MASK, val); + if (ret < 0) { + dev_err(dev, "%s(): Error %d setting the ALS scale\n", __func__, + ret); + return ret; + } + + chip->lux_scale = lux_scale; + + return ret; +} + +static int isl29028_set_als_ir_mode(struct isl29028_chip *chip, + enum isl29028_als_ir_mode mode) +{ + int ret; + + if (chip->als_ir_mode == mode) + return 0; + + ret = isl29028_set_als_scale(chip, chip->lux_scale); + if (ret < 0) + return ret; + + switch (mode) { + case ISL29028_MODE_ALS: + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, + ISL29028_CONF_ALS_IR_MODE_MASK, + ISL29028_CONF_ALS_IR_MODE_ALS); + if (ret < 0) + return ret; + + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, + ISL29028_CONF_ALS_RANGE_MASK, + ISL29028_CONF_ALS_RANGE_HIGH_LUX); + break; + case ISL29028_MODE_IR: + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, + ISL29028_CONF_ALS_IR_MODE_MASK, + ISL29028_CONF_ALS_IR_MODE_IR); + break; + case ISL29028_MODE_NONE: + return regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, + ISL29028_CONF_ALS_EN_MASK, + ISL29028_CONF_ALS_DIS); + } + + if (ret < 0) + return ret; + + /* Enable the ALS/IR */ + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, + ISL29028_CONF_ALS_EN_MASK, + ISL29028_CONF_ALS_EN); + if (ret < 0) + return ret; + + /* Need to wait for conversion time if ALS/IR mode enabled */ + msleep(ISL29028_CONV_TIME_MS); + + chip->als_ir_mode = mode; + + return 0; +} + +static int isl29028_read_als_ir(struct isl29028_chip *chip, int *als_ir) +{ + struct device *dev = regmap_get_device(chip->regmap); + unsigned int lsb; + unsigned int msb; + int ret; + + ret = regmap_read(chip->regmap, ISL29028_REG_ALSIR_L, &lsb); + if (ret < 0) { + dev_err(dev, + "%s(): Error %d reading register ALSIR_L\n", + __func__, ret); + return ret; + } + + ret = regmap_read(chip->regmap, ISL29028_REG_ALSIR_U, &msb); + if (ret < 0) { + dev_err(dev, + "%s(): Error %d reading register ALSIR_U\n", + __func__, ret); + return ret; + } + + *als_ir = ((msb & 0xF) << 8) | (lsb & 0xFF); + + return 0; +} + +static int isl29028_read_proxim(struct isl29028_chip *chip, int *prox) +{ + struct device *dev = regmap_get_device(chip->regmap); + unsigned int data; + int ret; + + if (!chip->enable_prox) { + ret = isl29028_enable_proximity(chip); + if (ret < 0) + return ret; + + chip->enable_prox = true; + } + + ret = regmap_read(chip->regmap, ISL29028_REG_PROX_DATA, &data); + if (ret < 0) { + dev_err(dev, "%s(): Error %d reading register PROX_DATA\n", + __func__, ret); + return ret; + } + + *prox = data; + + return 0; +} + +static int isl29028_als_get(struct isl29028_chip *chip, int *als_data) +{ + struct device *dev = regmap_get_device(chip->regmap); + int ret; + int als_ir_data; + + ret = isl29028_set_als_ir_mode(chip, ISL29028_MODE_ALS); + if (ret < 0) { + dev_err(dev, "%s(): Error %d enabling ALS mode\n", __func__, + ret); + return ret; + } + + ret = isl29028_read_als_ir(chip, &als_ir_data); + if (ret < 0) + return ret; + + /* + * convert als data count to lux. + * if lux_scale = 125, lux = count * 0.031 + * if lux_scale = 2000, lux = count * 0.49 + */ + if (chip->lux_scale == 125) + als_ir_data = (als_ir_data * 31) / 1000; + else + als_ir_data = (als_ir_data * 49) / 100; + + *als_data = als_ir_data; + + return 0; +} + +static int isl29028_ir_get(struct isl29028_chip *chip, int *ir_data) +{ + struct device *dev = regmap_get_device(chip->regmap); + int ret; + + ret = isl29028_set_als_ir_mode(chip, ISL29028_MODE_IR); + if (ret < 0) { + dev_err(dev, "%s(): Error %d enabling IR mode\n", __func__, + ret); + return ret; + } + + return isl29028_read_als_ir(chip, ir_data); +} + +static int isl29028_set_pm_runtime_busy(struct isl29028_chip *chip, bool on) +{ + struct device *dev = regmap_get_device(chip->regmap); + int ret; + + if (on) { + ret = pm_runtime_get_sync(dev); + if (ret < 0) + pm_runtime_put_noidle(dev); + } else { + pm_runtime_mark_last_busy(dev); + ret = pm_runtime_put_autosuspend(dev); + } + + return ret; +} + +/* Channel IO */ +static int isl29028_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct isl29028_chip *chip = iio_priv(indio_dev); + struct device *dev = regmap_get_device(chip->regmap); + int ret; + + ret = isl29028_set_pm_runtime_busy(chip, true); + if (ret < 0) + return ret; + + mutex_lock(&chip->lock); + + ret = -EINVAL; + switch (chan->type) { + case IIO_PROXIMITY: + if (mask != IIO_CHAN_INFO_SAMP_FREQ) { + dev_err(dev, + "%s(): proximity: Mask value 0x%08lx is not supported\n", + __func__, mask); + break; + } + + if (val < 1 || val > 100) { + dev_err(dev, + "%s(): proximity: Sampling frequency %d is not in the range [1:100]\n", + __func__, val); + break; + } + + ret = isl29028_set_proxim_sampling(chip, val, val2); + break; + case IIO_LIGHT: + if (mask != IIO_CHAN_INFO_SCALE) { + dev_err(dev, + "%s(): light: Mask value 0x%08lx is not supported\n", + __func__, mask); + break; + } + + if (val != 125 && val != 2000) { + dev_err(dev, + "%s(): light: Lux scale %d is not in the set {125, 2000}\n", + __func__, val); + break; + } + + ret = isl29028_set_als_scale(chip, val); + break; + default: + dev_err(dev, "%s(): Unsupported channel type %x\n", + __func__, chan->type); + break; + } + + mutex_unlock(&chip->lock); + + if (ret < 0) + return ret; + + ret = isl29028_set_pm_runtime_busy(chip, false); + if (ret < 0) + return ret; + + return ret; +} + +static int isl29028_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct isl29028_chip *chip = iio_priv(indio_dev); + struct device *dev = regmap_get_device(chip->regmap); + int ret, pm_ret; + + ret = isl29028_set_pm_runtime_busy(chip, true); + if (ret < 0) + return ret; + + mutex_lock(&chip->lock); + + ret = -EINVAL; + switch (mask) { + case IIO_CHAN_INFO_RAW: + case IIO_CHAN_INFO_PROCESSED: + switch (chan->type) { + case IIO_LIGHT: + ret = isl29028_als_get(chip, val); + break; + case IIO_INTENSITY: + ret = isl29028_ir_get(chip, val); + break; + case IIO_PROXIMITY: + ret = isl29028_read_proxim(chip, val); + break; + default: + break; + } + + if (ret < 0) + break; + + ret = IIO_VAL_INT; + break; + case IIO_CHAN_INFO_SAMP_FREQ: + if (chan->type != IIO_PROXIMITY) + break; + + *val = chip->prox_sampling_int; + *val2 = chip->prox_sampling_frac; + ret = IIO_VAL_INT; + break; + case IIO_CHAN_INFO_SCALE: + if (chan->type != IIO_LIGHT) + break; + *val = chip->lux_scale; + ret = IIO_VAL_INT; + break; + default: + dev_err(dev, "%s(): mask value 0x%08lx is not supported\n", + __func__, mask); + break; + } + + mutex_unlock(&chip->lock); + + if (ret < 0) + return ret; + + /** + * Preserve the ret variable if the call to + * isl29028_set_pm_runtime_busy() is successful so the reading + * (if applicable) is returned to user space. + */ + pm_ret = isl29028_set_pm_runtime_busy(chip, false); + if (pm_ret < 0) + return pm_ret; + + return ret; +} + +static IIO_CONST_ATTR(in_proximity_sampling_frequency_available, + "1.25 2.5 5 10 13.3 20 80 100"); +static IIO_CONST_ATTR(in_illuminance_scale_available, "125 2000"); + +#define ISL29028_CONST_ATTR(name) (&iio_const_attr_##name.dev_attr.attr) +static struct attribute *isl29028_attributes[] = { + ISL29028_CONST_ATTR(in_proximity_sampling_frequency_available), + ISL29028_CONST_ATTR(in_illuminance_scale_available), + NULL, +}; + +static const struct attribute_group isl29108_group = { + .attrs = isl29028_attributes, +}; + +static const struct iio_chan_spec isl29028_channels[] = { + { + .type = IIO_LIGHT, + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) | + BIT(IIO_CHAN_INFO_SCALE), + }, { + .type = IIO_INTENSITY, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + }, { + .type = IIO_PROXIMITY, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SAMP_FREQ), + } +}; + +static const struct iio_info isl29028_info = { + .attrs = &isl29108_group, + .driver_module = THIS_MODULE, + .read_raw = isl29028_read_raw, + .write_raw = isl29028_write_raw, +}; + +static int isl29028_clear_configure_reg(struct isl29028_chip *chip) +{ + struct device *dev = regmap_get_device(chip->regmap); + int ret; + + ret = regmap_write(chip->regmap, ISL29028_REG_CONFIGURE, 0x0); + if (ret < 0) + dev_err(dev, "%s(): Error %d clearing the CONFIGURE register\n", + __func__, ret); + + chip->als_ir_mode = ISL29028_MODE_NONE; + chip->enable_prox = false; + + return ret; +} + +static bool isl29028_is_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case ISL29028_REG_INTERRUPT: + case ISL29028_REG_PROX_DATA: + case ISL29028_REG_ALSIR_L: + case ISL29028_REG_ALSIR_U: + return true; + default: + return false; + } +} + +static const struct regmap_config isl29028_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .volatile_reg = isl29028_is_volatile_reg, + .max_register = ISL29028_NUM_REGS - 1, + .num_reg_defaults_raw = ISL29028_NUM_REGS, + .cache_type = REGCACHE_RBTREE, +}; + +static int isl29028_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct isl29028_chip *chip; + struct iio_dev *indio_dev; + int ret; + + 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); + mutex_init(&chip->lock); + + chip->regmap = devm_regmap_init_i2c(client, &isl29028_regmap_config); + if (IS_ERR(chip->regmap)) { + ret = PTR_ERR(chip->regmap); + dev_err(&client->dev, "%s: Error %d initializing regmap\n", + __func__, ret); + return ret; + } + + chip->enable_prox = false; + chip->prox_sampling_int = 20; + chip->prox_sampling_frac = 0; + chip->lux_scale = 2000; + + ret = regmap_write(chip->regmap, ISL29028_REG_TEST1_MODE, 0x0); + if (ret < 0) { + dev_err(&client->dev, + "%s(): Error %d writing to TEST1_MODE register\n", + __func__, ret); + return ret; + } + + ret = regmap_write(chip->regmap, ISL29028_REG_TEST2_MODE, 0x0); + if (ret < 0) { + dev_err(&client->dev, + "%s(): Error %d writing to TEST2_MODE register\n", + __func__, ret); + return ret; + } + + ret = isl29028_clear_configure_reg(chip); + if (ret < 0) + return ret; + + indio_dev->info = &isl29028_info; + indio_dev->channels = isl29028_channels; + indio_dev->num_channels = ARRAY_SIZE(isl29028_channels); + indio_dev->name = id->name; + indio_dev->dev.parent = &client->dev; + indio_dev->modes = INDIO_DIRECT_MODE; + + pm_runtime_enable(&client->dev); + pm_runtime_set_autosuspend_delay(&client->dev, + ISL29028_POWER_OFF_DELAY_MS); + pm_runtime_use_autosuspend(&client->dev); + + ret = devm_iio_device_register(indio_dev->dev.parent, indio_dev); + if (ret < 0) { + dev_err(&client->dev, + "%s(): iio registration failed with error %d\n", + __func__, ret); + return ret; + } + + return 0; +} + +static int isl29028_remove(struct i2c_client *client) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(client); + struct isl29028_chip *chip = iio_priv(indio_dev); + + iio_device_unregister(indio_dev); + + pm_runtime_disable(&client->dev); + pm_runtime_set_suspended(&client->dev); + pm_runtime_put_noidle(&client->dev); + + return isl29028_clear_configure_reg(chip); +} + +static int __maybe_unused isl29028_suspend(struct device *dev) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct isl29028_chip *chip = iio_priv(indio_dev); + int ret; + + mutex_lock(&chip->lock); + + ret = isl29028_clear_configure_reg(chip); + + mutex_unlock(&chip->lock); + + return ret; +} + +static int __maybe_unused isl29028_resume(struct device *dev) +{ + /** + * The specific component (ALS/IR or proximity) will enable itself as + * needed the next time that the user requests a reading. This is done + * above in isl29028_set_als_ir_mode() and isl29028_enable_proximity(). + */ + return 0; +} + +static const struct dev_pm_ops isl29028_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) + SET_RUNTIME_PM_OPS(isl29028_suspend, isl29028_resume, NULL) +}; + +static const struct i2c_device_id isl29028_id[] = { + {"isl29028", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, isl29028_id); + +static const struct of_device_id isl29028_of_match[] = { + { .compatible = "isl,isl29028", }, /* for backward compat., don't use */ + { .compatible = "isil,isl29028", }, + { }, +}; +MODULE_DEVICE_TABLE(of, isl29028_of_match); + +static struct i2c_driver isl29028_driver = { + .driver = { + .name = "isl29028", + .pm = &isl29028_pm_ops, + .of_match_table = isl29028_of_match, + }, + .probe = isl29028_probe, + .remove = isl29028_remove, + .id_table = isl29028_id, +}; + +module_i2c_driver(isl29028_driver); + +MODULE_DESCRIPTION("ISL29028 Ambient Light and Proximity Sensor driver"); +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Laxman Dewangan <ldewangan@xxxxxxxxxx>"); diff --git a/drivers/staging/iio/light/Kconfig b/drivers/staging/iio/light/Kconfig index 4fbf629..aacb0ae 100644 --- a/drivers/staging/iio/light/Kconfig +++ b/drivers/staging/iio/light/Kconfig @@ -3,16 +3,6 @@ # menu "Light sensors" -config SENSORS_ISL29028 - tristate "Intersil ISL29028 Concurrent Light and Proximity Sensor" - depends on I2C - select REGMAP_I2C - help - Provides driver for the Intersil's ISL29028 device. - This driver supports the sysfs interface to get the ALS, IR intensity, - Proximity value via iio. The ISL29028 provides the concurrent sensing - of ambient light and proximity. - config TSL2x7x tristate "TAOS TSL/TMD2x71 and TSL/TMD2x72 Family of light and proximity sensors" depends on I2C diff --git a/drivers/staging/iio/light/Makefile b/drivers/staging/iio/light/Makefile index f8693e9..10286c3 100644 --- a/drivers/staging/iio/light/Makefile +++ b/drivers/staging/iio/light/Makefile @@ -2,5 +2,4 @@ # Makefile for industrial I/O Light sensors # -obj-$(CONFIG_SENSORS_ISL29028) += isl29028.o obj-$(CONFIG_TSL2x7x) += tsl2x7x_core.o diff --git a/drivers/staging/iio/light/isl29028.c b/drivers/staging/iio/light/isl29028.c deleted file mode 100644 index aeb5082..0000000 --- a/drivers/staging/iio/light/isl29028.c +++ /dev/null @@ -1,723 +0,0 @@ -/* - * IIO driver for the light sensor ISL29028. - * ISL29028 is Concurrent Ambient Light and Proximity Sensor - * - * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. - * Copyright (c) 2016-2017 Brian Masney <masneyb@xxxxxxxxxxxxx> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope 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. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <linux/module.h> -#include <linux/i2c.h> -#include <linux/err.h> -#include <linux/mutex.h> -#include <linux/delay.h> -#include <linux/slab.h> -#include <linux/regmap.h> -#include <linux/iio/iio.h> -#include <linux/iio/sysfs.h> -#include <linux/pm_runtime.h> - -#define ISL29028_CONV_TIME_MS 100 - -#define ISL29028_REG_CONFIGURE 0x01 - -#define ISL29028_CONF_ALS_IR_MODE_ALS 0 -#define ISL29028_CONF_ALS_IR_MODE_IR BIT(0) -#define ISL29028_CONF_ALS_IR_MODE_MASK BIT(0) - -#define ISL29028_CONF_ALS_RANGE_LOW_LUX 0 -#define ISL29028_CONF_ALS_RANGE_HIGH_LUX BIT(1) -#define ISL29028_CONF_ALS_RANGE_MASK BIT(1) - -#define ISL29028_CONF_ALS_DIS 0 -#define ISL29028_CONF_ALS_EN BIT(2) -#define ISL29028_CONF_ALS_EN_MASK BIT(2) - -#define ISL29028_CONF_PROX_SLP_SH 4 -#define ISL29028_CONF_PROX_SLP_MASK (7 << ISL29028_CONF_PROX_SLP_SH) - -#define ISL29028_CONF_PROX_EN BIT(7) -#define ISL29028_CONF_PROX_EN_MASK BIT(7) - -#define ISL29028_REG_INTERRUPT 0x02 - -#define ISL29028_REG_PROX_DATA 0x08 -#define ISL29028_REG_ALSIR_L 0x09 -#define ISL29028_REG_ALSIR_U 0x0A - -#define ISL29028_REG_TEST1_MODE 0x0E -#define ISL29028_REG_TEST2_MODE 0x0F - -#define ISL29028_NUM_REGS (ISL29028_REG_TEST2_MODE + 1) - -#define ISL29028_POWER_OFF_DELAY_MS 2000 - -struct isl29028_prox_data { - int sampling_int; - int sampling_fract; - int sleep_time; -}; - -static const struct isl29028_prox_data isl29028_prox_data[] = { - { 1, 250000, 800 }, - { 2, 500000, 400 }, - { 5, 0, 200 }, - { 10, 0, 100 }, - { 13, 300000, 75 }, - { 20, 0, 50 }, - { 80, 0, 13 }, /* - * Note: Data sheet lists 12.5 ms sleep time. - * Round up a half millisecond for msleep(). - */ - { 100, 0, 0 } -}; - -enum isl29028_als_ir_mode { - ISL29028_MODE_NONE = 0, - ISL29028_MODE_ALS, - ISL29028_MODE_IR, -}; - -struct isl29028_chip { - struct mutex lock; - struct regmap *regmap; - int prox_sampling_int; - int prox_sampling_frac; - bool enable_prox; - int lux_scale; - enum isl29028_als_ir_mode als_ir_mode; -}; - -static int isl29028_find_prox_sleep_index(int sampling_int, int sampling_fract) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(isl29028_prox_data); ++i) { - if (isl29028_prox_data[i].sampling_int == sampling_int && - isl29028_prox_data[i].sampling_fract == sampling_fract) - return i; - } - - return -EINVAL; -} - -static int isl29028_set_proxim_sampling(struct isl29028_chip *chip, - int sampling_int, int sampling_fract) -{ - struct device *dev = regmap_get_device(chip->regmap); - int sleep_index, ret; - - sleep_index = isl29028_find_prox_sleep_index(sampling_int, - sampling_fract); - if (sleep_index < 0) - return sleep_index; - - ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, - ISL29028_CONF_PROX_SLP_MASK, - sleep_index << ISL29028_CONF_PROX_SLP_SH); - - if (ret < 0) { - dev_err(dev, "%s(): Error %d setting the proximity sampling\n", - __func__, ret); - return ret; - } - - chip->prox_sampling_int = sampling_int; - chip->prox_sampling_frac = sampling_fract; - - return ret; -} - -static int isl29028_enable_proximity(struct isl29028_chip *chip) -{ - int prox_index, ret; - - ret = isl29028_set_proxim_sampling(chip, chip->prox_sampling_int, - chip->prox_sampling_frac); - if (ret < 0) - return ret; - - ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, - ISL29028_CONF_PROX_EN_MASK, - ISL29028_CONF_PROX_EN); - if (ret < 0) - return ret; - - /* Wait for conversion to be complete for first sample */ - prox_index = isl29028_find_prox_sleep_index(chip->prox_sampling_int, - chip->prox_sampling_frac); - if (prox_index < 0) - return prox_index; - - msleep(isl29028_prox_data[prox_index].sleep_time); - - return 0; -} - -static int isl29028_set_als_scale(struct isl29028_chip *chip, int lux_scale) -{ - struct device *dev = regmap_get_device(chip->regmap); - int val = (lux_scale == 2000) ? ISL29028_CONF_ALS_RANGE_HIGH_LUX : - ISL29028_CONF_ALS_RANGE_LOW_LUX; - int ret; - - ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, - ISL29028_CONF_ALS_RANGE_MASK, val); - if (ret < 0) { - dev_err(dev, "%s(): Error %d setting the ALS scale\n", __func__, - ret); - return ret; - } - - chip->lux_scale = lux_scale; - - return ret; -} - -static int isl29028_set_als_ir_mode(struct isl29028_chip *chip, - enum isl29028_als_ir_mode mode) -{ - int ret; - - if (chip->als_ir_mode == mode) - return 0; - - ret = isl29028_set_als_scale(chip, chip->lux_scale); - if (ret < 0) - return ret; - - switch (mode) { - case ISL29028_MODE_ALS: - ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, - ISL29028_CONF_ALS_IR_MODE_MASK, - ISL29028_CONF_ALS_IR_MODE_ALS); - if (ret < 0) - return ret; - - ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, - ISL29028_CONF_ALS_RANGE_MASK, - ISL29028_CONF_ALS_RANGE_HIGH_LUX); - break; - case ISL29028_MODE_IR: - ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, - ISL29028_CONF_ALS_IR_MODE_MASK, - ISL29028_CONF_ALS_IR_MODE_IR); - break; - case ISL29028_MODE_NONE: - return regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, - ISL29028_CONF_ALS_EN_MASK, - ISL29028_CONF_ALS_DIS); - } - - if (ret < 0) - return ret; - - /* Enable the ALS/IR */ - ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE, - ISL29028_CONF_ALS_EN_MASK, - ISL29028_CONF_ALS_EN); - if (ret < 0) - return ret; - - /* Need to wait for conversion time if ALS/IR mode enabled */ - msleep(ISL29028_CONV_TIME_MS); - - chip->als_ir_mode = mode; - - return 0; -} - -static int isl29028_read_als_ir(struct isl29028_chip *chip, int *als_ir) -{ - struct device *dev = regmap_get_device(chip->regmap); - unsigned int lsb; - unsigned int msb; - int ret; - - ret = regmap_read(chip->regmap, ISL29028_REG_ALSIR_L, &lsb); - if (ret < 0) { - dev_err(dev, - "%s(): Error %d reading register ALSIR_L\n", - __func__, ret); - return ret; - } - - ret = regmap_read(chip->regmap, ISL29028_REG_ALSIR_U, &msb); - if (ret < 0) { - dev_err(dev, - "%s(): Error %d reading register ALSIR_U\n", - __func__, ret); - return ret; - } - - *als_ir = ((msb & 0xF) << 8) | (lsb & 0xFF); - - return 0; -} - -static int isl29028_read_proxim(struct isl29028_chip *chip, int *prox) -{ - struct device *dev = regmap_get_device(chip->regmap); - unsigned int data; - int ret; - - if (!chip->enable_prox) { - ret = isl29028_enable_proximity(chip); - if (ret < 0) - return ret; - - chip->enable_prox = true; - } - - ret = regmap_read(chip->regmap, ISL29028_REG_PROX_DATA, &data); - if (ret < 0) { - dev_err(dev, "%s(): Error %d reading register PROX_DATA\n", - __func__, ret); - return ret; - } - - *prox = data; - - return 0; -} - -static int isl29028_als_get(struct isl29028_chip *chip, int *als_data) -{ - struct device *dev = regmap_get_device(chip->regmap); - int ret; - int als_ir_data; - - ret = isl29028_set_als_ir_mode(chip, ISL29028_MODE_ALS); - if (ret < 0) { - dev_err(dev, "%s(): Error %d enabling ALS mode\n", __func__, - ret); - return ret; - } - - ret = isl29028_read_als_ir(chip, &als_ir_data); - if (ret < 0) - return ret; - - /* - * convert als data count to lux. - * if lux_scale = 125, lux = count * 0.031 - * if lux_scale = 2000, lux = count * 0.49 - */ - if (chip->lux_scale == 125) - als_ir_data = (als_ir_data * 31) / 1000; - else - als_ir_data = (als_ir_data * 49) / 100; - - *als_data = als_ir_data; - - return 0; -} - -static int isl29028_ir_get(struct isl29028_chip *chip, int *ir_data) -{ - struct device *dev = regmap_get_device(chip->regmap); - int ret; - - ret = isl29028_set_als_ir_mode(chip, ISL29028_MODE_IR); - if (ret < 0) { - dev_err(dev, "%s(): Error %d enabling IR mode\n", __func__, - ret); - return ret; - } - - return isl29028_read_als_ir(chip, ir_data); -} - -static int isl29028_set_pm_runtime_busy(struct isl29028_chip *chip, bool on) -{ - struct device *dev = regmap_get_device(chip->regmap); - int ret; - - if (on) { - ret = pm_runtime_get_sync(dev); - if (ret < 0) - pm_runtime_put_noidle(dev); - } else { - pm_runtime_mark_last_busy(dev); - ret = pm_runtime_put_autosuspend(dev); - } - - return ret; -} - -/* Channel IO */ -static int isl29028_write_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, - int val, int val2, long mask) -{ - struct isl29028_chip *chip = iio_priv(indio_dev); - struct device *dev = regmap_get_device(chip->regmap); - int ret; - - ret = isl29028_set_pm_runtime_busy(chip, true); - if (ret < 0) - return ret; - - mutex_lock(&chip->lock); - - ret = -EINVAL; - switch (chan->type) { - case IIO_PROXIMITY: - if (mask != IIO_CHAN_INFO_SAMP_FREQ) { - dev_err(dev, - "%s(): proximity: Mask value 0x%08lx is not supported\n", - __func__, mask); - break; - } - - if (val < 1 || val > 100) { - dev_err(dev, - "%s(): proximity: Sampling frequency %d is not in the range [1:100]\n", - __func__, val); - break; - } - - ret = isl29028_set_proxim_sampling(chip, val, val2); - break; - case IIO_LIGHT: - if (mask != IIO_CHAN_INFO_SCALE) { - dev_err(dev, - "%s(): light: Mask value 0x%08lx is not supported\n", - __func__, mask); - break; - } - - if (val != 125 && val != 2000) { - dev_err(dev, - "%s(): light: Lux scale %d is not in the set {125, 2000}\n", - __func__, val); - break; - } - - ret = isl29028_set_als_scale(chip, val); - break; - default: - dev_err(dev, "%s(): Unsupported channel type %x\n", - __func__, chan->type); - break; - } - - mutex_unlock(&chip->lock); - - if (ret < 0) - return ret; - - ret = isl29028_set_pm_runtime_busy(chip, false); - if (ret < 0) - return ret; - - return ret; -} - -static int isl29028_read_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, - int *val, int *val2, long mask) -{ - struct isl29028_chip *chip = iio_priv(indio_dev); - struct device *dev = regmap_get_device(chip->regmap); - int ret, pm_ret; - - ret = isl29028_set_pm_runtime_busy(chip, true); - if (ret < 0) - return ret; - - mutex_lock(&chip->lock); - - ret = -EINVAL; - switch (mask) { - case IIO_CHAN_INFO_RAW: - case IIO_CHAN_INFO_PROCESSED: - switch (chan->type) { - case IIO_LIGHT: - ret = isl29028_als_get(chip, val); - break; - case IIO_INTENSITY: - ret = isl29028_ir_get(chip, val); - break; - case IIO_PROXIMITY: - ret = isl29028_read_proxim(chip, val); - break; - default: - break; - } - - if (ret < 0) - break; - - ret = IIO_VAL_INT; - break; - case IIO_CHAN_INFO_SAMP_FREQ: - if (chan->type != IIO_PROXIMITY) - break; - - *val = chip->prox_sampling_int; - *val2 = chip->prox_sampling_frac; - ret = IIO_VAL_INT; - break; - case IIO_CHAN_INFO_SCALE: - if (chan->type != IIO_LIGHT) - break; - *val = chip->lux_scale; - ret = IIO_VAL_INT; - break; - default: - dev_err(dev, "%s(): mask value 0x%08lx is not supported\n", - __func__, mask); - break; - } - - mutex_unlock(&chip->lock); - - if (ret < 0) - return ret; - - /** - * Preserve the ret variable if the call to - * isl29028_set_pm_runtime_busy() is successful so the reading - * (if applicable) is returned to user space. - */ - pm_ret = isl29028_set_pm_runtime_busy(chip, false); - if (pm_ret < 0) - return pm_ret; - - return ret; -} - -static IIO_CONST_ATTR(in_proximity_sampling_frequency_available, - "1.25 2.5 5 10 13.3 20 80 100"); -static IIO_CONST_ATTR(in_illuminance_scale_available, "125 2000"); - -#define ISL29028_CONST_ATTR(name) (&iio_const_attr_##name.dev_attr.attr) -static struct attribute *isl29028_attributes[] = { - ISL29028_CONST_ATTR(in_proximity_sampling_frequency_available), - ISL29028_CONST_ATTR(in_illuminance_scale_available), - NULL, -}; - -static const struct attribute_group isl29108_group = { - .attrs = isl29028_attributes, -}; - -static const struct iio_chan_spec isl29028_channels[] = { - { - .type = IIO_LIGHT, - .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) | - BIT(IIO_CHAN_INFO_SCALE), - }, { - .type = IIO_INTENSITY, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - }, { - .type = IIO_PROXIMITY, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_SAMP_FREQ), - } -}; - -static const struct iio_info isl29028_info = { - .attrs = &isl29108_group, - .driver_module = THIS_MODULE, - .read_raw = isl29028_read_raw, - .write_raw = isl29028_write_raw, -}; - -static int isl29028_clear_configure_reg(struct isl29028_chip *chip) -{ - struct device *dev = regmap_get_device(chip->regmap); - int ret; - - ret = regmap_write(chip->regmap, ISL29028_REG_CONFIGURE, 0x0); - if (ret < 0) - dev_err(dev, "%s(): Error %d clearing the CONFIGURE register\n", - __func__, ret); - - chip->als_ir_mode = ISL29028_MODE_NONE; - chip->enable_prox = false; - - return ret; -} - -static bool isl29028_is_volatile_reg(struct device *dev, unsigned int reg) -{ - switch (reg) { - case ISL29028_REG_INTERRUPT: - case ISL29028_REG_PROX_DATA: - case ISL29028_REG_ALSIR_L: - case ISL29028_REG_ALSIR_U: - return true; - default: - return false; - } -} - -static const struct regmap_config isl29028_regmap_config = { - .reg_bits = 8, - .val_bits = 8, - .volatile_reg = isl29028_is_volatile_reg, - .max_register = ISL29028_NUM_REGS - 1, - .num_reg_defaults_raw = ISL29028_NUM_REGS, - .cache_type = REGCACHE_RBTREE, -}; - -static int isl29028_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct isl29028_chip *chip; - struct iio_dev *indio_dev; - int ret; - - 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); - mutex_init(&chip->lock); - - chip->regmap = devm_regmap_init_i2c(client, &isl29028_regmap_config); - if (IS_ERR(chip->regmap)) { - ret = PTR_ERR(chip->regmap); - dev_err(&client->dev, "%s: Error %d initializing regmap\n", - __func__, ret); - return ret; - } - - chip->enable_prox = false; - chip->prox_sampling_int = 20; - chip->prox_sampling_frac = 0; - chip->lux_scale = 2000; - - ret = regmap_write(chip->regmap, ISL29028_REG_TEST1_MODE, 0x0); - if (ret < 0) { - dev_err(&client->dev, - "%s(): Error %d writing to TEST1_MODE register\n", - __func__, ret); - return ret; - } - - ret = regmap_write(chip->regmap, ISL29028_REG_TEST2_MODE, 0x0); - if (ret < 0) { - dev_err(&client->dev, - "%s(): Error %d writing to TEST2_MODE register\n", - __func__, ret); - return ret; - } - - ret = isl29028_clear_configure_reg(chip); - if (ret < 0) - return ret; - - indio_dev->info = &isl29028_info; - indio_dev->channels = isl29028_channels; - indio_dev->num_channels = ARRAY_SIZE(isl29028_channels); - indio_dev->name = id->name; - indio_dev->dev.parent = &client->dev; - indio_dev->modes = INDIO_DIRECT_MODE; - - pm_runtime_enable(&client->dev); - pm_runtime_set_autosuspend_delay(&client->dev, - ISL29028_POWER_OFF_DELAY_MS); - pm_runtime_use_autosuspend(&client->dev); - - ret = devm_iio_device_register(indio_dev->dev.parent, indio_dev); - if (ret < 0) { - dev_err(&client->dev, - "%s(): iio registration failed with error %d\n", - __func__, ret); - return ret; - } - - return 0; -} - -static int isl29028_remove(struct i2c_client *client) -{ - struct iio_dev *indio_dev = i2c_get_clientdata(client); - struct isl29028_chip *chip = iio_priv(indio_dev); - - iio_device_unregister(indio_dev); - - pm_runtime_disable(&client->dev); - pm_runtime_set_suspended(&client->dev); - pm_runtime_put_noidle(&client->dev); - - return isl29028_clear_configure_reg(chip); -} - -static int __maybe_unused isl29028_suspend(struct device *dev) -{ - struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); - struct isl29028_chip *chip = iio_priv(indio_dev); - int ret; - - mutex_lock(&chip->lock); - - ret = isl29028_clear_configure_reg(chip); - - mutex_unlock(&chip->lock); - - return ret; -} - -static int __maybe_unused isl29028_resume(struct device *dev) -{ - /** - * The specific component (ALS/IR or proximity) will enable itself as - * needed the next time that the user requests a reading. This is done - * above in isl29028_set_als_ir_mode() and isl29028_enable_proximity(). - */ - return 0; -} - -static const struct dev_pm_ops isl29028_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, - pm_runtime_force_resume) - SET_RUNTIME_PM_OPS(isl29028_suspend, isl29028_resume, NULL) -}; - -static const struct i2c_device_id isl29028_id[] = { - {"isl29028", 0}, - {} -}; -MODULE_DEVICE_TABLE(i2c, isl29028_id); - -static const struct of_device_id isl29028_of_match[] = { - { .compatible = "isl,isl29028", }, /* for backward compat., don't use */ - { .compatible = "isil,isl29028", }, - { }, -}; -MODULE_DEVICE_TABLE(of, isl29028_of_match); - -static struct i2c_driver isl29028_driver = { - .driver = { - .name = "isl29028", - .pm = &isl29028_pm_ops, - .of_match_table = isl29028_of_match, - }, - .probe = isl29028_probe, - .remove = isl29028_remove, - .id_table = isl29028_id, -}; - -module_i2c_driver(isl29028_driver); - -MODULE_DESCRIPTION("ISL29028 Ambient Light and Proximity Sensor driver"); -MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Laxman Dewangan <ldewangan@xxxxxxxxxx>"); -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
