diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-11 14:12:12 -0800 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-11 14:12:12 -0800 |
commit | e5b9c0577206083c5bc501f8b77554dc7a5e6388 (patch) | |
tree | 1bf59db885f6ff7b17129020fb3a7600964bb6b0 /drivers/iio | |
parent | 81291dd9484dd16e795ab4a69d16b401b2aa5821 (diff) | |
parent | 7da773e61831d677bfbe2bfcf10d39430f5a5bc2 (diff) | |
download | linux-stable-e5b9c0577206083c5bc501f8b77554dc7a5e6388.tar.gz linux-stable-e5b9c0577206083c5bc501f8b77554dc7a5e6388.tar.bz2 linux-stable-e5b9c0577206083c5bc501f8b77554dc7a5e6388.zip |
Merge tag 'iio-for-3.15a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First set of new drivers and cleanups for IIO in the 3.15 cycle.
New drivers:
* si7005 relative humidity and temperature sensor
* Lite-on ltr501 ambient light and proximity sensor
Cleanups
* Clean up some dead comments in max1363
* Drop some obsolete variables in adjd_s311 and tcs3472 left over from
the introduction of iio_push_to_buffers_with_timestamp.
* Drop some unneeded linux/init.h includes
* Squish a sparse warning in mpl3115 by correctly specifying a be32 variable.
* A number of cleanups and fixes for sca3000
* Drop an unneed checks in mxs-lradc, ad7303 and adis16400.
* Drop a platform_set_drvdata in viperboard after the only use of it was
removed during a devm conversion.
* Add a missing device name for ak8975 to comply with the ABI.
* Put mpu6050 into the IMU menu as it slipped out into the main menu.
* Fix a typo and some comment formatting in mpu6050.
* Document at91 ADC clock properties.
Diffstat (limited to 'drivers/iio')
-rw-r--r-- | drivers/iio/adc/max1363.c | 10 | ||||
-rw-r--r-- | drivers/iio/adc/ti_am335x_adc.c | 1 | ||||
-rw-r--r-- | drivers/iio/adc/twl6030-gpadc.c | 1 | ||||
-rw-r--r-- | drivers/iio/adc/viperboard_adc.c | 2 | ||||
-rw-r--r-- | drivers/iio/dac/ad7303.c | 2 | ||||
-rw-r--r-- | drivers/iio/dac/max517.c | 1 | ||||
-rw-r--r-- | drivers/iio/dac/mcp4725.c | 1 | ||||
-rw-r--r-- | drivers/iio/humidity/Kconfig | 10 | ||||
-rw-r--r-- | drivers/iio/humidity/Makefile | 1 | ||||
-rw-r--r-- | drivers/iio/humidity/si7005.c | 189 | ||||
-rw-r--r-- | drivers/iio/imu/Kconfig | 4 | ||||
-rw-r--r-- | drivers/iio/imu/adis16400_core.c | 2 | ||||
-rw-r--r-- | drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 3 | ||||
-rw-r--r-- | drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h | 38 | ||||
-rw-r--r-- | drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c | 1 | ||||
-rw-r--r-- | drivers/iio/light/Kconfig | 12 | ||||
-rw-r--r-- | drivers/iio/light/Makefile | 1 | ||||
-rw-r--r-- | drivers/iio/light/adjd_s311.c | 3 | ||||
-rw-r--r-- | drivers/iio/light/ltr501.c | 445 | ||||
-rw-r--r-- | drivers/iio/light/tcs3472.c | 2 | ||||
-rw-r--r-- | drivers/iio/magnetometer/ak8975.c | 1 | ||||
-rw-r--r-- | drivers/iio/pressure/mpl3115.c | 2 |
22 files changed, 686 insertions, 46 deletions
diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c index 360259266d4f..ce84b012f7df 100644 --- a/drivers/iio/adc/max1363.c +++ b/drivers/iio/adc/max1363.c @@ -8,17 +8,11 @@ * based on linux/drivers/acron/char/pcf8583.c * Copyright (C) 2000 Russell King * + * Driver for max1363 and similar chips. + * * 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. - * - * max1363.c - * - * Partial support for max1363 and similar chips. - * - * Not currently implemented. - * - * - Control of internal reference. */ #include <linux/interrupt.h> diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index 31e786e3999b..a4db3026bec6 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -13,7 +13,6 @@ * GNU General Public License for more details. */ -#include <linux/init.h> #include <linux/kernel.h> #include <linux/err.h> #include <linux/module.h> diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c index 53a24ebb92c3..15282f148b3b 100644 --- a/drivers/iio/adc/twl6030-gpadc.c +++ b/drivers/iio/adc/twl6030-gpadc.c @@ -28,7 +28,6 @@ * 02110-1301 USA * */ -#include <linux/init.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/module.h> diff --git a/drivers/iio/adc/viperboard_adc.c b/drivers/iio/adc/viperboard_adc.c index d0add8f9416b..9acf6b6d705b 100644 --- a/drivers/iio/adc/viperboard_adc.c +++ b/drivers/iio/adc/viperboard_adc.c @@ -139,8 +139,6 @@ static int vprbrd_adc_probe(struct platform_device *pdev) return ret; } - platform_set_drvdata(pdev, indio_dev); - return 0; } diff --git a/drivers/iio/dac/ad7303.c b/drivers/iio/dac/ad7303.c index d0505fd22ef4..fa2810032968 100644 --- a/drivers/iio/dac/ad7303.c +++ b/drivers/iio/dac/ad7303.c @@ -92,7 +92,7 @@ static ssize_t ad7303_write_dac_powerdown(struct iio_dev *indio_dev, ad7303_write(st, chan->channel, st->dac_cache[chan->channel]); mutex_unlock(&indio_dev->mlock); - return ret ? ret : len; + return len; } static int ad7303_get_vref(struct ad7303_state *st, diff --git a/drivers/iio/dac/max517.c b/drivers/iio/dac/max517.c index de76e6a34c1e..9a82a7255ebb 100644 --- a/drivers/iio/dac/max517.c +++ b/drivers/iio/dac/max517.c @@ -19,7 +19,6 @@ */ #include <linux/module.h> -#include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/i2c.h> diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c index 7d9f5c31d2fc..43d14588448d 100644 --- a/drivers/iio/dac/mcp4725.c +++ b/drivers/iio/dac/mcp4725.c @@ -15,7 +15,6 @@ */ #include <linux/module.h> -#include <linux/init.h> #include <linux/i2c.h> #include <linux/err.h> #include <linux/delay.h> diff --git a/drivers/iio/humidity/Kconfig b/drivers/iio/humidity/Kconfig index 463c4d9da79e..e116bd8dd0e4 100644 --- a/drivers/iio/humidity/Kconfig +++ b/drivers/iio/humidity/Kconfig @@ -12,4 +12,14 @@ config DHT11 Other sensors should work as well as long as they speak the same protocol. +config SI7005 + tristate "SI7005 relative humidity and temperature sensor" + depends on I2C + help + Say yes here to build support for the Silabs Si7005 relative + humidity and temperature sensor. + + To compile this driver as a module, choose M here: the module + will be called si7005. + endmenu diff --git a/drivers/iio/humidity/Makefile b/drivers/iio/humidity/Makefile index d5d36c0c95f9..e3f3d942e646 100644 --- a/drivers/iio/humidity/Makefile +++ b/drivers/iio/humidity/Makefile @@ -3,3 +3,4 @@ # obj-$(CONFIG_DHT11) += dht11.o +obj-$(CONFIG_SI7005) += si7005.o diff --git a/drivers/iio/humidity/si7005.c b/drivers/iio/humidity/si7005.c new file mode 100644 index 000000000000..bdd586e6d955 --- /dev/null +++ b/drivers/iio/humidity/si7005.c @@ -0,0 +1,189 @@ +/* + * si7005.c - Support for Silabs Si7005 humidity and temperature sensor + * + * Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net> + * + * This file is subject to the terms and conditions of version 2 of + * the GNU General Public License. See the file COPYING in the main + * directory of this archive for more details. + * + * (7-bit I2C slave address 0x40) + * + * TODO: heater, fast mode, processed mode (temp. / linearity compensation) + */ + +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/pm.h> + +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> + +#define SI7005_STATUS 0x00 +#define SI7005_DATA 0x01 /* 16-bit, MSB */ +#define SI7005_CONFIG 0x03 +#define SI7005_ID 0x11 + +#define SI7005_STATUS_NRDY BIT(0) +#define SI7005_CONFIG_TEMP BIT(4) +#define SI7005_CONFIG_START BIT(0) + +#define SI7005_ID_7005 0x50 +#define SI7005_ID_7015 0xf0 + +struct si7005_data { + struct i2c_client *client; + struct mutex lock; + u8 config; +}; + +static int si7005_read_measurement(struct si7005_data *data, bool temp) +{ + int tries = 50; + int ret; + + mutex_lock(&data->lock); + + ret = i2c_smbus_write_byte_data(data->client, SI7005_CONFIG, + data->config | SI7005_CONFIG_START | + (temp ? SI7005_CONFIG_TEMP : 0)); + if (ret < 0) + goto done; + + while (tries-- > 0) { + msleep(20); + ret = i2c_smbus_read_byte_data(data->client, SI7005_STATUS); + if (ret < 0) + goto done; + if (!(ret & SI7005_STATUS_NRDY)) + break; + } + if (tries < 0) { + ret = -EIO; + goto done; + } + + ret = i2c_smbus_read_word_swapped(data->client, SI7005_DATA); + +done: + mutex_unlock(&data->lock); + + return ret; +} + +static int si7005_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct si7005_data *data = iio_priv(indio_dev); + int ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = si7005_read_measurement(data, chan->type == IIO_TEMP); + if (ret < 0) + return ret; + *val = ret; + return IIO_VAL_INT; + case IIO_CHAN_INFO_SCALE: + if (chan->type == IIO_TEMP) { + *val = 7; + *val2 = 812500; + } else { + *val = 3; + *val2 = 906250; + } + return IIO_VAL_INT_PLUS_MICRO; + case IIO_CHAN_INFO_OFFSET: + if (chan->type == IIO_TEMP) + *val = -50 * 32 * 4; + else + *val = -24 * 16 * 16; + return IIO_VAL_INT; + default: + break; + } + + return -EINVAL; +} + +static const struct iio_chan_spec si7005_channels[] = { + { + .type = IIO_HUMIDITYRELATIVE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET), + }, + { + .type = IIO_TEMP, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET), + } +}; + +static const struct iio_info si7005_info = { + .read_raw = si7005_read_raw, + .driver_module = THIS_MODULE, +}; + +static int si7005_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct iio_dev *indio_dev; + struct si7005_data *data; + int ret; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA)) + return -ENODEV; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + data->client = client; + mutex_init(&data->lock); + + indio_dev->dev.parent = &client->dev; + indio_dev->name = dev_name(&client->dev); + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->info = &si7005_info; + + indio_dev->channels = si7005_channels; + indio_dev->num_channels = ARRAY_SIZE(si7005_channels); + + ret = i2c_smbus_read_byte_data(client, SI7005_ID); + if (ret < 0) + return ret; + if (ret != SI7005_ID_7005 && ret != SI7005_ID_7015) + return -ENODEV; + + ret = i2c_smbus_read_byte_data(client, SI7005_CONFIG); + if (ret < 0) + return ret; + data->config = ret; + + return devm_iio_device_register(&client->dev, indio_dev); +} + +static const struct i2c_device_id si7005_id[] = { + { "si7005", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, si7005_id); + +static struct i2c_driver si7005_driver = { + .driver = { + .name = "si7005", + .owner = THIS_MODULE, + }, + .probe = si7005_probe, + .id_table = si7005_id, +}; +module_i2c_driver(si7005_driver); + +MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>"); +MODULE_DESCRIPTION("Silabs Si7005 humidity and temperature sensor driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/iio/imu/Kconfig b/drivers/iio/imu/Kconfig index 663e88a1a3c1..2b0e45133e9d 100644 --- a/drivers/iio/imu/Kconfig +++ b/drivers/iio/imu/Kconfig @@ -25,6 +25,8 @@ config ADIS16480 Say yes here to build support for Analog Devices ADIS16375, ADIS16480, ADIS16485, ADIS16488 inertial sensors. +source "drivers/iio/imu/inv_mpu6050/Kconfig" + endmenu config IIO_ADIS_LIB @@ -38,5 +40,3 @@ config IIO_ADIS_LIB_BUFFER help A set of buffer helper functions for the Analog Devices ADIS* device family. - -source "drivers/iio/imu/inv_mpu6050/Kconfig" diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c index 7c582f7ae34e..433583b6f800 100644 --- a/drivers/iio/imu/adis16400_core.c +++ b/drivers/iio/imu/adis16400_core.c @@ -281,7 +281,7 @@ static ssize_t adis16400_write_frequency(struct device *dev, st->variant->set_freq(st, val); mutex_unlock(&indio_dev->mlock); - return ret ? ret : len; + return len; } /* Power down the device */ diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c index df7f1e1157ae..cb9f96b446a5 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c @@ -12,7 +12,6 @@ */ #include <linux/module.h> -#include <linux/init.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/err.h> @@ -117,7 +116,7 @@ int inv_mpu6050_switch_engine(struct inv_mpu6050_state *st, bool en, u32 mask) return result; if (en) { - /* Wait for output stablize */ + /* Wait for output stabilize */ msleep(INV_MPU6050_TEMP_UP_TIME); if (INV_MPU6050_BIT_PWR_GYRO_STBY == mask) { /* switch internal clock to PLL */ diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h index f38395529a44..0ab382be1e64 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h @@ -126,35 +126,35 @@ struct inv_mpu6050_state { #define INV_MPU6050_REG_SAMPLE_RATE_DIV 0x19 #define INV_MPU6050_REG_CONFIG 0x1A #define INV_MPU6050_REG_GYRO_CONFIG 0x1B -#define INV_MPU6050_REG_ACCEL_CONFIG 0x1C +#define INV_MPU6050_REG_ACCEL_CONFIG 0x1C #define INV_MPU6050_REG_FIFO_EN 0x23 -#define INV_MPU6050_BIT_ACCEL_OUT 0x08 -#define INV_MPU6050_BITS_GYRO_OUT 0x70 +#define INV_MPU6050_BIT_ACCEL_OUT 0x08 +#define INV_MPU6050_BITS_GYRO_OUT 0x70 #define INV_MPU6050_REG_INT_ENABLE 0x38 -#define INV_MPU6050_BIT_DATA_RDY_EN 0x01 -#define INV_MPU6050_BIT_DMP_INT_EN 0x02 +#define INV_MPU6050_BIT_DATA_RDY_EN 0x01 +#define INV_MPU6050_BIT_DMP_INT_EN 0x02 #define INV_MPU6050_REG_RAW_ACCEL 0x3B #define INV_MPU6050_REG_TEMPERATURE 0x41 #define INV_MPU6050_REG_RAW_GYRO 0x43 #define INV_MPU6050_REG_USER_CTRL 0x6A -#define INV_MPU6050_BIT_FIFO_RST 0x04 -#define INV_MPU6050_BIT_DMP_RST 0x08 -#define INV_MPU6050_BIT_I2C_MST_EN 0x20 -#define INV_MPU6050_BIT_FIFO_EN 0x40 -#define INV_MPU6050_BIT_DMP_EN 0x80 +#define INV_MPU6050_BIT_FIFO_RST 0x04 +#define INV_MPU6050_BIT_DMP_RST 0x08 +#define INV_MPU6050_BIT_I2C_MST_EN 0x20 +#define INV_MPU6050_BIT_FIFO_EN 0x40 +#define INV_MPU6050_BIT_DMP_EN 0x80 #define INV_MPU6050_REG_PWR_MGMT_1 0x6B -#define INV_MPU6050_BIT_H_RESET 0x80 -#define INV_MPU6050_BIT_SLEEP 0x40 -#define INV_MPU6050_BIT_CLK_MASK 0x7 +#define INV_MPU6050_BIT_H_RESET 0x80 +#define INV_MPU6050_BIT_SLEEP 0x40 +#define INV_MPU6050_BIT_CLK_MASK 0x7 #define INV_MPU6050_REG_PWR_MGMT_2 0x6C -#define INV_MPU6050_BIT_PWR_ACCL_STBY 0x38 -#define INV_MPU6050_BIT_PWR_GYRO_STBY 0x07 +#define INV_MPU6050_BIT_PWR_ACCL_STBY 0x38 +#define INV_MPU6050_BIT_PWR_GYRO_STBY 0x07 #define INV_MPU6050_REG_FIFO_COUNT_H 0x72 #define INV_MPU6050_REG_FIFO_R_W 0x74 @@ -180,10 +180,10 @@ struct inv_mpu6050_state { /* init parameters */ #define INV_MPU6050_INIT_FIFO_RATE 50 -#define INV_MPU6050_TIME_STAMP_TOR 5 -#define INV_MPU6050_MAX_FIFO_RATE 1000 -#define INV_MPU6050_MIN_FIFO_RATE 4 -#define INV_MPU6050_ONE_K_HZ 1000 +#define INV_MPU6050_TIME_STAMP_TOR 5 +#define INV_MPU6050_MAX_FIFO_RATE 1000 +#define INV_MPU6050_MIN_FIFO_RATE 4 +#define INV_MPU6050_ONE_K_HZ 1000 /* scan element definition */ enum inv_mpu6050_scan { diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c index 429517117eff..0cd306a72a6e 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c @@ -12,7 +12,6 @@ */ #include <linux/module.h> -#include <linux/init.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/err.h> diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig index d12b2a0dbfbc..3a7a5d9f03a3 100644 --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -90,6 +90,18 @@ config SENSORS_LM3533 changes. The ALS-control output values can be set per zone for the three current output channels. +config LTR501 + tristate "LTR-501ALS-01 light sensor" + depends on I2C + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + help + If you say yes here you get support for the Lite-On LTR-501ALS-01 + ambient light and proximity sensor. + + This driver can also be built as a module. If so, the module + will be called ltr501. + config TCS3472 tristate "TAOS TCS3472 color light-to-digital converter" depends on I2C diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile index 60e35ac07ff0..924530597f83 100644 --- a/drivers/iio/light/Makefile +++ b/drivers/iio/light/Makefile @@ -10,6 +10,7 @@ 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 +obj-$(CONFIG_LTR501) += ltr501.o obj-$(CONFIG_SENSORS_TSL2563) += tsl2563.o obj-$(CONFIG_TCS3472) += tcs3472.o obj-$(CONFIG_TSL4531) += tsl4531.o diff --git a/drivers/iio/light/adjd_s311.c b/drivers/iio/light/adjd_s311.c index f3068477b466..09ad5f1ce539 100644 --- a/drivers/iio/light/adjd_s311.c +++ b/drivers/iio/light/adjd_s311.c @@ -14,7 +14,6 @@ */ #include <linux/module.h> -#include <linux/init.h> #include <linux/interrupt.h> #include <linux/i2c.h> #include <linux/slab.h> @@ -120,7 +119,6 @@ static irqreturn_t adjd_s311_trigger_handler(int irq, void *p) struct iio_dev *indio_dev = pf->indio_dev; struct adjd_s311_data *data = iio_priv(indio_dev); s64 time_ns = iio_get_time_ns(); - int len = 0; int i, j = 0; int ret = adjd_s311_req_data(indio_dev); @@ -135,7 +133,6 @@ static irqreturn_t adjd_s311_trigger_handler(int irq, void *p) goto done; data->buffer[j++] = ret & ADJD_S311_DATA_MASK; - len += 2; } iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, time_ns); diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c new file mode 100644 index 000000000000..62b7072af4de --- /dev/null +++ b/drivers/iio/light/ltr501.c @@ -0,0 +1,445 @@ +/* + * ltr501.c - Support for Lite-On LTR501 ambient light and proximity sensor + * + * Copyright 2014 Peter Meerwald <pmeerw@pmeerw.net> + * + * This file is subject to the terms and conditions of version 2 of + * the GNU General Public License. See the file COPYING in the main + * directory of this archive for more details. + * + * 7-bit I2C slave address 0x23 + * + * TODO: interrupt, threshold, measurement rate, IR LED characteristics + */ + +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/err.h> +#include <linux/delay.h> + +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> +#include <linux/iio/trigger_consumer.h> +#include <linux/iio/buffer.h> +#include <linux/iio/triggered_buffer.h> + +#define LTR501_DRV_NAME "ltr501" + +#define LTR501_ALS_CONTR 0x80 /* ALS operation mode, SW reset */ +#define LTR501_PS_CONTR 0x81 /* PS operation mode */ +#define LTR501_PART_ID 0x86 +#define LTR501_MANUFAC_ID 0x87 +#define LTR501_ALS_DATA1 0x88 /* 16-bit, little endian */ +#define LTR501_ALS_DATA0 0x8a /* 16-bit, little endian */ +#define LTR501_ALS_PS_STATUS 0x8c +#define LTR501_PS_DATA 0x8d /* 16-bit, little endian */ + +#define LTR501_ALS_CONTR_SW_RESET BIT(2) +#define LTR501_CONTR_PS_GAIN_MASK (BIT(3) | BIT(2)) +#define LTR501_CONTR_PS_GAIN_SHIFT 2 +#define LTR501_CONTR_ALS_GAIN_MASK BIT(3) +#define LTR501_CONTR_ACTIVE BIT(1) + +#define LTR501_STATUS_ALS_RDY BIT(2) +#define LTR501_STATUS_PS_RDY BIT(0) + +#define LTR501_PS_DATA_MASK 0x7ff + +struct ltr501_data { + struct i2c_client *client; + struct mutex lock_als, lock_ps; + u8 als_contr, ps_contr; +}; + +static int ltr501_drdy(struct ltr501_data *data, u8 drdy_mask) +{ + int tries = 100; + int ret; + + while (tries--) { + ret = i2c_smbus_read_byte_data(data->client, + LTR501_ALS_PS_STATUS); + if (ret < 0) + return ret; + if ((ret & drdy_mask) == drdy_mask) + return 0; + msleep(25); + } + + dev_err(&data->client->dev, "ltr501_drdy() failed, data not ready\n"); + return -EIO; +} + +static int ltr501_read_als(struct ltr501_data *data, __le16 buf[2]) +{ + int ret = ltr501_drdy(data, LTR501_STATUS_ALS_RDY); + if (ret < 0) + return ret; + /* always read both ALS channels in given order */ + return i2c_smbus_read_i2c_block_data(data->client, + LTR501_ALS_DATA1, 2 * sizeof(__le16), (u8 *) buf); +} + +static int ltr501_read_ps(struct ltr501_data *data) +{ + int ret = ltr501_drdy(data, LTR501_STATUS_PS_RDY); + if (ret < 0) + return ret; + return i2c_smbus_read_word_data(data->client, LTR501_PS_DATA); +} + +#define LTR501_INTENSITY_CHANNEL(_idx, _addr, _mod, _shared) { \ + .type = IIO_INTENSITY, \ + .modified = 1, \ + .address = (_addr), \ + .channel2 = (_mod), \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = (_shared), \ + .scan_index = (_idx), \ + .scan_type = { \ + .sign = 'u', \ + .realbits = 16, \ + .storagebits = 16, \ + .endianness = IIO_CPU, \ + } \ +} + +static const struct iio_chan_spec ltr501_channels[] = { + LTR501_INTENSITY_CHANNEL(0, LTR501_ALS_DATA0, IIO_MOD_LIGHT_BOTH, 0), + LTR501_INTENSITY_CHANNEL(1, LTR501_ALS_DATA1, IIO_MOD_LIGHT_IR, + BIT(IIO_CHAN_INFO_SCALE)), + { + .type = IIO_PROXIMITY, + .address = LTR501_PS_DATA, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .scan_index = 2, + .scan_type = { + .sign = 'u', + .realbits = 11, + .storagebits = 16, + .endianness = IIO_CPU, + }, + }, + IIO_CHAN_SOFT_TIMESTAMP(3), +}; + +static const int ltr501_ps_gain[4][2] = { + {1, 0}, {0, 250000}, {0, 125000}, {0, 62500} +}; + +static int ltr501_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct ltr501_data *data = iio_priv(indio_dev); + __le16 buf[2]; + int ret, i; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + if (iio_buffer_enabled(indio_dev)) + return -EBUSY; + + switch (chan->type) { + case IIO_INTENSITY: + mutex_lock(&data->lock_als); + ret = ltr501_read_als(data, buf); + mutex_unlock(&data->lock_als); + if (ret < 0) + return ret; + *val = le16_to_cpu(chan->address == LTR501_ALS_DATA1 ? + buf[0] : buf[1]); + return IIO_VAL_INT; + case IIO_PROXIMITY: + mutex_lock(&data->lock_ps); + ret = ltr501_read_ps(data); + mutex_unlock(&data->lock_ps); + if (ret < 0) + return ret; + *val = ret & LTR501_PS_DATA_MASK; + return IIO_VAL_INT; + default: + return -EINVAL; + } + case IIO_CHAN_INFO_SCALE: + switch (chan->type) { + case IIO_INTENSITY: + if (data->als_contr & LTR501_CONTR_ALS_GAIN_MASK) { + *val = 0; + *val2 = 5000; + return IIO_VAL_INT_PLUS_MICRO; + } else { + *val = 1; + *val2 = 0; + return IIO_VAL_INT; + } + case IIO_PROXIMITY: + i = (data->ps_contr & LTR501_CONTR_PS_GAIN_MASK) >> + LTR501_CONTR_PS_GAIN_SHIFT; + *val = ltr501_ps_gain[i][0]; + *val2 = ltr501_ps_gain[i][1]; + return IIO_VAL_INT_PLUS_MICRO; + default: + return -EINVAL; + } + } + return -EINVAL; +} + +static int ltr501_get_ps_gain_index(int val, int val2) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(ltr501_ps_gain); i++) + if (val == ltr501_ps_gain[i][0] && val2 == ltr501_ps_gain[i][1]) + return i; + + return -1; +} + +static int ltr501_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct ltr501_data *data = iio_priv(indio_dev); + int i; + + if (iio_buffer_enabled(indio_dev)) + return -EBUSY; + + switch (mask) { + case IIO_CHAN_INFO_SCALE: + switch (chan->type) { + case IIO_INTENSITY: + if (val == 0 && val2 == 5000) + data->als_contr |= LTR501_CONTR_ALS_GAIN_MASK; + else if (val == 1 && val2 == 0) + data->als_contr &= ~LTR501_CONTR_ALS_GAIN_MASK; + else + return -EINVAL; + return i2c_smbus_write_byte_data(data->client, + LTR501_ALS_CONTR, data->als_contr); + case IIO_PROXIMITY: + i = ltr501_get_ps_gain_index(val, val2); + if (i < 0) + return -EINVAL; + data->ps_contr &= ~LTR501_CONTR_PS_GAIN_MASK; + data->ps_contr |= i << LTR501_CONTR_PS_GAIN_SHIFT; + return i2c_smbus_write_byte_data(data->client, + LTR501_PS_CONTR, data->ps_contr); + default: + return -EINVAL; + } + } + return -EINVAL; +} + +static IIO_CONST_ATTR(in_proximity_scale_available, "1 0.25 0.125 0.0625"); +static IIO_CONST_ATTR(in_intensity_scale_available, "1 0.005"); + +static struct attribute *ltr501_attributes[] = { + &iio_const_attr_in_proximity_scale_available.dev_attr.attr, + &iio_const_attr_in_intensity_scale_available.dev_attr.attr, + NULL +}; + +static const struct attribute_group ltr501_attribute_group = { + .attrs = ltr501_attributes, +}; + +static const struct iio_info ltr501_info = { + .read_raw = ltr501_read_raw, + .write_raw = ltr501_write_raw, + .attrs = <r501_attribute_group, + .driver_module = THIS_MODULE, +}; + +static int ltr501_write_contr(struct i2c_client *client, u8 als_val, u8 ps_val) +{ + int ret = i2c_smbus_write_byte_data(client, LTR501_ALS_CONTR, als_val); + if (ret < 0) + return ret; + + return i2c_smbus_write_byte_data(client, LTR501_PS_CONTR, ps_val); +} + +static irqreturn_t ltr501_trigger_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + struct ltr501_data *data = iio_priv(indio_dev); + u16 buf[8]; + __le16 als_buf[2]; + u8 mask = 0; + int j = 0; + int ret; + + memset(buf, 0, sizeof(buf)); + + /* figure out which data needs to be ready */ + if (test_bit(0, indio_dev->active_scan_mask) || + test_bit(1, indio_dev->active_scan_mask)) + mask |= LTR501_STATUS_ALS_RDY; + if (test_bit(2, indio_dev->active_scan_mask)) + mask |= LTR501_STATUS_PS_RDY; + + ret = ltr501_drdy(data, mask); + if (ret < 0) + goto done; + + if (mask & LTR501_STATUS_ALS_RDY) { + ret = i2c_smbus_read_i2c_block_data(data->client, + LTR501_ALS_DATA1, sizeof(als_buf), (u8 *) als_buf); + if (ret < 0) + return ret; + if (test_bit(0, indio_dev->active_scan_mask)) + buf[j++] = le16_to_cpu(als_buf[1]); + if (test_bit(1, indio_dev->active_scan_mask)) + buf[j++] = le16_to_cpu(als_buf[0]); + } + + if (mask & LTR501_STATUS_PS_RDY) { + ret = i2c_smbus_read_word_data(data->client, LTR501_PS_DATA); + if (ret < 0) + goto done; + buf[j++] = ret & LTR501_PS_DATA_MASK; + } + + iio_push_to_buffers_with_timestamp(indio_dev, buf, + iio_get_time_ns()); + +done: + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} + +static int ltr501_init(struct ltr501_data *data) +{ + int ret; + + ret = i2c_smbus_read_byte_data(data->client, LTR501_ALS_CONTR); + if (ret < 0) + return ret; + data->als_contr = ret | LTR501_CONTR_ACTIVE; + + ret = i2c_smbus_read_byte_data(data->client, LTR501_PS_CONTR); + if (ret < 0) + return ret; + data->ps_contr = ret | LTR501_CONTR_ACTIVE; + + return ltr501_write_contr(data->client, data->als_contr, + data->ps_contr); +} + +static int ltr501_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct ltr501_data *data; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + data->client = client; + mutex_init(&data->lock_als); + mutex_init(&data->lock_ps); + + ret = i2c_smbus_read_byte_data(data->client, LTR501_PART_ID); + if (ret < 0) + return ret; + if ((ret >> 4) != 0x8) + return -ENODEV; + + indio_dev->dev.parent = &client->dev; + indio_dev->info = <r501_info; + indio_dev->channels = ltr501_channels; + indio_dev->num_channels = ARRAY_SIZE(ltr501_channels); + indio_dev->name = LTR501_DRV_NAME; + indio_dev->modes = INDIO_DIRECT_MODE; + + ret = ltr501_init(data); + if (ret < 0) + return ret; + + ret = iio_triggered_buffer_setup(indio_dev, NULL, + ltr501_trigger_handler, NULL); + if (ret) + return ret; + + ret = iio_device_register(indio_dev); + if (ret) + goto error_unreg_buffer; + + return 0; + +error_unreg_buffer: + iio_triggered_buffer_cleanup(indio_dev); + return ret; +} + +static int ltr501_powerdown(struct ltr501_data *data) +{ + return ltr501_write_contr(data->client, + data->als_contr & ~LTR501_CONTR_ACTIVE, + data->ps_contr & ~LTR501_CONTR_ACTIVE); +} + +static int ltr501_remove(struct i2c_client *client) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(client); + + iio_device_unregister(indio_dev); + iio_triggered_buffer_cleanup(indio_dev); + ltr501_powerdown(iio_priv(indio_dev)); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int ltr501_suspend(struct device *dev) +{ + struct ltr501_data *data = iio_priv(i2c_get_clientdata( + to_i2c_client(dev))); + return ltr501_powerdown(data); +} + +static int ltr501_resume(struct device *dev) +{ + struct ltr501_data *data = iio_priv(i2c_get_clientdata( + to_i2c_client(dev))); + + return ltr501_write_contr(data->client, data->als_contr, + data->ps_contr); +} +#endif + +static SIMPLE_DEV_PM_OPS(ltr501_pm_ops, ltr501_suspend, ltr501_resume); + +static const struct i2c_device_id ltr501_id[] = { + { "ltr501", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ltr501_id); + +static struct i2c_driver ltr501_driver = { + .driver = { + .name = LTR501_DRV_NAME, + .pm = <r501_pm_ops, + .owner = THIS_MODULE, + }, + .probe = ltr501_probe, + .remove = ltr501_remove, + .id_table = ltr501_id, +}; + +module_i2c_driver(ltr501_driver); + +MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>"); +MODULE_DESCRIPTION("Lite-On LTR501 ambient light and proximity sensor driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/iio/light/tcs3472.c b/drivers/iio/light/tcs3472.c index 887fecf1f9bb..fe063a0a21cd 100644 --- a/drivers/iio/light/tcs3472.c +++ b/drivers/iio/light/tcs3472.c @@ -179,7 +179,6 @@ static irqreturn_t tcs3472_trigger_handler(int irq, void *p) struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; struct tcs3472_data *data = iio_priv(indio_dev); - int len = 0; int i, j = 0; int ret = tcs3472_req_data(data); @@ -194,7 +193,6 @@ static irqreturn_t tcs3472_trigger_handler(int irq, void *p) goto done; data->buffer[j++] = ret; - len += 2; } iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c index 05423543f89d..74866d1efd1b 100644 --- a/drivers/iio/magnetometer/ak8975.c +++ b/drivers/iio/magnetometer/ak8975.c @@ -513,6 +513,7 @@ static int ak8975_probe(struct i2c_client *client, indio_dev->channels = ak8975_channels; indio_dev->num_channels = ARRAY_SIZE(ak8975_channels); indio_dev->info = &ak8975_info; + indio_dev->name = id->name; indio_dev->modes = INDIO_DIRECT_MODE; err = iio_device_register(indio_dev); diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c index ac8c8ab723e5..ba6d0c520e63 100644 --- a/drivers/iio/pressure/mpl3115.c +++ b/drivers/iio/pressure/mpl3115.c @@ -77,7 +77,7 @@ static int mpl3115_read_raw(struct iio_dev *indio_dev, int *val, int *val2, long mask) { struct mpl3115_data *data = iio_priv(indio_dev); - s32 tmp = 0; + __be32 tmp = 0; int ret; switch (mask) { |