diff options
Diffstat (limited to 'drivers/iio')
50 files changed, 4897 insertions, 115 deletions
diff --git a/drivers/iio/Kconfig b/drivers/iio/Kconfig index 66792e707d74..6b8c77c97d40 100644 --- a/drivers/iio/Kconfig +++ b/drivers/iio/Kconfig @@ -50,6 +50,7 @@ source "drivers/iio/amplifiers/Kconfig" source "drivers/iio/chemical/Kconfig" source "drivers/iio/common/Kconfig" source "drivers/iio/dac/Kconfig" +source "drivers/iio/dummy/Kconfig" source "drivers/iio/frequency/Kconfig" source "drivers/iio/gyro/Kconfig" source "drivers/iio/humidity/Kconfig" diff --git a/drivers/iio/Makefile b/drivers/iio/Makefile index aeca7269fe44..6769f2f43e86 100644 --- a/drivers/iio/Makefile +++ b/drivers/iio/Makefile @@ -16,6 +16,7 @@ obj-y += buffer/ obj-y += chemical/ obj-y += common/ obj-y += dac/ +obj-y += dummy/ obj-y += gyro/ obj-y += frequency/ obj-y += humidity/ diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig index 969428dd6329..edc29b173f6c 100644 --- a/drivers/iio/accel/Kconfig +++ b/drivers/iio/accel/Kconfig @@ -64,7 +64,7 @@ config IIO_ST_ACCEL_3AXIS help Say yes here to build support for STMicroelectronics accelerometers: LSM303DLH, LSM303DLHC, LIS3DH, LSM330D, LSM330DL, LSM330DLC, - LIS331DLH, LSM303DL, LSM303DLM, LSM330. + LIS331DLH, LSM303DL, LSM303DLM, LSM330, LIS2DH12. This driver can also be built as a module. If so, these modules will be created: @@ -107,6 +107,35 @@ config KXCJK1013 To compile this driver as a module, choose M here: the module will be called kxcjk-1013. +config MMA7455 + tristate + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + +config MMA7455_I2C + tristate "Freescale MMA7455L/MMA7456L Accelerometer I2C Driver" + depends on I2C + select MMA7455 + select REGMAP_I2C + help + Say yes here to build support for the Freescale MMA7455L and + MMA7456L 3-axis accelerometer. + + To compile this driver as a module, choose M here: the module + will be called mma7455_i2c. + +config MMA7455_SPI + tristate "Freescale MMA7455L/MMA7456L Accelerometer SPI Driver" + depends on SPI_MASTER + select MMA7455 + select REGMAP_SPI + help + Say yes here to build support for the Freescale MMA7455L and + MMA7456L 3-axis accelerometer. + + To compile this driver as a module, choose M here: the module + will be called mma7455_spi. + config MMA8452 tristate "Freescale MMA8452Q and similar Accelerometers Driver" depends on I2C @@ -158,6 +187,17 @@ config MXC4005 To compile this driver as a module, choose M. The module will be called mxc4005. +config MXC6255 + tristate "Memsic MXC6255 Orientation Sensing Accelerometer Driver" + depends on I2C + select REGMAP_I2C + help + Say yes here to build support for the Memsic MXC6255 Orientation + Sensing Accelerometer Driver. + + To compile this driver as a module, choose M here: the module will be + called mxc6255. + config STK8312 tristate "Sensortek STK8312 3-Axis Accelerometer Driver" depends on I2C diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile index 7925f166e6e9..71b6794de885 100644 --- a/drivers/iio/accel/Makefile +++ b/drivers/iio/accel/Makefile @@ -10,6 +10,11 @@ obj-$(CONFIG_BMC150_ACCEL_SPI) += bmc150-accel-spi.o obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o obj-$(CONFIG_KXCJK1013) += kxcjk-1013.o obj-$(CONFIG_KXSD9) += kxsd9.o + +obj-$(CONFIG_MMA7455) += mma7455_core.o +obj-$(CONFIG_MMA7455_I2C) += mma7455_i2c.o +obj-$(CONFIG_MMA7455_SPI) += mma7455_spi.o + obj-$(CONFIG_MMA8452) += mma8452.o obj-$(CONFIG_MMA9551_CORE) += mma9551_core.o @@ -17,6 +22,7 @@ obj-$(CONFIG_MMA9551) += mma9551.o obj-$(CONFIG_MMA9553) += mma9553.o obj-$(CONFIG_MXC4005) += mxc4005.o +obj-$(CONFIG_MXC6255) += mxc6255.o obj-$(CONFIG_STK8312) += stk8312.o obj-$(CONFIG_STK8BA50) += stk8ba50.o diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c index 2d33f1e821db..c73331f7782b 100644 --- a/drivers/iio/accel/bmc150-accel-core.c +++ b/drivers/iio/accel/bmc150-accel-core.c @@ -1623,24 +1623,22 @@ int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq, } } - ret = iio_device_register(indio_dev); - if (ret < 0) { - dev_err(dev, "Unable to register iio device\n"); - goto err_trigger_unregister; - } - ret = pm_runtime_set_active(dev); if (ret) - goto err_iio_unregister; + goto err_trigger_unregister; pm_runtime_enable(dev); pm_runtime_set_autosuspend_delay(dev, BMC150_AUTO_SUSPEND_DELAY_MS); pm_runtime_use_autosuspend(dev); + ret = iio_device_register(indio_dev); + if (ret < 0) { + dev_err(dev, "Unable to register iio device\n"); + goto err_trigger_unregister; + } + return 0; -err_iio_unregister: - iio_device_unregister(indio_dev); err_trigger_unregister: bmc150_accel_unregister_triggers(data, BMC150_ACCEL_TRIGGERS - 1); err_buffer_cleanup: @@ -1655,12 +1653,12 @@ int bmc150_accel_core_remove(struct device *dev) struct iio_dev *indio_dev = dev_get_drvdata(dev); struct bmc150_accel_data *data = iio_priv(indio_dev); + iio_device_unregister(indio_dev); + pm_runtime_disable(data->dev); pm_runtime_set_suspended(data->dev); pm_runtime_put_noidle(data->dev); - iio_device_unregister(indio_dev); - bmc150_accel_unregister_triggers(data, BMC150_ACCEL_TRIGGERS - 1); iio_triggered_buffer_cleanup(indio_dev); diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c index 18c1b06684c1..edec1d099e91 100644 --- a/drivers/iio/accel/kxcjk-1013.c +++ b/drivers/iio/accel/kxcjk-1013.c @@ -1264,25 +1264,23 @@ static int kxcjk1013_probe(struct i2c_client *client, goto err_trigger_unregister; } - ret = iio_device_register(indio_dev); - if (ret < 0) { - dev_err(&client->dev, "unable to register iio device\n"); - goto err_buffer_cleanup; - } - ret = pm_runtime_set_active(&client->dev); if (ret) - goto err_iio_unregister; + goto err_buffer_cleanup; pm_runtime_enable(&client->dev); pm_runtime_set_autosuspend_delay(&client->dev, KXCJK1013_SLEEP_DELAY_MS); pm_runtime_use_autosuspend(&client->dev); + ret = iio_device_register(indio_dev); + if (ret < 0) { + dev_err(&client->dev, "unable to register iio device\n"); + goto err_buffer_cleanup; + } + return 0; -err_iio_unregister: - iio_device_unregister(indio_dev); err_buffer_cleanup: if (data->dready_trig) iio_triggered_buffer_cleanup(indio_dev); @@ -1302,12 +1300,12 @@ static int kxcjk1013_remove(struct i2c_client *client) struct iio_dev *indio_dev = i2c_get_clientdata(client); struct kxcjk1013_data *data = 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); - iio_device_unregister(indio_dev); - if (data->dready_trig) { iio_triggered_buffer_cleanup(indio_dev); iio_trigger_unregister(data->dready_trig); diff --git a/drivers/iio/accel/mma7455.h b/drivers/iio/accel/mma7455.h new file mode 100644 index 000000000000..2b1152c53d4f --- /dev/null +++ b/drivers/iio/accel/mma7455.h @@ -0,0 +1,19 @@ +/* + * IIO accel driver for Freescale MMA7455L 3-axis 10-bit accelerometer + * Copyright 2015 Joachim Eastwood <manabian@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __MMA7455_H +#define __MMA7455_H + +extern const struct regmap_config mma7455_core_regmap; + +int mma7455_core_probe(struct device *dev, struct regmap *regmap, + const char *name); +int mma7455_core_remove(struct device *dev); + +#endif diff --git a/drivers/iio/accel/mma7455_core.c b/drivers/iio/accel/mma7455_core.c new file mode 100644 index 000000000000..c633cc2c0789 --- /dev/null +++ b/drivers/iio/accel/mma7455_core.c @@ -0,0 +1,311 @@ +/* + * IIO accel core driver for Freescale MMA7455L 3-axis 10-bit accelerometer + * Copyright 2015 Joachim Eastwood <manabian@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * UNSUPPORTED hardware features: + * - 8-bit mode with different scales + * - INT1/INT2 interrupts + * - Offset calibration + * - Events + */ + +#include <linux/delay.h> +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> +#include <linux/iio/buffer.h> +#include <linux/iio/trigger.h> +#include <linux/iio/trigger_consumer.h> +#include <linux/iio/triggered_buffer.h> +#include <linux/module.h> +#include <linux/regmap.h> + +#include "mma7455.h" + +#define MMA7455_REG_XOUTL 0x00 +#define MMA7455_REG_XOUTH 0x01 +#define MMA7455_REG_YOUTL 0x02 +#define MMA7455_REG_YOUTH 0x03 +#define MMA7455_REG_ZOUTL 0x04 +#define MMA7455_REG_ZOUTH 0x05 +#define MMA7455_REG_STATUS 0x09 +#define MMA7455_STATUS_DRDY BIT(0) +#define MMA7455_REG_WHOAMI 0x0f +#define MMA7455_WHOAMI_ID 0x55 +#define MMA7455_REG_MCTL 0x16 +#define MMA7455_MCTL_MODE_STANDBY 0x00 +#define MMA7455_MCTL_MODE_MEASURE 0x01 +#define MMA7455_REG_CTL1 0x18 +#define MMA7455_CTL1_DFBW_MASK BIT(7) +#define MMA7455_CTL1_DFBW_125HZ BIT(7) +#define MMA7455_CTL1_DFBW_62_5HZ 0 +#define MMA7455_REG_TW 0x1e + +/* + * When MMA7455 is used in 10-bit it has a fullscale of -8g + * corresponding to raw value -512. The userspace interface + * uses m/s^2 and we declare micro units. + * So scale factor is given by: + * g * 8 * 1e6 / 512 = 153228.90625, with g = 9.80665 + */ +#define MMA7455_10BIT_SCALE 153229 + +struct mma7455_data { + struct regmap *regmap; + struct device *dev; +}; + +static int mma7455_drdy(struct mma7455_data *mma7455) +{ + unsigned int reg; + int tries = 3; + int ret; + + while (tries-- > 0) { + ret = regmap_read(mma7455->regmap, MMA7455_REG_STATUS, ®); + if (ret) + return ret; + + if (reg & MMA7455_STATUS_DRDY) + return 0; + + msleep(20); + } + + dev_warn(mma7455->dev, "data not ready\n"); + + return -EIO; +} + +static irqreturn_t mma7455_trigger_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + struct mma7455_data *mma7455 = iio_priv(indio_dev); + u8 buf[16]; /* 3 x 16-bit channels + padding + ts */ + int ret; + + ret = mma7455_drdy(mma7455); + if (ret) + goto done; + + ret = regmap_bulk_read(mma7455->regmap, MMA7455_REG_XOUTL, buf, + sizeof(__le16) * 3); + if (ret) + goto done; + + 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 mma7455_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct mma7455_data *mma7455 = iio_priv(indio_dev); + unsigned int reg; + __le16 data; + int ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + if (iio_buffer_enabled(indio_dev)) + return -EBUSY; + + ret = mma7455_drdy(mma7455); + if (ret) + return ret; + + ret = regmap_bulk_read(mma7455->regmap, chan->address, &data, + sizeof(data)); + if (ret) + return ret; + + *val = sign_extend32(le16_to_cpu(data), 9); + + return IIO_VAL_INT; + + case IIO_CHAN_INFO_SCALE: + *val = 0; + *val2 = MMA7455_10BIT_SCALE; + + return IIO_VAL_INT_PLUS_MICRO; + + case IIO_CHAN_INFO_SAMP_FREQ: + ret = regmap_read(mma7455->regmap, MMA7455_REG_CTL1, ®); + if (ret) + return ret; + + if (reg & MMA7455_CTL1_DFBW_MASK) + *val = 250; + else + *val = 125; + + return IIO_VAL_INT; + } + + return -EINVAL; +} + +static int mma7455_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct mma7455_data *mma7455 = iio_priv(indio_dev); + int i; + + switch (mask) { + case IIO_CHAN_INFO_SAMP_FREQ: + if (val == 250 && val2 == 0) + i = MMA7455_CTL1_DFBW_125HZ; + else if (val == 125 && val2 == 0) + i = MMA7455_CTL1_DFBW_62_5HZ; + else + return -EINVAL; + + return regmap_update_bits(mma7455->regmap, MMA7455_REG_CTL1, + MMA7455_CTL1_DFBW_MASK, i); + + case IIO_CHAN_INFO_SCALE: + /* In 10-bit mode there is only one scale available */ + if (val == 0 && val2 == MMA7455_10BIT_SCALE) + return 0; + break; + } + + return -EINVAL; +} + +static IIO_CONST_ATTR(sampling_frequency_available, "125 250"); + +static struct attribute *mma7455_attributes[] = { + &iio_const_attr_sampling_frequency_available.dev_attr.attr, + NULL +}; + +static const struct attribute_group mma7455_group = { + .attrs = mma7455_attributes, +}; + +static const struct iio_info mma7455_info = { + .attrs = &mma7455_group, + .read_raw = mma7455_read_raw, + .write_raw = mma7455_write_raw, + .driver_module = THIS_MODULE, +}; + +#define MMA7455_CHANNEL(axis, idx) { \ + .type = IIO_ACCEL, \ + .modified = 1, \ + .address = MMA7455_REG_##axis##OUTL,\ + .channel2 = IIO_MOD_##axis, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ) | \ + BIT(IIO_CHAN_INFO_SCALE), \ + .scan_index = idx, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 10, \ + .storagebits = 16, \ + .endianness = IIO_LE, \ + }, \ +} + +static const struct iio_chan_spec mma7455_channels[] = { + MMA7455_CHANNEL(X, 0), + MMA7455_CHANNEL(Y, 1), + MMA7455_CHANNEL(Z, 2), + IIO_CHAN_SOFT_TIMESTAMP(3), +}; + +static const unsigned long mma7455_scan_masks[] = {0x7, 0}; + +const struct regmap_config mma7455_core_regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = MMA7455_REG_TW, +}; +EXPORT_SYMBOL_GPL(mma7455_core_regmap); + +int mma7455_core_probe(struct device *dev, struct regmap *regmap, + const char *name) +{ + struct mma7455_data *mma7455; + struct iio_dev *indio_dev; + unsigned int reg; + int ret; + + ret = regmap_read(regmap, MMA7455_REG_WHOAMI, ®); + if (ret) { + dev_err(dev, "unable to read reg\n"); + return ret; + } + + if (reg != MMA7455_WHOAMI_ID) { + dev_err(dev, "device id mismatch\n"); + return -ENODEV; + } + + indio_dev = devm_iio_device_alloc(dev, sizeof(*mma7455)); + if (!indio_dev) + return -ENOMEM; + + dev_set_drvdata(dev, indio_dev); + mma7455 = iio_priv(indio_dev); + mma7455->regmap = regmap; + mma7455->dev = dev; + + indio_dev->info = &mma7455_info; + indio_dev->name = name; + indio_dev->dev.parent = dev; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = mma7455_channels; + indio_dev->num_channels = ARRAY_SIZE(mma7455_channels); + indio_dev->available_scan_masks = mma7455_scan_masks; + + regmap_write(mma7455->regmap, MMA7455_REG_MCTL, + MMA7455_MCTL_MODE_MEASURE); + + ret = iio_triggered_buffer_setup(indio_dev, NULL, + mma7455_trigger_handler, NULL); + if (ret) { + dev_err(dev, "unable to setup triggered buffer\n"); + return ret; + } + + ret = iio_device_register(indio_dev); + if (ret) { + dev_err(dev, "unable to register device\n"); + iio_triggered_buffer_cleanup(indio_dev); + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(mma7455_core_probe); + +int mma7455_core_remove(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct mma7455_data *mma7455 = iio_priv(indio_dev); + + iio_device_unregister(indio_dev); + iio_triggered_buffer_cleanup(indio_dev); + + regmap_write(mma7455->regmap, MMA7455_REG_MCTL, + MMA7455_MCTL_MODE_STANDBY); + + return 0; +} +EXPORT_SYMBOL_GPL(mma7455_core_remove); + +MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>"); +MODULE_DESCRIPTION("Freescale MMA7455L core accelerometer driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/accel/mma7455_i2c.c b/drivers/iio/accel/mma7455_i2c.c new file mode 100644 index 000000000000..3cab5fb4a3c4 --- /dev/null +++ b/drivers/iio/accel/mma7455_i2c.c @@ -0,0 +1,56 @@ +/* + * IIO accel I2C driver for Freescale MMA7455L 3-axis 10-bit accelerometer + * Copyright 2015 Joachim Eastwood <manabian@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/regmap.h> + +#include "mma7455.h" + +static int mma7455_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct regmap *regmap; + const char *name = NULL; + + regmap = devm_regmap_init_i2c(i2c, &mma7455_core_regmap); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + if (id) + name = id->name; + + return mma7455_core_probe(&i2c->dev, regmap, name); +} + +static int mma7455_i2c_remove(struct i2c_client *i2c) +{ + return mma7455_core_remove(&i2c->dev); +} + +static const struct i2c_device_id mma7455_i2c_ids[] = { + { "mma7455", 0 }, + { "mma7456", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, mma7455_i2c_ids); + +static struct i2c_driver mma7455_i2c_driver = { + .probe = mma7455_i2c_probe, + .remove = mma7455_i2c_remove, + .id_table = mma7455_i2c_ids, + .driver = { + .name = "mma7455-i2c", + }, +}; +module_i2c_driver(mma7455_i2c_driver); + +MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>"); +MODULE_DESCRIPTION("Freescale MMA7455L I2C accelerometer driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/accel/mma7455_spi.c b/drivers/iio/accel/mma7455_spi.c new file mode 100644 index 000000000000..79df8f27cf99 --- /dev/null +++ b/drivers/iio/accel/mma7455_spi.c @@ -0,0 +1,52 @@ +/* + * IIO accel SPI driver for Freescale MMA7455L 3-axis 10-bit accelerometer + * Copyright 2015 Joachim Eastwood <manabian@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/spi/spi.h> + +#include "mma7455.h" + +static int mma7455_spi_probe(struct spi_device *spi) +{ + const struct spi_device_id *id = spi_get_device_id(spi); + struct regmap *regmap; + + regmap = devm_regmap_init_spi(spi, &mma7455_core_regmap); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + return mma7455_core_probe(&spi->dev, regmap, id->name); +} + +static int mma7455_spi_remove(struct spi_device *spi) +{ + return mma7455_core_remove(&spi->dev); +} + +static const struct spi_device_id mma7455_spi_ids[] = { + { "mma7455", 0 }, + { "mma7456", 0 }, + { } +}; +MODULE_DEVICE_TABLE(spi, mma7455_spi_ids); + +static struct spi_driver mma7455_spi_driver = { + .probe = mma7455_spi_probe, + .remove = mma7455_spi_remove, + .id_table = mma7455_spi_ids, + .driver = { + .name = "mma7455-spi", + }, +}; +module_spi_driver(mma7455_spi_driver); + +MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>"); +MODULE_DESCRIPTION("Freescale MMA7455L SPI accelerometer driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c index 1eccc2dcf14c..116a6e401a6a 100644 --- a/drivers/iio/accel/mma8452.c +++ b/drivers/iio/accel/mma8452.c @@ -29,6 +29,7 @@ #include <linux/iio/events.h> #include <linux/delay.h> #include <linux/of_device.h> +#include <linux/of_irq.h> #define MMA8452_STATUS 0x00 #define MMA8452_STATUS_DRDY (BIT(2) | BIT(1) | BIT(0)) @@ -1130,13 +1131,21 @@ static int mma8452_probe(struct i2c_client *client, MMA8452_INT_FF_MT; int enabled_interrupts = MMA8452_INT_TRANS | MMA8452_INT_FF_MT; + int irq2; - /* Assume wired to INT1 pin */ - ret = i2c_smbus_write_byte_data(client, - MMA8452_CTRL_REG5, - supported_interrupts); - if (ret < 0) - return ret; + irq2 = of_irq_get_byname(client->dev.of_node, "INT2"); + + if (irq2 == client->irq) { + dev_dbg(&client->dev, "using interrupt line INT2\n"); + } else { + ret = i2c_smbus_write_byte_data(client, |