On 12/03/2012 05:40 PM, Denis CIOCCA wrote:
> Hi Lars-Peter & Jonathan,
>
> in according to your previous emails, I have modified the accelerometers
> driver to support all the sensors without code repetition.
> In order to follow my company requests I need to submit at least the IIO
> accelerometers driver in next kernel release.
> I'll do my best to finalise enclosed solution on time for next release,
> otherwise I have to submit Accelometer driver first and then patch it
> for gyroscope and magnetometer.
> Thanks for your feedback.
>
> Denis
>
>
Hi,
I haven't looked at the patch yet, will do that tomorrow, but there is still
the formating issue that all tabs have been replaced with spaces, etc.
- Lars
>
> From 5b63bcd8934ab3b18edf71c71e7671a70922f043 Mon Sep 17 00:00:00 2001
> From: Denis Ciocca <denis.ciocca@xxxxxx>
> Date: Tue, 27 Nov 2012 16:20:40 +0100
> Subject: [PATCH] iio:common: Add STMicroelectronics common driver
>
> This patch adds generic common code driver for STMicroelectronics
> accelerometers, gyroscopes, currently it supports:
> LSM303DLH, LSM303DLHC, LIS3DH, LIS331DLH, LSM303DL, LSM303DLM,
> L3G4200D, LSM330DL, L3GD20, L3GD20H, LSM330D, LSM330DLC, LSM9DS0,
> L3G4IS, LSM330
> ---
> Documentation/ABI/testing/sysfs-bus-iio-accel-st | 7 +
> Documentation/ABI/testing/sysfs-bus-iio-gyro-st | 7 +
> drivers/iio/accel/Kconfig | 14 +
> drivers/iio/accel/Makefile | 1 +
> drivers/iio/accel/st_accel.c | 493 ++++++++++++++++
> drivers/iio/common/Kconfig | 1 +
> drivers/iio/common/Makefile | 1 +
> drivers/iio/common/st-sensors/Kconfig | 17 +
> drivers/iio/common/st-sensors/Makefile | 6 +
> drivers/iio/common/st-sensors/st_sensors.h | 259 +++++++++
> drivers/iio/common/st-sensors/st_sensors_buffer.c | 178 ++++++
> drivers/iio/common/st-sensors/st_sensors_core.c | 589
> ++++++++++++++++++++
> drivers/iio/common/st-sensors/st_sensors_i2c.c | 137 +++++
> drivers/iio/common/st-sensors/st_sensors_spi.c | 183 ++++++
> drivers/iio/common/st-sensors/st_sensors_trigger.c | 83 +++
> drivers/iio/gyro/Kconfig | 14 +
> drivers/iio/gyro/Makefile | 1 +
> drivers/iio/gyro/st_gyro.c | 252 +++++++++
> 18 files changed, 2243 insertions(+), 0 deletions(-)
> create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-accel-st
> create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-gyro-st
> create mode 100644 drivers/iio/accel/st_accel.c
> create mode 100644 drivers/iio/common/st-sensors/Kconfig
> create mode 100644 drivers/iio/common/st-sensors/Makefile
> create mode 100644 drivers/iio/common/st-sensors/st_sensors.h
> create mode 100644 drivers/iio/common/st-sensors/st_sensors_buffer.c
> create mode 100644 drivers/iio/common/st-sensors/st_sensors_core.c
> create mode 100644 drivers/iio/common/st-sensors/st_sensors_i2c.c
> create mode 100644 drivers/iio/common/st-sensors/st_sensors_spi.c
> create mode 100644 drivers/iio/common/st-sensors/st_sensors_trigger.c
> create mode 100644 drivers/iio/gyro/st_gyro.c
>
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio-accel-st
> b/Documentation/ABI/testing/sysfs-bus-iio-accel-st
> new file mode 100644
> index 0000000..f426c02
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-bus-iio-accel-st
> @@ -0,0 +1,7 @@
> +What: /sys/bus/iio/devices/iio:deviceX/powerdown
> +KernelVersion: 3.7.0
> +Contact: linux-iio@xxxxxxxxxxxxxxx
> +Description:
> + Reading returns either '1' or '0'.
> + '1' means that the device in question is off.
> + '0' means that the devices in question is on.
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio-gyro-st
> b/Documentation/ABI/testing/sysfs-bus-iio-gyro-st
> new file mode 100644
> index 0000000..f426c02
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-bus-iio-gyro-st
> @@ -0,0 +1,7 @@
> +What: /sys/bus/iio/devices/iio:deviceX/powerdown
> +KernelVersion: 3.7.0
> +Contact: linux-iio@xxxxxxxxxxxxxxx
> +Description:
> + Reading returns either '1' or '0'.
> + '1' means that the device in question is off.
> + '0' means that the devices in question is on.
> diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
> index b2510c4..6e8a955 100644
> --- a/drivers/iio/accel/Kconfig
> +++ b/drivers/iio/accel/Kconfig
> @@ -13,4 +13,18 @@ config HID_SENSOR_ACCEL_3D
> Say yes here to build support for the HID SENSOR
> accelerometers 3D.
>
> +config ST_ACCEL_3D
> + tristate "STMicroelectronics accelerometers 3-Axis Driver"
> + depends on (I2C || SPI_MASTER) && SYSFS
> + select IIO_BUFFER
> + select IIO_TRIGGERED_BUFFER
> + select ST_SENSORS_IIO_COMMON
> + help
> + Say yes here to build support for STMicroelectronics accelerometers:
> + LSM303DLH, LSM303DLHC, LIS3DH, LSM330D, LSM330DL, LSM330DLC, LSM303D,
> + LSM9DS0, LIS331DLH, LSM303DL, LSM303DLM, LSM330.
> +
> + This driver can also be built as a module. If so, the module
> + will be called st_accel.
> +
> endmenu
> diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile
> index 5bc6855..d3ce19a 100644
> --- a/drivers/iio/accel/Makefile
> +++ b/drivers/iio/accel/Makefile
> @@ -3,3 +3,4 @@
> #
>
> obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o
> +obj-$(CONFIG_ST_ACCEL_3D) += st_accel.o
> diff --git a/drivers/iio/accel/st_accel.c b/drivers/iio/accel/st_accel.c
> new file mode 100644
> index 0000000..02c9ff8
> --- /dev/null
> +++ b/drivers/iio/accel/st_accel.c
> @@ -0,0 +1,493 @@
> +/*
> + * STMicroelectronics accelerometers driver
> + *
> + * Copyright 2012 STMicroelectronics Inc.
> + *
> + * Denis Ciocca <denis.ciocca@xxxxxx>
> + *
> + * Licensed under the GPL-2.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/slab.h>
> +#include <linux/errno.h>
> +#include <linux/types.h>
> +#include <linux/mutex.h>
> +#include <linux/interrupt.h>
> +#include <linux/i2c.h>
> +#include <linux/gpio.h>
> +#include <linux/irq.h>
> +#include <linux/iio/iio.h>
> +#include <linux/iio/sysfs.h>
> +#include <linux/iio/trigger_consumer.h>
> +#include <linux/iio/buffer.h>
> +
> +#include "../common/st-sensors/st_sensors.h"
> +
> +
> +/* FULLSCALE */
> +#define ST_ACCEL_FS_AVL_2G 2
> +#define ST_ACCEL_FS_AVL_4G 4
> +#define ST_ACCEL_FS_AVL_6G 6
> +#define ST_ACCEL_FS_AVL_8G 8
> +#define ST_ACCEL_FS_AVL_16G 16
> +
> +/* CUSTOM VALUES FOR SENSOR 1 */
> +#define ST_ACCEL_1_WAI_EXP 0x33
> +#define ST_ACCEL_1_ODR_ADDR 0x20
> +#define ST_ACCEL_1_ODR_MASK 0xf0
> +#define ST_ACCEL_1_ODR_N_BIT 4
> +#define ST_ACCEL_1_ODR_AVL_1HZ_VAL 0x01
> +#define ST_ACCEL_1_ODR_AVL_10HZ_VAL 0x02
> +#define ST_ACCEL_1_ODR_AVL_25HZ_VAL 0x03
> +#define ST_ACCEL_1_ODR_AVL_50HZ_VAL 0x04
> +#define ST_ACCEL_1_ODR_AVL_100HZ_VAL 0x05
> +#define ST_ACCEL_1_ODR_AVL_200HZ_VAL 0x06
> +#define ST_ACCEL_1_ODR_AVL_400HZ_VAL 0x07
> +#define ST_ACCEL_1_ODR_AVL_1600HZ_VAL 0x08
> +#define ST_ACCEL_1_FS_N_BIT 2
> +#define ST_ACCEL_1_FS_ADDR 0x23
> +#define ST_ACCEL_1_FS_MASK 0x30
> +#define ST_ACCEL_1_FS_AVL_2_VAL 0x00
> +#define ST_ACCEL_1_FS_AVL_4_VAL 0x01
> +#define ST_ACCEL_1_FS_AVL_8_VAL 0x02
> +#define ST_ACCEL_1_FS_AVL_16_VAL 0x03
> +#define ST_ACCEL_1_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000)
> +#define ST_ACCEL_1_FS_AVL_4_GAIN IIO_G_TO_M_S_2(2000)
> +#define ST_ACCEL_1_FS_AVL_8_GAIN IIO_G_TO_M_S_2(4000)
> +#define ST_ACCEL_1_FS_AVL_16_GAIN IIO_G_TO_M_S_2(12000)
> +#define ST_ACCEL_1_BDU_ADDR 0x23
> +#define ST_ACCEL_1_BDU_MASK 0x80
> +#define ST_ACCEL_1_DRDY_IRQ_ADDR 0x22
> +#define ST_ACCEL_1_DRDY_IRQ_MASK 0x10
> +#define ST_ACCEL_1_MULTIREAD_BIT true
> +
> +/* CUSTOM VALUES FOR SENSOR 2 */
> +#define ST_ACCEL_2_WAI_EXP 0x49
> +#define ST_ACCEL_2_ODR_ADDR 0x20
> +#define ST_ACCEL_2_ODR_MASK 0xf0
> +#define ST_ACCEL_2_ODR_N_BIT 4
> +#define ST_ACCEL_2_ODR_AVL_3HZ_VAL 0x01
> +#define ST_ACCEL_2_ODR_AVL_6HZ_VAL 0x02
> +#define ST_ACCEL_2_ODR_AVL_12HZ_VAL 0x03
> +#define ST_ACCEL_2_ODR_AVL_25HZ_VAL 0x04
> +#define ST_ACCEL_2_ODR_AVL_50HZ_VAL 0x05
> +#define ST_ACCEL_2_ODR_AVL_100HZ_VAL 0x06
> +#define ST_ACCEL_2_ODR_AVL_200HZ_VAL 0x07
> +#define ST_ACCEL_2_ODR_AVL_400HZ_VAL 0x08
> +#define ST_ACCEL_2_ODR_AVL_800HZ_VAL 0x09
> +#define ST_ACCEL_2_ODR_AVL_1600HZ_VAL 0x0a
> +#define ST_ACCEL_2_FS_N_BIT 3
> +#define ST_ACCEL_2_FS_ADDR 0x21
> +#define ST_ACCEL_2_FS_MASK 0x38
> +#define ST_ACCEL_2_FS_AVL_2_VAL 0X00
> +#define ST_ACCEL_2_FS_AVL_4_VAL 0X01
> +#define ST_ACCEL_2_FS_AVL_6_VAL 0x02
> +#define ST_ACCEL_2_FS_AVL_8_VAL 0x03
> +#define ST_ACCEL_2_FS_AVL_16_VAL 0x04
> +#define ST_ACCEL_2_FS_AVL_2_GAIN IIO_G_TO_M_S_2(61)
> +#define ST_ACCEL_2_FS_AVL_4_GAIN IIO_G_TO_M_S_2(122)
> +#define ST_ACCEL_2_FS_AVL_6_GAIN IIO_G_TO_M_S_2(183)
> +#define ST_ACCEL_2_FS_AVL_8_GAIN IIO_G_TO_M_S_2(244)
> +#define ST_ACCEL_2_FS_AVL_16_GAIN IIO_G_TO_M_S_2(732)
> +#define ST_ACCEL_2_BDU_ADDR 0x20
> +#define ST_ACCEL_2_BDU_MASK 0x08
> +#define ST_ACCEL_2_DRDY_IRQ_ADDR 0x22
> +#define ST_ACCEL_2_DRDY_IRQ_MASK 0x04
> +#define ST_ACCEL_2_MULTIREAD_BIT true
> +
> +/* CUSTOM VALUES FOR SENSOR 3 */
> +#define ST_ACCEL_3_WAI_EXP 0x32
> +#define ST_ACCEL_3_ODR_ADDR 0x20
> +#define ST_ACCEL_3_ODR_MASK 0x18
> +#define ST_ACCEL_3_ODR_N_BIT 2
> +#define ST_ACCEL_3_ODR_AVL_50HZ_VAL 0x00
> +#define ST_ACCEL_3_ODR_AVL_100HZ_VAL 0x01
> +#define ST_ACCEL_3_ODR_AVL_400HZ_VAL 0x02
> +#define ST_ACCEL_3_ODR_AVL_1000HZ_VAL 0x03
> +#define ST_ACCEL_3_PW_ADDR 0x20
> +#define ST_ACCEL_3_PW_MASK 0xe0
> +#define ST_ACCEL_3_PW_N_BIT 3
> +#define ST_ACCEL_3_FS_N_BIT 2
> +#define ST_ACCEL_3_FS_ADDR 0x23
> +#define ST_ACCEL_3_FS_MASK 0x30
> +#define ST_ACCEL_3_FS_AVL_2_VAL 0X00
> +#define ST_ACCEL_3_FS_AVL_4_VAL 0X01
> +#define ST_ACCEL_3_FS_AVL_8_VAL 0x03
> +#define ST_ACCEL_3_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000)
> +#define ST_ACCEL_3_FS_AVL_4_GAIN IIO_G_TO_M_S_2(2000)
> +#define ST_ACCEL_3_FS_AVL_8_GAIN IIO_G_TO_M_S_2(3900)
> +#define ST_ACCEL_3_BDU_ADDR 0x23
> +#define ST_ACCEL_3_BDU_MASK 0x80
> +#define ST_ACCEL_3_DRDY_IRQ_ADDR 0x22
> +#define ST_ACCEL_3_DRDY_IRQ_MASK 0x02
> +#define ST_ACCEL_3_MULTIREAD_BIT true
> +
> +/* CUSTOM VALUES FOR SENSOR 4 */
> +#define ST_ACCEL_4_WAI_EXP 0x40
> +#define ST_ACCEL_4_ODR_ADDR 0x20
> +#define ST_ACCEL_4_ODR_MASK 0xf0
> +#define ST_ACCEL_4_ODR_N_BIT 4
> +#define ST_ACCEL_4_ODR_AVL_3HZ_VAL 0x01
> +#define ST_ACCEL_4_ODR_AVL_6HZ_VAL 0x02
> +#define ST_ACCEL_4_ODR_AVL_12HZ_VAL 0x03
> +#define ST_ACCEL_4_ODR_AVL_25HZ_VAL 0x04
> +#define ST_ACCEL_4_ODR_AVL_50HZ_VAL 0x05
> +#define ST_ACCEL_4_ODR_AVL_100HZ_VAL 0x06
> +#define ST_ACCEL_4_ODR_AVL_200HZ_VAL 0x07
> +#define ST_ACCEL_4_ODR_AVL_400HZ_VAL 0x08
> +#define ST_ACCEL_4_ODR_AVL_800HZ_VAL 0x09
> +#define ST_ACCEL_4_ODR_AVL_1600HZ_VAL 0x0a
> +#define ST_ACCEL_4_FS_N_BIT 3
> +#define ST_ACCEL_4_FS_ADDR 0x24
> +#define ST_ACCEL_4_FS_MASK 0x38
> +#define ST_ACCEL_4_FS_AVL_2_VAL 0X00
> +#define ST_ACCEL_4_FS_AVL_4_VAL 0X01
> +#define ST_ACCEL_4_FS_AVL_6_VAL 0x02
> +#define ST_ACCEL_4_FS_AVL_8_VAL 0x03
> +#define ST_ACCEL_4_FS_AVL_16_VAL 0x04
> +#define ST_ACCEL_4_FS_AVL_2_GAIN IIO_G_TO_M_S_2(61)
> +#define ST_ACCEL_4_FS_AVL_4_GAIN IIO_G_TO_M_S_2(122)
> +#define ST_ACCEL_4_FS_AVL_6_GAIN IIO_G_TO_M_S_2(183)
> +#define ST_ACCEL_4_FS_AVL_8_GAIN IIO_G_TO_M_S_2(244)
> +#define ST_ACCEL_4_FS_AVL_16_GAIN IIO_G_TO_M_S_2(732)
> +#define ST_ACCEL_4_BDU_ADDR 0x20
> +#define ST_ACCEL_4_BDU_MASK 0x08
> +#define ST_ACCEL_4_DRDY_IRQ_ADDR 0x23
> +#define ST_ACCEL_4_DRDY_IRQ_MASK 0x80
> +#define ST_ACCEL_4_IG1_EN_ADDR 0x23
> +#define ST_ACCEL_4_IG1_EN_MASK 0x08
> +#define ST_ACCEL_4_MULTIREAD_BIT false
> +
> +const struct iio_chan_spec st_accel_12bit_channels[] = {
> + ST_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_X, IIO_MOD_X, IIO_LE,
> + ST_SENSORS_DEF_12_REALBITS, ST_SENSORS_DEF_OUT_X_L_ADDR),
> + ST_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_Y, IIO_MOD_Y, IIO_LE,
> + ST_SENSORS_DEF_12_REALBITS, ST_SENSORS_DEF_OUT_Y_L_ADDR),
> + ST_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_Z, IIO_MOD_Z, IIO_LE,
> + ST_SENSORS_DEF_12_REALBITS, ST_SENSORS_DEF_OUT_Z_L_ADDR),
> + IIO_CHAN_SOFT_TIMESTAMP(3)
> +};
> +
> +const struct iio_chan_spec st_accel_16bit_channels[] = {
> + ST_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_X, IIO_MOD_X, IIO_LE,
> + ST_SENSORS_DEF_16_REALBITS, ST_SENSORS_DEF_OUT_X_L_ADDR),
> + ST_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_Y, IIO_MOD_Y, IIO_LE,
> + ST_SENSORS_DEF_16_REALBITS, ST_SENSORS_DEF_OUT_Y_L_ADDR),
> + ST_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_Z, IIO_MOD_Z, IIO_LE,
> + ST_SENSORS_DEF_16_REALBITS, ST_SENSORS_DEF_OUT_Z_L_ADDR),
> + IIO_CHAN_SOFT_TIMESTAMP(3)
> +};
> +
> +const struct st_sensors st_accel_sensors[] = {
> + {
> + .wai = ST_ACCEL_1_WAI_EXP,
> + .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
> + .odr = {
> + .addr = ST_ACCEL_1_ODR_ADDR,
> + .mask = ST_ACCEL_1_ODR_MASK,
> + .num_bit = ST_ACCEL_1_ODR_N_BIT,
> + .odr_avl = {
> + { 1, ST_ACCEL_1_ODR_AVL_1HZ_VAL, },
> + { 10, ST_ACCEL_1_ODR_AVL_10HZ_VAL, },
> + { 25, ST_ACCEL_1_ODR_AVL_25HZ_VAL, },
> + { 50, ST_ACCEL_1_ODR_AVL_50HZ_VAL, },
> + { 100, ST_ACCEL_1_ODR_AVL_100HZ_VAL, },
> + { 200, ST_ACCEL_1_ODR_AVL_200HZ_VAL, },
> + { 400, ST_ACCEL_1_ODR_AVL_400HZ_VAL, },
> + { 1600, ST_ACCEL_1_ODR_AVL_1600HZ_VAL, },
> + },
> + },
> + .pw = {
> + .addr = ST_ACCEL_1_ODR_ADDR,
> + .mask = ST_ACCEL_1_ODR_MASK,
> + .num_bit = ST_ACCEL_1_ODR_N_BIT,
> + .value_off = ST_SENSORS_DEF_POWER_OFF_VALUE,
> + },
> + .enable_axis = {
> + .addr = ST_SENSORS_DEF_AXIS_ADDR,
> + .mask = ST_SENSORS_DEF_AXIS_MASK,
> + },
> + .fs = {
> + .addr = ST_ACCEL_1_FS_ADDR,
> + .mask = ST_ACCEL_1_FS_MASK,
> + .num_bit = ST_ACCEL_1_FS_N_BIT,
> + .fs_avl = {
> + [0] = {
> + .num = ST_ACCEL_FS_AVL_2G,
> + .value = ST_ACCEL_1_FS_AVL_2_VAL,
> + .gain = ST_ACCEL_1_FS_AVL_2_GAIN,
> + },
> + [1] = {
> + .num = ST_ACCEL_FS_AVL_4G,
> + .value = ST_ACCEL_1_FS_AVL_4_VAL,
> + .gain = ST_ACCEL_1_FS_AVL_4_GAIN,
> + },
> + [2] = {
> + .num = ST_ACCEL_FS_AVL_8G,
> + .value = ST_ACCEL_1_FS_AVL_8_VAL,
> + .gain = ST_ACCEL_1_FS_AVL_8_GAIN,
> + },
> + [3] = {
> + .num = ST_ACCEL_FS_AVL_16G,
> + .value = ST_ACCEL_1_FS_AVL_16_VAL,
> + .gain = ST_ACCEL_1_FS_AVL_16_GAIN,
> + },
> + },
> + },
> + .bdu = {
> + .addr = ST_ACCEL_1_BDU_ADDR,
> + .mask = ST_ACCEL_1_BDU_MASK,
> + },
> + .drdy_irq = {
> + .addr = ST_ACCEL_1_DRDY_IRQ_ADDR,
> + .mask = ST_ACCEL_1_DRDY_IRQ_MASK,
> + },
> + .multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT,
> + },
> + {
> + .wai = ST_ACCEL_2_WAI_EXP,
> + .ch = (struct iio_chan_spec *)st_accel_16bit_channels,
> + .odr = {
> + .addr = ST_ACCEL_2_ODR_ADDR,
> + .mask = ST_ACCEL_2_ODR_MASK,
> + .num_bit = ST_ACCEL_2_ODR_N_BIT,
> + .odr_avl = {
> + { 3, ST_ACCEL_2_ODR_AVL_3HZ_VAL, },
> + { 6, ST_ACCEL_2_ODR_AVL_6HZ_VAL, },
> + { 12, ST_ACCEL_2_ODR_AVL_12HZ_VAL, },
> + { 25, ST_ACCEL_2_ODR_AVL_25HZ_VAL, },
> + { 50, ST_ACCEL_2_ODR_AVL_50HZ_VAL, },
> + { 100, ST_ACCEL_2_ODR_AVL_100HZ_VAL, },
> + { 200, ST_ACCEL_2_ODR_AVL_200HZ_VAL, },
> + { 400, ST_ACCEL_2_ODR_AVL_400HZ_VAL, },
> + { 800, ST_ACCEL_2_ODR_AVL_800HZ_VAL, },
> + { 1600, ST_ACCEL_2_ODR_AVL_1600HZ_VAL, },
> + },
> + },
> + .pw = {
> + .addr = ST_ACCEL_2_ODR_ADDR,
> + .mask = ST_ACCEL_2_ODR_MASK,
> + .num_bit = ST_ACCEL_2_ODR_N_BIT,
> + .value_off = ST_SENSORS_DEF_POWER_OFF_VALUE,
> + },
> + .enable_axis = {
> + .addr = ST_SENSORS_DEF_AXIS_ADDR,
> + .mask = ST_SENSORS_DEF_AXIS_MASK,
> + },
> + .fs = {
> + .addr = ST_ACCEL_2_FS_ADDR,
> + .mask = ST_ACCEL_2_FS_MASK,
> + .num_bit = ST_ACCEL_2_FS_N_BIT,
> + .fs_avl = {
> + [0] = {
> + .num = ST_ACCEL_FS_AVL_2G,
> + .value = ST_ACCEL_2_FS_AVL_2_VAL,
> + .gain = ST_ACCEL_2_FS_AVL_2_GAIN,
> + },
> + [1] = {
> + .num = ST_ACCEL_FS_AVL_4G,
> + .value = ST_ACCEL_2_FS_AVL_4_VAL,
> + .gain = ST_ACCEL_2_FS_AVL_4_GAIN,
> + },
> + [2] = {
> + .num = ST_ACCEL_FS_AVL_6G,
> + .value = ST_ACCEL_2_FS_AVL_6_VAL,
> + .gain = ST_ACCEL_2_FS_AVL_6_GAIN,
> + },
> + [3] = {
> + .num = ST_ACCEL_FS_AVL_8G,
> + .value = ST_ACCEL_2_FS_AVL_8_VAL,
> + .gain = ST_ACCEL_2_FS_AVL_8_GAIN,
> + },
> + [4] = {
> + .num = ST_ACCEL_FS_AVL_16G,
> + .value = ST_ACCEL_2_FS_AVL_16_VAL,
> + .gain = ST_ACCEL_2_FS_AVL_16_GAIN,
> + },
> + },
> + },
> + .drdy_irq = {
> + .addr = ST_ACCEL_2_DRDY_IRQ_ADDR,
> + .mask = ST_ACCEL_2_DRDY_IRQ_MASK,
> + },
> + .bdu = {
> + .addr = ST_ACCEL_2_BDU_ADDR,
> + .mask = ST_ACCEL_2_BDU_MASK,
> + },
> + .multi_read_bit = ST_ACCEL_2_MULTIREAD_BIT,
> + },
> + {
> + .wai = ST_ACCEL_3_WAI_EXP,
> + .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
> + .odr = {
> + .addr = ST_ACCEL_3_ODR_ADDR,
> + .mask = ST_ACCEL_3_ODR_MASK,
> + .num_bit = ST_ACCEL_3_ODR_N_BIT,
> + .odr_avl = {
> + { 50, ST_ACCEL_3_ODR_AVL_50HZ_VAL, },
> + { 100, ST_ACCEL_3_ODR_AVL_100HZ_VAL, },
> + { 400, ST_ACCEL_3_ODR_AVL_400HZ_VAL, },
> + { 1000, ST_ACCEL_3_ODR_AVL_1000HZ_VAL, },
> + },
> + },
> + .pw = {
> + .addr = ST_ACCEL_3_PW_ADDR,
> + .mask = ST_ACCEL_3_PW_MASK,
> + .num_bit = ST_ACCEL_3_PW_N_BIT,
> + .value_on = ST_SENSORS_DEF_POWER_ON_VALUE,
> + .value_off = ST_SENSORS_DEF_POWER_OFF_VALUE,
> + },
> + .enable_axis = {
> + .addr = ST_SENSORS_DEF_AXIS_ADDR,
> + .mask = ST_SENSORS_DEF_AXIS_MASK,
> + },
> + .fs = {
> + .addr = ST_ACCEL_3_FS_ADDR,
> + .mask = ST_ACCEL_3_FS_MASK,
> + .num_bit = ST_ACCEL_3_FS_N_BIT,
> + .fs_avl = {
> + [0] = {
> + .num = ST_ACCEL_FS_AVL_2G,
> + .value = ST_ACCEL_3_FS_AVL_2_VAL,
> + .gain = ST_ACCEL_3_FS_AVL_2_GAIN,
> + },
> + [1] = {
> + .num = ST_ACCEL_FS_AVL_4G,
> + .value = ST_ACCEL_3_FS_AVL_4_VAL,
> + .gain = ST_ACCEL_3_FS_AVL_4_GAIN,
> + },
> + [2] = {
> + .num = ST_ACCEL_FS_AVL_8G,
> + .value = ST_ACCEL_3_FS_AVL_8_VAL,
> + .gain = ST_ACCEL_3_FS_AVL_8_GAIN,
> + },
> + },
> + },
> + .bdu = {
> + .addr = ST_ACCEL_3_BDU_ADDR,
> + .mask = ST_ACCEL_3_BDU_MASK,
> + },
> + .drdy_irq = {
> + .addr = ST_ACCEL_3_DRDY_IRQ_ADDR,
> + .mask = ST_ACCEL_3_DRDY_IRQ_MASK,
> + },
> + .multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT,
> + },
> + {
> + .wai = ST_ACCEL_4_WAI_EXP,
> + .ch = (struct iio_chan_spec *)st_accel_16bit_channels,
> + .odr = {
> + .addr = ST_ACCEL_4_ODR_ADDR,
> + .mask = ST_ACCEL_4_ODR_MASK,
> + .num_bit = ST_ACCEL_4_ODR_N_BIT,
> + .odr_avl = {
> + { 3, ST_ACCEL_4_ODR_AVL_3HZ_VAL },
> + { 6, ST_ACCEL_4_ODR_AVL_6HZ_VAL, },
> + { 12, ST_ACCEL_4_ODR_AVL_12HZ_VAL, },
> + { 25, ST_ACCEL_4_ODR_AVL_25HZ_VAL, },
> + { 50, ST_ACCEL_4_ODR_AVL_50HZ_VAL, },
> + { 100, ST_ACCEL_4_ODR_AVL_100HZ_VAL, },
> + { 200, ST_ACCEL_4_ODR_AVL_200HZ_VAL, },
> + { 400, ST_ACCEL_4_ODR_AVL_400HZ_VAL, },
> + { 800, ST_ACCEL_4_ODR_AVL_800HZ_VAL, },
> + { 1600, ST_ACCEL_4_ODR_AVL_1600HZ_VAL, },
> + },
> + },
> + .pw = {
> + .addr = ST_ACCEL_4_ODR_ADDR,
> + .mask = ST_ACCEL_4_ODR_MASK,
> + .num_bit = ST_ACCEL_4_ODR_N_BIT,
> + .value_off = ST_SENSORS_DEF_POWER_OFF_VALUE,
> + },
> + .enable_axis = {
> + .addr = ST_SENSORS_DEF_AXIS_ADDR,
> + .mask = ST_SENSORS_DEF_AXIS_MASK,
> + },
> + .fs = {
> + .addr = ST_ACCEL_4_FS_ADDR,
> + .mask = ST_ACCEL_4_FS_MASK,
> + .num_bit = ST_ACCEL_4_FS_N_BIT,
> + .fs_avl = {
> + [0] = {
> + .num = ST_ACCEL_FS_AVL_2G,
> + .value = ST_ACCEL_4_FS_AVL_2_VAL,
> + .gain = ST_ACCEL_4_FS_AVL_2_GAIN,
> + },
> + [1] = {
> + .num = ST_ACCEL_FS_AVL_4G,
> + .value = ST_ACCEL_4_FS_AVL_4_VAL,
> + .gain = ST_ACCEL_4_FS_AVL_4_GAIN,
> + },
> + [2] = {
> + .num = ST_ACCEL_FS_AVL_6G,
> + .value = ST_ACCEL_4_FS_AVL_6_VAL,
> + .gain = ST_ACCEL_4_FS_AVL_6_GAIN,
> + },
> + [3] = {
> + .num = ST_ACCEL_FS_AVL_8G,
> + .value = ST_ACCEL_4_FS_AVL_8_VAL,
> + .gain = ST_ACCEL_4_FS_AVL_8_GAIN,
> + },
> + [4] = {
> + .num = ST_ACCEL_FS_AVL_16G,
> + .value = ST_ACCEL_4_FS_AVL_16_VAL,
> + .gain = ST_ACCEL_4_FS_AVL_16_GAIN,
> + },
> + },
> + },
> + .bdu = {
> + .addr = ST_ACCEL_4_BDU_ADDR,
> + .mask = ST_ACCEL_4_BDU_MASK,
> + },
> + .drdy_irq = {
> + .addr = ST_ACCEL_4_DRDY_IRQ_ADDR,
> + .mask = ST_ACCEL_4_DRDY_IRQ_MASK,
> + .ig1 = {
> + .en_addr = ST_ACCEL_4_IG1_EN_ADDR,
> + .en_mask = ST_ACCEL_4_IG1_EN_MASK,
> + },
> + },
> + .multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
> + },
> +};
> +
> +static int st_accel_check_device_list(struct st_sensors_data *adata, u8
> wai)
> +{
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(st_accel_sensors); i++) {
> + if (st_accel_sensors[i].wai == wai)
> + break;
> + }
> + if (i == ARRAY_SIZE(st_accel_sensors))
> + goto check_device_error;
> +
> + adata->index = i;
> +
> + return i;
> +
> +check_device_error:
> + return -ENODEV;
> +}
> +
> +int st_accel_init_sensor(struct iio_dev *indio_dev, u8 wai)
> +{
> + int err;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + err = st_accel_check_device_list(adata, wai);
> + if (err < 0)
> + goto init_error;
> +
> + adata->st_sensors = (const struct st_sensors *)st_accel_sensors;
> +
> +init_error:
> + return err;
> +}
> +EXPORT_SYMBOL(st_accel_init_sensor);
> +
> +MODULE_AUTHOR("Denis Ciocca <denis.ciocca@xxxxxx>");
> +MODULE_DESCRIPTION("STMicroelectronics accelerometers driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/iio/common/Kconfig b/drivers/iio/common/Kconfig
> index ed45ee5..315632f 100644
> --- a/drivers/iio/common/Kconfig
> +++ b/drivers/iio/common/Kconfig
> @@ -3,3 +3,4 @@
> #
>
> source "drivers/iio/common/hid-sensors/Kconfig"
> +source "drivers/iio/common/st-sensors/Kconfig"
> diff --git a/drivers/iio/common/Makefile b/drivers/iio/common/Makefile
> index 8158400..f876ca5 100644
> --- a/drivers/iio/common/Makefile
> +++ b/drivers/iio/common/Makefile
> @@ -7,3 +7,4 @@
> #
>
> obj-y += hid-sensors/
> +obj-y += st-sensors/
> diff --git a/drivers/iio/common/st-sensors/Kconfig
> b/drivers/iio/common/st-sensors/Kconfig
> new file mode 100644
> index 0000000..5e17159
> --- /dev/null
> +++ b/drivers/iio/common/st-sensors/Kconfig
> @@ -0,0 +1,17 @@
> +#
> +# STMicroelectronics sensors common modules
> +#
> +menu "STMicroelectronics Sensors IIO Common"
> +
> +config ST_SENSORS_IIO_COMMON
> + tristate "Common modules for all ST Sensors IIO drivers"
> + depends on (I2C || SPI_MASTER) && SYSFS
> + select IIO_TRIGGER if IIO_BUFFER
> + help
> + Say yes here to build support for HID sensor to use
> + HID sensor common processing for attributes and IIO triggers.
> + There are many attributes which can be shared among multiple
> + HID sensor drivers, this module contains processing for those
> + attributes.
> +
> +endmenu
> diff --git a/drivers/iio/common/st-sensors/Makefile
> b/drivers/iio/common/st-sensors/Makefile
> new file mode 100644
> index 0000000..5c517ff
> --- /dev/null
> +++ b/drivers/iio/common/st-sensors/Makefile
> @@ -0,0 +1,6 @@
> +#
> +# Makefile for the STMicroelectronics sensors common modules.
> +#
> +
> +obj-$(CONFIG_ST_SENSORS_IIO_COMMON) += st-sensors-iio-common.o
> +st-sensors-iio-common-y := st_sensors_core.o st_sensors_i2c.o
> st_sensors_spi.o st_sensors_trigger.o st_sensors_buffer.o
> diff --git a/drivers/iio/common/st-sensors/st_sensors.h
> b/drivers/iio/common/st-sensors/st_sensors.h
> new file mode 100644
> index 0000000..5daadfa
> --- /dev/null
> +++ b/drivers/iio/common/st-sensors/st_sensors.h
> @@ -0,0 +1,259 @@
> +/*
> + * STMicroelectronics sensors driver
> + *
> + * Copyright 2012 STMicroelectronics Inc.
> + *
> + * Denis Ciocca <denis.ciocca@xxxxxx>
> + * v. 1.0.0
> + * Licensed under the GPL-2.
> + */
> +
> +#ifndef ST_SENSORS_H
> +#define ST_SENSORS_H
> +
> +#define LSM303DLH_ACCEL_DEV_NAME "lsm303dlh_accel"
> +#define LSM303DLHC_ACCEL_DEV_NAME "lsm303dlhc_accel"
> +#define LIS3DH_ACCEL_DEV_NAME "lis3dh"
> +#define LSM330D_ACCEL_DEV_NAME "lsm330d_accel"
> +#define LSM330DL_ACCEL_DEV_NAME "lsm330dl_accel"
> +#define LSM330DLC_ACCEL_DEV_NAME "lsm330dlc_accel"
> +#define LSM303D_ACCEL_DEV_NAME "lsm303d"
> +#define LSM9DS0_ACCEL_DEV_NAME "lsm9ds0"
> +#define LIS331DLH_ACCEL_DEV_NAME "lis331dlh"
> +#define LSM303DL_ACCEL_DEV_NAME "lsm303dl_accel"
> +#define LSM303DLM_ACCEL_DEV_NAME "lsm303dlm_accel"
> +#define LSM330_ACCEL_DEV_NAME "lsm330_accel"
> +
> +#define L3G4200D_GYRO_DEV_NAME "l3g4200d"
> +#define LSM330DL_GYRO_DEV_NAME "lsm330dl_gyro"
> +#define L3GD20_GYRO_DEV_NAME "l3gd20"
> +#define L3GD20H_GYRO_DEV_NAME "l3gd20h"
> +#define LSM330D_GYRO_DEV_NAME "lsm330d_gyro"
> +#define LSM330DLC_GYRO_DEV_NAME "lsm330dlc_gyro"
> +#define LSM9DS0_GYRO_DEV_NAME "lsm9ds0_gyro"
> +#define L3G4IS_GYRO_DEV_NAME "l3g4is_ui"
> +#define LSM330_GYRO_DEV_NAME "lsm330_gyro"
> +
> +#define ST_SENSORS_NUMBER_ALL_CHANNELS 4
> +#define ST_SENSORS_NUMBER_DATA_CHANNELS 3
> +#define ST_SENSORS_BYTE_4CHANNEL 2
> +#define ST_SENSORS_SCAN_X 0
> +#define ST_SENSORS_SCAN_Y 1
> +#define ST_SENSORS_SCAN_Z 2
> +#define ST_SENSORS_TX_MAX_LENGHT 2
> +#define ST_SENSORS_RX_MAX_LENGHT 6
> +#define ST_SENSORS_FULLSCALE_AVL_MAX 5
> +#define ST_SENSORS_ODR_LIST_MAX 10
> +#define ST_SENSORS_ENABLE_ALL_CHANNELS 0x07
> +
> +/* DEFAULT VALUES FOR SENSORS */
> +#define ST_SENSORS_DEF_OUT_X_L_ADDR 0x28
> +#define ST_SENSORS_DEF_OUT_X_H_ADDR 0x29
> +#define ST_SENSORS_DEF_OUT_Y_L_ADDR 0x2a
> +#define ST_SENSORS_DEF_OUT_Y_H_ADDR 0x2b
> +#define ST_SENSORS_DEF_OUT_Z_L_ADDR 0x2c
> +#define ST_SENSORS_DEF_OUT_Z_H_ADDR 0x2d
> +#define ST_SENSORS_DEF_WAI_ADDRESS 0x0f
> +#define ST_SENSORS_DEF_POWER_ON_VALUE 0x01
> +#define ST_SENSORS_DEF_POWER_OFF_VALUE 0x00
> +#define ST_SENSORS_DEF_12_REALBITS 12
> +#define ST_SENSORS_DEF_16_REALBITS 16
> +#define ST_SENSORS_DEF_AXIS_ADDR 0x20
> +#define ST_SENSORS_DEF_AXIS_MASK 0x07
> +#define ST_SENSORS_DEF_AXIS_N_BIT 3
> +
> +#define ST_LSM_CHANNELS(sensor_type, index, mod, endian, bits, addr) \
> +{ \
> + .type = sensor_type, \
> + .modified = 1, \
> + .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
> + IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
> + .scan_index = index, \
> + .channel2 = mod, \
> + .address = addr, \
> + .scan_type = { \
> + .sign = 's', \
> + .realbits = bits, \
> + .shift = 16 - bits, \
> + .storagebits = 16, \
> + .endianness = endian, \
> + }, \
> +}
> +
> +/**
> + * struct st_sensors_data - ST sensors device status
> + * @dev: Pointer to instance of struct device (I2C or SPI).
> + * @trig: The trigger in use by the core driver.
> + * @enabled: Status of the sensor (false->off, true->on).
> + * @multiread_bit: Use or not particular bit for [I2C/SPI] multiread.
> + * @index: Number used to point the sensor being used in the
> + * st_sensors_sensors struct.
> + * @buffer_data: Data used by buffer part.
> + * @fullscale: Maximum range of measure by the sensor.
> + * @gain: Sensitivity of the sensor [m/s^2/LSB].
> + * @odr: Output data rate of the sensor [Hz].
> + * @buf_lock: Mutex to protect rx and tx buffers.
> + * @tx_buf: Buffer used by SPI transfer function to send data to the
> sensors.
> + * This buffer is used to avoid DMA not-aligned issue.
> + * @rx_buf: Buffer used by SPI transfer to receive data from sensors.
> + * This buffer is used to avoid DMA not-aligned issue.
> + * @read_byte: Function used to read one byte.
> + * @write_byte: Function used to write one byte.
> + * @read_multiple_byte: Function used to read multiple byte.
> + */
> +
> +struct st_sensors_data {
> + struct device *dev;
> + struct iio_trigger *trig;
> + const struct st_sensors *st_sensors;
> +
> + bool enabled;
> + bool multiread_bit;
> +
> + short index;
> +
> + char *buffer_data;
> +
> + unsigned int fullscale;
> + unsigned int gain;
> + unsigned int odr;
> +
> + struct mutex buf_lock;
> + u8 tx_buf[ST_SENSORS_TX_MAX_LENGHT] ____cacheline_aligned;
> + u8 rx_buf[ST_SENSORS_RX_MAX_LENGHT] ____cacheline_aligned;
> +
> + int (*read_byte) (struct st_sensors_data *adata, u8 reg_addr,
> + u8 *res_byte);
> + int (*write_byte) (struct st_sensors_data *adata, u8 reg_addr, u8 data);
> + int (*read_multiple_byte) (struct st_sensors_data *adata, u8 reg_addr,
> + int len, u8 *data);
> +};
> +
> +struct st_sensors_odr_available {
> + unsigned int hz;
> + u8 value;
> +};
> +
> +struct st_sensors_odr {
> + u8 addr;
> + u8 mask;
> + short num_bit;
> + struct st_sensors_odr_available odr_avl[ST_SENSORS_ODR_LIST_MAX];
> +};
> +
> +struct st_sensors_power {
> + u8 addr;
> + u8 mask;
> + unsigned short num_bit;
> + u8 value_off;
> + u8 value_on;
> +};
> +
> +struct st_sensors_axis {
> + u8 addr;
> + u8 mask;
> +};
> +
> +struct st_sensors_fs_available {
> + unsigned int num;
> + u8 value;
> + unsigned int gain;
> +};
> +
> +struct st_sensors_fullscale {
> + u8 addr;
> + u8 mask;
> + unsigned short num_bit;
> + struct st_sensors_fs_available fs_avl[ST_SENSORS_FULLSCALE_AVL_MAX];
> +};
> +
> +struct st_sensors_bdu {
> + u8 addr;
> + u8 mask;
> +};
> +
> +struct st_sensors_interrupt_generator {
> + u8 en_addr;
> + u8 latch_mask_addr;
> + u8 en_mask;
> + u8 latching_mask;
> +};
> +
> +struct st_sensors_data_ready_irq {
> + u8 addr;
> + u8 mask;
> + struct st_sensors_interrupt_generator ig1;
> +};
> +
> +/**
> + * struct st_sensors - ST sensors list
> + * @wai: Contents of WhoAmI register.
> + * @ch: IIO channels for the sensor.
> + * @odr: Output data rate register and odr list available.
> + * @pw: Power register of the sensor.
> + * @enable_axis: Enable one or more axis of the sensor.
> + * @fs: Full scale register and fs list available.
> + * @bdu: Block data update register.
> + * @drdy_irq: Data ready register of the sensor.
> + * @multi_read_bit: Use or not particular bit for [I2C/SPI] multiread.
> + */
> +
> +struct st_sensors {
> + u8 wai;
> + struct iio_chan_spec *ch;
> + struct st_sensors_odr odr;
> + struct st_sensors_power pw;
> + struct st_sensors_axis enable_axis;
> + struct st_sensors_fullscale fs;
> + struct st_sensors_bdu bdu;
> + struct st_sensors_data_ready_irq drdy_irq;
> + bool multi_read_bit;
> +};
> +
> +int st_sensors_iio_probe(struct iio_dev *indio_dev, int irq);
> +void st_sensors_iio_remove(struct iio_dev *indio_dev, int irq);
> +int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable);
> +int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable);
> +
> +#ifdef CONFIG_ST_ACCEL_3D
> +int st_accel_init_sensor(struct iio_dev *indio_dev, u8 wai);
> +#else /* CONFIG_ST_ACCEL_3D */
> +static inline int st_accel_init_sensor(struct iio_dev *indio_dev, u8 wai)
> +{
> + return -ENODEV;
> +}
> +#endif /* CONFIG_ST_ACCEL_3D */
> +
> +#ifdef CONFIG_ST_GYRO_3D
> +int st_gyro_init_sensor(struct iio_dev *indio_dev, u8 wai);
> +#else /* CONFIG_ST_GYRO_3D */
> +static inline int st_gyro_init_sensor(struct iio_dev *indio_dev, u8 wai)
> +{
> + return -ENODEV;
> +}
> +#endif /* CONFIG_ST_GYRO_3D */
> +
> +#ifdef CONFIG_IIO_BUFFER
> +int st_sensors_probe_trigger(struct iio_dev *indio_dev, int irq);
> +void st_sensors_remove_trigger(struct iio_dev *indio_dev, int irq);
> +int st_sensors_allocate_ring(struct iio_dev *indio_dev);
> +void st_sensors_deallocate_ring(struct iio_dev *indio_dev);
> +#else /* CONFIG_IIO_BUFFER */
> +static inline int st_sensors_probe_trigger(struct iio_dev *indio_dev,
> int irq)
> +{
> + return 0;
> +}
> +static inline void st_sensors_remove_trigger(struct iio_dev *indio_dev,
> int irq)
> +{
> + return;
> +}
> +static inline int st_sensors_allocate_ring(struct iio_dev *indio_dev)
> +{
> + return 0;
> +}
> +static inline void st_sensors_deallocate_ring(struct iio_dev *indio_dev)
> +{
> +}
> +#endif /* CONFIG_IIO_BUFFER */
> +
> +#endif /* ST_SENSORS_H */
> diff --git a/drivers/iio/common/st-sensors/st_sensors_buffer.c
> b/drivers/iio/common/st-sensors/st_sensors_buffer.c
> new file mode 100644
> index 0000000..b8d1cc3
> --- /dev/null
> +++ b/drivers/iio/common/st-sensors/st_sensors_buffer.c
> @@ -0,0 +1,178 @@
> +/*
> + * STMicroelectronics sensors driver
> + *
> + * Copyright 2012 STMicroelectronics Inc.
> + *
> + * Denis Ciocca <denis.ciocca@xxxxxx>
> + *
> + * Licensed under the GPL-2.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/kernel.h>
> +#include <linux/slab.h>
> +#include <linux/stat.h>
> +#include <linux/interrupt.h>
> +#include <linux/byteorder/generic.h>
> +#include <linux/i2c.h>
> +#include <linux/iio/iio.h>
> +#include <linux/iio/buffer.h>
> +#include <linux/iio/trigger_consumer.h>
> +#include <linux/iio/triggered_buffer.h>
> +
> +#include "st_sensors.h"
> +
> +
> +#define ST_SENSORS_ENABLE_ALL_CHANNELS 0x07
> +
> +static int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8
> *buf)
> +{
> + int i, n, len;
> + u8 reg_addr[ST_SENSORS_NUMBER_DATA_CHANNELS];
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + for (i = 0; i < ST_SENSORS_NUMBER_DATA_CHANNELS; i++) {
> + if (test_bit(i, indio_dev->active_scan_mask)) {
> + reg_addr[n] = indio_dev->channels[i].address;
> + n++;
> + }
> + }
> + switch (n) {
> + case 1:
> + len = adata->read_multiple_byte(adata, reg_addr[0],
> + ST_SENSORS_BYTE_4CHANNEL, buf);
> + break;
> + case 2:
> + if ((reg_addr[1] - reg_addr[0]) == ST_SENSORS_BYTE_4CHANNEL) {
> + len = adata->read_multiple_byte(adata, reg_addr[0],
> + ST_SENSORS_BYTE_4CHANNEL*n,
> + buf);
> + } else {
> + u8 rx_array[ST_SENSORS_BYTE_4CHANNEL*
> + ST_SENSORS_NUMBER_DATA_CHANNELS];
> + len = adata->read_multiple_byte(adata, reg_addr[0],
> + ST_SENSORS_BYTE_4CHANNEL*
> + ST_SENSORS_NUMBER_DATA_CHANNELS,
> + rx_array);
> + if (len < 0)
> + goto read_data_channels_error;
> +
> + for (i = 0; i < n * ST_SENSORS_NUMBER_DATA_CHANNELS;
> + i++) {
> + if (i < n)
> + buf[i] = rx_array[i];
> + else
> + buf[i] = rx_array[n + i];
> + }
> + len = ST_SENSORS_BYTE_4CHANNEL*n;
> + }
> + break;
> + case 3:
> + len = adata->read_multiple_byte(adata, reg_addr[0],
> + ST_SENSORS_BYTE_4CHANNEL*
> + ST_SENSORS_NUMBER_DATA_CHANNELS,
> + buf);
> + break;
> + default:
> + len = -EINVAL;
> + goto read_data_channels_error;
> + }
> + if (len != ST_SENSORS_BYTE_4CHANNEL*n) {
> + len = -EIO;
> + goto read_data_channels_error;
> + }
> +
> +read_data_channels_error:
> + return len;
> +}
> +
> +static irqreturn_t st_sensors_trigger_handler(int irq, void *p)
> +{
> + int len;
> + struct iio_poll_func *pf = p;
> + struct iio_dev *indio_dev = pf->indio_dev;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + len = st_sensors_get_buffer_element(indio_dev, adata->buffer_data);
> + if (len < 0)
> + goto st_sensors_get_buffer_element_error;
> +
> + if (indio_dev->scan_timestamp)
> + *(s64 *)((u8 *)adata->buffer_data +
> + ALIGN(len, sizeof(s64))) = pf->timestamp;
> +
> + iio_push_to_buffers(indio_dev, adata->buffer_data);
> +
> +st_sensors_get_buffer_element_error:
> + iio_trigger_notify_done(indio_dev->trig);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static int st_sensors_buffer_postenable(struct iio_dev *indio_dev)
> +{
> + int err, i;
> + u8 active_bit = 0x00;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + adata->buffer_data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
> + if (adata->buffer_data == NULL) {
> + err = -ENOMEM;
> + goto allocate_memory_error;
> + }
> +
> + for (i = 0; i < ST_SENSORS_NUMBER_DATA_CHANNELS; i++)
> + if (test_bit(i, indio_dev->active_scan_mask))
> + active_bit |= (1 << i);
> +
> + err = st_sensors_set_axis_enable(indio_dev, active_bit);
> + if (err < 0)
> + goto st_sensors_buffer_postenable_error;
> +
> + err = iio_triggered_buffer_postenable(indio_dev);
> +
> + return err;
> +
> +st_sensors_buffer_postenable_error:
> + kfree(adata->buffer_data);
> +allocate_memory_error:
> + return err;
> +}
> +
> +static int st_sensors_buffer_predisable(struct iio_dev *indio_dev)
> +{
> + int err;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + err = iio_triggered_buffer_predisable(indio_dev);
> + if (err < 0)
> + goto st_sensors_buffer_predisable_error;
> +
> + err = st_sensors_set_axis_enable(indio_dev,
> + ST_SENSORS_ENABLE_ALL_CHANNELS);
> + if (err < 0)
> + goto st_sensors_buffer_predisable_error;
> +
> +st_sensors_buffer_predisable_error:
> + kfree(adata->buffer_data);
> + return err;
> +}
> +
> +static const struct iio_buffer_setup_ops st_sensors_buffer_setup_ops = {
> + .preenable = &iio_sw_buffer_preenable,
> + .postenable = &st_sensors_buffer_postenable,
> + .predisable = &st_sensors_buffer_predisable,
> +};
> +
> +int st_sensors_allocate_ring(struct iio_dev *indio_dev)
> +{
> + return iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
> + &st_sensors_trigger_handler, &st_sensors_buffer_setup_ops);
> +}
> +EXPORT_SYMBOL(st_sensors_allocate_ring);
> +
> +void st_sensors_deallocate_ring(struct iio_dev *indio_dev)
> +{
> + iio_triggered_buffer_cleanup(indio_dev);
> +}
> +EXPORT_SYMBOL(st_sensors_deallocate_ring);
> diff --git a/drivers/iio/common/st-sensors/st_sensors_core.c
> b/drivers/iio/common/st-sensors/st_sensors_core.c
> new file mode 100644
> index 0000000..9b9e951
> --- /dev/null
> +++ b/drivers/iio/common/st-sensors/st_sensors_core.c
> @@ -0,0 +1,589 @@
> +/*
> + * STMicroelectronics sensors driver
> + *
> + * Copyright 2012 STMicroelectronics Inc.
> + *
> + * Denis Ciocca <denis.ciocca@xxxxxx>
> + *
> + * Licensed under the GPL-2.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/slab.h>
> +#include <linux/errno.h>
> +#include <linux/types.h>
> +#include <linux/mutex.h>
> +#include <linux/interrupt.h>
> +#include <linux/i2c.h>
> +#include <linux/gpio.h>
> +#include <linux/irq.h>
> +#include <linux/iio/iio.h>
> +#include <linux/iio/sysfs.h>
> +#include <linux/iio/trigger_consumer.h>
> +#include <linux/iio/buffer.h>
> +
> +#include "st_sensors.h"
> +
> +
> +static int st_sensors_write_data_with_mask(struct iio_dev *indio_dev,
> + u8 reg_addr, u8 mask, short num_bit, u8 data)
> +{
> + int err;
> + u8 new_data;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + err = adata->read_byte(adata, reg_addr, &new_data);
> + if (err < 0)
> + goto st_sensors_write_data_with_mask_error;
> +
> + new_data = ((new_data & (~mask)) | ((data << __ffs(mask)) & mask));
> + err = adata->write_byte(adata, reg_addr, new_data);
> +
> +st_sensors_write_data_with_mask_error:
> + return err;
> +}
> +
> +int st_sensors_match_odr(const struct st_sensors *sensor,
> + unsigned int odr, struct st_sensors_odr_available *odr_out)
> +{
> + int i, ret = -EINVAL;
> +
> + for (i = 0; i < ARRAY_SIZE(sensor->odr.odr_avl); i++) {
> + if (sensor->odr.odr_avl[i].hz == odr) {
> + odr_out->hz = sensor->odr.odr_avl[i].hz;
> + odr_out->value = sensor->odr.odr_avl[i].value;
> + ret = 0;
> + break;
> + }
> + }
> +
> + return ret;
> +}
> +
> +int st_sensors_match_fs(const struct st_sensors *sensor,
> + unsigned int fs, struct st_sensors_fs_available *fs_out)
> +{
> + int i, ret = -EINVAL;
> +
> + for (i = 0; i < ARRAY_SIZE(sensor->fs.fs_avl); i++) {
> + if (sensor->fs.fs_avl[i].num == fs) {
> + fs_out->num = sensor->fs.fs_avl[i].num;
> + fs_out->gain = sensor->fs.fs_avl[i].gain;
> + fs_out->value = sensor->fs.fs_avl[i].value;
> + ret = 0;
> + break;
> + }
> + }
> +
> + return ret;
> +}
> +
> +int st_sensors_match_scale(const struct st_sensors *sensor,
> + int scale, struct st_sensors_fs_available *fs_out)
> +{
> + int i, ret = -EINVAL;
> +
> + for (i = 0; i < ARRAY_SIZE(sensor->fs.fs_avl); i++) {
> + if (sensor->fs.fs_avl[i].gain == scale) {
> + fs_out->num = sensor->fs.fs_avl[i].num;
> + fs_out->gain = sensor->fs.fs_avl[i].gain;
> + fs_out->value = sensor->fs.fs_avl[i].value;
> + ret = 0;
> + break;
> + }
> + }
> +
> + return ret;
> +}
> +
> +int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable)
> +{
> + int err;
> + struct st_sensors_data *adata;
> +
> + adata = iio_priv(indio_dev);
> + if (adata->st_sensors[adata->index].drdy_irq.ig1.en_addr > 0) {
> + err = st_sensors_write_data_with_mask(indio_dev,
> + adata->st_sensors[adata->index].drdy_irq.ig1.en_addr,
> + adata->st_sensors[adata->index].drdy_irq.ig1.en_mask, 1,
> + (int)enable);
> + if (err < 0)
> + goto st_sensors_set_dataready_irq_error;
> + }
> +
> + if (adata->st_sensors[adata->index].drdy_irq.ig1.latch_mask_addr > 0) {
> + err = st_sensors_write_data_with_mask(indio_dev,
> + adata->st_sensors[adata->index].drdy_irq.ig1.latch_mask_addr,
> + adata->st_sensors[adata->index].drdy_irq.ig1.latching_mask, 1,
> + (int)enable);
> + if (err < 0)
> + goto st_sensors_set_dataready_irq_error;
> + }
> +
> + err = st_sensors_write_data_with_mask(indio_dev,
> + adata->st_sensors[adata->index].drdy_irq.addr,
> + adata->st_sensors[adata->index].drdy_irq.mask, 1, (int)enable);
> +
> +st_sensors_set_dataready_irq_error:
> + return err;
> +}
> +EXPORT_SYMBOL(st_sensors_set_dataready_irq);
> +
> +static int st_sensors_set_bdu(struct iio_dev *indio_dev,
> + const struct st_sensors_bdu *bdu, bool value)
> +{
> + return st_sensors_write_data_with_mask(indio_dev, bdu->addr, bdu->mask,
> + 1, (u8)value);
> +}
> +
> +static int st_sensors_set_odr(struct iio_dev *indio_dev,
> + struct st_sensors_odr_available *odr_available)
> +{
> + int err;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + if ((adata->st_sensors[adata->index].odr.addr ==
> + adata->st_sensors[adata->index].pw.addr) &&
> + (adata->st_sensors[adata->index].odr.mask ==
> + adata->st_sensors[adata->index].pw.mask)) {
> + if (adata->enabled == true) {
> + err = st_sensors_write_data_with_mask(indio_dev,
> + adata->st_sensors[adata->index].odr.addr,
> + adata->st_sensors[adata->index].odr.mask,
> + adata->st_sensors[adata->index].odr.num_bit,
> + odr_available->value);
> + } else {
> + adata->odr = odr_available->hz;
> + err = 0;
> + }
> + } else {
> + err = st_sensors_write_data_with_mask(indio_dev,
> + adata->st_sensors[adata->index].odr.addr,
> + adata->st_sensors[adata->index].odr.mask,
> + adata->st_sensors[adata->index].odr.num_bit,
> + odr_available->value);
> + }
> +
> + return err;
> +}
> +
> +int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable)
> +{
> + int err;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + err = st_sensors_write_data_with_mask(indio_dev,
> + adata->st_sensors[adata->index].enable_axis.addr,
> + adata->st_sensors[adata->index].enable_axis.mask,
> + ST_SENSORS_DEF_AXIS_N_BIT, axis_enable);
> +
> + return err;
> +}
> +EXPORT_SYMBOL(st_sensors_set_axis_enable);
> +
> +static int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable)
> +{
> + int err = -EINVAL;
> + bool found;
> + u8 tmp_value;
> + struct st_sensors_odr_available odr_out;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + if (enable) {
> + found = false;
> + tmp_value = adata->st_sensors[adata->index].pw.value_on;
> + if ((adata->st_sensors[adata->index].odr.addr ==
> + adata->st_sensors[adata->index].pw.addr) &&
> + (adata->st_sensors[adata->index].odr.mask ==
> + adata->st_sensors[adata->index].pw.mask)) {
> + err = st_sensors_match_odr(
> + &adata->st_sensors[adata->index], adata->odr,
> + &odr_out);
> + if (err < 0)
> + goto set_enable_error;
> + tmp_value = odr_out.value;
> + found = true;
> + }
> + err = st_sensors_write_data_with_mask(indio_dev,
> + adata->st_sensors[adata->index].pw.addr,
> + adata->st_sensors[adata->index].pw.mask,
> + adata->st_sensors[adata->index].pw.num_bit,
> + tmp_value);
> + if (err < 0)
> + goto set_enable_error;
> + adata->enabled = true;
> + if (found)
> + adata->odr = odr_out.hz;
> + } else {
> + err = st_sensors_write_data_with_mask(indio_dev,
> + adata->st_sensors[adata->index].pw.addr,
> + adata->st_sensors[adata->index].pw.mask,
> + adata->st_sensors[adata->index].pw.num_bit,
> + adata->st_sensors[adata->index].pw.value_off);
> + if (err < 0)
> + goto set_enable_error;
> + adata->enabled = false;
> + }
> +
> +set_enable_error:
> + return err;
> +}
> +
> +static int st_sensors_set_fullscale(struct iio_dev *indio_dev,
> + struct st_sensors_fs_available *fs_avl)
> +{
> + int err;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + err = st_sensors_write_data_with_mask(indio_dev,
> + adata->st_sensors[adata->index].fs.addr,
> + adata->st_sensors[adata->index].fs.mask,
> + adata->st_sensors[adata->index].fs.num_bit,
> + fs_avl->value);
> + if (err < 0)
> + goto st_sensors_set_fullscale_error;
> +
> + adata->fullscale = fs_avl->num;
> + adata->gain = fs_avl->gain;
> + return err;
> +
> +st_sensors_set_fullscale_error:
> + dev_err(&indio_dev->dev, "failed to set new fullscale.\n");
> + return err;
> +}
> +
> +static int st_sensors_read_raw(struct iio_dev *indio_dev,
> + struct iio_chan_spec const *ch, int *val,
> + int *val2, long mask)
> +{
> + int err;
> + u8 outdata[ST_SENSORS_BYTE_4CHANNEL];
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + switch (mask) {
> + case IIO_CHAN_INFO_RAW:
> + mutex_lock(&indio_dev->mlock);
> + if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
> + err = -EBUSY;
> + goto read_error;
> + } else {
> + if (!adata->enabled) {
> + err = -EIO;
> + goto read_error;
> + } else {
> + err = adata->read_multiple_byte(adata,
> + ch->address, ST_SENSORS_BYTE_4CHANNEL,
> + outdata);
> + if (err < 0)
> + goto read_error;
> +
> + *val = ((s16)le16_to_cpup((u16 *)outdata))
> + >> ch->scan_type.shift;
> + }
> + }
> + mutex_unlock(&indio_dev->mlock);
> + return IIO_VAL_INT;
> + case IIO_CHAN_INFO_SCALE:
> + *val = 0;
> + *val2 = adata->gain;
> + return IIO_VAL_INT_PLUS_MICRO;
> + default:
> + return -EINVAL;
> + }
> +
> +read_error:
> + mutex_unlock(&indio_dev->mlock);
> + return err;
> +}
> +
> +static int st_sensors_write_raw(struct iio_dev *indio_dev,
> + struct iio_chan_spec const *chan, int val, int val2, long mask)
> +{
> + int err;
> + struct st_sensors_fs_available fs_out;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + switch (mask) {
> + case IIO_CHAN_INFO_SCALE:
> + err = st_sensors_match_scale(&adata->st_sensors[adata->index],
> + val2, &fs_out);
> + if (err < 0)
> + goto write_error;
> +
> + err = st_sensors_set_fullscale(indio_dev, &fs_out);
> + break;
> + default:
> + err = -EINVAL;
> + }
> +
> +write_error:
> + return err;
> +}
> +
> +static ssize_t st_sensors_sysfs_set_sampling_frequency(struct device *dev,
> + struct device_attribute *attr, const char *buf, size_t size)
> +{
> + int err;
> + unsigned int freq;
> + struct st_sensors_odr_available odr_out;
> + struct iio_dev *indio_dev = dev_get_drvdata(dev);
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + err = kstrtoint(buf, 10, &freq);
> + if (err < 0)
> + goto conversion_error;
> +
> + mutex_lock(&indio_dev->mlock);
> + err = st_sensors_match_odr(&adata->st_sensors[adata->index],
> + freq, &odr_out);
> + if (err < 0)
> + goto st_sensors_sysfs_set_sampling_frequency_error;
> +
> + err = st_sensors_set_odr(indio_dev, &odr_out);
> + if (err < 0)
> + goto st_sensors_sysfs_set_sampling_frequency_error;
> +
> + adata->odr = odr_out.hz;
> +
> +st_sensors_sysfs_set_sampling_frequency_error:
> + mutex_unlock(&indio_dev->mlock);
> +conversion_error:
> + return err < 0 ? err : size;
> +}
> +
> +static ssize_t st_sensors_sysfs_get_sampling_frequency(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + struct iio_dev *indio_dev = dev_get_drvdata(dev);
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + return sprintf(buf, "%d\n", adata->odr);
> +}
> +
> +static ssize_t st_sensors_sysfs_set_powerdown(struct device *dev,
> + struct device_attribute *attr, const char *buf, size_t size)
> +{
> + int err;
> + bool powerdown;
> + struct iio_dev *indio_dev = dev_get_drvdata(dev);
> +
> + err = strtobool(buf, &powerdown);
> + if (err < 0)
> + goto set_enable_error;
> +
> + mutex_lock(&indio_dev->mlock);
> + err = st_sensors_set_enable(indio_dev, !powerdown);
> + mutex_unlock(&indio_dev->mlock);
> +
> +set_enable_error:
> + return err < 0 ? err : size;
> +}
> +
> +static ssize_t st_sensors_sysfs_get_powerdown(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + struct iio_dev *indio_dev = dev_get_drvdata(dev);
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + return sprintf(buf, "%d\n", (int)(!adata->enabled));
> +}
> +
> +static ssize_t st_sensors_sysfs_scale_available(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + int i, len = 0;
> + struct iio_dev *indio_dev = dev_get_drvdata(dev);
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + mutex_lock(&indio_dev->mlock);
> + for (i = 0; i < ARRAY_SIZE(adata->st_sensors[adata->index].fs.fs_avl);
> + i++) {
> + if (adata->st_sensors[adata->index].fs.fs_avl[i].num == 0)
> + break;
> +
> + len += sprintf(buf+len, "0.%06u ",
> + adata->st_sensors[adata->index].fs.fs_avl[i].gain);
> + }
> + mutex_unlock(&indio_dev->mlock);
> + buf[len-1] = '\n';
> +
> + return len;
> +}
> +
> +static ssize_t st_sensors_sysfs_sampling_frequency_available(struct
> device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + int i, len = 0;
> + struct iio_dev *indio_dev = dev_get_drvdata(dev);
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + mutex_lock(&indio_dev->mlock);
> + for (i = 0; i < ARRAY_SIZE(adata->st_sensors[adata->index].odr.odr_avl);
> + i++) {
> + if (adata->st_sensors[adata->index].odr.odr_avl[i].hz == 0)
> + break;
> +
> + len += sprintf(buf + len, "%d ",
> + adata->st_sensors[adata->index].odr.odr_avl[i].hz);
> + }
> + mutex_unlock(&indio_dev->mlock);
> + buf[len - 1] = '\n';
> +
> + return len;
> +}
> +
> +static IIO_DEVICE_ATTR(sampling_frequency_available, S_IRUGO,
> + st_sensors_sysfs_sampling_frequency_available, NULL , 0);
> +
> +static IIO_DEVICE_ATTR(in_sensors_scale_available, S_IRUGO,
> + st_sensors_sysfs_scale_available, NULL , 0);
> +
> +static IIO_DEVICE_ATTR(powerdown, S_IWUSR | S_IRUGO,
> + st_sensors_sysfs_get_powerdown,
> + st_sensors_sysfs_set_powerdown , 0);
> +
> +static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
> + st_sensors_sysfs_get_sampling_frequency,
> + st_sensors_sysfs_set_sampling_frequency);
> +
> +static struct attribute *st_sensor_attributes[] = {
> + &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
> + &iio_dev_attr_in_sensors_scale_available.dev_attr.attr,
> + &iio_dev_attr_powerdown.dev_attr.attr,
> + &iio_dev_attr_sampling_frequency.dev_attr.attr,
> + NULL,
> +};
> +
> +static const struct attribute_group st_sensor_attribute_group = {
> + .attrs = st_sensor_attributes,
> +};
> +
> +static const struct iio_info sensor_info = {
> + .driver_module = THIS_MODULE,
> + .attrs = &st_sensor_attribute_group,
> + .read_raw = &st_sensors_read_raw,
> + .write_raw = &st_sensors_write_raw,
> +};
> +
> +static int st_sensors_get_wai_device(struct iio_dev *indio_dev, u8
> reg_addr,
> + u8 *value)
> +{
> + int ret;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + ret = adata->read_byte(adata, reg_addr, value);
> + if (ret < 0)
> + goto read_byte_wai_error;
> +
> + return 0;
> +
> +read_byte_wai_error:
> + dev_err(&indio_dev->dev,
> + "failed to read WhoAmI (register 0x%x).\n", reg_addr);
> + return -EIO;
> +}
> +
> +static int st_init_sensor(struct iio_dev *indio_dev, int wai)
> +{
> + int err;
> +
> + err = st_accel_init_sensor(indio_dev, wai);
> + if (err < 0)
> + err = st_gyro_init_sensor(indio_dev, wai);
> +
> + if (err < 0)
> + dev_err(&indio_dev->dev,
> + "device not supported -> wai (0x%x).\n", wai);
> +
> + return err;
> +}
> +
> +int st_sensors_iio_probe(struct iio_dev *indio_dev, int irq)
> +{
> + int err;
> + u8 wai;
> + struct st_sensors_odr_available odr_out;
> + struct st_sensors_fs_available fs_out;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + indio_dev->modes = INDIO_DIRECT_MODE;
> +
> + err = st_sensors_get_wai_device(indio_dev,
> + ST_SENSORS_DEF_WAI_ADDRESS, &wai);
> + if (err < 0)
> + goto st_sensors_iio_probe_error;
> +
> + err = st_init_sensor(indio_dev, wai);
> + if (err < 0)
> + goto st_sensors_iio_probe_error;
> +
> + indio_dev->info = &sensor_info;
> + adata->multiread_bit = adata->st_sensors[adata->index].multi_read_bit;
> + indio_dev->channels = adata->st_sensors[adata->index].ch;
> + indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
> +
> + adata->fullscale = adata->st_sensors[adata->index].fs.fs_avl[0].num;
> + adata->odr = adata->st_sensors[adata->index].odr.odr_avl[0].hz;
> +
> + err = st_sensors_set_enable(indio_dev, false);
> + if (err < 0)
> + goto st_sensors_iio_probe_error;
> +
> + err = st_sensors_set_axis_enable(indio_dev,
> + ST_SENSORS_ENABLE_ALL_CHANNELS);
> + if (err < 0)
> + goto st_sensors_iio_probe_error;
> +
> + st_sensors_match_fs(&adata->st_sensors[adata->index],
> + adata->fullscale, &fs_out);
> + err = st_sensors_set_fullscale(indio_dev, &fs_out);
> + if (err < 0)
> + goto st_sensors_iio_probe_error;
> +
> + st_sensors_match_odr(&adata->st_sensors[adata->index],
> + adata->odr, &odr_out);
> + err = st_sensors_set_odr(indio_dev, &odr_out);
> + if (err < 0)
> + goto st_sensors_iio_probe_error;
> +
> + err = st_sensors_set_bdu(indio_dev,
> + &adata->st_sensors[adata->index].bdu, true);
> +
> + err = st_sensors_allocate_ring(indio_dev);
> + if (err < 0)
> + goto st_sensors_iio_probe_error;
> +
> + if (irq > 0) {
> + err = st_sensors_probe_trigger(indio_dev, irq);
> + if (err < 0)
> + goto acc_probe_trigger_error;
> + }
> +
> + err = iio_device_register(indio_dev);
> + if (err)
> + goto iio_device_register_error;
> +
> + return err;
> +
> +iio_device_register_error:
> + st_sensors_remove_trigger(indio_dev, irq);
> +acc_probe_trigger_error:
> + st_sensors_deallocate_ring(indio_dev);
> +st_sensors_iio_probe_error:
> + return err;
> +}
> +EXPORT_SYMBOL(st_sensors_iio_probe);
> +
> +void st_sensors_iio_remove(struct iio_dev *indio_dev, int irq)
> +{
> + iio_device_unregister(indio_dev);
> + st_sensors_remove_trigger(indio_dev, irq);
> + st_sensors_deallocate_ring(indio_dev);
> + iio_device_free(indio_dev);
> +}
> +EXPORT_SYMBOL(st_sensors_iio_remove);
> +
> +MODULE_AUTHOR("Denis Ciocca <denis.ciocca@xxxxxx>");
> +MODULE_DESCRIPTION("STMicroelectronics sensors core driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/iio/common/st-sensors/st_sensors_i2c.c
> b/drivers/iio/common/st-sensors/st_sensors_i2c.c
> new file mode 100644
> index 0000000..2d2d5ee
> --- /dev/null
> +++ b/drivers/iio/common/st-sensors/st_sensors_i2c.c
> @@ -0,0 +1,137 @@
> +/*
> + * STMicroelectronics sensors driver
> + *
> + * Copyright 2012 STMicroelectronics Inc.
> + *
> + * Denis Ciocca <denis.ciocca@xxxxxx>
> + *
> + * Licensed under the GPL-2.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/slab.h>
> +#include <linux/i2c.h>
> +#include <linux/iio/iio.h>
> +#include <linux/iio/trigger.h>
> +
> +#include "st_sensors.h"
> +
> +#define ST_SENSORS_I2C_MULTIREAD 0x80
> +
> +static int st_sensors_i2c_read_byte(struct st_sensors_data *adata,
> + u8 reg_addr, u8 *res_byte)
> +{
> + int err;
> +
> + err = i2c_smbus_read_byte_data(to_i2c_client(adata->dev), reg_addr);
> + if (err < 0)
> + goto st_sensors_i2c_read_byte_error;
> +
> + *res_byte = err & 0xff;
> +
> +st_sensors_i2c_read_byte_error:
> + return err < 0 ? err : 0;
> +}
> +
> +static int st_sensors_i2c_read_multiple_byte(struct st_sensors_data *adata,
> + u8 reg_addr, int len, u8 *data)
> +{
> + if (adata->multiread_bit == true)
> + reg_addr |= ST_SENSORS_I2C_MULTIREAD;
> +
> + return i2c_smbus_read_i2c_block_data(to_i2c_client(adata->dev),
> + reg_addr, len, data);
> +}
> +
> +static int st_sensors_i2c_write_byte(struct st_sensors_data *adata,
> + u8 reg_addr, u8 data)
> +{
> + return i2c_smbus_write_byte_data(to_i2c_client(adata->dev),
> + reg_addr, data);
> +}
> +
> +static int __devinit st_sensors_i2c_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + struct iio_dev *indio_dev;
> + struct st_sensors_data *adata;
> + int err;
> +
> + indio_dev = iio_device_alloc(sizeof(*adata));
> + if (indio_dev == NULL) {
> + err = -ENOMEM;
> + goto iio_device_alloc_error;
> + }
> +
> + adata = iio_priv(indio_dev);
> + adata->dev = &client->dev;
> + i2c_set_clientdata(client, indio_dev);
> +
> + indio_dev->dev.parent = &client->dev;
> + indio_dev->name = client->name;
> +
> + adata->read_byte = st_sensors_i2c_read_byte;
> + adata->write_byte = st_sensors_i2c_write_byte;
> + adata->read_multiple_byte = st_sensors_i2c_read_multiple_byte;
> +
> + err = st_sensors_iio_probe(indio_dev, client->irq);
> + if (err < 0)
> + goto acc_iio_default_error;
> +
> + return 0;
> +
> +acc_iio_default_error:
> + iio_device_free(indio_dev);
> +iio_device_alloc_error:
> + return err;
> +}
> +
> +static int st_sensors_i2c_remove(struct i2c_client *client)
> +{
> + struct iio_dev *indio_dev = i2c_get_clientdata(client);
> + st_sensors_iio_remove(indio_dev, client->irq);
> +
> + return 0;
> +}
> +
> +static const struct i2c_device_id st_sensors_id_table[] = {
> + { LSM303DLH_ACCEL_DEV_NAME },
> + { LSM303DLHC_ACCEL_DEV_NAME },
> + { LIS3DH_ACCEL_DEV_NAME },
> + { LSM330D_ACCEL_DEV_NAME },
> + { LSM330DL_ACCEL_DEV_NAME },
> + { LSM330DLC_ACCEL_DEV_NAME },
> + { LSM303D_ACCEL_DEV_NAME },
> + { LSM9DS0_ACCEL_DEV_NAME },
> + { LIS331DLH_ACCEL_DEV_NAME },
> + { LSM303DL_ACCEL_DEV_NAME },
> + { LSM303DLM_ACCEL_DEV_NAME },
> + { LSM330_ACCEL_DEV_NAME },
> + { L3G4200D_GYRO_DEV_NAME },
> + { LSM330DL_GYRO_DEV_NAME },
> + { L3GD20_GYRO_DEV_NAME },
> + { L3GD20H_GYRO_DEV_NAME },
> + { LSM330D_GYRO_DEV_NAME },
> + { LSM330DLC_GYRO_DEV_NAME },
> + { LSM9DS0_GYRO_DEV_NAME },
> + { L3G4IS_GYRO_DEV_NAME },
> + { LSM330_GYRO_DEV_NAME },
> + {},
> +};
> +MODULE_DEVICE_TABLE(i2c, st_sensors_id_table);
> +
> +static struct i2c_driver st_sensors_driver = {
> + .driver = {
> + .owner = THIS_MODULE,
> + .name = "st-sensors-i2c",
> + },
> + .probe = st_sensors_i2c_probe,
> + .remove = st_sensors_i2c_remove,
> + .id_table = st_sensors_id_table,
> +};
> +module_i2c_driver(st_sensors_driver);
> +
> +MODULE_AUTHOR("Denis Ciocca <denis.ciocca@xxxxxx>");
> +MODULE_DESCRIPTION("STMicroelectronics sensors i2c driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/iio/common/st-sensors/st_sensors_spi.c
> b/drivers/iio/common/st-sensors/st_sensors_spi.c
> new file mode 100644
> index 0000000..1df0c80
> --- /dev/null
> +++ b/drivers/iio/common/st-sensors/st_sensors_spi.c
> @@ -0,0 +1,183 @@
> +/*
> + * STMicroelectronics sensors driver
> + *
> + * Copyright 2012 STMicroelectronics Inc.
> + *
> + * Denis Ciocca <denis.ciocca@xxxxxx>
> + *
> + * Licensed under the GPL-2.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/slab.h>
> +#include <linux/spi/spi.h>
> +#include <linux/iio/iio.h>
> +#include <linux/iio/trigger.h>
> +
> +#include "st_sensors.h"
> +
> +
> +#define ST_SENSORS_SPI_READ 0x80;
> +#define ST_SENSORS_SPI_MULTIREAD 0xc0
> +
> +static int st_sensors_spi_read(struct st_sensors_data *adata,
> + u8 reg_addr, int len, u8 *data)
> +{
> + struct spi_message msg;
> + int err;
> +
> + struct spi_transfer xfers[] = {
> + {
> + .tx_buf = adata->tx_buf,
> + .bits_per_word = 8,
> + .len = 1,
> + },
> + {
> + .rx_buf = adata->rx_buf,
> + .bits_per_word = 8,
> + .len = len,
> + }
> + };
> +
> + mutex_lock(&adata->buf_lock);
> + if ((adata->multiread_bit == true) && (len > 1))
> + adata->tx_buf[0] = reg_addr | ST_SENSORS_SPI_MULTIREAD;
> + else
> + adata->tx_buf[0] = reg_addr | ST_SENSORS_SPI_READ;
> +
> + spi_message_init(&msg);
> + spi_message_add_tail(&xfers[0], &msg);
> + spi_message_add_tail(&xfers[1], &msg);
> + err = spi_sync(to_spi_device(adata->dev), &msg);
> + if (err)
> + goto acc_spi_read_error;
> +
> + memcpy(data, adata->rx_buf, len*sizeof(u8));
> + mutex_unlock(&adata->buf_lock);
> + return len;
> +
> +acc_spi_read_error:
> + return err;
> +}
> +
> +static int st_sensors_spi_read_byte(struct st_sensors_data *adata,
> + u8 reg_addr, u8 *res_byte)
> +{
> + return st_sensors_spi_read(adata, reg_addr, 1, res_byte);
> +}
> +
> +static int st_sensors_spi_read_multiple_byte(struct st_sensors_data *adata,
> + u8 reg_addr, int len, u8 *data)
> +{
> + return st_sensors_spi_read(adata, reg_addr, len, data);
> +}
> +
> +static int st_sensors_spi_write_byte(struct st_sensors_data *adata,
> + u8 reg_addr, u8 data)
> +{
> + struct spi_message msg;
> + int err;
> +
> + struct spi_transfer xfers = {
> + .tx_buf = adata->tx_buf,
> + .bits_per_word = 8,
> + .len = 2,
> + };
> +
> + mutex_lock(&adata->buf_lock);
> + adata->tx_buf[0] = reg_addr;
> + adata->tx_buf[1] = data;
> +
> + spi_message_init(&msg);
> + spi_message_add_tail(&xfers, &msg);
> + err = spi_sync(to_spi_device(adata->dev), &msg);
> + mutex_unlock(&adata->buf_lock);
> +
> + return err;
> +}
> +
> +static int __devinit st_sensors_spi_probe(struct spi_device *spi)
> +{
> + struct iio_dev *indio_dev;
> + struct st_sensors_data *adata;
> + int err;
> +
> + indio_dev = iio_device_alloc(sizeof(*adata));
> + if (indio_dev == NULL) {
> + err = -ENOMEM;
> + goto iio_device_alloc_error;
> + }
> +
> + adata = iio_priv(indio_dev);
> + adata->dev = &spi->dev;
> + spi_set_drvdata(spi, indio_dev);
> +
> + indio_dev->dev.parent = &spi->dev;
> + indio_dev->name = spi->modalias;
> +
> + mutex_init(&adata->buf_lock);
> + adata->read_byte = st_sensors_spi_read_byte;
> + adata->write_byte = st_sensors_spi_write_byte;
> + adata->read_multiple_byte = st_sensors_spi_read_multiple_byte;
> +
> + err = st_sensors_iio_probe(indio_dev, spi->irq);
> + if (err < 0)
> + goto acc_iio_default_error;
> +
> + return 0;
> +
> +acc_iio_default_error:
> + iio_device_free(indio_dev);
> +iio_device_alloc_error:
> + return err;
> +}
> +
> +static int st_sensors_spi_remove(struct spi_device *spi)
> +{
> + struct iio_dev *indio_dev = spi_get_drvdata(spi);
> + st_sensors_iio_remove(indio_dev, spi->irq);
> +
> + return 0;
> +}
> +
> +static const struct spi_device_id st_sensors_id_table[] = {
> + { LSM303DLH_ACCEL_DEV_NAME },
> + { LSM303DLHC_ACCEL_DEV_NAME },
> + { LIS3DH_ACCEL_DEV_NAME },
> + { LSM330D_ACCEL_DEV_NAME },
> + { LSM330DL_ACCEL_DEV_NAME },
> + { LSM330DLC_ACCEL_DEV_NAME },
> + { LSM303D_ACCEL_DEV_NAME },
> + { LSM9DS0_ACCEL_DEV_NAME },
> + { LIS331DLH_ACCEL_DEV_NAME },
> + { LSM303DL_ACCEL_DEV_NAME },
> + { LSM303DLM_ACCEL_DEV_NAME },
> + { LSM330_ACCEL_DEV_NAME },
> + { L3G4200D_GYRO_DEV_NAME },
> + { LSM330DL_GYRO_DEV_NAME },
> + { L3GD20_GYRO_DEV_NAME },
> + { L3GD20H_GYRO_DEV_NAME },
> + { LSM330D_GYRO_DEV_NAME },
> + { LSM330DLC_GYRO_DEV_NAME },
> + { LSM9DS0_GYRO_DEV_NAME },
> + { L3G4IS_GYRO_DEV_NAME },
> + { LSM330_GYRO_DEV_NAME },
> + {},
> +};
> +MODULE_DEVICE_TABLE(spi, st_sensors_id_table);
> +
> +static struct spi_driver st_sensors_driver = {
> + .driver = {
> + .owner = THIS_MODULE,
> + .name = "st-sensors-spi",
> + },
> + .probe = st_sensors_spi_probe,
> + .remove = st_sensors_spi_remove,
> + .id_table = st_sensors_id_table,
> +};
> +module_spi_driver(st_sensors_driver);
> +
> +MODULE_AUTHOR("Denis Ciocca <denis.ciocca@xxxxxx>");
> +MODULE_DESCRIPTION("STMicroelectronics sensors spi driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/iio/common/st-sensors/st_sensors_trigger.c
> b/drivers/iio/common/st-sensors/st_sensors_trigger.c
> new file mode 100644
> index 0000000..37dadc2
> --- /dev/null
> +++ b/drivers/iio/common/st-sensors/st_sensors_trigger.c
> @@ -0,0 +1,83 @@
> +/*
> + * STMicroelectronics sensors driver
> + *
> + * Copyright 2012 STMicroelectronics Inc.
> + *
> + * Denis Ciocca <denis.ciocca@xxxxxx>
> + *
> + * Licensed under the GPL-2.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/slab.h>
> +#include <linux/stat.h>
> +#include <linux/interrupt.h>
> +#include <linux/i2c.h>
> +#include <linux/iio/iio.h>
> +#include <linux/iio/trigger.h>
> +
> +#include "st_sensors.h"
> +
> +static int st_sensors_trig_acc_set_state(struct iio_trigger *trig, bool
> state)
> +{
> + struct iio_dev *indio_dev = trig->private_data;
> + return st_sensors_set_dataready_irq(indio_dev, state);
> +}
> +
> +static const struct iio_trigger_ops st_sensors_trigger_ops = {
> + .owner = THIS_MODULE,
> + .set_trigger_state = &st_sensors_trig_acc_set_state,
> +};
> +
> +int st_sensors_probe_trigger(struct iio_dev *indio_dev, int irq)
> +{
> + int err;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + adata->trig = iio_trigger_alloc("%s-trigger", indio_dev->name);
> + if (adata->trig == NULL) {
> + err = -ENOMEM;
> + dev_err(&indio_dev->dev, "failed to allocate iio trigger.\n");
> + goto iio_trigger_alloc_error;
> + }
> +
> + err = request_threaded_irq(irq,
> + iio_trigger_generic_data_rdy_poll,
> + NULL,
> + IRQF_TRIGGER_RISING,
> + adata->trig->name,
> + adata->trig);
> + if (err)
> + goto request_irq_error;
> +
> + adata->trig->private_data = indio_dev;
> + adata->trig->ops = &st_sensors_trigger_ops;
> + adata->trig->dev.parent = adata->dev;
> +
> + err = iio_trigger_register(adata->trig);
> + if (err < 0) {
> + dev_err(&indio_dev->dev, "failed to register iio trigger.\n");
> + goto iio_trigger_register_error;
> + }
> + indio_dev->trig = adata->trig;
> +
> + return 0;
> +
> +iio_trigger_register_error:
> + free_irq(irq, adata->trig);
> +request_irq_error:
> + iio_trigger_free(adata->trig);
> +iio_trigger_alloc_error:
> + return err;
> +}
> +EXPORT_SYMBOL(st_sensors_probe_trigger);
> +
> +void st_sensors_remove_trigger(struct iio_dev *indio_dev, int irq)
> +{
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + iio_trigger_unregister(adata->trig);
> + free_irq(irq, adata->trig);
> + iio_trigger_free(adata->trig);
> +}
> +EXPORT_SYMBOL(st_sensors_remove_trigger);
> diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig
> index 21e27e2..3e8b746 100644
> --- a/drivers/iio/gyro/Kconfig
> +++ b/drivers/iio/gyro/Kconfig
> @@ -13,4 +13,18 @@ config HID_SENSOR_GYRO_3D
> Say yes here to build support for the HID SENSOR
> Gyroscope 3D.
>
> +config ST_GYRO_3D
> + tristate "STMicroelectronics gyroscopes 3-Axis Driver"
> + depends on (I2C || SPI_MASTER) && SYSFS
> + select IIO_BUFFER
> + select IIO_TRIGGERED_BUFFER
> + select ST_SENSORS_IIO_COMMON
> + help
> + Say yes here to build support for STMicroelectronics gyroscopes:
> + L3G4200D, LSM330DL, L3GD20, L3GD20H, LSM330D, LSM330DL, LSM330DLC,
> + LSM9DS0, L3G4IS, LSM330.
> +
> + This driver can also be built as a module. If so, the module
> + will be called st_gyro.
> +
> endmenu
> diff --git a/drivers/iio/gyro/Makefile b/drivers/iio/gyro/Makefile
> index 8a895d9..6a0a0d1 100644
> --- a/drivers/iio/gyro/Makefile
> +++ b/drivers/iio/gyro/Makefile
> @@ -3,3 +3,4 @@
> #
>
> obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o
> +obj-$(CONFIG_ST_GYRO_3D) += st_gyro.o
> diff --git a/drivers/iio/gyro/st_gyro.c b/drivers/iio/gyro/st_gyro.c
> new file mode 100644
> index 0000000..a483f19
> --- /dev/null
> +++ b/drivers/iio/gyro/st_gyro.c
> @@ -0,0 +1,252 @@
> +/*
> + * STMicroelectronics gyroscopes driver
> + *
> + * Copyright 2012 STMicroelectronics Inc.
> + *
> + * Denis Ciocca <denis.ciocca@xxxxxx>
> + *
> + * Licensed under the GPL-2.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/slab.h>
> +#include <linux/errno.h>
> +#include <linux/types.h>
> +#include <linux/mutex.h>
> +#include <linux/interrupt.h>
> +#include <linux/i2c.h>
> +#include <linux/gpio.h>
> +#include <linux/irq.h>
> +#include <linux/iio/iio.h>
> +#include <linux/iio/sysfs.h>
> +#include <linux/iio/trigger_consumer.h>
> +#include <linux/iio/buffer.h>
> +
> +#include "../common/st-sensors/st_sensors.h"
> +
> +
> +/* FULLSCALE */
> +#define ST_GYRO_FS_AVL_250DPS 250
> +#define ST_GYRO_FS_AVL_500DPS 500
> +#define ST_GYRO_FS_AVL_2000DPS 2000
> +
> +/* CUSTOM VALUES FOR SENSOR 1 */
> +#define ST_GYRO_1_WAI_EXP 0xd3
> +#define ST_GYRO_1_ODR_ADDR 0x20
> +#define ST_GYRO_1_ODR_MASK 0xc0
> +#define ST_GYRO_1_ODR_N_BIT 2
> +#define ST_GYRO_1_ODR_AVL_100HZ_VAL 0x00
> +#define ST_GYRO_1_ODR_AVL_200HZ_VAL 0x01
> +#define ST_GYRO_1_ODR_AVL_400HZ_VAL 0x02
> +#define ST_GYRO_1_ODR_AVL_800HZ_VAL 0x03
> +#define ST_GYRO_1_PW_ADDR 0x20
> +#define ST_GYRO_1_PW_MASK 0x08
> +#define ST_GYRO_1_PW_N_BIT 1
> +#define ST_GYRO_1_FS_N_BIT 2
> +#define ST_GYRO_1_FS_ADDR 0x23
> +#define ST_GYRO_1_FS_MASK 0x30
> +#define ST_GYRO_1_FS_AVL_250_VAL 0x00
> +#define ST_GYRO_1_FS_AVL_500_VAL 0x01
> +#define ST_GYRO_1_FS_AVL_2000_VAL 0x02
> +#define ST_GYRO_1_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750)
> +#define ST_GYRO_1_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500)
> +#define ST_GYRO_1_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000)
> +#define ST_GYRO_1_BDU_ADDR 0x23
> +#define ST_GYRO_1_BDU_MASK 0x80
> +#define ST_GYRO_1_DRDY_IRQ_ADDR 0x22
> +#define ST_GYRO_1_DRDY_IRQ_MASK 0x08
> +#define ST_GYRO_1_MULTIREAD_BIT true
> +
> +/* CUSTOM VALUES FOR SENSOR 2 */
> +#define ST_GYRO_2_WAI_EXP 0xd4
> +#define ST_GYRO_2_ODR_ADDR 0x20
> +#define ST_GYRO_2_ODR_MASK 0xc0
> +#define ST_GYRO_2_ODR_N_BIT 2
> +#define ST_GYRO_2_ODR_AVL_95HZ_VAL 0x00
> +#define ST_GYRO_2_ODR_AVL_190HZ_VAL 0x01
> +#define ST_GYRO_2_ODR_AVL_380HZ_VAL 0x02
> +#define ST_GYRO_2_ODR_AVL_760HZ_VAL 0x03
> +#define ST_GYRO_2_PW_ADDR 0x20
> +#define ST_GYRO_2_PW_MASK 0x08
> +#define ST_GYRO_2_PW_N_BIT 1
> +#define ST_GYRO_2_FS_N_BIT 2
> +#define ST_GYRO_2_FS_ADDR 0x23
> +#define ST_GYRO_2_FS_MASK 0x30
> +#define ST_GYRO_2_FS_AVL_250_VAL 0x00
> +#define ST_GYRO_2_FS_AVL_500_VAL 0x01
> +#define ST_GYRO_2_FS_AVL_2000_VAL 0x02
> +#define ST_GYRO_2_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750)
> +#define ST_GYRO_2_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500)
> +#define ST_GYRO_2_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000)
> +#define ST_GYRO_2_BDU_ADDR 0x23
> +#define ST_GYRO_2_BDU_MASK 0x80
> +#define ST_GYRO_2_DRDY_IRQ_ADDR 0x22
> +#define ST_GYRO_2_DRDY_IRQ_MASK 0x08
> +#define ST_GYRO_2_MULTIREAD_BIT true
> +
> +const struct iio_chan_spec st_gyro_16bit_channels[] = {
> + ST_LSM_CHANNELS(IIO_ANGL_VEL, ST_SENSORS_SCAN_X, IIO_MOD_X, IIO_LE,
> + ST_SENSORS_DEF_16_REALBITS, ST_SENSORS_DEF_OUT_X_L_ADDR),
> + ST_LSM_CHANNELS(IIO_ANGL_VEL, ST_SENSORS_SCAN_Y, IIO_MOD_Y, IIO_LE,
> + ST_SENSORS_DEF_16_REALBITS, ST_SENSORS_DEF_OUT_Y_L_ADDR),
> + ST_LSM_CHANNELS(IIO_ANGL_VEL, ST_SENSORS_SCAN_Z, IIO_MOD_Z, IIO_LE,
> + ST_SENSORS_DEF_16_REALBITS, ST_SENSORS_DEF_OUT_Z_L_ADDR),
> + IIO_CHAN_SOFT_TIMESTAMP(3)
> +};
> +
> +const struct st_sensors st_gyro_sensors[] = {
> + {
> + .wai = ST_GYRO_1_WAI_EXP,
> + .ch = (struct iio_chan_spec *)st_gyro_16bit_channels,
> + .odr = {
> + .addr = ST_GYRO_1_ODR_ADDR,
> + .mask = ST_GYRO_1_ODR_MASK,
> + .num_bit = ST_GYRO_1_ODR_N_BIT,
> + .odr_avl = {
> + { 100, ST_GYRO_1_ODR_AVL_100HZ_VAL, },
> + { 200, ST_GYRO_1_ODR_AVL_200HZ_VAL, },
> + { 400, ST_GYRO_1_ODR_AVL_400HZ_VAL, },
> + { 800, ST_GYRO_1_ODR_AVL_800HZ_VAL, },
> + },
> + },
> + .pw = {
> + .addr = ST_GYRO_1_PW_ADDR,
> + .mask = ST_GYRO_1_PW_MASK,
> + .num_bit = ST_GYRO_1_PW_N_BIT,
> + .value_on = ST_SENSORS_DEF_POWER_ON_VALUE,
> + .value_off = ST_SENSORS_DEF_POWER_OFF_VALUE,
> + },
> + .enable_axis = {
> + .addr = ST_SENSORS_DEF_AXIS_ADDR,
> + .mask = ST_SENSORS_DEF_AXIS_MASK,
> + },
> + .fs = {
> + .addr = ST_GYRO_1_FS_ADDR,
> + .mask = ST_GYRO_1_FS_MASK,
> + .num_bit = ST_GYRO_1_FS_N_BIT,
> + .fs_avl = {
> + [0] = {
> + .num = ST_GYRO_FS_AVL_250DPS,
> + .value = ST_GYRO_1_FS_AVL_250_VAL,
> + .gain = ST_GYRO_1_FS_AVL_250_GAIN,
> + },
> + [1] = {
> + .num = ST_GYRO_FS_AVL_500DPS,
> + .value = ST_GYRO_1_FS_AVL_500_VAL,
> + .gain = ST_GYRO_1_FS_AVL_500_GAIN,
> + },
> + [2] = {
> + .num = ST_GYRO_FS_AVL_2000DPS,
> + .value = ST_GYRO_1_FS_AVL_2000_VAL,
> + .gain = ST_GYRO_1_FS_AVL_2000_GAIN,
> + },
> + },
> + },
> + .bdu = {
> + .addr = ST_GYRO_1_BDU_ADDR,
> + .mask = ST_GYRO_1_BDU_MASK,
> + },
> + .drdy_irq = {
> + .addr = ST_GYRO_1_DRDY_IRQ_ADDR,
> + .mask = ST_GYRO_1_DRDY_IRQ_MASK,
> + },
> + .multi_read_bit = ST_GYRO_1_MULTIREAD_BIT,
> + },
> + {
> + .wai = ST_GYRO_2_WAI_EXP,
> + .ch = (struct iio_chan_spec *)st_gyro_16bit_channels,
> + .odr = {
> + .addr = ST_GYRO_2_ODR_ADDR,
> + .mask = ST_GYRO_2_ODR_MASK,
> + .num_bit = ST_GYRO_2_ODR_N_BIT,
> + .odr_avl = {
> + { 95, ST_GYRO_2_ODR_AVL_95HZ_VAL, },
> + { 190, ST_GYRO_2_ODR_AVL_190HZ_VAL, },
> + { 380, ST_GYRO_2_ODR_AVL_380HZ_VAL, },
> + { 760, ST_GYRO_2_ODR_AVL_760HZ_VAL, },
> + },
> + },
> + .pw = {
> + .addr = ST_GYRO_2_PW_ADDR,
> + .mask = ST_GYRO_2_PW_MASK,
> + .num_bit = ST_GYRO_2_PW_N_BIT,
> + .value_on = ST_SENSORS_DEF_POWER_ON_VALUE,
> + .value_off = ST_SENSORS_DEF_POWER_OFF_VALUE,
> + },
> + .enable_axis = {
> + .addr = ST_SENSORS_DEF_AXIS_ADDR,
> + .mask = ST_SENSORS_DEF_AXIS_MASK,
> + },
> + .fs = {
> + .addr = ST_GYRO_2_FS_ADDR,
> + .mask = ST_GYRO_2_FS_MASK,
> + .num_bit = ST_GYRO_2_FS_N_BIT,
> + .fs_avl = {
> + [0] = {
> + .num = ST_GYRO_FS_AVL_250DPS,
> + .value = ST_GYRO_2_FS_AVL_250_VAL,
> + .gain = ST_GYRO_2_FS_AVL_250_GAIN,
> + },
> + [1] = {
> + .num = ST_GYRO_FS_AVL_500DPS,
> + .value = ST_GYRO_2_FS_AVL_500_VAL,
> + .gain = ST_GYRO_2_FS_AVL_500_GAIN,
> + },
> + [2] = {
> + .num = ST_GYRO_FS_AVL_2000DPS,
> + .value = ST_GYRO_2_FS_AVL_2000_VAL,
> + .gain = ST_GYRO_2_FS_AVL_2000_GAIN,
> + },
> + },
> + },
> + .bdu = {
> + .addr = ST_GYRO_2_BDU_ADDR,
> + .mask = ST_GYRO_2_BDU_MASK,
> + },
> + .drdy_irq = {
> + .addr = ST_GYRO_2_DRDY_IRQ_ADDR,
> + .mask = ST_GYRO_2_DRDY_IRQ_MASK,
> + },
> + .multi_read_bit = ST_GYRO_2_MULTIREAD_BIT,
> + },
> +};
> +
> +static int st_gyro_check_device_list(struct st_sensors_data *adata, u8 wai)
> +{
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(st_gyro_sensors); i++) {
> + if (st_gyro_sensors[i].wai == wai)
> + break;
> + }
> + if (i == ARRAY_SIZE(st_gyro_sensors))
> + goto check_device_error;
> +
> + adata->index = i;
> +
> + return i;
> +
> +check_device_error:
> + return -ENODEV;
> +}
> +
> +int st_gyro_init_sensor(struct iio_dev *indio_dev, u8 wai)
> +{
> + int err;
> + struct st_sensors_data *adata = iio_priv(indio_dev);
> +
> + err = st_gyro_check_device_list(adata, wai);
> + if (err < 0)
> + goto init_error;
> +
> + adata->st_sensors = (const struct st_sensors *)st_gyro_sensors;
> +
> +init_error:
> + return err;
> +}
> +EXPORT_SYMBOL(st_gyro_init_sensor);
> +
> +MODULE_AUTHOR("Denis Ciocca <denis.ciocca@xxxxxx>");
> +MODULE_DESCRIPTION("STMicroelectronics gyroscopes driver");
> +MODULE_LICENSE("GPL v2");
> --
> 1.7.0.4
>
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