cregit-Linux how code gets into the kernel

Release 4.8 drivers/iio/magnetometer/st_magn_core.c

/*
 * STMicroelectronics magnetometers driver
 *
 * Copyright 2012-2013 STMicroelectronics Inc.
 *
 * Denis Ciocca <denis.ciocca@st.com>
 *
 * 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/delay.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>

#include <linux/iio/common/st_sensors.h>
#include "st_magn.h"


#define ST_MAGN_NUMBER_DATA_CHANNELS		3

/* DEFAULT VALUE FOR SENSORS */

#define ST_MAGN_DEFAULT_OUT_X_H_ADDR		0X03

#define ST_MAGN_DEFAULT_OUT_Y_H_ADDR		0X07

#define ST_MAGN_DEFAULT_OUT_Z_H_ADDR		0X05

/* FULLSCALE */

#define ST_MAGN_FS_AVL_1300MG			1300

#define ST_MAGN_FS_AVL_1900MG			1900

#define ST_MAGN_FS_AVL_2500MG			2500

#define ST_MAGN_FS_AVL_4000MG			4000

#define ST_MAGN_FS_AVL_4700MG			4700

#define ST_MAGN_FS_AVL_5600MG			5600

#define ST_MAGN_FS_AVL_8000MG			8000

#define ST_MAGN_FS_AVL_8100MG			8100

#define ST_MAGN_FS_AVL_12000MG			12000

#define ST_MAGN_FS_AVL_15000MG			15000

#define ST_MAGN_FS_AVL_16000MG			16000

/* CUSTOM VALUES FOR SENSOR 0 */

#define ST_MAGN_0_ODR_ADDR			0x00

#define ST_MAGN_0_ODR_MASK			0x1c

#define ST_MAGN_0_ODR_AVL_1HZ_VAL		0x00

#define ST_MAGN_0_ODR_AVL_2HZ_VAL		0x01

#define ST_MAGN_0_ODR_AVL_3HZ_VAL		0x02

#define ST_MAGN_0_ODR_AVL_8HZ_VAL		0x03

#define ST_MAGN_0_ODR_AVL_15HZ_VAL		0x04

#define ST_MAGN_0_ODR_AVL_30HZ_VAL		0x05

#define ST_MAGN_0_ODR_AVL_75HZ_VAL		0x06

#define ST_MAGN_0_ODR_AVL_220HZ_VAL		0x07

#define ST_MAGN_0_PW_ADDR			0x02

#define ST_MAGN_0_PW_MASK			0x03

#define ST_MAGN_0_PW_ON				0x00

#define ST_MAGN_0_PW_OFF			0x03

#define ST_MAGN_0_FS_ADDR			0x01

#define ST_MAGN_0_FS_MASK			0xe0

#define ST_MAGN_0_FS_AVL_1300_VAL		0x01

#define ST_MAGN_0_FS_AVL_1900_VAL		0x02

#define ST_MAGN_0_FS_AVL_2500_VAL		0x03

#define ST_MAGN_0_FS_AVL_4000_VAL		0x04

#define ST_MAGN_0_FS_AVL_4700_VAL		0x05

#define ST_MAGN_0_FS_AVL_5600_VAL		0x06

#define ST_MAGN_0_FS_AVL_8100_VAL		0x07

#define ST_MAGN_0_FS_AVL_1300_GAIN_XY		1100

#define ST_MAGN_0_FS_AVL_1900_GAIN_XY		855

#define ST_MAGN_0_FS_AVL_2500_GAIN_XY		670

#define ST_MAGN_0_FS_AVL_4000_GAIN_XY		450

#define ST_MAGN_0_FS_AVL_4700_GAIN_XY		400

#define ST_MAGN_0_FS_AVL_5600_GAIN_XY		330

#define ST_MAGN_0_FS_AVL_8100_GAIN_XY		230

#define ST_MAGN_0_FS_AVL_1300_GAIN_Z		980

#define ST_MAGN_0_FS_AVL_1900_GAIN_Z		760

#define ST_MAGN_0_FS_AVL_2500_GAIN_Z		600

#define ST_MAGN_0_FS_AVL_4000_GAIN_Z		400

#define ST_MAGN_0_FS_AVL_4700_GAIN_Z		355

#define ST_MAGN_0_FS_AVL_5600_GAIN_Z		295

#define ST_MAGN_0_FS_AVL_8100_GAIN_Z		205

#define ST_MAGN_0_MULTIREAD_BIT			false

/* CUSTOM VALUES FOR SENSOR 1 */

#define ST_MAGN_1_WAI_EXP			0x3c

#define ST_MAGN_1_ODR_ADDR			0x00

#define ST_MAGN_1_ODR_MASK			0x1c

#define ST_MAGN_1_ODR_AVL_1HZ_VAL		0x00

#define ST_MAGN_1_ODR_AVL_2HZ_VAL		0x01

#define ST_MAGN_1_ODR_AVL_3HZ_VAL		0x02

#define ST_MAGN_1_ODR_AVL_8HZ_VAL		0x03

#define ST_MAGN_1_ODR_AVL_15HZ_VAL		0x04

#define ST_MAGN_1_ODR_AVL_30HZ_VAL		0x05

#define ST_MAGN_1_ODR_AVL_75HZ_VAL		0x06

#define ST_MAGN_1_ODR_AVL_220HZ_VAL		0x07

#define ST_MAGN_1_PW_ADDR			0x02

#define ST_MAGN_1_PW_MASK			0x03

#define ST_MAGN_1_PW_ON				0x00

#define ST_MAGN_1_PW_OFF			0x03

#define ST_MAGN_1_FS_ADDR			0x01

#define ST_MAGN_1_FS_MASK			0xe0

#define ST_MAGN_1_FS_AVL_1300_VAL		0x01

#define ST_MAGN_1_FS_AVL_1900_VAL		0x02

#define ST_MAGN_1_FS_AVL_2500_VAL		0x03

#define ST_MAGN_1_FS_AVL_4000_VAL		0x04

#define ST_MAGN_1_FS_AVL_4700_VAL		0x05

#define ST_MAGN_1_FS_AVL_5600_VAL		0x06

#define ST_MAGN_1_FS_AVL_8100_VAL		0x07

#define ST_MAGN_1_FS_AVL_1300_GAIN_XY		909

#define ST_MAGN_1_FS_AVL_1900_GAIN_XY		1169

#define ST_MAGN_1_FS_AVL_2500_GAIN_XY		1492

#define ST_MAGN_1_FS_AVL_4000_GAIN_XY		2222

#define ST_MAGN_1_FS_AVL_4700_GAIN_XY		2500

#define ST_MAGN_1_FS_AVL_5600_GAIN_XY		3030

#define ST_MAGN_1_FS_AVL_8100_GAIN_XY		4347

#define ST_MAGN_1_FS_AVL_1300_GAIN_Z		1020

#define ST_MAGN_1_FS_AVL_1900_GAIN_Z		1315

#define ST_MAGN_1_FS_AVL_2500_GAIN_Z		1666

#define ST_MAGN_1_FS_AVL_4000_GAIN_Z		2500

#define ST_MAGN_1_FS_AVL_4700_GAIN_Z		2816

#define ST_MAGN_1_FS_AVL_5600_GAIN_Z		3389

#define ST_MAGN_1_FS_AVL_8100_GAIN_Z		4878

#define ST_MAGN_1_MULTIREAD_BIT			false

/* CUSTOM VALUES FOR SENSOR 2 */

#define ST_MAGN_2_WAI_EXP			0x3d

#define ST_MAGN_2_ODR_ADDR			0x20

#define ST_MAGN_2_ODR_MASK			0x1c

#define ST_MAGN_2_ODR_AVL_1HZ_VAL		0x00

#define ST_MAGN_2_ODR_AVL_2HZ_VAL		0x01

#define ST_MAGN_2_ODR_AVL_3HZ_VAL		0x02

#define ST_MAGN_2_ODR_AVL_5HZ_VAL		0x03

#define ST_MAGN_2_ODR_AVL_10HZ_VAL		0x04

#define ST_MAGN_2_ODR_AVL_20HZ_VAL		0x05

#define ST_MAGN_2_ODR_AVL_40HZ_VAL		0x06

#define ST_MAGN_2_ODR_AVL_80HZ_VAL		0x07

#define ST_MAGN_2_PW_ADDR			0x22

#define ST_MAGN_2_PW_MASK			0x03

#define ST_MAGN_2_PW_ON				0x00

#define ST_MAGN_2_PW_OFF			0x03

#define ST_MAGN_2_FS_ADDR			0x21

#define ST_MAGN_2_FS_MASK			0x60

#define ST_MAGN_2_FS_AVL_4000_VAL		0x00

#define ST_MAGN_2_FS_AVL_8000_VAL		0x01

#define ST_MAGN_2_FS_AVL_12000_VAL		0x02

#define ST_MAGN_2_FS_AVL_16000_VAL		0x03

#define ST_MAGN_2_FS_AVL_4000_GAIN		146

#define ST_MAGN_2_FS_AVL_8000_GAIN		292

#define ST_MAGN_2_FS_AVL_12000_GAIN		438

#define ST_MAGN_2_FS_AVL_16000_GAIN		584

#define ST_MAGN_2_MULTIREAD_BIT			false

#define ST_MAGN_2_OUT_X_L_ADDR			0x28

#define ST_MAGN_2_OUT_Y_L_ADDR			0x2a

#define ST_MAGN_2_OUT_Z_L_ADDR			0x2c

/* CUSTOM VALUES FOR SENSOR 3 */

#define ST_MAGN_3_WAI_ADDR			0x4f

#define ST_MAGN_3_WAI_EXP			0x40

#define ST_MAGN_3_ODR_ADDR			0x60

#define ST_MAGN_3_ODR_MASK			0x0c

#define ST_MAGN_3_ODR_AVL_10HZ_VAL		0x00

#define ST_MAGN_3_ODR_AVL_20HZ_VAL		0x01

#define ST_MAGN_3_ODR_AVL_50HZ_VAL		0x02

#define ST_MAGN_3_ODR_AVL_100HZ_VAL		0x03

#define ST_MAGN_3_PW_ADDR			0x60

#define ST_MAGN_3_PW_MASK			0x03

#define ST_MAGN_3_PW_ON				0x00

#define ST_MAGN_3_PW_OFF			0x03

#define ST_MAGN_3_BDU_ADDR			0x62

#define ST_MAGN_3_BDU_MASK			0x10

#define ST_MAGN_3_DRDY_IRQ_ADDR			0x62

#define ST_MAGN_3_DRDY_INT_MASK			0x01

#define ST_MAGN_3_IHL_IRQ_ADDR			0x63

#define ST_MAGN_3_IHL_IRQ_MASK			0x04

#define ST_MAGN_3_FS_AVL_15000_GAIN		1500

#define ST_MAGN_3_MULTIREAD_BIT			false

#define ST_MAGN_3_OUT_X_L_ADDR			0x68

#define ST_MAGN_3_OUT_Y_L_ADDR			0x6a

#define ST_MAGN_3_OUT_Z_L_ADDR			0x6c


static const struct iio_chan_spec st_magn_16bit_channels[] = {
	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_BE, 16, 16,
			ST_MAGN_DEFAULT_OUT_X_H_ADDR),
	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_BE, 16, 16,
			ST_MAGN_DEFAULT_OUT_Y_H_ADDR),
	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_BE, 16, 16,
			ST_MAGN_DEFAULT_OUT_Z_H_ADDR),
	IIO_CHAN_SOFT_TIMESTAMP(3)
};


static const struct iio_chan_spec st_magn_2_16bit_channels[] = {
	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
			ST_MAGN_2_OUT_X_L_ADDR),
	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
			ST_MAGN_2_OUT_Y_L_ADDR),
	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
			ST_MAGN_2_OUT_Z_L_ADDR),
	IIO_CHAN_SOFT_TIMESTAMP(3)
};


static const struct iio_chan_spec st_magn_3_16bit_channels[] = {
	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
			ST_MAGN_3_OUT_X_L_ADDR),
	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
			ST_MAGN_3_OUT_Y_L_ADDR),
	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
			ST_MAGN_3_OUT_Z_L_ADDR),
	IIO_CHAN_SOFT_TIMESTAMP(3)
};


static const struct st_sensor_settings st_magn_sensors_settings[] = {
	{
		.wai = 0, /* This sensor has no valid WhoAmI report 0 */
		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
		.sensors_supported = {
			[0] = LSM303DLH_MAGN_DEV_NAME,
                },
		.ch = (struct iio_chan_spec *)st_magn_16bit_channels,
		.odr = {
			.addr = ST_MAGN_0_ODR_ADDR,
			.mask = ST_MAGN_0_ODR_MASK,
			.odr_avl = {
				{ 1, ST_MAGN_0_ODR_AVL_1HZ_VAL, },
				{ 2, ST_MAGN_0_ODR_AVL_2HZ_VAL, },
				{ 3, ST_MAGN_0_ODR_AVL_3HZ_VAL, },
				{ 8, ST_MAGN_0_ODR_AVL_8HZ_VAL, },
				{ 15, ST_MAGN_0_ODR_AVL_15HZ_VAL, },
				{ 30, ST_MAGN_0_ODR_AVL_30HZ_VAL, },
				{ 75, ST_MAGN_0_ODR_AVL_75HZ_VAL, },
                        },
                },
		.pw = {
			.addr = ST_MAGN_0_PW_ADDR,
			.mask = ST_MAGN_0_PW_MASK,
			.value_on = ST_MAGN_0_PW_ON,
			.value_off = ST_MAGN_0_PW_OFF,
                },
		.fs = {
			.addr = ST_MAGN_0_FS_ADDR,
			.mask = ST_MAGN_0_FS_MASK,
			.fs_avl = {
				[0] = {
					.num = ST_MAGN_FS_AVL_1300MG,
					.value = ST_MAGN_0_FS_AVL_1300_VAL,
					.gain = ST_MAGN_0_FS_AVL_1300_GAIN_XY,
					.gain2 = ST_MAGN_0_FS_AVL_1300_GAIN_Z,
                                },
				[1] = {
					.num = ST_MAGN_FS_AVL_1900MG,
					.value = ST_MAGN_0_FS_AVL_1900_VAL,
					.gain = ST_MAGN_0_FS_AVL_1900_GAIN_XY,
					.gain2 = ST_MAGN_0_FS_AVL_1900_GAIN_Z,
                                },
				[2] = {
					.num = ST_MAGN_FS_AVL_2500MG,
					.value = ST_MAGN_0_FS_AVL_2500_VAL,
					.gain = ST_MAGN_0_FS_AVL_2500_GAIN_XY,
					.gain2 = ST_MAGN_0_FS_AVL_2500_GAIN_Z,
                                },
				[3] = {
					.num = ST_MAGN_FS_AVL_4000MG,
					.value = ST_MAGN_0_FS_AVL_4000_VAL,
					.gain = ST_MAGN_0_FS_AVL_4000_GAIN_XY,
					.gain2 = ST_MAGN_0_FS_AVL_4000_GAIN_Z,
                                },
				[4] = {
					.num = ST_MAGN_FS_AVL_4700MG,
					.value = ST_MAGN_0_FS_AVL_4700_VAL,
					.gain = ST_MAGN_0_FS_AVL_4700_GAIN_XY,
					.gain2 = ST_MAGN_0_FS_AVL_4700_GAIN_Z,
                                },
				[5] = {
					.num = ST_MAGN_FS_AVL_5600MG,
					.value = ST_MAGN_0_FS_AVL_5600_VAL,
					.gain = ST_MAGN_0_FS_AVL_5600_GAIN_XY,
					.gain2 = ST_MAGN_0_FS_AVL_5600_GAIN_Z,
                                },
				[6] = {
					.num = ST_MAGN_FS_AVL_8100MG,
					.value = ST_MAGN_0_FS_AVL_8100_VAL,
					.gain = ST_MAGN_0_FS_AVL_8100_GAIN_XY,
					.gain2 = ST_MAGN_0_FS_AVL_8100_GAIN_Z,
                                },
                        },
                },
		.multi_read_bit = ST_MAGN_0_MULTIREAD_BIT,
		.bootime = 2,
        },
	{
		.wai = ST_MAGN_1_WAI_EXP,
		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
		.sensors_supported = {
			[0] = LSM303DLHC_MAGN_DEV_NAME,
			[1] = LSM303DLM_MAGN_DEV_NAME,
                },
		.ch = (struct iio_chan_spec *)st_magn_16bit_channels,
		.odr = {
			.addr = ST_MAGN_1_ODR_ADDR,
			.mask = ST_MAGN_1_ODR_MASK,
			.odr_avl = {
				{ 1, ST_MAGN_1_ODR_AVL_1HZ_VAL, },
				{ 2, ST_MAGN_1_ODR_AVL_2HZ_VAL, },
				{ 3, ST_MAGN_1_ODR_AVL_3HZ_VAL, },
				{ 8, ST_MAGN_1_ODR_AVL_8HZ_VAL, },
				{ 15, ST_MAGN_1_ODR_AVL_15HZ_VAL, },
				{ 30, ST_MAGN_1_ODR_AVL_30HZ_VAL, },
				{ 75, ST_MAGN_1_ODR_AVL_75HZ_VAL, },
				{ 220, ST_MAGN_1_ODR_AVL_220HZ_VAL, },
                        },
                },
		.pw = {
			.addr = ST_MAGN_1_PW_ADDR,
			.mask = ST_MAGN_1_PW_MASK,
			.value_on = ST_MAGN_1_PW_ON,
			.value_off = ST_MAGN_1_PW_OFF,
                },
		.fs = {
			.addr = ST_MAGN_1_FS_ADDR,
			.mask = ST_MAGN_1_FS_MASK,
			.fs_avl = {
				[0] = {
					.num = ST_MAGN_FS_AVL_1300MG,
					.value = ST_MAGN_1_FS_AVL_1300_VAL,
					.gain = ST_MAGN_1_FS_AVL_1300_GAIN_XY,
					.gain2 = ST_MAGN_1_FS_AVL_1300_GAIN_Z,
                                },
				[1] = {
					.num = ST_MAGN_FS_AVL_1900MG,
					.value = ST_MAGN_1_FS_AVL_1900_VAL,
					.gain = ST_MAGN_1_FS_AVL_1900_GAIN_XY,
					.gain2 = ST_MAGN_1_FS_AVL_1900_GAIN_Z,
                                },
				[2] = {
					.num = ST_MAGN_FS_AVL_2500MG,
					.value = ST_MAGN_1_FS_AVL_2500_VAL,
					.gain = ST_MAGN_1_FS_AVL_2500_GAIN_XY,
					.gain2 = ST_MAGN_1_FS_AVL_2500_GAIN_Z,
                                },
				[3] = {
					.num = ST_MAGN_FS_AVL_4000MG,
					.value = ST_MAGN_1_FS_AVL_4000_VAL,
					.gain = ST_MAGN_1_FS_AVL_4000_GAIN_XY,
					.gain2 = ST_MAGN_1_FS_AVL_4000_GAIN_Z,
                                },
				[4] = {
					.num = ST_MAGN_FS_AVL_4700MG,
					.value = ST_MAGN_1_FS_AVL_4700_VAL,
					.gain = ST_MAGN_1_FS_AVL_4700_GAIN_XY,
					.gain2 = ST_MAGN_1_FS_AVL_4700_GAIN_Z,
                                },
				[5] = {
					.num = ST_MAGN_FS_AVL_5600MG,
					.value = ST_MAGN_1_FS_AVL_5600_VAL,
					.gain = ST_MAGN_1_FS_AVL_5600_GAIN_XY,
					.gain2 = ST_MAGN_1_FS_AVL_5600_GAIN_Z,
                                },
				[6] = {
					.num = ST_MAGN_FS_AVL_8100MG,
					.value = ST_MAGN_1_FS_AVL_8100_VAL,
					.gain = ST_MAGN_1_FS_AVL_8100_GAIN_XY,
					.gain2 = ST_MAGN_1_FS_AVL_8100_GAIN_Z,
                                },
                        },
                },
		.multi_read_bit = ST_MAGN_1_MULTIREAD_BIT,
		.bootime = 2,
        },
	{
		.wai = ST_MAGN_2_WAI_EXP,
		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
		.sensors_supported = {
			[0] = LIS3MDL_MAGN_DEV_NAME,
                },
		.ch = (struct iio_chan_spec *)st_magn_2_16bit_channels,
		.odr = {
			.addr = ST_MAGN_2_ODR_ADDR,
			.mask = ST_MAGN_2_ODR_MASK,
			.odr_avl = {
				{ 1, ST_MAGN_2_ODR_AVL_1HZ_VAL, },
				{ 2, ST_MAGN_2_ODR_AVL_2HZ_VAL, },
				{ 3, ST_MAGN_2_ODR_AVL_3HZ_VAL, },
				{ 5, ST_MAGN_2_ODR_AVL_5HZ_VAL, },
				{ 10, ST_MAGN_2_ODR_AVL_10HZ_VAL, },
				{ 20, ST_MAGN_2_ODR_AVL_20HZ_VAL, },
				{ 40, ST_MAGN_2_ODR_AVL_40HZ_VAL, },
				{ 80, ST_MAGN_2_ODR_AVL_80HZ_VAL, },
                        },
                },
		.pw = {
			.addr = ST_MAGN_2_PW_ADDR,
			.mask = ST_MAGN_2_PW_MASK,
			.value_on = ST_MAGN_2_PW_ON,
			.value_off = ST_MAGN_2_PW_OFF,
                },
		.fs = {
			.addr = ST_MAGN_2_FS_ADDR,
			.mask = ST_MAGN_2_FS_MASK,
			.fs_avl = {
				[0] = {
					.num = ST_MAGN_FS_AVL_4000MG,
					.value = ST_MAGN_2_FS_AVL_4000_VAL,
					.gain = ST_MAGN_2_FS_AVL_4000_GAIN,
                                },
				[1] = {
					.num = ST_MAGN_FS_AVL_8000MG,
					.value = ST_MAGN_2_FS_AVL_8000_VAL,
					.gain = ST_MAGN_2_FS_AVL_8000_GAIN,
                                },
				[2] = {
					.num = ST_MAGN_FS_AVL_12000MG,
					.value = ST_MAGN_2_FS_AVL_12000_VAL,
					.gain = ST_MAGN_2_FS_AVL_12000_GAIN,
                                },
				[3] = {
					.num = ST_MAGN_FS_AVL_16000MG,
					.value = ST_MAGN_2_FS_AVL_16000_VAL,
					.gain = ST_MAGN_2_FS_AVL_16000_GAIN,
                                },
                        },
                },
		.multi_read_bit = ST_MAGN_2_MULTIREAD_BIT,
		.bootime = 2,
        },
	{
		.wai = ST_MAGN_3_WAI_EXP,
		.wai_addr = ST_MAGN_3_WAI_ADDR,
		.sensors_supported = {
			[0] = LSM303AGR_MAGN_DEV_NAME,
                },
		.ch = (struct iio_chan_spec *)st_magn_3_16bit_channels,
		.odr = {
			.addr = ST_MAGN_3_ODR_ADDR,
			.mask = ST_MAGN_3_ODR_MASK,
			.odr_avl = {
				{ 10, ST_MAGN_3_ODR_AVL_10HZ_VAL, },
				{ 20, ST_MAGN_3_ODR_AVL_20HZ_VAL, },
				{ 50, ST_MAGN_3_ODR_AVL_50HZ_VAL, },
				{ 100, ST_MAGN_3_ODR_AVL_100HZ_VAL, },
                        },
                },
		.pw = {
			.addr = ST_MAGN_3_PW_ADDR,
			.mask = ST_MAGN_3_PW_MASK,
			.value_on = ST_MAGN_3_PW_ON,
			.value_off = ST_MAGN_3_PW_OFF,
                },
		.fs = {
			.fs_avl = {
				[0] = {
					.num = ST_MAGN_FS_AVL_15000MG,
					.gain = ST_MAGN_3_FS_AVL_15000_GAIN,
                                },
                        },
                },
		.bdu = {
			.addr = ST_MAGN_3_BDU_ADDR,
			.mask = ST_MAGN_3_BDU_MASK,
                },
		.drdy_irq = {
			.addr = ST_MAGN_3_DRDY_IRQ_ADDR,
			.mask_int1 = ST_MAGN_3_DRDY_INT_MASK,
			.addr_ihl = ST_MAGN_3_IHL_IRQ_ADDR,
			.mask_ihl = ST_MAGN_3_IHL_IRQ_MASK,
			.addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
                },
		.multi_read_bit = ST_MAGN_3_MULTIREAD_BIT,
		.bootime = 2,
        },
};


static int st_magn_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *ch, int *val, int *val2, long mask) { int err; struct st_sensor_data *mdata = iio_priv(indio_dev); switch (mask) { case IIO_CHAN_INFO_RAW: err = st_sensors_read_info_raw(indio_dev, ch, val); if (err < 0) goto read_error; return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: *val = 0; if ((ch->scan_index == ST_SENSORS_SCAN_Z) && (mdata->current_fullscale->gain2 != 0)) *val2 = mdata->current_fullscale->gain2; else *val2 = mdata->current_fullscale->gain; return IIO_VAL_INT_PLUS_MICRO; case IIO_CHAN_INFO_SAMP_FREQ: *val = mdata->odr; return IIO_VAL_INT; default: return -EINVAL; } read_error: return err; }

Contributors

PersonTokensPropCommitsCommitProp
denis cioccadenis ciocca13391.10%150.00%
jonathan cameronjonathan cameron138.90%150.00%
Total146100.00%2100.00%


static int st_magn_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { int err; switch (mask) { case IIO_CHAN_INFO_SCALE: err = st_sensors_set_fullscale_by_gain(indio_dev, val2); break; case IIO_CHAN_INFO_SAMP_FREQ: if (val2) return -EINVAL; mutex_lock(&indio_dev->mlock); err = st_sensors_set_odr(indio_dev, val); mutex_unlock(&indio_dev->mlock); return err; default: err = -EINVAL; } return err; }

Contributors

PersonTokensPropCommitsCommitProp
denis cioccadenis ciocca5759.38%150.00%
jonathan cameronjonathan cameron3940.62%150.00%
Total96100.00%2100.00%

static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL(); static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_magn_scale_available); static struct attribute *st_magn_attributes[] = { &iio_dev_attr_sampling_frequency_available.dev_attr.attr, &iio_dev_attr_in_magn_scale_available.dev_attr.attr, NULL, }; static const struct attribute_group st_magn_attribute_group = { .attrs = st_magn_attributes, }; static const struct iio_info magn_info = { .driver_module = THIS_MODULE, .attrs = &st_magn_attribute_group, .read_raw = &st_magn_read_raw, .write_raw = &st_magn_write_raw, .debugfs_reg_access = &st_sensors_debugfs_reg_access, }; #ifdef CONFIG_IIO_TRIGGER static const struct iio_trigger_ops st_magn_trigger_ops = { .owner = THIS_MODULE, .set_trigger_state = ST_MAGN_TRIGGER_SET_STATE, .validate_device = st_sensors_validate_device, }; #define ST_MAGN_TRIGGER_OPS (&st_magn_trigger_ops) #else #define ST_MAGN_TRIGGER_OPS NULL #endif
int st_magn_common_probe(struct iio_dev *indio_dev) { struct st_sensor_data *mdata = iio_priv(indio_dev); int irq = mdata->get_irq_data_ready(indio_dev); int err; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &magn_info; mutex_init(&mdata->tb.buf_lock); err = st_sensors_power_enable(indio_dev); if (err) return err; err = st_sensors_check_device_support(indio_dev, ARRAY_SIZE(st_magn_sensors_settings), st_magn_sensors_settings); if (err < 0) goto st_magn_power_off; mdata->num_data_channels = ST_MAGN_NUMBER_DATA_CHANNELS; mdata->multiread_bit = mdata->sensor_settings->multi_read_bit; indio_dev->channels = mdata->sensor_settings->ch; indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS; mdata->current_fullscale = (struct st_sensor_fullscale_avl *) &mdata->sensor_settings->fs.fs_avl[0]; mdata->odr = mdata->sensor_settings->odr.odr_avl[0].hz; err = st_sensors_init_sensor(indio_dev, NULL); if (err < 0) goto st_magn_power_off; err = st_magn_allocate_ring(indio_dev); if (err < 0) goto st_magn_power_off; if (irq > 0) { err = st_sensors_allocate_trigger(indio_dev, ST_MAGN_TRIGGER_OPS); if (err < 0) goto st_magn_probe_trigger_error; } err = iio_device_register(indio_dev); if (err) goto st_magn_device_register_error; dev_info(&indio_dev->dev, "registered magnetometer %s\n", indio_dev->name); return 0; st_magn_device_register_error: if (irq > 0) st_sensors_deallocate_trigger(indio_dev); st_magn_probe_trigger_error: st_magn_deallocate_ring(indio_dev); st_magn_power_off: st_sensors_power_disable(indio_dev); return err; }

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PersonTokensPropCommitsCommitProp
denis cioccadenis ciocca21475.35%650.00%
gregor boiriegregor boirie258.80%18.33%
linus walleijlinus walleij196.69%216.67%
lee joneslee jones155.28%18.33%
alban bedelalban bedel103.52%18.33%
giuseppe barbagiuseppe barba10.35%18.33%
Total284100.00%12100.00%

EXPORT_SYMBOL(st_magn_common_probe);
void st_magn_common_remove(struct iio_dev *indio_dev) { struct st_sensor_data *mdata = iio_priv(indio_dev); st_sensors_power_disable(indio_dev); iio_device_unregister(indio_dev); if (mdata->get_irq_data_ready(indio_dev) > 0) st_sensors_deallocate_trigger(indio_dev); st_magn_deallocate_ring(indio_dev); }

Contributors

PersonTokensPropCommitsCommitProp
denis cioccadenis ciocca4690.20%150.00%
linus walleijlinus walleij59.80%150.00%
Total51100.00%2100.00%

EXPORT_SYMBOL(st_magn_common_remove); MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); MODULE_DESCRIPTION("STMicroelectronics magnetometers driver"); MODULE_LICENSE("GPL v2");

Overall Contributors

PersonTokensPropCommitsCommitProp
denis cioccadenis ciocca173262.17%939.13%
linus walleijlinus walleij53919.35%730.43%
giuseppe barbagiuseppe barba41314.82%313.04%
jonathan cameronjonathan cameron521.87%14.35%
gregor boiriegregor boirie250.90%14.35%
lee joneslee jones150.54%14.35%
alban bedelalban bedel100.36%14.35%
Total2786100.00%23100.00%
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