| /* |
| * 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_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, |
| }, |
| .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; |
| } |
| |
| 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; |
| } |
| |
| 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, |
| }; |
| #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); |
| |
| st_sensors_power_enable(indio_dev); |
| |
| err = st_sensors_check_device_support(indio_dev, |
| ARRAY_SIZE(st_magn_sensors_settings), |
| st_magn_sensors_settings); |
| if (err < 0) |
| return err; |
| |
| 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) |
| return err; |
| |
| err = st_magn_allocate_ring(indio_dev); |
| if (err < 0) |
| return err; |
| |
| 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); |
| |
| return err; |
| } |
| 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); |
| } |
| EXPORT_SYMBOL(st_magn_common_remove); |
| |
| MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); |
| MODULE_DESCRIPTION("STMicroelectronics magnetometers driver"); |
| MODULE_LICENSE("GPL v2"); |