| /* |
| * STMicroelectronics accelerometers 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/iio/iio.h> |
| #include <linux/iio/sysfs.h> |
| #include <linux/iio/trigger.h> |
| #include <linux/iio/buffer.h> |
| |
| #include <linux/iio/common/st_sensors.h> |
| #include "st_accel.h" |
| |
| #define ST_ACCEL_NUMBER_DATA_CHANNELS 3 |
| |
| /* DEFAULT VALUE FOR SENSORS */ |
| #define ST_ACCEL_DEFAULT_OUT_X_L_ADDR 0x28 |
| #define ST_ACCEL_DEFAULT_OUT_Y_L_ADDR 0x2a |
| #define ST_ACCEL_DEFAULT_OUT_Z_L_ADDR 0x2c |
| |
| /* 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 |
| #define ST_ACCEL_FS_AVL_100G 100 |
| #define ST_ACCEL_FS_AVL_200G 200 |
| #define ST_ACCEL_FS_AVL_400G 400 |
| |
| static const struct iio_chan_spec st_accel_8bit_channels[] = { |
| ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 8, 8, |
| ST_ACCEL_DEFAULT_OUT_X_L_ADDR+1), |
| ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 8, 8, |
| ST_ACCEL_DEFAULT_OUT_Y_L_ADDR+1), |
| ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 8, 8, |
| ST_ACCEL_DEFAULT_OUT_Z_L_ADDR+1), |
| IIO_CHAN_SOFT_TIMESTAMP(3) |
| }; |
| |
| static const struct iio_chan_spec st_accel_12bit_channels[] = { |
| ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 12, 16, |
| ST_ACCEL_DEFAULT_OUT_X_L_ADDR), |
| ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 12, 16, |
| ST_ACCEL_DEFAULT_OUT_Y_L_ADDR), |
| ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 12, 16, |
| ST_ACCEL_DEFAULT_OUT_Z_L_ADDR), |
| IIO_CHAN_SOFT_TIMESTAMP(3) |
| }; |
| |
| static const struct iio_chan_spec st_accel_16bit_channels[] = { |
| ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16, |
| ST_ACCEL_DEFAULT_OUT_X_L_ADDR), |
| ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16, |
| ST_ACCEL_DEFAULT_OUT_Y_L_ADDR), |
| ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16, |
| ST_ACCEL_DEFAULT_OUT_Z_L_ADDR), |
| IIO_CHAN_SOFT_TIMESTAMP(3) |
| }; |
| |
| static const struct st_sensor_settings st_accel_sensors_settings[] = { |
| { |
| .wai = 0x33, |
| .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
| .sensors_supported = { |
| [0] = LIS3DH_ACCEL_DEV_NAME, |
| [1] = LSM303DLHC_ACCEL_DEV_NAME, |
| [2] = LSM330D_ACCEL_DEV_NAME, |
| [3] = LSM330DL_ACCEL_DEV_NAME, |
| [4] = LSM330DLC_ACCEL_DEV_NAME, |
| [5] = LSM303AGR_ACCEL_DEV_NAME, |
| [6] = LIS2DH12_ACCEL_DEV_NAME, |
| }, |
| .ch = (struct iio_chan_spec *)st_accel_12bit_channels, |
| .odr = { |
| .addr = 0x20, |
| .mask = 0xf0, |
| .odr_avl = { |
| { .hz = 1, .value = 0x01, }, |
| { .hz = 10, .value = 0x02, }, |
| { .hz = 25, .value = 0x03, }, |
| { .hz = 50, .value = 0x04, }, |
| { .hz = 100, .value = 0x05, }, |
| { .hz = 200, .value = 0x06, }, |
| { .hz = 400, .value = 0x07, }, |
| { .hz = 1600, .value = 0x08, }, |
| }, |
| }, |
| .pw = { |
| .addr = 0x20, |
| .mask = 0xf0, |
| .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| }, |
| .enable_axis = { |
| .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| }, |
| .fs = { |
| .addr = 0x23, |
| .mask = 0x30, |
| .fs_avl = { |
| [0] = { |
| .num = ST_ACCEL_FS_AVL_2G, |
| .value = 0x00, |
| .gain = IIO_G_TO_M_S_2(1000), |
| }, |
| [1] = { |
| .num = ST_ACCEL_FS_AVL_4G, |
| .value = 0x01, |
| .gain = IIO_G_TO_M_S_2(2000), |
| }, |
| [2] = { |
| .num = ST_ACCEL_FS_AVL_8G, |
| .value = 0x02, |
| .gain = IIO_G_TO_M_S_2(4000), |
| }, |
| [3] = { |
| .num = ST_ACCEL_FS_AVL_16G, |
| .value = 0x03, |
| .gain = IIO_G_TO_M_S_2(12000), |
| }, |
| }, |
| }, |
| .bdu = { |
| .addr = 0x23, |
| .mask = 0x80, |
| }, |
| .drdy_irq = { |
| .addr = 0x22, |
| .mask_int1 = 0x10, |
| .mask_int2 = 0x08, |
| .addr_ihl = 0x25, |
| .mask_ihl = 0x02, |
| .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
| }, |
| .multi_read_bit = true, |
| .bootime = 2, |
| }, |
| { |
| .wai = 0x32, |
| .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
| .sensors_supported = { |
| [0] = LIS331DLH_ACCEL_DEV_NAME, |
| [1] = LSM303DL_ACCEL_DEV_NAME, |
| [2] = LSM303DLH_ACCEL_DEV_NAME, |
| [3] = LSM303DLM_ACCEL_DEV_NAME, |
| }, |
| .ch = (struct iio_chan_spec *)st_accel_12bit_channels, |
| .odr = { |
| .addr = 0x20, |
| .mask = 0x18, |
| .odr_avl = { |
| { .hz = 50, .value = 0x00, }, |
| { .hz = 100, .value = 0x01, }, |
| { .hz = 400, .value = 0x02, }, |
| { .hz = 1000, .value = 0x03, }, |
| }, |
| }, |
| .pw = { |
| .addr = 0x20, |
| .mask = 0xe0, |
| .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, |
| .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| }, |
| .enable_axis = { |
| .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| }, |
| .fs = { |
| .addr = 0x23, |
| .mask = 0x30, |
| .fs_avl = { |
| [0] = { |
| .num = ST_ACCEL_FS_AVL_2G, |
| .value = 0x00, |
| .gain = IIO_G_TO_M_S_2(1000), |
| }, |
| [1] = { |
| .num = ST_ACCEL_FS_AVL_4G, |
| .value = 0x01, |
| .gain = IIO_G_TO_M_S_2(2000), |
| }, |
| [2] = { |
| .num = ST_ACCEL_FS_AVL_8G, |
| .value = 0x03, |
| .gain = IIO_G_TO_M_S_2(3900), |
| }, |
| }, |
| }, |
| .bdu = { |
| .addr = 0x23, |
| .mask = 0x80, |
| }, |
| .drdy_irq = { |
| .addr = 0x22, |
| .mask_int1 = 0x02, |
| .mask_int2 = 0x10, |
| .addr_ihl = 0x22, |
| .mask_ihl = 0x80, |
| .addr_od = 0x22, |
| .mask_od = 0x40, |
| .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
| }, |
| .multi_read_bit = true, |
| .bootime = 2, |
| }, |
| { |
| .wai = 0x40, |
| .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
| .sensors_supported = { |
| [0] = LSM330_ACCEL_DEV_NAME, |
| }, |
| .ch = (struct iio_chan_spec *)st_accel_16bit_channels, |
| .odr = { |
| .addr = 0x20, |
| .mask = 0xf0, |
| .odr_avl = { |
| { .hz = 3, .value = 0x01, }, |
| { .hz = 6, .value = 0x02, }, |
| { .hz = 12, .value = 0x03, }, |
| { .hz = 25, .value = 0x04, }, |
| { .hz = 50, .value = 0x05, }, |
| { .hz = 100, .value = 0x06, }, |
| { .hz = 200, .value = 0x07, }, |
| { .hz = 400, .value = 0x08, }, |
| { .hz = 800, .value = 0x09, }, |
| { .hz = 1600, .value = 0x0a, }, |
| }, |
| }, |
| .pw = { |
| .addr = 0x20, |
| .mask = 0xf0, |
| .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| }, |
| .enable_axis = { |
| .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| }, |
| .fs = { |
| .addr = 0x24, |
| .mask = 0x38, |
| .fs_avl = { |
| [0] = { |
| .num = ST_ACCEL_FS_AVL_2G, |
| .value = 0x00, |
| .gain = IIO_G_TO_M_S_2(61), |
| }, |
| [1] = { |
| .num = ST_ACCEL_FS_AVL_4G, |
| .value = 0x01, |
| .gain = IIO_G_TO_M_S_2(122), |
| }, |
| [2] = { |
| .num = ST_ACCEL_FS_AVL_6G, |
| .value = 0x02, |
| .gain = IIO_G_TO_M_S_2(183), |
| }, |
| [3] = { |
| .num = ST_ACCEL_FS_AVL_8G, |
| .value = 0x03, |
| .gain = IIO_G_TO_M_S_2(244), |
| }, |
| [4] = { |
| .num = ST_ACCEL_FS_AVL_16G, |
| .value = 0x04, |
| .gain = IIO_G_TO_M_S_2(732), |
| }, |
| }, |
| }, |
| .bdu = { |
| .addr = 0x20, |
| .mask = 0x08, |
| }, |
| .drdy_irq = { |
| .addr = 0x23, |
| .mask_int1 = 0x80, |
| .mask_int2 = 0x00, |
| .addr_ihl = 0x23, |
| .mask_ihl = 0x40, |
| .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
| .ig1 = { |
| .en_addr = 0x23, |
| .en_mask = 0x08, |
| }, |
| }, |
| .multi_read_bit = false, |
| .bootime = 2, |
| }, |
| { |
| .wai = 0x3a, |
| .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
| .sensors_supported = { |
| [0] = LIS3LV02DL_ACCEL_DEV_NAME, |
| }, |
| .ch = (struct iio_chan_spec *)st_accel_12bit_channels, |
| .odr = { |
| .addr = 0x20, |
| .mask = 0x30, /* DF1 and DF0 */ |
| .odr_avl = { |
| { .hz = 40, .value = 0x00, }, |
| { .hz = 160, .value = 0x01, }, |
| { .hz = 640, .value = 0x02, }, |
| { .hz = 2560, .value = 0x03, }, |
| }, |
| }, |
| .pw = { |
| .addr = 0x20, |
| .mask = 0xc0, |
| .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, |
| .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| }, |
| .enable_axis = { |
| .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| }, |
| .fs = { |
| .addr = 0x21, |
| .mask = 0x80, |
| .fs_avl = { |
| [0] = { |
| .num = ST_ACCEL_FS_AVL_2G, |
| .value = 0x00, |
| .gain = IIO_G_TO_M_S_2(1024), |
| }, |
| [1] = { |
| .num = ST_ACCEL_FS_AVL_6G, |
| .value = 0x01, |
| .gain = IIO_G_TO_M_S_2(340), |
| }, |
| }, |
| }, |
| .bdu = { |
| .addr = 0x21, |
| .mask = 0x40, |
| }, |
| .drdy_irq = { |
| .addr = 0x21, |
| .mask_int1 = 0x04, |
| .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
| }, |
| .multi_read_bit = true, |
| .bootime = 2, /* guess */ |
| }, |
| { |
| .wai = 0x3b, |
| .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
| .sensors_supported = { |
| [0] = LIS331DL_ACCEL_DEV_NAME, |
| }, |
| .ch = (struct iio_chan_spec *)st_accel_8bit_channels, |
| .odr = { |
| .addr = 0x20, |
| .mask = 0x80, |
| .odr_avl = { |
| { .hz = 100, .value = 0x00, }, |
| { .hz = 400, .value = 0x01, }, |
| }, |
| }, |
| .pw = { |
| .addr = 0x20, |
| .mask = 0x40, |
| .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, |
| .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| }, |
| .enable_axis = { |
| .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| }, |
| .fs = { |
| .addr = 0x20, |
| .mask = 0x20, |
| /* |
| * TODO: check these resulting gain settings, these are |
| * not in the datsheet |
| */ |
| .fs_avl = { |
| [0] = { |
| .num = ST_ACCEL_FS_AVL_2G, |
| .value = 0x00, |
| .gain = IIO_G_TO_M_S_2(18000), |
| }, |
| [1] = { |
| .num = ST_ACCEL_FS_AVL_8G, |
| .value = 0x01, |
| .gain = IIO_G_TO_M_S_2(72000), |
| }, |
| }, |
| }, |
| .drdy_irq = { |
| .addr = 0x22, |
| .mask_int1 = 0x04, |
| .mask_int2 = 0x20, |
| .addr_ihl = 0x22, |
| .mask_ihl = 0x80, |
| .addr_od = 0x22, |
| .mask_od = 0x40, |
| .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
| }, |
| .multi_read_bit = false, |
| .bootime = 2, /* guess */ |
| }, |
| { |
| .wai = 0x32, |
| .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
| .sensors_supported = { |
| [0] = H3LIS331DL_DRIVER_NAME, |
| }, |
| .ch = (struct iio_chan_spec *)st_accel_12bit_channels, |
| .odr = { |
| .addr = 0x20, |
| .mask = 0x18, |
| .odr_avl = { |
| { .hz = 50, .value = 0x00, }, |
| { .hz = 100, .value = 0x01, }, |
| { .hz = 400, .value = 0x02, }, |
| { .hz = 1000, .value = 0x03, }, |
| }, |
| }, |
| .pw = { |
| .addr = 0x20, |
| .mask = 0x20, |
| .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, |
| .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| }, |
| .enable_axis = { |
| .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| }, |
| .fs = { |
| .addr = 0x23, |
| .mask = 0x30, |
| .fs_avl = { |
| [0] = { |
| .num = ST_ACCEL_FS_AVL_100G, |
| .value = 0x00, |
| .gain = IIO_G_TO_M_S_2(49000), |
| }, |
| [1] = { |
| .num = ST_ACCEL_FS_AVL_200G, |
| .value = 0x01, |
| .gain = IIO_G_TO_M_S_2(98000), |
| }, |
| [2] = { |
| .num = ST_ACCEL_FS_AVL_400G, |
| .value = 0x03, |
| .gain = IIO_G_TO_M_S_2(195000), |
| }, |
| }, |
| }, |
| .bdu = { |
| .addr = 0x23, |
| .mask = 0x80, |
| }, |
| .drdy_irq = { |
| .addr = 0x22, |
| .mask_int1 = 0x02, |
| .mask_int2 = 0x10, |
| .addr_ihl = 0x22, |
| .mask_ihl = 0x80, |
| }, |
| .multi_read_bit = true, |
| .bootime = 2, |
| }, |
| { |
| /* No WAI register present */ |
| .sensors_supported = { |
| [0] = LIS3L02DQ_ACCEL_DEV_NAME, |
| }, |
| .ch = (struct iio_chan_spec *)st_accel_12bit_channels, |
| .odr = { |
| .addr = 0x20, |
| .mask = 0x30, |
| .odr_avl = { |
| { .hz = 280, .value = 0x00, }, |
| { .hz = 560, .value = 0x01, }, |
| { .hz = 1120, .value = 0x02, }, |
| { .hz = 4480, .value = 0x03, }, |
| }, |
| }, |
| .pw = { |
| .addr = 0x20, |
| .mask = 0xc0, |
| .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, |
| .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| }, |
| .enable_axis = { |
| .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| }, |
| .fs = { |
| .fs_avl = { |
| [0] = { |
| .num = ST_ACCEL_FS_AVL_2G, |
| .gain = IIO_G_TO_M_S_2(488), |
| }, |
| }, |
| }, |
| /* |
| * The part has a BDU bit but if set the data is never |
| * updated so don't set it. |
| */ |
| .bdu = { |
| }, |
| .drdy_irq = { |
| .addr = 0x21, |
| .mask_int1 = 0x04, |
| .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
| }, |
| .multi_read_bit = false, |
| .bootime = 2, |
| }, |
| { |
| .wai = 0x33, |
| .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
| .sensors_supported = { |
| [0] = LNG2DM_ACCEL_DEV_NAME, |
| }, |
| .ch = (struct iio_chan_spec *)st_accel_8bit_channels, |
| .odr = { |
| .addr = 0x20, |
| .mask = 0xf0, |
| .odr_avl = { |
| { .hz = 1, .value = 0x01, }, |
| { .hz = 10, .value = 0x02, }, |
| { .hz = 25, .value = 0x03, }, |
| { .hz = 50, .value = 0x04, }, |
| { .hz = 100, .value = 0x05, }, |
| { .hz = 200, .value = 0x06, }, |
| { .hz = 400, .value = 0x07, }, |
| { .hz = 1600, .value = 0x08, }, |
| }, |
| }, |
| .pw = { |
| .addr = 0x20, |
| .mask = 0xf0, |
| .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| }, |
| .enable_axis = { |
| .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| }, |
| .fs = { |
| .addr = 0x23, |
| .mask = 0x30, |
| .fs_avl = { |
| [0] = { |
| .num = ST_ACCEL_FS_AVL_2G, |
| .value = 0x00, |
| .gain = IIO_G_TO_M_S_2(15600), |
| }, |
| [1] = { |
| .num = ST_ACCEL_FS_AVL_4G, |
| .value = 0x01, |
| .gain = IIO_G_TO_M_S_2(31200), |
| }, |
| [2] = { |
| .num = ST_ACCEL_FS_AVL_8G, |
| .value = 0x02, |
| .gain = IIO_G_TO_M_S_2(62500), |
| }, |
| [3] = { |
| .num = ST_ACCEL_FS_AVL_16G, |
| .value = 0x03, |
| .gain = IIO_G_TO_M_S_2(187500), |
| }, |
| }, |
| }, |
| .drdy_irq = { |
| .addr = 0x22, |
| .mask_int1 = 0x10, |
| .mask_int2 = 0x08, |
| .addr_ihl = 0x25, |
| .mask_ihl = 0x02, |
| .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
| }, |
| .multi_read_bit = true, |
| .bootime = 2, |
| }, |
| }; |
| |
| static int st_accel_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 *adata = 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 = adata->current_fullscale->gain / 1000000; |
| *val2 = adata->current_fullscale->gain % 1000000; |
| return IIO_VAL_INT_PLUS_MICRO; |
| case IIO_CHAN_INFO_SAMP_FREQ: |
| *val = adata->odr; |
| return IIO_VAL_INT; |
| default: |
| return -EINVAL; |
| } |
| |
| read_error: |
| return err; |
| } |
| |
| static int st_accel_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: { |
| int gain; |
| |
| gain = val * 1000000 + val2; |
| err = st_sensors_set_fullscale_by_gain(indio_dev, gain); |
| 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: |
| return -EINVAL; |
| } |
| |
| return err; |
| } |
| |
| static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL(); |
| static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_accel_scale_available); |
| |
| static struct attribute *st_accel_attributes[] = { |
| &iio_dev_attr_sampling_frequency_available.dev_attr.attr, |
| &iio_dev_attr_in_accel_scale_available.dev_attr.attr, |
| NULL, |
| }; |
| |
| static const struct attribute_group st_accel_attribute_group = { |
| .attrs = st_accel_attributes, |
| }; |
| |
| static const struct iio_info accel_info = { |
| .driver_module = THIS_MODULE, |
| .attrs = &st_accel_attribute_group, |
| .read_raw = &st_accel_read_raw, |
| .write_raw = &st_accel_write_raw, |
| .debugfs_reg_access = &st_sensors_debugfs_reg_access, |
| }; |
| |
| #ifdef CONFIG_IIO_TRIGGER |
| static const struct iio_trigger_ops st_accel_trigger_ops = { |
| .owner = THIS_MODULE, |
| .set_trigger_state = ST_ACCEL_TRIGGER_SET_STATE, |
| .validate_device = st_sensors_validate_device, |
| }; |
| #define ST_ACCEL_TRIGGER_OPS (&st_accel_trigger_ops) |
| #else |
| #define ST_ACCEL_TRIGGER_OPS NULL |
| #endif |
| |
| int st_accel_common_probe(struct iio_dev *indio_dev) |
| { |
| struct st_sensor_data *adata = iio_priv(indio_dev); |
| int irq = adata->get_irq_data_ready(indio_dev); |
| int err; |
| |
| indio_dev->modes = INDIO_DIRECT_MODE; |
| indio_dev->info = &accel_info; |
| mutex_init(&adata->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_accel_sensors_settings), |
| st_accel_sensors_settings); |
| if (err < 0) |
| goto st_accel_power_off; |
| |
| adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS; |
| adata->multiread_bit = adata->sensor_settings->multi_read_bit; |
| indio_dev->channels = adata->sensor_settings->ch; |
| indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS; |
| |
| adata->current_fullscale = (struct st_sensor_fullscale_avl *) |
| &adata->sensor_settings->fs.fs_avl[0]; |
| adata->odr = adata->sensor_settings->odr.odr_avl[0].hz; |
| |
| if (!adata->dev->platform_data) |
| adata->dev->platform_data = |
| (struct st_sensors_platform_data *)&default_accel_pdata; |
| |
| err = st_sensors_init_sensor(indio_dev, adata->dev->platform_data); |
| if (err < 0) |
| goto st_accel_power_off; |
| |
| err = st_accel_allocate_ring(indio_dev); |
| if (err < 0) |
| goto st_accel_power_off; |
| |
| if (irq > 0) { |
| err = st_sensors_allocate_trigger(indio_dev, |
| ST_ACCEL_TRIGGER_OPS); |
| if (err < 0) |
| goto st_accel_probe_trigger_error; |
| } |
| |
| err = iio_device_register(indio_dev); |
| if (err) |
| goto st_accel_device_register_error; |
| |
| dev_info(&indio_dev->dev, "registered accelerometer %s\n", |
| indio_dev->name); |
| |
| return 0; |
| |
| st_accel_device_register_error: |
| if (irq > 0) |
| st_sensors_deallocate_trigger(indio_dev); |
| st_accel_probe_trigger_error: |
| st_accel_deallocate_ring(indio_dev); |
| st_accel_power_off: |
| st_sensors_power_disable(indio_dev); |
| |
| return err; |
| } |
| EXPORT_SYMBOL(st_accel_common_probe); |
| |
| void st_accel_common_remove(struct iio_dev *indio_dev) |
| { |
| struct st_sensor_data *adata = iio_priv(indio_dev); |
| |
| st_sensors_power_disable(indio_dev); |
| |
| iio_device_unregister(indio_dev); |
| if (adata->get_irq_data_ready(indio_dev) > 0) |
| st_sensors_deallocate_trigger(indio_dev); |
| |
| st_accel_deallocate_ring(indio_dev); |
| } |
| EXPORT_SYMBOL(st_accel_common_remove); |
| |
| MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); |
| MODULE_DESCRIPTION("STMicroelectronics accelerometers driver"); |
| MODULE_LICENSE("GPL v2"); |
