| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Lorenzo Bianconi | 913 | 100.00% | 23 | 100.00% |
| Total | 913 | 23 |
/* * STMicroelectronics st_lsm6dsx sensor driver * * Copyright 2016 STMicroelectronics Inc. * * Lorenzo Bianconi <lorenzo.bianconi@st.com> * Denis Ciocca <denis.ciocca@st.com> * * Licensed under the GPL-2. */ #ifndef ST_LSM6DSX_H #define ST_LSM6DSX_H #include <linux/device.h> #define ST_LSM6DS3_DEV_NAME "lsm6ds3" #define ST_LSM6DS3H_DEV_NAME "lsm6ds3h" #define ST_LSM6DSL_DEV_NAME "lsm6dsl" #define ST_LSM6DSM_DEV_NAME "lsm6dsm" #define ST_ISM330DLC_DEV_NAME "ism330dlc" #define ST_LSM6DSO_DEV_NAME "lsm6dso" enum st_lsm6dsx_hw_id { ST_LSM6DS3_ID, ST_LSM6DS3H_ID, ST_LSM6DSL_ID, ST_LSM6DSM_ID, ST_ISM330DLC_ID, ST_LSM6DSO_ID, ST_LSM6DSX_MAX_ID, }; #define ST_LSM6DSX_BUFF_SIZE 512 #define ST_LSM6DSX_CHAN_SIZE 2 #define ST_LSM6DSX_SAMPLE_SIZE 6 #define ST_LSM6DSX_TAG_SIZE 1 #define ST_LSM6DSX_TAGGED_SAMPLE_SIZE (ST_LSM6DSX_SAMPLE_SIZE + \ ST_LSM6DSX_TAG_SIZE) #define ST_LSM6DSX_MAX_WORD_LEN ((32 / ST_LSM6DSX_SAMPLE_SIZE) * \ ST_LSM6DSX_SAMPLE_SIZE) #define ST_LSM6DSX_MAX_TAGGED_WORD_LEN ((32 / ST_LSM6DSX_TAGGED_SAMPLE_SIZE) \ * ST_LSM6DSX_TAGGED_SAMPLE_SIZE) #define ST_LSM6DSX_SHIFT_VAL(val, mask) (((val) << __ffs(mask)) & (mask)) #define ST_LSM6DSX_CHANNEL(chan_type, addr, mod, scan_idx) \ { \ .type = chan_type, \ .address = addr, \ .modified = 1, \ .channel2 = mod, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ BIT(IIO_CHAN_INFO_SCALE), \ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \ .scan_index = scan_idx, \ .scan_type = { \ .sign = 's', \ .realbits = 16, \ .storagebits = 16, \ .endianness = IIO_LE, \ }, \ } struct st_lsm6dsx_reg { u8 addr; u8 mask; }; struct st_lsm6dsx_hw; struct st_lsm6dsx_odr { u16 hz; u8 val; }; #define ST_LSM6DSX_ODR_LIST_SIZE 6 struct st_lsm6dsx_odr_table_entry { struct st_lsm6dsx_reg reg; struct st_lsm6dsx_odr odr_avl[ST_LSM6DSX_ODR_LIST_SIZE]; }; struct st_lsm6dsx_fs { u32 gain; u8 val; }; #define ST_LSM6DSX_FS_LIST_SIZE 4 struct st_lsm6dsx_fs_table_entry { struct st_lsm6dsx_reg reg; struct st_lsm6dsx_fs fs_avl[ST_LSM6DSX_FS_LIST_SIZE]; }; /** * struct st_lsm6dsx_fifo_ops - ST IMU FIFO settings * @read_fifo: Read FIFO callback. * @fifo_th: FIFO threshold register info (addr + mask). * @fifo_diff: FIFO diff status register info (addr + mask). * @th_wl: FIFO threshold word length. */ struct st_lsm6dsx_fifo_ops { int (*read_fifo)(struct st_lsm6dsx_hw *hw); struct { u8 addr; u16 mask; } fifo_th; struct { u8 addr; u16 mask; } fifo_diff; u8 th_wl; }; /** * struct st_lsm6dsx_hw_ts_settings - ST IMU hw timer settings * @timer_en: Hw timer enable register info (addr + mask). * @hr_timer: Hw timer resolution register info (addr + mask). * @fifo_en: Hw timer FIFO enable register info (addr + mask). * @decimator: Hw timer FIFO decimator register info (addr + mask). */ struct st_lsm6dsx_hw_ts_settings { struct st_lsm6dsx_reg timer_en; struct st_lsm6dsx_reg hr_timer; struct st_lsm6dsx_reg fifo_en; struct st_lsm6dsx_reg decimator; }; /** * struct st_lsm6dsx_shub_settings - ST IMU hw i2c controller settings * @page_mux: register page mux info (addr + mask). * @master_en: master config register info (addr + mask). * @pullup_en: i2c controller pull-up register info (addr + mask). * @aux_sens: aux sensor register info (addr + mask). * @wr_once: write_once register info (addr + mask). * @shub_out: sensor hub first output register info. * @slv0_addr: slave0 address in secondary page. * @dw_slv0_addr: slave0 write register address in secondary page. * @batch_en: Enable/disable FIFO batching. */ struct st_lsm6dsx_shub_settings { struct st_lsm6dsx_reg page_mux; struct st_lsm6dsx_reg master_en; struct st_lsm6dsx_reg pullup_en; struct st_lsm6dsx_reg aux_sens; struct st_lsm6dsx_reg wr_once; u8 shub_out; u8 slv0_addr; u8 dw_slv0_addr; u8 batch_en; }; enum st_lsm6dsx_ext_sensor_id { ST_LSM6DSX_ID_MAGN, }; /** * struct st_lsm6dsx_ext_dev_settings - i2c controller slave settings * @i2c_addr: I2c slave address list. * @wai: Wai address info. * @id: external sensor id. * @odr: Output data rate of the sensor [Hz]. * @gain: Configured sensor sensitivity. * @temp_comp: Temperature compensation register info (addr + mask). * @pwr_table: Power on register info (addr + mask). * @off_canc: Offset cancellation register info (addr + mask). * @bdu: Block data update register info (addr + mask). * @out: Output register info. */ struct st_lsm6dsx_ext_dev_settings { u8 i2c_addr[2]; struct { u8 addr; u8 val; } wai; enum st_lsm6dsx_ext_sensor_id id; struct st_lsm6dsx_odr_table_entry odr_table; struct st_lsm6dsx_fs_table_entry fs_table; struct st_lsm6dsx_reg temp_comp; struct { struct st_lsm6dsx_reg reg; u8 off_val; u8 on_val; } pwr_table; struct st_lsm6dsx_reg off_canc; struct st_lsm6dsx_reg bdu; struct { u8 addr; u8 len; } out; }; /** * struct st_lsm6dsx_settings - ST IMU sensor settings * @wai: Sensor WhoAmI default value. * @max_fifo_size: Sensor max fifo length in FIFO words. * @id: List of hw id supported by the driver configuration. * @decimator: List of decimator register info (addr + mask). * @batch: List of FIFO batching register info (addr + mask). * @fifo_ops: Sensor hw FIFO parameters. * @ts_settings: Hw timer related settings. * @shub_settings: i2c controller related settings. */ struct st_lsm6dsx_settings { u8 wai; u16 max_fifo_size; enum st_lsm6dsx_hw_id id[ST_LSM6DSX_MAX_ID]; struct st_lsm6dsx_reg decimator[ST_LSM6DSX_MAX_ID]; struct st_lsm6dsx_reg batch[ST_LSM6DSX_MAX_ID]; struct st_lsm6dsx_fifo_ops fifo_ops; struct st_lsm6dsx_hw_ts_settings ts_settings; struct st_lsm6dsx_shub_settings shub_settings; }; enum st_lsm6dsx_sensor_id { ST_LSM6DSX_ID_GYRO, ST_LSM6DSX_ID_ACC, ST_LSM6DSX_ID_EXT0, ST_LSM6DSX_ID_EXT1, ST_LSM6DSX_ID_EXT2, ST_LSM6DSX_ID_MAX, }; enum st_lsm6dsx_fifo_mode { ST_LSM6DSX_FIFO_BYPASS = 0x0, ST_LSM6DSX_FIFO_CONT = 0x6, }; /** * struct st_lsm6dsx_sensor - ST IMU sensor instance * @name: Sensor name. * @id: Sensor identifier. * @hw: Pointer to instance of struct st_lsm6dsx_hw. * @gain: Configured sensor sensitivity. * @odr: Output data rate of the sensor [Hz]. * @watermark: Sensor watermark level. * @sip: Number of samples in a given pattern. * @decimator: FIFO decimation factor. * @ts_ref: Sensor timestamp reference for hw one. * @ext_info: Sensor settings if it is connected to i2c controller */ struct st_lsm6dsx_sensor { char name[32]; enum st_lsm6dsx_sensor_id id; struct st_lsm6dsx_hw *hw; u32 gain; u16 odr; u16 watermark; u8 sip; u8 decimator; s64 ts_ref; struct { const struct st_lsm6dsx_ext_dev_settings *settings; u8 addr; } ext_info; }; /** * struct st_lsm6dsx_hw - ST IMU MEMS hw instance * @dev: Pointer to instance of struct device (I2C or SPI). * @regmap: Register map of the device. * @irq: Device interrupt line (I2C or SPI). * @fifo_lock: Mutex to prevent concurrent access to the hw FIFO. * @conf_lock: Mutex to prevent concurrent FIFO configuration update. * @page_lock: Mutex to prevent concurrent memory page configuration. * @fifo_mode: FIFO operating mode supported by the device. * @enable_mask: Enabled sensor bitmask. * @ts_sip: Total number of timestamp samples in a given pattern. * @sip: Total number of samples (acc/gyro/ts) in a given pattern. * @buff: Device read buffer. * @iio_devs: Pointers to acc/gyro iio_dev instances. * @settings: Pointer to the specific sensor settings in use. */ struct st_lsm6dsx_hw { struct device *dev; struct regmap *regmap; int irq; struct mutex fifo_lock; struct mutex conf_lock; struct mutex page_lock; enum st_lsm6dsx_fifo_mode fifo_mode; u8 enable_mask; u8 ts_sip; u8 sip; u8 *buff; struct iio_dev *iio_devs[ST_LSM6DSX_ID_MAX]; const struct st_lsm6dsx_settings *settings; }; static const unsigned long st_lsm6dsx_available_scan_masks[] = {0x7, 0x0}; extern const struct dev_pm_ops st_lsm6dsx_pm_ops; int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, const char *name, struct regmap *regmap); int st_lsm6dsx_sensor_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable); int st_lsm6dsx_fifo_setup(struct st_lsm6dsx_hw *hw); int st_lsm6dsx_set_watermark(struct iio_dev *iio_dev, unsigned int val); int st_lsm6dsx_update_watermark(struct st_lsm6dsx_sensor *sensor, u16 watermark); int st_lsm6dsx_flush_fifo(struct st_lsm6dsx_hw *hw); int st_lsm6dsx_set_fifo_mode(struct st_lsm6dsx_hw *hw, enum st_lsm6dsx_fifo_mode fifo_mode); int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw); int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw); int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val); int st_lsm6dsx_shub_probe(struct st_lsm6dsx_hw *hw, const char *name); int st_lsm6dsx_shub_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable); int st_lsm6dsx_set_page(struct st_lsm6dsx_hw *hw, bool enable); static inline int st_lsm6dsx_update_bits_locked(struct st_lsm6dsx_hw *hw, unsigned int addr, unsigned int mask, unsigned int val) { int err; mutex_lock(&hw->page_lock); err = regmap_update_bits(hw->regmap, addr, mask, val); mutex_unlock(&hw->page_lock); return err; } static inline int st_lsm6dsx_read_locked(struct st_lsm6dsx_hw *hw, unsigned int addr, void *val, unsigned int len) { int err; mutex_lock(&hw->page_lock); err = regmap_bulk_read(hw->regmap, addr, val, len); mutex_unlock(&hw->page_lock); return err; } static inline int st_lsm6dsx_write_locked(struct st_lsm6dsx_hw *hw, unsigned int addr, unsigned int val) { int err; mutex_lock(&hw->page_lock); err = regmap_write(hw->regmap, addr, val); mutex_unlock(&hw->page_lock); return err; } #endif /* ST_LSM6DSX_H */
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