Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 518 insertions, 0 deletions

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
new file mode 100644
index 000000000..6b57d47be
--- /dev/null
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
@@ -0,0 +1,518 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * STMicroelectronics st_lsm6dsx sensor driver
+ *
+ * Copyright 2016 STMicroelectronics Inc.
+ *
+ * Lorenzo Bianconi <lorenzo.bianconi@st.com>
+ * Denis Ciocca <denis.ciocca@st.com>
+ */
+
+#ifndef ST_LSM6DSX_H
+#define ST_LSM6DSX_H
+
+#include <linux/device.h>
+#include <linux/iio/iio.h>
+#include <linux/regulator/consumer.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"
+#define ST_ASM330LHH_DEV_NAME	"asm330lhh"
+#define ST_LSM6DSOX_DEV_NAME	"lsm6dsox"
+#define ST_LSM6DSR_DEV_NAME	"lsm6dsr"
+#define ST_LSM6DS3TRC_DEV_NAME	"lsm6ds3tr-c"
+#define ST_ISM330DHCX_DEV_NAME	"ism330dhcx"
+#define ST_LSM9DS1_DEV_NAME	"lsm9ds1-imu"
+#define ST_LSM6DS0_DEV_NAME	"lsm6ds0"
+#define ST_LSM6DSRX_DEV_NAME	"lsm6dsrx"
+#define ST_LSM6DST_DEV_NAME	"lsm6dst"
+#define ST_LSM6DSOP_DEV_NAME	"lsm6dsop"
+#define ST_ASM330LHHX_DEV_NAME	"asm330lhhx"
+#define ST_LSM6DSTX_DEV_NAME	"lsm6dstx"
+
+enum st_lsm6dsx_hw_id {
+	ST_LSM6DS3_ID,
+	ST_LSM6DS3H_ID,
+	ST_LSM6DSL_ID,
+	ST_LSM6DSM_ID,
+	ST_ISM330DLC_ID,
+	ST_LSM6DSO_ID,
+	ST_ASM330LHH_ID,
+	ST_LSM6DSOX_ID,
+	ST_LSM6DSR_ID,
+	ST_LSM6DS3TRC_ID,
+	ST_ISM330DHCX_ID,
+	ST_LSM9DS1_ID,
+	ST_LSM6DS0_ID,
+	ST_LSM6DSRX_ID,
+	ST_LSM6DST_ID,
+	ST_LSM6DSOP_ID,
+	ST_ASM330LHHX_ID,
+	ST_LSM6DSTX_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_ACC(chan_type, addr, mod, scan_idx)		\
+{									\
+	.type = chan_type,						\
+	.address = addr,						\
+	.modified = 1,							\
+	.channel2 = mod,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
+	.info_mask_shared_by_type = 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,					\
+	},								\
+	.event_spec = &st_lsm6dsx_event,				\
+	.ext_info = st_lsm6dsx_accel_ext_info,				\
+	.num_event_specs = 1,						\
+}
+
+#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),			\
+	.info_mask_shared_by_type = 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_sensor;
+struct st_lsm6dsx_hw;
+
+struct st_lsm6dsx_odr {
+	u32 milli_hz;
+	u8 val;
+};
+
+#define ST_LSM6DSX_ODR_LIST_SIZE	8
+struct st_lsm6dsx_odr_table_entry {
+	struct st_lsm6dsx_reg reg;
+
+	struct st_lsm6dsx_odr odr_avl[ST_LSM6DSX_ODR_LIST_SIZE];
+	int odr_len;
+};
+
+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];
+	int fs_len;
+};
+
+/**
+ * struct st_lsm6dsx_fifo_ops - ST IMU FIFO settings
+ * @update_fifo: Update FIFO configuration callback.
+ * @read_fifo: Read FIFO callback.
+ * @fifo_th: FIFO threshold register info (addr + mask).
+ * @fifo_diff: FIFO diff status register info (addr + mask).
+ * @max_size: Sensor max fifo length in FIFO words.
+ * @th_wl: FIFO threshold word length.
+ */
+struct st_lsm6dsx_fifo_ops {
+	int (*update_fifo)(struct st_lsm6dsx_sensor *sensor, bool enable);
+	int (*read_fifo)(struct st_lsm6dsx_hw *hw);
+	struct {
+		u8 addr;
+		u16 mask;
+	} fifo_th;
+	struct {
+		u8 addr;
+		u16 mask;
+	} fifo_diff;
+	u16 max_size;
+	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).
+ * @freq_fine: Difference in % of ODR with respect to the typical.
+ */
+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;
+	u8 freq_fine;
+};
+
+/**
+ * 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).
+ * @emb_func:  embedded function register info (addr + mask).
+ * @num_ext_dev: max number of slave devices.
+ * @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.
+ * @pause: controller pause value.
+ */
+struct st_lsm6dsx_shub_settings {
+	struct st_lsm6dsx_reg page_mux;
+	struct {
+		bool sec_page;
+		u8 addr;
+		u8 mask;
+	} master_en;
+	struct {
+		bool sec_page;
+		u8 addr;
+		u8 mask;
+	} pullup_en;
+	struct st_lsm6dsx_reg aux_sens;
+	struct st_lsm6dsx_reg wr_once;
+	struct st_lsm6dsx_reg emb_func;
+	u8 num_ext_dev;
+	struct {
+		bool sec_page;
+		u8 addr;
+	} shub_out;
+	u8 slv0_addr;
+	u8 dw_slv0_addr;
+	u8 batch_en;
+	u8 pause;
+};
+
+struct st_lsm6dsx_event_settings {
+	struct st_lsm6dsx_reg enable_reg;
+	struct st_lsm6dsx_reg wakeup_reg;
+	u8 wakeup_src_reg;
+	u8 wakeup_src_status_mask;
+	u8 wakeup_src_z_mask;
+	u8 wakeup_src_y_mask;
+	u8 wakeup_src_x_mask;
+};
+
+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_table: Output data rate of the sensor [Hz].
+ * @fs_table: Configured sensor sensitivity table depending on full scale.
+ * @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
+ * @reset: register address for reset.
+ * @boot: register address for boot.
+ * @bdu: register address for Block Data Update.
+ * @id: List of hw id/device name supported by the driver configuration.
+ * @channels: IIO channels supported by the device.
+ * @irq_config: interrupts related registers.
+ * @drdy_mask: register info for data-ready mask (addr + mask).
+ * @odr_table: Hw sensors odr table (Hz + val).
+ * @fs_table: Hw sensors gain table (gain + val).
+ * @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 {
+	struct st_lsm6dsx_reg reset;
+	struct st_lsm6dsx_reg boot;
+	struct st_lsm6dsx_reg bdu;
+	struct {
+		enum st_lsm6dsx_hw_id hw_id;
+		const char *name;
+		u8 wai;
+	} id[ST_LSM6DSX_MAX_ID];
+	struct {
+		const struct iio_chan_spec *chan;
+		int len;
+	} channels[2];
+	struct {
+		struct st_lsm6dsx_reg irq1;
+		struct st_lsm6dsx_reg irq2;
+		struct st_lsm6dsx_reg irq1_func;
+		struct st_lsm6dsx_reg irq2_func;
+		struct st_lsm6dsx_reg lir;
+		struct st_lsm6dsx_reg clear_on_read;
+		struct st_lsm6dsx_reg hla;
+		struct st_lsm6dsx_reg od;
+	} irq_config;
+	struct st_lsm6dsx_reg drdy_mask;
+	struct st_lsm6dsx_odr_table_entry odr_table[2];
+	struct st_lsm6dsx_fs_table_entry fs_table[2];
+	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;
+	struct st_lsm6dsx_event_settings event_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.
+ * @decimator: Sensor decimation factor.
+ * @sip: Number of samples in a given pattern.
+ * @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;
+	u32 odr;
+
+	u16 watermark;
+	u8 decimator;
+	u8 sip;
+	s64 ts_ref;
+
+	struct {
+		const struct st_lsm6dsx_ext_dev_settings *settings;
+		u32 slv_odr;
+		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.
+ * @regulators: VDD/VDDIO voltage regulators.
+ * @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.
+ * @suspend_mask: Suspended sensor bitmask.
+ * @enable_mask: Enabled sensor bitmask.
+ * @fifo_mask: Enabled hw FIFO bitmask.
+ * @ts_gain: Hw timestamp rate after internal calibration.
+ * @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.
+ * @irq_routing: pointer to interrupt routing configuration.
+ * @event_threshold: wakeup event threshold.
+ * @enable_event: enabled event bitmask.
+ * @iio_devs: Pointers to acc/gyro iio_dev instances.
+ * @settings: Pointer to the specific sensor settings in use.
+ * @orientation: sensor chip orientation relative to main hardware.
+ * @scan: Temporary buffers used to align data before iio_push_to_buffers()
+ */
+struct st_lsm6dsx_hw {
+	struct device *dev;
+	struct regmap *regmap;
+	struct regulator_bulk_data regulators[2];
+	int irq;
+
+	struct mutex fifo_lock;
+	struct mutex conf_lock;
+	struct mutex page_lock;
+
+	u8 suspend_mask;
+	u8 enable_mask;
+	u8 fifo_mask;
+	s64 ts_gain;
+	u8 ts_sip;
+	u8 sip;
+
+	const struct st_lsm6dsx_reg *irq_routing;
+	u8 event_threshold;
+	u8 enable_event;
+
+	u8 *buff;
+
+	struct iio_dev *iio_devs[ST_LSM6DSX_ID_MAX];
+
+	const struct st_lsm6dsx_settings *settings;
+
+	struct iio_mount_matrix orientation;
+	/* Ensure natural alignment of buffer elements */
+	struct {
+		__le16 channels[3];
+		s64 ts __aligned(8);
+	} scan[3];
+};
+
+static __maybe_unused const struct iio_event_spec st_lsm6dsx_event = {
+	.type = IIO_EV_TYPE_THRESH,
+	.dir = IIO_EV_DIR_EITHER,
+	.mask_separate = BIT(IIO_EV_INFO_VALUE) |
+			 BIT(IIO_EV_INFO_ENABLE)
+};
+
+static __maybe_unused 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,
+		     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_update_fifo(struct st_lsm6dsx_sensor *sensor, bool enable);
+int st_lsm6dsx_flush_fifo(struct st_lsm6dsx_hw *hw);
+int st_lsm6dsx_resume_fifo(struct st_lsm6dsx_hw *hw);
+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, u32 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;
+}
+
+static inline const struct iio_mount_matrix *
+st_lsm6dsx_get_mount_matrix(const struct iio_dev *iio_dev,
+			    const struct iio_chan_spec *chan)
+{
+	struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev);
+	struct st_lsm6dsx_hw *hw = sensor->hw;
+
+	return &hw->orientation;
+}
+
+static const
+struct iio_chan_spec_ext_info __maybe_unused st_lsm6dsx_accel_ext_info[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_lsm6dsx_get_mount_matrix),
+	{ }
+};
+
+#endif /* ST_LSM6DSX_H */