[mirror_ubuntu-jammy-kernel.git] / include / linux / iio / common / st_sensors.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * STMicroelectronics sensors library driver
 *
 * Copyright 2012-2013 STMicroelectronics Inc.
 *
 * Denis Ciocca <denis.ciocca@st.com>
 */

#ifndef ST_SENSORS_H
#define ST_SENSORS_H

#include <linux/i2c.h>
#include <linux/spi/spi.h>
#include <linux/irqreturn.h>
#include <linux/iio/trigger.h>
#include <linux/bitops.h>
#include <linux/regulator/consumer.h>

#include <linux/platform_data/st_sensors_pdata.h>

#define ST_SENSORS_TX_MAX_LENGTH		2
#define ST_SENSORS_RX_MAX_LENGTH		6

#define ST_SENSORS_ODR_LIST_MAX			10
#define ST_SENSORS_FULLSCALE_AVL_MAX		10

#define ST_SENSORS_NUMBER_ALL_CHANNELS		4
#define ST_SENSORS_ENABLE_ALL_AXIS		0x07
#define ST_SENSORS_SCAN_X			0
#define ST_SENSORS_SCAN_Y			1
#define ST_SENSORS_SCAN_Z			2
#define ST_SENSORS_DEFAULT_POWER_ON_VALUE	0x01
#define ST_SENSORS_DEFAULT_POWER_OFF_VALUE	0x00
#define ST_SENSORS_DEFAULT_WAI_ADDRESS		0x0f
#define ST_SENSORS_DEFAULT_AXIS_ADDR		0x20
#define ST_SENSORS_DEFAULT_AXIS_MASK		0x07
#define ST_SENSORS_DEFAULT_AXIS_N_BIT		3
#define ST_SENSORS_DEFAULT_STAT_ADDR		0x27

#define ST_SENSORS_MAX_NAME			17
#define ST_SENSORS_MAX_4WAI			8

#define ST_SENSORS_LSM_CHANNELS(device_type, mask, index, mod, \
					ch2, s, endian, rbits, sbits, addr) \
{ \
	.type = device_type, \
	.modified = mod, \
	.info_mask_separate = mask, \
	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
	.scan_index = index, \
	.channel2 = ch2, \
	.address = addr, \
	.scan_type = { \
		.sign = s, \
		.realbits = rbits, \
		.shift = sbits - rbits, \
		.storagebits = sbits, \
		.endianness = endian, \
	}, \
}

#define ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL() \
		IIO_DEV_ATTR_SAMP_FREQ_AVAIL( \
			st_sensors_sysfs_sampling_frequency_avail)

#define ST_SENSORS_DEV_ATTR_SCALE_AVAIL(name) \
		IIO_DEVICE_ATTR(name, S_IRUGO, \
			st_sensors_sysfs_scale_avail, NULL , 0);

struct st_sensor_odr_avl {
	unsigned int hz;
	u8 value;
};

struct st_sensor_odr {
	u8 addr;
	u8 mask;
	struct st_sensor_odr_avl odr_avl[ST_SENSORS_ODR_LIST_MAX];
};

struct st_sensor_power {
	u8 addr;
	u8 mask;
	u8 value_off;
	u8 value_on;
};

struct st_sensor_axis {
	u8 addr;
	u8 mask;
};

struct st_sensor_fullscale_avl {
	unsigned int num;
	u8 value;
	unsigned int gain;
	unsigned int gain2;
};

struct st_sensor_fullscale {
	u8 addr;
	u8 mask;
	struct st_sensor_fullscale_avl fs_avl[ST_SENSORS_FULLSCALE_AVL_MAX];
};

struct st_sensor_sim {
	u8 addr;
	u8 value;
};

/**
 * struct st_sensor_bdu - ST sensor device block data update
 * @addr: address of the register.
 * @mask: mask to write the block data update flag.
 */
struct st_sensor_bdu {
	u8 addr;
	u8 mask;
};

/**
 * struct st_sensor_das - ST sensor device data alignment selection
 * @addr: address of the register.
 * @mask: mask to write the das flag for left alignment.
 */
struct st_sensor_das {
	u8 addr;
	u8 mask;
};

/**
 * struct st_sensor_int_drdy - ST sensor device drdy line parameters
 * @addr: address of INT drdy register.
 * @mask: mask to enable drdy line.
 * @addr_od: address to enable/disable Open Drain on the INT line.
 * @mask_od: mask to enable/disable Open Drain on the INT line.
 */
struct st_sensor_int_drdy {
	u8 addr;
	u8 mask;
	u8 addr_od;
	u8 mask_od;
};

/**
 * struct st_sensor_data_ready_irq - ST sensor device data-ready interrupt
 * struct int1 - data-ready configuration register for INT1 pin.
 * struct int2 - data-ready configuration register for INT2 pin.
 * @addr_ihl: address to enable/disable active low on the INT lines.
 * @mask_ihl: mask to enable/disable active low on the INT lines.
 * struct stat_drdy - status register of DRDY (data ready) interrupt.
 * struct ig1 - represents the Interrupt Generator 1 of sensors.
 * @en_addr: address of the enable ig1 register.
 * @en_mask: mask to write the on/off value for enable.
 */
struct st_sensor_data_ready_irq {
	struct st_sensor_int_drdy int1;
	struct st_sensor_int_drdy int2;
	u8 addr_ihl;
	u8 mask_ihl;
	struct {
		u8 addr;
		u8 mask;
	} stat_drdy;
	struct {
		u8 en_addr;
		u8 en_mask;
	} ig1;
};

/**
 * struct st_sensor_transfer_buffer - ST sensor device I/O buffer
 * @buf_lock: Mutex to protect rx and tx buffers.
 * @tx_buf: Buffer used by SPI transfer function to send data to the sensors.
 *	This buffer is used to avoid DMA not-aligned issue.
 * @rx_buf: Buffer used by SPI transfer to receive data from sensors.
 *	This buffer is used to avoid DMA not-aligned issue.
 */
struct st_sensor_transfer_buffer {
	struct mutex buf_lock;
	u8 rx_buf[ST_SENSORS_RX_MAX_LENGTH];
	u8 tx_buf[ST_SENSORS_TX_MAX_LENGTH] ____cacheline_aligned;
};

/**
 * struct st_sensor_transfer_function - ST sensor device I/O function
 * @read_byte: Function used to read one byte.
 * @write_byte: Function used to write one byte.
 * @read_multiple_byte: Function used to read multiple byte.
 */
struct st_sensor_transfer_function {
	int (*read_byte) (struct st_sensor_transfer_buffer *tb,
				struct device *dev, u8 reg_addr, u8 *res_byte);
	int (*write_byte) (struct st_sensor_transfer_buffer *tb,
				struct device *dev, u8 reg_addr, u8 data);
	int (*read_multiple_byte) (struct st_sensor_transfer_buffer *tb,
		struct device *dev, u8 reg_addr, int len, u8 *data,
							bool multiread_bit);
};

/**
 * struct st_sensor_settings - ST specific sensor settings
 * @wai: Contents of WhoAmI register.
 * @wai_addr: The address of WhoAmI register.
 * @sensors_supported: List of supported sensors by struct itself.
 * @ch: IIO channels for the sensor.
 * @odr: Output data rate register and ODR list available.
 * @pw: Power register of the sensor.
 * @enable_axis: Enable one or more axis of the sensor.
 * @fs: Full scale register and full scale list available.
 * @bdu: Block data update register.
 * @das: Data Alignment Selection register.
 * @drdy_irq: Data ready register of the sensor.
 * @sim: SPI serial interface mode register of the sensor.
 * @multi_read_bit: Use or not particular bit for [I2C/SPI] multi-read.
 * @bootime: samples to discard when sensor passing from power-down to power-up.
 */
struct st_sensor_settings {
	u8 wai;
	u8 wai_addr;
	char sensors_supported[ST_SENSORS_MAX_4WAI][ST_SENSORS_MAX_NAME];
	struct iio_chan_spec *ch;
	int num_ch;
	struct st_sensor_odr odr;
	struct st_sensor_power pw;
	struct st_sensor_axis enable_axis;
	struct st_sensor_fullscale fs;
	struct st_sensor_bdu bdu;
	struct st_sensor_das das;
	struct st_sensor_data_ready_irq drdy_irq;
	struct st_sensor_sim sim;
	bool multi_read_bit;
	unsigned int bootime;
};

/**
 * struct st_sensor_data - ST sensor device status
 * @dev: Pointer to instance of struct device (I2C or SPI).
 * @trig: The trigger in use by the core driver.
 * @sensor_settings: Pointer to the specific sensor settings in use.
 * @current_fullscale: Maximum range of measure by the sensor.
 * @vdd: Pointer to sensor's Vdd power supply
 * @vdd_io: Pointer to sensor's Vdd-IO power supply
 * @enabled: Status of the sensor (false->off, true->on).
 * @multiread_bit: Use or not particular bit for [I2C/SPI] multiread.
 * @buffer_data: Data used by buffer part.
 * @odr: Output data rate of the sensor [Hz].
 * num_data_channels: Number of data channels used in buffer.
 * @drdy_int_pin: Redirect DRDY on pin 1 (1) or pin 2 (2).
 * @int_pin_open_drain: Set the interrupt/DRDY to open drain.
 * @get_irq_data_ready: Function to get the IRQ used for data ready signal.
 * @tf: Transfer function structure used by I/O operations.
 * @tb: Transfer buffers and mutex used by I/O operations.
 * @edge_irq: the IRQ triggers on edges and need special handling.
 * @hw_irq_trigger: if we're using the hardware interrupt on the sensor.
 * @hw_timestamp: Latest timestamp from the interrupt handler, when in use.
 */
struct st_sensor_data {
	struct device *dev;
	struct iio_trigger *trig;
	struct iio_mount_matrix *mount_matrix;
	struct st_sensor_settings *sensor_settings;
	struct st_sensor_fullscale_avl *current_fullscale;
	struct regulator *vdd;
	struct regulator *vdd_io;

	bool enabled;
	bool multiread_bit;

	char *buffer_data;

	unsigned int odr;
	unsigned int num_data_channels;

	u8 drdy_int_pin;
	bool int_pin_open_drain;

	unsigned int (*get_irq_data_ready) (struct iio_dev *indio_dev);

	const struct st_sensor_transfer_function *tf;
	struct st_sensor_transfer_buffer tb;

	bool edge_irq;
	bool hw_irq_trigger;
	s64 hw_timestamp;
};

#ifdef CONFIG_IIO_BUFFER
irqreturn_t st_sensors_trigger_handler(int irq, void *p);
#endif

#ifdef CONFIG_IIO_TRIGGER
int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
				const struct iio_trigger_ops *trigger_ops);

void st_sensors_deallocate_trigger(struct iio_dev *indio_dev);
int st_sensors_validate_device(struct iio_trigger *trig,
			       struct iio_dev *indio_dev);
#else
static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
				const struct iio_trigger_ops *trigger_ops)
{
	return 0;
}
static inline void st_sensors_deallocate_trigger(struct iio_dev *indio_dev)
{
	return;
}
#define st_sensors_validate_device NULL
#endif

int st_sensors_init_sensor(struct iio_dev *indio_dev,
					struct st_sensors_platform_data *pdata);

int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable);

int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable);

int st_sensors_power_enable(struct iio_dev *indio_dev);

void st_sensors_power_disable(struct iio_dev *indio_dev);

int st_sensors_debugfs_reg_access(struct iio_dev *indio_dev,
				  unsigned reg, unsigned writeval,
				  unsigned *readval);

int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr);

int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable);

int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale);

int st_sensors_read_info_raw(struct iio_dev *indio_dev,
				struct iio_chan_spec const *ch, int *val);

int st_sensors_check_device_support(struct iio_dev *indio_dev,
	int num_sensors_list, const struct st_sensor_settings *sensor_settings);

ssize_t st_sensors_sysfs_sampling_frequency_avail(struct device *dev,
				struct device_attribute *attr, char *buf);

ssize_t st_sensors_sysfs_scale_avail(struct device *dev,
				struct device_attribute *attr, char *buf);

#ifdef CONFIG_OF
void st_sensors_of_name_probe(struct device *dev,
			      const struct of_device_id *match,
			      char *name, int len);
#else
static inline void st_sensors_of_name_probe(struct device *dev,
					    const struct of_device_id *match,
					    char *name, int len)
{
}
#endif

#endif /* ST_SENSORS_H */
Commit	Line	Data
fda8d26e	1	/* SPDX-License-Identifier: GPL-2.0-only */
23491b51 DC	2	/*
	3	* STMicroelectronics sensors library driver
	4	*
	5	* Copyright 2012-2013 STMicroelectronics Inc.
	6	*
	7	* Denis Ciocca <denis.ciocca@st.com>
23491b51 DC	8	*/
	9
	10	#ifndef ST_SENSORS_H
	11	#define ST_SENSORS_H
	12
	13	#include <linux/i2c.h>
	14	#include <linux/spi/spi.h>
	15	#include <linux/irqreturn.h>
	16	#include <linux/iio/trigger.h>
5ea86494	17	#include <linux/bitops.h>
77448761	18	#include <linux/regulator/consumer.h>
23491b51	19
23cde4d6 DC	20	#include <linux/platform_data/st_sensors_pdata.h>
23cde4d6 DC	21
23491b51 DC	22	#define ST_SENSORS_TX_MAX_LENGTH 2
	23	#define ST_SENSORS_RX_MAX_LENGTH 6
	24
	25	#define ST_SENSORS_ODR_LIST_MAX 10
	26	#define ST_SENSORS_FULLSCALE_AVL_MAX 10
	27
	28	#define ST_SENSORS_NUMBER_ALL_CHANNELS 4
23491b51	29	#define ST_SENSORS_ENABLE_ALL_AXIS 0x07
23491b51 DC	30	#define ST_SENSORS_SCAN_X 0
	31	#define ST_SENSORS_SCAN_Y 1
	32	#define ST_SENSORS_SCAN_Z 2
23491b51 DC	33	#define ST_SENSORS_DEFAULT_POWER_ON_VALUE 0x01
	34	#define ST_SENSORS_DEFAULT_POWER_OFF_VALUE 0x00
	35	#define ST_SENSORS_DEFAULT_WAI_ADDRESS 0x0f
	36	#define ST_SENSORS_DEFAULT_AXIS_ADDR 0x20
	37	#define ST_SENSORS_DEFAULT_AXIS_MASK 0x07
	38	#define ST_SENSORS_DEFAULT_AXIS_N_BIT 3
97865fe4	39	#define ST_SENSORS_DEFAULT_STAT_ADDR 0x27
23491b51 DC	40
23491b51 DC	41	#define ST_SENSORS_MAX_NAME 17
49b62373	42	#define ST_SENSORS_MAX_4WAI 8
23491b51	43
762011d6 DC	44	#define ST_SENSORS_LSM_CHANNELS(device_type, mask, index, mod, \
762011d6 DC	45	ch2, s, endian, rbits, sbits, addr) \
23491b51 DC	46	{ \
23491b51 DC	47	.type = device_type, \
762011d6 DC	48	.modified = mod, \
762011d6 DC	49	.info_mask_separate = mask, \
2d239c9e	50	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
23491b51	51	.scan_index = index, \
762011d6	52	.channel2 = ch2, \
23491b51 DC	53	.address = addr, \
23491b51 DC	54	.scan_type = { \
762011d6 DC	55	.sign = s, \
	56	.realbits = rbits, \
	57	.shift = sbits - rbits, \
	58	.storagebits = sbits, \
23491b51 DC	59	.endianness = endian, \
	60	}, \
	61	}
	62
23491b51 DC	63	#define ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL() \
	64	IIO_DEV_ATTR_SAMP_FREQ_AVAIL( \
	65	st_sensors_sysfs_sampling_frequency_avail)
	66
	67	#define ST_SENSORS_DEV_ATTR_SCALE_AVAIL(name) \
	68	IIO_DEVICE_ATTR(name, S_IRUGO, \
	69	st_sensors_sysfs_scale_avail, NULL , 0);
	70
	71	struct st_sensor_odr_avl {
	72	unsigned int hz;
	73	u8 value;
	74	};
	75
	76	struct st_sensor_odr {
	77	u8 addr;
	78	u8 mask;
	79	struct st_sensor_odr_avl odr_avl[ST_SENSORS_ODR_LIST_MAX];
	80	};
	81
	82	struct st_sensor_power {
	83	u8 addr;
	84	u8 mask;
	85	u8 value_off;
	86	u8 value_on;
	87	};
	88
	89	struct st_sensor_axis {
	90	u8 addr;
	91	u8 mask;
	92	};
	93
	94	struct st_sensor_fullscale_avl {
	95	unsigned int num;
	96	u8 value;
	97	unsigned int gain;
	98	unsigned int gain2;
	99	};
	100
	101	struct st_sensor_fullscale {
	102	u8 addr;
	103	u8 mask;
	104	struct st_sensor_fullscale_avl fs_avl[ST_SENSORS_FULLSCALE_AVL_MAX];
	105	};
	106
a7b8829d LB	107	struct st_sensor_sim {
	108	u8 addr;
	109	u8 value;
	110	};
	111
23491b51 DC	112	/**
	113	* struct st_sensor_bdu - ST sensor device block data update
	114	* @addr: address of the register.
	115	* @mask: mask to write the block data update flag.
	116	*/
	117	struct st_sensor_bdu {
	118	u8 addr;
	119	u8 mask;
	120	};
	121
65e4345c LW	122	/**
	123	* struct st_sensor_das - ST sensor device data alignment selection
	124	* @addr: address of the register.
	125	* @mask: mask to write the das flag for left alignment.
	126	*/
	127	struct st_sensor_das {
	128	u8 addr;
	129	u8 mask;
	130	};
	131
a542f9a0 LB	132	/**
	133	* struct st_sensor_int_drdy - ST sensor device drdy line parameters
	134	* @addr: address of INT drdy register.
	135	* @mask: mask to enable drdy line.
	136	* @addr_od: address to enable/disable Open Drain on the INT line.
	137	* @mask_od: mask to enable/disable Open Drain on the INT line.
	138	*/
	139	struct st_sensor_int_drdy {
	140	u8 addr;
	141	u8 mask;
	142	u8 addr_od;
	143	u8 mask_od;
	144	};
	145
23491b51 DC	146	/**
23491b51 DC	147	* struct st_sensor_data_ready_irq - ST sensor device data-ready interrupt
75d4c6d2 LB	148	* struct int1 - data-ready configuration register for INT1 pin.
75d4c6d2 LB	149	* struct int2 - data-ready configuration register for INT2 pin.
a9fd053b LW	150	* @addr_ihl: address to enable/disable active low on the INT lines.
a9fd053b LW	151	* @mask_ihl: mask to enable/disable active low on the INT lines.
e72a0601	152	* struct stat_drdy - status register of DRDY (data ready) interrupt.
23491b51 DC	153	* struct ig1 - represents the Interrupt Generator 1 of sensors.
	154	* @en_addr: address of the enable ig1 register.
	155	* @en_mask: mask to write the on/off value for enable.
	156	*/
	157	struct st_sensor_data_ready_irq {
a542f9a0 LB	158	struct st_sensor_int_drdy int1;
a542f9a0 LB	159	struct st_sensor_int_drdy int2;
a9fd053b LW	160	u8 addr_ihl;
a9fd053b LW	161	u8 mask_ihl;
e72a0601 LB	162	struct {
	163	u8 addr;
	164	u8 mask;
	165	} stat_drdy;
23491b51 DC	166	struct {
	167	u8 en_addr;
	168	u8 en_mask;
	169	} ig1;
	170	};
	171
	172	/**
	173	* struct st_sensor_transfer_buffer - ST sensor device I/O buffer
	174	* @buf_lock: Mutex to protect rx and tx buffers.
	175	* @tx_buf: Buffer used by SPI transfer function to send data to the sensors.
	176	* This buffer is used to avoid DMA not-aligned issue.
	177	* @rx_buf: Buffer used by SPI transfer to receive data from sensors.
	178	* This buffer is used to avoid DMA not-aligned issue.
	179	*/
	180	struct st_sensor_transfer_buffer {
	181	struct mutex buf_lock;
	182	u8 rx_buf[ST_SENSORS_RX_MAX_LENGTH];
	183	u8 tx_buf[ST_SENSORS_TX_MAX_LENGTH] ____cacheline_aligned;
	184	};
	185
	186	/**
	187	* struct st_sensor_transfer_function - ST sensor device I/O function
	188	* @read_byte: Function used to read one byte.
	189	* @write_byte: Function used to write one byte.
	190	* @read_multiple_byte: Function used to read multiple byte.
	191	*/
	192	struct st_sensor_transfer_function {
	193	int (read_byte) (struct st_sensor_transfer_buffer tb,
	194	struct device dev, u8 reg_addr, u8 res_byte);
	195	int (write_byte) (struct st_sensor_transfer_buffer tb,
	196	struct device *dev, u8 reg_addr, u8 data);
	197	int (read_multiple_byte) (struct st_sensor_transfer_buffer tb,
	198	struct device dev, u8 reg_addr, int len, u8 data,
	199	bool multiread_bit);
	200	};
	201
	202	/**
a7ee8839	203	* struct st_sensor_settings - ST specific sensor settings
23491b51	204	* @wai: Contents of WhoAmI register.
bc27381e	205	* @wai_addr: The address of WhoAmI register.
23491b51 DC	206	* @sensors_supported: List of supported sensors by struct itself.
	207	* @ch: IIO channels for the sensor.
	208	* @odr: Output data rate register and ODR list available.
	209	* @pw: Power register of the sensor.
	210	* @enable_axis: Enable one or more axis of the sensor.
	211	* @fs: Full scale register and full scale list available.
	212	* @bdu: Block data update register.
65e4345c	213	* @das: Data Alignment Selection register.
23491b51	214	* @drdy_irq: Data ready register of the sensor.
a7b8829d	215	* @sim: SPI serial interface mode register of the sensor.
23491b51 DC	216	* @multi_read_bit: Use or not particular bit for [I2C/SPI] multi-read.
	217	* @bootime: samples to discard when sensor passing from power-down to power-up.
	218	*/
a7ee8839	219	struct st_sensor_settings {
23491b51	220	u8 wai;
bc27381e	221	u8 wai_addr;
23491b51 DC	222	char sensors_supported[ST_SENSORS_MAX_4WAI][ST_SENSORS_MAX_NAME];
23491b51 DC	223	struct iio_chan_spec *ch;
ea01f2c1	224	int num_ch;
23491b51 DC	225	struct st_sensor_odr odr;
	226	struct st_sensor_power pw;
	227	struct st_sensor_axis enable_axis;
	228	struct st_sensor_fullscale fs;
	229	struct st_sensor_bdu bdu;
65e4345c	230	struct st_sensor_das das;
23491b51	231	struct st_sensor_data_ready_irq drdy_irq;
a7b8829d	232	struct st_sensor_sim sim;
23491b51 DC	233	bool multi_read_bit;
	234	unsigned int bootime;
	235	};
	236
	237	/**
	238	* struct st_sensor_data - ST sensor device status
	239	* @dev: Pointer to instance of struct device (I2C or SPI).
	240	* @trig: The trigger in use by the core driver.
a7ee8839	241	* @sensor_settings: Pointer to the specific sensor settings in use.
23491b51	242	* @current_fullscale: Maximum range of measure by the sensor.
77448761	243	* @vdd: Pointer to sensor's Vdd power supply
71e1980c	244	* @vdd_io: Pointer to sensor's Vdd-IO power supply
23491b51 DC	245	* @enabled: Status of the sensor (false->off, true->on).
	246	* @multiread_bit: Use or not particular bit for [I2C/SPI] multiread.
	247	* @buffer_data: Data used by buffer part.
	248	* @odr: Output data rate of the sensor [Hz].
607a568a	249	* num_data_channels: Number of data channels used in buffer.
23cde4d6	250	* @drdy_int_pin: Redirect DRDY on pin 1 (1) or pin 2 (2).
0e6f6871	251	* @int_pin_open_drain: Set the interrupt/DRDY to open drain.
23491b51 DC	252	* @get_irq_data_ready: Function to get the IRQ used for data ready signal.
	253	* @tf: Transfer function structure used by I/O operations.
	254	* @tb: Transfer buffers and mutex used by I/O operations.
90efe055	255	* @edge_irq: the IRQ triggers on edges and need special handling.
65925b65 LW	256	* @hw_irq_trigger: if we're using the hardware interrupt on the sensor.
65925b65 LW	257	* @hw_timestamp: Latest timestamp from the interrupt handler, when in use.
23491b51 DC	258	*/
	259	struct st_sensor_data {
	260	struct device *dev;
	261	struct iio_trigger *trig;
f38ab20b	262	struct iio_mount_matrix *mount_matrix;
a7ee8839	263	struct st_sensor_settings *sensor_settings;
23491b51	264	struct st_sensor_fullscale_avl *current_fullscale;
77448761	265	struct regulator *vdd;
71e1980c	266	struct regulator *vdd_io;
23491b51 DC	267
	268	bool enabled;
	269	bool multiread_bit;
	270
	271	char *buffer_data;
	272
	273	unsigned int odr;
607a568a	274	unsigned int num_data_channels;
23491b51	275
23cde4d6	276	u8 drdy_int_pin;
0e6f6871	277	bool int_pin_open_drain;
23cde4d6	278
23491b51 DC	279	unsigned int (get_irq_data_ready) (struct iio_dev indio_dev);
	280
	281	const struct st_sensor_transfer_function *tf;
	282	struct st_sensor_transfer_buffer tb;
65925b65	283
90efe055	284	bool edge_irq;
65925b65 LW	285	bool hw_irq_trigger;
65925b65 LW	286	s64 hw_timestamp;
23491b51 DC	287	};
	288
	289	#ifdef CONFIG_IIO_BUFFER
5a4d7291	290	irqreturn_t st_sensors_trigger_handler(int irq, void *p);
5a4d7291 GR	291	#endif
	292
	293	#ifdef CONFIG_IIO_TRIGGER
23491b51 DC	294	int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
	295	const struct iio_trigger_ops *trigger_ops);
	296
	297	void st_sensors_deallocate_trigger(struct iio_dev *indio_dev);
65925b65 LW	298	int st_sensors_validate_device(struct iio_trigger *trig,
65925b65 LW	299	struct iio_dev *indio_dev);
91ffbabf DC	300	#else
	301	static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
	302	const struct iio_trigger_ops *trigger_ops)
	303	{
	304	return 0;
	305	}
	306	static inline void st_sensors_deallocate_trigger(struct iio_dev *indio_dev)
	307	{
	308	return;
	309	}
65925b65	310	#define st_sensors_validate_device NULL
23491b51 DC	311	#endif
23491b51 DC	312
23cde4d6 DC	313	int st_sensors_init_sensor(struct iio_dev *indio_dev,
23cde4d6 DC	314	struct st_sensors_platform_data *pdata);
23491b51 DC	315
	316	int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable);
	317
	318	int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable);
	319
14f295c8	320	int st_sensors_power_enable(struct iio_dev *indio_dev);
ea7e586b LW	321
	322	void st_sensors_power_disable(struct iio_dev *indio_dev);
	323
a0175b9c LW	324	int st_sensors_debugfs_reg_access(struct iio_dev *indio_dev,
	325	unsigned reg, unsigned writeval,
	326	unsigned *readval);
	327
23491b51 DC	328	int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr);
	329
	330	int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable);
	331
	332	int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale);
	333
	334	int st_sensors_read_info_raw(struct iio_dev *indio_dev,
	335	struct iio_chan_spec const ch, int val);
	336
	337	int st_sensors_check_device_support(struct iio_dev *indio_dev,
a7ee8839	338	int num_sensors_list, const struct st_sensor_settings *sensor_settings);
23491b51	339
23491b51 DC	340	ssize_t st_sensors_sysfs_sampling_frequency_avail(struct device *dev,
	341	struct device_attribute attr, char buf);
	342
	343	ssize_t st_sensors_sysfs_scale_avail(struct device *dev,
	344	struct device_attribute attr, char buf);
	345
250bbbdb LB	346	#ifdef CONFIG_OF
	347	void st_sensors_of_name_probe(struct device *dev,
	348	const struct of_device_id *match,
	349	char *name, int len);
	350	#else
	351	static inline void st_sensors_of_name_probe(struct device *dev,
	352	const struct of_device_id *match,
	353	char *name, int len)
	354	{
	355	}
	356	#endif
	357
23491b51	358	#endif /* ST_SENSORS_H */