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

/*
 * STMicroelectronics sensors library driver
 *
 * Copyright 2012-2013 STMicroelectronics Inc.
 *
 * Denis Ciocca <denis.ciocca@st.com>
 *
 * Licensed under the GPL-2.
 */

#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			7

#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_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_data_ready_irq - ST sensor device data-ready interrupt
 * @addr: address of the register.
 * @mask_int1: mask to enable/disable IRQ on INT1 pin.
 * @mask_int2: mask to enable/disable IRQ on 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.
 * @addr_stat_drdy: address to read status 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 {
	u8 addr;
	u8 mask_int1;
	u8 mask_int2;
	u8 addr_ihl;
	u8 mask_ihl;
	u8 addr_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.
 * @drdy_irq: Data ready 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_data_ready_irq drdy_irq;
	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).
 * @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.
 */
struct st_sensor_data {
	struct device *dev;
	struct iio_trigger *trig;
	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;

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

	const struct st_sensor_transfer_function *tf;
	struct st_sensor_transfer_buffer tb;
};

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

int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf);
#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);

#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;
}
#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);

void 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);

#endif /* ST_SENSORS_H */
Commit	Line	Data
23491b51 DC	1	/*
	2	* STMicroelectronics sensors library driver
	3	*
	4	* Copyright 2012-2013 STMicroelectronics Inc.
	5	*
	6	* Denis Ciocca <denis.ciocca@st.com>
	7	*
	8	* Licensed under the GPL-2.
	9	*/
	10
	11	#ifndef ST_SENSORS_H
	12	#define ST_SENSORS_H
	13
	14	#include <linux/i2c.h>
	15	#include <linux/spi/spi.h>
	16	#include <linux/irqreturn.h>
	17	#include <linux/iio/trigger.h>
5ea86494	18	#include <linux/bitops.h>
77448761	19	#include <linux/regulator/consumer.h>
23491b51	20
23cde4d6 DC	21	#include <linux/platform_data/st_sensors_pdata.h>
23cde4d6 DC	22
23491b51 DC	23	#define ST_SENSORS_TX_MAX_LENGTH 2
	24	#define ST_SENSORS_RX_MAX_LENGTH 6
	25
	26	#define ST_SENSORS_ODR_LIST_MAX 10
	27	#define ST_SENSORS_FULLSCALE_AVL_MAX 10
	28
	29	#define ST_SENSORS_NUMBER_ALL_CHANNELS 4
23491b51	30	#define ST_SENSORS_ENABLE_ALL_AXIS 0x07
23491b51 DC	31	#define ST_SENSORS_SCAN_X 0
	32	#define ST_SENSORS_SCAN_Y 1
	33	#define ST_SENSORS_SCAN_Z 2
23491b51 DC	34	#define ST_SENSORS_DEFAULT_POWER_ON_VALUE 0x01
	35	#define ST_SENSORS_DEFAULT_POWER_OFF_VALUE 0x00
	36	#define ST_SENSORS_DEFAULT_WAI_ADDRESS 0x0f
	37	#define ST_SENSORS_DEFAULT_AXIS_ADDR 0x20
	38	#define ST_SENSORS_DEFAULT_AXIS_MASK 0x07
	39	#define ST_SENSORS_DEFAULT_AXIS_N_BIT 3
97865fe4	40	#define ST_SENSORS_DEFAULT_STAT_ADDR 0x27
23491b51 DC	41
	42	#define ST_SENSORS_MAX_NAME 17
	43	#define ST_SENSORS_MAX_4WAI 7
	44
762011d6 DC	45	#define ST_SENSORS_LSM_CHANNELS(device_type, mask, index, mod, \
762011d6 DC	46	ch2, s, endian, rbits, sbits, addr) \
23491b51 DC	47	{ \
23491b51 DC	48	.type = device_type, \
762011d6 DC	49	.modified = mod, \
762011d6 DC	50	.info_mask_separate = mask, \
2d239c9e	51	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
23491b51	52	.scan_index = index, \
762011d6	53	.channel2 = ch2, \
23491b51 DC	54	.address = addr, \
23491b51 DC	55	.scan_type = { \
762011d6 DC	56	.sign = s, \
	57	.realbits = rbits, \
	58	.shift = sbits - rbits, \
	59	.storagebits = sbits, \
23491b51 DC	60	.endianness = endian, \
	61	}, \
	62	}
	63
23491b51 DC	64	#define ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL() \
	65	IIO_DEV_ATTR_SAMP_FREQ_AVAIL( \
	66	st_sensors_sysfs_sampling_frequency_avail)
	67
	68	#define ST_SENSORS_DEV_ATTR_SCALE_AVAIL(name) \
	69	IIO_DEVICE_ATTR(name, S_IRUGO, \
	70	st_sensors_sysfs_scale_avail, NULL , 0);
	71
	72	struct st_sensor_odr_avl {
	73	unsigned int hz;
	74	u8 value;
	75	};
	76
	77	struct st_sensor_odr {
	78	u8 addr;
	79	u8 mask;
	80	struct st_sensor_odr_avl odr_avl[ST_SENSORS_ODR_LIST_MAX];
	81	};
	82
	83	struct st_sensor_power {
	84	u8 addr;
	85	u8 mask;
	86	u8 value_off;
	87	u8 value_on;
	88	};
	89
	90	struct st_sensor_axis {
	91	u8 addr;
	92	u8 mask;
	93	};
	94
	95	struct st_sensor_fullscale_avl {
	96	unsigned int num;
	97	u8 value;
	98	unsigned int gain;
	99	unsigned int gain2;
	100	};
	101
	102	struct st_sensor_fullscale {
	103	u8 addr;
	104	u8 mask;
	105	struct st_sensor_fullscale_avl fs_avl[ST_SENSORS_FULLSCALE_AVL_MAX];
	106	};
	107
	108	/**
	109	* struct st_sensor_bdu - ST sensor device block data update
	110	* @addr: address of the register.
	111	* @mask: mask to write the block data update flag.
	112	*/
	113	struct st_sensor_bdu {
	114	u8 addr;
	115	u8 mask;
	116	};
	117
	118	/**
	119	* struct st_sensor_data_ready_irq - ST sensor device data-ready interrupt
	120	* @addr: address of the register.
23cde4d6 DC	121	* @mask_int1: mask to enable/disable IRQ on INT1 pin.
23cde4d6 DC	122	* @mask_int2: mask to enable/disable IRQ on INT2 pin.
a9fd053b LW	123	* @addr_ihl: address to enable/disable active low on the INT lines.
a9fd053b LW	124	* @mask_ihl: mask to enable/disable active low on the INT lines.
97865fe4	125	* @addr_stat_drdy: address to read status of DRDY (data ready) interrupt
23491b51 DC	126	* struct ig1 - represents the Interrupt Generator 1 of sensors.
	127	* @en_addr: address of the enable ig1 register.
	128	* @en_mask: mask to write the on/off value for enable.
	129	*/
	130	struct st_sensor_data_ready_irq {
	131	u8 addr;
23cde4d6 DC	132	u8 mask_int1;
23cde4d6 DC	133	u8 mask_int2;
a9fd053b LW	134	u8 addr_ihl;
a9fd053b LW	135	u8 mask_ihl;
97865fe4	136	u8 addr_stat_drdy;
23491b51 DC	137	struct {
	138	u8 en_addr;
	139	u8 en_mask;
	140	} ig1;
	141	};
	142
	143	/**
	144	* struct st_sensor_transfer_buffer - ST sensor device I/O buffer
	145	* @buf_lock: Mutex to protect rx and tx buffers.
	146	* @tx_buf: Buffer used by SPI transfer function to send data to the sensors.
	147	* This buffer is used to avoid DMA not-aligned issue.
	148	* @rx_buf: Buffer used by SPI transfer to receive data from sensors.
	149	* This buffer is used to avoid DMA not-aligned issue.
	150	*/
	151	struct st_sensor_transfer_buffer {
	152	struct mutex buf_lock;
	153	u8 rx_buf[ST_SENSORS_RX_MAX_LENGTH];
	154	u8 tx_buf[ST_SENSORS_TX_MAX_LENGTH] ____cacheline_aligned;
	155	};
	156
	157	/**
	158	* struct st_sensor_transfer_function - ST sensor device I/O function
	159	* @read_byte: Function used to read one byte.
	160	* @write_byte: Function used to write one byte.
	161	* @read_multiple_byte: Function used to read multiple byte.
	162	*/
	163	struct st_sensor_transfer_function {
	164	int (read_byte) (struct st_sensor_transfer_buffer tb,
	165	struct device dev, u8 reg_addr, u8 res_byte);
	166	int (write_byte) (struct st_sensor_transfer_buffer tb,
	167	struct device *dev, u8 reg_addr, u8 data);
	168	int (read_multiple_byte) (struct st_sensor_transfer_buffer tb,
	169	struct device dev, u8 reg_addr, int len, u8 data,
	170	bool multiread_bit);
	171	};
	172
	173	/**
a7ee8839	174	* struct st_sensor_settings - ST specific sensor settings
23491b51	175	* @wai: Contents of WhoAmI register.
bc27381e	176	* @wai_addr: The address of WhoAmI register.
23491b51 DC	177	* @sensors_supported: List of supported sensors by struct itself.
	178	* @ch: IIO channels for the sensor.
	179	* @odr: Output data rate register and ODR list available.
	180	* @pw: Power register of the sensor.
	181	* @enable_axis: Enable one or more axis of the sensor.
	182	* @fs: Full scale register and full scale list available.
	183	* @bdu: Block data update register.
	184	* @drdy_irq: Data ready register of the sensor.
	185	* @multi_read_bit: Use or not particular bit for [I2C/SPI] multi-read.
	186	* @bootime: samples to discard when sensor passing from power-down to power-up.
	187	*/
a7ee8839	188	struct st_sensor_settings {
23491b51	189	u8 wai;
bc27381e	190	u8 wai_addr;
23491b51 DC	191	char sensors_supported[ST_SENSORS_MAX_4WAI][ST_SENSORS_MAX_NAME];
23491b51 DC	192	struct iio_chan_spec *ch;
ea01f2c1	193	int num_ch;
23491b51 DC	194	struct st_sensor_odr odr;
	195	struct st_sensor_power pw;
	196	struct st_sensor_axis enable_axis;
	197	struct st_sensor_fullscale fs;
	198	struct st_sensor_bdu bdu;
	199	struct st_sensor_data_ready_irq drdy_irq;
	200	bool multi_read_bit;
	201	unsigned int bootime;
	202	};
	203
	204	/**
	205	* struct st_sensor_data - ST sensor device status
	206	* @dev: Pointer to instance of struct device (I2C or SPI).
	207	* @trig: The trigger in use by the core driver.
a7ee8839	208	* @sensor_settings: Pointer to the specific sensor settings in use.
23491b51	209	* @current_fullscale: Maximum range of measure by the sensor.
77448761	210	* @vdd: Pointer to sensor's Vdd power supply
71e1980c	211	* @vdd_io: Pointer to sensor's Vdd-IO power supply
23491b51 DC	212	* @enabled: Status of the sensor (false->off, true->on).
	213	* @multiread_bit: Use or not particular bit for [I2C/SPI] multiread.
	214	* @buffer_data: Data used by buffer part.
	215	* @odr: Output data rate of the sensor [Hz].
607a568a	216	* num_data_channels: Number of data channels used in buffer.
23cde4d6	217	* @drdy_int_pin: Redirect DRDY on pin 1 (1) or pin 2 (2).
23491b51 DC	218	* @get_irq_data_ready: Function to get the IRQ used for data ready signal.
	219	* @tf: Transfer function structure used by I/O operations.
	220	* @tb: Transfer buffers and mutex used by I/O operations.
	221	*/
	222	struct st_sensor_data {
	223	struct device *dev;
	224	struct iio_trigger *trig;
a7ee8839	225	struct st_sensor_settings *sensor_settings;
23491b51	226	struct st_sensor_fullscale_avl *current_fullscale;
77448761	227	struct regulator *vdd;
71e1980c	228	struct regulator *vdd_io;
23491b51 DC	229
	230	bool enabled;
	231	bool multiread_bit;
	232
	233	char *buffer_data;
	234
	235	unsigned int odr;
607a568a	236	unsigned int num_data_channels;
23491b51	237
23cde4d6 DC	238	u8 drdy_int_pin;
23cde4d6 DC	239
23491b51 DC	240	unsigned int (get_irq_data_ready) (struct iio_dev indio_dev);
	241
	242	const struct st_sensor_transfer_function *tf;
	243	struct st_sensor_transfer_buffer tb;
	244	};
	245
	246	#ifdef CONFIG_IIO_BUFFER
5a4d7291 GR	247	irqreturn_t st_sensors_trigger_handler(int irq, void *p);
	248
	249	int st_sensors_get_buffer_element(struct iio_dev indio_dev, u8 buf);
	250	#endif
	251
	252	#ifdef CONFIG_IIO_TRIGGER
23491b51 DC	253	int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
	254	const struct iio_trigger_ops *trigger_ops);
	255
	256	void st_sensors_deallocate_trigger(struct iio_dev *indio_dev);
	257
91ffbabf DC	258	#else
	259	static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
	260	const struct iio_trigger_ops *trigger_ops)
	261	{
	262	return 0;
	263	}
	264	static inline void st_sensors_deallocate_trigger(struct iio_dev *indio_dev)
	265	{
	266	return;
	267	}
23491b51 DC	268	#endif
23491b51 DC	269
23cde4d6 DC	270	int st_sensors_init_sensor(struct iio_dev *indio_dev,
23cde4d6 DC	271	struct st_sensors_platform_data *pdata);
23491b51 DC	272
	273	int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable);
	274
	275	int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable);
	276
ea7e586b LW	277	void st_sensors_power_enable(struct iio_dev *indio_dev);
	278
	279	void st_sensors_power_disable(struct iio_dev *indio_dev);
	280
a0175b9c LW	281	int st_sensors_debugfs_reg_access(struct iio_dev *indio_dev,
	282	unsigned reg, unsigned writeval,
	283	unsigned *readval);
	284
23491b51 DC	285	int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr);
	286
	287	int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable);
	288
	289	int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale);
	290
	291	int st_sensors_read_info_raw(struct iio_dev *indio_dev,
	292	struct iio_chan_spec const ch, int val);
	293
	294	int st_sensors_check_device_support(struct iio_dev *indio_dev,
a7ee8839	295	int num_sensors_list, const struct st_sensor_settings *sensor_settings);
23491b51	296
23491b51 DC	297	ssize_t st_sensors_sysfs_sampling_frequency_avail(struct device *dev,
	298	struct device_attribute attr, char buf);
	299
	300	ssize_t st_sensors_sysfs_scale_avail(struct device *dev,
	301	struct device_attribute attr, char buf);
	302
	303	#endif /* ST_SENSORS_H */