[mirror_ubuntu-artful-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_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_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_od: address to enable/disable Open Drain on the INT lines.
 * @mask_od: mask to enable/disable Open Drain 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_od;
	u8 mask_od;
	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.
 * @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 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);

#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
a7b8829d LB	108	struct st_sensor_sim {
	109	u8 addr;
	110	u8 value;
	111	};
	112
23491b51 DC	113	/**
	114	* struct st_sensor_bdu - ST sensor device block data update
	115	* @addr: address of the register.
	116	* @mask: mask to write the block data update flag.
	117	*/
	118	struct st_sensor_bdu {
	119	u8 addr;
	120	u8 mask;
	121	};
	122
65e4345c LW	123	/**
	124	* struct st_sensor_das - ST sensor device data alignment selection
	125	* @addr: address of the register.
	126	* @mask: mask to write the das flag for left alignment.
	127	*/
	128	struct st_sensor_das {
	129	u8 addr;
	130	u8 mask;
	131	};
	132
23491b51 DC	133	/**
	134	* struct st_sensor_data_ready_irq - ST sensor device data-ready interrupt
	135	* @addr: address of the register.
23cde4d6 DC	136	* @mask_int1: mask to enable/disable IRQ on INT1 pin.
23cde4d6 DC	137	* @mask_int2: mask to enable/disable IRQ on INT2 pin.
a9fd053b LW	138	* @addr_ihl: address to enable/disable active low on the INT lines.
a9fd053b LW	139	* @mask_ihl: mask to enable/disable active low on the INT lines.
0e6f6871 LW	140	* @addr_od: address to enable/disable Open Drain on the INT lines.
0e6f6871 LW	141	* @mask_od: mask to enable/disable Open Drain on the INT lines.
97865fe4	142	* @addr_stat_drdy: address to read status of DRDY (data ready) interrupt
23491b51 DC	143	* struct ig1 - represents the Interrupt Generator 1 of sensors.
	144	* @en_addr: address of the enable ig1 register.
	145	* @en_mask: mask to write the on/off value for enable.
	146	*/
	147	struct st_sensor_data_ready_irq {
	148	u8 addr;
23cde4d6 DC	149	u8 mask_int1;
23cde4d6 DC	150	u8 mask_int2;
a9fd053b LW	151	u8 addr_ihl;
a9fd053b LW	152	u8 mask_ihl;
0e6f6871 LW	153	u8 addr_od;
0e6f6871 LW	154	u8 mask_od;
97865fe4	155	u8 addr_stat_drdy;
23491b51 DC	156	struct {
	157	u8 en_addr;
	158	u8 en_mask;
	159	} ig1;
	160	};
	161
	162	/**
	163	* struct st_sensor_transfer_buffer - ST sensor device I/O buffer
	164	* @buf_lock: Mutex to protect rx and tx buffers.
	165	* @tx_buf: Buffer used by SPI transfer function to send data to the sensors.
	166	* This buffer is used to avoid DMA not-aligned issue.
	167	* @rx_buf: Buffer used by SPI transfer to receive data from sensors.
	168	* This buffer is used to avoid DMA not-aligned issue.
	169	*/
	170	struct st_sensor_transfer_buffer {
	171	struct mutex buf_lock;
	172	u8 rx_buf[ST_SENSORS_RX_MAX_LENGTH];
	173	u8 tx_buf[ST_SENSORS_TX_MAX_LENGTH] ____cacheline_aligned;
	174	};
	175
	176	/**
	177	* struct st_sensor_transfer_function - ST sensor device I/O function
	178	* @read_byte: Function used to read one byte.
	179	* @write_byte: Function used to write one byte.
	180	* @read_multiple_byte: Function used to read multiple byte.
	181	*/
	182	struct st_sensor_transfer_function {
	183	int (read_byte) (struct st_sensor_transfer_buffer tb,
	184	struct device dev, u8 reg_addr, u8 res_byte);
	185	int (write_byte) (struct st_sensor_transfer_buffer tb,
	186	struct device *dev, u8 reg_addr, u8 data);
	187	int (read_multiple_byte) (struct st_sensor_transfer_buffer tb,
	188	struct device dev, u8 reg_addr, int len, u8 data,
	189	bool multiread_bit);
	190	};
	191
	192	/**
a7ee8839	193	* struct st_sensor_settings - ST specific sensor settings
23491b51	194	* @wai: Contents of WhoAmI register.
bc27381e	195	* @wai_addr: The address of WhoAmI register.
23491b51 DC	196	* @sensors_supported: List of supported sensors by struct itself.
	197	* @ch: IIO channels for the sensor.
	198	* @odr: Output data rate register and ODR list available.
	199	* @pw: Power register of the sensor.
	200	* @enable_axis: Enable one or more axis of the sensor.
	201	* @fs: Full scale register and full scale list available.
	202	* @bdu: Block data update register.
65e4345c	203	* @das: Data Alignment Selection register.
23491b51	204	* @drdy_irq: Data ready register of the sensor.
a7b8829d	205	* @sim: SPI serial interface mode register of the sensor.
23491b51 DC	206	* @multi_read_bit: Use or not particular bit for [I2C/SPI] multi-read.
	207	* @bootime: samples to discard when sensor passing from power-down to power-up.
	208	*/
a7ee8839	209	struct st_sensor_settings {
23491b51	210	u8 wai;
bc27381e	211	u8 wai_addr;
23491b51 DC	212	char sensors_supported[ST_SENSORS_MAX_4WAI][ST_SENSORS_MAX_NAME];
23491b51 DC	213	struct iio_chan_spec *ch;
ea01f2c1	214	int num_ch;
23491b51 DC	215	struct st_sensor_odr odr;
	216	struct st_sensor_power pw;
	217	struct st_sensor_axis enable_axis;
	218	struct st_sensor_fullscale fs;
	219	struct st_sensor_bdu bdu;
65e4345c	220	struct st_sensor_das das;
23491b51	221	struct st_sensor_data_ready_irq drdy_irq;
a7b8829d	222	struct st_sensor_sim sim;
23491b51 DC	223	bool multi_read_bit;
	224	unsigned int bootime;
	225	};
	226
	227	/**
	228	* struct st_sensor_data - ST sensor device status
	229	* @dev: Pointer to instance of struct device (I2C or SPI).
	230	* @trig: The trigger in use by the core driver.
a7ee8839	231	* @sensor_settings: Pointer to the specific sensor settings in use.
23491b51	232	* @current_fullscale: Maximum range of measure by the sensor.
77448761	233	* @vdd: Pointer to sensor's Vdd power supply
71e1980c	234	* @vdd_io: Pointer to sensor's Vdd-IO power supply
23491b51 DC	235	* @enabled: Status of the sensor (false->off, true->on).
	236	* @multiread_bit: Use or not particular bit for [I2C/SPI] multiread.
	237	* @buffer_data: Data used by buffer part.
	238	* @odr: Output data rate of the sensor [Hz].
607a568a	239	* num_data_channels: Number of data channels used in buffer.
23cde4d6	240	* @drdy_int_pin: Redirect DRDY on pin 1 (1) or pin 2 (2).
0e6f6871	241	* @int_pin_open_drain: Set the interrupt/DRDY to open drain.
23491b51 DC	242	* @get_irq_data_ready: Function to get the IRQ used for data ready signal.
	243	* @tf: Transfer function structure used by I/O operations.
	244	* @tb: Transfer buffers and mutex used by I/O operations.
90efe055	245	* @edge_irq: the IRQ triggers on edges and need special handling.
65925b65 LW	246	* @hw_irq_trigger: if we're using the hardware interrupt on the sensor.
65925b65 LW	247	* @hw_timestamp: Latest timestamp from the interrupt handler, when in use.
23491b51 DC	248	*/
	249	struct st_sensor_data {
	250	struct device *dev;
	251	struct iio_trigger *trig;
a7ee8839	252	struct st_sensor_settings *sensor_settings;
23491b51	253	struct st_sensor_fullscale_avl *current_fullscale;
77448761	254	struct regulator *vdd;
71e1980c	255	struct regulator *vdd_io;
23491b51 DC	256
	257	bool enabled;
	258	bool multiread_bit;
	259
	260	char *buffer_data;
	261
	262	unsigned int odr;
607a568a	263	unsigned int num_data_channels;
23491b51	264
23cde4d6	265	u8 drdy_int_pin;
0e6f6871	266	bool int_pin_open_drain;
23cde4d6	267
23491b51 DC	268	unsigned int (get_irq_data_ready) (struct iio_dev indio_dev);
	269
	270	const struct st_sensor_transfer_function *tf;
	271	struct st_sensor_transfer_buffer tb;
65925b65	272
90efe055	273	bool edge_irq;
65925b65 LW	274	bool hw_irq_trigger;
65925b65 LW	275	s64 hw_timestamp;
23491b51 DC	276	};
	277
	278	#ifdef CONFIG_IIO_BUFFER
5a4d7291	279	irqreturn_t st_sensors_trigger_handler(int irq, void *p);
5a4d7291 GR	280	#endif
	281
	282	#ifdef CONFIG_IIO_TRIGGER
23491b51 DC	283	int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
	284	const struct iio_trigger_ops *trigger_ops);
	285
	286	void st_sensors_deallocate_trigger(struct iio_dev *indio_dev);
65925b65 LW	287	int st_sensors_validate_device(struct iio_trigger *trig,
65925b65 LW	288	struct iio_dev *indio_dev);
91ffbabf DC	289	#else
	290	static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
	291	const struct iio_trigger_ops *trigger_ops)
	292	{
	293	return 0;
	294	}
	295	static inline void st_sensors_deallocate_trigger(struct iio_dev *indio_dev)
	296	{
	297	return;
	298	}
65925b65	299	#define st_sensors_validate_device NULL
23491b51 DC	300	#endif
23491b51 DC	301
23cde4d6 DC	302	int st_sensors_init_sensor(struct iio_dev *indio_dev,
23cde4d6 DC	303	struct st_sensors_platform_data *pdata);
23491b51 DC	304
	305	int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable);
	306
	307	int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable);
	308
14f295c8	309	int st_sensors_power_enable(struct iio_dev *indio_dev);
ea7e586b LW	310
	311	void st_sensors_power_disable(struct iio_dev *indio_dev);
	312
a0175b9c LW	313	int st_sensors_debugfs_reg_access(struct iio_dev *indio_dev,
	314	unsigned reg, unsigned writeval,
	315	unsigned *readval);
	316
23491b51 DC	317	int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr);
	318
	319	int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable);
	320
	321	int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale);
	322
	323	int st_sensors_read_info_raw(struct iio_dev *indio_dev,
	324	struct iio_chan_spec const ch, int val);
	325
	326	int st_sensors_check_device_support(struct iio_dev *indio_dev,
a7ee8839	327	int num_sensors_list, const struct st_sensor_settings *sensor_settings);
23491b51	328
23491b51 DC	329	ssize_t st_sensors_sysfs_sampling_frequency_avail(struct device *dev,
	330	struct device_attribute attr, char buf);
	331
	332	ssize_t st_sensors_sysfs_scale_avail(struct device *dev,
	333	struct device_attribute attr, char buf);
	334
	335	#endif /* ST_SENSORS_H */