[deliverable/linux.git] / drivers / iio / pressure / st_pressure_core.c

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

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/trigger.h>
#include <linux/iio/buffer.h>
#include <asm/unaligned.h>

#include <linux/iio/common/st_sensors.h>
#include "st_pressure.h"

#define ST_PRESS_LSB_PER_MBAR			4096UL
#define ST_PRESS_KPASCAL_NANO_SCALE		(100000000UL / \
						 ST_PRESS_LSB_PER_MBAR)
#define ST_PRESS_LSB_PER_CELSIUS		480UL
#define ST_PRESS_CELSIUS_NANO_SCALE		(1000000000UL / \
						 ST_PRESS_LSB_PER_CELSIUS)
#define ST_PRESS_NUMBER_DATA_CHANNELS		1

/* FULLSCALE */
#define ST_PRESS_FS_AVL_1260MB			1260

#define ST_PRESS_1_OUT_XL_ADDR			0x28
#define ST_TEMP_1_OUT_L_ADDR			0x2b

/* CUSTOM VALUES FOR LPS331AP SENSOR */
#define ST_PRESS_LPS331AP_WAI_EXP		0xbb
#define ST_PRESS_LPS331AP_ODR_ADDR		0x20
#define ST_PRESS_LPS331AP_ODR_MASK		0x70
#define ST_PRESS_LPS331AP_ODR_AVL_1HZ_VAL	0x01
#define ST_PRESS_LPS331AP_ODR_AVL_7HZ_VAL	0x05
#define ST_PRESS_LPS331AP_ODR_AVL_13HZ_VAL	0x06
#define ST_PRESS_LPS331AP_ODR_AVL_25HZ_VAL	0x07
#define ST_PRESS_LPS331AP_PW_ADDR		0x20
#define ST_PRESS_LPS331AP_PW_MASK		0x80
#define ST_PRESS_LPS331AP_FS_ADDR		0x23
#define ST_PRESS_LPS331AP_FS_MASK		0x30
#define ST_PRESS_LPS331AP_FS_AVL_1260_VAL	0x00
#define ST_PRESS_LPS331AP_FS_AVL_1260_GAIN	ST_PRESS_KPASCAL_NANO_SCALE
#define ST_PRESS_LPS331AP_FS_AVL_TEMP_GAIN	ST_PRESS_CELSIUS_NANO_SCALE
#define ST_PRESS_LPS331AP_BDU_ADDR		0x20
#define ST_PRESS_LPS331AP_BDU_MASK		0x04
#define ST_PRESS_LPS331AP_DRDY_IRQ_ADDR		0x22
#define ST_PRESS_LPS331AP_DRDY_IRQ_INT1_MASK	0x04
#define ST_PRESS_LPS331AP_DRDY_IRQ_INT2_MASK	0x20
#define ST_PRESS_LPS331AP_IHL_IRQ_ADDR		0x22
#define ST_PRESS_LPS331AP_IHL_IRQ_MASK		0x80
#define ST_PRESS_LPS331AP_MULTIREAD_BIT		true
#define ST_PRESS_LPS331AP_TEMP_OFFSET		42500

/* CUSTOM VALUES FOR LPS001WP SENSOR */
#define ST_PRESS_LPS001WP_WAI_EXP		0xba
#define ST_PRESS_LPS001WP_ODR_ADDR		0x20
#define ST_PRESS_LPS001WP_ODR_MASK		0x30
#define ST_PRESS_LPS001WP_ODR_AVL_1HZ_VAL	0x01
#define ST_PRESS_LPS001WP_ODR_AVL_7HZ_VAL	0x02
#define ST_PRESS_LPS001WP_ODR_AVL_13HZ_VAL	0x03
#define ST_PRESS_LPS001WP_PW_ADDR		0x20
#define ST_PRESS_LPS001WP_PW_MASK		0x40
#define ST_PRESS_LPS001WP_BDU_ADDR		0x20
#define ST_PRESS_LPS001WP_BDU_MASK		0x04
#define ST_PRESS_LPS001WP_MULTIREAD_BIT		true
#define ST_PRESS_LPS001WP_OUT_L_ADDR		0x28
#define ST_TEMP_LPS001WP_OUT_L_ADDR		0x2a

/* CUSTOM VALUES FOR LPS25H SENSOR */
#define ST_PRESS_LPS25H_WAI_EXP			0xbd
#define ST_PRESS_LPS25H_ODR_ADDR		0x20
#define ST_PRESS_LPS25H_ODR_MASK		0x70
#define ST_PRESS_LPS25H_ODR_AVL_1HZ_VAL		0x01
#define ST_PRESS_LPS25H_ODR_AVL_7HZ_VAL		0x02
#define ST_PRESS_LPS25H_ODR_AVL_13HZ_VAL	0x03
#define ST_PRESS_LPS25H_ODR_AVL_25HZ_VAL	0x04
#define ST_PRESS_LPS25H_PW_ADDR			0x20
#define ST_PRESS_LPS25H_PW_MASK			0x80
#define ST_PRESS_LPS25H_FS_ADDR			0x00
#define ST_PRESS_LPS25H_FS_MASK			0x00
#define ST_PRESS_LPS25H_FS_AVL_1260_VAL		0x00
#define ST_PRESS_LPS25H_FS_AVL_1260_GAIN	ST_PRESS_KPASCAL_NANO_SCALE
#define ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN	ST_PRESS_CELSIUS_NANO_SCALE
#define ST_PRESS_LPS25H_BDU_ADDR		0x20
#define ST_PRESS_LPS25H_BDU_MASK		0x04
#define ST_PRESS_LPS25H_DRDY_IRQ_ADDR		0x23
#define ST_PRESS_LPS25H_DRDY_IRQ_INT1_MASK	0x01
#define ST_PRESS_LPS25H_DRDY_IRQ_INT2_MASK	0x10
#define ST_PRESS_LPS25H_IHL_IRQ_ADDR		0x22
#define ST_PRESS_LPS25H_IHL_IRQ_MASK		0x80
#define ST_PRESS_LPS25H_MULTIREAD_BIT		true
#define ST_PRESS_LPS25H_TEMP_OFFSET		42500
#define ST_PRESS_LPS25H_OUT_XL_ADDR		0x28
#define ST_TEMP_LPS25H_OUT_L_ADDR		0x2b

static const struct iio_chan_spec st_press_1_channels[] = {
	{
		.type = IIO_PRESSURE,
		.channel2 = IIO_NO_MOD,
		.address = ST_PRESS_1_OUT_XL_ADDR,
		.scan_index = ST_SENSORS_SCAN_X,
		.scan_type = {
			.sign = 'u',
			.realbits = 24,
			.storagebits = 24,
			.endianness = IIO_LE,
		},
		.info_mask_separate =
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
		.modified = 0,
	},
	{
		.type = IIO_TEMP,
		.channel2 = IIO_NO_MOD,
		.address = ST_TEMP_1_OUT_L_ADDR,
		.scan_index = -1,
		.scan_type = {
			.sign = 'u',
			.realbits = 16,
			.storagebits = 16,
			.endianness = IIO_LE,
		},
		.info_mask_separate =
			BIT(IIO_CHAN_INFO_RAW) |
			BIT(IIO_CHAN_INFO_SCALE) |
			BIT(IIO_CHAN_INFO_OFFSET),
		.modified = 0,
	},
	IIO_CHAN_SOFT_TIMESTAMP(1)
};

static const struct iio_chan_spec st_press_lps001wp_channels[] = {
	{
		.type = IIO_PRESSURE,
		.channel2 = IIO_NO_MOD,
		.address = ST_PRESS_LPS001WP_OUT_L_ADDR,
		.scan_index = ST_SENSORS_SCAN_X,
		.scan_type = {
			.sign = 'u',
			.realbits = 16,
			.storagebits = 16,
			.endianness = IIO_LE,
		},
		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
		.modified = 0,
	},
	{
		.type = IIO_TEMP,
		.channel2 = IIO_NO_MOD,
		.address = ST_TEMP_LPS001WP_OUT_L_ADDR,
		.scan_index = -1,
		.scan_type = {
			.sign = 'u',
			.realbits = 16,
			.storagebits = 16,
			.endianness = IIO_LE,
		},
		.info_mask_separate =
			BIT(IIO_CHAN_INFO_RAW) |
			BIT(IIO_CHAN_INFO_OFFSET),
		.modified = 0,
	},
	IIO_CHAN_SOFT_TIMESTAMP(1)
};

static const struct st_sensor_settings st_press_sensors_settings[] = {
	{
		.wai = ST_PRESS_LPS331AP_WAI_EXP,
		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
		.sensors_supported = {
			[0] = LPS331AP_PRESS_DEV_NAME,
		},
		.ch = (struct iio_chan_spec *)st_press_1_channels,
		.num_ch = ARRAY_SIZE(st_press_1_channels),
		.odr = {
			.addr = ST_PRESS_LPS331AP_ODR_ADDR,
			.mask = ST_PRESS_LPS331AP_ODR_MASK,
			.odr_avl = {
				{ 1, ST_PRESS_LPS331AP_ODR_AVL_1HZ_VAL, },
				{ 7, ST_PRESS_LPS331AP_ODR_AVL_7HZ_VAL, },
				{ 13, ST_PRESS_LPS331AP_ODR_AVL_13HZ_VAL, },
				{ 25, ST_PRESS_LPS331AP_ODR_AVL_25HZ_VAL, },
			},
		},
		.pw = {
			.addr = ST_PRESS_LPS331AP_PW_ADDR,
			.mask = ST_PRESS_LPS331AP_PW_MASK,
			.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
			.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
		},
		.fs = {
			.addr = ST_PRESS_LPS331AP_FS_ADDR,
			.mask = ST_PRESS_LPS331AP_FS_MASK,
			.fs_avl = {
				[0] = {
					.num = ST_PRESS_FS_AVL_1260MB,
					.value = ST_PRESS_LPS331AP_FS_AVL_1260_VAL,
					.gain = ST_PRESS_LPS331AP_FS_AVL_1260_GAIN,
					.gain2 = ST_PRESS_LPS331AP_FS_AVL_TEMP_GAIN,
				},
			},
		},
		.bdu = {
			.addr = ST_PRESS_LPS331AP_BDU_ADDR,
			.mask = ST_PRESS_LPS331AP_BDU_MASK,
		},
		.drdy_irq = {
			.addr = ST_PRESS_LPS331AP_DRDY_IRQ_ADDR,
			.mask_int1 = ST_PRESS_LPS331AP_DRDY_IRQ_INT1_MASK,
			.mask_int2 = ST_PRESS_LPS331AP_DRDY_IRQ_INT2_MASK,
			.addr_ihl = ST_PRESS_LPS331AP_IHL_IRQ_ADDR,
			.mask_ihl = ST_PRESS_LPS331AP_IHL_IRQ_MASK,
		},
		.multi_read_bit = ST_PRESS_LPS331AP_MULTIREAD_BIT,
		.bootime = 2,
	},
	{
		.wai = ST_PRESS_LPS001WP_WAI_EXP,
		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
		.sensors_supported = {
			[0] = LPS001WP_PRESS_DEV_NAME,
		},
		.ch = (struct iio_chan_spec *)st_press_lps001wp_channels,
		.num_ch = ARRAY_SIZE(st_press_lps001wp_channels),
		.odr = {
			.addr = ST_PRESS_LPS001WP_ODR_ADDR,
			.mask = ST_PRESS_LPS001WP_ODR_MASK,
			.odr_avl = {
				{ 1, ST_PRESS_LPS001WP_ODR_AVL_1HZ_VAL, },
				{ 7, ST_PRESS_LPS001WP_ODR_AVL_7HZ_VAL, },
				{ 13, ST_PRESS_LPS001WP_ODR_AVL_13HZ_VAL, },
			},
		},
		.pw = {
			.addr = ST_PRESS_LPS001WP_PW_ADDR,
			.mask = ST_PRESS_LPS001WP_PW_MASK,
			.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
			.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
		},
		.fs = {
			.addr = 0,
		},
		.bdu = {
			.addr = ST_PRESS_LPS001WP_BDU_ADDR,
			.mask = ST_PRESS_LPS001WP_BDU_MASK,
		},
		.drdy_irq = {
			.addr = 0,
		},
		.multi_read_bit = ST_PRESS_LPS001WP_MULTIREAD_BIT,
		.bootime = 2,
	},
	{
		.wai = ST_PRESS_LPS25H_WAI_EXP,
		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
		.sensors_supported = {
			[0] = LPS25H_PRESS_DEV_NAME,
		},
		.ch = (struct iio_chan_spec *)st_press_1_channels,
		.num_ch = ARRAY_SIZE(st_press_1_channels),
		.odr = {
			.addr = ST_PRESS_LPS25H_ODR_ADDR,
			.mask = ST_PRESS_LPS25H_ODR_MASK,
			.odr_avl = {
				{ 1, ST_PRESS_LPS25H_ODR_AVL_1HZ_VAL, },
				{ 7, ST_PRESS_LPS25H_ODR_AVL_7HZ_VAL, },
				{ 13, ST_PRESS_LPS25H_ODR_AVL_13HZ_VAL, },
				{ 25, ST_PRESS_LPS25H_ODR_AVL_25HZ_VAL, },
			},
		},
		.pw = {
			.addr = ST_PRESS_LPS25H_PW_ADDR,
			.mask = ST_PRESS_LPS25H_PW_MASK,
			.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
			.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
		},
		.fs = {
			.addr = ST_PRESS_LPS25H_FS_ADDR,
			.mask = ST_PRESS_LPS25H_FS_MASK,
			.fs_avl = {
				[0] = {
					.num = ST_PRESS_FS_AVL_1260MB,
					.value = ST_PRESS_LPS25H_FS_AVL_1260_VAL,
					.gain = ST_PRESS_LPS25H_FS_AVL_1260_GAIN,
					.gain2 = ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN,
				},
			},
		},
		.bdu = {
			.addr = ST_PRESS_LPS25H_BDU_ADDR,
			.mask = ST_PRESS_LPS25H_BDU_MASK,
		},
		.drdy_irq = {
			.addr = ST_PRESS_LPS25H_DRDY_IRQ_ADDR,
			.mask_int1 = ST_PRESS_LPS25H_DRDY_IRQ_INT1_MASK,
			.mask_int2 = ST_PRESS_LPS25H_DRDY_IRQ_INT2_MASK,
			.addr_ihl = ST_PRESS_LPS25H_IHL_IRQ_ADDR,
			.mask_ihl = ST_PRESS_LPS25H_IHL_IRQ_MASK,
		},
		.multi_read_bit = ST_PRESS_LPS25H_MULTIREAD_BIT,
		.bootime = 2,
	},
};

static int st_press_write_raw(struct iio_dev *indio_dev,
			      struct iio_chan_spec const *ch,
			      int val,
			      int val2,
			      long mask)
{
	int err;

	switch (mask) {
	case IIO_CHAN_INFO_SAMP_FREQ:
		if (val2)
			return -EINVAL;
		mutex_lock(&indio_dev->mlock);
		err = st_sensors_set_odr(indio_dev, val);
		mutex_unlock(&indio_dev->mlock);
		return err;
	default:
		return -EINVAL;
	}
}

static int st_press_read_raw(struct iio_dev *indio_dev,
			struct iio_chan_spec const *ch, int *val,
							int *val2, long mask)
{
	int err;
	struct st_sensor_data *press_data = iio_priv(indio_dev);

	switch (mask) {
	case IIO_CHAN_INFO_RAW:
		err = st_sensors_read_info_raw(indio_dev, ch, val);
		if (err < 0)
			goto read_error;

		return IIO_VAL_INT;
	case IIO_CHAN_INFO_SCALE:
		*val = 0;

		switch (ch->type) {
		case IIO_PRESSURE:
			*val2 = press_data->current_fullscale->gain;
			break;
		case IIO_TEMP:
			*val2 = press_data->current_fullscale->gain2;
			break;
		default:
			err = -EINVAL;
			goto read_error;
		}

		return IIO_VAL_INT_PLUS_NANO;
	case IIO_CHAN_INFO_OFFSET:
		switch (ch->type) {
		case IIO_TEMP:
			*val = 425;
			*val2 = 10;
			break;
		default:
			err = -EINVAL;
			goto read_error;
		}

		return IIO_VAL_FRACTIONAL;
	case IIO_CHAN_INFO_SAMP_FREQ:
		*val = press_data->odr;
		return IIO_VAL_INT;
	default:
		return -EINVAL;
	}

read_error:
	return err;
}

static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();

static struct attribute *st_press_attributes[] = {
	&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
	NULL,
};

static const struct attribute_group st_press_attribute_group = {
	.attrs = st_press_attributes,
};

static const struct iio_info press_info = {
	.driver_module = THIS_MODULE,
	.attrs = &st_press_attribute_group,
	.read_raw = &st_press_read_raw,
	.write_raw = &st_press_write_raw,
	.debugfs_reg_access = &st_sensors_debugfs_reg_access,
};

#ifdef CONFIG_IIO_TRIGGER
static const struct iio_trigger_ops st_press_trigger_ops = {
	.owner = THIS_MODULE,
	.set_trigger_state = ST_PRESS_TRIGGER_SET_STATE,
};
#define ST_PRESS_TRIGGER_OPS (&st_press_trigger_ops)
#else
#define ST_PRESS_TRIGGER_OPS NULL
#endif

int st_press_common_probe(struct iio_dev *indio_dev)
{
	struct st_sensor_data *press_data = iio_priv(indio_dev);
	int irq = press_data->get_irq_data_ready(indio_dev);
	int err;

	indio_dev->modes = INDIO_DIRECT_MODE;
	indio_dev->info = &press_info;
	mutex_init(&press_data->tb.buf_lock);

	st_sensors_power_enable(indio_dev);

	err = st_sensors_check_device_support(indio_dev,
					ARRAY_SIZE(st_press_sensors_settings),
					st_press_sensors_settings);
	if (err < 0)
		return err;

	press_data->num_data_channels = ST_PRESS_NUMBER_DATA_CHANNELS;
	press_data->multiread_bit = press_data->sensor_settings->multi_read_bit;
	indio_dev->channels = press_data->sensor_settings->ch;
	indio_dev->num_channels = press_data->sensor_settings->num_ch;

	if (press_data->sensor_settings->fs.addr != 0)
		press_data->current_fullscale =
			(struct st_sensor_fullscale_avl *)
				&press_data->sensor_settings->fs.fs_avl[0];

	press_data->odr = press_data->sensor_settings->odr.odr_avl[0].hz;

	/* Some devices don't support a data ready pin. */
	if (!press_data->dev->platform_data &&
				press_data->sensor_settings->drdy_irq.addr)
		press_data->dev->platform_data =
			(struct st_sensors_platform_data *)&default_press_pdata;

	err = st_sensors_init_sensor(indio_dev, press_data->dev->platform_data);
	if (err < 0)
		return err;

	err = st_press_allocate_ring(indio_dev);
	if (err < 0)
		return err;

	if (irq > 0) {
		err = st_sensors_allocate_trigger(indio_dev,
						  ST_PRESS_TRIGGER_OPS);
		if (err < 0)
			goto st_press_probe_trigger_error;
	}

	err = iio_device_register(indio_dev);
	if (err)
		goto st_press_device_register_error;

	dev_info(&indio_dev->dev, "registered pressure sensor %s\n",
		 indio_dev->name);

	return err;

st_press_device_register_error:
	if (irq > 0)
		st_sensors_deallocate_trigger(indio_dev);
st_press_probe_trigger_error:
	st_press_deallocate_ring(indio_dev);

	return err;
}
EXPORT_SYMBOL(st_press_common_probe);

void st_press_common_remove(struct iio_dev *indio_dev)
{
	struct st_sensor_data *press_data = iio_priv(indio_dev);

	st_sensors_power_disable(indio_dev);

	iio_device_unregister(indio_dev);
	if (press_data->get_irq_data_ready(indio_dev) > 0)
		st_sensors_deallocate_trigger(indio_dev);

	st_press_deallocate_ring(indio_dev);
}
EXPORT_SYMBOL(st_press_common_remove);

MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
MODULE_DESCRIPTION("STMicroelectronics pressures driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
217494e5 DC	1	/*
	2	* STMicroelectronics pressures driver
	3	*
	4	* Copyright 2013 STMicroelectronics Inc.
	5	*
	6	* Denis Ciocca <denis.ciocca@st.com>
	7	*
	8	* Licensed under the GPL-2.
	9	*/
	10
	11	#include <linux/kernel.h>
	12	#include <linux/module.h>
	13	#include <linux/slab.h>
	14	#include <linux/errno.h>
	15	#include <linux/types.h>
	16	#include <linux/mutex.h>
	17	#include <linux/interrupt.h>
	18	#include <linux/i2c.h>
	19	#include <linux/gpio.h>
	20	#include <linux/irq.h>
	21	#include <linux/delay.h>
	22	#include <linux/iio/iio.h>
	23	#include <linux/iio/sysfs.h>
	24	#include <linux/iio/trigger.h>
	25	#include <linux/iio/buffer.h>
	26	#include <asm/unaligned.h>
	27
	28	#include <linux/iio/common/st_sensors.h>
	29	#include "st_pressure.h"
	30
67dbf54a JA	31	#define ST_PRESS_LSB_PER_MBAR 4096UL
	32	#define ST_PRESS_KPASCAL_NANO_SCALE (100000000UL / \
	33	ST_PRESS_LSB_PER_MBAR)
1003eb67 JA	34	#define ST_PRESS_LSB_PER_CELSIUS 480UL
	35	#define ST_PRESS_CELSIUS_NANO_SCALE (1000000000UL / \
	36	ST_PRESS_LSB_PER_CELSIUS)
217494e5 DC	37	#define ST_PRESS_NUMBER_DATA_CHANNELS 1
217494e5 DC	38
217494e5 DC	39	/* FULLSCALE */
	40	#define ST_PRESS_FS_AVL_1260MB 1260
	41
93187840 DC	42	#define ST_PRESS_1_OUT_XL_ADDR 0x28
	43	#define ST_TEMP_1_OUT_L_ADDR 0x2b
	44
302fbd50 LJ	45	/* CUSTOM VALUES FOR LPS331AP SENSOR */
	46	#define ST_PRESS_LPS331AP_WAI_EXP 0xbb
	47	#define ST_PRESS_LPS331AP_ODR_ADDR 0x20
	48	#define ST_PRESS_LPS331AP_ODR_MASK 0x70
	49	#define ST_PRESS_LPS331AP_ODR_AVL_1HZ_VAL 0x01
	50	#define ST_PRESS_LPS331AP_ODR_AVL_7HZ_VAL 0x05
	51	#define ST_PRESS_LPS331AP_ODR_AVL_13HZ_VAL 0x06
	52	#define ST_PRESS_LPS331AP_ODR_AVL_25HZ_VAL 0x07
	53	#define ST_PRESS_LPS331AP_PW_ADDR 0x20
	54	#define ST_PRESS_LPS331AP_PW_MASK 0x80
	55	#define ST_PRESS_LPS331AP_FS_ADDR 0x23
	56	#define ST_PRESS_LPS331AP_FS_MASK 0x30
	57	#define ST_PRESS_LPS331AP_FS_AVL_1260_VAL 0x00
	58	#define ST_PRESS_LPS331AP_FS_AVL_1260_GAIN ST_PRESS_KPASCAL_NANO_SCALE
	59	#define ST_PRESS_LPS331AP_FS_AVL_TEMP_GAIN ST_PRESS_CELSIUS_NANO_SCALE
	60	#define ST_PRESS_LPS331AP_BDU_ADDR 0x20
	61	#define ST_PRESS_LPS331AP_BDU_MASK 0x04
	62	#define ST_PRESS_LPS331AP_DRDY_IRQ_ADDR 0x22
	63	#define ST_PRESS_LPS331AP_DRDY_IRQ_INT1_MASK 0x04
	64	#define ST_PRESS_LPS331AP_DRDY_IRQ_INT2_MASK 0x20
a9fd053b LW	65	#define ST_PRESS_LPS331AP_IHL_IRQ_ADDR 0x22
a9fd053b LW	66	#define ST_PRESS_LPS331AP_IHL_IRQ_MASK 0x80
302fbd50 LJ	67	#define ST_PRESS_LPS331AP_MULTIREAD_BIT true
302fbd50 LJ	68	#define ST_PRESS_LPS331AP_TEMP_OFFSET 42500
217494e5	69
7885a8ce LJ	70	/* CUSTOM VALUES FOR LPS001WP SENSOR */
	71	#define ST_PRESS_LPS001WP_WAI_EXP 0xba
	72	#define ST_PRESS_LPS001WP_ODR_ADDR 0x20
	73	#define ST_PRESS_LPS001WP_ODR_MASK 0x30
	74	#define ST_PRESS_LPS001WP_ODR_AVL_1HZ_VAL 0x01
	75	#define ST_PRESS_LPS001WP_ODR_AVL_7HZ_VAL 0x02
	76	#define ST_PRESS_LPS001WP_ODR_AVL_13HZ_VAL 0x03
	77	#define ST_PRESS_LPS001WP_PW_ADDR 0x20
	78	#define ST_PRESS_LPS001WP_PW_MASK 0x40
	79	#define ST_PRESS_LPS001WP_BDU_ADDR 0x20
	80	#define ST_PRESS_LPS001WP_BDU_MASK 0x04
	81	#define ST_PRESS_LPS001WP_MULTIREAD_BIT true
	82	#define ST_PRESS_LPS001WP_OUT_L_ADDR 0x28
	83	#define ST_TEMP_LPS001WP_OUT_L_ADDR 0x2a
	84
93187840 DC	85	/* CUSTOM VALUES FOR LPS25H SENSOR */
	86	#define ST_PRESS_LPS25H_WAI_EXP 0xbd
	87	#define ST_PRESS_LPS25H_ODR_ADDR 0x20
	88	#define ST_PRESS_LPS25H_ODR_MASK 0x70
	89	#define ST_PRESS_LPS25H_ODR_AVL_1HZ_VAL 0x01
	90	#define ST_PRESS_LPS25H_ODR_AVL_7HZ_VAL 0x02
	91	#define ST_PRESS_LPS25H_ODR_AVL_13HZ_VAL 0x03
	92	#define ST_PRESS_LPS25H_ODR_AVL_25HZ_VAL 0x04
	93	#define ST_PRESS_LPS25H_PW_ADDR 0x20
	94	#define ST_PRESS_LPS25H_PW_MASK 0x80
	95	#define ST_PRESS_LPS25H_FS_ADDR 0x00
	96	#define ST_PRESS_LPS25H_FS_MASK 0x00
	97	#define ST_PRESS_LPS25H_FS_AVL_1260_VAL 0x00
	98	#define ST_PRESS_LPS25H_FS_AVL_1260_GAIN ST_PRESS_KPASCAL_NANO_SCALE
	99	#define ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN ST_PRESS_CELSIUS_NANO_SCALE
	100	#define ST_PRESS_LPS25H_BDU_ADDR 0x20
	101	#define ST_PRESS_LPS25H_BDU_MASK 0x04
	102	#define ST_PRESS_LPS25H_DRDY_IRQ_ADDR 0x23
	103	#define ST_PRESS_LPS25H_DRDY_IRQ_INT1_MASK 0x01
	104	#define ST_PRESS_LPS25H_DRDY_IRQ_INT2_MASK 0x10
a9fd053b LW	105	#define ST_PRESS_LPS25H_IHL_IRQ_ADDR 0x22
a9fd053b LW	106	#define ST_PRESS_LPS25H_IHL_IRQ_MASK 0x80
93187840 DC	107	#define ST_PRESS_LPS25H_MULTIREAD_BIT true
	108	#define ST_PRESS_LPS25H_TEMP_OFFSET 42500
	109	#define ST_PRESS_LPS25H_OUT_XL_ADDR 0x28
	110	#define ST_TEMP_LPS25H_OUT_L_ADDR 0x2b
	111
	112	static const struct iio_chan_spec st_press_1_channels[] = {
2f5effcb LJ	113	{
	114	.type = IIO_PRESSURE,
	115	.channel2 = IIO_NO_MOD,
93187840	116	.address = ST_PRESS_1_OUT_XL_ADDR,
2f5effcb LJ	117	.scan_index = ST_SENSORS_SCAN_X,
	118	.scan_type = {
	119	.sign = 'u',
	120	.realbits = 24,
	121	.storagebits = 24,
	122	.endianness = IIO_LE,
	123	},
	124	.info_mask_separate =
217494e5	125	BIT(IIO_CHAN_INFO_RAW) \| BIT(IIO_CHAN_INFO_SCALE),
2f5effcb LJ	126	.modified = 0,
	127	},
	128	{
	129	.type = IIO_TEMP,
	130	.channel2 = IIO_NO_MOD,
93187840	131	.address = ST_TEMP_1_OUT_L_ADDR,
2f5effcb LJ	132	.scan_index = -1,
	133	.scan_type = {
	134	.sign = 'u',
	135	.realbits = 16,
	136	.storagebits = 16,
	137	.endianness = IIO_LE,
	138	},
	139	.info_mask_separate =
	140	BIT(IIO_CHAN_INFO_RAW) \|
	141	BIT(IIO_CHAN_INFO_SCALE) \|
	142	BIT(IIO_CHAN_INFO_OFFSET),
	143	.modified = 0,
	144	},
217494e5 DC	145	IIO_CHAN_SOFT_TIMESTAMP(1)
	146	};
	147
7885a8ce LJ	148	static const struct iio_chan_spec st_press_lps001wp_channels[] = {
	149	{
	150	.type = IIO_PRESSURE,
	151	.channel2 = IIO_NO_MOD,
	152	.address = ST_PRESS_LPS001WP_OUT_L_ADDR,
	153	.scan_index = ST_SENSORS_SCAN_X,
	154	.scan_type = {
	155	.sign = 'u',
	156	.realbits = 16,
	157	.storagebits = 16,
	158	.endianness = IIO_LE,
	159	},
	160	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
	161	.modified = 0,
	162	},
	163	{
	164	.type = IIO_TEMP,
	165	.channel2 = IIO_NO_MOD,
	166	.address = ST_TEMP_LPS001WP_OUT_L_ADDR,
	167	.scan_index = -1,
	168	.scan_type = {
	169	.sign = 'u',
	170	.realbits = 16,
	171	.storagebits = 16,
	172	.endianness = IIO_LE,
	173	},
	174	.info_mask_separate =
	175	BIT(IIO_CHAN_INFO_RAW) \|
	176	BIT(IIO_CHAN_INFO_OFFSET),
	177	.modified = 0,
	178	},
	179	IIO_CHAN_SOFT_TIMESTAMP(1)
	180	};
	181
a7ee8839	182	static const struct st_sensor_settings st_press_sensors_settings[] = {
217494e5	183	{
302fbd50	184	.wai = ST_PRESS_LPS331AP_WAI_EXP,
bc27381e	185	.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
217494e5 DC	186	.sensors_supported = {
	187	[0] = LPS331AP_PRESS_DEV_NAME,
	188	},
93187840 DC	189	.ch = (struct iio_chan_spec *)st_press_1_channels,
93187840 DC	190	.num_ch = ARRAY_SIZE(st_press_1_channels),
217494e5	191	.odr = {
302fbd50 LJ	192	.addr = ST_PRESS_LPS331AP_ODR_ADDR,
302fbd50 LJ	193	.mask = ST_PRESS_LPS331AP_ODR_MASK,
217494e5	194	.odr_avl = {
302fbd50 LJ	195	{ 1, ST_PRESS_LPS331AP_ODR_AVL_1HZ_VAL, },
	196	{ 7, ST_PRESS_LPS331AP_ODR_AVL_7HZ_VAL, },
	197	{ 13, ST_PRESS_LPS331AP_ODR_AVL_13HZ_VAL, },
	198	{ 25, ST_PRESS_LPS331AP_ODR_AVL_25HZ_VAL, },
217494e5 DC	199	},
	200	},
	201	.pw = {
302fbd50 LJ	202	.addr = ST_PRESS_LPS331AP_PW_ADDR,
302fbd50 LJ	203	.mask = ST_PRESS_LPS331AP_PW_MASK,
217494e5 DC	204	.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
	205	.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
	206	},
	207	.fs = {
302fbd50 LJ	208	.addr = ST_PRESS_LPS331AP_FS_ADDR,
302fbd50 LJ	209	.mask = ST_PRESS_LPS331AP_FS_MASK,
217494e5 DC	210	.fs_avl = {
	211	[0] = {
	212	.num = ST_PRESS_FS_AVL_1260MB,
302fbd50 LJ	213	.value = ST_PRESS_LPS331AP_FS_AVL_1260_VAL,
	214	.gain = ST_PRESS_LPS331AP_FS_AVL_1260_GAIN,
	215	.gain2 = ST_PRESS_LPS331AP_FS_AVL_TEMP_GAIN,
217494e5 DC	216	},
	217	},
	218	},
	219	.bdu = {
302fbd50 LJ	220	.addr = ST_PRESS_LPS331AP_BDU_ADDR,
302fbd50 LJ	221	.mask = ST_PRESS_LPS331AP_BDU_MASK,
217494e5 DC	222	},
217494e5 DC	223	.drdy_irq = {
302fbd50 LJ	224	.addr = ST_PRESS_LPS331AP_DRDY_IRQ_ADDR,
	225	.mask_int1 = ST_PRESS_LPS331AP_DRDY_IRQ_INT1_MASK,
	226	.mask_int2 = ST_PRESS_LPS331AP_DRDY_IRQ_INT2_MASK,
a9fd053b LW	227	.addr_ihl = ST_PRESS_LPS331AP_IHL_IRQ_ADDR,
a9fd053b LW	228	.mask_ihl = ST_PRESS_LPS331AP_IHL_IRQ_MASK,
217494e5	229	},
302fbd50	230	.multi_read_bit = ST_PRESS_LPS331AP_MULTIREAD_BIT,
217494e5 DC	231	.bootime = 2,
217494e5 DC	232	},
7885a8ce LJ	233	{
7885a8ce LJ	234	.wai = ST_PRESS_LPS001WP_WAI_EXP,
bc27381e	235	.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
7885a8ce LJ	236	.sensors_supported = {
	237	[0] = LPS001WP_PRESS_DEV_NAME,
	238	},
	239	.ch = (struct iio_chan_spec *)st_press_lps001wp_channels,
	240	.num_ch = ARRAY_SIZE(st_press_lps001wp_channels),
	241	.odr = {
	242	.addr = ST_PRESS_LPS001WP_ODR_ADDR,
	243	.mask = ST_PRESS_LPS001WP_ODR_MASK,
	244	.odr_avl = {
	245	{ 1, ST_PRESS_LPS001WP_ODR_AVL_1HZ_VAL, },
	246	{ 7, ST_PRESS_LPS001WP_ODR_AVL_7HZ_VAL, },
	247	{ 13, ST_PRESS_LPS001WP_ODR_AVL_13HZ_VAL, },
	248	},
	249	},
	250	.pw = {
	251	.addr = ST_PRESS_LPS001WP_PW_ADDR,
	252	.mask = ST_PRESS_LPS001WP_PW_MASK,
	253	.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
	254	.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
	255	},
	256	.fs = {
	257	.addr = 0,
	258	},
	259	.bdu = {
	260	.addr = ST_PRESS_LPS001WP_BDU_ADDR,
	261	.mask = ST_PRESS_LPS001WP_BDU_MASK,
	262	},
	263	.drdy_irq = {
	264	.addr = 0,
	265	},
	266	.multi_read_bit = ST_PRESS_LPS001WP_MULTIREAD_BIT,
	267	.bootime = 2,
	268	},
93187840 DC	269	{
93187840 DC	270	.wai = ST_PRESS_LPS25H_WAI_EXP,
bc27381e	271	.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
93187840 DC	272	.sensors_supported = {
	273	[0] = LPS25H_PRESS_DEV_NAME,
	274	},
	275	.ch = (struct iio_chan_spec *)st_press_1_channels,
	276	.num_ch = ARRAY_SIZE(st_press_1_channels),
	277	.odr = {
	278	.addr = ST_PRESS_LPS25H_ODR_ADDR,
	279	.mask = ST_PRESS_LPS25H_ODR_MASK,
	280	.odr_avl = {
	281	{ 1, ST_PRESS_LPS25H_ODR_AVL_1HZ_VAL, },
	282	{ 7, ST_PRESS_LPS25H_ODR_AVL_7HZ_VAL, },
	283	{ 13, ST_PRESS_LPS25H_ODR_AVL_13HZ_VAL, },
	284	{ 25, ST_PRESS_LPS25H_ODR_AVL_25HZ_VAL, },
	285	},
	286	},
	287	.pw = {
	288	.addr = ST_PRESS_LPS25H_PW_ADDR,
	289	.mask = ST_PRESS_LPS25H_PW_MASK,
	290	.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
	291	.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
	292	},
	293	.fs = {
	294	.addr = ST_PRESS_LPS25H_FS_ADDR,
	295	.mask = ST_PRESS_LPS25H_FS_MASK,
	296	.fs_avl = {
	297	[0] = {
	298	.num = ST_PRESS_FS_AVL_1260MB,
	299	.value = ST_PRESS_LPS25H_FS_AVL_1260_VAL,
	300	.gain = ST_PRESS_LPS25H_FS_AVL_1260_GAIN,
	301	.gain2 = ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN,
	302	},
	303	},
	304	},
	305	.bdu = {
	306	.addr = ST_PRESS_LPS25H_BDU_ADDR,
	307	.mask = ST_PRESS_LPS25H_BDU_MASK,
	308	},
	309	.drdy_irq = {
	310	.addr = ST_PRESS_LPS25H_DRDY_IRQ_ADDR,
	311	.mask_int1 = ST_PRESS_LPS25H_DRDY_IRQ_INT1_MASK,
	312	.mask_int2 = ST_PRESS_LPS25H_DRDY_IRQ_INT2_MASK,
a9fd053b LW	313	.addr_ihl = ST_PRESS_LPS25H_IHL_IRQ_ADDR,
a9fd053b LW	314	.mask_ihl = ST_PRESS_LPS25H_IHL_IRQ_MASK,
93187840 DC	315	},
	316	.multi_read_bit = ST_PRESS_LPS25H_MULTIREAD_BIT,
	317	.bootime = 2,
	318	},
217494e5 DC	319	};
217494e5 DC	320
2d239c9e JC	321	static int st_press_write_raw(struct iio_dev *indio_dev,
	322	struct iio_chan_spec const *ch,
	323	int val,
	324	int val2,
	325	long mask)
	326	{
	327	int err;
	328
	329	switch (mask) {
	330	case IIO_CHAN_INFO_SAMP_FREQ:
	331	if (val2)
	332	return -EINVAL;
	333	mutex_lock(&indio_dev->mlock);
	334	err = st_sensors_set_odr(indio_dev, val);
	335	mutex_unlock(&indio_dev->mlock);
	336	return err;
	337	default:
	338	return -EINVAL;
	339	}
	340	}
	341
217494e5 DC	342	static int st_press_read_raw(struct iio_dev *indio_dev,
	343	struct iio_chan_spec const ch, int val,
	344	int *val2, long mask)
	345	{
	346	int err;
a1dcf429	347	struct st_sensor_data *press_data = iio_priv(indio_dev);
217494e5 DC	348
	349	switch (mask) {
	350	case IIO_CHAN_INFO_RAW:
	351	err = st_sensors_read_info_raw(indio_dev, ch, val);
	352	if (err < 0)
	353	goto read_error;
	354
	355	return IIO_VAL_INT;
	356	case IIO_CHAN_INFO_SCALE:
	357	*val = 0;
	358
	359	switch (ch->type) {
	360	case IIO_PRESSURE:
a1dcf429	361	*val2 = press_data->current_fullscale->gain;
217494e5 DC	362	break;
217494e5 DC	363	case IIO_TEMP:
a1dcf429	364	*val2 = press_data->current_fullscale->gain2;
217494e5 DC	365	break;
	366	default:
	367	err = -EINVAL;
	368	goto read_error;
	369	}
	370
	371	return IIO_VAL_INT_PLUS_NANO;
	372	case IIO_CHAN_INFO_OFFSET:
	373	switch (ch->type) {
	374	case IIO_TEMP:
	375	*val = 425;
	376	*val2 = 10;
	377	break;
	378	default:
	379	err = -EINVAL;
	380	goto read_error;
	381	}
	382
	383	return IIO_VAL_FRACTIONAL;
2d239c9e	384	case IIO_CHAN_INFO_SAMP_FREQ:
a1dcf429	385	*val = press_data->odr;
2d239c9e	386	return IIO_VAL_INT;
217494e5 DC	387	default:
	388	return -EINVAL;
	389	}
	390
	391	read_error:
	392	return err;
	393	}
	394
217494e5 DC	395	static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
	396
	397	static struct attribute *st_press_attributes[] = {
	398	&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
217494e5 DC	399	NULL,
	400	};
	401
	402	static const struct attribute_group st_press_attribute_group = {
	403	.attrs = st_press_attributes,
	404	};
	405
	406	static const struct iio_info press_info = {
	407	.driver_module = THIS_MODULE,
	408	.attrs = &st_press_attribute_group,
	409	.read_raw = &st_press_read_raw,
2d239c9e	410	.write_raw = &st_press_write_raw,
a0175b9c	411	.debugfs_reg_access = &st_sensors_debugfs_reg_access,
217494e5 DC	412	};
	413
	414	#ifdef CONFIG_IIO_TRIGGER
	415	static const struct iio_trigger_ops st_press_trigger_ops = {
	416	.owner = THIS_MODULE,
	417	.set_trigger_state = ST_PRESS_TRIGGER_SET_STATE,
	418	};
	419	#define ST_PRESS_TRIGGER_OPS (&st_press_trigger_ops)
	420	#else
	421	#define ST_PRESS_TRIGGER_OPS NULL
	422	#endif
	423
0baa3fc1	424	int st_press_common_probe(struct iio_dev *indio_dev)
217494e5	425	{
a1dcf429 DC	426	struct st_sensor_data *press_data = iio_priv(indio_dev);
a1dcf429 DC	427	int irq = press_data->get_irq_data_ready(indio_dev);
a6cc5b25	428	int err;
217494e5 DC	429
	430	indio_dev->modes = INDIO_DIRECT_MODE;
	431	indio_dev->info = &press_info;
8e71c04f	432	mutex_init(&press_data->tb.buf_lock);
217494e5	433
ea7e586b	434	st_sensors_power_enable(indio_dev);
77448761	435
217494e5	436	err = st_sensors_check_device_support(indio_dev,
a7ee8839 DC	437	ARRAY_SIZE(st_press_sensors_settings),
a7ee8839 DC	438	st_press_sensors_settings);
217494e5	439	if (err < 0)
a6cc5b25	440	return err;
217494e5	441
a1dcf429 DC	442	press_data->num_data_channels = ST_PRESS_NUMBER_DATA_CHANNELS;
	443	press_data->multiread_bit = press_data->sensor_settings->multi_read_bit;
	444	indio_dev->channels = press_data->sensor_settings->ch;
	445	indio_dev->num_channels = press_data->sensor_settings->num_ch;
217494e5	446
a1dcf429 DC	447	if (press_data->sensor_settings->fs.addr != 0)
	448	press_data->current_fullscale =
	449	(struct st_sensor_fullscale_avl *)
	450	&press_data->sensor_settings->fs.fs_avl[0];
362f2f86	451
a1dcf429	452	press_data->odr = press_data->sensor_settings->odr.odr_avl[0].hz;
217494e5	453
38d1c6a9	454	/* Some devices don't support a data ready pin. */
a1dcf429 DC	455	if (!press_data->dev->platform_data &&
	456	press_data->sensor_settings->drdy_irq.addr)
	457	press_data->dev->platform_data =
23cde4d6 DC	458	(struct st_sensors_platform_data *)&default_press_pdata;
23cde4d6 DC	459
a1dcf429	460	err = st_sensors_init_sensor(indio_dev, press_data->dev->platform_data);
217494e5	461	if (err < 0)
a6cc5b25	462	return err;
217494e5	463
7a137c9c DC	464	err = st_press_allocate_ring(indio_dev);
	465	if (err < 0)
	466	return err;
217494e5	467
7a137c9c	468	if (irq > 0) {
217494e5	469	err = st_sensors_allocate_trigger(indio_dev,
a6cc5b25	470	ST_PRESS_TRIGGER_OPS);
217494e5 DC	471	if (err < 0)
	472	goto st_press_probe_trigger_error;
	473	}
	474
	475	err = iio_device_register(indio_dev);
	476	if (err)
	477	goto st_press_device_register_error;
	478
4f544ced LW	479	dev_info(&indio_dev->dev, "registered pressure sensor %s\n",
	480	indio_dev->name);
	481
217494e5 DC	482	return err;
	483
	484	st_press_device_register_error:
a6cc5b25	485	if (irq > 0)
217494e5 DC	486	st_sensors_deallocate_trigger(indio_dev);
217494e5 DC	487	st_press_probe_trigger_error:
7a137c9c	488	st_press_deallocate_ring(indio_dev);
a6cc5b25	489
217494e5 DC	490	return err;
	491	}
	492	EXPORT_SYMBOL(st_press_common_probe);
	493
	494	void st_press_common_remove(struct iio_dev *indio_dev)
	495	{
a1dcf429	496	struct st_sensor_data *press_data = iio_priv(indio_dev);
217494e5	497
ea7e586b	498	st_sensors_power_disable(indio_dev);
77448761	499
217494e5	500	iio_device_unregister(indio_dev);
a1dcf429	501	if (press_data->get_irq_data_ready(indio_dev) > 0)
217494e5	502	st_sensors_deallocate_trigger(indio_dev);
7a137c9c DC	503
7a137c9c DC	504	st_press_deallocate_ring(indio_dev);
217494e5 DC	505	}
	506	EXPORT_SYMBOL(st_press_common_remove);
	507
	508	MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
	509	MODULE_DESCRIPTION("STMicroelectronics pressures driver");
	510	MODULE_LICENSE("GPL v2");