[mirror_ubuntu-artful-kernel.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_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_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,
		},
		.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,
		},
		.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,
};

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