[mirror_ubuntu-eoan-kernel.git] / drivers / iio / gyro / st_gyro_core.c

/*
 * STMicroelectronics gyroscopes driver
 *
 * Copyright 2012-2013 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 <linux/iio/common/st_sensors.h>
#include "st_gyro.h"

#define ST_GYRO_NUMBER_DATA_CHANNELS		3

/* DEFAULT VALUE FOR SENSORS */
#define ST_GYRO_DEFAULT_OUT_X_L_ADDR		0x28
#define ST_GYRO_DEFAULT_OUT_Y_L_ADDR		0x2a
#define ST_GYRO_DEFAULT_OUT_Z_L_ADDR		0x2c

/* FULLSCALE */
#define ST_GYRO_FS_AVL_250DPS			250
#define ST_GYRO_FS_AVL_500DPS			500
#define ST_GYRO_FS_AVL_2000DPS			2000

/* CUSTOM VALUES FOR SENSOR 1 */
#define ST_GYRO_1_WAI_EXP			0xd3
#define ST_GYRO_1_ODR_ADDR			0x20
#define ST_GYRO_1_ODR_MASK			0xc0
#define ST_GYRO_1_ODR_AVL_100HZ_VAL		0x00
#define ST_GYRO_1_ODR_AVL_200HZ_VAL		0x01
#define ST_GYRO_1_ODR_AVL_400HZ_VAL		0x02
#define ST_GYRO_1_ODR_AVL_800HZ_VAL		0x03
#define ST_GYRO_1_PW_ADDR			0x20
#define ST_GYRO_1_PW_MASK			0x08
#define ST_GYRO_1_FS_ADDR			0x23
#define ST_GYRO_1_FS_MASK			0x30
#define ST_GYRO_1_FS_AVL_250_VAL		0x00
#define ST_GYRO_1_FS_AVL_500_VAL		0x01
#define ST_GYRO_1_FS_AVL_2000_VAL		0x02
#define ST_GYRO_1_FS_AVL_250_GAIN		IIO_DEGREE_TO_RAD(8750)
#define ST_GYRO_1_FS_AVL_500_GAIN		IIO_DEGREE_TO_RAD(17500)
#define ST_GYRO_1_FS_AVL_2000_GAIN		IIO_DEGREE_TO_RAD(70000)
#define ST_GYRO_1_BDU_ADDR			0x23
#define ST_GYRO_1_BDU_MASK			0x80
#define ST_GYRO_1_DRDY_IRQ_ADDR			0x22
#define ST_GYRO_1_DRDY_IRQ_INT2_MASK		0x08
#define ST_GYRO_1_MULTIREAD_BIT			true

/* CUSTOM VALUES FOR SENSOR 2 */
#define ST_GYRO_2_WAI_EXP			0xd4
#define ST_GYRO_2_ODR_ADDR			0x20
#define ST_GYRO_2_ODR_MASK			0xc0
#define ST_GYRO_2_ODR_AVL_95HZ_VAL		0x00
#define ST_GYRO_2_ODR_AVL_190HZ_VAL		0x01
#define ST_GYRO_2_ODR_AVL_380HZ_VAL		0x02
#define ST_GYRO_2_ODR_AVL_760HZ_VAL		0x03
#define ST_GYRO_2_PW_ADDR			0x20
#define ST_GYRO_2_PW_MASK			0x08
#define ST_GYRO_2_FS_ADDR			0x23
#define ST_GYRO_2_FS_MASK			0x30
#define ST_GYRO_2_FS_AVL_250_VAL		0x00
#define ST_GYRO_2_FS_AVL_500_VAL		0x01
#define ST_GYRO_2_FS_AVL_2000_VAL		0x02
#define ST_GYRO_2_FS_AVL_250_GAIN		IIO_DEGREE_TO_RAD(8750)
#define ST_GYRO_2_FS_AVL_500_GAIN		IIO_DEGREE_TO_RAD(17500)
#define ST_GYRO_2_FS_AVL_2000_GAIN		IIO_DEGREE_TO_RAD(70000)
#define ST_GYRO_2_BDU_ADDR			0x23
#define ST_GYRO_2_BDU_MASK			0x80
#define ST_GYRO_2_DRDY_IRQ_ADDR			0x22
#define ST_GYRO_2_DRDY_IRQ_INT2_MASK		0x08
#define ST_GYRO_2_MULTIREAD_BIT			true

static const struct iio_chan_spec st_gyro_16bit_channels[] = {
	ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
			ST_GYRO_DEFAULT_OUT_X_L_ADDR),
	ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
			ST_GYRO_DEFAULT_OUT_Y_L_ADDR),
	ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
			ST_GYRO_DEFAULT_OUT_Z_L_ADDR),
	IIO_CHAN_SOFT_TIMESTAMP(3)
};

static const struct st_sensors st_gyro_sensors[] = {
	{
		.wai = ST_GYRO_1_WAI_EXP,
		.sensors_supported = {
			[0] = L3G4200D_GYRO_DEV_NAME,
			[1] = LSM330DL_GYRO_DEV_NAME,
		},
		.ch = (struct iio_chan_spec *)st_gyro_16bit_channels,
		.odr = {
			.addr = ST_GYRO_1_ODR_ADDR,
			.mask = ST_GYRO_1_ODR_MASK,
			.odr_avl = {
				{ 100, ST_GYRO_1_ODR_AVL_100HZ_VAL, },
				{ 200, ST_GYRO_1_ODR_AVL_200HZ_VAL, },
				{ 400, ST_GYRO_1_ODR_AVL_400HZ_VAL, },
				{ 800, ST_GYRO_1_ODR_AVL_800HZ_VAL, },
			},
		},
		.pw = {
			.addr = ST_GYRO_1_PW_ADDR,
			.mask = ST_GYRO_1_PW_MASK,
			.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
			.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
		},
		.enable_axis = {
			.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
			.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
		},
		.fs = {
			.addr = ST_GYRO_1_FS_ADDR,
			.mask = ST_GYRO_1_FS_MASK,
			.fs_avl = {
				[0] = {
					.num = ST_GYRO_FS_AVL_250DPS,
					.value = ST_GYRO_1_FS_AVL_250_VAL,
					.gain = ST_GYRO_1_FS_AVL_250_GAIN,
				},
				[1] = {
					.num = ST_GYRO_FS_AVL_500DPS,
					.value = ST_GYRO_1_FS_AVL_500_VAL,
					.gain = ST_GYRO_1_FS_AVL_500_GAIN,
				},
				[2] = {
					.num = ST_GYRO_FS_AVL_2000DPS,
					.value = ST_GYRO_1_FS_AVL_2000_VAL,
					.gain = ST_GYRO_1_FS_AVL_2000_GAIN,
				},
			},
		},
		.bdu = {
			.addr = ST_GYRO_1_BDU_ADDR,
			.mask = ST_GYRO_1_BDU_MASK,
		},
		.drdy_irq = {
			.addr = ST_GYRO_1_DRDY_IRQ_ADDR,
			.mask_int2 = ST_GYRO_1_DRDY_IRQ_INT2_MASK,
		},
		.multi_read_bit = ST_GYRO_1_MULTIREAD_BIT,
		.bootime = 2,
	},
	{
		.wai = ST_GYRO_2_WAI_EXP,
		.sensors_supported = {
			[0] = L3GD20_GYRO_DEV_NAME,
			[1] = LSM330D_GYRO_DEV_NAME,
			[2] = LSM330DLC_GYRO_DEV_NAME,
			[3] = L3G4IS_GYRO_DEV_NAME,
			[4] = LSM330_GYRO_DEV_NAME,
		},
		.ch = (struct iio_chan_spec *)st_gyro_16bit_channels,
		.odr = {
			.addr = ST_GYRO_2_ODR_ADDR,
			.mask = ST_GYRO_2_ODR_MASK,
			.odr_avl = {
				{ 95, ST_GYRO_2_ODR_AVL_95HZ_VAL, },
				{ 190, ST_GYRO_2_ODR_AVL_190HZ_VAL, },
				{ 380, ST_GYRO_2_ODR_AVL_380HZ_VAL, },
				{ 760, ST_GYRO_2_ODR_AVL_760HZ_VAL, },
			},
		},
		.pw = {
			.addr = ST_GYRO_2_PW_ADDR,
			.mask = ST_GYRO_2_PW_MASK,
			.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
			.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
		},
		.enable_axis = {
			.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
			.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
		},
		.fs = {
			.addr = ST_GYRO_2_FS_ADDR,
			.mask = ST_GYRO_2_FS_MASK,
			.fs_avl = {
				[0] = {
					.num = ST_GYRO_FS_AVL_250DPS,
					.value = ST_GYRO_2_FS_AVL_250_VAL,
					.gain = ST_GYRO_2_FS_AVL_250_GAIN,
				},
				[1] = {
					.num = ST_GYRO_FS_AVL_500DPS,
					.value = ST_GYRO_2_FS_AVL_500_VAL,
					.gain = ST_GYRO_2_FS_AVL_500_GAIN,
				},
				[2] = {
					.num = ST_GYRO_FS_AVL_2000DPS,
					.value = ST_GYRO_2_FS_AVL_2000_VAL,
					.gain = ST_GYRO_2_FS_AVL_2000_GAIN,
				},
			},
		},
		.bdu = {
			.addr = ST_GYRO_2_BDU_ADDR,
			.mask = ST_GYRO_2_BDU_MASK,
		},
		.drdy_irq = {
			.addr = ST_GYRO_2_DRDY_IRQ_ADDR,
			.mask_int2 = ST_GYRO_2_DRDY_IRQ_INT2_MASK,
		},
		.multi_read_bit = ST_GYRO_2_MULTIREAD_BIT,
		.bootime = 2,
	},
};

static int st_gyro_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 *gdata = 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;
		*val2 = gdata->current_fullscale->gain;
		return IIO_VAL_INT_PLUS_MICRO;
	default:
		return -EINVAL;
	}

read_error:
	return err;
}

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

	switch (mask) {
	case IIO_CHAN_INFO_SCALE:
		err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
		break;
	default:
		err = -EINVAL;
	}

	return err;
}

static ST_SENSOR_DEV_ATTR_SAMP_FREQ();
static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_anglvel_scale_available);

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

static const struct attribute_group st_gyro_attribute_group = {
	.attrs = st_gyro_attributes,
};

static const struct iio_info gyro_info = {
	.driver_module = THIS_MODULE,
	.attrs = &st_gyro_attribute_group,
	.read_raw = &st_gyro_read_raw,
	.write_raw = &st_gyro_write_raw,
};

#ifdef CONFIG_IIO_TRIGGER
static const struct iio_trigger_ops st_gyro_trigger_ops = {
	.owner = THIS_MODULE,
	.set_trigger_state = ST_GYRO_TRIGGER_SET_STATE,
};
#define ST_GYRO_TRIGGER_OPS (&st_gyro_trigger_ops)
#else
#define ST_GYRO_TRIGGER_OPS NULL
#endif

int st_gyro_common_probe(struct iio_dev *indio_dev,
					struct st_sensors_platform_data *pdata)
{
	struct st_sensor_data *gdata = iio_priv(indio_dev);
	int irq = gdata->get_irq_data_ready(indio_dev);
	int err;

	indio_dev->modes = INDIO_DIRECT_MODE;
	indio_dev->info = &gyro_info;

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

	gdata->num_data_channels = ST_GYRO_NUMBER_DATA_CHANNELS;
	gdata->multiread_bit = gdata->sensor->multi_read_bit;
	indio_dev->channels = gdata->sensor->ch;
	indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;

	gdata->current_fullscale = (struct st_sensor_fullscale_avl *)
						&gdata->sensor->fs.fs_avl[0];
	gdata->odr = gdata->sensor->odr.odr_avl[0].hz;

	err = st_sensors_init_sensor(indio_dev, pdata);
	if (err < 0)
		return err;

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

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

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

	return 0;

st_gyro_device_register_error:
	if (irq > 0)
		st_sensors_deallocate_trigger(indio_dev);
st_gyro_probe_trigger_error:
	st_gyro_deallocate_ring(indio_dev);

	return err;
}
EXPORT_SYMBOL(st_gyro_common_probe);

void st_gyro_common_remove(struct iio_dev *indio_dev)
{
	struct st_sensor_data *gdata = iio_priv(indio_dev);

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

	st_gyro_deallocate_ring(indio_dev);
}
EXPORT_SYMBOL(st_gyro_common_remove);

MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
MODULE_DESCRIPTION("STMicroelectronics gyroscopes driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
7be56a8f DC	1	/*
	2	* STMicroelectronics gyroscopes 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	#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>
8ce4a56a	24	#include <linux/iio/trigger.h>
7be56a8f DC	25	#include <linux/iio/buffer.h>
	26
	27	#include <linux/iio/common/st_sensors.h>
	28	#include "st_gyro.h"
	29
607a568a DC	30	#define ST_GYRO_NUMBER_DATA_CHANNELS 3
607a568a DC	31
7be56a8f DC	32	/* DEFAULT VALUE FOR SENSORS */
	33	#define ST_GYRO_DEFAULT_OUT_X_L_ADDR 0x28
	34	#define ST_GYRO_DEFAULT_OUT_Y_L_ADDR 0x2a
	35	#define ST_GYRO_DEFAULT_OUT_Z_L_ADDR 0x2c
	36
	37	/* FULLSCALE */
	38	#define ST_GYRO_FS_AVL_250DPS 250
	39	#define ST_GYRO_FS_AVL_500DPS 500
	40	#define ST_GYRO_FS_AVL_2000DPS 2000
	41
	42	/* CUSTOM VALUES FOR SENSOR 1 */
	43	#define ST_GYRO_1_WAI_EXP 0xd3
	44	#define ST_GYRO_1_ODR_ADDR 0x20
	45	#define ST_GYRO_1_ODR_MASK 0xc0
	46	#define ST_GYRO_1_ODR_AVL_100HZ_VAL 0x00
	47	#define ST_GYRO_1_ODR_AVL_200HZ_VAL 0x01
	48	#define ST_GYRO_1_ODR_AVL_400HZ_VAL 0x02
	49	#define ST_GYRO_1_ODR_AVL_800HZ_VAL 0x03
	50	#define ST_GYRO_1_PW_ADDR 0x20
	51	#define ST_GYRO_1_PW_MASK 0x08
	52	#define ST_GYRO_1_FS_ADDR 0x23
	53	#define ST_GYRO_1_FS_MASK 0x30
	54	#define ST_GYRO_1_FS_AVL_250_VAL 0x00
	55	#define ST_GYRO_1_FS_AVL_500_VAL 0x01
	56	#define ST_GYRO_1_FS_AVL_2000_VAL 0x02
	57	#define ST_GYRO_1_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750)
	58	#define ST_GYRO_1_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500)
	59	#define ST_GYRO_1_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000)
	60	#define ST_GYRO_1_BDU_ADDR 0x23
	61	#define ST_GYRO_1_BDU_MASK 0x80
	62	#define ST_GYRO_1_DRDY_IRQ_ADDR 0x22
23cde4d6	63	#define ST_GYRO_1_DRDY_IRQ_INT2_MASK 0x08
7be56a8f DC	64	#define ST_GYRO_1_MULTIREAD_BIT true
	65
	66	/* CUSTOM VALUES FOR SENSOR 2 */
	67	#define ST_GYRO_2_WAI_EXP 0xd4
	68	#define ST_GYRO_2_ODR_ADDR 0x20
	69	#define ST_GYRO_2_ODR_MASK 0xc0
	70	#define ST_GYRO_2_ODR_AVL_95HZ_VAL 0x00
	71	#define ST_GYRO_2_ODR_AVL_190HZ_VAL 0x01
	72	#define ST_GYRO_2_ODR_AVL_380HZ_VAL 0x02
	73	#define ST_GYRO_2_ODR_AVL_760HZ_VAL 0x03
	74	#define ST_GYRO_2_PW_ADDR 0x20
	75	#define ST_GYRO_2_PW_MASK 0x08
	76	#define ST_GYRO_2_FS_ADDR 0x23
	77	#define ST_GYRO_2_FS_MASK 0x30
	78	#define ST_GYRO_2_FS_AVL_250_VAL 0x00
	79	#define ST_GYRO_2_FS_AVL_500_VAL 0x01
	80	#define ST_GYRO_2_FS_AVL_2000_VAL 0x02
	81	#define ST_GYRO_2_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750)
	82	#define ST_GYRO_2_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500)
	83	#define ST_GYRO_2_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000)
	84	#define ST_GYRO_2_BDU_ADDR 0x23
	85	#define ST_GYRO_2_BDU_MASK 0x80
	86	#define ST_GYRO_2_DRDY_IRQ_ADDR 0x22
23cde4d6	87	#define ST_GYRO_2_DRDY_IRQ_INT2_MASK 0x08
7be56a8f DC	88	#define ST_GYRO_2_MULTIREAD_BIT true
	89
	90	static const struct iio_chan_spec st_gyro_16bit_channels[] = {
762011d6 DC	91	ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
	92	BIT(IIO_CHAN_INFO_RAW) \| BIT(IIO_CHAN_INFO_SCALE),
	93	ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
	94	ST_GYRO_DEFAULT_OUT_X_L_ADDR),
	95	ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
	96	BIT(IIO_CHAN_INFO_RAW) \| BIT(IIO_CHAN_INFO_SCALE),
	97	ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
	98	ST_GYRO_DEFAULT_OUT_Y_L_ADDR),
	99	ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
	100	BIT(IIO_CHAN_INFO_RAW) \| BIT(IIO_CHAN_INFO_SCALE),
	101	ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
	102	ST_GYRO_DEFAULT_OUT_Z_L_ADDR),
7be56a8f DC	103	IIO_CHAN_SOFT_TIMESTAMP(3)
	104	};
	105
	106	static const struct st_sensors st_gyro_sensors[] = {
	107	{
	108	.wai = ST_GYRO_1_WAI_EXP,
	109	.sensors_supported = {
	110	[0] = L3G4200D_GYRO_DEV_NAME,
	111	[1] = LSM330DL_GYRO_DEV_NAME,
	112	},
	113	.ch = (struct iio_chan_spec *)st_gyro_16bit_channels,
	114	.odr = {
	115	.addr = ST_GYRO_1_ODR_ADDR,
	116	.mask = ST_GYRO_1_ODR_MASK,
	117	.odr_avl = {
	118	{ 100, ST_GYRO_1_ODR_AVL_100HZ_VAL, },
	119	{ 200, ST_GYRO_1_ODR_AVL_200HZ_VAL, },
	120	{ 400, ST_GYRO_1_ODR_AVL_400HZ_VAL, },
	121	{ 800, ST_GYRO_1_ODR_AVL_800HZ_VAL, },
	122	},
	123	},
	124	.pw = {
	125	.addr = ST_GYRO_1_PW_ADDR,
	126	.mask = ST_GYRO_1_PW_MASK,
	127	.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
	128	.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
	129	},
	130	.enable_axis = {
	131	.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
	132	.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
	133	},
	134	.fs = {
	135	.addr = ST_GYRO_1_FS_ADDR,
	136	.mask = ST_GYRO_1_FS_MASK,
	137	.fs_avl = {
	138	[0] = {
	139	.num = ST_GYRO_FS_AVL_250DPS,
	140	.value = ST_GYRO_1_FS_AVL_250_VAL,
	141	.gain = ST_GYRO_1_FS_AVL_250_GAIN,
	142	},
	143	[1] = {
	144	.num = ST_GYRO_FS_AVL_500DPS,
	145	.value = ST_GYRO_1_FS_AVL_500_VAL,
	146	.gain = ST_GYRO_1_FS_AVL_500_GAIN,
	147	},
	148	[2] = {
	149	.num = ST_GYRO_FS_AVL_2000DPS,
	150	.value = ST_GYRO_1_FS_AVL_2000_VAL,
	151	.gain = ST_GYRO_1_FS_AVL_2000_GAIN,
	152	},
	153	},
	154	},
	155	.bdu = {
	156	.addr = ST_GYRO_1_BDU_ADDR,
	157	.mask = ST_GYRO_1_BDU_MASK,
	158	},
	159	.drdy_irq = {
	160	.addr = ST_GYRO_1_DRDY_IRQ_ADDR,
23cde4d6	161	.mask_int2 = ST_GYRO_1_DRDY_IRQ_INT2_MASK,
7be56a8f DC	162	},
	163	.multi_read_bit = ST_GYRO_1_MULTIREAD_BIT,
	164	.bootime = 2,
	165	},
	166	{
	167	.wai = ST_GYRO_2_WAI_EXP,
	168	.sensors_supported = {
	169	[0] = L3GD20_GYRO_DEV_NAME,
a0657716 DC	170	[1] = LSM330D_GYRO_DEV_NAME,
	171	[2] = LSM330DLC_GYRO_DEV_NAME,
	172	[3] = L3G4IS_GYRO_DEV_NAME,
	173	[4] = LSM330_GYRO_DEV_NAME,
7be56a8f DC	174	},
	175	.ch = (struct iio_chan_spec *)st_gyro_16bit_channels,
	176	.odr = {
	177	.addr = ST_GYRO_2_ODR_ADDR,
	178	.mask = ST_GYRO_2_ODR_MASK,
	179	.odr_avl = {
	180	{ 95, ST_GYRO_2_ODR_AVL_95HZ_VAL, },
	181	{ 190, ST_GYRO_2_ODR_AVL_190HZ_VAL, },
	182	{ 380, ST_GYRO_2_ODR_AVL_380HZ_VAL, },
	183	{ 760, ST_GYRO_2_ODR_AVL_760HZ_VAL, },
	184	},
	185	},
	186	.pw = {
	187	.addr = ST_GYRO_2_PW_ADDR,
	188	.mask = ST_GYRO_2_PW_MASK,
	189	.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
	190	.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
	191	},
	192	.enable_axis = {
	193	.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
	194	.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
	195	},
	196	.fs = {
	197	.addr = ST_GYRO_2_FS_ADDR,
	198	.mask = ST_GYRO_2_FS_MASK,
	199	.fs_avl = {
	200	[0] = {
	201	.num = ST_GYRO_FS_AVL_250DPS,
	202	.value = ST_GYRO_2_FS_AVL_250_VAL,
	203	.gain = ST_GYRO_2_FS_AVL_250_GAIN,
	204	},
	205	[1] = {
	206	.num = ST_GYRO_FS_AVL_500DPS,
	207	.value = ST_GYRO_2_FS_AVL_500_VAL,
	208	.gain = ST_GYRO_2_FS_AVL_500_GAIN,
	209	},
	210	[2] = {
	211	.num = ST_GYRO_FS_AVL_2000DPS,
	212	.value = ST_GYRO_2_FS_AVL_2000_VAL,
	213	.gain = ST_GYRO_2_FS_AVL_2000_GAIN,
	214	},
	215	},
	216	},
	217	.bdu = {
	218	.addr = ST_GYRO_2_BDU_ADDR,
	219	.mask = ST_GYRO_2_BDU_MASK,
	220	},
	221	.drdy_irq = {
	222	.addr = ST_GYRO_2_DRDY_IRQ_ADDR,
23cde4d6	223	.mask_int2 = ST_GYRO_2_DRDY_IRQ_INT2_MASK,
7be56a8f DC	224	},
	225	.multi_read_bit = ST_GYRO_2_MULTIREAD_BIT,
	226	.bootime = 2,
	227	},
	228	};
	229
	230	static int st_gyro_read_raw(struct iio_dev *indio_dev,
	231	struct iio_chan_spec const ch, int val,
	232	int *val2, long mask)
	233	{
	234	int err;
	235	struct st_sensor_data *gdata = iio_priv(indio_dev);
	236
	237	switch (mask) {
	238	case IIO_CHAN_INFO_RAW:
	239	err = st_sensors_read_info_raw(indio_dev, ch, val);
	240	if (err < 0)
	241	goto read_error;
	242
	243	return IIO_VAL_INT;
	244	case IIO_CHAN_INFO_SCALE:
	245	*val = 0;
	246	*val2 = gdata->current_fullscale->gain;
	247	return IIO_VAL_INT_PLUS_MICRO;
	248	default:
	249	return -EINVAL;
	250	}
	251
	252	read_error:
	253	return err;
	254	}
	255
	256	static int st_gyro_write_raw(struct iio_dev *indio_dev,
	257	struct iio_chan_spec const *chan, int val, int val2, long mask)
	258	{
	259	int err;
	260
	261	switch (mask) {
	262	case IIO_CHAN_INFO_SCALE:
	263	err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
	264	break;
	265	default:
	266	err = -EINVAL;
	267	}
	268
	269	return err;
	270	}
	271
	272	static ST_SENSOR_DEV_ATTR_SAMP_FREQ();
	273	static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
	274	static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_anglvel_scale_available);
	275
	276	static struct attribute *st_gyro_attributes[] = {
	277	&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
	278	&iio_dev_attr_in_anglvel_scale_available.dev_attr.attr,
	279	&iio_dev_attr_sampling_frequency.dev_attr.attr,
	280	NULL,
	281	};
	282
	283	static const struct attribute_group st_gyro_attribute_group = {
	284	.attrs = st_gyro_attributes,
	285	};
	286
	287	static const struct iio_info gyro_info = {
288	.driver_module = THIS_MODULE,
289	.attrs = &st_gyro_attribute_group,
290	.read_raw = &st_gyro_read_raw,
291	.write_raw = &st_gyro_write_raw,
292	};
293
8ce4a56a	294	#ifdef CONFIG_IIO_TRIGGER
7be56a8f DC	295	static const struct iio_trigger_ops st_gyro_trigger_ops = {
	296	.owner = THIS_MODULE,
	297	.set_trigger_state = ST_GYRO_TRIGGER_SET_STATE,
	298	};
8ce4a56a JC	299	#define ST_GYRO_TRIGGER_OPS (&st_gyro_trigger_ops)
	300	#else
	301	#define ST_GYRO_TRIGGER_OPS NULL
	302	#endif
7be56a8f	303
23cde4d6 DC	304	int st_gyro_common_probe(struct iio_dev *indio_dev,
23cde4d6 DC	305	struct st_sensors_platform_data *pdata)
7be56a8f	306	{
7be56a8f	307	struct st_sensor_data *gdata = iio_priv(indio_dev);
f01a140a LJ	308	int irq = gdata->get_irq_data_ready(indio_dev);
f01a140a LJ	309	int err;
7be56a8f DC	310
	311	indio_dev->modes = INDIO_DIRECT_MODE;
	312	indio_dev->info = &gyro_info;
	313
	314	err = st_sensors_check_device_support(indio_dev,
	315	ARRAY_SIZE(st_gyro_sensors), st_gyro_sensors);
	316	if (err < 0)
f01a140a	317	return err;
7be56a8f	318
607a568a	319	gdata->num_data_channels = ST_GYRO_NUMBER_DATA_CHANNELS;
7be56a8f DC	320	gdata->multiread_bit = gdata->sensor->multi_read_bit;
	321	indio_dev->channels = gdata->sensor->ch;
	322	indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
	323
	324	gdata->current_fullscale = (struct st_sensor_fullscale_avl *)
	325	&gdata->sensor->fs.fs_avl[0];
	326	gdata->odr = gdata->sensor->odr.odr_avl[0].hz;
	327
23cde4d6	328	err = st_sensors_init_sensor(indio_dev, pdata);
7be56a8f	329	if (err < 0)
f01a140a	330	return err;
7be56a8f	331
fb4ea1f8 DC	332	err = st_gyro_allocate_ring(indio_dev);
	333	if (err < 0)
	334	return err;
7be56a8f	335
fb4ea1f8	336	if (irq > 0) {
7be56a8f	337	err = st_sensors_allocate_trigger(indio_dev,
8ce4a56a	338	ST_GYRO_TRIGGER_OPS);
7be56a8f DC	339	if (err < 0)
	340	goto st_gyro_probe_trigger_error;
	341	}
	342
	343	err = iio_device_register(indio_dev);
	344	if (err)
	345	goto st_gyro_device_register_error;
	346
f01a140a	347	return 0;
7be56a8f DC	348
7be56a8f DC	349	st_gyro_device_register_error:
f01a140a	350	if (irq > 0)
7be56a8f DC	351	st_sensors_deallocate_trigger(indio_dev);
7be56a8f DC	352	st_gyro_probe_trigger_error:
fb4ea1f8	353	st_gyro_deallocate_ring(indio_dev);
f01a140a	354
7be56a8f DC	355	return err;
	356	}
	357	EXPORT_SYMBOL(st_gyro_common_probe);
	358
	359	void st_gyro_common_remove(struct iio_dev *indio_dev)
	360	{
	361	struct st_sensor_data *gdata = iio_priv(indio_dev);
	362
	363	iio_device_unregister(indio_dev);
fb4ea1f8	364	if (gdata->get_irq_data_ready(indio_dev) > 0)
7be56a8f	365	st_sensors_deallocate_trigger(indio_dev);
fb4ea1f8 DC	366
fb4ea1f8 DC	367	st_gyro_deallocate_ring(indio_dev);
7be56a8f DC	368	}
	369	EXPORT_SYMBOL(st_gyro_common_remove);
	370
	371	MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
	372	MODULE_DESCRIPTION("STMicroelectronics gyroscopes driver");
	373	MODULE_LICENSE("GPL v2");