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Commit 9444a300 authored by Robert Dolca's avatar Robert Dolca Committed by Jonathan Cameron
Browse files

IIO: Add support for L3GD20H gyroscope 



It can be used exactly like L3GD20 but it has a different WhoAmI
register value.

Signed-off-by: default avatarRobert Dolca <robert.dolca@intel.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent d9d7b990

drivers/iio/gyro/st_gyro_core.c

+83 −0
Original line number Diff line number Diff line
@@ -87,6 +87,31 @@ 
#define ST_GYRO_2_DRDY_IRQ_INT2_MASK		0x08

#define ST_GYRO_2_MULTIREAD_BIT			true



/* CUSTOM VALUES FOR SENSOR 3 */

#define ST_GYRO_3_WAI_EXP			0xd7

#define ST_GYRO_3_ODR_ADDR			0x20

#define ST_GYRO_3_ODR_MASK			0xc0

#define ST_GYRO_3_ODR_AVL_95HZ_VAL		0x00

#define ST_GYRO_3_ODR_AVL_190HZ_VAL		0x01

#define ST_GYRO_3_ODR_AVL_380HZ_VAL		0x02

#define ST_GYRO_3_ODR_AVL_760HZ_VAL		0x03

#define ST_GYRO_3_PW_ADDR			0x20

#define ST_GYRO_3_PW_MASK			0x08

#define ST_GYRO_3_FS_ADDR			0x23

#define ST_GYRO_3_FS_MASK			0x30

#define ST_GYRO_3_FS_AVL_250_VAL		0x00

#define ST_GYRO_3_FS_AVL_500_VAL		0x01

#define ST_GYRO_3_FS_AVL_2000_VAL		0x02

#define ST_GYRO_3_FS_AVL_250_GAIN		IIO_DEGREE_TO_RAD(8750)

#define ST_GYRO_3_FS_AVL_500_GAIN		IIO_DEGREE_TO_RAD(17500)

#define ST_GYRO_3_FS_AVL_2000_GAIN		IIO_DEGREE_TO_RAD(70000)

#define ST_GYRO_3_BDU_ADDR			0x23

#define ST_GYRO_3_BDU_MASK			0x80

#define ST_GYRO_3_DRDY_IRQ_ADDR			0x22

#define ST_GYRO_3_DRDY_IRQ_INT2_MASK		0x08

#define ST_GYRO_3_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),
@@ -225,6 +250,64 @@ static const struct st_sensor_settings st_gyro_sensors_settings[] = { 
		.multi_read_bit = ST_GYRO_2_MULTIREAD_BIT,

		.bootime = 2,

	},

	{

		.wai = ST_GYRO_3_WAI_EXP,

		.sensors_supported = {

			[0] = L3GD20_GYRO_DEV_NAME,

		},

		.ch = (struct iio_chan_spec *)st_gyro_16bit_channels,

		.odr = {

			.addr = ST_GYRO_3_ODR_ADDR,

			.mask = ST_GYRO_3_ODR_MASK,

			.odr_avl = {

				{ 95, ST_GYRO_3_ODR_AVL_95HZ_VAL, },

				{ 190, ST_GYRO_3_ODR_AVL_190HZ_VAL, },

				{ 380, ST_GYRO_3_ODR_AVL_380HZ_VAL, },

				{ 760, ST_GYRO_3_ODR_AVL_760HZ_VAL, },

			},

		},

		.pw = {

			.addr = ST_GYRO_3_PW_ADDR,

			.mask = ST_GYRO_3_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_3_FS_ADDR,

			.mask = ST_GYRO_3_FS_MASK,

			.fs_avl = {

				[0] = {

					.num = ST_GYRO_FS_AVL_250DPS,

					.value = ST_GYRO_3_FS_AVL_250_VAL,

					.gain = ST_GYRO_3_FS_AVL_250_GAIN,

				},

				[1] = {

					.num = ST_GYRO_FS_AVL_500DPS,

					.value = ST_GYRO_3_FS_AVL_500_VAL,

					.gain = ST_GYRO_3_FS_AVL_500_GAIN,

				},

				[2] = {

					.num = ST_GYRO_FS_AVL_2000DPS,

					.value = ST_GYRO_3_FS_AVL_2000_VAL,

					.gain = ST_GYRO_3_FS_AVL_2000_GAIN,

				},

			},

		},

		.bdu = {

			.addr = ST_GYRO_3_BDU_ADDR,

			.mask = ST_GYRO_3_BDU_MASK,

		},

		.drdy_irq = {

			.addr = ST_GYRO_3_DRDY_IRQ_ADDR,

			.mask_int2 = ST_GYRO_3_DRDY_IRQ_INT2_MASK,

		},

		.multi_read_bit = ST_GYRO_3_MULTIREAD_BIT,

		.bootime = 2,

	},

};



static int st_gyro_read_raw(struct iio_dev *indio_dev,