Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 20e79c51 authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Greg Kroah-Hartman
Browse files

staging:iio:imu remove adis16300 driver. 



Support is now provided by the unified adis16400 driver.

Signed-off-by: default avatarJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 8e886e65

drivers/staging/iio/imu/Kconfig

+0 −9
Original line number Diff line number Diff line
@@ -3,15 +3,6 @@ 
#

comment "Inertial measurement units"



config ADIS16300

	tristate "Analog Devices ADIS16300 IMU SPI driver"

	depends on SPI

	select IIO_SW_RING if IIO_RING_BUFFER

	select IIO_TRIGGER if IIO_RING_BUFFER

	help

	  Say yes here to build support for Analog Devices adis16300 four degrees

	  of freedom inertial sensor.



config ADIS16400

	tristate "Analog Devices ADIS16400 and similar IMU SPI driver"

	depends on SPI

drivers/staging/iio/imu/Makefile

+0 −4
Original line number Diff line number Diff line
@@ -2,10 +2,6 @@ 
# Makefile for Inertial Measurement Units

#



adis16300-y             := adis16300_core.o

adis16300-$(CONFIG_IIO_RING_BUFFER) += adis16300_ring.o adis16300_trigger.o

obj-$(CONFIG_ADIS16300) += adis16300.o



adis16400-y             := adis16400_core.o

adis16400-$(CONFIG_IIO_RING_BUFFER) += adis16400_ring.o adis16400_trigger.o

obj-$(CONFIG_ADIS16400) += adis16400.o

drivers/staging/iio/imu/adis16300.h

deleted100644 → 0
+0 −184
Original line number Diff line number Diff line 
#ifndef SPI_ADIS16300_H_

#define SPI_ADIS16300_H_



#define ADIS16300_STARTUP_DELAY	220 /* ms */



#define ADIS16300_READ_REG(a)    a

#define ADIS16300_WRITE_REG(a) ((a) | 0x80)



#define ADIS16300_FLASH_CNT  0x00 /* Flash memory write count */

#define ADIS16300_SUPPLY_OUT 0x02 /* Power supply measurement */

#define ADIS16300_XGYRO_OUT 0x04 /* X-axis gyroscope output */

#define ADIS16300_XACCL_OUT 0x0A /* X-axis accelerometer output */

#define ADIS16300_YACCL_OUT 0x0C /* Y-axis accelerometer output */

#define ADIS16300_ZACCL_OUT 0x0E /* Z-axis accelerometer output */

#define ADIS16300_TEMP_OUT  0x10 /* Temperature output */

#define ADIS16300_XINCLI_OUT 0x12 /* X-axis inclinometer output measurement */

#define ADIS16300_YINCLI_OUT 0x14 /* Y-axis inclinometer output measurement */

#define ADIS16300_AUX_ADC   0x16 /* Auxiliary ADC measurement */



/* Calibration parameters */

#define ADIS16300_XGYRO_OFF 0x1A /* X-axis gyroscope bias offset factor */

#define ADIS16300_XACCL_OFF 0x20 /* X-axis acceleration bias offset factor */

#define ADIS16300_YACCL_OFF 0x22 /* Y-axis acceleration bias offset factor */

#define ADIS16300_ZACCL_OFF 0x24 /* Z-axis acceleration bias offset factor */



#define ADIS16300_GPIO_CTRL 0x32 /* Auxiliary digital input/output control */

#define ADIS16300_MSC_CTRL  0x34 /* Miscellaneous control */

#define ADIS16300_SMPL_PRD  0x36 /* Internal sample period (rate) control */

#define ADIS16300_SENS_AVG  0x38 /* Dynamic range and digital filter control */

#define ADIS16300_SLP_CNT   0x3A /* Sleep mode control */

#define ADIS16300_DIAG_STAT 0x3C /* System status */



/* Alarm functions */

#define ADIS16300_GLOB_CMD  0x3E /* System command */

#define ADIS16300_ALM_MAG1  0x26 /* Alarm 1 amplitude threshold */

#define ADIS16300_ALM_MAG2  0x28 /* Alarm 2 amplitude threshold */

#define ADIS16300_ALM_SMPL1 0x2A /* Alarm 1 sample size */

#define ADIS16300_ALM_SMPL2 0x2C /* Alarm 2 sample size */

#define ADIS16300_ALM_CTRL  0x2E /* Alarm control */

#define ADIS16300_AUX_DAC   0x30 /* Auxiliary DAC data */



#define ADIS16300_ERROR_ACTIVE			(1<<14)

#define ADIS16300_NEW_DATA			(1<<15)



/* MSC_CTRL */

#define ADIS16300_MSC_CTRL_MEM_TEST		(1<<11)

#define ADIS16300_MSC_CTRL_INT_SELF_TEST	(1<<10)

#define ADIS16300_MSC_CTRL_NEG_SELF_TEST	(1<<9)

#define ADIS16300_MSC_CTRL_POS_SELF_TEST	(1<<8)

#define ADIS16300_MSC_CTRL_GYRO_BIAS		(1<<7)

#define ADIS16300_MSC_CTRL_ACCL_ALIGN		(1<<6)

#define ADIS16300_MSC_CTRL_DATA_RDY_EN		(1<<2)

#define ADIS16300_MSC_CTRL_DATA_RDY_POL_HIGH	(1<<1)

#define ADIS16300_MSC_CTRL_DATA_RDY_DIO2	(1<<0)



/* SMPL_PRD */

#define ADIS16300_SMPL_PRD_TIME_BASE	(1<<7)

#define ADIS16300_SMPL_PRD_DIV_MASK	0x7F



/* DIAG_STAT */

#define ADIS16300_DIAG_STAT_ZACCL_FAIL	(1<<15)

#define ADIS16300_DIAG_STAT_YACCL_FAIL	(1<<14)

#define ADIS16300_DIAG_STAT_XACCL_FAIL	(1<<13)

#define ADIS16300_DIAG_STAT_XGYRO_FAIL	(1<<10)

#define ADIS16300_DIAG_STAT_ALARM2	(1<<9)

#define ADIS16300_DIAG_STAT_ALARM1	(1<<8)

#define ADIS16300_DIAG_STAT_FLASH_CHK	(1<<6)

#define ADIS16300_DIAG_STAT_SELF_TEST	(1<<5)

#define ADIS16300_DIAG_STAT_OVERFLOW	(1<<4)

#define ADIS16300_DIAG_STAT_SPI_FAIL	(1<<3)

#define ADIS16300_DIAG_STAT_FLASH_UPT	(1<<2)

#define ADIS16300_DIAG_STAT_POWER_HIGH	(1<<1)

#define ADIS16300_DIAG_STAT_POWER_LOW	(1<<0)



/* GLOB_CMD */

#define ADIS16300_GLOB_CMD_SW_RESET	(1<<7)

#define ADIS16300_GLOB_CMD_P_AUTO_NULL	(1<<4)

#define ADIS16300_GLOB_CMD_FLASH_UPD	(1<<3)

#define ADIS16300_GLOB_CMD_DAC_LATCH	(1<<2)

#define ADIS16300_GLOB_CMD_FAC_CALIB	(1<<1)

#define ADIS16300_GLOB_CMD_AUTO_NULL	(1<<0)



/* SLP_CNT */

#define ADIS16300_SLP_CNT_POWER_OFF	(1<<8)



#define ADIS16300_MAX_TX 18

#define ADIS16300_MAX_RX 18



#define ADIS16300_SPI_SLOW	(u32)(300 * 1000)

#define ADIS16300_SPI_BURST	(u32)(1000 * 1000)

#define ADIS16300_SPI_FAST	(u32)(2000 * 1000)



/**

 * struct adis16300_state - device instance specific data

 * @us:			actual spi_device

 * @work_trigger_to_ring: bh for triggered event handling

 * @inter:		used to check if new interrupt has been triggered

 * @last_timestamp:	passing timestamp from th to bh of interrupt handler

 * @indio_dev:		industrial I/O device structure

 * @trig:		data ready trigger registered with iio

 * @tx:			transmit buffer

 * @rx:			receive buffer

 * @buf_lock:		mutex to protect tx and rx

 **/

struct adis16300_state {

	struct spi_device		*us;

	struct work_struct		work_trigger_to_ring;

	s64				last_timestamp;

	struct iio_dev			*indio_dev;

	struct iio_trigger		*trig;

	u8				*tx;

	u8				*rx;

	struct mutex			buf_lock;

};



int adis16300_set_irq(struct device *dev, bool enable);



#ifdef CONFIG_IIO_RING_BUFFER

/* At the moment triggers are only used for ring buffer

 * filling. This may change!

 */



#define ADIS16300_SCAN_SUPPLY	0

#define ADIS16300_SCAN_GYRO_X	1

#define ADIS16300_SCAN_ACC_X	2

#define ADIS16300_SCAN_ACC_Y	3

#define ADIS16300_SCAN_ACC_Z	4

#define ADIS16300_SCAN_TEMP	5

#define ADIS16300_SCAN_ADC_0	6

#define ADIS16300_SCAN_INCLI_X	7

#define ADIS16300_SCAN_INCLI_Y	8



void adis16300_remove_trigger(struct iio_dev *indio_dev);

int adis16300_probe_trigger(struct iio_dev *indio_dev);



ssize_t adis16300_read_data_from_ring(struct device *dev,

				      struct device_attribute *attr,

				      char *buf);





int adis16300_configure_ring(struct iio_dev *indio_dev);

void adis16300_unconfigure_ring(struct iio_dev *indio_dev);



int adis16300_initialize_ring(struct iio_ring_buffer *ring);

void adis16300_uninitialize_ring(struct iio_ring_buffer *ring);

#else /* CONFIG_IIO_RING_BUFFER */



static inline void adis16300_remove_trigger(struct iio_dev *indio_dev)

{

}



static inline int adis16300_probe_trigger(struct iio_dev *indio_dev)

{

	return 0;

}



static inline ssize_t

adis16300_read_data_from_ring(struct device *dev,

			      struct device_attribute *attr,

			      char *buf)

{

	return 0;

}



static int adis16300_configure_ring(struct iio_dev *indio_dev)

{

	return 0;

}



static inline void adis16300_unconfigure_ring(struct iio_dev *indio_dev)

{

}



static inline int adis16300_initialize_ring(struct iio_ring_buffer *ring)

{

	return 0;

}



static inline void adis16300_uninitialize_ring(struct iio_ring_buffer *ring)

{

}



#endif /* CONFIG_IIO_RING_BUFFER */

#endif /* SPI_ADIS16300_H_ */

drivers/staging/iio/imu/adis16300_core.c

deleted100644 → 0
+0 −732

File deleted.

Preview size limit exceeded, changes collapsed.

drivers/staging/iio/imu/adis16300_ring.c

deleted100644 → 0
+0 −238
Original line number Diff line number Diff line 
#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/gpio.h>

#include <linux/workqueue.h>

#include <linux/mutex.h>

#include <linux/device.h>

#include <linux/kernel.h>

#include <linux/spi/spi.h>

#include <linux/slab.h>

#include <linux/sysfs.h>

#include <linux/list.h>



#include "../iio.h"

#include "../sysfs.h"

#include "../ring_sw.h"

#include "../accel/accel.h"

#include "../trigger.h"

#include "adis16300.h"



static IIO_SCAN_EL_C(in0_supply, ADIS16300_SCAN_SUPPLY,

		     ADIS16300_SUPPLY_OUT, NULL);

static IIO_CONST_ATTR_SCAN_EL_TYPE(in0_supply, u, 12, 16);

static IIO_SCAN_EL_C(gyro_x, ADIS16300_SCAN_GYRO_X, ADIS16300_XGYRO_OUT, NULL);

static IIO_CONST_ATTR_SCAN_EL_TYPE(gyro, s, 14, 16);



static IIO_SCAN_EL_C(accel_x, ADIS16300_SCAN_ACC_X, ADIS16300_XACCL_OUT, NULL);

static IIO_SCAN_EL_C(accel_y, ADIS16300_SCAN_ACC_Y, ADIS16300_YACCL_OUT, NULL);

static IIO_SCAN_EL_C(accel_z, ADIS16300_SCAN_ACC_Z, ADIS16300_ZACCL_OUT, NULL);

static IIO_CONST_ATTR_SCAN_EL_TYPE(accel, s, 14, 16);



static IIO_SCAN_EL_C(temp, ADIS16300_SCAN_TEMP, ADIS16300_TEMP_OUT, NULL);

static IIO_CONST_ATTR_SCAN_EL_TYPE(temp, s, 12, 16);



static IIO_SCAN_EL_C(in1, ADIS16300_SCAN_ADC_0, ADIS16300_AUX_ADC, NULL);

static IIO_CONST_ATTR_SCAN_EL_TYPE(in1, u, 12, 16);



static IIO_SCAN_EL_C(incli_x, ADIS16300_SCAN_INCLI_X,

		     ADIS16300_XINCLI_OUT, NULL);

static IIO_SCAN_EL_C(incli_y, ADIS16300_SCAN_INCLI_Y,

		     ADIS16300_YINCLI_OUT, NULL);

static IIO_CONST_ATTR_SCAN_EL_TYPE(incli, s, 13, 16);



static IIO_SCAN_EL_TIMESTAMP(9);

static IIO_CONST_ATTR_SCAN_EL_TYPE(timestamp, s, 64, 64);



static struct attribute *adis16300_scan_el_attrs[] = {

	&iio_scan_el_in0_supply.dev_attr.attr,

	&iio_const_attr_in0_supply_index.dev_attr.attr,

	&iio_const_attr_in0_supply_type.dev_attr.attr,

	&iio_scan_el_gyro_x.dev_attr.attr,

	&iio_const_attr_gyro_x_index.dev_attr.attr,

	&iio_const_attr_gyro_type.dev_attr.attr,

	&iio_scan_el_temp.dev_attr.attr,

	&iio_const_attr_temp_index.dev_attr.attr,

	&iio_const_attr_temp_type.dev_attr.attr,

	&iio_scan_el_accel_x.dev_attr.attr,

	&iio_const_attr_accel_x_index.dev_attr.attr,

	&iio_scan_el_accel_y.dev_attr.attr,

	&iio_const_attr_accel_y_index.dev_attr.attr,

	&iio_scan_el_accel_z.dev_attr.attr,

	&iio_const_attr_accel_z_index.dev_attr.attr,

	&iio_const_attr_accel_type.dev_attr.attr,

	&iio_scan_el_incli_x.dev_attr.attr,

	&iio_const_attr_incli_x_index.dev_attr.attr,

	&iio_scan_el_incli_y.dev_attr.attr,

	&iio_const_attr_incli_y_index.dev_attr.attr,

	&iio_const_attr_incli_type.dev_attr.attr,

	&iio_scan_el_in1.dev_attr.attr,

	&iio_const_attr_in1_index.dev_attr.attr,

	&iio_const_attr_in1_type.dev_attr.attr,

	&iio_scan_el_timestamp.dev_attr.attr,

	&iio_const_attr_timestamp_index.dev_attr.attr,

	&iio_const_attr_timestamp_type.dev_attr.attr,

	NULL,

};



static struct attribute_group adis16300_scan_el_group = {

	.attrs = adis16300_scan_el_attrs,

	.name = "scan_elements",

};



/**

 * adis16300_poll_func_th() top half interrupt handler called by trigger

 * @private_data:	iio_dev

 **/

static void adis16300_poll_func_th(struct iio_dev *indio_dev, s64 time)

{

	struct adis16300_state *st = iio_dev_get_devdata(indio_dev);

	st->last_timestamp = time;

	schedule_work(&st->work_trigger_to_ring);

	/* Indicate that this interrupt is being handled */



	/* Technically this is trigger related, but without this

	 * handler running there is currently no way for the interrupt

	 * to clear.

	 */

}



/**

 * adis16300_spi_read_burst() - read all data registers

 * @dev: device associated with child of actual device (iio_dev or iio_trig)

 * @rx: somewhere to pass back the value read (min size is 24 bytes)

 **/

static int adis16300_spi_read_burst(struct device *dev, u8 *rx)

{

	struct spi_message msg;

	struct iio_dev *indio_dev = dev_get_drvdata(dev);

	struct adis16300_state *st = iio_dev_get_devdata(indio_dev);

	u32 old_speed_hz = st->us->max_speed_hz;

	int ret;



	struct spi_transfer xfers[] = {

		{

			.tx_buf = st->tx,

			.bits_per_word = 8,

			.len = 2,

			.cs_change = 0,

		}, {

			.rx_buf = rx,

			.bits_per_word = 8,

			.len = 18,

			.cs_change = 0,

		},

	};



	mutex_lock(&st->buf_lock);

	st->tx[0] = ADIS16300_READ_REG(ADIS16300_GLOB_CMD);

	st->tx[1] = 0;



	spi_message_init(&msg);

	spi_message_add_tail(&xfers[0], &msg);

	spi_message_add_tail(&xfers[1], &msg);



	st->us->max_speed_hz = ADIS16300_SPI_BURST;

	spi_setup(st->us);



	ret = spi_sync(st->us, &msg);

	if (ret)

		dev_err(&st->us->dev, "problem when burst reading");



	st->us->max_speed_hz = old_speed_hz;

	spi_setup(st->us);

	mutex_unlock(&st->buf_lock);

	return ret;

}



/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device

 * specific to be rolled into the core.

 */

static void adis16300_trigger_bh_to_ring(struct work_struct *work_s)

{

	struct adis16300_state *st

		= container_of(work_s, struct adis16300_state,

			       work_trigger_to_ring);

	struct iio_ring_buffer *ring = st->indio_dev->ring;



	int i = 0;

	s16 *data;

	size_t datasize = ring->access.get_bytes_per_datum(ring);



	data = kmalloc(datasize , GFP_KERNEL);

	if (data == NULL) {

		dev_err(&st->us->dev, "memory alloc failed in ring bh");

		return;

	}



	if (ring->scan_count)

		if (adis16300_spi_read_burst(&st->indio_dev->dev, st->rx) >= 0)

			for (; i < ring->scan_count; i++)

				data[i] = be16_to_cpup(

					(__be16 *)&(st->rx[i*2]));



	/* Guaranteed to be aligned with 8 byte boundary */

	if (ring->scan_timestamp)

		*((s64 *)(data + ((i + 3)/4)*4)) = st->last_timestamp;



	ring->access.store_to(ring,

			(u8 *)data,

			st->last_timestamp);



	iio_trigger_notify_done(st->indio_dev->trig);

	kfree(data);



	return;

}



void adis16300_unconfigure_ring(struct iio_dev *indio_dev)

{

	kfree(indio_dev->pollfunc);

	iio_sw_rb_free(indio_dev->ring);

}



int adis16300_configure_ring(struct iio_dev *indio_dev)

{

	int ret = 0;

	struct adis16300_state *st = indio_dev->dev_data;

	struct iio_ring_buffer *ring;

	INIT_WORK(&st->work_trigger_to_ring, adis16300_trigger_bh_to_ring);



	ring = iio_sw_rb_allocate(indio_dev);

	if (!ring) {

		ret = -ENOMEM;

		return ret;

	}

	indio_dev->ring = ring;

	/* Effectively select the ring buffer implementation */

	iio_ring_sw_register_funcs(&ring->access);

	ring->bpe = 2;

	ring->scan_el_attrs = &adis16300_scan_el_group;

	ring->scan_timestamp = true;

	ring->preenable = &iio_sw_ring_preenable;

	ring->postenable = &iio_triggered_ring_postenable;

	ring->predisable = &iio_triggered_ring_predisable;

	ring->owner = THIS_MODULE;



	/* Set default scan mode */

	iio_scan_mask_set(ring, iio_scan_el_in0_supply.number);

	iio_scan_mask_set(ring, iio_scan_el_gyro_x.number);

	iio_scan_mask_set(ring, iio_scan_el_accel_x.number);

	iio_scan_mask_set(ring, iio_scan_el_accel_y.number);

	iio_scan_mask_set(ring, iio_scan_el_accel_z.number);

	iio_scan_mask_set(ring, iio_scan_el_temp.number);

	iio_scan_mask_set(ring, iio_scan_el_in1.number);

	iio_scan_mask_set(ring, iio_scan_el_incli_x.number);

	iio_scan_mask_set(ring, iio_scan_el_incli_y.number);



	ret = iio_alloc_pollfunc(indio_dev, NULL, &adis16300_poll_func_th);

	if (ret)

		goto error_iio_sw_rb_free;



	indio_dev->modes |= INDIO_RING_TRIGGERED;

	return 0;



error_iio_sw_rb_free:

	iio_sw_rb_free(indio_dev->ring);

	return ret;

}