staging: adis16255 delete driver

This patch deletes the adis16255 driver from staging as a similar
implementation exists inside the iio subsystem.

Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

6 files changed, 0 insertions, 495 deletions

diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 1f61914a3ab8..f2d9fe8cde5f 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -143,8 +143,6 @@ source "drivers/staging/cxt1e1/Kconfig"
 
 source "drivers/staging/ti-st/Kconfig"
 
-source "drivers/staging/adis16255/Kconfig"
-
 source "drivers/staging/xgifb/Kconfig"
 
 source "drivers/staging/msm/Kconfig"
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 75c0c1ff1cf5..10c72bb1940d 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -54,7 +54,6 @@ obj-$(CONFIG_VIDEO_DT3155)	+= dt3155v4l/
 obj-$(CONFIG_CRYSTALHD)		+= crystalhd/
 obj-$(CONFIG_CXT1E1)		+= cxt1e1/
 obj-$(CONFIG_TI_ST)		+= ti-st/
-obj-$(CONFIG_ADIS16255)		+= adis16255/
 obj-$(CONFIG_FB_XGI)		+= xgifb/
 obj-$(CONFIG_MSM_STAGING)	+= msm/
 obj-$(CONFIG_EASYCAP)		+= easycap/
diff --git a/drivers/staging/adis16255/Kconfig b/drivers/staging/adis16255/Kconfig
deleted file mode 100644
index a883c1f4478b..000000000000
--- a/drivers/staging/adis16255/Kconfig
+++ /dev/null
@@ -1,11 +0,0 @@
-config ADIS16255
-	tristate "Analog Devices ADIS16250/16255"
-	depends on SPI && SYSFS
-	---help---
-	If you say yes here you get support for the Analog Devices
-	ADIS16250/16255 Low Power Gyroscope. The driver exposes
-	orientation and gyroscope value, as well as sample rate
-	to the sysfs.
-
-	This driver can also be built as a module. If so, the module
-	will be called adis16255.
diff --git a/drivers/staging/adis16255/Makefile b/drivers/staging/adis16255/Makefile
deleted file mode 100644
index 8c3908106bfa..000000000000
--- a/drivers/staging/adis16255/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-$(CONFIG_ADIS16255)		+= adis16255.o
diff --git a/drivers/staging/adis16255/adis16255.c b/drivers/staging/adis16255/adis16255.c
deleted file mode 100644
index 8d4d7cbab979..000000000000
--- a/drivers/staging/adis16255/adis16255.c
+++ /dev/null
@@ -1,468 +0,0 @@
-/*
- * Analog Devices ADIS16250/ADIS16255 Low Power Gyroscope
- *
- * Written by: Matthias Brugger <m_brugger@web.de>
- *
- * Copyright (C) 2010 Fraunhofer Institute for Integrated Circuits
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the
- * Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- */
-
-/*
- * The driver just has a bare interface to the sysfs (sample rate in Hz,
- * orientation (x, y, z) and gyroscope data in °/sec.
- *
- * It should be added to iio subsystem when this has left staging.
- *
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-
-#include <linux/interrupt.h>
-#include <linux/sysfs.h>
-#include <linux/stat.h>
-#include <linux/delay.h>
-
-#include <linux/gpio.h>
-
-#include <linux/spi/spi.h>
-#include <linux/workqueue.h>
-
-#include "adis16255.h"
-
-#define ADIS_STATUS        0x3d
-#define ADIS_SMPL_PRD_MSB  0x37
-#define ADIS_SMPL_PRD_LSB  0x36
-#define ADIS_MSC_CTRL_MSB  0x35
-#define ADIS_MSC_CTRL_LSB  0x34
-#define ADIS_GPIO_CTRL     0x33
-#define ADIS_ALM_SMPL1     0x25
-#define ADIS_ALM_MAG1      0x21
-#define ADIS_GYRO_SCALE    0x17
-#define ADIS_GYRO_OUT      0x05
-#define ADIS_SUPPLY_OUT    0x03
-#define ADIS_ENDURANCE     0x01
-
-/*
- * data structure for every sensor
- *
- * @dev:       Driver model representation of the device.
- * @spi:       Pointer to the spi device which will manage i/o to spi bus.
- * @data:      Last read data from device.
- * @irq_adis:  GPIO Number of IRQ signal
- * @irq:       irq line manage by kernel
- * @negative:  indicates if sensor is upside down (negative == 1)
- * @direction: indicates axis (x, y, z) the sensor is meassuring
- */
-struct spi_adis16255_data {
-	struct device dev;
-	struct spi_device *spi;
-	s16 data;
-	int irq;
-	u8 negative;
-	char direction;
-};
-
-/*-------------------------------------------------------------------------*/
-
-static int spi_adis16255_read_data(struct spi_adis16255_data *spiadis,
-					u8 adr,
-					u8 *rbuf)
-{
-	struct spi_device *spi = spiadis->spi;
-	struct spi_message msg;
-	struct spi_transfer xfer1, xfer2;
-	u8 *buf, *rx;
-	int ret;
-
-	buf = kzalloc(4, GFP_KERNEL);
-	if (buf == NULL)
-		return -ENOMEM;
-
-	rx = kzalloc(4, GFP_KERNEL);
-	if (rx == NULL) {
-		ret = -ENOMEM;
-		goto err_buf;
-	}
-
-	buf[0] = adr;
-
-	spi_message_init(&msg);
-	memset(&xfer1, 0, sizeof(xfer1));
-	memset(&xfer2, 0, sizeof(xfer2));
-
-	xfer1.tx_buf = buf;
-	xfer1.rx_buf = buf + 2;
-	xfer1.len = 2;
-	xfer1.delay_usecs = 9;
-
-	xfer2.tx_buf = rx + 2;
-	xfer2.rx_buf = rx;
-	xfer2.len = 2;
-
-	spi_message_add_tail(&xfer1, &msg);
-	spi_message_add_tail(&xfer2, &msg);
-
-	ret = spi_sync(spi, &msg);
-	if (ret == 0) {
-		rbuf[0] = rx[0];
-		rbuf[1] = rx[1];
-	}
-
-	kfree(rx);
-err_buf:
-	kfree(buf);
-
-	return ret;
-}
-
-static int spi_adis16255_write_data(struct spi_adis16255_data *spiadis,
-					u8 adr1,
-					u8 adr2,
-					u8 *wbuf)
-{
-	struct spi_device *spi = spiadis->spi;
-	struct spi_message   msg;
-	struct spi_transfer  xfer1, xfer2;
-	u8       *buf, *rx;
-	int         ret;
-
-	buf = kmalloc(4, GFP_KERNEL);
-	if (buf == NULL)
-		return -ENOMEM;
-
-	rx = kzalloc(4, GFP_KERNEL);
-	if (rx == NULL) {
-		ret = -ENOMEM;
-		goto err_buf;
-	}
-
-	spi_message_init(&msg);
-	memset(&xfer1, 0, sizeof(xfer1));
-	memset(&xfer2, 0, sizeof(xfer2));
-
-	buf[0] = adr1 | 0x80;
-	buf[1] = *wbuf;
-
-	buf[2] = adr2 | 0x80;
-	buf[3] = *(wbuf + 1);
-
-	xfer1.tx_buf = buf;
-	xfer1.rx_buf = rx;
-	xfer1.len = 2;
-	xfer1.delay_usecs = 9;
-
-	xfer2.tx_buf = buf+2;
-	xfer2.rx_buf = rx+2;
-	xfer2.len = 2;
-
-	spi_message_add_tail(&xfer1, &msg);
-	spi_message_add_tail(&xfer2, &msg);
-
-	ret = spi_sync(spi, &msg);
-	if (ret != 0)
-		dev_warn(&spi->dev, "write data to %#x %#x failed\n",
-				buf[0], buf[2]);
-
-	kfree(rx);
-err_buf:
-	kfree(buf);
-	return ret;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static irqreturn_t adis_irq_thread(int irq, void *dev_id)
-{
-	struct spi_adis16255_data *spiadis = dev_id;
-	int status;
-	u16 value = 0;
-
-	status =  spi_adis16255_read_data(spiadis, ADIS_GYRO_OUT, (u8 *)&value);
-	if (status != 0) {
-		dev_warn(&spiadis->spi->dev, "SPI FAILED\n");
-		goto exit;
-	}
-
-	/* perform on new data only... */
-	if (value & 0x8000) {
-		/* delete error and new data bit */
-		value = value & 0x3fff;
-		/* set negative value */
-		if (value & 0x2000)
-			value = value | 0xe000;
-
-		if (likely(spiadis->negative))
-			value = -value;
-
-		spiadis->data = (s16) value;
-	}
-
-exit:
-	return IRQ_HANDLED;
-}
-
-/*-------------------------------------------------------------------------*/
-
-ssize_t adis16255_show_data(struct device *device,
-		struct device_attribute *da,
-		char *buf)
-{
-	struct spi_adis16255_data *spiadis = dev_get_drvdata(device);
-	return snprintf(buf, PAGE_SIZE, "%d\n", spiadis->data);
-}
-DEVICE_ATTR(data, S_IRUGO , adis16255_show_data, NULL);
-
-ssize_t adis16255_show_direction(struct device *device,
-		struct device_attribute *da,
-		char *buf)
-{
-	struct spi_adis16255_data *spiadis = dev_get_drvdata(device);
-	return snprintf(buf, PAGE_SIZE, "%c\n", spiadis->direction);
-}
-DEVICE_ATTR(direction, S_IRUGO , adis16255_show_direction, NULL);
-
-ssize_t adis16255_show_sample_rate(struct device *device,
-		struct device_attribute *da,
-		char *buf)
-{
-	struct spi_adis16255_data *spiadis = dev_get_drvdata(device);
-	int status = 0;
-	u16 value = 0;
-	int ts = 0;
-
-	status = spi_adis16255_read_data(spiadis, ADIS_SMPL_PRD_MSB,
-				(u8 *)&value);
-	if (status != 0)
-		return -EINVAL;
-
-	if (value & 0x80) {
-		/* timebase = 60.54 ms */
-		ts = 60540 * ((0x7f & value) + 1);
-	} else {
-		/* timebase = 1.953 ms */
-		ts = 1953 * ((0x7f & value) + 1);
-	}
-
-	return snprintf(buf, PAGE_SIZE, "%d\n", (1000*1000)/ts);
-}
-DEVICE_ATTR(sample_rate, S_IRUGO , adis16255_show_sample_rate, NULL);
-
-static struct attribute *adis16255_attributes[] = {
-	&dev_attr_data.attr,
-	&dev_attr_direction.attr,
-	&dev_attr_sample_rate.attr,
-	NULL
-};
-
-static const struct attribute_group adis16255_attr_group = {
-	.attrs = adis16255_attributes,
-};
-
-/*-------------------------------------------------------------------------*/
-
-static int spi_adis16255_shutdown(struct spi_adis16255_data *spiadis)
-{
-	u16 value = 0;
-	/* turn sensor off */
-	spi_adis16255_write_data(spiadis,
-			ADIS_SMPL_PRD_MSB, ADIS_SMPL_PRD_LSB,
-			(u8 *)&value);
-	spi_adis16255_write_data(spiadis,
-			ADIS_MSC_CTRL_MSB, ADIS_MSC_CTRL_LSB,
-			(u8 *)&value);
-	return 0;
-}
-
-static int spi_adis16255_bringup(struct spi_adis16255_data *spiadis)
-{
-	int status = 0;
-	u16 value = 0;
-
-	status = spi_adis16255_read_data(spiadis, ADIS_GYRO_SCALE,
-				(u8 *)&value);
-	if (status != 0)
-		goto err;
-	if (value != 0x0800) {
-		dev_warn(&spiadis->spi->dev, "Scale factor is none default "
-				"value (%.4x)\n", value);
-	}
-
-	/* timebase = 1.953 ms, Ns = 0 -> 512 Hz sample rate */
-	value =  0x0001;
-	status = spi_adis16255_write_data(spiadis,
-				ADIS_SMPL_PRD_MSB, ADIS_SMPL_PRD_LSB,
-				(u8 *)&value);
-	if (status != 0)
-		goto err;
-
-	/* start internal self-test */
-	value = 0x0400;
-	status = spi_adis16255_write_data(spiadis,
-				ADIS_MSC_CTRL_MSB, ADIS_MSC_CTRL_LSB,
-				(u8 *)&value);
-	if (status != 0)
-		goto err;
-
-	/* wait 35 ms to finish self-test */
-	msleep(35);
-
-	value = 0x0000;
-	status = spi_adis16255_read_data(spiadis, ADIS_STATUS,
-				(u8 *)&value);
-	if (status != 0)
-		goto err;
-
-	if (value & 0x23) {
-		if (value & 0x20) {
-			dev_warn(&spiadis->spi->dev, "self-test error\n");
-			status = -ENODEV;
-			goto err;
-		} else if (value & 0x3)	{
-			dev_warn(&spiadis->spi->dev, "Sensor voltage "
-						"out of range.\n");
-			status = -ENODEV;
-			goto err;
-		}
-	}
-
-	/* set interrupt to active high on DIO0 when data ready */
-	value = 0x0006;
-	status = spi_adis16255_write_data(spiadis,
-				ADIS_MSC_CTRL_MSB, ADIS_MSC_CTRL_LSB,
-				(u8 *)&value);
-	if (status != 0)
-		goto err;
-	return status;
-
-err:
-	spi_adis16255_shutdown(spiadis);
-	return status;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int __devinit spi_adis16255_probe(struct spi_device *spi)
-{
-
-	struct adis16255_init_data *init_data = spi->dev.platform_data;
-	struct spi_adis16255_data  *spiadis;
-	int status = 0;
-
-	spiadis = kzalloc(sizeof(*spiadis), GFP_KERNEL);
-	if (!spiadis)
-		return -ENOMEM;
-
-	spiadis->spi = spi;
-	spiadis->direction = init_data->direction;
-
-	if (init_data->negative)
-		spiadis->negative = 1;
-
-	status = gpio_request(init_data->irq, "adis16255");
-	if (status != 0)
-		goto err;
-
-	status = gpio_direction_input(init_data->irq);
-	if (status != 0)
-		goto gpio_err;
-
-	spiadis->irq = gpio_to_irq(init_data->irq);
-
-	status = request_threaded_irq(spiadis->irq,
-			NULL, adis_irq_thread,
-			IRQF_DISABLED, "adis-driver", spiadis);
-
-	if (status != 0) {
-		dev_err(&spi->dev, "IRQ request failed\n");
-		goto gpio_err;
-	}
-
-	dev_dbg(&spi->dev, "GPIO %d IRQ %d\n", init_data->irq, spiadis->irq);
-
-	dev_set_drvdata(&spi->dev, spiadis);
-	status = sysfs_create_group(&spi->dev.kobj, &adis16255_attr_group);
-	if (status != 0)
-		goto irq_err;
-
-	status = spi_adis16255_bringup(spiadis);
-	if (status != 0)
-		goto sysfs_err;
-
-	dev_info(&spi->dev, "spi_adis16255 driver added!\n");
-
-	return status;
-
-sysfs_err:
-	sysfs_remove_group(&spiadis->spi->dev.kobj, &adis16255_attr_group);
-irq_err:
-	free_irq(spiadis->irq, spiadis);
-gpio_err:
-	gpio_free(init_data->irq);
-err:
-	kfree(spiadis);
-	return status;
-}
-
-static int __devexit spi_adis16255_remove(struct spi_device *spi)
-{
-	struct spi_adis16255_data  *spiadis    = dev_get_drvdata(&spi->dev);
-
-	spi_adis16255_shutdown(spiadis);
-
-	free_irq(spiadis->irq, spiadis);
-	gpio_free(irq_to_gpio(spiadis->irq));
-
-	sysfs_remove_group(&spiadis->spi->dev.kobj, &adis16255_attr_group);
-
-	kfree(spiadis);
-
-	dev_info(&spi->dev, "spi_adis16255 driver removed!\n");
-	return 0;
-}
-
-static struct spi_driver spi_adis16255_drv = {
-	.driver = {
-		.name =  "spi_adis16255",
-		.owner = THIS_MODULE,
-	},
-	.probe = spi_adis16255_probe,
-	.remove =   __devexit_p(spi_adis16255_remove),
-};
-
-/*-------------------------------------------------------------------------*/
-
-static int __init spi_adis16255_init(void)
-{
-	return spi_register_driver(&spi_adis16255_drv);
-}
-module_init(spi_adis16255_init);
-
-static void __exit spi_adis16255_exit(void)
-{
-	spi_unregister_driver(&spi_adis16255_drv);
-}
-module_exit(spi_adis16255_exit);
-
-MODULE_AUTHOR("Matthias Brugger");
-MODULE_DESCRIPTION("SPI device driver for ADIS16255 sensor");
-MODULE_LICENSE("GPL");
diff --git a/drivers/staging/adis16255/adis16255.h b/drivers/staging/adis16255/adis16255.h
deleted file mode 100644
index 03e07001bab2..000000000000
--- a/drivers/staging/adis16255/adis16255.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#ifndef ADIS16255_H
-#define ADIS16255_H
-
-#include <linux/types.h>
-
-struct adis16255_init_data {
-	char direction;
-	u8   negative;
-	int  irq;
-};
-
-#endif