Staging: IIO: Remove tsl2561 driver. Support merged with tsl2563.

This patch simply removes the tsl2561 driver.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Amit Kucheria <amit.kucheria@verdurent.com>

drivers/staging/iio/light/Kconfig

@@ -3,15 +3,6 @@
 #
 comment "Light sensors"
 
-config TSL2561
-       tristate "TAOS TSL2561 light-to-digital convertor"
-       depends on I2C
-       help
-	Say yes bere to build support for the TAOS light to digital
-	convertor.  This chip has two light sensors. One is broadband
-	including infrared whilst the other measures only infrared.
-	Provides direct access via sysfs.
-
 config SENSORS_TSL2563
 	tristate "TAOS TSL2563 ambient light sensor"
 	depends on I2C

drivers/staging/iio/light/Makefile

@@ -2,5 +2,4 @@
 # Makefile for industrial I/O Light sensors
 #
 
-obj-$(CONFIG_TSL2561)   += tsl2561.o
 obj-$(CONFIG_SENSORS_TSL2563)	+= tsl2563.o

drivers/staging/iio/light/tsl2561.c

-/*
- *  tsl2561.c - Linux kernel modules for light to digital convertor
- *
- *  Copyright (C) 2008-2009 Jonathan Cameron <jic23@cam.ac.uk>
- *
- *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *  Some portions based upon the tsl2550 driver.
- *
- *  This driver could probably be adapted easily to talk to the tsl2560 (smbus)
- *
- *  Needs some work to support the events this can generate.
- *  Todo: Implement interrupt handling.  Currently a hardware bug means
- *  this isn't available on my test board.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/i2c.h>
-#include "../iio.h"
-#include "../sysfs.h"
-#include "light.h"
-
-#define TSL2561_CONTROL_REGISTER 0x00
-#define TSL2561_TIMING_REGISTER 0x01
-#define TSL2561_THRESHLOW_LOW_REGISTER 0x02
-#define TSL2561_THRESHLOW_HIGH_REGISTER 0x03
-#define TSL2561_THRESHHIGH_LOW_REGISTER 0x04
-#define TSL2561_THRESHHIGH_HIGH_REGISTER 0x05
-#define TSL2561_INT_CONTROL_REGISTER 0x06
-
-#define TSL2561_INT_REG_INT_OFF 0x00
-#define TSL2561_INT_REG_INT_LEVEL 0x08
-#define TSL2561_INT_REG_INT_SMBUS 0x10
-#define TSL2561_INT_REG_INT_TEST 0x18
-
-#define TSL2561_ID_REGISTER 0x0A
-
-#define TSL2561_DATA_0_LOW 0x0C
-#define TSL2561_DATA_1_LOW 0x0E
-
-/* Control Register Values */
-#define TSL2561_CONT_REG_PWR_ON 0x03
-#define TSL2561_CONT_REG_PWR_OFF 0x00
-
-/**
- * struct tsl2561_state - device specific state
- * @indio_dev:		the industrialio I/O info structure
- * @client:		i2c client
- * @command_buf:	single command buffer used for all operations
- * @command_buf_lock:	ensure unique access to command_buf
- */
-struct tsl2561_state {
-	struct iio_dev		*indio_dev;
-	struct i2c_client	*client;
-	struct tsl2561_command	*command_buf;
-	struct mutex		command_buf_lock;
-};
-
-/**
- * struct tsl2561_command - command byte for smbus
- * @address:	register address
- * @block:	is this a block r/w
- * @word:	is this a word r/w
- * @clear:	set to 1 to clear pending interrupt
- * @cmd:	select the command register - always 1.
- */
-struct tsl2561_command {
-	unsigned int address:4;
-	unsigned int block:1;
-	unsigned int word:1;
-	unsigned int clear:1;
-	unsigned int cmd:1;
-};
-
-static inline void tsl2561_init_command_buf(struct tsl2561_command *buf)
-{
-	buf->address = 0;
-	buf->block = 0;
-	buf->word = 0;
-	buf->clear = 0;
-	buf->cmd = 1;
-}
-
-static ssize_t tsl2561_read_val(struct device *dev,
-				struct device_attribute *attr,
-				char *buf)
-{
-	int ret = 0, data;
-	ssize_t len = 0;
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2561_state *st = indio_dev->dev_data;
-
-	mutex_lock(&st->command_buf_lock);
-	st->command_buf->cmd = 1;
-	st->command_buf->word = 1;
-	st->command_buf->address = this_attr->address;
-
-	data = i2c_smbus_read_word_data(st->client, *(char *)(st->command_buf));
-	if (data < 0) {
-		ret = data;
-		goto error_ret;
-	}
-	len = sprintf(buf, "%u\n", data);
-
-error_ret:
-	mutex_unlock(&st->command_buf_lock);
-
-	return ret ? ret : len;
-}
-
-static IIO_DEV_ATTR_LIGHT_INFRARED(0, tsl2561_read_val, TSL2561_DATA_0_LOW);
-static IIO_DEV_ATTR_LIGHT_BROAD(0, tsl2561_read_val, TSL2561_DATA_1_LOW);
-
-static struct attribute *tsl2561_attributes[] = {
-	&iio_dev_attr_light_infrared0.dev_attr.attr,
-	&iio_dev_attr_light_broadspectrum0.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group tsl2561_attribute_group = {
-	.attrs = tsl2561_attributes,
-};
-
-static int tsl2561_initialize(struct tsl2561_state *st)
-{
-	int err;
-
-	mutex_lock(&st->command_buf_lock);
-	st->command_buf->word = 0;
-	st->command_buf->block = 0;
-	st->command_buf->address = TSL2561_CONTROL_REGISTER;
-	err = i2c_smbus_write_byte_data(st->client, *(char *)(st->command_buf),
-					TSL2561_CONT_REG_PWR_ON);
-	if (err)
-		goto error_ret;
-
-	st->command_buf->address = TSL2561_INT_CONTROL_REGISTER;
-	err = i2c_smbus_write_byte_data(st->client, *(char *)(st->command_buf),
-					TSL2561_INT_REG_INT_TEST);
-
-error_ret:
-	mutex_unlock(&st->command_buf_lock);
-
-	return err;
-}
-
-static int tsl2561_powerdown(struct i2c_client *client)
-{
-	int err;
-	struct tsl2561_command Command = {
-		.cmd =  1,
-		.clear = 0,
-		.word = 0,
-		.block = 0,
-		.address = TSL2561_CONTROL_REGISTER,
-	};
-
-	err = i2c_smbus_write_byte_data(client, *(char *)(&Command),
-					TSL2561_CONT_REG_PWR_OFF);
-	return (err < 0) ? err : 0;
-}
-static int __devinit tsl2561_probe(struct i2c_client *client,
-				   const struct i2c_device_id *id)
-{
-	int ret = 0, regdone = 0;
-	struct tsl2561_state *st = kzalloc(sizeof(*st), GFP_KERNEL);
-
-	if (st == NULL) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
-	i2c_set_clientdata(client, st);
-	st->client = client;
-	mutex_init(&st->command_buf_lock);
-
-	st->command_buf = kmalloc(sizeof(*st->command_buf), GFP_KERNEL);
-	if (st->command_buf == NULL) {
-		ret = -ENOMEM;
-		goto error_free_state;
-	}
-	tsl2561_init_command_buf(st->command_buf);
-
-	st->indio_dev = iio_allocate_device();
-	if (st->indio_dev == NULL) {
-		ret = -ENOMEM;
-		goto error_free_command_buf;
-	}
-	st->indio_dev->attrs = &tsl2561_attribute_group;
-	st->indio_dev->dev.parent = &client->dev;
-	st->indio_dev->dev_data = (void *)(st);
-	st->indio_dev->driver_module = THIS_MODULE;
-	st->indio_dev->modes = INDIO_DIRECT_MODE;
-	ret = iio_device_register(st->indio_dev);
-	if (ret)
-		goto error_free_iiodev;
-	regdone = 1;
-	/* Intialize the chip */
-	ret = tsl2561_initialize(st);
-	if (ret)
-		goto error_unregister_iiodev;
-
-	return 0;
-error_unregister_iiodev:
-error_free_iiodev:
-	if (regdone)
-		iio_device_unregister(st->indio_dev);
-	else
-		iio_free_device(st->indio_dev);
-error_free_command_buf:
-	kfree(st->command_buf);
-error_free_state:
-	kfree(st);
-error_ret:
-	return ret;
-
-}
-
-static int __devexit tsl2561_remove(struct i2c_client *client)
-{
-	struct tsl2561_state *st =  i2c_get_clientdata(client);
-
-	iio_device_unregister(st->indio_dev);
-	kfree(st);
-
-	return tsl2561_powerdown(client);
-}
-
-static const struct i2c_device_id tsl2561_id[] = {
-	{ "tsl2561", 0 },
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, tsl2561_id);
-
-
-static struct i2c_driver tsl2561_driver = {
-	.driver = {
-		.name = "tsl2561",
-	},
-	.probe = tsl2561_probe,
-	.remove = __devexit_p(tsl2561_remove),
-	.id_table  = tsl2561_id,
-};
-
-static __init int tsl2561_init(void)
-{
-	return i2c_add_driver(&tsl2561_driver);
-}
-module_init(tsl2561_init);
-
-static __exit void tsl2561_exit(void)
-{
-	i2c_del_driver(&tsl2561_driver);
-}
-module_exit(tsl2561_exit);
-
-MODULE_AUTHOR("Jonathan Cameron <jic23@cam.ac.uk>");
-MODULE_DESCRIPTION("TSL2561 light sensor driver");
-MODULE_LICENSE("GPL");