i2c/chips: Remove deprecated pcf8575 driver

The pcf8575 driver in drivers/i2c/chips which just exports its register to
sysfs is superseded by drivers/gpio/pcf857x.c which properly uses the gpiolib.
As this driver has been deprecated for more than a year, finally remove it.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Bart Van Assche <bart.vanassche@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 0 insertions, 198 deletions

diff --git a/drivers/i2c/chips/pcf8575.c b/drivers/i2c/chips/pcf8575.c
deleted file mode 100644
index 07fd7cb3c57d..000000000000
--- a/drivers/i2c/chips/pcf8575.c
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
-  pcf8575.c
-
-  About the PCF8575 chip: the PCF8575 is a 16-bit I/O expander for the I2C bus
-  produced by a.o. Philips Semiconductors.
-
-  Copyright (C) 2006 Michael Hennerich, Analog Devices Inc.
-  <hennerich@blackfin.uclinux.org>
-  Based on pcf8574.c.
-
-  Copyright (c) 2007 Bart Van Assche <bart.vanassche@gmail.com>.
-  Ported this driver from ucLinux to the mainstream Linux kernel.
-
-  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.
-*/
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/i2c.h>
-#include <linux/slab.h>  /* kzalloc() */
-#include <linux/sysfs.h> /* sysfs_create_group() */
-
-/* Addresses to scan: none, device can't be detected */
-static const unsigned short normal_i2c[] = { I2C_CLIENT_END };
-
-/* Insmod parameters */
-I2C_CLIENT_INSMOD;
-
-
-/* Each client has this additional data */
-struct pcf8575_data {
-        int write;              /* last written value, or error code */
-};
-
-/* following are the sysfs callback functions */
-static ssize_t show_read(struct device *dev, struct device_attribute *attr,
-                         char *buf)
-{
-        struct i2c_client *client = to_i2c_client(dev);
-        u16 val;
-        u8 iopin_state[2];
-
-        i2c_master_recv(client, iopin_state, 2);
-
-        val = iopin_state[0];
-        val |= iopin_state[1] << 8;
-
-        return sprintf(buf, "%u\n", val);
-}
-
-static DEVICE_ATTR(read, S_IRUGO, show_read, NULL);
-
-static ssize_t show_write(struct device *dev, struct device_attribute *attr,
-                          char *buf)
-{
-        struct pcf8575_data *data = dev_get_drvdata(dev);
-        if (data->write < 0)
-                return data->write;
-        return sprintf(buf, "%d\n", data->write);
-}
-
-static ssize_t set_write(struct device *dev, struct device_attribute *attr,
-                         const char *buf, size_t count)
-{
-        struct i2c_client *client = to_i2c_client(dev);
-        struct pcf8575_data *data = i2c_get_clientdata(client);
-        unsigned long val = simple_strtoul(buf, NULL, 10);
-        u8 iopin_state[2];
-
-        if (val > 0xffff)
-                return -EINVAL;
-
-        data->write = val;
-
-        iopin_state[0] = val & 0xFF;
-        iopin_state[1] = val >> 8;
-
-        i2c_master_send(client, iopin_state, 2);
-
-        return count;
-}
-
-static DEVICE_ATTR(write, S_IWUSR | S_IRUGO, show_write, set_write);
-
-static struct attribute *pcf8575_attributes[] = {
-        &dev_attr_read.attr,
-        &dev_attr_write.attr,
-        NULL
-};
-
-static const struct attribute_group pcf8575_attr_group = {
-        .attrs = pcf8575_attributes,
-};
-
-/*
- * Real code
- */
-
-/* Return 0 if detection is successful, -ENODEV otherwise */
-static int pcf8575_detect(struct i2c_client *client, int kind,
-                          struct i2c_board_info *info)
-{
-        struct i2c_adapter *adapter = client->adapter;
-
-        if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
-                return -ENODEV;
-
-        /* This is the place to detect whether the chip at the specified
-           address really is a PCF8575 chip. However, there is no method known
-           to detect whether an I2C chip is a PCF8575 or any other I2C chip. */
-
-        strlcpy(info->type, "pcf8575", I2C_NAME_SIZE);
-
-        return 0;
-}
-
-static int pcf8575_probe(struct i2c_client *client,
-                         const struct i2c_device_id *id)
-{
-        struct pcf8575_data *data;
-        int err;
-
-        data = kzalloc(sizeof(struct pcf8575_data), GFP_KERNEL);
-        if (!data) {
-                err = -ENOMEM;
-                goto exit;
-        }
-
-        i2c_set_clientdata(client, data);
-        data->write = -EAGAIN;
-
-        /* Register sysfs hooks */
-        err = sysfs_create_group(&client->dev.kobj, &pcf8575_attr_group);
-        if (err)
-                goto exit_free;
-
-        return 0;
-
-exit_free:
-        kfree(data);
-exit:
-        return err;
-}
-
-static int pcf8575_remove(struct i2c_client *client)
-{
-        sysfs_remove_group(&client->dev.kobj, &pcf8575_attr_group);
-        kfree(i2c_get_clientdata(client));
-        return 0;
-}
-
-static const struct i2c_device_id pcf8575_id[] = {
-        { "pcf8575", 0 },
-        { }
-};
-
-static struct i2c_driver pcf8575_driver = {
-        .driver = {
-                .owner  = THIS_MODULE,
-                .name   = "pcf8575",
-        },
-        .probe          = pcf8575_probe,
-        .remove         = pcf8575_remove,
-        .id_table       = pcf8575_id,
-
-        .detect         = pcf8575_detect,
-        .address_data   = &addr_data,
-};
-
-static int __init pcf8575_init(void)
-{
-        return i2c_add_driver(&pcf8575_driver);
-}
-
-static void __exit pcf8575_exit(void)
-{
-        i2c_del_driver(&pcf8575_driver);
-}
-
-MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>, "
-              "Bart Van Assche <bart.vanassche@gmail.com>");
-MODULE_DESCRIPTION("pcf8575 driver");
-MODULE_LICENSE("GPL");
-
-module_init(pcf8575_init);
-module_exit(pcf8575_exit);