Merge branch 'master'

5 files changed, 0 insertions, 1181 deletions

diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
index f9fae28f561..7aa5c38f085 100644
--- a/drivers/i2c/chips/Kconfig
+++ b/drivers/i2c/chips/Kconfig
@@ -65,15 +65,6 @@ config SENSORS_PCF8591
 	  This driver can also be built as a module.  If so, the module
 	  will be called pcf8591.
 
-config SENSORS_RTC8564
-	tristate "Epson 8564 RTC chip"
-	depends on I2C && EXPERIMENTAL
-	help
-	  If you say yes here you get support for the Epson 8564 RTC chip.
-
-	  This driver can also be built as a module.  If so, the module
-	  will be called i2c-rtc8564.
-
 config ISP1301_OMAP
 	tristate "Philips ISP1301 with OMAP OTG"
 	depends on I2C && ARCH_OMAP_OTG
@@ -126,13 +117,4 @@ config SENSORS_MAX6875
 	  This driver can also be built as a module.  If so, the module
 	  will be called max6875.
 
-config RTC_X1205_I2C
-	tristate "Xicor X1205 RTC chip"
-	depends on I2C && EXPERIMENTAL
-	help
-	  If you say yes here you get support for the Xicor X1205 RTC chip.
-
-	  This driver can also be built as a module. If so, the module
-	  will be called x1205.
-
 endmenu
diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
index 46178b57b1f..779868ef2e2 100644
--- a/drivers/i2c/chips/Makefile
+++ b/drivers/i2c/chips/Makefile
@@ -10,10 +10,8 @@ obj-$(CONFIG_SENSORS_M41T00)	+= m41t00.o
 obj-$(CONFIG_SENSORS_PCA9539)	+= pca9539.o
 obj-$(CONFIG_SENSORS_PCF8574)	+= pcf8574.o
 obj-$(CONFIG_SENSORS_PCF8591)	+= pcf8591.o
-obj-$(CONFIG_SENSORS_RTC8564)	+= rtc8564.o
 obj-$(CONFIG_ISP1301_OMAP)	+= isp1301_omap.o
 obj-$(CONFIG_TPS65010)		+= tps65010.o
-obj-$(CONFIG_RTC_X1205_I2C)	+= x1205.o
 
 ifeq ($(CONFIG_I2C_DEBUG_CHIP),y)
 EXTRA_CFLAGS += -DDEBUG
diff --git a/drivers/i2c/chips/rtc8564.c b/drivers/i2c/chips/rtc8564.c
deleted file mode 100644
index 0d8699b3f48..00000000000
--- a/drivers/i2c/chips/rtc8564.c
+++ /dev/null
@@ -1,385 +0,0 @@
-/*
- *  linux/drivers/i2c/chips/rtc8564.c
- *
- *  Copyright (C) 2002-2004 Stefan Eletzhofer
- *
- *	based on linux/drivers/acron/char/pcf8583.c
- *  Copyright (C) 2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Driver for system3's EPSON RTC 8564 chip
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/bcd.h>
-#include <linux/i2c.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/rtc.h>		/* get the user-level API */
-#include <linux/init.h>
-
-#include "rtc8564.h"
-
-#ifdef DEBUG
-# define _DBG(x, fmt, args...) do{ if (debug>=x) printk(KERN_DEBUG"%s: " fmt "\n", __FUNCTION__, ##args); } while(0);
-#else
-# define _DBG(x, fmt, args...) do { } while(0);
-#endif
-
-#define _DBGRTCTM(x, rtctm) if (debug>=x) printk("%s: secs=%d, mins=%d, hours=%d, mday=%d, " \
-			"mon=%d, year=%d, wday=%d VL=%d\n", __FUNCTION__, \
-			(rtctm).secs, (rtctm).mins, (rtctm).hours, (rtctm).mday, \
-			(rtctm).mon, (rtctm).year, (rtctm).wday, (rtctm).vl);
-
-struct rtc8564_data {
-	struct i2c_client client;
-	u16 ctrl;
-};
-
-static inline u8 _rtc8564_ctrl1(struct i2c_client *client)
-{
-	struct rtc8564_data *data = i2c_get_clientdata(client);
-	return data->ctrl & 0xff;
-}
-static inline u8 _rtc8564_ctrl2(struct i2c_client *client)
-{
-	struct rtc8564_data *data = i2c_get_clientdata(client);
-	return (data->ctrl & 0xff00) >> 8;
-}
-
-#define CTRL1(c) _rtc8564_ctrl1(c)
-#define CTRL2(c) _rtc8564_ctrl2(c)
-
-static int debug;
-module_param(debug, int, S_IRUGO | S_IWUSR);
-
-static struct i2c_driver rtc8564_driver;
-
-static unsigned short ignore[] = { I2C_CLIENT_END };
-static unsigned short normal_addr[] = { 0x51, I2C_CLIENT_END };
-
-static struct i2c_client_address_data addr_data = {
-	.normal_i2c		= normal_addr,
-	.probe			= ignore,
-	.ignore			= ignore,
-};
-
-static int rtc8564_read_mem(struct i2c_client *client, struct mem *mem);
-static int rtc8564_write_mem(struct i2c_client *client, struct mem *mem);
-
-static int rtc8564_read(struct i2c_client *client, unsigned char adr,
-			unsigned char *buf, unsigned char len)
-{
-	int ret = -EIO;
-	unsigned char addr[1] = { adr };
-	struct i2c_msg msgs[2] = {
-		{client->addr, 0, 1, addr},
-		{client->addr, I2C_M_RD, len, buf}
-	};
-
-	_DBG(1, "client=%p, adr=%d, buf=%p, len=%d", client, adr, buf, len);
-
-	if (!buf) {
-		ret = -EINVAL;
-		goto done;
-	}
-
-	ret = i2c_transfer(client->adapter, msgs, 2);
-	if (ret == 2) {
-		ret = 0;
-	}
-
-done:
-	return ret;
-}
-
-static int rtc8564_write(struct i2c_client *client, unsigned char adr,
-			 unsigned char *data, unsigned char len)
-{
-	int ret = 0;
-	unsigned char _data[16];
-	struct i2c_msg wr;
-	int i;
-
-	if (!data || len > 15) {
-		ret = -EINVAL;
-		goto done;
-	}
-
-	_DBG(1, "client=%p, adr=%d, buf=%p, len=%d", client, adr, data, len);
-
-	_data[0] = adr;
-	for (i = 0; i < len; i++) {
-		_data[i + 1] = data[i];
-		_DBG(5, "data[%d] = 0x%02x (%d)", i, data[i], data[i]);
-	}
-
-	wr.addr = client->addr;
-	wr.flags = 0;
-	wr.len = len + 1;
-	wr.buf = _data;
-
-	ret = i2c_transfer(client->adapter, &wr, 1);
-	if (ret == 1) {
-		ret = 0;
-	}
-
-done:
-	return ret;
-}
-
-static int rtc8564_attach(struct i2c_adapter *adap, int addr, int kind)
-{
-	int ret;
-	struct i2c_client *new_client;
-	struct rtc8564_data *d;
-	unsigned char data[10];
-	unsigned char ad[1] = { 0 };
-	struct i2c_msg ctrl_wr[1] = {
-		{addr, 0, 2, data}
-	};
-	struct i2c_msg ctrl_rd[2] = {
-		{addr, 0, 1, ad},
-		{addr, I2C_M_RD, 2, data}
-	};
-
-	d = kzalloc(sizeof(struct rtc8564_data), GFP_KERNEL);
-	if (!d) {
-		ret = -ENOMEM;
-		goto done;
-	}
-	new_client = &d->client;
-
-	strlcpy(new_client->name, "RTC8564", I2C_NAME_SIZE);
-	i2c_set_clientdata(new_client, d);
-	new_client->addr = addr;
-	new_client->adapter = adap;
-	new_client->driver = &rtc8564_driver;
-
-	_DBG(1, "client=%p", new_client);
-
-	/* init ctrl1 reg */
-	data[0] = 0;
-	data[1] = 0;
-	ret = i2c_transfer(new_client->adapter, ctrl_wr, 1);
-	if (ret != 1) {
-		printk(KERN_INFO "rtc8564: cant init ctrl1\n");
-		ret = -ENODEV;
-		goto done;
-	}
-
-	/* read back ctrl1 and ctrl2 */
-	ret = i2c_transfer(new_client->adapter, ctrl_rd, 2);
-	if (ret != 2) {
-		printk(KERN_INFO "rtc8564: cant read ctrl\n");
-		ret = -ENODEV;
-		goto done;
-	}
-
-	d->ctrl = data[0] | (data[1] << 8);
-
-	_DBG(1, "RTC8564_REG_CTRL1=%02x, RTC8564_REG_CTRL2=%02x",
-	     data[0], data[1]);
-
-	ret = i2c_attach_client(new_client);
-done:
-	if (ret) {
-		kfree(d);
-	}
-	return ret;
-}
-
-static int rtc8564_probe(struct i2c_adapter *adap)
-{
-	return i2c_probe(adap, &addr_data, rtc8564_attach);
-}
-
-static int rtc8564_detach(struct i2c_client *client)
-{
-	i2c_detach_client(client);
-	kfree(i2c_get_clientdata(client));
-	return 0;
-}
-
-static int rtc8564_get_datetime(struct i2c_client *client, struct rtc_tm *dt)
-{
-	int ret = -EIO;
-	unsigned char buf[15];
-
-	_DBG(1, "client=%p, dt=%p", client, dt);
-
-	if (!dt)
-		return -EINVAL;
-
-	memset(buf, 0, sizeof(buf));
-
-	ret = rtc8564_read(client, 0, buf, 15);
-	if (ret)
-		return ret;
-
-	/* century stored in minute alarm reg */
-	dt->year = BCD2BIN(buf[RTC8564_REG_YEAR]);
-	dt->year += 100 * BCD2BIN(buf[RTC8564_REG_AL_MIN] & 0x3f);
-	dt->mday = BCD2BIN(buf[RTC8564_REG_DAY] & 0x3f);
-	dt->wday = BCD2BIN(buf[RTC8564_REG_WDAY] & 7);
-	dt->mon = BCD2BIN(buf[RTC8564_REG_MON_CENT] & 0x1f);
-
-	dt->secs = BCD2BIN(buf[RTC8564_REG_SEC] & 0x7f);
-	dt->vl = (buf[RTC8564_REG_SEC] & 0x80) == 0x80;
-	dt->mins = BCD2BIN(buf[RTC8564_REG_MIN] & 0x7f);
-	dt->hours = BCD2BIN(buf[RTC8564_REG_HR] & 0x3f);
-
-	_DBGRTCTM(2, *dt);
-
-	return 0;
-}
-
-static int
-rtc8564_set_datetime(struct i2c_client *client, struct rtc_tm *dt, int datetoo)
-{
-	int ret, len = 5;
-	unsigned char buf[15];
-
-	_DBG(1, "client=%p, dt=%p", client, dt);
-
-	if (!dt)
-		return -EINVAL;
-
-	_DBGRTCTM(2, *dt);
-
-	buf[RTC8564_REG_CTRL1] = CTRL1(client) | RTC8564_CTRL1_STOP;
-	buf[RTC8564_REG_CTRL2] = CTRL2(client);
-	buf[RTC8564_REG_SEC] = BIN2BCD(dt->secs);
-	buf[RTC8564_REG_MIN] = BIN2BCD(dt->mins);
-	buf[RTC8564_REG_HR] = BIN2BCD(dt->hours);
-
-	if (datetoo) {
-		len += 5;
-		buf[RTC8564_REG_DAY] = BIN2BCD(dt->mday);
-		buf[RTC8564_REG_WDAY] = BIN2BCD(dt->wday);
-		buf[RTC8564_REG_MON_CENT] = BIN2BCD(dt->mon) & 0x1f;
-		/* century stored in minute alarm reg */
-		buf[RTC8564_REG_YEAR] = BIN2BCD(dt->year % 100);
-		buf[RTC8564_REG_AL_MIN] = BIN2BCD(dt->year / 100);
-	}
-
-	ret = rtc8564_write(client, 0, buf, len);
-	if (ret) {
-		_DBG(1, "error writing data! %d", ret);
-	}
-
-	buf[RTC8564_REG_CTRL1] = CTRL1(client);
-	ret = rtc8564_write(client, 0, buf, 1);
-	if (ret) {
-		_DBG(1, "error writing data! %d", ret);
-	}
-
-	return ret;
-}
-
-static int rtc8564_get_ctrl(struct i2c_client *client, unsigned int *ctrl)
-{
-	struct rtc8564_data *data = i2c_get_clientdata(client);
-
-	if (!ctrl)
-		return -1;
-
-	*ctrl = data->ctrl;
-	return 0;
-}
-
-static int rtc8564_set_ctrl(struct i2c_client *client, unsigned int *ctrl)
-{
-	struct rtc8564_data *data = i2c_get_clientdata(client);
-	unsigned char buf[2];
-
-	if (!ctrl)
-		return -1;
-
-	buf[0] = *ctrl & 0xff;
-	buf[1] = (*ctrl & 0xff00) >> 8;
-	data->ctrl = *ctrl;
-
-	return rtc8564_write(client, 0, buf, 2);
-}
-
-static int rtc8564_read_mem(struct i2c_client *client, struct mem *mem)
-{
-
-	if (!mem)
-		return -EINVAL;
-
-	return rtc8564_read(client, mem->loc, mem->data, mem->nr);
-}
-
-static int rtc8564_write_mem(struct i2c_client *client, struct mem *mem)
-{
-
-	if (!mem)
-		return -EINVAL;
-
-	return rtc8564_write(client, mem->loc, mem->data, mem->nr);
-}
-
-static int
-rtc8564_command(struct i2c_client *client, unsigned int cmd, void *arg)
-{
-
-	_DBG(1, "cmd=%d", cmd);
-
-	switch (cmd) {
-	case RTC_GETDATETIME:
-		return rtc8564_get_datetime(client, arg);
-
-	case RTC_SETTIME:
-		return rtc8564_set_datetime(client, arg, 0);
-
-	case RTC_SETDATETIME:
-		return rtc8564_set_datetime(client, arg, 1);
-
-	case RTC_GETCTRL:
-		return rtc8564_get_ctrl(client, arg);
-
-	case RTC_SETCTRL:
-		return rtc8564_set_ctrl(client, arg);
-
-	case MEM_READ:
-		return rtc8564_read_mem(client, arg);
-
-	case MEM_WRITE:
-		return rtc8564_write_mem(client, arg);
-
-	default:
-		return -EINVAL;
-	}
-}
-
-static struct i2c_driver rtc8564_driver = {
-	.driver = {
-		.name	= "RTC8564",
-	},
-	.id		= I2C_DRIVERID_RTC8564,
-	.attach_adapter = rtc8564_probe,
-	.detach_client	= rtc8564_detach,
-	.command	= rtc8564_command
-};
-
-static __init int rtc8564_init(void)
-{
-	return i2c_add_driver(&rtc8564_driver);
-}
-
-static __exit void rtc8564_exit(void)
-{
-	i2c_del_driver(&rtc8564_driver);
-}
-
-MODULE_AUTHOR("Stefan Eletzhofer <Stefan.Eletzhofer@eletztrick.de>");
-MODULE_DESCRIPTION("EPSON RTC8564 Driver");
-MODULE_LICENSE("GPL");
-
-module_init(rtc8564_init);
-module_exit(rtc8564_exit);
diff --git a/drivers/i2c/chips/rtc8564.h b/drivers/i2c/chips/rtc8564.h
deleted file mode 100644
index e5342d10b8f..00000000000
--- a/drivers/i2c/chips/rtc8564.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- *  linux/drivers/i2c/chips/rtc8564.h
- *
- *  Copyright (C) 2002-2004 Stefan Eletzhofer
- *
- *	based on linux/drivers/acron/char/pcf8583.h
- *  Copyright (C) 2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-struct rtc_tm {
-	unsigned char	secs;
-	unsigned char	mins;
-	unsigned char	hours;
-	unsigned char	mday;
-	unsigned char	mon;
-	unsigned short	year; /* xxxx 4 digits :) */
-	unsigned char	wday;
-	unsigned char	vl;
-};
-
-struct mem {
-	unsigned int	loc;
-	unsigned int	nr;
-	unsigned char	*data;
-};
-
-#define RTC_GETDATETIME	0
-#define RTC_SETTIME	1
-#define RTC_SETDATETIME	2
-#define RTC_GETCTRL	3
-#define RTC_SETCTRL	4
-#define MEM_READ	5
-#define MEM_WRITE	6
-
-#define RTC8564_REG_CTRL1		0x0 /* T  0 S 0 | T 0 0 0 */
-#define RTC8564_REG_CTRL2		0x1 /* 0  0 0 TI/TP | AF TF AIE TIE */
-#define RTC8564_REG_SEC			0x2 /* VL 4 2 1 | 8 4 2 1 */
-#define RTC8564_REG_MIN			0x3 /* x  4 2 1 | 8 4 2 1 */
-#define RTC8564_REG_HR			0x4 /* x  x 2 1 | 8 4 2 1 */
-#define RTC8564_REG_DAY			0x5 /* x  x 2 1 | 8 4 2 1 */
-#define RTC8564_REG_WDAY		0x6 /* x  x x x | x 4 2 1 */
-#define RTC8564_REG_MON_CENT	0x7 /* C  x x 1 | 8 4 2 1 */
-#define RTC8564_REG_YEAR		0x8 /* 8  4 2 1 | 8 4 2 1 */
-#define RTC8564_REG_AL_MIN		0x9 /* AE 4 2 1 | 8 4 2 1 */
-#define RTC8564_REG_AL_HR		0xa /* AE 4 2 1 | 8 4 2 1 */
-#define RTC8564_REG_AL_DAY		0xb /* AE x 2 1 | 8 4 2 1 */
-#define RTC8564_REG_AL_WDAY		0xc /* AE x x x | x 4 2 1 */
-#define RTC8564_REG_CLKOUT		0xd /* FE x x x | x x FD1 FD0 */
-#define RTC8564_REG_TCTL		0xe /* TE x x x | x x FD1 FD0 */
-#define RTC8564_REG_TIMER		0xf /* 8 bit binary */
-
-/* Control reg */
-#define RTC8564_CTRL1_TEST1		(1<<3)
-#define RTC8564_CTRL1_STOP		(1<<5)
-#define RTC8564_CTRL1_TEST2		(1<<7)
-
-#define RTC8564_CTRL2_TIE		(1<<0)
-#define RTC8564_CTRL2_AIE		(1<<1)
-#define RTC8564_CTRL2_TF		(1<<2)
-#define RTC8564_CTRL2_AF		(1<<3)
-#define RTC8564_CTRL2_TI_TP		(1<<4)
-
-/* CLKOUT frequencies */
-#define RTC8564_FD_32768HZ		(0x0)
-#define RTC8564_FD_1024HZ		(0x1)
-#define RTC8564_FD_32			(0x2)
-#define RTC8564_FD_1HZ			(0x3)
-
-/* Timer CTRL */
-#define RTC8564_TD_4096HZ		(0x0)
-#define RTC8564_TD_64HZ			(0x1)
-#define RTC8564_TD_1HZ			(0x2)
-#define RTC8564_TD_1_60HZ		(0x3)
-
-#define I2C_DRIVERID_RTC8564 0xf000
diff --git a/drivers/i2c/chips/x1205.c b/drivers/i2c/chips/x1205.c
deleted file mode 100644
index 245fffa92db..00000000000
--- a/drivers/i2c/chips/x1205.c
+++ /dev/null
@@ -1,698 +0,0 @@
-/*
- *  x1205.c - An i2c driver for the Xicor X1205 RTC
- *  Copyright 2004 Karen Spearel
- *  Copyright 2005 Alessandro Zummo
- *
- *  please send all reports to:
- *	kas11 at tampabay dot rr dot com
- *      a dot zummo at towertech dot it
- *
- *  based on the other drivers in this same directory.
- *
- *  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.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include <linux/string.h>
-#include <linux/bcd.h>
-#include <linux/rtc.h>
-#include <linux/list.h>
-
-#include <linux/x1205.h>
-
-#define DRV_VERSION "0.9.9"
-
-/* Addresses to scan: none. This chip is located at
- * 0x6f and uses a two bytes register addressing.
- * Two bytes need to be written to read a single register,
- * while most other chips just require one and take the second
- * one as the data to be written. To prevent corrupting
- * unknown chips, the user must explicitely set the probe parameter.
- */
-
-static unsigned short normal_i2c[] = { I2C_CLIENT_END };
-
-/* Insmod parameters */
-I2C_CLIENT_INSMOD;
-I2C_CLIENT_MODULE_PARM(hctosys,
-	"Set the system time from the hardware clock upon initialization");
-
-/* offsets into CCR area */
-
-#define CCR_SEC			0
-#define CCR_MIN			1
-#define CCR_HOUR		2
-#define CCR_MDAY		3
-#define CCR_MONTH		4
-#define CCR_YEAR		5
-#define CCR_WDAY		6
-#define CCR_Y2K			7
-
-#define X1205_REG_SR		0x3F	/* status register */
-#define X1205_REG_Y2K		0x37
-#define X1205_REG_DW		0x36
-#define X1205_REG_YR		0x35
-#define X1205_REG_MO		0x34
-#define X1205_REG_DT		0x33
-#define X1205_REG_HR		0x32
-#define X1205_REG_MN		0x31
-#define X1205_REG_SC		0x30
-#define X1205_REG_DTR		0x13
-#define X1205_REG_ATR		0x12
-#define X1205_REG_INT		0x11
-#define X1205_REG_0		0x10
-#define X1205_REG_Y2K1		0x0F
-#define X1205_REG_DWA1		0x0E
-#define X1205_REG_YRA1		0x0D
-#define X1205_REG_MOA1		0x0C
-#define X1205_REG_DTA1		0x0B
-#define X1205_REG_HRA1		0x0A
-#define X1205_REG_MNA1		0x09
-#define X1205_REG_SCA1		0x08
-#define X1205_REG_Y2K0		0x07
-#define X1205_REG_DWA0		0x06
-#define X1205_REG_YRA0		0x05
-#define X1205_REG_MOA0		0x04
-#define X1205_REG_DTA0		0x03
-#define X1205_REG_HRA0		0x02
-#define X1205_REG_MNA0		0x01
-#define X1205_REG_SCA0		0x00
-
-#define X1205_CCR_BASE		0x30	/* Base address of CCR */
-#define X1205_ALM0_BASE		0x00	/* Base address of ALARM0 */
-
-#define X1205_SR_RTCF		0x01	/* Clock failure */
-#define X1205_SR_WEL		0x02	/* Write Enable Latch */
-#define X1205_SR_RWEL		0x04	/* Register Write Enable */
-
-#define X1205_DTR_DTR0		0x01
-#define X1205_DTR_DTR1		0x02
-#define X1205_DTR_DTR2		0x04
-
-#define X1205_HR_MIL		0x80	/* Set in ccr.hour for 24 hr mode */
-
-/* Prototypes */
-static int x1205_attach(struct i2c_adapter *adapter);
-static int x1205_detach(struct i2c_client *client);
-static int x1205_probe(struct i2c_adapter *adapter, int address, int kind);
-static int x1205_command(struct i2c_client *client, unsigned int cmd,
-	void *arg);
-
-static struct i2c_driver x1205_driver = {
-	.driver = {
-		.name	= "x1205",
-	},
-	.attach_adapter = &x1205_attach,
-	.detach_client	= &x1205_detach,
-};
-
-struct x1205_data {
-	struct i2c_client client;
-	struct list_head list;
-	unsigned int epoch;
-};
-
-static const unsigned char days_in_mo[] =
-	{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
-
-static LIST_HEAD(x1205_clients);
-
-/* Workaround until the I2C subsytem will allow to send
- * commands to a specific client. This function will send the command
- * to the first client.
- */
-int x1205_do_command(unsigned int cmd, void *arg)
-{
-	struct list_head *walk;
-	struct list_head *tmp;
-	struct x1205_data *data;
-
-	list_for_each_safe(walk, tmp, &x1205_clients) {
-		data = list_entry(walk, struct x1205_data, list);
-		return x1205_command(&data->client, cmd, arg);
-	}
-
-	return -ENODEV;
-}
-
-#define is_leap(year) \
-	((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
-
-/* make sure the rtc_time values are in bounds */
-static int x1205_validate_tm(struct rtc_time *tm)
-{
-	int year = tm->tm_year + 1900;
-
-	if ((tm->tm_year < 70) || (tm->tm_year > 255))
-		return -EINVAL;
-
-	if ((tm->tm_mon > 11) || (tm->tm_mday == 0))
-		return -EINVAL;
-
-	if (tm->tm_mday > days_in_mo[tm->tm_mon]
-		+ ((tm->tm_mon == 1) && is_leap(year)))
-		return -EINVAL;
-
-	if ((tm->tm_hour >= 24) || (tm->tm_min >= 60) || (tm->tm_sec >= 60))
-		return -EINVAL;
-
-	return 0;
-}
-
-/*
- * In the routines that deal directly with the x1205 hardware, we use
- * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch
- * Epoch is initialized as 2000. Time is set to UTC.
- */
-static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm,
-				u8 reg_base)
-{
-	unsigned char dt_addr[2] = { 0, reg_base };
-	static unsigned char sr_addr[2] = { 0, X1205_REG_SR };
-
-	unsigned char buf[8], sr;
-
-	struct i2c_msg msgs[] = {
-		{ client->addr, 0, 2, sr_addr },	/* setup read ptr */
-		{ client->addr, I2C_M_RD, 1, &sr }, 	/* read status */
-		{ client->addr, 0, 2, dt_addr },	/* setup read ptr */
-		{ client->addr, I2C_M_RD, 8, buf },	/* read date */
-	};
-
-	struct x1205_data *data = i2c_get_clientdata(client);
-
-	/* read status register */
-	if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
-		dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
-		return -EIO;
-	}
-
-	/* check for battery failure */
-	if (sr & X1205_SR_RTCF) {
-		dev_warn(&client->dev,
-			"Clock had a power failure, you must set the date.\n");
-		return -EINVAL;
-	}
-
-	/* read date registers */
-	if ((i2c_transfer(client->adapter, &msgs[2], 2)) != 2) {
-		dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
-		return -EIO;
-	}
-
-	dev_dbg(&client->dev,
-		"%s: raw read data - sec=%02x, min=%02x, hr=%02x, "
-		"mday=%02x, mon=%02x, year=%02x, wday=%02x, y2k=%02x\n",
-		__FUNCTION__,
-		buf[0], buf[1], buf[2], buf[3],
-		buf[4], buf[5], buf[6], buf[7]);
-
-	tm->tm_sec = BCD2BIN(buf[CCR_SEC]);
-	tm->tm_min = BCD2BIN(buf[CCR_MIN]);
-	tm->tm_hour = BCD2BIN(buf[CCR_HOUR] & 0x3F); /* hr is 0-23 */
-	tm->tm_mday = BCD2BIN(buf[CCR_MDAY]);
-	tm->tm_mon = BCD2BIN(buf[CCR_MONTH]);
-	data->epoch = BCD2BIN(buf[CCR_Y2K]) * 100;
-	tm->tm_year = BCD2BIN(buf[CCR_YEAR]) + data->epoch - 1900;
-	tm->tm_wday = buf[CCR_WDAY];
-
-	dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
-		"mday=%d, mon=%d, year=%d, wday=%d\n",
-		__FUNCTION__,
-		tm->tm_sec, tm->tm_min, tm->tm_hour,
-		tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
-
-	return 0;
-}
-
-static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
-				int datetoo, u8 reg_base)
-{
-	int i, err, xfer;
-
-	unsigned char buf[8];
-
-	static const unsigned char wel[3] = { 0, X1205_REG_SR,
-						X1205_SR_WEL };
-
-	static const unsigned char rwel[3] = { 0, X1205_REG_SR,
-						X1205_SR_WEL | X1205_SR_RWEL };
-
-	static const unsigned char diswe[3] = { 0, X1205_REG_SR, 0 };
-
-	struct x1205_data *data = i2c_get_clientdata(client);
-
-	/* check if all values in the tm struct are correct */
-	if ((err = x1205_validate_tm(tm)) < 0)
-		return err;
-
-	dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
-		"mday=%d, mon=%d, year=%d, wday=%d\n",
-		__FUNCTION__,
-		tm->tm_sec, tm->tm_min, tm->tm_hour,
-		tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
-
-	buf[CCR_SEC] = BIN2BCD(tm->tm_sec);
-	buf[CCR_MIN] = BIN2BCD(tm->tm_min);
-
-	/* set hour and 24hr bit */
-	buf[CCR_HOUR] = BIN2BCD(tm->tm_hour) | X1205_HR_MIL;
-
-	/* should we also set the date? */
-	if (datetoo) {
-		buf[CCR_MDAY] = BIN2BCD(tm->tm_mday);
-
-		/* month, 0 - 11 */
-		buf[CCR_MONTH] = BIN2BCD(tm->tm_mon);
-
-		/* year, since 1900 */
-		buf[CCR_YEAR] = BIN2BCD(tm->tm_year + 1900 - data->epoch);
-		buf[CCR_WDAY] = tm->tm_wday & 0x07;
-		buf[CCR_Y2K] = BIN2BCD(data->epoch / 100);
-	}
-
-	/* this sequence is required to unlock the chip */
-	xfer = i2c_master_send(client, wel, 3);
-	if (xfer != 3) {
-		dev_err(&client->dev, "%s: wel - %d\n", __FUNCTION__, xfer);
-		return -EIO;
-	}
-
-	xfer = i2c_master_send(client, rwel, 3);
-	if (xfer != 3) {
-		dev_err(&client->dev, "%s: rwel - %d\n", __FUNCTION__, xfer);
-		return -EIO;
-	}
-
-	/* write register's data */
-	for (i = 0; i < (datetoo ? 8 : 3); i++) {
-		unsigned char rdata[3] = { 0, reg_base + i, buf[i] };
-
-		xfer = i2c_master_send(client, rdata, 3);
-		if (xfer != 3) {
-			dev_err(&client->dev,
-				"%s: xfer=%d addr=%02x, data=%02x\n",
-				__FUNCTION__,
-				 xfer, rdata[1], rdata[2]);
-			return -EIO;
-		}
-	};
-
-	/* disable further writes */
-	xfer = i2c_master_send(client, diswe, 3);
-	if (xfer != 3) {
-		dev_err(&client->dev, "%s: diswe - %d\n", __FUNCTION__, xfer);
-		return -EIO;
-	}
-
-	return 0;
-}
-
-static int x1205_get_dtrim(struct i2c_client *client, int *trim)
-{
-	unsigned char dtr;
-	static unsigned char dtr_addr[2] = { 0, X1205_REG_DTR };
-
-	struct i2c_msg msgs[] = {
-		{ client->addr, 0, 2, dtr_addr },	/* setup read ptr */
-		{ client->addr, I2C_M_RD, 1, &dtr }, 	/* read dtr */
-	};
-
-	/* read dtr register */
-	if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
-		dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
-		return -EIO;
-	}
-
-	dev_dbg(&client->dev, "%s: raw dtr=%x\n", __FUNCTION__, dtr);
-
-	*trim = 0;
-
-	if (dtr & X1205_DTR_DTR0)
-		*trim += 20;
-
-	if (dtr & X1205_DTR_DTR1)
-		*trim += 10;
-
-	if (dtr & X1205_DTR_DTR2)
-		*trim = -*trim;
-
-	return 0;
-}
-
-static int x1205_get_atrim(struct i2c_client *client, int *trim)
-{
-	s8 atr;
-	static unsigned char atr_addr[2] = { 0, X1205_REG_ATR };
-
-	struct i2c_msg msgs[] = {
-		{ client->addr, 0, 2, atr_addr },	/* setup read ptr */
-		{ client->addr, I2C_M_RD, 1, &atr }, 	/* read atr */
-	};
-
-	/* read atr register */
-	if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
-		dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
-		return -EIO;
-	}
-
-	dev_dbg(&client->dev, "%s: raw atr=%x\n", __FUNCTION__, atr);
-
-	/* atr is a two's complement value on 6 bits,
-	 * perform sign extension. The formula is
-	 * Catr = (atr * 0.25pF) + 11.00pF.
-	 */
-	if (atr & 0x20)
-		atr |= 0xC0;
-
-	dev_dbg(&client->dev, "%s: raw atr=%x (%d)\n", __FUNCTION__, atr, atr);
-
-	*trim = (atr * 250) + 11000;
-
-	dev_dbg(&client->dev, "%s: real=%d\n", __FUNCTION__, *trim);
-
-	return 0;
-}
-
-static int x1205_hctosys(struct i2c_client *client)
-{
-	int err;
-
-	struct rtc_time tm;
-	struct timespec tv;
-
-	err = x1205_command(client, X1205_CMD_GETDATETIME, &tm);
-
-	if (err) {
-		dev_err(&client->dev,
-			"Unable to set the system clock\n");
-		return err;
-	}
-
-	/* IMPORTANT: the RTC only stores whole seconds. It is arbitrary
-	 * whether it stores the most close value or the value with partial
-	 * seconds truncated. However, it is important that we use it to store
-	 * the truncated value. This is because otherwise it is necessary,
-	 * in an rtc sync function, to read both xtime.tv_sec and
-	 * xtime.tv_nsec. On some processors (i.e. ARM), an atomic read
-	 * of >32bits is not possible. So storing the most close value would
-	 * slow down the sync API. So here we have the truncated value and
-	 * the best guess is to add 0.5s.
-	 */
-
-	tv.tv_nsec = NSEC_PER_SEC >> 1;
-
-	/* WARNING: this is not the C library 'mktime' call, it is a built in
-	 * inline function from include/linux/time.h.  It expects (requires)
-	 * the month to be in the range 1-12
-	 */
-
-	tv.tv_sec  = mktime(tm.tm_year + 1900, tm.tm_mon + 1,
-				tm.tm_mday, tm.tm_hour,
-				tm.tm_min, tm.tm_sec);
-
-	do_settimeofday(&tv);
-
-	dev_info(&client->dev,
-		"setting the system clock to %d-%d-%d %d:%d:%d\n",
-		tm.tm_year + 1900, tm.tm_mon + 1,
-		tm.tm_mday, tm.tm_hour, tm.tm_min,
-		tm.tm_sec);
-
-	return 0;
-}
-
-struct x1205_limit
-{
-	unsigned char reg;
-	unsigned char mask;
-	unsigned char min;
-	unsigned char max;
-};
-
-static int x1205_validate_client(struct i2c_client *client)
-{
-	int i, xfer;
-
-	/* Probe array. We will read the register at the specified
-	 * address and check if the given bits are zero.
-	 */
-	static const unsigned char probe_zero_pattern[] = {
-		/* register, mask */
-		X1205_REG_SR,	0x18,
-		X1205_REG_DTR,	0xF8,
-		X1205_REG_ATR,	0xC0,
-		X1205_REG_INT,	0x18,
-		X1205_REG_0,	0xFF,
-	};
-
-	static const struct x1205_limit probe_limits_pattern[] = {
-		/* register, mask, min, max */
-		{ X1205_REG_Y2K,	0xFF,	19,	20	},
-		{ X1205_REG_DW,		0xFF,	0,	6	},
-		{ X1205_REG_YR,		0xFF,	0,	99	},
-		{ X1205_REG_MO,		0xFF,	0,	12	},
-		{ X1205_REG_DT,		0xFF,	0,	31	},
-		{ X1205_REG_HR,		0x7F,	0,	23	},
-		{ X1205_REG_MN,		0xFF,	0,	59	},
-		{ X1205_REG_SC,		0xFF,	0,	59	},
-		{ X1205_REG_Y2K1,	0xFF,	19,	20	},
-		{ X1205_REG_Y2K0,	0xFF,	19,	20	},
-	};
-
-	/* check that registers have bits a 0 where expected */
-	for (i = 0; i < ARRAY_SIZE(probe_zero_pattern); i += 2) {
-		unsigned char buf;
-
-		unsigned char addr[2] = { 0, probe_zero_pattern[i] };
-
-		struct i2c_msg msgs[2] = {
-			{ client->addr, 0, 2, addr },
-			{ client->addr, I2C_M_RD, 1, &buf },
-		};
-
-		xfer = i2c_transfer(client->adapter, msgs, 2);
-		if (xfer != 2) {
-			dev_err(&client->adapter->dev,
-				"%s: could not read register %x\n",
-				__FUNCTION__, addr[1]);
-
-			return -EIO;
-		}
-
-		if ((buf & probe_zero_pattern[i+1]) != 0) {
-			dev_err(&client->adapter->dev,
-				"%s: register=%02x, zero pattern=%d, value=%x\n",
-				__FUNCTION__, addr[1], i, buf);
-
-			return -ENODEV;
-		}
-	}
-
-	/* check limits (only registers with bcd values) */
-	for (i = 0; i < ARRAY_SIZE(probe_limits_pattern); i++) {
-		unsigned char reg, value;
-
-		unsigned char addr[2] = { 0, probe_limits_pattern[i].reg };
-
-		struct i2c_msg msgs[2] = {
-			{ client->addr, 0, 2, addr },
-			{ client->addr, I2C_M_RD, 1, &reg },
-		};
-
-		xfer = i2c_transfer(client->adapter, msgs, 2);
-
-		if (xfer != 2) {
-			dev_err(&client->adapter->dev,
-				"%s: could not read register %x\n",
-				__FUNCTION__, addr[1]);
-
-			return -EIO;
-		}
-
-		value = BCD2BIN(reg & probe_limits_pattern[i].mask);
-
-		if (value > probe_limits_pattern[i].max ||
-			value < probe_limits_pattern[i].min) {
-			dev_dbg(&client->adapter->dev,
-				"%s: register=%x, lim pattern=%d, value=%d\n",
-				__FUNCTION__, addr[1], i, value);
-
-			return -ENODEV;
-		}
-	}
-
-	return 0;
-}
-
-static int x1205_attach(struct i2c_adapter *adapter)
-{
-	dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
-
-	return i2c_probe(adapter, &addr_data, x1205_probe);
-}
-
-int x1205_direct_attach(int adapter_id,
-	struct i2c_client_address_data *address_data)
-{
-	int err;
-	struct i2c_adapter *adapter = i2c_get_adapter(adapter_id);
-
-	if (adapter) {
-		err = i2c_probe(adapter,
-			address_data, x1205_probe);
-
-		i2c_put_adapter(adapter);
-
-		return err;
-	}
-
-	return -ENODEV;
-}
-
-static int x1205_probe(struct i2c_adapter *adapter, int address, int kind)
-{
-	struct i2c_client *client;
-	struct x1205_data *data;
-
-	int err = 0;
-
-	dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
-
-	if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
-		err = -ENODEV;
-		goto exit;
-	}
-
-	if (!(data = kzalloc(sizeof(struct x1205_data), GFP_KERNEL))) {
-		err = -ENOMEM;
-		goto exit;
-	}
-
-	/* Initialize our structures */
-	data->epoch = 2000;
-
-	client = &data->client;
-	client->addr = address;
-	client->driver = &x1205_driver;
-	client->adapter	= adapter;
-
-	strlcpy(client->name, "x1205", I2C_NAME_SIZE);
-
-	i2c_set_clientdata(client, data);
-
-	/* Verify the chip is really an X1205 */
-	if (kind < 0) {
-		if (x1205_validate_client(client) < 0) {
-			err = -ENODEV;
-			goto exit_kfree;
-		}
-	}
-
-	/* Inform the i2c layer */
-	if ((err = i2c_attach_client(client)))
-		goto exit_kfree;
-
-	list_add(&data->list, &x1205_clients);
-
-	dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
-
-	/* If requested, set the system time */
-	if (hctosys)
-		x1205_hctosys(client);
-
-	return 0;
-
-exit_kfree:
-	kfree(data);
-
-exit:
-	return err;
-}
-
-static int x1205_detach(struct i2c_client *client)
-{
-	int err;
-	struct x1205_data *data = i2c_get_clientdata(client);
-
-	dev_dbg(&client->dev, "%s\n", __FUNCTION__);
-
-	if ((err = i2c_detach_client(client)))
-		return err;
-
-	list_del(&data->list);
-
-	kfree(data);
-
-	return 0;
-}
-
-static int x1205_command(struct i2c_client *client, unsigned int cmd,
-	void *param)
-{
-	if (param == NULL)
-		return -EINVAL;
-
-	if (!capable(CAP_SYS_TIME))
-		return -EACCES;
-
-	dev_dbg(&client->dev, "%s: cmd=%d\n", __FUNCTION__, cmd);
-
-	switch (cmd) {
-	case X1205_CMD_GETDATETIME:
-		return x1205_get_datetime(client, param, X1205_CCR_BASE);
-
-	case X1205_CMD_SETTIME:
-		return x1205_set_datetime(client, param, 0,
-				X1205_CCR_BASE);
-
-	case X1205_CMD_SETDATETIME:
-		return x1205_set_datetime(client, param, 1,
-				X1205_CCR_BASE);
-
-	case X1205_CMD_GETALARM:
-		return x1205_get_datetime(client, param, X1205_ALM0_BASE);
-
-	case X1205_CMD_SETALARM:
-		return x1205_set_datetime(client, param, 1,
-				X1205_ALM0_BASE);
-
-	case X1205_CMD_GETDTRIM:
-		return x1205_get_dtrim(client, param);
-
-	case X1205_CMD_GETATRIM:
-		return x1205_get_atrim(client, param);
-
-	default:
-		return -EINVAL;
-	}
-}
-
-static int __init x1205_init(void)
-{
-	return i2c_add_driver(&x1205_driver);
-}
-
-static void __exit x1205_exit(void)
-{
-	i2c_del_driver(&x1205_driver);
-}
-
-MODULE_AUTHOR(
-	"Karen Spearel <kas11@tampabay.rr.com>, "
-	"Alessandro Zummo <a.zummo@towertech.it>");
-MODULE_DESCRIPTION("Xicor X1205 RTC driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRV_VERSION);
-
-EXPORT_SYMBOL_GPL(x1205_do_command);
-EXPORT_SYMBOL_GPL(x1205_direct_attach);
-
-module_init(x1205_init);
-module_exit(x1205_exit);