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-rw-r--r--recipes/linux/linux-2.6.27/boc01/005-090217-isl12024.patch669
1 files changed, 669 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.27/boc01/005-090217-isl12024.patch b/recipes/linux/linux-2.6.27/boc01/005-090217-isl12024.patch
new file mode 100644
index 0000000000..672e405de0
--- /dev/null
+++ b/recipes/linux/linux-2.6.27/boc01/005-090217-isl12024.patch
@@ -0,0 +1,669 @@
+Index: linux-2.6.27/drivers/rtc/Kconfig
+===================================================================
+--- linux-2.6.27.orig/drivers/rtc/Kconfig
++++ linux-2.6.27/drivers/rtc/Kconfig
+@@ -124,6 +124,12 @@ comment "I2C RTC drivers"
+
+ if I2C
+
++config RTC_DRV_ISL12024
++ tristate "Intersil 12024 RTC/ UniqueID"
++ help
++ If you say yes ....
++ This driver can also be built as a module.
++
+ config RTC_DRV_DS1307
+ tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00"
+ help
+Index: linux-2.6.27/drivers/rtc/Makefile
+===================================================================
+--- linux-2.6.27.orig/drivers/rtc/Makefile
++++ linux-2.6.27/drivers/rtc/Makefile
+@@ -34,6 +34,7 @@ obj-$(CONFIG_RTC_DRV_DS1742) += rtc-ds17
+ obj-$(CONFIG_RTC_DRV_EP93XX) += rtc-ep93xx.o
+ obj-$(CONFIG_RTC_DRV_FM3130) += rtc-fm3130.o
+ obj-$(CONFIG_RTC_DRV_ISL1208) += rtc-isl1208.o
++obj-$(CONFIG_RTC_DRV_ISL12024) += rtc-isl12024.o
+ obj-$(CONFIG_RTC_DRV_M41T80) += rtc-m41t80.o
+ obj-$(CONFIG_RTC_DRV_M41T94) += rtc-m41t94.o
+ obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o
+Index: linux-2.6.27/drivers/rtc/rtc-isl12024.c
+===================================================================
+--- /dev/null
++++ linux-2.6.27/drivers/rtc/rtc-isl12024.c
+@@ -0,0 +1,517 @@
++/*
++ * Intersil ISL12024 class driver
++ *
++ *
++ * Copyright (C) 2007, CenoSYS (www.cenosys.com).
++ * Guillaume Ligneul
++ * Guillaume.ligneul@gmail.com
++ *
++ * This software program is licensed subject to the GNU General Public License
++ * (GPL).Version 2,June 1991, available at http://www.fsf.org/copyleft/gpl.html
++ */
++
++#include <linux/module.h>
++#include <linux/i2c.h>
++#include <linux/bcd.h>
++#include <linux/rtc.h>
++#include <linux/proc_fs.h>
++#include <linux/delay.h>
++
++#include "isl12024.h"
++
++
++#define DBG 1
++#undef DBG
++
++static u8 buf_id[ISL12024_RTC_SECTION_LEN] = { 0 ,};
++
++#define DRV_NAME "isl12024"
++#define DRV_VERSION "0.1"
++
++/* i2c configuration */
++
++static const unsigned short normal_i2c[] = {
++ ISL12024_I2C_ADDR >>1, I2C_CLIENT_END
++};
++I2C_CLIENT_INSMOD;
++
++/* Procfs management */
++static struct proc_dir_entry * root_proc = NULL;
++static struct proc_dir_entry * entry_proc = NULL;
++static int read_proc (char * page, char ** start, off_t off, int count, int * eof, void * data);
++
++static int isl12024_get_status(struct i2c_client *client, unsigned char *sr);
++static int isl12024_fix_osc(struct i2c_client *client);
++
++
++static int isl12024_attach_adapter(struct i2c_adapter *adapter);
++static int isl12024_detach_client(struct i2c_client *client);
++
++// To debug (may be add in includ/linux/i2c-id.h)
++#define I2C_DRIVERID_ISL12024 97
++
++static struct i2c_driver isl12024_driver = {
++ .driver = {
++ .name = DRV_NAME,
++ },
++ .id = I2C_DRIVERID_ISL12024,
++ .attach_adapter = &isl12024_attach_adapter,
++ .detach_client = &isl12024_detach_client,
++};
++
++int
++isl12024_i2c_read_regs(struct i2c_client *client, u8 reg, u8 buf[],
++ unsigned len)
++{
++ int ret;
++ u8 dt_addr[2];
++
++ struct i2c_msg msgs[2] = {
++ {
++ .addr = client->addr,
++ .flags = 0,
++ .len = 2,
++ .buf = dt_addr,
++ },
++ {
++ .addr = client->addr,
++ .flags = I2C_M_RD,
++ .len = len ,
++ .buf = buf ,
++ },
++ };
++
++ dt_addr[0] = 0;
++ dt_addr[1] = reg;
++
++ ret = i2c_transfer(client->adapter, msgs, 2);
++ if ( ret < 0) {
++ dev_err(&client->dev, "read error\n");
++ return -EIO;
++ }
++ return ret;
++}
++
++EXPORT_SYMBOL(isl12024_i2c_read_regs);
++
++
++int
++isl12024_i2c_set_regs(struct i2c_client *client, u8 reg, u8 const buf[],
++ unsigned len)
++{
++ int ret;
++ u8 i2c_buf[10];
++
++ struct i2c_msg msgs[1] = {
++ {
++ .addr = client->addr,
++ .flags = 0,
++ .len = len+2,
++ .buf = i2c_buf,
++ },
++ };
++
++ i2c_buf[0] = 0;
++ i2c_buf[1] = reg;
++
++
++ memcpy(&i2c_buf[2], &buf[0], len );
++
++
++ ret = i2c_transfer(client->adapter, msgs, 1);
++ printk(KERN_INFO "i2c_transfer %d\n",ret);
++ return ret;
++}
++
++EXPORT_SYMBOL(isl12024_i2c_set_regs);
++
++static int isl12024_i2c_validate_client(struct i2c_client *client)
++{
++ u8 regs[ISL12024_RTC_SECTION_LEN] = { 0, };
++ u8 zero_mask[ISL12024_RTC_SECTION_LEN] = {
++ 0x80, 0x80, 0x40, 0xc0, 0xe0, 0x00, 0xf8, 0xc6
++ };
++
++ int i;
++ int ret;
++
++ ret = isl12024_i2c_read_regs(client, ISL12024_REG_SC, regs, ISL12024_RTC_SECTION_LEN);
++
++ if (ret < 0)
++ return ret;
++
++ for (i = 0; i < ISL12024_RTC_SECTION_LEN; ++i) {
++ if (regs[i] & zero_mask[i]) /* check if bits are cleared */
++ return -ENODEV;
++
++ }
++
++ return 0;
++}
++
++static int isl12024_read_time(struct i2c_client *client,
++ struct rtc_time *tm)
++{
++ unsigned char sr;
++ int err;
++ u8 regs[ISL12024_RTC_SECTION_LEN] = { 0, };
++
++ printk(KERN_INFO "%s\n ",__FUNCTION__ );
++
++
++ if (isl12024_get_status(client, &sr) < 0) {
++ dev_err(&client->dev, "%s: reading SR failed\n", __func__);
++ return -EIO;
++ }
++
++ err = isl12024_i2c_read_regs(client, ISL12024_REG_SC, regs, ISL12024_RTC_SECTION_LEN);
++
++#ifdef DBG
++ int i;
++ for(i=0; i<ISL12024_RTC_SECTION_LEN; i++)
++ printk(KERN_INFO "0x%2X\n", regs[i]);
++#endif
++
++ if (err < 0) {
++ dev_err(&client->dev, "%s: reading RTC section failed\n",
++ __func__);
++ return sr;
++ }
++
++ tm->tm_sec = BCD2BIN(regs[0]);
++ tm->tm_min = BCD2BIN(regs[1]);
++
++ { /* HR field has a more complex interpretation */
++ const u8 _hr = regs[2];
++ if (_hr & ISL12024_REG_HR_MIL) /* 24h format */
++ tm->tm_hour = BCD2BIN(_hr & 0x3f);
++ else { // 12h format
++ tm->tm_hour = BCD2BIN(_hr & 0x1f);
++ if (_hr & ISL12024_REG_HR_PM) /* PM flag set */
++ tm->tm_hour += 12;
++ }
++ }
++
++ tm->tm_mday = BCD2BIN(regs[3]);
++ tm->tm_mon = BCD2BIN(regs[4]);
++ tm->tm_year = BCD2BIN(regs[5]) + 100;
++ tm->tm_wday = BCD2BIN(regs[6]);
++
++ return rtc_valid_tm(tm);
++}
++
++static int isl12024_get_status(struct i2c_client *client, unsigned char *sr)
++{
++ static unsigned char sr_addr[2] = { 0, ISL12024_REG_SR };
++
++ struct i2c_msg msgs[] = {
++ { client->addr, 0, 2, sr_addr }, /* setup read ptr */
++ { client->addr, I2C_M_RD, 1, sr }, /* read status */
++ };
++
++ /* read status register */
++ if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) {
++ dev_err(&client->dev, "%s: read error\n", __func__);
++ return -EIO;
++ }
++
++ return 0;
++}
++
++static int isl12024_set_datetime(struct i2c_client *client, struct rtc_time *tm,
++ int datetoo, u8 reg_base, unsigned char alm_enable)
++{
++ int i, xfer, nbytes;
++ unsigned char buf[8];
++ unsigned char rdata[10] = { 0, reg_base };
++
++ static const unsigned char wel[3] = { 0, ISL12024_REG_SR,
++ ISL12024_SR_WEL };
++
++ static const unsigned char rwel[3] = { 0, ISL12024_REG_SR,
++ ISL12024_SR_WEL | ISL12024_SR_RWEL };
++
++ static const unsigned char diswe[3] = { 0, ISL12024_REG_SR, 0 };
++
++ dev_dbg(&client->dev,
++ "%s: secs=%d, mins=%d, hours=%d\n",
++ __func__,
++ tm->tm_sec, tm->tm_min, tm->tm_hour);
++
++ 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) | ISL12024_HR_MIL;
++
++ /* should we also set the date? */
++ if (datetoo) {
++ dev_dbg(&client->dev,
++ "%s: mday=%d, mon=%d, year=%d, wday=%d\n",
++ __func__,
++ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
++
++ buf[CCR_MDAY] = BIN2BCD(tm->tm_mday);
++
++ /* month, 1 - 12 */
++ buf[CCR_MONTH] = BIN2BCD(tm->tm_mon);
++
++ /* year, since the rtc epoch*/
++ buf[CCR_YEAR] = BIN2BCD(tm->tm_year % 100);
++ buf[CCR_WDAY] = tm->tm_wday & 0x07;
++ buf[CCR_Y2K] = BIN2BCD(tm->tm_year / 100);
++ }
++
++ /* If writing alarm registers, set compare bits on registers 0-4 */
++ if (reg_base < ISL12024_CCR_BASE)
++ for (i = 0; i <= 4; i++)
++ buf[i] |= 0x80;
++
++ /* this sequence is required to unlock the chip */
++ if ((xfer = i2c_master_send(client, wel, 3)) != 3) {
++ dev_err(&client->dev, "%s: wel - %d\n", __func__, xfer);
++ return -EIO;
++ }
++
++ if ((xfer = i2c_master_send(client, rwel, 3)) != 3) {
++ dev_err(&client->dev, "%s: rwel - %d\n", __func__, xfer);
++ return -EIO;
++ }
++
++
++ /* write register's data */
++ if (datetoo)
++ nbytes = 8;
++ else
++ nbytes = 3;
++ for (i = 0; i < nbytes; i++)
++ rdata[2+i] = buf[i];
++
++ xfer = i2c_master_send(client, rdata, nbytes+2);
++ if (xfer != nbytes+2) {
++ dev_err(&client->dev,
++ "%s: result=%d addr=%02x, data=%02x\n",
++ __func__,
++ xfer, rdata[1], rdata[2]);
++ return -EIO;
++ }
++
++ /* If we wrote to the nonvolatile region, wait 10msec for write cycle*/
++ if (reg_base < ISL12024_CCR_BASE) {
++ unsigned char al0e[3] = { 0, ISL12024_REG_INT, 0 };
++
++ msleep(10);
++
++ /* ...and set or clear the AL0E bit in the INT register */
++
++ /* Need to set RWEL again as the write has cleared it */
++ xfer = i2c_master_send(client, rwel, 3);
++ if (xfer != 3) {
++ dev_err(&client->dev,
++ "%s: aloe rwel - %d\n",
++ __func__,
++ xfer);
++ return -EIO;
++ }
++
++ if (alm_enable)
++ al0e[2] = ISL12024_INT_AL0E;
++
++ xfer = i2c_master_send(client, al0e, 3);
++ if (xfer != 3) {
++ dev_err(&client->dev,
++ "%s: al0e - %d\n",
++ __func__,
++ xfer);
++ return -EIO;
++ }
++
++ /* and wait 10msec again for this write to complete */
++ msleep(10);
++ }
++
++ /* disable further writes */
++ if ((xfer = i2c_master_send(client, diswe, 3)) != 3) {
++ dev_err(&client->dev, "%s: diswe - %d\n", __func__, xfer);
++ return -EIO;
++ }
++
++ return 0;
++}
++
++static int isl12024_fix_osc(struct i2c_client *client)
++{
++ int err;
++ struct rtc_time tm;
++
++ tm.tm_hour = tm.tm_min = tm.tm_sec = 0;
++
++ err = isl12024_set_datetime(client, &tm, 0, ISL12024_CCR_BASE, 0);
++ if (err < 0)
++ printk(KERN_INFO "unable to restart the oscillator\n");
++
++ return err;
++}
++
++static int isl12024_rtc_read_time(struct device *dev, struct rtc_time *tm)
++{
++ return isl12024_read_time(to_i2c_client(dev), tm);
++
++}
++
++static int isl12024_rtc_set_time(struct device *dev, struct rtc_time *tm)
++{
++ return isl12024_set_datetime(to_i2c_client(dev),
++ tm, 1, ISL12024_CCR_BASE, 0);
++}
++
++static int
++isl12024_rtc_proc(struct device *dev, struct seq_file *seq)
++{
++
++ /* Nothing to do */
++
++ return 0;
++}
++
++static const struct rtc_class_ops isl12024_rtc_ops = {
++ .proc = isl12024_rtc_proc,
++ .read_time = isl12024_rtc_read_time,
++ .set_time = isl12024_rtc_set_time,
++};
++
++static int read_proc (char * page, char ** start, off_t off, int count, int * eof, void * data)
++{
++ int i=0;
++
++ printk("id: 0x");
++ for(i=0;i<ISL12024_RTC_SECTION_LEN;i++)
++ printk("%02X",buf_id[i]);
++ printk("\n");
++ return 0;
++}
++
++static int
++isl12024_probe(struct i2c_adapter *adapter, int addr, int kind)
++{
++
++ int rc = 0;
++ int err = 0;
++ unsigned char sr;
++ struct i2c_client *new_client = NULL;
++ struct rtc_device *rtc = NULL;
++
++ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
++ rc = -ENODEV;
++ goto failout;
++ }
++
++ new_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
++ if (new_client == NULL) {
++ rc = -ENOMEM;
++ goto failout;
++ }
++
++ new_client->addr = addr;
++ new_client->adapter = adapter;
++ new_client->driver = &isl12024_driver;
++ new_client->flags = 0;
++ strcpy(new_client->name, DRV_NAME);
++
++ if (kind < 0) {
++ rc = isl12024_i2c_validate_client(new_client);
++ if (rc < 0)
++ goto failout;
++ }
++
++ rc = i2c_attach_client(new_client);
++ if (rc < 0)
++ goto failout;
++
++ rtc = rtc_device_register(isl12024_driver.driver.name,
++ &new_client->dev,
++ &isl12024_rtc_ops, THIS_MODULE);
++
++ if (IS_ERR(rtc)) {
++ printk("Error during rtc registration\n");
++ rc = PTR_ERR(rtc);
++ goto failout;
++ }
++
++ i2c_set_clientdata(new_client, rtc);
++
++ /* Check for power failures and eventualy enable the osc */
++ if ((err = isl12024_get_status(new_client, &sr)) == 0) {
++ if (sr & ISL12024_SR_RTCF) {
++ printk(KERN_INFO "power failure detected, "
++ "please set the clock\n");
++ udelay(50);
++ isl12024_fix_osc(new_client);
++ }
++ }
++ else
++ printk(KERN_INFO "couldn't read status\n");
++
++ root_proc = proc_mkdir( "isl12024", 0 );
++ entry_proc = create_proc_entry("id", S_IFREG | S_IRUGO | S_IWUSR, root_proc);
++
++ if (entry_proc == NULL)
++ return -1;
++
++ entry_proc->owner = THIS_MODULE;
++ entry_proc->read_proc = read_proc;
++
++ /* read unique id from eeprom */
++ isl12024_i2c_read_regs(new_client, ISL12024_REG_ID, buf_id, sizeof(buf_id));
++
++
++ return 0;
++
++ failout:
++ kfree(new_client);
++ return rc;
++}
++
++static int
++isl12024_attach_adapter (struct i2c_adapter *adapter)
++{
++ return i2c_probe(adapter, &addr_data, isl12024_probe);
++}
++
++static int
++isl12024_detach_client(struct i2c_client *client)
++{
++ int rc;
++ struct rtc_device *const rtc = i2c_get_clientdata(client);
++
++ if (rtc)
++ rtc_device_unregister(rtc);
++
++ rc = i2c_detach_client(client);
++ if (rc)
++ return rc;
++
++ kfree(client);
++
++ return 0;
++}
++
++/* module init/exit */
++
++static int __init isl12024_init(void)
++{
++ return i2c_add_driver(&isl12024_driver);
++}
++
++static void __exit isl12024_exit(void)
++{
++ i2c_del_driver(&isl12024_driver);
++}
++
++MODULE_AUTHOR("Guillaume Ligneul <guillaume.ligneul@cenosys.com>");
++MODULE_DESCRIPTION("Intersil ISL12024 driver");
++MODULE_LICENSE("GPL");
++MODULE_VERSION(DRV_VERSION);
++
++module_init(isl12024_init);
++module_exit(isl12024_exit);
+Index: linux-2.6.27/drivers/i2c/chips/at24.c
+===================================================================
+--- linux-2.6.27.orig/drivers/i2c/chips/at24.c
++++ linux-2.6.27/drivers/i2c/chips/at24.c
+@@ -114,6 +114,8 @@ static const struct i2c_device_id at24_i
+ { "spd", AT24_DEVICE_MAGIC(2048 / 8,
+ AT24_FLAG_READONLY | AT24_FLAG_IRUGO) },
+ { "24c04", AT24_DEVICE_MAGIC(4096 / 8, 0) },
++ /* Intersil RTC/Unique-ID isl12024 eeprom handled here */
++ { "isl12024",AT24_DEVICE_MAGIC(4096 / 8, AT24_FLAG_ADDR16) },
+ /* 24rf08 quirk is handled at i2c-core */
+ { "24c08", AT24_DEVICE_MAGIC(8192 / 8, 0) },
+ { "24c16", AT24_DEVICE_MAGIC(16384 / 8, 0) },
+Index: linux-2.6.27/drivers/rtc/isl12024.h
+===================================================================
+--- /dev/null
++++ linux-2.6.27/drivers/rtc/isl12024.h
+@@ -0,0 +1,100 @@
++/*
++ * Intersil ISL12024 chip registers definitions
++ *
++ *
++ * Copyright (C) 2008, CenoSYS (www.cenosys.com).
++ * Guillaume Ligneul
++ * Guillaume.ligneul@gmail.com
++ *
++ * This software program is licensed subject to the GNU General Public License
++ * (GPL).Version 2,June 1991, available at http://www.fsf.org/copyleft/gpl.html
++ */
++
++#ifndef ISL12024_H_
++#define ISL12024_H_
++
++#define ISL12024_REG_SR 0x3F /* status register */
++#define ISL12024_REG_Y2K 0x37
++#define ISL12024_REG_DW 0x36
++#define ISL12024_REG_YR 0x35
++#define ISL12024_REG_MO 0x34
++#define ISL12024_REG_DT 0x33
++#define ISL12024_REG_HR 0x32
++#define ISL12024_REG_MN 0x31
++#define ISL12024_REG_SC 0x30
++#define ISL12024_REG_DTR 0x13
++#define ISL12024_REG_ATR 0x12
++#define ISL12024_REG_INT 0x11
++#define ISL12024_REG_0 0x10
++#define ISL12024_REG_Y2K1 0x0F
++#define ISL12024_REG_DWA1 0x0E
++#define ISL12024_REG_YRA1 0x0D
++#define ISL12024_REG_MOA1 0x0C
++#define ISL12024_REG_DTA1 0x0B
++#define ISL12024_REG_HRA1 0x0A
++#define ISL12024_REG_MNA1 0x09
++#define ISL12024_REG_SCA1 0x08
++#define ISL12024_REG_Y2K0 0x07
++#define ISL12024_REG_DWA0 0x06
++#define ISL12024_REG_YRA0 0x05
++#define ISL12024_REG_MOA0 0x04
++#define ISL12024_REG_DTA0 0x03
++#define ISL12024_REG_HRA0 0x02
++#define ISL12024_REG_MNA0 0x01
++#define ISL12024_REG_SCA0 0x00
++
++#define ISL12024_CCR_BASE 0x30 /* Base address of CCR */
++#define ISL12024_ALM0_BASE 0x00 /* Base address of ALARM0 */
++
++#define ISL12024_SR_RTCF 0x01 /* Clock failure */
++#define ISL12024_SR_WEL 0x02 /* Write Enable Latch */
++#define ISL12024_SR_RWEL 0x04 /* Register Write Enable */
++#define ISL12024_SR_AL0 0x20 /* Alarm 0 match */
++
++#define ISL12024_DTR_DTR0 0x01
++#define ISL12024_DTR_DTR1 0x02
++#define ISL12024_DTR_DTR2 0x04
++
++#define ISL12024_HR_MIL 0x80 /* Set in ccr.hour for 24 hr mode */
++
++#define ISL12024_INT_AL0E 0x20 /* Alarm 0 enable */
++
++/* I2C ADDRESS */
++#define ISL12024_I2C_ADDR 0xDE
++#define ISL12024_I2C_EEPROM_ADDR 0x57
++
++/* device id section */
++#define ISL12024_REG_ID 0x20
++
++/* Register map */
++/* rtc section */
++#define ISL12024_REG_HR_MIL (1<<7) /* 24h/12h mode */
++#define ISL12024_REG_HR_PM (1<<5) /* PM/AM bit in 12h mode */
++//#define ISL12024_REG_DT 0x33 /* Date */
++//#define ISL12024_REG_MO 0x34 /* Month */
++//#define ISL12024_REG_YR 0x35 /* Year */
++//#define ISL12024_REG_DW 0x36
++//#define ISL12024_REG_Y2K 0x37
++#define ISL12024_RTC_SECTION_LEN 8
++
++/* control/status section */
++//#define ISL12024_REG_SR 0x3F
++//#define ISL12024_REG_SR_BAT (1<<7) /* battery */
++//#define ISL12024_REG_SR_AL1 (1<<6) /* alarm 0 */
++//#define ISL12024_REG_SR_AL0 (1<<5) /* alarm 1 */
++//#define ISL12024_REG_SR_OSCF (1<<4) /* oscillator fail */
++//#define ISL12024_REG_SR_RWEL (1<<2) /* register write enable latch */
++//#define ISL12024_REG_SR_WEL (1<<1) /* write enable latch */
++//#define ISL12024_REG_SR_RTCF (1<<0) /* rtc fail */
++//#define ISL12024_REG_INT 0x11
++
++#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
++
++#endif /*ISL12024_H_*/