diff options
Diffstat (limited to 'recipes/linux/linux-2.6.26/boc01/005-081217-isl12024.patch')
| -rw-r--r-- | recipes/linux/linux-2.6.26/boc01/005-081217-isl12024.patch | 940 |
1 files changed, 940 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.26/boc01/005-081217-isl12024.patch b/recipes/linux/linux-2.6.26/boc01/005-081217-isl12024.patch new file mode 100644 index 0000000000..bcbc2b35db --- /dev/null +++ b/recipes/linux/linux-2.6.26/boc01/005-081217-isl12024.patch @@ -0,0 +1,940 @@ +Index: linux-2.6.26-NEW/drivers/i2c/chips/isl12024-eeprom.c +=================================================================== +--- /dev/null ++++ linux-2.6.26-NEW/drivers/i2c/chips/isl12024-eeprom.c +@@ -0,0 +1,254 @@ ++/* ++ * Intersil ISL12024 EEPROM class driver ++ * ++ * ++ * Copyright (C) 2007, CenoSYS (www.cenosys.com). ++ * Guillaume Ligneul ++ * Guillaume.ligneul@gmail.com ++ * ++ * Code is based on eeprom.c ++ * ++ * 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/kernel.h> ++#include <linux/init.h> ++#include <linux/module.h> ++//#include <linux/slab.h> ++//#include <linux/jiffies.h> ++#include <linux/i2c.h> ++#include <linux/mutex.h> ++#include <linux/i2c/isl12024.h> ++ ++/* Addresses to scan */ ++static const unsigned short normal_i2c[] = { ISL12024_I2C_EEPROM_ADDR, I2C_CLIENT_END }; ++ ++/* Insmod parameters */ ++I2C_CLIENT_INSMOD_1(eeprom); ++ ++ ++/* Size of EEPROM in bytes */ ++#define EEPROM_SIZE 4096 ++ ++/* Each client has this additional data */ ++struct eeprom_data { ++ struct i2c_client client; ++ struct mutex update_lock; ++}; ++ ++int ++isl12024_i2c_read(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; ++} ++ ++ ++int ++isl12024_i2c_write(struct i2c_client *client, u8 reg, u8 const buf[], ++ unsigned len) ++{ ++ int ret; ++ u8 i2c_buf[EEPROM_SIZE]; ++ ++ 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; ++} ++static int eeprom_attach_adapter(struct i2c_adapter *adapter); ++static int eeprom_detect(struct i2c_adapter *adapter, int address, int kind); ++static int eeprom_detach_client(struct i2c_client *client); ++ ++/* This is the driver that will be inserted */ ++static struct i2c_driver eeprom_driver = { ++ .driver = { ++ .name = "isl12024-eeprom", ++ }, ++ .attach_adapter = eeprom_attach_adapter, ++ .detach_client = eeprom_detach_client, ++}; ++ ++static ssize_t eeprom_read(struct kobject *kobj, struct bin_attribute *bin_attr, ++ char *buf, loff_t off, size_t count) ++{ ++ struct i2c_client *client = to_i2c_client(container_of(kobj, struct device, kobj)); ++ struct eeprom_data *data = i2c_get_clientdata(client); ++ int rc; ++ ++ mutex_lock(&data->update_lock); ++ ++ if (off >= EEPROM_SIZE) ++ return 0; ++ ++ if (off + count > EEPROM_SIZE) ++ count = EEPROM_SIZE - off; ++ ++ rc = isl12024_i2c_read(client,0,buf,EEPROM_SIZE); ++ ++ if (rc < 0){ ++ mutex_unlock(&data->update_lock); ++ return -EIO; ++ } ++ ++ mutex_unlock(&data->update_lock); ++ return count; ++} ++ ++static ssize_t eeprom_write(struct kobject *kobj, struct bin_attribute *attr, ++ char *buf, loff_t off, size_t count) ++{ ++ struct i2c_client *client = kobj_to_i2c_client(kobj); ++ struct eeprom_data *data = i2c_get_clientdata(client); ++ ++ if (off >= 256) ++ return -ENOSPC; ++ ++ if (off + count > 256) ++ count = 256 - off; ++ ++ mutex_unlock(&data->update_lock); ++ if (isl12024_i2c_write(client, off, buf, count) < 0) ++ { ++ mutex_unlock(&data->update_lock); ++ return -EIO; ++ } ++ ++ mutex_unlock(&data->update_lock); ++ return count; ++} ++ ++static struct bin_attribute eeprom_attr = { ++ .attr = { ++ .name = "eeprom", ++ .mode = S_IRUGO, ++ }, ++ .size = EEPROM_SIZE, ++ .read = eeprom_read, ++ .write= eeprom_write, ++}; ++ ++static int eeprom_attach_adapter(struct i2c_adapter *adapter) ++{ ++ return i2c_probe(adapter, &addr_data, eeprom_detect); ++} ++ ++/* This function is called by i2c_probe */ ++static int eeprom_detect(struct i2c_adapter *adapter, int address, int kind) ++{ ++ struct i2c_client *new_client; ++ struct eeprom_data *data; ++ int err = 0; ++ ++ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_READ_BYTE_DATA ++ | I2C_FUNC_SMBUS_BYTE)) ++ goto exit; ++ ++ if (!(data = kzalloc(sizeof(struct eeprom_data), GFP_KERNEL))) { ++ err = -ENOMEM; ++ goto exit; ++ } ++ ++ new_client = &data->client; ++ i2c_set_clientdata(new_client, data); ++ new_client->addr = address; ++ new_client->adapter = adapter; ++ new_client->driver = &eeprom_driver; ++ new_client->flags = 0; ++ ++ strlcpy(new_client->name, "isl12024-eeprom", I2C_NAME_SIZE); ++ mutex_init(&data->update_lock); ++ ++ /* Tell the I2C layer a new client has arrived */ ++ if ((err = i2c_attach_client(new_client))) ++ goto exit_kfree; ++ ++ /* create the sysfs eeprom file */ ++ err = sysfs_create_bin_file(&new_client->dev.kobj, &eeprom_attr); ++ if (err) ++ goto exit_detach; ++ ++ return 0; ++ ++exit_detach: ++ i2c_detach_client(new_client); ++exit_kfree: ++ kfree(data); ++exit: ++ return err; ++} ++ ++static int eeprom_detach_client(struct i2c_client *client) ++{ ++ int err; ++ ++ sysfs_remove_bin_file(&client->dev.kobj, &eeprom_attr); ++ ++ err = i2c_detach_client(client); ++ if (err) ++ return err; ++ ++ kfree(i2c_get_clientdata(client)); ++ ++ return 0; ++} ++ ++static int __init eeprom_init(void) ++{ ++ return i2c_add_driver(&eeprom_driver); ++} ++ ++static void __exit eeprom_exit(void) ++{ ++ i2c_del_driver(&eeprom_driver); ++} ++ ++ ++MODULE_AUTHOR("Guillaume Ligneul <guillaume.ligneul@cenosys.com>"); ++MODULE_DESCRIPTION("I2C Intersil12024 EEPROM driver"); ++MODULE_LICENSE("GPL"); ++ ++module_init(eeprom_init); ++module_exit(eeprom_exit); +Index: linux-2.6.26-NEW/drivers/i2c/chips/Kconfig +=================================================================== +--- linux-2.6.26-NEW.orig/drivers/i2c/chips/Kconfig ++++ linux-2.6.26-NEW/drivers/i2c/chips/Kconfig +@@ -14,6 +14,15 @@ config DS1682 + This driver can also be built as a module. If so, the module + will be called ds1682. + ++config ISL12024EEPROM ++ tristate "Intersil 12024 EEPROM" ++ depends on RTC_DRV_ISL12024 ++ help ++ If you say yes here you get support for Intersil12024 EEPROM. ++ ++ This driver can also be built as a module. If so, the module ++ will be called isl12024-eeprom. ++ + config SENSORS_EEPROM + tristate "EEPROM reader" + depends on EXPERIMENTAL +Index: linux-2.6.26-NEW/drivers/i2c/chips/Makefile +=================================================================== +--- linux-2.6.26-NEW.orig/drivers/i2c/chips/Makefile ++++ linux-2.6.26-NEW/drivers/i2c/chips/Makefile +@@ -9,6 +9,8 @@ + # * I/O expander drivers go to drivers/gpio + # + ++ ++obj-$(CONFIG_ISL12024EEPROM) += isl12024-eeprom.o + obj-$(CONFIG_DS1682) += ds1682.o + obj-$(CONFIG_SENSORS_EEPROM) += eeprom.o + obj-$(CONFIG_SENSORS_MAX6875) += max6875.o +Index: linux-2.6.26-NEW/drivers/rtc/Kconfig +=================================================================== +--- linux-2.6.26-NEW.orig/drivers/rtc/Kconfig ++++ linux-2.6.26-NEW/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-2.6.26-NEW/drivers/rtc/Makefile +=================================================================== +--- linux-2.6.26-NEW.orig/drivers/rtc/Makefile ++++ linux-2.6.26-NEW/drivers/rtc/Makefile +@@ -33,6 +33,7 @@ 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-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o + obj-$(CONFIG_RTC_DRV_M48T86) += rtc-m48t86.o +Index: linux-2.6.26-NEW/drivers/rtc/rtc-isl12024.c +=================================================================== +--- /dev/null ++++ linux-2.6.26-NEW/drivers/rtc/rtc-isl12024.c +@@ -0,0 +1,516 @@ ++/* ++ * 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/i2c/isl12024.h> ++#include <linux/delay.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-2.6.26-NEW/include/i2c/isl12024.h +=================================================================== +--- /dev/null ++++ linux-2.6.26-NEW/include/i2c/isl12024.h +@@ -0,0 +1,93 @@ ++#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_MSB 0x00 ++//#define ISL12024_REG_SC 0x30 /* Seconds */ ++//#define ISL12024_REG_MN 0x31 /* Minutes */ ++//#define ISL12024_REG_HR 0x32 /* Hours */ ++#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_*/ |