diff options
author | Jeremy Lainé <jeremy.laine@m4x.org> | 2009-02-26 13:11:08 +0100 |
---|---|---|
committer | Jeremy Lainé <jeremy.laine@m4x.org> | 2009-02-26 13:11:08 +0100 |
commit | 9db305be9d88f1950df77c30ec78339332e9340c (patch) | |
tree | 79fb2de4c35ac1c383215f0cc84823ce4ae78150 /packages/linux/linux-2.6.27/boc01/005-090112-isl12024.patch | |
parent | 2c15084856164efbcb1caff09eef99ba12b2deba (diff) |
linux-2.6.27: improve boc01 EEPROM support
Diffstat (limited to 'packages/linux/linux-2.6.27/boc01/005-090112-isl12024.patch')
-rw-r--r-- | packages/linux/linux-2.6.27/boc01/005-090112-isl12024.patch | 950 |
1 files changed, 0 insertions, 950 deletions
diff --git a/packages/linux/linux-2.6.27/boc01/005-090112-isl12024.patch b/packages/linux/linux-2.6.27/boc01/005-090112-isl12024.patch deleted file mode 100644 index 32bde9dfc8..0000000000 --- a/packages/linux/linux-2.6.27/boc01/005-090112-isl12024.patch +++ /dev/null @@ -1,950 +0,0 @@ -Index: linux-2.6.27/drivers/i2c/chips/isl12024-eeprom.c -=================================================================== ---- /dev/null -+++ linux-2.6.27/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-2.6.27/drivers/i2c/chips/Kconfig -=================================================================== ---- linux-2.6.27.orig/drivers/i2c/chips/Kconfig -+++ linux-2.6.27/drivers/i2c/chips/Kconfig -@@ -40,6 +40,15 @@ config AT24 - This driver can also be built as a module. If so, the module - will be called at24. - -+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-2.6.27/drivers/i2c/chips/Makefile -=================================================================== ---- linux-2.6.27.orig/drivers/i2c/chips/Makefile -+++ linux-2.6.27/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-$(CONFIG_AT24) += at24.o - obj-$(CONFIG_SENSORS_EEPROM) += eeprom.o -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 +1,516 @@ -+/* -+ * 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-2.6.27/include/linux/i2c/isl12024.h -=================================================================== ---- /dev/null -+++ linux-2.6.27/include/linux/i2c/isl12024.h -@@ -0,0 +1,103 @@ -+/* -+ * 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_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_*/ |