diff --git a/drivers/rtc/rtc-m41t66.c b/drivers/rtc/rtc-m41t66.c deleted file mode 100755 index f4dee44b7586..000000000000 --- a/drivers/rtc/rtc-m41t66.c +++ /dev/null @@ -1,817 +0,0 @@ -/* - * I2C client/driver for the ST M41T62 family of i2c rtc chips. - * - * Author: lhh - *Port to rk29 by yxj - * - * Based on m41t00.c by Mark A. Greer - * - * 2010 (c) rockchip - * - * 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. - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - - -#include -#include -#include -#include -#include -#include -#include - - - - -#define M41T62_REG_SSEC 0 -#define M41T62_REG_SEC 1 -#define M41T62_REG_MIN 2 -#define M41T62_REG_HOUR 3 -#define M41T62_REG_SQWDAY 4 -#define M41T62_REG_DAY 5 -#define M41T62_REG_MON 6 -#define M41T62_REG_YEAR 7 -#define M41T62_REG_ALARM_MON 0xa -#define M41T62_REG_ALARM_DAY 0xb -#define M41T62_REG_ALARM_HOUR 0xc -#define M41T62_REG_ALARM_MIN 0xd -#define M41T62_REG_ALARM_SEC 0xe -#define M41T62_REG_FLAGS 0xf -#define M41T62_REG_SQW 0x13 - -#define M41T62_REG_SEC_INDEX (M41T62_REG_SEC - 1) -#define M41T62_REG_MIN_INDEX (M41T62_REG_MIN - 1) -#define M41T62_REG_HOUR_INDEX (M41T62_REG_HOUR - 1) -#define M41T62_REG_SQWDAY_INDEX (M41T62_REG_SQWDAY - 1) -#define M41T62_REG_DAY_INDEX (M41T62_REG_DAY - 1) -#define M41T62_REG_MON_INDEX (M41T62_REG_MON - 1) -#define M41T62_REG_YEAR_INDEX (M41T62_REG_YEAR - 1) - -#define M41T62_DATETIME_REG_SIZE (M41T62_REG_YEAR ) - -#define M41T62_REG_ALARM_MON_INDEX (M41T62_REG_ALARM_MON-0x0a) -#define M41T62_REG_ALARM_DAY_INDEX (M41T62_REG_ALARM_DAY-0x0a) -#define M41T62_REG_ALARM_HOUR_INDEX (M41T62_REG_ALARM_HOUR-0x0a) -#define M41T62_REG_ALARM_MIN_INDEX (M41T62_REG_ALARM_MIN-0x0a) -#define M41T62_REG_ALARM_SEC_INDEX (M41T62_REG_ALARM_SEC-0x0a) -#define M41T62_REG_FLAGS_INDEX (M41T62_REG_FLAGS-0x0a) - - -#define M41T62_ALARM_REG_SIZE \ - (M41T62_REG_FLAGS + 1 - M41T62_REG_ALARM_MON) - - -#define M41T62_SEC_ST (1 << 7) /* ST: Stop Bit */ -#define M41T62_ALMON_AFE (1 << 7) /* AFE: alarm flag Enable Bit */ -#define M41T62_ALMON_SQWE (1 << 6) /* SQWE: SQW Enable Bit */ -//#define M41T62_ALHOUR_HT (1 << 6) /* HT: Halt Update Bit */ -#define M41T62_FLAGS_AF (1 << 6) /* AF: Alarm Flag Bit */ -//#define M41T62_FLAGS_BATT_LOW (1 << 4) /* BL: Battery Low Bit */ -#define M41T62_WATCHDOG_RB2 (1 << 7) /* RB: Watchdog resolution */ -#define M41T62_WATCHDOG_RB1 (1 << 1) /* RB: Watchdog resolution */ -#define M41T62_WATCHDOG_RB0 (1 << 0) /* RB: Watchdog resolution */ - -//#define M41T62_FEATURE_HT (1 << 0) /* Halt feature */ -//#define M41T62_FEATURE_BL (1 << 1) /* Battery low indicator */ -//#define M41T62_FEATURE_SQ (1 << 2) /* Squarewave feature */ -//#define M41T62_FEATURE_WD (1 << 3) /* Extra watchdog resolution */ -//#define M41T62_FEATURE_SQ_ALT (1 << 4) /* RSx bits are in reg 4 */ - -#define REPEAT_SEC 5 -#define REPEAT_MIN 4 -#define REPEAT_HOUR 3 -#define REPEAT_DAY 2 -#define REPEAT_MON 1 -#define REPEAT_YEAR 0 -#define RTC_SPEED 100 * 1000 - - - -#define DRV_VERSION "0.05" -#define DRV_NAME "rtc-M41T66" -#if 1 -#define DBG printk//(x...) printk(KERN_INFO "rtc-M41T62:" x) -#else -#define DBG(x...) -#endif - -//static struct semaphore rtc_sem;//Ryan - - -struct rock_rtc { - int irq; - struct i2c_client *client; - struct work_struct work; - struct mutex mutex; - struct rtc_device *rtc; - int exiting; - struct rtc_wkalrm alarm; - struct wake_lock wake_lock; -}; - - -static int rtc_alarm_repeat_set(int mod) -{ - return 0; -} - - -static irqreturn_t rtc_wakeup_irq(int irq, void *dev_id) -{ - struct rock_rtc *rk_rtc = (struct rock_rtc *)dev_id; - DBG("enter %s\n",__func__); - disable_irq_nosync(irq); - schedule_work(&rk_rtc->work); - return IRQ_HANDLED; -} - - -static int m41t62_i2c_read_regs(struct i2c_client *client, u8 reg, u8 buf[], unsigned len) -{ - int ret; - - - ret = i2c_master_reg8_recv(client, reg, buf, len, RTC_SPEED); - if(ret < 0 ) - { - printk("%s:rtc m41t62 read reg error\n\n\n",__func__); - } - - return ret; -} - -static int m41t62_i2c_set_regs(struct i2c_client *client, u8 reg, u8 const buf[], __u16 len) -{ - int ret; - ret = i2c_master_reg8_send(client, reg, buf, (int)len, RTC_SPEED); - if(ret < 0) - { - printk("%s error>>>>>\n",__func__); - } - return ret; -} - -static int m41t62_init_device(struct i2c_client *client) -{ - //DBG("%s\n",__func__); - - u8 alarmbuf[M41T62_ALARM_REG_SIZE]; - u8 sqwdayreg; - - //read alarm register current value - m41t62_i2c_read_regs(client,M41T62_REG_ALARM_MON,alarmbuf,M41T62_ALARM_REG_SIZE); - - - /*DBG("init alarm mon=0x%x, day=0x%x, hour=0x%x, min=0x%x, sec=0x%x, flags=0x%x\n", - alarmbuf[M41T62_REG_ALARM_MON_INDEX], - alarmbuf[M41T62_REG_ALARM_DAY_INDEX], - alarmbuf[M41T62_REG_ALARM_HOUR_INDEX], - alarmbuf[M41T62_REG_ALARM_MIN_INDEX], - alarmbuf[M41T62_REG_ALARM_SEC_INDEX], - alarmbuf[M41T62_REG_FLAGS_INDEX]);*/ - - //clear alarm register - alarmbuf[M41T62_REG_ALARM_MON_INDEX] &= ~(0x1f | M41T62_ALMON_AFE); - alarmbuf[M41T62_REG_ALARM_DAY_INDEX] = 0; - alarmbuf[M41T62_REG_ALARM_HOUR_INDEX] = 0; - alarmbuf[M41T62_REG_ALARM_MIN_INDEX] = 0; - alarmbuf[M41T62_REG_ALARM_SEC_INDEX] = 0; - alarmbuf[M41T62_REG_FLAGS_INDEX] = 0; - - //write alarm register - m41t62_i2c_set_regs(client,M41T62_REG_ALARM_MON,alarmbuf,M41T62_ALARM_REG_SIZE); - - //set outclk to 32768HZ - m41t62_i2c_read_regs(client,M41T62_REG_SQWDAY,&sqwdayreg,1); - sqwdayreg =(sqwdayreg|0x10)&0x1f; - m41t62_i2c_set_regs(client,M41T62_REG_SQWDAY,&sqwdayreg,1); - //m41t62_i2c_read_regs(client,M41T62_REG_SQWDAY,&sqwdayreg,1); - //printk("sqwdayreg:0x%x\n",sqwdayreg); - #if 0 - sqwdayreg =0; - m41t62_i2c_read_regs(client,M41T62_REG_FLAGS,&sqwdayreg,1); //YLZ++ - - printk("%s:rtc m41t2 flag_reg = 0x%x\n",__func__,sqwdayreg); - // if(sqwdayreg & 0x04) - { - - m41t62_i2c_read_regs(client,M41T62_REG_SEC,&sqwdayreg,1); //YLZ++ - printk("%s:rtc m41t2 sec_reg = 0x%x\n",__func__,sqwdayreg); - sqwdayreg |= 0x80; - m41t62_i2c_set_regs(client,M41T62_REG_SEC,&sqwdayreg,1); - sqwdayreg =0x7f; - m41t62_i2c_set_regs(client,M41T62_REG_SEC,&sqwdayreg,1); - m41t62_i2c_read_regs(client,M41T62_REG_SEC,&sqwdayreg,1); //YLZ++ - printk("%s:rtc m41t2 sec_reg = 0x%x\n",__func__,sqwdayreg); - - - } - sqwdayreg =0; - m41t62_i2c_read_regs(client,M41T62_REG_FLAGS,&sqwdayreg,1); //YLZ++ - printk("%s:rtc m41t2 atfer flag_reg = 0x%x\n",__func__,sqwdayreg); - #endif - - return 0; -} - -static int m41t62_get_datetime(struct i2c_client *client, - struct rtc_time *tm) -{ - - - struct rock_rtc *rk_rtc = i2c_get_clientdata(client); - u8 datetime[M41T62_DATETIME_REG_SIZE]; - int ret = 0; - - mutex_lock(&rk_rtc->mutex); - ret = m41t62_i2c_read_regs(client,M41T62_REG_SEC,datetime,M41T62_DATETIME_REG_SIZE); - if(ret < 0) - { - printk("%s:read date time from rtc m41t2 error\n",__func__); - } - else - { - ret = 0; - } - mutex_unlock(&rk_rtc->mutex); - /*DBG("-------M41T62_REG_SEC=%x--",datetime[M41T62_REG_SEC_INDEX]); - DBG("-------M41T62_REG_MIN=%x--",datetime[M41T62_REG_MIN_INDEX]); - DBG("-------M41T62_REG_HOUR=%x--",datetime[M41T62_REG_HOUR_INDEX]); - DBG("-------M41T62_REG_SQWDAY=%x--",datetime[M41T62_REG_SQWDAY_INDEX]); - DBG("-------M41T62_REG_DAY=%x--",datetime[M41T62_REG_DAY_INDEX]); - DBG("-------M41T62_REG_MON=%x--",datetime[M41T62_REG_MON_INDEX]); - DBG("-------M41T62_REG_YEAR=%x--",datetime[M41T62_REG_YEAR_INDEX]);*/ - - tm->tm_sec = bcd2bin(datetime[M41T62_REG_SEC_INDEX]& 0x7f); - tm->tm_min = bcd2bin(datetime[M41T62_REG_MIN_INDEX] & 0x7f); - tm->tm_hour = bcd2bin(datetime[M41T62_REG_HOUR_INDEX] & 0x3f); - tm->tm_mday = bcd2bin(datetime[M41T62_REG_DAY_INDEX] & 0x3f); - tm->tm_wday = bcd2bin(datetime[M41T62_REG_SQWDAY_INDEX] & 0x07); - tm->tm_mon = bcd2bin(datetime[M41T62_REG_MON_INDEX] & 0x1f) - 1; - // assume 20YY not 19YY, and ignore the Century Bit - tm->tm_year = bcd2bin(datetime[M41T62_REG_YEAR_INDEX]) + 100; - DBG("%s>>>>%4d-%02d-%02d>>wday:%d>>%02d:%02d:%02d>>\n", - __func__,tm->tm_year+1900,tm->tm_mon+1,tm->tm_mday,tm->tm_wday, - tm->tm_hour,tm->tm_min,tm->tm_sec); - - if(tm->tm_year < 100) - { - printk(KERN_INFO "%s:the time read from the rtc M41T62 is illegal ,\ - we will use the default time:2010.8.2\n",__func__); - tm->tm_sec = 1; - tm->tm_min = 7; - tm->tm_hour = 7; - tm->tm_mday = 2; - tm->tm_wday = 4; - tm->tm_mon = 7; - tm->tm_year = 110; - } - - - return ret; -} - -/* Sets the given date and time to the real time clock. */ -static int m41t62_set_datetime(struct i2c_client *client, struct rtc_time *tm) -{ - - struct rock_rtc *rk_rtc = i2c_get_clientdata(client); - int ret = 0; - u8 datetime[M41T62_DATETIME_REG_SIZE]; - - datetime[M41T62_REG_SEC_INDEX] = bin2bcd(tm->tm_sec); - datetime[M41T62_REG_MIN_INDEX] = bin2bcd(tm->tm_min); - datetime[M41T62_REG_HOUR_INDEX] =bin2bcd(tm->tm_hour) ; - datetime[M41T62_REG_SQWDAY_INDEX] =(tm->tm_wday & 0x07) |0x10; - datetime[M41T62_REG_DAY_INDEX] = bin2bcd(tm->tm_mday); - datetime[M41T62_REG_MON_INDEX] = bin2bcd(tm->tm_mon + 1) ; - /* assume 20YY not 19YY */ - datetime[M41T62_REG_YEAR_INDEX] = bin2bcd(tm->tm_year % 100); - printk(KERN_INFO "%s:set time %4d-%02d-%02d %02d:%02d:%02d to rtc \n",__func__, - tm->tm_year+1900,tm->tm_mon+1,tm->tm_mday,tm->tm_hour,tm->tm_min,tm->tm_sec); - - mutex_lock(&rk_rtc->mutex); - ret = m41t62_i2c_set_regs(client,M41T62_REG_SEC,datetime, M41T62_DATETIME_REG_SIZE); - if(ret < 0) - { - printk(KERN_INFO "%s:set time to rtc m41t62 error\n",__func__); - } - else - { - ret = 0; - } - - mutex_unlock(&rk_rtc->mutex); - - return ret; -} - -static int m41t62_rtc_read_time(struct device *dev, struct rtc_time *tm) -{ - //DBG("%s>>>>>>>>>>>\n",__func__); - return m41t62_get_datetime(to_i2c_client(dev), tm); -} - -static int m41t62_rtc_set_time(struct device *dev, struct rtc_time *tm) -{ - //DBG("%s\n",__func__); - return m41t62_set_datetime(to_i2c_client(dev), tm); -} - -#if defined(CONFIG_RTC_INTF_DEV) || defined(CONFIG_RTC_INTF_DEV_MODULE) -static int m41t62_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) -{ - int rc; - struct i2c_client *client = to_i2c_client(dev); - - DBG("%s>>>>>>>>>%d\n",__func__ ,cmd); - switch (cmd) { - case RTC_AIE_OFF: - case RTC_AIE_ON: - break; - default: - DBG("RTC func m41t62_rtc_ioctl -ENOIOCTLCMD\n"); - return -ENOIOCTLCMD; - } - DBG("RTC func m41t62_rtc_ioctl 1\n"); - rc = i2c_smbus_read_byte_data(client, M41T62_REG_ALARM_MON); - if (rc < 0) - goto err; - switch (cmd) { - case RTC_AIE_OFF: - rc &= ~M41T62_ALMON_AFE; - break; - case RTC_AIE_ON: - rc |= M41T62_ALMON_AFE; - break; - } - DBG("\n@@@@@@@@@@@RTC func m41t62_rtc_ioctl 2@@@@@@@@@@@@@\n"); - if (i2c_smbus_write_byte_data(client, M41T62_REG_ALARM_MON, rc) < 0) - goto err; - DBG("\n@@@@@@@@@@@RTC func m41t62_rtc_ioctl 3@@@@@@@@@@@@@\n"); - return 0; -err: - return -EIO; -} -#else -#define m41t62_rtc_ioctl NULL -#endif - -static int m41t62_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) -{ - //DBG("%s>>>>>>>>>>>>\n",__func__); - struct i2c_client *client = to_i2c_client(dev); - struct rock_rtc *rk_rtc = i2c_get_clientdata(client); - struct rtc_time current_time ; - u8 alarmbuf[M41T62_ALARM_REG_SIZE]; - int ret = 0; - - - - mutex_lock(&rk_rtc->mutex); - //read the current value of alarm register - m41t62_i2c_read_regs(client,M41T62_REG_ALARM_MON,alarmbuf, M41T62_ALARM_REG_SIZE); - mutex_unlock(&rk_rtc->mutex); - - //clear alarm register - alarmbuf[M41T62_REG_ALARM_MON_INDEX] &= ~(0x1f | M41T62_ALMON_AFE); - alarmbuf[M41T62_REG_ALARM_DAY_INDEX] = 0; - alarmbuf[M41T62_REG_ALARM_HOUR_INDEX] &= ~(0x3f | 0x80); - alarmbuf[M41T62_REG_ALARM_MIN_INDEX] = 0; - alarmbuf[M41T62_REG_ALARM_SEC_INDEX] = 0; - - - rk_rtc->alarm = *alarm; - DBG("time write to alarm :%4d-%02d-%02d %02d:%02d:%02d>>enable:%d\n", - alarm->time.tm_year+1900, - alarm->time.tm_mon, - alarm->time.tm_mday, - alarm->time.tm_hour, - alarm->time.tm_min, - alarm->time.tm_sec, - alarm->enabled); - //get current time - m41t62_get_datetime(client,¤t_time); - DBG("current time :%4d-%02d-%02d %02d:%02d:%02d>>\n", - current_time.tm_year+1900, - current_time.tm_mon, - current_time.tm_mday, - current_time.tm_hour, - current_time.tm_min, - current_time.tm_sec); - - /* offset into rtc's regs */ - alarmbuf[M41T62_REG_ALARM_SEC_INDEX] |= alarm->time.tm_sec >= 0 ?bin2bcd(alarm->time.tm_sec) : 0x80; - alarmbuf[M41T62_REG_ALARM_MIN_INDEX] |= alarm->time.tm_min >= 0 ?bin2bcd(alarm->time.tm_min) : 0x80; - alarmbuf[M41T62_REG_ALARM_HOUR_INDEX] |= alarm->time.tm_hour >= 0 ?bin2bcd(alarm->time.tm_hour) : 0x80; - alarmbuf[M41T62_REG_ALARM_DAY_INDEX] |= alarm->time.tm_mday >= 0 ?bin2bcd(alarm->time.tm_mday) : 0x80; - if (alarm->time.tm_mon >= 0) - alarmbuf[M41T62_REG_ALARM_MON_INDEX] |= bin2bcd(alarm->time.tm_mon + 1); - else - alarmbuf[M41T62_REG_ALARM_DAY_INDEX] |= 0x40; - - //Ryan@... - //DBG("enable mon day"); - alarmbuf[M41T62_REG_ALARM_MON_INDEX] |= M41T62_ALMON_AFE ; - alarmbuf[M41T62_REG_ALARM_DAY_INDEX] |= 0xc0;//mon, day repeat - //reg[M41T62_REG_ALARM_HOUR] |= 0x80;//hour repeat - //reg[M41T62_REG_ALARM_MIN] |= 0x80;//min repeat - - - - - //write alarm register - mutex_lock(&rk_rtc->mutex); - ret = m41t62_i2c_set_regs(client,M41T62_REG_ALARM_MON,alarmbuf, M41T62_DATETIME_REG_SIZE); - if(ret < 0) - { - printk(KERN_INFO "%s:set rtc m41t62 alarm error\n",__func__); - } - else - { - ret = 0; - } - - - mutex_unlock(&rk_rtc->mutex); - return ret; - -} - -static int m41t62_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *t) -{ - //DBG("%s>>>>>>>>>>>>>\n",__func__); - - struct i2c_client *client = to_i2c_client(dev); - struct rock_rtc *rk_rtc = i2c_get_clientdata(client); - u8 alarmreg[M41T62_ALARM_REG_SIZE ]; // all alarm regs and flags - int ret = 0; - - - mutex_lock(&rk_rtc->mutex); - m41t62_i2c_read_regs(client,M41T62_REG_ALARM_MON,alarmreg, M41T62_ALARM_REG_SIZE); - mutex_unlock(&rk_rtc->mutex); - - //printk("read alarm mon=0x%x, day=0x%x, hour=0x%x, min=0x%x, sec=0x%x, flags=0x%x\n", - // reg[M41T62_REG_ALARM_MON], - // reg[M41T62_REG_ALARM_DAY], - // reg[M41T62_REG_ALARM_HOUR], - // reg[M41T62_REG_ALARM_MIN], - // reg[M41T62_REG_ALARM_SEC], - // reg[M41T62_REG_FLAGS]); - t->time.tm_sec = -1; - t->time.tm_min = -1; - t->time.tm_hour = -1; - t->time.tm_mday = -1; - t->time.tm_mon = -1; - if (!(alarmreg[M41T62_REG_ALARM_SEC_INDEX] & 0x80)) - t->time.tm_sec = bcd2bin(alarmreg[M41T62_REG_ALARM_SEC_INDEX] & 0x7f); - if (!(alarmreg[M41T62_REG_ALARM_MIN_INDEX] & 0x80)) - t->time.tm_min = bcd2bin(alarmreg[M41T62_REG_ALARM_MIN_INDEX] & 0x7f); - if (!(alarmreg[M41T62_REG_ALARM_HOUR_INDEX] & 0x80)) - t->time.tm_hour = bcd2bin(alarmreg[M41T62_REG_ALARM_HOUR_INDEX] & 0x3f); - if (!(alarmreg[M41T62_REG_ALARM_DAY_INDEX] & 0x80)) - t->time.tm_mday = bcd2bin(alarmreg[M41T62_REG_ALARM_DAY_INDEX] & 0x3f); - if (!(alarmreg[M41T62_REG_ALARM_DAY_INDEX] & 0x40)) - t->time.tm_mon = bcd2bin(alarmreg[M41T62_REG_ALARM_MON_INDEX] & 0x1f) - 1; - t->time.tm_year = -1; - t->time.tm_wday = -1; - t->time.tm_yday = -1; - t->time.tm_isdst = -1; - t->enabled = !!(alarmreg[M41T62_REG_ALARM_MON_INDEX] & M41T62_ALMON_AFE); - t->pending = !!(alarmreg[M41T62_REG_FLAGS_INDEX] & M41T62_FLAGS_AF); - - - mutex_lock(&rk_rtc->mutex); - ret = m41t62_i2c_read_regs(client,M41T62_REG_ALARM_MON,alarmreg, M41T62_ALARM_REG_SIZE ); - if(ret < 0) - { - printk(KERN_INFO "%s:read rtc m41t62 alarm error\n",__func__); - } - else - { - ret = 0; - } - mutex_unlock(&rk_rtc->mutex); - //printk("read alarm2 mon=0x%x, day=0x%x, hour=0x%x, min=0x%x, sec=0x%x, flags=0x%x\n", - // reg[M41T62_REG_ALARM_MON], - // reg[M41T62_REG_ALARM_DAY], - // reg[M41T62_REG_ALARM_HOUR], - // reg[M41T62_REG_ALARM_MIN], - // reg[M41T62_REG_ALARM_SEC], - // reg[M41T62_REG_FLAGS]); - - - return ret; -} - -static void rockrtc_work_func(struct work_struct *work) -{ - struct rock_rtc *rk_rtc = container_of(work, struct rock_rtc, work); - struct i2c_client *client = rk_rtc->client; - struct rtc_time now; - u8 flagreg; - - DBG("enter %s\n",__func__); - - mutex_lock(&rk_rtc->mutex); - m41t62_i2c_read_regs(client,M41T62_REG_FLAGS,&flagreg, 1 ); - flagreg &=~M41T62_FLAGS_AF ; - m41t62_i2c_set_regs(client,M41T62_REG_FLAGS,&flagreg, 1 ); - mutex_unlock(&rk_rtc->mutex); - - m41t62_get_datetime(client ,&now); - mutex_lock(&rk_rtc->mutex); - if (rk_rtc->alarm.enabled && rk_rtc->alarm.time.tm_sec > now.tm_sec) - { - long timeout = rk_rtc->alarm.time.tm_sec - now.tm_sec + 1; - pr_info("stay awake %lds\n", timeout); - wake_lock_timeout(&rk_rtc->wake_lock, timeout * HZ); - } - if (!rk_rtc->exiting) - enable_irq(rk_rtc->irq); - mutex_unlock(&rk_rtc->mutex); -} - - -static struct rtc_class_ops m41t62_rtc_ops = { - .read_time = m41t62_rtc_read_time, - .set_time = m41t62_rtc_set_time, - .read_alarm = m41t62_rtc_read_alarm, - .set_alarm = m41t62_rtc_set_alarm, - .ioctl = m41t62_rtc_ioctl, -}; - -#if defined(CONFIG_RTC_INTF_SYSFS) || defined(CONFIG_RTC_INTF_SYSFS_MODULE) -static ssize_t m41t62_sysfs_show_flags(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct i2c_client *client = to_i2c_client(dev); - int val; - - val = i2c_smbus_read_byte_data(client, M41T62_REG_FLAGS); - if (val < 0) - return -EIO; - return sprintf(buf, "%#x\n", val); -} -static DEVICE_ATTR(flags, S_IRUGO, m41t62_sysfs_show_flags, NULL); - -static ssize_t m41t62_sysfs_show_sqwfreq(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct i2c_client *client = to_i2c_client(dev); - int val; - - val = i2c_smbus_read_byte_data(client, M41T62_REG_SQW); - if (val < 0) - return -EIO; - val = (val >> 4) & 0xf; - switch (val) { - case 0: - break; - case 1: - val = 32768; - break; - default: - val = 32768 >> val; - } - return sprintf(buf, "%d\n", val); -} -static ssize_t m41t62_sysfs_set_sqwfreq(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct i2c_client *client = to_i2c_client(dev); - int almon, sqw; - int val = simple_strtoul(buf, NULL, 0); - - if (val) { - if (!is_power_of_2(val)) - return -EINVAL; - val = ilog2(val); - if (val == 15) - val = 1; - else if (val < 14) - val = 15 - val; - else - return -EINVAL; - } - /* disable SQW, set SQW frequency & re-enable */ - almon = i2c_smbus_read_byte_data(client, M41T62_REG_ALARM_MON); - if (almon < 0) - return -EIO; - sqw = i2c_smbus_read_byte_data(client, M41T62_REG_SQW); - if (sqw < 0) - return -EIO; - sqw = (sqw & 0x0f) | (val << 4); - if (i2c_smbus_write_byte_data(client, M41T62_REG_ALARM_MON, - almon & ~M41T62_ALMON_SQWE) < 0 || - i2c_smbus_write_byte_data(client, M41T62_REG_SQW, sqw) < 0) - return -EIO; - if (val && i2c_smbus_write_byte_data(client, M41T62_REG_ALARM_MON, - almon | M41T62_ALMON_SQWE) < 0) - return -EIO; - return count; -} -static DEVICE_ATTR(sqwfreq, S_IRUGO | S_IWUSR, - m41t62_sysfs_show_sqwfreq, m41t62_sysfs_set_sqwfreq); - -static struct attribute *attrs[] = { - &dev_attr_flags.attr, - &dev_attr_sqwfreq.attr, - NULL, -}; -static struct attribute_group attr_group = { - .attrs = attrs, -}; - -static int m41t62_sysfs_register(struct device *dev) -{ - DBG("\n@@@@@@@@@@@m41t62_sysfs_register@@@@@@@@@@@@@\n"); - return sysfs_create_group(&dev->kobj, &attr_group); -} -#else -static int m41t62_sysfs_register(struct device *dev) -{ - DBG("\n@@@@@@@@@@@m41t62_sysfs_register@@@@@@@@@@@@@\n"); - return 0; -} -#endif - - - - -/* - ***************************************************************************** - * - * Driver Interface - * - ***************************************************************************** - */ -static int __devinit m41t62_probe(struct i2c_client *client, const struct i2c_device_id *id) -{ - printk("%s>>>>>>>>>>>>>client->flags:%d\n",__func__,client->flags); - int rc = 0; - struct rock_rtc *rk_rtc = NULL; - struct rtc_device *rtc = NULL; - struct rtc_time tm_read, tm = { - .tm_year = 111, - .tm_mon = 2, - .tm_mday = 7, - .tm_wday = 7, - .tm_hour = 12, - .tm_min = 1, - .tm_sec = 8 - }; - - if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ){ - rc = -ENODEV; - printk("i2c_check_functionality fail\n"); - goto exit; - } - - rk_rtc = kzalloc(sizeof(struct rock_rtc), GFP_KERNEL); - if (!rk_rtc) { - return -ENOMEM; - } - - rtc = rtc_device_register(client->name, &client->dev, - &m41t62_rtc_ops, THIS_MODULE); - if (IS_ERR(rtc)) { - rc = PTR_ERR(rtc); - rtc = NULL; - printk("\nm41t62_probe err3\n"); - goto exit; - } - - rk_rtc->client = client; - rk_rtc->rtc = rtc; - - mutex_init(&rk_rtc->mutex); - wake_lock_init(&rk_rtc->wake_lock, WAKE_LOCK_SUSPEND, "rtc_m41t62"); - INIT_WORK(&rk_rtc->work, rockrtc_work_func); - - i2c_set_clientdata(client, rk_rtc); - - rc = m41t62_sysfs_register(&client->dev); - if (rc) - { - printk("\nm41t62_probe err4\n"); - goto exit; - } - - - m41t62_init_device(client);//0323 - m41t62_get_datetime(client, &tm_read); - if((tm_read.tm_year < 111 ) |(tm_read.tm_year > 120 ) |(tm_read.tm_mon > 11)) - { - m41t62_set_datetime(client, &tm); - printk("%s [%d]run set time \n",__FUNCTION__,__LINE__); - } - - if(gpio_request(client->irq, "rtc gpio")) - { - dev_err(&client->dev, "gpio request fail\n"); - gpio_free(client->irq); - goto exit; - } - - rk_rtc->irq = gpio_to_irq(client->irq); - gpio_pull_updown(client->irq,GPIOPullUp); - if (request_irq(rk_rtc->irq, rtc_wakeup_irq, IRQF_TRIGGER_FALLING, client->dev.driver->name, rk_rtc) < 0) - { - printk("unable to request rtc irq\n"); - goto exit; - } - enable_irq_wake(rk_rtc->irq); - - return 0; - -exit: - if (rtc) - rtc_device_unregister(rtc); - if (rk_rtc) - kfree(rk_rtc); - return rc; - -} - - - -static int __devexit m41t62_remove(struct i2c_client *client) -{ - - struct rock_rtc *rk_rtc = i2c_get_clientdata(client); - - if (rk_rtc->irq > 0) { - mutex_lock(&rk_rtc->mutex); - rk_rtc->exiting = 1; - mutex_unlock(&rk_rtc->mutex); - - free_irq(rk_rtc->irq, rk_rtc); - cancel_work_sync(&rk_rtc->work); - } - - rtc_device_unregister(rk_rtc->rtc); - wake_lock_destroy(&rk_rtc->wake_lock); - kfree(rk_rtc); - rk_rtc = NULL; - - return 0; -} - -static const struct i2c_device_id m41t62_id[] = { - { DRV_NAME, 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, m41t62_id); - - -static struct i2c_driver m41t62_driver = { - .driver = { - .name = DRV_NAME, - .owner = THIS_MODULE, - }, - .probe = m41t62_probe, - .remove = __devexit_p(m41t62_remove), - .id_table = m41t62_id, - -}; - - -static int __init m41t62_rtc_init(void) -{ - int ret; - - printk("%s\n",__func__); - ret = i2c_add_driver(&m41t62_driver); - printk("%s:return = %d\n",__func__,ret); - return ret; -} - -static void __exit m41t62_rtc_exit(void) -{ - DBG("%s>>>>>>>>>\n",__func__); - i2c_del_driver(&m41t62_driver); -} - -MODULE_AUTHOR("rockchip lhh"); -MODULE_DESCRIPTION("ST Microelectronics M41T62 series RTC I2C Client Driver"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION); - -module_init(m41t62_rtc_init); -module_exit(m41t62_rtc_exit);