diff options
| -rw-r--r-- | drivers/i2c/chips/rtc8564.c | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/drivers/i2c/chips/rtc8564.c b/drivers/i2c/chips/rtc8564.c index 916cdc1af23c..26e498d921da 100644 --- a/drivers/i2c/chips/rtc8564.c +++ b/drivers/i2c/chips/rtc8564.c @@ -14,6 +14,7 @@ */ #include <linux/module.h> #include <linux/kernel.h> +#include <linux/bcd.h> #include <linux/i2c.h> #include <linux/slab.h> #include <linux/string.h> @@ -52,9 +53,6 @@ static inline u8 _rtc8564_ctrl2(struct i2c_client *client) #define CTRL1(c) _rtc8564_ctrl1(c) #define CTRL2(c) _rtc8564_ctrl2(c) -#define BCD_TO_BIN(val) (((val)&15) + ((val)>>4)*10) -#define BIN_TO_BCD(val) ((((val)/10)<<4) + (val)%10) - static int debug;; module_param(debug, int, S_IRUGO | S_IWUSR); @@ -224,16 +222,16 @@ static int rtc8564_get_datetime(struct i2c_client *client, struct rtc_tm *dt) return ret; /* century stored in minute alarm reg */ - dt->year = BCD_TO_BIN(buf[RTC8564_REG_YEAR]); - dt->year += 100 * BCD_TO_BIN(buf[RTC8564_REG_AL_MIN] & 0x3f); - dt->mday = BCD_TO_BIN(buf[RTC8564_REG_DAY] & 0x3f); - dt->wday = BCD_TO_BIN(buf[RTC8564_REG_WDAY] & 7); - dt->mon = BCD_TO_BIN(buf[RTC8564_REG_MON_CENT] & 0x1f); + 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 = BCD_TO_BIN(buf[RTC8564_REG_SEC] & 0x7f); + dt->secs = BCD2BIN(buf[RTC8564_REG_SEC] & 0x7f); dt->vl = (buf[RTC8564_REG_SEC] & 0x80) == 0x80; - dt->mins = BCD_TO_BIN(buf[RTC8564_REG_MIN] & 0x7f); - dt->hours = BCD_TO_BIN(buf[RTC8564_REG_HR] & 0x3f); + dt->mins = BCD2BIN(buf[RTC8564_REG_MIN] & 0x7f); + dt->hours = BCD2BIN(buf[RTC8564_REG_HR] & 0x3f); _DBGRTCTM(2, *dt); @@ -255,18 +253,18 @@ rtc8564_set_datetime(struct i2c_client *client, struct rtc_tm *dt, int datetoo) buf[RTC8564_REG_CTRL1] = CTRL1(client) | RTC8564_CTRL1_STOP; buf[RTC8564_REG_CTRL2] = CTRL2(client); - buf[RTC8564_REG_SEC] = BIN_TO_BCD(dt->secs); - buf[RTC8564_REG_MIN] = BIN_TO_BCD(dt->mins); - buf[RTC8564_REG_HR] = BIN_TO_BCD(dt->hours); + 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] = BIN_TO_BCD(dt->mday); - buf[RTC8564_REG_WDAY] = BIN_TO_BCD(dt->wday); - buf[RTC8564_REG_MON_CENT] = BIN_TO_BCD(dt->mon) & 0x1f; + 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] = BIN_TO_BCD(dt->year % 100); - buf[RTC8564_REG_AL_MIN] = BIN_TO_BCD(dt->year / 100); + buf[RTC8564_REG_YEAR] = BIN2BCD(dt->year % 100); + buf[RTC8564_REG_AL_MIN] = BIN2BCD(dt->year / 100); } ret = rtc8564_write(client, 0, buf, len); |
