diff options
Diffstat (limited to 'drivers/i2c/chips/rtc8564.c')
| -rw-r--r-- | drivers/i2c/chips/rtc8564.c | 43 |
1 files changed, 20 insertions, 23 deletions
diff --git a/drivers/i2c/chips/rtc8564.c b/drivers/i2c/chips/rtc8564.c index 916cdc1af23..ceaa6b0bdfd 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); @@ -157,7 +155,6 @@ static int rtc8564_attach(struct i2c_adapter *adap, int addr, int kind) strlcpy(new_client->name, "RTC8564", I2C_NAME_SIZE); i2c_set_clientdata(new_client, d); - new_client->flags = I2C_CLIENT_ALLOW_USE; new_client->addr = addr; new_client->adapter = adap; new_client->driver = &rtc8564_driver; @@ -224,16 +221,16 @@ 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 +252,18 @@ 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); @@ -361,10 +358,10 @@ rtc8564_command(struct i2c_client *client, unsigned int cmd, void *arg) } static struct i2c_driver rtc8564_driver = { - .owner = THIS_MODULE, - .name = "RTC8564", + .driver = { + .name = "RTC8564", + }, .id = I2C_DRIVERID_RTC8564, - .flags = I2C_DF_NOTIFY, .attach_adapter = rtc8564_probe, .detach_client = rtc8564_detach, .command = rtc8564_command |