diff options
Diffstat (limited to 'drivers/rtc/rtc-pcf8563.c')
| -rw-r--r-- | drivers/rtc/rtc-pcf8563.c | 82 |
1 files changed, 12 insertions, 70 deletions
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c index 748a502a6355..b725913ccbe8 100644 --- a/drivers/rtc/rtc-pcf8563.c +++ b/drivers/rtc/rtc-pcf8563.c @@ -97,13 +97,13 @@ static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm) buf[8]); - tm->tm_sec = BCD2BIN(buf[PCF8563_REG_SC] & 0x7F); - tm->tm_min = BCD2BIN(buf[PCF8563_REG_MN] & 0x7F); - tm->tm_hour = BCD2BIN(buf[PCF8563_REG_HR] & 0x3F); /* rtc hr 0-23 */ - tm->tm_mday = BCD2BIN(buf[PCF8563_REG_DM] & 0x3F); + tm->tm_sec = bcd2bin(buf[PCF8563_REG_SC] & 0x7F); + tm->tm_min = bcd2bin(buf[PCF8563_REG_MN] & 0x7F); + tm->tm_hour = bcd2bin(buf[PCF8563_REG_HR] & 0x3F); /* rtc hr 0-23 */ + tm->tm_mday = bcd2bin(buf[PCF8563_REG_DM] & 0x3F); tm->tm_wday = buf[PCF8563_REG_DW] & 0x07; - tm->tm_mon = BCD2BIN(buf[PCF8563_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */ - tm->tm_year = BCD2BIN(buf[PCF8563_REG_YR]); + tm->tm_mon = bcd2bin(buf[PCF8563_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */ + tm->tm_year = bcd2bin(buf[PCF8563_REG_YR]); if (tm->tm_year < 70) tm->tm_year += 100; /* assume we are in 1970...2069 */ /* detect the polarity heuristically. see note above. */ @@ -138,17 +138,17 @@ static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm) tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); /* hours, minutes and seconds */ - buf[PCF8563_REG_SC] = BIN2BCD(tm->tm_sec); - buf[PCF8563_REG_MN] = BIN2BCD(tm->tm_min); - buf[PCF8563_REG_HR] = BIN2BCD(tm->tm_hour); + buf[PCF8563_REG_SC] = bin2bcd(tm->tm_sec); + buf[PCF8563_REG_MN] = bin2bcd(tm->tm_min); + buf[PCF8563_REG_HR] = bin2bcd(tm->tm_hour); - buf[PCF8563_REG_DM] = BIN2BCD(tm->tm_mday); + buf[PCF8563_REG_DM] = bin2bcd(tm->tm_mday); /* month, 1 - 12 */ - buf[PCF8563_REG_MO] = BIN2BCD(tm->tm_mon + 1); + buf[PCF8563_REG_MO] = bin2bcd(tm->tm_mon + 1); /* year and century */ - buf[PCF8563_REG_YR] = BIN2BCD(tm->tm_year % 100); + buf[PCF8563_REG_YR] = bin2bcd(tm->tm_year % 100); if (pcf8563->c_polarity ? (tm->tm_year >= 100) : (tm->tm_year < 100)) buf[PCF8563_REG_MO] |= PCF8563_MO_C; @@ -179,58 +179,6 @@ struct pcf8563_limit unsigned char max; }; -static int pcf8563_validate_client(struct i2c_client *client) -{ - int i; - - static const struct pcf8563_limit pattern[] = { - /* register, mask, min, max */ - { PCF8563_REG_SC, 0x7F, 0, 59 }, - { PCF8563_REG_MN, 0x7F, 0, 59 }, - { PCF8563_REG_HR, 0x3F, 0, 23 }, - { PCF8563_REG_DM, 0x3F, 0, 31 }, - { PCF8563_REG_MO, 0x1F, 0, 12 }, - }; - - /* check limits (only registers with bcd values) */ - for (i = 0; i < ARRAY_SIZE(pattern); i++) { - int xfer; - unsigned char value; - unsigned char buf = pattern[i].reg; - - struct i2c_msg msgs[] = { - { client->addr, 0, 1, &buf }, - { client->addr, I2C_M_RD, 1, &buf }, - }; - - xfer = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); - - if (xfer != ARRAY_SIZE(msgs)) { - dev_err(&client->dev, - "%s: could not read register 0x%02X\n", - __func__, pattern[i].reg); - - return -EIO; - } - - value = BCD2BIN(buf & pattern[i].mask); - - if (value > pattern[i].max || - value < pattern[i].min) { - dev_dbg(&client->dev, - "%s: pattern=%d, reg=%x, mask=0x%02x, min=%d, " - "max=%d, value=%d, raw=0x%02X\n", - __func__, i, pattern[i].reg, pattern[i].mask, - pattern[i].min, pattern[i].max, - value, buf); - - return -ENODEV; - } - } - - return 0; -} - static int pcf8563_rtc_read_time(struct device *dev, struct rtc_time *tm) { return pcf8563_get_datetime(to_i2c_client(dev), tm); @@ -262,12 +210,6 @@ static int pcf8563_probe(struct i2c_client *client, if (!pcf8563) return -ENOMEM; - /* Verify the chip is really an PCF8563 */ - if (pcf8563_validate_client(client) < 0) { - err = -ENODEV; - goto exit_kfree; - } - dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n"); pcf8563->rtc = rtc_device_register(pcf8563_driver.driver.name, |