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rtc: rx8581: remove useless declaration 

The rx8581_driver forward declaration is useless, remove it.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2018-05-17 22:33:29 +02:00
parent 2d2b300b38
commit ed87c6d86d
1 changed files with 15 additions and 18 deletions
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33
drivers/rtc/rtc-rx8581.c
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@ -59,8 +59,6 @@ struct rx8581 {
u8 length, const u8 *values);
};
static struct i2c_driver rx8581_driver;
static int rx8581_read_block_data(const struct i2c_client *client, u8 command,
u8 length, u8 *values)
{
@ -107,7 +105,7 @@ static int rx8581_rtc_read_time(struct device *dev, struct rtc_time *tm)
*/
data = i2c_smbus_read_byte_data(client, RX8581_REG_FLAG);
if (data < 0) {
dev_err(&client->dev, "Unable to read device flags\n");
dev_err(dev, "Unable to read device flags\n");
return -EIO;
}
@ -117,7 +115,7 @@ static int rx8581_rtc_read_time(struct device *dev, struct rtc_time *tm)
err = i2c_smbus_write_byte_data(client,
RX8581_REG_FLAG, (data & ~RX8581_FLAG_UF));
if (err != 0) {
dev_err(&client->dev, "Unable to write device flags\n");
dev_err(dev, "Unable to write device flags\n");
return -EIO;
}
}
@ -126,24 +124,23 @@ static int rx8581_rtc_read_time(struct device *dev, struct rtc_time *tm)
err = rx8581->read_block_data(client, RX8581_REG_SC,
7, date);
if (err < 0) {
dev_err(&client->dev, "Unable to read date\n");
dev_err(dev, "Unable to read date\n");
return -EIO;
}
/* Check flag register */
data = i2c_smbus_read_byte_data(client, RX8581_REG_FLAG);
if (data < 0) {
dev_err(&client->dev, "Unable to read device flags\n");
dev_err(dev, "Unable to read device flags\n");
return -EIO;
}
} while (data & RX8581_FLAG_UF);
if (data & RX8581_FLAG_VLF)
dev_info(&client->dev,
dev_info(dev,
"low voltage detected, date/time is not reliable.\n");
dev_dbg(&client->dev,
"%s: raw data is sec=%02x, min=%02x, hr=%02x, "
dev_dbg(dev, "%s: raw data is sec=%02x, min=%02x, hr=%02x, "
"wday=%02x, mday=%02x, mon=%02x, year=%02x\n",
__func__,
date[0], date[1], date[2], date[3], date[4], date[5], date[6]);
@ -156,7 +153,7 @@ static int rx8581_rtc_read_time(struct device *dev, struct rtc_time *tm)
tm->tm_mon = bcd2bin(date[RX8581_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */
tm->tm_year = bcd2bin(date[RX8581_REG_YR]) + 100;
dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
dev_dbg(dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
"mday=%d, mon=%d, year=%d, wday=%d\n",
__func__,
tm->tm_sec, tm->tm_min, tm->tm_hour,
@ -172,7 +169,7 @@ static int rx8581_rtc_set_time(struct device *dev, struct rtc_time *tm)
unsigned char buf[7];
struct rx8581 *rx8581 = i2c_get_clientdata(client);
dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
dev_dbg(dev, "%s: secs=%d, mins=%d, hours=%d, "
"mday=%d, mon=%d, year=%d, wday=%d\n",
__func__,
tm->tm_sec, tm->tm_min, tm->tm_hour,
@ -195,49 +192,49 @@ static int rx8581_rtc_set_time(struct device *dev, struct rtc_time *tm)
/* Stop the clock */
data = i2c_smbus_read_byte_data(client, RX8581_REG_CTRL);
if (data < 0) {
dev_err(&client->dev, "Unable to read control register\n");
dev_err(dev, "Unable to read control register\n");
return -EIO;
}
err = i2c_smbus_write_byte_data(client, RX8581_REG_CTRL,
(data | RX8581_CTRL_STOP));
if (err < 0) {
dev_err(&client->dev, "Unable to write control register\n");
dev_err(dev, "Unable to write control register\n");
return -EIO;
}
/* write register's data */
err = rx8581->write_block_data(client, RX8581_REG_SC, 7, buf);
if (err < 0) {
dev_err(&client->dev, "Unable to write to date registers\n");
dev_err(dev, "Unable to write to date registers\n");
return -EIO;
}
/* get VLF and clear it */
data = i2c_smbus_read_byte_data(client, RX8581_REG_FLAG);
if (data < 0) {
dev_err(&client->dev, "Unable to read flag register\n");
dev_err(dev, "Unable to read flag register\n");
return -EIO;
}
err = i2c_smbus_write_byte_data(client, RX8581_REG_FLAG,
(data & ~(RX8581_FLAG_VLF)));
if (err != 0) {
dev_err(&client->dev, "Unable to write flag register\n");
dev_err(dev, "Unable to write flag register\n");
return -EIO;
}
/* Restart the clock */
data = i2c_smbus_read_byte_data(client, RX8581_REG_CTRL);
if (data < 0) {
dev_err(&client->dev, "Unable to read control register\n");
dev_err(dev, "Unable to read control register\n");
return -EIO;
}
err = i2c_smbus_write_byte_data(client, RX8581_REG_CTRL,
(data & ~(RX8581_CTRL_STOP)));
if (err != 0) {
dev_err(&client->dev, "Unable to write control register\n");
dev_err(dev, "Unable to write control register\n");
return -EIO;
}