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rtc: ds1307: remove regs member
ds1307->regs is never used before being read or initialized locally. There is no point in keeping a copy in memory. Also limit the size of the read buffer to what is really used, rename buf to regs for consistency and use sizeof() where possible. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
Alexandre Belloni
parent
ae930c912b
commit
042fa8c7c0
@ -116,7 +116,6 @@ enum ds_type {
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struct ds1307 {
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u8 regs[11];
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struct nvmem_config nvmem_cfg;
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enum ds_type type;
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unsigned long flags;
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@ -397,34 +396,36 @@ static int ds1307_get_time(struct device *dev, struct rtc_time *t)
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struct ds1307 *ds1307 = dev_get_drvdata(dev);
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int tmp, ret;
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const struct chip_desc *chip = &chips[ds1307->type];
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u8 regs[7];
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/* read the RTC date and time registers all at once */
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ret = regmap_bulk_read(ds1307->regmap, chip->offset, ds1307->regs, 7);
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ret = regmap_bulk_read(ds1307->regmap, chip->offset, regs,
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sizeof(regs));
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if (ret) {
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dev_err(dev, "%s error %d\n", "read", ret);
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return ret;
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}
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dev_dbg(dev, "%s: %7ph\n", "read", ds1307->regs);
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dev_dbg(dev, "%s: %7ph\n", "read", regs);
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/* if oscillator fail bit is set, no data can be trusted */
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if (ds1307->type == m41t0 &&
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ds1307->regs[DS1307_REG_MIN] & M41T0_BIT_OF) {
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regs[DS1307_REG_MIN] & M41T0_BIT_OF) {
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dev_warn_once(dev, "oscillator failed, set time!\n");
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return -EINVAL;
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}
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t->tm_sec = bcd2bin(ds1307->regs[DS1307_REG_SECS] & 0x7f);
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t->tm_min = bcd2bin(ds1307->regs[DS1307_REG_MIN] & 0x7f);
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tmp = ds1307->regs[DS1307_REG_HOUR] & 0x3f;
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t->tm_sec = bcd2bin(regs[DS1307_REG_SECS] & 0x7f);
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t->tm_min = bcd2bin(regs[DS1307_REG_MIN] & 0x7f);
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tmp = regs[DS1307_REG_HOUR] & 0x3f;
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t->tm_hour = bcd2bin(tmp);
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t->tm_wday = bcd2bin(ds1307->regs[DS1307_REG_WDAY] & 0x07) - 1;
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t->tm_mday = bcd2bin(ds1307->regs[DS1307_REG_MDAY] & 0x3f);
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tmp = ds1307->regs[DS1307_REG_MONTH] & 0x1f;
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t->tm_wday = bcd2bin(regs[DS1307_REG_WDAY] & 0x07) - 1;
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t->tm_mday = bcd2bin(regs[DS1307_REG_MDAY] & 0x3f);
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tmp = regs[DS1307_REG_MONTH] & 0x1f;
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t->tm_mon = bcd2bin(tmp) - 1;
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t->tm_year = bcd2bin(ds1307->regs[DS1307_REG_YEAR]) + 100;
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t->tm_year = bcd2bin(regs[DS1307_REG_YEAR]) + 100;
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if (ds1307->regs[chip->century_reg] & chip->century_bit &&
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if (regs[chip->century_reg] & chip->century_bit &&
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IS_ENABLED(CONFIG_RTC_DRV_DS1307_CENTURY))
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t->tm_year += 100;
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@ -444,7 +445,7 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t)
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const struct chip_desc *chip = &chips[ds1307->type];
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int result;
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int tmp;
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u8 *buf = ds1307->regs;
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u8 regs[7];
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dev_dbg(dev, "%s secs=%d, mins=%d, "
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"hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",
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@ -463,35 +464,36 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t)
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return -EINVAL;
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#endif
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buf[DS1307_REG_SECS] = bin2bcd(t->tm_sec);
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buf[DS1307_REG_MIN] = bin2bcd(t->tm_min);
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buf[DS1307_REG_HOUR] = bin2bcd(t->tm_hour);
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buf[DS1307_REG_WDAY] = bin2bcd(t->tm_wday + 1);
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buf[DS1307_REG_MDAY] = bin2bcd(t->tm_mday);
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buf[DS1307_REG_MONTH] = bin2bcd(t->tm_mon + 1);
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regs[DS1307_REG_SECS] = bin2bcd(t->tm_sec);
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regs[DS1307_REG_MIN] = bin2bcd(t->tm_min);
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regs[DS1307_REG_HOUR] = bin2bcd(t->tm_hour);
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regs[DS1307_REG_WDAY] = bin2bcd(t->tm_wday + 1);
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regs[DS1307_REG_MDAY] = bin2bcd(t->tm_mday);
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regs[DS1307_REG_MONTH] = bin2bcd(t->tm_mon + 1);
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/* assume 20YY not 19YY */
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tmp = t->tm_year - 100;
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buf[DS1307_REG_YEAR] = bin2bcd(tmp);
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regs[DS1307_REG_YEAR] = bin2bcd(tmp);
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if (chip->century_enable_bit)
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buf[chip->century_reg] |= chip->century_enable_bit;
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regs[chip->century_reg] |= chip->century_enable_bit;
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if (t->tm_year > 199 && chip->century_bit)
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buf[chip->century_reg] |= chip->century_bit;
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regs[chip->century_reg] |= chip->century_bit;
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if (ds1307->type == mcp794xx) {
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/*
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* these bits were cleared when preparing the date/time
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* values and need to be set again before writing the
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* buffer out to the device.
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* regsfer out to the device.
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*/
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buf[DS1307_REG_SECS] |= MCP794XX_BIT_ST;
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buf[DS1307_REG_WDAY] |= MCP794XX_BIT_VBATEN;
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regs[DS1307_REG_SECS] |= MCP794XX_BIT_ST;
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regs[DS1307_REG_WDAY] |= MCP794XX_BIT_VBATEN;
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}
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dev_dbg(dev, "%s: %7ph\n", "write", buf);
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dev_dbg(dev, "%s: %7ph\n", "write", regs);
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result = regmap_bulk_write(ds1307->regmap, chip->offset, buf, 7);
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result = regmap_bulk_write(ds1307->regmap, chip->offset, regs,
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sizeof(regs));
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if (result) {
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dev_err(dev, "%s error %d\n", "write", result);
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return result;
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@ -503,33 +505,34 @@ static int ds1337_read_alarm(struct device *dev, struct rtc_wkalrm *t)
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{
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struct ds1307 *ds1307 = dev_get_drvdata(dev);
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int ret;
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u8 regs[9];
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if (!test_bit(HAS_ALARM, &ds1307->flags))
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return -EINVAL;
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/* read all ALARM1, ALARM2, and status registers at once */
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ret = regmap_bulk_read(ds1307->regmap, DS1339_REG_ALARM1_SECS,
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ds1307->regs, 9);
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regs, sizeof(regs));
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if (ret) {
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dev_err(dev, "%s error %d\n", "alarm read", ret);
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return ret;
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}
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dev_dbg(dev, "%s: %4ph, %3ph, %2ph\n", "alarm read",
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&ds1307->regs[0], &ds1307->regs[4], &ds1307->regs[7]);
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®s[0], ®s[4], ®s[7]);
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/*
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* report alarm time (ALARM1); assume 24 hour and day-of-month modes,
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* and that all four fields are checked matches
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*/
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t->time.tm_sec = bcd2bin(ds1307->regs[0] & 0x7f);
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t->time.tm_min = bcd2bin(ds1307->regs[1] & 0x7f);
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t->time.tm_hour = bcd2bin(ds1307->regs[2] & 0x3f);
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t->time.tm_mday = bcd2bin(ds1307->regs[3] & 0x3f);
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t->time.tm_sec = bcd2bin(regs[0] & 0x7f);
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t->time.tm_min = bcd2bin(regs[1] & 0x7f);
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t->time.tm_hour = bcd2bin(regs[2] & 0x3f);
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t->time.tm_mday = bcd2bin(regs[3] & 0x3f);
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/* ... and status */
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t->enabled = !!(ds1307->regs[7] & DS1337_BIT_A1IE);
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t->pending = !!(ds1307->regs[8] & DS1337_BIT_A1I);
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t->enabled = !!(regs[7] & DS1337_BIT_A1IE);
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t->pending = !!(regs[8] & DS1337_BIT_A1I);
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dev_dbg(dev, "%s secs=%d, mins=%d, "
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"hours=%d, mday=%d, enabled=%d, pending=%d\n",
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@ -543,7 +546,7 @@ static int ds1337_read_alarm(struct device *dev, struct rtc_wkalrm *t)
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static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
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{
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struct ds1307 *ds1307 = dev_get_drvdata(dev);
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unsigned char *buf = ds1307->regs;
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unsigned char regs[9];
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u8 control, status;
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int ret;
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@ -557,33 +560,35 @@ static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
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t->enabled, t->pending);
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/* read current status of both alarms and the chip */
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ret = regmap_bulk_read(ds1307->regmap, DS1339_REG_ALARM1_SECS, buf, 9);
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ret = regmap_bulk_read(ds1307->regmap, DS1339_REG_ALARM1_SECS, regs,
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sizeof(regs));
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if (ret) {
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dev_err(dev, "%s error %d\n", "alarm write", ret);
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return ret;
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}
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control = ds1307->regs[7];
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status = ds1307->regs[8];
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control = regs[7];
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status = regs[8];
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dev_dbg(dev, "%s: %4ph, %3ph, %02x %02x\n", "alarm set (old status)",
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&ds1307->regs[0], &ds1307->regs[4], control, status);
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®s[0], ®s[4], control, status);
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/* set ALARM1, using 24 hour and day-of-month modes */
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buf[0] = bin2bcd(t->time.tm_sec);
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buf[1] = bin2bcd(t->time.tm_min);
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buf[2] = bin2bcd(t->time.tm_hour);
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buf[3] = bin2bcd(t->time.tm_mday);
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regs[0] = bin2bcd(t->time.tm_sec);
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regs[1] = bin2bcd(t->time.tm_min);
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regs[2] = bin2bcd(t->time.tm_hour);
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regs[3] = bin2bcd(t->time.tm_mday);
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/* set ALARM2 to non-garbage */
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buf[4] = 0;
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buf[5] = 0;
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buf[6] = 0;
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regs[4] = 0;
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regs[5] = 0;
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regs[6] = 0;
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/* disable alarms */
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buf[7] = control & ~(DS1337_BIT_A1IE | DS1337_BIT_A2IE);
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buf[8] = status & ~(DS1337_BIT_A1I | DS1337_BIT_A2I);
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regs[7] = control & ~(DS1337_BIT_A1IE | DS1337_BIT_A2IE);
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regs[8] = status & ~(DS1337_BIT_A1I | DS1337_BIT_A2I);
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ret = regmap_bulk_write(ds1307->regmap, DS1339_REG_ALARM1_SECS, buf, 9);
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ret = regmap_bulk_write(ds1307->regmap, DS1339_REG_ALARM1_SECS, regs,
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sizeof(regs));
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if (ret) {
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dev_err(dev, "can't set alarm time\n");
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return ret;
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@ -592,8 +597,8 @@ static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
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/* optionally enable ALARM1 */
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if (t->enabled) {
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dev_dbg(dev, "alarm IRQ armed\n");
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buf[7] |= DS1337_BIT_A1IE; /* only ALARM1 is used */
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regmap_write(ds1307->regmap, DS1337_REG_CONTROL, buf[7]);
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regs[7] |= DS1337_BIT_A1IE; /* only ALARM1 is used */
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regmap_write(ds1307->regmap, DS1337_REG_CONTROL, regs[7]);
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}
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return 0;
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@ -830,26 +835,27 @@ out:
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static int mcp794xx_read_alarm(struct device *dev, struct rtc_wkalrm *t)
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{
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struct ds1307 *ds1307 = dev_get_drvdata(dev);
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u8 *regs = ds1307->regs;
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u8 regs[10];
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int ret;
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if (!test_bit(HAS_ALARM, &ds1307->flags))
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return -EINVAL;
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/* Read control and alarm 0 registers. */
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ret = regmap_bulk_read(ds1307->regmap, MCP794XX_REG_CONTROL, regs, 10);
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ret = regmap_bulk_read(ds1307->regmap, MCP794XX_REG_CONTROL, regs,
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sizeof(regs));
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if (ret)
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return ret;
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t->enabled = !!(regs[0] & MCP794XX_BIT_ALM0_EN);
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/* Report alarm 0 time assuming 24-hour and day-of-month modes. */
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t->time.tm_sec = bcd2bin(ds1307->regs[3] & 0x7f);
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t->time.tm_min = bcd2bin(ds1307->regs[4] & 0x7f);
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t->time.tm_hour = bcd2bin(ds1307->regs[5] & 0x3f);
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t->time.tm_wday = bcd2bin(ds1307->regs[6] & 0x7) - 1;
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t->time.tm_mday = bcd2bin(ds1307->regs[7] & 0x3f);
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t->time.tm_mon = bcd2bin(ds1307->regs[8] & 0x1f) - 1;
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t->time.tm_sec = bcd2bin(regs[3] & 0x7f);
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t->time.tm_min = bcd2bin(regs[4] & 0x7f);
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t->time.tm_hour = bcd2bin(regs[5] & 0x3f);
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t->time.tm_wday = bcd2bin(regs[6] & 0x7) - 1;
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t->time.tm_mday = bcd2bin(regs[7] & 0x3f);
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t->time.tm_mon = bcd2bin(regs[8] & 0x1f) - 1;
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t->time.tm_year = -1;
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t->time.tm_yday = -1;
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t->time.tm_isdst = -1;
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@ -858,9 +864,9 @@ static int mcp794xx_read_alarm(struct device *dev, struct rtc_wkalrm *t)
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"enabled=%d polarity=%d irq=%d match=%d\n", __func__,
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t->time.tm_sec, t->time.tm_min, t->time.tm_hour,
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t->time.tm_wday, t->time.tm_mday, t->time.tm_mon, t->enabled,
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!!(ds1307->regs[6] & MCP794XX_BIT_ALMX_POL),
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!!(ds1307->regs[6] & MCP794XX_BIT_ALMX_IF),
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(ds1307->regs[6] & MCP794XX_MSK_ALMX_MATCH) >> 4);
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!!(regs[6] & MCP794XX_BIT_ALMX_POL),
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!!(regs[6] & MCP794XX_BIT_ALMX_IF),
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(regs[6] & MCP794XX_MSK_ALMX_MATCH) >> 4);
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return 0;
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}
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@ -868,7 +874,7 @@ static int mcp794xx_read_alarm(struct device *dev, struct rtc_wkalrm *t)
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static int mcp794xx_set_alarm(struct device *dev, struct rtc_wkalrm *t)
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{
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struct ds1307 *ds1307 = dev_get_drvdata(dev);
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unsigned char *regs = ds1307->regs;
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unsigned char regs[10];
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int ret;
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if (!test_bit(HAS_ALARM, &ds1307->flags))
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@ -881,7 +887,8 @@ static int mcp794xx_set_alarm(struct device *dev, struct rtc_wkalrm *t)
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t->enabled, t->pending);
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/* Read control and alarm 0 registers. */
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ret = regmap_bulk_read(ds1307->regmap, MCP794XX_REG_CONTROL, regs, 10);
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ret = regmap_bulk_read(ds1307->regmap, MCP794XX_REG_CONTROL, regs,
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sizeof(regs));
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if (ret)
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return ret;
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@ -900,7 +907,8 @@ static int mcp794xx_set_alarm(struct device *dev, struct rtc_wkalrm *t)
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/* Disable interrupt. We will not enable until completely programmed */
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regs[0] &= ~MCP794XX_BIT_ALM0_EN;
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ret = regmap_bulk_write(ds1307->regmap, MCP794XX_REG_CONTROL, regs, 10);
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ret = regmap_bulk_write(ds1307->regmap, MCP794XX_REG_CONTROL, regs,
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sizeof(regs));
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if (ret)
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return ret;
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@ -1344,7 +1352,7 @@ static int ds1307_probe(struct i2c_client *client,
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const struct chip_desc *chip;
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bool want_irq;
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bool ds1307_can_wakeup_device = false;
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unsigned char *buf;
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unsigned char regs[8];
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struct ds1307_platform_data *pdata = dev_get_platdata(&client->dev);
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struct rtc_time tm;
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unsigned long timestamp;
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@ -1400,8 +1408,6 @@ static int ds1307_probe(struct i2c_client *client,
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trickle_charger_setup);
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}
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buf = ds1307->regs;
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#ifdef CONFIG_OF
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/*
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* For devices with no IRQ directly connected to the SoC, the RTC chip
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@ -1423,15 +1429,15 @@ static int ds1307_probe(struct i2c_client *client,
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case ds_3231:
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/* get registers that the "rtc" read below won't read... */
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err = regmap_bulk_read(ds1307->regmap, DS1337_REG_CONTROL,
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buf, 2);
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regs, 2);
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if (err) {
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dev_dbg(ds1307->dev, "read error %d\n", err);
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goto exit;
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}
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/* oscillator off? turn it on, so clock can tick. */
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if (ds1307->regs[0] & DS1337_BIT_nEOSC)
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ds1307->regs[0] &= ~DS1337_BIT_nEOSC;
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if (regs[0] & DS1337_BIT_nEOSC)
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regs[0] &= ~DS1337_BIT_nEOSC;
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/*
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* Using IRQ or defined as wakeup-source?
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@ -1440,77 +1446,77 @@ static int ds1307_probe(struct i2c_client *client,
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* running on Vbackup (BBSQI/BBSQW)
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*/
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if (want_irq || ds1307_can_wakeup_device) {
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ds1307->regs[0] |= DS1337_BIT_INTCN | chip->bbsqi_bit;
|
||||
ds1307->regs[0] &= ~(DS1337_BIT_A2IE | DS1337_BIT_A1IE);
|
||||
regs[0] |= DS1337_BIT_INTCN | chip->bbsqi_bit;
|
||||
regs[0] &= ~(DS1337_BIT_A2IE | DS1337_BIT_A1IE);
|
||||
}
|
||||
|
||||
regmap_write(ds1307->regmap, DS1337_REG_CONTROL,
|
||||
ds1307->regs[0]);
|
||||
regs[0]);
|
||||
|
||||
/* oscillator fault? clear flag, and warn */
|
||||
if (ds1307->regs[1] & DS1337_BIT_OSF) {
|
||||
if (regs[1] & DS1337_BIT_OSF) {
|
||||
regmap_write(ds1307->regmap, DS1337_REG_STATUS,
|
||||
ds1307->regs[1] & ~DS1337_BIT_OSF);
|
||||
regs[1] & ~DS1337_BIT_OSF);
|
||||
dev_warn(ds1307->dev, "SET TIME!\n");
|
||||
}
|
||||
break;
|
||||
|
||||
case rx_8025:
|
||||
err = regmap_bulk_read(ds1307->regmap,
|
||||
RX8025_REG_CTRL1 << 4 | 0x08, buf, 2);
|
||||
RX8025_REG_CTRL1 << 4 | 0x08, regs, 2);
|
||||
if (err) {
|
||||
dev_dbg(ds1307->dev, "read error %d\n", err);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/* oscillator off? turn it on, so clock can tick. */
|
||||
if (!(ds1307->regs[1] & RX8025_BIT_XST)) {
|
||||
ds1307->regs[1] |= RX8025_BIT_XST;
|
||||
if (!(regs[1] & RX8025_BIT_XST)) {
|
||||
regs[1] |= RX8025_BIT_XST;
|
||||
regmap_write(ds1307->regmap,
|
||||
RX8025_REG_CTRL2 << 4 | 0x08,
|
||||
ds1307->regs[1]);
|
||||
regs[1]);
|
||||
dev_warn(ds1307->dev,
|
||||
"oscillator stop detected - SET TIME!\n");
|
||||
}
|
||||
|
||||
if (ds1307->regs[1] & RX8025_BIT_PON) {
|
||||
ds1307->regs[1] &= ~RX8025_BIT_PON;
|
||||
if (regs[1] & RX8025_BIT_PON) {
|
||||
regs[1] &= ~RX8025_BIT_PON;
|
||||
regmap_write(ds1307->regmap,
|
||||
RX8025_REG_CTRL2 << 4 | 0x08,
|
||||
ds1307->regs[1]);
|
||||
regs[1]);
|
||||
dev_warn(ds1307->dev, "power-on detected\n");
|
||||
}
|
||||
|
||||
if (ds1307->regs[1] & RX8025_BIT_VDET) {
|
||||
ds1307->regs[1] &= ~RX8025_BIT_VDET;
|
||||
if (regs[1] & RX8025_BIT_VDET) {
|
||||
regs[1] &= ~RX8025_BIT_VDET;
|
||||
regmap_write(ds1307->regmap,
|
||||
RX8025_REG_CTRL2 << 4 | 0x08,
|
||||
ds1307->regs[1]);
|
||||
regs[1]);
|
||||
dev_warn(ds1307->dev, "voltage drop detected\n");
|
||||
}
|
||||
|
||||
/* make sure we are running in 24hour mode */
|
||||
if (!(ds1307->regs[0] & RX8025_BIT_2412)) {
|
||||
if (!(regs[0] & RX8025_BIT_2412)) {
|
||||
u8 hour;
|
||||
|
||||
/* switch to 24 hour mode */
|
||||
regmap_write(ds1307->regmap,
|
||||
RX8025_REG_CTRL1 << 4 | 0x08,
|
||||
ds1307->regs[0] | RX8025_BIT_2412);
|
||||
regs[0] | RX8025_BIT_2412);
|
||||
|
||||
err = regmap_bulk_read(ds1307->regmap,
|
||||
RX8025_REG_CTRL1 << 4 | 0x08,
|
||||
buf, 2);
|
||||
regs, 2);
|
||||
if (err) {
|
||||
dev_dbg(ds1307->dev, "read error %d\n", err);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/* correct hour */
|
||||
hour = bcd2bin(ds1307->regs[DS1307_REG_HOUR]);
|
||||
hour = bcd2bin(regs[DS1307_REG_HOUR]);
|
||||
if (hour == 12)
|
||||
hour = 0;
|
||||
if (ds1307->regs[DS1307_REG_HOUR] & DS1307_BIT_PM)
|
||||
if (regs[DS1307_REG_HOUR] & DS1307_BIT_PM)
|
||||
hour += 12;
|
||||
|
||||
regmap_write(ds1307->regmap,
|
||||
@ -1523,7 +1529,8 @@ static int ds1307_probe(struct i2c_client *client,
|
||||
|
||||
read_rtc:
|
||||
/* read RTC registers */
|
||||
err = regmap_bulk_read(ds1307->regmap, chip->offset, buf, 8);
|
||||
err = regmap_bulk_read(ds1307->regmap, chip->offset, regs,
|
||||
sizeof(regs));
|
||||
if (err) {
|
||||
dev_dbg(ds1307->dev, "read error %d\n", err);
|
||||
goto exit;
|
||||
@ -1534,7 +1541,7 @@ read_rtc:
|
||||
* specify the extra bits as must-be-zero, but there are
|
||||
* still a few values that are clearly out-of-range.
|
||||
*/
|
||||
tmp = ds1307->regs[DS1307_REG_SECS];
|
||||
tmp = regs[DS1307_REG_SECS];
|
||||
switch (ds1307->type) {
|
||||
case ds_1307:
|
||||
case m41t0:
|
||||
@ -1553,9 +1560,9 @@ read_rtc:
|
||||
regmap_write(ds1307->regmap, DS1307_REG_SECS, 0);
|
||||
|
||||
/* oscillator fault? clear flag, and warn */
|
||||
if (ds1307->regs[DS1307_REG_CONTROL] & DS1338_BIT_OSF) {
|
||||
if (regs[DS1307_REG_CONTROL] & DS1338_BIT_OSF) {
|
||||
regmap_write(ds1307->regmap, DS1307_REG_CONTROL,
|
||||
ds1307->regs[DS1307_REG_CONTROL] &
|
||||
regs[DS1307_REG_CONTROL] &
|
||||
~DS1338_BIT_OSF);
|
||||
dev_warn(ds1307->dev, "SET TIME!\n");
|
||||
goto read_rtc;
|
||||
@ -1580,9 +1587,9 @@ read_rtc:
|
||||
break;
|
||||
case mcp794xx:
|
||||
/* make sure that the backup battery is enabled */
|
||||
if (!(ds1307->regs[DS1307_REG_WDAY] & MCP794XX_BIT_VBATEN)) {
|
||||
if (!(regs[DS1307_REG_WDAY] & MCP794XX_BIT_VBATEN)) {
|
||||
regmap_write(ds1307->regmap, DS1307_REG_WDAY,
|
||||
ds1307->regs[DS1307_REG_WDAY] |
|
||||
regs[DS1307_REG_WDAY] |
|
||||
MCP794XX_BIT_VBATEN);
|
||||
}
|
||||
|
||||
@ -1599,7 +1606,7 @@ read_rtc:
|
||||
break;
|
||||
}
|
||||
|
||||
tmp = ds1307->regs[DS1307_REG_HOUR];
|
||||
tmp = regs[DS1307_REG_HOUR];
|
||||
switch (ds1307->type) {
|
||||
case ds_1340:
|
||||
case m41t0:
|
||||
@ -1622,7 +1629,7 @@ read_rtc:
|
||||
tmp = bcd2bin(tmp & 0x1f);
|
||||
if (tmp == 12)
|
||||
tmp = 0;
|
||||
if (ds1307->regs[DS1307_REG_HOUR] & DS1307_BIT_PM)
|
||||
if (regs[DS1307_REG_HOUR] & DS1307_BIT_PM)
|
||||
tmp += 12;
|
||||
regmap_write(ds1307->regmap, chip->offset + DS1307_REG_HOUR,
|
||||
bin2bcd(tmp));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user