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rtc: ds1307: use regmap_update_bits where applicable
After the switch to regmap we can now make use of regmap_update_bits to simplify read/modify/write ops. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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parent
c4f07ecee2
commit
078f3f6452
1 changed files with 20 additions and 62 deletions
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@ -297,7 +297,7 @@ static irqreturn_t ds1307_irq(int irq, void *dev_id)
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{
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struct ds1307 *ds1307 = dev_id;
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struct mutex *lock = &ds1307->rtc->ops_lock;
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int stat, control, ret;
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int stat, ret;
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mutex_lock(lock);
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ret = regmap_read(ds1307->regmap, DS1337_REG_STATUS, &stat);
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@ -308,13 +308,11 @@ static irqreturn_t ds1307_irq(int irq, void *dev_id)
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stat &= ~DS1337_BIT_A1I;
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regmap_write(ds1307->regmap, DS1337_REG_STATUS, stat);
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ret = regmap_read(ds1307->regmap, DS1337_REG_CONTROL, &control);
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ret = regmap_update_bits(ds1307->regmap, DS1337_REG_CONTROL,
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DS1337_BIT_A1IE, 0);
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if (ret)
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goto out;
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control &= ~DS1337_BIT_A1IE;
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regmap_write(ds1307->regmap, DS1337_REG_CONTROL, control);
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rtc_update_irq(ds1307->rtc, 1, RTC_AF | RTC_IRQF);
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}
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@ -567,21 +565,13 @@ static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
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static int ds1307_alarm_irq_enable(struct device *dev, unsigned int enabled)
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{
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struct ds1307 *ds1307 = dev_get_drvdata(dev);
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int control, ret;
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if (!test_bit(HAS_ALARM, &ds1307->flags))
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return -ENOTTY;
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ret = regmap_read(ds1307->regmap, DS1337_REG_CONTROL, &control);
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if (ret)
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return ret;
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if (enabled)
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control |= DS1337_BIT_A1IE;
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else
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control &= ~DS1337_BIT_A1IE;
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return regmap_write(ds1307->regmap, DS1337_REG_CONTROL, control);
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return regmap_update_bits(ds1307->regmap, DS1337_REG_CONTROL,
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DS1337_BIT_A1IE,
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enabled ? DS1337_BIT_A1IE : 0);
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}
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static const struct rtc_class_ops ds13xx_rtc_ops = {
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@ -795,11 +785,8 @@ static irqreturn_t mcp794xx_irq(int irq, void *dev_id)
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goto out;
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/* Disable alarm 0. */
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ret = regmap_read(ds1307->regmap, MCP794XX_REG_CONTROL, ®);
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if (ret)
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goto out;
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reg &= ~MCP794XX_BIT_ALM0_EN;
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ret = regmap_write(ds1307->regmap, MCP794XX_REG_CONTROL, reg);
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ret = regmap_update_bits(ds1307->regmap, MCP794XX_REG_CONTROL,
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MCP794XX_BIT_ALM0_EN, 0);
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if (ret)
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goto out;
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@ -897,21 +884,13 @@ static int mcp794xx_set_alarm(struct device *dev, struct rtc_wkalrm *t)
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static int mcp794xx_alarm_irq_enable(struct device *dev, unsigned int enabled)
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{
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struct ds1307 *ds1307 = dev_get_drvdata(dev);
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int reg, ret;
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if (!test_bit(HAS_ALARM, &ds1307->flags))
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return -EINVAL;
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ret = regmap_read(ds1307->regmap, MCP794XX_REG_CONTROL, ®);
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if (ret)
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return ret;
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if (enabled)
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reg |= MCP794XX_BIT_ALM0_EN;
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else
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reg &= ~MCP794XX_BIT_ALM0_EN;
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return regmap_write(ds1307->regmap, MCP794XX_REG_CONTROL, reg);
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return regmap_update_bits(ds1307->regmap, MCP794XX_REG_CONTROL,
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MCP794XX_BIT_ALM0_EN,
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enabled ? MCP794XX_BIT_ALM0_EN : 0);
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}
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static const struct rtc_class_ops mcp794xx_rtc_ops = {
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@ -1114,20 +1093,11 @@ static int ds3231_clk_sqw_rates[] = {
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static int ds1337_write_control(struct ds1307 *ds1307, u8 mask, u8 value)
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{
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struct mutex *lock = &ds1307->rtc->ops_lock;
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int control;
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int ret;
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mutex_lock(lock);
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ret = regmap_read(ds1307->regmap, DS1337_REG_CONTROL, &control);
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if (ret)
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goto out;
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control &= ~mask;
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control |= value;
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ret = regmap_write(ds1307->regmap, DS1337_REG_CONTROL, control);
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out:
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ret = regmap_update_bits(ds1307->regmap, DS1337_REG_CONTROL,
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mask, value);
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mutex_unlock(lock);
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return ret;
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@ -1233,22 +1203,12 @@ static unsigned long ds3231_clk_32khz_recalc_rate(struct clk_hw *hw,
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static int ds3231_clk_32khz_control(struct ds1307 *ds1307, bool enable)
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{
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struct mutex *lock = &ds1307->rtc->ops_lock;
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int status;
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int ret;
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mutex_lock(lock);
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ret = regmap_read(ds1307->regmap, DS1337_REG_STATUS, &status);
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if (ret)
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goto out;
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if (enable)
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status |= DS3231_BIT_EN32KHZ;
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else
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status &= ~DS3231_BIT_EN32KHZ;
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ret = regmap_write(ds1307->regmap, DS1337_REG_STATUS, status);
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out:
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ret = regmap_update_bits(ds1307->regmap, DS1337_REG_STATUS,
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DS3231_BIT_EN32KHZ,
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enable ? DS3231_BIT_EN32KHZ : 0);
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mutex_unlock(lock);
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return ret;
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@ -1712,12 +1672,10 @@ static int ds1307_probe(struct i2c_client *client,
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* If different then set the wday which we computed using
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* timestamp
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*/
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if (wday != tm.tm_wday) {
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regmap_read(ds1307->regmap, MCP794XX_REG_WEEKDAY, &wday);
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wday = wday & ~MCP794XX_REG_WEEKDAY_WDAY_MASK;
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wday = wday | (tm.tm_wday + 1);
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regmap_write(ds1307->regmap, MCP794XX_REG_WEEKDAY, wday);
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}
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if (wday != tm.tm_wday)
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regmap_update_bits(ds1307->regmap, MCP794XX_REG_WEEKDAY,
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MCP794XX_REG_WEEKDAY_WDAY_MASK,
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tm.tm_wday + 1);
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if (want_irq) {
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device_set_wakeup_capable(ds1307->dev, true);
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