diff options
author | Heiner Kallweit <hkallweit1@gmail.com> | 2017-06-05 17:57:29 +0200 |
---|---|---|
committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2017-07-05 23:12:34 +0200 |
commit | 078f3f6452c8be74fd406733f99f2cb0d9c50efc (patch) | |
tree | 68bccefc767ca5b2c5da3b0735c4c4ebbdf11743 /drivers/rtc | |
parent | c4f07ecee22ec720936eb58e7c63b89a1e86bf32 (diff) | |
download | op-kernel-dev-078f3f6452c8be74fd406733f99f2cb0d9c50efc.zip op-kernel-dev-078f3f6452c8be74fd406733f99f2cb0d9c50efc.tar.gz |
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>
Diffstat (limited to 'drivers/rtc')
-rw-r--r-- | drivers/rtc/rtc-ds1307.c | 82 |
1 files changed, 20 insertions, 62 deletions
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index 3cbb763..9b4106a 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -297,7 +297,7 @@ static irqreturn_t ds1307_irq(int irq, void *dev_id) { struct ds1307 *ds1307 = dev_id; struct mutex *lock = &ds1307->rtc->ops_lock; - int stat, control, ret; + int stat, ret; mutex_lock(lock); ret = regmap_read(ds1307->regmap, DS1337_REG_STATUS, &stat); @@ -308,13 +308,11 @@ static irqreturn_t ds1307_irq(int irq, void *dev_id) stat &= ~DS1337_BIT_A1I; regmap_write(ds1307->regmap, DS1337_REG_STATUS, stat); - ret = regmap_read(ds1307->regmap, DS1337_REG_CONTROL, &control); + ret = regmap_update_bits(ds1307->regmap, DS1337_REG_CONTROL, + DS1337_BIT_A1IE, 0); if (ret) goto out; - control &= ~DS1337_BIT_A1IE; - regmap_write(ds1307->regmap, DS1337_REG_CONTROL, control); - rtc_update_irq(ds1307->rtc, 1, RTC_AF | RTC_IRQF); } @@ -567,21 +565,13 @@ static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t) static int ds1307_alarm_irq_enable(struct device *dev, unsigned int enabled) { struct ds1307 *ds1307 = dev_get_drvdata(dev); - int control, ret; if (!test_bit(HAS_ALARM, &ds1307->flags)) return -ENOTTY; - ret = regmap_read(ds1307->regmap, DS1337_REG_CONTROL, &control); - if (ret) - return ret; - - if (enabled) - control |= DS1337_BIT_A1IE; - else - control &= ~DS1337_BIT_A1IE; - - return regmap_write(ds1307->regmap, DS1337_REG_CONTROL, control); + return regmap_update_bits(ds1307->regmap, DS1337_REG_CONTROL, + DS1337_BIT_A1IE, + enabled ? DS1337_BIT_A1IE : 0); } static const struct rtc_class_ops ds13xx_rtc_ops = { @@ -795,11 +785,8 @@ static irqreturn_t mcp794xx_irq(int irq, void *dev_id) goto out; /* Disable alarm 0. */ - ret = regmap_read(ds1307->regmap, MCP794XX_REG_CONTROL, ®); - if (ret) - goto out; - reg &= ~MCP794XX_BIT_ALM0_EN; - ret = regmap_write(ds1307->regmap, MCP794XX_REG_CONTROL, reg); + ret = regmap_update_bits(ds1307->regmap, MCP794XX_REG_CONTROL, + MCP794XX_BIT_ALM0_EN, 0); if (ret) goto out; @@ -897,21 +884,13 @@ static int mcp794xx_set_alarm(struct device *dev, struct rtc_wkalrm *t) static int mcp794xx_alarm_irq_enable(struct device *dev, unsigned int enabled) { struct ds1307 *ds1307 = dev_get_drvdata(dev); - int reg, ret; if (!test_bit(HAS_ALARM, &ds1307->flags)) return -EINVAL; - ret = regmap_read(ds1307->regmap, MCP794XX_REG_CONTROL, ®); - if (ret) - return ret; - - if (enabled) - reg |= MCP794XX_BIT_ALM0_EN; - else - reg &= ~MCP794XX_BIT_ALM0_EN; - - return regmap_write(ds1307->regmap, MCP794XX_REG_CONTROL, reg); + return regmap_update_bits(ds1307->regmap, MCP794XX_REG_CONTROL, + MCP794XX_BIT_ALM0_EN, + enabled ? MCP794XX_BIT_ALM0_EN : 0); } static const struct rtc_class_ops mcp794xx_rtc_ops = { @@ -1114,20 +1093,11 @@ static int ds3231_clk_sqw_rates[] = { static int ds1337_write_control(struct ds1307 *ds1307, u8 mask, u8 value) { struct mutex *lock = &ds1307->rtc->ops_lock; - int control; int ret; mutex_lock(lock); - - ret = regmap_read(ds1307->regmap, DS1337_REG_CONTROL, &control); - if (ret) - goto out; - - control &= ~mask; - control |= value; - - ret = regmap_write(ds1307->regmap, DS1337_REG_CONTROL, control); -out: + ret = regmap_update_bits(ds1307->regmap, DS1337_REG_CONTROL, + mask, value); mutex_unlock(lock); return ret; @@ -1233,22 +1203,12 @@ static unsigned long ds3231_clk_32khz_recalc_rate(struct clk_hw *hw, static int ds3231_clk_32khz_control(struct ds1307 *ds1307, bool enable) { struct mutex *lock = &ds1307->rtc->ops_lock; - int status; int ret; mutex_lock(lock); - - ret = regmap_read(ds1307->regmap, DS1337_REG_STATUS, &status); - if (ret) - goto out; - - if (enable) - status |= DS3231_BIT_EN32KHZ; - else - status &= ~DS3231_BIT_EN32KHZ; - - ret = regmap_write(ds1307->regmap, DS1337_REG_STATUS, status); -out: + ret = regmap_update_bits(ds1307->regmap, DS1337_REG_STATUS, + DS3231_BIT_EN32KHZ, + enable ? DS3231_BIT_EN32KHZ : 0); mutex_unlock(lock); return ret; @@ -1712,12 +1672,10 @@ read_rtc: * If different then set the wday which we computed using * timestamp */ - if (wday != tm.tm_wday) { - regmap_read(ds1307->regmap, MCP794XX_REG_WEEKDAY, &wday); - wday = wday & ~MCP794XX_REG_WEEKDAY_WDAY_MASK; - wday = wday | (tm.tm_wday + 1); - regmap_write(ds1307->regmap, MCP794XX_REG_WEEKDAY, wday); - } + if (wday != tm.tm_wday) + regmap_update_bits(ds1307->regmap, MCP794XX_REG_WEEKDAY, + MCP794XX_REG_WEEKDAY_WDAY_MASK, + tm.tm_wday + 1); if (want_irq) { device_set_wakeup_capable(ds1307->dev, true); |