diff options
| author | Johan Hovold <johan+linaro@kernel.org> | 2023-02-02 16:54:33 +0100 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2023-02-09 23:23:44 +0100 |
| commit | 79dd75661e4284169768859012a4bf6898cef758 (patch) | |
| tree | 369b8427ea52210c978547ce0911013076451913 /drivers/rtc/rtc-pm8xxx.c | |
| parent | f081b74c1c748a7da972c782c2f974f239a9b51f (diff) | |
| download | linux-79dd75661e4284169768859012a4bf6898cef758.tar.gz | |
rtc: pm8xxx: use unaligned le32 helpers
Use the unaligned le32 helpers instead of open coding when accessing the
time and alarm registers.
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: David Collins <quic_collinsd@quicinc.com>
Link: https://lore.kernel.org/r/20230202155448.6715-8-johan+linaro@kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/rtc-pm8xxx.c')
| -rw-r--r-- | drivers/rtc/rtc-pm8xxx.c | 26 |
1 files changed, 8 insertions, 18 deletions
diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c index 90027a7cfb128..5ff6898bcacec 100644 --- a/drivers/rtc/rtc-pm8xxx.c +++ b/drivers/rtc/rtc-pm8xxx.c @@ -12,6 +12,8 @@ #include <linux/slab.h> #include <linux/spinlock.h> +#include <asm/unaligned.h> + /* RTC_CTRL register bit fields */ #define PM8xxx_RTC_ENABLE BIT(7) #define PM8xxx_RTC_ALARM_CLEAR BIT(0) @@ -68,25 +70,21 @@ struct pm8xxx_rtc { */ static int pm8xxx_rtc_set_time(struct device *dev, struct rtc_time *tm) { - int rc, i; struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev); const struct pm8xxx_rtc_regs *regs = rtc_dd->regs; u8 value[NUM_8_BIT_RTC_REGS]; bool alarm_enabled; unsigned long secs; + int rc; if (!rtc_dd->allow_set_time) return -ENODEV; secs = rtc_tm_to_time64(tm); + put_unaligned_le32(secs, value); dev_dbg(dev, "Seconds value to be written to RTC = %lu\n", secs); - for (i = 0; i < NUM_8_BIT_RTC_REGS; i++) { - value[i] = secs & 0xFF; - secs >>= 8; - } - rc = regmap_update_bits_check(rtc_dd->regmap, regs->alarm_ctrl, regs->alarm_en, 0, &alarm_enabled); if (rc) @@ -157,9 +155,7 @@ static int pm8xxx_rtc_read_time(struct device *dev, struct rtc_time *tm) return rc; } - secs = value[0] | (value[1] << 8) | (value[2] << 16) | - ((unsigned long)value[3] << 24); - + secs = get_unaligned_le32(value); rtc_time64_to_tm(secs, tm); dev_dbg(dev, "secs = %lu, h:m:s == %ptRt, y-m-d = %ptRdr\n", secs, tm, tm); @@ -169,18 +165,14 @@ static int pm8xxx_rtc_read_time(struct device *dev, struct rtc_time *tm) static int pm8xxx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) { - int rc, i; u8 value[NUM_8_BIT_RTC_REGS]; struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev); const struct pm8xxx_rtc_regs *regs = rtc_dd->regs; unsigned long secs; + int rc; secs = rtc_tm_to_time64(&alarm->time); - - for (i = 0; i < NUM_8_BIT_RTC_REGS; i++) { - value[i] = secs & 0xFF; - secs >>= 8; - } + put_unaligned_le32(secs, value); rc = regmap_update_bits(rtc_dd->regmap, regs->alarm_ctrl, regs->alarm_en, 0); @@ -219,9 +211,7 @@ static int pm8xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) if (rc) return rc; - secs = value[0] | (value[1] << 8) | (value[2] << 16) | - ((unsigned long)value[3] << 24); - + secs = get_unaligned_le32(value); rtc_time64_to_tm(secs, &alarm->time); rc = regmap_read(rtc_dd->regmap, regs->alarm_ctrl, &ctrl_reg); |