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rtc: rv3029: fix alarm support

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The RTC RV3029 handles different types of alarms : seconds, minutes, ...
These alarms can be enabled or disabled individually using an AE_x bit
which is the last bit (BIT(7)) on each alarm registers.

To prepare the alarm IRQ support, the current code enables all the alarm
types by setting each AE_x to 1.
It also fixes others alarms issues :
   - month and weekday errors : it was performing -1 instead of +1.
   - wrong use of bit mask with bin2bcd

Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
Mylène Josserand 2016-05-03 11:54:36 +02:00 committed by Alexandre Belloni
parent abe2f551ef
commit dc492e866a
1 changed files with 16 additions and 7 deletions
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23
drivers/rtc/rtc-rv3029c2.c
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@ -76,6 +76,7 @@
#define RV3029_A_DW 0x14
#define RV3029_A_MO 0x15
#define RV3029_A_YR 0x16
#define RV3029_A_AE_X BIT(7)
#define RV3029_ALARM_SECTION_LEN 0x07
/* timer section */
@ -436,14 +437,22 @@ static int rv3029_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
dev_err(dev, "%s: reading SR failed\n", __func__);
return -EIO;
}
regs[RV3029_A_SC - RV3029_A_SC] = bin2bcd(tm->tm_sec & 0x7f);
regs[RV3029_A_MN - RV3029_A_SC] = bin2bcd(tm->tm_min & 0x7f);
regs[RV3029_A_HR - RV3029_A_SC] = bin2bcd(tm->tm_hour & 0x3f);
regs[RV3029_A_DT - RV3029_A_SC] = bin2bcd(tm->tm_mday & 0x3f);
regs[RV3029_A_MO - RV3029_A_SC] = bin2bcd((tm->tm_mon & 0x1f) - 1);
regs[RV3029_A_DW - RV3029_A_SC] = bin2bcd((tm->tm_wday & 7) - 1);
regs[RV3029_A_YR - RV3029_A_SC] = bin2bcd((tm->tm_year & 0x7f) - 100);
/* Activate all the alarms with AE_x bit */
regs[RV3029_A_SC - RV3029_A_SC] = bin2bcd(tm->tm_sec) | RV3029_A_AE_X;
regs[RV3029_A_MN - RV3029_A_SC] = bin2bcd(tm->tm_min) | RV3029_A_AE_X;
regs[RV3029_A_HR - RV3029_A_SC] = (bin2bcd(tm->tm_hour) & 0x3f)
| RV3029_A_AE_X;
regs[RV3029_A_DT - RV3029_A_SC] = (bin2bcd(tm->tm_mday) & 0x3f)
| RV3029_A_AE_X;
regs[RV3029_A_MO - RV3029_A_SC] = (bin2bcd(tm->tm_mon + 1) & 0x1f)
| RV3029_A_AE_X;
regs[RV3029_A_DW - RV3029_A_SC] = (bin2bcd(tm->tm_wday + 1) & 0x7)
| RV3029_A_AE_X;
regs[RV3029_A_YR - RV3029_A_SC] = (bin2bcd(tm->tm_year - 100))
| RV3029_A_AE_X;
/* Write the alarm */
ret = rv3029_write_regs(dev, RV3029_A_SC, regs,
RV3029_ALARM_SECTION_LEN);
if (ret < 0)