diff options
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-ab8500.c | 63 |
1 files changed, 62 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-ab8500.c b/drivers/rtc/rtc-ab8500.c index c5b62d4389ee..727e2f5d14d9 100644 --- a/drivers/rtc/rtc-ab8500.c +++ b/drivers/rtc/rtc-ab8500.c @@ -35,6 +35,10 @@ #define AB8500_RTC_FORCE_BKUP_REG 0x0D #define AB8500_RTC_CALIB_REG 0x0E #define AB8500_RTC_SWITCH_STAT_REG 0x0F +#define AB8540_RTC_ALRM_SEC 0x22 +#define AB8540_RTC_ALRM_MIN_LOW_REG 0x23 +#define AB8540_RTC_ALRM_MIN_MID_REG 0x24 +#define AB8540_RTC_ALRM_MIN_HI_REG 0x25 /* RtcReadRequest bits */ #define RTC_READ_REQUEST 0x01 @@ -58,6 +62,11 @@ static const u8 ab8500_rtc_alarm_regs[] = { AB8500_RTC_ALRM_MIN_LOW_REG }; +static const u8 ab8540_rtc_alarm_regs[] = { + AB8540_RTC_ALRM_MIN_HI_REG, AB8540_RTC_ALRM_MIN_MID_REG, + AB8540_RTC_ALRM_MIN_LOW_REG, AB8540_RTC_ALRM_SEC +}; + /* Calculate the seconds from 1970 to 01-01-2000 00:00:00 */ static unsigned long get_elapsed_seconds(int year) { @@ -267,6 +276,42 @@ static int ab8500_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) return ab8500_rtc_irq_enable(dev, alarm->enabled); } +static int ab8540_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) +{ + int retval, i; + unsigned char buf[ARRAY_SIZE(ab8540_rtc_alarm_regs)]; + unsigned long mins, secs = 0; + + if (alarm->time.tm_year < (AB8500_RTC_EPOCH - 1900)) { + dev_dbg(dev, "year should be equal to or greater than %d\n", + AB8500_RTC_EPOCH); + return -EINVAL; + } + + /* Get the number of seconds since 1970 */ + rtc_tm_to_time(&alarm->time, &secs); + + /* + * Convert it to the number of seconds since 01-01-2000 00:00:00 + */ + secs -= get_elapsed_seconds(AB8500_RTC_EPOCH); + mins = secs / 60; + + buf[3] = secs % 60; + buf[2] = mins & 0xFF; + buf[1] = (mins >> 8) & 0xFF; + buf[0] = (mins >> 16) & 0xFF; + + /* Set the alarm time */ + for (i = 0; i < ARRAY_SIZE(ab8540_rtc_alarm_regs); i++) { + retval = abx500_set_register_interruptible(dev, AB8500_RTC, + ab8540_rtc_alarm_regs[i], buf[i]); + if (retval < 0) + return retval; + } + + return ab8500_rtc_irq_enable(dev, alarm->enabled); +} static int ab8500_rtc_set_calibration(struct device *dev, int calibration) { @@ -389,8 +434,22 @@ static const struct rtc_class_ops ab8500_rtc_ops = { .alarm_irq_enable = ab8500_rtc_irq_enable, }; +static const struct rtc_class_ops ab8540_rtc_ops = { + .read_time = ab8500_rtc_read_time, + .set_time = ab8500_rtc_set_time, + .read_alarm = ab8500_rtc_read_alarm, + .set_alarm = ab8540_rtc_set_alarm, + .alarm_irq_enable = ab8500_rtc_irq_enable, +}; + +static struct platform_device_id ab85xx_rtc_ids[] = { + { "ab8500-rtc", (kernel_ulong_t)&ab8500_rtc_ops, }, + { "ab8540-rtc", (kernel_ulong_t)&ab8540_rtc_ops, }, +}; + static int ab8500_rtc_probe(struct platform_device *pdev) { + const struct platform_device_id *platid = platform_get_device_id(pdev); int err; struct rtc_device *rtc; u8 rtc_ctrl; @@ -423,7 +482,8 @@ static int ab8500_rtc_probe(struct platform_device *pdev) device_init_wakeup(&pdev->dev, true); rtc = devm_rtc_device_register(&pdev->dev, "ab8500-rtc", - &ab8500_rtc_ops, THIS_MODULE); + (struct rtc_class_ops *)platid->driver_data, + THIS_MODULE); if (IS_ERR(rtc)) { dev_err(&pdev->dev, "Registration failed\n"); err = PTR_ERR(rtc); @@ -461,6 +521,7 @@ static struct platform_driver ab8500_rtc_driver = { }, .probe = ab8500_rtc_probe, .remove = ab8500_rtc_remove, + .id_table = ab85xx_rtc_ids, }; module_platform_driver(ab8500_rtc_driver); |