linux-imx
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committed fbb974ba693x
* (Also queueing and other delays before we get this far.) */ return mc146818_set_time(t);}static int cmos_read_alarm(struct device *dev, struct rtc_wkalrm *t){ struct cmos_rtc *cmos = dev_get_drvdata(dev); unsigned char rtc_control; /* This not only a rtc_op, but also called directly */ if (!is_valid_irq(cmos->irq)) return -EIO; /* Basic alarms only support hour, minute, and seconds fields. * Some also support day and month, for alarms up to a year in * the future. */ spin_lock_irq(&rtc_lock); t->time.tm_sec = CMOS_READ(RTC_SECONDS_ALARM); return 0;}static int cmos_set_alarm(struct device *dev, struct rtc_wkalrm *t){ struct cmos_rtc *cmos = dev_get_drvdata(dev); unsigned char mon, mday, hrs, min, sec, rtc_control; int ret; /* This not only a rtc_op, but also called directly */ if (!is_valid_irq(cmos->irq)) return -EIO; ret = cmos_validate_alarm(dev, t); if (ret < 0) return ret; mon = t->time.tm_mon + 1; mday = t->time.tm_mday; hrs = t->time.tm_hour; cmos->alarm_expires = rtc_tm_to_time64(&t->time); return 0;}static int cmos_alarm_irq_enable(struct device *dev, unsigned int enabled){ struct cmos_rtc *cmos = dev_get_drvdata(dev); unsigned long flags; if (!is_valid_irq(cmos->irq)) return -EINVAL; spin_lock_irqsave(&rtc_lock, flags); if (enabled) cmos_irq_enable(cmos, RTC_AIE); else cmos_irq_disable(cmos, RTC_AIE); spin_unlock_irqrestore(&rtc_lock, flags); return 0;}static const struct rtc_class_ops cmos_rtc_ops = { .read_time = cmos_read_time, .set_time = cmos_set_time, .read_alarm = cmos_read_alarm, .set_alarm = cmos_set_alarm, .proc = cmos_procfs, .alarm_irq_enable = cmos_alarm_irq_enable,};static const struct rtc_class_ops cmos_rtc_ops_no_alarm = { .read_time = cmos_read_time, .set_time = cmos_set_time, .proc = cmos_procfs,};/*----------------------------------------------------------------*//* * All these chips have at least 64 bytes of address space, shared by * RTC registers and NVRAM. Most of those bytes of NVRAM are used * by boot firmware. Modern chips have 128 or 256 bytes. */#define NVRAM_OFFSET (RTC_REG_D + 1) } else rtc_cmos_int_handler = cmos_interrupt; retval = request_irq(rtc_irq, rtc_cmos_int_handler, IRQF_SHARED, dev_name(&cmos_rtc.rtc->dev), cmos_rtc.rtc); if (retval < 0) { dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq); goto cleanup1; } cmos_rtc.rtc->ops = &cmos_rtc_ops; } else { cmos_rtc.rtc->ops = &cmos_rtc_ops_no_alarm; } cmos_rtc.rtc->ops = &cmos_rtc_ops; cmos_rtc.rtc->nvram_old_abi = true; retval = rtc_register_device(cmos_rtc.rtc); if (retval) goto cleanup2; /* export at least the first block of NVRAM */ nvmem_cfg.size = address_space - NVRAM_OFFSET; if (rtc_nvmem_register(cmos_rtc.rtc, &nvmem_cfg)) dev_err(dev, "nvmem registration failed\n");