static int sh_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
{
	struct sh_rtc *rtc = dev_get_drvdata(dev);
	unsigned int ret = 0;

	switch (cmd) {
	case RTC_PIE_OFF:
	case RTC_PIE_ON:
		sh_rtc_setpie(dev, cmd == RTC_PIE_ON);
		break;
	case RTC_AIE_OFF:
	case RTC_AIE_ON:
		sh_rtc_setaie(dev, cmd == RTC_AIE_ON);
		break;
	case RTC_UIE_OFF:
		rtc->periodic_freq &= ~PF_OXS;
		break;
	case RTC_UIE_ON:
		rtc->periodic_freq |= PF_OXS;
		break;
	case RTC_IRQP_READ:
		ret = put_user(rtc->rtc_dev->irq_freq,
			       (unsigned long __user *)arg);
		break;
	case RTC_IRQP_SET:
		ret = sh_rtc_setfreq(dev, arg);
		break;
	default:
		ret = -ENOIOCTLCMD;
	}

	return ret;
}
Esempio n. 2
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static void sh_rtc_release(struct device *dev)
{
	struct sh_rtc *rtc = dev_get_drvdata(dev);

	sh_rtc_setpie(dev, 0);
	sh_rtc_setaie(dev, 0);

	free_irq(rtc->periodic_irq, dev);
	free_irq(rtc->carry_irq, dev);
	free_irq(rtc->alarm_irq, dev);
}
Esempio n. 3
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static int __devexit sh_rtc_remove(struct platform_device *pdev)
{
	struct sh_rtc *rtc = platform_get_drvdata(pdev);

	if (likely(rtc->rtc_dev))
		rtc_device_unregister(rtc->rtc_dev);

	sh_rtc_setpie(&pdev->dev, 0);
	sh_rtc_setaie(&pdev->dev, 0);

	release_resource(rtc->res);

	platform_set_drvdata(pdev, NULL);

	kfree(rtc);

	return 0;
}
Esempio n. 4
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static int sh_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
{
	unsigned int ret = -ENOIOCTLCMD;

	switch (cmd) {
	case RTC_PIE_OFF:
	case RTC_PIE_ON:
		sh_rtc_setpie(dev, cmd == RTC_PIE_ON);
		ret = 0;
		break;
	case RTC_AIE_OFF:
	case RTC_AIE_ON:
		sh_rtc_setaie(dev, cmd == RTC_AIE_ON);
		ret = 0;
		break;
	}

	return ret;
}
Esempio n. 5
0
static int sh_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
{
	struct sh_rtc *rtc = dev_get_drvdata(dev);
	unsigned int ret = 0;

	switch (cmd) {
	case RTC_AIE_OFF:
	case RTC_AIE_ON:
		sh_rtc_setaie(dev, cmd == RTC_AIE_ON);
		break;
	case RTC_UIE_OFF:
		rtc->periodic_freq &= ~PF_OXS;
		sh_rtc_setcie(dev, 0);
		break;
	case RTC_UIE_ON:
		rtc->periodic_freq |= PF_OXS;
		sh_rtc_setcie(dev, 1);
		break;
	default:
		ret = -ENOIOCTLCMD;
	}

	return ret;
}
static void sh_rtc_release(struct device *dev)
{
	sh_rtc_setpie(dev, 0);
	sh_rtc_setaie(dev, 0);
}
Esempio n. 7
0
static int sh_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
    sh_rtc_setaie(dev, enabled);
    return 0;
}
Esempio n. 8
0
static int __init sh_rtc_probe(struct platform_device *pdev)
{
	struct sh_rtc *rtc;
	struct resource *res;
	struct rtc_time r;
	char clk_name[6];
	int clk_id, ret;

	rtc = kzalloc(sizeof(struct sh_rtc), GFP_KERNEL);
	if (unlikely(!rtc))
		return -ENOMEM;

	spin_lock_init(&rtc->lock);

	/* get periodic/carry/alarm irqs */
	ret = platform_get_irq(pdev, 0);
	if (unlikely(ret <= 0)) {
		ret = -ENOENT;
		dev_err(&pdev->dev, "No IRQ resource\n");
		goto err_badres;
	}

	rtc->periodic_irq = ret;
	rtc->carry_irq = platform_get_irq(pdev, 1);
	rtc->alarm_irq = platform_get_irq(pdev, 2);

	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
	if (unlikely(res == NULL)) {
		ret = -ENOENT;
		dev_err(&pdev->dev, "No IO resource\n");
		goto err_badres;
	}

	rtc->regsize = resource_size(res);

	rtc->res = request_mem_region(res->start, rtc->regsize, pdev->name);
	if (unlikely(!rtc->res)) {
		ret = -EBUSY;
		goto err_badres;
	}

	rtc->regbase = ioremap_nocache(rtc->res->start, rtc->regsize);
	if (unlikely(!rtc->regbase)) {
		ret = -EINVAL;
		goto err_badmap;
	}

	clk_id = pdev->id;
	/* With a single device, the clock id is still "rtc0" */
	if (clk_id < 0)
		clk_id = 0;

	snprintf(clk_name, sizeof(clk_name), "rtc%d", clk_id);

	rtc->clk = clk_get(&pdev->dev, clk_name);
	if (IS_ERR(rtc->clk)) {
		/*
		 * No error handling for rtc->clk intentionally, not all
		 * platforms will have a unique clock for the RTC, and
		 * the clk API can handle the struct clk pointer being
		 * NULL.
		 */
		rtc->clk = NULL;
	}

	clk_enable(rtc->clk);

	rtc->capabilities = RTC_DEF_CAPABILITIES;
	if (pdev->dev.platform_data) {
		struct sh_rtc_platform_info *pinfo = pdev->dev.platform_data;

		/*
		 * Some CPUs have special capabilities in addition to the
		 * default set. Add those in here.
		 */
		rtc->capabilities |= pinfo->capabilities;
	}

	if (rtc->carry_irq <= 0) {
		/* register shared periodic/carry/alarm irq */
		ret = request_irq(rtc->periodic_irq, sh_rtc_shared,
				  IRQF_DISABLED, "sh-rtc", rtc);
		if (unlikely(ret)) {
			dev_err(&pdev->dev,
				"request IRQ failed with %d, IRQ %d\n", ret,
				rtc->periodic_irq);
			goto err_unmap;
		}
	} else {
		/* register periodic/carry/alarm irqs */
		ret = request_irq(rtc->periodic_irq, sh_rtc_periodic,
				  IRQF_DISABLED, "sh-rtc period", rtc);
		if (unlikely(ret)) {
			dev_err(&pdev->dev,
				"request period IRQ failed with %d, IRQ %d\n",
				ret, rtc->periodic_irq);
			goto err_unmap;
		}

		ret = request_irq(rtc->carry_irq, sh_rtc_interrupt,
				  IRQF_DISABLED, "sh-rtc carry", rtc);
		if (unlikely(ret)) {
			dev_err(&pdev->dev,
				"request carry IRQ failed with %d, IRQ %d\n",
				ret, rtc->carry_irq);
			free_irq(rtc->periodic_irq, rtc);
			goto err_unmap;
		}

		ret = request_irq(rtc->alarm_irq, sh_rtc_alarm,
				  IRQF_DISABLED, "sh-rtc alarm", rtc);
		if (unlikely(ret)) {
			dev_err(&pdev->dev,
				"request alarm IRQ failed with %d, IRQ %d\n",
				ret, rtc->alarm_irq);
			free_irq(rtc->carry_irq, rtc);
			free_irq(rtc->periodic_irq, rtc);
			goto err_unmap;
		}
	}

	platform_set_drvdata(pdev, rtc);

	/* everything disabled by default */
	sh_rtc_irq_set_freq(&pdev->dev, 0);
	sh_rtc_irq_set_state(&pdev->dev, 0);
	sh_rtc_setaie(&pdev->dev, 0);
	sh_rtc_setcie(&pdev->dev, 0);

	rtc->rtc_dev = rtc_device_register("sh", &pdev->dev,
					   &sh_rtc_ops, THIS_MODULE);
	if (IS_ERR(rtc->rtc_dev)) {
		ret = PTR_ERR(rtc->rtc_dev);
		free_irq(rtc->periodic_irq, rtc);
		free_irq(rtc->carry_irq, rtc);
		free_irq(rtc->alarm_irq, rtc);
		goto err_unmap;
	}

	rtc->rtc_dev->max_user_freq = 256;

	/* reset rtc to epoch 0 if time is invalid */
	if (rtc_read_time(rtc->rtc_dev, &r) < 0) {
		rtc_time_to_tm(0, &r);
		rtc_set_time(rtc->rtc_dev, &r);
	}

	device_init_wakeup(&pdev->dev, 1);
	return 0;

err_unmap:
	clk_disable(rtc->clk);
	clk_put(rtc->clk);
	iounmap(rtc->regbase);
err_badmap:
	release_resource(rtc->res);
err_badres:
	kfree(rtc);

	return ret;
}