Exemplo n.º 1
0
static void s3c2416_rtc_setfreq(struct s3c_rtc *info, int freq)
{
	unsigned int tmp = 0;
	int val;

	tmp = readb(info->base + S3C2410_TICNT);
	tmp &= S3C2410_TICNT_ENABLE;

	val = (info->rtc->max_user_freq / freq) - 1;

	tmp |= S3C2443_TICNT_PART(val);
	writel(S3C2443_TICNT1_PART(val), info->base + S3C2443_TICNT1);

	writel(S3C2416_TICNT2_PART(val), info->base + S3C2416_TICNT2);

	writel(tmp, info->base + S3C2410_TICNT);
}
Exemplo n.º 2
0
static int s3c_rtc_setfreq(struct rtc_device *rtc_dev, int freq)
{
	//struct platform_device *pdev = to_platform_device(dev);
	//struct rtc_device *rtc_dev = platform_get_drvdata(pdev);
	unsigned int tmp = 0;
	int val;

	if (!is_power_of_2(freq)) {
		return -EINVAL;
	}

	clk_enable(rtc_clk);
	spin_lock_irq(&s3c_rtc_pie_lock);

	if (s3c_rtc_cpu_type != TYPE_S3C64XX) {
		tmp = readb(s3c_rtc_base + S3C2410_TICNT);
		tmp &= S3C2410_TICNT_ENABLE;
	}
	//val = (rtc_dev->max_user_freq / freq) - 1;
	val = udiv32(max_user_freq, freq) - 1;

	if (s3c_rtc_cpu_type == TYPE_S3C2416
	    || s3c_rtc_cpu_type == TYPE_S3C2443) {
		tmp |= S3C2443_TICNT_PART(val);
		writel(S3C2443_TICNT1_PART(val), s3c_rtc_base + S3C2443_TICNT1);

		if (s3c_rtc_cpu_type == TYPE_S3C2416)
			writel(S3C2416_TICNT2_PART(val),
			       s3c_rtc_base + S3C2416_TICNT2);
	} else {
		tmp |= val;
	}

	writel(tmp, s3c_rtc_base + S3C2410_TICNT);
	spin_unlock_irq(&s3c_rtc_pie_lock);
	clk_disable(rtc_clk);

	return 0;
}