diff options
| author | Heiko Stuebner <heiko@sntech.de> | 2011-12-24 05:52:19 +0400 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2012-02-07 03:03:42 +0400 |
| commit | 25c1a2466008a75955e80df3cc0698410a0cec72 (patch) | |
| tree | fe01954187996f69f99e6beb4a5817dd60415b90 /drivers/rtc/rtc-s3c.c | |
| parent | d2524caac3e14af0b95bb428084e0ef355514c2f (diff) | |
| download | linux-25c1a2466008a75955e80df3cc0698410a0cec72.tar.xz | |
rtc-s3c: add variants for S3C2443 and S3C2416
Especially the TICNT registers are different from the two rtc
types that currently exists.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'drivers/rtc/rtc-s3c.c')
| -rw-r--r-- | drivers/rtc/rtc-s3c.c | 40 |
1 files changed, 36 insertions, 4 deletions
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index a6f95fb74dd2..78951866f8ab 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -35,6 +35,8 @@ enum s3c_cpu_type { TYPE_S3C2410, + TYPE_S3C2416, + TYPE_S3C2443, TYPE_S3C64XX, }; @@ -132,6 +134,7 @@ static int s3c_rtc_setfreq(struct device *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; @@ -139,12 +142,22 @@ static int s3c_rtc_setfreq(struct device *dev, int freq) clk_enable(rtc_clk); spin_lock_irq(&s3c_rtc_pie_lock); - if (s3c_rtc_cpu_type == TYPE_S3C2410) { + if (s3c_rtc_cpu_type != TYPE_S3C64XX) { tmp = readb(s3c_rtc_base + S3C2410_TICNT); tmp &= S3C2410_TICNT_ENABLE; } - tmp |= (rtc_dev->max_user_freq / freq)-1; + val = (rtc_dev->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); @@ -371,7 +384,7 @@ static void s3c_rtc_enable(struct platform_device *pdev, int en) tmp &= ~S3C2410_RTCCON_RTCEN; writew(tmp, base + S3C2410_RTCCON); - if (s3c_rtc_cpu_type == TYPE_S3C2410) { + if (s3c_rtc_cpu_type != TYPE_S3C64XX) { tmp = readb(base + S3C2410_TICNT); tmp &= ~S3C2410_TICNT_ENABLE; writeb(tmp, base + S3C2410_TICNT); @@ -448,6 +461,7 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev) struct rtc_time rtc_tm; struct resource *res; int ret; + int tmp; pr_debug("%s: probe=%p\n", __func__, pdev); @@ -541,11 +555,17 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev) dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n"); } - if (s3c_rtc_cpu_type == TYPE_S3C64XX) + if (s3c_rtc_cpu_type != TYPE_S3C2410) rtc->max_user_freq = 32768; else rtc->max_user_freq = 128; + if (s3c_rtc_cpu_type == TYPE_S3C2416 || s3c_rtc_cpu_type == TYPE_S3C2443) { + tmp = readw(s3c_rtc_base + S3C2410_RTCCON); + tmp |= S3C2443_RTCCON_TICSEL; + writew(tmp, s3c_rtc_base + S3C2410_RTCCON); + } + platform_set_drvdata(pdev, rtc); s3c_rtc_setfreq(&pdev->dev, 1); @@ -650,6 +670,12 @@ static const struct of_device_id s3c_rtc_dt_match[] = { .compatible = "samsung,s3c2410-rtc" .data = TYPE_S3C2410, }, { + .compatible = "samsung,s3c2416-rtc" + .data = TYPE_S3C2416, + }, { + .compatible = "samsung,s3c2443-rtc" + .data = TYPE_S3C2443, + }, { .compatible = "samsung,s3c6410-rtc" .data = TYPE_S3C64XX, }, @@ -665,6 +691,12 @@ static struct platform_device_id s3c_rtc_driver_ids[] = { .name = "s3c2410-rtc", .driver_data = TYPE_S3C2410, }, { + .name = "s3c2416-rtc", + .driver_data = TYPE_S3C2416, + }, { + .name = "s3c2443-rtc", + .driver_data = TYPE_S3C2443, + }, { .name = "s3c64xx-rtc", .driver_data = TYPE_S3C64XX, }, |