diff options
Diffstat (limited to 'drivers/rtc/rtc-s3c.c')
| -rw-r--r-- | drivers/rtc/rtc-s3c.c | 71 |
1 files changed, 58 insertions, 13 deletions
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index c543f6f1eec2..9ccea134a996 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); @@ -428,12 +441,27 @@ static int __devexit s3c_rtc_remove(struct platform_device *dev) return 0; } +static const struct of_device_id s3c_rtc_dt_match[]; + +static inline int s3c_rtc_get_driver_data(struct platform_device *pdev) +{ +#ifdef CONFIG_OF + if (pdev->dev.of_node) { + const struct of_device_id *match; + match = of_match_node(s3c_rtc_dt_match, pdev->dev.of_node); + return match->data; + } +#endif + return platform_get_device_id(pdev)->driver_data; +} + static int __devinit s3c_rtc_probe(struct platform_device *pdev) { struct rtc_device *rtc; struct rtc_time rtc_tm; struct resource *res; int ret; + int tmp; pr_debug("%s: probe=%p\n", __func__, pdev); @@ -508,13 +536,7 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev) goto err_nortc; } -#ifdef CONFIG_OF - if (pdev->dev.of_node) - s3c_rtc_cpu_type = of_device_is_compatible(pdev->dev.of_node, - "samsung,s3c6410-rtc") ? TYPE_S3C64XX : TYPE_S3C2410; - else -#endif - s3c_rtc_cpu_type = platform_get_device_id(pdev)->driver_data; + s3c_rtc_cpu_type = s3c_rtc_get_driver_data(pdev); /* Check RTC Time */ @@ -533,11 +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); @@ -638,8 +666,19 @@ static int s3c_rtc_resume(struct platform_device *pdev) #ifdef CONFIG_OF static const struct of_device_id s3c_rtc_dt_match[] = { - { .compatible = "samsung,s3c2410-rtc" }, - { .compatible = "samsung,s3c6410-rtc" }, + { + .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, + }, {}, }; MODULE_DEVICE_TABLE(of, s3c_rtc_dt_match); @@ -652,6 +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, }, |