The on-chip RTC of this SoC is almost similar to the previous
versions of SoC. Hence re-use the existing driver with platform specific
change to enable RTC.
This has been tested with 'hwclock' & 'date' utilities
Signed-off-by: Devang Tailor <dev.tailor@xxxxxxxxxxx>
---
drivers/rtc/rtc-s3c.c | 26 ++++++++++++++++++++++++++
drivers/rtc/rtc-s3c.h | 4 ++++
2 files changed, 30 insertions(+)
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 5dd575865adf..00686aa805f2 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -384,6 +384,23 @@ static void s3c6410_rtc_disable(struct s3c_rtc *info)
writew(con, info->base + S3C2410_RTCCON);
}
+static void exynosautov9_rtc_disable(struct s3c_rtc *info)
+{
+ unsigned int con;
+
+ con = readb(info->base + S3C2410_RTCCON);
+ con &= ~S3C2410_RTCCON_RTCEN;
+ writeb(con, info->base + S3C2410_RTCCON);
+
+ con = readb(info->base + EXYNOSAUTOV9_TICCON0);
+ con &= ~EXYNOSAUTOV9_TICCON_TICEN;
+ writeb(con, info->base + EXYNOSAUTOV9_TICCON0);
+
+ con = readb(info->base + EXYNOSAUTOV9_TICCON1);
+ con &= ~EXYNOSAUTOV9_TICCON_TICEN;
+ writeb(con, info->base + EXYNOSAUTOV9_TICCON1);
+}
+
static void s3c_rtc_remove(struct platform_device *pdev)
{
struct s3c_rtc *info = platform_get_drvdata(pdev);
@@ -574,6 +591,12 @@ static struct s3c_rtc_data const s3c6410_rtc_data = {
.disable = s3c6410_rtc_disable,
};
+static struct s3c_rtc_data const exynosautov9_rtc_data = {
+ .irq_handler = s3c6410_rtc_irq,
+ .enable = s3c24xx_rtc_enable,
+ .disable = exynosautov9_rtc_disable,
+};
+
static const __maybe_unused struct of_device_id s3c_rtc_dt_match[] = {
{
.compatible = "samsung,s3c2410-rtc",
@@ -590,6 +613,9 @@ static const __maybe_unused struct of_device_id s3c_rtc_dt_match[] = {
}, {
.compatible = "samsung,exynos3250-rtc",
.data = &s3c6410_rtc_data,
+ }, {
+ .compatible = "samsung,exynosautov9-rtc",
+ .data = &exynosautov9_rtc_data,
},
{ /* sentinel */ },
};
diff --git a/drivers/rtc/rtc-s3c.h b/drivers/rtc/rtc-s3c.h
index 3552914aa611..ed57ebe06b41 100644
--- a/drivers/rtc/rtc-s3c.h
+++ b/drivers/rtc/rtc-s3c.h
@@ -14,6 +14,10 @@
#define S3C2410_INTP_ALM (1 << 1)
#define S3C2410_INTP_TIC (1 << 0)
+#define EXYNOSAUTOV9_TICCON0 S3C2410_RTCREG(0x38)
+#define EXYNOSAUTOV9_TICCON1 S3C2410_RTCREG(0x3C)
+#define EXYNOSAUTOV9_TICCON_TICEN (1 << 0)
+
#define S3C2410_RTCCON S3C2410_RTCREG(0x40)
#define S3C2410_RTCCON_RTCEN (1 << 0)
#define S3C2410_RTCCON_CNTSEL (1 << 2)
--
2.34.1
