From patchwork Wed Jul 21 08:57:45 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [2/3] rtc: rtc-s3c: Updates driver for S3C64XX and newer SoCs Date: Tue, 20 Jul 2010 22:57:45 -0000 From: Kukjin Kim X-Patchwork-Id: 59417 Message-Id: <1279702666-13021-3-git-send-email-kgene.kim@samsung.com> To: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, rtc-linux@googlegroups.com Cc: ben-linux@fluff.org, p_gortmaker@yahoo.com, a.zummo@towertech.it, Atul Dahiya , Taekgyun Ko , Kukjin Kim From: Atul Dahiya This Patch does followings. 1) Enables support for alarm and time tick pending register for periodic interrupt generation. 2) Changes writeb to writew beacuse the macro S3C64XX_RTCCON_TICEN (Tick Timer Enable) is 9th bit of register. 3) Changes writeb to writel as max_user_freq used in s3c64xx is 32768 and requires 15 bits to update the Tick Count Register. Signed-off-by: Atul Dahiya Signed-off-by: Taekgyun Ko Signed-off-by: Kukjin Kim --- drivers/rtc/rtc-s3c.c | 12 ++++++++++-- 1 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index c032a15..2040017 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -57,6 +57,10 @@ static irqreturn_t s3c_rtc_alarmirq(int irq, void *id) struct rtc_device *rdev = id; rtc_update_irq(rdev, 1, RTC_AF | RTC_IRQF); + + if (s3c_rtc_cpu_type == TYPE_S3C64XX) + writeb(S3C2410_INTP_ALM, s3c_rtc_base + S3C2410_INTP); + return IRQ_HANDLED; } @@ -65,6 +69,10 @@ static irqreturn_t s3c_rtc_tickirq(int irq, void *id) struct rtc_device *rdev = id; rtc_update_irq(rdev, 1, RTC_PF | RTC_IRQF); + + if (s3c_rtc_cpu_type == TYPE_S3C64XX) + writeb(S3C2410_INTP_TIC, s3c_rtc_base + S3C2410_INTP); + return IRQ_HANDLED; } @@ -98,7 +106,7 @@ static int s3c_rtc_setpie(struct device *dev, int enabled) if (enabled) tmp |= S3C64XX_RTCCON_TICEN; - writeb(tmp, s3c_rtc_base + S3C2410_RTCCON); + writew(tmp, s3c_rtc_base + S3C2410_RTCCON); } else { tmp = readb(s3c_rtc_base + S3C2410_TICNT); tmp &= ~S3C2410_TICNT_ENABLE; @@ -132,7 +140,7 @@ static int s3c_rtc_setfreq(struct device *dev, int freq) tmp |= (rtc_dev->max_user_freq / freq)-1; - writeb(tmp, s3c_rtc_base + S3C2410_TICNT); + writel(tmp, s3c_rtc_base + S3C2410_TICNT); spin_unlock_irq(&s3c_rtc_pie_lock); return 0;