From: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
To: Lee Jones <lee.jones@linaro.org>,
Rob Herring <robh+dt@kernel.org>, Mark Brown <broonie@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Eddie Huang <eddie.huang@mediatek.com>,
Sean Wang <sean.wang@mediatek.com>,
Alessandro Zummo <a.zummo@towertech.it>,
Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>,
Kate Stewart <kstewart@linuxfoundation.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Richard Fontana <rfontana@redhat.com>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-rtc@vger.kernel.org>,
<srv_heupstream@mediatek.com>, Ran Bi <ran.bi@mediatek.com>
Subject: [PATCH v5 09/10] rtc: mt6397: fix alarm register overwrite
Date: Fri, 23 Aug 2019 11:45:30 +0800 [thread overview]
Message-ID: <1566531931-9772-10-git-send-email-hsin-hsiung.wang@mediatek.com> (raw)
In-Reply-To: <1566531931-9772-1-git-send-email-hsin-hsiung.wang@mediatek.com>
From: Ran Bi <ran.bi@mediatek.com>
Alarm registers high byte was reserved for other functions.
This add mask in alarm registers operation functions.
This also fix error condition in interrupt handler.
Fixes: fc2979118f3f ("rtc: mediatek: Add MT6397 RTC driver")
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Ran Bi <ran.bi@mediatek.com>
---
drivers/rtc/rtc-mt6397.c | 47 +++++++++++++++++++++++++++++++++--------------
1 file changed, 33 insertions(+), 14 deletions(-)
diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c
index b46ed4d..828def7 100644
--- a/drivers/rtc/rtc-mt6397.c
+++ b/drivers/rtc/rtc-mt6397.c
@@ -47,6 +47,14 @@
#define RTC_AL_SEC 0x0018
+#define RTC_AL_SEC_MASK 0x003f
+#define RTC_AL_MIN_MASK 0x003f
+#define RTC_AL_HOU_MASK 0x001f
+#define RTC_AL_DOM_MASK 0x001f
+#define RTC_AL_DOW_MASK 0x0007
+#define RTC_AL_MTH_MASK 0x000f
+#define RTC_AL_YEA_MASK 0x007f
+
#define RTC_PDN2 0x002e
#define RTC_PDN2_PWRON_ALARM BIT(4)
@@ -103,7 +111,7 @@ static irqreturn_t mtk_rtc_irq_handler_thread(int irq, void *data)
irqen = irqsta & ~RTC_IRQ_EN_AL;
mutex_lock(&rtc->lock);
if (regmap_write(rtc->regmap, rtc->addr_base + RTC_IRQ_EN,
- irqen) < 0)
+ irqen) == 0)
mtk_rtc_write_trigger(rtc);
mutex_unlock(&rtc->lock);
@@ -225,12 +233,12 @@ static int mtk_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
alm->pending = !!(pdn2 & RTC_PDN2_PWRON_ALARM);
mutex_unlock(&rtc->lock);
- tm->tm_sec = data[RTC_OFFSET_SEC];
- tm->tm_min = data[RTC_OFFSET_MIN];
- tm->tm_hour = data[RTC_OFFSET_HOUR];
- tm->tm_mday = data[RTC_OFFSET_DOM];
- tm->tm_mon = data[RTC_OFFSET_MTH];
- tm->tm_year = data[RTC_OFFSET_YEAR];
+ tm->tm_sec = data[RTC_OFFSET_SEC] & RTC_AL_SEC_MASK;
+ tm->tm_min = data[RTC_OFFSET_MIN] & RTC_AL_MIN_MASK;
+ tm->tm_hour = data[RTC_OFFSET_HOUR] & RTC_AL_HOU_MASK;
+ tm->tm_mday = data[RTC_OFFSET_DOM] & RTC_AL_DOM_MASK;
+ tm->tm_mon = data[RTC_OFFSET_MTH] & RTC_AL_MTH_MASK;
+ tm->tm_year = data[RTC_OFFSET_YEAR] & RTC_AL_YEA_MASK;
tm->tm_year += RTC_MIN_YEAR_OFFSET;
tm->tm_mon--;
@@ -251,14 +259,25 @@ static int mtk_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
tm->tm_year -= RTC_MIN_YEAR_OFFSET;
tm->tm_mon++;
- data[RTC_OFFSET_SEC] = tm->tm_sec;
- data[RTC_OFFSET_MIN] = tm->tm_min;
- data[RTC_OFFSET_HOUR] = tm->tm_hour;
- data[RTC_OFFSET_DOM] = tm->tm_mday;
- data[RTC_OFFSET_MTH] = tm->tm_mon;
- data[RTC_OFFSET_YEAR] = tm->tm_year;
-
mutex_lock(&rtc->lock);
+ ret = regmap_bulk_read(rtc->regmap, rtc->addr_base + RTC_AL_SEC,
+ data, RTC_OFFSET_COUNT);
+ if (ret < 0)
+ goto exit;
+
+ data[RTC_OFFSET_SEC] = ((data[RTC_OFFSET_SEC] & ~(RTC_AL_SEC_MASK)) |
+ (tm->tm_sec & RTC_AL_SEC_MASK));
+ data[RTC_OFFSET_MIN] = ((data[RTC_OFFSET_MIN] & ~(RTC_AL_MIN_MASK)) |
+ (tm->tm_min & RTC_AL_MIN_MASK));
+ data[RTC_OFFSET_HOUR] = ((data[RTC_OFFSET_HOUR] & ~(RTC_AL_HOU_MASK)) |
+ (tm->tm_hour & RTC_AL_HOU_MASK));
+ data[RTC_OFFSET_DOM] = ((data[RTC_OFFSET_DOM] & ~(RTC_AL_DOM_MASK)) |
+ (tm->tm_mday & RTC_AL_DOM_MASK));
+ data[RTC_OFFSET_MTH] = ((data[RTC_OFFSET_MTH] & ~(RTC_AL_MTH_MASK)) |
+ (tm->tm_mon & RTC_AL_MTH_MASK));
+ data[RTC_OFFSET_YEAR] = ((data[RTC_OFFSET_YEAR] & ~(RTC_AL_YEA_MASK)) |
+ (tm->tm_year & RTC_AL_YEA_MASK));
+
if (alm->enabled) {
ret = regmap_bulk_write(rtc->regmap,
rtc->addr_base + RTC_AL_SEC,
--
1.9.1
next prev parent reply other threads:[~2019-08-23 3:46 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-23 3:45 [PATCH v5 00/10] Add Support for MediaTek PMIC MT6358 Hsin-Hsiung Wang
2019-08-23 3:45 ` [PATCH v5 01/10] mfd: mt6397: clean up code Hsin-Hsiung Wang
2019-08-23 3:45 ` [PATCH v5 02/10] mfd: mt6397: extract irq related code from core driver Hsin-Hsiung Wang
2019-08-23 12:13 ` [BUG] " Frank Wunderlich
2019-08-23 14:56 ` Matthias Brugger
2019-08-23 15:26 ` Frank Wunderlich
2019-08-23 15:42 ` Matthias Brugger
2019-08-23 17:16 ` Aw: " Frank Wunderlich
2019-08-29 6:24 ` Hsin-hsiung Wang
2019-09-19 18:59 ` Frank Wunderlich
2019-09-30 19:44 ` Aw: " Frank Wunderlich
2019-08-23 15:35 ` Frank Wunderlich
2019-08-23 15:53 ` Frank Wunderlich
2019-08-23 14:53 ` Matthias Brugger
2019-08-23 3:45 ` [PATCH v5 03/10] mfd: mt6397: modify suspend/resume behavior Hsin-Hsiung Wang
2019-08-23 15:12 ` Matthias Brugger
2019-08-23 3:45 ` [PATCH v5 04/10] dt-bindings: mfd: Add compatible for the MediaTek MT6358 PMIC Hsin-Hsiung Wang
2019-08-23 3:45 ` [PATCH v5 05/10] regulator: Add document for MT6358 regulator Hsin-Hsiung Wang
2019-08-28 10:44 ` Mark Brown
2019-08-28 13:13 ` Applied "regulator: Add document for MT6358 regulator" to the regulator tree Mark Brown
2019-08-23 3:45 ` [PATCH v5 06/10] mfd: Add support for the MediaTek MT6358 PMIC Hsin-Hsiung Wang
2019-12-02 8:06 ` Pi-Hsun Shih
2019-12-06 8:55 ` Hsin-hsiung Wang
2019-08-23 3:45 ` [PATCH v5 07/10] regulator: mt6358: Add support for MT6358 regulator Hsin-Hsiung Wang
2019-08-28 10:45 ` Mark Brown
2019-08-29 6:09 ` Hsin-hsiung Wang
2019-08-28 13:13 ` Applied "regulator: mt6358: Add support for MT6358 regulator" to the regulator tree Mark Brown
2019-08-23 3:45 ` [PATCH v5 08/10] arm64: dts: mt6358: add PMIC MT6358 related nodes Hsin-Hsiung Wang
2019-08-23 3:45 ` Hsin-Hsiung Wang [this message]
2019-08-23 15:35 ` [PATCH v5 09/10] rtc: mt6397: fix alarm register overwrite Matthias Brugger
2019-08-29 5:34 ` Hsin-hsiung Wang
2019-08-23 3:45 ` [PATCH v5 10/10] rtc: mt6397: Add support for the MediaTek MT6358 RTC Hsin-Hsiung Wang
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