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Date: Tue, 10 Mar 2020 18:10:39 +0800
From: Hsin-Hsiung Wang <hsin-hsiung.wang@...iatek.com>
To: Lee Jones <lee.jones@...aro.org>, Rob Herring <robh+dt@...nel.org>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Matthias Brugger <matthias.bgg@...il.com>
CC: Mark Rutland <mark.rutland@....com>,
Sean Wang <sean.wang@...iatek.com>,
Sebastian Reichel <sre@...nel.org>,
Eddie Huang <eddie.huang@...iatek.com>,
Alessandro Zummo <a.zummo@...ertech.it>,
Hsin-Hsiung Wang <hsin-hsiung.wang@...iatek.com>,
Frank Wunderlich <frank-w@...lic-files.de>,
Thomas Gleixner <tglx@...utronix.de>,
Richard Fontana <rfontana@...hat.com>,
Josef Friedl <josef.friedl@...ed.at>,
Ran Bi <ran.bi@...iatek.com>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>,
<linux-rtc@...r.kernel.org>,
Nicolas Boichat <drinkcat@...omium.org>,
<srv_heupstream@...iatek.com>
Subject: [PATCH v9 4/5] rtc: mt6397: Add support for the MediaTek MT6358 RTC
From: Ran Bi <ran.bi@...iatek.com>
This add support for the MediaTek MT6358 RTC. Driver using
compatible data to store different RTC_WRTGR address offset.
This replace RTC_WRTGR to RTC_WRTGR_MT6323 in mt6323-poweroff
driver which only needed by armv7 CPU without ATF.
Signed-off-by: Ran Bi <ran.bi@...iatek.com>
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@...iatek.com>
---
drivers/power/reset/mt6323-poweroff.c | 2 +-
drivers/rtc/rtc-mt6397.c | 24 ++++++++++++++++--------
include/linux/mfd/mt6397/rtc.h | 17 ++++++++++++++++-
3 files changed, 33 insertions(+), 10 deletions(-)
diff --git a/drivers/power/reset/mt6323-poweroff.c b/drivers/power/reset/mt6323-poweroff.c
index 1caf43d..0532803 100644
--- a/drivers/power/reset/mt6323-poweroff.c
+++ b/drivers/power/reset/mt6323-poweroff.c
@@ -30,7 +30,7 @@ static void mt6323_do_pwroff(void)
int ret;
regmap_write(pwrc->regmap, pwrc->base + RTC_BBPU, RTC_BBPU_KEY);
- regmap_write(pwrc->regmap, pwrc->base + RTC_WRTGR, 1);
+ regmap_write(pwrc->regmap, pwrc->base + RTC_WRTGR_MT6323, 1);
ret = regmap_read_poll_timeout(pwrc->regmap,
pwrc->base + RTC_BBPU, val,
diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c
index cda238d..bc577ef 100644
--- a/drivers/rtc/rtc-mt6397.c
+++ b/drivers/rtc/rtc-mt6397.c
@@ -9,18 +9,30 @@
#include <linux/mfd/mt6397/core.h>
#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/rtc.h>
#include <linux/mfd/mt6397/rtc.h>
#include <linux/mod_devicetable.h>
+static const struct of_device_id mt6397_rtc_of_match[] = {
+ { .compatible = "mediatek,mt6323-rtc",
+ .data = (void *)&mt6397_rtc_data, },
+ { .compatible = "mediatek,mt6358-rtc",
+ .data = (void *)&mt6358_rtc_data, },
+ { .compatible = "mediatek,mt6397-rtc",
+ .data = (void *)&mt6397_rtc_data, },
+ {}
+};
+MODULE_DEVICE_TABLE(of, mt6397_rtc_of_match);
+
static int mtk_rtc_write_trigger(struct mt6397_rtc *rtc)
{
int ret;
u32 data;
- ret = regmap_write(rtc->regmap, rtc->addr_base + RTC_WRTGR, 1);
+ ret = regmap_write(rtc->regmap, rtc->addr_base + rtc->data->wrtgr, 1);
if (ret < 0)
return ret;
@@ -269,6 +281,9 @@ static int mtk_rtc_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
rtc->addr_base = res->start;
+ rtc->data = (struct mtk_rtc_data *)
+ of_device_get_match_data(&pdev->dev);
+
rtc->irq = platform_get_irq(pdev, 0);
if (rtc->irq < 0)
return rtc->irq;
@@ -325,13 +340,6 @@ static int mt6397_rtc_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(mt6397_pm_ops, mt6397_rtc_suspend,
mt6397_rtc_resume);
-static const struct of_device_id mt6397_rtc_of_match[] = {
- { .compatible = "mediatek,mt6323-rtc", },
- { .compatible = "mediatek,mt6397-rtc", },
- { }
-};
-MODULE_DEVICE_TABLE(of, mt6397_rtc_of_match);
-
static struct platform_driver mtk_rtc_driver = {
.driver = {
.name = "mt6397-rtc",
diff --git a/include/linux/mfd/mt6397/rtc.h b/include/linux/mfd/mt6397/rtc.h
index 7dfb63b..3dc48e8 100644
--- a/include/linux/mfd/mt6397/rtc.h
+++ b/include/linux/mfd/mt6397/rtc.h
@@ -18,7 +18,9 @@
#define RTC_BBPU_CBUSY BIT(6)
#define RTC_BBPU_KEY (0x43 << 8)
-#define RTC_WRTGR 0x003c
+#define RTC_WRTGR_MT6358 0x3a
+#define RTC_WRTGR_MT6397 0x3c
+#define RTC_WRTGR_MT6323 RTC_WRTGR_MT6397
#define RTC_IRQ_STA 0x0002
#define RTC_IRQ_STA_AL BIT(0)
@@ -65,6 +67,10 @@
#define MTK_RTC_POLL_DELAY_US 10
#define MTK_RTC_POLL_TIMEOUT (jiffies_to_usecs(HZ))
+struct mtk_rtc_data {
+ u32 wrtgr;
+};
+
struct mt6397_rtc {
struct device *dev;
struct rtc_device *rtc_dev;
@@ -74,6 +80,15 @@ struct mt6397_rtc {
struct regmap *regmap;
int irq;
u32 addr_base;
+ const struct mtk_rtc_data *data;
+};
+
+static const struct mtk_rtc_data mt6358_rtc_data = {
+ .wrtgr = RTC_WRTGR_MT6358,
+};
+
+static const struct mtk_rtc_data mt6397_rtc_data = {
+ .wrtgr = RTC_WRTGR_MT6397,
};
#endif /* _LINUX_MFD_MT6397_RTC_H_ */
--
2.6.4
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