[PATCH v2 9/9] rtc: Add support for the MediaTek MT6358 RTC
From: Hsin-Hsiung Wang <hidden>
Date: 2019-03-11 03:48:58
Also in:
linux-devicetree, linux-mediatek, linux-rtc, lkml
Subsystem:
arm/mediatek rtc driver, real time clock (rtc) subsystem, the rest · Maintainers:
Eddie Huang, Sean Wang, Alexandre Belloni, Linus Torvalds
From: Ran Bi <redacted> This add support for the MediaTek MT6358 RTC. MT6397 mfd will pass RTC_WRTGR address offset to RTC driver. Signed-off-by: Ran Bi <redacted> --- drivers/rtc/rtc-mt6397.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c
index f85f1fc..c8a0090 100644
--- a/drivers/rtc/rtc-mt6397.c
+++ b/drivers/rtc/rtc-mt6397.c@@ -27,7 +27,7 @@ #define RTC_BBPU 0x0000 #define RTC_BBPU_CBUSY BIT(6) -#define RTC_WRTGR 0x003c +#define RTC_WRTGR_DEFAULT 0x003c #define RTC_IRQ_STA 0x0002 #define RTC_IRQ_STA_AL BIT(0)
@@ -78,6 +78,7 @@ struct mt6397_rtc { struct regmap *regmap; int irq; u32 addr_base; + u32 wrtgr_offset; }; static int mtk_rtc_write_trigger(struct mt6397_rtc *rtc)
@@ -86,7 +87,8 @@ 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->wrtgr_offset, 1); if (ret < 0) return ret;
@@ -341,6 +343,15 @@ static int mtk_rtc_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); rtc->addr_base = res->start; + res = platform_get_resource(pdev, IORESOURCE_REG, 0); + if (res) { + rtc->wrtgr_offset = res->start; + dev_info(&pdev->dev, "register offset:%d\n", rtc->wrtgr_offset); + } else { + rtc->wrtgr_offset = RTC_WRTGR_DEFAULT; + dev_err(&pdev->dev, "Failed to get register offset\n"); + } + rtc->irq = platform_get_irq(pdev, 0); if (rtc->irq < 0) return rtc->irq;
@@ -420,6 +431,7 @@ 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,mt6358-rtc", }, { .compatible = "mediatek,mt6397-rtc", }, { } };
--
1.9.1
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