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    Subject[PATCH v2 9/9] rtc: Add support for the MediaTek MT6358 RTC
    Date
    From: Ran Bi <ran.bi@mediatek.com>

    This add support for the MediaTek MT6358 RTC. MT6397 mfd will pass
    RTC_WRTGR address offset to RTC driver.

    Signed-off-by: Ran Bi <ran.bi@mediatek.com>
    ---
    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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