rk30: sdk add wm8326 support

[firefly-linux-kernel-4.4.55.git] / drivers / rtc / rtc-wm831x.c

diff --git a/drivers/rtc/rtc-wm831x.c b/drivers/rtc/rtc-wm831x.c
old mode 100644 (file)
new mode 100755 (executable)
index bdc909b..c919ec3
--- a/drivers/rtc/rtc-wm831x.c
+++ b/drivers/rtc/rtc-wm831x.c
@@ -408,7 +408,9 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
        int per_irq = platform_get_irq_byname(pdev, "PER");
        int alm_irq = platform_get_irq_byname(pdev, "ALM");
        int ret = 0;
+       struct rtc_time tm;
 
+       //printk("wm831x_rtc_probe\n");
        wm831x_rtc = kzalloc(sizeof(*wm831x_rtc), GFP_KERNEL);
        if (wm831x_rtc == NULL)
                return -ENOMEM;
@@ -416,6 +418,13 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
        platform_set_drvdata(pdev, wm831x_rtc);
        wm831x_rtc->wm831x = wm831x;
 
+#ifdef CONFIG_ARCH_RK30
+       wm831x_reg_read(wm831x, WM831X_CLOCK_CONTROL_1);
+       wm831x_set_bits(wm831x, WM831X_SECURITY_KEY, 0x9716, 0x9716);  //0x4090h bit15 is encrypted, if this bit need modify, we must write 0x4008h as 0x9716 first.
+       wm831x_set_bits(wm831x, WM831X_CLOCK_CONTROL_1, 0x8700, 0x8100); //open the clk out
+       wm831x_reg_read(wm831x, WM831X_CLOCK_CONTROL_1);
+#endif
+
        ret = wm831x_reg_read(wm831x, WM831X_RTC_CONTROL);
        if (ret < 0) {
                dev_err(&pdev->dev, "Failed to read RTC control: %d\n", ret);
@@ -424,6 +433,17 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
        if (ret & WM831X_RTC_ALM_ENA)
                wm831x_rtc->alarm_enabled = 1;
 
+       ret = wm831x_rtc_readtime(&pdev->dev, &tm);
+       if (ret < 0 || tm.tm_year < 111) {
+               if (ret)
+                       dev_err(&pdev->dev, "Failed to read RTC time\n");
+               else
+                       dev_err(&pdev->dev, "Invalid RTC date/time %4d-%02d-%02d(%d) %02d:%02d:%02d\n",
+                               1900 + tm.tm_year, tm.tm_mon + 1, tm.tm_mday, tm.tm_wday,
+                               tm.tm_hour, tm.tm_min, tm.tm_sec);
+               wm831x_rtc_set_mmss(&pdev->dev, 1293883200); // 2011-01-01 12:00:00
+       }
+
        device_init_wakeup(&pdev->dev, 1);
 
        wm831x_rtc->rtc = rtc_device_register("wm831x", &pdev->dev,