mfd: rn5t618: Do not cache various USB related registers

These register get reset to their OTP defaults after USB plugging.
And while at it, also add a missing register for detecting the
charger type.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c
index dc452df1f1bfe635f390c419a86534ee7f4ba0c0..6ed04e6dbc783a35fdfb676b3d6199432b1125b3 100644 (file)
--- a/drivers/mfd/rn5t618.c
+++ b/drivers/mfd/rn5t618.c
@@ -45,8 +45,11 @@ static bool rn5t618_volatile_reg(struct device *dev, unsigned int reg)
        case RN5T618_INTMON:
        case RN5T618_RTC_CTRL1 ... RN5T618_RTC_CTRL2:
        case RN5T618_RTC_SECONDS ... RN5T618_RTC_YEAR:
+       case RN5T618_CHGCTL1:
+       case RN5T618_REGISET1 ... RN5T618_REGISET2:
        case RN5T618_CHGSTATE:
        case RN5T618_CHGCTRL_IRR ... RN5T618_CHGERR_MONI:
+       case RN5T618_GCHGDET:
        case RN5T618_CONTROL ... RN5T618_CC_AVEREG0:
                return true;
        default:

diff --git a/include/linux/mfd/rn5t618.h b/include/linux/mfd/rn5t618.h
index fba0df13d9a861f2e4cd926a2cd5ba78296c910c..8aa0bda1af4fa2a043bb329db45de06c23c5c20f 100644 (file)
--- a/include/linux/mfd/rn5t618.h
+++ b/include/linux/mfd/rn5t618.h
@@ -188,6 +188,7 @@
 #define RN5T618_CHGOSCSCORESET3                0xd7
 #define RN5T618_CHGOSCFREQSET1         0xd8
 #define RN5T618_CHGOSCFREQSET2         0xd9
+#define RN5T618_GCHGDET                        0xda
 #define RN5T618_CONTROL                        0xe0
 #define RN5T618_SOC                    0xe1
 #define RN5T618_RE_CAP_H               0xe2