[RFC PATCH 1/2] mfd: 88pm886: add the RTC cell and relevant definitions

[Karel Balej]

RTC lives on the base register page of the chip. Add definitions of the
registers needed for a basic set/read time functionality.

Signed-off-by: Karel Balej <bal...@matfyz.cz>
---
 drivers/mfd/88pm886.c       | 1 +
 include/linux/mfd/88pm886.h | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/mfd/88pm886.c b/drivers/mfd/88pm886.c
index dbe9efc027d2..891fdce5d8c1 100644
--- a/drivers/mfd/88pm886.c
+++ b/drivers/mfd/88pm886.c
@@ -37,6 +37,7 @@ static struct resource pm886_onkey_resources[] = {
 static struct mfd_cell pm886_devs[] = {
        MFD_CELL_RES("88pm886-onkey", pm886_onkey_resources),
        MFD_CELL_NAME("88pm886-regulator"),
+       MFD_CELL_NAME("88pm886-rtc"),
 };
 
 static int pm886_power_off_handler(struct sys_off_data *sys_off_data)
diff --git a/include/linux/mfd/88pm886.h b/include/linux/mfd/88pm886.h
index 133aa302e492..85eca44f39ab 100644
--- a/include/linux/mfd/88pm886.h
+++ b/include/linux/mfd/88pm886.h
@@ -31,6 +31,15 @@
 #define PM886_INT_WC                   BIT(1)
 #define PM886_INT_MASK_MODE            BIT(2)
 
+#define PM886_REG_RTC_CNT1             0xd1
+#define PM886_REG_RTC_CNT2             0xd2
+#define PM886_REG_RTC_CNT3             0xd3
+#define PM886_REG_RTC_CNT4             0xd4
+#define PM886_REG_RTC_SPARE1           0xea
+#define PM886_REG_RTC_SPARE2           0xeb
+#define PM886_REG_RTC_SPARE3           0xec
+#define PM886_REG_RTC_SPARE4           0xed
+#define PM886_REG_RTC_SPARE5           0xee
 #define PM886_REG_RTC_SPARE6           0xef
 
 #define PM886_REG_BUCK_EN              0x08
-- 
2.46.0