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

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Message-ID: <20240920161518.32346-1-balejk@matfyz.cz>
Date: Fri, 20 Sep 2024 18:12:34 +0200
From: Karel Balej <balejk@...fyz.cz>
To: Lee Jones <lee@...nel.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        linux-kernel@...r.kernel.org, linux-rtc@...r.kernel.org
Cc: duje.mihanovic@...le.hr, phone-devel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht
Subject: [RFC PATCH 1/2] mfd: 88pm886: add the RTC cell and relevant definitions

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 <balejk@...fyz.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