linux-kernel - [PATCH v1 04/16] mfd: mt6397: add MT6323 RTC support into MT6397 driver

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Date:   Fri, 23 Mar 2018 17:15:01 +0800
From:   <sean.wang@...iatek.com>
To:     <robh+dt@...nel.org>, <mark.rutland@....com>, <sre@...nel.org>,
        <lee.jones@...aro.org>, <a.zummo@...ertech.it>,
        <alexandre.belloni@...e-electrons.com>, <eddie.huang@...iatek.com>
CC:     <devicetree@...r.kernel.org>, <linux-rtc@...r.kernel.org>,
        <linux-pm@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Sean Wang <sean.wang@...iatek.com>
Subject: [PATCH v1 04/16] mfd: mt6397: add MT6323 RTC support into MT6397 driver

From: Sean Wang <sean.wang@...iatek.com>

Add compatible string as "mt6323-rtc" that will make the OF core spawn
child devices for the RTC subnode of that MT6323 MFD node.

Signed-off-by: Sean Wang <sean.wang@...iatek.com>
---
 drivers/mfd/mt6397-core.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c
index 77b64bd..f71874a 100644
--- a/drivers/mfd/mt6397-core.c
+++ b/drivers/mfd/mt6397-core.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014 MediaTek Inc.
+ * Copyright (c) 2014-2018 MediaTek Inc.
  * Author: Flora Fu, MediaTek
  *
  * This program is free software; you can redistribute it and/or modify
@@ -23,6 +23,9 @@
 #include <linux/mfd/mt6397/registers.h>
 #include <linux/mfd/mt6323/registers.h>
 
+#define MT6323_RTC_BASE		0x8000
+#define MT6323_RTC_SIZE		0x3e
+
 #define MT6397_RTC_BASE		0xe000
 #define MT6397_RTC_SIZE		0x3e
 
@@ -30,6 +33,19 @@
 #define MT6391_CID_CODE		0x91
 #define MT6397_CID_CODE		0x97
 
+static const struct resource mt6323_rtc_resources[] = {
+	{
+		.start = MT6323_RTC_BASE,
+		.end   = MT6323_RTC_BASE + MT6323_RTC_SIZE,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.start = MT6323_IRQ_STATUS_RTC,
+		.end   = MT6323_IRQ_STATUS_RTC,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
 static const struct resource mt6397_rtc_resources[] = {
 	{
 		.start = MT6397_RTC_BASE,
@@ -55,6 +71,11 @@ static const struct resource mt6397_keys_resources[] = {
 
 static const struct mfd_cell mt6323_devs[] = {
 	{
+		.name = "mt6323-rtc",
+		.num_resources = ARRAY_SIZE(mt6323_rtc_resources),
+		.resources = mt6323_rtc_resources,
+		.of_compatible = "mediatek,mt6323-rtc",
+	}, {
 		.name = "mt6323-regulator",
 		.of_compatible = "mediatek,mt6323-regulator"
 	}, {
-- 
2.7.4