mfd: Add support for the MediaTek MT6358 PMIC

This adds support for the MediaTek MT6358 PMIC. This is a
multifunction device with the following sub modules:

- Regulator
- RTC
- Codec
- Interrupt

It is interfaced to the host controller using SPI interface
by a proprietary hardware called PMIC wrapper or pwrap.
MT6358 MFD is a child device of the pwrap.

Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 36 insertions, 0 deletions

diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c
index a313a720bb8b..f6cd8a660602 100644
--- a/drivers/mfd/mt6397-core.c
+++ b/drivers/mfd/mt6397-core.c
@@ -12,13 +12,18 @@
 #include <linux/regmap.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/mt6323/core.h>
+#include <linux/mfd/mt6358/core.h>
 #include <linux/mfd/mt6397/core.h>
 #include <linux/mfd/mt6323/registers.h>
+#include <linux/mfd/mt6358/registers.h>
 #include <linux/mfd/mt6397/registers.h>
 
 #define MT6323_RTC_BASE		0x8000
 #define MT6323_RTC_SIZE		0x40
 
+#define MT6358_RTC_BASE		0x0588
+#define MT6358_RTC_SIZE		0x3c
+
 #define MT6397_RTC_BASE		0xe000
 #define MT6397_RTC_SIZE		0x3e
 
@@ -30,6 +35,11 @@ static const struct resource mt6323_rtc_resources[] = {
 	DEFINE_RES_IRQ(MT6323_IRQ_STATUS_RTC),
 };
 
+static const struct resource mt6358_rtc_resources[] = {
+	DEFINE_RES_MEM(MT6358_RTC_BASE, MT6358_RTC_SIZE),
+	DEFINE_RES_IRQ(MT6358_IRQ_RTC),
+};
+
 static const struct resource mt6397_rtc_resources[] = {
 	DEFINE_RES_MEM(MT6397_RTC_BASE, MT6397_RTC_SIZE),
 	DEFINE_RES_IRQ(MT6397_IRQ_RTC),
@@ -74,6 +84,21 @@ static const struct mfd_cell mt6323_devs[] = {
 	},
 };
 
+static const struct mfd_cell mt6358_devs[] = {
+	{
+		.name = "mt6358-regulator",
+		.of_compatible = "mediatek,mt6358-regulator"
+	}, {
+		.name = "mt6358-rtc",
+		.num_resources = ARRAY_SIZE(mt6358_rtc_resources),
+		.resources = mt6358_rtc_resources,
+		.of_compatible = "mediatek,mt6358-rtc",
+	}, {
+		.name = "mt6358-sound",
+		.of_compatible = "mediatek,mt6358-sound"
+	},
+};
+
 static const struct mfd_cell mt6397_devs[] = {
 	{
 		.name = "mt6397-rtc",
@@ -116,6 +141,14 @@ static const struct chip_data mt6323_core = {
 	.irq_init = mt6397_irq_init,
 };
 
+static const struct chip_data mt6358_core = {
+	.cid_addr = MT6358_SWCID,
+	.cid_shift = 8,
+	.cells = mt6358_devs,
+	.cell_size = ARRAY_SIZE(mt6358_devs),
+	.irq_init = mt6358_irq_init,
+};
+
 static const struct chip_data mt6397_core = {
 	.cid_addr = MT6397_CID,
 	.cid_shift = 0,
@@ -183,6 +216,9 @@ static const struct of_device_id mt6397_of_match[] = {
 		.compatible = "mediatek,mt6323",
 		.data = &mt6323_core,
 	}, {
+		.compatible = "mediatek,mt6358",
+		.data = &mt6358_core,
+	}, {
 		.compatible = "mediatek,mt6397",
 		.data = &mt6397_core,
 	}, {