This adds support for the MediaTek MT6359 PMIC. This is a
multifunction device with the following sub modules:

- Codec
- Interrupt
- Regulator
- RTC

It is interfaced to the host controller using SPI interface
by a proprietary hardware called PMIC wrapper or pwrap.
MT6359 MFD is a child device of the pwrap.

Signed-off-by: Hsin-Hsiung Wang <redacted>
---
changes since v4:
- remove unused compatible name in the mt6359 mfd cells.
---
 drivers/mfd/mt6358-irq.c             |  24 ++
 drivers/mfd/mt6397-core.c            |  26 ++
 include/linux/mfd/mt6359/core.h      | 133 +++++++
 include/linux/mfd/mt6359/registers.h | 529 +++++++++++++++++++++++++++
 include/linux/mfd/mt6397/core.h      |   1 +
 5 files changed, 713 insertions(+)
 create mode 100644 include/linux/mfd/mt6359/core.h
 create mode 100644 include/linux/mfd/mt6359/registers.h

diff --git a/drivers/mfd/mt6358-irq.c b/drivers/mfd/mt6358-irq.c
index 4b094e5e51cc..83f3ffbdbb4c 100644
--- a/drivers/mfd/mt6358-irq.c
+++ b/drivers/mfd/mt6358-irq.c

@@ -5,6 +5,8 @@
 #include <linux/interrupt.h>
 #include <linux/mfd/mt6358/core.h>
 #include <linux/mfd/mt6358/registers.h>
+#include <linux/mfd/mt6359/core.h>
+#include <linux/mfd/mt6359/registers.h>
 #include <linux/mfd/mt6397/core.h>
 #include <linux/module.h>
 #include <linux/of.h>

@@ -26,6 +28,17 @@ static const struct irq_top_t mt6358_ints[] = {
 	MT6358_TOP_GEN(MISC),
 };
 
+static const struct irq_top_t mt6359_ints[] = {
+	MT6359_TOP_GEN(BUCK),
+	MT6359_TOP_GEN(LDO),
+	MT6359_TOP_GEN(PSC),
+	MT6359_TOP_GEN(SCK),
+	MT6359_TOP_GEN(BM),
+	MT6359_TOP_GEN(HK),
+	MT6359_TOP_GEN(AUD),
+	MT6359_TOP_GEN(MISC),
+};
+
 static struct pmic_irq_data mt6358_irqd = {
 	.num_top = ARRAY_SIZE(mt6358_ints),
 	.num_pmic_irqs = MT6358_IRQ_NR,

@@ -33,6 +46,13 @@ static struct pmic_irq_data mt6358_irqd = {
 	.pmic_ints = mt6358_ints,
 };
 
+static struct pmic_irq_data mt6359_irqd = {
+	.num_top = ARRAY_SIZE(mt6359_ints),
+	.num_pmic_irqs = MT6359_IRQ_NR,
+	.top_int_status_reg = MT6359_TOP_INT_STATUS0,
+	.pmic_ints = mt6359_ints,
+};
+
 static void pmic_irq_enable(struct irq_data *data)
 {
 	unsigned int hwirq = irqd_to_hwirq(data);

@@ -195,6 +215,10 @@ int mt6358_irq_init(struct mt6397_chip *chip)
 		chip->irq_data = &mt6358_irqd;
 		break;
 
+	case MT6359_CHIP_ID:
+		chip->irq_data = &mt6359_irqd;
+		break;
+
 	default:
 		dev_err(chip->dev, "unsupported chip: 0x%x\n", chip->chip_id);
 		return -ENODEV;

diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c
index 7518d74c3b4c..617e4e4d5de0 100644
--- a/drivers/mfd/mt6397-core.c
+++ b/drivers/mfd/mt6397-core.c

@@ -13,9 +13,11 @@
 #include <linux/mfd/core.h>
 #include <linux/mfd/mt6323/core.h>
 #include <linux/mfd/mt6358/core.h>
+#include <linux/mfd/mt6359/core.h>
 #include <linux/mfd/mt6397/core.h>
 #include <linux/mfd/mt6323/registers.h>
 #include <linux/mfd/mt6358/registers.h>
+#include <linux/mfd/mt6359/registers.h>
 #include <linux/mfd/mt6397/registers.h>
 
 #define MT6323_RTC_BASE		0x8000

@@ -99,6 +101,19 @@ static const struct mfd_cell mt6358_devs[] = {
 	},
 };
 
+static const struct mfd_cell mt6359_devs[] = {
+	{
+		.name = "mt6359-regulator",
+	}, {
+		.name = "mt6359-rtc",
+		.num_resources = ARRAY_SIZE(mt6358_rtc_resources),
+		.resources = mt6358_rtc_resources,
+		.of_compatible = "mediatek,mt6358-rtc",
+	}, {
+		.name = "mt6359-sound",
+	},
+};

 static const struct mfd_cell mt6397_devs[] = {
 	{
 		.name = "mt6397-rtc",

@@ -149,6 +164,14 @@ static const struct chip_data mt6358_core = {
 	.irq_init = mt6358_irq_init,
 };
 
+static const struct chip_data mt6359_core = {
+	.cid_addr = MT6359_SWCID,
+	.cid_shift = 8,
+	.cells = mt6359_devs,
+	.cell_size = ARRAY_SIZE(mt6359_devs),
+	.irq_init = mt6358_irq_init,
+};
+
 static const struct chip_data mt6397_core = {
 	.cid_addr = MT6397_CID,
 	.cid_shift = 0,

@@ -218,6 +241,9 @@ static const struct of_device_id mt6397_of_match[] = {
 	}, {
 		.compatible = "mediatek,mt6358",
 		.data = &mt6358_core,
+	}, {
+		.compatible = "mediatek,mt6359",
+		.data = &mt6359_core,
 	}, {
 		.compatible = "mediatek,mt6397",
 		.data = &mt6397_core,

diff --git a/include/linux/mfd/mt6359/core.h b/include/linux/mfd/mt6359/core.h
new file mode 100644
index 000000000000..61872f1ecbe4
--- /dev/null
+++ b/include/linux/mfd/mt6359/core.h

@@ -0,0 +1,133 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2020 MediaTek Inc.

+#endif /* __MFD_MT6359_CORE_H__ */

diff --git a/include/linux/mfd/mt6359/registers.h b/include/linux/mfd/mt6359/registers.h
new file mode 100644
index 000000000000..4d72f0a7f2b0
--- /dev/null
+++ b/include/linux/mfd/mt6359/registers.h

@@ -0,0 +1,529 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2020 MediaTek Inc.

+#endif /* __MFD_MT6359_REGISTERS_H__ */

diff --git a/include/linux/mfd/mt6397/core.h b/include/linux/mfd/mt6397/core.h
index 949268581b36..56f210eebc54 100644
--- a/include/linux/mfd/mt6397/core.h
+++ b/include/linux/mfd/mt6397/core.h

@@ -13,6 +13,7 @@
 enum chip_id {
 	MT6323_CHIP_ID = 0x23,
 	MT6358_CHIP_ID = 0x58,
+	MT6359_CHIP_ID = 0x59,
 	MT6391_CHIP_ID = 0x91,
 	MT6397_CHIP_ID = 0x97,
 };