mfd: arizona: Integrate wm8997 into Arizona mfd

The wm8997 is a compact, high-performance audio hub CODEC with SLIMbus
interfacing, for smartphones, tablets and other portable audio devices
based on the Arizona platform.

This patch integrates the wm8997 into the Arizona mfd.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/Kconfig

@@ -1047,6 +1047,12 @@ config MFD_WM5110
 	help
 	  Support for Wolfson Microelectronics WM5110 low power audio SoC
 
+config MFD_WM8997
+	bool "Support Wolfson Microelectronics WM8997"
+	depends on MFD_ARIZONA
+	help
+	  Support for Wolfson Microelectronics WM8997 low power audio SoC
+
 config MFD_WM8400
 	bool "Wolfson Microelectronics WM8400"
 	select MFD_CORE

drivers/mfd/Makefile

@@ -43,6 +43,9 @@ endif
 ifneq ($(CONFIG_MFD_WM5110),n)
 obj-$(CONFIG_MFD_ARIZONA)	+= wm5110-tables.o
 endif
+ifneq ($(CONFIG_MFD_WM8997),n)
+obj-$(CONFIG_MFD_ARIZONA)	+= wm8997-tables.o
+endif
 obj-$(CONFIG_MFD_WM8400)	+= wm8400-core.o
 wm831x-objs			:= wm831x-core.o wm831x-irq.o wm831x-otp.o
 wm831x-objs			+= wm831x-auxadc.o

drivers/mfd/arizona-core.c

@@ -554,6 +554,7 @@ static int arizona_of_get_core_pdata(struct arizona *arizona)
 const struct of_device_id arizona_of_match[] = {
 	{ .compatible = "wlf,wm5102", .data = (void *)WM5102 },
 	{ .compatible = "wlf,wm5110", .data = (void *)WM5110 },
+	{ .compatible = "wlf,wm8997", .data = (void *)WM8997 },
 	{},
 };
 EXPORT_SYMBOL_GPL(arizona_of_match);
@@ -586,6 +587,15 @@ static struct mfd_cell wm5110_devs[] = {
 	{ .name = "wm5110-codec" },
 };
 
+static struct mfd_cell wm8997_devs[] = {
+	{ .name = "arizona-micsupp" },
+	{ .name = "arizona-extcon" },
+	{ .name = "arizona-gpio" },
+	{ .name = "arizona-haptics" },
+	{ .name = "arizona-pwm" },
+	{ .name = "wm8997-codec" },
+};
+
 int arizona_dev_init(struct arizona *arizona)
 {
 	struct device *dev = arizona->dev;
@@ -608,6 +618,7 @@ int arizona_dev_init(struct arizona *arizona)
 	switch (arizona->type) {
 	case WM5102:
 	case WM5110:
+	case WM8997:
 		for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
 			arizona->core_supplies[i].supply
 				= wm5102_core_supplies[i];
@@ -683,6 +694,7 @@ int arizona_dev_init(struct arizona *arizona)
 	switch (reg) {
 	case 0x5102:
 	case 0x5110:
+	case 0x8997:
 		break;
 	default:
 		dev_err(arizona->dev, "Unknown device ID: %x\n", reg);
@@ -767,6 +779,17 @@ int arizona_dev_init(struct arizona *arizona)
 		}
 		apply_patch = wm5110_patch;
 		break;
+#endif
+#ifdef CONFIG_MFD_WM8997
+	case 0x8997:
+		type_name = "WM8997";
+		if (arizona->type != WM8997) {
+			dev_err(arizona->dev, "WM8997 registered as %d\n",
+				arizona->type);
+			arizona->type = WM8997;
+		}
+		apply_patch = wm8997_patch;
+		break;
 #endif
 	default:
 		dev_err(arizona->dev, "Unknown device ID %x\n", reg);
@@ -934,6 +957,10 @@ int arizona_dev_init(struct arizona *arizona)
 		ret = mfd_add_devices(arizona->dev, -1, wm5110_devs,
 				      ARRAY_SIZE(wm5110_devs), NULL, 0, NULL);
 		break;
+	case WM8997:
+		ret = mfd_add_devices(arizona->dev, -1, wm8997_devs,
+				      ARRAY_SIZE(wm8997_devs), NULL, 0, NULL);
+		break;
 	}
 
 	if (ret != 0) {

drivers/mfd/arizona-i2c.c

@@ -44,6 +44,11 @@ static int arizona_i2c_probe(struct i2c_client *i2c,
 	case WM5110:
 		regmap_config = &wm5110_i2c_regmap;
 		break;
+#endif
+#ifdef CONFIG_MFD_WM8997
+	case WM8997:
+		regmap_config = &wm8997_i2c_regmap;
+		break;
 #endif
 	default:
 		dev_err(&i2c->dev, "Unknown device type %ld\n",
@@ -80,6 +85,7 @@ static int arizona_i2c_remove(struct i2c_client *i2c)
 static const struct i2c_device_id arizona_i2c_id[] = {
 	{ "wm5102", WM5102 },
 	{ "wm5110", WM5110 },
+	{ "wm8997", WM8997 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);

drivers/mfd/arizona-irq.c

@@ -208,6 +208,14 @@ int arizona_irq_init(struct arizona *arizona)
 		ctrlif_error = false;
 		break;
 #endif
+#ifdef CONFIG_MFD_WM8997
+	case WM8997:
+		aod = &wm8997_aod;
+		irq = &wm8997_irq;
+
+		ctrlif_error = false;
+		break;
+#endif
 	default:
 		BUG_ON("Unknown Arizona class device" == NULL);
 		return -EINVAL;

drivers/mfd/arizona.h

@@ -25,6 +25,8 @@ extern const struct regmap_config wm5102_spi_regmap;
 extern const struct regmap_config wm5110_i2c_regmap;
 extern const struct regmap_config wm5110_spi_regmap;
 
+extern const struct regmap_config wm8997_i2c_regmap;
+
 extern const struct dev_pm_ops arizona_pm_ops;
 
 extern const struct of_device_id arizona_of_match[];
@@ -35,6 +37,9 @@ extern const struct regmap_irq_chip wm5102_irq;
 extern const struct regmap_irq_chip wm5110_aod;
 extern const struct regmap_irq_chip wm5110_irq;
 
+extern const struct regmap_irq_chip wm8997_aod;
+extern const struct regmap_irq_chip wm8997_irq;
+
 int arizona_dev_init(struct arizona *arizona);
 int arizona_dev_exit(struct arizona *arizona);
 int arizona_irq_init(struct arizona *arizona);

include/linux/mfd/arizona/core.h

@@ -23,6 +23,7 @@
 enum arizona_type {
 	WM5102 = 1,
 	WM5110 = 2,
+	WM8997 = 3,
 };
 
 #define ARIZONA_IRQ_GP1                    0
@@ -121,5 +122,6 @@ int arizona_set_irq_wake(struct arizona *arizona, int irq, int on);
 
 int wm5102_patch(struct arizona *arizona);
 int wm5110_patch(struct arizona *arizona);
+int wm8997_patch(struct arizona *arizona);
 
 #endif