mfd: madera: Add Madera core support for CS47L15

This patch adds all the core support and defines for the Cirrus
Logic CS47L15 smart audio CODEC.

Registers or fields are named MADERA_* if it is part of the
common hardware platform and does not conflict with any other
Madera codecs. It is named CS47L15_* if it is unique to CS47L15
and conflicts with definitions on other codecs.
Signed-off-by: NRichard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: NCharles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

drivers/mfd/Kconfig

@@ -260,6 +260,13 @@ config MFD_MADERA_SPI
 	  Support for the Cirrus Logic Madera platform audio SoC
 	  core functionality controlled via SPI.
 
+config MFD_CS47L15
+	bool "Cirrus Logic CS47L15"
+	select PINCTRL_CS47L15
+	depends on MFD_MADERA
+	help
+	  Support for Cirrus Logic CS47L15 Smart Codec
+
 config MFD_CS47L35
 	bool "Cirrus Logic CS47L35"
 	select PINCTRL_CS47L35

drivers/mfd/Makefile

@@ -75,6 +75,9 @@ obj-$(CONFIG_MFD_WM8994)	+= wm8994.o
 obj-$(CONFIG_MFD_WM97xx)	+= wm97xx-core.o
 
 madera-objs			:= madera-core.o
+ifeq ($(CONFIG_MFD_CS47L15),y)
+madera-objs			+= cs47l15-tables.o
+endif
 ifeq ($(CONFIG_MFD_CS47L35),y)
 madera-objs			+= cs47l35-tables.o
 endif

drivers/mfd/madera-core.c

@@ -31,6 +31,7 @@
 
 #include "madera.h"
 
+#define CS47L15_SILICON_ID	0x6370
 #define CS47L35_SILICON_ID	0x6360
 #define CS47L85_SILICON_ID	0x6338
 #define CS47L90_SILICON_ID	0x6364
@@ -46,6 +47,28 @@ static const struct mfd_cell madera_ldo1_devs[] = {
 	{ .name = "madera-ldo1" },
 };
 
+static const char * const cs47l15_supplies[] = {
+	"MICVDD",
+	"CPVDD1",
+	"SPKVDD",
+};
+
+static const struct mfd_cell cs47l15_devs[] = {
+	{ .name = "madera-pinctrl", },
+	{ .name = "madera-irq" },
+	{ .name = "madera-gpio" },
+	{
+		.name = "madera-extcon",
+		.parent_supplies = cs47l15_supplies,
+		.num_parent_supplies = 1, /* We only need MICVDD */
+	},
+	{
+		.name = "cs47l15-codec",
+		.parent_supplies = cs47l15_supplies,
+		.num_parent_supplies = ARRAY_SIZE(cs47l15_supplies),
+	},
+};
+
 static const char * const cs47l35_supplies[] = {
 	"MICVDD",
 	"DBVDD2",
@@ -129,6 +152,8 @@ static const struct mfd_cell cs47l90_devs[] = {
 const char *madera_name_from_type(enum madera_type type)
 {
 	switch (type) {
+	case CS47L15:
+		return "CS47L15";
 	case CS47L35:
 		return "CS47L35";
 	case CS47L85:
@@ -291,6 +316,7 @@ const struct dev_pm_ops madera_pm_ops = {
 EXPORT_SYMBOL_GPL(madera_pm_ops);
 
 const struct of_device_id madera_of_match[] = {
+	{ .compatible = "cirrus,cs47l15", .data = (void *)CS47L15 },
 	{ .compatible = "cirrus,cs47l35", .data = (void *)CS47L35 },
 	{ .compatible = "cirrus,cs47l85", .data = (void *)CS47L85 },
 	{ .compatible = "cirrus,cs47l90", .data = (void *)CS47L90 },
@@ -339,6 +365,10 @@ static void madera_set_micbias_info(struct madera *madera)
 	 * childbiases for each micbias. Unspecified values default to 0.
 	 */
 	switch (madera->type) {
+	case CS47L15:
+		madera->num_micbias = 1;
+		madera->num_childbias[0] = 3;
+		return;
 	case CS47L35:
 		madera->num_micbias = 2;
 		madera->num_childbias[0] = 2;
@@ -402,6 +432,7 @@ int madera_dev_init(struct madera *madera)
 	 * No devm_ because we need to control shutdown order of children.
 	 */
 	switch (madera->type) {
+	case CS47L15:
 	case CS47L35:
 	case CS47L90:
 	case CS47L91:
@@ -471,6 +502,19 @@ int madera_dev_init(struct madera *madera)
 	}
 
 	switch (hwid) {
+	case CS47L15_SILICON_ID:
+		if (IS_ENABLED(CONFIG_MFD_CS47L15)) {
+			switch (madera->type) {
+			case CS47L15:
+				patch_fn = &cs47l15_patch;
+				mfd_devs = cs47l15_devs;
+				n_devs = ARRAY_SIZE(cs47l15_devs);
+				break;
+			default:
+				break;
+			}
+		}
+		break;
 	case CS47L35_SILICON_ID:
 		if (IS_ENABLED(CONFIG_MFD_CS47L35)) {
 			switch (madera->type) {

drivers/mfd/madera-i2c.c

@@ -39,6 +39,12 @@ static int madera_i2c_probe(struct i2c_client *i2c,
 		type = id->driver_data;
 
 	switch (type) {
+	case CS47L15:
+		if (IS_ENABLED(CONFIG_MFD_CS47L15)) {
+			regmap_16bit_config = &cs47l15_16bit_i2c_regmap;
+			regmap_32bit_config = &cs47l15_32bit_i2c_regmap;
+		}
+		break;
 	case CS47L35:
 		if (IS_ENABLED(CONFIG_MFD_CS47L35)) {
 			regmap_16bit_config = &cs47l35_16bit_i2c_regmap;
@@ -113,6 +119,7 @@ static int madera_i2c_remove(struct i2c_client *i2c)
 }
 
 static const struct i2c_device_id madera_i2c_id[] = {
+	{ "cs47l15", CS47L15 },
 	{ "cs47l35", CS47L35 },
 	{ "cs47l85", CS47L85 },
 	{ "cs47l90", CS47L90 },

drivers/mfd/madera-spi.c

@@ -39,6 +39,12 @@ static int madera_spi_probe(struct spi_device *spi)
 		type = id->driver_data;
 
 	switch (type) {
+	case CS47L15:
+		if (IS_ENABLED(CONFIG_MFD_CS47L15)) {
+			regmap_16bit_config = &cs47l15_16bit_spi_regmap;
+			regmap_32bit_config = &cs47l15_32bit_spi_regmap;
+		}
+		break;
 	case CS47L35:
 		if (IS_ENABLED(CONFIG_MFD_CS47L35)) {
 			regmap_16bit_config = &cs47l35_16bit_spi_regmap;
@@ -112,6 +118,7 @@ static int madera_spi_remove(struct spi_device *spi)
 }
 
 static const struct spi_device_id madera_spi_ids[] = {
+	{ "cs47l15", CS47L15 },
 	{ "cs47l35", CS47L35 },
 	{ "cs47l85", CS47L85 },
 	{ "cs47l90", CS47L90 },

drivers/mfd/madera.h

@@ -24,6 +24,12 @@ int madera_dev_exit(struct madera *madera);
 
 const char *madera_name_from_type(enum madera_type type);
 
+extern const struct regmap_config cs47l15_16bit_spi_regmap;
+extern const struct regmap_config cs47l15_32bit_spi_regmap;
+extern const struct regmap_config cs47l15_16bit_i2c_regmap;
+extern const struct regmap_config cs47l15_32bit_i2c_regmap;
+int cs47l15_patch(struct madera *madera);
+
 extern const struct regmap_config cs47l35_16bit_spi_regmap;
 extern const struct regmap_config cs47l35_32bit_spi_regmap;
 extern const struct regmap_config cs47l35_16bit_i2c_regmap;

include/linux/mfd/madera/core.h

@@ -27,11 +27,13 @@ enum madera_type {
 	CS47L90 = 3,
 	CS47L91 = 4,
 	WM1840 = 7,
+	CS47L15 = 8,
 };
 
 #define MADERA_MAX_CORE_SUPPLIES	2
 #define MADERA_MAX_GPIOS		40
 
+#define CS47L15_NUM_GPIOS		15
 #define CS47L35_NUM_GPIOS		16
 #define CS47L85_NUM_GPIOS		40
 #define CS47L90_NUM_GPIOS		38

include/linux/mfd/madera/registers.h

@@ -244,6 +244,8 @@
 #define MADERA_IN6R_CONTROL				0x33C
 #define MADERA_ADC_DIGITAL_VOLUME_6R			0x33D
 #define MADERA_DMIC6R_CONTROL				0x33E
+#define CS47L15_ADC_INT_BIAS				0x3A8
+#define CS47L15_PGA_BIAS_SEL				0x3C4
 #define MADERA_OUTPUT_ENABLES_1				0x400
 #define MADERA_OUTPUT_STATUS_1				0x401
 #define MADERA_RAW_OUTPUT_STATUS_1			0x406
@@ -1202,6 +1204,8 @@
 #define MADERA_GPIO1_CTRL_2				0x1701
 #define MADERA_GPIO2_CTRL_1				0x1702
 #define MADERA_GPIO2_CTRL_2				0x1703
+#define MADERA_GPIO15_CTRL_1				0x171C
+#define MADERA_GPIO15_CTRL_2				0x171D
 #define MADERA_GPIO16_CTRL_1				0x171E
 #define MADERA_GPIO16_CTRL_2				0x171F
 #define MADERA_GPIO38_CTRL_1				0x174A
@@ -1232,6 +1236,7 @@
 #define MADERA_IRQ2_CTRL				0x1A82
 #define MADERA_INTERRUPT_RAW_STATUS_1			0x1AA0
 #define MADERA_WSEQ_SEQUENCE_1				0x3000
+#define MADERA_WSEQ_SEQUENCE_225			0x31C0
 #define MADERA_WSEQ_SEQUENCE_252			0x31F6
 #define CS47L35_OTP_HPDET_CAL_1				0x31F8
 #define CS47L35_OTP_HPDET_CAL_2				0x31FA