[PATCH 3/3] pinctrl: madera: Add configuration for Cirrus Logic CS47L92

[Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>]

This adds the pinctrl configuration for the CS47L92 codec to
the madera pinctrl driver.

Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
---
 drivers/pinctrl/cirrus/Kconfig               |  3 +++
 drivers/pinctrl/cirrus/Makefile              |  3 +++
 drivers/pinctrl/cirrus/pinctrl-cs47l92.c     | 40 ++++++++++++++++++++++++++++
 drivers/pinctrl/cirrus/pinctrl-madera-core.c | 16 +++++++++++
 drivers/pinctrl/cirrus/pinctrl-madera.h      |  1 +
 5 files changed, 63 insertions(+)
 create mode 100644 drivers/pinctrl/cirrus/pinctrl-cs47l92.c

diff --git a/drivers/pinctrl/cirrus/Kconfig b/drivers/pinctrl/cirrus/Kconfig
index ef01a0b062730..f1806fd781a05 100644
--- a/drivers/pinctrl/cirrus/Kconfig
+++ b/drivers/pinctrl/cirrus/Kconfig
@@ -26,3 +26,6 @@ config PINCTRL_CS47L85
 
 config PINCTRL_CS47L90
 	bool
+
+config PINCTRL_CS47L92
+	bool
diff --git a/drivers/pinctrl/cirrus/Makefile b/drivers/pinctrl/cirrus/Makefile
index 491bcb658d8e1..a484518c840e3 100644
--- a/drivers/pinctrl/cirrus/Makefile
+++ b/drivers/pinctrl/cirrus/Makefile
@@ -15,5 +15,8 @@ endif
 ifeq ($(CONFIG_PINCTRL_CS47L90),y)
 pinctrl-madera-objs		+= pinctrl-cs47l90.o
 endif
+ifeq ($(CONFIG_PINCTRL_CS47L92),y)
+pinctrl-madera-objs		+= pinctrl-cs47l92.o
+endif
 
 obj-$(CONFIG_PINCTRL_MADERA)	+= pinctrl-madera.o
diff --git a/drivers/pinctrl/cirrus/pinctrl-cs47l92.c b/drivers/pinctrl/cirrus/pinctrl-cs47l92.c
new file mode 100644
index 0000000000000..4e409734334e9
--- /dev/null
+++ b/drivers/pinctrl/cirrus/pinctrl-cs47l92.c
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Pinctrl for Cirrus Logic CS47L92
+ *
+ * Copyright (C) 2018-2019 Cirrus Logic, Inc. and
+ *                         Cirrus Logic International Semiconductor Ltd.
+ */
+
+#include <linux/err.h>
+#include <linux/mfd/madera/core.h>
+
+#include "pinctrl-madera.h"
+
+/*
+ * The alt func groups are the most commonly used functions we place these at
+ * the lower function indexes for convenience, and the less commonly used gpio
+ * functions at higher indexes.
+ *
+ * To stay consistent with the datasheet the function names are the same as
+ * the group names for that function's pins
+ *
+ * Note - all 1 less than in datasheet because these are zero-indexed
+ */
+static const unsigned int cs47l92_spk1_pins[] = { 2, 3 };
+static const unsigned int cs47l92_aif1_pins[] = { 4, 5, 6, 7 };
+static const unsigned int cs47l92_aif2_pins[] = { 8, 9, 10, 11 };
+static const unsigned int cs47l92_aif3_pins[] = { 12, 13, 14, 15 };
+
+static const struct madera_pin_groups cs47l92_pin_groups[] = {
+	{ "aif1", cs47l92_aif1_pins, ARRAY_SIZE(cs47l92_aif1_pins) },
+	{ "aif2", cs47l92_aif2_pins, ARRAY_SIZE(cs47l92_aif2_pins) },
+	{ "aif3", cs47l92_aif3_pins, ARRAY_SIZE(cs47l92_aif3_pins) },
+	{ "pdmspk1", cs47l92_spk1_pins, ARRAY_SIZE(cs47l92_spk1_pins) },
+};
+
+const struct madera_pin_chip cs47l92_pin_chip = {
+	.n_pins = CS47L92_NUM_GPIOS,
+	.pin_groups = cs47l92_pin_groups,
+	.n_pin_groups = ARRAY_SIZE(cs47l92_pin_groups),
+};
diff --git a/drivers/pinctrl/cirrus/pinctrl-madera-core.c b/drivers/pinctrl/cirrus/pinctrl-madera-core.c
index 64281ad5c1b9e..e2f72dcce4c9c 100644
--- a/drivers/pinctrl/cirrus/pinctrl-madera-core.c
+++ b/drivers/pinctrl/cirrus/pinctrl-madera-core.c
@@ -396,6 +396,16 @@ static const struct {
 		.group_names = madera_pin_single_group_names,
 		.func = 0x157
 	},
+	{
+		.name = "aux-pdm-clk",
+		.group_names = madera_pin_single_group_names,
+		.func = 0x280
+	},
+	{
+		.name = "aux-pdm-dat",
+		.group_names = madera_pin_single_group_names,
+		.func = 0x281
+	},
 };
 
 static u16 madera_pin_make_drv_str(struct madera_pin_private *priv,
@@ -1022,6 +1032,12 @@ static int madera_pin_probe(struct platform_device *pdev)
 		if (IS_ENABLED(CONFIG_PINCTRL_CS47L90))
 			priv->chip = &cs47l90_pin_chip;
 		break;
+	case CS42L92:
+	case CS47L92:
+	case CS47L93:
+		if (IS_ENABLED(CONFIG_PINCTRL_CS47L92))
+			priv->chip = &cs47l92_pin_chip;
+		break;
 	default:
 		break;
 	}
diff --git a/drivers/pinctrl/cirrus/pinctrl-madera.h b/drivers/pinctrl/cirrus/pinctrl-madera.h
index a10f0238dd928..c16a4dc19a2a0 100644
--- a/drivers/pinctrl/cirrus/pinctrl-madera.h
+++ b/drivers/pinctrl/cirrus/pinctrl-madera.h
@@ -34,5 +34,6 @@ extern const struct madera_pin_chip cs47l15_pin_chip;
 extern const struct madera_pin_chip cs47l35_pin_chip;
 extern const struct madera_pin_chip cs47l85_pin_chip;
 extern const struct madera_pin_chip cs47l90_pin_chip;
+extern const struct madera_pin_chip cs47l92_pin_chip;
 
 #endif
-- 
2.11.0