pinctrl: madera: Add configuration for Cirrus Logic CS47L15

This adds the pinctrl configuration for the CS47L15 codec to
the madera pinctrl driver.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20190722091015.20884-2-ckeepax@opensource.cirrus.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/cirrus/Kconfig b/drivers/pinctrl/cirrus/Kconfig
index e546a6b..ef01a0b 100644 (file)
--- a/drivers/pinctrl/cirrus/Kconfig
+++ b/drivers/pinctrl/cirrus/Kconfig
@@ -15,6 +15,9 @@ config PINCTRL_MADERA
        select PINMUX
        select GENERIC_PINCONF
 
+config PINCTRL_CS47L15
+       bool
+
 config PINCTRL_CS47L35
        bool
 

diff --git a/drivers/pinctrl/cirrus/Makefile b/drivers/pinctrl/cirrus/Makefile
index 0c5deb6..491bcb6 100644 (file)
--- a/drivers/pinctrl/cirrus/Makefile
+++ b/drivers/pinctrl/cirrus/Makefile
@@ -3,6 +3,9 @@
 obj-$(CONFIG_PINCTRL_LOCHNAGAR)        += pinctrl-lochnagar.o
 
 pinctrl-madera-objs            := pinctrl-madera-core.o
+ifeq ($(CONFIG_PINCTRL_CS47L15),y)
+pinctrl-madera-objs            += pinctrl-cs47l15.o
+endif
 ifeq ($(CONFIG_PINCTRL_CS47L35),y)
 pinctrl-madera-objs            += pinctrl-cs47l35.o
 endif

diff --git a/drivers/pinctrl/cirrus/pinctrl-cs47l15.c b/drivers/pinctrl/cirrus/pinctrl-cs47l15.c
new file mode 100644 (file)
index 0000000..a4bfec5
--- /dev/null
+++ b/drivers/pinctrl/cirrus/pinctrl-cs47l15.c
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Pinctrl for Cirrus Logic CS47L15
+ *
+ * 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 cs47l15_aif1_pins[] = { 0, 1, 2, 3 };
+static const unsigned int cs47l15_aif2_pins[] = { 4, 5, 6, 7 };
+static const unsigned int cs47l15_aif3_pins[] = { 8, 9, 10, 11 };
+static const unsigned int cs47l15_spk1_pins[] = { 12, 13, 14 };
+
+static const struct madera_pin_groups cs47l15_pin_groups[] = {
+       { "aif1", cs47l15_aif1_pins, ARRAY_SIZE(cs47l15_aif1_pins) },
+       { "aif2", cs47l15_aif2_pins, ARRAY_SIZE(cs47l15_aif2_pins) },
+       { "aif3", cs47l15_aif3_pins, ARRAY_SIZE(cs47l15_aif3_pins) },
+       { "pdmspk1", cs47l15_spk1_pins, ARRAY_SIZE(cs47l15_spk1_pins) },
+};
+
+const struct madera_pin_chip cs47l15_pin_chip = {
+       .n_pins = CS47L15_NUM_GPIOS,
+       .pin_groups = cs47l15_pin_groups,
+       .n_pin_groups = ARRAY_SIZE(cs47l15_pin_groups),
+};

diff --git a/drivers/pinctrl/cirrus/pinctrl-madera-core.c b/drivers/pinctrl/cirrus/pinctrl-madera-core.c
index 0c7fa1f..64281ad 100644 (file)
--- a/drivers/pinctrl/cirrus/pinctrl-madera-core.c
+++ b/drivers/pinctrl/cirrus/pinctrl-madera-core.c
@@ -1004,6 +1004,10 @@ static int madera_pin_probe(struct platform_device *pdev)
        pdev->dev.of_node = madera->dev->of_node;
 
        switch (madera->type) {
+       case CS47L15:
+               if (IS_ENABLED(CONFIG_PINCTRL_CS47L15))
+                       priv->chip = &cs47l15_pin_chip;
+               break;
        case CS47L35:
                if (IS_ENABLED(CONFIG_PINCTRL_CS47L35))
                        priv->chip = &cs47l35_pin_chip;

diff --git a/drivers/pinctrl/cirrus/pinctrl-madera.h b/drivers/pinctrl/cirrus/pinctrl-madera.h
index 4ae1391..a10f023 100644 (file)
--- a/drivers/pinctrl/cirrus/pinctrl-madera.h
+++ b/drivers/pinctrl/cirrus/pinctrl-madera.h
@@ -30,6 +30,7 @@ struct madera_pin_private {
        struct pinctrl_dev *pctl;
 };
 
+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;