[U-Boot] [PATCH u-boot 08/19] pinctrl: meson: rework gx pmx function

Neil Armstrong narmstrong at baylibre.com
Fri Nov 9 15:26:47 UTC 2018


From: Jerome Brunet <jbrunet at baylibre.com>

In preparation of supporting the new Amlogix AGX SoCs, we need to move
the Amlogic GX pinmux functions out of the common code to be able to
add a different set of SoC specific pinmux functions for AXG.

Signed-off-by: Jerome Brunet <jbrunet at baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong at baylibre.com>
---
 drivers/pinctrl/meson/Kconfig                |   8 +-
 drivers/pinctrl/meson/Makefile               |   1 +
 drivers/pinctrl/meson/pinctrl-meson-gx-pmx.c |  97 ++++++++++++++++++++++++
 drivers/pinctrl/meson/pinctrl-meson-gx.h     |  48 ++++++++++++
 drivers/pinctrl/meson/pinctrl-meson-gxbb.c   |   6 +-
 drivers/pinctrl/meson/pinctrl-meson-gxl.c    |   6 +-
 drivers/pinctrl/meson/pinctrl-meson.c        | 109 ++++-----------------------
 drivers/pinctrl/meson/pinctrl-meson.h        |  37 +++++----
 8 files changed, 191 insertions(+), 121 deletions(-)
 create mode 100644 drivers/pinctrl/meson/pinctrl-meson-gx-pmx.c
 create mode 100644 drivers/pinctrl/meson/pinctrl-meson-gx.h

diff --git a/drivers/pinctrl/meson/Kconfig b/drivers/pinctrl/meson/Kconfig
index 27ba890..15a8d9c 100644
--- a/drivers/pinctrl/meson/Kconfig
+++ b/drivers/pinctrl/meson/Kconfig
@@ -4,12 +4,16 @@ config PINCTRL_MESON
 	depends on PINCTRL_GENERIC
 	bool
 
+config PINCTRL_MESON_GX_PMX
+	select PINCTRL_MESON
+	bool
+
 config PINCTRL_MESON_GXBB
 	bool "Amlogic Meson GXBB SoC pinctrl driver"
-	select PINCTRL_MESON
+	select PINCTRL_MESON_GX_PMX
 
 config PINCTRL_MESON_GXL
 	bool "Amlogic Meson GXL SoC pinctrl driver"
-	select PINCTRL_MESON
+	select PINCTRL_MESON_GX_PMX
 
 endif
diff --git a/drivers/pinctrl/meson/Makefile b/drivers/pinctrl/meson/Makefile
index 965092c..30b6875 100644
--- a/drivers/pinctrl/meson/Makefile
+++ b/drivers/pinctrl/meson/Makefile
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0+
 
 obj-y					+= pinctrl-meson.o
+obj-$(CONFIG_PINCTRL_MESON_GX_PMX)	+= pinctrl-meson-gx-pmx.o
 obj-$(CONFIG_PINCTRL_MESON_GXBB)	+= pinctrl-meson-gxbb.o
 obj-$(CONFIG_PINCTRL_MESON_GXL)		+= pinctrl-meson-gxl.o
diff --git a/drivers/pinctrl/meson/pinctrl-meson-gx-pmx.c b/drivers/pinctrl/meson/pinctrl-meson-gx-pmx.c
new file mode 100644
index 0000000..fc1538e
--- /dev/null
+++ b/drivers/pinctrl/meson/pinctrl-meson-gx-pmx.c
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2016 - Beniamino Galvani <b.galvani at gmail.com>
+ */
+
+#include <asm/gpio.h>
+#include <common.h>
+#include <dm.h>
+#include <dm/pinctrl.h>
+#include <linux/io.h>
+#include "pinctrl-meson-gx.h"
+
+static void meson_gx_pinmux_disable_other_groups(struct meson_pinctrl *priv,
+						 unsigned int pin,
+						 int sel_group)
+{
+	struct meson_pmx_group *group;
+	struct meson_gx_pmx_data *pmx_data;
+	void __iomem *addr;
+	int i, j;
+
+	for (i = 0; i < priv->data->num_groups; i++) {
+		group = &priv->data->groups[i];
+		pmx_data = (struct meson_gx_pmx_data *)group->data;
+		if (pmx_data->is_gpio || i == sel_group)
+			continue;
+
+		for (j = 0; j < group->num_pins; j++) {
+			if (group->pins[j] == pin) {
+				/* We have found a group using the pin */
+				debug("pinmux: disabling %s\n", group->name);
+				addr = priv->reg_mux + pmx_data->reg * 4;
+				writel(readl(addr) & ~BIT(pmx_data->bit), addr);
+			}
+		}
+	}
+}
+
+static int meson_gx_pinmux_group_set(struct udevice *dev,
+				     unsigned int group_selector,
+				     unsigned int func_selector)
+{
+	struct meson_pinctrl *priv = dev_get_priv(dev);
+	const struct meson_pmx_group *group;
+	const struct meson_pmx_func *func;
+	struct meson_gx_pmx_data *pmx_data;
+	void __iomem *addr;
+	int i;
+
+	group = &priv->data->groups[group_selector];
+	pmx_data = (struct meson_gx_pmx_data *)group->data;
+	func = &priv->data->funcs[func_selector];
+
+	debug("pinmux: set group %s func %s\n", group->name, func->name);
+
+	/*
+	 * Disable groups using the same pins.
+	 * The selected group is not disabled to avoid glitches.
+	 */
+	for (i = 0; i < group->num_pins; i++) {
+		meson_gx_pinmux_disable_other_groups(priv,
+						     group->pins[i],
+						     group_selector);
+	}
+
+	/* Function 0 (GPIO) doesn't need any additional setting */
+	if (func_selector) {
+		addr = priv->reg_mux + pmx_data->reg * 4;
+		writel(readl(addr) | BIT(pmx_data->bit), addr);
+	}
+
+	return 0;
+}
+
+const struct pinctrl_ops meson_gx_pinctrl_ops = {
+	.get_groups_count = meson_pinctrl_get_groups_count,
+	.get_group_name = meson_pinctrl_get_group_name,
+	.get_functions_count = meson_pinmux_get_functions_count,
+	.get_function_name = meson_pinmux_get_function_name,
+	.pinmux_group_set = meson_gx_pinmux_group_set,
+	.set_state = pinctrl_generic_set_state,
+};
+
+static const struct dm_gpio_ops meson_gx_gpio_ops = {
+	.set_value = meson_gpio_set,
+	.get_value = meson_gpio_get,
+	.get_function = meson_gpio_get_direction,
+	.direction_input = meson_gpio_direction_input,
+	.direction_output = meson_gpio_direction_output,
+};
+
+const struct driver meson_gx_gpio_driver = {
+	.name	= "meson-gx-gpio",
+	.id	= UCLASS_GPIO,
+	.probe	= meson_gpio_probe,
+	.ops	= &meson_gx_gpio_ops,
+};
diff --git a/drivers/pinctrl/meson/pinctrl-meson-gx.h b/drivers/pinctrl/meson/pinctrl-meson-gx.h
new file mode 100644
index 0000000..4c1aa1a
--- /dev/null
+++ b/drivers/pinctrl/meson/pinctrl-meson-gx.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2014 Beniamino Galvani <b.galvani at gmail.com>
+ * Copyright (C) 2017 Jerome Brunet  <jbrunet at baylibre.com>
+ */
+
+#ifndef __PINCTRL_MESON_GX_H__
+#define __PINCTRL_MESON_GX_H__
+
+#include "pinctrl-meson.h"
+
+struct meson_gx_pmx_data {
+	bool is_gpio;
+	unsigned int reg;
+	unsigned int bit;
+};
+
+#define PMX_DATA(r, b, g)						\
+	{								\
+		.reg = r,						\
+		.bit = b,						\
+		.is_gpio = g,						\
+	}
+
+#define GROUP(grp, r, b)						\
+	{								\
+		.name = #grp,						\
+		.pins = grp ## _pins,					\
+		.num_pins = ARRAY_SIZE(grp ## _pins),			\
+			.data = (const struct meson_gx_pmx_data[]){	\
+			PMX_DATA(r, b, false),				\
+		},							\
+	}
+
+#define GPIO_GROUP(gpio, b)						\
+	{								\
+		.name = #gpio,						\
+		.pins = (const unsigned int[]){ PIN(gpio, b) },		\
+		.num_pins = 1,						\
+		.data = (const struct meson_gx_pmx_data[]){		\
+			PMX_DATA(0, 0, true),				\
+		},							\
+	}
+
+extern const struct pinctrl_ops meson_gx_pinctrl_ops;
+extern const struct driver meson_gx_gpio_driver;
+
+#endif /* __PINCTRL_MESON_GX_H__ */
diff --git a/drivers/pinctrl/meson/pinctrl-meson-gxbb.c b/drivers/pinctrl/meson/pinctrl-meson-gxbb.c
index a8e47e3..22e8b05 100644
--- a/drivers/pinctrl/meson/pinctrl-meson-gxbb.c
+++ b/drivers/pinctrl/meson/pinctrl-meson-gxbb.c
@@ -11,7 +11,7 @@
 #include <dm/pinctrl.h>
 #include <dt-bindings/gpio/meson-gxbb-gpio.h>
 
-#include "pinctrl-meson.h"
+#include "pinctrl-meson-gx.h"
 
 #define EE_OFF	15
 
@@ -417,6 +417,7 @@ struct meson_pinctrl_data meson_gxbb_periphs_pinctrl_data = {
 	.num_groups	= ARRAY_SIZE(meson_gxbb_periphs_groups),
 	.num_funcs	= ARRAY_SIZE(meson_gxbb_periphs_functions),
 	.num_banks	= ARRAY_SIZE(meson_gxbb_periphs_banks),
+	.gpio_driver	= &meson_gx_gpio_driver,
 };
 
 struct meson_pinctrl_data meson_gxbb_aobus_pinctrl_data = {
@@ -429,6 +430,7 @@ struct meson_pinctrl_data meson_gxbb_aobus_pinctrl_data = {
 	.num_groups	= ARRAY_SIZE(meson_gxbb_aobus_groups),
 	.num_funcs	= ARRAY_SIZE(meson_gxbb_aobus_functions),
 	.num_banks	= ARRAY_SIZE(meson_gxbb_aobus_banks),
+	.gpio_driver	= &meson_gx_gpio_driver,
 };
 
 static const struct udevice_id meson_gxbb_pinctrl_match[] = {
@@ -449,5 +451,5 @@ U_BOOT_DRIVER(meson_gxbb_pinctrl) = {
 	.of_match = of_match_ptr(meson_gxbb_pinctrl_match),
 	.probe = meson_pinctrl_probe,
 	.priv_auto_alloc_size = sizeof(struct meson_pinctrl),
-	.ops = &meson_pinctrl_ops,
+	.ops = &meson_gx_pinctrl_ops,
 };
diff --git a/drivers/pinctrl/meson/pinctrl-meson-gxl.c b/drivers/pinctrl/meson/pinctrl-meson-gxl.c
index ba6e353..1819eee 100644
--- a/drivers/pinctrl/meson/pinctrl-meson-gxl.c
+++ b/drivers/pinctrl/meson/pinctrl-meson-gxl.c
@@ -11,7 +11,7 @@
 #include <dm/pinctrl.h>
 #include <dt-bindings/gpio/meson-gxl-gpio.h>
 
-#include "pinctrl-meson.h"
+#include "pinctrl-meson-gx.h"
 
 #define EE_OFF	11
 
@@ -699,6 +699,7 @@ struct meson_pinctrl_data meson_gxl_periphs_pinctrl_data = {
 	.num_groups	= ARRAY_SIZE(meson_gxl_periphs_groups),
 	.num_funcs	= ARRAY_SIZE(meson_gxl_periphs_functions),
 	.num_banks	= ARRAY_SIZE(meson_gxl_periphs_banks),
+	.gpio_driver	= &meson_gx_gpio_driver,
 };
 
 struct meson_pinctrl_data meson_gxl_aobus_pinctrl_data = {
@@ -711,6 +712,7 @@ struct meson_pinctrl_data meson_gxl_aobus_pinctrl_data = {
 	.num_groups	= ARRAY_SIZE(meson_gxl_aobus_groups),
 	.num_funcs	= ARRAY_SIZE(meson_gxl_aobus_functions),
 	.num_banks	= ARRAY_SIZE(meson_gxl_aobus_banks),
+	.gpio_driver	= &meson_gx_gpio_driver,
 };
 
 static const struct udevice_id meson_gxl_pinctrl_match[] = {
@@ -731,5 +733,5 @@ U_BOOT_DRIVER(meson_gxl_pinctrl) = {
 	.of_match = of_match_ptr(meson_gxl_pinctrl_match),
 	.probe = meson_pinctrl_probe,
 	.priv_auto_alloc_size = sizeof(struct meson_pinctrl),
-	.ops = &meson_pinctrl_ops,
+	.ops = &meson_gx_pinctrl_ops,
 };
diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
index 387c241..0bd6152 100644
--- a/drivers/pinctrl/meson/pinctrl-meson.c
+++ b/drivers/pinctrl/meson/pinctrl-meson.c
@@ -20,15 +20,15 @@ DECLARE_GLOBAL_DATA_PTR;
 
 static const char *meson_pinctrl_dummy_name = "_dummy";
 
-static int meson_pinctrl_get_groups_count(struct udevice *dev)
+int meson_pinctrl_get_groups_count(struct udevice *dev)
 {
 	struct meson_pinctrl *priv = dev_get_priv(dev);
 
 	return priv->data->num_groups;
 }
 
-static const char *meson_pinctrl_get_group_name(struct udevice *dev,
-						unsigned selector)
+const char *meson_pinctrl_get_group_name(struct udevice *dev,
+					 unsigned int selector)
 {
 	struct meson_pinctrl *priv = dev_get_priv(dev);
 
@@ -38,87 +38,21 @@ static const char *meson_pinctrl_get_group_name(struct udevice *dev,
 	return priv->data->groups[selector].name;
 }
 
-static int meson_pinmux_get_functions_count(struct udevice *dev)
+int meson_pinmux_get_functions_count(struct udevice *dev)
 {
 	struct meson_pinctrl *priv = dev_get_priv(dev);
 
 	return priv->data->num_funcs;
 }
 
-static const char *meson_pinmux_get_function_name(struct udevice *dev,
-						  unsigned selector)
+const char *meson_pinmux_get_function_name(struct udevice *dev,
+					   unsigned int selector)
 {
 	struct meson_pinctrl *priv = dev_get_priv(dev);
 
 	return priv->data->funcs[selector].name;
 }
 
-static void meson_pinmux_disable_other_groups(struct meson_pinctrl *priv,
-					      unsigned int pin, int sel_group)
-{
-	struct meson_pmx_group *group;
-	void __iomem *addr;
-	int i, j;
-
-	for (i = 0; i < priv->data->num_groups; i++) {
-		group = &priv->data->groups[i];
-		if (group->is_gpio || i == sel_group)
-			continue;
-
-		for (j = 0; j < group->num_pins; j++) {
-			if (group->pins[j] == pin) {
-				/* We have found a group using the pin */
-				debug("pinmux: disabling %s\n", group->name);
-				addr = priv->reg_mux + group->reg * 4;
-				writel(readl(addr) & ~BIT(group->bit), addr);
-			}
-		}
-	}
-}
-
-static int meson_pinmux_group_set(struct udevice *dev,
-				  unsigned group_selector,
-				  unsigned func_selector)
-{
-	struct meson_pinctrl *priv = dev_get_priv(dev);
-	const struct meson_pmx_group *group;
-	const struct meson_pmx_func *func;
-	void __iomem *addr;
-	int i;
-
-	group = &priv->data->groups[group_selector];
-	func = &priv->data->funcs[func_selector];
-
-	debug("pinmux: set group %s func %s\n", group->name, func->name);
-
-	/*
-	 * Disable groups using the same pins.
-	 * The selected group is not disabled to avoid glitches.
-	 */
-	for (i = 0; i < group->num_pins; i++) {
-		meson_pinmux_disable_other_groups(priv,
-						  group->pins[i],
-						  group_selector);
-	}
-
-	/* Function 0 (GPIO) doesn't need any additional setting */
-	if (func_selector) {
-		addr = priv->reg_mux + group->reg * 4;
-		writel(readl(addr) | BIT(group->bit), addr);
-	}
-
-	return 0;
-}
-
-const struct pinctrl_ops meson_pinctrl_ops = {
-	.get_groups_count = meson_pinctrl_get_groups_count,
-	.get_group_name = meson_pinctrl_get_group_name,
-	.get_functions_count = meson_pinmux_get_functions_count,
-	.get_function_name = meson_pinmux_get_function_name,
-	.pinmux_group_set = meson_pinmux_group_set,
-	.set_state = pinctrl_generic_set_state,
-};
-
 static int meson_gpio_calc_reg_and_bit(struct udevice *dev, unsigned int offset,
 				       enum meson_reg_type reg_type,
 				       unsigned int *reg, unsigned int *bit)
@@ -149,7 +83,7 @@ static int meson_gpio_calc_reg_and_bit(struct udevice *dev, unsigned int offset,
 	return 0;
 }
 
-static int meson_gpio_get(struct udevice *dev, unsigned int offset)
+int meson_gpio_get(struct udevice *dev, unsigned int offset)
 {
 	struct meson_pinctrl *priv = dev_get_priv(dev->parent);
 	unsigned int reg, bit;
@@ -162,7 +96,7 @@ static int meson_gpio_get(struct udevice *dev, unsigned int offset)
 	return !!(readl(priv->reg_gpio + reg) & BIT(bit));
 }
 
-static int meson_gpio_set(struct udevice *dev, unsigned int offset, int value)
+int meson_gpio_set(struct udevice *dev, unsigned int offset, int value)
 {
 	struct meson_pinctrl *priv = dev_get_priv(dev->parent);
 	unsigned int reg, bit;
@@ -177,7 +111,7 @@ static int meson_gpio_set(struct udevice *dev, unsigned int offset, int value)
 	return 0;
 }
 
-static int meson_gpio_get_direction(struct udevice *dev, unsigned int offset)
+int meson_gpio_get_direction(struct udevice *dev, unsigned int offset)
 {
 	struct meson_pinctrl *priv = dev_get_priv(dev->parent);
 	unsigned int reg, bit, val;
@@ -192,7 +126,7 @@ static int meson_gpio_get_direction(struct udevice *dev, unsigned int offset)
 	return (val & BIT(bit)) ? GPIOF_INPUT : GPIOF_OUTPUT;
 }
 
-static int meson_gpio_direction_input(struct udevice *dev, unsigned int offset)
+int meson_gpio_direction_input(struct udevice *dev, unsigned int offset)
 {
 	struct meson_pinctrl *priv = dev_get_priv(dev->parent);
 	unsigned int reg, bit;
@@ -207,8 +141,8 @@ static int meson_gpio_direction_input(struct udevice *dev, unsigned int offset)
 	return 0;
 }
 
-static int meson_gpio_direction_output(struct udevice *dev,
-				       unsigned int offset, int value)
+int meson_gpio_direction_output(struct udevice *dev,
+				unsigned int offset, int value)
 {
 	struct meson_pinctrl *priv = dev_get_priv(dev->parent);
 	unsigned int reg, bit;
@@ -229,7 +163,7 @@ static int meson_gpio_direction_output(struct udevice *dev,
 	return 0;
 }
 
-static int meson_gpio_probe(struct udevice *dev)
+int meson_gpio_probe(struct udevice *dev)
 {
 	struct meson_pinctrl *priv = dev_get_priv(dev->parent);
 	struct gpio_dev_priv *uc_priv;
@@ -241,21 +175,6 @@ static int meson_gpio_probe(struct udevice *dev)
 	return 0;
 }
 
-static const struct dm_gpio_ops meson_gpio_ops = {
-	.set_value = meson_gpio_set,
-	.get_value = meson_gpio_get,
-	.get_function = meson_gpio_get_direction,
-	.direction_input = meson_gpio_direction_input,
-	.direction_output = meson_gpio_direction_output,
-};
-
-static struct driver meson_gpio_driver = {
-	.name	= "meson-gpio",
-	.id	= UCLASS_GPIO,
-	.probe	= meson_gpio_probe,
-	.ops	= &meson_gpio_ops,
-};
-
 static fdt_addr_t parse_address(int offset, const char *name, int na, int ns)
 {
 	int index, len = 0;
@@ -334,7 +253,7 @@ int meson_pinctrl_probe(struct udevice *dev)
 	sprintf(name, "meson-gpio");
 
 	/* Create child device UCLASS_GPIO and bind it */
-	device_bind(dev, &meson_gpio_driver, name, NULL, gpio, &gpio_dev);
+	device_bind(dev, priv->data->gpio_driver, name, NULL, gpio, &gpio_dev);
 	dev_set_of_offset(gpio_dev, gpio);
 
 	return 0;
diff --git a/drivers/pinctrl/meson/pinctrl-meson.h b/drivers/pinctrl/meson/pinctrl-meson.h
index 6ec89ba..bdee721 100644
--- a/drivers/pinctrl/meson/pinctrl-meson.h
+++ b/drivers/pinctrl/meson/pinctrl-meson.h
@@ -12,9 +12,7 @@ struct meson_pmx_group {
 	const char *name;
 	const unsigned int *pins;
 	unsigned int num_pins;
-	bool is_gpio;
-	unsigned int reg;
-	unsigned int bit;
+	const void *data;
 };
 
 struct meson_pmx_func {
@@ -33,6 +31,8 @@ struct meson_pinctrl_data {
 	unsigned int num_groups;
 	unsigned int num_funcs;
 	unsigned int num_banks;
+	const struct driver *gpio_driver;
+	void *pmx_data;
 };
 
 struct meson_pinctrl {
@@ -89,23 +89,6 @@ struct meson_bank {
 
 #define PIN(x, b)	(b + x)
 
-#define GROUP(grp, r, b)						\
-	{								\
-		.name = #grp,						\
-		.pins = grp ## _pins,					\
-		.num_pins = ARRAY_SIZE(grp ## _pins),			\
-		.reg = r,						\
-		.bit = b,						\
-	 }
-
-#define GPIO_GROUP(gpio, b)						\
-	{								\
-		.name = #gpio,						\
-		.pins = (const unsigned int[]){ PIN(gpio, b) },		\
-		.num_pins = 1,						\
-		.is_gpio = true,					\
-	 }
-
 #define FUNCTION(fn)							\
 	{								\
 		.name = #fn,						\
@@ -131,6 +114,20 @@ struct meson_bank {
 
 extern const struct pinctrl_ops meson_pinctrl_ops;
 
+int meson_pinctrl_get_groups_count(struct udevice *dev);
+const char *meson_pinctrl_get_group_name(struct udevice *dev,
+					 unsigned int selector);
+int meson_pinmux_get_functions_count(struct udevice *dev);
+const char *meson_pinmux_get_function_name(struct udevice *dev,
+					   unsigned int selector);
 int meson_pinctrl_probe(struct udevice *dev);
 
+int meson_gpio_get(struct udevice *dev, unsigned int offset);
+int meson_gpio_set(struct udevice *dev, unsigned int offset, int value);
+int meson_gpio_get_direction(struct udevice *dev, unsigned int offset);
+int meson_gpio_direction_input(struct udevice *dev, unsigned int offset);
+int meson_gpio_direction_output(struct udevice *dev, unsigned int offset,
+				int value);
+int meson_gpio_probe(struct udevice *dev);
+
 #endif /* __PINCTRL_MESON_H__ */
-- 
2.7.4



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