[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
More information about the U-Boot
mailing list