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pinctrl: meson: rework gx pmx function

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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@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Jerome Brunet 2018-10-05 09:35:26 +02:00 committed by Neil Armstrong
parent f58d633e53
commit 7c9dcfed50
8 changed files with 191 additions and 121 deletions
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8
drivers/pinctrl/meson/Kconfig
View File

@ -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

1
drivers/pinctrl/meson/Makefile
View File

@ -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

97
drivers/pinctrl/meson/pinctrl-meson-gx-pmx.c Normal file
View File

@ -0,0 +1,97 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2016 - Beniamino Galvani <b.galvani@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,
};

48
drivers/pinctrl/meson/pinctrl-meson-gx.h Normal file
View File

@ -0,0 +1,48 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
* Copyright (C) 2017 Jerome Brunet <jbrunet@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__ */

6
drivers/pinctrl/meson/pinctrl-meson-gxbb.c
View File

@ -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,
};

6
drivers/pinctrl/meson/pinctrl-meson-gxl.c
View File

@ -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,
};

109
drivers/pinctrl/meson/pinctrl-meson.c
View File

@ -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;

37
drivers/pinctrl/meson/pinctrl-meson.h
View File

@ -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__ */