mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 12:03:39 +00:00
127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2017 Google, Inc
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <log.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/pinctrl.h>
|
|
#include <asm/arch/scu_ast2500.h>
|
|
#include <dm/pinctrl.h>
|
|
|
|
/*
|
|
* This driver works with very simple configuration that has the same name
|
|
* for group and function. This way it is compatible with the Linux Kernel
|
|
* driver.
|
|
*/
|
|
|
|
struct ast2500_pinctrl_priv {
|
|
struct ast2500_scu *scu;
|
|
};
|
|
|
|
static int ast2500_pinctrl_probe(struct udevice *dev)
|
|
{
|
|
struct ast2500_pinctrl_priv *priv = dev_get_priv(dev);
|
|
|
|
priv->scu = ast_get_scu();
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct ast2500_group_config {
|
|
char *group_name;
|
|
/* Control register number (1-10) */
|
|
unsigned reg_num;
|
|
/* The mask of control bits in the register */
|
|
u32 ctrl_bit_mask;
|
|
};
|
|
|
|
static const struct ast2500_group_config ast2500_groups[] = {
|
|
{ "I2C1", 8, (1 << 13) | (1 << 12) },
|
|
{ "I2C2", 8, (1 << 15) | (1 << 14) },
|
|
{ "I2C3", 8, (1 << 16) },
|
|
{ "I2C4", 5, (1 << 17) },
|
|
{ "I2C4", 5, (1 << 17) },
|
|
{ "I2C5", 5, (1 << 18) },
|
|
{ "I2C6", 5, (1 << 19) },
|
|
{ "I2C7", 5, (1 << 20) },
|
|
{ "I2C8", 5, (1 << 21) },
|
|
{ "I2C9", 5, (1 << 22) },
|
|
{ "I2C10", 5, (1 << 23) },
|
|
{ "I2C11", 5, (1 << 24) },
|
|
{ "I2C12", 5, (1 << 25) },
|
|
{ "I2C13", 5, (1 << 26) },
|
|
{ "I2C14", 5, (1 << 27) },
|
|
{ "MAC1LINK", 1, (1 << 0) },
|
|
{ "MDIO1", 3, (1 << 31) | (1 << 30) },
|
|
{ "MAC2LINK", 1, (1 << 1) },
|
|
{ "MDIO2", 5, (1 << 2) },
|
|
{ "SD1", 5, (1 << 0) },
|
|
{ "SD2", 5, (1 << 1) },
|
|
};
|
|
|
|
static int ast2500_pinctrl_get_groups_count(struct udevice *dev)
|
|
{
|
|
debug("PINCTRL: get_(functions/groups)_count\n");
|
|
|
|
return ARRAY_SIZE(ast2500_groups);
|
|
}
|
|
|
|
static const char *ast2500_pinctrl_get_group_name(struct udevice *dev,
|
|
unsigned selector)
|
|
{
|
|
debug("PINCTRL: get_(function/group)_name %u\n", selector);
|
|
|
|
return ast2500_groups[selector].group_name;
|
|
}
|
|
|
|
static int ast2500_pinctrl_group_set(struct udevice *dev, unsigned selector,
|
|
unsigned func_selector)
|
|
{
|
|
struct ast2500_pinctrl_priv *priv = dev_get_priv(dev);
|
|
const struct ast2500_group_config *config;
|
|
u32 *ctrl_reg;
|
|
|
|
debug("PINCTRL: group_set <%u, %u>\n", selector, func_selector);
|
|
if (selector >= ARRAY_SIZE(ast2500_groups))
|
|
return -EINVAL;
|
|
|
|
config = &ast2500_groups[selector];
|
|
if (config->reg_num > 6)
|
|
ctrl_reg = &priv->scu->pinmux_ctrl1[config->reg_num - 7];
|
|
else
|
|
ctrl_reg = &priv->scu->pinmux_ctrl[config->reg_num - 1];
|
|
|
|
ast_scu_unlock(priv->scu);
|
|
setbits_le32(ctrl_reg, config->ctrl_bit_mask);
|
|
ast_scu_lock(priv->scu);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct pinctrl_ops ast2500_pinctrl_ops = {
|
|
.set_state = pinctrl_generic_set_state,
|
|
.get_groups_count = ast2500_pinctrl_get_groups_count,
|
|
.get_group_name = ast2500_pinctrl_get_group_name,
|
|
.get_functions_count = ast2500_pinctrl_get_groups_count,
|
|
.get_function_name = ast2500_pinctrl_get_group_name,
|
|
.pinmux_group_set = ast2500_pinctrl_group_set,
|
|
};
|
|
|
|
static const struct udevice_id ast2500_pinctrl_ids[] = {
|
|
{ .compatible = "aspeed,ast2500-pinctrl" },
|
|
{ .compatible = "aspeed,g5-pinctrl" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(pinctrl_ast2500) = {
|
|
.name = "aspeed_ast2500_pinctrl",
|
|
.id = UCLASS_PINCTRL,
|
|
.of_match = ast2500_pinctrl_ids,
|
|
.priv_auto_alloc_size = sizeof(struct ast2500_pinctrl_priv),
|
|
.ops = &ast2500_pinctrl_ops,
|
|
.probe = ast2500_pinctrl_probe,
|
|
};
|