mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-10-31 08:21:36 +01:00
1221ce459d
Now, arch/${ARCH}/include/asm/errno.h and include/linux/errno.h have
the same content. (both just wrap <asm-generic/errno.h>)
Replace all include directives for <asm/errno.h> with <linux/errno.h>.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Fixup include/clk.]
Signed-off-by: Tom Rini <trini@konsulko.com>
136 lines
3.3 KiB
C
136 lines
3.3 KiB
C
/*
|
|
* Copyright (C) 2016 Socionext Inc.
|
|
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm/device.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/io.h>
|
|
#include <linux/sizes.h>
|
|
#include <linux/errno.h>
|
|
#include <asm/gpio.h>
|
|
|
|
#define UNIPHIER_GPIO_PORTS_PER_BANK 8
|
|
|
|
#define UNIPHIER_GPIO_REG_DATA 0 /* data */
|
|
#define UNIPHIER_GPIO_REG_DIR 4 /* direction (1:in, 0:out) */
|
|
|
|
struct uniphier_gpio_priv {
|
|
void __iomem *base;
|
|
char bank_name[16];
|
|
};
|
|
|
|
static void uniphier_gpio_offset_write(struct udevice *dev, unsigned offset,
|
|
unsigned reg, int value)
|
|
{
|
|
struct uniphier_gpio_priv *priv = dev_get_priv(dev);
|
|
u32 tmp;
|
|
|
|
tmp = readl(priv->base + reg);
|
|
if (value)
|
|
tmp |= BIT(offset);
|
|
else
|
|
tmp &= ~BIT(offset);
|
|
writel(tmp, priv->base + reg);
|
|
}
|
|
|
|
static int uniphier_gpio_offset_read(struct udevice *dev, unsigned offset,
|
|
unsigned reg)
|
|
{
|
|
struct uniphier_gpio_priv *priv = dev_get_priv(dev);
|
|
|
|
return !!(readl(priv->base + reg) & BIT(offset));
|
|
}
|
|
|
|
static int uniphier_gpio_direction_input(struct udevice *dev, unsigned offset)
|
|
{
|
|
uniphier_gpio_offset_write(dev, offset, UNIPHIER_GPIO_REG_DIR, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int uniphier_gpio_direction_output(struct udevice *dev, unsigned offset,
|
|
int value)
|
|
{
|
|
uniphier_gpio_offset_write(dev, offset, UNIPHIER_GPIO_REG_DATA, value);
|
|
uniphier_gpio_offset_write(dev, offset, UNIPHIER_GPIO_REG_DIR, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int uniphier_gpio_get_value(struct udevice *dev, unsigned offset)
|
|
{
|
|
return uniphier_gpio_offset_read(dev, offset, UNIPHIER_GPIO_REG_DATA);
|
|
}
|
|
|
|
static int uniphier_gpio_set_value(struct udevice *dev, unsigned offset,
|
|
int value)
|
|
{
|
|
uniphier_gpio_offset_write(dev, offset, UNIPHIER_GPIO_REG_DATA, value);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int uniphier_gpio_get_function(struct udevice *dev, unsigned offset)
|
|
{
|
|
return uniphier_gpio_offset_read(dev, offset, UNIPHIER_GPIO_REG_DIR) ?
|
|
GPIOF_INPUT : GPIOF_OUTPUT;
|
|
}
|
|
|
|
static const struct dm_gpio_ops uniphier_gpio_ops = {
|
|
.direction_input = uniphier_gpio_direction_input,
|
|
.direction_output = uniphier_gpio_direction_output,
|
|
.get_value = uniphier_gpio_get_value,
|
|
.set_value = uniphier_gpio_set_value,
|
|
.get_function = uniphier_gpio_get_function,
|
|
};
|
|
|
|
static int uniphier_gpio_probe(struct udevice *dev)
|
|
{
|
|
struct uniphier_gpio_priv *priv = dev_get_priv(dev);
|
|
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
|
|
fdt_addr_t addr;
|
|
unsigned int tmp;
|
|
|
|
addr = dev_get_addr(dev);
|
|
if (addr == FDT_ADDR_T_NONE)
|
|
return -EINVAL;
|
|
|
|
priv->base = devm_ioremap(dev, addr, SZ_8);
|
|
if (!priv->base)
|
|
return -ENOMEM;
|
|
|
|
uc_priv->gpio_count = UNIPHIER_GPIO_PORTS_PER_BANK;
|
|
|
|
tmp = (addr & 0xfff);
|
|
|
|
/* Unfortunately, there is a register hole at offset 0x90-0x9f. */
|
|
if (tmp > 0x90)
|
|
tmp -= 0x10;
|
|
|
|
snprintf(priv->bank_name, sizeof(priv->bank_name) - 1,
|
|
"port%d-", (tmp - 8) / 8);
|
|
|
|
uc_priv->bank_name = priv->bank_name;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* .data = the number of GPIO banks */
|
|
static const struct udevice_id uniphier_gpio_match[] = {
|
|
{ .compatible = "socionext,uniphier-gpio" },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(uniphier_gpio) = {
|
|
.name = "uniphier_gpio",
|
|
.id = UCLASS_GPIO,
|
|
.of_match = uniphier_gpio_match,
|
|
.probe = uniphier_gpio_probe,
|
|
.priv_auto_alloc_size = sizeof(struct uniphier_gpio_priv),
|
|
.ops = &uniphier_gpio_ops,
|
|
};
|