mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 21:24:29 +00:00
401d1c4f5d
Move this out of the common header and include it only where needed. In a number of cases this requires adding "struct udevice;" to avoid adding another large header or in other cases replacing / adding missing header files that had been pulled in, very indirectly. Finally, we have a few cases where we did not need to include <asm/global_data.h> at all, so remove that include. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com>
134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Qualcomm GPIO driver
|
|
*
|
|
* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <asm/global_data.h>
|
|
#include <asm/gpio.h>
|
|
#include <asm/io.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/* Register offsets */
|
|
#define GPIO_CONFIG_OFF(no) ((no) * 0x1000)
|
|
#define GPIO_IN_OUT_OFF(no) ((no) * 0x1000 + 0x4)
|
|
|
|
/* OE */
|
|
#define GPIO_OE_DISABLE (0x0 << 9)
|
|
#define GPIO_OE_ENABLE (0x1 << 9)
|
|
#define GPIO_OE_MASK (0x1 << 9)
|
|
|
|
/* GPIO_IN_OUT register shifts. */
|
|
#define GPIO_IN 0
|
|
#define GPIO_OUT 1
|
|
|
|
struct msm_gpio_bank {
|
|
phys_addr_t base;
|
|
};
|
|
|
|
static int msm_gpio_direction_input(struct udevice *dev, unsigned int gpio)
|
|
{
|
|
struct msm_gpio_bank *priv = dev_get_priv(dev);
|
|
phys_addr_t reg = priv->base + GPIO_CONFIG_OFF(gpio);
|
|
|
|
/* Disable OE bit */
|
|
clrsetbits_le32(reg, GPIO_OE_MASK, GPIO_OE_DISABLE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int msm_gpio_set_value(struct udevice *dev, unsigned gpio, int value)
|
|
{
|
|
struct msm_gpio_bank *priv = dev_get_priv(dev);
|
|
|
|
value = !!value;
|
|
/* set value */
|
|
writel(value << GPIO_OUT, priv->base + GPIO_IN_OUT_OFF(gpio));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int msm_gpio_direction_output(struct udevice *dev, unsigned gpio,
|
|
int value)
|
|
{
|
|
struct msm_gpio_bank *priv = dev_get_priv(dev);
|
|
phys_addr_t reg = priv->base + GPIO_CONFIG_OFF(gpio);
|
|
|
|
value = !!value;
|
|
/* set value */
|
|
writel(value << GPIO_OUT, priv->base + GPIO_IN_OUT_OFF(gpio));
|
|
/* switch direction */
|
|
clrsetbits_le32(reg, GPIO_OE_MASK, GPIO_OE_ENABLE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int msm_gpio_get_value(struct udevice *dev, unsigned gpio)
|
|
{
|
|
struct msm_gpio_bank *priv = dev_get_priv(dev);
|
|
|
|
return !!(readl(priv->base + GPIO_IN_OUT_OFF(gpio)) >> GPIO_IN);
|
|
}
|
|
|
|
static int msm_gpio_get_function(struct udevice *dev, unsigned offset)
|
|
{
|
|
struct msm_gpio_bank *priv = dev_get_priv(dev);
|
|
|
|
if (readl(priv->base + GPIO_CONFIG_OFF(offset)) & GPIO_OE_ENABLE)
|
|
return GPIOF_OUTPUT;
|
|
|
|
return GPIOF_INPUT;
|
|
}
|
|
|
|
static const struct dm_gpio_ops gpio_msm_ops = {
|
|
.direction_input = msm_gpio_direction_input,
|
|
.direction_output = msm_gpio_direction_output,
|
|
.get_value = msm_gpio_get_value,
|
|
.set_value = msm_gpio_set_value,
|
|
.get_function = msm_gpio_get_function,
|
|
};
|
|
|
|
static int msm_gpio_probe(struct udevice *dev)
|
|
{
|
|
struct msm_gpio_bank *priv = dev_get_priv(dev);
|
|
|
|
priv->base = dev_read_addr(dev);
|
|
|
|
return priv->base == FDT_ADDR_T_NONE ? -EINVAL : 0;
|
|
}
|
|
|
|
static int msm_gpio_of_to_plat(struct udevice *dev)
|
|
{
|
|
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
|
|
|
|
uc_priv->gpio_count = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
|
|
"gpio-count", 0);
|
|
uc_priv->bank_name = fdt_getprop(gd->fdt_blob, dev_of_offset(dev),
|
|
"gpio-bank-name", NULL);
|
|
if (uc_priv->bank_name == NULL)
|
|
uc_priv->bank_name = "soc";
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id msm_gpio_ids[] = {
|
|
{ .compatible = "qcom,msm8916-pinctrl" },
|
|
{ .compatible = "qcom,apq8016-pinctrl" },
|
|
{ .compatible = "qcom,ipq4019-pinctrl" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(gpio_msm) = {
|
|
.name = "gpio_msm",
|
|
.id = UCLASS_GPIO,
|
|
.of_match = msm_gpio_ids,
|
|
.of_to_plat = msm_gpio_of_to_plat,
|
|
.probe = msm_gpio_probe,
|
|
.ops = &gpio_msm_ops,
|
|
.priv_auto = sizeof(struct msm_gpio_bank),
|
|
};
|