upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
138 lines
3.4 KiB
138 lines
3.4 KiB
/*
|
|
* Copyright (C) 2015
|
|
* Bhuvanchandra DV, Toradex, Inc.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <fdtdec.h>
|
|
#include <asm/gpio.h>
|
|
#include <asm/mach-imx/iomux-v3.h>
|
|
#include <asm/io.h>
|
|
#include <malloc.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
struct vybrid_gpios {
|
|
unsigned int chip;
|
|
struct vybrid_gpio_regs *reg;
|
|
};
|
|
|
|
static int vybrid_gpio_direction_input(struct udevice *dev, unsigned gpio)
|
|
{
|
|
const struct vybrid_gpios *gpios = dev_get_priv(dev);
|
|
|
|
gpio = gpio + (gpios->chip * VYBRID_GPIO_COUNT);
|
|
imx_iomux_gpio_set_direction(gpio, VF610_GPIO_DIRECTION_IN);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vybrid_gpio_direction_output(struct udevice *dev, unsigned gpio,
|
|
int value)
|
|
{
|
|
const struct vybrid_gpios *gpios = dev_get_priv(dev);
|
|
|
|
gpio = gpio + (gpios->chip * VYBRID_GPIO_COUNT);
|
|
gpio_set_value(gpio, value);
|
|
imx_iomux_gpio_set_direction(gpio, VF610_GPIO_DIRECTION_OUT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vybrid_gpio_get_value(struct udevice *dev, unsigned gpio)
|
|
{
|
|
const struct vybrid_gpios *gpios = dev_get_priv(dev);
|
|
|
|
return ((readl(&gpios->reg->gpio_pdir) & (1 << gpio))) ? 1 : 0;
|
|
}
|
|
|
|
static int vybrid_gpio_set_value(struct udevice *dev, unsigned gpio,
|
|
int value)
|
|
{
|
|
const struct vybrid_gpios *gpios = dev_get_priv(dev);
|
|
if (value)
|
|
writel((1 << gpio), &gpios->reg->gpio_psor);
|
|
else
|
|
writel((1 << gpio), &gpios->reg->gpio_pcor);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vybrid_gpio_get_function(struct udevice *dev, unsigned gpio)
|
|
{
|
|
const struct vybrid_gpios *gpios = dev_get_priv(dev);
|
|
u32 g_state = 0;
|
|
|
|
gpio = gpio + (gpios->chip * VYBRID_GPIO_COUNT);
|
|
|
|
imx_iomux_gpio_get_function(gpio, &g_state);
|
|
|
|
if (((g_state & (0x07 << PAD_MUX_MODE_SHIFT)) >> PAD_MUX_MODE_SHIFT) > 0)
|
|
return GPIOF_FUNC;
|
|
if (g_state & PAD_CTL_OBE_ENABLE)
|
|
return GPIOF_OUTPUT;
|
|
if (g_state & PAD_CTL_IBE_ENABLE)
|
|
return GPIOF_INPUT;
|
|
if (!(g_state & PAD_CTL_OBE_IBE_ENABLE))
|
|
return GPIOF_UNUSED;
|
|
|
|
return GPIOF_UNKNOWN;
|
|
}
|
|
|
|
static const struct dm_gpio_ops gpio_vybrid_ops = {
|
|
.direction_input = vybrid_gpio_direction_input,
|
|
.direction_output = vybrid_gpio_direction_output,
|
|
.get_value = vybrid_gpio_get_value,
|
|
.set_value = vybrid_gpio_set_value,
|
|
.get_function = vybrid_gpio_get_function,
|
|
};
|
|
|
|
static int vybrid_gpio_probe(struct udevice *dev)
|
|
{
|
|
struct vybrid_gpios *gpios = dev_get_priv(dev);
|
|
struct vybrid_gpio_platdata *plat = dev_get_platdata(dev);
|
|
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
|
|
|
|
uc_priv->bank_name = plat->port_name;
|
|
uc_priv->gpio_count = VYBRID_GPIO_COUNT;
|
|
gpios->reg = (struct vybrid_gpio_regs *)plat->base;
|
|
gpios->chip = plat->chip;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vybrid_gpio_odata_to_platdata(struct udevice *dev)
|
|
{
|
|
struct vybrid_gpio_platdata *plat = dev_get_platdata(dev);
|
|
fdt_addr_t base_addr;
|
|
|
|
base_addr = devfdt_get_addr(dev);
|
|
if (base_addr == FDT_ADDR_T_NONE)
|
|
return -EINVAL;
|
|
|
|
plat->base = base_addr;
|
|
plat->chip = dev->req_seq;
|
|
plat->port_name = fdt_get_name(gd->fdt_blob, dev_of_offset(dev), NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id vybrid_gpio_ids[] = {
|
|
{ .compatible = "fsl,vf610-gpio" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(gpio_vybrid) = {
|
|
.name = "gpio_vybrid",
|
|
.id = UCLASS_GPIO,
|
|
.ops = &gpio_vybrid_ops,
|
|
.of_match = vybrid_gpio_ids,
|
|
.ofdata_to_platdata = vybrid_gpio_odata_to_platdata,
|
|
.probe = vybrid_gpio_probe,
|
|
.priv_auto_alloc_size = sizeof(struct vybrid_gpios),
|
|
.platdata_auto_alloc_size = sizeof(struct vybrid_gpio_platdata),
|
|
};
|
|
|