mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-25 14:10:43 +00:00
96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 2016-2017 Intel Corporation <www.intel.com>
|
|
*/
|
|
|
|
#include <log.h>
|
|
#include <asm/arch/pinmux.h>
|
|
#include <asm/io.h>
|
|
#include <common.h>
|
|
#include <fdtdec.h>
|
|
|
|
static int do_pinctr_pin(const void *blob, int child, const char *node_name)
|
|
{
|
|
int len;
|
|
fdt_addr_t base_addr;
|
|
fdt_size_t size;
|
|
const u32 *cell;
|
|
u32 offset, value;
|
|
|
|
base_addr = fdtdec_get_addr_size(blob, child, "reg", &size);
|
|
if (base_addr != FDT_ADDR_T_NONE) {
|
|
cell = fdt_getprop(blob, child, "pinctrl-single,pins", &len);
|
|
if (!cell || len <= 0)
|
|
return -EFAULT;
|
|
|
|
debug("%p %d\n", cell, len);
|
|
for (; len > 0; len -= (2 * sizeof(u32))) {
|
|
offset = fdt32_to_cpu(*cell++);
|
|
value = fdt32_to_cpu(*cell++);
|
|
debug("<0x%x 0x%x>\n", offset, value);
|
|
writel(value, base_addr + offset);
|
|
}
|
|
return 0;
|
|
}
|
|
return -EFAULT;
|
|
}
|
|
|
|
static int do_pinctrl_pins(const void *blob, int node, const char *child_name)
|
|
{
|
|
int child, len;
|
|
const char *node_name;
|
|
|
|
child = fdt_first_subnode(blob, node);
|
|
|
|
if (child < 0)
|
|
return -EINVAL;
|
|
|
|
node_name = fdt_get_name(blob, child, &len);
|
|
|
|
while (node_name) {
|
|
if (!strcmp(child_name, node_name))
|
|
return do_pinctr_pin(blob, child, node_name);
|
|
|
|
child = fdt_next_subnode(blob, child);
|
|
|
|
if (child < 0)
|
|
break;
|
|
|
|
node_name = fdt_get_name(blob, child, &len);
|
|
}
|
|
|
|
return -EFAULT;
|
|
}
|
|
|
|
int config_dedicated_pins(const void *blob)
|
|
{
|
|
int node;
|
|
|
|
node = fdtdec_next_compatible(blob, 0,
|
|
COMPAT_ALTERA_SOCFPGA_PINCTRL_SINGLE);
|
|
if (node < 0)
|
|
return -EINVAL;
|
|
|
|
if (do_pinctrl_pins(blob, node, "dedicated_cfg"))
|
|
return -EFAULT;
|
|
|
|
if (do_pinctrl_pins(blob, node, "dedicated"))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int config_pins(const void *blob, const char *pin_grp)
|
|
{
|
|
int node;
|
|
|
|
node = fdtdec_next_compatible(blob, 0,
|
|
COMPAT_ALTERA_SOCFPGA_PINCTRL_SINGLE);
|
|
if (node < 0)
|
|
return -EINVAL;
|
|
|
|
if (do_pinctrl_pins(blob, node, pin_grp))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|