Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Ley Foon Tan | 9ea8c5b | 2017-04-26 02:44:42 +0800 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2016-2017 Intel Corporation <www.intel.com> |
Ley Foon Tan | 9ea8c5b | 2017-04-26 02:44:42 +0800 | [diff] [blame] | 4 | */ |
| 5 | |
Simon Glass | 0f2af88 | 2020-05-10 11:40:05 -0600 | [diff] [blame] | 6 | #include <log.h> |
Ley Foon Tan | 9ea8c5b | 2017-04-26 02:44:42 +0800 | [diff] [blame] | 7 | #include <asm/arch/pinmux.h> |
| 8 | #include <asm/io.h> |
| 9 | #include <common.h> |
| 10 | #include <fdtdec.h> |
| 11 | |
| 12 | static int do_pinctr_pin(const void *blob, int child, const char *node_name) |
| 13 | { |
| 14 | int len; |
| 15 | fdt_addr_t base_addr; |
| 16 | fdt_size_t size; |
| 17 | const u32 *cell; |
| 18 | u32 offset, value; |
| 19 | |
| 20 | base_addr = fdtdec_get_addr_size(blob, child, "reg", &size); |
| 21 | if (base_addr != FDT_ADDR_T_NONE) { |
| 22 | cell = fdt_getprop(blob, child, "pinctrl-single,pins", &len); |
| 23 | if (!cell || len <= 0) |
| 24 | return -EFAULT; |
| 25 | |
| 26 | debug("%p %d\n", cell, len); |
| 27 | for (; len > 0; len -= (2 * sizeof(u32))) { |
| 28 | offset = fdt32_to_cpu(*cell++); |
| 29 | value = fdt32_to_cpu(*cell++); |
| 30 | debug("<0x%x 0x%x>\n", offset, value); |
| 31 | writel(value, base_addr + offset); |
| 32 | } |
| 33 | return 0; |
| 34 | } |
| 35 | return -EFAULT; |
| 36 | } |
| 37 | |
| 38 | static int do_pinctrl_pins(const void *blob, int node, const char *child_name) |
| 39 | { |
| 40 | int child, len; |
| 41 | const char *node_name; |
| 42 | |
| 43 | child = fdt_first_subnode(blob, node); |
| 44 | |
| 45 | if (child < 0) |
| 46 | return -EINVAL; |
| 47 | |
| 48 | node_name = fdt_get_name(blob, child, &len); |
| 49 | |
| 50 | while (node_name) { |
| 51 | if (!strcmp(child_name, node_name)) |
| 52 | return do_pinctr_pin(blob, child, node_name); |
| 53 | |
| 54 | child = fdt_next_subnode(blob, child); |
| 55 | |
| 56 | if (child < 0) |
| 57 | break; |
| 58 | |
| 59 | node_name = fdt_get_name(blob, child, &len); |
| 60 | } |
| 61 | |
| 62 | return -EFAULT; |
| 63 | } |
| 64 | |
| 65 | int config_dedicated_pins(const void *blob) |
| 66 | { |
| 67 | int node; |
| 68 | |
| 69 | node = fdtdec_next_compatible(blob, 0, |
| 70 | COMPAT_ALTERA_SOCFPGA_PINCTRL_SINGLE); |
| 71 | if (node < 0) |
| 72 | return -EINVAL; |
| 73 | |
| 74 | if (do_pinctrl_pins(blob, node, "dedicated_cfg")) |
| 75 | return -EFAULT; |
| 76 | |
| 77 | if (do_pinctrl_pins(blob, node, "dedicated")) |
| 78 | return -EFAULT; |
| 79 | |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | int config_pins(const void *blob, const char *pin_grp) |
| 84 | { |
| 85 | int node; |
| 86 | |
| 87 | node = fdtdec_next_compatible(blob, 0, |
| 88 | COMPAT_ALTERA_SOCFPGA_PINCTRL_SINGLE); |
| 89 | if (node < 0) |
| 90 | return -EINVAL; |
| 91 | |
| 92 | if (do_pinctrl_pins(blob, node, pin_grp)) |
| 93 | return -EFAULT; |
| 94 | |
| 95 | return 0; |
| 96 | } |