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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0 |
caf36e1e LFT |
2 | /* |
3 | * Copyright (C) 2016-2017 Intel Corporation <www.intel.com> | |
caf36e1e LFT |
4 | */ |
5 | ||
f7ae49fc | 6 | #include <log.h> |
caf36e1e LFT |
7 | #include <asm/arch/pinmux.h> |
8 | #include <asm/io.h> | |
d678a59d | 9 | #include <common.h> |
caf36e1e LFT |
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 | } |