1 // SPDX-License-Identifier: ISC
2 /*
3 * Copyright (c) 2014 Broadcom Corporation
4 */
5 #include <linux/init.h>
6 #include <linux/of.h>
7 #include <linux/of_irq.h>
8
9 #include <defs.h>
10 #include "debug.h"
11 #include "core.h"
12 #include "common.h"
13 #include "of.h"
14
brcmf_of_get_country_codes(struct device * dev,struct brcmf_mp_device * settings)15 static int brcmf_of_get_country_codes(struct device *dev,
16 struct brcmf_mp_device *settings)
17 {
18 struct device_node *np = dev->of_node;
19 struct brcmfmac_pd_cc_entry *cce;
20 struct brcmfmac_pd_cc *cc;
21 int count;
22 int i;
23
24 count = of_property_count_strings(np, "brcm,ccode-map");
25 if (count < 0) {
26 /* The property is optional, so return success if it doesn't
27 * exist. Otherwise propagate the error code.
28 */
29 return (count == -EINVAL) ? 0 : count;
30 }
31
32 cc = devm_kzalloc(dev, sizeof(*cc) + count * sizeof(*cce), GFP_KERNEL);
33 if (!cc)
34 return -ENOMEM;
35
36 cc->table_size = count;
37
38 for (i = 0; i < count; i++) {
39 const char *map;
40
41 cce = &cc->table[i];
42
43 if (of_property_read_string_index(np, "brcm,ccode-map",
44 i, &map))
45 continue;
46
47 /* String format e.g. US-Q2-86 */
48 if (sscanf(map, "%2c-%2c-%d", cce->iso3166, cce->cc,
49 &cce->rev) != 3)
50 brcmf_err("failed to read country map %s\n", map);
51 else
52 brcmf_dbg(INFO, "%s-%s-%d\n", cce->iso3166, cce->cc,
53 cce->rev);
54 }
55
56 settings->country_codes = cc;
57
58 return 0;
59 }
60
brcmf_of_probe(struct device * dev,enum brcmf_bus_type bus_type,struct brcmf_mp_device * settings)61 void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
62 struct brcmf_mp_device *settings)
63 {
64 struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio;
65 struct device_node *root, *np = dev->of_node;
66 int irq;
67 int err;
68 u32 irqf;
69 u32 val;
70
71 /* Set board-type to the first string of the machine compatible prop */
72 root = of_find_node_by_path("/");
73 if (root) {
74 int i, len;
75 char *board_type;
76 const char *tmp;
77
78 of_property_read_string_index(root, "compatible", 0, &tmp);
79
80 /* get rid of '/' in the compatible string to be able to find the FW */
81 len = strlen(tmp) + 1;
82 board_type = devm_kzalloc(dev, len, GFP_KERNEL);
83 strscpy(board_type, tmp, len);
84 for (i = 0; i < board_type[i]; i++) {
85 if (board_type[i] == '/')
86 board_type[i] = '-';
87 }
88 settings->board_type = board_type;
89
90 of_node_put(root);
91 }
92
93 if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac"))
94 return;
95
96 err = brcmf_of_get_country_codes(dev, settings);
97 if (err)
98 brcmf_err("failed to get OF country code map (err=%d)\n", err);
99
100 if (bus_type != BRCMF_BUSTYPE_SDIO)
101 return;
102
103 if (of_property_read_u32(np, "brcm,drive-strength", &val) == 0)
104 sdio->drive_strength = val;
105
106 /* make sure there are interrupts defined in the node */
107 if (!of_find_property(np, "interrupts", NULL))
108 return;
109
110 irq = irq_of_parse_and_map(np, 0);
111 if (!irq) {
112 brcmf_err("interrupt could not be mapped\n");
113 return;
114 }
115 irqf = irqd_get_trigger_type(irq_get_irq_data(irq));
116
117 sdio->oob_irq_supported = true;
118 sdio->oob_irq_nr = irq;
119 sdio->oob_irq_flags = irqf;
120 }
121