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 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 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