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1// SPDX-License-Identifier: ISC2/*3 * Copyright (c) 2014 Broadcom Corporation4 */5#include <linux/init.h>6#include <linux/of.h>7#include <linux/of_irq.h>8#include <linux/of_net.h>9 10#include <defs.h>11#include "debug.h"12#include "core.h"13#include "common.h"14#include "of.h"15 16static int brcmf_of_get_country_codes(struct device *dev,17 struct brcmf_mp_device *settings)18{19 struct device_node *np = dev->of_node;20 struct brcmfmac_pd_cc_entry *cce;21 struct brcmfmac_pd_cc *cc;22 int count;23 int i;24 25 count = of_property_count_strings(np, "brcm,ccode-map");26 if (count < 0) {27 /* If no explicit country code map is specified, check whether28 * the trivial map should be used.29 */30 settings->trivial_ccode_map =31 of_property_read_bool(np, "brcm,ccode-map-trivial");32 33 /* The property is optional, so return success if it doesn't34 * exist. Otherwise propagate the error code.35 */36 return (count == -EINVAL) ? 0 : count;37 }38 39 cc = devm_kzalloc(dev, struct_size(cc, table, count), GFP_KERNEL);40 if (!cc)41 return -ENOMEM;42 43 cc->table_size = count;44 45 for (i = 0; i < count; i++) {46 const char *map;47 48 cce = &cc->table[i];49 50 if (of_property_read_string_index(np, "brcm,ccode-map",51 i, &map))52 continue;53 54 /* String format e.g. US-Q2-86 */55 if (sscanf(map, "%2c-%2c-%d", cce->iso3166, cce->cc,56 &cce->rev) != 3)57 brcmf_err("failed to read country map %s\n", map);58 else59 brcmf_dbg(INFO, "%s-%s-%d\n", cce->iso3166, cce->cc,60 cce->rev);61 }62 63 settings->country_codes = cc;64 65 return 0;66}67 68void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,69 struct brcmf_mp_device *settings)70{71 struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio;72 struct device_node *root, *np = dev->of_node;73 struct of_phandle_args oirq;74 const char *prop;75 int irq;76 int err;77 u32 irqf;78 u32 val;79 80 /* Apple ARM64 platforms have their own idea of board type, passed in81 * via the device tree. They also have an antenna SKU parameter82 */83 err = of_property_read_string(np, "brcm,board-type", &prop);84 if (!err)85 settings->board_type = prop;86 87 if (!of_property_read_string(np, "apple,antenna-sku", &prop))88 settings->antenna_sku = prop;89 90 /* The WLAN calibration blob is normally stored in SROM, but Apple91 * ARM64 platforms pass it via the DT instead.92 */93 prop = of_get_property(np, "brcm,cal-blob", &settings->cal_size);94 if (prop && settings->cal_size)95 settings->cal_blob = prop;96 97 /* Set board-type to the first string of the machine compatible prop */98 root = of_find_node_by_path("/");99 if (root && err) {100 char *board_type;101 const char *tmp;102 103 of_property_read_string_index(root, "compatible", 0, &tmp);104 105 /* get rid of '/' in the compatible string to be able to find the FW */106 board_type = devm_kstrdup(dev, tmp, GFP_KERNEL);107 if (!board_type) {108 of_node_put(root);109 return;110 }111 strreplace(board_type, '/', '-');112 settings->board_type = board_type;113 114 of_node_put(root);115 }116 117 if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac"))118 return;119 120 err = brcmf_of_get_country_codes(dev, settings);121 if (err)122 brcmf_err("failed to get OF country code map (err=%d)\n", err);123 124 of_get_mac_address(np, settings->mac);125 126 if (bus_type != BRCMF_BUSTYPE_SDIO)127 return;128 129 if (of_property_read_u32(np, "brcm,drive-strength", &val) == 0)130 sdio->drive_strength = val;131 132 /* make sure there are interrupts defined in the node */133 if (of_irq_parse_one(np, 0, &oirq))134 return;135 136 irq = irq_create_of_mapping(&oirq);137 if (!irq) {138 brcmf_err("interrupt could not be mapped\n");139 return;140 }141 irqf = irqd_get_trigger_type(irq_get_irq_data(irq));142 143 sdio->oob_irq_supported = true;144 sdio->oob_irq_nr = irq;145 sdio->oob_irq_flags = irqf;146}147