| // SPDX-License-Identifier: ISC |
| /* |
| * Copyright (c) 2014 Broadcom Corporation |
| */ |
| #include <linux/init.h> |
| #include <linux/of.h> |
| #include <linux/of_irq.h> |
| #include <linux/of_net.h> |
| |
| #include <defs.h> |
| #include "debug.h" |
| #include "core.h" |
| #include "common.h" |
| #include "of.h" |
| |
| static int brcmf_of_get_country_codes(struct device *dev, |
| struct brcmf_mp_device *settings) |
| { |
| struct device_node *np = dev->of_node; |
| struct brcmfmac_pd_cc_entry *cce; |
| struct brcmfmac_pd_cc *cc; |
| int count; |
| int i; |
| |
| count = of_property_count_strings(np, "brcm,ccode-map"); |
| if (count < 0) { |
| /* If no explicit country code map is specified, check whether |
| * the trivial map should be used. |
| */ |
| settings->trivial_ccode_map = |
| of_property_read_bool(np, "brcm,ccode-map-trivial"); |
| |
| /* The property is optional, so return success if it doesn't |
| * exist. Otherwise propagate the error code. |
| */ |
| return (count == -EINVAL) ? 0 : count; |
| } |
| |
| cc = devm_kzalloc(dev, struct_size(cc, table, count), GFP_KERNEL); |
| if (!cc) |
| return -ENOMEM; |
| |
| cc->table_size = count; |
| |
| for (i = 0; i < count; i++) { |
| const char *map; |
| |
| cce = &cc->table[i]; |
| |
| if (of_property_read_string_index(np, "brcm,ccode-map", |
| i, &map)) |
| continue; |
| |
| /* String format e.g. US-Q2-86 */ |
| if (sscanf(map, "%2c-%2c-%d", cce->iso3166, cce->cc, |
| &cce->rev) != 3) |
| brcmf_err("failed to read country map %s\n", map); |
| else |
| brcmf_dbg(INFO, "%s-%s-%d\n", cce->iso3166, cce->cc, |
| cce->rev); |
| } |
| |
| settings->country_codes = cc; |
| |
| return 0; |
| } |
| |
| void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type, |
| struct brcmf_mp_device *settings) |
| { |
| struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio; |
| struct device_node *root, *np = dev->of_node; |
| const char *prop; |
| int irq; |
| int err; |
| u32 irqf; |
| u32 val; |
| |
| /* Apple ARM64 platforms have their own idea of board type, passed in |
| * via the device tree. They also have an antenna SKU parameter |
| */ |
| err = of_property_read_string(np, "brcm,board-type", &prop); |
| if (!err) |
| settings->board_type = prop; |
| |
| if (!of_property_read_string(np, "apple,antenna-sku", &prop)) |
| settings->antenna_sku = prop; |
| |
| /* The WLAN calibration blob is normally stored in SROM, but Apple |
| * ARM64 platforms pass it via the DT instead. |
| */ |
| prop = of_get_property(np, "brcm,cal-blob", &settings->cal_size); |
| if (prop && settings->cal_size) |
| settings->cal_blob = prop; |
| |
| /* Set board-type to the first string of the machine compatible prop */ |
| root = of_find_node_by_path("/"); |
| if (root && err) { |
| char *board_type; |
| const char *tmp; |
| |
| of_property_read_string_index(root, "compatible", 0, &tmp); |
| |
| /* get rid of '/' in the compatible string to be able to find the FW */ |
| board_type = devm_kstrdup(dev, tmp, GFP_KERNEL); |
| if (!board_type) { |
| of_node_put(root); |
| return; |
| } |
| strreplace(board_type, '/', '-'); |
| settings->board_type = board_type; |
| |
| of_node_put(root); |
| } |
| |
| if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac")) |
| return; |
| |
| err = brcmf_of_get_country_codes(dev, settings); |
| if (err) |
| brcmf_err("failed to get OF country code map (err=%d)\n", err); |
| |
| of_get_mac_address(np, settings->mac); |
| |
| if (bus_type != BRCMF_BUSTYPE_SDIO) |
| return; |
| |
| if (of_property_read_u32(np, "brcm,drive-strength", &val) == 0) |
| sdio->drive_strength = val; |
| |
| /* make sure there are interrupts defined in the node */ |
| if (!of_property_present(np, "interrupts")) |
| return; |
| |
| irq = irq_of_parse_and_map(np, 0); |
| if (!irq) { |
| brcmf_err("interrupt could not be mapped\n"); |
| return; |
| } |
| irqf = irqd_get_trigger_type(irq_get_irq_data(irq)); |
| |
| sdio->oob_irq_supported = true; |
| sdio->oob_irq_nr = irq; |
| sdio->oob_irq_flags = irqf; |
| } |