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 void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type, 16 struct brcmf_mp_device *settings) 17 { 18 struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio; 19 struct device_node *root, *np = dev->of_node; 20 int irq; 21 u32 irqf; 22 u32 val; 23 24 /* Set board-type to the first string of the machine compatible prop */ 25 root = of_find_node_by_path("/"); 26 if (root) { 27 int i, len; 28 char *board_type; 29 const char *tmp; 30 31 of_property_read_string_index(root, "compatible", 0, &tmp); 32 33 /* get rid of '/' in the compatible string to be able to find the FW */ 34 len = strlen(tmp) + 1; 35 board_type = devm_kzalloc(dev, len, GFP_KERNEL); 36 strscpy(board_type, tmp, len); 37 for (i = 0; i < board_type[i]; i++) { 38 if (board_type[i] == '/') 39 board_type[i] = '-'; 40 } 41 settings->board_type = board_type; 42 43 of_node_put(root); 44 } 45 46 if (!np || bus_type != BRCMF_BUSTYPE_SDIO || 47 !of_device_is_compatible(np, "brcm,bcm4329-fmac")) 48 return; 49 50 if (of_property_read_u32(np, "brcm,drive-strength", &val) == 0) 51 sdio->drive_strength = val; 52 53 /* make sure there are interrupts defined in the node */ 54 if (!of_find_property(np, "interrupts", NULL)) 55 return; 56 57 irq = irq_of_parse_and_map(np, 0); 58 if (!irq) { 59 brcmf_err("interrupt could not be mapped\n"); 60 return; 61 } 62 irqf = irqd_get_trigger_type(irq_get_irq_data(irq)); 63 64 sdio->oob_irq_supported = true; 65 sdio->oob_irq_nr = irq; 66 sdio->oob_irq_flags = irqf; 67 } 68