1 /* 2 * Copyright (c) 2014 Broadcom Corporation 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 #include <linux/init.h> 17 #include <linux/of.h> 18 #include <linux/of_irq.h> 19 20 #include <defs.h> 21 #include "debug.h" 22 #include "core.h" 23 #include "common.h" 24 #include "of.h" 25 26 void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type, 27 struct brcmf_mp_device *settings) 28 { 29 struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio; 30 struct device_node *root, *np = dev->of_node; 31 struct property *prop; 32 int irq; 33 u32 irqf; 34 u32 val; 35 36 /* Set board-type to the first string of the machine compatible prop */ 37 root = of_find_node_by_path("/"); 38 if (root) { 39 prop = of_find_property(root, "compatible", NULL); 40 settings->board_type = of_prop_next_string(prop, NULL); 41 of_node_put(root); 42 } 43 44 if (!np || bus_type != BRCMF_BUSTYPE_SDIO || 45 !of_device_is_compatible(np, "brcm,bcm4329-fmac")) 46 return; 47 48 if (of_property_read_u32(np, "brcm,drive-strength", &val) == 0) 49 sdio->drive_strength = val; 50 51 /* make sure there are interrupts defined in the node */ 52 if (!of_find_property(np, "interrupts", NULL)) 53 return; 54 55 irq = irq_of_parse_and_map(np, 0); 56 if (!irq) { 57 brcmf_err("interrupt could not be mapped\n"); 58 return; 59 } 60 irqf = irqd_get_trigger_type(irq_get_irq_data(irq)); 61 62 sdio->oob_irq_supported = true; 63 sdio->oob_irq_nr = irq; 64 sdio->oob_irq_flags = irqf; 65 } 66