LXR linux/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c

   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
  15void 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        struct property *prop;
  21        int irq;
  22        u32 irqf;
  23        u32 val;
  24
  25        /* Set board-type to the first string of the machine compatible prop */
  26        root = of_find_node_by_path("/");
  27        if (root) {
  28                prop = of_find_property(root, "compatible", NULL);
  29                settings->board_type = of_prop_next_string(prop, NULL);
  30                of_node_put(root);
  31        }
  32
  33        if (!np || bus_type != BRCMF_BUSTYPE_SDIO ||
  34            !of_device_is_compatible(np, "brcm,bcm4329-fmac"))
  35                return;
  36
  37        if (of_property_read_u32(np, "brcm,drive-strength", &val) == 0)
  38                sdio->drive_strength = val;
  39
  40        /* make sure there are interrupts defined in the node */
  41        if (!of_find_property(np, "interrupts", NULL))
  42                return;
  43
  44        irq = irq_of_parse_and_map(np, 0);
  45        if (!irq) {
  46                brcmf_err("interrupt could not be mapped\n");
  47                return;
  48        }
  49        irqf = irqd_get_trigger_type(irq_get_irq_data(irq));
  50
  51        sdio->oob_irq_supported = true;
  52        sdio->oob_irq_nr = irq;
  53        sdio->oob_irq_flags = irqf;
  54}
  55