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

   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
  26void 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 *np = dev->of_node;
  31        int irq;
  32        u32 irqf;
  33        u32 val;
  34
  35        if (!np || bus_type != BRCMF_BUSTYPE_SDIO ||
  36            !of_device_is_compatible(np, "brcm,bcm4329-fmac"))
  37                return;
  38
  39        if (of_property_read_u32(np, "brcm,drive-strength", &val) == 0)
  40                sdio->drive_strength = val;
  41
  42        /* make sure there are interrupts defined in the node */
  43        if (!of_find_property(np, "interrupts", NULL))
  44                return;
  45
  46        irq = irq_of_parse_and_map(np, 0);
  47        if (!irq) {
  48                brcmf_err("interrupt could not be mapped\n");
  49                return;
  50        }
  51        irqf = irqd_get_trigger_type(irq_get_irq_data(irq));
  52
  53        sdio->oob_irq_supported = true;
  54        sdio->oob_irq_nr = irq;
  55        sdio->oob_irq_flags = irqf;
  56}
  57