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
  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 *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 }