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
  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         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 }