target/linux/bcm53xx/patches-3.10/112-bcma-get-irqs-from-dt.patch

   1 From 06a21484198df9a4d34fe5062878d3bf4fc14340 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Thu, 9 Jan 2014 19:40:14 +0100
   4 Subject: [PATCH 7/8] bcma: get irqs from dt
   5
   6 ---
   7  drivers/bcma/main.c |   42 +++++++++++++++++++++++++++++++++++++++++-
   8  1 file changed, 41 insertions(+), 1 deletion(-)
   9
  10 --- a/drivers/bcma/main.c
  11 +++ b/drivers/bcma/main.c
  12 @@ -10,6 +10,8 @@
  13  #include <linux/platform_device.h>
  14  #include <linux/bcma/bcma.h>
  15  #include <linux/slab.h>
  16 +#include <linux/of_irq.h>
  17 +#include <linux/of_address.h>
  18
  19  MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
  20  MODULE_LICENSE("GPL");
  21 @@ -111,6 +113,38 @@ static void bcma_release_core_dev(struct
  22         kfree(core);
  23  }
  24
  25 +static struct device_node *bcma_of_find_child_device(struct platform_device *parent,
  26 +                                                    struct bcma_device *core)
  27 +{
  28 +       struct device_node *node;
  29 +       u64 size;
  30 +       const __be32 *reg;
  31 +
  32 +       if (!parent || !parent->dev.of_node)
  33 +               return NULL;
  34 +
  35 +       for_each_child_of_node(parent->dev.of_node, node) {
  36 +               reg = of_get_address(node, 0, &size, 0);
  37 +               if (!reg)
  38 +                       continue;
  39 +               if (be32_to_cpup(reg) == core->addr)
  40 +                       return node;
  41 +       }
  42 +       return NULL;
  43 +}
  44 +
  45 +static void bcma_of_fill_device(struct platform_device *parent,
  46 +                               struct bcma_device *core)
  47 +{
  48 +       struct device_node *node;
  49 +
  50 +       node = bcma_of_find_child_device(parent, core);
  51 +       if (!node)
  52 +               return;
  53 +       core->dev.of_node = node;
  54 +       core->irq = irq_of_parse_and_map(node, 0);
  55 +}
  56 +
  57  static int bcma_register_cores(struct bcma_bus *bus)
  58  {
  59         struct bcma_device *core;
  60 @@ -145,7 +179,13 @@ static int bcma_register_cores(struct bc
  61                         break;
  62                 case BCMA_HOSTTYPE_SOC:
  63                         core->dev.dma_mask = &core->dev.coherent_dma_mask;
  64 -                       core->dma_dev = &core->dev;
  65 +                       if (bus->host_pdev) {
  66 +                               core->dma_dev = &bus->host_pdev->dev;
  67 +                               core->dev.parent = &bus->host_pdev->dev;
  68 +                               bcma_of_fill_device(bus->host_pdev, core);
  69 +                       } else {
  70 +                               core->dma_dev = &core->dev;
  71 +                       }
  72                         break;
  73                 case BCMA_HOSTTYPE_SDIO:
  74                         break;