target/linux/bcm53xx/patches-3.10/111-bcma-register-bcma-as-device-tree-driver.patch

   1 bcma: register bcma as device tree driver
   2
   3 This driver is used by the bcm53xx ARM SoC code.Now it is possible to
   4 give the address of the chipcommon core in device tree.
   5
   6 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
   7 ---
   8  drivers/bcma/host_soc.c |   73 +++++++++++++++++++++++++++++++++++++++++++++++
   9  1 file changed, 73 insertions(+)
  10
  11 --- a/drivers/bcma/host_soc.c
  12 +++ b/drivers/bcma/host_soc.c
  13 @@ -7,6 +7,9 @@
  14
  15  #include "bcma_private.h"
  16  #include "scan.h"
  17 +#include <linux/slab.h>
  18 +#include <linux/module.h>
  19 +#include <linux/of_address.h>
  20  #include <linux/bcma/bcma.h>
  21  #include <linux/bcma/bcma_soc.h>
  22
  23 @@ -181,3 +184,73 @@ int __init bcma_host_soc_register(struct
  24
  25         return err;
  26  }
  27 +
  28 +#ifdef CONFIG_OF
  29 +static int bcma_host_soc_probe(struct platform_device *pdev)
  30 +{
  31 +       struct device *dev = &pdev->dev;
  32 +       struct device_node *np = dev->of_node;
  33 +       struct bcma_bus *bus;
  34 +       int err;
  35 +
  36 +       /* Alloc */
  37 +       bus = kzalloc(sizeof(*bus), GFP_KERNEL);
  38 +       if (!bus)
  39 +               return -ENOMEM;
  40 +
  41 +       /* Map MMIO */
  42 +       err = -ENOMEM;
  43 +       bus->mmio = of_iomap(np, 0);
  44 +       if (!bus->mmio)
  45 +               goto err_kfree_bus;
  46 +
  47 +       /* Host specific */
  48 +       bus->hosttype = BCMA_HOSTTYPE_SOC;
  49 +       bus->ops = &bcma_host_soc_ops;
  50 +
  51 +
  52 +       /* Register */
  53 +       err = bcma_bus_register(bus);
  54 +       if (err)
  55 +               goto err_unmap_mmio;
  56 +
  57 +       platform_set_drvdata(pdev, bus);
  58 +
  59 +       return err;
  60 +
  61 +err_unmap_mmio:
  62 +       iounmap(bus->mmio);
  63 +err_kfree_bus:
  64 +       kfree(bus);
  65 +       return err;
  66 +}
  67 +
  68 +static int bcma_host_soc_remove(struct platform_device *pdev)
  69 +{
  70 +       struct bcma_bus *bus = platform_get_drvdata(pdev);
  71 +
  72 +       bcma_bus_unregister(bus);
  73 +       iounmap(bus->mmio);
  74 +       kfree(bus);
  75 +       platform_set_drvdata(pdev, NULL);
  76 +
  77 +       return 0;
  78 +}
  79 +
  80 +static const struct of_device_id bcma_host_soc_of_match[] = {
  81 +       { .compatible = "brcm,bus-aix", },
  82 +       {},
  83 +};
  84 +MODULE_DEVICE_TABLE(of, bcma_host_soc_of_match);
  85 +
  86 +static struct platform_driver bcma_host_soc_driver = {
  87 +       .driver = {
  88 +               .name = "bcma-host-soc",
  89 +               .owner = THIS_MODULE,
  90 +               .of_match_table = bcma_host_soc_of_match,
  91 +       },
  92 +       .probe          = bcma_host_soc_probe,
  93 +       .remove         = bcma_host_soc_remove,
  94 +};
  95 +module_platform_driver(bcma_host_soc_driver);
  96 +#endif /* CONFIG_OF */