116 lines
2.9 KiB
Diff
116 lines
2.9 KiB
Diff
From c046c19fc8f1af7cf253fea5b0253143c159948a Mon Sep 17 00:00:00 2001
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From: Hauke Mehrtens <hauke@hauke-m.de>
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Date: Mon, 6 Jan 2014 23:29:15 +0100
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Subject: [PATCH 6/8] bcma: register bcma as device tree driver
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This driver is used by the bcm53xx ARM SoC code.Now it is possible to
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give the address of the chipcommon core in device tree.
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Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
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---
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drivers/bcma/host_soc.c | 70 +++++++++++++++++++++++++++++++++++++++++++++
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include/linux/bcma/bcma.h | 2 ++
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2 files changed, 72 insertions(+)
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--- a/drivers/bcma/host_soc.c
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+++ b/drivers/bcma/host_soc.c
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@@ -7,6 +7,9 @@
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#include "bcma_private.h"
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#include "scan.h"
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+#include <linux/slab.h>
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+#include <linux/module.h>
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+#include <linux/of_address.h>
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#include <linux/bcma/bcma.h>
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#include <linux/bcma/bcma_soc.h>
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@@ -173,6 +176,7 @@ int __init bcma_host_soc_register(struct
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/* Host specific */
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bus->hosttype = BCMA_HOSTTYPE_SOC;
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bus->ops = &bcma_host_soc_ops;
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+ bus->host_pdev = NULL;
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/* Register */
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err = bcma_bus_early_register(bus, &soc->core_cc, &soc->core_mips);
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@@ -181,3 +185,69 @@ int __init bcma_host_soc_register(struct
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return err;
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}
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+
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+#ifdef CONFIG_OF
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+static int bcma_host_soc_probe(struct platform_device *pdev)
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+{
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+ struct device *dev = &pdev->dev;
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+ struct device_node *np = dev->of_node;
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+ struct bcma_bus *bus;
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+ int err;
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+
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+ /* Alloc */
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+ bus = devm_kzalloc(dev, sizeof(*bus), GFP_KERNEL);
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+ if (!bus)
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+ return -ENOMEM;
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+
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+ /* Map MMIO */
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+ bus->mmio = of_iomap(np, 0);
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+ if (!bus->mmio)
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+ return -ENOMEM;
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+
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+ /* Host specific */
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+ bus->hosttype = BCMA_HOSTTYPE_SOC;
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+ bus->ops = &bcma_host_soc_ops;
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+ bus->host_pdev = pdev;
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+
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+ /* Register */
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+ err = bcma_bus_register(bus);
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+ if (err)
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+ goto err_unmap_mmio;
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+
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+ platform_set_drvdata(pdev, bus);
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+
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+ return err;
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+
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+err_unmap_mmio:
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+ iounmap(bus->mmio);
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+ return err;
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+}
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+
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+static int bcma_host_soc_remove(struct platform_device *pdev)
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+{
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+ struct bcma_bus *bus = platform_get_drvdata(pdev);
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+
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+ bcma_bus_unregister(bus);
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+ iounmap(bus->mmio);
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+ platform_set_drvdata(pdev, NULL);
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+
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+ return 0;
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+}
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+
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+static const struct of_device_id bcma_host_soc_of_match[] = {
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+ { .compatible = "brcm,bus-aix", },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, bcma_host_soc_of_match);
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+
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+static struct platform_driver bcma_host_soc_driver = {
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+ .driver = {
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+ .name = "bcma-host-soc",
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+ .owner = THIS_MODULE,
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+ .of_match_table = bcma_host_soc_of_match,
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+ },
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+ .probe = bcma_host_soc_probe,
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+ .remove = bcma_host_soc_remove,
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+};
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+module_platform_driver(bcma_host_soc_driver);
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+#endif /* CONFIG_OF */
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--- a/include/linux/bcma/bcma.h
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+++ b/include/linux/bcma/bcma.h
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@@ -319,6 +319,8 @@ struct bcma_bus {
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struct pci_dev *host_pci;
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/* Pointer to the SDIO device (only for BCMA_HOSTTYPE_SDIO) */
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struct sdio_func *host_sdio;
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+ /* Pointer to platform device (only for BCMA_HOSTTYPE_SOC) */
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+ struct platform_device *host_pdev;
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};
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struct bcma_chipinfo chipinfo;
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