ux500: rework device registration

Change the Ux500 devices to be dynamically allocated and added by
calling functions instead of referencing structures, thereby allowing
5500 and other derivatives' support to be added without having to
duplicate structures, use fixup functions, or use compile-time macros.

Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>

1 files changed, 107 insertions, 0 deletions

diff --git a/arch/arm/mach-ux500/devices-common.c b/arch/arm/mach-ux500/devices-common.c
new file mode 100644
index 0000000..9376a24
--- /dev/null
+++ b/arch/arm/mach-ux500/devices-common.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
+ * License terms: GNU General Public License (GPL), version 2.
+ */
+
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/err.h>
+#include <linux/irq.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/amba/bus.h>
+
+#include <mach/hardware.h>
+
+#include "devices-common.h"
+
+struct amba_device *
+dbx500_add_amba_device(const char *name, resource_size_t base,
+		       int irq, void *pdata, unsigned int periphid)
+{
+	struct amba_device *dev;
+	int ret;
+
+	dev = kzalloc(sizeof *dev, GFP_KERNEL);
+	if (!dev)
+		return ERR_PTR(-ENOMEM);
+
+	dev->dev.init_name = name;
+
+	dev->res.start = base;
+	dev->res.end = base + SZ_4K - 1;
+	dev->res.flags = IORESOURCE_MEM;
+
+	dev->dma_mask = DMA_BIT_MASK(32);
+	dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+	dev->irq[0] = irq;
+	dev->irq[1] = NO_IRQ;
+
+	dev->periphid = periphid;
+
+	dev->dev.platform_data = pdata;
+
+	ret = amba_device_register(dev, &iomem_resource);
+	if (ret) {
+		kfree(dev);
+		return ERR_PTR(ret);
+	}
+
+	return dev;
+}
+
+static struct platform_device *
+dbx500_add_platform_device(const char *name, int id, void *pdata,
+			   struct resource *res, int resnum)
+{
+	struct platform_device *dev;
+	int ret;
+
+	dev = platform_device_alloc(name, id);
+	if (!dev)
+		return ERR_PTR(-ENOMEM);
+
+	dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+	dev->dev.dma_mask = &dev->dev.coherent_dma_mask;
+
+	ret = platform_device_add_resources(dev, res, resnum);
+	if (ret)
+		goto out_free;
+
+	dev->dev.platform_data = pdata;
+
+	ret = platform_device_add(dev);
+	if (ret)
+		goto out_free;
+
+	return dev;
+
+out_free:
+	platform_device_put(dev);
+	return ERR_PTR(ret);
+}
+
+struct platform_device *
+dbx500_add_platform_device_4k1irq(const char *name, int id,
+				  resource_size_t base,
+				  int irq, void *pdata)
+{
+	struct resource resources[] = {
+		[0] = {
+			.start	= base,
+			.end	= base + SZ_4K - 1,
+			.flags	= IORESOURCE_MEM,
+		},
+		[1] = {
+			.start	= irq,
+			.end	= irq,
+			.flags	= IORESOURCE_IRQ,
+		}
+	};
+
+	return dbx500_add_platform_device(name, id, pdata, resources,
+					  ARRAY_SIZE(resources));
+}