Merge branch 'v2.6.34-rc7.iommu' of git://gitorious.org/~doyu/lk/mainline into omap-for-linus

1 files changed, 157 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/omap-iommu.c b/arch/arm/mach-omap2/omap-iommu.c
new file mode 100644
index 000000000000..eb9bee73e0cb
--- /dev/null
+++ b/arch/arm/mach-omap2/omap-iommu.c
@@ -0,0 +1,157 @@
+/*
+ * omap iommu: omap device registration
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/platform_device.h>
+
+#include <plat/iommu.h>
+#include <plat/irqs.h>
+
+struct iommu_device {
+	resource_size_t base;
+	int irq;
+	struct iommu_platform_data pdata;
+	struct resource res[2];
+};
+static struct iommu_device *devices;
+static int num_iommu_devices;
+
+#ifdef CONFIG_ARCH_OMAP3
+static struct iommu_device omap3_devices[] = {
+	{
+		.base = 0x480bd400,
+		.irq = 24,
+		.pdata = {
+			.name = "isp",
+			.nr_tlb_entries = 8,
+			.clk_name = "cam_ick",
+		},
+	},
+#if defined(CONFIG_MPU_BRIDGE_IOMMU)
+	{
+		.base = 0x5d000000,
+		.irq = 28,
+		.pdata = {
+			.name = "iva2",
+			.nr_tlb_entries = 32,
+			.clk_name = "iva2_ck",
+		},
+	},
+#endif
+};
+#define NR_OMAP3_IOMMU_DEVICES ARRAY_SIZE(omap3_devices)
+static struct platform_device *omap3_iommu_pdev[NR_OMAP3_IOMMU_DEVICES];
+#else
+#define omap3_devices		NULL
+#define NR_OMAP3_IOMMU_DEVICES	0
+#define omap3_iommu_pdev	NULL
+#endif
+
+#ifdef CONFIG_ARCH_OMAP4
+static struct iommu_device omap4_devices[] = {
+	{
+		.base = OMAP4_MMU1_BASE,
+		.irq = INT_44XX_DUCATI_MMU_IRQ,
+		.pdata = {
+			.name = "ducati",
+			.nr_tlb_entries = 32,
+			.clk_name = "ducati_ick",
+		},
+	},
+#if defined(CONFIG_MPU_TESLA_IOMMU)
+	{
+		.base = OMAP4_MMU2_BASE,
+		.irq = INT_44XX_DSP_MMU,
+		.pdata = {
+			.name = "tesla",
+			.nr_tlb_entries = 32,
+			.clk_name = "tesla_ick",
+		},
+	},
+#endif
+};
+#define NR_OMAP4_IOMMU_DEVICES ARRAY_SIZE(omap4_devices)
+static struct platform_device *omap4_iommu_pdev[NR_OMAP4_IOMMU_DEVICES];
+#else
+#define omap4_devices		NULL
+#define NR_OMAP4_IOMMU_DEVICES	0
+#define omap4_iommu_pdev	NULL
+#endif
+
+static struct platform_device **omap_iommu_pdev;
+
+static int __init omap_iommu_init(void)
+{
+	int i, err;
+	struct resource res[] = {
+		{ .flags = IORESOURCE_MEM },
+		{ .flags = IORESOURCE_IRQ },
+	};
+
+	if (cpu_is_omap34xx()) {
+		devices = omap3_devices;
+		omap_iommu_pdev = omap3_iommu_pdev;
+		num_iommu_devices = NR_OMAP3_IOMMU_DEVICES;
+	} else if (cpu_is_omap44xx()) {
+		devices = omap4_devices;
+		omap_iommu_pdev = omap4_iommu_pdev;
+		num_iommu_devices = NR_OMAP4_IOMMU_DEVICES;
+	} else
+		return -ENODEV;
+
+	for (i = 0; i < num_iommu_devices; i++) {
+		struct platform_device *pdev;
+		const struct iommu_device *d = &devices[i];
+
+		pdev = platform_device_alloc("omap-iommu", i);
+		if (!pdev) {
+			err = -ENOMEM;
+			goto err_out;
+		}
+
+		res[0].start = d->base;
+		res[0].end = d->base + MMU_REG_SIZE - 1;
+		res[1].start = res[1].end = d->irq;
+
+		err = platform_device_add_resources(pdev, res,
+						    ARRAY_SIZE(res));
+		if (err)
+			goto err_out;
+		err = platform_device_add_data(pdev, &d->pdata,
+					       sizeof(d->pdata));
+		if (err)
+			goto err_out;
+		err = platform_device_add(pdev);
+		if (err)
+			goto err_out;
+		omap_iommu_pdev[i] = pdev;
+	}
+	return 0;
+
+err_out:
+	while (i--)
+		platform_device_put(omap_iommu_pdev[i]);
+	return err;
+}
+module_init(omap_iommu_init);
+
+static void __exit omap_iommu_exit(void)
+{
+	int i;
+
+	for (i = 0; i < num_iommu_devices; i++)
+		platform_device_unregister(omap_iommu_pdev[i]);
+}
+module_exit(omap_iommu_exit);
+
+MODULE_AUTHOR("Hiroshi DOYU");
+MODULE_DESCRIPTION("omap iommu: omap device registration");
+MODULE_LICENSE("GPL v2");