omap iommu: support for OMAP4

This patch provides the iommu support for OMAP4 co-processors.

Signed-off-by: Hari Kanigeri <h-kanigeri2@ti.com>
Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>

1 files changed, 54 insertions, 5 deletions

diff --git a/arch/arm/mach-omap2/omap-iommu.c b/arch/arm/mach-omap2/omap-iommu.c
index 416a65d5c4a9..eb9bee73e0cb 100644
--- a/arch/arm/mach-omap2/omap-iommu.c
+++ b/arch/arm/mach-omap2/omap-iommu.c
@@ -13,6 +13,7 @@
 #include <linux/platform_device.h>
 
 #include <plat/iommu.h>
+#include <plat/irqs.h>
 
 struct iommu_device {
         resource_size_t base;
@@ -20,9 +21,11 @@ struct iommu_device {
         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 devices[] = {
+static struct iommu_device omap3_devices[] = {
         {
                 .base = 0x480bd400,
                 .irq = 24,
@@ -44,11 +47,46 @@ static struct iommu_device devices[] = {
         },
 #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
 
-#define NR_IOMMU_DEVICES ARRAY_SIZE(devices)
+#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[NR_IOMMU_DEVICES];
+static struct platform_device **omap_iommu_pdev;
 
 static int __init omap_iommu_init(void)
 {
@@ -58,7 +96,18 @@ static int __init omap_iommu_init(void)
                 { .flags = IORESOURCE_IRQ },
         };
 
-        for (i = 0; i < NR_IOMMU_DEVICES; i++) {
+        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];
 
@@ -98,7 +147,7 @@ static void __exit omap_iommu_exit(void)
 {
         int i;
 
-        for (i = 0; i < NR_IOMMU_DEVICES; i++)
+        for (i = 0; i < num_iommu_devices; i++)
                 platform_device_unregister(omap_iommu_pdev[i]);
 }
 module_exit(omap_iommu_exit);