168 lines
3.6 KiB
C
168 lines
3.6 KiB
C
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/*
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* omap iommu: omap device registration
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*
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* Copyright (C) 2008-2009 Nokia Corporation
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*
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* Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <plat/iommu.h>
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#include <plat/irqs.h>
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struct iommu_device {
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resource_size_t base;
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int irq;
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struct iommu_platform_data pdata;
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struct resource res[2];
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};
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static struct iommu_device *devices;
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static int num_iommu_devices;
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#ifdef CONFIG_ARCH_OMAP3
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static struct iommu_device omap3_devices[] = {
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{
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.base = 0x480bd400,
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.irq = 24,
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.pdata = {
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.name = "isp",
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.nr_tlb_entries = 8,
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.clk_name = "cam_ick",
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.da_start = 0x0,
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.da_end = 0xFFFFF000,
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},
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},
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#if defined(CONFIG_OMAP_IOMMU_IVA2)
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{
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.base = 0x5d000000,
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.irq = 28,
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.pdata = {
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.name = "iva2",
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.nr_tlb_entries = 32,
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.clk_name = "iva2_ck",
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.da_start = 0x11000000,
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.da_end = 0xFFFFF000,
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},
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},
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#endif
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};
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#define NR_OMAP3_IOMMU_DEVICES ARRAY_SIZE(omap3_devices)
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static struct platform_device *omap3_iommu_pdev[NR_OMAP3_IOMMU_DEVICES];
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#else
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#define omap3_devices NULL
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#define NR_OMAP3_IOMMU_DEVICES 0
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#define omap3_iommu_pdev NULL
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#endif
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#ifdef CONFIG_ARCH_OMAP4
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static struct iommu_device omap4_devices[] = {
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{
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.base = OMAP4_MMU1_BASE,
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.irq = OMAP44XX_IRQ_DUCATI_MMU,
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.pdata = {
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.name = "ducati",
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.nr_tlb_entries = 32,
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.clk_name = "ipu_fck",
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.da_start = 0x0,
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.da_end = 0xFFFFF000,
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},
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},
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#if defined(CONFIG_MPU_TESLA_IOMMU)
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{
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.base = OMAP4_MMU2_BASE,
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.irq = INT_44XX_DSP_MMU,
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.pdata = {
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.name = "tesla",
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.nr_tlb_entries = 32,
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.clk_name = "tesla_ick",
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.da_start = 0x0,
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.da_end = 0xFFFFF000,
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},
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},
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#endif
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};
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#define NR_OMAP4_IOMMU_DEVICES ARRAY_SIZE(omap4_devices)
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static struct platform_device *omap4_iommu_pdev[NR_OMAP4_IOMMU_DEVICES];
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#else
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#define omap4_devices NULL
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#define NR_OMAP4_IOMMU_DEVICES 0
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#define omap4_iommu_pdev NULL
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#endif
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static struct platform_device **omap_iommu_pdev;
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static int __init omap_iommu_init(void)
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{
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int i, err;
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struct resource res[] = {
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{ .flags = IORESOURCE_MEM },
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{ .flags = IORESOURCE_IRQ },
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};
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if (cpu_is_omap34xx()) {
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devices = omap3_devices;
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omap_iommu_pdev = omap3_iommu_pdev;
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num_iommu_devices = NR_OMAP3_IOMMU_DEVICES;
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} else if (cpu_is_omap44xx()) {
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devices = omap4_devices;
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omap_iommu_pdev = omap4_iommu_pdev;
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num_iommu_devices = NR_OMAP4_IOMMU_DEVICES;
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} else
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return -ENODEV;
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for (i = 0; i < num_iommu_devices; i++) {
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struct platform_device *pdev;
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const struct iommu_device *d = &devices[i];
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pdev = platform_device_alloc("omap-iommu", i);
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if (!pdev) {
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err = -ENOMEM;
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goto err_out;
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}
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res[0].start = d->base;
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res[0].end = d->base + MMU_REG_SIZE - 1;
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res[1].start = res[1].end = d->irq;
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err = platform_device_add_resources(pdev, res,
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ARRAY_SIZE(res));
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if (err)
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goto err_out;
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err = platform_device_add_data(pdev, &d->pdata,
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sizeof(d->pdata));
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if (err)
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goto err_out;
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err = platform_device_add(pdev);
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if (err)
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goto err_out;
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omap_iommu_pdev[i] = pdev;
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}
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return 0;
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err_out:
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while (i--)
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platform_device_put(omap_iommu_pdev[i]);
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return err;
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}
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/* must be ready before omap3isp is probed */
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subsys_initcall(omap_iommu_init);
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static void __exit omap_iommu_exit(void)
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{
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int i;
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for (i = 0; i < num_iommu_devices; i++)
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platform_device_unregister(omap_iommu_pdev[i]);
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}
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module_exit(omap_iommu_exit);
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MODULE_AUTHOR("Hiroshi DOYU");
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MODULE_DESCRIPTION("omap iommu: omap device registration");
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MODULE_LICENSE("GPL v2");
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