f76da510d6
For a DT-only build we don't want to compile devs.c, but we do need the mfc device, which is also referenced by the DT based platforms, so move it all into one place. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/*
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* Copyright (C) 2010-2011 Samsung Electronics Co.Ltd
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*
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* Base S5P MFC resource and device definitions
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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/kernel.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/memblock.h>
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#include <linux/ioport.h>
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#include <linux/of_fdt.h>
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#include <linux/of.h>
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#include <mach/map.h>
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#include <mach/irqs.h>
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#include <plat/devs.h>
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#include <plat/mfc.h>
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static struct resource s5p_mfc_resource[] = {
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[0] = DEFINE_RES_MEM(S5P_PA_MFC, SZ_64K),
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[1] = DEFINE_RES_IRQ(IRQ_MFC),
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};
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struct platform_device s5p_device_mfc = {
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.name = "s5p-mfc",
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.id = -1,
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.num_resources = ARRAY_SIZE(s5p_mfc_resource),
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.resource = s5p_mfc_resource,
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};
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/*
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* MFC hardware has 2 memory interfaces which are modelled as two separate
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* platform devices to let dma-mapping distinguish between them.
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*
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* MFC parent device (s5p_device_mfc) must be registered before memory
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* interface specific devices (s5p_device_mfc_l and s5p_device_mfc_r).
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*/
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struct platform_device s5p_device_mfc_l = {
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.name = "s5p-mfc-l",
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.id = -1,
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.dev = {
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.parent = &s5p_device_mfc.dev,
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.dma_mask = &s5p_device_mfc_l.dev.coherent_dma_mask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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},
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};
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struct platform_device s5p_device_mfc_r = {
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.name = "s5p-mfc-r",
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.id = -1,
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.dev = {
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.parent = &s5p_device_mfc.dev,
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.dma_mask = &s5p_device_mfc_r.dev.coherent_dma_mask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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},
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};
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struct s5p_mfc_reserved_mem {
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phys_addr_t base;
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unsigned long size;
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struct device *dev;
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};
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static struct s5p_mfc_reserved_mem s5p_mfc_mem[2] __initdata;
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void __init s5p_mfc_reserve_mem(phys_addr_t rbase, unsigned int rsize,
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phys_addr_t lbase, unsigned int lsize)
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{
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int i;
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s5p_mfc_mem[0].dev = &s5p_device_mfc_r.dev;
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s5p_mfc_mem[0].base = rbase;
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s5p_mfc_mem[0].size = rsize;
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s5p_mfc_mem[1].dev = &s5p_device_mfc_l.dev;
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s5p_mfc_mem[1].base = lbase;
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s5p_mfc_mem[1].size = lsize;
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for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) {
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struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i];
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if (memblock_remove(area->base, area->size)) {
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printk(KERN_ERR "Failed to reserve memory for MFC device (%ld bytes at 0x%08lx)\n",
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area->size, (unsigned long) area->base);
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area->base = 0;
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}
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}
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}
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static int __init s5p_mfc_memory_init(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) {
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struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i];
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if (!area->base)
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continue;
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if (dma_declare_coherent_memory(area->dev, area->base,
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area->base, area->size,
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DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0)
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printk(KERN_ERR "Failed to declare coherent memory for MFC device (%ld bytes at 0x%08lx)\n",
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area->size, (unsigned long) area->base);
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}
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return 0;
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}
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device_initcall(s5p_mfc_memory_init);
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#ifdef CONFIG_OF
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int __init s5p_fdt_find_mfc_mem(unsigned long node, const char *uname,
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int depth, void *data)
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{
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__be32 *prop;
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unsigned long len;
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struct s5p_mfc_dt_meminfo *mfc_mem = data;
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if (!data)
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return 0;
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if (!of_flat_dt_is_compatible(node, mfc_mem->compatible))
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return 0;
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prop = of_get_flat_dt_prop(node, "samsung,mfc-l", &len);
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if (!prop || (len != 2 * sizeof(unsigned long)))
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return 0;
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mfc_mem->loff = be32_to_cpu(prop[0]);
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mfc_mem->lsize = be32_to_cpu(prop[1]);
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prop = of_get_flat_dt_prop(node, "samsung,mfc-r", &len);
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if (!prop || (len != 2 * sizeof(unsigned long)))
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return 0;
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mfc_mem->roff = be32_to_cpu(prop[0]);
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mfc_mem->rsize = be32_to_cpu(prop[1]);
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return 1;
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}
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#endif
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