Eric Lee / smarc-fsl-linux-kernel

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arch/arm/plat-s5p/dev-mfc.c 1.9 KB
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0f75a96bc   Kamil Debski   ARM: S5P: Add sup... 
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  /* linux/arch/arm/plat-s5p/dev-mfc.c
   *
   * Copyright (C) 2010-2011 Samsung Electronics Co.Ltd
   *
   * Base S5P MFC resource and device definitions
   *
   * 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/kernel.h>
  #include <linux/interrupt.h>
  #include <linux/platform_device.h>
  #include <linux/dma-mapping.h>
  #include <linux/memblock.h>
  #include <linux/ioport.h>
  
  #include <mach/map.h>
  #include <plat/devs.h>
  #include <plat/irqs.h>
  #include <plat/mfc.h>
0f75a96bc   Kamil Debski   ARM: S5P: Add sup... 
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  struct s5p_mfc_reserved_mem {
  	phys_addr_t	base;
  	unsigned long	size;
  	struct device	*dev;
  };
  
  static struct s5p_mfc_reserved_mem s5p_mfc_mem[2] __initdata;
  
  void __init s5p_mfc_reserve_mem(phys_addr_t rbase, unsigned int rsize,
  				phys_addr_t lbase, unsigned int lsize)
  {
  	int i;
  
  	s5p_mfc_mem[0].dev = &s5p_device_mfc_r.dev;
  	s5p_mfc_mem[0].base = rbase;
  	s5p_mfc_mem[0].size = rsize;
  
  	s5p_mfc_mem[1].dev = &s5p_device_mfc_l.dev;
  	s5p_mfc_mem[1].base = lbase;
  	s5p_mfc_mem[1].size = lsize;
  
  	for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) {
  		struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i];
  		if (memblock_remove(area->base, area->size)) {
  			printk(KERN_ERR "Failed to reserve memory for MFC device (%ld bytes at 0x%08lx)
  ",
  			       area->size, (unsigned long) area->base);
  			area->base = 0;
  		}
  	}
  }
  
  static int __init s5p_mfc_memory_init(void)
  {
  	int i;
  
  	for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) {
  		struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i];
  		if (!area->base)
  			continue;
  
  		if (dma_declare_coherent_memory(area->dev, area->base,
  				area->base, area->size,
  				DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0)
  			printk(KERN_ERR "Failed to declare coherent memory for MFC device (%ld bytes at 0x%08lx)
  ",
  			       area->size, (unsigned long) area->base);
  	}
  	return 0;
  }
  device_initcall(s5p_mfc_memory_init);