mirror of https://gitee.com/openkylin/linux.git
106 lines
2.6 KiB
C
106 lines
2.6 KiB
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 <linux/of_fdt.h>
|
|
#include <linux/of.h>
|
|
|
|
#include <mach/map.h>
|
|
#include <plat/devs.h>
|
|
#include <plat/irqs.h>
|
|
#include <plat/mfc.h>
|
|
|
|
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)\n",
|
|
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)\n",
|
|
area->size, (unsigned long) area->base);
|
|
}
|
|
return 0;
|
|
}
|
|
device_initcall(s5p_mfc_memory_init);
|
|
|
|
#ifdef CONFIG_OF
|
|
int __init s5p_fdt_find_mfc_mem(unsigned long node, const char *uname,
|
|
int depth, void *data)
|
|
{
|
|
__be32 *prop;
|
|
unsigned long len;
|
|
struct s5p_mfc_dt_meminfo *mfc_mem = data;
|
|
|
|
if (!data)
|
|
return 0;
|
|
|
|
if (!of_flat_dt_is_compatible(node, mfc_mem->compatible))
|
|
return 0;
|
|
|
|
prop = of_get_flat_dt_prop(node, "samsung,mfc-l", &len);
|
|
if (!prop || (len != 2 * sizeof(unsigned long)))
|
|
return 0;
|
|
|
|
mfc_mem->loff = be32_to_cpu(prop[0]);
|
|
mfc_mem->lsize = be32_to_cpu(prop[1]);
|
|
|
|
prop = of_get_flat_dt_prop(node, "samsung,mfc-r", &len);
|
|
if (!prop || (len != 2 * sizeof(unsigned long)))
|
|
return 0;
|
|
|
|
mfc_mem->roff = be32_to_cpu(prop[0]);
|
|
mfc_mem->rsize = be32_to_cpu(prop[1]);
|
|
|
|
return 1;
|
|
}
|
|
#endif
|