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author | James Morris <james.l.morris@oracle.com> | 2012-06-10 22:52:10 +1000 |
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committer | James Morris <james.l.morris@oracle.com> | 2012-06-10 22:52:10 +1000 |
commit | 66dd07b88a1c9d446f32253da606b87324fa620e (patch) | |
tree | 4e0971bdd543585c7ab46716ae808a7fd82f9c35 /arch/arm/plat-samsung/s5p-dev-mfc.c | |
parent | f52c44cd27b4a0be37ef97f0466e4095ebebef3f (diff) | |
parent | cfaf025112d3856637ff34a767ef785ef5cf2ca9 (diff) |
Merge commit 'v3.5-rc2' into next
Diffstat (limited to 'arch/arm/plat-samsung/s5p-dev-mfc.c')
-rw-r--r-- | arch/arm/plat-samsung/s5p-dev-mfc.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/arm/plat-samsung/s5p-dev-mfc.c b/arch/arm/plat-samsung/s5p-dev-mfc.c new file mode 100644 index 000000000000..ad6089465e2a --- /dev/null +++ b/arch/arm/plat-samsung/s5p-dev-mfc.c @@ -0,0 +1,71 @@ +/* + * 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> + +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); |