diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2011-12-29 13:09:51 +0100 |
|---|---|---|
| committer | Tushar Behera <tushar.behera@linaro.org> | 2013-03-18 19:29:45 +0530 |
| commit | 91e69bae575c5bfd7af0b21c59a405ee5aeaeca1 (patch) | |
| tree | ec9a62c8ed08731a6510c06c2cb4421dc7bc114b /arch | |
| parent | c3db067c053826ac91258735b6e9093a34cab1f6 (diff) | |
ARM: Samsung: use CMA for 2 memory banks for s5p-mfc device
Replace custom memory bank initialization using memblock_reserve and
dma_declare_coherent with a single call to CMA's dma_declare_contiguous.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/plat-samsung/s5p-dev-mfc.c | 51 |
1 files changed, 7 insertions, 44 deletions
diff --git a/arch/arm/plat-samsung/s5p-dev-mfc.c b/arch/arm/plat-samsung/s5p-dev-mfc.c index 5ec104b5408b..d7c679b75883 100644 --- a/arch/arm/plat-samsung/s5p-dev-mfc.c +++ b/arch/arm/plat-samsung/s5p-dev-mfc.c @@ -12,6 +12,7 @@ #include <linux/interrupt.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> +#include <linux/dma-contiguous.h> #include <linux/memblock.h> #include <linux/ioport.h> #include <linux/of_fdt.h> @@ -22,55 +23,17 @@ #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_contiguous(&s5p_device_mfc_r.dev, rsize, rbase, 0)) + printk(KERN_ERR "Failed to reserve memory for MFC device (%u bytes at 0x%08lx)\n", + rsize, (unsigned long) rbase); - 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; + if (dma_declare_contiguous(&s5p_device_mfc_l.dev, lsize, lbase, 0)) + printk(KERN_ERR "Failed to reserve memory for MFC device (%u bytes at 0x%08lx)\n", + rsize, (unsigned long) rbase); } -device_initcall(s5p_mfc_memory_init); #ifdef CONFIG_OF int __init s5p_fdt_find_mfc_mem(unsigned long node, const char *uname, |