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mtd: denali: Drop custom dma mapping functions

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Drop local dma_map_single() and dma_unmap_single() and use arch specific
common implementation

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Vignesh Raghavendra 2020-01-16 14:23:47 +05:30 • committed by Tom Rini
parent eaa8b04da3
commit 6fff562baf
1 changed files with 3 additions and 32 deletions
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35
drivers/mtd/nand/raw/denali.c
View file

@ -5,7 +5,7 @@
* Copyright (C) 2009-2010, Intel Corporation and its suppliers.
*/
#include <cpu_func.h>
#include <asm/dma-mapping.h>
#include <dm.h>
#include <nand.h>
#include <linux/bitfield.h>
@ -17,35 +17,6 @@
#include "denali.h"
static dma_addr_t dma_map_single(void *dev, void *ptr, size_t size,
enum dma_data_direction dir)
{
unsigned long addr = (unsigned long)ptr;
size = ALIGN(size, ARCH_DMA_MINALIGN);
if (dir == DMA_FROM_DEVICE)
invalidate_dcache_range(addr, addr + size);
else
flush_dcache_range(addr, addr + size);
return addr;
}
static void dma_unmap_single(void *dev, dma_addr_t addr, size_t size,
enum dma_data_direction dir)
{
size = ALIGN(size, ARCH_DMA_MINALIGN);
if (dir != DMA_TO_DEVICE)
invalidate_dcache_range(addr, addr + size);
}
static int dma_mapping_error(void *dev, dma_addr_t addr)
{
return 0;
}
#define DENALI_NAND_NAME "denali-nand"
/* for Indexed Addressing */
@ -565,7 +536,7 @@ static int denali_dma_xfer(struct denali_nand_info *denali, void *buf,
enum dma_data_direction dir = write ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
int ret = 0;
dma_addr = dma_map_single(denali->dev, buf, size, dir);
dma_addr = dma_map_single(buf, size, dir);
if (dma_mapping_error(denali->dev, dma_addr)) {
dev_dbg(denali->dev, "Failed to DMA-map buffer. Trying PIO.\n");
return denali_pio_xfer(denali, buf, size, page, raw, write);
@ -606,7 +577,7 @@ static int denali_dma_xfer(struct denali_nand_info *denali, void *buf,
iowrite32(0, denali->reg + DMA_ENABLE);
dma_unmap_single(denali->dev, dma_addr, size, dir);
dma_unmap_single(buf, size, dir);
if (irq_status & INTR__ERASED_PAGE)
memset(buf, 0xff, size);