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mtd: atmel_nand: add a new dt binding item for nand dma support

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This patch will set the nand dma support in dts. Since we will not use
cpu_is_xxx() in nand driver. We needn't include the mach/cpu.h any more.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Josh Wu
2013-05-09 15:34:55 +08:00
committed by David Woodhouse
parent 71b94e2e86
commit 1b7192658a
3 changed files with 5 additions and 8 deletions
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11
drivers/mtd/nand/atmel_nand.c
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@@ -43,8 +43,6 @@
#include <linux/platform_data/atmel.h>
#include <linux/pinctrl/consumer.h>
#include <mach/cpu.h>
static int use_dma = 1;
module_param(use_dma, int, 0);
@@ -128,11 +126,6 @@ struct atmel_nand_host {
static struct nand_ecclayout atmel_pmecc_oobinfo;
static int cpu_has_dma(void)
{
return cpu_is_at91sam9rl() || cpu_is_at91sam9g45();
}
/*
* Enable NAND.
*/
@@ -1336,6 +1329,8 @@ static int atmel_of_init_port(struct atmel_nand_host *host,
board->on_flash_bbt = of_get_nand_on_flash_bbt(np);
board->has_dma = of_property_read_bool(np, "atmel,nand-has-dma");
if (of_get_nand_bus_width(np) == 16)
board->bus_width_16 = 1;
@@ -1600,7 +1595,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
nand_chip->bbt_options |= NAND_BBT_USE_FLASH;
}
if (!cpu_has_dma())
if (!host->board.has_dma)
use_dma = 0;
if (use_dma) {