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Commit 5bb653e8 authored by Ezequiel Garcia's avatar Ezequiel Garcia Committed by David Woodhouse
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mtd: nand: pxa3xx: Allow to set/clear the 'spare enable' field 



Some commands (such as the ONFI parameter page read) need to
clear the 'spare enable' bit. This commit allows to set/clear
depending on the prepared command, instead of having it always
set.

Signed-off-by: default avatarEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: default avatarDaniel Mack <zonque@gmail.com>
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent cd9d1182

drivers/mtd/nand/pxa3xx_nand.c

+7 −0
Original line number Diff line number Diff line
@@ -185,6 +185,7 @@ struct pxa3xx_nand_info { 
	int			cs;

	int			use_ecc;	/* use HW ECC ? */

	int			use_dma;	/* use DMA ? */

	int			use_spare;	/* use spare ? */

	int			is_ready;



	unsigned int		page_size;	/* page size of attached chip */
@@ -325,6 +326,11 @@ static void pxa3xx_nand_start(struct pxa3xx_nand_info *info) 
	else

		ndcr &= ~NDCR_DMA_EN;



	if (info->use_spare)

		ndcr |= NDCR_SPARE_EN;

	else

		ndcr &= ~NDCR_SPARE_EN;



	ndcr |= NDCR_ND_RUN;



	/* clear status bits and run */
@@ -526,6 +532,7 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, 
	info->buf_count		= 0;

	info->oob_size		= 0;

	info->use_ecc		= 0;

	info->use_spare		= 1;

	info->use_dma		= (use_dma) ? 1 : 0;

	info->is_ready		= 0;

	info->retcode		= ERR_NONE;