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Commit efff8e78 authored by Uri Yanai's avatar Uri Yanai Committed by Ulf Hansson
Browse files

mmc: Adding AUTO_BKOPS_EN bit set for Auto BKOPS support 



Adding dedicated flag for AUTO_BKOPS in card->ext_csd structure.
Read AUTO_BKOPS bit value from the device EXT_CSD and set to the
card->ext_csd structure.
In mmc_decode_ext_csd() add a print message in case the AUTO_BKOPS
is enabled

Signed-off-by: default avatarUri Yanai <uri.yanai@sandisk.com>
Signed-off-by: default avatarAlex Lemberg <alex.lemberg@sandisk.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 6962c2fb

drivers/mmc/core/mmc.c

+6 −0
Original line number Original line Diff line number Diff line
@@ -546,6 +546,12 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) 
			if (card->ext_csd.man_bkops_en)

			if (card->ext_csd.man_bkops_en)

				pr_debug("%s: MAN_BKOPS_EN bit is set\n",

				pr_debug("%s: MAN_BKOPS_EN bit is set\n",

					mmc_hostname(card->host));

					mmc_hostname(card->host));

			card->ext_csd.auto_bkops_en =

					(ext_csd[EXT_CSD_BKOPS_EN] &

						EXT_CSD_AUTO_BKOPS_MASK);

			if (card->ext_csd.auto_bkops_en)

				pr_debug("%s: AUTO_BKOPS_EN bit is set\n",

					mmc_hostname(card->host));

		}

		}





		/* check whether the eMMC card supports HPI */

		/* check whether the eMMC card supports HPI */

include/linux/mmc/card.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -83,6 +83,7 @@ struct mmc_ext_csd { 
	unsigned int		hpi_cmd;		/* cmd used as HPI */

	unsigned int		hpi_cmd;		/* cmd used as HPI */

	bool			bkops;		/* background support bit */

	bool			bkops;		/* background support bit */

	bool			man_bkops_en;	/* manual bkops enable bit */

	bool			man_bkops_en;	/* manual bkops enable bit */

	bool			auto_bkops_en;	/* auto bkops enable bit */

	unsigned int            data_sector_size;       /* 512 bytes or 4KB */

	unsigned int            data_sector_size;       /* 512 bytes or 4KB */

	unsigned int            data_tag_unit_size;     /* DATA TAG UNIT size */

	unsigned int            data_tag_unit_size;     /* DATA TAG UNIT size */

	unsigned int		boot_ro_lock;		/* ro lock support */

	unsigned int		boot_ro_lock;		/* ro lock support */

include/linux/mmc/mmc.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -407,6 +407,7 @@ static inline bool mmc_op_multi(u32 opcode) 
 * BKOPS modes

 * BKOPS modes

 */

 */

#define EXT_CSD_MANUAL_BKOPS_MASK	0x01

#define EXT_CSD_MANUAL_BKOPS_MASK	0x01

#define EXT_CSD_AUTO_BKOPS_MASK		0x02





/*

/*

 * Command Queue

 * Command Queue