diff options
| author | Kyungmin Park <kyungmin.park@samsung.com> | 2011-10-18 04:34:04 +0400 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-10-27 00:32:27 +0400 |
| commit | b3bf915308ca2b50f3beec6cc824083870f0f4b5 (patch) | |
| tree | 955978242b333e1388358b4b50b5f8f4a5abca04 /include/linux/mmc/core.h | |
| parent | d9ddd62943ee07a75d0428ffcf52f1a747a28c39 (diff) | |
| download | linux-b3bf915308ca2b50f3beec6cc824083870f0f4b5.tar.xz | |
mmc: core: new discard feature support at eMMC v4.5
MMC v4.5 supports the DISCARD feature (CMD38). It's different from
trim and there's no check bit. Currently it's only supported at v4.5.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/mmc/core.h')
| -rw-r--r-- | include/linux/mmc/core.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 9585835cbc42..e918120235bd 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -146,6 +146,7 @@ extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int); #define MMC_ERASE_ARG 0x00000000 #define MMC_SECURE_ERASE_ARG 0x80000000 #define MMC_TRIM_ARG 0x00000001 +#define MMC_DISCARD_ARG 0x00000003 #define MMC_SECURE_TRIM1_ARG 0x80000001 #define MMC_SECURE_TRIM2_ARG 0x80008000 @@ -156,6 +157,7 @@ extern int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr, unsigned int arg); extern int mmc_can_erase(struct mmc_card *card); extern int mmc_can_trim(struct mmc_card *card); +extern int mmc_can_discard(struct mmc_card *card); extern int mmc_can_sanitize(struct mmc_card *card); extern int mmc_can_secure_erase_trim(struct mmc_card *card); extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from, |