diff options
| author | Krishna Konda <kkonda@codeaurora.org> | 2015-06-29 19:34:35 -0700 |
|---|---|---|
| committer | Subhash Jadavani <subhashj@codeaurora.org> | 2016-05-31 15:26:54 -0700 |
| commit | d3e52fdfea833ef55f07ce6b135fa35c600aa8d6 (patch) | |
| tree | 2b915c115693763aac9584cc537509f08738fb91 /drivers/mmc | |
| parent | 396e0ff6eb9c516e4d2986c4f9adae7aa3f785e5 (diff) | |
mmc: core: expose info about enhanced rpmb support
Following eMMC JEDEC JESD84-B51 standard, an ehannced form of
rpmb is supported. What this enhanced mode supports is in
addition to be able to write one rpmb or two rpmb frames at a
time, 32 frames can be written at a time.
Expose this information present in ext csd field so that the
user space application that wants to make use of this can do
so.
Change-Id: I53fd962fd7e04b5d2d7804c289d7865c2c5618d5
Signed-off-by: Krishna Konda <kkonda@codeaurora.org>
[subhashj@codeaurora.org: fixed trivial merge conflicts]
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 9a4b1a859cfa..5a1493c19ade 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -644,6 +644,9 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) mmc_hostname(card->host), card->ext_csd.barrier_support, card->ext_csd.cache_flush_policy); + card->ext_csd.enhanced_rpmb_supported = + (card->ext_csd.rel_param & + EXT_CSD_WR_REL_PARAM_EN_RPMB_REL_WR); } else { card->ext_csd.cmdq_support = 0; card->ext_csd.cmdq_depth = 0; @@ -797,6 +800,8 @@ MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", card->ext_csd.enhanced_area_offset); MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); +MMC_DEV_ATTR(enhanced_rpmb_supported, "%#x\n", + card->ext_csd.enhanced_rpmb_supported); MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); static ssize_t mmc_fwrev_show(struct device *dev, @@ -832,6 +837,7 @@ static struct attribute *mmc_std_attrs[] = { &dev_attr_enhanced_area_offset.attr, &dev_attr_enhanced_area_size.attr, &dev_attr_raw_rpmb_size_mult.attr, + &dev_attr_enhanced_rpmb_supported.attr, &dev_attr_rel_sectors.attr, NULL, }; |