summaryrefslogtreecommitdiff
path: root/drivers/mmc/host/Makefile
diff options
context:
space:
mode:
authorEric Biggers <ebiggers@google.com>2021-01-25 21:38:05 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2021-02-01 14:02:33 +0300
commit1e80709bdbfc1e1f3cac0ba8ed9a58f5789bcf51 (patch)
treea71aeac8841ea628f4e3f77b9734a7f70c419c8e /drivers/mmc/host/Makefile
parentee49d0321f02596a046173be16fddcdfb8ceb7c1 (diff)
downloadlinux-1e80709bdbfc1e1f3cac0ba8ed9a58f5789bcf51.tar.xz
mmc: cqhci: add support for inline encryption
Add support for eMMC inline encryption using the blk-crypto framework (Documentation/block/inline-encryption.rst). eMMC inline encryption support is specified by the upcoming JEDEC eMMC v5.2 specification. It is only specified for the CQ interface, not the non-CQ interface. Although the eMMC v5.2 specification hasn't been officially released yet, the crypto support was already agreed on several years ago, and it was already implemented by at least two major hardware vendors. Lots of hardware in the field already supports and uses it, e.g. Snapdragon 630 to give one example. eMMC inline encryption support is very similar to the UFS inline encryption support which was standardized in the UFS v2.1 specification and was already upstreamed. The only major difference is that eMMC limits data unit numbers to 32 bits, unlike UFS's 64 bits. Like we did with UFS, make the crypto support opt-in by individual drivers; don't enable it automatically whenever the hardware declares crypto support. This is necessary because in every case we've seen, some extra vendor-specific logic is needed to use the crypto support. Co-developed-by: Satya Tangirala <satyat@google.com> Signed-off-by: Satya Tangirala <satyat@google.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Satya Tangirala <satyat@google.com> Reviewed-and-tested-by: Peng Zhou <peng.zhou@mediatek.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Link: https://lore.kernel.org/r/20210125183810.198008-5-ebiggers@kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/Makefile')
-rw-r--r--drivers/mmc/host/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 19687ad42c6b..9ea86a18f012 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -103,6 +103,7 @@ obj-$(CONFIG_MMC_SDHCI_OMAP) += sdhci-omap.o
obj-$(CONFIG_MMC_SDHCI_SPRD) += sdhci-sprd.o
obj-$(CONFIG_MMC_CQHCI) += cqhci.o
cqhci-y += cqhci-core.o
+cqhci-$(CONFIG_MMC_CRYPTO) += cqhci-crypto.o
obj-$(CONFIG_MMC_HSQ) += mmc_hsq.o
ifeq ($(CONFIG_CB710_DEBUG),y)