powerpc/crypto: rework Kconfig

This patch creates a new submenu for the NX cryptographic
hardware accelerator and breaks the NX options into their own
Kconfig file under drivers/crypto/nx/Kconfig.

This will permit additional NX functionality to be easily
and more cleanly added in the future without touching
drivers/crypto/Makefile|Kconfig.

Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig
index db27c82..2d9150a 100644 (file)
--- a/arch/powerpc/configs/ppc64_defconfig
+++ b/arch/powerpc/configs/ppc64_defconfig
@@ -487,7 +487,8 @@ CONFIG_CRYPTO_TWOFISH=m
 CONFIG_CRYPTO_LZO=m
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
 CONFIG_CRYPTO_HW=y
-CONFIG_CRYPTO_DEV_NX=m
+CONFIG_CRYPTO_DEV_NX=y
+CONFIG_CRYPTO_DEV_NX_ENCRYPT=m
 CONFIG_VIRTUALIZATION=y
 CONFIG_KVM_BOOK3S_64=m
 CONFIG_KVM_BOOK3S_64_HV=y

diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig
index 1f65b3c..9f4a936 100644 (file)
--- a/arch/powerpc/configs/pseries_defconfig
+++ b/arch/powerpc/configs/pseries_defconfig
@@ -369,7 +369,8 @@ CONFIG_CRYPTO_TWOFISH=m
 CONFIG_CRYPTO_LZO=m
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
 CONFIG_CRYPTO_HW=y
-CONFIG_CRYPTO_DEV_NX=m
+CONFIG_CRYPTO_DEV_NX=y
+CONFIG_CRYPTO_DEV_NX_ENCRYPT=m
 CONFIG_VIRTUALIZATION=y
 CONFIG_KVM_BOOK3S_64=m
 CONFIG_KVM_BOOK3S_64_HV=y

diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 7d74d09..662588a 100644 (file)
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -298,21 +298,15 @@ config CRYPTO_DEV_TEGRA_AES
          will be called tegra-aes.
 
 config CRYPTO_DEV_NX
-       tristate "Support for Power7+ in-Nest cryptographic acceleration"
+       bool "Support for IBM Power7+ in-Nest cryptographic acceleration"
        depends on PPC64 && IBMVIO
-       select CRYPTO_AES
-       select CRYPTO_CBC
-       select CRYPTO_ECB
-       select CRYPTO_CCM
-       select CRYPTO_GCM
-       select CRYPTO_AUTHENC
-       select CRYPTO_XCBC
-       select CRYPTO_SHA256
-       select CRYPTO_SHA512
+       default n
        help
-         Support for Power7+ in-Nest cryptographic acceleration. This
-         module supports acceleration for AES and SHA2 algorithms. If you
-         choose 'M' here, this module will be called nx_crypto.
+         Support for Power7+ in-Nest cryptographic acceleration.
+
+if CRYPTO_DEV_NX
+       source "drivers/crypto/nx/Kconfig"
+endif
 
 config CRYPTO_DEV_UX500
        tristate "Driver for ST-Ericsson UX500 crypto hardware acceleration"

diff --git a/drivers/crypto/nx/Kconfig b/drivers/crypto/nx/Kconfig
new file mode 100644 (file)
index 0000000..dedde53
--- /dev/null
+++ b/drivers/crypto/nx/Kconfig
@@ -0,0 +1,17 @@
+config CRYPTO_DEV_NX_ENCRYPT
+       tristate "Encryption acceleration support"
+       depends on PPC64 && IBMVIO
+       default y
+       select CRYPTO_AES
+       select CRYPTO_CBC
+       select CRYPTO_ECB
+       select CRYPTO_CCM
+       select CRYPTO_GCM
+       select CRYPTO_AUTHENC
+       select CRYPTO_XCBC
+       select CRYPTO_SHA256
+       select CRYPTO_SHA512
+       help
+         Support for Power7+ in-Nest encryption acceleration. This
+         module supports acceleration for AES and SHA2 algorithms. If you
+         choose 'M' here, this module will be called nx_crypto.

diff --git a/drivers/crypto/nx/Makefile b/drivers/crypto/nx/Makefile
index 411ce59..7f110e4 100644 (file)
--- a/drivers/crypto/nx/Makefile
+++ b/drivers/crypto/nx/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_CRYPTO_DEV_NX) += nx-crypto.o
+obj-$(CONFIG_CRYPTO_DEV_NX_ENCRYPT) += nx-crypto.o
 nx-crypto-objs := nx.o \
                  nx_debugfs.o \
                  nx-aes-cbc.o \