crypto: allwinner - Add sun8i-ss cryptographic offloader

The Security System is an hardware cryptographic offloader present
on Allwinner SoCs A80 and A83T.
It is different from the previous sun4i-ss.

This driver supports AES cipher in CBC and ECB mode.

Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/allwinner/Kconfig

@@ -58,3 +58,30 @@ config CRYPTO_DEV_SUN8I_CE_DEBUG
 	  Say y to enable sun8i-ce debug stats.
 	  This will create /sys/kernel/debug/sun8i-ce/stats for displaying
 	  the number of requests per flow and per algorithm.
+
+config CRYPTO_DEV_SUN8I_SS
+	tristate "Support for Allwinner Security System cryptographic offloader"
+	select CRYPTO_BLKCIPHER
+	select CRYPTO_ENGINE
+	select CRYPTO_ECB
+	select CRYPTO_CBC
+	select CRYPTO_AES
+	select CRYPTO_DES
+	depends on CRYPTO_DEV_ALLWINNER
+	depends on PM
+	help
+	  Select y here to have support for the Security System available on
+	  Allwinner SoC A80, A83T.
+	  The Security System handle AES/3DES ciphers in ECB/CBC mode.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called sun8i-ss.
+
+config CRYPTO_DEV_SUN8I_SS_DEBUG
+	bool "Enable sun8i-ss stats"
+	depends on CRYPTO_DEV_SUN8I_SS
+	depends on DEBUG_FS
+	help
+	  Say y to enable sun8i-ss debug stats.
+	  This will create /sys/kernel/debug/sun8i-ss/stats for displaying
+	  the number of requests per flow and per algorithm.

drivers/crypto/allwinner/Makefile

@@ -1,2 +1,3 @@
 obj-$(CONFIG_CRYPTO_DEV_SUN4I_SS) += sun4i-ss/
 obj-$(CONFIG_CRYPTO_DEV_SUN8I_CE) += sun8i-ce/
+obj-$(CONFIG_CRYPTO_DEV_SUN8I_SS) += sun8i-ss/

drivers/crypto/allwinner/sun8i-ss/Makefile

@@ -0,0 +1,2 @@
+obj-$(CONFIG_CRYPTO_DEV_SUN8I_SS) += sun8i-ss.o
+sun8i-ss-y += sun8i-ss-core.o sun8i-ss-cipher.o