crypto: atmel-ecc - factor out code that can be shared

In preparation of adding support for the random number generator in Atmel atsha204a devices, refactor the existing atmel-ecc driver (which drives hardware that is closely related) so we can share the basic I2C and command queuing routines. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
mariux64 · May 30, 2019 · c34a320 · c34a320
1 parent 3c756aa
commit c34a320
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diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
@@ -519,9 +519,13 @@ config CRYPTO_DEV_ATMEL_SHA
 	  To compile this driver as a module, choose M here: the module
 	  will be called atmel-sha.
 
+config CRYPTO_DEV_ATMEL_I2C
+	tristate
+
 config CRYPTO_DEV_ATMEL_ECC
 	tristate "Support for Microchip / Atmel ECC hw accelerator"
 	depends on I2C
+	select CRYPTO_DEV_ATMEL_I2C
 	select CRYPTO_ECDH
 	select CRC16
 	help

diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
@@ -2,6 +2,7 @@
 obj-$(CONFIG_CRYPTO_DEV_ATMEL_AES) += atmel-aes.o
 obj-$(CONFIG_CRYPTO_DEV_ATMEL_SHA) += atmel-sha.o
 obj-$(CONFIG_CRYPTO_DEV_ATMEL_TDES) += atmel-tdes.o
+obj-$(CONFIG_CRYPTO_DEV_ATMEL_I2C) += atmel-i2c.o
 obj-$(CONFIG_CRYPTO_DEV_ATMEL_ECC) += atmel-ecc.o
 obj-$(CONFIG_CRYPTO_DEV_CAVIUM_ZIP) += cavium/
 obj-$(CONFIG_CRYPTO_DEV_CCP) += ccp/