tpm: rng: Add driver model interface for TPM RNG device
The TPM device has a builtin random number generator(RNG)
functionality. Expose the RNG functions of the TPM device to the
driver model so that they can be used by the EFI_RNG_PROTOCOL if the
protocol is installed.
Also change the function arguments and return type of the random
number functions to comply with the driver model api.
Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/drivers/rng/Makefile b/drivers/rng/Makefile
index 2494717..78f6105 100644
--- a/drivers/rng/Makefile
+++ b/drivers/rng/Makefile
@@ -13,3 +13,4 @@
obj-$(CONFIG_RNG_ROCKCHIP) += rockchip_rng.o
obj-$(CONFIG_RNG_IPROC200) += iproc_rng200.o
obj-$(CONFIG_RNG_SMCCC_TRNG) += smccc_trng.o
+obj-$(CONFIG_TPM_RNG) += tpm_rng.o