Changes optee_rng driver to register itself has a OP-TEE service so that a device is bound for the driver when OP-TEE enumerates the PTA RNG service.
Cc: Sughosh Ganu sughosh.ganu@linaro.org Cc: Patrick Delaunay patrick.delaunay@foss.st.com Signed-off-by: Etienne Carriere etienne.carriere@linaro.org --- Changes since v3: - Unconditionally register driver with OPTEE_SERVICE_DRIVER() since the macro is now stubbed when CONFIG_OPTEE_SERVICE_DISCOVERY is disable.
No change since v2.
No change since v1. --- drivers/rng/Kconfig | 1 + drivers/rng/optee_rng.c | 7 ++++++- 2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/rng/Kconfig b/drivers/rng/Kconfig index c10f7d345b..14e95a6213 100644 --- a/drivers/rng/Kconfig +++ b/drivers/rng/Kconfig @@ -34,6 +34,7 @@ config RNG_MSM config RNG_OPTEE bool "OP-TEE based Random Number Generator support" depends on DM_RNG && OPTEE + default y if OPTEE_SERVICE_DISCOVERY help This driver provides support for the OP-TEE based Random Number Generator on ARM SoCs where hardware entropy sources are not diff --git a/drivers/rng/optee_rng.c b/drivers/rng/optee_rng.c index aa8ce864d3..410dfc053f 100644 --- a/drivers/rng/optee_rng.c +++ b/drivers/rng/optee_rng.c @@ -11,6 +11,9 @@ #include <dm/device.h> #include <dm/device_compat.h> #include <linux/sizes.h> +#include <tee/optee_service.h> + +#define DRIVER_NAME "optee-rng"
#define TEE_ERROR_HEALTH_TEST_FAIL 0x00000001
@@ -35,6 +38,8 @@ #define TA_HWRNG_UUID { 0xab7a617c, 0xb8e7, 0x4d8f, \ { 0x83, 0x01, 0xd0, 0x9b, 0x61, 0x03, 0x6b, 0x64 } }
+OPTEE_SERVICE_DRIVER(optee_rng, TA_HWRNG_UUID, DRIVER_NAME); + /** open_session_ta_hwrng() - Open session with hwrng Trusted App * * @dev: device @@ -177,7 +182,7 @@ static const struct dm_rng_ops optee_rng_ops = { };
U_BOOT_DRIVER(optee_rng) = { - .name = "optee-rng", + .name = DRIVER_NAME, .id = UCLASS_RNG, .ops = &optee_rng_ops, .probe = optee_rng_probe,