diff options
| -rw-r--r-- | drivers/platform/cznic/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/platform/cznic/Makefile | 2 | ||||
| -rw-r--r-- | drivers/platform/cznic/turris-omnia-mcu.h | 10 |
3 files changed, 19 insertions, 3 deletions
diff --git a/drivers/platform/cznic/Kconfig b/drivers/platform/cznic/Kconfig index b56c343e21d6..98f17562646e 100644 --- a/drivers/platform/cznic/Kconfig +++ b/drivers/platform/cznic/Kconfig @@ -18,7 +18,6 @@ config TURRIS_OMNIA_MCU depends on I2C depends on OF depends on GPIOLIB - depends on HW_RANDOM depends on RTC_CLASS select GPIOLIB_IRQCHIP help @@ -28,7 +27,6 @@ config TURRIS_OMNIA_MCU - board poweroff into true low power mode (with voltage regulators disabled) and the ability to configure wake up from this mode (via rtcwake) - - true random number generator (if available on the MCU) - GPIO pins - to get front button press events (the front button can be configured either to generate press events to the CPU or to change @@ -56,6 +54,14 @@ config TURRIS_OMNIA_MCU_WATCHDOG Say Y here to add support for watchdog provided by CZ.NIC's Turris Omnia MCU. +config TURRIS_OMNIA_MCU_TRNG + bool "Turris Omnia MCU true random number generator" + default y + depends on HW_RANDOM + help + Say Y here to add support for the true random number generator + provided by CZ.NIC's Turris Omnia MCU. + endif # TURRIS_OMNIA_MCU endif # CZNIC_PLATFORMS diff --git a/drivers/platform/cznic/Makefile b/drivers/platform/cznic/Makefile index 7599b4835056..0c28fa859391 100644 --- a/drivers/platform/cznic/Makefile +++ b/drivers/platform/cznic/Makefile @@ -4,5 +4,5 @@ obj-$(CONFIG_TURRIS_OMNIA_MCU) += turris-omnia-mcu.o turris-omnia-mcu-y := turris-omnia-mcu-base.o turris-omnia-mcu-y += turris-omnia-mcu-gpio.o turris-omnia-mcu-y += turris-omnia-mcu-sys-off-wakeup.o -turris-omnia-mcu-y += turris-omnia-mcu-trng.o +turris-omnia-mcu-$(CONFIG_TURRIS_OMNIA_MCU_TRNG) += turris-omnia-mcu-trng.o turris-omnia-mcu-$(CONFIG_TURRIS_OMNIA_MCU_WATCHDOG) += turris-omnia-mcu-watchdog.o diff --git a/drivers/platform/cznic/turris-omnia-mcu.h b/drivers/platform/cznic/turris-omnia-mcu.h index 85bf9ab39356..d07a32cfe238 100644 --- a/drivers/platform/cznic/turris-omnia-mcu.h +++ b/drivers/platform/cznic/turris-omnia-mcu.h @@ -52,9 +52,11 @@ struct omnia_mcu { struct watchdog_device wdt; #endif +#ifdef CONFIG_TURRIS_OMNIA_MCU_TRNG /* true random number generator */ struct hwrng trng; struct completion trng_entropy_ready; +#endif }; int omnia_cmd_write_read(const struct i2c_client *client, @@ -190,7 +192,15 @@ extern const struct attribute_group omnia_mcu_poweroff_group; int omnia_mcu_register_gpiochip(struct omnia_mcu *mcu); int omnia_mcu_register_sys_off_and_wakeup(struct omnia_mcu *mcu); + +#ifdef CONFIG_TURRIS_OMNIA_MCU_TRNG int omnia_mcu_register_trng(struct omnia_mcu *mcu); +#else +static inline int omnia_mcu_register_trng(struct omnia_mcu *mcu) +{ + return 0; +} +#endif #ifdef CONFIG_TURRIS_OMNIA_MCU_WATCHDOG int omnia_mcu_register_watchdog(struct omnia_mcu *mcu); |