michaelh/zephyr
1
0
Fork 0
Code Releases Activity

drivers: nrf: add support for forcing driver implementation

Browse source 
An external project extending the Zephyr RTOS and its drivers may have
subsystems that must use its own specific driver(s) when active. One
example is the nRF5x NVMC that must be scheduled in between radio
operations. A subsystem may also be dependent on its own drivers for
security, real-time and/or because of hardware constrains.

In order to not introduce non-Zephyr specific code into the Zephyr tree,
an option is added to disable the in-tree drivers in Zephyr. Because
Kconfig does not support a good way of de-selecting other symbols, a
variable on the form `<DRIVER>_FORCE_ALT` is added as a
dependency for each `<DRIVER>`. For example, the out-of-tree subsystem
will select `FLASH_NRF_FORCE_ALT` to disable the in-tree driver. A
solution for issue #8181 would open up for a more general solution,
however #8181 requires significant effort.

Support for out-of-tree drivers is added to Nordic drivers for
clock_control, entropy and flash.

A generic solution for this is desired. Issue #14527 is tracking that
progress.

Signed-off-by: Thomas Stenersen <thomas.stenersen@nordicsemi.no>
This commit is contained in:
Thomas Stenersen 2019-02-21 16:02:16 +01:00 • committed by Kumar Gala
commit db90e24326
3 changed files with 33 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

11
drivers/clock_control/Kconfig.nrf
View file

@ -4,6 +4,15 @@
# #
# SPDX-License-Identifier: Apache-2.0 # SPDX-License-Identifier: Apache-2.0
config CLOCK_CONTROL_NRF_FORCE_ALT
bool
depends on SOC_COMPATIBLE_NRF
help
This option can be enabled to force an alternative implementation
of the clock control driver.
if !CLOCK_CONTROL_NRF_FORCE_ALT
menuconfig CLOCK_CONTROL_NRF menuconfig CLOCK_CONTROL_NRF
bool "NRF Clock controller support" bool "NRF Clock controller support"
depends on SOC_COMPATIBLE_NRF depends on SOC_COMPATIBLE_NRF
@ -67,3 +76,5 @@ config CLOCK_CONTROL_NRF_K32SRC_20PPM
endchoice endchoice
endif # CLOCK_CONTROL_NRF endif # CLOCK_CONTROL_NRF
endif #!CLOCK_CONTROL_NRF_FORCE_ALT

11
drivers/entropy/Kconfig.nrf5
View file

@ -5,6 +5,15 @@
# #
# SPDX-License-Identifier: Apache-2.0 # SPDX-License-Identifier: Apache-2.0
config ENTROPY_NRF_FORCE_ALT
bool
depends on SOC_COMPATIBLE_NRF
help
This option can be enabled to force an alternative implementation
of the entropy driver.
if !ENTROPY_NRF_FORCE_ALT
menuconfig ENTROPY_NRF5_RNG menuconfig ENTROPY_NRF5_RNG
bool "nRF5 RNG driver" bool "nRF5 RNG driver"
depends on SOC_COMPATIBLE_NRF depends on SOC_COMPATIBLE_NRF
@ -70,3 +79,5 @@ config ENTROPY_NRF5_PRI
nRF5X RNG IRQ priority. nRF5X RNG IRQ priority.
endif # ENTROPY_NRF5_RNG endif # ENTROPY_NRF5_RNG
endif # !ENTROPY_NRF_FORCE_ALT

11
drivers/flash/Kconfig.nrf
View file

@ -1,3 +1,12 @@
config FLASH_NRF_FORCE_ALT
bool
depends on SOC_COMPATIBLE_NRF
help
This option can be enabled to force an alternative implementation
of the flash driver.
if !FLASH_NRF_FORCE_ALT
config SOC_FLASH_NRF config SOC_FLASH_NRF
bool "Nordic Semiconductor nRF flash driver" bool "Nordic Semiconductor nRF flash driver"
depends on SOC_FAMILY_NRF depends on SOC_FAMILY_NRF
@ -20,3 +29,5 @@ config SOC_FLASH_NRF_UICR
help help
Enable operations on UICR. Once enabled UICR are written or read as Enable operations on UICR. Once enabled UICR are written or read as
ordinary flash memory. Erase is possible for whole UICR at once. ordinary flash memory. Erase is possible for whole UICR at once.
endif #!FLASH_NRF_FORCE_ALT