On Sun, 16 May 2021 at 09:42, Alper Nebi Yasak alpernebiyasak@gmail.com wrote:
This patch lets sandbox-cros-ec emulate a limited pwm device which has multiple channels but can only set a duty cycle for each, as the actual EC doesn't expose any functionality or information other than that. Mapping non-generic EC_PWM_TYPE_* values to these emulated pwm channels is not implemented as nothing in U-Boot uses these types.
This emulated pwm is then used to test the cros-ec-pwm driver in sandbox. Adding the cros-ec-pwm node to the sandbox test device-tree unfortunately makes it the first pwm device, so this also touches some other tests to make sure they still use the sandbox pwm.
Signed-off-by: Alper Nebi Yasak alpernebiyasak@gmail.com
This depends on a small fix [1] for cros-ec-pwm which otherwise fails to build.
[1] https://patchwork.ozlabs.org/project/uboot/patch/20210514134840.19380-1-alpe...
arch/sandbox/dts/test.dts | 6 +++ arch/sandbox/include/asm/test.h | 10 +++++ configs/sandbox64_defconfig | 1 + configs/sandbox_defconfig | 1 + configs/sandbox_flattree_defconfig | 1 + configs/sandbox_noinst_defconfig | 1 + configs/sandbox_spl_defconfig | 1 + drivers/misc/cros_ec_sandbox.c | 47 +++++++++++++++++++++++ test/cmd/pwm.c | 32 +++++++++++++++- test/dm/Makefile | 1 + test/dm/cros_ec_pwm.c | 60 ++++++++++++++++++++++++++++++ test/dm/panel.c | 2 +- test/dm/pwm.c | 6 ++- 13 files changed, 164 insertions(+), 5 deletions(-) create mode 100644 test/dm/cros_ec_pwm.c
Reviewed-by: Simon Glass sjg@chromium.org