From: Gao Chao gaochao49@huawei.com
[ Upstream commit a67664860f7833015a683ea295f7c79ac2901332 ]
If CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20=y && CONFIG_DRM_DISPLAY_HELPER=m, bulding fails:
drivers/gpu/drm/panel/panel-samsung-atna33xc20.o: In function `atana33xc20_probe': panel-samsung-atna33xc20.c:(.text+0x744): undefined reference to `drm_panel_dp_aux_backlight' make: *** [vmlinux] Error 1
Let CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20 select DRM_DISPLAY_DP_HELPER and CONFIG_DRM_DISPLAY_HELPER to fix this error.
Fixes: 32ce3b320343 ("drm/panel: atna33xc20: Introduce the Samsung ATNA33XC20 panel") Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Gao Chao gaochao49@huawei.com Reviewed-by: Douglas Anderson dianders@chromium.org Signed-off-by: Douglas Anderson dianders@chromium.org Link: https://patchwork.freedesktop.org/patch/msgid/20220524024551.539-1-gaochao49... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/panel/Kconfig | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index ddf5f38e8731..abc5271af4eb 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -428,6 +428,8 @@ config DRM_PANEL_SAMSUNG_ATNA33XC20 depends on OF depends on BACKLIGHT_CLASS_DEVICE depends on PM + select DRM_DISPLAY_DP_HELPER + select DRM_DISPLAY_HELPER select DRM_DP_AUX_BUS help DRM panel driver for the Samsung ATNA33XC20 panel. This panel can't