Hi,

On Fri, Mar 22, 2024 at 05:53:07AM +0800, Sui Jingfeng wrote:
> Hi,
> 
> 
> On 2024/3/21 23:29, Maxime Ripard wrote:
> > Infoframes in KMS is usually handled by a bunch of low-level helpers
> > that require quite some boilerplate for drivers. This leads to
> > discrepancies with how drivers generate them, and which are actually
> > sent.
> > 
> > Now that we have everything needed to generate them in the HDMI
> > connector state, we can generate them in our common logic so that
> > drivers can simply reuse what we precomputed.
> > 
> > Signed-off-by: Maxime Ripard <mripard@kernel.org>
> > ---
> >   drivers/gpu/drm/Kconfig                            |   1 +
> >   drivers/gpu/drm/drm_atomic_state_helper.c          | 338 +++++++++++++++++++++
> >   drivers/gpu/drm/drm_connector.c                    |  14 +
> >   .../gpu/drm/tests/drm_atomic_state_helper_test.c   |   1 +
> >   drivers/gpu/drm/tests/drm_connector_test.c         |  12 +
> >   include/drm/drm_atomic_state_helper.h              |   8 +
> >   include/drm/drm_connector.h                        | 109 +++++++
> >   7 files changed, 483 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> > index 16029435b750..3d3193c7aa5f 100644
> > --- a/drivers/gpu/drm/Kconfig
> > +++ b/drivers/gpu/drm/Kconfig
> > @@ -97,10 +97,11 @@ config DRM_KUNIT_TEST
> >   	  If in doubt, say "N".
> >   config DRM_KMS_HELPER
> >   	tristate
> >   	depends on DRM
> > +	select DRM_DISPLAY_HDMI_HELPER
> 
> Should we select DRM_DISPLAY_HELPER here? Otherwise there will have
> some compile error emerged with default config.

Which default config are you talking about? This compiles fine with all
drm-misc defconfig, x86 defconfig and allmodconfig.

Maxime