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Message-ID: <07125064-2a78-4515-bb48-655f2aec140f@linux.dev>
Date: Fri, 22 Mar 2024 05:53:07 +0800
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Subject: Re: [v10,20/27] drm/connector: hdmi: Add Infoframes generation
To: Maxime Ripard <mripard@kernel.org>,
 Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
 Thomas Zimmermann <tzimmermann@suse.de>, David Airlie <airlied@gmail.com>,
 Daniel Vetter <daniel@ffwll.ch>, Jonathan Corbet <corbet@lwn.net>,
 Sandy Huang <hjc@rock-chips.com>, =?UTF-8?Q?Heiko_St=C3=BCbner?=
 <heiko@sntech.de>, Chen-Yu Tsai <wens@csie.org>,
 Jernej Skrabec <jernej.skrabec@gmail.com>,
 Samuel Holland <samuel@sholland.org>
Cc: Hans Verkuil <hverkuil@xs4all.nl>,
 Sebastian Wick <sebastian.wick@redhat.com>,
 =?UTF-8?B?VmlsbGUgU3lyasOkbMOk?= <ville.syrjala@linux.intel.com>,
 dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org,
 linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
 linux-media@vger.kernel.org, linux-rockchip@lists.infradead.org,
 linux-sunxi@lists.linux.dev
References: <20240321-kms-hdmi-connector-state-v10-20-e6c178361898@kernel.org>
Content-Language: en-US
From: Sui Jingfeng <sui.jingfeng@linux.dev>
In-Reply-To: <20240321-kms-hdmi-connector-state-v10-20-e6c178361898@kernel.org>
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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.


: drivers/gpu/drm/drm_atomic_state_helper.o: in function `drm_atomic_helper_connector_hdmi_check':
drm_atomic_state_helper.c:(.text+0x15e4): undefined reference to `drm_hdmi_avi_infoframe_colorimetry'
: drm_atomic_state_helper.c:(.text+0x15f0): undefined reference to `drm_hdmi_avi_infoframe_bars'
: drm_atomic_state_helper.c:(.text+0x1638): undefined reference to `drm_hdmi_infoframe_set_hdr_metadata'
make[2]: *** [scripts/Makefile.vmlinux:37: vmlinux] Error 1

make[1]: *** [/home/suijingfeng/UpStream/drm-tip/Makefile:1162: vmlinux] Error 2

make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:240: __sub-make] Error 2

>   	help
>   	  CRTC helpers for KMS drivers.
>   
>   config DRM_DEBUG_DP_MST_TOPOLOGY_REFS
>           bool "Enable refcount backtrace history in the DP MST helpers"

-- 
Best regards,
Sui