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Wed, 12 Mar 2025 08:41:21 -0700 (PDT) From: David Turner Date: Wed, 12 Mar 2025 15:40:56 +0000 Subject: [PATCH v3 2/2] drm/vc4: hdmi: Add jack detection to HDMI audio driver Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250312-vc4_hotplug-v3-2-d75878677de8@raspberrypi.com> References: <20250312-vc4_hotplug-v3-0-d75878677de8@raspberrypi.com> In-Reply-To: <20250312-vc4_hotplug-v3-0-d75878677de8@raspberrypi.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Dave Stevenson , =?utf-8?q?Ma=C3=ADra_Canal?= , Raspberry Pi Kernel Maintenance , Dmitry Baryshkov Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, David Turner , Stefan Wahren X-Mailer: b4 0.14.2 Add ALSA jack detection to the vc4-hdmi audio driver so userspace knows when to add/remove HDMI audio devices. Signed-off-by: Stefan Wahren Signed-off-by: David Turner Reviewed-by: Maxime Ripard --- drivers/gpu/drm/vc4/vc4_hdmi.c | 18 ++++++++++++++++++ drivers/gpu/drm/vc4/vc4_hdmi.h | 7 +++++++ 2 files changed, 25 insertions(+) diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 37a7d45695f236d3ab281d9a8676921fd434955c..a29a6ef266f9a5952af53030a9a= 2d313e2ecdfce 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -51,6 +51,7 @@ #include #include #include +#include #include #include #include @@ -2175,6 +2176,22 @@ static const struct drm_connector_hdmi_audio_funcs v= c4_hdmi_audio_funcs =3D { .shutdown =3D vc4_hdmi_audio_shutdown, }; =20 +static int vc4_hdmi_codec_init(struct snd_soc_pcm_runtime *rtd) +{ + struct vc4_hdmi *vc4_hdmi =3D snd_soc_card_get_drvdata(rtd->card); + struct snd_soc_component *component =3D snd_soc_rtd_to_codec(rtd, 0)->com= ponent; + int ret; + + ret =3D snd_soc_card_jack_new(rtd->card, "HDMI Jack", SND_JACK_LINEOUT, + &vc4_hdmi->hdmi_jack); + if (ret) { + dev_err(rtd->dev, "HDMI Jack creation failed: %d\n", ret); + return ret; + } + + return snd_soc_component_set_jack(component, &vc4_hdmi->hdmi_jack, NULL); +} + static int vc4_hdmi_audio_init(struct vc4_hdmi *vc4_hdmi) { const struct vc4_hdmi_register *mai_data =3D @@ -2288,6 +2305,7 @@ static int vc4_hdmi_audio_init(struct vc4_hdmi *vc4_h= dmi) dai_link->cpus->dai_name =3D dev_name(dev); dai_link->codecs->name =3D dev_name(&vc4_hdmi->connector.hdmi_audio.codec= _pdev->dev); dai_link->platforms->name =3D dev_name(dev); + dai_link->init =3D vc4_hdmi_codec_init; =20 card->dai_link =3D dai_link; card->num_links =3D 1; diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h index e3d989ca302b72533c374dfa3fd0d5bd7fe64a82..a31157c99bee6b33527c4b558fc= 72fff65d2a278 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.h +++ b/drivers/gpu/drm/vc4/vc4_hdmi.h @@ -4,6 +4,7 @@ #include #include #include +#include #include =20 #include "vc4_drv.h" @@ -211,6 +212,12 @@ struct vc4_hdmi { * KMS hooks. Protected by @mutex. */ enum hdmi_colorspace output_format; + + /** + * @hdmi_jack: Represents the connection state of the HDMI plug, for + * ALSA jack detection. + */ + struct snd_soc_jack hdmi_jack; }; =20 #define connector_to_vc4_hdmi(_connector) \ --=20 2.34.1