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Fri, 24 Apr 2020 11:37:22 -0400 (EDT) From: Maxime Ripard To: Nicolas Saenz Julienne , Eric Anholt Subject: [PATCH v2 86/91] drm/vc4: hdmi: Reset audio infoframe on encoder_enable if previously streaming Date: Fri, 24 Apr 2020 17:35:07 +0200 Message-Id: X-Mailer: git-send-email 2.26.0 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200424_083724_753077_CBF68BD3 X-CRM114-Status: GOOD ( 10.53 ) X-Spam-Score: -0.9 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [64.147.123.27 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tim Gover , Dave Stevenson , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, Phil Elwell , linux-arm-kernel@lists.infradead.org, Maxime Ripard Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Dave Stevenson If the encoder is disabled and re-enabled (eg mode change) all infoframes are reset, whilst the audio subsystem know nothing about this change. The driver therefore needs to reinstate the audio infoframe for itself. Signed-off-by: Dave Stevenson Signed-off-by: Maxime Ripard --- drivers/gpu/drm/vc4/vc4_hdmi.c | 12 ++++++++++++ drivers/gpu/drm/vc4/vc4_hdmi.h | 2 ++ 2 files changed, 14 insertions(+) diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 07304d156eeb..cac55386236f 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -310,8 +310,16 @@ static void vc4_hdmi_set_audio_infoframe(struct drm_encoder *encoder) static void vc4_hdmi_set_infoframes(struct drm_encoder *encoder) { + struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); + vc4_hdmi_set_avi_infoframe(encoder); vc4_hdmi_set_spd_infoframe(encoder); + /* + * If audio was streaming, then we need to reenabled the audio + * infoframe here during encoder_enable. + */ + if (vc4_hdmi->audio.streaming) + vc4_hdmi_set_audio_infoframe(encoder); } static void vc4_hdmi_encoder_disable(struct drm_encoder *encoder) @@ -696,6 +704,7 @@ static void vc4_hdmi_audio_reset(struct vc4_hdmi *vc4_hdmi) struct device *dev = &vc4_hdmi->pdev->dev; int ret; + vc4_hdmi->audio.streaming = false; ret = vc4_hdmi_stop_packet(encoder, HDMI_INFOFRAME_TYPE_AUDIO); if (ret) dev_err(dev, "Failed to stop audio infoframe: %d\n", ret); @@ -799,6 +808,7 @@ static int vc4_hdmi_audio_trigger(struct snd_pcm_substream *substream, int cmd, switch (cmd) { case SNDRV_PCM_TRIGGER_START: vc4_hdmi_set_audio_infoframe(encoder); + vc4_hdmi->audio.streaming = true; if (vc4_hdmi->variant->phy_rng_enable) vc4_hdmi->variant->phy_rng_enable(vc4_hdmi); @@ -817,6 +827,8 @@ static int vc4_hdmi_audio_trigger(struct snd_pcm_substream *substream, int cmd, if (vc4_hdmi->variant->phy_rng_disable) vc4_hdmi->variant->phy_rng_disable(vc4_hdmi); + vc4_hdmi->audio.streaming = false; + break; default: break; diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h index 9a6831b941d9..eb0f91b57316 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.h +++ b/drivers/gpu/drm/vc4/vc4_hdmi.h @@ -85,6 +85,8 @@ struct vc4_hdmi_audio { int channels; struct snd_dmaengine_dai_dma_data dma_data; struct snd_pcm_substream *substream; + + bool streaming; }; /* General HDMI hardware state. */