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drm/vc4: Skip writes to disabled packet RAM

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This path actually occurs when audio is started during a hdmi mode set.
As the data will be written by vc4_hdmi_set_infoframes when packet RAM
is enabled again, don't treat as an error

Signed-off-by: Dom Cobley <popcornmix@gmail.com>
This commit is contained in:
Dom Cobley
2021-12-10 18:03:18 +00:00
parent fabe5ea1a0
commit 83e66038c2
2 changed files with 10 additions and 1 deletions
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5
drivers/gpu/drm/vc4/vc4_hdmi.c
View File

@@ -684,6 +684,7 @@ static void vc4_hdmi_encoder_post_crtc_disable(struct drm_encoder *encoder,
mutex_lock(&vc4_hdmi->mutex);
vc4_hdmi->output_enabled = false;
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 0);
@@ -1200,6 +1201,7 @@ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
VC4_HDMI_RAM_PACKET_ENABLE);
spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
vc4_hdmi->output_enabled = true;
vc4_hdmi_set_infoframes(encoder);
}
@@ -1605,7 +1607,8 @@ static int vc4_hdmi_audio_prepare(struct device *dev, void *data,
spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
memcpy(&vc4_hdmi->audio.infoframe, &params->cea, sizeof(params->cea));
vc4_hdmi_set_audio_infoframe(encoder);
if (vc4_hdmi->output_enabled)
vc4_hdmi_set_audio_infoframe(encoder);
mutex_unlock(&vc4_hdmi->mutex);

6
drivers/gpu/drm/vc4/vc4_hdmi.h
View File

@@ -208,6 +208,12 @@ struct vc4_hdmi {
*/
struct drm_display_mode saved_adjusted_mode;
/**
* @output_enabled: Is the HDMI controller currently active?
* Protected by @mutex.
*/
bool output_enabled;
/**
* @scdc_enabled: Is the HDMI controller currently running with
* the scrambler on? Protected by @mutex.