diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c index d0db1acf11d7..7d2ed0ed2fe2 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c @@ -320,13 +320,17 @@ static int dw_hdmi_open(struct snd_pcm_substream *substream) struct snd_pcm_runtime *runtime = substream->runtime; struct snd_dw_hdmi *dw = substream->private_data; void __iomem *base = dw->data.base; + u8 *eld; int ret; runtime->hw = dw_hdmi_hw; - ret = snd_pcm_hw_constraint_eld(runtime, dw->data.eld); - if (ret < 0) - return ret; + eld = dw->data.get_eld(dw->data.hdmi); + if (eld) { + ret = snd_pcm_hw_constraint_eld(runtime, eld); + if (ret < 0) + return ret; + } ret = snd_pcm_limit_hw_rates(runtime); if (ret < 0) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-audio.h b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-audio.h index cb07dc0da5a7..f72d27208ebe 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-audio.h +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-audio.h @@ -9,15 +9,15 @@ struct dw_hdmi_audio_data { void __iomem *base; int irq; struct dw_hdmi *hdmi; - u8 *eld; + u8 *(*get_eld)(struct dw_hdmi *hdmi); }; struct dw_hdmi_i2s_audio_data { struct dw_hdmi *hdmi; - u8 *eld; void (*write)(struct dw_hdmi *hdmi, u8 val, int offset); u8 (*read)(struct dw_hdmi *hdmi, int offset); + u8 *(*get_eld)(struct dw_hdmi *hdmi); }; #endif diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c index feb04f127b55..f50b47ac11a8 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c @@ -135,8 +135,15 @@ static int dw_hdmi_i2s_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len) { struct dw_hdmi_i2s_audio_data *audio = data; + u8 *eld; + + eld = audio->get_eld(audio->hdmi); + if (eld) + memcpy(buf, eld, min_t(size_t, MAX_ELD_BYTES, len)); + else + /* Pass en empty ELD if connector not available */ + memset(buf, 0, len); - memcpy(buf, audio->eld, min_t(size_t, MAX_ELD_BYTES, len)); return 0; } diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index f08d0fded61f..e1211a5b334b 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -757,6 +757,14 @@ static void hdmi_enable_audio_clk(struct dw_hdmi *hdmi, bool enable) hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); } +static u8 *hdmi_audio_get_eld(struct dw_hdmi *hdmi) +{ + if (!hdmi->curr_conn) + return NULL; + + return hdmi->curr_conn->eld; +} + static void dw_hdmi_ahb_audio_enable(struct dw_hdmi *hdmi) { hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n); @@ -3431,7 +3439,7 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev, audio.base = hdmi->regs; audio.irq = irq; audio.hdmi = hdmi; - audio.eld = hdmi->connector.eld; + audio.get_eld = hdmi_audio_get_eld; hdmi->enable_audio = dw_hdmi_ahb_audio_enable; hdmi->disable_audio = dw_hdmi_ahb_audio_disable; @@ -3444,7 +3452,7 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev, struct dw_hdmi_i2s_audio_data audio; audio.hdmi = hdmi; - audio.eld = hdmi->connector.eld; + audio.get_eld = hdmi_audio_get_eld; audio.write = hdmi_writeb; audio.read = hdmi_readb; hdmi->enable_audio = dw_hdmi_i2s_audio_enable;