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From: Jernej Skrabec <jernej.skrabec@siol.net>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 3/3] video: dw_hdmi: Select HDMI mode only if monitor supports it
Date: Sat, 29 Apr 2017 14:43:37 +0200	[thread overview]
Message-ID: <20170429124337.16291-4-jernej.skrabec@siol.net> (raw)
In-Reply-To: <20170429124337.16291-1-jernej.skrabec@siol.net>

Some DVI monitors don't work in HDMI mode. Set it only if edid data
explicitly states that it is supported.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---

 drivers/video/dw_hdmi.c | 31 ++++++++++++++++---------------
 1 file changed, 16 insertions(+), 15 deletions(-)

diff --git a/drivers/video/dw_hdmi.c b/drivers/video/dw_hdmi.c
index 8a53109823..6039d676c5 100644
--- a/drivers/video/dw_hdmi.c
+++ b/drivers/video/dw_hdmi.c
@@ -414,13 +414,9 @@ static void hdmi_av_composer(struct dw_hdmi *hdmi,
 		   HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH :
 		   HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW);
 
-	/*
-	 * TODO(sjg at chromium.org>: Need to check for HDMI / DVI
-	 * inv_val |= (edid->hdmi_monitor_detected ?
-	 *	   HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE :
-	 *	   HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE);
-	 */
-	inv_val |= HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE;
+	inv_val |= (edid->hdmi_monitor ?
+		   HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE :
+		   HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE);
 
 	inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW;
 
@@ -459,7 +455,7 @@ static void hdmi_av_composer(struct dw_hdmi *hdmi,
 }
 
 /* hdmi initialization step b.4 */
-static void hdmi_enable_video_path(struct dw_hdmi *hdmi)
+static void hdmi_enable_video_path(struct dw_hdmi *hdmi, bool audio)
 {
 	uint clkdis;
 
@@ -484,8 +480,10 @@ static void hdmi_enable_video_path(struct dw_hdmi *hdmi)
 	clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE;
 	hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS);
 
-	clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE;
-	hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS);
+	if (audio) {
+		clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE;
+		hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS);
+	}
 }
 
 /* workaround to clear the overflow condition */
@@ -716,7 +714,8 @@ int dw_hdmi_enable(struct dw_hdmi *hdmi, const struct display_timing *edid)
 {
 	int ret;
 
-	debug("hdmi, mode info : clock %d hdis %d vdis %d\n",
+	debug("%s, mode info : clock %d hdis %d vdis %d\n",
+	      edid->hdmi_monitor ? "hdmi" : "dvi",
 	      edid->pixelclock.typ, edid->hactive.typ, edid->vactive.typ);
 
 	hdmi_av_composer(hdmi, edid);
@@ -725,11 +724,13 @@ int dw_hdmi_enable(struct dw_hdmi *hdmi, const struct display_timing *edid)
 	if (ret)
 		return ret;
 
-	hdmi_enable_video_path(hdmi);
+	hdmi_enable_video_path(hdmi, edid->hdmi_monitor);
 
-	hdmi_audio_fifo_reset(hdmi);
-	hdmi_audio_set_format(hdmi);
-	hdmi_audio_set_samplerate(hdmi, edid->pixelclock.typ);
+	if (edid->hdmi_monitor) {
+		hdmi_audio_fifo_reset(hdmi);
+		hdmi_audio_set_format(hdmi);
+		hdmi_audio_set_samplerate(hdmi, edid->pixelclock.typ);
+	}
 
 	hdmi_video_packetize(hdmi);
 	hdmi_video_sample(hdmi);
-- 
2.12.2

  parent reply	other threads:[~2017-04-29 12:43 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-29 12:43 [U-Boot] [PATCH 0/3] video: Fix issues with edid parsing Jernej Skrabec
2017-04-29 12:43 ` [U-Boot] [PATCH 1/3] edid: Set timings flags according to edid Jernej Skrabec
2017-04-30  3:49   ` Simon Glass
2017-05-15 18:31   ` Anatolij Gustschin
2017-04-29 12:43 ` [U-Boot] [PATCH 2/3] edid: Add HDMI flag to timing info Jernej Skrabec
2017-04-30  3:49   ` Simon Glass
2017-05-15 18:37   ` Anatolij Gustschin
2017-04-29 12:43 ` Jernej Skrabec [this message]
2017-04-30  3:49   ` [U-Boot] [PATCH 3/3] video: dw_hdmi: Select HDMI mode only if monitor supports it Simon Glass
2017-05-15 18:41   ` Anatolij Gustschin

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