[PATCH 4/6] drm/radeon/evergreen: setup HDMI before enabling it

[Rafał Miłecki]

Closed source driver fglrx seems to enable infoframes and audio packets
at the end, which makes sense, do the same.

Signed-off-by: Rafał Miłecki <zajec5 at gmail.com>
---
 drivers/gpu/drm/radeon/evergreen_hdmi.c |   15 +++++++++++----
 drivers/gpu/drm/radeon/evergreend.h     |    1 +
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c
index 8b64bf1..6b25c1b 100644
--- a/drivers/gpu/drm/radeon/evergreen_hdmi.c
+++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c
@@ -116,7 +116,6 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
 	       HDMI_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */
 
 	WREG32(AFMT_AUDIO_PACKET_CONTROL + offset,
-	       AFMT_AUDIO_SAMPLE_SEND | /* send audio packets */
 	       AFMT_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */
 
 	WREG32(HDMI_ACR_PACKET_CONTROL + offset,
@@ -129,8 +128,6 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
 	       HDMI_GC_CONT); /* send general control packets every frame */
 
 	WREG32(HDMI_INFOFRAME_CONTROL0 + offset,
-	       HDMI_AVI_INFO_SEND | /* enable AVI info frames */
-	       HDMI_AVI_INFO_CONT | /* send AVI info frames every frame/field */
 	       HDMI_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */
 	       HDMI_AUDIO_INFO_CONT); /* required for audio info values to be updated */
 
@@ -138,7 +135,6 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
 	       AFMT_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */
 
 	WREG32(HDMI_INFOFRAME_CONTROL1 + offset,
-	       HDMI_AVI_INFO_LINE(2) | /* anything other than 0 */
 	       HDMI_AUDIO_INFO_LINE(2)); /* anything other than 0 */
 
 	WREG32(HDMI_GC + offset, 0); /* unset HDMI_GC_AVMUTE */
@@ -165,6 +161,14 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
 	evergreen_hdmi_update_avi_infoframe(encoder, buffer, sizeof(buffer));
 	evergreen_hdmi_update_ACR(encoder, mode->clock);
 
+	WREG32_OR(HDMI_INFOFRAME_CONTROL0 + offset,
+		  HDMI_AVI_INFO_SEND | /* enable AVI info frames */
+		  HDMI_AVI_INFO_CONT); /* required for audio info values to be updated */
+
+	WREG32_P(HDMI_INFOFRAME_CONTROL1 + offset,
+		 HDMI_AVI_INFO_LINE(2), /* anything other than 0 */
+		 ~HDMI_AVI_INFO_LINE_MASK);
+
 	/*
 	 * At this point fglrx changes following regs:
 	 * DCE41: 0x7a70
@@ -172,6 +176,9 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
 	 * Is that something audio related?
 	 */
 
+	WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + offset,
+		  AFMT_AUDIO_SAMPLE_SEND); /* send audio packets */
+
 	/* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */
 	WREG32(AFMT_RAMP_CONTROL0 + offset, 0x00FFFFFF);
 	WREG32(AFMT_RAMP_CONTROL1 + offset, 0x007FFFFF);
diff --git a/drivers/gpu/drm/radeon/evergreend.h b/drivers/gpu/drm/radeon/evergreend.h
index 982d25a..e39e4f4 100644
--- a/drivers/gpu/drm/radeon/evergreend.h
+++ b/drivers/gpu/drm/radeon/evergreend.h
@@ -197,6 +197,7 @@
 #       define HDMI_MPEG_INFO_CONT           (1 << 9)
 #define HDMI_INFOFRAME_CONTROL1              0x7048
 #       define HDMI_AVI_INFO_LINE(x)         (((x) & 0x3f) << 0)
+#       define HDMI_AVI_INFO_LINE_MASK       (0x3f << 0)
 #       define HDMI_AUDIO_INFO_LINE(x)       (((x) & 0x3f) << 8)
 #       define HDMI_MPEG_INFO_LINE(x)        (((x) & 0x3f) << 16)
 #define HDMI_GENERIC_PACKET_CONTROL          0x704c
-- 
1.7.10.4