drm/i915/hdmi: send AVI info frames on ILK+ as well

On Ironlake and above, we have per-transcoder DIP registers, so use them
for sending DIPs like AVI infoframes on ILK and above.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 00bd510..30d8aae 100644 (file)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3020,6 +3020,20 @@
 #define _TRANSA_DP_LINK_M2       0xe0048
 #define _TRANSA_DP_LINK_N2       0xe004c
 
+/* Per-transcoder DIP controls */
+
+#define _VIDEO_DIP_CTL_A         0xe0200
+#define _VIDEO_DIP_DATA_A        0xe0208
+#define _VIDEO_DIP_GCP_A         0xe0210
+
+#define _VIDEO_DIP_CTL_B         0xe1200
+#define _VIDEO_DIP_DATA_B        0xe1208
+#define _VIDEO_DIP_GCP_B         0xe1210
+
+#define TVIDEO_DIP_CTL(pipe) _PIPE(pipe, _VIDEO_DIP_CTL_A, _VIDEO_DIP_CTL_B)
+#define TVIDEO_DIP_DATA(pipe) _PIPE(pipe, _VIDEO_DIP_DATA_A, _VIDEO_DIP_DATA_B)
+#define TVIDEO_DIP_GCP(pipe) _PIPE(pipe, _VIDEO_DIP_GCP_A, _VIDEO_DIP_GCP_B)
+
 #define _TRANS_HTOTAL_B          0xe1000
 #define _TRANS_HBLANK_B          0xe1004
 #define _TRANS_HSYNC_B           0xe1008

diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index aa0a8e8..c220255 100644 (file)
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -112,6 +112,40 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
                   VIDEO_DIP_ENABLE_AVI);
 }
 
+static void intel_ironlake_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
+{
+       struct dip_infoframe avi_if = {
+               .type = DIP_TYPE_AVI,
+               .ver = DIP_VERSION_AVI,
+               .len = DIP_LEN_AVI,
+       };
+       uint32_t *data = (uint32_t *)&avi_if;
+       struct drm_device *dev = encoder->dev;
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+       struct drm_crtc *crtc = encoder->crtc;
+       struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+       int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
+       unsigned i;
+
+       if (!intel_hdmi->has_hdmi_sink)
+               return;
+
+       intel_wait_for_vblank(dev, intel_crtc->pipe);
+
+       I915_WRITE(reg, VIDEO_DIP_SELECT_AVI);
+
+       intel_dip_infoframe_csum(&avi_if);
+       for (i = 0; i < sizeof(avi_if); i += 4) {
+               I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
+               data++;
+       }
+
+       I915_WRITE(reg, VIDEO_DIP_ENABLE | VIDEO_DIP_SELECT_AVI |
+                  VIDEO_DIP_FREQ_VSYNC | (DIP_LEN_AVI << 8) |
+                  VIDEO_DIP_ENABLE_AVI);
+}
+
 static void intel_hdmi_mode_set(struct drm_encoder *encoder,
                                struct drm_display_mode *mode,
                                struct drm_display_mode *adjusted_mode)
@@ -149,7 +183,10 @@ static void intel_hdmi_mode_set(struct drm_encoder *encoder,
        I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
        POSTING_READ(intel_hdmi->sdvox_reg);
 
-       intel_hdmi_set_avi_infoframe(encoder);
+       if (HAS_PCH_SPLIT(dev))
+               intel_ironlake_hdmi_set_avi_infoframe(encoder);
+       else
+               intel_hdmi_set_avi_infoframe(encoder);
 }
 
 static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)