HDMI 1.4b support the CEA video modes as per range of CEA-861-D (VIC 1-64).
For any other mode, the VIC filed in AVI infoframes should be 0.
HDMI 2.0 sinks, support video modes range as per CEA-861-F spec, which is
extended to (VIC 1-107).
This patch adds a bool input variable, which indicates if the connected
sink is a HDMI 2.0 sink or not. This will make sure that we don't pass a
HDMI 2.0 VIC to a HDMI 1.4 sink.
This patch touches all drm drivers, who are callers of this function
drm_hdmi_avi_infoframe_from_display_mode but to make sure there is
no change in current behavior, is_hdmi2 is kept as false.
In case of I915 driver, this patch:
- checks if the connected display is HDMI 2.0.
- HDMI infoframes carry one of this two type of information:
	- VIC for 4K modes for HDMI 1.4 sinks
	- S3D information for S3D modes
  As CEA-861-F has already defined VICs for 4K videomodes, this
  patch doesn't allow sending HDMI infoframes for HDMI 2.0 sinks,
  until the mode is 3D.
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Jose Abreu <jose.abreu@synopsys.com>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
PS: This patch touches a few lines in few files, which were
already above 80 char, so checkpatch gives 80 char warning again.
- gpu/drm/omapdrm/omap_encoder.c
- gpu/drm/i915/intel_sdvo.c
V2: Rebase, Added r-b from Andrzej
V3: Addressed review comment from Ville:
	- Do not send VICs in both AVI-IF and HDMI-IF
	  send only one of it.
V4: Rebase
V5: Added r-b from Neil.
    Addressed review comments from Ville
    - Do not block HDMI vendor IF, instead check for VIC while
      handling AVI infoframes
V6: Rebase
V7: Rebase
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1499960000-9232-2-git-send-email-shashank.sharma@intel.com
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
        dce_v10_0_audio_write_sad_regs(encoder);
        dce_v10_0_audio_write_latency_fields(encoder, mode);
 
-       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
        if (err < 0) {
                DRM_ERROR("failed to setup AVI infoframe: %zd\n", err);
                return;
 
        dce_v11_0_audio_write_sad_regs(encoder);
        dce_v11_0_audio_write_latency_fields(encoder, mode);
 
-       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
        if (err < 0) {
                DRM_ERROR("failed to setup AVI infoframe: %zd\n", err);
                return;
 
        ssize_t err;
        u32 tmp;
 
-       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
        if (err < 0) {
                DRM_ERROR("failed to setup AVI infoframe: %zd\n", err);
                return;
 
        dce_v8_0_audio_write_sad_regs(encoder);
        dce_v8_0_audio_write_latency_fields(encoder, mode);
 
-       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
        if (err < 0) {
                DRM_ERROR("failed to setup AVI infoframe: %zd\n", err);
                return;
 
 
        mutex_lock(&anx78xx->lock);
 
-       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, adjusted_mode);
+       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, adjusted_mode,
+                                                      false);
        if (err) {
                DRM_ERROR("Failed to setup AVI infoframe: %d\n", err);
                goto unlock;
 
        if (ret)
                return;
 
-       ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, adj);
+       ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, adj, false);
        if (ret < 0) {
                DRM_ERROR("couldn't fill AVI infoframe\n");
                return;
 
        u8 val;
 
        /* Initialise info frame from DRM mode */
-       drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+       drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
 
        if (hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format))
                frame.colorspace = HDMI_COLORSPACE_YUV444;
 
  *                                              data from a DRM display mode
  * @frame: HDMI AVI infoframe
  * @mode: DRM display mode
+ * @is_hdmi2_sink: Sink is HDMI 2.0 compliant
  *
  * Return: 0 on success or a negative error code on failure.
  */
 int
 drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame,
-                                        const struct drm_display_mode *mode)
+                                        const struct drm_display_mode *mode,
+                                        bool is_hdmi2_sink)
 {
        int err;
 
 
        frame->video_code = drm_match_cea_mode(mode);
 
+       /*
+        * HDMI 1.4 VIC range: 1 <= VIC <= 64 (CEA-861-D) but
+        * HDMI 2.0 VIC range: 1 <= VIC <= 107 (CEA-861-F). So we
+        * have to make sure we dont break HDMI 1.4 sinks.
+        */
+       if (!is_hdmi2_sink && frame->video_code > 64)
+               frame->video_code = 0;
+
+       /*
+        * HDMI spec says if a mode is found in HDMI 1.4b 4K modes
+        * we should send its VIC in vendor infoframes, else send the
+        * VIC in AVI infoframes. Lets check if this mode is present in
+        * HDMI 1.4b 4K modes
+        */
+       if (frame->video_code) {
+               u8 vendor_if_vic = drm_match_hdmi_mode(mode);
+               bool is_s3d = mode->flags & DRM_MODE_FLAG_3D_MASK;
+
+               if (drm_valid_hdmi_vic(vendor_if_vic) && !is_s3d)
+                       frame->video_code = 0;
+       }
+
        frame->picture_aspect = HDMI_PICTURE_ASPECT_NONE;
 
        /*
 
        }
 
        ret = drm_hdmi_avi_infoframe_from_display_mode(&frm.avi,
-                       &hdata->current_mode);
+                       &hdata->current_mode, false);
        if (!ret)
                ret = hdmi_avi_infoframe_pack(&frm.avi, buf, sizeof(buf));
        if (ret > 0) {
 
 {
        union hdmi_infoframe frame;
 
-       drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode);
+       drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false);
        frame.avi.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
 
        tda998x_write_if(priv, DIP_IF_FLAGS_IF2, REG_IF2_HB0, &frame);
 
        struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
        const struct drm_display_mode *adjusted_mode =
                &crtc_state->base.adjusted_mode;
+       struct drm_connector *connector = &intel_hdmi->attached_connector->base;
+       bool is_hdmi2_sink = connector->display_info.hdmi.scdc.supported;
        union hdmi_infoframe frame;
        int ret;
 
        ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
-                                                      adjusted_mode);
+                                                      adjusted_mode,
+                                                      is_hdmi2_sink);
        if (ret < 0) {
                DRM_ERROR("couldn't fill AVI infoframe\n");
                return;
 
        ssize_t len;
 
        ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
-                                                      &pipe_config->base.adjusted_mode);
+                                                      &pipe_config->base.adjusted_mode,
+                                                      false);
        if (ret < 0) {
                DRM_ERROR("couldn't fill AVI infoframe\n");
                return false;
 
        u8 buffer[17];
        ssize_t err;
 
-       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
        if (err < 0) {
                dev_err(hdmi->dev,
                        "Failed to get AVI infoframe from mode: %zd\n", err);
 
        u32 val;
        int len;
 
-       drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode);
+       drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false);
 
        len = hdmi_infoframe_pack(&frame, buffer, sizeof(buffer));
        if (len < 0) {
 
        if (!drm_detect_hdmi_monitor(nv_connector->edid))
                return;
 
-       ret = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame.avi, mode);
+       ret = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame.avi, mode,
+                                                      false);
        if (!ret) {
                /* We have an AVI InfoFrame, populate it to the display */
                args.pwr.avi_infoframe_length
 
        if (hdmi_mode && dssdev->driver->set_hdmi_infoframe) {
                struct hdmi_avi_infoframe avi;
 
-               r = drm_hdmi_avi_infoframe_from_display_mode(&avi, adjusted_mode);
+               r = drm_hdmi_avi_infoframe_from_display_mode(&avi, adjusted_mode,
+                                                            false);
                if (r == 0)
                        dssdev->driver->set_hdmi_infoframe(dssdev, &avi);
        }
 
        if (!connector)
                return -EINVAL;
 
-       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
        if (err < 0) {
                DRM_ERROR("failed to setup AVI infoframe: %d\n", err);
                return err;
 
        union hdmi_infoframe frame;
        int rc;
 
-       rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode);
+       rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false);
 
        if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV444)
                frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
 
 
        DRM_DEBUG_DRIVER("\n");
 
-       ret = drm_hdmi_avi_infoframe_from_display_mode(&infoframe, mode);
+       ret = drm_hdmi_avi_infoframe_from_display_mode(&infoframe, mode, false);
        if (ret < 0) {
                DRM_ERROR("failed to setup AVI infoframe: %d\n", ret);
                return ret;
 
        u8 buffer[17];
        int i, ret;
 
-       ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+       ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
        if (ret < 0) {
                DRM_ERROR("Failed to get infoframes from mode\n");
                return ret;
 
        u8 buffer[17];
        ssize_t err;
 
-       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
        if (err < 0) {
                dev_err(hdmi->dev, "failed to setup AVI infoframe: %zd\n", err);
                return;
 
        value &= ~INFOFRAME_CTRL_ENABLE;
        tegra_sor_writel(sor, value, SOR_HDMI_AVI_INFOFRAME_CTRL);
 
-       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+       err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
        if (err < 0) {
                dev_err(sor->dev, "failed to setup AVI infoframe: %d\n", err);
                return err;
 
        union hdmi_infoframe frame;
        int ret;
 
-       ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode);
+       ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false);
        if (ret < 0) {
                DRM_ERROR("couldn't fill AVI infoframe\n");
                return;
 
        union hdmi_infoframe frame;
        int ret;
 
-       ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode);
+       ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false);
        if (ret) {
                DRM_DEV_ERROR(hdmi->dev, "failed to get avi infoframe: %d\n",
                              ret);
 
 
 int
 drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame,
-                                        const struct drm_display_mode *mode);
+                                        const struct drm_display_mode *mode,
+                                        bool is_hdmi2_sink);
 int
 drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
                                            const struct drm_display_mode *mode);