On Thu, Nov 16, 2017 at 08:10:55PM +0530, Sharma, Shashank wrote:
> Regards
>
> Shashank
>
>
> On 11/13/2017 10:34 PM, Ville Syrjala wrote:
> > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> >
> > Appedix F of HDMI 2.0 says that some HDMI sink may fail to switch from
> > 3D to 2D mode in a timely fashion if the source simply stops sending the
> > HDMI infoframe. The suggested workaround is to keep sending the
> > infoframe even when strictly not necessary (ie. no VIC and no S3D).
> > HDMI 1.4 does allow for this behaviour, stating that sending the
> > infoframe is optional in this case.
> >
> > The infoframe was first specified in HDMI 1.4, so in theory sinks
> > predating that may not appreciate us sending an uknown infoframe
> > their way. To avoid regressions let's try to determine if the sink
> > supports the infoframe or not. Unfortunately there's no direct way
> > to do that, so instead we'll just check if we managed to parse any
> > HDMI 1.4 4k or stereo modes from the EDID, and if so we assume the
> > sink will accept the infoframe. Also if the EDID contains the HDMI
> > 2.0 HDMI Forum VSDB we can assume the sink is prepared to receive
> > the infoframe.
> I am trying to get some sense from HDMI 2.0 spec section 10.2.1, which
> talks about
> switch from 3D to 2D. To me it looks like:
> If (sending_to_hdmi2_sinks) {
> - for 3d modes send HF-VSIF
> - for 2d modes && defined in H14b HFVSIF, send H14B-VSIF
> When you switch from 3d->2d {
> - send_HF-VSIF with 3D_valid bit = 0/1
> }
> } else { /* HDMI 1.4b sinks from Appendix F */
> - send H14b-VSIF with HDMI_video_format[2:0 = 0 OR 1]
> }
>
> Should we add a is_hdmi2 check and separate these cases ?
We don't support the HDMI forum infoframe. Maybe someone forgot to
implement that when adding the rest of HDMI 2.0 support? ;)
>
> >
> > v2: Fix the getting has_hdmi_infoframe from display_info
> > Always fail constructing the infoframe if the display
> > possibly can't handle it
> >
> > Cc: Shashank Sharma <shashank.sharma@xxxxxxxxx>
> > Cc: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
> > Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/bridge/sil-sii8620.c | 3 ++-
> > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 +++-
> > drivers/gpu/drm/drm_edid.c | 34 +++++++++++++++++++++++++------
> > drivers/gpu/drm/exynos/exynos_hdmi.c | 2 +-
> > drivers/gpu/drm/i915/intel_hdmi.c | 14 +++++++------
> > drivers/gpu/drm/mediatek/mtk_hdmi.c | 3 ++-
> > drivers/gpu/drm/nouveau/nv50_display.c | 3 ++-
> > drivers/gpu/drm/rockchip/inno_hdmi.c | 1 +
> > drivers/gpu/drm/sti/sti_hdmi.c | 4 +++-
> > drivers/gpu/drm/zte/zx_hdmi.c | 1 +
> > include/drm/drm_connector.h | 5 +++++
> > include/drm/drm_edid.h | 1 +
> > 12 files changed, 57 insertions(+), 18 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c
> > index b7eb704d0a8a..4417276ba02e 100644
> > --- a/drivers/gpu/drm/bridge/sil-sii8620.c
> > +++ b/drivers/gpu/drm/bridge/sil-sii8620.c
> > @@ -2220,8 +2220,9 @@ static bool sii8620_mode_fixup(struct drm_bridge *bridge,
> > union hdmi_infoframe frm;
> > u8 mhl_vic[] = { 0, 95, 94, 93, 98 };
> >
> > + /* FIXME: We need the connector here */
> > drm_hdmi_vendor_infoframe_from_display_mode(
> > - &frm.vendor.hdmi, adjusted_mode);
> > + &frm.vendor.hdmi, NULL, adjusted_mode);
> > vic = frm.vendor.hdmi.vic;
> > if (vic >= ARRAY_SIZE(mhl_vic))
> > vic = 0;
> > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > index a64ce7112288..b172139502d6 100644
> > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > @@ -1437,7 +1437,9 @@ static void hdmi_config_vendor_specific_infoframe(struct dw_hdmi *hdmi,
> > u8 buffer[10];
> > ssize_t err;
> >
> > - err = drm_hdmi_vendor_infoframe_from_display_mode(&frame, mode);
> > + err = drm_hdmi_vendor_infoframe_from_display_mode(&frame,
> > + &hdmi->connector,
> > + mode);
> > if (err < 0)
> > /*
> > * Going into that statement does not means vendor infoframe
> > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> > index 749d07a01772..9ada0ccf50df 100644
> > --- a/drivers/gpu/drm/drm_edid.c
> > +++ b/drivers/gpu/drm/drm_edid.c
> > @@ -3393,6 +3393,7 @@ static int
> > do_hdmi_vsdb_modes(struct drm_connector *connector, const u8 *db, u8 len,
> > const u8 *video_db, u8 video_len)
> > {
> > + struct drm_display_info *info = &connector->display_info;
> > int modes = 0, offset = 0, i, multi_present = 0, multi_len;
> > u8 vic_len, hdmi_3d_len = 0;
> > u16 mask;
> > @@ -3520,6 +3521,8 @@ do_hdmi_vsdb_modes(struct drm_connector *connector, const u8 *db, u8 len,
> > }
> >
> > out:
> > + if (modes > 0)
> > + info->has_hdmi_infoframe = true;
> > return modes;
> > }
> >
> > @@ -4243,6 +4246,8 @@ static void drm_parse_hdmi_forum_vsdb(struct drm_connector *connector,
> > struct drm_display_info *display = &connector->display_info;
> > struct drm_hdmi_info *hdmi = &display->hdmi;
> >
> > + display->has_hdmi_infoframe = true;
> > +
> > if (hf_vsdb[6] & 0x80) {
> > hdmi->scdc.supported = true;
> > if (hf_vsdb[6] & 0x40)
> > @@ -4416,6 +4421,7 @@ static void drm_add_display_info(struct drm_connector *connector,
> > info->cea_rev = 0;
> > info->max_tmds_clock = 0;
> > info->dvi_dual = false;
> > + info->has_hdmi_infoframe = false;
> >
> > if (edid->revision < 3)
> > return;
> > @@ -4903,6 +4909,7 @@ s3d_structure_from_display_mode(const struct drm_display_mode *mode)
> > * drm_hdmi_vendor_infoframe_from_display_mode() - fill an HDMI infoframe with
> > * data from a DRM display mode
> > * @frame: HDMI vendor infoframe
> > + * @connector: the connector
> I remember our old discussion where we realized that we will need this
> connector for all types of infoframes,
> eventually, do you think we should start thinking about creating a
> wrapper like drm_any_infoframe_from_display_mode(),
> and pass connector and desired type to it ?Or I am getting too ambitious
> targeting this series :) ?
> > * @mode: DRM display mode
> > *
> > * Note that there's is a need to send HDMI vendor infoframes only when using a
> > @@ -4913,8 +4920,15 @@ s3d_structure_from_display_mode(const struct drm_display_mode *mode)
> > */
> > int
> > drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
> > + struct drm_connector *connector,
> > const struct drm_display_mode *mode)
> > {
> > + /*
> > + * FIXME: sil-sii8620 doesn't have a connector around when
> > + * we need one, so we have to be prepared for a NULL connector.
> > + */
> > + bool has_hdmi_infoframe = connector ?
> > + connector->display_info.has_hdmi_infoframe : false;
> > int err;
> > u32 s3d_flags;
> > u8 vic;
> > @@ -4922,11 +4936,21 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
> > if (!frame || !mode)
> > return -EINVAL;
> >
> > + if (!has_hdmi_infoframe)
> > + return -EINVAL;
> > +
> > vic = drm_match_hdmi_mode(mode);
> > s3d_flags = mode->flags & DRM_MODE_FLAG_3D_MASK;
> >
> > - if (!vic && !s3d_flags)
> > - return -EINVAL;
> > + /*
> > + * Even if it's not absolutely necessary to send the infoframe
> > + * (ie.vic==0 and s3d_struct==0) we will still send it if we
> > + * know that the sink can handle it. This is based on a
> > + * suggestion in HDMI 2.0 Appendix F. Apparently some sinks
> > + * have trouble realizing that they shuld switch from 3D to 2D
> > + * mode if the source simply stops sending the infoframe when
> > + * it wants to switch from 3D to 2D.
> > + */
> >
> > if (vic && s3d_flags)
> > return -EINVAL;
> > @@ -4935,10 +4959,8 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
> > if (err < 0)
> > return err;
> >
> > - if (vic)
> > - frame->vic = vic;
> > - else
> > - frame->s3d_struct = s3d_structure_from_display_mode(mode);
> > + frame->vic = vic;
> > + frame->s3d_struct = s3d_structure_from_display_mode(mode);
> >
> > return 0;
> > }
> > diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
> > index 0109ff40b1db..812b2773ed69 100644
> > --- a/drivers/gpu/drm/exynos/exynos_hdmi.c
> > +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
> > @@ -795,7 +795,7 @@ static void hdmi_reg_infoframes(struct hdmi_context *hdata)
> > }
> >
> > ret = drm_hdmi_vendor_infoframe_from_display_mode(&frm.vendor.hdmi,
> > - &hdata->current_mode);
> > + &hdata->connector, &hdata->current_mode);
> > if (!ret)
> > ret = hdmi_vendor_infoframe_pack(&frm.vendor.hdmi, buf,
> > sizeof(buf));
> > diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
> > index 2d95db64cdf2..2ccba4ccf7ad 100644
> > --- a/drivers/gpu/drm/i915/intel_hdmi.c
> > +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> > @@ -512,12 +512,14 @@ static void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder,
> >
> > static void
> > intel_hdmi_set_hdmi_infoframe(struct drm_encoder *encoder,
> > - const struct intel_crtc_state *crtc_state)
> > + const struct intel_crtc_state *crtc_state,
> > + const struct drm_connector_state *conn_state)
> > {
> > union hdmi_infoframe frame;
> > int ret;
> >
> > ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
> > + conn_state->connector,
> > &crtc_state->base.adjusted_mode);
> > if (ret < 0)
> > return;
> > @@ -584,7 +586,7 @@ static void g4x_set_infoframes(struct drm_encoder *encoder,
> >
> > intel_hdmi_set_avi_infoframe(encoder, crtc_state);
> > intel_hdmi_set_spd_infoframe(encoder, crtc_state);
> > - intel_hdmi_set_hdmi_infoframe(encoder, crtc_state);
> > + intel_hdmi_set_hdmi_infoframe(encoder, crtc_state, conn_state);
> > }
> >
> > static bool hdmi_sink_is_deep_color(const struct drm_connector_state *conn_state)
> > @@ -725,7 +727,7 @@ static void ibx_set_infoframes(struct drm_encoder *encoder,
> >
> > intel_hdmi_set_avi_infoframe(encoder, crtc_state);
> > intel_hdmi_set_spd_infoframe(encoder, crtc_state);
> > - intel_hdmi_set_hdmi_infoframe(encoder, crtc_state);
> > + intel_hdmi_set_hdmi_infoframe(encoder, crtc_state, conn_state);
> > }
> >
> > static void cpt_set_infoframes(struct drm_encoder *encoder,
> > @@ -768,7 +770,7 @@ static void cpt_set_infoframes(struct drm_encoder *encoder,
> >
> > intel_hdmi_set_avi_infoframe(encoder, crtc_state);
> > intel_hdmi_set_spd_infoframe(encoder, crtc_state);
> > - intel_hdmi_set_hdmi_infoframe(encoder, crtc_state);
> > + intel_hdmi_set_hdmi_infoframe(encoder, crtc_state, conn_state);
> > }
> >
> > static void vlv_set_infoframes(struct drm_encoder *encoder,
> > @@ -821,7 +823,7 @@ static void vlv_set_infoframes(struct drm_encoder *encoder,
> >
> > intel_hdmi_set_avi_infoframe(encoder, crtc_state);
> > intel_hdmi_set_spd_infoframe(encoder, crtc_state);
> > - intel_hdmi_set_hdmi_infoframe(encoder, crtc_state);
> > + intel_hdmi_set_hdmi_infoframe(encoder, crtc_state, conn_state);
> > }
> >
> > static void hsw_set_infoframes(struct drm_encoder *encoder,
> > @@ -854,7 +856,7 @@ static void hsw_set_infoframes(struct drm_encoder *encoder,
> >
> > intel_hdmi_set_avi_infoframe(encoder, crtc_state);
> > intel_hdmi_set_spd_infoframe(encoder, crtc_state);
> > - intel_hdmi_set_hdmi_infoframe(encoder, crtc_state);
> > + intel_hdmi_set_hdmi_infoframe(encoder, crtc_state, conn_state);
> > }
> >
> > void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable)
> > diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> > index b78791061983..59a11026dceb 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> > @@ -1054,7 +1054,8 @@ static int mtk_hdmi_setup_vendor_specific_infoframe(struct mtk_hdmi *hdmi,
> > u8 buffer[10];
> > ssize_t err;
> >
> > - err = drm_hdmi_vendor_infoframe_from_display_mode(&frame, mode);
> > + err = drm_hdmi_vendor_infoframe_from_display_mode(&frame,
> > + &hdmi->conn, mode);
> > if (err) {
> > dev_err(hdmi->dev,
> > "Failed to get vendor infoframe from mode: %zd\n", err);
> > diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
> > index b26a506d20ca..9d7b2afd7cfc 100644
> > --- a/drivers/gpu/drm/nouveau/nv50_display.c
> > +++ b/drivers/gpu/drm/nouveau/nv50_display.c
> > @@ -2754,7 +2754,8 @@ nv50_hdmi_enable(struct drm_encoder *encoder, struct drm_display_mode *mode)
> > = hdmi_infoframe_pack(&avi_frame, args.infoframes, 17);
> > }
> >
> > - ret = drm_hdmi_vendor_infoframe_from_display_mode(&vendor_frame.vendor.hdmi, mode);
> > + ret = drm_hdmi_vendor_infoframe_from_display_mode(&vendor_frame.vendor.hdmi,
> > + &nv_connector->base, mode);
> > if (!ret) {
> > /* We have a Vendor InfoFrame, populate it to the display */
> > args.pwr.vendor_infoframe_length
> > diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
> > index ee584d87111f..fab30927a889 100644
> > --- a/drivers/gpu/drm/rockchip/inno_hdmi.c
> > +++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
> > @@ -282,6 +282,7 @@ static int inno_hdmi_config_video_vsi(struct inno_hdmi *hdmi,
> > int rc;
> >
> > rc = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
> > + &hdmi->connector,
> > mode);
> >
> > return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_VSI,
> > diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
> > index d1902750a85d..c3b292ab17a5 100644
> > --- a/drivers/gpu/drm/sti/sti_hdmi.c
> > +++ b/drivers/gpu/drm/sti/sti_hdmi.c
> > @@ -515,7 +515,9 @@ static int hdmi_vendor_infoframe_config(struct sti_hdmi *hdmi)
> >
> > DRM_DEBUG_DRIVER("\n");
> >
> > - ret = drm_hdmi_vendor_infoframe_from_display_mode(&infoframe, mode);
> > + ret = drm_hdmi_vendor_infoframe_from_display_mode(&infoframe,
> > + hdmi->drm_connector,
> > + mode);
> > if (ret < 0) {
> > /*
> > * Going into that statement does not means vendor infoframe
> > diff --git a/drivers/gpu/drm/zte/zx_hdmi.c b/drivers/gpu/drm/zte/zx_hdmi.c
> > index b8abb1b496ff..13ea90f7a185 100644
> > --- a/drivers/gpu/drm/zte/zx_hdmi.c
> > +++ b/drivers/gpu/drm/zte/zx_hdmi.c
> > @@ -108,6 +108,7 @@ static int zx_hdmi_config_video_vsi(struct zx_hdmi *hdmi,
> > int ret;
> >
> > ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
> > + &hdmi->connector,
> > mode);
> > if (ret) {
> > DRM_DEV_ERROR(hdmi->dev, "failed to get vendor infoframe: %d\n",
> > diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
> > index 2b97d1e28f60..1543212b0449 100644
> > --- a/include/drm/drm_connector.h
> > +++ b/include/drm/drm_connector.h
> > @@ -270,6 +270,11 @@ struct drm_display_info {
> > bool dvi_dual;
> >
> > /**
> > + * @has_hdmi_infoframe: Does the sink support the HDMI infoframe?
> > + */
> > + bool has_hdmi_infoframe;
> > +
> > + /**
> > * @edid_hdmi_dc_modes: Mask of supported hdmi deep color modes. Even
> > * more stuff redundant with @bus_formats.
> > */
> > diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
> > index 9e4e23524840..3c8740ad1db6 100644
> > --- a/include/drm/drm_edid.h
> > +++ b/include/drm/drm_edid.h
> > @@ -356,6 +356,7 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame,
> > bool is_hdmi2_sink);
> > int
> > drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
> > + struct drm_connector *connector,
> > const struct drm_display_mode *mode);
> > void
> > drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame,
> Otherwise looks good
> - Shashank
--
Ville Syrjälä
Intel OTC
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