Re: [PATCH v2 01/11] drm: Add HDMI 2.0 VIC support for AVI info-frames

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On Tue, May 30, 2017 at 05:43:40PM +0530, Shashank Sharma wrote:
> 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 the connector->display_info
> to check if the connected display is HDMI 2.0.
> 
> Cc: Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx>
> Cc: Jose Abreu <jose.abreu@xxxxxxxxxxxx>
> Cc: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
> Cc: Alex Deucher <alexander.deucher@xxxxxxx>
> Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> 
> 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
> 
> Reviewed-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
> Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxxxx>
> ---
>  drivers/gpu/drm/amd/amdgpu/dce_v10_0.c    |  2 +-
>  drivers/gpu/drm/amd/amdgpu/dce_v11_0.c    |  2 +-
>  drivers/gpu/drm/amd/amdgpu/dce_v8_0.c     |  2 +-
>  drivers/gpu/drm/bridge/analogix-anx78xx.c |  3 ++-
>  drivers/gpu/drm/bridge/sii902x.c          |  2 +-
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c |  2 +-
>  drivers/gpu/drm/drm_edid.c                | 12 +++++++++++-
>  drivers/gpu/drm/exynos/exynos_hdmi.c      |  2 +-
>  drivers/gpu/drm/i2c/tda998x_drv.c         |  2 +-
>  drivers/gpu/drm/i915/intel_hdmi.c         |  5 ++++-
>  drivers/gpu/drm/i915/intel_sdvo.c         |  3 ++-
>  drivers/gpu/drm/mediatek/mtk_hdmi.c       |  2 +-
>  drivers/gpu/drm/omapdrm/omap_encoder.c    |  3 ++-
>  drivers/gpu/drm/radeon/radeon_audio.c     |  2 +-
>  drivers/gpu/drm/rockchip/inno_hdmi.c      |  2 +-
>  drivers/gpu/drm/sti/sti_hdmi.c            |  2 +-
>  drivers/gpu/drm/tegra/hdmi.c              |  2 +-
>  drivers/gpu/drm/tegra/sor.c               |  2 +-
>  drivers/gpu/drm/vc4/vc4_hdmi.c            |  2 +-
>  drivers/gpu/drm/zte/zx_hdmi.c             |  2 +-
>  include/drm/drm_edid.h                    |  3 ++-
>  21 files changed, 38 insertions(+), 21 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
> index 3c62c45..4923ddc 100644
> --- a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
> @@ -1864,7 +1864,7 @@ static void dce_v10_0_afmt_setmode(struct drm_encoder *encoder,
>  	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;
> diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
> index c8ed0fa..4101684 100644
> --- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
> @@ -1848,7 +1848,7 @@ static void dce_v11_0_afmt_setmode(struct drm_encoder *encoder,
>  	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;
> diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
> index 3e90c19..a7f6b32 100644
> --- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
> @@ -1747,7 +1747,7 @@ static void dce_v8_0_afmt_setmode(struct drm_encoder *encoder,
>  	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;
> diff --git a/drivers/gpu/drm/bridge/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix-anx78xx.c
> index a2a8236..f9b77b8 100644
> --- a/drivers/gpu/drm/bridge/analogix-anx78xx.c
> +++ b/drivers/gpu/drm/bridge/analogix-anx78xx.c
> @@ -1097,7 +1097,8 @@ static void anx78xx_bridge_mode_set(struct drm_bridge *bridge,
>  
>  	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;
> diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
> index 9b87067..3dc40f6 100644
> --- a/drivers/gpu/drm/bridge/sii902x.c
> +++ b/drivers/gpu/drm/bridge/sii902x.c
> @@ -269,7 +269,7 @@ static void sii902x_bridge_mode_set(struct drm_bridge *bridge,
>  	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;
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index 8737de8..e6d3181 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -1317,7 +1317,7 @@ static void hdmi_config_AVI(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
>  	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;
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 2e55599..8b23435 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -4334,12 +4334,14 @@ EXPORT_SYMBOL(drm_set_preferred_mode);
>   *                                              data from a DRM display mode
>   * @frame: HDMI AVI infoframe
>   * @mode: DRM display mode
> + * @is_hdmi2: 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)
>  {
>  	int err;
>  
> @@ -4355,6 +4357,14 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame,
>  
>  	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 && frame->video_code > 64)
> +		frame->video_code = 0;

Seems I've totally forgotten what we concluded about the AVI VIC
vs. HDMI VIC, but I have a feeling this isn't sufficient.

> +
>  	frame->picture_aspect = HDMI_PICTURE_ASPECT_NONE;
>  
>  	/*
> diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
> index 1ff6ab6..f2cc75d 100644
> --- a/drivers/gpu/drm/exynos/exynos_hdmi.c
> +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
> @@ -784,7 +784,7 @@ static void hdmi_reg_infoframes(struct hdmi_context *hdata)
>  	}
>  
>  	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) {
> diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
> index 86f47e1..d1e7ac5 100644
> --- a/drivers/gpu/drm/i2c/tda998x_drv.c
> +++ b/drivers/gpu/drm/i2c/tda998x_drv.c
> @@ -712,7 +712,7 @@ tda998x_write_avi(struct tda998x_priv *priv, struct drm_display_mode *mode)
>  {
>  	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);
> diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
> index 58d6903..702cbab 100644
> --- a/drivers/gpu/drm/i915/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> @@ -459,11 +459,14 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
>  	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 = 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);
>  	if (ret < 0) {
>  		DRM_ERROR("couldn't fill AVI infoframe\n");
>  		return;
> diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
> index 6cc1812..62d727a 100644
> --- a/drivers/gpu/drm/i915/intel_sdvo.c
> +++ b/drivers/gpu/drm/i915/intel_sdvo.c
> @@ -1006,7 +1006,8 @@ static bool intel_sdvo_set_avi_infoframe(struct intel_sdvo *intel_sdvo,
>  	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;
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> index 41a1c03..a1770dc 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> @@ -975,7 +975,7 @@ static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi,
>  	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);
> diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c
> index 86c977b..624f5b5 100644
> --- a/drivers/gpu/drm/omapdrm/omap_encoder.c
> +++ b/drivers/gpu/drm/omapdrm/omap_encoder.c
> @@ -85,7 +85,8 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder,
>  	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);
>  	}
> diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c
> index aaacac1..770e31f 100644
> --- a/drivers/gpu/drm/radeon/radeon_audio.c
> +++ b/drivers/gpu/drm/radeon/radeon_audio.c
> @@ -516,7 +516,7 @@ static int radeon_audio_set_avi_packet(struct drm_encoder *encoder,
>  	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;
> diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
> index 7d9b75e..7149968 100644
> --- a/drivers/gpu/drm/rockchip/inno_hdmi.c
> +++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
> @@ -294,7 +294,7 @@ static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
>  	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;
> diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
> index a59c95a..dbc6a19 100644
> --- a/drivers/gpu/drm/sti/sti_hdmi.c
> +++ b/drivers/gpu/drm/sti/sti_hdmi.c
> @@ -434,7 +434,7 @@ static int hdmi_avi_infoframe_config(struct sti_hdmi *hdmi)
>  
>  	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;
> diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
> index cda0491..718d8db 100644
> --- a/drivers/gpu/drm/tegra/hdmi.c
> +++ b/drivers/gpu/drm/tegra/hdmi.c
> @@ -734,7 +734,7 @@ static void tegra_hdmi_setup_avi_infoframe(struct tegra_hdmi *hdmi,
>  	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;
> diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
> index a8f5289..fb2709c 100644
> --- a/drivers/gpu/drm/tegra/sor.c
> +++ b/drivers/gpu/drm/tegra/sor.c
> @@ -1904,7 +1904,7 @@ tegra_sor_hdmi_setup_avi_infoframe(struct tegra_sor *sor,
>  	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;
> diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
> index ed63d4e..406d6d8 100644
> --- a/drivers/gpu/drm/vc4/vc4_hdmi.c
> +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
> @@ -395,7 +395,7 @@ static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
>  	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;
> diff --git a/drivers/gpu/drm/zte/zx_hdmi.c b/drivers/gpu/drm/zte/zx_hdmi.c
> index 0df7366..7e834e3 100644
> --- a/drivers/gpu/drm/zte/zx_hdmi.c
> +++ b/drivers/gpu/drm/zte/zx_hdmi.c
> @@ -124,7 +124,7 @@ static int zx_hdmi_config_video_avi(struct zx_hdmi *hdmi,
>  	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);
> diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
> index 7b9f48b..c07eb81 100644
> --- a/include/drm/drm_edid.h
> +++ b/include/drm/drm_edid.h
> @@ -343,7 +343,8 @@ drm_load_edid_firmware(struct drm_connector *connector)
>  
>  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);
>  int
>  drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
>  					    const struct drm_display_mode *mode);
> -- 
> 2.7.4

-- 
Ville Syrjälä
Intel OTC
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