[Intel-gfx] [PATCH v10 04/11] drm/i915/dp: Allow big joiner modes in intel_dp_mode_valid(), v3.

[Ville Syrjälä]

On Thu, Oct 08, 2020 at 02:45:28PM -0700, Manasi Navare wrote:
> From: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> 
> Small changes to intel_dp_mode_valid(), allow listing modes that
> can only be supported in the bigjoiner configuration, which is
> not supported yet.
> 
> eDP does not support bigjoiner, so do not expose bigjoiner only
> modes on the eDP port.
> 
> v7:
> * Add can_bigjoiner() helper (Ville)
> * Pass bigjoiner to plane_size validation (Ville)
> v6:
> * Rebase after dp_downstream mode valid changes (Manasi)
> v5:
> * Increase max plane width to support 8K with bigjoiner (Maarten)
> v4:
> * Rebase (Manasi)
> 
> Changes since v1:
> - Disallow bigjoiner on eDP.
> Changes since v2:
> - Rename intel_dp_downstream_max_dotclock to intel_dp_max_dotclock,
>   and split off the downstream and source checking to its own function.
>   (Ville)
> v3:
> * Rebase (Manasi)
> 
> Signed-off-by: Manasi Navare <manasi.d.navare at intel.com>
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_display.c |   5 +-
>  drivers/gpu/drm/i915/display/intel_display.h |   3 +-
>  drivers/gpu/drm/i915/display/intel_dp.c      | 126 +++++++++++++++----
>  drivers/gpu/drm/i915/display/intel_dp_mst.c  |   2 +-
>  drivers/gpu/drm/i915/display/intel_dsi.c     |   2 +-
>  drivers/gpu/drm/i915/display/intel_hdmi.c    |   2 +-
>  6 files changed, 111 insertions(+), 29 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 723766b1eae3..cc540c7b7dcd 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -17642,7 +17642,8 @@ intel_mode_valid(struct drm_device *dev,
>  
>  enum drm_mode_status
>  intel_mode_valid_max_plane_size(struct drm_i915_private *dev_priv,
> -				const struct drm_display_mode *mode)
> +				const struct drm_display_mode *mode,
> +				bool bigjoiner)
>  {
>  	int plane_width_max, plane_height_max;
>  
> @@ -17659,7 +17660,7 @@ intel_mode_valid_max_plane_size(struct drm_i915_private *dev_priv,
>  	 * too big for that.
>  	 */
>  	if (INTEL_GEN(dev_priv) >= 11) {
> -		plane_width_max = 5120;
> +		plane_width_max = 5120 << bigjoiner;
>  		plane_height_max = 4320;
>  	} else {
>  		plane_width_max = 5120;
> diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
> index d10b7c8cde3f..3d860a9da8fe 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.h
> +++ b/drivers/gpu/drm/i915/display/intel_display.h
> @@ -496,7 +496,8 @@ u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
>  bool intel_plane_can_remap(const struct intel_plane_state *plane_state);
>  enum drm_mode_status
>  intel_mode_valid_max_plane_size(struct drm_i915_private *dev_priv,
> -				const struct drm_display_mode *mode);
> +				const struct drm_display_mode *mode,
> +				bool bigjoiner);
>  enum phy intel_port_to_phy(struct drm_i915_private *i915, enum port port);
>  bool is_trans_port_sync_mode(const struct intel_crtc_state *state);
>  
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 8a522edd7386..af2ff425e5d5 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -247,6 +247,29 @@ intel_dp_max_data_rate(int max_link_clock, int max_lanes)
>  	return max_link_clock * max_lanes;
>  }
>  
> +static int source_max_dotclock(struct intel_dp *intel_dp, bool allow_bigjoiner)
> +{
> +	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
> +	struct intel_encoder *encoder = &intel_dig_port->base;
> +	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> +
> +	if (allow_bigjoiner && INTEL_GEN(dev_priv) >= 11 && !intel_dp_is_edp(intel_dp))

Wasn't this supposed to be s/edp/port==A/ ?

> +		return 2 * dev_priv->max_dotclk_freq;
> +
> +	return dev_priv->max_dotclk_freq;
> +}
-- 
Ville Syrjälä
Intel