Re: [PATCH 3/4] drm/i915: Properly flag modesets for all bigjoiner pipes

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On Tue, Nov 24, 2020 at 10:11:55PM +0200, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> 
> If either of the bigjoiner pipes needs a modeset then we need
> a modeset on both pipes. Make it so.
> 
> v2: Split out the kill_bigjoiner_slave() change (Manasi)
>     Add affected connectors/planes
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Reviewed-by: Manasi Navare <manasi.d.navare@xxxxxxxxx>

Manasi

> ---
>  drivers/gpu/drm/i915/display/intel_display.c | 32 ++++++++++++++++++--
>  1 file changed, 29 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index fa6ca6191480..04dad3baf8a0 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -15525,20 +15525,36 @@ static int intel_atomic_check_async(struct intel_atomic_state *state)
>  
>  static int intel_bigjoiner_add_affected_crtcs(struct intel_atomic_state *state)
>  {
> -	const struct intel_crtc_state *crtc_state;
> +	struct intel_crtc_state *crtc_state;
>  	struct intel_crtc *crtc;
>  	int i;
>  
>  	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
>  		struct intel_crtc_state *linked_crtc_state;
> +		struct intel_crtc *linked_crtc;
> +		int ret;
>  
>  		if (!crtc_state->bigjoiner)
>  			continue;
>  
> -		linked_crtc_state = intel_atomic_get_crtc_state(&state->base,
> -								crtc_state->bigjoiner_linked_crtc);
> +		linked_crtc = crtc_state->bigjoiner_linked_crtc;
> +		linked_crtc_state = intel_atomic_get_crtc_state(&state->base, linked_crtc);
>  		if (IS_ERR(linked_crtc_state))
>  			return PTR_ERR(linked_crtc_state);
> +
> +		if (!needs_modeset(crtc_state))
> +			continue;
> +
> +		linked_crtc_state->uapi.mode_changed = true;
> +
> +		ret = drm_atomic_add_affected_connectors(&state->base,
> +							 &linked_crtc->base);
> +		if (ret)
> +			return ret;
> +
> +		ret = intel_atomic_add_affected_planes(state, linked_crtc);
> +		if (ret)
> +			return ret;
>  	}
>  
>  	return 0;
> @@ -15658,6 +15674,16 @@ static int intel_atomic_check(struct drm_device *dev,
>  				new_crtc_state->update_pipe = false;
>  			}
>  		}
> +
> +		if (new_crtc_state->bigjoiner) {
> +			struct intel_crtc_state *linked_crtc_state =
> +				intel_atomic_get_new_crtc_state(state, new_crtc_state->bigjoiner_linked_crtc);
> +
> +			if (needs_modeset(linked_crtc_state)) {
> +				new_crtc_state->uapi.mode_changed = true;
> +				new_crtc_state->update_pipe = false;
> +			}
> +		}
>  	}
>  
>  	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
> -- 
> 2.26.2
> 
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