[Intel-gfx] [PATCH] drm/i915/mtl: Copy c10 phy pll sw state from master to slave for bigjoiner

[Ville Syrjälä]

On Fri, Apr 21, 2023 at 11:35:20AM +0300, Stanislav Lisovskiy wrote:
> We try to verify pll registers in sw state for slave crtc with the hw state.
> However in case of bigjoiner we don't calculate those at all, so this verification
> will then always fail.
> So we should either skip the verification for Bigjoiner slave crtc or copy sw state
> from master crtc.
> 
> Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_display.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index bf391a6cd8d6..83c98791fea3 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -4556,6 +4556,7 @@ copy_bigjoiner_crtc_state_modeset(struct intel_atomic_state *state,
>  	drm_mode_copy(&slave_crtc_state->hw.adjusted_mode,
>  		      &master_crtc_state->hw.adjusted_mode);
>  	slave_crtc_state->hw.scaling_filter = master_crtc_state->hw.scaling_filter;
> +	slave_crtc_state->cx0pll_state = master_crtc_state->cx0pll_state;

Wrong place. Also we're already copying dpll_hw_state which is in the
same union, and on first blush looks bigger than this thing. So why is
that not working?

>  
>  	copy_bigjoiner_crtc_state_nomodeset(state, slave_crtc);
>  
> -- 
> 2.37.3

-- 
Ville Syrjälä
Intel