[PATCH v6 3/8] drm/i915/lobf: Add fixed refresh rate check in compute_config()

[Hogander, Jouni]

On Thu, 2025-03-20 at 00:45 +0530, Animesh Manna wrote:
> LOBF can be enabled with vrr fixed rate mode, so add check
> if vmin = vmax = flipline in compute_config().
> 
> Signed-off-by: Animesh Manna <animesh.manna at intel.com>

Reviewed-by: Jouni Högander <jouni.hogander at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_alpm.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c
> b/drivers/gpu/drm/i915/display/intel_alpm.c
> index d2f133bc5f38..c2862888466f 100644
> --- a/drivers/gpu/drm/i915/display/intel_alpm.c
> +++ b/drivers/gpu/drm/i915/display/intel_alpm.c
> @@ -288,6 +288,10 @@ void intel_alpm_lobf_compute_config(struct
> intel_dp *intel_dp,
>  	if (crtc_state->has_psr)
>  		return;
>  
> +	if (crtc_state->vrr.vmin != crtc_state->vrr.vmax ||
> +	    crtc_state->vrr.vmin != crtc_state->vrr.flipline)
> +		return;
> +
>  	if (!(intel_alpm_aux_wake_supported(intel_dp) ||
>  	      intel_alpm_aux_less_wake_supported(intel_dp)))
>  		return;