On Fri, Feb 18, 2022 at 08:40:38AM +0200, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrj...@linux.intel.com>
>
> Declutter intel_bw_atomic_check() a bit by pulling
> the max QGV mask calculation out.
>
> Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovs...@intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_bw.c | 35 ++++++++++++++++---------
> 1 file changed, 22 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_bw.c
> b/drivers/gpu/drm/i915/display/intel_bw.c
> index 1fd1d2182d8f..6637da75f878 100644
> --- a/drivers/gpu/drm/i915/display/intel_bw.c
> +++ b/drivers/gpu/drm/i915/display/intel_bw.c
> @@ -816,6 +816,26 @@ int intel_bw_calc_min_cdclk(struct intel_atomic_state
> *state)
> return 0;
> }
>
> +static u16 icl_qgv_points_mask(struct drm_i915_private *i915)
> +{
> + unsigned int num_psf_gv_points = i915->max_bw[0].num_psf_gv_points;
> + unsigned int num_qgv_points = i915->max_bw[0].num_qgv_points;
> + u16 mask = 0;
> +
> + /*
> + * We can _not_ use the whole ADLS_QGV_PT_MASK here, as PCode rejects
> + * it with failure if we try masking any unadvertised points.
> + * So need to operate only with those returned from PCode.
> + */
> + if (num_qgv_points > 0)
> + mask |= REG_GENMASK(num_qgv_points - 1, 0);
> +
> + if (num_psf_gv_points > 0)
> + mask |= REG_GENMASK(num_psf_gv_points - 1, 0) <<
> ADLS_PSF_PT_SHIFT;
> +
> + return mask;
> +}
> +
> int intel_bw_atomic_check(struct intel_atomic_state *state)
> {
> struct drm_i915_private *dev_priv = to_i915(state->base.dev);
> @@ -831,23 +851,11 @@ int intel_bw_atomic_check(struct intel_atomic_state
> *state)
> unsigned int num_qgv_points = dev_priv->max_bw[0].num_qgv_points;
> unsigned int num_psf_gv_points = dev_priv->max_bw[0].num_psf_gv_points;
> bool changed = false;
> - u32 mask = 0;
>
> /* FIXME earlier gens need some checks too */
> if (DISPLAY_VER(dev_priv) < 11)
> return 0;
>
> - /*
> - * We can _not_ use the whole ADLS_QGV_PT_MASK here, as PCode rejects
> - * it with failure if we try masking any unadvertised points.
> - * So need to operate only with those returned from PCode.
> - */
> - if (num_qgv_points > 0)
> - mask |= REG_GENMASK(num_qgv_points - 1, 0);
> -
> - if (num_psf_gv_points > 0)
> - mask |= REG_GENMASK(num_psf_gv_points - 1, 0) <<
> ADLS_PSF_PT_SHIFT;
> -
> for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
> new_crtc_state, i) {
> unsigned int old_data_rate =
> @@ -979,7 +987,8 @@ int intel_bw_atomic_check(struct intel_atomic_state
> *state)
> * We store the ones which need to be masked as that is what PCode
> * actually accepts as a parameter.
> */
> - new_bw_state->qgv_points_mask = ~allowed_points & mask;
> + new_bw_state->qgv_points_mask = ~allowed_points &
> + icl_qgv_points_mask(dev_priv);
>
> /*
> * If the actual mask had changed we need to make sure that
> --
> 2.34.1
>
