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drm/i915: Reuse ilk_needs_fb_cb_tune() for the reduced clock as well

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Use ilk_needs_fb_cb_tune() for reduced_clock instead of hand rolling
it. Also ilk_needs_fb_cb_tune() can just use the precomputed M value
instead of calculating it again.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210715093530.31711-11-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2021-07-15 12:35:27 +03:00
parent a338847abc
commit 7b43cd70b5
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/display/intel_dpll.c
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@ -954,7 +954,7 @@ static int hsw_crtc_compute_clock(struct intel_crtc_state *crtc_state)
static bool ilk_needs_fb_cb_tune(const struct dpll *dpll, int factor)
{
return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
return dpll->m < factor * dpll->n;
}
static void ilk_update_pll_dividers(struct intel_crtc_state *crtc_state,
@ -983,7 +983,7 @@ static void ilk_update_pll_dividers(struct intel_crtc_state *crtc_state,
fp |= FP_CB_TUNE;
fp2 = i9xx_dpll_compute_fp(reduced_clock);
if (reduced_clock->m < factor * reduced_clock->n)
if (ilk_needs_fb_cb_tune(reduced_clock, factor))
fp2 |= FP_CB_TUNE;
crtc_state->dpll_hw_state.fp0 = fp;