Commit 7b43cd70 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

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



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: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210715093530.31711-11-ville.syrjala@linux.intel.com


Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
parent a338847a

drivers/gpu/drm/i915/display/intel_dpll.c

+2 −2
Original line number Diff line number Diff line
@@ -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;