Commit a790abab authored by Yannick Fertre's avatar Yannick Fertre Committed by Benjamin Gaignard
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drm/stm: ltdc: remove call of pm-runtime functions 



It is not necessary to suspend or stop the ltdc clocks
to modify the pixel clock.

Signed-off-by: default avatarYannick Fertre <yannick.fertre@st.com>
Acked-by: default avatarPhilippe Cornu <philippe.cornu@st.com>
Signed-off-by: default avatarBenjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200701120402.6444-1-yannick.fertre@st.com
parent 08fbd8a5

drivers/gpu/drm/stm/ltdc.c

+0 −16
Original line number Diff line number Diff line
@@ -503,15 +503,7 @@ static bool ltdc_crtc_mode_fixup(struct drm_crtc *crtc, 
				 struct drm_display_mode *adjusted_mode)

{

	struct ltdc_device *ldev = crtc_to_ltdc(crtc);

	struct drm_device *ddev = crtc->dev;

	int rate = mode->clock * 1000;

	bool runtime_active;

	int ret;



	runtime_active = pm_runtime_active(ddev->dev);



	if (runtime_active)

		pm_runtime_put_sync(ddev->dev);



	if (clk_set_rate(ldev->pixel_clk, rate) < 0) {

		DRM_ERROR("Cannot set rate (%dHz) for pixel clk\n", rate);
@@ -520,14 +512,6 @@ static bool ltdc_crtc_mode_fixup(struct drm_crtc *crtc, 


	adjusted_mode->clock = clk_get_rate(ldev->pixel_clk) / 1000;



	if (runtime_active) {

		ret = pm_runtime_get_sync(ddev->dev);

		if (ret) {

			DRM_ERROR("Failed to fixup mode, cannot get sync\n");

			return false;

		}

	}



	DRM_DEBUG_DRIVER("requested clock %dkHz, adjusted clock %dkHz\n",

			 mode->clock, adjusted_mode->clock);