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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: Yannick Fertre <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200701120402.6444-1-yannick.fertre@st.com
This commit is contained in:
Yannick Fertre 2020-07-01 14:04:02 +02:00 committed by Benjamin Gaignard
parent 08fbd8a5fb
commit a790ababbe
1 changed files with 0 additions and 16 deletions
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16
drivers/gpu/drm/stm/ltdc.c
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@ -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);