drm/exynos/hdmi: fix pipeline disable order
Hardware require that MIXER(crtc) should be disabled prior to
HDMI(encoder). It was achieved by disabling crtc from encoder disable
callback, bypassing drm core. As a result drm core tried to call vblank
related routines on disabled crtc. The patch fixes it by simplifying
hdmi_disable routine - now it only cancels hotplug worker. Hardware will
be disabled in proper moment during pipe clock disable.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 1ff6ab6..06bfbe4 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1486,8 +1486,6 @@ static void hdmi_enable(struct drm_encoder *encoder)
static void hdmi_disable(struct drm_encoder *encoder)
{
struct hdmi_context *hdata = encoder_to_hdmi(encoder);
- struct drm_crtc *crtc = encoder->crtc;
- const struct drm_crtc_helper_funcs *funcs = NULL;
if (!hdata->powered)
return;
@@ -1498,16 +1496,11 @@ static void hdmi_disable(struct drm_encoder *encoder)
* to disable TV Subsystem should be as following,
* VP -> Mixer -> HDMI
*
- * Below codes will try to disable Mixer and VP(if used)
- * prior to disabling HDMI.
+ * To achieve such sequence HDMI is disabled together with HDMI PHY, via
+ * pipe clock callback.
*/
- if (crtc)
- funcs = crtc->helper_private;
- if (funcs && funcs->disable)
- (*funcs->disable)(crtc);
-
- cec_notifier_set_phys_addr(hdata->notifier, CEC_PHYS_ADDR_INVALID);
cancel_delayed_work(&hdata->hotplug_work);
+ cec_notifier_set_phys_addr(hdata->notifier, CEC_PHYS_ADDR_INVALID);
hdmiphy_disable(hdata);
}