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.ha...@samsung.com>
---
drivers/gpu/drm/exynos/exynos_hdmi.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c
b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 5243840..b61fe87 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1481,8 +1481,6 @@ 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;
@@ -1493,17 +1491,10 @@ 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);
-
cancel_delayed_work(&hdata->hotplug_work);
-
- hdmiphy_disable(hdata);
}
static const struct drm_encoder_helper_funcs exynos_hdmi_encoder_helper_funcs
= {
--
2.7.4
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