When crtc_funcs->dpms callback is called, exynos_crtc->dpms
and exynos_encoder->dpms are changed to new mode. But if user
requests dpms mode operation, OFF -> ON, when crtc's dpms callback
is called, exynos_encoder->dpms is also changed to ON. This
makes encoder's dpms callback call be ignored so display power
couldn't become on again.
This patch removes exynos_encoder->dpms changing and adds 'updated'
variable to exynos_drm_encoder structure to avoid duplicated overlay
updating.
Signed-off-by: Inki Dae <inki.dae@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_drm_connector.c | 1 +
drivers/gpu/drm/exynos/exynos_drm_encoder.c | 33 +++++++++++++------------
2 files changed, 18 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_connector.c b/drivers/gpu/drm/exynos/exynos_drm_connector.c
index 18c2718..0f68a28 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_connector.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_connector.c
@@ -374,6 +374,7 @@ struct drm_connector *exynos_drm_connector_create(struct drm_device *dev,
exynos_connector->encoder_id = encoder->base.id;
exynos_connector->manager = manager;
exynos_connector->dpms = DRM_MODE_DPMS_OFF;
+ connector->dpms = DRM_MODE_DPMS_OFF;
connector->encoder = encoder;
err = drm_mode_connector_attach_encoder(connector, encoder);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.c b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
index e51503f..241ad1e 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_encoder.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
@@ -43,12 +43,14 @@
* @manager: specific encoder has its own manager to control a hardware
* appropriately and we can access a hardware drawing on this manager.
* @dpms: store the encoder dpms value.
+ * @updated: indicate whether overlay data updating is needed or not.
*/
struct exynos_drm_encoder {
struct drm_crtc *old_crtc;
struct drm_encoder drm_encoder;
struct exynos_drm_manager *manager;
- int dpms;
+ int dpms;
+ bool updated;
};
static void exynos_drm_connector_power(struct drm_encoder *encoder, int mode)
@@ -85,7 +87,9 @@ static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
switch (mode) {
case DRM_MODE_DPMS_ON:
if (manager_ops && manager_ops->apply)
- manager_ops->apply(manager->dev);
+ if (!exynos_encoder->updated)
+ manager_ops->apply(manager->dev);
+
exynos_drm_connector_power(encoder, mode);
exynos_encoder->dpms = mode;
break;
@@ -94,6 +98,7 @@ static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
case DRM_MODE_DPMS_OFF:
exynos_drm_connector_power(encoder, mode);
exynos_encoder->dpms = mode;
+ exynos_encoder->updated = false;
break;
default:
DRM_ERROR("unspecified mode %d\n", mode);
@@ -205,13 +210,22 @@ static void exynos_drm_encoder_prepare(struct drm_encoder *encoder)
static void exynos_drm_encoder_commit(struct drm_encoder *encoder)
{
- struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
+ struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
+ struct exynos_drm_manager *manager = exynos_encoder->manager;
struct exynos_drm_manager_ops *manager_ops = manager->ops;
DRM_DEBUG_KMS("%s\n", __FILE__);
if (manager_ops && manager_ops->commit)
manager_ops->commit(manager->dev);
+
+ /*
+ * this will avoid one issue that overlay data is updated to
+ * real hardware two times.
+ * And this variable will be used to check if the data was
+ * already updated or not by exynos_drm_encoder_dpms function.
+ */
+ exynos_encoder->updated = true;
}
static void exynos_drm_encoder_disable(struct drm_encoder *encoder)
@@ -401,19 +415,6 @@ void exynos_drm_encoder_crtc_dpms(struct drm_encoder *encoder, void *data)
manager_ops->dpms(manager->dev, mode);
/*
- * set current mode to new one so that data aren't updated into
- * registers by drm_helper_connector_dpms two times.
- *
- * in case that drm_crtc_helper_set_mode() is called,
- * overlay_ops->commit() and manager_ops->commit() callbacks
- * can be called two times, first at drm_crtc_helper_set_mode()
- * and second at drm_helper_connector_dpms().
- * so with this setting, when drm_helper_connector_dpms() is called
- * encoder->funcs->dpms() will be ignored.
- */
- exynos_encoder->dpms = mode;
-
- /*
* if this condition is ok then it means that the crtc is already
* detached from encoder and last function for detaching is properly
* done, so clear pipe from manager to prevent repeated call.
--
1.7.4.1
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