[PATCH 05/10] drm/exynos: fixed duplicated mode setting.
Inki Dae
inki.dae at samsung.com
Mon Aug 20 05:35:50 PDT 2012
this patch fixes that when drm_crtc_helper_set_mode() is called,
mode data for hardware overlay and conntroller are updated two times.
for example, 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().
Signed-off-by: Inki Dae <inki.dae at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
drivers/gpu/drm/exynos/exynos_drm_connector.c | 41 ++++++++++++++++++++++++-
drivers/gpu/drm/exynos/exynos_drm_connector.h | 2 +
drivers/gpu/drm/exynos/exynos_drm_crtc.c | 3 +-
drivers/gpu/drm/exynos/exynos_drm_encoder.c | 30 +++++++++++-------
4 files changed, 62 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_connector.c b/drivers/gpu/drm/exynos/exynos_drm_connector.c
index d956819..1fadc22 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_connector.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_connector.c
@@ -40,6 +40,7 @@ struct exynos_drm_connector {
struct drm_connector drm_connector;
uint32_t encoder_id;
struct exynos_drm_manager *manager;
+ uint32_t dpms;
};
/* convert exynos_video_timings to drm_display_mode */
@@ -226,6 +227,43 @@ static struct drm_connector_helper_funcs exynos_connector_helper_funcs = {
.best_encoder = exynos_drm_best_encoder,
};
+void exynos_drm_display_power(struct drm_connector *connector, int mode)
+{
+ struct drm_encoder *encoder = connector->encoder;
+ struct exynos_drm_connector *exynos_connector;
+ struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
+ struct exynos_drm_display_ops *display_ops = manager->display_ops;
+
+ exynos_connector = to_exynos_connector(connector);
+
+ if (exynos_connector->dpms == mode) {
+ DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
+ return;
+ }
+
+ if (display_ops && display_ops->power_on)
+ display_ops->power_on(manager->dev, mode);
+
+ exynos_connector->dpms = mode;
+}
+
+static void exynos_drm_connector_dpms(struct drm_connector *connector,
+ int mode)
+{
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ /*
+ * in case that drm_crtc_helper_set_mode() is called,
+ * encoder/crtc->funcs->dpms() will be just returned
+ * because they already were DRM_MODE_DPMS_ON so only
+ * exynos_drm_display_power() will be called.
+ */
+ drm_helper_connector_dpms(connector, mode);
+
+ exynos_drm_display_power(connector, mode);
+
+}
+
static int exynos_drm_connector_fill_modes(struct drm_connector *connector,
unsigned int max_width, unsigned int max_height)
{
@@ -285,7 +323,7 @@ static void exynos_drm_connector_destroy(struct drm_connector *connector)
}
static struct drm_connector_funcs exynos_connector_funcs = {
- .dpms = drm_helper_connector_dpms,
+ .dpms = exynos_drm_connector_dpms,
.fill_modes = exynos_drm_connector_fill_modes,
.detect = exynos_drm_connector_detect,
.destroy = exynos_drm_connector_destroy,
@@ -334,6 +372,7 @@ 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->encoder = encoder;
err = drm_mode_connector_attach_encoder(connector, encoder);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_connector.h b/drivers/gpu/drm/exynos/exynos_drm_connector.h
index 1c7b2b5..40a55c2 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_connector.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_connector.h
@@ -31,4 +31,6 @@
struct drm_connector *exynos_drm_connector_create(struct drm_device *dev,
struct drm_encoder *encoder);
+void exynos_drm_display_power(struct drm_connector *connector, int mode);
+
#endif
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index abb1e2f..b612bf5 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -97,6 +97,7 @@ static void exynos_drm_crtc_commit(struct drm_crtc *crtc)
DRM_DEBUG_KMS("%s\n", __FILE__);
+ exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
exynos_plane_commit(exynos_crtc->plane);
exynos_plane_dpms(exynos_crtc->plane, DRM_MODE_DPMS_ON);
}
@@ -126,8 +127,6 @@ exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
DRM_DEBUG_KMS("%s\n", __FILE__);
- exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
-
/*
* copy the mode data adjusted by mode_fixup() into crtc->mode
* so that hardware can be seet to proper mode.
diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.c b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
index 2c037cd..08ba62f 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_encoder.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
@@ -31,6 +31,7 @@
#include "exynos_drm_drv.h"
#include "exynos_drm_encoder.h"
+#include "exynos_drm_connector.h"
#define to_exynos_encoder(x) container_of(x, struct exynos_drm_encoder,\
drm_encoder)
@@ -49,21 +50,17 @@ struct exynos_drm_encoder {
int dpms;
};
-static void exynos_drm_display_power(struct drm_encoder *encoder, int mode)
+static void exynos_drm_connector_power(struct drm_encoder *encoder, int mode)
{
struct drm_device *dev = encoder->dev;
struct drm_connector *connector;
- struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
if (connector->encoder == encoder) {
- struct exynos_drm_display_ops *display_ops =
- manager->display_ops;
-
DRM_DEBUG_KMS("connector[%d] dpms[%d]\n",
connector->base.id, mode);
- if (display_ops && display_ops->power_on)
- display_ops->power_on(manager->dev, mode);
+
+ exynos_drm_display_power(connector, mode);
}
}
}
@@ -88,13 +85,13 @@ static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
case DRM_MODE_DPMS_ON:
if (manager_ops && manager_ops->apply)
manager_ops->apply(manager->dev);
- exynos_drm_display_power(encoder, mode);
+ exynos_drm_connector_power(encoder, mode);
exynos_encoder->dpms = mode;
break;
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
case DRM_MODE_DPMS_OFF:
- exynos_drm_display_power(encoder, mode);
+ exynos_drm_connector_power(encoder, mode);
exynos_encoder->dpms = mode;
break;
default:
@@ -138,8 +135,6 @@ static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder,
DRM_DEBUG_KMS("%s\n", __FILE__);
- exynos_drm_encoder_dpms(encoder, DRM_MODE_DPMS_ON);
-
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
if (connector->encoder == encoder)
if (manager_ops && manager_ops->mode_set)
@@ -338,6 +333,19 @@ 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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