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drm/exynos: fixed duplicated mode setting. 

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@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This commit is contained in:
Inki Dae 2012-08-20 21:29:25 +09:00
parent 5d55393a85
commit 50caf25c58
4 changed files with 62 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
drivers/gpu/drm/exynos/exynos_drm_connector.c
View File

@ -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 */
@ -224,6 +225,43 @@ 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)
{
@ -283,7 +321,7 @@ 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,
@ -332,6 +370,7 @@ 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);

2
drivers/gpu/drm/exynos/exynos_drm_connector.h
View File

@ -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

3
drivers/gpu/drm/exynos/exynos_drm_crtc.c
View File

@ -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.

30
drivers/gpu/drm/exynos/exynos_drm_encoder.c
View File

@ -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)
@ -337,6 +332,19 @@ void exynos_drm_encoder_crtc_dpms(struct drm_encoder *encoder, void *data)
if (manager_ops && manager_ops->dpms)
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