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drm/exynos: Remove dpms link between encoder/connector 

This patch removes the call from encoder dpms into connector dpms (which
will then call back into encoder dpms through the helper function). The
callback is likely to keep connector->dpms in the right state when
initiating dpms from crtc or encoder, but this isn't the right way to do
it. This patch is the first step towards rationalizing power management
in the exynos drm driver.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Sean Paul 2014-01-30 16:19:08 -05:00 committed by Inki Dae
parent 87244fa604
commit e5b89916bc
3 changed files with 8 additions and 88 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/gpu/drm/exynos/exynos_drm_connector.c
View File

@ -26,7 +26,6 @@ struct exynos_drm_connector {
struct drm_connector drm_connector;
uint32_t encoder_id;
struct exynos_drm_manager *manager;
uint32_t dpms;
};
static int exynos_drm_connector_get_modes(struct drm_connector *connector)
@ -119,7 +118,8 @@ static int exynos_drm_connector_mode_valid(struct drm_connector *connector,
return ret;
}
struct drm_encoder *exynos_drm_best_encoder(struct drm_connector *connector)
static struct drm_encoder *exynos_drm_best_encoder(
struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct exynos_drm_connector *exynos_connector =
@ -146,41 +146,6 @@ 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 = exynos_drm_best_encoder(connector);
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)
{
/*
* 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)
{
@ -236,7 +201,7 @@ static void exynos_drm_connector_destroy(struct drm_connector *connector)
}
static struct drm_connector_funcs exynos_connector_funcs = {
.dpms = exynos_drm_connector_dpms,
.dpms = drm_helper_connector_dpms,
.fill_modes = exynos_drm_connector_fill_modes,
.detect = exynos_drm_connector_detect,
.destroy = exynos_drm_connector_destroy,
@ -281,7 +246,6 @@ 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;

4
drivers/gpu/drm/exynos/exynos_drm_connector.h
View File

@ -17,8 +17,4 @@
struct drm_connector *exynos_drm_connector_create(struct drm_device *dev,
struct drm_encoder *encoder);
struct drm_encoder *exynos_drm_best_encoder(struct drm_connector *connector);
void exynos_drm_display_power(struct drm_connector *connector, int mode);
#endif

50
drivers/gpu/drm/exynos/exynos_drm_encoder.c
View File

@ -29,35 +29,19 @@
* @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;
bool updated;
};
static void exynos_drm_connector_power(struct drm_encoder *encoder, int mode)
{
struct drm_device *dev = encoder->dev;
struct drm_connector *connector;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
if (exynos_drm_best_encoder(connector) == encoder) {
DRM_DEBUG_KMS("connector[%d] dpms[%d]\n",
connector->base.id, mode);
exynos_drm_display_power(connector, mode);
}
}
}
static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
{
struct drm_device *dev = encoder->dev;
struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
struct exynos_drm_display_ops *display_ops = manager->display_ops;
DRM_DEBUG_KMS("encoder dpms: %d\n", mode);
@ -66,26 +50,10 @@ static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
return;
}
mutex_lock(&dev->struct_mutex);
if (display_ops && display_ops->power_on)
display_ops->power_on(manager->ctx, mode);
switch (mode) {
case DRM_MODE_DPMS_ON:
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_connector_power(encoder, mode);
exynos_encoder->dpms = mode;
exynos_encoder->updated = false;
break;
default:
DRM_ERROR("unspecified mode %d\n", mode);
break;
}
mutex_unlock(&dev->struct_mutex);
exynos_encoder->dpms = mode;
}
static bool
@ -190,14 +158,6 @@ static void exynos_drm_encoder_commit(struct drm_encoder *encoder)
if (manager_ops && manager_ops->commit)
manager_ops->commit(manager);
/*
* 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;
/*
* In case of setcrtc, there is no way to update encoder's dpms
* so update it here.