drm: Make drm_encoder_helper_funcs optional
Make drm_encoder_helper_funcs and it's functions optional to avoid
having dummy functions.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1462454674-2246-3-git-send-email-noralf@tronnes.org
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 997fd21..027b227 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -696,6 +696,8 @@
continue;
funcs = encoder->helper_private;
+ if (!funcs)
+ continue;
DRM_DEBUG_ATOMIC("disabling [ENCODER:%d:%s]\n",
encoder->base.id, encoder->name);
@@ -711,7 +713,7 @@
funcs->prepare(encoder);
else if (funcs->disable)
funcs->disable(encoder);
- else
+ else if (funcs->dpms)
funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
drm_bridge_post_disable(encoder->bridge);
@@ -859,6 +861,9 @@
encoder = connector->state->best_encoder;
funcs = encoder->helper_private;
+ if (!funcs)
+ continue;
+
new_crtc_state = connector->state->crtc->state;
mode = &new_crtc_state->mode;
adjusted_mode = &new_crtc_state->adjusted_mode;
@@ -964,6 +969,8 @@
encoder = connector->state->best_encoder;
funcs = encoder->helper_private;
+ if (!funcs)
+ continue;
DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n",
encoder->base.id, encoder->name);
@@ -976,7 +983,7 @@
if (funcs->enable)
funcs->enable(encoder);
- else
+ else if (funcs->commit)
funcs->commit(encoder);
drm_bridge_enable(encoder->bridge);
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index f47a252..a6e4243 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -170,11 +170,14 @@
{
const struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
+ if (!encoder_funcs)
+ return;
+
drm_bridge_disable(encoder->bridge);
if (encoder_funcs->disable)
(*encoder_funcs->disable)(encoder);
- else
+ else if (encoder_funcs->dpms)
(*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
drm_bridge_post_disable(encoder->bridge);
@@ -248,6 +251,9 @@
drm_for_each_encoder(encoder, dev) {
encoder_funcs = encoder->helper_private;
+ if (!encoder_funcs)
+ continue;
+
/* Disable unused encoders */
if (encoder->crtc == NULL)
drm_encoder_disable(encoder);
@@ -326,6 +332,10 @@
if (encoder->crtc != crtc)
continue;
+ encoder_funcs = encoder->helper_private;
+ if (!encoder_funcs)
+ continue;
+
ret = drm_bridge_mode_fixup(encoder->bridge,
mode, adjusted_mode);
if (!ret) {
@@ -360,11 +370,15 @@
if (encoder->crtc != crtc)
continue;
+ encoder_funcs = encoder->helper_private;
+ if (!encoder_funcs)
+ continue;
+
drm_bridge_disable(encoder->bridge);
- encoder_funcs = encoder->helper_private;
/* Disable the encoders as the first thing we do. */
- encoder_funcs->prepare(encoder);
+ if (encoder_funcs->prepare)
+ encoder_funcs->prepare(encoder);
drm_bridge_post_disable(encoder->bridge);
}
@@ -385,11 +399,15 @@
if (encoder->crtc != crtc)
continue;
+ encoder_funcs = encoder->helper_private;
+ if (!encoder_funcs)
+ continue;
+
DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n",
encoder->base.id, encoder->name,
mode->base.id, mode->name);
- encoder_funcs = encoder->helper_private;
- encoder_funcs->mode_set(encoder, mode, adjusted_mode);
+ if (encoder_funcs->mode_set)
+ encoder_funcs->mode_set(encoder, mode, adjusted_mode);
drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode);
}
@@ -402,10 +420,14 @@
if (encoder->crtc != crtc)
continue;
+ encoder_funcs = encoder->helper_private;
+ if (!encoder_funcs)
+ continue;
+
drm_bridge_pre_enable(encoder->bridge);
- encoder_funcs = encoder->helper_private;
- encoder_funcs->commit(encoder);
+ if (encoder_funcs->commit)
+ encoder_funcs->commit(encoder);
drm_bridge_enable(encoder->bridge);
}
@@ -790,12 +812,15 @@
struct drm_bridge *bridge = encoder->bridge;
const struct drm_encoder_helper_funcs *encoder_funcs;
+ encoder_funcs = encoder->helper_private;
+ if (!encoder_funcs)
+ return;
+
if (mode == DRM_MODE_DPMS_ON)
drm_bridge_pre_enable(bridge);
else
drm_bridge_disable(bridge);
- encoder_funcs = encoder->helper_private;
if (encoder_funcs->dpms)
encoder_funcs->dpms(encoder, mode);
