Merge tag 'topic/core-stuff-2014-11-28' of git://anongit.freedesktop.org/drm-intel into drm-next
So here's a pile of atomic fixes and improvements from various people.
There's still more patches in-flight, so I think I'll keep collecting them
in a separate branch.
* tag 'topic/core-stuff-2014-11-28' of git://anongit.freedesktop.org/drm-intel:
drm/atomic: clear plane's CRTC and FB when shutting down
drm: Handle atomic state properly in kms getfoo ioctl
drm: use mode_object_find helpers
drm: fix indentation
drm/msm: switch to atomic-helpers iterator macros
drm/atomic: add plane iterator macros
drm/atomic: track bitmask of planes attached to crtc
drm: Free atomic state during cleanup
drm: Make drm_atomic.h standalone includible
drm: Make drm_atomic_helper.h standalone includible
drm/plane: Add missing kerneldoc
drm/plane: Pass old state to ->atomic_update()
drm/atomic_helper: Cope with plane->crtc == NULL in disable helper
drm/atomic: Drop per-plane locking TODO
drm/atomic-helper: Skip vblank waits for unchanged fbs
drm: Document that drm_dev_alloc doesn't need a parent
diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
index 8c54f9a..3789f2d 100644
--- a/Documentation/DocBook/drm.tmpl
+++ b/Documentation/DocBook/drm.tmpl
@@ -2343,6 +2343,7 @@
<title>Atomic State Reset and Initialization</title>
!Pdrivers/gpu/drm/drm_atomic_helper.c atomic state reset and initialization
</sect3>
+!Iinclude/drm/drm_atomic_helper.h
!Edrivers/gpu/drm/drm_atomic_helper.c
</sect2>
<sect2>
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index d3b4674..ff5f034 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -243,12 +243,6 @@
if (state->plane_states[index])
return state->plane_states[index];
- /*
- * TODO: We currently don't have per-plane mutexes. So instead of trying
- * crazy tricks with deferring plane->crtc and hoping for the best just
- * grab all crtc locks. Once we have per-plane locks we must update this
- * to only take the plane mutex.
- */
ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx);
if (ret)
return ERR_PTR(ret);
@@ -350,7 +344,8 @@
/**
* drm_atomic_set_crtc_for_plane - set crtc for plane
- * @plane_state: atomic state object for the plane
+ * @state: the incoming atomic state
+ * @plane: the plane whose incoming state to update
* @crtc: crtc to use for the plane
*
* Changing the assigned crtc for a plane requires us to grab the lock and state
@@ -363,20 +358,35 @@
* sequence must be restarted. All other errors are fatal.
*/
int
-drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
- struct drm_crtc *crtc)
+drm_atomic_set_crtc_for_plane(struct drm_atomic_state *state,
+ struct drm_plane *plane, struct drm_crtc *crtc)
{
+ struct drm_plane_state *plane_state =
+ drm_atomic_get_plane_state(state, plane);
struct drm_crtc_state *crtc_state;
+ if (WARN_ON(IS_ERR(plane_state)))
+ return PTR_ERR(plane_state);
+
+ if (plane_state->crtc) {
+ crtc_state = drm_atomic_get_crtc_state(plane_state->state,
+ plane_state->crtc);
+ if (WARN_ON(IS_ERR(crtc_state)))
+ return PTR_ERR(crtc_state);
+
+ crtc_state->plane_mask &= ~(1 << drm_plane_index(plane));
+ }
+
+ plane_state->crtc = crtc;
+
if (crtc) {
crtc_state = drm_atomic_get_crtc_state(plane_state->state,
crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
+ crtc_state->plane_mask |= (1 << drm_plane_index(plane));
}
- plane_state->crtc = crtc;
-
if (crtc)
DRM_DEBUG_KMS("Link plane state %p to [CRTC:%d]\n",
plane_state, crtc->base.id);
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index a17b8e9..4a78a77 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -751,6 +751,33 @@
}
}
+static bool framebuffer_changed(struct drm_device *dev,
+ struct drm_atomic_state *old_state,
+ struct drm_crtc *crtc)
+{
+ struct drm_plane *plane;
+ struct drm_plane_state *old_plane_state;
+ int nplanes = old_state->dev->mode_config.num_total_plane;
+ int i;
+
+ for (i = 0; i < nplanes; i++) {
+ plane = old_state->planes[i];
+ old_plane_state = old_state->plane_states[i];
+
+ if (!plane)
+ continue;
+
+ if (plane->state->crtc != crtc &&
+ old_plane_state->crtc != crtc)
+ continue;
+
+ if (plane->state->fb != old_plane_state->fb)
+ return true;
+ }
+
+ return false;
+}
+
/**
* drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs
* @dev: DRM device
@@ -758,7 +785,9 @@
*
* Helper to, after atomic commit, wait for vblanks on all effected
* crtcs (ie. before cleaning up old framebuffers using
- * drm_atomic_helper_cleanup_planes())
+ * drm_atomic_helper_cleanup_planes()). It will only wait on crtcs where the
+ * framebuffers have actually changed to optimize for the legacy cursor and
+ * plane update use-case.
*/
void
drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
@@ -784,6 +813,9 @@
if (!crtc->state->enable)
continue;
+ if (!framebuffer_changed(dev, old_state, crtc))
+ continue;
+
ret = drm_crtc_vblank_get(crtc);
if (ret != 0)
continue;
@@ -1014,6 +1046,7 @@
for (i = 0; i < nplanes; i++) {
struct drm_plane_helper_funcs *funcs;
struct drm_plane *plane = old_state->planes[i];
+ struct drm_plane_state *old_plane_state;
if (!plane)
continue;
@@ -1023,7 +1056,9 @@
if (!funcs || !funcs->atomic_update)
continue;
- funcs->atomic_update(plane);
+ old_plane_state = old_state->plane_states[i];
+
+ funcs->atomic_update(plane, old_plane_state);
}
for (i = 0; i < ncrtcs; i++) {
@@ -1187,7 +1222,7 @@
goto fail;
}
- ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
+ ret = drm_atomic_set_crtc_for_plane(state, plane, crtc);
if (ret != 0)
goto fail;
drm_atomic_set_fb_for_plane(plane_state, fb);
@@ -1243,6 +1278,17 @@
struct drm_plane_state *plane_state;
int ret = 0;
+ /*
+ * FIXME: Without plane->crtc set we can't get at the implicit legacy
+ * acquire context. The real fix will be to wire the acquire ctx through
+ * everywhere we need it, but meanwhile prevent chaos by just skipping
+ * this noop. The critical case is the cursor ioctls which a) only grab
+ * crtc/cursor-plane locks (so we need the crtc to get at the right
+ * acquire context) and b) can try to disable the plane multiple times.
+ */
+ if (!plane->crtc)
+ return 0;
+
state = drm_atomic_state_alloc(plane->dev);
if (!state)
return -ENOMEM;
@@ -1255,7 +1301,7 @@
goto fail;
}
- ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
+ ret = drm_atomic_set_crtc_for_plane(state, plane, NULL);
if (ret != 0)
goto fail;
drm_atomic_set_fb_for_plane(plane_state, NULL);
@@ -1406,11 +1452,24 @@
goto fail;
}
+ primary_state = drm_atomic_get_plane_state(state, crtc->primary);
+ if (IS_ERR(primary_state)) {
+ ret = PTR_ERR(primary_state);
+ goto fail;
+ }
+
if (!set->mode) {
WARN_ON(set->fb);
WARN_ON(set->num_connectors);
crtc_state->enable = false;
+
+ ret = drm_atomic_set_crtc_for_plane(state, crtc->primary, NULL);
+ if (ret != 0)
+ goto fail;
+
+ drm_atomic_set_fb_for_plane(primary_state, NULL);
+
goto commit;
}
@@ -1420,13 +1479,7 @@
crtc_state->enable = true;
drm_mode_copy(&crtc_state->mode, set->mode);
- primary_state = drm_atomic_get_plane_state(state, crtc->primary);
- if (IS_ERR(primary_state)) {
- ret = PTR_ERR(primary_state);
- goto fail;
- }
-
- ret = drm_atomic_set_crtc_for_plane(primary_state, crtc);
+ ret = drm_atomic_set_crtc_for_plane(state, crtc->primary, crtc);
if (ret != 0)
goto fail;
drm_atomic_set_fb_for_plane(primary_state, set->fb);
@@ -1698,7 +1751,7 @@
goto fail;
}
- ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
+ ret = drm_atomic_set_crtc_for_plane(state, plane, crtc);
if (ret != 0)
goto fail;
drm_atomic_set_fb_for_plane(plane_state, fb);
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 589a921..de79283 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -721,6 +721,10 @@
drm_mode_object_put(dev, &crtc->base);
list_del(&crtc->head);
dev->mode_config.num_crtc--;
+
+ WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
+ if (crtc->state && crtc->funcs->atomic_destroy_state)
+ crtc->funcs->atomic_destroy_state(crtc, crtc->state);
}
EXPORT_SYMBOL(drm_crtc_cleanup);
@@ -918,6 +922,11 @@
connector->name = NULL;
list_del(&connector->head);
dev->mode_config.num_connector--;
+
+ WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
+ if (connector->state && connector->funcs->atomic_destroy_state)
+ connector->funcs->atomic_destroy_state(connector,
+ connector->state);
}
EXPORT_SYMBOL(drm_connector_cleanup);
@@ -1244,6 +1253,10 @@
if (plane->type == DRM_PLANE_TYPE_OVERLAY)
dev->mode_config.num_overlay_plane--;
drm_modeset_unlock_all(dev);
+
+ WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
+ if (plane->state && plane->funcs->atomic_destroy_state)
+ plane->funcs->atomic_destroy_state(plane, plane->state);
}
EXPORT_SYMBOL(drm_plane_cleanup);
@@ -1955,6 +1968,15 @@
return true;
}
+static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
+{
+ /* For atomic drivers only state objects are synchronously updated and
+ * protected by modeset locks, so check those first. */
+ if (connector->state)
+ return connector->state->best_encoder;
+ return connector->encoder;
+}
+
/**
* drm_mode_getconnector - get connector configuration
* @dev: drm device for the ioctl
@@ -1973,6 +1995,7 @@
{
struct drm_mode_get_connector *out_resp = data;
struct drm_connector *connector;
+ struct drm_encoder *encoder;
struct drm_display_mode *mode;
int mode_count = 0;
int props_count = 0;
@@ -2028,8 +2051,10 @@
out_resp->subpixel = connector->display_info.subpixel_order;
out_resp->connection = connector->status;
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
- if (connector->encoder)
- out_resp->encoder_id = connector->encoder->base.id;
+
+ encoder = drm_connector_get_encoder(connector);
+ if (encoder)
+ out_resp->encoder_id = encoder->base.id;
else
out_resp->encoder_id = 0;
drm_modeset_unlock(&dev->mode_config.connection_mutex);
@@ -2099,6 +2124,33 @@
return ret;
}
+static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
+{
+ struct drm_connector *connector;
+ struct drm_device *dev = encoder->dev;
+ bool uses_atomic = false;
+
+ /* For atomic drivers only state objects are synchronously updated and
+ * protected by modeset locks, so check those first. */
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ if (!connector->state)
+ continue;
+
+ uses_atomic = true;
+
+ if (connector->state->best_encoder != encoder)
+ continue;
+
+ return connector->state->crtc;
+ }
+
+ /* Don't return stale data (e.g. pending async disable). */
+ if (uses_atomic)
+ return NULL;
+
+ return encoder->crtc;
+}
+
/**
* drm_mode_getencoder - get encoder configuration
* @dev: drm device for the ioctl
@@ -2117,6 +2169,7 @@
{
struct drm_mode_get_encoder *enc_resp = data;
struct drm_encoder *encoder;
+ struct drm_crtc *crtc;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
@@ -2126,7 +2179,10 @@
return -ENOENT;
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
- if (encoder->crtc)
+ crtc = drm_encoder_get_crtc(encoder);
+ if (crtc)
+ enc_resp->crtc_id = crtc->base.id;
+ else if (encoder->crtc)
enc_resp->crtc_id = encoder->crtc->base.id;
else
enc_resp->crtc_id = 0;
@@ -2392,7 +2448,6 @@
struct drm_file *file_priv)
{
struct drm_mode_set_plane *plane_req = data;
- struct drm_mode_object *obj;
struct drm_plane *plane;
struct drm_crtc *crtc = NULL;
struct drm_framebuffer *fb = NULL;
@@ -2415,14 +2470,12 @@
* First, find the plane, crtc, and fb objects. If not available,
* we don't bother to call the driver.
*/
- obj = drm_mode_object_find(dev, plane_req->plane_id,
- DRM_MODE_OBJECT_PLANE);
- if (!obj) {
+ plane = drm_plane_find(dev, plane_req->plane_id);
+ if (!plane) {
DRM_DEBUG_KMS("Unknown plane ID %d\n",
plane_req->plane_id);
return -ENOENT;
}
- plane = obj_to_plane(obj);
if (plane_req->fb_id) {
fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
@@ -2432,14 +2485,12 @@
return -ENOENT;
}
- obj = drm_mode_object_find(dev, plane_req->crtc_id,
- DRM_MODE_OBJECT_CRTC);
- if (!obj) {
+ crtc = drm_crtc_find(dev, plane_req->crtc_id);
+ if (!crtc) {
DRM_DEBUG_KMS("Unknown crtc ID %d\n",
plane_req->crtc_id);
return -ENOENT;
}
- crtc = obj_to_crtc(obj);
}
/*
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 2e5c7d9..4f41377 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -535,6 +535,8 @@
* The initial ref-count of the object is 1. Use drm_dev_ref() and
* drm_dev_unref() to take and drop further ref-counts.
*
+ * Note that for purely virtual devices @parent can be NULL.
+ *
* RETURNS:
* Pointer to new DRM device, or NULL if out of memory.
*/
diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
index 93c6533..18a1ac6 100644
--- a/drivers/gpu/drm/drm_plane_helper.c
+++ b/drivers/gpu/drm/drm_plane_helper.c
@@ -443,7 +443,7 @@
crtc_funcs[i]->atomic_begin(crtc[i]);
}
- plane_funcs->atomic_update(plane);
+ plane_funcs->atomic_update(plane, plane_state);
for (i = 0; i < 2; i++) {
if (crtc_funcs[i] && crtc_funcs[i]->atomic_flush)
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
index 6781aa9..a7672e1 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
@@ -84,7 +84,7 @@
struct drm_plane *plane;
uint32_t flush = 0;
- for_each_plane_on_crtc(crtc, plane) {
+ drm_atomic_crtc_for_each_plane(plane, crtc) {
enum mdp4_pipe pipe_id = mdp4_plane_pipe(plane);
flush |= pipe2flush(pipe_id);
}
@@ -197,7 +197,7 @@
struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
struct drm_plane *plane;
- for_each_plane_on_crtc(crtc, plane) {
+ drm_atomic_crtc_for_each_plane(plane, crtc) {
enum mdp4_pipe pipe_id = mdp4_plane_pipe(plane);
int idx = idxs[pipe_id];
mixer_cfg = mixercfg(mixer_cfg, mdp4_crtc->mixer,
@@ -221,7 +221,7 @@
mdp4_write(mdp4_kms, REG_MDP4_OVLP_TRANSP_HIGH0(ovlp), 0);
mdp4_write(mdp4_kms, REG_MDP4_OVLP_TRANSP_HIGH1(ovlp), 0);
- for_each_plane_on_crtc(crtc, plane) {
+ drm_atomic_crtc_for_each_plane(plane, crtc) {
enum mdp4_pipe pipe_id = mdp4_plane_pipe(plane);
int idx = idxs[pipe_id];
if (idx > 0) {
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c
index 76d0a40..1e5ebe8 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c
@@ -107,7 +107,8 @@
return 0;
}
-static void mdp4_plane_atomic_update(struct drm_plane *plane)
+static void mdp4_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
{
struct drm_plane_state *state = plane->state;
int ret;
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
index 0598bde..0e9a2e3 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
@@ -91,7 +91,7 @@
if (!mdp5_crtc->ctl)
return;
- for_each_plane_on_crtc(crtc, plane) {
+ drm_atomic_crtc_for_each_plane(plane, crtc) {
flush_mask |= mdp5_plane_get_flush(plane);
}
flush_mask |= mdp5_ctl_get_flush(mdp5_crtc->ctl);
@@ -124,8 +124,9 @@
}
spin_unlock_irqrestore(&dev->event_lock, flags);
- for_each_plane_on_crtc(crtc, plane)
+ drm_atomic_crtc_for_each_plane(plane, crtc) {
mdp5_plane_complete_flip(plane);
+ }
}
static void mdp5_crtc_destroy(struct drm_crtc *crtc)
@@ -195,7 +196,7 @@
if (!mdp5_crtc->ctl)
goto out;
- for_each_plane_on_crtc(crtc, plane) {
+ drm_atomic_crtc_for_each_plane(plane, crtc) {
enum mdp_mixer_stage_id stage =
to_mdp5_plane_state(plane->state)->stage;
@@ -317,7 +318,7 @@
/* verify that there are not too many planes attached to crtc
* and that we don't have conflicting mixer stages:
*/
- for_each_pending_plane_on_crtc(state->state, crtc, plane) {
+ drm_atomic_crtc_state_for_each_plane(plane, state) {
struct drm_plane_state *pstate;
if (cnt >= ARRAY_SIZE(pstates)) {
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
index 533df7c..26e5fde 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
@@ -213,7 +213,8 @@
return 0;
}
-static void mdp5_plane_atomic_update(struct drm_plane *plane)
+static void mdp5_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
{
struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
struct drm_plane_state *state = plane->state;
diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h
index 7fb4876..0643774 100644
--- a/drivers/gpu/drm/msm/msm_kms.h
+++ b/drivers/gpu/drm/msm/msm_kms.h
@@ -65,27 +65,4 @@
struct msm_kms *mdp4_kms_init(struct drm_device *dev);
struct msm_kms *mdp5_kms_init(struct drm_device *dev);
-/* TODO move these helper iterator macro somewhere common: */
-#define for_each_plane_on_crtc(_crtc, _plane) \
- list_for_each_entry((_plane), &(_crtc)->dev->mode_config.plane_list, head) \
- if ((_plane)->state->crtc == (_crtc))
-
-static inline bool
-__plane_will_be_attached_to_crtc(struct drm_atomic_state *state,
- struct drm_plane *plane, struct drm_crtc *crtc)
-{
- int idx = drm_plane_index(plane);
-
- /* if plane is modified in incoming state, use the new state: */
- if (state->plane_states[idx])
- return state->plane_states[idx]->crtc == crtc;
-
- /* otherwise, current state: */
- return plane->state->crtc == crtc;
-}
-
-#define for_each_pending_plane_on_crtc(_state, _crtc, _plane) \
- list_for_each_entry((_plane), &(_crtc)->dev->mode_config.plane_list, head) \
- if (__plane_will_be_attached_to_crtc((_state), (_plane), (_crtc)))
-
#endif /* __MSM_KMS_H__ */
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index be776fb..8ba35c6 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -809,7 +809,7 @@
struct drm_local_map *agp_buffer_map;
unsigned int agp_buffer_token;
- struct drm_mode_config mode_config; /**< Current mode config */
+ struct drm_mode_config mode_config; /**< Current mode config */
/** \name GEM information */
/*@{ */
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 9d91916..ad22295 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -28,6 +28,8 @@
#ifndef DRM_ATOMIC_H_
#define DRM_ATOMIC_H_
+#include <drm/drm_crtc.h>
+
struct drm_atomic_state * __must_check
drm_atomic_state_alloc(struct drm_device *dev);
void drm_atomic_state_clear(struct drm_atomic_state *state);
@@ -44,8 +46,8 @@
struct drm_connector *connector);
int __must_check
-drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
- struct drm_crtc *crtc);
+drm_atomic_set_crtc_for_plane(struct drm_atomic_state *state,
+ struct drm_plane *plane, struct drm_crtc *crtc);
void drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
struct drm_framebuffer *fb);
int __must_check
diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
index 64b4e91..f956b41 100644
--- a/include/drm/drm_atomic_helper.h
+++ b/include/drm/drm_atomic_helper.h
@@ -28,6 +28,8 @@
#ifndef DRM_ATOMIC_HELPER_H_
#define DRM_ATOMIC_HELPER_H_
+#include <drm/drm_crtc.h>
+
int drm_atomic_helper_check(struct drm_device *dev,
struct drm_atomic_state *state);
int drm_atomic_helper_commit(struct drm_device *dev,
@@ -96,5 +98,29 @@
void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
struct drm_connector_state *state);
+/**
+ * drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC
+ * @plane: the loop cursor
+ * @crtc: the crtc whose planes are iterated
+ *
+ * This iterates over the current state, useful (for example) when applying
+ * atomic state after it has been checked and swapped. To iterate over the
+ * planes which *will* be attached (for ->atomic_check()) see
+ * drm_crtc_for_each_pending_plane()
+ */
+#define drm_atomic_crtc_for_each_plane(plane, crtc) \
+ drm_for_each_plane_mask(plane, (crtc)->dev, (crtc)->state->plane_mask)
+
+/**
+ * drm_crtc_atomic_state_for_each_plane - iterate over attached planes in new state
+ * @plane: the loop cursor
+ * @crtc_state: the incoming crtc-state
+ *
+ * Similar to drm_crtc_for_each_plane(), but iterates the planes that will be
+ * attached if the specified state is applied. Useful during (for example)
+ * ->atomic_check() operations, to validate the incoming state
+ */
+#define drm_atomic_crtc_state_for_each_plane(plane, crtc_state) \
+ drm_for_each_plane_mask(plane, (crtc_state)->state->dev, (crtc_state)->plane_mask)
#endif /* DRM_ATOMIC_HELPER_H_ */
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index b459e8f..dd2c16e 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -231,6 +231,7 @@
* struct drm_crtc_state - mutable CRTC state
* @enable: whether the CRTC should be enabled, gates all other state
* @mode_changed: for use by helpers and drivers when computing state updates
+ * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes
* @last_vblank_count: for helpers and drivers to capture the vblank of the
* update to ensure framebuffer cleanup isn't done too early
* @planes_changed: for use by helpers and drivers when computing state updates
@@ -247,6 +248,13 @@
bool planes_changed : 1;
bool mode_changed : 1;
+ /* attached planes bitmask:
+ * WARNING: transitional helpers do not maintain plane_mask so
+ * drivers not converted over to atomic helpers should not rely
+ * on plane_mask being accurate!
+ */
+ u32 plane_mask;
+
/* last_vblank_count: for vblank waits before cleanup */
u32 last_vblank_count;
@@ -438,7 +446,7 @@
* @state: backpointer to global drm_atomic_state
*/
struct drm_connector_state {
- struct drm_crtc *crtc;
+ struct drm_crtc *crtc; /* do not write directly, use drm_atomic_set_crtc_for_connector() */
struct drm_encoder *best_encoder;
@@ -673,8 +681,8 @@
* @state: backpointer to global drm_atomic_state
*/
struct drm_plane_state {
- struct drm_crtc *crtc;
- struct drm_framebuffer *fb;
+ struct drm_crtc *crtc; /* do not write directly, use drm_atomic_set_crtc_for_plane() */
+ struct drm_framebuffer *fb; /* do not write directly, use drm_atomic_set_fb_for_plane() */
struct fence *fence;
/* Signed dest location allows it to be partially off screen */
@@ -1054,6 +1062,19 @@
uint32_t cursor_width, cursor_height;
};
+/**
+ * drm_for_each_plane_mask - iterate over planes specified by bitmask
+ * @plane: the loop cursor
+ * @dev: the DRM device
+ * @plane_mask: bitmask of plane indices
+ *
+ * Iterate over all planes specified by bitmask.
+ */
+#define drm_for_each_plane_mask(plane, dev, plane_mask) \
+ list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \
+ if ((plane_mask) & (1 << drm_plane_index(plane)))
+
+
#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
#define obj_to_connector(x) container_of(x, struct drm_connector, base)
#define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
diff --git a/include/drm/drm_plane_helper.h b/include/drm/drm_plane_helper.h
index c48f14d..a185392 100644
--- a/include/drm/drm_plane_helper.h
+++ b/include/drm/drm_plane_helper.h
@@ -49,6 +49,10 @@
/**
* drm_plane_helper_funcs - helper operations for CRTCs
+ * @prepare_fb: prepare a framebuffer for use by the plane
+ * @cleanup_fb: cleanup a framebuffer when it's no longer used by the plane
+ * @atomic_check: check that a given atomic state is valid and can be applied
+ * @atomic_update: apply an atomic state to the plane
*
* The helper operations are called by the mid-layer CRTC helper.
*/
@@ -60,7 +64,8 @@
int (*atomic_check)(struct drm_plane *plane,
struct drm_plane_state *state);
- void (*atomic_update)(struct drm_plane *plane);
+ void (*atomic_update)(struct drm_plane *plane,
+ struct drm_plane_state *old_state);
};
static inline void drm_plane_helper_add(struct drm_plane *plane,