During DC validation, attempt to enable a separate DCN pipe for the
cursor if it's in overlay mode. If that fails, or if no overlay mode is
requested, then fallback to native mode.
Signed-off-by: Leo Li <sunpeng.li@xxxxxxx>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 309 +++++++++++++++---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 7 +
.../amd/display/amdgpu_dm/amdgpu_dm_crtc.c | 1 +
.../amd/display/amdgpu_dm/amdgpu_dm_plane.c | 13 +-
4 files changed, 288 insertions(+), 42 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 21a61454c878..09ab330aed17 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -8359,8 +8359,19 @@ static void amdgpu_dm_commit_planes(struct
drm_atomic_state *state,
* Disable the cursor first if we're disabling all the planes.
* It'll remain on the screen after the planes are re-enabled
* if we don't.
+ *
+ * If the cursor is transitioning from native to overlay mode, the
+ * native cursor needs to be disabled first.
*/
- if (acrtc_state->active_planes == 0)
+ if (acrtc_state->cursor_mode == DM_CURSOR_OVERLAY_MODE &&
+ dm_old_crtc_state->cursor_mode == DM_CURSOR_NATIVE_MODE) {
+ struct dc_cursor_position cursor_position = {0};
+ dc_stream_set_cursor_position(acrtc_state->stream,
+ &cursor_position);
+ }
+
+ if (acrtc_state->active_planes == 0 &&
+ dm_old_crtc_state->cursor_mode == DM_CURSOR_NATIVE_MODE)
amdgpu_dm_commit_cursors(state);
/* update planes when needed */
@@ -8374,7 +8385,8 @@ static void amdgpu_dm_commit_planes(struct
drm_atomic_state *state,
struct dm_plane_state *dm_new_plane_state =
to_dm_plane_state(new_plane_state);
/* Cursor plane is handled after stream updates */
- if (plane->type == DRM_PLANE_TYPE_CURSOR) {
+ if (plane->type == DRM_PLANE_TYPE_CURSOR &&
+ acrtc_state->cursor_mode == DM_CURSOR_NATIVE_MODE) {
if ((fb && crtc == pcrtc) ||
(old_plane_state->fb && old_plane_state->crtc == pcrtc))
cursor_update = true;
@@ -8727,7 +8739,8 @@ static void amdgpu_dm_commit_planes(struct
drm_atomic_state *state,
* This avoids redundant programming in the case where we're going
* to be disabling a single plane - those pipes are being disabled.
*/
- if (acrtc_state->active_planes)
+ if (acrtc_state->active_planes &&
+ acrtc_state->cursor_mode == DM_CURSOR_NATIVE_MODE)
amdgpu_dm_commit_cursors(state);
cleanup:
@@ -10039,7 +10052,8 @@ static bool should_reset_plane(struct
drm_atomic_state *state,
{
struct drm_plane *other;
struct drm_plane_state *old_other_state, *new_other_state;
- struct drm_crtc_state *new_crtc_state;
+ struct drm_crtc_state *old_crtc_state, *new_crtc_state;
+ struct dm_crtc_state *old_dm_crtc_state, *new_dm_crtc_state;
struct amdgpu_device *adev = drm_to_adev(plane->dev);
int i;
@@ -10061,10 +10075,24 @@ static bool should_reset_plane(struct
drm_atomic_state *state,
new_crtc_state =
drm_atomic_get_new_crtc_state(state, new_plane_state->crtc);
+ old_crtc_state =
+ drm_atomic_get_old_crtc_state(state, old_plane_state->crtc);
if (!new_crtc_state)
return true;
+ /*
+ * A change in cursor mode means a new dc pipe needs to be acquired or
+ * released from the state
+ */
+ old_dm_crtc_state = to_dm_crtc_state(old_crtc_state);
+ new_dm_crtc_state = to_dm_crtc_state(new_crtc_state);
+ if (plane->type == DRM_PLANE_TYPE_CURSOR &&
+ old_dm_crtc_state != NULL &&
+ old_dm_crtc_state->cursor_mode != new_dm_crtc_state->cursor_mode) {
+ return true;
+ }
+
/* CRTC Degamma changes currently require us to recreate planes. */
if (new_crtc_state->color_mgmt_changed)
return true;
@@ -10216,6 +10244,68 @@ static int dm_check_cursor_fb(struct amdgpu_crtc
*new_acrtc,
return 0;
}
+/*
+ * Helper function for checking the cursor in native mode
+ */
+static int dm_check_native_cursor_state(struct drm_crtc *new_plane_crtc,
+ struct drm_plane *plane,
+ struct drm_plane_state *new_plane_state,
+ bool enable)
+{
+
+ struct amdgpu_crtc *new_acrtc;
+ int ret;
+
+ if (!enable || !new_plane_crtc ||
+ drm_atomic_plane_disabling(plane->state, new_plane_state))
+ return 0;
+
+ new_acrtc = to_amdgpu_crtc(new_plane_crtc);
+
+ if (new_plane_state->src_x != 0 || new_plane_state->src_y != 0) {
+ DRM_DEBUG_ATOMIC("Cropping not supported for cursor plane\n");
+ return -EINVAL;
+ }
+
+ if (new_plane_state->fb) {
+ ret = dm_check_cursor_fb(new_acrtc, new_plane_state,
+ new_plane_state->fb);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static bool dm_should_update_native_cursor(struct drm_atomic_state *state,
+ struct drm_crtc *old_plane_crtc,
+ struct drm_crtc *new_plane_crtc,
+ bool enable)
+{
+ struct drm_crtc_state *old_crtc_state, *new_crtc_state;
+ struct dm_crtc_state *dm_old_crtc_state, *dm_new_crtc_state;
+
+ if (!enable) {
+ if (old_plane_crtc == NULL)
+ return true;
+
+ old_crtc_state = drm_atomic_get_old_crtc_state(
+ state, old_plane_crtc);
+ dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
+
+ return dm_old_crtc_state->cursor_mode == DM_CURSOR_NATIVE_MODE;
+ } else {
+ if (new_plane_crtc == NULL)
+ return true;
+
+ new_crtc_state = drm_atomic_get_new_crtc_state(
+ state, new_plane_crtc);
+ dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
+
+ return dm_new_crtc_state->cursor_mode == DM_CURSOR_NATIVE_MODE;
+ }
+}
+
static int dm_update_plane_state(struct dc *dc,
struct drm_atomic_state *state,
struct drm_plane *plane,
@@ -10231,8 +10321,7 @@ static int dm_update_plane_state(struct dc *dc,
struct drm_crtc_state *old_crtc_state, *new_crtc_state;
struct dm_crtc_state *dm_new_crtc_state, *dm_old_crtc_state;
struct dm_plane_state *dm_new_plane_state, *dm_old_plane_state;
- struct amdgpu_crtc *new_acrtc;
- bool needs_reset;
+ bool needs_reset, update_native_cursor;
int ret = 0;
@@ -10241,24 +10330,16 @@ static int dm_update_plane_state(struct dc *dc,
dm_new_plane_state = to_dm_plane_state(new_plane_state);
dm_old_plane_state = to_dm_plane_state(old_plane_state);
- if (plane->type == DRM_PLANE_TYPE_CURSOR) {
- if (!enable || !new_plane_crtc ||
- drm_atomic_plane_disabling(plane->state, new_plane_state))
- return 0;
-
- new_acrtc = to_amdgpu_crtc(new_plane_crtc);
-
- if (new_plane_state->src_x != 0 || new_plane_state->src_y != 0) {
- DRM_DEBUG_ATOMIC("Cropping not supported for cursor plane\n");
- return -EINVAL;
- }
+ update_native_cursor = dm_should_update_native_cursor(state,
+ old_plane_crtc,
+ new_plane_crtc,
+ enable);
- if (new_plane_state->fb) {
- ret = dm_check_cursor_fb(new_acrtc, new_plane_state,
- new_plane_state->fb);
- if (ret)
- return ret;
- }
+ if (plane->type == DRM_PLANE_TYPE_CURSOR && update_native_cursor) {
+ ret = dm_check_native_cursor_state(new_plane_crtc, plane,
+ new_plane_state, enable);
+ if (ret)
+ return ret;
return 0;
}
@@ -10285,16 +10366,17 @@ static int dm_update_plane_state(struct dc *dc,
plane->base.id, old_plane_crtc->base.id);
ret = dm_atomic_get_state(state, &dm_state);
- if (ret)
- return ret;
+ if (ret) {
+ goto out;
+ }
if (!dc_state_remove_plane(
dc,
dm_old_crtc_state->stream,
dm_old_plane_state->dc_state,
dm_state->context)) {
-
- return -EINVAL;
+ ret = -EINVAL;
+ goto out;
}
if (dm_old_plane_state->dc_state)
@@ -10323,21 +10405,16 @@ static int dm_update_plane_state(struct dc *dc,
return 0;
ret = amdgpu_dm_plane_helper_check_state(new_plane_state,
new_crtc_state);
- if (ret)
- return ret;
+ if (ret) {
+ goto out;
+ }
WARN_ON(dm_new_plane_state->dc_state);
dc_new_plane_state = dc_create_plane_state(dc);
- if (!dc_new_plane_state)
- return -ENOMEM;
-
- /* Block top most plane from being a video plane */
- if (plane->type == DRM_PLANE_TYPE_OVERLAY) {
- if
(amdgpu_dm_plane_is_video_format(new_plane_state->fb->format->format) &&
*is_top_most_overlay)
- return -EINVAL;
-
- *is_top_most_overlay = false;
+ if (!dc_new_plane_state) {
+ ret = -ENOMEM;
+ goto out;
}
DRM_DEBUG_ATOMIC("Enabling DRM plane: %d on DRM crtc %d\n",
@@ -10350,13 +10427,13 @@ static int dm_update_plane_state(struct dc *dc,
new_crtc_state);
if (ret) {
dc_plane_state_release(dc_new_plane_state);
- return ret;
+ goto out;
}
ret = dm_atomic_get_state(state, &dm_state);
if (ret) {
dc_plane_state_release(dc_new_plane_state);
- return ret;
+ goto out;
}
/*
@@ -10373,7 +10450,8 @@ static int dm_update_plane_state(struct dc *dc,
dm_state->context)) {
dc_plane_state_release(dc_new_plane_state);
- return -EINVAL;
+ ret = -EINVAL;
+ goto out;
}
dm_new_plane_state->dc_state = dc_new_plane_state;
@@ -10388,6 +10466,16 @@ static int dm_update_plane_state(struct dc *dc,
*lock_and_validation_needed = true;
}
+out:
+ /* If cursor overlay failed, attempt fallback to native mode */
+ if (ret == -EINVAL && plane->type == DRM_PLANE_TYPE_CURSOR) {
+ ret = dm_check_native_cursor_state(new_plane_crtc, plane,
+ new_plane_state, enable);
+ if (ret) {
+ return ret;
+ }
+ dm_new_crtc_state->cursor_mode = DM_CURSOR_NATIVE_MODE;
+ }
return ret;
}
@@ -10544,6 +10632,126 @@ static int add_affected_mst_dsc_crtcs(struct
drm_atomic_state *state, struct drm
return drm_dp_mst_add_affected_dsc_crtcs(state,
&aconnector->mst_root->mst_mgr);
}
+/**
+ * DOC: Cursor Modes - Native vs Overlay
+ *
+ * In native mode, the cursor uses a integrated cursor pipe within each DCN hw
+ * plane. It does not require a dedicated hw plane to enable, but it is
+ * subjected to the same z-order and scaling as the hw plane. It also has
format
+ * restrictions, a RGB cursor in native mode cannot be enabled within a non-RGB
+ * hw plane.
+ *
+ * In overlay mode, the cursor uses a separate DCN hw plane, and thus has its
+ * own scaling and z-pos. It also has no blending restrictions. It lends to a
+ * cursor behavior more akin to a DRM client's expectations. However, it does
+ * occupy an extra DCN plane, and therefore will only be used if a DCN plane is
+ * available.
+*/
+
+/**
+ * Set whether the cursor should be enabled in native mode, or overlay mode, on
+ * the dm_crtc_state.
+ *
+ * The cursor should be enabled in overlay mode if the immediate underlying
+ * plane contains a video format.
+ *
+ * Since zpos info is required, drm_atomic_normalize_zpos must be called before
+ * calling this function.
+*/
+static int dm_crtc_set_cursor_mode(struct drm_atomic_state *state,
+ struct dm_crtc_state *dm_crtc_state)
+{
+ struct drm_plane_state *plane_state, *old_plane_state, *target_plane_state;
+ struct drm_crtc_state *crtc_state = &dm_crtc_state->base;
+ struct drm_plane *plane;
+ bool consider_mode_change = false;
+ bool cursor_changed = false;
+ unsigned int target_zpos;
+ unsigned int cursor_zpos;
+ int i;
+
+ /*
+ * Cursor mode can change if a plane's format changes, is
+ * enabled/disabled, or z-order changes.
+ */
+ for_each_oldnew_plane_in_state(state, plane, old_plane_state,
plane_state, i) {
+
+ /* Only care about planes on this CRTC */
+ if ((drm_plane_mask(plane) & crtc_state->plane_mask) == 0)
+ continue;
+
+ if (plane->type == DRM_PLANE_TYPE_CURSOR)
+ cursor_changed = true;
+
+ if (drm_atomic_plane_enabling(old_plane_state, plane_state) ||
+ drm_atomic_plane_disabling(old_plane_state, plane_state) ||
+ old_plane_state->fb->format != plane_state->fb->format) {
+ consider_mode_change = true;
+ break;
+ }
+ }
+
+ if (!consider_mode_change && !crtc_state->zpos_changed) {
+ return 0;
+ }
+
+ /*
+ * If no cursor change on this CRTC, and not enabled on this CRTC, then
+ * no need to set cursor mode. This avoids needlessly locking the cursor
+ * state.
+ */
+ if (!cursor_changed &&
+ !(drm_plane_mask(crtc_state->crtc->cursor) & crtc_state->plane_mask)) {
+ return 0;
+ }
+
+ plane_state = drm_atomic_get_plane_state(state,
+ crtc_state->crtc->cursor);
+ if (IS_ERR(plane_state))
+ return PTR_ERR(plane_state);
+
+ /* Cursor is disabled */
+ if (!plane_state->fb)
+ return 0;
+
+ cursor_zpos = plane_state->normalized_zpos;
+
+ /* Get enabled plane immediately below cursor. */
+ target_plane_state = NULL;
+ target_zpos = 0;
+ drm_for_each_plane_mask(plane, state->dev, crtc_state->plane_mask) {
+ if (plane->type == DRM_PLANE_TYPE_CURSOR)
+ continue;
+
+ plane_state = drm_atomic_get_plane_state(state, plane);
+ if (IS_ERR(plane_state))
+ return PTR_ERR(plane_state);
+
+ if (!plane_state->fb ||
+ plane_state->normalized_zpos >= cursor_zpos)
+ continue;
+
+ if (plane_state->normalized_zpos >= target_zpos) {
+ target_zpos = plane_state->normalized_zpos;
+ target_plane_state = plane_state;
+ }
+ }
+
+ /* Nothing below cursor - use overlay mode */
+ if (target_plane_state == NULL) {
+ dm_crtc_state->cursor_mode = DM_CURSOR_OVERLAY_MODE;
+ return 0;
+ }
+
+ if
(amdgpu_dm_plane_is_video_format(target_plane_state->fb->format->format)) {
+ dm_crtc_state->cursor_mode = DM_CURSOR_OVERLAY_MODE;
+ } else {
+ dm_crtc_state->cursor_mode = DM_CURSOR_NATIVE_MODE;
+ }
+
+ return 0;
+}
+
/**
* amdgpu_dm_atomic_check() - Atomic check implementation for AMDgpu DM.
*
@@ -10713,6 +10921,20 @@ static int amdgpu_dm_atomic_check(struct drm_device
*dev,
goto fail;
}
+ /*
+ * Determine whether cursors on each CRTC should be enabled in native or
+ * overlay mode.
+ */
+ for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
+ dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
+
+ ret = dm_crtc_set_cursor_mode(state, dm_new_crtc_state);
+ if (ret) {
+ drm_dbg(dev, "Failed to determine cursor mode\n");
+ goto fail;
+ }
+ }
+
/* Remove exiting planes if they are modified */
for_each_oldnew_plane_in_state_reverse(state, plane, old_plane_state,
new_plane_state, i) {
if (old_plane_state->fb && new_plane_state->fb &&
@@ -10793,6 +11015,11 @@ static int amdgpu_dm_atomic_check(struct drm_device
*dev,
/* Check cursor planes scaling */
for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
+ /* Overlay cusor does not need scaling check */
+ dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
+ if (dm_new_crtc_state->cursor_mode == DM_CURSOR_OVERLAY_MODE)
+ continue;
+
ret = dm_check_crtc_cursor(state, crtc, new_crtc_state);
if (ret) {
DRM_DEBUG_DRIVER("dm_check_crtc_cursor() failed\n");
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index 09519b7abf67..b8d39fdd1e09 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -822,6 +822,11 @@ struct dm_plane_state {
enum amdgpu_transfer_function blend_tf;
};
+enum amdgpu_dm_cursor_mode {
+ DM_CURSOR_NATIVE_MODE = 0,
+ DM_CURSOR_OVERLAY_MODE,
+};
+
struct dm_crtc_state {
struct drm_crtc_state base;
struct dc_stream_state *stream;
@@ -852,6 +857,8 @@ struct dm_crtc_state {
* encoding.
*/
enum amdgpu_transfer_function regamma_tf;
+
+ enum amdgpu_dm_cursor_mode cursor_mode;
};
#define to_dm_crtc_state(x) container_of(x, struct dm_crtc_state, base)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
index e23a0a276e33..67aea1d2feb9 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
@@ -304,6 +304,7 @@ static struct drm_crtc_state
*amdgpu_dm_crtc_duplicate_state(struct drm_crtc *cr
state->regamma_tf = cur->regamma_tf;
state->crc_skip_count = cur->crc_skip_count;
state->mpo_requested = cur->mpo_requested;
+ state->cursor_mode = cur->cursor_mode;
/* TODO Duplicate dc_stream after objects are stream object is
flattened */
return &state->base;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
index 8a4c40b4c27e..ed1fc01f1649 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
@@ -104,7 +104,7 @@ void amdgpu_dm_plane_fill_blending_from_plane_state(const
struct drm_plane_state
*global_alpha = false;
*global_alpha_value = 0xff;
- if (plane_state->plane->type != DRM_PLANE_TYPE_OVERLAY)
+ if (plane_state->plane->type == DRM_PLANE_TYPE_PRIMARY)
return;
if (plane_state->pixel_blend_mode == DRM_MODE_BLEND_PREMULTI ||
@@ -1175,10 +1175,21 @@ static int amdgpu_dm_plane_atomic_check(struct
drm_plane *plane,
static int amdgpu_dm_plane_atomic_async_check(struct drm_plane *plane,
struct drm_atomic_state *state)
{
+ struct drm_crtc_state *new_crtc_state;
+ struct drm_plane_state *new_plane_state;
+ struct dm_crtc_state *dm_new_crtc_state;
+
/* Only support async updates on cursor planes. */
if (plane->type != DRM_PLANE_TYPE_CURSOR)
return -EINVAL;
+ new_plane_state = drm_atomic_get_new_plane_state(state, plane);
+ new_crtc_state = drm_atomic_get_new_crtc_state(state,
new_plane_state->crtc);
+ dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
+ /* Reject overlay cursors for now*/
+ if (dm_new_crtc_state->cursor_mode == DM_CURSOR_OVERLAY_MODE)
+ return -EINVAL;
+
return 0;
}
