[Intel-gfx] [PATCH] drm/i915/gen11: Link nv12 Y and UV planes in the atomic state, v5.
Maarten Lankhorst
maarten.lankhorst at linux.intel.com
Mon Oct 22 13:51:52 UTC 2018
To make NV12 working on icl, we need to update 2 planes simultaneously.
I've chosen to do this in the CRTC step after plane validation is done,
so we know what planes are (in)visible. The linked Y plane will get
updated in intel_plane_update_planes_on_crtc(), by the call to
update_slave, which gets the master's plane_state as argument.
The link requires both planes for atomic_update to work,
so make sure skl_ddb_add_affected_planes() adds both states.
Changes since v1:
- Introduce icl_is_nv12_y_plane(), instead of hardcoding sprite numbers.
- Put all the state updating login in intel_plane_atomic_check_with_state().
- Clean up changes in intel_plane_atomic_check().
Changes since v2:
- Fix intel_atomic_get_old_plane_state() to actually return old state.
- Move visibility changes to preparation patch.
- Only try to find a Y plane on gen11, earlier platforms only require
a single plane.
Changes since v3:
- Fix checkpatch warning about to_intel_crtc() usage.
- Add affected planes from icl_add_linked_planes() before check_planes(),
it's a cleaner way to do this. (Ville)
Changes since v4:
- Clear plane links in icl_check_nv12_planes() for clarity.
- Only pass crtc_state to icl_check_nv12_planes().
- Use for_each_new_intel_plane_in_state() in icl_check_nv12_planes.
- Rename aux to linked. (Ville)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
drivers/gpu/drm/i915/intel_atomic_plane.c | 19 +++++
drivers/gpu/drm/i915/intel_display.c | 95 +++++++++++++++++++++++
drivers/gpu/drm/i915/intel_drv.h | 53 +++++++++++++
drivers/gpu/drm/i915/intel_pm.c | 12 ++-
4 files changed, 178 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index b957ad63cd87..7d3685075201 100644
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -188,6 +188,25 @@ void intel_update_planes_on_crtc(struct intel_atomic_state *old_state,
trace_intel_update_plane(&plane->base, crtc);
plane->update_plane(plane, new_crtc_state, new_plane_state);
+ } else if (new_plane_state->slave) {
+ struct intel_plane *master =
+ new_plane_state->linked_plane;
+
+ /*
+ * We update the slave plane from this function because
+ * programming it from the master plane's update_plane
+ * callback runs into issues when the Y plane is
+ * reassigned, disabled or used by a different plane.
+ *
+ * The slave plane is updated with the master plane's
+ * plane_state.
+ */
+ new_plane_state =
+ intel_atomic_get_new_plane_state(old_state, master);
+
+ trace_intel_update_plane(&plane->base, crtc);
+
+ plane->update_slave(plane, new_crtc_state, new_plane_state);
} else {
trace_intel_disable_plane(&plane->base, crtc);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 68c9aeeee05c..680895982e4f 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10723,6 +10723,95 @@ static bool check_single_encoder_cloning(struct drm_atomic_state *state,
return true;
}
+static int icl_add_linked_planes(struct intel_atomic_state *state)
+{
+ struct intel_plane *plane, *linked;
+ struct intel_plane_state *plane_state, *linked_plane_state;
+ int i;
+
+ for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+ linked = plane_state->linked_plane;
+
+ if (!linked)
+ continue;
+
+ linked_plane_state = intel_atomic_get_plane_state(state, linked);
+ if (IS_ERR(linked_plane_state))
+ return PTR_ERR(linked_plane_state);
+ }
+
+ return 0;
+}
+
+static int icl_check_nv12_planes(struct intel_crtc_state *crtc_state)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+ struct intel_atomic_state *state = to_intel_atomic_state(crtc_state->base.state);
+ struct intel_plane *plane, *linked;
+ struct intel_plane_state *plane_state;
+ int i;
+
+ if (INTEL_GEN(dev_priv) < 11)
+ return 0;
+
+ /*
+ * Destroy all old plane links and make the slave plane invisible
+ * in the crtc_state->active_planes mask.
+ */
+ for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+ if (plane->pipe != crtc->pipe || !plane_state->linked_plane)
+ continue;
+
+ plane_state->linked_plane = NULL;
+ if (plane_state->slave && !plane_state->base.visible)
+ crtc_state->active_planes &= ~BIT(plane->id);
+
+ plane_state->slave = false;
+ }
+
+ if (!crtc_state->nv12_planes)
+ return 0;
+
+ for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+ struct intel_plane_state *linked_state = NULL;
+
+ if (plane->pipe != crtc->pipe ||
+ !(crtc_state->nv12_planes & BIT(plane->id)))
+ continue;
+
+ for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, linked) {
+ if (!icl_is_nv12_y_plane(linked->id))
+ continue;
+
+ if (crtc_state->active_planes & BIT(linked->id))
+ continue;
+
+ linked_state = intel_atomic_get_plane_state(state, linked);
+ if (IS_ERR(linked_state))
+ return PTR_ERR(linked_state);
+
+ break;
+ }
+
+ if (!linked_state) {
+ DRM_DEBUG_KMS("Need %d free Y planes for NV12\n",
+ hweight8(crtc_state->nv12_planes));
+
+ return -EINVAL;
+ }
+
+ plane_state->linked_plane = linked;
+
+ linked_state->slave = true;
+ linked_state->linked_plane = plane;
+ crtc_state->active_planes |= BIT(linked->id);
+ DRM_DEBUG_KMS("Using %s as Y plane for %s\n", linked->base.name, plane->base.name);
+ }
+
+ return 0;
+}
+
static int intel_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_crtc_state *crtc_state)
{
@@ -10794,6 +10883,8 @@ static int intel_crtc_atomic_check(struct drm_crtc *crtc,
if (mode_changed)
ret = skl_update_scaler_crtc(pipe_config);
+ if (!ret)
+ ret = icl_check_nv12_planes(pipe_config);
if (!ret)
ret = skl_check_pipe_max_pixel_rate(intel_crtc,
pipe_config);
@@ -12460,6 +12551,10 @@ static int intel_atomic_check(struct drm_device *dev,
intel_state->cdclk.logical = dev_priv->cdclk.logical;
}
+ ret = icl_add_linked_planes(intel_state);
+ if (ret)
+ return ret;
+
ret = drm_atomic_helper_check_planes(dev, state);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 0e9a926fca04..59b35293a5f6 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -539,6 +539,26 @@ struct intel_plane_state {
*/
int scaler_id;
+ /*
+ * linked_plane:
+ *
+ * ICL planar formats require 2 planes that are updated as pairs.
+ * This member is used to make sure the other plane is also updated
+ * when required, and for update_slave() to find the correct
+ * plane_state to pass as argument.
+ */
+ struct intel_plane *linked_plane;
+
+ /*
+ * slave:
+ * If set don't update use the linked plane's state for updating
+ * this plane during atomic commit with the update_slave() callback.
+ *
+ * It's also used by the watermark code to ignore wm calculations on
+ * this plane. They're calculated by the linked plane's wm code.
+ */
+ bool slave;
+
struct drm_intel_sprite_colorkey ckey;
};
@@ -983,6 +1003,9 @@ struct intel_plane {
void (*update_plane)(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state);
+ void (*update_slave)(struct intel_plane *plane,
+ const struct intel_crtc_state *crtc_state,
+ const struct intel_plane_state *plane_state);
void (*disable_plane)(struct intel_plane *plane,
struct intel_crtc *crtc);
bool (*get_hw_state)(struct intel_plane *plane, enum pipe *pipe);
@@ -1351,6 +1374,27 @@ hdmi_to_dig_port(struct intel_hdmi *intel_hdmi)
return container_of(intel_hdmi, struct intel_digital_port, hdmi);
}
+static inline struct intel_plane_state *
+intel_atomic_get_plane_state(struct intel_atomic_state *state,
+ struct intel_plane *plane)
+{
+ struct drm_plane_state *ret =
+ drm_atomic_get_plane_state(&state->base, &plane->base);
+
+ if (IS_ERR(ret))
+ return ERR_CAST(ret);
+
+ return to_intel_plane_state(ret);
+}
+
+static inline struct intel_plane_state *
+intel_atomic_get_old_plane_state(struct intel_atomic_state *state,
+ struct intel_plane *plane)
+{
+ return to_intel_plane_state(drm_atomic_get_old_plane_state(&state->base,
+ &plane->base));
+}
+
static inline struct intel_plane_state *
intel_atomic_get_new_plane_state(struct intel_atomic_state *state,
struct intel_plane *plane)
@@ -2158,6 +2202,15 @@ struct intel_plane *
skl_universal_plane_create(struct drm_i915_private *dev_priv,
enum pipe pipe, enum plane_id plane_id);
+static inline bool icl_is_nv12_y_plane(enum plane_id id)
+{
+ /* Don't need to do a gen check, these planes are only available on gen11 */
+ if (id == PLANE_SPRITE4 || id == PLANE_SPRITE5)
+ return true;
+
+ return false;
+}
+
/* intel_tv.c */
void intel_tv_init(struct drm_i915_private *dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index f42b8c319046..9ba39a9c7d1c 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5153,11 +5153,12 @@ skl_ddb_add_affected_planes(struct intel_crtc_state *cstate)
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
struct skl_ddb_allocation *new_ddb = &intel_state->wm_results.ddb;
struct skl_ddb_allocation *cur_ddb = &dev_priv->wm.skl_hw.ddb;
- struct drm_plane_state *plane_state;
struct drm_plane *plane;
enum pipe pipe = intel_crtc->pipe;
drm_for_each_plane_mask(plane, dev, cstate->base.plane_mask) {
+ struct drm_plane_state *plane_state;
+ struct intel_plane *linked;
enum plane_id plane_id = to_intel_plane(plane)->id;
if (skl_ddb_entry_equal(&cur_ddb->plane[pipe][plane_id],
@@ -5169,6 +5170,15 @@ skl_ddb_add_affected_planes(struct intel_crtc_state *cstate)
plane_state = drm_atomic_get_plane_state(state, plane);
if (IS_ERR(plane_state))
return PTR_ERR(plane_state);
+
+ /* Make sure linked plane is updated too */
+ linked = to_intel_plane_state(plane_state)->linked_plane;
+ if (!linked)
+ continue;
+
+ plane_state = drm_atomic_get_plane_state(state, &linked->base);
+ if (IS_ERR(plane_state))
+ return PTR_ERR(plane_state);
}
return 0;
--
2.19.1
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