diff mbox

[RESEND,6/6] drm/vc4: update cursors asynchronously through atomic

Message ID 20170525195144.18134-7-gustavo@padovan.org (mailing list archive)
State New, archived
Headers show

Commit Message

Gustavo Padovan May 25, 2017, 7:51 p.m. UTC 
From: Gustavo Padovan <gustavo.padovan@collabora.com>

Add support to async updates of cursors by using the new atomic
interface for that. Basically what this commit does is do what
vc4_update_plane() did but through atomic.

v3: move size checks back to drivers (Ville Syrjälä)

v2: move fb setting to core and use new state (Eric Anholt)

Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Tested-by: Robert Foss <robert.foss@collabora.com>
---
 drivers/gpu/drm/vc4/vc4_plane.c | 99 +++++++++++++++--------------------------
 1 file changed, 35 insertions(+), 64 deletions(-)

Comments

Eric Anholt June 1, 2017, 12:43 a.m. UTC | #1 
Gustavo Padovan <gustavo@padovan.org> writes:

> From: Gustavo Padovan <gustavo.padovan@collabora.com>
>
> Add support to async updates of cursors by using the new atomic

"Add support for"

> interface for that. Basically what this commit does is do what
> vc4_update_plane() did but through atomic.
>
> v3: move size checks back to drivers (Ville Syrjälä)
>
> v2: move fb setting to core and use new state (Eric Anholt)

Given that vc4 isn't using drm_atomic_helper_commit(), isn't this
effectively disabling async cursor updates on vc4?
Gustavo Padovan June 1, 2017, 2:07 a.m. UTC | #2 
2017-05-31 Eric Anholt <eric@anholt.net>:

> Gustavo Padovan <gustavo@padovan.org> writes:
> 
> > From: Gustavo Padovan <gustavo.padovan@collabora.com>
> >
> > Add support to async updates of cursors by using the new atomic
> 
> "Add support for"
> 
> > interface for that. Basically what this commit does is do what
> > vc4_update_plane() did but through atomic.
> >
> > v3: move size checks back to drivers (Ville Syrjälä)
> >
> > v2: move fb setting to core and use new state (Eric Anholt)
> 
> Given that vc4 isn't using drm_atomic_helper_commit(), isn't this
> effectively disabling async cursor updates on vc4?

Right, yes. I didn't have a chance to run this in at the hw as I don't
have it right now. I'll update the patch and resend.

Gustavo
diff mbox

Patch

diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
index d34cd53..05e9f5f 100644
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -735,70 +735,38 @@  void vc4_plane_async_set_fb(struct drm_plane *plane, struct drm_framebuffer *fb)
 	vc4_state->dlist[vc4_state->ptr0_offset] = addr;
 }
 
-static const struct drm_plane_helper_funcs vc4_plane_helper_funcs = {
-	.atomic_check = vc4_plane_atomic_check,
-	.atomic_update = vc4_plane_atomic_update,
-};
-
-static void vc4_plane_destroy(struct drm_plane *plane)
-{
-	drm_plane_helper_disable(plane);
-	drm_plane_cleanup(plane);
-}
-
-/* Implements immediate (non-vblank-synced) updates of the cursor
- * position, or falls back to the atomic helper otherwise.
- */
-static int
-vc4_update_plane(struct drm_plane *plane,
-		 struct drm_crtc *crtc,
-		 struct drm_framebuffer *fb,
-		 int crtc_x, int crtc_y,
-		 unsigned int crtc_w, unsigned int crtc_h,
-		 uint32_t src_x, uint32_t src_y,
-		 uint32_t src_w, uint32_t src_h,
-		 struct drm_modeset_acquire_ctx *ctx)
+static int vc4_plane_atomic_async_check(struct drm_plane *plane,
+					struct drm_plane_state *state)
 {
-	struct drm_plane_state *plane_state;
-	struct vc4_plane_state *vc4_state;
-
-	if (plane != crtc->cursor)
-		goto out;
-
-	plane_state = plane->state;
-	vc4_state = to_vc4_plane_state(plane_state);
+	if (plane != state->crtc->cursor)
+		return -EINVAL;
 
-	if (!plane_state)
-		goto out;
+	if (!plane->state)
+		return -EINVAL;
 
 	/* No configuring new scaling in the fast path. */
-	if (crtc_w != plane_state->crtc_w ||
-	    crtc_h != plane_state->crtc_h ||
-	    src_w != plane_state->src_w ||
-	    src_h != plane_state->src_h) {
-		goto out;
+	if (state->crtc_w != plane->state->crtc_w ||
+	    state->crtc_h != plane->state->crtc_h ||
+	    state->src_w != plane->state->src_w ||
+	    state->src_h != plane->state->src_h) {
+		return -EINVAL;
 	}
 
-	if (fb != plane_state->fb) {
-		drm_atomic_set_fb_for_plane(plane->state, fb);
-		vc4_plane_async_set_fb(plane, fb);
-	}
+	return 0;
+}
 
-	/* Set the cursor's position on the screen.  This is the
-	 * expected change from the drm_mode_cursor_universal()
-	 * helper.
-	 */
-	plane_state->crtc_x = crtc_x;
-	plane_state->crtc_y = crtc_y;
+static void vc4_plane_atomic_async_update(struct drm_plane *plane,
+					  struct drm_plane_state *new_state)
+{
+	struct vc4_plane_state *vc4_state = to_vc4_plane_state(plane->state);
 
-	/* Allow changing the start position within the cursor BO, if
-	 * that matters.
-	 */
-	plane_state->src_x = src_x;
-	plane_state->src_y = src_y;
+	plane->state->src_x = new_state->src_x;
+	plane->state->src_y = new_state->src_y;
+	plane->state->crtc_x = new_state->crtc_x;
+	plane->state->crtc_y = new_state->crtc_y;
 
-	/* Update the display list based on the new crtc_x/y. */
-	vc4_plane_atomic_check(plane, plane_state);
+	if (plane->state->fb != new_state->fb)
+		vc4_plane_async_set_fb(plane, new_state->fb);
 
 	/* Note that we can't just call vc4_plane_write_dlist()
 	 * because that would smash the context data that the HVS is
@@ -810,20 +778,23 @@  vc4_update_plane(struct drm_plane *plane,
 	       &vc4_state->hw_dlist[vc4_state->pos2_offset]);
 	writel(vc4_state->dlist[vc4_state->ptr0_offset],
 	       &vc4_state->hw_dlist[vc4_state->ptr0_offset]);
+}
 
-	return 0;
+static const struct drm_plane_helper_funcs vc4_plane_helper_funcs = {
+	.atomic_check = vc4_plane_atomic_check,
+	.atomic_update = vc4_plane_atomic_update,
+	.atomic_async_check = vc4_plane_atomic_async_check,
+	.atomic_async_update = vc4_plane_atomic_async_update,
+};
 
-out:
-	return drm_atomic_helper_update_plane(plane, crtc, fb,
-					      crtc_x, crtc_y,
-					      crtc_w, crtc_h,
-					      src_x, src_y,
-					      src_w, src_h,
-					      ctx);
+static void vc4_plane_destroy(struct drm_plane *plane)
+{
+	drm_plane_helper_disable(plane);
+	drm_plane_cleanup(plane);
 }
 
 static const struct drm_plane_funcs vc4_plane_funcs = {
-	.update_plane = vc4_update_plane,
+	.update_plane = drm_atomic_helper_update_plane,
 	.disable_plane = drm_atomic_helper_disable_plane,
 	.destroy = vc4_plane_destroy,
 	.set_property = NULL,