From: Ville Syrjälä ville.syrjala@linux.intel.com
All the plane->fb/old_fb/crtc dance of __setplane_internal() is pointless on atomic drivers. So let's just introduce a simpler version that skips all that.
Ideally we could also skip the __setplane_check() as drm_atomic_plane_check() already checks for everything, but the legacy cursor/"async" .update_plane() tricks bypass that so we still need to call __setplane_check(). Toss in a FIXME to remind someone to clean this up later.
v2: Use drm_drv_uses_atomic_modeset() (Daniel)
Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch --- drivers/gpu/drm/drm_plane.c | 68 +++++++++++++++++++++++++++++++++++++-------- 1 file changed, 57 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index 5c97a0131484..6153cbda239f 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -649,6 +649,8 @@ static int __setplane_internal(struct drm_plane *plane, { int ret = 0;
+ WARN_ON(drm_drv_uses_atomic_modeset(plane->dev)); + /* No fb means shut it down */ if (!fb) { plane->old_fb = plane->fb; @@ -673,11 +675,9 @@ static int __setplane_internal(struct drm_plane *plane, crtc_x, crtc_y, crtc_w, crtc_h, src_x, src_y, src_w, src_h, ctx); if (!ret) { - if (!plane->state) { - plane->crtc = crtc; - plane->fb = fb; - drm_framebuffer_get(plane->fb); - } + plane->crtc = crtc; + plane->fb = fb; + drm_framebuffer_get(plane->fb); } else { plane->old_fb = NULL; } @@ -690,6 +690,41 @@ static int __setplane_internal(struct drm_plane *plane, return ret; }
+static int __setplane_atomic(struct drm_plane *plane, + struct drm_crtc *crtc, + struct drm_framebuffer *fb, + int32_t crtc_x, int32_t crtc_y, + uint32_t crtc_w, uint32_t crtc_h, + uint32_t src_x, uint32_t src_y, + uint32_t src_w, uint32_t src_h, + struct drm_modeset_acquire_ctx *ctx) +{ + int ret; + + WARN_ON(!drm_drv_uses_atomic_modeset(plane->dev)); + + /* No fb means shut it down */ + if (!fb) + return plane->funcs->disable_plane(plane, ctx); + + /* + * FIXME: This is redundant with drm_atomic_plane_check(), + * but the legacy cursor/"async" .update_plane() tricks + * don't call that so we still need this here. Should remove + * this when all .update_plane() implementations have been + * fixed to call drm_atomic_plane_check(). + */ + ret = __setplane_check(plane, crtc, fb, + crtc_x, crtc_y, crtc_w, crtc_h, + src_x, src_y, src_w, src_h); + if (ret) + return ret; + + return plane->funcs->update_plane(plane, crtc, fb, + crtc_x, crtc_y, crtc_w, crtc_h, + src_x, src_y, src_w, src_h, ctx); +} + static int setplane_internal(struct drm_plane *plane, struct drm_crtc *crtc, struct drm_framebuffer *fb, @@ -707,9 +742,15 @@ static int setplane_internal(struct drm_plane *plane, ret = drm_modeset_lock_all_ctx(plane->dev, &ctx); if (ret) goto fail; - ret = __setplane_internal(plane, crtc, fb, - crtc_x, crtc_y, crtc_w, crtc_h, - src_x, src_y, src_w, src_h, &ctx); + + if (drm_drv_uses_atomic_modeset(plane->dev)) + ret = __setplane_atomic(plane, crtc, fb, + crtc_x, crtc_y, crtc_w, crtc_h, + src_x, src_y, src_w, src_h, &ctx); + else + ret = __setplane_internal(plane, crtc, fb, + crtc_x, crtc_y, crtc_w, crtc_h, + src_x, src_y, src_w, src_h, &ctx);
fail: if (ret == -EDEADLK) { @@ -841,9 +882,14 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc, src_h = fb->height << 16; }
- ret = __setplane_internal(plane, crtc, fb, - crtc_x, crtc_y, crtc_w, crtc_h, - 0, 0, src_w, src_h, ctx); + if (drm_drv_uses_atomic_modeset(dev)) + ret = __setplane_atomic(plane, crtc, fb, + crtc_x, crtc_y, crtc_w, crtc_h, + 0, 0, src_w, src_h, ctx); + else + ret = __setplane_internal(plane, crtc, fb, + crtc_x, crtc_y, crtc_w, crtc_h, + 0, 0, src_w, src_h, ctx);
if (fb) drm_framebuffer_put(fb);