From: Rob Clark robdclark@chromium.org
First step in re-working the atomic related internal API to prepare for async updates pending.. ->wait_flush() is intended to block until there is no in-progress flush.
A crtc_mask is used, rather than an atomic state object, as this will later be used for async flush after the atomic state is destroyed.
This replaces ->wait_for_crtc_commit_done()
v2: update for review comments
Signed-off-by: Rob Clark robdclark@chromium.org --- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 11 ++++++- drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c | 17 ++++++---- drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 17 ++++++---- drivers/gpu/drm/msm/msm_atomic.c | 42 ++++++++++-------------- drivers/gpu/drm/msm/msm_kms.h | 9 +++-- 5 files changed, 54 insertions(+), 42 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index 31454cc5d8c5..df421b986bc3 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -388,6 +388,15 @@ static void dpu_kms_wait_for_commit_done(struct msm_kms *kms, } }
+static void dpu_kms_wait_flush(struct msm_kms *kms, unsigned crtc_mask) +{ + struct dpu_kms *dpu_kms = to_dpu_kms(kms); + struct drm_crtc *crtc; + + for_each_crtc_mask(dpu_kms->dev, crtc, crtc_mask) + dpu_kms_wait_for_commit_done(kms, crtc); +} + static int _dpu_kms_initialize_dsi(struct drm_device *dev, struct msm_drm_private *priv, struct dpu_kms *dpu_kms) @@ -682,8 +691,8 @@ static const struct msm_kms_funcs kms_funcs = { .irq = dpu_irq, .prepare_commit = dpu_kms_prepare_commit, .commit = dpu_kms_commit, + .wait_flush = dpu_kms_wait_flush, .complete_commit = dpu_kms_complete_commit, - .wait_for_crtc_commit_done = dpu_kms_wait_for_commit_done, .enable_vblank = dpu_kms_enable_vblank, .disable_vblank = dpu_kms_disable_vblank, .check_modified_format = dpu_format_check_modified_format, diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c index 7a9ab55b4608..32dcb1d7860c 100644 --- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c @@ -107,6 +107,15 @@ static void mdp4_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *st drm_crtc_vblank_get(crtc); }
+static void mdp4_wait_flush(struct msm_kms *kms, unsigned crtc_mask) +{ + struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms)); + struct drm_crtc *crtc; + + for_each_crtc_mask(mdp4_kms->dev, crtc, crtc_mask) + mdp4_crtc_wait_for_commit_done(crtc); +} + static void mdp4_complete_commit(struct msm_kms *kms, struct drm_atomic_state *state) { struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms)); @@ -123,12 +132,6 @@ static void mdp4_complete_commit(struct msm_kms *kms, struct drm_atomic_state *s mdp4_disable(mdp4_kms); }
-static void mdp4_wait_for_crtc_commit_done(struct msm_kms *kms, - struct drm_crtc *crtc) -{ - mdp4_crtc_wait_for_commit_done(crtc); -} - static long mdp4_round_pixclk(struct msm_kms *kms, unsigned long rate, struct drm_encoder *encoder) { @@ -179,8 +182,8 @@ static const struct mdp_kms_funcs kms_funcs = { .enable_vblank = mdp4_enable_vblank, .disable_vblank = mdp4_disable_vblank, .prepare_commit = mdp4_prepare_commit, + .wait_flush = mdp4_wait_flush, .complete_commit = mdp4_complete_commit, - .wait_for_crtc_commit_done = mdp4_wait_for_crtc_commit_done, .get_format = mdp_get_format, .round_pixclk = mdp4_round_pixclk, .destroy = mdp4_destroy, diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c index 8bf5f3264dc9..440e000c8c3d 100644 --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c @@ -154,6 +154,15 @@ static void mdp5_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *st mdp5_smp_prepare_commit(mdp5_kms->smp, &global_state->smp); }
+static void mdp5_wait_flush(struct msm_kms *kms, unsigned crtc_mask) +{ + struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); + struct drm_crtc *crtc; + + for_each_crtc_mask(mdp5_kms->dev, crtc, crtc_mask) + mdp5_crtc_wait_for_commit_done(crtc); +} + static void mdp5_complete_commit(struct msm_kms *kms, struct drm_atomic_state *state) { struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); @@ -170,12 +179,6 @@ static void mdp5_complete_commit(struct msm_kms *kms, struct drm_atomic_state *s pm_runtime_put_sync(dev); }
-static void mdp5_wait_for_crtc_commit_done(struct msm_kms *kms, - struct drm_crtc *crtc) -{ - mdp5_crtc_wait_for_commit_done(crtc); -} - static long mdp5_round_pixclk(struct msm_kms *kms, unsigned long rate, struct drm_encoder *encoder) { @@ -272,8 +275,8 @@ static const struct mdp_kms_funcs kms_funcs = { .enable_vblank = mdp5_enable_vblank, .disable_vblank = mdp5_disable_vblank, .prepare_commit = mdp5_prepare_commit, + .wait_flush = mdp5_wait_flush, .complete_commit = mdp5_complete_commit, - .wait_for_crtc_commit_done = mdp5_wait_for_crtc_commit_done, .get_format = mdp_get_format, .round_pixclk = mdp5_round_pixclk, .set_split_display = mdp5_set_split_display, diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c index e5aae1645933..4ca4b654c221 100644 --- a/drivers/gpu/drm/msm/msm_atomic.c +++ b/drivers/gpu/drm/msm/msm_atomic.c @@ -10,28 +10,6 @@ #include "msm_gem.h" #include "msm_kms.h"
-static void msm_atomic_wait_for_commit_done(struct drm_device *dev, - struct drm_atomic_state *old_state) -{ - struct drm_crtc *crtc; - struct drm_crtc_state *new_crtc_state; - struct msm_drm_private *priv = old_state->dev->dev_private; - struct msm_kms *kms = priv->kms; - int i; - - for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) { - if (!new_crtc_state->active) - continue; - - if (drm_crtc_vblank_get(crtc)) - continue; - - kms->funcs->wait_for_crtc_commit_done(kms, crtc); - - drm_crtc_vblank_put(crtc); - } -} - int msm_atomic_prepare_fb(struct drm_plane *plane, struct drm_plane_state *new_state) { @@ -51,11 +29,28 @@ int msm_atomic_prepare_fb(struct drm_plane *plane, return msm_framebuffer_prepare(new_state->fb, kms->aspace); }
+/* Get bitmask of crtcs that will need to be flushed. The bitmask + * can be used with for_each_crtc_mask() iterator, to iterate + * effected crtcs without needing to preserve the atomic state. + */ +static unsigned get_crtc_mask(struct drm_atomic_state *state) +{ + struct drm_crtc_state *crtc_state; + struct drm_crtc *crtc; + unsigned i, mask = 0; + + for_each_new_crtc_in_state(state, crtc, crtc_state, i) + mask |= drm_crtc_mask(crtc); + + return mask; +} + void msm_atomic_commit_tail(struct drm_atomic_state *state) { struct drm_device *dev = state->dev; struct msm_drm_private *priv = dev->dev_private; struct msm_kms *kms = priv->kms; + unsigned crtc_mask = get_crtc_mask(state);
kms->funcs->prepare_commit(kms, state);
@@ -70,8 +65,7 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state) kms->funcs->commit(kms, state); }
- msm_atomic_wait_for_commit_done(dev, state); - + kms->funcs->wait_flush(kms, crtc_mask); kms->funcs->complete_commit(kms, state);
drm_atomic_helper_commit_hw_done(state); diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h index c7588a42635e..a112dfb36301 100644 --- a/drivers/gpu/drm/msm/msm_kms.h +++ b/drivers/gpu/drm/msm/msm_kms.h @@ -34,9 +34,8 @@ struct msm_kms_funcs { void (*prepare_commit)(struct msm_kms *kms, struct drm_atomic_state *state); void (*commit)(struct msm_kms *kms, struct drm_atomic_state *state); void (*complete_commit)(struct msm_kms *kms, struct drm_atomic_state *state); - /* functions to wait for atomic commit completed on each CRTC */ - void (*wait_for_crtc_commit_done)(struct msm_kms *kms, - struct drm_crtc *crtc); + void (*wait_flush)(struct msm_kms *kms, unsigned crtc_mask); + /* get msm_format w/ optional format modifiers from drm_mode_fb_cmd2 */ const struct msm_format *(*get_format)(struct msm_kms *kms, const uint32_t format, @@ -98,4 +97,8 @@ struct msm_mdss { int mdp5_mdss_init(struct drm_device *dev); int dpu_mdss_init(struct drm_device *dev);
+#define for_each_crtc_mask(dev, crtc, crtc_mask) \ + drm_for_each_crtc(crtc, dev) \ + for_each_if (drm_crtc_mask(crtc) & (crtc_mask)) + #endif /* __MSM_KMS_H__ */