drm/sti: use atomic_helper for commit

Since nonblocking atomic commits are now supported, the driver can
now use drm_atomic_helper_commit().

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Vincent Abriou <vincent.abriou@st.com>

diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
index 788feed..9e4d96f 100644 (file)
--- a/drivers/gpu/drm/sti/sti_drv.c
+++ b/drivers/gpu/drm/sti/sti_drv.c
@@ -115,50 +115,13 @@ err:
        return ret;
 }
 
-static void sti_atomic_schedule(struct sti_private *private,
-                               struct drm_atomic_state *state)
+static void sti_drm_dbg_cleanup(struct drm_minor *minor)
 {
-       private->commit.state = state;
-       schedule_work(&private->commit.work);
-}
-
-static void sti_atomic_complete(struct sti_private *private,
-                               struct drm_atomic_state *state)
-{
-       struct drm_device *drm = private->drm_dev;
-
-       /*
-        * Everything below can be run asynchronously without the need to grab
-        * any modeset locks at all under one condition: It must be guaranteed
-        * that the asynchronous work has either been cancelled (if the driver
-        * supports it, which at least requires that the framebuffers get
-        * cleaned up with drm_atomic_helper_cleanup_planes()) or completed
-        * before the new state gets committed on the software side with
-        * drm_atomic_helper_swap_state().
-        *
-        * This scheme allows new atomic state updates to be prepared and
-        * checked in parallel to the asynchronous completion of the previous
-        * update. Which is important since compositors need to figure out the
-        * composition of the next frame right after having submitted the
-        * current layout.
-        */
-
-       drm_atomic_helper_commit_modeset_disables(drm, state);
-       drm_atomic_helper_commit_planes(drm, state, 0);
-       drm_atomic_helper_commit_modeset_enables(drm, state);
+       drm_debugfs_remove_files(sti_drm_dbg_list,
+                                ARRAY_SIZE(sti_drm_dbg_list), minor);
 
-       drm_atomic_helper_wait_for_vblanks(drm, state);
-
-       drm_atomic_helper_cleanup_planes(drm, state);
-       drm_atomic_state_put(state);
-}
-
-static void sti_atomic_work(struct work_struct *work)
-{
-       struct sti_private *private = container_of(work,
-                       struct sti_private, commit.work);
-
-       sti_atomic_complete(private, private->commit.state);
+       drm_debugfs_remove_files((struct drm_info_list *)&sti_drm_fps_fops,
+                                1, minor);
 }
 
 static int sti_atomic_check(struct drm_device *dev,
@@ -181,38 +144,6 @@ static int sti_atomic_check(struct drm_device *dev,
        return ret;
 }
 
-static int sti_atomic_commit(struct drm_device *drm,
-                            struct drm_atomic_state *state, bool nonblock)
-{
-       struct sti_private *private = drm->dev_private;
-       int err;
-
-       err = drm_atomic_helper_prepare_planes(drm, state);
-       if (err)
-               return err;
-
-       /* serialize outstanding nonblocking commits */
-       mutex_lock(&private->commit.lock);
-       flush_work(&private->commit.work);
-
-       /*
-        * This is the point of no return - everything below never fails except
-        * when the hw goes bonghits. Which means we can commit the new state on
-        * the software side now.
-        */
-
-       drm_atomic_helper_swap_state(state, true);
-
-       drm_atomic_state_get(state);
-       if (nonblock)
-               sti_atomic_schedule(private, state);
-       else
-               sti_atomic_complete(private, state);
-
-       mutex_unlock(&private->commit.lock);
-       return 0;
-}
-
 static void sti_output_poll_changed(struct drm_device *ddev)
 {
        struct sti_private *private = ddev->dev_private;
@@ -224,7 +155,7 @@ static const struct drm_mode_config_funcs sti_mode_config_funcs = {
        .fb_create = drm_fb_cma_create,
        .output_poll_changed = sti_output_poll_changed,
        .atomic_check = sti_atomic_check,
-       .atomic_commit = sti_atomic_commit,
+       .atomic_commit = drm_atomic_helper_commit,
 };
 
 static void sti_mode_config_init(struct drm_device *dev)
@@ -304,9 +235,6 @@ static int sti_init(struct drm_device *ddev)
        dev_set_drvdata(ddev->dev, ddev);
        private->drm_dev = ddev;
 
-       mutex_init(&private->commit.lock);
-       INIT_WORK(&private->commit.work, sti_atomic_work);
-
        drm_mode_config_init(ddev);
 
        sti_mode_config_init(ddev);

diff --git a/drivers/gpu/drm/sti/sti_drv.h b/drivers/gpu/drm/sti/sti_drv.h
index 4c75845..6502ed2 100644 (file)
--- a/drivers/gpu/drm/sti/sti_drv.h
+++ b/drivers/gpu/drm/sti/sti_drv.h
@@ -25,12 +25,6 @@ struct sti_private {
        struct drm_property *plane_zorder_property;
        struct drm_device *drm_dev;
        struct drm_fbdev_cma *fbdev;
-
-       struct {
-               struct drm_atomic_state *state;
-               struct work_struct work;
-               struct mutex lock;
-       } commit;
 };
 
 extern struct platform_driver sti_tvout_driver;