Now that all of the msm-specific goo is tucked safely away we can switch over to using the atomic helper commit directly. \o/
Changes in v2: - None Changes in v3: - Rebased on Archit's private_obj set
Cc: Abhinav Kumar abhinavk@codeaurora.org Signed-off-by: Sean Paul seanpaul@chromium.org --- drivers/gpu/drm/msm/msm_atomic.c | 139 +------------------------------ drivers/gpu/drm/msm/msm_drv.c | 7 +- drivers/gpu/drm/msm/msm_drv.h | 3 +- 3 files changed, 8 insertions(+), 141 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c index a31aa417b80d..2da5e2150d15 100644 --- a/drivers/gpu/drm/msm/msm_atomic.c +++ b/drivers/gpu/drm/msm/msm_atomic.c @@ -17,8 +17,6 @@
#include "msm_drv.h" #include "msm_kms.h" -#include "msm_gem.h" -#include "msm_fence.h"
static void msm_atomic_wait_for_commit_done(struct drm_device *dev, struct drm_atomic_state *old_state) @@ -37,7 +35,7 @@ static void msm_atomic_wait_for_commit_done(struct drm_device *dev, } }
-static void msm_atomic_commit_tail(struct drm_atomic_state *state) +void msm_atomic_commit_tail(struct drm_atomic_state *state) { struct drm_device *dev = state->dev; struct msm_drm_private *priv = dev->dev_private; @@ -51,19 +49,6 @@ static void msm_atomic_commit_tail(struct drm_atomic_state *state)
drm_atomic_helper_commit_modeset_enables(dev, state);
- /* NOTE: _wait_for_vblanks() only waits for vblank on - * enabled CRTCs. So we end up faulting when disabling - * due to (potentially) unref'ing the outgoing fb's - * before the vblank when the disable has latched. - * - * But if it did wait on disabled (or newly disabled) - * CRTCs, that would be racy (ie. we could have missed - * the irq. We need some way to poll for pipe shut - * down. Or just live with occasionally hitting the - * timeout in the CRTC disable path (which really should - * not be critical path) - */ - msm_atomic_wait_for_commit_done(dev, state);
kms->funcs->complete_commit(kms, state); @@ -74,125 +59,3 @@ static void msm_atomic_commit_tail(struct drm_atomic_state *state)
drm_atomic_helper_cleanup_planes(dev, state); } - -/* The (potentially) asynchronous part of the commit. At this point - * nothing can fail short of armageddon. - */ -static void commit_tail(struct drm_atomic_state *state) -{ - drm_atomic_helper_wait_for_fences(state->dev, state, false); - - drm_atomic_helper_wait_for_dependencies(state); - - msm_atomic_commit_tail(state); - - drm_atomic_helper_commit_cleanup_done(state); - - drm_atomic_state_put(state); -} - -static void commit_work(struct work_struct *work) -{ - struct drm_atomic_state *state = container_of(work, - struct drm_atomic_state, - commit_work); - commit_tail(state); -} - -/** - * drm_atomic_helper_commit - commit validated state object - * @dev: DRM device - * @state: the driver state object - * @nonblock: nonblocking commit - * - * This function commits a with drm_atomic_helper_check() pre-validated state - * object. This can still fail when e.g. the framebuffer reservation fails. - * - * RETURNS - * Zero for success or -errno. - */ -int msm_atomic_commit(struct drm_device *dev, - struct drm_atomic_state *state, bool nonblock) -{ - struct msm_drm_private *priv = dev->dev_private; - struct drm_crtc *crtc; - struct drm_crtc_state *crtc_state; - struct drm_plane *plane; - struct drm_plane_state *old_plane_state, *new_plane_state; - int i, ret; - - /* - * Note that plane->atomic_async_check() should fail if we need - * to re-assign hwpipe or anything that touches global atomic - * state, so we'll never go down the async update path in those - * cases. - */ - if (state->async_update) { - ret = drm_atomic_helper_prepare_planes(dev, state); - if (ret) - return ret; - - drm_atomic_helper_async_commit(dev, state); - drm_atomic_helper_cleanup_planes(dev, state); - return 0; - } - - ret = drm_atomic_helper_setup_commit(state, nonblock); - if (ret) - return ret; - - INIT_WORK(&state->commit_work, commit_work); - - ret = drm_atomic_helper_prepare_planes(dev, state); - if (ret) - return ret; - - if (!nonblock) { - ret = drm_atomic_helper_wait_for_fences(dev, state, true); - if (ret) - goto error; - } - - /* - * 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. - * - * swap driver private state while still holding state_lock - */ - BUG_ON(drm_atomic_helper_swap_state(state, true) < 0); - - /* - * 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. - */ - - /* - * Everything below can be run asynchronously without the need to grab - * any modeset locks at all under one conditions: 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_state_get(state); - if (nonblock) - queue_work(system_unbound_wq, &state->commit_work); - else - commit_tail(state); - - return 0; - -error: - drm_atomic_helper_cleanup_planes(dev, state); - return ret; -} diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 9cec74c79aa2..021a0b6f9a59 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -41,7 +41,11 @@ static const struct drm_mode_config_funcs mode_config_funcs = { .fb_create = msm_framebuffer_create, .output_poll_changed = drm_fb_helper_output_poll_changed, .atomic_check = drm_atomic_helper_check, - .atomic_commit = msm_atomic_commit, + .atomic_commit = drm_atomic_helper_commit, +}; + +static const struct drm_mode_config_helper_funcs mode_config_helper_funcs = { + .atomic_commit_tail = msm_atomic_commit_tail, };
#ifdef CONFIG_DRM_MSM_REGISTER_LOGGING @@ -438,6 +442,7 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) }
ddev->mode_config.funcs = &mode_config_funcs; + ddev->mode_config.helper_private = &mode_config_helper_funcs;
ret = drm_vblank_init(ddev, priv->num_crtcs); if (ret < 0) { diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index f9237758ade3..1cdb9d491a8d 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -156,8 +156,7 @@ struct msm_format { uint32_t pixel_format; };
-int msm_atomic_commit(struct drm_device *dev, - struct drm_atomic_state *state, bool nonblock); +void msm_atomic_commit_tail(struct drm_atomic_state *state); struct drm_atomic_state *msm_atomic_state_alloc(struct drm_device *dev); void msm_atomic_state_clear(struct drm_atomic_state *state); void msm_atomic_state_free(struct drm_atomic_state *state);