drm: extract legacy framebuffer remove
I got confused every time I audited what that lock_all is doing in there until realizing it's for legacy kms only. Make that a notch more obvious by having 2 entirely different paths. While at it also move the atomic version of this into drm_framebuffer.c, there's no reason it needs to be in drm_atomic.c. That way it becomes a simple static function. Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170403083304.9083-15-daniel.vetter@ffwll.ch
This commit is contained in:
Daniel Vetter
Родитель
3a09f737ee
Коммит
941b8caaa8
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@ -2081,94 +2081,6 @@ static void complete_crtc_signaling(struct drm_device *dev,
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kfree(fence_state);
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}
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int drm_atomic_remove_fb(struct drm_framebuffer *fb)
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{
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struct drm_modeset_acquire_ctx ctx;
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struct drm_device *dev = fb->dev;
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struct drm_atomic_state *state;
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struct drm_plane *plane;
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struct drm_connector *conn;
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struct drm_connector_state *conn_state;
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int i, ret = 0;
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unsigned plane_mask;
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state = drm_atomic_state_alloc(dev);
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if (!state)
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return -ENOMEM;
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drm_modeset_acquire_init(&ctx, 0);
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state->acquire_ctx = &ctx;
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retry:
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plane_mask = 0;
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ret = drm_modeset_lock_all_ctx(dev, &ctx);
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if (ret)
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goto unlock;
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drm_for_each_plane(plane, dev) {
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struct drm_plane_state *plane_state;
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if (plane->state->fb != fb)
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continue;
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plane_state = drm_atomic_get_plane_state(state, plane);
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if (IS_ERR(plane_state)) {
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ret = PTR_ERR(plane_state);
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goto unlock;
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}
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if (plane_state->crtc->primary == plane) {
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struct drm_crtc_state *crtc_state;
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crtc_state = drm_atomic_get_existing_crtc_state(state, plane_state->crtc);
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ret = drm_atomic_add_affected_connectors(state, plane_state->crtc);
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if (ret)
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goto unlock;
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crtc_state->active = false;
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ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
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if (ret)
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goto unlock;
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}
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drm_atomic_set_fb_for_plane(plane_state, NULL);
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ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
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if (ret)
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goto unlock;
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plane_mask |= BIT(drm_plane_index(plane));
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plane->old_fb = plane->fb;
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}
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for_each_connector_in_state(state, conn, conn_state, i) {
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ret = drm_atomic_set_crtc_for_connector(conn_state, NULL);
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if (ret)
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goto unlock;
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}
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if (plane_mask)
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ret = drm_atomic_commit(state);
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unlock:
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if (plane_mask)
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drm_atomic_clean_old_fb(dev, plane_mask, ret);
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if (ret == -EDEADLK) {
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drm_modeset_backoff(&ctx);
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goto retry;
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}
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drm_atomic_state_put(state);
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drm_modeset_drop_locks(&ctx);
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drm_modeset_acquire_fini(&ctx);
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return ret;
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}
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int drm_mode_atomic_ioctl(struct drm_device *dev,
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void *data, struct drm_file *file_priv)
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{
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@ -182,7 +182,6 @@ int drm_atomic_get_property(struct drm_mode_object *obj,
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struct drm_property *property, uint64_t *val);
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int drm_mode_atomic_ioctl(struct drm_device *dev,
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void *data, struct drm_file *file_priv);
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int drm_atomic_remove_fb(struct drm_framebuffer *fb);
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/* drm_plane.c */
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@ -24,6 +24,7 @@
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#include <drm/drmP.h>
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#include <drm/drm_auth.h>
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#include <drm/drm_framebuffer.h>
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#include <drm/drm_atomic.h>
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#include "drm_crtc_internal.h"
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@ -755,6 +756,117 @@ void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
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}
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EXPORT_SYMBOL(drm_framebuffer_cleanup);
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static int atomic_remove_fb(struct drm_framebuffer *fb)
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{
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struct drm_modeset_acquire_ctx ctx;
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struct drm_device *dev = fb->dev;
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struct drm_atomic_state *state;
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struct drm_plane *plane;
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struct drm_connector *conn;
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struct drm_connector_state *conn_state;
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int i, ret = 0;
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unsigned plane_mask;
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state = drm_atomic_state_alloc(dev);
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if (!state)
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return -ENOMEM;
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drm_modeset_acquire_init(&ctx, 0);
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state->acquire_ctx = &ctx;
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retry:
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plane_mask = 0;
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ret = drm_modeset_lock_all_ctx(dev, &ctx);
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if (ret)
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goto unlock;
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drm_for_each_plane(plane, dev) {
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struct drm_plane_state *plane_state;
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if (plane->state->fb != fb)
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continue;
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plane_state = drm_atomic_get_plane_state(state, plane);
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if (IS_ERR(plane_state)) {
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ret = PTR_ERR(plane_state);
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goto unlock;
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}
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if (plane_state->crtc->primary == plane) {
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struct drm_crtc_state *crtc_state;
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crtc_state = drm_atomic_get_existing_crtc_state(state, plane_state->crtc);
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ret = drm_atomic_add_affected_connectors(state, plane_state->crtc);
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if (ret)
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goto unlock;
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crtc_state->active = false;
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ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
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if (ret)
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goto unlock;
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}
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drm_atomic_set_fb_for_plane(plane_state, NULL);
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ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
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if (ret)
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goto unlock;
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plane_mask |= BIT(drm_plane_index(plane));
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plane->old_fb = plane->fb;
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}
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for_each_connector_in_state(state, conn, conn_state, i) {
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ret = drm_atomic_set_crtc_for_connector(conn_state, NULL);
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if (ret)
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goto unlock;
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}
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if (plane_mask)
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ret = drm_atomic_commit(state);
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unlock:
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if (plane_mask)
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drm_atomic_clean_old_fb(dev, plane_mask, ret);
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if (ret == -EDEADLK) {
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drm_modeset_backoff(&ctx);
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goto retry;
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}
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drm_atomic_state_put(state);
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drm_modeset_drop_locks(&ctx);
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drm_modeset_acquire_fini(&ctx);
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return ret;
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}
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static void legacy_remove_fb(struct drm_framebuffer *fb)
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{
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struct drm_device *dev = fb->dev;
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struct drm_crtc *crtc;
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struct drm_plane *plane;
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drm_modeset_lock_all(dev);
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/* remove from any CRTC */
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drm_for_each_crtc(crtc, dev) {
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if (crtc->primary->fb == fb) {
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/* should turn off the crtc */
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if (drm_crtc_force_disable(crtc))
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DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
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}
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}
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drm_for_each_plane(plane, dev) {
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if (plane->fb == fb)
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drm_plane_force_disable(plane);
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}
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drm_modeset_unlock_all(dev);
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}
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/**
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* drm_framebuffer_remove - remove and unreference a framebuffer object
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* @fb: framebuffer to remove
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@ -770,8 +882,6 @@ EXPORT_SYMBOL(drm_framebuffer_cleanup);
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void drm_framebuffer_remove(struct drm_framebuffer *fb)
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{
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struct drm_device *dev;
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struct drm_crtc *crtc;
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struct drm_plane *plane;
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if (!fb)
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return;
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@ -797,29 +907,12 @@ void drm_framebuffer_remove(struct drm_framebuffer *fb)
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*/
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if (drm_framebuffer_read_refcount(fb) > 1) {
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if (drm_drv_uses_atomic_modeset(dev)) {
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int ret = drm_atomic_remove_fb(fb);
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int ret = atomic_remove_fb(fb);
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WARN(ret, "atomic remove_fb failed with %i\n", ret);
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goto out;
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}
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drm_modeset_lock_all(dev);
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/* remove from any CRTC */
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drm_for_each_crtc(crtc, dev) {
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if (crtc->primary->fb == fb) {
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/* should turn off the crtc */
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if (drm_crtc_force_disable(crtc))
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DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
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}
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}
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drm_for_each_plane(plane, dev) {
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if (plane->fb == fb)
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drm_plane_force_disable(plane);
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}
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drm_modeset_unlock_all(dev);
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} else
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legacy_remove_fb(fb);
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}
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out:
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drm_framebuffer_put(fb);
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}
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EXPORT_SYMBOL(drm_framebuffer_remove);
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