drm_modeset_unlock_all(dev);
}
EXPORT_SYMBOL(drm_helper_resume_force_mode);
-
-/**
- * drm_helper_crtc_mode_set - mode_set implementation for atomic plane helpers
- * @crtc: DRM CRTC
- * @mode: DRM display mode which userspace requested
- * @adjusted_mode: DRM display mode adjusted by ->mode_fixup callbacks
- * @x: x offset of the CRTC scanout area on the underlying framebuffer
- * @y: y offset of the CRTC scanout area on the underlying framebuffer
- * @old_fb: previous framebuffer
- *
- * This function implements a callback useable as the ->mode_set callback
- * required by the CRTC helpers. Besides the atomic plane helper functions for
- * the primary plane the driver must also provide the ->mode_set_nofb callback
- * to set up the CRTC.
- *
- * This is a transitional helper useful for converting drivers to the atomic
- * interfaces.
- */
-int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode, int x, int y,
- struct drm_framebuffer *old_fb)
-{
- struct drm_crtc_state *crtc_state;
- const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
- int ret;
-
- if (crtc->funcs->atomic_duplicate_state)
- crtc_state = crtc->funcs->atomic_duplicate_state(crtc);
- else {
- if (!crtc->state)
- drm_atomic_helper_crtc_reset(crtc);
-
- crtc_state = drm_atomic_helper_crtc_duplicate_state(crtc);
- }
-
- if (!crtc_state)
- return -ENOMEM;
-
- crtc_state->planes_changed = true;
- crtc_state->mode_changed = true;
- ret = drm_atomic_set_mode_for_crtc(crtc_state, mode);
- if (ret)
- goto out;
- drm_mode_copy(&crtc_state->adjusted_mode, adjusted_mode);
-
- if (crtc_funcs->atomic_check) {
- ret = crtc_funcs->atomic_check(crtc, crtc_state);
- if (ret)
- goto out;
- }
-
- swap(crtc->state, crtc_state);
-
- crtc_funcs->mode_set_nofb(crtc);
-
- ret = drm_helper_crtc_mode_set_base(crtc, x, y, old_fb);
-
-out:
- if (crtc_state) {
- if (crtc->funcs->atomic_destroy_state)
- crtc->funcs->atomic_destroy_state(crtc, crtc_state);
- else
- drm_atomic_helper_crtc_destroy_state(crtc, crtc_state);
- }
-
- return ret;
-}
-EXPORT_SYMBOL(drm_helper_crtc_mode_set);
-
-/**
- * drm_helper_crtc_mode_set_base - mode_set_base implementation for atomic plane helpers
- * @crtc: DRM CRTC
- * @x: x offset of the CRTC scanout area on the underlying framebuffer
- * @y: y offset of the CRTC scanout area on the underlying framebuffer
- * @old_fb: previous framebuffer
- *
- * This function implements a callback useable as the ->mode_set_base used
- * required by the CRTC helpers. The driver must provide the atomic plane helper
- * functions for the primary plane.
- *
- * This is a transitional helper useful for converting drivers to the atomic
- * interfaces.
- */
-int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
- struct drm_framebuffer *old_fb)
-{
- struct drm_plane_state *plane_state;
- struct drm_plane *plane = crtc->primary;
-
- if (plane->funcs->atomic_duplicate_state)
- plane_state = plane->funcs->atomic_duplicate_state(plane);
- else {
- if (!plane->state)
- drm_atomic_helper_plane_reset(plane);
-
- plane_state = drm_atomic_helper_plane_duplicate_state(plane);
- }
- if (!plane_state)
- return -ENOMEM;
- plane_state->plane = plane;
-
- plane_state->crtc = crtc;
- drm_atomic_set_fb_for_plane(plane_state, crtc->primary->fb);
- plane_state->crtc_x = 0;
- plane_state->crtc_y = 0;
- plane_state->crtc_h = crtc->mode.vdisplay;
- plane_state->crtc_w = crtc->mode.hdisplay;
- plane_state->src_x = x << 16;
- plane_state->src_y = y << 16;
- plane_state->src_h = crtc->mode.vdisplay << 16;
- plane_state->src_w = crtc->mode.hdisplay << 16;
-
- return drm_plane_helper_commit(plane, plane_state, old_fb);
-}
-EXPORT_SYMBOL(drm_helper_crtc_mode_set_base);
.destroy = drm_primary_helper_destroy,
};
EXPORT_SYMBOL(drm_primary_helper_funcs);
-
-int drm_plane_helper_commit(struct drm_plane *plane,
- struct drm_plane_state *plane_state,
- struct drm_framebuffer *old_fb)
-{
- const struct drm_plane_helper_funcs *plane_funcs;
- struct drm_crtc *crtc[2];
- const struct drm_crtc_helper_funcs *crtc_funcs[2];
- int i, ret = 0;
-
- plane_funcs = plane->helper_private;
-
- /* Since this is a transitional helper we can't assume that plane->state
- * is always valid. Hence we need to use plane->crtc instead of
- * plane->state->crtc as the old crtc. */
- crtc[0] = plane->crtc;
- crtc[1] = crtc[0] != plane_state->crtc ? plane_state->crtc : NULL;
-
- for (i = 0; i < 2; i++)
- crtc_funcs[i] = crtc[i] ? crtc[i]->helper_private : NULL;
-
- if (plane_funcs->atomic_check) {
- ret = plane_funcs->atomic_check(plane, plane_state);
- if (ret)
- goto out;
- }
-
- if (plane_funcs->prepare_fb && plane_state->fb != old_fb) {
- ret = plane_funcs->prepare_fb(plane,
- plane_state);
- if (ret)
- goto out;
- }
-
- /* Point of no return, commit sw state. */
- swap(plane->state, plane_state);
-
- for (i = 0; i < 2; i++) {
- if (crtc_funcs[i] && crtc_funcs[i]->atomic_begin)
- crtc_funcs[i]->atomic_begin(crtc[i], crtc[i]->state);
- }
-
- /*
- * Drivers may optionally implement the ->atomic_disable callback, so
- * special-case that here.
- */
- if (drm_atomic_plane_disabling(plane_state, plane->state) &&
- plane_funcs->atomic_disable)
- plane_funcs->atomic_disable(plane, plane_state);
- else
- plane_funcs->atomic_update(plane, plane_state);
-
- for (i = 0; i < 2; i++) {
- if (crtc_funcs[i] && crtc_funcs[i]->atomic_flush)
- crtc_funcs[i]->atomic_flush(crtc[i], crtc[i]->state);
- }
-
- /*
- * If we only moved the plane and didn't change fb's, there's no need to
- * wait for vblank.
- */
- if (plane->state->fb == old_fb)
- goto out;
-
- for (i = 0; i < 2; i++) {
- if (!crtc[i])
- continue;
-
- if (crtc[i]->cursor == plane)
- continue;
-
- /* There's no other way to figure out whether the crtc is running. */
- ret = drm_crtc_vblank_get(crtc[i]);
- if (ret == 0) {
- drm_crtc_wait_one_vblank(crtc[i]);
- drm_crtc_vblank_put(crtc[i]);
- }
-
- ret = 0;
- }
-
- if (plane_funcs->cleanup_fb)
- plane_funcs->cleanup_fb(plane, plane_state);
-out:
- if (plane->funcs->atomic_destroy_state)
- plane->funcs->atomic_destroy_state(plane, plane_state);
- else
- drm_atomic_helper_plane_destroy_state(plane, plane_state);
-
- return ret;
-}
-
-/**
- * drm_plane_helper_update() - Transitional helper for plane update
- * @plane: plane object to update
- * @crtc: owning CRTC of owning plane
- * @fb: framebuffer to flip onto plane
- * @crtc_x: x offset of primary plane on crtc
- * @crtc_y: y offset of primary plane on crtc
- * @crtc_w: width of primary plane rectangle on crtc
- * @crtc_h: height of primary plane rectangle on crtc
- * @src_x: x offset of @fb for panning
- * @src_y: y offset of @fb for panning
- * @src_w: width of source rectangle in @fb
- * @src_h: height of source rectangle in @fb
- * @ctx: lock acquire context, not used here
- *
- * Provides a default plane update handler using the atomic plane update
- * functions. It is fully left to the driver to check plane constraints and
- * handle corner-cases like a fully occluded or otherwise invisible plane.
- *
- * This is useful for piecewise transitioning of a driver to the atomic helpers.
- *
- * RETURNS:
- * Zero on success, error code on failure
- */
-int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
- struct drm_framebuffer *fb,
- int crtc_x, int crtc_y,
- unsigned int crtc_w, unsigned int crtc_h,
- uint32_t src_x, uint32_t src_y,
- uint32_t src_w, uint32_t src_h,
- struct drm_modeset_acquire_ctx *ctx)
-{
- struct drm_plane_state *plane_state;
-
- if (plane->funcs->atomic_duplicate_state)
- plane_state = plane->funcs->atomic_duplicate_state(plane);
- else {
- if (!plane->state)
- drm_atomic_helper_plane_reset(plane);
-
- plane_state = drm_atomic_helper_plane_duplicate_state(plane);
- }
- if (!plane_state)
- return -ENOMEM;
- plane_state->plane = plane;
-
- plane_state->crtc = crtc;
- drm_atomic_set_fb_for_plane(plane_state, fb);
- plane_state->crtc_x = crtc_x;
- plane_state->crtc_y = crtc_y;
- plane_state->crtc_h = crtc_h;
- plane_state->crtc_w = crtc_w;
- plane_state->src_x = src_x;
- plane_state->src_y = src_y;
- plane_state->src_h = src_h;
- plane_state->src_w = src_w;
-
- return drm_plane_helper_commit(plane, plane_state, plane->fb);
-}
-EXPORT_SYMBOL(drm_plane_helper_update);
-
-/**
- * drm_plane_helper_disable() - Transitional helper for plane disable
- * @plane: plane to disable
- * @ctx: lock acquire context, not used here
- *
- * Provides a default plane disable handler using the atomic plane update
- * functions. It is fully left to the driver to check plane constraints and
- * handle corner-cases like a fully occluded or otherwise invisible plane.
- *
- * This is useful for piecewise transitioning of a driver to the atomic helpers.
- *
- * RETURNS:
- * Zero on success, error code on failure
- */
-int drm_plane_helper_disable(struct drm_plane *plane,
- struct drm_modeset_acquire_ctx *ctx)
-{
- struct drm_plane_state *plane_state;
- struct drm_framebuffer *old_fb;
-
- /* crtc helpers love to call disable functions for already disabled hw
- * functions. So cope with that. */
- if (!plane->crtc)
- return 0;
-
- if (plane->funcs->atomic_duplicate_state)
- plane_state = plane->funcs->atomic_duplicate_state(plane);
- else {
- if (!plane->state)
- drm_atomic_helper_plane_reset(plane);
-
- plane_state = drm_atomic_helper_plane_duplicate_state(plane);
- }
- if (!plane_state)
- return -ENOMEM;
- plane_state->plane = plane;
-
- plane_state->crtc = NULL;
- old_fb = plane_state->fb;
- drm_atomic_set_fb_for_plane(plane_state, NULL);
-
- return drm_plane_helper_commit(plane, plane_state, old_fb);
-}
-EXPORT_SYMBOL(drm_plane_helper_disable);
projects / mirror_ubuntu-disco-kernel.git / commitdiff