On Tue, Feb 21, 2017 at 02:51:40PM +0100, Maarten Lankhorst wrote:
> It seems that nouveau requires this, so best to do this in the helper.
> This allows nouveau to use the atomic suspend helper.
Pardon the stupid question, but why can't nouveau just do the right thing when
crtc_state->active becomes false?
Sean
>
> Cc: nouveau@lists.freedesktop.org
> Acked-by: Ben Skeggs <bske...@redhat.com> #irc
> Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
> ---
> drivers/gpu/drm/drm_atomic_helper.c | 51 ++++++++++----
> drivers/gpu/drm/nouveau/nouveau_display.c | 113
> +-----------------------------
> 2 files changed, 38 insertions(+), 126 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c
> b/drivers/gpu/drm/drm_atomic_helper.c
> index 9203f3e933f7..ff361066381e 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -2427,9 +2427,13 @@ int drm_atomic_helper_disable_all(struct drm_device
> *dev,
> struct drm_modeset_acquire_ctx *ctx)
> {
> struct drm_atomic_state *state;
> + struct drm_connector_state *conn_state;
> struct drm_connector *conn;
> - struct drm_connector_list_iter conn_iter;
> - int err;
> + struct drm_plane_state *plane_state;
> + struct drm_plane *plane;
> + struct drm_crtc_state *crtc_state;
> + struct drm_crtc *crtc;
> + int ret, i;
>
> state = drm_atomic_state_alloc(dev);
> if (!state)
> @@ -2437,29 +2441,48 @@ int drm_atomic_helper_disable_all(struct drm_device
> *dev,
>
> state->acquire_ctx = ctx;
>
> - drm_connector_list_iter_get(dev, &conn_iter);
> - drm_for_each_connector_iter(conn, &conn_iter) {
> - struct drm_crtc *crtc = conn->state->crtc;
> - struct drm_crtc_state *crtc_state;
> -
> - if (!crtc || conn->dpms != DRM_MODE_DPMS_ON)
> - continue;
> -
> + drm_for_each_crtc(crtc, dev) {
> crtc_state = drm_atomic_get_crtc_state(state, crtc);
> if (IS_ERR(crtc_state)) {
> - err = PTR_ERR(crtc_state);
> + ret = PTR_ERR(crtc_state);
> goto free;
> }
>
> crtc_state->active = false;
> +
> + ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL);
> + if (ret < 0)
> + goto free;
> +
> + ret = drm_atomic_add_affected_planes(state, crtc);
> + if (ret < 0)
> + goto free;
> +
> + ret = drm_atomic_add_affected_connectors(state, crtc);
> + if (ret < 0)
> + goto free;
> }
>
> - err = drm_atomic_commit(state);
> + for_each_connector_in_state(state, conn, conn_state, i) {
> + ret = drm_atomic_set_crtc_for_connector(conn_state, NULL);
> + if (ret < 0)
> + goto free;
> + }
> +
> + for_each_plane_in_state(state, plane, plane_state, i) {
> + ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
> + if (ret < 0)
> + goto free;
> +
> + drm_atomic_set_fb_for_plane(plane_state, NULL);
> + }
> +
> + ret = drm_atomic_commit(state);
> free:
> - drm_connector_list_iter_put(&conn_iter);
> drm_atomic_state_put(state);
> - return err;
> + return ret;
> }
> +
> EXPORT_SYMBOL(drm_atomic_helper_disable_all);
>
> /**
> diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c
> b/drivers/gpu/drm/nouveau/nouveau_display.c
> index d479aad97cd4..820f44bef0bd 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_display.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_display.c
> @@ -625,117 +625,6 @@ nouveau_display_destroy(struct drm_device *dev)
> kfree(disp);
> }
>
> -static int
> -nouveau_atomic_disable_connector(struct drm_atomic_state *state,
> - struct drm_connector *connector)
> -{
> - struct drm_connector_state *connector_state;
> - struct drm_crtc *crtc;
> - struct drm_crtc_state *crtc_state;
> - struct drm_plane_state *plane_state;
> - struct drm_plane *plane;
> - int ret;
> -
> - if (!(crtc = connector->state->crtc))
> - return 0;
> -
> - connector_state = drm_atomic_get_connector_state(state, connector);
> - if (IS_ERR(connector_state))
> - return PTR_ERR(connector_state);
> -
> - ret = drm_atomic_set_crtc_for_connector(connector_state, NULL);
> - if (ret)
> - return ret;
> -
> - crtc_state = drm_atomic_get_crtc_state(state, crtc);
> - if (IS_ERR(crtc_state))
> - return PTR_ERR(crtc_state);
> -
> - ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
> - if (ret)
> - return ret;
> -
> - crtc_state->active = false;
> -
> - drm_for_each_plane_mask(plane, connector->dev, crtc_state->plane_mask) {
> - plane_state = drm_atomic_get_plane_state(state, plane);
> - if (IS_ERR(plane_state))
> - return PTR_ERR(plane_state);
> -
> - ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
> - if (ret)
> - return ret;
> -
> - drm_atomic_set_fb_for_plane(plane_state, NULL);
> - }
> -
> - return 0;
> -}
> -
> -static int
> -nouveau_atomic_disable(struct drm_device *dev,
> - struct drm_modeset_acquire_ctx *ctx)
> -{
> - struct drm_atomic_state *state;
> - struct drm_connector *connector;
> - int ret;
> -
> - state = drm_atomic_state_alloc(dev);
> - if (!state)
> - return -ENOMEM;
> -
> - state->acquire_ctx = ctx;
> -
> - drm_for_each_connector(connector, dev) {
> - ret = nouveau_atomic_disable_connector(state, connector);
> - if (ret)
> - break;
> - }
> -
> - if (ret == 0)
> - ret = drm_atomic_commit(state);
> - drm_atomic_state_put(state);
> - return ret;
> -}
> -
> -static struct drm_atomic_state *
> -nouveau_atomic_suspend(struct drm_device *dev)
> -{
> - struct drm_modeset_acquire_ctx ctx;
> - struct drm_atomic_state *state;
> - int ret;
> -
> - drm_modeset_acquire_init(&ctx, 0);
> -
> -retry:
> - ret = drm_modeset_lock_all_ctx(dev, &ctx);
> - if (ret < 0) {
> - state = ERR_PTR(ret);
> - goto unlock;
> - }
> -
> - state = drm_atomic_helper_duplicate_state(dev, &ctx);
> - if (IS_ERR(state))
> - goto unlock;
> -
> - ret = nouveau_atomic_disable(dev, &ctx);
> - if (ret < 0) {
> - drm_atomic_state_put(state);
> - state = ERR_PTR(ret);
> - goto unlock;
> - }
> -
> -unlock:
> - if (PTR_ERR(state) == -EDEADLK) {
> - drm_modeset_backoff(&ctx);
> - goto retry;
> - }
> -
> - drm_modeset_drop_locks(&ctx);
> - drm_modeset_acquire_fini(&ctx);
> - return state;
> -}
> -
> int
> nouveau_display_suspend(struct drm_device *dev, bool runtime)
> {
> @@ -744,7 +633,7 @@ nouveau_display_suspend(struct drm_device *dev, bool
> runtime)
>
> if (drm_drv_uses_atomic_modeset(dev)) {
> if (!runtime) {
> - disp->suspend = nouveau_atomic_suspend(dev);
> + disp->suspend = drm_atomic_helper_suspend(dev);
> if (IS_ERR(disp->suspend)) {
> int ret = PTR_ERR(disp->suspend);
> disp->suspend = NULL;
> --
> 2.7.4
>
> _______________________________________________
> Intel-gfx mailing list
> intel-...@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Sean Paul, Software Engineer, Google / Chromium OS
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