diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/dispnv04/crtc.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/dispnv04/crtc.c | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/dispnv04/crtc.c b/drivers/gpu/drm/nouveau/dispnv04/crtc.c index 6a13ffb53bdb..d4fbf11360fe 100644 --- a/drivers/gpu/drm/nouveau/dispnv04/crtc.c +++ b/drivers/gpu/drm/nouveau/dispnv04/crtc.c @@ -22,6 +22,7 @@ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ +#include <linux/pm_runtime.h> #include <drm/drmP.h> #include <drm/drm_crtc_helper.h> @@ -1034,13 +1035,59 @@ nv04_crtc_cursor_move(struct drm_crtc *crtc, int x, int y) return 0; } +int +nouveau_crtc_set_config(struct drm_mode_set *set) +{ + struct drm_device *dev; + struct nouveau_drm *drm; + int ret; + struct drm_crtc *crtc; + bool active = false; + if (!set || !set->crtc) + return -EINVAL; + + dev = set->crtc->dev; + + /* get a pm reference here */ + ret = pm_runtime_get_sync(dev->dev); + if (ret < 0) + return ret; + + ret = drm_crtc_helper_set_config(set); + + drm = nouveau_drm(dev); + + /* if we get here with no crtcs active then we can drop a reference */ + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + if (crtc->enabled) + active = true; + } + + pm_runtime_mark_last_busy(dev->dev); + /* if we have active crtcs and we don't have a power ref, + take the current one */ + if (active && !drm->have_disp_power_ref) { + drm->have_disp_power_ref = true; + return ret; + } + /* if we have no active crtcs, then drop the power ref + we got before */ + if (!active && drm->have_disp_power_ref) { + pm_runtime_put_autosuspend(dev->dev); + drm->have_disp_power_ref = false; + } + /* drop the power reference we got coming in here */ + pm_runtime_put_autosuspend(dev->dev); + return ret; +} + static const struct drm_crtc_funcs nv04_crtc_funcs = { .save = nv_crtc_save, .restore = nv_crtc_restore, .cursor_set = nv04_crtc_cursor_set, .cursor_move = nv04_crtc_cursor_move, .gamma_set = nv_crtc_gamma_set, - .set_config = drm_crtc_helper_set_config, + .set_config = nouveau_crtc_set_config, .page_flip = nouveau_crtc_page_flip, .destroy = nv_crtc_destroy, }; |