drm: Add acquire ctx parameter to ->set_config

Surprisingly a lot of legacy drivers roll their own, for
runtime pm and because vmwgfx.

Also make nouveau's set_config static while at it.

Cc: Sinclair Yeh <syeh@vmware.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-19-daniel.vetter@ffwll.ch

drivers/gpu/drm/amd/amdgpu/amdgpu_display.c

@@ -333,7 +333,8 @@ int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
 	return 0;
 }
 
-int amdgpu_crtc_set_config(struct drm_mode_set *set)
+int amdgpu_crtc_set_config(struct drm_mode_set *set,
+			   struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev;
 	struct amdgpu_device *adev;
@@ -350,7 +351,7 @@ int amdgpu_crtc_set_config(struct drm_mode_set *set)
 	if (ret < 0)
 		return ret;
 
-	ret = drm_crtc_helper_set_config(set);
+	ret = drm_crtc_helper_set_config(set, ctx);
 
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 		if (crtc->enabled)

drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h

@@ -590,7 +590,8 @@ int amdgpu_align_pitch(struct amdgpu_device *adev, int width, int bpp, bool tile
 /* amdgpu_display.c */
 void amdgpu_print_display_setup(struct drm_device *dev);
 int amdgpu_modeset_create_props(struct amdgpu_device *adev);
-int amdgpu_crtc_set_config(struct drm_mode_set *set);
+int amdgpu_crtc_set_config(struct drm_mode_set *set,
+			   struct drm_modeset_acquire_ctx *ctx);
 int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
 				 struct drm_framebuffer *fb,
 				 struct drm_pending_vblank_event *event,

drivers/gpu/drm/drm_atomic_helper.c

@@ -2265,6 +2265,7 @@ static int update_output_state(struct drm_atomic_state *state,
 /**
  * drm_atomic_helper_set_config - set a new config from userspace
  * @set: mode set configuration
+ * @ctx: lock acquisition context
  *
  * Provides a default crtc set_config handler using the atomic driver interface.
  *
@@ -2277,7 +2278,8 @@ static int update_output_state(struct drm_atomic_state *state,
  * Returns:
  * Returns 0 on success, negative errno numbers on failure.
  */
-int drm_atomic_helper_set_config(struct drm_mode_set *set)
+int drm_atomic_helper_set_config(struct drm_mode_set *set,
+				 struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_atomic_state *state;
 	struct drm_crtc *crtc = set->crtc;

drivers/gpu/drm/drm_crtc.c

@@ -465,7 +465,7 @@ static int __drm_mode_set_config_internal(struct drm_mode_set *set,
 
 	fb = set->fb;
 
-	ret = crtc->funcs->set_config(set);
+	ret = crtc->funcs->set_config(set, ctx);
 	if (ret == 0) {
 		crtc->primary->crtc = crtc;
 		crtc->primary->fb = fb;

drivers/gpu/drm/drm_crtc_helper.c

@@ -476,6 +476,7 @@ drm_crtc_helper_disable(struct drm_crtc *crtc)
 /**
  * drm_crtc_helper_set_config - set a new config from userspace
  * @set: mode set configuration
+ * @ctx: lock acquire context, not used here
  *
  * The drm_crtc_helper_set_config() helper function implements the of
  * &drm_crtc_funcs.set_config callback for drivers using the legacy CRTC
@@ -510,7 +511,8 @@ drm_crtc_helper_disable(struct drm_crtc *crtc)
  * Returns:
  * Returns 0 on success, negative errno numbers on failure.
  */
-int drm_crtc_helper_set_config(struct drm_mode_set *set)
+int drm_crtc_helper_set_config(struct drm_mode_set *set,
+			       struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev;
 	struct drm_crtc **save_encoder_crtcs, *new_crtc;

drivers/gpu/drm/drm_plane_helper.c

@@ -371,7 +371,7 @@ int drm_primary_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
 	 * drm_mode_setplane() already handles the basic refcounting for the
 	 * framebuffers involved in this operation.
 	 */
-	ret = crtc->funcs->set_config(&set);
+	ret = crtc->funcs->set_config(&set, ctx);
 
 	kfree(connector_list);
 	return ret;

drivers/gpu/drm/gma500/gma_display.c

@@ -514,17 +514,18 @@ void gma_crtc_destroy(struct drm_crtc *crtc)
 	kfree(gma_crtc);
 }
 
-int gma_crtc_set_config(struct drm_mode_set *set)
+int gma_crtc_set_config(struct drm_mode_set *set,
+			struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev = set->crtc->dev;
 	struct drm_psb_private *dev_priv = dev->dev_private;
 	int ret;
 
 	if (!dev_priv->rpm_enabled)
-		return drm_crtc_helper_set_config(set);
+		return drm_crtc_helper_set_config(set, ctx);
 
 	pm_runtime_forbid(&dev->pdev->dev);
-	ret = drm_crtc_helper_set_config(set);
+	ret = drm_crtc_helper_set_config(set, ctx);
 	pm_runtime_allow(&dev->pdev->dev);
 
 	return ret;

drivers/gpu/drm/gma500/gma_display.h

@@ -79,7 +79,8 @@ extern void gma_crtc_prepare(struct drm_crtc *crtc);
 extern void gma_crtc_commit(struct drm_crtc *crtc);
 extern void gma_crtc_disable(struct drm_crtc *crtc);
 extern void gma_crtc_destroy(struct drm_crtc *crtc);
-extern int gma_crtc_set_config(struct drm_mode_set *set);
+extern int gma_crtc_set_config(struct drm_mode_set *set,
+			       struct drm_modeset_acquire_ctx *ctx);
 
 extern void gma_crtc_save(struct drm_crtc *crtc);
 extern void gma_crtc_restore(struct drm_crtc *crtc);

drivers/gpu/drm/nouveau/dispnv04/crtc.c

@@ -1031,8 +1031,9 @@ nv04_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
 	return 0;
 }
 
-int
-nouveau_crtc_set_config(struct drm_mode_set *set)
+static int
+nouveau_crtc_set_config(struct drm_mode_set *set,
+			struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev;
 	struct nouveau_drm *drm;
@@ -1049,7 +1050,7 @@ nouveau_crtc_set_config(struct drm_mode_set *set)
 	if (ret < 0 && ret != -EACCES)
 		return ret;
 
-	ret = drm_crtc_helper_set_config(set);
+	ret = drm_crtc_helper_set_config(set, ctx);
 
 	drm = nouveau_drm(dev);
 

drivers/gpu/drm/nouveau/nouveau_display.h

@@ -88,7 +88,6 @@ int  nouveau_display_dumb_map_offset(struct drm_file *, struct drm_device *,
 
 void nouveau_hdmi_mode_set(struct drm_encoder *, struct drm_display_mode *);
 
-int nouveau_crtc_set_config(struct drm_mode_set *set);
 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
 extern int nouveau_backlight_init(struct drm_device *);
 extern void nouveau_backlight_exit(struct drm_device *);

drivers/gpu/drm/radeon/radeon_display.c

@@ -624,7 +624,8 @@ cleanup:
 }
 
 static int
-radeon_crtc_set_config(struct drm_mode_set *set)
+radeon_crtc_set_config(struct drm_mode_set *set,
+		       struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev;
 	struct radeon_device *rdev;
@@ -641,7 +642,7 @@ radeon_crtc_set_config(struct drm_mode_set *set)
 	if (ret < 0)
 		return ret;
 
-	ret = drm_crtc_helper_set_config(set);
+	ret = drm_crtc_helper_set_config(set, ctx);
 
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 		if (crtc->enabled)

drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c

@@ -208,7 +208,8 @@ static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
 	return 0;
 }
 
-static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
+static int vmw_ldu_crtc_set_config(struct drm_mode_set *set,
+				   struct drm_modeset_acquire_ctx *ctx)
 {
 	struct vmw_private *dev_priv;
 	struct vmw_legacy_display_unit *ldu;

drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c

@@ -248,7 +248,8 @@ static int vmw_sou_backing_alloc(struct vmw_private *dev_priv,
 	return ret;
 }
 
-static int vmw_sou_crtc_set_config(struct drm_mode_set *set)
+static int vmw_sou_crtc_set_config(struct drm_mode_set *set,
+				   struct drm_modeset_acquire_ctx *ctx)
 {
 	struct vmw_private *dev_priv;
 	struct vmw_screen_object_unit *sou;

drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c

@@ -509,7 +509,8 @@ out_srf_unref:
  * RETURNS:
  * 0 on success, error code otherwise
  */
-static int vmw_stdu_crtc_set_config(struct drm_mode_set *set)
+static int vmw_stdu_crtc_set_config(struct drm_mode_set *set,
+				    struct drm_modeset_acquire_ctx *ctx)
 {
 	struct vmw_private *dev_priv;
 	struct vmw_framebuffer *vfb;

include/drm/drm_atomic_helper.h

@@ -100,7 +100,8 @@ int drm_atomic_helper_disable_plane(struct drm_plane *plane,
 				    struct drm_modeset_acquire_ctx *ctx);
 int __drm_atomic_helper_disable_plane(struct drm_plane *plane,
 		struct drm_plane_state *plane_state);
-int drm_atomic_helper_set_config(struct drm_mode_set *set);
+int drm_atomic_helper_set_config(struct drm_mode_set *set,
+				 struct drm_modeset_acquire_ctx *ctx);
 int __drm_atomic_helper_set_config(struct drm_mode_set *set,
 		struct drm_atomic_state *state);
 

include/drm/drm_crtc.h

@@ -347,7 +347,8 @@ struct drm_crtc_funcs {
 	 *
 	 * 0 on success or a negative error code on failure.
 	 */
-	int (*set_config)(struct drm_mode_set *set);
+	int (*set_config)(struct drm_mode_set *set,
+			  struct drm_modeset_acquire_ctx *ctx);
 
 	/**
 	 * @page_flip:

include/drm/drm_crtc_helper.h

@@ -44,7 +44,8 @@
 #include <drm/drm_modeset_helper.h>
 
 void drm_helper_disable_unused_functions(struct drm_device *dev);
-int drm_crtc_helper_set_config(struct drm_mode_set *set);
+int drm_crtc_helper_set_config(struct drm_mode_set *set,
+			       struct drm_modeset_acquire_ctx *ctx);
 bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
 			      struct drm_display_mode *mode,
 			      int x, int y,