drm/mgag200: Reorganize before dropping simple-KMS helpers

Move around some modesetting code before dropping simple-KMS helpers.
Makes the next patch more readable. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728124103.30159-7-tzimmermann@suse.de

Author: tdz

drivers/gpu/drm/mgag200/mgag200_mode.c

@@ -603,42 +603,31 @@ static void mgag200_disable_display(struct mga_device *mdev)
 	WREG_ECRT(0x01, crtcext1);
 }
 
-/*
- * Connector
- */
-
-static int mgag200_vga_connector_helper_get_modes(struct drm_connector *connector)
+static void mgag200_handle_damage(struct mga_device *mdev, const struct iosys_map *vmap,
+				  struct drm_framebuffer *fb, const struct drm_rect *clip)
 {
-	struct mga_device *mdev = to_mga_device(connector->dev);
-	int ret;
-
-	/*
-	 * Protect access to I/O registers from concurrent modesetting
-	 * by acquiring the I/O-register lock.
-	 */
-	mutex_lock(&mdev->rmmio_lock);
-	ret = drm_connector_helper_get_modes_from_ddc(connector);
-	mutex_unlock(&mdev->rmmio_lock);
+	void __iomem *dst = mdev->vram;
+	void *vaddr = vmap[0].vaddr; /* TODO: Use mapping abstraction properly */
 
-	return ret;
+	dst += drm_fb_clip_offset(fb->pitches[0], fb->format, clip);
+	drm_fb_memcpy_toio(dst, fb->pitches[0], vaddr, fb, clip);
 }
 
-static const struct drm_connector_helper_funcs mga_vga_connector_helper_funcs = {
-	.get_modes  = mgag200_vga_connector_helper_get_modes,
-};
-
-static const struct drm_connector_funcs mga_vga_connector_funcs = {
-	.reset                  = drm_atomic_helper_connector_reset,
-	.fill_modes             = drm_helper_probe_single_connector_modes,
-	.destroy                = drm_connector_cleanup,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state   = drm_atomic_helper_connector_destroy_state,
-};
-
 /*
  * Simple Display Pipe
  */
 
+static const uint32_t mgag200_simple_display_pipe_formats[] = {
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_RGB888,
+};
+
+static const uint64_t mgag200_simple_display_pipe_fmtmods[] = {
+	DRM_FORMAT_MOD_LINEAR,
+	DRM_FORMAT_MOD_INVALID
+};
+
 static enum drm_mode_status
 mgag200_simple_display_pipe_mode_valid(struct drm_simple_display_pipe *pipe,
 				       const struct drm_display_mode *mode)
@@ -670,17 +659,6 @@ mgag200_simple_display_pipe_mode_valid(struct drm_simple_display_pipe *pipe,
 	return MODE_OK;
 }
 
-static void
-mgag200_handle_damage(struct mga_device *mdev, struct drm_framebuffer *fb,
-		      struct drm_rect *clip, const struct iosys_map *map)
-{
-	void __iomem *dst = mdev->vram;
-	void *vmap = map->vaddr; /* TODO: Use mapping abstraction properly */
-
-	dst += drm_fb_clip_offset(fb->pitches[0], fb->format, clip);
-	drm_fb_memcpy_toio(dst, fb->pitches[0], vmap, fb, clip);
-}
-
 static void
 mgag200_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe,
 				   struct drm_crtc_state *crtc_state,
@@ -728,7 +706,7 @@ mgag200_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe,
 
 	mgag200_enable_display(mdev);
 
-	mgag200_handle_damage(mdev, fb, &fullscreen, &shadow_plane_state->data[0]);
+	mgag200_handle_damage(mdev, shadow_plane_state->data, fb, &fullscreen);
 
 	/* Always scanout image at VRAM offset 0 */
 	mgag200_set_startadd(mdev, (u32)0);
@@ -809,7 +787,7 @@ mgag200_simple_display_pipe_update(struct drm_simple_display_pipe *pipe,
 
 	drm_atomic_helper_damage_iter_init(&iter, old_state, state);
 	drm_atomic_for_each_plane_damage(&iter, &damage) {
-		mgag200_handle_damage(mdev, fb, &damage, &shadow_plane_state->data[0]);
+		mgag200_handle_damage(mdev, shadow_plane_state->data, fb, &damage);
 	}
 	/* Always scanout image at VRAM offset 0 */
 	mgag200_set_startadd(mdev, (u32)0);
@@ -877,15 +855,36 @@ mgag200_simple_display_pipe_funcs = {
 	DRM_GEM_SIMPLE_DISPLAY_PIPE_SHADOW_PLANE_FUNCS,
 };
 
-static const uint32_t mgag200_simple_display_pipe_formats[] = {
-	DRM_FORMAT_XRGB8888,
-	DRM_FORMAT_RGB565,
-	DRM_FORMAT_RGB888,
+/*
+ * Connector
+ */
+
+static int mgag200_vga_connector_helper_get_modes(struct drm_connector *connector)
+{
+	struct mga_device *mdev = to_mga_device(connector->dev);
+	int ret;
+
+	/*
+	 * Protect access to I/O registers from concurrent modesetting
+	 * by acquiring the I/O-register lock.
+	 */
+	mutex_lock(&mdev->rmmio_lock);
+	ret = drm_connector_helper_get_modes_from_ddc(connector);
+	mutex_unlock(&mdev->rmmio_lock);
+
+	return ret;
+}
+
+static const struct drm_connector_helper_funcs mga_vga_connector_helper_funcs = {
+	.get_modes  = mgag200_vga_connector_helper_get_modes,
 };
 
-static const uint64_t mgag200_simple_display_pipe_fmtmods[] = {
-	DRM_FORMAT_MOD_LINEAR,
-	DRM_FORMAT_MOD_INVALID
+static const struct drm_connector_funcs mga_vga_connector_funcs = {
+	.reset                  = drm_atomic_helper_connector_reset,
+	.fill_modes             = drm_helper_probe_single_connector_modes,
+	.destroy                = drm_connector_cleanup,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state   = drm_atomic_helper_connector_destroy_state,
 };
 
 /*