[RFC v4 04/25] drm/fb-helper: Remove drm_fb_helper_debug_enter/leave()

[Noralf Trønnes]

Atomic drivers can't use them so finish what was started in
commit 9c79e0b1d096 ("drm/fb-helper: Give up on kgdb for atomic drivers").

This prepares the ground for creating modesets on demand.

TODO:
- Actually remove the functions, not just the contents.
- Nuke drm_crtc_helper_funcs->mode_set_base_atomic
- Documentation/dev-tools/kgdb.rst

Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
---
 drivers/gpu/drm/drm_fb_helper.c | 82 -----------------------------------------
 1 file changed, 82 deletions(-)

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index e48ace2d55f5..06e94de6452a 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -267,96 +267,14 @@ int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
 }
 EXPORT_SYMBOL(drm_fb_helper_remove_one_connector);
 
-static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc)
-{
-	uint16_t *r_base, *g_base, *b_base;
-
-	if (crtc->funcs->gamma_set == NULL)
-		return;
-
-	r_base = crtc->gamma_store;
-	g_base = r_base + crtc->gamma_size;
-	b_base = g_base + crtc->gamma_size;
-
-	crtc->funcs->gamma_set(crtc, r_base, g_base, b_base,
-			       crtc->gamma_size, NULL);
-}
-
-/**
- * drm_fb_helper_debug_enter - implementation for &fb_ops.fb_debug_enter
- * @info: fbdev registered by the helper
- */
 int drm_fb_helper_debug_enter(struct fb_info *info)
 {
-	struct drm_fb_helper *helper = info->par;
-	const struct drm_crtc_helper_funcs *funcs;
-	int i;
-
-	list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) {
-		for (i = 0; i < helper->crtc_count; i++) {
-			struct drm_mode_set *mode_set =
-				&helper->crtc_info[i].mode_set;
-
-			if (!mode_set->crtc->enabled)
-				continue;
-
-			funcs =	mode_set->crtc->helper_private;
-			if (funcs->mode_set_base_atomic == NULL)
-				continue;
-
-			if (drm_drv_uses_atomic_modeset(mode_set->crtc->dev))
-				continue;
-
-			funcs->mode_set_base_atomic(mode_set->crtc,
-						    mode_set->fb,
-						    mode_set->x,
-						    mode_set->y,
-						    ENTER_ATOMIC_MODE_SET);
-		}
-	}
-
 	return 0;
 }
 EXPORT_SYMBOL(drm_fb_helper_debug_enter);
 
-/**
- * drm_fb_helper_debug_leave - implementation for &fb_ops.fb_debug_leave
- * @info: fbdev registered by the helper
- */
 int drm_fb_helper_debug_leave(struct fb_info *info)
 {
-	struct drm_fb_helper *helper = info->par;
-	struct drm_crtc *crtc;
-	const struct drm_crtc_helper_funcs *funcs;
-	struct drm_framebuffer *fb;
-	int i;
-
-	for (i = 0; i < helper->crtc_count; i++) {
-		struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set;
-
-		crtc = mode_set->crtc;
-		if (drm_drv_uses_atomic_modeset(crtc->dev))
-			continue;
-
-		funcs = crtc->helper_private;
-		fb = crtc->primary->fb;
-
-		if (!crtc->enabled)
-			continue;
-
-		if (!fb) {
-			DRM_ERROR("no fb to restore??\n");
-			continue;
-		}
-
-		if (funcs->mode_set_base_atomic == NULL)
-			continue;
-
-		drm_fb_helper_restore_lut_atomic(mode_set->crtc);
-		funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x,
-					    crtc->y, LEAVE_ATOMIC_MODE_SET);
-	}
-
 	return 0;
 }
 EXPORT_SYMBOL(drm_fb_helper_debug_leave);
-- 
2.15.1