disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/gpu/drm/gma500/gma_display.c
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@@ -1,30 +1,24 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright © 2006-2011 Intel Corporation
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms and conditions of the GNU General Public License,
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- * version 2, as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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- * more details.
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- *
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- * You should have received a copy of the GNU General Public License along with
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- * this program; if not, write to the Free Software Foundation, Inc.,
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- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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  *
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  * Authors:
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  *	Eric Anholt <eric@anholt.net>
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  *	Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
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  */
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9
 
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-#include <drm/drmP.h>
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+#include <linux/delay.h>
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+#include <linux/highmem.h>
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+
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+#include <drm/drm_crtc.h>
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+#include <drm/drm_fourcc.h>
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+#include <drm/drm_vblank.h>
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+
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+#include "framebuffer.h"
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 #include "gma_display.h"
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+#include "psb_drv.h"
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 #include "psb_intel_drv.h"
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 #include "psb_intel_reg.h"
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-#include "psb_drv.h"
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-#include "framebuffer.h"
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22
 
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 /**
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  * Returns whether any output on the specified pipe is of the specified type
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@@ -261,6 +255,8 @@
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 		/* Give the overlay scaler a chance to enable
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 		 * if it's on this pipe */
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 		/* psb_intel_crtc_dpms_video(crtc, true); TODO */
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+
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+		drm_crtc_vblank_on(crtc);
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 		break;
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 	case DRM_MODE_DPMS_OFF:
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 		if (!gma_crtc->active)
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@@ -355,7 +351,7 @@
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 			gt = container_of(gma_crtc->cursor_obj,
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 					  struct gtt_range, gem);
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 			psb_gtt_unpin(gt);
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-			drm_gem_object_put_unlocked(gma_crtc->cursor_obj);
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+			drm_gem_object_put(gma_crtc->cursor_obj);
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 			gma_crtc->cursor_obj = NULL;
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 		}
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 		return 0;
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@@ -431,7 +427,7 @@
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 	if (gma_crtc->cursor_obj) {
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 		gt = container_of(gma_crtc->cursor_obj, struct gtt_range, gem);
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 		psb_gtt_unpin(gt);
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-		drm_gem_object_put_unlocked(gma_crtc->cursor_obj);
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+		drm_gem_object_put(gma_crtc->cursor_obj);
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 	}
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 	gma_crtc->cursor_obj = obj;
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@@ -439,7 +435,7 @@
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 	return ret;
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436
 
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 unref_cursor:
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-	drm_gem_object_put_unlocked(obj);
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+	drm_gem_object_put(obj);
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 	return ret;
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 }
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..
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@@ -507,6 +503,55 @@
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 	kfree(gma_crtc);
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 }
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505
 
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+int gma_crtc_page_flip(struct drm_crtc *crtc,
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+		       struct drm_framebuffer *fb,
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+		       struct drm_pending_vblank_event *event,
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+		       uint32_t page_flip_flags,
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+		       struct drm_modeset_acquire_ctx *ctx)
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+{
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+	struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
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+	struct drm_framebuffer *current_fb = crtc->primary->fb;
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+	struct drm_framebuffer *old_fb = crtc->primary->old_fb;
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+	const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
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+	struct drm_device *dev = crtc->dev;
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+	unsigned long flags;
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+	int ret;
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+
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+	if (!crtc_funcs->mode_set_base)
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+		return -EINVAL;
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+
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+	/* Using mode_set_base requires the new fb to be set already. */
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+	crtc->primary->fb = fb;
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+
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+	if (event) {
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+		spin_lock_irqsave(&dev->event_lock, flags);
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+
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+		WARN_ON(drm_crtc_vblank_get(crtc) != 0);
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+
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+		gma_crtc->page_flip_event = event;
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+		spin_unlock_irqrestore(&dev->event_lock, flags);
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+
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+		/* Call this locked if we want an event at vblank interrupt. */
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+		ret = crtc_funcs->mode_set_base(crtc, crtc->x, crtc->y, old_fb);
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+		if (ret) {
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+			spin_lock_irqsave(&dev->event_lock, flags);
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+			if (gma_crtc->page_flip_event) {
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+				gma_crtc->page_flip_event = NULL;
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+				drm_crtc_vblank_put(crtc);
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+			}
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+			spin_unlock_irqrestore(&dev->event_lock, flags);
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+		}
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+	} else {
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+		ret = crtc_funcs->mode_set_base(crtc, crtc->x, crtc->y, old_fb);
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+	}
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+
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+	/* Restore previous fb in case of failure. */
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+	if (ret)
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+		crtc->primary->fb = current_fb;
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+
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+	return ret;
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+}
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+
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 int gma_crtc_set_config(struct drm_mode_set *set,
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 			struct drm_modeset_acquire_ctx *ctx)
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 {