disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/gpu/drm/sun4i/sun4i_drv.c
..
..
@@ -1,26 +1,26 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Copyright (C) 2015 Free Electrons
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  * Copyright (C) 2015 NextThing Co
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  *
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  * Maxime Ripard <maxime.ripard@free-electrons.com>
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License as
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- * published by the Free Software Foundation; either version 2 of
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- * the License, or (at your option) any later version.
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7
  */
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8
 
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 #include <linux/component.h>
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10
 #include <linux/kfifo.h>
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+#include <linux/module.h>
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12
 #include <linux/of_graph.h>
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13
 #include <linux/of_reserved_mem.h>
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+#include <linux/platform_device.h>
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15
 
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-#include <drm/drmP.h>
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-#include <drm/drm_crtc_helper.h>
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+#include <drm/drm_atomic_helper.h>
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+#include <drm/drm_drv.h>
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 #include <drm/drm_fb_cma_helper.h>
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-#include <drm/drm_gem_cma_helper.h>
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19
 #include <drm/drm_fb_helper.h>
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+#include <drm/drm_gem_cma_helper.h>
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 #include <drm/drm_of.h>
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+#include <drm/drm_probe_helper.h>
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+#include <drm/drm_vblank.h>
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24
 
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 #include "sun4i_drv.h"
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 #include "sun4i_frontend.h"
..
..
@@ -28,13 +28,22 @@
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 #include "sun4i_tcon.h"
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 #include "sun8i_tcon_top.h"
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30
 
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+static int drm_sun4i_gem_dumb_create(struct drm_file *file_priv,
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+				     struct drm_device *drm,
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+				     struct drm_mode_create_dumb *args)
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+{
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+	/* The hardware only allows even pitches for YUV buffers. */
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+	args->pitch = ALIGN(DIV_ROUND_UP(args->width * args->bpp, 8), 2);
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+
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+	return drm_gem_cma_dumb_create_internal(file_priv, drm, args);
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+}
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+
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 DEFINE_DRM_GEM_CMA_FOPS(sun4i_drv_fops);
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42
 
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 static struct drm_driver sun4i_drv_driver = {
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-	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC,
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+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
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45
 
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 	/* Generic Operations */
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-	.lastclose		= drm_fb_helper_lastclose,
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 	.fops			= &sun4i_drv_fops,
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 	.name			= "sun4i-drm",
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 	.desc			= "Allwinner sun4i Display Engine",
..
..
@@ -43,39 +52,8 @@
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 	.minor			= 0,
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 	/* GEM Operations */
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-	.dumb_create		= drm_gem_cma_dumb_create,
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-	.gem_free_object_unlocked = drm_gem_cma_free_object,
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-	.gem_vm_ops		= &drm_gem_cma_vm_ops,
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-
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-	/* PRIME Operations */
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-	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
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-	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
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-	.gem_prime_import	= drm_gem_prime_import,
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-	.gem_prime_export	= drm_gem_prime_export,
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-	.gem_prime_get_sg_table	= drm_gem_cma_prime_get_sg_table,
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-	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
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-	.gem_prime_vmap		= drm_gem_cma_prime_vmap,
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-	.gem_prime_vunmap	= drm_gem_cma_prime_vunmap,
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-	.gem_prime_mmap		= drm_gem_cma_prime_mmap,
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-
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-	/* Frame Buffer Operations */
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+	DRM_GEM_CMA_DRIVER_OPS_VMAP_WITH_DUMB_CREATE(drm_sun4i_gem_dumb_create),
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 };
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-
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-static void sun4i_remove_framebuffers(void)
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-{
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-	struct apertures_struct *ap;
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-
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-	ap = alloc_apertures(1);
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-	if (!ap)
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-		return;
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-
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-	/* The framebuffer can be located anywhere in RAM */
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-	ap->ranges[0].base = 0;
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-	ap->ranges[0].size = ~0;
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-
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-	drm_fb_helper_remove_conflicting_framebuffers(ap, "sun4i-drm-fb", false);
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-	kfree(ap);
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-}
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 static int sun4i_drv_bind(struct device *dev)
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 {
..
..
@@ -93,7 +71,6 @@
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 		goto free_drm;
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 	}
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-	dev_set_drvdata(dev, drm);
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 	drm->dev_private = drv;
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 	INIT_LIST_HEAD(&drv->frontend_list);
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 	INIT_LIST_HEAD(&drv->engine_list);
..
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@@ -116,19 +93,14 @@
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 	/* drm_vblank_init calls kcalloc, which can fail */
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 	ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
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 	if (ret)
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-		goto cleanup_mode_config;
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+		goto unbind_all;
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 	drm->irq_enabled = true;
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 	/* Remove early framebuffers (ie. simplefb) */
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-	sun4i_remove_framebuffers();
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+	drm_fb_helper_remove_conflicting_framebuffers(NULL, "sun4i-drm-fb", false);
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-	/* Create our framebuffer */
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-	ret = sun4i_framebuffer_init(drm);
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-	if (ret) {
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-		dev_err(drm->dev, "Couldn't create our framebuffer\n");
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-		goto cleanup_mode_config;
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-	}
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+	sun4i_framebuffer_init(drm);
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 	/* Enable connectors polling */
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 	drm_kms_helper_poll_init(drm);
..
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@@ -137,11 +109,16 @@
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 	if (ret)
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 		goto finish_poll;
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+	drm_fbdev_generic_setup(drm, 32);
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+
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+	dev_set_drvdata(dev, drm);
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+
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 	return 0;
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 finish_poll:
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 	drm_kms_helper_poll_fini(drm);
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-	sun4i_framebuffer_free(drm);
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+unbind_all:
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+	component_unbind_all(dev, NULL);
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 cleanup_mode_config:
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 	drm_mode_config_cleanup(drm);
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 	of_reserved_mem_device_release(dev);
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@@ -154,9 +131,10 @@
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 {
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 	struct drm_device *drm = dev_get_drvdata(dev);
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133
 
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+	dev_set_drvdata(dev, NULL);
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 	drm_dev_unregister(drm);
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 	drm_kms_helper_poll_fini(drm);
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-	sun4i_framebuffer_free(drm);
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+	drm_atomic_helper_shutdown(drm);
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 	drm_mode_config_cleanup(drm);
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 	component_unbind_all(dev, NULL);
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@@ -181,6 +159,7 @@
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 		of_device_is_compatible(node, "allwinner,sun5i-a13-display-frontend") ||
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 		of_device_is_compatible(node, "allwinner,sun6i-a31-display-frontend") ||
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 		of_device_is_compatible(node, "allwinner,sun7i-a20-display-frontend") ||
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+		of_device_is_compatible(node, "allwinner,sun8i-a23-display-frontend") ||
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 		of_device_is_compatible(node, "allwinner,sun8i-a33-display-frontend") ||
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 		of_device_is_compatible(node, "allwinner,sun9i-a80-display-frontend");
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 }
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@@ -369,6 +348,27 @@
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 	return count;
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 }
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350
 
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+#ifdef CONFIG_PM_SLEEP
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+static int sun4i_drv_drm_sys_suspend(struct device *dev)
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+{
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+	struct drm_device *drm = dev_get_drvdata(dev);
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+
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+	return drm_mode_config_helper_suspend(drm);
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+}
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+
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+static int sun4i_drv_drm_sys_resume(struct device *dev)
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+{
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+	struct drm_device *drm = dev_get_drvdata(dev);
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+
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+	return drm_mode_config_helper_resume(drm);
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+}
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+#endif
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+
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+static const struct dev_pm_ops sun4i_drv_drm_pm_ops = {
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+	SET_SYSTEM_SLEEP_PM_OPS(sun4i_drv_drm_sys_suspend,
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+				sun4i_drv_drm_sys_resume)
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+};
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+
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 static int sun4i_drv_probe(struct platform_device *pdev)
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 {
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 	struct component_match *match = NULL;
..
..
@@ -422,11 +422,15 @@
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 	{ .compatible = "allwinner,sun6i-a31-display-engine" },
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 	{ .compatible = "allwinner,sun6i-a31s-display-engine" },
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 	{ .compatible = "allwinner,sun7i-a20-display-engine" },
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+	{ .compatible = "allwinner,sun8i-a23-display-engine" },
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 	{ .compatible = "allwinner,sun8i-a33-display-engine" },
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 	{ .compatible = "allwinner,sun8i-a83t-display-engine" },
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 	{ .compatible = "allwinner,sun8i-h3-display-engine" },
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+	{ .compatible = "allwinner,sun8i-r40-display-engine" },
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 	{ .compatible = "allwinner,sun8i-v3s-display-engine" },
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 	{ .compatible = "allwinner,sun9i-a80-display-engine" },
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+	{ .compatible = "allwinner,sun50i-a64-display-engine" },
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+	{ .compatible = "allwinner,sun50i-h6-display-engine" },
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 	{ }
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 };
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 MODULE_DEVICE_TABLE(of, sun4i_drv_of_table);
..
..
@@ -437,6 +441,7 @@
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 	.driver		= {
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 		.name		= "sun4i-drm",
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 		.of_match_table	= sun4i_drv_of_table,
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+		.pm = &sun4i_drv_drm_pm_ops,
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 	},
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 };
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 module_platform_driver(sun4i_drv_platform_driver);