linux-kernel - [PATCH 1/9] drm/etnaviv: use new debugfs device-centered functions

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Date:   Mon, 26 Dec 2022 12:50:21 -0300
From:   Maíra Canal <mcanal@...lia.com>
To:     David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     Melissa Wen <mwen@...lia.com>,
        André Almeida <andrealmeid@...lia.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Russell King <linux+etnaviv@...linux.org.uk>,
        Christian Gmeiner <christian.gmeiner@...il.com>,
        etnaviv@...ts.freedesktop.org, noralf@...nnes.org,
        Liviu Dudau <liviu.dudau@....com>,
        Brian Starkey <brian.starkey@....com>,
        Emma Anholt <emma@...olt.net>,
        Alexey Brodkin <abrodkin@...opsys.com>,
        David Airlie <airlied@...hat.com>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Gurchetan Singh <gurchetansingh@...omium.org>,
        Chia-I Wu <olvaffe@...il.com>,
        Tomi Valkeinen <tomba@...nel.org>,
        Maíra Canal <mcanal@...lia.com>
Subject: [PATCH 1/9] drm/etnaviv: use new debugfs device-centered functions

Replace the use of drm_debugfs_create_files() with the new
drm_debugfs_add_files() function, which center the debugfs files
management on the drm_device instead of drm_minor. Moreover, remove the
debugfs_init hook and add the debugfs files directly on etnaviv_bind(),
before drm_dev_register().

Signed-off-by: Maíra Canal <mcanal@...lia.com>
---
 drivers/gpu/drm/etnaviv/etnaviv_drv.c | 29 +++++++++++----------------
 1 file changed, 12 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
index 1d2b4fb4bcf8..2b265460672e 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -191,22 +191,22 @@ static int etnaviv_ring_show(struct etnaviv_gpu *gpu, struct seq_file *m)
 
 static int show_unlocked(struct seq_file *m, void *arg)
 {
-	struct drm_info_node *node = (struct drm_info_node *) m->private;
-	struct drm_device *dev = node->minor->dev;
+	struct drm_debugfs_entry *entry = m->private;
+	struct drm_device *dev = entry->dev;
 	int (*show)(struct drm_device *dev, struct seq_file *m) =
-			node->info_ent->data;
+			entry->file.data;
 
 	return show(dev, m);
 }
 
 static int show_each_gpu(struct seq_file *m, void *arg)
 {
-	struct drm_info_node *node = (struct drm_info_node *) m->private;
-	struct drm_device *dev = node->minor->dev;
+	struct drm_debugfs_entry *entry = m->private;
+	struct drm_device *dev = entry->dev;
 	struct etnaviv_drm_private *priv = dev->dev_private;
 	struct etnaviv_gpu *gpu;
 	int (*show)(struct etnaviv_gpu *gpu, struct seq_file *m) =
-			node->info_ent->data;
+			entry->file.data;
 	unsigned int i;
 	int ret = 0;
 
@@ -223,20 +223,13 @@ static int show_each_gpu(struct seq_file *m, void *arg)
 	return ret;
 }
 
-static struct drm_info_list etnaviv_debugfs_list[] = {
+static struct drm_debugfs_info etnaviv_debugfs_list[] = {
 		{"gpu", show_each_gpu, 0, etnaviv_gpu_debugfs},
 		{"gem", show_unlocked, 0, etnaviv_gem_show},
 		{ "mm", show_unlocked, 0, etnaviv_mm_show },
 		{"mmu", show_each_gpu, 0, etnaviv_mmu_show},
 		{"ring", show_each_gpu, 0, etnaviv_ring_show},
 };
-
-static void etnaviv_debugfs_init(struct drm_minor *minor)
-{
-	drm_debugfs_create_files(etnaviv_debugfs_list,
-				 ARRAY_SIZE(etnaviv_debugfs_list),
-				 minor->debugfs_root, minor);
-}
 #endif
 
 /*
@@ -478,9 +471,6 @@ static const struct drm_driver etnaviv_drm_driver = {
 	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 	.gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table,
 	.gem_prime_mmap     = drm_gem_prime_mmap,
-#ifdef CONFIG_DEBUG_FS
-	.debugfs_init       = etnaviv_debugfs_init,
-#endif
 	.ioctls             = etnaviv_ioctls,
 	.num_ioctls         = DRM_ETNAVIV_NUM_IOCTLS,
 	.fops               = &fops,
@@ -534,6 +524,11 @@ static int etnaviv_bind(struct device *dev)
 
 	load_gpu(drm);
 
+#ifdef CONFIG_DEBUG_FS
+	drm_debugfs_add_files(drm, etnaviv_debugfs_list,
+			      ARRAY_SIZE(etnaviv_debugfs_list));
+#endif
+
 	ret = drm_dev_register(drm, 0);
 	if (ret)
 		goto out_unbind;
-- 
2.38.1