linux-kernel - [PATCH 6/9] drm/virtio: use new debugfs device-centered functions

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Date:   Mon, 26 Dec 2022 12:50:26 -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 6/9] drm/virtio: 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 virtio_gpu_probe(),
before drm_dev_register().

Signed-off-by: Maíra Canal <mcanal@...lia.com>
---
 drivers/gpu/drm/virtio/virtgpu_debugfs.c | 17 +++++++----------
 drivers/gpu/drm/virtio/virtgpu_drv.c     |  5 ++---
 drivers/gpu/drm/virtio/virtgpu_drv.h     |  2 +-
 3 files changed, 10 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_debugfs.c b/drivers/gpu/drm/virtio/virtgpu_debugfs.c
index 853dd9aa397e..91c81b7429cc 100644
--- a/drivers/gpu/drm/virtio/virtgpu_debugfs.c
+++ b/drivers/gpu/drm/virtio/virtgpu_debugfs.c
@@ -68,8 +68,8 @@ static int virtio_gpu_features(struct seq_file *m, void *data)
 static int
 virtio_gpu_debugfs_irq_info(struct seq_file *m, void *data)
 {
-	struct drm_info_node *node = (struct drm_info_node *) m->private;
-	struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
+	struct drm_debugfs_entry *entry = m->private;
+	struct virtio_gpu_device *vgdev = entry->dev->dev_private;
 
 	seq_printf(m, "fence %llu %lld\n",
 		   (u64)atomic64_read(&vgdev->fence_drv.last_fence_id),
@@ -80,8 +80,8 @@ virtio_gpu_debugfs_irq_info(struct seq_file *m, void *data)
 static int
 virtio_gpu_debugfs_host_visible_mm(struct seq_file *m, void *data)
 {
-	struct drm_info_node *node = (struct drm_info_node *)m->private;
-	struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
+	struct drm_debugfs_entry *entry = m->private;
+	struct virtio_gpu_device *vgdev = entry->dev->dev_private;
 	struct drm_printer p;
 
 	if (!vgdev->has_host_visible) {
@@ -94,7 +94,7 @@ virtio_gpu_debugfs_host_visible_mm(struct seq_file *m, void *data)
 	return 0;
 }
 
-static struct drm_info_list virtio_gpu_debugfs_list[] = {
+static struct drm_debugfs_info virtio_gpu_debugfs_list[] = {
 	{ "virtio-gpu-features", virtio_gpu_features },
 	{ "virtio-gpu-irq-fence", virtio_gpu_debugfs_irq_info, 0, NULL },
 	{ "virtio-gpu-host-visible-mm", virtio_gpu_debugfs_host_visible_mm },
@@ -102,10 +102,7 @@ static struct drm_info_list virtio_gpu_debugfs_list[] = {
 
 #define VIRTIO_GPU_DEBUGFS_ENTRIES ARRAY_SIZE(virtio_gpu_debugfs_list)
 
-void
-virtio_gpu_debugfs_init(struct drm_minor *minor)
+void virtio_gpu_debugfs_init(struct drm_device *drm)
 {
-	drm_debugfs_create_files(virtio_gpu_debugfs_list,
-				 VIRTIO_GPU_DEBUGFS_ENTRIES,
-				 minor->debugfs_root, minor);
+	drm_debugfs_add_files(drm, virtio_gpu_debugfs_list, VIRTIO_GPU_DEBUGFS_ENTRIES);
 }
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c
index ae97b98750b6..83aa77e5893b 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.c
@@ -98,6 +98,8 @@ static int virtio_gpu_probe(struct virtio_device *vdev)
 	if (ret)
 		goto err_free;
 
+	virtio_gpu_debugfs_init(dev);
+
 	ret = drm_dev_register(dev, 0);
 	if (ret)
 		goto err_deinit;
@@ -179,9 +181,6 @@ static const struct drm_driver driver = {
 	.dumb_create = virtio_gpu_mode_dumb_create,
 	.dumb_map_offset = virtio_gpu_mode_dumb_mmap,
 
-#if defined(CONFIG_DEBUG_FS)
-	.debugfs_init = virtio_gpu_debugfs_init,
-#endif
 	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 	.gem_prime_mmap = drm_gem_prime_mmap,
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index b7a64c7dcc2c..663d405ccacd 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -469,7 +469,7 @@ struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
 	struct sg_table *sgt);
 
 /* virtgpu_debugfs.c */
-void virtio_gpu_debugfs_init(struct drm_minor *minor);
+void virtio_gpu_debugfs_init(struct drm_device *drm);
 
 /* virtgpu_vram.c */
 bool virtio_gpu_is_vram(struct virtio_gpu_object *bo);
-- 
2.38.1