Development vkms_config_debufs in vkms_drv.c for the long term plan of
making vkms configurable and have multiple different instances it's
useful to be able to get at the config of each instance in debugfs
Signed-off-by: Beatriz Martins de Carvalho <martinsdecarvalhobeatriz@xxxxxxxxx>
---
drivers/gpu/drm/vkms/vkms_drv.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c
index 027ffe759440..c81fba6c72f0 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.c
+++ b/drivers/gpu/drm/vkms/vkms_drv.c
@@ -28,6 +28,9 @@
#include "vkms_drv.h"
+#include <drm/drm_print.h>
+#include <drm/drm_debugfs.h>
+
#define DRIVER_NAME "vkms"
#define DRIVER_DESC "Virtual Kernel Mode Setting"
#define DRIVER_DATE "20180514"
@@ -86,12 +89,37 @@ static void vkms_atomic_commit_tail(struct drm_atomic_state *old_state)
drm_atomic_helper_cleanup_planes(dev, old_state);
}
+static int vkms_config_show(struct seq_file *m, void *data)
+{
+ struct drm_info_node *node = (struct drm_info_node *)m->private;
+ struct drm_device *dev = node->minor->dev;
+ struct vkms_device *vkmsdev = drm_device_to_vkms_device(dev);
+
+ seq_printf(m, "writeback=%d\n", vkmsdev->config->writeback);
+ seq_printf(m, "cursor=%d\n", vkmsdev->config->cursor);
+ seq_printf(m, "overlay=%d\n", vkmsdev->config->overlay);
+
+ return 0;
+}
+
+static const struct drm_info_list vkms_config_debugfs_list[] = {
+ { "vkms_config", vkms_config_show, 0 },
+};
+
+static void vkms_config_debugfs_init(struct drm_minor *minor)
+{
+ drm_debugfs_create_files(vkms_config_debugfs_list, ARRAY_SIZE(vkms_config_debugfs_list),
+ minor->debugfs_root, minor);
+}
+
static const struct drm_driver vkms_driver = {
.driver_features = DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_GEM,
.release = vkms_release,
.fops = &vkms_driver_fops,
DRM_GEM_SHMEM_DRIVER_OPS,
+ .debugfs_init = vkms_config_debugfs_init,
+
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
--
2.25.1
