Merge v5.0-rc7 into drm-next

[thirdparty/linux.git] / drivers / gpu / drm / amd / display / amdgpu_dm / amdgpu_dm_debugfs.c

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index ddd75a4d8ba5d4e19b0bc32c4fac813b43c91056..4a55cde027cf62f65fa91a943e631572f6bfae71 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -803,6 +803,45 @@ static ssize_t dtn_log_write(
        return size;
 }
 
+/*
+ * Backlight at this moment.  Read only.
+ * As written to display, taking ABM and backlight lut into account.
+ * Ranges from 0x0 to 0x10000 (= 100% PWM)
+ */
+static int current_backlight_read(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 amdgpu_device *adev = dev->dev_private;
+       struct dc *dc = adev->dm.dc;
+       unsigned int backlight = dc_get_current_backlight_pwm(dc);
+
+       seq_printf(m, "0x%x\n", backlight);
+       return 0;
+}
+
+/*
+ * Backlight value that is being approached.  Read only.
+ * As written to display, taking ABM and backlight lut into account.
+ * Ranges from 0x0 to 0x10000 (= 100% PWM)
+ */
+static int target_backlight_read(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 amdgpu_device *adev = dev->dev_private;
+       struct dc *dc = adev->dm.dc;
+       unsigned int backlight = dc_get_target_backlight_pwm(dc);
+
+       seq_printf(m, "0x%x\n", backlight);
+       return 0;
+}
+
+static const struct drm_info_list amdgpu_dm_debugfs_list[] = {
+       {"amdgpu_current_backlight_pwm", &current_backlight_read},
+       {"amdgpu_target_backlight_pwm", &target_backlight_read},
+};
+
 int dtn_debugfs_init(struct amdgpu_device *adev)
 {
        static const struct file_operations dtn_log_fops = {
@@ -813,9 +852,15 @@ int dtn_debugfs_init(struct amdgpu_device *adev)
        };
 
        struct drm_minor *minor = adev->ddev->primary;
-       struct dentry *root = minor->debugfs_root;
+       struct dentry *ent, *root = minor->debugfs_root;
+       int ret;
+
+       ret = amdgpu_debugfs_add_files(adev, amdgpu_dm_debugfs_list,
+                               ARRAY_SIZE(amdgpu_dm_debugfs_list));
+       if (ret)
+               return ret;
 
-       struct dentry *ent = debugfs_create_file(
+       ent = debugfs_create_file(
                "amdgpu_dm_dtn_log",
                0644,
                root,