Merge tag 'trace-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux...

[linux-2.6-microblaze.git] / drivers / gpu / drm / drm_debugfs.c

diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 2bea221..3d71820 100644 (file)
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -311,13 +311,13 @@ static ssize_t connector_write(struct file *file, const char __user *ubuf,
 
        buf[len] = '\0';
 
-       if (!strcmp(buf, "on"))
+       if (sysfs_streq(buf, "on"))
                connector->force = DRM_FORCE_ON;
-       else if (!strcmp(buf, "digital"))
+       else if (sysfs_streq(buf, "digital"))
                connector->force = DRM_FORCE_ON_DIGITAL;
-       else if (!strcmp(buf, "off"))
+       else if (sysfs_streq(buf, "off"))
                connector->force = DRM_FORCE_OFF;
-       else if (!strcmp(buf, "unspecified"))
+       else if (sysfs_streq(buf, "unspecified"))
                connector->force = DRM_FORCE_UNSPECIFIED;
        else
                return -EINVAL;
@@ -376,6 +376,24 @@ static ssize_t edid_write(struct file *file, const char __user *ubuf,
        return (ret) ? ret : len;
 }
 
+/*
+ * Returns the min and max vrr vfreq through the connector's debugfs file.
+ * Example usage: cat /sys/kernel/debug/dri/0/DP-1/vrr_range
+ */
+static int vrr_range_show(struct seq_file *m, void *data)
+{
+       struct drm_connector *connector = m->private;
+
+       if (connector->status != connector_status_connected)
+               return -ENODEV;
+
+       seq_printf(m, "Min: %u\n", (u8)connector->display_info.monitor_range.min_vfreq);
+       seq_printf(m, "Max: %u\n", (u8)connector->display_info.monitor_range.max_vfreq);
+
+       return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(vrr_range);
+
 static const struct file_operations drm_edid_fops = {
        .owner = THIS_MODULE,
        .open = edid_open,
@@ -413,6 +431,10 @@ void drm_debugfs_connector_add(struct drm_connector *connector)
        /* edid */
        debugfs_create_file("edid_override", S_IRUGO | S_IWUSR, root, connector,
                            &drm_edid_fops);
+
+       /* vrr range */
+       debugfs_create_file("vrr_range", S_IRUGO, root, connector,
+                           &vrr_range_fops);
 }
 
 void drm_debugfs_connector_remove(struct drm_connector *connector)