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authorLiviu Dudau <Liviu.Dudau@arm.com>2019-07-03 15:56:03 +0100
committerLiviu Dudau <Liviu.Dudau@arm.com>2019-08-02 17:28:22 +0100
commit84a68104193efd0e11dd9284e5be9070dde3fdd1 (patch)
tree4cc04bb1b5ad5f3db3d80746de796f6388b90bdb /drivers/gpu/drm/drm_debugfs_crc.c
parent28ba1b1da49a20ba8fb767d6ddd7c521ec79a119 (diff)
drm/drm_debugfs_crc.c: Document that .verify_crc_source vfunc is required for enabling CRC support.
drm_debugfs_crtc_crc_add() function checks that both .set_crc_source and .verify_crc_source hooks are provided before enabling debugfs support for reading per-frame CRC data. Make that explicit in the documentation. Cc: Daniel Vetter <daniel@ffwll.ch> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Liviu Dudau <liviu.dudau@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190703150330.21992-1-Liviu.Dudau@arm.com
Diffstat (limited to 'drivers/gpu/drm/drm_debugfs_crc.c')
-rw-r--r--drivers/gpu/drm/drm_debugfs_crc.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c
index 7ca486d750e9..6604ed223160 100644
--- a/drivers/gpu/drm/drm_debugfs_crc.c
+++ b/drivers/gpu/drm/drm_debugfs_crc.c
@@ -66,9 +66,9 @@
* the reported CRCs of frames that should have the same contents.
*
* On the driver side the implementation effort is minimal, drivers only need to
- * implement &drm_crtc_funcs.set_crc_source. The debugfs files are automatically
- * set up if that vfunc is set. CRC samples need to be captured in the driver by
- * calling drm_crtc_add_crc_entry().
+ * implement &drm_crtc_funcs.set_crc_source and &drm_crtc_funcs.verify_crc_source.
+ * The debugfs files are automatically set up if those vfuncs are set. CRC samples
+ * need to be captured in the driver by calling drm_crtc_add_crc_entry().
*/
static int crc_control_show(struct seq_file *m, void *data)