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| author | Liviu Dudau <Liviu.Dudau@arm.com> | 2019-07-03 16:56:03 +0200 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2019-08-02 18:28:22 +0200 |
| commit | 84a68104193efd0e11dd9284e5be9070dde3fdd1 (patch) | |
| tree | 4cc04bb1b5ad5f3db3d80746de796f6388b90bdb /drivers/gpu/drm/drm_debugfs_crc.c | |
| parent | drm: mali-dp: Mark expected switch fall-through (diff) | |
| download | linux-84a68104193efd0e11dd9284e5be9070dde3fdd1.tar.xz linux-84a68104193efd0e11dd9284e5be9070dde3fdd1.zip | |
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.c | 6 |
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) |