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authorMahesh Kumar <mahesh1.kumar@intel.com>2018-07-13 16:59:33 +0300
committerMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2018-08-13 15:00:20 +0300
commitd5cc15a0c66e207d5a7f1b92f32899cc8f380468 (patch)
tree1263869c956b0df19e6c9e75d2cc3da4a365aac1 /include/drm/drm_crtc.h
parenteec97cd3677d92a01218b771f35436ea6141e933 (diff)
downloadlinux-d5cc15a0c66e207d5a7f1b92f32899cc8f380468.tar.xz
drm: crc: Introduce verify_crc_source callback
This patch adds a new callback function "verify_crc_source" which will be used during setting the crc source in control node. This will help in avoiding setting of wrong string for source. Changes since V1: - do not yet verify_crc_source during open. Changes since V1: - improve callback description Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com> Cc: dri-devel@lists.freedesktop.org Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180713135942.25061-2-mahesh1.kumar@intel.com
Diffstat (limited to 'include/drm/drm_crtc.h')
-rw-r--r--include/drm/drm_crtc.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 92e7fc7f05a4..9dcbce93aeae 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -746,6 +746,22 @@ struct drm_crtc_funcs {
*/
int (*set_crc_source)(struct drm_crtc *crtc, const char *source,
size_t *values_cnt);
+ /**
+ * @verify_crc_source:
+ *
+ * verifies the source of CRC checksums of frames before setting the
+ * source for CRC and during crc open. Source parameter can be NULL
+ * while disabling crc source.
+ *
+ * This callback is optional if the driver does not support any CRC
+ * generation functionality.
+ *
+ * RETURNS:
+ *
+ * 0 on success or a negative error code on failure.
+ */
+ int (*verify_crc_source)(struct drm_crtc *crtc, const char *source,
+ size_t *values_cnt);
/**
* @atomic_print_state: