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authorMahesh Kumar <mahesh1.kumar@intel.com>2018-07-13 16:59:34 +0300
committerMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2018-08-13 15:00:20 +0300
commit4396551e9cf3e7233d45a2ce92f73e085bcad4b2 (patch)
tree78b0074d98a902b4ff7cd909a340247a639d867a /drivers/gpu/drm/drm_debugfs_crc.c
parentd5cc15a0c66e207d5a7f1b92f32899cc8f380468 (diff)
downloadlinux-4396551e9cf3e7233d45a2ce92f73e085bcad4b2.tar.xz
drm: crc: Introduce get_crc_sources callback
This patch introduce a callback function "get_crc_sources" which will be called during read of control node. It is an optional callback function and if driver implements this callback, driver should return a constant pointer to an array of crc sources list and update count according to the number of source in the list. Changes Since V1: (Daniel) - return const pointer to an array of crc sources list - do validation of sources in CRC-core Changes Since V2: - update commit message - update callback documentation - print one source name per line 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/20180713135942.25061-3-mahesh1.kumar@intel.com
Diffstat (limited to 'drivers/gpu/drm/drm_debugfs_crc.c')
-rw-r--r--drivers/gpu/drm/drm_debugfs_crc.c23
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c
index 72bfd8af3f7a..d7e626331eca 100644
--- a/drivers/gpu/drm/drm_debugfs_crc.c
+++ b/drivers/gpu/drm/drm_debugfs_crc.c
@@ -68,8 +68,29 @@ static int crc_control_show(struct seq_file *m, void *data)
{
struct drm_crtc *crtc = m->private;
- seq_printf(m, "%s\n", crtc->crc.source);
+ if (crtc->funcs->get_crc_sources) {
+ size_t count;
+ const char *const *sources = crtc->funcs->get_crc_sources(crtc,
+ &count);
+ size_t values_cnt;
+ int i;
+
+ if (count == 0 || !sources)
+ goto out;
+
+ for (i = 0; i < count; i++)
+ if (!crtc->funcs->verify_crc_source(crtc, sources[i],
+ &values_cnt)) {
+ if (strcmp(sources[i], crtc->crc.source))
+ seq_printf(m, "%s\n", sources[i]);
+ else
+ seq_printf(m, "%s*\n", sources[i]);
+ }
+ }
+ return 0;
+out:
+ seq_printf(m, "%s*\n", crtc->crc.source);
return 0;
}