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author | Mahesh Kumar <mahesh1.kumar@intel.com> | 2018-07-13 19:29:34 +0530 |
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committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2018-08-13 14:00:20 +0200 |
commit | 4396551e9cf3e7233d45a2ce92f73e085bcad4b2 (patch) | |
tree | 78b0074d98a902b4ff7cd909a340247a639d867a /drivers/gpu/drm/drm_debugfs_crc.c | |
parent | d5cc15a0c66e207d5a7f1b92f32899cc8f380468 (diff) | |
download | linux-4396551e9cf3e7233d45a2ce92f73e085bcad4b2.tar.bz2 |
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.c | 23 |
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; } |