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74 lines
2.7 KiB
74 lines
2.7 KiB
/* |
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* Copyright © 2016 Collabora Ltd. |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a |
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* copy of this software and associated documentation files (the "Software"), |
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* to deal in the Software without restriction, including without limitation |
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* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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* and/or sell copies of the Software, and to permit persons to whom the |
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* Software is furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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* OTHER DEALINGS IN THE SOFTWARE. |
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*/ |
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#ifndef __DRM_DEBUGFS_CRC_H__ |
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#define __DRM_DEBUGFS_CRC_H__ |
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#define DRM_MAX_CRC_NR 10 |
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/** |
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* struct drm_crtc_crc_entry - entry describing a frame's content |
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* @has_frame_counter: whether the source was able to provide a frame number |
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* @frame: number of the frame this CRC is about, if @has_frame_counter is true |
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* @crc: array of values that characterize the frame |
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*/ |
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struct drm_crtc_crc_entry { |
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bool has_frame_counter; |
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uint32_t frame; |
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uint32_t crcs[DRM_MAX_CRC_NR]; |
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}; |
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#define DRM_CRC_ENTRIES_NR 128 |
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/** |
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* struct drm_crtc_crc - data supporting CRC capture on a given CRTC |
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* @lock: protects the fields in this struct |
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* @source: name of the currently configured source of CRCs |
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* @opened: whether userspace has opened the data file for reading |
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* @overflow: whether an overflow occured. |
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* @entries: array of entries, with size of %DRM_CRC_ENTRIES_NR |
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* @head: head of circular queue |
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* @tail: tail of circular queue |
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* @values_cnt: number of CRC values per entry, up to %DRM_MAX_CRC_NR |
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* @wq: workqueue used to synchronize reading and writing |
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*/ |
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struct drm_crtc_crc { |
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spinlock_t lock; |
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const char *source; |
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bool opened, overflow; |
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struct drm_crtc_crc_entry *entries; |
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int head, tail; |
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size_t values_cnt; |
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wait_queue_head_t wq; |
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}; |
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#if defined(CONFIG_DEBUG_FS) |
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int drm_crtc_add_crc_entry(struct drm_crtc *crtc, bool has_frame, |
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uint32_t frame, uint32_t *crcs); |
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#else |
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static inline int drm_crtc_add_crc_entry(struct drm_crtc *crtc, bool has_frame, |
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uint32_t frame, uint32_t *crcs) |
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{ |
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return -EINVAL; |
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} |
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#endif /* defined(CONFIG_DEBUG_FS) */ |
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#endif /* __DRM_DEBUGFS_CRC_H__ */
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