Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * Copyright © 2016 Collabora Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Permission is hereby granted, free of charge, to any person obtaining a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * copy of this software and associated documentation files (the "Software"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * to deal in the Software without restriction, including without limitation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * and/or sell copies of the Software, and to permit persons to whom the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * Software is furnished to do so, subject to the following conditions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * The above copyright notice and this permission notice shall be included in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * all copies or substantial portions of the Software.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * OTHER DEALINGS IN THE SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #ifndef __DRM_DEBUGFS_CRC_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define __DRM_DEBUGFS_CRC_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define DRM_MAX_CRC_NR		10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  * struct drm_crtc_crc_entry - entry describing a frame's content
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)  * @has_frame_counter: whether the source was able to provide a frame number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)  * @frame: number of the frame this CRC is about, if @has_frame_counter is true
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)  * @crc: array of values that characterize the frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct drm_crtc_crc_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	bool has_frame_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	uint32_t frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	uint32_t crcs[DRM_MAX_CRC_NR];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define DRM_CRC_ENTRIES_NR	128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)  * struct drm_crtc_crc - data supporting CRC capture on a given CRTC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)  * @lock: protects the fields in this struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)  * @source: name of the currently configured source of CRCs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)  * @opened: whether userspace has opened the data file for reading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)  * @overflow: whether an overflow occured.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)  * @entries: array of entries, with size of %DRM_CRC_ENTRIES_NR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)  * @head: head of circular queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)  * @tail: tail of circular queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)  * @values_cnt: number of CRC values per entry, up to %DRM_MAX_CRC_NR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)  * @wq: workqueue used to synchronize reading and writing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct drm_crtc_crc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	const char *source;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	bool opened, overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	struct drm_crtc_crc_entry *entries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	int head, tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	size_t values_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	wait_queue_head_t wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #if defined(CONFIG_DEBUG_FS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int drm_crtc_add_crc_entry(struct drm_crtc *crtc, bool has_frame,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 			   uint32_t frame, uint32_t *crcs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static inline int drm_crtc_add_crc_entry(struct drm_crtc *crtc, bool has_frame,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 					 uint32_t frame, uint32_t *crcs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #endif /* defined(CONFIG_DEBUG_FS) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #endif /* __DRM_DEBUGFS_CRC_H__ */