^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright 2016 Intel Corp.
^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 (including the next
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * paragraph) shall be included in all copies or substantial portions of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Software.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * OTHER DEALINGS IN THE SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #ifndef _DRM_VBLANK_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define _DRM_VBLANK_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/seqlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/idr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/poll.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <drm/drm_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <drm/drm_modes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct drm_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct drm_crtc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct drm_vblank_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * struct drm_pending_vblank_event - pending vblank event tracking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct drm_pending_vblank_event {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * @base: Base structure for tracking pending DRM events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct drm_pending_event base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * @pipe: drm_crtc_index() of the &drm_crtc this event is for.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) unsigned int pipe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * @sequence: frame event should be triggered at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) u64 sequence;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * @event: Actual event which will be sent to userspace.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * @event.base: DRM event base class.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct drm_event base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * @event.vbl:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * Event payload for vblank events, requested through
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * either the MODE_PAGE_FLIP or MODE_ATOMIC IOCTL. Also
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * generated by the legacy WAIT_VBLANK IOCTL, but new userspace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * should use MODE_QUEUE_SEQUENCE and &event.seq instead.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct drm_event_vblank vbl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * @event.seq: Event payload for the MODE_QUEUEU_SEQUENCE IOCTL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct drm_event_crtc_sequence seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) } event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * struct drm_vblank_crtc - vblank tracking for a CRTC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * This structure tracks the vblank state for one CRTC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * Note that for historical reasons - the vblank handling code is still shared
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * with legacy/non-kms drivers - this is a free-standing structure not directly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * connected to &struct drm_crtc. But all public interface functions are taking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * a &struct drm_crtc to hide this implementation detail.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct drm_vblank_crtc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * @dev: Pointer to the &drm_device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct drm_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * @queue: Wait queue for vblank waiters.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) wait_queue_head_t queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * @disable_timer: Disable timer for the delayed vblank disabling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * hysteresis logic. Vblank disabling is controlled through the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * drm_vblank_offdelay module option and the setting of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * &drm_device.max_vblank_count value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct timer_list disable_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * @seqlock: Protect vblank count and time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) seqlock_t seqlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * @count:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * Current software vblank counter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * Note that for a given vblank counter value drm_crtc_handle_vblank()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * and drm_crtc_vblank_count() or drm_crtc_vblank_count_and_time()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * provide a barrier: Any writes done before calling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * drm_crtc_handle_vblank() will be visible to callers of the later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * functions, iff the vblank count is the same or a later one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * IMPORTANT: This guarantee requires barriers, therefor never access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * this field directly. Use drm_crtc_vblank_count() instead.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) atomic64_t count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * @time: Vblank timestamp corresponding to @count.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) ktime_t time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * @refcount: Number of users/waiters of the vblank interrupt. Only when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * this refcount reaches 0 can the hardware interrupt be disabled using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * @disable_timer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) atomic_t refcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * @last: Protected by &drm_device.vbl_lock, used for wraparound handling.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) u32 last;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * @max_vblank_count:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * Maximum value of the vblank registers for this crtc. This value +1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * will result in a wrap-around of the vblank register. It is used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * by the vblank core to handle wrap-arounds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * If set to zero the vblank core will try to guess the elapsed vblanks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * between times when the vblank interrupt is disabled through
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * high-precision timestamps. That approach is suffering from small
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * races and imprecision over longer time periods, hence exposing a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * hardware vblank counter is always recommended.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * This is the runtime configurable per-crtc maximum set through
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * drm_crtc_set_max_vblank_count(). If this is used the driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * must leave the device wide &drm_device.max_vblank_count at zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * If non-zero, &drm_crtc_funcs.get_vblank_counter must be set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) u32 max_vblank_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * @inmodeset: Tracks whether the vblank is disabled due to a modeset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * For legacy driver bit 2 additionally tracks whether an additional
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * temporary vblank reference has been acquired to paper over the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * hardware counter resetting/jumping. KMS drivers should instead just
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * call drm_crtc_vblank_off() and drm_crtc_vblank_on(), which explicitly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * save and restore the vblank count.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) unsigned int inmodeset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * @pipe: drm_crtc_index() of the &drm_crtc corresponding to this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) unsigned int pipe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * @framedur_ns: Frame/Field duration in ns, used by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * drm_crtc_vblank_helper_get_vblank_timestamp() and computed by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * drm_calc_timestamping_constants().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) int framedur_ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * @linedur_ns: Line duration in ns, used by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * drm_crtc_vblank_helper_get_vblank_timestamp() and computed by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * drm_calc_timestamping_constants().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) int linedur_ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * @hwmode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * Cache of the current hardware display mode. Only valid when @enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * is set. This is used by helpers like
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * drm_crtc_vblank_helper_get_vblank_timestamp(). We can't just access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * the hardware mode by e.g. looking at &drm_crtc_state.adjusted_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * because that one is really hard to get from interrupt context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) struct drm_display_mode hwmode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * @enabled: Tracks the enabling state of the corresponding &drm_crtc to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * avoid double-disabling and hence corrupting saved state. Needed by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * drivers not using atomic KMS, since those might go through their CRTC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * disabling functions multiple times.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) bool enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) * @worker: The &kthread_worker used for executing vblank works.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) struct kthread_worker *worker;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) * @pending_work: A list of scheduled &drm_vblank_work items that are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) * waiting for a future vblank.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) struct list_head pending_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * @work_wait_queue: The wait queue used for signaling that a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * &drm_vblank_work item has either finished executing, or was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * cancelled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) wait_queue_head_t work_wait_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) bool drm_dev_has_vblank(const struct drm_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) u64 drm_crtc_vblank_count(struct drm_crtc *crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) u64 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) ktime_t *vblanktime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) void drm_crtc_send_vblank_event(struct drm_crtc *crtc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) struct drm_pending_vblank_event *e);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) void drm_crtc_arm_vblank_event(struct drm_crtc *crtc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) struct drm_pending_vblank_event *e);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) void drm_vblank_set_event(struct drm_pending_vblank_event *e,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) u64 *seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) ktime_t *now);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) bool drm_crtc_handle_vblank(struct drm_crtc *crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) int drm_crtc_vblank_get(struct drm_crtc *crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) void drm_crtc_vblank_put(struct drm_crtc *crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) void drm_wait_one_vblank(struct drm_device *dev, unsigned int pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) void drm_crtc_wait_one_vblank(struct drm_crtc *crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) void drm_crtc_vblank_off(struct drm_crtc *crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) void drm_crtc_vblank_reset(struct drm_crtc *crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) void drm_crtc_vblank_on(struct drm_crtc *crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) u64 drm_crtc_accurate_vblank_count(struct drm_crtc *crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) void drm_vblank_restore(struct drm_device *dev, unsigned int pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) void drm_crtc_vblank_restore(struct drm_crtc *crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) void drm_calc_timestamping_constants(struct drm_crtc *crtc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) const struct drm_display_mode *mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) void drm_crtc_set_max_vblank_count(struct drm_crtc *crtc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) u32 max_vblank_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) * Helpers for struct drm_crtc_funcs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) typedef bool (*drm_vblank_get_scanout_position_func)(struct drm_crtc *crtc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) bool in_vblank_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) int *vpos, int *hpos,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) ktime_t *stime,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) ktime_t *etime,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) const struct drm_display_mode *mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) drm_crtc_vblank_helper_get_vblank_timestamp_internal(struct drm_crtc *crtc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) int *max_error,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) ktime_t *vblank_time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) bool in_vblank_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) drm_vblank_get_scanout_position_func get_scanout_position);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) bool drm_crtc_vblank_helper_get_vblank_timestamp(struct drm_crtc *crtc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) int *max_error,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) ktime_t *vblank_time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) bool in_vblank_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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