Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
rodrigosiqueira | 541 | 53.88% | 3 | 42.86% |
Haneen Mohammed | 458 | 45.62% | 3 | 42.86% |
Kumar, Mahesh | 5 | 0.50% | 1 | 14.29% |
Total | 1004 | 7 |
// SPDX-License-Identifier: GPL-2.0+ #include "vkms_drv.h" #include <drm/drm_atomic_helper.h> #include <drm/drm_crtc_helper.h> static void _vblank_handle(struct vkms_output *output) { struct drm_crtc *crtc = &output->crtc; struct vkms_crtc_state *state = to_vkms_crtc_state(crtc->state); bool ret; spin_lock(&output->lock); ret = drm_crtc_handle_vblank(crtc); if (!ret) DRM_ERROR("vkms failure on handling vblank"); if (state && output->crc_enabled) { u64 frame = drm_crtc_accurate_vblank_count(crtc); /* update frame_start only if a queued vkms_crc_work_handle() * has read the data */ spin_lock(&output->state_lock); if (!state->frame_start) state->frame_start = frame; spin_unlock(&output->state_lock); ret = queue_work(output->crc_workq, &state->crc_work); if (!ret) DRM_WARN("failed to queue vkms_crc_work_handle"); } spin_unlock(&output->lock); } static enum hrtimer_restart vkms_vblank_simulate(struct hrtimer *timer) { struct vkms_output *output = container_of(timer, struct vkms_output, vblank_hrtimer); int ret_overrun; _vblank_handle(output); ret_overrun = hrtimer_forward_now(&output->vblank_hrtimer, output->period_ns); return HRTIMER_RESTART; } static int vkms_enable_vblank(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; unsigned int pipe = drm_crtc_index(crtc); struct drm_vblank_crtc *vblank = &dev->vblank[pipe]; struct vkms_output *out = drm_crtc_to_vkms_output(crtc); drm_calc_timestamping_constants(crtc, &crtc->mode); hrtimer_init(&out->vblank_hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); out->vblank_hrtimer.function = &vkms_vblank_simulate; out->period_ns = ktime_set(0, vblank->framedur_ns); hrtimer_start(&out->vblank_hrtimer, out->period_ns, HRTIMER_MODE_REL); return 0; } static void vkms_disable_vblank(struct drm_crtc *crtc) { struct vkms_output *out = drm_crtc_to_vkms_output(crtc); hrtimer_cancel(&out->vblank_hrtimer); } bool vkms_get_vblank_timestamp(struct drm_device *dev, unsigned int pipe, int *max_error, ktime_t *vblank_time, bool in_vblank_irq) { struct vkms_device *vkmsdev = drm_device_to_vkms_device(dev); struct vkms_output *output = &vkmsdev->output; *vblank_time = output->vblank_hrtimer.node.expires; return true; } static void vkms_atomic_crtc_reset(struct drm_crtc *crtc) { struct vkms_crtc_state *vkms_state = NULL; if (crtc->state) { vkms_state = to_vkms_crtc_state(crtc->state); __drm_atomic_helper_crtc_destroy_state(crtc->state); kfree(vkms_state); crtc->state = NULL; } vkms_state = kzalloc(sizeof(*vkms_state), GFP_KERNEL); if (!vkms_state) return; crtc->state = &vkms_state->base; crtc->state->crtc = crtc; } static struct drm_crtc_state * vkms_atomic_crtc_duplicate_state(struct drm_crtc *crtc) { struct vkms_crtc_state *vkms_state; if (WARN_ON(!crtc->state)) return NULL; vkms_state = kzalloc(sizeof(*vkms_state), GFP_KERNEL); if (!vkms_state) return NULL; __drm_atomic_helper_crtc_duplicate_state(crtc, &vkms_state->base); INIT_WORK(&vkms_state->crc_work, vkms_crc_work_handle); return &vkms_state->base; } static void vkms_atomic_crtc_destroy_state(struct drm_crtc *crtc, struct drm_crtc_state *state) { struct vkms_crtc_state *vkms_state = to_vkms_crtc_state(state); __drm_atomic_helper_crtc_destroy_state(state); if (vkms_state) { flush_work(&vkms_state->crc_work); kfree(vkms_state); } } static const struct drm_crtc_funcs vkms_crtc_funcs = { .set_config = drm_atomic_helper_set_config, .destroy = drm_crtc_cleanup, .page_flip = drm_atomic_helper_page_flip, .reset = vkms_atomic_crtc_reset, .atomic_duplicate_state = vkms_atomic_crtc_duplicate_state, .atomic_destroy_state = vkms_atomic_crtc_destroy_state, .enable_vblank = vkms_enable_vblank, .disable_vblank = vkms_disable_vblank, .set_crc_source = vkms_set_crc_source, .verify_crc_source = vkms_verify_crc_source, }; static void vkms_crtc_atomic_enable(struct drm_crtc *crtc, struct drm_crtc_state *old_state) { drm_crtc_vblank_on(crtc); } static void vkms_crtc_atomic_disable(struct drm_crtc *crtc, struct drm_crtc_state *old_state) { drm_crtc_vblank_off(crtc); } static void vkms_crtc_atomic_begin(struct drm_crtc *crtc, struct drm_crtc_state *old_crtc_state) { struct vkms_output *vkms_output = drm_crtc_to_vkms_output(crtc); /* This lock is held across the atomic commit to block vblank timer * from scheduling vkms_crc_work_handle until the crc_data is updated */ spin_lock_irq(&vkms_output->lock); } static void vkms_crtc_atomic_flush(struct drm_crtc *crtc, struct drm_crtc_state *old_crtc_state) { struct vkms_output *vkms_output = drm_crtc_to_vkms_output(crtc); unsigned long flags; if (crtc->state->event) { spin_lock_irqsave(&crtc->dev->event_lock, flags); if (drm_crtc_vblank_get(crtc) != 0) drm_crtc_send_vblank_event(crtc, crtc->state->event); else drm_crtc_arm_vblank_event(crtc, crtc->state->event); spin_unlock_irqrestore(&crtc->dev->event_lock, flags); crtc->state->event = NULL; } spin_unlock_irq(&vkms_output->lock); } static const struct drm_crtc_helper_funcs vkms_crtc_helper_funcs = { .atomic_begin = vkms_crtc_atomic_begin, .atomic_flush = vkms_crtc_atomic_flush, .atomic_enable = vkms_crtc_atomic_enable, .atomic_disable = vkms_crtc_atomic_disable, }; int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, struct drm_plane *primary, struct drm_plane *cursor) { struct vkms_output *vkms_out = drm_crtc_to_vkms_output(crtc); int ret; ret = drm_crtc_init_with_planes(dev, crtc, primary, cursor, &vkms_crtc_funcs, NULL); if (ret) { DRM_ERROR("Failed to init CRTC\n"); return ret; } drm_crtc_helper_add(crtc, &vkms_crtc_helper_funcs); spin_lock_init(&vkms_out->lock); spin_lock_init(&vkms_out->state_lock); vkms_out->crc_workq = alloc_ordered_workqueue("vkms_crc_workq", 0); return ret; }
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