From: Russell King Date: Mon, 30 Jul 2018 10:53:06 +0000 (+0100) Subject: drm/armada: switch primary plane to atomic modeset X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=13c94d5349c9c0756131e7bf2e703ab36ea55c73;p=openwrt%2Fstaging%2Fblogic.git drm/armada: switch primary plane to atomic modeset Switch the primary plane away from the transitional helpers, and use the atomic helpers instead to implement the legacy set_plane ioctl call for this plane. Signed-off-by: Russell King --- diff --git a/drivers/gpu/drm/armada/armada_crtc.c b/drivers/gpu/drm/armada/armada_crtc.c index 0cef40ad3a06..a25094bbeb2c 100644 --- a/drivers/gpu/drm/armada/armada_crtc.c +++ b/drivers/gpu/drm/armada/armada_crtc.c @@ -191,34 +191,6 @@ void armada_drm_plane_work_cancel(struct armada_crtc *dcrtc, armada_drm_plane_work_call(dcrtc, work, work->cancel); } -static void armada_drm_crtc_complete_frame_work(struct armada_crtc *dcrtc, - struct armada_plane_work *work) -{ - unsigned long flags; - - spin_lock_irqsave(&dcrtc->irq_lock, flags); - armada_drm_crtc_update_regs(dcrtc, work->regs); - spin_unlock_irqrestore(&dcrtc->irq_lock, flags); -} - -static struct armada_plane_work * -armada_drm_crtc_alloc_plane_work(struct drm_plane *plane) -{ - struct armada_plane_work *work; - int i = 0; - - work = kzalloc(sizeof(*work), GFP_KERNEL); - if (!work) - return NULL; - - work->plane = plane; - work->fn = armada_drm_crtc_complete_frame_work; - work->need_kfree = true; - armada_reg_queue_end(work->regs, i); - - return work; -} - static void armada_drm_crtc_queue_state_event(struct drm_crtc *crtc) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); @@ -318,9 +290,6 @@ static void armada_drm_crtc_irq(struct armada_crtc *dcrtc, u32 stat) spin_unlock(&dcrtc->irq_lock); - if (stat & GRA_FRAME_IRQ) - armada_drm_plane_work_run(dcrtc, dcrtc->crtc.primary); - if (stat & VSYNC_IRQ) { event = xchg(&dcrtc->event, NULL); if (event) { @@ -459,15 +428,9 @@ static void armada_drm_crtc_atomic_begin(struct drm_crtc *crtc, struct drm_crtc_state *old_crtc_state) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); - struct armada_plane *dplane; DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); - /* Wait 100ms for any plane works to complete */ - dplane = drm_to_armada_plane(crtc->primary); - if (WARN_ON(armada_drm_plane_work_wait(dplane, HZ / 10) == 0)) - armada_drm_plane_work_cancel(dcrtc, dplane); - dcrtc->regs_idx = 0; dcrtc->regs = dcrtc->atomic_regs; } @@ -511,8 +474,6 @@ static void armada_drm_crtc_atomic_disable(struct drm_crtc *crtc, if (plane) WARN_ON(!armada_drm_plane_work_wait(drm_to_armada_plane(plane), HZ)); - armada_drm_plane_work_wait(drm_to_armada_plane(dcrtc->crtc.primary), - MAX_SCHEDULE_TIMEOUT); drm_crtc_vblank_off(crtc); armada_drm_crtc_update(dcrtc, false); @@ -802,81 +763,6 @@ static void armada_drm_crtc_destroy(struct drm_crtc *crtc) kfree(dcrtc); } -/* - * The mode_config lock is held here, to prevent races between this - * and a mode_set. - */ -static int armada_drm_crtc_page_flip(struct drm_crtc *crtc, - struct drm_framebuffer *fb, struct drm_pending_vblank_event *event, - uint32_t page_flip_flags, struct drm_modeset_acquire_ctx *ctx) -{ - struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); - struct drm_plane *plane = crtc->primary; - const struct drm_plane_helper_funcs *plane_funcs; - struct drm_plane_state *state; - struct armada_plane_work *work; - int ret; - - /* Construct new state for the primary plane */ - state = drm_atomic_helper_plane_duplicate_state(plane); - if (!state) - return -ENOMEM; - - drm_atomic_set_fb_for_plane(state, fb); - - work = armada_drm_crtc_alloc_plane_work(plane); - if (!work) { - ret = -ENOMEM; - goto put_state; - } - - /* Make sure we can get vblank interrupts */ - ret = drm_crtc_vblank_get(crtc); - if (ret) - goto put_work; - - /* - * If we have another work pending, we can't process this flip. - * The modeset locks protect us from another user queuing a work - * while we're setting up. - */ - if (drm_to_armada_plane(plane)->work) { - ret = -EBUSY; - goto put_vblank; - } - - work->event = event; - work->old_fb = plane->state->fb; - - /* - * Hold a ref on the new fb while it's being displayed by the - * hardware. The old fb refcount will be released in the worker. - */ - drm_framebuffer_get(state->fb); - - /* Point of no return */ - swap(plane->state, state); - - dcrtc->regs_idx = 0; - dcrtc->regs = work->regs; - - plane_funcs = plane->helper_private; - plane_funcs->atomic_update(plane, state); - armada_reg_queue_end(dcrtc->regs, dcrtc->regs_idx); - - /* Queue the work - this should never fail */ - WARN_ON(armada_drm_plane_work_queue(dcrtc, work)); - work = NULL; - -put_vblank: - drm_crtc_vblank_put(crtc); -put_work: - kfree(work); -put_state: - drm_atomic_helper_plane_destroy_state(plane, state); - return ret; -} - /* These are called under the vbl_lock. */ static int armada_drm_crtc_enable_vblank(struct drm_crtc *crtc) { @@ -905,7 +791,7 @@ static const struct drm_crtc_funcs armada_crtc_funcs = { .cursor_move = armada_drm_crtc_cursor_move, .destroy = armada_drm_crtc_destroy, .set_config = drm_atomic_helper_set_config, - .page_flip = armada_drm_crtc_page_flip, + .page_flip = drm_atomic_helper_page_flip, .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, .enable_vblank = armada_drm_crtc_enable_vblank, diff --git a/drivers/gpu/drm/armada/armada_plane.c b/drivers/gpu/drm/armada/armada_plane.c index 1320fec4c386..39c9ba3ee57e 100644 --- a/drivers/gpu/drm/armada/armada_plane.c +++ b/drivers/gpu/drm/armada/armada_plane.c @@ -261,8 +261,8 @@ static const struct drm_plane_helper_funcs armada_primary_plane_helper_funcs = { }; static const struct drm_plane_funcs armada_primary_plane_funcs = { - .update_plane = drm_plane_helper_update, - .disable_plane = drm_plane_helper_disable, + .update_plane = drm_atomic_helper_update_plane, + .disable_plane = drm_atomic_helper_disable_plane, .destroy = drm_primary_helper_destroy, .reset = drm_atomic_helper_plane_reset, .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,