コード例 #1
0
ファイル: malidp_drv.c プロジェクト: MaxKellermann/linux
static void malidp_atomic_commit_hw_done(struct drm_atomic_state *state)
{
	struct drm_pending_vblank_event *event;
	struct drm_device *drm = state->dev;
	struct malidp_drm *malidp = drm->dev_private;

	if (malidp->crtc.enabled) {
		/* only set config_valid if the CRTC is enabled */
		if (malidp_set_and_wait_config_valid(drm))
			DRM_DEBUG_DRIVER("timed out waiting for updated configuration\n");
	}

	event = malidp->crtc.state->event;
	if (event) {
		malidp->crtc.state->event = NULL;

		spin_lock_irq(&drm->event_lock);
		if (drm_crtc_vblank_get(&malidp->crtc) == 0)
			drm_crtc_arm_vblank_event(&malidp->crtc, event);
		else
			drm_crtc_send_vblank_event(&malidp->crtc, event);
		spin_unlock_irq(&drm->event_lock);
	}
	drm_atomic_helper_commit_hw_done(state);
}
コード例 #2
0
ファイル: pl111_display.c プロジェクト: krzk/linux
static void pl111_display_update(struct drm_simple_display_pipe *pipe,
				 struct drm_plane_state *old_pstate)
{
	struct drm_crtc *crtc = &pipe->crtc;
	struct drm_device *drm = crtc->dev;
	struct pl111_drm_dev_private *priv = drm->dev_private;
	struct drm_pending_vblank_event *event = crtc->state->event;
	struct drm_plane *plane = &pipe->plane;
	struct drm_plane_state *pstate = plane->state;
	struct drm_framebuffer *fb = pstate->fb;

	if (fb) {
		u32 addr = drm_fb_cma_get_gem_addr(fb, pstate, 0);

		writel(addr, priv->regs + CLCD_UBAS);
	}

	if (event) {
		crtc->state->event = NULL;

		spin_lock_irq(&crtc->dev->event_lock);
		if (crtc->state->active && drm_crtc_vblank_get(crtc) == 0)
			drm_crtc_arm_vblank_event(crtc, event);
		else
			drm_crtc_send_vblank_event(crtc, event);
		spin_unlock_irq(&crtc->dev->event_lock);
	}
}
コード例 #3
0
ファイル: kirin_drm_ade.c プロジェクト: dznm/linux
static void ade_crtc_atomic_flush(struct drm_crtc *crtc,
				  struct drm_crtc_state *old_state)

{
	struct ade_crtc *acrtc = to_ade_crtc(crtc);
	struct ade_hw_ctx *ctx = acrtc->ctx;
	struct drm_pending_vblank_event *event = crtc->state->event;
	void __iomem *base = ctx->base;

	/* only crtc is enabled regs take effect */
	if (acrtc->enable) {
		ade_dump_regs(base);
		/* flush ade registers */
		writel(ADE_ENABLE, base + ADE_EN);
	}

	if (event) {
		crtc->state->event = NULL;

		spin_lock_irq(&crtc->dev->event_lock);
		if (drm_crtc_vblank_get(crtc) == 0)
			drm_crtc_arm_vblank_event(crtc, event);
		else
			drm_crtc_send_vblank_event(crtc, event);
		spin_unlock_irq(&crtc->dev->event_lock);
	}
}
コード例 #4
0
ファイル: shmob_drm_crtc.c プロジェクト: AK101111/linux
static int shmob_drm_crtc_page_flip(struct drm_crtc *crtc,
				    struct drm_framebuffer *fb,
				    struct drm_pending_vblank_event *event,
				    uint32_t page_flip_flags)
{
	struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
	struct drm_device *dev = scrtc->crtc.dev;
	unsigned long flags;

	spin_lock_irqsave(&dev->event_lock, flags);
	if (scrtc->event != NULL) {
		spin_unlock_irqrestore(&dev->event_lock, flags);
		return -EBUSY;
	}
	spin_unlock_irqrestore(&dev->event_lock, flags);

	crtc->primary->fb = fb;
	shmob_drm_crtc_update_base(scrtc);

	if (event) {
		event->pipe = 0;
		drm_crtc_vblank_get(&scrtc->crtc);
		spin_lock_irqsave(&dev->event_lock, flags);
		scrtc->event = event;
		spin_unlock_irqrestore(&dev->event_lock, flags);
	}

	return 0;
}
コード例 #5
0
ファイル: rockchip_drm_fb.c プロジェクト: 513855417/linux
/*
 * We can't use drm_atomic_helper_wait_for_vblanks() because rk3288 and rk3066
 * have hardware counters for neither vblanks nor scanlines, which results in
 * a race where:
 *				| <-- HW vsync irq and reg take effect
 *	       plane_commit --> |
 *	get_vblank and wait --> |
 *				| <-- handle_vblank, vblank->count + 1
 *		 cleanup_fb --> |
 *		iommu crash --> |
 *				| <-- HW vsync irq and reg take effect
 *
 * This function is equivalent but uses rockchip_crtc_wait_for_update() instead
 * of waiting for vblank_count to change.
 */
static void
rockchip_atomic_wait_for_complete(struct drm_device *dev, struct drm_atomic_state *old_state)
{
	struct drm_crtc_state *old_crtc_state;
	struct drm_crtc *crtc;
	int i, ret;

	for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
		/* No one cares about the old state, so abuse it for tracking
		 * and store whether we hold a vblank reference (and should do a
		 * vblank wait) in the ->enable boolean.
		 */
		old_crtc_state->enable = false;

		if (!crtc->state->active)
			continue;

		if (!drm_atomic_helper_framebuffer_changed(dev,
				old_state, crtc))
			continue;

		ret = drm_crtc_vblank_get(crtc);
		if (ret != 0)
			continue;

		old_crtc_state->enable = true;
	}
コード例 #6
0
ファイル: intel_fbc.c プロジェクト: JamesChenFromChina/linux
static void intel_fbc_schedule_activation(struct intel_crtc *crtc)
{
	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
	struct intel_fbc *fbc = &dev_priv->fbc;
	struct intel_fbc_work *work = &fbc->work;

	WARN_ON(!mutex_is_locked(&fbc->lock));
	if (WARN_ON(!fbc->enabled))
		return;

	if (drm_crtc_vblank_get(&crtc->base)) {
		DRM_ERROR("vblank not available for FBC on pipe %c\n",
			  pipe_name(crtc->pipe));
		return;
	}

	/* It is useless to call intel_fbc_cancel_work() or cancel_work() in
	 * this function since we're not releasing fbc.lock, so it won't have an
	 * opportunity to grab it to discover that it was cancelled. So we just
	 * update the expected jiffy count. */
	work->scheduled = true;
	work->scheduled_vblank = drm_crtc_vblank_count(&crtc->base);
	drm_crtc_vblank_put(&crtc->base);

	schedule_work(&work->work);
}
コード例 #7
0
ファイル: malidp_drv.c プロジェクト: avagin/linux
static void malidp_atomic_commit_hw_done(struct drm_atomic_state *state)
{
	struct drm_device *drm = state->dev;
	struct malidp_drm *malidp = drm->dev_private;

	malidp->event = malidp->crtc.state->event;
	malidp->crtc.state->event = NULL;

	if (malidp->crtc.state->active) {
		/*
		 * if we have an event to deliver to userspace, make sure
		 * the vblank is enabled as we are sending it from the IRQ
		 * handler.
		 */
		if (malidp->event)
			drm_crtc_vblank_get(&malidp->crtc);

		/* only set config_valid if the CRTC is enabled */
		if (malidp_set_and_wait_config_valid(drm) < 0)
			DRM_DEBUG_DRIVER("timed out waiting for updated configuration\n");
	} else if (malidp->event) {
		/* CRTC inactive means vblank IRQ is disabled, send event directly */
		spin_lock_irq(&drm->event_lock);
		drm_crtc_send_vblank_event(&malidp->crtc, malidp->event);
		malidp->event = NULL;
		spin_unlock_irq(&drm->event_lock);
	}
	drm_atomic_helper_commit_hw_done(state);
}
コード例 #8
0
ファイル: intel_fbc.c プロジェクト: IntelBUAP/Repo-Linux-RT
static void intel_fbc_work_fn(struct work_struct *__work)
{
	struct drm_i915_private *dev_priv =
		container_of(__work, struct drm_i915_private, fbc.work.work);
	struct intel_fbc *fbc = &dev_priv->fbc;
	struct intel_fbc_work *work = &fbc->work;
	struct intel_crtc *crtc = fbc->crtc;
	struct drm_vblank_crtc *vblank = &dev_priv->dev->vblank[crtc->pipe];

	if (drm_crtc_vblank_get(&crtc->base)) {
		DRM_ERROR("vblank not available for FBC on pipe %c\n",
			  pipe_name(crtc->pipe));

		mutex_lock(&fbc->lock);
		work->scheduled = false;
		mutex_unlock(&fbc->lock);
		return;
	}

retry:
	/* Delay the actual enabling to let pageflipping cease and the
	 * display to settle before starting the compression. Note that
	 * this delay also serves a second purpose: it allows for a
	 * vblank to pass after disabling the FBC before we attempt
	 * to modify the control registers.
	 *
	 * WaFbcWaitForVBlankBeforeEnable:ilk,snb
	 *
	 * It is also worth mentioning that since work->scheduled_vblank can be
	 * updated multiple times by the other threads, hitting the timeout is
	 * not an error condition. We'll just end up hitting the "goto retry"
	 * case below.
	 */
	wait_event_timeout(vblank->queue,
		drm_crtc_vblank_count(&crtc->base) != work->scheduled_vblank,
		msecs_to_jiffies(50));

	mutex_lock(&fbc->lock);

	/* Were we cancelled? */
	if (!work->scheduled)
		goto out;

	/* Were we delayed again while this function was sleeping? */
	if (drm_crtc_vblank_count(&crtc->base) == work->scheduled_vblank) {
		mutex_unlock(&fbc->lock);
		goto retry;
	}

	intel_fbc_hw_activate(dev_priv);

	work->scheduled = false;

out:
	mutex_unlock(&fbc->lock);
	drm_crtc_vblank_put(&crtc->base);
}
コード例 #9
0
ファイル: mdp4_crtc.c プロジェクト: Ambrosia/whatever
static void mdp4_crtc_prepare(struct drm_crtc *crtc)
{
	struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
	DBG("%s", mdp4_crtc->name);
	/* make sure we hold a ref to mdp clks while setting up mode: */
	drm_crtc_vblank_get(crtc);
	mdp4_enable(get_kms(crtc));
	mdp4_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
}
コード例 #10
0
ファイル: mdp4_kms.c プロジェクト: Lyude/linux
static void mdp4_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *state)
{
	struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
	int i;
	struct drm_crtc *crtc;
	struct drm_crtc_state *crtc_state;

	mdp4_enable(mdp4_kms);

	/* see 119ecb7fd */
	for_each_new_crtc_in_state(state, crtc, crtc_state, i)
		drm_crtc_vblank_get(crtc);
}
コード例 #11
0
ファイル: rcar_du_crtc.c プロジェクト: Kirill2013/kasan
static void rcar_du_crtc_atomic_begin(struct drm_crtc *crtc)
{
	struct drm_pending_vblank_event *event = crtc->state->event;
	struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
	struct drm_device *dev = rcrtc->crtc.dev;
	unsigned long flags;

	if (event) {
		WARN_ON(drm_crtc_vblank_get(crtc) != 0);

		spin_lock_irqsave(&dev->event_lock, flags);
		rcrtc->event = event;
		spin_unlock_irqrestore(&dev->event_lock, flags);
	}
}
コード例 #12
0
ファイル: mdp4_kms.c プロジェクト: 513855417/linux
static void mdp4_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *state)
{
	struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
	int i, ncrtcs = state->dev->mode_config.num_crtc;

	mdp4_enable(mdp4_kms);

	/* see 119ecb7fd */
	for (i = 0; i < ncrtcs; i++) {
		struct drm_crtc *crtc = state->crtcs[i];
		if (!crtc)
			continue;
		drm_crtc_vblank_get(crtc);
	}
}
コード例 #13
0
ファイル: hdlcd_crtc.c プロジェクト: asmalldev/linux
static void hdlcd_crtc_atomic_begin(struct drm_crtc *crtc,
				    struct drm_crtc_state *state)
{
	struct drm_pending_vblank_event *event = crtc->state->event;

	if (event) {
		crtc->state->event = NULL;

		spin_lock_irq(&crtc->dev->event_lock);
		if (drm_crtc_vblank_get(crtc) == 0)
			drm_crtc_arm_vblank_event(crtc, event);
		else
			drm_crtc_send_vblank_event(crtc, event);
		spin_unlock_irq(&crtc->dev->event_lock);
	}
}
コード例 #14
0
ファイル: sun4i_crtc.c プロジェクト: AK101111/linux
static void sun4i_crtc_atomic_begin(struct drm_crtc *crtc,
				    struct drm_crtc_state *old_state)
{
	struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
	struct drm_device *dev = crtc->dev;
	unsigned long flags;

	if (crtc->state->event) {
		WARN_ON(drm_crtc_vblank_get(crtc) != 0);

		spin_lock_irqsave(&dev->event_lock, flags);
		scrtc->event = crtc->state->event;
		spin_unlock_irqrestore(&dev->event_lock, flags);
		crtc->state->event = NULL;
	 }
}
コード例 #15
0
ファイル: exynos_drm_crtc.c プロジェクト: Anjali05/linux
void exynos_crtc_handle_event(struct exynos_drm_crtc *exynos_crtc)
{
	struct drm_crtc *crtc = &exynos_crtc->base;
	struct drm_pending_vblank_event *event = crtc->state->event;
	unsigned long flags;

	if (!event)
		return;
	crtc->state->event = NULL;

	WARN_ON(drm_crtc_vblank_get(crtc) != 0);

	spin_lock_irqsave(&crtc->dev->event_lock, flags);
	drm_crtc_arm_vblank_event(crtc, event);
	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
}
コード例 #16
0
ファイル: rcar_du_crtc.c プロジェクト: CadeLaRen/linux
static void rcar_du_crtc_atomic_begin(struct drm_crtc *crtc,
				      struct drm_crtc_state *old_crtc_state)
{
	struct drm_pending_vblank_event *event = crtc->state->event;
	struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
	struct drm_device *dev = rcrtc->crtc.dev;
	unsigned long flags;

	if (event) {
		WARN_ON(drm_crtc_vblank_get(crtc) != 0);

		spin_lock_irqsave(&dev->event_lock, flags);
		rcrtc->event = event;
		spin_unlock_irqrestore(&dev->event_lock, flags);
	}

	if (rcar_du_has(rcrtc->group->dev, RCAR_DU_FEATURE_VSP1_SOURCE))
		rcar_du_vsp_atomic_begin(rcrtc);
}
コード例 #17
0
ファイル: arcpgu_crtc.c プロジェクト: 513855417/linux
static void arc_pgu_crtc_atomic_begin(struct drm_crtc *crtc,
				      struct drm_crtc_state *state)
{
	struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc);
	unsigned long flags;

	if (crtc->state->event) {
		struct drm_pending_vblank_event *event = crtc->state->event;

		crtc->state->event = NULL;
		event->pipe = drm_crtc_index(crtc);

		WARN_ON(drm_crtc_vblank_get(crtc) != 0);

		spin_lock_irqsave(&crtc->dev->event_lock, flags);
		list_add_tail(&event->base.link, &arcpgu->event_list);
		spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
	}
}
コード例 #18
0
ファイル: fsl_dcu_drm_crtc.c プロジェクト: AshishNamdev/linux
static void fsl_dcu_drm_crtc_atomic_flush(struct drm_crtc *crtc,
					  struct drm_crtc_state *old_crtc_state)
{
	struct drm_device *dev = crtc->dev;
	struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
	struct drm_pending_vblank_event *event = crtc->state->event;

	regmap_write(fsl_dev->regmap,
		     DCU_UPDATE_MODE, DCU_UPDATE_MODE_READREG);

	if (event) {
		crtc->state->event = NULL;

		spin_lock_irq(&crtc->dev->event_lock);
		if (drm_crtc_vblank_get(crtc) == 0)
			drm_crtc_arm_vblank_event(crtc, event);
		else
			drm_crtc_send_vblank_event(crtc, event);
		spin_unlock_irq(&crtc->dev->event_lock);
	}
}
コード例 #19
0
ファイル: sun4i_crtc.c プロジェクト: AK101111/linux
static void sun4i_crtc_atomic_flush(struct drm_crtc *crtc,
				    struct drm_crtc_state *old_state)
{
	struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
	struct sun4i_drv *drv = scrtc->drv;
	struct drm_pending_vblank_event *event = crtc->state->event;

	DRM_DEBUG_DRIVER("Committing plane changes\n");

	sun4i_backend_commit(drv->backend);

	if (event) {
		crtc->state->event = NULL;

		spin_lock_irq(&crtc->dev->event_lock);
		if (drm_crtc_vblank_get(crtc) == 0)
			drm_crtc_arm_vblank_event(crtc, event);
		else
			drm_crtc_send_vblank_event(crtc, event);
		spin_unlock_irq(&crtc->dev->event_lock);
	}
}
コード例 #20
0
ファイル: exynos_drm_crtc.c プロジェクト: acton393/linux
static void exynos_crtc_atomic_flush(struct drm_crtc *crtc,
				     struct drm_crtc_state *old_crtc_state)
{
	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
	struct drm_pending_vblank_event *event;
	unsigned long flags;

	if (exynos_crtc->ops->atomic_flush)
		exynos_crtc->ops->atomic_flush(exynos_crtc);

	event = crtc->state->event;
	if (event) {
		crtc->state->event = NULL;

		spin_lock_irqsave(&crtc->dev->event_lock, flags);
		if (drm_crtc_vblank_get(crtc) == 0)
			drm_crtc_arm_vblank_event(crtc, event);
		else
			drm_crtc_send_vblank_event(crtc, event);
		spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
	}

}
コード例 #21
0
ファイル: drm_plane.c プロジェクト: ezequielgarcia/linux
static int drm_mode_cursor_universal(struct drm_crtc *crtc,
				     struct drm_mode_cursor2 *req,
				     struct drm_file *file_priv,
				     struct drm_modeset_acquire_ctx *ctx)
{
	struct drm_device *dev = crtc->dev;
	struct drm_plane *plane = crtc->cursor;
	struct drm_framebuffer *fb = NULL;
	struct drm_mode_fb_cmd2 fbreq = {
		.width = req->width,
		.height = req->height,
		.pixel_format = DRM_FORMAT_ARGB8888,
		.pitches = { req->width * 4 },
		.handles = { req->handle },
	};
	int32_t crtc_x, crtc_y;
	uint32_t crtc_w = 0, crtc_h = 0;
	uint32_t src_w = 0, src_h = 0;
	int ret = 0;

	BUG_ON(!plane);
	WARN_ON(plane->crtc != crtc && plane->crtc != NULL);

	/*
	 * Obtain fb we'll be using (either new or existing) and take an extra
	 * reference to it if fb != null.  setplane will take care of dropping
	 * the reference if the plane update fails.
	 */
	if (req->flags & DRM_MODE_CURSOR_BO) {
		if (req->handle) {
			fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv);
			if (IS_ERR(fb)) {
				DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
				return PTR_ERR(fb);
			}

			fb->hot_x = req->hot_x;
			fb->hot_y = req->hot_y;
		} else {
			fb = NULL;
		}
	} else {
		if (plane->state)
			fb = plane->state->fb;
		else
			fb = plane->fb;

		if (fb)
			drm_framebuffer_get(fb);
	}

	if (req->flags & DRM_MODE_CURSOR_MOVE) {
		crtc_x = req->x;
		crtc_y = req->y;
	} else {
		crtc_x = crtc->cursor_x;
		crtc_y = crtc->cursor_y;
	}

	if (fb) {
		crtc_w = fb->width;
		crtc_h = fb->height;
		src_w = fb->width << 16;
		src_h = fb->height << 16;
	}

	if (drm_drv_uses_atomic_modeset(dev))
		ret = __setplane_atomic(plane, crtc, fb,
					crtc_x, crtc_y, crtc_w, crtc_h,
					0, 0, src_w, src_h, ctx);
	else
		ret = __setplane_internal(plane, crtc, fb,
					  crtc_x, crtc_y, crtc_w, crtc_h,
					  0, 0, src_w, src_h, ctx);

	if (fb)
		drm_framebuffer_put(fb);

	/* Update successful; save new cursor position, if necessary */
	if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
		crtc->cursor_x = req->x;
		crtc->cursor_y = req->y;
	}

	return ret;
}

static int drm_mode_cursor_common(struct drm_device *dev,
				  struct drm_mode_cursor2 *req,
				  struct drm_file *file_priv)
{
	struct drm_crtc *crtc;
	struct drm_modeset_acquire_ctx ctx;
	int ret = 0;

	if (!drm_core_check_feature(dev, DRIVER_MODESET))
		return -EOPNOTSUPP;

	if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
		return -EINVAL;

	crtc = drm_crtc_find(dev, file_priv, req->crtc_id);
	if (!crtc) {
		DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
		return -ENOENT;
	}

	drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
retry:
	ret = drm_modeset_lock(&crtc->mutex, &ctx);
	if (ret)
		goto out;
	/*
	 * If this crtc has a universal cursor plane, call that plane's update
	 * handler rather than using legacy cursor handlers.
	 */
	if (crtc->cursor) {
		ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
		if (ret)
			goto out;

		ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx);
		goto out;
	}

	if (req->flags & DRM_MODE_CURSOR_BO) {
		if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
			ret = -ENXIO;
			goto out;
		}
		/* Turns off the cursor if handle is 0 */
		if (crtc->funcs->cursor_set2)
			ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
						      req->width, req->height, req->hot_x, req->hot_y);
		else
			ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
						      req->width, req->height);
	}

	if (req->flags & DRM_MODE_CURSOR_MOVE) {
		if (crtc->funcs->cursor_move) {
			ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
		} else {
			ret = -EFAULT;
			goto out;
		}
	}
out:
	if (ret == -EDEADLK) {
		ret = drm_modeset_backoff(&ctx);
		if (!ret)
			goto retry;
	}

	drm_modeset_drop_locks(&ctx);
	drm_modeset_acquire_fini(&ctx);

	return ret;

}


int drm_mode_cursor_ioctl(struct drm_device *dev,
			  void *data, struct drm_file *file_priv)
{
	struct drm_mode_cursor *req = data;
	struct drm_mode_cursor2 new_req;

	memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
	new_req.hot_x = new_req.hot_y = 0;

	return drm_mode_cursor_common(dev, &new_req, file_priv);
}

/*
 * Set the cursor configuration based on user request. This implements the 2nd
 * version of the cursor ioctl, which allows userspace to additionally specify
 * the hotspot of the pointer.
 */
int drm_mode_cursor2_ioctl(struct drm_device *dev,
			   void *data, struct drm_file *file_priv)
{
	struct drm_mode_cursor2 *req = data;

	return drm_mode_cursor_common(dev, req, file_priv);
}

int drm_mode_page_flip_ioctl(struct drm_device *dev,
			     void *data, struct drm_file *file_priv)
{
	struct drm_mode_crtc_page_flip_target *page_flip = data;
	struct drm_crtc *crtc;
	struct drm_plane *plane;
	struct drm_framebuffer *fb = NULL, *old_fb;
	struct drm_pending_vblank_event *e = NULL;
	u32 target_vblank = page_flip->sequence;
	struct drm_modeset_acquire_ctx ctx;
	int ret = -EINVAL;

	if (!drm_core_check_feature(dev, DRIVER_MODESET))
		return -EOPNOTSUPP;

	if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS)
		return -EINVAL;

	if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET))
		return -EINVAL;

	/* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags
	 * can be specified
	 */
	if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET)
		return -EINVAL;

	if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
		return -EINVAL;

	crtc = drm_crtc_find(dev, file_priv, page_flip->crtc_id);
	if (!crtc)
		return -ENOENT;

	plane = crtc->primary;

	if (crtc->funcs->page_flip_target) {
		u32 current_vblank;
		int r;

		r = drm_crtc_vblank_get(crtc);
		if (r)
			return r;

		current_vblank = (u32)drm_crtc_vblank_count(crtc);

		switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) {
		case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE:
			if ((int)(target_vblank - current_vblank) > 1) {
				DRM_DEBUG("Invalid absolute flip target %u, "
					  "must be <= %u\n", target_vblank,
					  current_vblank + 1);
				drm_crtc_vblank_put(crtc);
				return -EINVAL;
			}
			break;
		case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE:
			if (target_vblank != 0 && target_vblank != 1) {
				DRM_DEBUG("Invalid relative flip target %u, "
					  "must be 0 or 1\n", target_vblank);
				drm_crtc_vblank_put(crtc);
				return -EINVAL;
			}
			target_vblank += current_vblank;
			break;
		default:
			target_vblank = current_vblank +
				!(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC);
			break;
		}
	} else if (crtc->funcs->page_flip == NULL ||
		   (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) {
		return -EINVAL;
	}

	drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
retry:
	ret = drm_modeset_lock(&crtc->mutex, &ctx);
	if (ret)
		goto out;
	ret = drm_modeset_lock(&plane->mutex, &ctx);
	if (ret)
		goto out;

	if (plane->state)
		old_fb = plane->state->fb;
	else
		old_fb = plane->fb;

	if (old_fb == NULL) {
		/* The framebuffer is currently unbound, presumably
		 * due to a hotplug event, that userspace has not
		 * yet discovered.
		 */
		ret = -EBUSY;
		goto out;
	}

	fb = drm_framebuffer_lookup(dev, file_priv, page_flip->fb_id);
	if (!fb) {
		ret = -ENOENT;
		goto out;
	}

	if (plane->state) {
		const struct drm_plane_state *state = plane->state;

		ret = drm_framebuffer_check_src_coords(state->src_x,
						       state->src_y,
						       state->src_w,
						       state->src_h,
						       fb);
	} else {
		ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y,
					      &crtc->mode, fb);
	}
	if (ret)
		goto out;

	if (old_fb->format != fb->format) {
		DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
		ret = -EINVAL;
		goto out;
	}

	if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
		e = kzalloc(sizeof *e, GFP_KERNEL);
		if (!e) {
			ret = -ENOMEM;
			goto out;
		}

		e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
		e->event.base.length = sizeof(e->event);
		e->event.vbl.user_data = page_flip->user_data;
		e->event.vbl.crtc_id = crtc->base.id;

		ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
		if (ret) {
			kfree(e);
			e = NULL;
			goto out;
		}
	}

	plane->old_fb = plane->fb;
	if (crtc->funcs->page_flip_target)
		ret = crtc->funcs->page_flip_target(crtc, fb, e,
						    page_flip->flags,
						    target_vblank,
						    &ctx);
	else
		ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags,
					     &ctx);
	if (ret) {
		if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
			drm_event_cancel_free(dev, &e->base);
		/* Keep the old fb, don't unref it. */
		plane->old_fb = NULL;
	} else {
		if (!plane->state) {
			plane->fb = fb;
			drm_framebuffer_get(fb);
		}
	}

out:
	if (fb)
		drm_framebuffer_put(fb);
	if (plane->old_fb)
		drm_framebuffer_put(plane->old_fb);
	plane->old_fb = NULL;

	if (ret == -EDEADLK) {
		ret = drm_modeset_backoff(&ctx);
		if (!ret)
			goto retry;
	}

	drm_modeset_drop_locks(&ctx);
	drm_modeset_acquire_fini(&ctx);

	if (ret && crtc->funcs->page_flip_target)
		drm_crtc_vblank_put(crtc);

	return ret;
}
コード例 #22
0
ファイル: drm_plane_helper.c プロジェクト: AK101111/linux
/**
 * drm_primary_helper_update() - Helper for primary plane update
 * @plane: plane object to update
 * @crtc: owning CRTC of owning plane
 * @fb: framebuffer to flip onto plane
 * @crtc_x: x offset of primary plane on crtc
 * @crtc_y: y offset of primary plane on crtc
 * @crtc_w: width of primary plane rectangle on crtc
 * @crtc_h: height of primary plane rectangle on crtc
 * @src_x: x offset of @fb for panning
 * @src_y: y offset of @fb for panning
 * @src_w: width of source rectangle in @fb
 * @src_h: height of source rectangle in @fb
 *
 * Provides a default plane update handler for primary planes.  This is handler
 * is called in response to a userspace SetPlane operation on the plane with a
 * non-NULL framebuffer.  We call the driver's modeset handler to update the
 * framebuffer.
 *
 * SetPlane() on a primary plane of a disabled CRTC is not supported, and will
 * return an error.
 *
 * Note that we make some assumptions about hardware limitations that may not be
 * true for all hardware --
 *
 * 1. Primary plane cannot be repositioned.
 * 2. Primary plane cannot be scaled.
 * 3. Primary plane must cover the entire CRTC.
 * 4. Subpixel positioning is not supported.
 *
 * Drivers for hardware that don't have these restrictions can provide their
 * own implementation rather than using this helper.
 *
 * RETURNS:
 * Zero on success, error code on failure
 */
int drm_primary_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
			      struct drm_framebuffer *fb,
			      int crtc_x, int crtc_y,
			      unsigned int crtc_w, unsigned int crtc_h,
			      uint32_t src_x, uint32_t src_y,
			      uint32_t src_w, uint32_t src_h)
{
	struct drm_mode_set set = {
		.crtc = crtc,
		.fb = fb,
		.mode = &crtc->mode,
		.x = src_x >> 16,
		.y = src_y >> 16,
	};
	struct drm_rect src = {
		.x1 = src_x,
		.y1 = src_y,
		.x2 = src_x + src_w,
		.y2 = src_y + src_h,
	};
	struct drm_rect dest = {
		.x1 = crtc_x,
		.y1 = crtc_y,
		.x2 = crtc_x + crtc_w,
		.y2 = crtc_y + crtc_h,
	};
	const struct drm_rect clip = {
		.x2 = crtc->mode.hdisplay,
		.y2 = crtc->mode.vdisplay,
	};
	struct drm_connector **connector_list;
	int num_connectors, ret;
	bool visible;

	ret = drm_plane_helper_check_update(plane, crtc, fb,
					    &src, &dest, &clip,
					    BIT(DRM_ROTATE_0),
					    DRM_PLANE_HELPER_NO_SCALING,
					    DRM_PLANE_HELPER_NO_SCALING,
					    false, false, &visible);
	if (ret)
		return ret;

	if (!visible)
		/*
		 * Primary plane isn't visible.  Note that unless a driver
		 * provides their own disable function, this will just
		 * wind up returning -EINVAL to userspace.
		 */
		return plane->funcs->disable_plane(plane);

	/* Find current connectors for CRTC */
	num_connectors = get_connectors_for_crtc(crtc, NULL, 0);
	BUG_ON(num_connectors == 0);
	connector_list = kzalloc(num_connectors * sizeof(*connector_list),
				 GFP_KERNEL);
	if (!connector_list)
		return -ENOMEM;
	get_connectors_for_crtc(crtc, connector_list, num_connectors);

	set.connectors = connector_list;
	set.num_connectors = num_connectors;

	/*
	 * We call set_config() directly here rather than using
	 * drm_mode_set_config_internal.  We're reprogramming the same
	 * connectors that were already in use, so we shouldn't need the extra
	 * cross-CRTC fb refcounting to accomodate stealing connectors.
	 * drm_mode_setplane() already handles the basic refcounting for the
	 * framebuffers involved in this operation.
	 */
	ret = crtc->funcs->set_config(&set);

	kfree(connector_list);
	return ret;
}
EXPORT_SYMBOL(drm_primary_helper_update);

/**
 * drm_primary_helper_disable() - Helper for primary plane disable
 * @plane: plane to disable
 *
 * Provides a default plane disable handler for primary planes.  This is handler
 * is called in response to a userspace SetPlane operation on the plane with a
 * NULL framebuffer parameter.  It unconditionally fails the disable call with
 * -EINVAL the only way to disable the primary plane without driver support is
 * to disable the entier CRTC. Which does not match the plane ->disable hook.
 *
 * Note that some hardware may be able to disable the primary plane without
 * disabling the whole CRTC.  Drivers for such hardware should provide their
 * own disable handler that disables just the primary plane (and they'll likely
 * need to provide their own update handler as well to properly re-enable a
 * disabled primary plane).
 *
 * RETURNS:
 * Unconditionally returns -EINVAL.
 */
int drm_primary_helper_disable(struct drm_plane *plane)
{
	return -EINVAL;
}
EXPORT_SYMBOL(drm_primary_helper_disable);

/**
 * drm_primary_helper_destroy() - Helper for primary plane destruction
 * @plane: plane to destroy
 *
 * Provides a default plane destroy handler for primary planes.  This handler
 * is called during CRTC destruction.  We disable the primary plane, remove
 * it from the DRM plane list, and deallocate the plane structure.
 */
void drm_primary_helper_destroy(struct drm_plane *plane)
{
	drm_plane_cleanup(plane);
	kfree(plane);
}
EXPORT_SYMBOL(drm_primary_helper_destroy);

const struct drm_plane_funcs drm_primary_helper_funcs = {
	.update_plane = drm_primary_helper_update,
	.disable_plane = drm_primary_helper_disable,
	.destroy = drm_primary_helper_destroy,
};
EXPORT_SYMBOL(drm_primary_helper_funcs);

static struct drm_plane *create_primary_plane(struct drm_device *dev)
{
	struct drm_plane *primary;
	int ret;

	primary = kzalloc(sizeof(*primary), GFP_KERNEL);
	if (primary == NULL) {
		DRM_DEBUG_KMS("Failed to allocate primary plane\n");
		return NULL;
	}

	/*
	 * Remove the format_default field from drm_plane when dropping
	 * this helper.
	 */
	primary->format_default = true;

	/* possible_crtc's will be filled in later by crtc_init */
	ret = drm_universal_plane_init(dev, primary, 0,
				       &drm_primary_helper_funcs,
				       safe_modeset_formats,
				       ARRAY_SIZE(safe_modeset_formats),
				       DRM_PLANE_TYPE_PRIMARY, NULL);
	if (ret) {
		kfree(primary);
		primary = NULL;
	}

	return primary;
}

/**
 * drm_crtc_init - Legacy CRTC initialization function
 * @dev: DRM device
 * @crtc: CRTC object to init
 * @funcs: callbacks for the new CRTC
 *
 * Initialize a CRTC object with a default helper-provided primary plane and no
 * cursor plane.
 *
 * Returns:
 * Zero on success, error code on failure.
 */
int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
		  const struct drm_crtc_funcs *funcs)
{
	struct drm_plane *primary;

	primary = create_primary_plane(dev);
	return drm_crtc_init_with_planes(dev, crtc, primary, NULL, funcs,
					 NULL);
}
EXPORT_SYMBOL(drm_crtc_init);

int drm_plane_helper_commit(struct drm_plane *plane,
			    struct drm_plane_state *plane_state,
			    struct drm_framebuffer *old_fb)
{
	const struct drm_plane_helper_funcs *plane_funcs;
	struct drm_crtc *crtc[2];
	const struct drm_crtc_helper_funcs *crtc_funcs[2];
	int i, ret = 0;

	plane_funcs = plane->helper_private;

	/* Since this is a transitional helper we can't assume that plane->state
	 * is always valid. Hence we need to use plane->crtc instead of
	 * plane->state->crtc as the old crtc. */
	crtc[0] = plane->crtc;
	crtc[1] = crtc[0] != plane_state->crtc ? plane_state->crtc : NULL;

	for (i = 0; i < 2; i++)
		crtc_funcs[i] = crtc[i] ? crtc[i]->helper_private : NULL;

	if (plane_funcs->atomic_check) {
		ret = plane_funcs->atomic_check(plane, plane_state);
		if (ret)
			goto out;
	}

	if (plane_funcs->prepare_fb && plane_state->fb &&
	    plane_state->fb != old_fb) {
		ret = plane_funcs->prepare_fb(plane,
					      plane_state);
		if (ret)
			goto out;
	}

	/* Point of no return, commit sw state. */
	swap(plane->state, plane_state);

	for (i = 0; i < 2; i++) {
		if (crtc_funcs[i] && crtc_funcs[i]->atomic_begin)
			crtc_funcs[i]->atomic_begin(crtc[i], crtc[i]->state);
	}

	/*
	 * Drivers may optionally implement the ->atomic_disable callback, so
	 * special-case that here.
	 */
	if (drm_atomic_plane_disabling(plane, plane_state) &&
	    plane_funcs->atomic_disable)
		plane_funcs->atomic_disable(plane, plane_state);
	else
		plane_funcs->atomic_update(plane, plane_state);

	for (i = 0; i < 2; i++) {
		if (crtc_funcs[i] && crtc_funcs[i]->atomic_flush)
			crtc_funcs[i]->atomic_flush(crtc[i], crtc[i]->state);
	}

	/*
	 * If we only moved the plane and didn't change fb's, there's no need to
	 * wait for vblank.
	 */
	if (plane->state->fb == old_fb)
		goto out;

	for (i = 0; i < 2; i++) {
		if (!crtc[i])
			continue;

		if (crtc[i]->cursor == plane)
			continue;

		/* There's no other way to figure out whether the crtc is running. */
		ret = drm_crtc_vblank_get(crtc[i]);
		if (ret == 0) {
			drm_crtc_wait_one_vblank(crtc[i]);
			drm_crtc_vblank_put(crtc[i]);
		}

		ret = 0;
	}

	if (plane_funcs->cleanup_fb)
		plane_funcs->cleanup_fb(plane, plane_state);
out:
	if (plane_state) {
		if (plane->funcs->atomic_destroy_state)
			plane->funcs->atomic_destroy_state(plane, plane_state);
		else
			drm_atomic_helper_plane_destroy_state(plane, plane_state);
	}

	return ret;
}

/**
 * drm_plane_helper_update() - Transitional helper for plane update
 * @plane: plane object to update
 * @crtc: owning CRTC of owning plane
 * @fb: framebuffer to flip onto plane
 * @crtc_x: x offset of primary plane on crtc
 * @crtc_y: y offset of primary plane on crtc
 * @crtc_w: width of primary plane rectangle on crtc
 * @crtc_h: height of primary plane rectangle on crtc
 * @src_x: x offset of @fb for panning
 * @src_y: y offset of @fb for panning
 * @src_w: width of source rectangle in @fb
 * @src_h: height of source rectangle in @fb
 *
 * Provides a default plane update handler using the atomic plane update
 * functions. It is fully left to the driver to check plane constraints and
 * handle corner-cases like a fully occluded or otherwise invisible plane.
 *
 * This is useful for piecewise transitioning of a driver to the atomic helpers.
 *
 * RETURNS:
 * Zero on success, error code on failure
 */
int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
			    struct drm_framebuffer *fb,
			    int crtc_x, int crtc_y,
			    unsigned int crtc_w, unsigned int crtc_h,
			    uint32_t src_x, uint32_t src_y,
			    uint32_t src_w, uint32_t src_h)
{
	struct drm_plane_state *plane_state;

	if (plane->funcs->atomic_duplicate_state)
		plane_state = plane->funcs->atomic_duplicate_state(plane);
	else {
		if (!plane->state)
			drm_atomic_helper_plane_reset(plane);

		plane_state = drm_atomic_helper_plane_duplicate_state(plane);
	}
	if (!plane_state)
		return -ENOMEM;
	plane_state->plane = plane;

	plane_state->crtc = crtc;
	drm_atomic_set_fb_for_plane(plane_state, fb);
	plane_state->crtc_x = crtc_x;
	plane_state->crtc_y = crtc_y;
	plane_state->crtc_h = crtc_h;
	plane_state->crtc_w = crtc_w;
	plane_state->src_x = src_x;
	plane_state->src_y = src_y;
	plane_state->src_h = src_h;
	plane_state->src_w = src_w;

	return drm_plane_helper_commit(plane, plane_state, plane->fb);
}
EXPORT_SYMBOL(drm_plane_helper_update);

/**
 * drm_plane_helper_disable() - Transitional helper for plane disable
 * @plane: plane to disable
 *
 * Provides a default plane disable handler using the atomic plane update
 * functions. It is fully left to the driver to check plane constraints and
 * handle corner-cases like a fully occluded or otherwise invisible plane.
 *
 * This is useful for piecewise transitioning of a driver to the atomic helpers.
 *
 * RETURNS:
 * Zero on success, error code on failure
 */
int drm_plane_helper_disable(struct drm_plane *plane)
{
	struct drm_plane_state *plane_state;

	/* crtc helpers love to call disable functions for already disabled hw
	 * functions. So cope with that. */
	if (!plane->crtc)
		return 0;

	if (plane->funcs->atomic_duplicate_state)
		plane_state = plane->funcs->atomic_duplicate_state(plane);
	else {
		if (!plane->state)
			drm_atomic_helper_plane_reset(plane);

		plane_state = drm_atomic_helper_plane_duplicate_state(plane);
	}
	if (!plane_state)
		return -ENOMEM;
	plane_state->plane = plane;

	plane_state->crtc = NULL;
	drm_atomic_set_fb_for_plane(plane_state, NULL);

	return drm_plane_helper_commit(plane, plane_state, plane->fb);
}
EXPORT_SYMBOL(drm_plane_helper_disable);