示例#1
0
static void intel_destroy_plane(struct drm_plane *plane)
{
	struct intel_plane *intel_plane = to_intel_plane(plane);
	intel_disable_plane(plane);
	drm_plane_cleanup(plane);
	free(intel_plane, DRM_MEM_KMS);
}
示例#2
0
/* destroy a plane */
static void xilinx_drm_plane_destroy(struct drm_plane *base_plane)
{
	struct xilinx_drm_plane *plane = to_xilinx_plane(base_plane);
	unsigned int i;

	xilinx_drm_plane_dpms(base_plane, DRM_MODE_DPMS_OFF);

	plane->manager->planes[plane->id] = NULL;

	drm_plane_cleanup(base_plane);

	for (i = 0; i < MAX_NUM_SUB_PLANES; i++)
		if (plane->dma[i].chan)
			dma_release_channel(plane->dma[i].chan);

	if (plane->manager->osd) {
		xilinx_osd_layer_disable(plane->osd_layer);
		xilinx_osd_layer_put(plane->osd_layer);
	}

	if (plane->manager->dp_sub) {
		xilinx_drm_dp_sub_layer_disable(plane->manager->dp_sub,
						plane->dp_layer);
		xilinx_drm_dp_sub_layer_put(plane->manager->dp_sub,
					    plane->dp_layer);
	}
}
示例#3
0
static void sti_hqvdp_destroy(struct drm_plane *drm_plane)
{
	DRM_DEBUG_DRIVER("\n");

	drm_plane_helper_disable(drm_plane);
	drm_plane_cleanup(drm_plane);
}
示例#4
0
static void omap_plane_destroy(struct drm_plane *plane)
{
	struct omap_plane *omap_plane = to_omap_plane(plane);
	DBG("%s", omap_plane->ovl->name);
	omap_plane_disable(plane);
	drm_plane_cleanup(plane);
	kfree(omap_plane);
}
示例#5
0
static void mdp4_plane_destroy(struct drm_plane *plane)
{
	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);

	mdp4_plane_disable(plane);
	drm_plane_cleanup(plane);

	kfree(mdp4_plane);
}
示例#6
0
static void omap_plane_destroy(struct drm_plane *plane)
{
	struct omap_plane *omap_plane = to_omap_plane(plane);

	DBG("%s", omap_plane->name);

	omap_irq_unregister(plane->dev, &omap_plane->error_irq);

	omap_plane_disable(plane);
	drm_plane_cleanup(plane);

	WARN_ON(!kfifo_is_empty(&omap_plane->unpin_fifo));
	kfifo_free(&omap_plane->unpin_fifo);

	kfree(omap_plane);
}
/* destroy a plane */
static void xilinx_drm_plane_destroy(struct drm_plane *base_plane)
{
	struct xilinx_drm_plane *plane = to_xilinx_plane(base_plane);

	xilinx_drm_plane_dpms(base_plane, DRM_MODE_DPMS_OFF);

	plane->manager->planes[plane->id] = NULL;

	drm_plane_cleanup(base_plane);

	dma_release_channel(plane->dma.chan);

	if (plane->manager->osd) {
		xilinx_osd_layer_disable(plane->osd_layer);
		xilinx_osd_layer_put(plane->osd_layer);
	}
}
示例#8
0
static void virtio_gpu_plane_destroy(struct drm_plane *plane)
{
	drm_plane_cleanup(plane);
	kfree(plane);
}
示例#9
0
/**
 * 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);
示例#10
0
static void hdlcd_plane_destroy(struct drm_plane *plane)
{
	drm_plane_helper_disable(plane);
	drm_plane_cleanup(plane);
}
示例#11
0
static void fsl_dcu_drm_plane_destroy(struct drm_plane *plane)
{
	drm_plane_cleanup(plane);
}
示例#12
0
int vkms_output_init(struct vkms_device *vkmsdev)
{
	struct vkms_output *output = &vkmsdev->output;
	struct drm_device *dev = &vkmsdev->drm;
	struct drm_connector *connector = &output->connector;
	struct drm_encoder *encoder = &output->encoder;
	struct drm_crtc *crtc = &output->crtc;
	struct drm_plane *primary, *cursor = NULL;
	int ret;

	primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY);
	if (IS_ERR(primary))
		return PTR_ERR(primary);

	if (enable_cursor) {
		cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR);
		if (IS_ERR(cursor)) {
			ret = PTR_ERR(cursor);
			goto err_cursor;
		}
	}

	ret = vkms_crtc_init(dev, crtc, primary, cursor);
	if (ret)
		goto err_crtc;

	ret = drm_connector_init(dev, connector, &vkms_connector_funcs,
				 DRM_MODE_CONNECTOR_VIRTUAL);
	if (ret) {
		DRM_ERROR("Failed to init connector\n");
		goto err_connector;
	}

	drm_connector_helper_add(connector, &vkms_conn_helper_funcs);

	ret = drm_connector_register(connector);
	if (ret) {
		DRM_ERROR("Failed to register connector\n");
		goto err_connector_register;
	}

	ret = drm_encoder_init(dev, encoder, &vkms_encoder_funcs,
			       DRM_MODE_ENCODER_VIRTUAL, NULL);
	if (ret) {
		DRM_ERROR("Failed to init encoder\n");
		goto err_encoder;
	}
	encoder->possible_crtcs = 1;

	ret = drm_connector_attach_encoder(connector, encoder);
	if (ret) {
		DRM_ERROR("Failed to attach connector to encoder\n");
		goto err_attach;
	}

	drm_mode_config_reset(dev);

	return 0;

err_attach:
	drm_encoder_cleanup(encoder);

err_encoder:
	drm_connector_unregister(connector);

err_connector_register:
	drm_connector_cleanup(connector);

err_connector:
	drm_crtc_cleanup(crtc);

err_crtc:
	if (enable_cursor)
		drm_plane_cleanup(cursor);

err_cursor:
	drm_plane_cleanup(primary);

	return ret;
}
/**
 * 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;
	struct drm_framebuffer *tmpfb;
	int num_connectors, ret;
	bool visible;

	ret = drm_plane_helper_check_update(plane, crtc, fb,
					    &src, &dest, &clip,
					    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;

	/*
	 * set_config() adjusts crtc->primary->fb; however the DRM setplane
	 * code that called us expects to handle the framebuffer update and
	 * reference counting; save and restore the current fb before
	 * calling it.
	 *
	 * N.B., 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.
	 */
	tmpfb = plane->fb;
	ret = crtc->funcs->set_config(&set);
	plane->fb = tmpfb;

	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);

/**
 * drm_primary_helper_create_plane() - Create a generic primary plane
 * @dev: drm device
 * @formats: pixel formats supported, or NULL for a default safe list
 * @num_formats: size of @formats; ignored if @formats is NULL
 *
 * Allocates and initializes a primary plane that can be used with the primary
 * plane helpers.  Drivers that wish to use driver-specific plane structures or
 * provide custom handler functions may perform their own allocation and
 * initialization rather than calling this function.
 */
struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
						  const uint32_t *formats,
						  int num_formats)
{
	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;
	}

	if (formats == NULL) {
		formats = safe_modeset_formats;
		num_formats = ARRAY_SIZE(safe_modeset_formats);
	}

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

	return primary;
}
EXPORT_SYMBOL(drm_primary_helper_create_plane);

/**
 * 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 = drm_primary_helper_create_plane(dev, NULL, 0);
	return drm_crtc_init_with_planes(dev, crtc, primary, NULL, funcs);
}
EXPORT_SYMBOL(drm_crtc_init);
示例#14
0
文件: vmwgfx_scrn.c 项目: Lyude/linux
static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
{
	struct vmw_screen_object_unit *sou;
	struct drm_device *dev = dev_priv->dev;
	struct drm_connector *connector;
	struct drm_encoder *encoder;
	struct drm_plane *primary, *cursor;
	struct drm_crtc *crtc;
	int ret;

	sou = kzalloc(sizeof(*sou), GFP_KERNEL);
	if (!sou)
		return -ENOMEM;

	sou->base.unit = unit;
	crtc = &sou->base.crtc;
	encoder = &sou->base.encoder;
	connector = &sou->base.connector;
	primary = &sou->base.primary;
	cursor = &sou->base.cursor;

	sou->base.active_implicit = false;
	sou->base.pref_active = (unit == 0);
	sou->base.pref_width = dev_priv->initial_width;
	sou->base.pref_height = dev_priv->initial_height;
	sou->base.pref_mode = NULL;

	/*
	 * Remove this after enabling atomic because property values can
	 * only exist in a state object
	 */
	sou->base.is_implicit = false;

	/* Initialize primary plane */
	vmw_du_plane_reset(primary);

	ret = drm_universal_plane_init(dev, &sou->base.primary,
				       0, &vmw_sou_plane_funcs,
				       vmw_primary_plane_formats,
				       ARRAY_SIZE(vmw_primary_plane_formats),
				       NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize primary plane");
		goto err_free;
	}

	drm_plane_helper_add(primary, &vmw_sou_primary_plane_helper_funcs);

	/* Initialize cursor plane */
	vmw_du_plane_reset(cursor);

	ret = drm_universal_plane_init(dev, &sou->base.cursor,
			0, &vmw_sou_cursor_funcs,
			vmw_cursor_plane_formats,
			ARRAY_SIZE(vmw_cursor_plane_formats),
			NULL, DRM_PLANE_TYPE_CURSOR, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize cursor plane");
		drm_plane_cleanup(&sou->base.primary);
		goto err_free;
	}

	drm_plane_helper_add(cursor, &vmw_sou_cursor_plane_helper_funcs);

	vmw_du_connector_reset(connector);
	ret = drm_connector_init(dev, connector, &vmw_sou_connector_funcs,
				 DRM_MODE_CONNECTOR_VIRTUAL);
	if (ret) {
		DRM_ERROR("Failed to initialize connector\n");
		goto err_free;
	}

	drm_connector_helper_add(connector, &vmw_sou_connector_helper_funcs);
	connector->status = vmw_du_connector_detect(connector, true);
	vmw_connector_state_to_vcs(connector->state)->is_implicit = false;


	ret = drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
			       DRM_MODE_ENCODER_VIRTUAL, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize encoder\n");
		goto err_free_connector;
	}

	(void) drm_connector_attach_encoder(connector, encoder);
	encoder->possible_crtcs = (1 << unit);
	encoder->possible_clones = 0;

	ret = drm_connector_register(connector);
	if (ret) {
		DRM_ERROR("Failed to register connector\n");
		goto err_free_encoder;
	}


	vmw_du_crtc_reset(crtc);
	ret = drm_crtc_init_with_planes(dev, crtc, &sou->base.primary,
					&sou->base.cursor,
					&vmw_screen_object_crtc_funcs, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize CRTC\n");
		goto err_free_unregister;
	}

	drm_crtc_helper_add(crtc, &vmw_sou_crtc_helper_funcs);

	drm_mode_crtc_set_gamma_size(crtc, 256);

	drm_object_attach_property(&connector->base,
				   dev_priv->hotplug_mode_update_property, 1);
	drm_object_attach_property(&connector->base,
				   dev->mode_config.suggested_x_property, 0);
	drm_object_attach_property(&connector->base,
				   dev->mode_config.suggested_y_property, 0);
	if (dev_priv->implicit_placement_property)
		drm_object_attach_property
			(&connector->base,
			 dev_priv->implicit_placement_property,
			 sou->base.is_implicit);

	return 0;

err_free_unregister:
	drm_connector_unregister(connector);
err_free_encoder:
	drm_encoder_cleanup(encoder);
err_free_connector:
	drm_connector_cleanup(connector);
err_free:
	kfree(sou);
	return ret;
}