コード例 #1
0
/* create encoders for each manager */
static int create_encoder(struct drm_device *dev,
		struct omap_overlay_manager *mgr)
{
	struct omap_drm_private *priv = dev->dev_private;
	struct drm_encoder *encoder = omap_encoder_init(dev, mgr);

	if (!encoder) {
		dev_err(dev->dev, "could not create encoder: %s\n",
				mgr->name);
		return -ENOMEM;
	}

	BUG_ON(priv->num_encoders >= ARRAY_SIZE(priv->encoders));

	priv->encoders[priv->num_encoders++] = encoder;

	return 0;
}
コード例 #2
0
static int omap_modeset_init(struct drm_device *dev)
{
	struct omap_drm_private *priv = dev->dev_private;
	struct omap_dss_device *dssdev = NULL;
	int num_ovls = dss_feat_get_num_ovls();
	int num_mgrs = dss_feat_get_num_mgrs();
	int num_crtcs;
	int i, id = 0;

	drm_mode_config_init(dev);

	omap_drm_irq_install(dev);

	/*
	 * We usually don't want to create a CRTC for each manager, at least
	 * not until we have a way to expose private planes to userspace.
	 * Otherwise there would not be enough video pipes left for drm planes.
	 * We use the num_crtc argument to limit the number of crtcs we create.
	 */
	num_crtcs = min3(num_crtc, num_mgrs, num_ovls);

	dssdev = NULL;

	for_each_dss_dev(dssdev) {
		struct drm_connector *connector;
		struct drm_encoder *encoder;
		enum omap_channel channel;
		struct omap_overlay_manager *mgr;

		if (!omapdss_device_is_connected(dssdev))
			continue;

		encoder = omap_encoder_init(dev, dssdev);

		if (!encoder) {
			dev_err(dev->dev, "could not create encoder: %s\n",
					dssdev->name);
			return -ENOMEM;
		}

		connector = omap_connector_init(dev,
				get_connector_type(dssdev), dssdev, encoder);

		if (!connector) {
			dev_err(dev->dev, "could not create connector: %s\n",
					dssdev->name);
			return -ENOMEM;
		}

		BUG_ON(priv->num_encoders >= ARRAY_SIZE(priv->encoders));
		BUG_ON(priv->num_connectors >= ARRAY_SIZE(priv->connectors));

		priv->encoders[priv->num_encoders++] = encoder;
		priv->connectors[priv->num_connectors++] = connector;

		drm_mode_connector_attach_encoder(connector, encoder);

		/*
		 * if we have reached the limit of the crtcs we are allowed to
		 * create, let's not try to look for a crtc for this
		 * panel/encoder and onwards, we will, of course, populate the
		 * the possible_crtcs field for all the encoders with the final
		 * set of crtcs we create
		 */
		if (id == num_crtcs)
			continue;

		/*
		 * get the recommended DISPC channel for this encoder. For now,
		 * we only try to get create a crtc out of the recommended, the
		 * other possible channels to which the encoder can connect are
		 * not considered.
		 */

		mgr = omapdss_find_mgr_from_display(dssdev);
		channel = mgr->id;
		/*
		 * if this channel hasn't already been taken by a previously
		 * allocated crtc, we create a new crtc for it
		 */
		if (!channel_used(dev, channel)) {
			struct drm_plane *plane;
			struct drm_crtc *crtc;

			plane = omap_plane_init(dev, id, true);
			crtc = omap_crtc_init(dev, plane, channel, id);

			BUG_ON(priv->num_crtcs >= ARRAY_SIZE(priv->crtcs));
			priv->crtcs[id] = crtc;
			priv->num_crtcs++;

			priv->planes[id] = plane;
			priv->num_planes++;

			id++;
		}
	}

	/*
	 * we have allocated crtcs according to the need of the panels/encoders,
	 * adding more crtcs here if needed
	 */
	for (; id < num_crtcs; id++) {

		/* find a free manager for this crtc */
		for (i = 0; i < num_mgrs; i++) {
			if (!channel_used(dev, i)) {
				struct drm_plane *plane;
				struct drm_crtc *crtc;

				plane = omap_plane_init(dev, id, true);
				crtc = omap_crtc_init(dev, plane, i, id);

				BUG_ON(priv->num_crtcs >=
					ARRAY_SIZE(priv->crtcs));

				priv->crtcs[id] = crtc;
				priv->num_crtcs++;

				priv->planes[id] = plane;
				priv->num_planes++;

				break;
			} else {
				continue;
			}
		}

		if (i == num_mgrs) {
			/* this shouldn't really happen */
			dev_err(dev->dev, "no managers left for crtc\n");
			return -ENOMEM;
		}
	}

	/*
	 * Create normal planes for the remaining overlays:
	 */
	for (; id < num_ovls; id++) {
		struct drm_plane *plane = omap_plane_init(dev, id, false);

		BUG_ON(priv->num_planes >= ARRAY_SIZE(priv->planes));
		priv->planes[priv->num_planes++] = plane;
	}

	for (i = 0; i < priv->num_encoders; i++) {
		struct drm_encoder *encoder = priv->encoders[i];
		struct omap_dss_device *dssdev =
					omap_encoder_get_dssdev(encoder);
		struct omap_dss_device *output;

		output = omapdss_find_output_from_display(dssdev);

		/* figure out which crtc's we can connect the encoder to: */
		encoder->possible_crtcs = 0;
		for (id = 0; id < priv->num_crtcs; id++) {
			struct drm_crtc *crtc = priv->crtcs[id];
			enum omap_channel crtc_channel;

			crtc_channel = omap_crtc_channel(crtc);

			if (output->dispc_channel == crtc_channel) {
				encoder->possible_crtcs |= (1 << id);
				break;
			}
		}

		omap_dss_put_device(output);
	}

	DBG("registered %d planes, %d crtcs, %d encoders and %d connectors\n",
		priv->num_planes, priv->num_crtcs, priv->num_encoders,
		priv->num_connectors);

	dev->mode_config.min_width = 32;
	dev->mode_config.min_height = 32;

	/* note: eventually will need some cpu_is_omapXYZ() type stuff here
	 * to fill in these limits properly on different OMAP generations..
	 */
	dev->mode_config.max_width = 2048;
	dev->mode_config.max_height = 2048;

	dev->mode_config.funcs = &omap_mode_config_funcs;

	return 0;
}
コード例 #3
0
static int omap_modeset_init(struct drm_device *dev)
{
	const struct omap_gpu_platform_data *pdata = dev->dev->platform_data;
	struct omap_gpu_private *priv = dev->dev_private;
	struct omap_dss_device *dssdev = NULL;
	int i, j;
	unsigned int connected_connectors = 0;

	/* create encoders for each manager */
	int create_encoder(int i) {
		struct omap_overlay_manager *mgr = omap_dss_get_overlay_manager(i);
		struct drm_encoder *encoder = omap_encoder_init(dev, mgr);

		if (!encoder) {
			dev_err(dev->dev, "could not create encoder\n");
			return -ENOMEM;
		}

		priv->encoders[priv->num_encoders++] = encoder;

		return 0;
	}

	/* create connectors for each display device */
	int create_connector(struct omap_dss_device *dssdev) {
		static struct notifier_block *notifier;
		struct drm_connector *connector;

		if (!dssdev->driver) {
			dev_warn(dev->dev, "%s has no driver.. skipping it\n",
					dssdev->name);
			return 0;
		}

		if (!(dssdev->driver->get_timings || dssdev->driver->get_edid)) {
			dev_warn(dev->dev, "%s driver does not support "
					"get_timings or get_edid.. skipping it!\n",
					dssdev->name);
			return 0;
		}

		connector = omap_connector_init(dev,
				get_connector_type(dssdev->type), dssdev);

		if (!connector) {
			dev_err(dev->dev, "could not create connector\n");
			return -ENOMEM;
		}

		/* track what is already connected.. rather than looping thru all
		 * connectors twice later, first for connected then for remainder
		 * (which could be a race condition if connected status changes)
		 */
		if (omap_connector_detect (connector) == connector_status_connected) {
			connected_connectors |= (1 << priv->num_connectors);
		}

		priv->connectors[priv->num_connectors++] = connector;

		notifier = kzalloc(sizeof(struct notifier_block), GFP_KERNEL);
		notifier->notifier_call = omap_gpu_notifier;
		omap_dss_add_notify(dssdev, notifier);

		for (j = 0; j < priv->num_encoders; j++) {
			struct omap_overlay_manager *mgr =
					omap_encoder_get_manager(priv->encoders[j]);
			if (mgr->device == dssdev) {
				drm_mode_connector_attach_encoder(connector,
						priv->encoders[j]);
			}
		}

		return 0;
	}

	/* create up to max_overlays CRTCs mapping to overlays.. by default,
	 * connect the overlays to different managers/encoders, giving priority
	 * to encoders connected to connectors with a detected connection
	 */
	int create_crtc(int i) {
		struct omap_overlay *ovl = omap_dss_get_overlay(i);
		struct omap_overlay_manager *mgr = NULL;
		struct drm_crtc *crtc;

		if (ovl->manager) {
			DBG("disconnecting %s from %s", ovl->name, ovl->manager->name);
			ovl->unset_manager(ovl);
		}

		/* find next best connector... ones with detected connection first
		 */
		while (j < priv->num_connectors && !mgr) {
			if (connected_connectors & (1 << j)) {
				struct drm_encoder * encoder =
						omap_connector_attached_encoder (priv->connectors[j]);
				if (encoder) {
					mgr = omap_encoder_get_manager (encoder);
				}
			}
			j++;
		}

		/* if we couldn't find another connected connector, lets start looking
		 * at the unconnected connectors:
		 */
		while (j < 2 * priv->num_connectors && !mgr) {
			int idx = j - priv->num_connectors;
			if (!(connected_connectors & (1 << idx))) {
				struct drm_encoder * encoder =
						omap_connector_attached_encoder (priv->connectors[idx]);
				if (encoder) {
					mgr = omap_encoder_get_manager (encoder);
				}
			}
			j++;
		}

		if (mgr) {
			DBG("connecting %s to %s", ovl->name, mgr->name);
			ovl->set_manager(ovl, mgr);
		}

		crtc = omap_crtc_init(dev, ovl);

		if (!crtc) {
			dev_err(dev->dev, "could not create CRTC\n");
			return -ENOMEM;
		}

		priv->crtcs[priv->num_crtcs++] = crtc;

		return 0;
	}

	drm_mode_config_init(dev);

	if (pdata) {
		/* if platform data is provided by the board file, use it to control
		 * which overlays, managers, and devices we own.
		 */
		for (i = 0; i < pdata->mgr_cnt; i++) {
			if (create_encoder(pdata->mgr_ids[i])) {
				goto fail;
			}
		}

		for (i = 0; i < pdata->dev_cnt; i++) {
			int m(struct omap_dss_device *dssdev, void *data) {
				return ! strcmp(dssdev->name, data);
			}
			struct omap_dss_device *dssdev =
					omap_dss_find_device((void *)pdata->dev_names[i], m);
			if (!dssdev) {
				dev_warn(dev->dev, "no such dssdev: %s\n",
						pdata->dev_names[i]);
				continue;
			}
			if (create_connector(dssdev)) {
				goto fail;
			}
		}

		j = 0;
		for (i = 0; i < pdata->ovl_cnt; i++) {
			if (create_crtc(pdata->ovl_ids[i])) {
				goto fail;
			}
		}
	} else {
コード例 #4
0
ファイル: omap_drv.c プロジェクト: ReneNyffenegger/linux
static int omap_modeset_init(struct drm_device *dev)
{
	struct omap_drm_private *priv = dev->dev_private;
	struct omap_dss_device *dssdev = NULL;
	int num_ovls = priv->dispc_ops->get_num_ovls();
	int num_mgrs = priv->dispc_ops->get_num_mgrs();
	int num_crtcs, crtc_idx, plane_idx;
	int ret;
	u32 plane_crtc_mask;

	drm_mode_config_init(dev);

	ret = omap_modeset_init_properties(dev);
	if (ret < 0)
		return ret;

	/*
	 * This function creates exactly one connector, encoder, crtc,
	 * and primary plane per each connected dss-device. Each
	 * connector->encoder->crtc chain is expected to be separate
	 * and each crtc is connect to a single dss-channel. If the
	 * configuration does not match the expectations or exceeds
	 * the available resources, the configuration is rejected.
	 */
	num_crtcs = 0;
	for_each_dss_dev(dssdev)
		if (omapdss_device_is_connected(dssdev))
			num_crtcs++;

	if (num_crtcs > num_mgrs || num_crtcs > num_ovls ||
	    num_crtcs > ARRAY_SIZE(priv->crtcs) ||
	    num_crtcs > ARRAY_SIZE(priv->planes) ||
	    num_crtcs > ARRAY_SIZE(priv->encoders) ||
	    num_crtcs > ARRAY_SIZE(priv->connectors)) {
		dev_err(dev->dev, "%s(): Too many connected displays\n",
			__func__);
		return -EINVAL;
	}

	/* All planes can be put to any CRTC */
	plane_crtc_mask = (1 << num_crtcs) - 1;

	dssdev = NULL;

	crtc_idx = 0;
	plane_idx = 0;
	for_each_dss_dev(dssdev) {
		struct drm_connector *connector;
		struct drm_encoder *encoder;
		struct drm_plane *plane;
		struct drm_crtc *crtc;

		if (!omapdss_device_is_connected(dssdev))
			continue;

		encoder = omap_encoder_init(dev, dssdev);
		if (!encoder)
			return -ENOMEM;

		connector = omap_connector_init(dev,
				get_connector_type(dssdev), dssdev, encoder);
		if (!connector)
			return -ENOMEM;

		plane = omap_plane_init(dev, plane_idx, DRM_PLANE_TYPE_PRIMARY,
					plane_crtc_mask);
		if (IS_ERR(plane))
			return PTR_ERR(plane);

		crtc = omap_crtc_init(dev, plane, dssdev);
		if (IS_ERR(crtc))
			return PTR_ERR(crtc);

		drm_mode_connector_attach_encoder(connector, encoder);
		encoder->possible_crtcs = (1 << crtc_idx);

		priv->crtcs[priv->num_crtcs++] = crtc;
		priv->planes[priv->num_planes++] = plane;
		priv->encoders[priv->num_encoders++] = encoder;
		priv->connectors[priv->num_connectors++] = connector;

		plane_idx++;
		crtc_idx++;
	}

	/*
	 * Create normal planes for the remaining overlays:
	 */
	for (; plane_idx < num_ovls; plane_idx++) {
		struct drm_plane *plane;

		if (WARN_ON(priv->num_planes >= ARRAY_SIZE(priv->planes)))
			return -EINVAL;

		plane = omap_plane_init(dev, plane_idx, DRM_PLANE_TYPE_OVERLAY,
			plane_crtc_mask);
		if (IS_ERR(plane))
			return PTR_ERR(plane);

		priv->planes[priv->num_planes++] = plane;
	}

	DBG("registered %d planes, %d crtcs, %d encoders and %d connectors\n",
		priv->num_planes, priv->num_crtcs, priv->num_encoders,
		priv->num_connectors);

	dev->mode_config.min_width = 8;
	dev->mode_config.min_height = 2;

	/* note: eventually will need some cpu_is_omapXYZ() type stuff here
	 * to fill in these limits properly on different OMAP generations..
	 */
	dev->mode_config.max_width = 2048;
	dev->mode_config.max_height = 2048;

	dev->mode_config.funcs = &omap_mode_config_funcs;
	dev->mode_config.helper_private = &omap_mode_config_helper_funcs;

	drm_mode_config_reset(dev);

	omap_drm_irq_install(dev);

	return 0;
}
コード例 #5
0
ファイル: omap_drv.c プロジェクト: AiWinters/linux
static int omap_modeset_init(struct drm_device *dev)
{
	struct omap_drm_private *priv = dev->dev_private;
	struct omap_dss_device *dssdev = NULL;
	int num_ovls = dss_feat_get_num_ovls();
	int id;

	drm_mode_config_init(dev);

	omap_drm_irq_install(dev);

	/*
	 * Create private planes and CRTCs for the last NUM_CRTCs overlay
	 * plus manager:
	 */
	for (id = 0; id < min(num_crtc, num_ovls); id++) {
		struct drm_plane *plane;
		struct drm_crtc *crtc;

		plane = omap_plane_init(dev, id, true);
		crtc = omap_crtc_init(dev, plane, pipe2chan(id), id);

		BUG_ON(priv->num_crtcs >= ARRAY_SIZE(priv->crtcs));
		priv->crtcs[id] = crtc;
		priv->num_crtcs++;

		priv->planes[id] = plane;
		priv->num_planes++;
	}

	/*
	 * Create normal planes for the remaining overlays:
	 */
	for (; id < num_ovls; id++) {
		struct drm_plane *plane = omap_plane_init(dev, id, false);

		BUG_ON(priv->num_planes >= ARRAY_SIZE(priv->planes));
		priv->planes[priv->num_planes++] = plane;
	}

	for_each_dss_dev(dssdev) {
		struct drm_connector *connector;
		struct drm_encoder *encoder;

		if (!dssdev->driver) {
			dev_warn(dev->dev, "%s has no driver.. skipping it\n",
					dssdev->name);
			return 0;
		}

		if (!(dssdev->driver->get_timings ||
					dssdev->driver->read_edid)) {
			dev_warn(dev->dev, "%s driver does not support "
				"get_timings or read_edid.. skipping it!\n",
				dssdev->name);
			return 0;
		}

		encoder = omap_encoder_init(dev, dssdev);

		if (!encoder) {
			dev_err(dev->dev, "could not create encoder: %s\n",
					dssdev->name);
			return -ENOMEM;
		}

		connector = omap_connector_init(dev,
				get_connector_type(dssdev), dssdev, encoder);

		if (!connector) {
			dev_err(dev->dev, "could not create connector: %s\n",
					dssdev->name);
			return -ENOMEM;
		}

		BUG_ON(priv->num_encoders >= ARRAY_SIZE(priv->encoders));
		BUG_ON(priv->num_connectors >= ARRAY_SIZE(priv->connectors));

		priv->encoders[priv->num_encoders++] = encoder;
		priv->connectors[priv->num_connectors++] = connector;

		drm_mode_connector_attach_encoder(connector, encoder);

		/* figure out which crtc's we can connect the encoder to: */
		encoder->possible_crtcs = 0;
		for (id = 0; id < priv->num_crtcs; id++) {
			enum omap_dss_output_id supported_outputs =
					dss_feat_get_supported_outputs(pipe2chan(id));
			if (supported_outputs & dssdev->output->id)
				encoder->possible_crtcs |= (1 << id);
		}
	}

	dev->mode_config.min_width = 32;
	dev->mode_config.min_height = 32;

	/* note: eventually will need some cpu_is_omapXYZ() type stuff here
	 * to fill in these limits properly on different OMAP generations..
	 */
	dev->mode_config.max_width = 2048;
	dev->mode_config.max_height = 2048;

	dev->mode_config.funcs = &omap_mode_config_funcs;

	return 0;
}