0dbfc39667
The omap_dss_device type and output_type fields differ mostly for historical reasons. The output_type field is required for all devices but the display at the end of the pipeline, and must be set to OMAP_DISPLAY_TYPE_NONE for the latter. The type field is required for all devices but the internal encoder, for which it is ignored. The only reason why the output_type field must be set to OMAP_DISPLAY_TYPE_NONE for the display at the end of the pipeline is to identify omap_dss_device instances corresponding to displays. This is not documented and confusing. Clean the code by adding a new display field to the omap_dss_device structure to identify displays, and merge the type and output_type fields. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
131 lines
3.5 KiB
C
131 lines
3.5 KiB
C
/*
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
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* Author: Archit Taneja <archit@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include "dss.h"
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#include "omapdss.h"
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int omapdss_device_init_output(struct omap_dss_device *out)
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{
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out->next = omapdss_of_find_connected_device(out->dev->of_node, 0);
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if (IS_ERR(out->next)) {
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if (PTR_ERR(out->next) != -EPROBE_DEFER)
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dev_err(out->dev, "failed to find video sink\n");
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return PTR_ERR(out->next);
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}
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if (out->next && out->type != out->next->type) {
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dev_err(out->dev, "output type and display type don't match\n");
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return -EINVAL;
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}
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return 0;
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}
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EXPORT_SYMBOL(omapdss_device_init_output);
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void omapdss_device_cleanup_output(struct omap_dss_device *out)
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{
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if (out->next)
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omapdss_device_put(out->next);
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}
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EXPORT_SYMBOL(omapdss_device_cleanup_output);
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int dss_install_mgr_ops(struct dss_device *dss,
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const struct dss_mgr_ops *mgr_ops,
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struct omap_drm_private *priv)
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{
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if (dss->mgr_ops)
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return -EBUSY;
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dss->mgr_ops = mgr_ops;
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dss->mgr_ops_priv = priv;
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return 0;
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}
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EXPORT_SYMBOL(dss_install_mgr_ops);
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void dss_uninstall_mgr_ops(struct dss_device *dss)
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{
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dss->mgr_ops = NULL;
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dss->mgr_ops_priv = NULL;
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}
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EXPORT_SYMBOL(dss_uninstall_mgr_ops);
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void dss_mgr_set_timings(struct omap_dss_device *dssdev,
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const struct videomode *vm)
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{
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dssdev->dss->mgr_ops->set_timings(dssdev->dss->mgr_ops_priv,
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dssdev->dispc_channel, vm);
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}
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EXPORT_SYMBOL(dss_mgr_set_timings);
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void dss_mgr_set_lcd_config(struct omap_dss_device *dssdev,
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const struct dss_lcd_mgr_config *config)
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{
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dssdev->dss->mgr_ops->set_lcd_config(dssdev->dss->mgr_ops_priv,
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dssdev->dispc_channel, config);
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}
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EXPORT_SYMBOL(dss_mgr_set_lcd_config);
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int dss_mgr_enable(struct omap_dss_device *dssdev)
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{
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return dssdev->dss->mgr_ops->enable(dssdev->dss->mgr_ops_priv,
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dssdev->dispc_channel);
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}
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EXPORT_SYMBOL(dss_mgr_enable);
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void dss_mgr_disable(struct omap_dss_device *dssdev)
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{
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dssdev->dss->mgr_ops->disable(dssdev->dss->mgr_ops_priv,
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dssdev->dispc_channel);
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}
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EXPORT_SYMBOL(dss_mgr_disable);
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void dss_mgr_start_update(struct omap_dss_device *dssdev)
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{
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dssdev->dss->mgr_ops->start_update(dssdev->dss->mgr_ops_priv,
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dssdev->dispc_channel);
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}
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EXPORT_SYMBOL(dss_mgr_start_update);
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int dss_mgr_register_framedone_handler(struct omap_dss_device *dssdev,
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void (*handler)(void *), void *data)
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{
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struct dss_device *dss = dssdev->dss;
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return dss->mgr_ops->register_framedone_handler(dss->mgr_ops_priv,
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dssdev->dispc_channel,
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handler, data);
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}
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EXPORT_SYMBOL(dss_mgr_register_framedone_handler);
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void dss_mgr_unregister_framedone_handler(struct omap_dss_device *dssdev,
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void (*handler)(void *), void *data)
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{
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struct dss_device *dss = dssdev->dss;
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dss->mgr_ops->unregister_framedone_handler(dss->mgr_ops_priv,
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dssdev->dispc_channel,
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handler, data);
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}
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EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);
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