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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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79ddb2f0c3
When a DSS output is (dis)connected the omapdss_output_(un)set_device() function performs a sanity check to ensure that the output isn't already (dis)connected. The check is unnecessary as those situations should never happen, but can nonetheless be useful to catch driver bugs. To prepare for removal of the omapdss_output_(un)set_device() functions move the connection check to the omapdss_device_connect() function. The omapdss_device_disconnect() already contains a corresponding check. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
159 lines
4.0 KiB
C
159 lines
4.0 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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static DEFINE_MUTEX(output_lock);
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int omapdss_output_set_device(struct omap_dss_device *out,
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struct omap_dss_device *dssdev)
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{
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int r = 0;
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mutex_lock(&output_lock);
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if (out->output_type != dssdev->type) {
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dev_err(out->dev, "output type and display type don't match\n");
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r = -EINVAL;
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}
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mutex_unlock(&output_lock);
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return r;
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}
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EXPORT_SYMBOL(omapdss_output_set_device);
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int omapdss_output_unset_device(struct omap_dss_device *out)
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{
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int r = 0;
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mutex_lock(&output_lock);
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if (out->dst->state != OMAP_DSS_DISPLAY_DISABLED) {
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dev_err(out->dev,
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"device %s is not disabled, cannot unset device\n",
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out->dst->name);
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r = -EINVAL;
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}
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mutex_unlock(&output_lock);
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return r;
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}
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EXPORT_SYMBOL(omapdss_output_unset_device);
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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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int dss_mgr_connect(struct omap_dss_device *dssdev)
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{
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return dssdev->dss->mgr_ops->connect(dssdev->dss->mgr_ops_priv,
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dssdev->dispc_channel, dssdev);
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}
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EXPORT_SYMBOL(dss_mgr_connect);
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void dss_mgr_disconnect(struct omap_dss_device *dssdev)
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{
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dssdev->dss->mgr_ops->disconnect(dssdev->dss->mgr_ops_priv,
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dssdev->dispc_channel, dssdev);
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}
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EXPORT_SYMBOL(dss_mgr_disconnect);
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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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