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/*
* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/of_irq.h>
#include "edp.h"
static irqreturn_t edp_irq(int irq, void *dev_id)
{
struct msm_edp *edp = dev_id;
/* Process eDP irq */
return msm_edp_ctrl_irq(edp->ctrl);
}
static void edp_destroy(struct platform_device *pdev)
{
struct msm_edp *edp = platform_get_drvdata(pdev);
if (!edp)
return;
if (edp->ctrl) {
msm_edp_ctrl_destroy(edp->ctrl);
edp->ctrl = NULL;
}
platform_set_drvdata(pdev, NULL);
}
/* construct eDP at bind/probe time, grab all the resources. */
static struct msm_edp *edp_init(struct platform_device *pdev)
{
struct msm_edp *edp = NULL;
int ret;
if (!pdev) {
pr_err("no eDP device\n");
ret = -ENXIO;
goto fail;
}
edp = devm_kzalloc(&pdev->dev, sizeof(*edp), GFP_KERNEL);
if (!edp) {
ret = -ENOMEM;
goto fail;
}
DBG("eDP probed=%p", edp);
edp->pdev = pdev;
platform_set_drvdata(pdev, edp);
ret = msm_edp_ctrl_init(edp);
if (ret)
goto fail;
return edp;
fail:
if (edp)
edp_destroy(pdev);
return ERR_PTR(ret);
}
static int edp_bind(struct device *dev, struct device *master, void *data)
{
struct drm_device *drm = dev_get_drvdata(master);
struct msm_drm_private *priv = drm->dev_private;
struct msm_edp *edp;
DBG("");
edp = edp_init(to_platform_device(dev));
if (IS_ERR(edp))
return PTR_ERR(edp);
priv->edp = edp;
return 0;
}
static void edp_unbind(struct device *dev, struct device *master, void *data)
{
struct drm_device *drm = dev_get_drvdata(master);
struct msm_drm_private *priv = drm->dev_private;
DBG("");
if (priv->edp) {
edp_destroy(to_platform_device(dev));
priv->edp = NULL;
}
}
static const struct component_ops edp_ops = {
.bind = edp_bind,
.unbind = edp_unbind,
};
static int edp_dev_probe(struct platform_device *pdev)
{
DBG("");
return component_add(&pdev->dev, &edp_ops);
}
static int edp_dev_remove(struct platform_device *pdev)
{
DBG("");
component_del(&pdev->dev, &edp_ops);
return 0;
}
static const struct of_device_id dt_match[] = {
{ .compatible = "qcom,mdss-edp" },
{}
};
static struct platform_driver edp_driver = {
.probe = edp_dev_probe,
.remove = edp_dev_remove,
.driver = {
.name = "msm_edp",
.of_match_table = dt_match,
},
};
void __init msm_edp_register(void)
{
DBG("");
platform_driver_register(&edp_driver);
}
void __exit msm_edp_unregister(void)
{
DBG("");
platform_driver_unregister(&edp_driver);
}
/* Second part of initialization, the drm/kms level modeset_init */
int msm_edp_modeset_init(struct msm_edp *edp, struct drm_device *dev,
struct drm_encoder *encoder)
{
struct platform_device *pdev = edp->pdev;
struct msm_drm_private *priv = dev->dev_private;
int ret;
edp->encoder = encoder;
edp->dev = dev;
edp->bridge = msm_edp_bridge_init(edp);
if (IS_ERR(edp->bridge)) {
ret = PTR_ERR(edp->bridge);
dev_err(dev->dev, "failed to create eDP bridge: %d\n", ret);
edp->bridge = NULL;
goto fail;
}
edp->connector = msm_edp_connector_init(edp);
if (IS_ERR(edp->connector)) {
ret = PTR_ERR(edp->connector);
dev_err(dev->dev, "failed to create eDP connector: %d\n", ret);
edp->connector = NULL;
goto fail;
}
edp->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
if (edp->irq < 0) {
ret = edp->irq;
dev_err(dev->dev, "failed to get IRQ: %d\n", ret);
goto fail;
}
ret = devm_request_irq(&pdev->dev, edp->irq,
edp_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
"edp_isr", edp);
if (ret < 0) {
dev_err(dev->dev, "failed to request IRQ%u: %d\n",
edp->irq, ret);
goto fail;
}
encoder->bridge = edp->bridge;
priv->bridges[priv->num_bridges++] = edp->bridge;
priv->connectors[priv->num_connectors++] = edp->connector;
return 0;
fail:
/* bridge/connector are normally destroyed by drm */
if (edp->bridge) {
edp_bridge_destroy(edp->bridge);
edp->bridge = NULL;
}
if (edp->connector) {
edp->connector->funcs->destroy(edp->connector);
edp->connector = NULL;
}
return ret;
}
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