forked from Minki/linux
410d841a59
According to the classification, the type of replicator is link, so the subtype should also be link_subtype. Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
138 lines
3.6 KiB
C
138 lines
3.6 KiB
C
/* Copyright (c) 2011-2012, 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/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/device.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/io.h>
|
|
#include <linux/err.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/of.h>
|
|
#include <linux/coresight.h>
|
|
|
|
#include "coresight-priv.h"
|
|
|
|
/**
|
|
* struct replicator_drvdata - specifics associated to a replicator component
|
|
* @dev: the device entity associated with this component
|
|
* @csdev: component vitals needed by the framework
|
|
*/
|
|
struct replicator_drvdata {
|
|
struct device *dev;
|
|
struct coresight_device *csdev;
|
|
};
|
|
|
|
static int replicator_enable(struct coresight_device *csdev, int inport,
|
|
int outport)
|
|
{
|
|
struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
|
|
|
|
dev_info(drvdata->dev, "REPLICATOR enabled\n");
|
|
return 0;
|
|
}
|
|
|
|
static void replicator_disable(struct coresight_device *csdev, int inport,
|
|
int outport)
|
|
{
|
|
struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
|
|
|
|
dev_info(drvdata->dev, "REPLICATOR disabled\n");
|
|
}
|
|
|
|
static const struct coresight_ops_link replicator_link_ops = {
|
|
.enable = replicator_enable,
|
|
.disable = replicator_disable,
|
|
};
|
|
|
|
static const struct coresight_ops replicator_cs_ops = {
|
|
.link_ops = &replicator_link_ops,
|
|
};
|
|
|
|
static int replicator_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct coresight_platform_data *pdata = NULL;
|
|
struct replicator_drvdata *drvdata;
|
|
struct coresight_desc *desc;
|
|
struct device_node *np = pdev->dev.of_node;
|
|
|
|
if (np) {
|
|
pdata = of_get_coresight_platform_data(dev, np);
|
|
if (IS_ERR(pdata))
|
|
return PTR_ERR(pdata);
|
|
pdev->dev.platform_data = pdata;
|
|
}
|
|
|
|
drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
|
|
if (!drvdata)
|
|
return -ENOMEM;
|
|
|
|
drvdata->dev = &pdev->dev;
|
|
platform_set_drvdata(pdev, drvdata);
|
|
|
|
desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
|
|
if (!desc)
|
|
return -ENOMEM;
|
|
|
|
desc->type = CORESIGHT_DEV_TYPE_LINK;
|
|
desc->subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
|
|
desc->ops = &replicator_cs_ops;
|
|
desc->pdata = pdev->dev.platform_data;
|
|
desc->dev = &pdev->dev;
|
|
drvdata->csdev = coresight_register(desc);
|
|
if (IS_ERR(drvdata->csdev))
|
|
return PTR_ERR(drvdata->csdev);
|
|
|
|
dev_info(dev, "REPLICATOR initialized\n");
|
|
return 0;
|
|
}
|
|
|
|
static int replicator_remove(struct platform_device *pdev)
|
|
{
|
|
struct replicator_drvdata *drvdata = platform_get_drvdata(pdev);
|
|
|
|
coresight_unregister(drvdata->csdev);
|
|
return 0;
|
|
}
|
|
|
|
static struct of_device_id replicator_match[] = {
|
|
{.compatible = "arm,coresight-replicator"},
|
|
{}
|
|
};
|
|
|
|
static struct platform_driver replicator_driver = {
|
|
.probe = replicator_probe,
|
|
.remove = replicator_remove,
|
|
.driver = {
|
|
.name = "coresight-replicator",
|
|
.of_match_table = replicator_match,
|
|
},
|
|
};
|
|
|
|
static int __init replicator_init(void)
|
|
{
|
|
return platform_driver_register(&replicator_driver);
|
|
}
|
|
module_init(replicator_init);
|
|
|
|
static void __exit replicator_exit(void)
|
|
{
|
|
platform_driver_unregister(&replicator_driver);
|
|
}
|
|
module_exit(replicator_exit);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("CoreSight Replicator driver");
|