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/* Copyright (c) 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/module.h>
#include <linux/types.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/coresight.h>
struct coresight_platform_data *of_get_coresight_platform_data(
struct device *dev, struct device_node *node)
{
int i, ret = 0;
uint32_t outports_len = 0;
struct device_node *child_node;
struct coresight_platform_data *pdata;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return ERR_PTR(-ENOMEM);
ret = of_property_read_u32(node, "coresight-id", &pdata->id);
if (ret)
return ERR_PTR(ret);
ret = of_property_read_string(node, "coresight-name", &pdata->name);
if (ret)
return ERR_PTR(ret);
ret = of_property_read_u32(node, "coresight-nr-inports",
&pdata->nr_inports);
if (ret)
return ERR_PTR(ret);
pdata->nr_outports = 0;
if (of_get_property(node, "coresight-outports", &outports_len))
pdata->nr_outports = outports_len / sizeof(uint32_t);
if (pdata->nr_outports) {
pdata->outports = devm_kzalloc(dev, pdata->nr_outports *
sizeof(*pdata->outports),
GFP_KERNEL);
if (!pdata->outports)
return ERR_PTR(-ENOMEM);
ret = of_property_read_u32_array(node, "coresight-outports",
(u32 *)pdata->outports,
pdata->nr_outports);
if (ret)
return ERR_PTR(ret);
pdata->child_ids = devm_kzalloc(dev, pdata->nr_outports *
sizeof(*pdata->child_ids),
GFP_KERNEL);
if (!pdata->child_ids)
return ERR_PTR(-ENOMEM);
for (i = 0; i < pdata->nr_outports; i++) {
child_node = of_parse_phandle(node,
"coresight-child-list",
i);
if (!child_node)
return ERR_PTR(-EINVAL);
ret = of_property_read_u32(child_node, "coresight-id",
(u32 *)&pdata->child_ids[i]);
of_node_put(child_node);
if (ret)
return ERR_PTR(ret);
}
pdata->child_ports = devm_kzalloc(dev, pdata->nr_outports *
sizeof(*pdata->child_ports),
GFP_KERNEL);
if (!pdata->child_ports)
return ERR_PTR(-ENOMEM);
ret = of_property_read_u32_array(node, "coresight-child-ports",
(u32 *)pdata->child_ports,
pdata->nr_outports);
if (ret)
return ERR_PTR(ret);
}
pdata->default_sink = of_property_read_bool(node,
"coresight-default-sink");
return pdata;
}
EXPORT_SYMBOL_GPL(of_get_coresight_platform_data);
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