143 lines
3.8 KiB
C
143 lines
3.8 KiB
C
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/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include <linux/coresight.h>
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#include <linux/coresight-cti.h>
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struct coresight_platform_data *of_get_coresight_platform_data(
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struct device *dev, struct device_node *node)
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{
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int i, ret = 0;
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uint32_t outports_len = 0;
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struct device_node *child_node;
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struct coresight_platform_data *pdata;
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pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
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if (!pdata)
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return ERR_PTR(-ENOMEM);
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ret = of_property_read_u32(node, "coresight-id", &pdata->id);
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if (ret)
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return ERR_PTR(ret);
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ret = of_property_read_string(node, "coresight-name", &pdata->name);
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if (ret)
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return ERR_PTR(ret);
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ret = of_property_read_u32(node, "coresight-nr-inports",
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&pdata->nr_inports);
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if (ret)
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return ERR_PTR(ret);
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pdata->nr_outports = 0;
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if (of_get_property(node, "coresight-outports", &outports_len))
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pdata->nr_outports = outports_len/sizeof(uint32_t);
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if (pdata->nr_outports) {
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pdata->outports = devm_kzalloc(dev, pdata->nr_outports *
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sizeof(*pdata->outports),
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GFP_KERNEL);
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if (!pdata->outports)
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return ERR_PTR(-ENOMEM);
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ret = of_property_read_u32_array(node, "coresight-outports",
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(u32 *)pdata->outports,
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pdata->nr_outports);
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if (ret)
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return ERR_PTR(ret);
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pdata->child_ids = devm_kzalloc(dev, pdata->nr_outports *
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sizeof(*pdata->child_ids),
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GFP_KERNEL);
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if (!pdata->child_ids)
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return ERR_PTR(-ENOMEM);
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for (i = 0; i < pdata->nr_outports; i++) {
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child_node = of_parse_phandle(node,
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"coresight-child-list",
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i);
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if (!child_node)
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return ERR_PTR(-EINVAL);
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ret = of_property_read_u32(child_node, "coresight-id",
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(u32 *)&pdata->child_ids[i]);
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of_node_put(child_node);
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if (ret)
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return ERR_PTR(ret);
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}
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pdata->child_ports = devm_kzalloc(dev, pdata->nr_outports *
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sizeof(*pdata->child_ports),
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GFP_KERNEL);
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if (!pdata->child_ports)
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return ERR_PTR(-ENOMEM);
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ret = of_property_read_u32_array(node, "coresight-child-ports",
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(u32 *)pdata->child_ports,
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pdata->nr_outports);
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if (ret)
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return ERR_PTR(ret);
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}
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pdata->default_sink = of_property_read_bool(node,
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"coresight-default-sink");
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return pdata;
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}
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EXPORT_SYMBOL(of_get_coresight_platform_data);
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struct coresight_cti_data *of_get_coresight_cti_data(
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struct device *dev, struct device_node *node)
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{
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int i, ret;
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uint32_t ctis_len;
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struct device_node *child_node;
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struct coresight_cti_data *ctidata;
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ctidata = devm_kzalloc(dev, sizeof(*ctidata), GFP_KERNEL);
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if (!ctidata)
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return ERR_PTR(-ENOMEM);
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if (of_get_property(node, "coresight-ctis", &ctis_len))
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ctidata->nr_ctis = ctis_len/sizeof(uint32_t);
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else
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return ERR_PTR(-EINVAL);
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if (ctidata->nr_ctis) {
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ctidata->names = devm_kzalloc(dev, ctidata->nr_ctis *
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sizeof(*ctidata->names),
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GFP_KERNEL);
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if (!ctidata->names)
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return ERR_PTR(-ENOMEM);
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for (i = 0; i < ctidata->nr_ctis; i++) {
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child_node = of_parse_phandle(node, "coresight-ctis",
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i);
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if (!child_node)
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return ERR_PTR(-EINVAL);
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ret = of_property_read_string(child_node,
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"coresight-name",
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&ctidata->names[i]);
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of_node_put(child_node);
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if (ret)
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return ERR_PTR(ret);
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}
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}
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return ctidata;
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}
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EXPORT_SYMBOL(of_get_coresight_cti_data);
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