51b751f112
Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Acked-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
125 lines
3 KiB
C
125 lines
3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2014 Marvell Technology Group Ltd.
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*
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* Antoine Tenart <antoine.tenart@free-electrons.com>
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*/
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#include <linux/clk.h>
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#include <linux/dma-mapping.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/phy/phy.h>
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#include <linux/platform_device.h>
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#include <linux/usb/chipidea.h>
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#include <linux/usb/hcd.h>
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#include <linux/usb/ulpi.h>
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#include "ci.h"
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struct ci_hdrc_usb2_priv {
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struct platform_device *ci_pdev;
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struct clk *clk;
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};
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static const struct ci_hdrc_platform_data ci_default_pdata = {
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.capoffset = DEF_CAPOFFSET,
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.flags = CI_HDRC_DISABLE_STREAMING,
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};
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static struct ci_hdrc_platform_data ci_zynq_pdata = {
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.capoffset = DEF_CAPOFFSET,
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};
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static const struct of_device_id ci_hdrc_usb2_of_match[] = {
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{ .compatible = "chipidea,usb2"},
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{ .compatible = "xlnx,zynq-usb-2.20a", .data = &ci_zynq_pdata},
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{ }
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};
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MODULE_DEVICE_TABLE(of, ci_hdrc_usb2_of_match);
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static int ci_hdrc_usb2_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct ci_hdrc_usb2_priv *priv;
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struct ci_hdrc_platform_data *ci_pdata = dev_get_platdata(dev);
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int ret;
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const struct of_device_id *match;
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if (!ci_pdata) {
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ci_pdata = devm_kmalloc(dev, sizeof(*ci_pdata), GFP_KERNEL);
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if (!ci_pdata)
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return -ENOMEM;
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*ci_pdata = ci_default_pdata; /* struct copy */
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}
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match = of_match_device(ci_hdrc_usb2_of_match, &pdev->dev);
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if (match && match->data) {
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/* struct copy */
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*ci_pdata = *(struct ci_hdrc_platform_data *)match->data;
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}
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->clk = devm_clk_get(dev, NULL);
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if (!IS_ERR(priv->clk)) {
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ret = clk_prepare_enable(priv->clk);
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if (ret) {
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dev_err(dev, "failed to enable the clock: %d\n", ret);
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return ret;
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}
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}
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ci_pdata->name = dev_name(dev);
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priv->ci_pdev = ci_hdrc_add_device(dev, pdev->resource,
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pdev->num_resources, ci_pdata);
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if (IS_ERR(priv->ci_pdev)) {
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ret = PTR_ERR(priv->ci_pdev);
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if (ret != -EPROBE_DEFER)
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dev_err(dev,
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"failed to register ci_hdrc platform device: %d\n",
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ret);
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goto clk_err;
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}
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platform_set_drvdata(pdev, priv);
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pm_runtime_no_callbacks(dev);
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pm_runtime_enable(dev);
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return 0;
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clk_err:
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if (!IS_ERR(priv->clk))
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clk_disable_unprepare(priv->clk);
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return ret;
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}
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static int ci_hdrc_usb2_remove(struct platform_device *pdev)
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{
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struct ci_hdrc_usb2_priv *priv = platform_get_drvdata(pdev);
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pm_runtime_disable(&pdev->dev);
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ci_hdrc_remove_device(priv->ci_pdev);
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clk_disable_unprepare(priv->clk);
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return 0;
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}
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static struct platform_driver ci_hdrc_usb2_driver = {
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.probe = ci_hdrc_usb2_probe,
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.remove = ci_hdrc_usb2_remove,
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.driver = {
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.name = "chipidea-usb2",
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.of_match_table = of_match_ptr(ci_hdrc_usb2_of_match),
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},
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};
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module_platform_driver(ci_hdrc_usb2_driver);
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MODULE_DESCRIPTION("ChipIdea HDRC USB2 binding for ci13xxx");
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MODULE_AUTHOR("Antoine Tenart <antoine.tenart@free-electrons.com>");
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MODULE_LICENSE("GPL");
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