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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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d95699be18
Currently, ci_default_pdata is common to all instances of the driver and gets modified by the core driver code. This is bad if there are multiple instances of the device with different settings such as the phy type. Fix this by making a copy of the default platform_data. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Peter Chen <Peter.Chen@freescale.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
118 lines
2.8 KiB
C
118 lines
2.8 KiB
C
/*
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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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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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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/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 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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if (!ci_pdata) {
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ci_pdata = devm_kmalloc(dev, sizeof(*ci_pdata), GFP_KERNEL);
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*ci_pdata = ci_default_pdata; /* struct copy */
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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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ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
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if (ret)
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goto clk_err;
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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 const struct of_device_id ci_hdrc_usb2_of_match[] = {
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{ .compatible = "chipidea,usb2" },
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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 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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