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131 lines
3.2 KiB
131 lines
3.2 KiB
// 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 <[email protected]> |
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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 const 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 ci_hdrc_platform_data ci_zevio_pdata = { |
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.capoffset = DEF_CAPOFFSET, |
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.flags = CI_HDRC_REGS_SHARED | CI_HDRC_FORCE_FULLSPEED, |
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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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{ .compatible = "lsi,zevio-usb", .data = &ci_zevio_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_optional(dev, NULL); |
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if (IS_ERR(priv->clk)) |
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return PTR_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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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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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 <[email protected]>"); |
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MODULE_LICENSE("GPL");
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