Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2016, NVIDIA Corporation
 */
 
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/reset.h>
 
#include <linux/usb/chipidea.h>
 
#include "ci.h"
 
struct tegra_udc {
<------>struct ci_hdrc_platform_data data;
<------>struct platform_device *dev;
 
<------>struct usb_phy *phy;
<------>struct clk *clk;
};
 
struct tegra_udc_soc_info {
<------>unsigned long flags;
};
 
static const struct tegra_udc_soc_info tegra_udc_soc_info = {
<------>.flags = CI_HDRC_REQUIRES_ALIGNED_DMA,
};
 
static const struct of_device_id tegra_udc_of_match[] = {
<------>{
<------><------>.compatible = "nvidia,tegra20-udc",
<------><------>.data = &tegra_udc_soc_info,
<------>}, {
<------><------>.compatible = "nvidia,tegra30-udc",
<------><------>.data = &tegra_udc_soc_info,
<------>}, {
<------><------>.compatible = "nvidia,tegra114-udc",
<------><------>.data = &tegra_udc_soc_info,
<------>}, {
<------><------>.compatible = "nvidia,tegra124-udc",
<------><------>.data = &tegra_udc_soc_info,
<------>}, {
<------><------>/* sentinel */
<------>}
};
MODULE_DEVICE_TABLE(of, tegra_udc_of_match);
 
static int tegra_udc_probe(struct platform_device *pdev)
{
<------>const struct tegra_udc_soc_info *soc;
<------>struct tegra_udc *udc;
<------>int err;
 
<------>udc = devm_kzalloc(&pdev->dev, sizeof(*udc), GFP_KERNEL);
<------>if (!udc)
<------><------>return -ENOMEM;
 
<------>soc = of_device_get_match_data(&pdev->dev);
<------>if (!soc) {
<------><------>dev_err(&pdev->dev, "failed to match OF data\n");
<------><------>return -EINVAL;
<------>}
 
<------>udc->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "nvidia,phy", 0);
<------>if (IS_ERR(udc->phy)) {
<------><------>err = PTR_ERR(udc->phy);
<------><------>dev_err(&pdev->dev, "failed to get PHY: %d\n", err);
<------><------>return err;
<------>}
 
<------>udc->clk = devm_clk_get(&pdev->dev, NULL);
<------>if (IS_ERR(udc->clk)) {
<------><------>err = PTR_ERR(udc->clk);
<------><------>dev_err(&pdev->dev, "failed to get clock: %d\n", err);
<------><------>return err;
<------>}
 
<------>err = clk_prepare_enable(udc->clk);
<------>if (err < 0) {
<------><------>dev_err(&pdev->dev, "failed to enable clock: %d\n", err);
<------><------>return err;
<------>}
 
<------>/* setup and register ChipIdea HDRC device */
<------>udc->data.name = "tegra-udc";
<------>udc->data.flags = soc->flags;
<------>udc->data.usb_phy = udc->phy;
<------>udc->data.capoffset = DEF_CAPOFFSET;
 
<------>udc->dev = ci_hdrc_add_device(&pdev->dev, pdev->resource,
<------><------><------><------>      pdev->num_resources, &udc->data);
<------>if (IS_ERR(udc->dev)) {
<------><------>err = PTR_ERR(udc->dev);
<------><------>dev_err(&pdev->dev, "failed to add HDRC device: %d\n", err);
<------><------>goto fail_power_off;
<------>}
 
<------>platform_set_drvdata(pdev, udc);
 
<------>return 0;
 
fail_power_off:
<------>clk_disable_unprepare(udc->clk);
<------>return err;
}
 
static int tegra_udc_remove(struct platform_device *pdev)
{
<------>struct tegra_udc *udc = platform_get_drvdata(pdev);
 
<------>ci_hdrc_remove_device(udc->dev);
<------>clk_disable_unprepare(udc->clk);
 
<------>return 0;
}
 
static struct platform_driver tegra_udc_driver = {
<------>.driver = {
<------><------>.name = "tegra-udc",
<------><------>.of_match_table = tegra_udc_of_match,
<------>},
<------>.probe = tegra_udc_probe,
<------>.remove = tegra_udc_remove,
};
module_platform_driver(tegra_udc_driver);
 
MODULE_DESCRIPTION("NVIDIA Tegra USB device mode driver");
MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
MODULE_ALIAS("platform:tegra-udc");
MODULE_LICENSE("GPL v2");