cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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tc-dwc-g210-pltfrm.c (2845B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Synopsys G210 Test Chip driver
      4 *
      5 * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com)
      6 *
      7 * Authors: Joao Pinto <jpinto@synopsys.com>
      8 */
      9
     10#include <linux/kernel.h>
     11#include <linux/module.h>
     12#include <linux/platform_device.h>
     13#include <linux/of.h>
     14#include <linux/delay.h>
     15#include <linux/pm_runtime.h>
     16
     17#include "ufshcd-pltfrm.h"
     18#include "ufshcd-dwc.h"
     19#include "tc-dwc-g210.h"
     20
     21/*
     22 * UFS DWC specific variant operations
     23 */
     24static struct ufs_hba_variant_ops tc_dwc_g210_20bit_pltfm_hba_vops = {
     25	.name                   = "tc-dwc-g210-pltfm",
     26	.link_startup_notify	= ufshcd_dwc_link_startup_notify,
     27	.phy_initialization = tc_dwc_g210_config_20_bit,
     28};
     29
     30static struct ufs_hba_variant_ops tc_dwc_g210_40bit_pltfm_hba_vops = {
     31	.name                   = "tc-dwc-g210-pltfm",
     32	.link_startup_notify	= ufshcd_dwc_link_startup_notify,
     33	.phy_initialization = tc_dwc_g210_config_40_bit,
     34};
     35
     36static const struct of_device_id tc_dwc_g210_pltfm_match[] = {
     37	{
     38		.compatible = "snps,g210-tc-6.00-20bit",
     39		.data = &tc_dwc_g210_20bit_pltfm_hba_vops,
     40	},
     41	{
     42		.compatible = "snps,g210-tc-6.00-40bit",
     43		.data = &tc_dwc_g210_40bit_pltfm_hba_vops,
     44	},
     45	{ },
     46};
     47MODULE_DEVICE_TABLE(of, tc_dwc_g210_pltfm_match);
     48
     49/**
     50 * tc_dwc_g210_pltfm_probe()
     51 * @pdev: pointer to platform device structure
     52 *
     53 */
     54static int tc_dwc_g210_pltfm_probe(struct platform_device *pdev)
     55{
     56	int err;
     57	const struct of_device_id *of_id;
     58	struct ufs_hba_variant_ops *vops;
     59	struct device *dev = &pdev->dev;
     60
     61	of_id = of_match_node(tc_dwc_g210_pltfm_match, dev->of_node);
     62	vops = (struct ufs_hba_variant_ops *)of_id->data;
     63
     64	/* Perform generic probe */
     65	err = ufshcd_pltfrm_init(pdev, vops);
     66	if (err)
     67		dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
     68
     69	return err;
     70}
     71
     72/**
     73 * tc_dwc_g210_pltfm_remove()
     74 * @pdev: pointer to platform device structure
     75 *
     76 */
     77static int tc_dwc_g210_pltfm_remove(struct platform_device *pdev)
     78{
     79	struct ufs_hba *hba =  platform_get_drvdata(pdev);
     80
     81	pm_runtime_get_sync(&(pdev)->dev);
     82	ufshcd_remove(hba);
     83
     84	return 0;
     85}
     86
     87static const struct dev_pm_ops tc_dwc_g210_pltfm_pm_ops = {
     88	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
     89	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
     90};
     91
     92static struct platform_driver tc_dwc_g210_pltfm_driver = {
     93	.probe		= tc_dwc_g210_pltfm_probe,
     94	.remove		= tc_dwc_g210_pltfm_remove,
     95	.shutdown = ufshcd_pltfrm_shutdown,
     96	.driver		= {
     97		.name	= "tc-dwc-g210-pltfm",
     98		.pm	= &tc_dwc_g210_pltfm_pm_ops,
     99		.of_match_table	= of_match_ptr(tc_dwc_g210_pltfm_match),
    100	},
    101};
    102
    103module_platform_driver(tc_dwc_g210_pltfm_driver);
    104
    105MODULE_ALIAS("platform:tc-dwc-g210-pltfm");
    106MODULE_DESCRIPTION("Synopsys Test Chip G210 platform glue driver");
    107MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
    108MODULE_LICENSE("Dual BSD/GPL");