LXR linux/drivers/scsi/ufs/tc-dwc-g210-pltfrm.c

   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
  16#include "ufshcd-pltfrm.h"
  17#include "ufshcd-dwc.h"
  18#include "tc-dwc-g210.h"
  19
  20/*
  21 * UFS DWC specific variant operations
  22 */
  23static struct ufs_hba_variant_ops tc_dwc_g210_20bit_pltfm_hba_vops = {
  24        .name                   = "tc-dwc-g210-pltfm",
  25        .link_startup_notify    = ufshcd_dwc_link_startup_notify,
  26        .phy_initialization = tc_dwc_g210_config_20_bit,
  27};
  28
  29static struct ufs_hba_variant_ops tc_dwc_g210_40bit_pltfm_hba_vops = {
  30        .name                   = "tc-dwc-g210-pltfm",
  31        .link_startup_notify    = ufshcd_dwc_link_startup_notify,
  32        .phy_initialization = tc_dwc_g210_config_40_bit,
  33};
  34
  35static const struct of_device_id tc_dwc_g210_pltfm_match[] = {
  36        {
  37                .compatible = "snps,g210-tc-6.00-20bit",
  38                .data = &tc_dwc_g210_20bit_pltfm_hba_vops,
  39        },
  40        {
  41                .compatible = "snps,g210-tc-6.00-40bit",
  42                .data = &tc_dwc_g210_40bit_pltfm_hba_vops,
  43        },
  44        { },
  45};
  46MODULE_DEVICE_TABLE(of, tc_dwc_g210_pltfm_match);
  47
  48/**
  49 * tc_dwc_g210_pltfm_probe()
  50 * @pdev: pointer to platform device structure
  51 *
  52 */
  53static int tc_dwc_g210_pltfm_probe(struct platform_device *pdev)
  54{
  55        int err;
  56        const struct of_device_id *of_id;
  57        struct ufs_hba_variant_ops *vops;
  58        struct device *dev = &pdev->dev;
  59
  60        of_id = of_match_node(tc_dwc_g210_pltfm_match, dev->of_node);
  61        vops = (struct ufs_hba_variant_ops *)of_id->data;
  62
  63        /* Perform generic probe */
  64        err = ufshcd_pltfrm_init(pdev, vops);
  65        if (err)
  66                dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
  67
  68        return err;
  69}
  70
  71/**
  72 * tc_dwc_g210_pltfm_remove()
  73 * @pdev: pointer to platform device structure
  74 *
  75 */
  76static int tc_dwc_g210_pltfm_remove(struct platform_device *pdev)
  77{
  78        struct ufs_hba *hba =  platform_get_drvdata(pdev);
  79
  80        pm_runtime_get_sync(&(pdev)->dev);
  81        ufshcd_remove(hba);
  82
  83        return 0;
  84}
  85
  86static const struct dev_pm_ops tc_dwc_g210_pltfm_pm_ops = {
  87        .suspend        = ufshcd_pltfrm_suspend,
  88        .resume         = ufshcd_pltfrm_resume,
  89        .runtime_suspend = ufshcd_pltfrm_runtime_suspend,
  90        .runtime_resume  = ufshcd_pltfrm_runtime_resume,
  91        .runtime_idle    = ufshcd_pltfrm_runtime_idle,
  92};
  93
  94static struct platform_driver tc_dwc_g210_pltfm_driver = {
  95        .probe          = tc_dwc_g210_pltfm_probe,
  96        .remove         = tc_dwc_g210_pltfm_remove,
  97        .shutdown = ufshcd_pltfrm_shutdown,
  98        .driver         = {
  99                .name   = "tc-dwc-g210-pltfm",
 100                .pm     = &tc_dwc_g210_pltfm_pm_ops,
 101                .of_match_table = of_match_ptr(tc_dwc_g210_pltfm_match),
 102        },
 103};
 104
 105module_platform_driver(tc_dwc_g210_pltfm_driver);
 106
 107MODULE_ALIAS("platform:tc-dwc-g210-pltfm");
 108MODULE_DESCRIPTION("Synopsys Test Chip G210 platform glue driver");
 109MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
 110MODULE_LICENSE("Dual BSD/GPL");
 111