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

   1/*
   2 * Synopsys G210 Test Chip driver
   3 *
   4 * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com)
   5 *
   6 * Authors: Joao Pinto <jpinto@synopsys.com>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License version 2 as
  10 * published by the Free Software Foundation.
  11 */
  12
  13#include <linux/kernel.h>
  14#include <linux/module.h>
  15#include <linux/platform_device.h>
  16#include <linux/of.h>
  17#include <linux/delay.h>
  18
  19#include "ufshcd-pltfrm.h"
  20#include "ufshcd-dwc.h"
  21#include "tc-dwc-g210.h"
  22
  23/*
  24 * UFS DWC specific variant operations
  25 */
  26static struct ufs_hba_variant_ops tc_dwc_g210_20bit_pltfm_hba_vops = {
  27        .name                   = "tc-dwc-g210-pltfm",
  28        .link_startup_notify    = ufshcd_dwc_link_startup_notify,
  29        .phy_initialization = tc_dwc_g210_config_20_bit,
  30};
  31
  32static struct ufs_hba_variant_ops tc_dwc_g210_40bit_pltfm_hba_vops = {
  33        .name                   = "tc-dwc-g210-pltfm",
  34        .link_startup_notify    = ufshcd_dwc_link_startup_notify,
  35        .phy_initialization = tc_dwc_g210_config_40_bit,
  36};
  37
  38static const struct of_device_id tc_dwc_g210_pltfm_match[] = {
  39        {
  40                .compatible = "snps,g210-tc-6.00-20bit",
  41                .data = &tc_dwc_g210_20bit_pltfm_hba_vops,
  42        },
  43        {
  44                .compatible = "snps,g210-tc-6.00-40bit",
  45                .data = &tc_dwc_g210_40bit_pltfm_hba_vops,
  46        },
  47        { },
  48};
  49MODULE_DEVICE_TABLE(of, tc_dwc_g210_pltfm_match);
  50
  51/**
  52 * tc_dwc_g210_pltfm_probe()
  53 * @pdev: pointer to platform device structure
  54 *
  55 */
  56static int tc_dwc_g210_pltfm_probe(struct platform_device *pdev)
  57{
  58        int err;
  59        const struct of_device_id *of_id;
  60        struct ufs_hba_variant_ops *vops;
  61        struct device *dev = &pdev->dev;
  62
  63        of_id = of_match_node(tc_dwc_g210_pltfm_match, dev->of_node);
  64        vops = (struct ufs_hba_variant_ops *)of_id->data;
  65
  66        /* Perform generic probe */
  67        err = ufshcd_pltfrm_init(pdev, vops);
  68        if (err)
  69                dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
  70
  71        return err;
  72}
  73
  74/**
  75 * tc_dwc_g210_pltfm_remove()
  76 * @pdev: pointer to platform device structure
  77 *
  78 */
  79static int tc_dwc_g210_pltfm_remove(struct platform_device *pdev)
  80{
  81        struct ufs_hba *hba =  platform_get_drvdata(pdev);
  82
  83        pm_runtime_get_sync(&(pdev)->dev);
  84        ufshcd_remove(hba);
  85
  86        return 0;
  87}
  88
  89static const struct dev_pm_ops tc_dwc_g210_pltfm_pm_ops = {
  90        .suspend        = ufshcd_pltfrm_suspend,
  91        .resume         = ufshcd_pltfrm_resume,
  92        .runtime_suspend = ufshcd_pltfrm_runtime_suspend,
  93        .runtime_resume  = ufshcd_pltfrm_runtime_resume,
  94        .runtime_idle    = ufshcd_pltfrm_runtime_idle,
  95};
  96
  97static struct platform_driver tc_dwc_g210_pltfm_driver = {
  98        .probe          = tc_dwc_g210_pltfm_probe,
  99        .remove         = tc_dwc_g210_pltfm_remove,
 100        .shutdown = ufshcd_pltfrm_shutdown,
 101        .driver         = {
 102                .name   = "tc-dwc-g210-pltfm",
 103                .pm     = &tc_dwc_g210_pltfm_pm_ops,
 104                .of_match_table = of_match_ptr(tc_dwc_g210_pltfm_match),
 105        },
 106};
 107
 108module_platform_driver(tc_dwc_g210_pltfm_driver);
 109
 110MODULE_ALIAS("platform:tc-dwc-g210-pltfm");
 111MODULE_DESCRIPTION("Synopsys Test Chip G210 platform glue driver");
 112MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
 113MODULE_LICENSE("Dual BSD/GPL");
 114