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#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 void tc_dwc_g210_pltfm_remove(struct platform_device *pdev)
 78{
 79	ufshcd_pltfrm_remove(pdev);
 80}
 81
 82static const struct dev_pm_ops tc_dwc_g210_pltfm_pm_ops = {
 83	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
 84	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
 85};
 86
 87static struct platform_driver tc_dwc_g210_pltfm_driver = {
 88	.probe		= tc_dwc_g210_pltfm_probe,
 89	.remove		= tc_dwc_g210_pltfm_remove,
 90	.driver		= {
 91		.name	= "tc-dwc-g210-pltfm",
 92		.pm	= &tc_dwc_g210_pltfm_pm_ops,
 93		.of_match_table	= of_match_ptr(tc_dwc_g210_pltfm_match),
 94	},
 95};
 96
 97module_platform_driver(tc_dwc_g210_pltfm_driver);
 98
 99MODULE_ALIAS("platform:tc-dwc-g210-pltfm");
100MODULE_DESCRIPTION("Synopsys Test Chip G210 platform glue driver");
101MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
102MODULE_LICENSE("Dual BSD/GPL");