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