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	.driver		= {
96		.name	= "tc-dwc-g210-pltfm",
97		.pm	= &tc_dwc_g210_pltfm_pm_ops,
98		.of_match_table	= of_match_ptr(tc_dwc_g210_pltfm_match),
99	},
100};
101
102module_platform_driver(tc_dwc_g210_pltfm_driver);
103
104MODULE_ALIAS("platform:tc-dwc-g210-pltfm");
105MODULE_DESCRIPTION("Synopsys Test Chip G210 platform glue driver");
106MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
107MODULE_LICENSE("Dual BSD/GPL");
108