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  */
24 static 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 
30 static 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 
36 static 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 };
47 MODULE_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  */
54 static 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  */
77 static 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 
87 static 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 
92 static struct platform_driver tc_dwc_g210_pltfm_driver = {
93 	.probe		= tc_dwc_g210_pltfm_probe,
94 	.remove		= tc_dwc_g210_pltfm_remove,
95 	.shutdown = ufshcd_pltfrm_shutdown,
96 	.driver		= {
97 		.name	= "tc-dwc-g210-pltfm",
98 		.pm	= &tc_dwc_g210_pltfm_pm_ops,
99 		.of_match_table	= of_match_ptr(tc_dwc_g210_pltfm_match),
100 	},
101 };
102 
103 module_platform_driver(tc_dwc_g210_pltfm_driver);
104 
105 MODULE_ALIAS("platform:tc-dwc-g210-pltfm");
106 MODULE_DESCRIPTION("Synopsys Test Chip G210 platform glue driver");
107 MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
108 MODULE_LICENSE("Dual BSD/GPL");
109