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 */
tc_dwc_g210_pltfm_probe(struct platform_device * pdev)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 */
tc_dwc_g210_pltfm_remove(struct platform_device * pdev)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 .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
102 module_platform_driver(tc_dwc_g210_pltfm_driver);
103
104 MODULE_ALIAS("platform:tc-dwc-g210-pltfm");
105 MODULE_DESCRIPTION("Synopsys Test Chip G210 platform glue driver");
106 MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
107 MODULE_LICENSE("Dual BSD/GPL");
108