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 <ufs/ufshcd.h>
11 #include "ufshcd-dwc.h"
12 #include "tc-dwc-g210.h"
13
14 #include <linux/module.h>
15 #include <linux/pci.h>
16 #include <linux/pm_runtime.h>
17
18 /* Test Chip type expected values */
19 #define TC_G210_20BIT 20
20 #define TC_G210_40BIT 40
21 #define TC_G210_INV 0
22
23 static int tc_type = TC_G210_INV;
24 module_param(tc_type, int, 0);
25 MODULE_PARM_DESC(tc_type, "Test Chip Type (20 = 20-bit, 40 = 40-bit)");
26
27 /*
28 * struct ufs_hba_dwc_vops - UFS DWC specific variant operations
29 */
30 static struct ufs_hba_variant_ops tc_dwc_g210_pci_hba_vops = {
31 .name = "tc-dwc-g210-pci",
32 .link_startup_notify = ufshcd_dwc_link_startup_notify,
33 };
34
35 /**
36 * tc_dwc_g210_pci_remove - de-allocate PCI/SCSI host and host memory space
37 * data structure memory
38 * @pdev: pointer to PCI handle
39 */
tc_dwc_g210_pci_remove(struct pci_dev * pdev)40 static void tc_dwc_g210_pci_remove(struct pci_dev *pdev)
41 {
42 struct ufs_hba *hba = pci_get_drvdata(pdev);
43
44 pm_runtime_forbid(&pdev->dev);
45 pm_runtime_get_noresume(&pdev->dev);
46 ufshcd_remove(hba);
47 }
48
49 /**
50 * tc_dwc_g210_pci_probe - probe routine of the driver
51 * @pdev: pointer to PCI device handle
52 * @id: PCI device id
53 *
54 * Return: 0 on success, non-zero value on failure.
55 */
56 static int
tc_dwc_g210_pci_probe(struct pci_dev * pdev,const struct pci_device_id * id)57 tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
58 {
59 struct ufs_hba *hba;
60 void __iomem *mmio_base;
61 int err;
62
63 /* Check Test Chip type and set the specific setup routine */
64 if (tc_type == TC_G210_20BIT) {
65 tc_dwc_g210_pci_hba_vops.phy_initialization =
66 tc_dwc_g210_config_20_bit;
67 } else if (tc_type == TC_G210_40BIT) {
68 tc_dwc_g210_pci_hba_vops.phy_initialization =
69 tc_dwc_g210_config_40_bit;
70 } else {
71 dev_err(&pdev->dev, "test chip version not specified\n");
72 return -EPERM;
73 }
74
75 err = pcim_enable_device(pdev);
76 if (err) {
77 dev_err(&pdev->dev, "pcim_enable_device failed\n");
78 return err;
79 }
80
81 pci_set_master(pdev);
82
83 err = pcim_iomap_regions(pdev, 1 << 0, UFSHCD);
84 if (err < 0) {
85 dev_err(&pdev->dev, "request and iomap failed\n");
86 return err;
87 }
88
89 mmio_base = pcim_iomap_table(pdev)[0];
90
91 err = ufshcd_alloc_host(&pdev->dev, &hba);
92 if (err) {
93 dev_err(&pdev->dev, "Allocation failed\n");
94 return err;
95 }
96
97 hba->vops = &tc_dwc_g210_pci_hba_vops;
98
99 err = ufshcd_init(hba, mmio_base, pdev->irq);
100 if (err) {
101 dev_err(&pdev->dev, "Initialization failed\n");
102 return err;
103 }
104
105 pm_runtime_put_noidle(&pdev->dev);
106 pm_runtime_allow(&pdev->dev);
107
108 return 0;
109 }
110
111 static const struct dev_pm_ops tc_dwc_g210_pci_pm_ops = {
112 SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
113 SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
114 .prepare = ufshcd_suspend_prepare,
115 .complete = ufshcd_resume_complete,
116 };
117
118 static const struct pci_device_id tc_dwc_g210_pci_tbl[] = {
119 { PCI_VENDOR_ID_SYNOPSYS, 0xB101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
120 { PCI_VENDOR_ID_SYNOPSYS, 0xB102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
121 { } /* terminate list */
122 };
123
124 MODULE_DEVICE_TABLE(pci, tc_dwc_g210_pci_tbl);
125
126 static struct pci_driver tc_dwc_g210_pci_driver = {
127 .name = "tc-dwc-g210-pci",
128 .id_table = tc_dwc_g210_pci_tbl,
129 .probe = tc_dwc_g210_pci_probe,
130 .remove = tc_dwc_g210_pci_remove,
131 .driver = {
132 .pm = &tc_dwc_g210_pci_pm_ops
133 },
134 };
135
136 module_pci_driver(tc_dwc_g210_pci_driver);
137
138 MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
139 MODULE_DESCRIPTION("Synopsys Test Chip G210 PCI glue driver");
140 MODULE_LICENSE("Dual BSD/GPL");
141