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
23static int tc_type = TC_G210_INV;
24module_param(tc_type, int, 0);
25MODULE_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 */
30static 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 */
40static 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 */
56static int
57tc_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
111static 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
118static 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
124MODULE_DEVICE_TABLE(pci, tc_dwc_g210_pci_tbl);
125
126static 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
136module_pci_driver(tc_dwc_g210_pci_driver);
137
138MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
139MODULE_DESCRIPTION("Synopsys Test Chip G210 PCI glue driver");
140MODULE_LICENSE("Dual BSD/GPL");
141