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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Synopsys DesignWare Multimedia Card PCI Interface driver
4 *
5 * Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
6 */
7
8#include <linux/interrupt.h>
9#include <linux/module.h>
10#include <linux/io.h>
11#include <linux/irq.h>
12#include <linux/pci.h>
13#include <linux/pm_runtime.h>
14#include <linux/slab.h>
15#include <linux/mmc/host.h>
16#include <linux/mmc/mmc.h>
17#include "dw_mmc.h"
18
19#define PCI_BAR_NO 2
20#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
21#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
22/* Defining the Capabilities */
23#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
24 MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
25 MMC_CAP_SDIO_IRQ)
26
27static struct dw_mci_board pci_board_data = {
28 .caps = DW_MCI_CAPABILITIES,
29 .bus_hz = 33 * 1000 * 1000,
30 .detect_delay_ms = 200,
31 .fifo_depth = 32,
32};
33
34static int dw_mci_pci_probe(struct pci_dev *pdev,
35 const struct pci_device_id *entries)
36{
37 struct dw_mci *host;
38 int ret;
39
40 ret = pcim_enable_device(pdev);
41 if (ret)
42 return ret;
43
44 host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
45 if (!host)
46 return -ENOMEM;
47
48 host->irq = pdev->irq;
49 host->irq_flags = IRQF_SHARED;
50 host->dev = &pdev->dev;
51 host->pdata = &pci_board_data;
52
53 ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev));
54 if (ret)
55 return ret;
56
57 host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO];
58
59 pci_set_master(pdev);
60
61 ret = dw_mci_probe(host);
62 if (ret)
63 return ret;
64
65 pci_set_drvdata(pdev, host);
66
67 return 0;
68}
69
70static void dw_mci_pci_remove(struct pci_dev *pdev)
71{
72 struct dw_mci *host = pci_get_drvdata(pdev);
73
74 dw_mci_remove(host);
75}
76
77static const struct dev_pm_ops dw_mci_pci_dev_pm_ops = {
78 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
79 pm_runtime_force_resume)
80 SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
81 dw_mci_runtime_resume,
82 NULL)
83};
84
85static const struct pci_device_id dw_mci_pci_id[] = {
86 { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
87 {}
88};
89MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
90
91static struct pci_driver dw_mci_pci_driver = {
92 .name = "dw_mmc_pci",
93 .id_table = dw_mci_pci_id,
94 .probe = dw_mci_pci_probe,
95 .remove = dw_mci_pci_remove,
96 .driver = {
97 .pm = &dw_mci_pci_dev_pm_ops,
98 },
99};
100
101module_pci_driver(dw_mci_pci_driver);
102
103MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
104MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
105MODULE_LICENSE("GPL v2");
1/*
2 * Synopsys DesignWare Multimedia Card PCI Interface driver
3 *
4 * Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12#include <linux/interrupt.h>
13#include <linux/module.h>
14#include <linux/io.h>
15#include <linux/irq.h>
16#include <linux/pci.h>
17#include <linux/slab.h>
18#include <linux/mmc/host.h>
19#include <linux/mmc/mmc.h>
20#include <linux/mmc/dw_mmc.h>
21#include "dw_mmc.h"
22
23#define PCI_BAR_NO 2
24#define COMPLETE_BAR 0
25#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
26#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
27/* Defining the Capabilities */
28#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
29 MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
30 MMC_CAP_SDIO_IRQ)
31
32static struct dw_mci_board pci_board_data = {
33 .num_slots = 1,
34 .caps = DW_MCI_CAPABILITIES,
35 .bus_hz = 33 * 1000 * 1000,
36 .detect_delay_ms = 200,
37 .fifo_depth = 32,
38};
39
40static int __devinit dw_mci_pci_probe(struct pci_dev *pdev,
41 const struct pci_device_id *entries)
42{
43 struct dw_mci *host;
44 int ret;
45
46 ret = pci_enable_device(pdev);
47 if (ret)
48 return ret;
49 if (pci_request_regions(pdev, "dw_mmc_pci")) {
50 ret = -ENODEV;
51 goto err_disable_dev;
52 }
53
54 host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL);
55 if (!host) {
56 ret = -ENOMEM;
57 goto err_release;
58 }
59
60 host->irq = pdev->irq;
61 host->irq_flags = IRQF_SHARED;
62 host->dev = pdev->dev;
63 host->pdata = &pci_board_data;
64
65 host->regs = pci_iomap(pdev, PCI_BAR_NO, COMPLETE_BAR);
66 if (!host->regs) {
67 ret = -EIO;
68 goto err_unmap;
69 }
70
71 pci_set_drvdata(pdev, host);
72 ret = dw_mci_probe(host);
73 if (ret)
74 goto err_probe_failed;
75 return ret;
76
77err_probe_failed:
78 pci_iounmap(pdev, host->regs);
79err_unmap:
80 kfree(host);
81err_release:
82 pci_release_regions(pdev);
83err_disable_dev:
84 pci_disable_device(pdev);
85 return ret;
86}
87
88static void __devexit dw_mci_pci_remove(struct pci_dev *pdev)
89{
90 struct dw_mci *host = pci_get_drvdata(pdev);
91
92 dw_mci_remove(host);
93 pci_set_drvdata(pdev, NULL);
94 pci_release_regions(pdev);
95 pci_iounmap(pdev, host->regs);
96 kfree(host);
97 pci_disable_device(pdev);
98}
99
100#ifdef CONFIG_PM_SLEEP
101static int dw_mci_pci_suspend(struct device *dev)
102{
103 int ret;
104 struct pci_dev *pdev = to_pci_dev(dev);
105 struct dw_mci *host = pci_get_drvdata(pdev);
106
107 ret = dw_mci_suspend(host);
108 return ret;
109}
110
111static int dw_mci_pci_resume(struct device *dev)
112{
113 int ret;
114 struct pci_dev *pdev = to_pci_dev(dev);
115 struct dw_mci *host = pci_get_drvdata(pdev);
116
117 ret = dw_mci_resume(host);
118 return ret;
119}
120#else
121#define dw_mci_pci_suspend NULL
122#define dw_mci_pci_resume NULL
123#endif /* CONFIG_PM_SLEEP */
124
125static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume);
126
127static DEFINE_PCI_DEVICE_TABLE(dw_mci_pci_id) = {
128 { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
129 {}
130};
131MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
132
133static struct pci_driver dw_mci_pci_driver = {
134 .name = "dw_mmc_pci",
135 .id_table = dw_mci_pci_id,
136 .probe = dw_mci_pci_probe,
137 .remove = dw_mci_pci_remove,
138 .driver = {
139 .pm = &dw_mci_pci_pmops
140 },
141};
142
143static int __init dw_mci_init(void)
144{
145 return pci_register_driver(&dw_mci_pci_driver);
146}
147
148static void __exit dw_mci_exit(void)
149{
150 pci_unregister_driver(&dw_mci_pci_driver);
151}
152
153module_init(dw_mci_init);
154module_exit(dw_mci_exit);
155
156MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
157MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
158MODULE_LICENSE("GPL v2");