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
27 static 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
dw_mci_pci_probe(struct pci_dev * pdev,const struct pci_device_id * entries)34 static 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
dw_mci_pci_remove(struct pci_dev * pdev)70 static 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
77 static 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
85 static const struct pci_device_id dw_mci_pci_id[] = {
86 { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
87 {}
88 };
89 MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
90
91 static 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
101 module_pci_driver(dw_mci_pci_driver);
102
103 MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
104 MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
105 MODULE_LICENSE("GPL v2");
106