2 * Synopsys DesignWare Multimedia Card PCI Interface driver
4 * Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
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.
12 #include <linux/interrupt.h>
13 #include <linux/module.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>
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 |\
32 static struct dw_mci_board pci_board_data = {
34 .caps = DW_MCI_CAPABILITIES,
35 .bus_hz = 33 * 1000 * 1000,
36 .detect_delay_ms = 200,
40 static int __devinit dw_mci_pci_probe(struct pci_dev *pdev,
41 const struct pci_device_id *entries)
46 ret = pci_enable_device(pdev);
49 if (pci_request_regions(pdev, "dw_mmc_pci")) {
54 host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL);
60 host->irq = pdev->irq;
61 host->irq_flags = IRQF_SHARED;
62 host->dev = pdev->dev;
63 host->pdata = &pci_board_data;
65 host->regs = pci_iomap(pdev, PCI_BAR_NO, COMPLETE_BAR);
71 pci_set_drvdata(pdev, host);
72 ret = dw_mci_probe(host);
74 goto err_probe_failed;
78 pci_iounmap(pdev, host->regs);
82 pci_release_regions(pdev);
84 pci_disable_device(pdev);
88 static void __devexit dw_mci_pci_remove(struct pci_dev *pdev)
90 struct dw_mci *host = pci_get_drvdata(pdev);
93 pci_set_drvdata(pdev, NULL);
94 pci_release_regions(pdev);
95 pci_iounmap(pdev, host->regs);
97 pci_disable_device(pdev);
100 #ifdef CONFIG_PM_SLEEP
101 static int dw_mci_pci_suspend(struct device *dev)
104 struct pci_dev *pdev = to_pci_dev(dev);
105 struct dw_mci *host = pci_get_drvdata(pdev);
107 ret = dw_mci_suspend(host);
111 static int dw_mci_pci_resume(struct device *dev)
114 struct pci_dev *pdev = to_pci_dev(dev);
115 struct dw_mci *host = pci_get_drvdata(pdev);
117 ret = dw_mci_resume(host);
121 #define dw_mci_pci_suspend NULL
122 #define dw_mci_pci_resume NULL
123 #endif /* CONFIG_PM_SLEEP */
125 static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume);
127 static DEFINE_PCI_DEVICE_TABLE(dw_mci_pci_id) = {
128 { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
131 MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
133 static 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,
139 .pm = &dw_mci_pci_pmops
143 static int __init dw_mci_init(void)
145 return pci_register_driver(&dw_mci_pci_driver);
148 static void __exit dw_mci_exit(void)
150 pci_unregister_driver(&dw_mci_pci_driver);
153 module_init(dw_mci_init);
154 module_exit(dw_mci_exit);
156 MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
157 MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
158 MODULE_LICENSE("GPL v2");