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 SYNOPSYS_DW_MCI_VENDOR_ID 0x700
25#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
26/* Defining the Capabilities */
27#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
28				MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
29				MMC_CAP_SDIO_IRQ)
30
31static struct dw_mci_board pci_board_data = {
32	.num_slots			= 1,
33	.caps				= DW_MCI_CAPABILITIES,
34	.bus_hz				= 33 * 1000 * 1000,
35	.detect_delay_ms		= 200,
36	.fifo_depth			= 32,
37};
38
39static int dw_mci_pci_probe(struct pci_dev *pdev,
40			    const struct pci_device_id *entries)
41{
42	struct dw_mci *host;
43	int ret;
44
45	ret = pcim_enable_device(pdev);
46	if (ret)
47		return ret;
48
49	host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
50	if (!host)
51		return -ENOMEM;
52
53	host->irq = pdev->irq;
54	host->irq_flags = IRQF_SHARED;
55	host->dev = &pdev->dev;
56	host->pdata = &pci_board_data;
57
58	ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev));
59	if (ret)
60		return ret;
61
62	host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO];
63
64	pci_set_master(pdev);
65
66	ret = dw_mci_probe(host);
67	if (ret)
68		return ret;
69
70	pci_set_drvdata(pdev, host);
71
72	return 0;
73}
74
75static void dw_mci_pci_remove(struct pci_dev *pdev)
76{
77	struct dw_mci *host = pci_get_drvdata(pdev);
78
79	dw_mci_remove(host);
80}
81
82#ifdef CONFIG_PM_SLEEP
83static int dw_mci_pci_suspend(struct device *dev)
84{
85	struct pci_dev *pdev = to_pci_dev(dev);
86	struct dw_mci *host = pci_get_drvdata(pdev);
87
88	return dw_mci_suspend(host);
89}
90
91static int dw_mci_pci_resume(struct device *dev)
92{
93	struct pci_dev *pdev = to_pci_dev(dev);
94	struct dw_mci *host = pci_get_drvdata(pdev);
95
96	return dw_mci_resume(host);
97}
98#endif /* CONFIG_PM_SLEEP */
99
100static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume);
101
102static const struct pci_device_id dw_mci_pci_id[] = {
103	{ PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
104	{}
105};
106MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
107
108static struct pci_driver dw_mci_pci_driver = {
109	.name		= "dw_mmc_pci",
110	.id_table	= dw_mci_pci_id,
111	.probe		= dw_mci_pci_probe,
112	.remove		= dw_mci_pci_remove,
113	.driver		=	{
114		.pm =   &dw_mci_pci_pmops
115	},
116};
117
118module_pci_driver(dw_mci_pci_driver);
119
120MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
121MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
122MODULE_LICENSE("GPL v2");
123