1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/*
* Synopsys DesignWare Multimedia Card PCI Interface driver
*
* Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/dw_mmc.h>
#include "dw_mmc.h"
#define PCI_BAR_NO 2
#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
/* Defining the Capabilities */
#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
MMC_CAP_SDIO_IRQ)
static struct dw_mci_board pci_board_data = {
.num_slots = 1,
.caps = DW_MCI_CAPABILITIES,
.bus_hz = 33 * 1000 * 1000,
.detect_delay_ms = 200,
.fifo_depth = 32,
};
static int dw_mci_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *entries)
{
struct dw_mci *host;
int ret;
ret = pcim_enable_device(pdev);
if (ret)
return ret;
host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
if (!host)
return -ENOMEM;
host->irq = pdev->irq;
host->irq_flags = IRQF_SHARED;
host->dev = &pdev->dev;
host->pdata = &pci_board_data;
ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev));
if (ret)
return ret;
host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO];
ret = dw_mci_probe(host);
if (ret)
return ret;
pci_set_drvdata(pdev, host);
return 0;
}
static void dw_mci_pci_remove(struct pci_dev *pdev)
{
struct dw_mci *host = pci_get_drvdata(pdev);
dw_mci_remove(host);
}
#ifdef CONFIG_PM_SLEEP
static int dw_mci_pci_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct dw_mci *host = pci_get_drvdata(pdev);
return dw_mci_suspend(host);
}
static int dw_mci_pci_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct dw_mci *host = pci_get_drvdata(pdev);
return dw_mci_resume(host);
}
#else
#define dw_mci_pci_suspend NULL
#define dw_mci_pci_resume NULL
#endif /* CONFIG_PM_SLEEP */
static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume);
static DEFINE_PCI_DEVICE_TABLE(dw_mci_pci_id) = {
{ PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
{}
};
MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
static struct pci_driver dw_mci_pci_driver = {
.name = "dw_mmc_pci",
.id_table = dw_mci_pci_id,
.probe = dw_mci_pci_probe,
.remove = dw_mci_pci_remove,
.driver = {
.pm = &dw_mci_pci_pmops
},
};
module_pci_driver(dw_mci_pci_driver);
MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
MODULE_LICENSE("GPL v2");
|
