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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/*
* pci.c - DesignWare HS OTG Controller PCI driver
*
* Copyright (C) 2004-2013 Synopsys, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The names of the above-listed copyright holders may not be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Provides the initialization and cleanup entry points for the DWC_otg PCI
* driver
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include <linux/usb/ch11.h>
#include "core.h"
#include "hcd.h"
#define PCI_VENDOR_ID_SYNOPSYS 0x16c3
#define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0
static const char dwc2_driver_name[] = "dwc2";
static const struct dwc2_core_params dwc2_module_params = {
.otg_cap = -1,
.otg_ver = -1,
.dma_enable = -1,
.dma_desc_enable = 0,
.speed = -1,
.enable_dynamic_fifo = -1,
.en_multiple_tx_fifo = -1,
.host_rx_fifo_size = 1024,
.host_nperio_tx_fifo_size = 256,
.host_perio_tx_fifo_size = 1024,
.max_transfer_size = 65535,
.max_packet_count = 511,
.host_channels = -1,
.phy_type = -1,
.phy_utmi_width = 16, /* 16 bits - NOT DETECTABLE */
.phy_ulpi_ddr = -1,
.phy_ulpi_ext_vbus = -1,
.i2c_enable = -1,
.ulpi_fs_ls = -1,
.host_support_fs_ls_low_power = -1,
.host_ls_low_power_phy_clk = -1,
.ts_dline = -1,
.reload_ctl = -1,
.ahb_single = -1,
};
/**
* dwc2_driver_remove() - Called when the DWC_otg core is unregistered with the
* DWC_otg driver
*
* @dev: Bus device
*
* This routine is called, for example, when the rmmod command is executed. The
* device may or may not be electrically present. If it is present, the driver
* stops device processing. Any resources used on behalf of this device are
* freed.
*/
static void dwc2_driver_remove(struct pci_dev *dev)
{
struct dwc2_hsotg *hsotg = pci_get_drvdata(dev);
dwc2_hcd_remove(hsotg);
pci_disable_device(dev);
}
/**
* dwc2_driver_probe() - Called when the DWC_otg core is bound to the DWC_otg
* driver
*
* @dev: Bus device
*
* This routine creates the driver components required to control the device
* (core, HCD, and PCD) and initializes the device. The driver components are
* stored in a dwc2_hsotg structure. A reference to the dwc2_hsotg is saved
* in the device private data. This allows the driver to access the dwc2_hsotg
* structure on subsequent calls to driver methods for this device.
*/
static int dwc2_driver_probe(struct pci_dev *dev,
const struct pci_device_id *id)
{
struct dwc2_hsotg *hsotg;
int retval;
hsotg = devm_kzalloc(&dev->dev, sizeof(*hsotg), GFP_KERNEL);
if (!hsotg)
return -ENOMEM;
hsotg->dev = &dev->dev;
hsotg->regs = devm_ioremap_resource(&dev->dev, &dev->resource[0]);
if (IS_ERR(hsotg->regs))
return PTR_ERR(hsotg->regs);
dev_dbg(&dev->dev, "mapped PA %08lx to VA %p\n",
(unsigned long)pci_resource_start(dev, 0), hsotg->regs);
if (pci_enable_device(dev) < 0)
return -ENODEV;
pci_set_master(dev);
retval = dwc2_hcd_init(hsotg, dev->irq, &dwc2_module_params);
if (retval) {
pci_disable_device(dev);
return retval;
}
pci_set_drvdata(dev, hsotg);
return retval;
}
static DEFINE_PCI_DEVICE_TABLE(dwc2_pci_ids) = {
{
PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
},
{
PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
PCI_DEVICE_ID_STMICRO_USB_OTG),
},
{ /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);
static struct pci_driver dwc2_pci_driver = {
.name = dwc2_driver_name,
.id_table = dwc2_pci_ids,
.probe = dwc2_driver_probe,
.remove = dwc2_driver_remove,
};
module_pci_driver(dwc2_pci_driver);
MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
MODULE_AUTHOR("Synopsys, Inc.");
MODULE_LICENSE("Dual BSD/GPL");
|
