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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -583,7 +583,6 @@ static int ohci_run (struct ohci_hcd *oh
/* boot firmware should have set this up (5.1.1.3.1) */
if (first) {
-
val = ohci_readl (ohci, &ohci->regs->fminterval);
ohci->fminterval = val & 0x3fff;
if (ohci->fminterval != FI)
@@ -667,6 +666,9 @@ retry:
periodic_reinit (ohci);
+ if (ohci->flags & OHCI_QUIRK_INIT_FMINTERVAL)
+ ohci_writel (ohci, ohci->fminterval, &ohci->regs->fminterval);
+
/* some OHCI implementations are finicky about how they init.
* bogus values here mean not even enumeration could work.
*/
@@ -1061,6 +1063,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ohci_hcd_da8xx_driver
#endif
+#ifdef CONFIG_ARCH_CNS21XX
+#include "ohci-cns21xx.c"
+#define PLATFORM_DRIVER ohci_cns21xx_driver
+#endif
+
#if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
defined(CONFIG_CPU_SUBTYPE_SH7721) || \
defined(CONFIG_CPU_SUBTYPE_SH7763) || \
--- /dev/null
+++ b/drivers/usb/host/ohci-cns21xx.c
@@ -0,0 +1,175 @@
+/*
+ * Copyright (c) 2008 Cavium Networks
+ * Copyright (c) 2010 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/platform_device.h>
+
+#include <mach/cns21xx.h>
+
+#define DRIVER_NAME "cns21xx-ohci"
+
+static int __devinit cns21xx_ohci_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+
+ ret = ohci_init(ohci);
+ if (ret)
+ return ret;
+
+ ret = ohci_run(ohci);
+ if (ret) {
+ err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);
+ goto err;
+ }
+
+ return 0;
+
+err:
+ ohci_stop(hcd);
+ return ret;
+}
+
+static const struct hc_driver ohci_cns21xx_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "cns21xx-ohci",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ohci_irq,
+ .flags = HCD_USB11 | HCD_MEMORY,
+
+ /*
+ * basic lifecycle operations
+ */
+ .start = cns21xx_ohci_start,
+ .stop = ohci_stop,
+ .shutdown = ohci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ohci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ohci_hub_status_data,
+ .hub_control = ohci_hub_control,
+ .start_port_reset = ohci_start_port_reset,
+};
+
+static void cns21xx_ohci_init_hc(void)
+{
+ __raw_writel(0x146, CNS21XX_OHCI_CONFIG_BASE_VIRT + 0x04);
+ __raw_writel(0x200, CNS21XX_OHCI_CONFIG_BASE_VIRT + 0x44);
+ msleep(100);
+}
+
+static int ohci_cns21xx_probe(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd;
+ struct resource *res;
+ struct ohci_hcd *ohci;
+ int irq;
+ int ret;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res) {
+ dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
+ dev_name(&pdev->dev));
+ return -ENODEV;
+ }
+ irq = res->start;
+
+ hcd = usb_create_hcd(&ohci_cns21xx_hc_driver, &pdev->dev,
+ dev_name(&pdev->dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_dbg(&pdev->dev, "no base address specified for %s\n",
+ dev_name(&pdev->dev));
+ ret = -ENODEV;
+ goto err_put_hcd;
+ }
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = res->end - res->start + 1;
+
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ dev_dbg(&pdev->dev, "controller already in use\n");
+ ret = -EBUSY;
+ goto err_put_hcd;
+ }
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ dev_dbg(&pdev->dev, "error mapping memory\n");
+ ret = -EFAULT;
+ goto err_release_region;
+ }
+
+ cns21xx_ohci_init_hc();
+
+ ohci = hcd_to_ohci(hcd);
+ ohci->flags |= OHCI_QUIRK_INIT_FMINTERVAL;
+ ohci_hcd_init(ohci);
+
+ ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+ if (ret)
+ goto err_unmap;
+
+ platform_set_drvdata(pdev, hcd);
+ return 0;
+
+err_unmap:
+ iounmap(hcd->regs);
+err_release_region:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err_put_hcd:
+ usb_put_hcd(hcd);
+ return ret;
+}
+
+static int ohci_cns21xx_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ usb_remove_hcd(hcd);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver ohci_cns21xx_driver = {
+ .probe = ohci_cns21xx_probe,
+ .remove = ohci_cns21xx_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = DRIVER_NAME,
+ },
+};
+
+MODULE_ALIAS("platform:" DRIVER_NAME);
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -403,6 +403,7 @@ struct ohci_hcd {
#define OHCI_QUIRK_HUB_POWER 0x100 /* distrust firmware power/oc setup */
#define OHCI_QUIRK_AMD_ISO 0x200 /* ISO transfers*/
#define OHCI_QUIRK_AMD_PREFETCH 0x400 /* pre-fetch for ISO transfer */
+#define OHCI_QUIRK_INIT_FMINTERVAL 0x800 /* fminterval must be initialized */
// there are also chip quirks/bugs in init logic
struct work_struct nec_work; /* Worker for NEC quirk */
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -299,6 +299,7 @@ config ARCH_CNS21XX
select PLAT_FA_GPIO
select ARCH_REQUIRE_GPIOLIB
select ARM_L1_CACHE_SHIFT_4
+ select USB_ARCH_HAS_OHCI
help
Support for Cavium Networks CNS21xx family.
|
