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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
|
/*
* Freescale QUICC Engine USB Host Controller Driver
*
* Copyright (c) Freescale Semicondutor, Inc. 2006.
* Shlomi Gridish <gridish@freescale.com>
* Jerry Huang <Chang-Ming.Huang@freescale.com>
* Copyright (c) Logic Product Development, Inc. 2007
* Peter Barada <peterb@logicpd.com>
* Copyright (c) MontaVista Software, Inc. 2008.
* Anton Vorontsov <avorontsov@ru.mvista.com>
*
* 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/kernel.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/usb.h>
#include <linux/gpio.h>
#include <asm/qe.h>
#include "../core/hcd.h"
#include "fhci.h"
/* virtual root hub specific descriptor */
static u8 root_hub_des[] = {
0x09, /* blength */
0x29, /* bDescriptorType;hub-descriptor */
0x01, /* bNbrPorts */
0x00, /* wHubCharacteristics */
0x00,
0x01, /* bPwrOn2pwrGood;2ms */
0x00, /* bHubContrCurrent;0mA */
0x00, /* DeviceRemoveable */
0xff, /* PortPwrCtrlMask */
};
static void fhci_gpio_set_value(struct fhci_hcd *fhci, int gpio_nr, bool on)
{
int gpio = fhci->gpios[gpio_nr];
bool alow = fhci->alow_gpios[gpio_nr];
if (!gpio_is_valid(gpio))
return;
gpio_set_value(gpio, on ^ alow);
mdelay(5);
}
void fhci_config_transceiver(struct fhci_hcd *fhci,
enum fhci_port_status status)
{
fhci_dbg(fhci, "-> %s: %d\n", __func__, status);
switch (status) {
case FHCI_PORT_POWER_OFF:
fhci_gpio_set_value(fhci, GPIO_POWER, false);
break;
case FHCI_PORT_DISABLED:
case FHCI_PORT_WAITING:
fhci_gpio_set_value(fhci, GPIO_POWER, true);
break;
case FHCI_PORT_LOW:
fhci_gpio_set_value(fhci, GPIO_SPEED, false);
break;
case FHCI_PORT_FULL:
fhci_gpio_set_value(fhci, GPIO_SPEED, true);
break;
default:
WARN_ON(1);
break;
}
fhci_dbg(fhci, "<- %s: %d\n", __func__, status);
}
/* disable the USB port by clearing the EN bit in the USBMOD register */
void fhci_port_disable(struct fhci_hcd *fhci)
{
struct fhci_usb *usb = (struct fhci_usb *)fhci->usb_lld;
enum fhci_port_status port_status;
fhci_dbg(fhci, "-> %s\n", __func__);
fhci_stop_sof_timer(fhci);
fhci_flush_all_transmissions(usb);
fhci_usb_disable_interrupt((struct fhci_usb *)fhci->usb_lld);
port_status = usb->port_status;
usb->port_status = FHCI_PORT_DISABLED;
/* Enable IDLE since we want to know if something comes along */
usb->saved_msk |= USB_E_IDLE_MASK;
out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
/* check if during the disconnection process attached new device */
if (port_status == FHCI_PORT_WAITING)
fhci_device_connected_interrupt(fhci);
usb->vroot_hub->port.wPortStatus &= ~USB_PORT_STAT_ENABLE;
usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_ENABLE;
fhci_usb_enable_interrupt((struct fhci_usb *)fhci->usb_lld);
fhci_dbg(fhci, "<- %s\n", __func__);
}
/* enable the USB port by setting the EN bit in the USBMOD register */
void fhci_port_enable(void *lld)
{
struct fhci_usb *usb = (struct fhci_usb *)lld;
struct fhci_hcd *fhci = usb->fhci;
fhci_dbg(fhci, "-> %s\n", __func__);
fhci_config_transceiver(fhci, usb->port_status);
if ((usb->port_status != FHCI_PORT_FULL) &&
(usb->port_status != FHCI_PORT_LOW))
fhci_start_sof_timer(fhci);
usb->vroot_hub->port.wPortStatus |= USB_PORT_STAT_ENABLE;
usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_ENABLE;
fhci_dbg(fhci, "<- %s\n", __func__);
}
void fhci_io_port_generate_reset(struct fhci_hcd *fhci)
{
fhci_dbg(fhci, "-> %s\n", __func__);
gpio_direction_output(fhci->gpios[GPIO_USBOE], 0);
gpio_direction_output(fhci->gpios[GPIO_USBTP], 0);
gpio_direction_output(fhci->gpios[GPIO_USBTN], 0);
mdelay(5);
qe_pin_set_dedicated(fhci->pins[PIN_USBOE]);
qe_pin_set_dedicated(fhci->pins[PIN_USBTP]);
qe_pin_set_dedicated(fhci->pins[PIN_USBTN]);
fhci_dbg(fhci, "<- %s\n", __func__);
}
/* generate the RESET condition on the bus */
void fhci_port_reset(void *lld)
{
struct fhci_usb *usb = (struct fhci_usb *)lld;
struct fhci_hcd *fhci = usb->fhci;
u8 mode;
u16 mask;
fhci_dbg(fhci, "-> %s\n", __func__);
fhci_stop_sof_timer(fhci);
/* disable the USB controller */
mode = in_8(&fhci->regs->usb_mod);
out_8(&fhci->regs->usb_mod, mode & (~USB_MODE_EN));
/* disable idle interrupts */
mask = in_be16(&fhci->regs->usb_mask);
out_be16(&fhci->regs->usb_mask, mask & (~USB_E_IDLE_MASK));
fhci_io_port_generate_reset(fhci);
/* enable interrupt on this endpoint */
out_be16(&fhci->regs->usb_mask, mask);
/* enable the USB controller */
mode = in_8(&fhci->regs->usb_mod);
out_8(&fhci->regs->usb_mod, mode | USB_MODE_EN);
fhci_start_sof_timer(fhci);
fhci_dbg(fhci, "<- %s\n", __func__);
}
int fhci_hub_status_data(struct usb_hcd *hcd, char *buf)
{
struct fhci_hcd *fhci = hcd_to_fhci(hcd);
int ret = 0;
unsigned long flags;
fhci_dbg(fhci, "-> %s\n", __func__);
spin_lock_irqsave(&fhci->lock, flags);
if (fhci->vroot_hub->port.wPortChange & (USB_PORT_STAT_C_CONNECTION |
USB_PORT_STAT_C_ENABLE | USB_PORT_STAT_C_SUSPEND |
USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_OVERCURRENT)) {
*buf = 1 << 1;
ret = 1;
fhci_dbg(fhci, "-- %s\n", __func__);
}
spin_unlock_irqrestore(&fhci->lock, flags);
fhci_dbg(fhci, "<- %s\n", __func__);
return ret;
}
int fhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
u16 wIndex, char *buf, u16 wLength)
{
struct fhci_hcd *fhci = hcd_to_fhci(hcd);
int retval = 0;
int len = 0;
struct usb_hub_status *hub_status;
struct usb_port_status *port_status;
unsigned long flags;
spin_lock_irqsave(&fhci->lock, flags);
fhci_dbg(fhci, "-> %s\n", __func__);
switch (typeReq) {
case ClearHubFeature:
switch (wValue) {
case C_HUB_LOCAL_POWER:
case C_HUB_OVER_CURRENT:
break;
default:
goto error;
}
break;
case ClearPortFeature:
fhci->vroot_hub->feature &= (1 << wValue);
switch (wValue) {
case USB_PORT_FEAT_ENABLE:
fhci->vroot_hub->port.wPortStatus &=
~USB_PORT_STAT_ENABLE;
fhci_port_disable(fhci);
break;
case USB_PORT_FEAT_C_ENABLE:
fhci->vroot_hub->port.wPortChange &=
~USB_PORT_STAT_C_ENABLE;
break;
case USB_PORT_FEAT_SUSPEND:
fhci->vroot_hub->port.wPortStatus &=
~USB_PORT_STAT_SUSPEND;
fhci_stop_sof_timer(fhci);
break;
case USB_PORT_FEAT_C_SUSPEND:
fhci->vroot_hub->port.wPortChange &=
~USB_PORT_STAT_C_SUSPEND;
break;
case USB_PORT_FEAT_POWER:
fhci->vroot_hub->port.wPortStatus &=
~USB_PORT_STAT_POWER;
fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF);
break;
case USB_PORT_FEAT_C_CONNECTION:
fhci->vroot_hub->port.wPortChange &=
~USB_PORT_STAT_C_CONNECTION;
break;
case USB_PORT_FEAT_C_OVER_CURRENT:
fhci->vroot_hub->port.wPortChange &=
~USB_PORT_STAT_C_OVERCURRENT;
break;
case USB_PORT_FEAT_C_RESET:
fhci->vroot_hub->port.wPortChange &=
~USB_PORT_STAT_C_RESET;
break;
default:
goto error;
}
break;
case GetHubDescriptor:
memcpy(buf, root_hub_des, sizeof(root_hub_des));
buf[3] = 0x11; /* per-port power, no ovrcrnt */
len = (buf[0] < wLength) ? buf[0] : wLength;
break;
case GetHubStatus:
hub_status = (struct usb_hub_status *)buf;
hub_status->wHubStatus =
cpu_to_le16(fhci->vroot_hub->hub.wHubStatus);
hub_status->wHubChange =
cpu_to_le16(fhci->vroot_hub->hub.wHubChange);
len = 4;
break;
case GetPortStatus:
port_status = (struct usb_port_status *)buf;
port_status->wPortStatus =
cpu_to_le16(fhci->vroot_hub->port.wPortStatus);
port_status->wPortChange =
cpu_to_le16(fhci->vroot_hub->port.wPortChange);
len = 4;
break;
case SetHubFeature:
switch (wValue) {
case C_HUB_OVER_CURRENT:
case C_HUB_LOCAL_POWER:
break;
default:
goto error;
}
break;
case SetPortFeature:
fhci->vroot_hub->feature |= (1 << wValue);
switch (wValue) {
case USB_PORT_FEAT_ENABLE:
fhci->vroot_hub->port.wPortStatus |=
USB_PORT_STAT_ENABLE;
fhci_port_enable(fhci->usb_lld);
break;
case USB_PORT_FEAT_SUSPEND:
fhci->vroot_hub->port.wPortStatus |=
USB_PORT_STAT_SUSPEND;
fhci_stop_sof_timer(fhci);
break;
case USB_PORT_FEAT_RESET:
fhci->vroot_hub->port.wPortStatus |=
USB_PORT_STAT_RESET;
fhci_port_reset(fhci->usb_lld);
fhci->vroot_hub->port.wPortStatus |=
USB_PORT_STAT_ENABLE;
fhci->vroot_hub->port.wPortStatus &=
~USB_PORT_STAT_RESET;
break;
case USB_PORT_FEAT_POWER:
fhci->vroot_hub->port.wPortStatus |=
USB_PORT_STAT_POWER;
fhci_config_transceiver(fhci, FHCI_PORT_WAITING);
break;
default:
goto error;
}
break;
default:
error:
retval = -EPIPE;
}
fhci_dbg(fhci, "<- %s\n", __func__);
spin_unlock_irqrestore(&fhci->lock, flags);
return retval;
}
|
