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-rw-r--r--drivers/usb/gadget/Kconfig16
-rw-r--r--drivers/usb/gadget/Makefile2
-rw-r--r--drivers/usb/gadget/at91_udc.c2
-rw-r--r--drivers/usb/gadget/dummy_hcd.c8
-rw-r--r--drivers/usb/gadget/ether.c9
-rw-r--r--drivers/usb/gadget/gmidi.c1337
-rw-r--r--drivers/usb/gadget/inode.c67
-rw-r--r--drivers/usb/gadget/net2280.c156
-rw-r--r--drivers/usb/gadget/omap_udc.c4
-rw-r--r--drivers/usb/gadget/pxa2xx_udc.c70
-rw-r--r--drivers/usb/gadget/pxa2xx_udc.h24
-rw-r--r--drivers/usb/gadget/serial.c3
12 files changed, 1583 insertions, 115 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 1a32d96774b4..8e5dd6f29d0b 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -26,7 +26,7 @@ config USB_GADGET
26 you need a low level bus controller driver, and some software 26 you need a low level bus controller driver, and some software
27 talking to it. Peripheral controllers are often discrete silicon, 27 talking to it. Peripheral controllers are often discrete silicon,
28 or are integrated with the CPU in a microcontroller. The more 28 or are integrated with the CPU in a microcontroller. The more
29 familiar host side controllers have names like like "EHCI", "OHCI", 29 familiar host side controllers have names like "EHCI", "OHCI",
30 or "UHCI", and are usually integrated into southbridges on PC 30 or "UHCI", and are usually integrated into southbridges on PC
31 motherboards. 31 motherboards.
32 32
@@ -404,6 +404,20 @@ config USB_G_SERIAL
404 which includes instructions and a "driver info file" needed to 404 which includes instructions and a "driver info file" needed to
405 make MS-Windows work with this driver. 405 make MS-Windows work with this driver.
406 406
407config USB_MIDI_GADGET
408 tristate "MIDI Gadget (EXPERIMENTAL)"
409 depends on SND && EXPERIMENTAL
410 select SND_RAWMIDI
411 help
412 The MIDI Gadget acts as a USB Audio device, with one MIDI
413 input and one MIDI output. These MIDI jacks appear as
414 a sound "card" in the ALSA sound system. Other MIDI
415 connections can then be made on the gadget system, using
416 ALSA's aconnect utility etc.
417
418 Say "y" to link the driver statically, or "m" to build a
419 dynamically linked module called "g_midi".
420
407 421
408# put drivers that need isochronous transfer support (for audio 422# put drivers that need isochronous transfer support (for audio
409# or video class gadget drivers), or specific hardware, here. 423# or video class gadget drivers), or specific hardware, here.
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 5a28e61392ec..e71e086a1cfa 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_USB_AT91) += at91_udc.o
15g_zero-objs := zero.o usbstring.o config.o epautoconf.o 15g_zero-objs := zero.o usbstring.o config.o epautoconf.o
16g_ether-objs := ether.o usbstring.o config.o epautoconf.o 16g_ether-objs := ether.o usbstring.o config.o epautoconf.o
17g_serial-objs := serial.o usbstring.o config.o epautoconf.o 17g_serial-objs := serial.o usbstring.o config.o epautoconf.o
18g_midi-objs := gmidi.o usbstring.o config.o epautoconf.o
18gadgetfs-objs := inode.o 19gadgetfs-objs := inode.o
19g_file_storage-objs := file_storage.o usbstring.o config.o \ 20g_file_storage-objs := file_storage.o usbstring.o config.o \
20 epautoconf.o 21 epautoconf.o
@@ -28,4 +29,5 @@ obj-$(CONFIG_USB_ETH) += g_ether.o
28obj-$(CONFIG_USB_GADGETFS) += gadgetfs.o 29obj-$(CONFIG_USB_GADGETFS) += gadgetfs.o
29obj-$(CONFIG_USB_FILE_STORAGE) += g_file_storage.o 30obj-$(CONFIG_USB_FILE_STORAGE) += g_file_storage.o
30obj-$(CONFIG_USB_G_SERIAL) += g_serial.o 31obj-$(CONFIG_USB_G_SERIAL) += g_serial.o
32obj-$(CONFIG_USB_MIDI_GADGET) += g_midi.o
31 33
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index cfebca05ead5..d00958a01cfb 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -247,7 +247,7 @@ static int proc_udc_open(struct inode *inode, struct file *file)
247 return single_open(file, proc_udc_show, PDE(inode)->data); 247 return single_open(file, proc_udc_show, PDE(inode)->data);
248} 248}
249 249
250static struct file_operations proc_ops = { 250static const struct file_operations proc_ops = {
251 .open = proc_udc_open, 251 .open = proc_udc_open,
252 .read = seq_read, 252 .read = seq_read,
253 .llseek = seq_lseek, 253 .llseek = seq_lseek,
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index 7d1c22c34957..fdab97a27c08 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -889,11 +889,9 @@ EXPORT_SYMBOL (net2280_set_fifo_mode);
889static void 889static void
890dummy_gadget_release (struct device *dev) 890dummy_gadget_release (struct device *dev)
891{ 891{
892#if 0 /* usb_bus_put isn't EXPORTed! */
893 struct dummy *dum = gadget_dev_to_dummy (dev); 892 struct dummy *dum = gadget_dev_to_dummy (dev);
894 893
895 usb_bus_put (&dummy_to_hcd (dum)->self); 894 usb_put_hcd (dummy_to_hcd (dum));
896#endif
897} 895}
898 896
899static int dummy_udc_probe (struct platform_device *pdev) 897static int dummy_udc_probe (struct platform_device *pdev)
@@ -915,9 +913,7 @@ static int dummy_udc_probe (struct platform_device *pdev)
915 if (rc < 0) 913 if (rc < 0)
916 return rc; 914 return rc;
917 915
918#if 0 /* usb_bus_get isn't EXPORTed! */ 916 usb_get_hcd (dummy_to_hcd (dum));
919 usb_bus_get (&dummy_to_hcd (dum)->self);
920#endif
921 917
922 platform_set_drvdata (pdev, dum); 918 platform_set_drvdata (pdev, dum);
923 device_create_file (&dum->gadget.dev, &dev_attr_function); 919 device_create_file (&dum->gadget.dev, &dev_attr_function);
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 30299c620d97..366dc0a9e52c 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -262,7 +262,7 @@ MODULE_PARM_DESC(host_addr, "Host Ethernet Address");
262#define DEV_CONFIG_CDC 262#define DEV_CONFIG_CDC
263#endif 263#endif
264 264
265#ifdef CONFIG_USB_GADGET_MUSBHDRC 265#ifdef CONFIG_USB_GADGET_MUSB_HDRC
266#define DEV_CONFIG_CDC 266#define DEV_CONFIG_CDC
267#endif 267#endif
268 268
@@ -2014,7 +2014,7 @@ rndis_control_ack_complete (struct usb_ep *ep, struct usb_request *req)
2014static int rndis_control_ack (struct net_device *net) 2014static int rndis_control_ack (struct net_device *net)
2015{ 2015{
2016 struct eth_dev *dev = netdev_priv(net); 2016 struct eth_dev *dev = netdev_priv(net);
2017 u32 length; 2017 int length;
2018 struct usb_request *resp = dev->stat_req; 2018 struct usb_request *resp = dev->stat_req;
2019 2019
2020 /* in case RNDIS calls this after disconnect */ 2020 /* in case RNDIS calls this after disconnect */
@@ -2230,6 +2230,9 @@ eth_bind (struct usb_gadget *gadget)
2230 if (gadget_is_pxa (gadget)) { 2230 if (gadget_is_pxa (gadget)) {
2231 /* pxa doesn't support altsettings */ 2231 /* pxa doesn't support altsettings */
2232 cdc = 0; 2232 cdc = 0;
2233 } else if (gadget_is_musbhdrc(gadget)) {
2234 /* reduce tx dma overhead by avoiding special cases */
2235 zlp = 0;
2233 } else if (gadget_is_sh(gadget)) { 2236 } else if (gadget_is_sh(gadget)) {
2234 /* sh doesn't support multiple interfaces or configs */ 2237 /* sh doesn't support multiple interfaces or configs */
2235 cdc = 0; 2238 cdc = 0;
@@ -2564,7 +2567,7 @@ static struct usb_gadget_driver eth_driver = {
2564 2567
2565 .function = (char *) driver_desc, 2568 .function = (char *) driver_desc,
2566 .bind = eth_bind, 2569 .bind = eth_bind,
2567 .unbind = __exit_p(eth_unbind), 2570 .unbind = eth_unbind,
2568 2571
2569 .setup = eth_setup, 2572 .setup = eth_setup,
2570 .disconnect = eth_disconnect, 2573 .disconnect = eth_disconnect,
diff --git a/drivers/usb/gadget/gmidi.c b/drivers/usb/gadget/gmidi.c
new file mode 100644
index 000000000000..b68cecd57411
--- /dev/null
+++ b/drivers/usb/gadget/gmidi.c
@@ -0,0 +1,1337 @@
1/*
2 * gmidi.c -- USB MIDI Gadget Driver
3 *
4 * Copyright (C) 2006 Thumtronics Pty Ltd.
5 * Developed for Thumtronics by Grey Innovation
6 * Ben Williamson <ben.williamson@greyinnovation.com>
7 *
8 * This software is distributed under the terms of the GNU General Public
9 * License ("GPL") version 2, as published by the Free Software Foundation.
10 *
11 * This code is based in part on:
12 *
13 * Gadget Zero driver, Copyright (C) 2003-2004 David Brownell.
14 * USB Audio driver, Copyright (C) 2002 by Takashi Iwai.
15 * USB MIDI driver, Copyright (C) 2002-2005 Clemens Ladisch.
16 *
17 * Refer to the USB Device Class Definition for MIDI Devices:
18 * http://www.usb.org/developers/devclass_docs/midi10.pdf
19 */
20
21#define DEBUG 1
22// #define VERBOSE
23
24#include <linux/config.h>
25#include <linux/module.h>
26#include <linux/kernel.h>
27#include <linux/delay.h>
28#include <linux/errno.h>
29#include <linux/init.h>
30#include <linux/utsname.h>
31#include <linux/device.h>
32#include <linux/moduleparam.h>
33
34#include <sound/driver.h>
35#include <sound/core.h>
36#include <sound/initval.h>
37#include <sound/rawmidi.h>
38
39#include <linux/usb_ch9.h>
40#include <linux/usb_gadget.h>
41#include <linux/usb/audio.h>
42#include <linux/usb/midi.h>
43
44#include "gadget_chips.h"
45
46MODULE_AUTHOR("Ben Williamson");
47MODULE_LICENSE("GPL v2");
48
49#define DRIVER_VERSION "25 Jul 2006"
50
51static const char shortname[] = "g_midi";
52static const char longname[] = "MIDI Gadget";
53
54static int index = SNDRV_DEFAULT_IDX1;
55static char *id = SNDRV_DEFAULT_STR1;
56
57module_param(index, int, 0444);
58MODULE_PARM_DESC(index, "Index value for the USB MIDI Gadget adapter.");
59module_param(id, charp, 0444);
60MODULE_PARM_DESC(id, "ID string for the USB MIDI Gadget adapter.");
61
62/* Some systems will want different product identifers published in the
63 * device descriptor, either numbers or strings or both. These string
64 * parameters are in UTF-8 (superset of ASCII's 7 bit characters).
65 */
66
67static ushort idVendor;
68module_param(idVendor, ushort, S_IRUGO);
69MODULE_PARM_DESC(idVendor, "USB Vendor ID");
70
71static ushort idProduct;
72module_param(idProduct, ushort, S_IRUGO);
73MODULE_PARM_DESC(idProduct, "USB Product ID");
74
75static ushort bcdDevice;
76module_param(bcdDevice, ushort, S_IRUGO);
77MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)");
78
79static char *iManufacturer;
80module_param(iManufacturer, charp, S_IRUGO);
81MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string");
82
83static char *iProduct;
84module_param(iProduct, charp, S_IRUGO);
85MODULE_PARM_DESC(iProduct, "USB Product string");
86
87static char *iSerialNumber;
88module_param(iSerialNumber, charp, S_IRUGO);
89MODULE_PARM_DESC(iSerialNumber, "SerialNumber");
90
91/*
92 * this version autoconfigures as much as possible,
93 * which is reasonable for most "bulk-only" drivers.
94 */
95static const char *EP_IN_NAME;
96static const char *EP_OUT_NAME;
97
98
99/* big enough to hold our biggest descriptor */
100#define USB_BUFSIZ 256
101
102
103/* This is a gadget, and the IN/OUT naming is from the host's perspective.
104 USB -> OUT endpoint -> rawmidi
105 USB <- IN endpoint <- rawmidi */
106struct gmidi_in_port {
107 struct gmidi_device* dev;
108 int active;
109 uint8_t cable; /* cable number << 4 */
110 uint8_t state;
111#define STATE_UNKNOWN 0
112#define STATE_1PARAM 1
113#define STATE_2PARAM_1 2
114#define STATE_2PARAM_2 3
115#define STATE_SYSEX_0 4
116#define STATE_SYSEX_1 5
117#define STATE_SYSEX_2 6
118 uint8_t data[2];
119};
120
121struct gmidi_device {
122 spinlock_t lock;
123 struct usb_gadget *gadget;
124 struct usb_request *req; /* for control responses */
125 u8 config;
126 struct usb_ep *in_ep, *out_ep;
127 struct snd_card *card;
128 struct snd_rawmidi *rmidi;
129 struct snd_rawmidi_substream *in_substream;
130 struct snd_rawmidi_substream *out_substream;
131
132 /* For the moment we only support one port in
133 each direction, but in_port is kept as a
134 separate struct so we can have more later. */
135 struct gmidi_in_port in_port;
136 unsigned long out_triggered;
137 struct tasklet_struct tasklet;
138};
139
140static void gmidi_transmit(struct gmidi_device* dev, struct usb_request* req);
141
142
143#define xprintk(d,level,fmt,args...) \
144 dev_printk(level , &(d)->gadget->dev , fmt , ## args)
145
146#ifdef DEBUG
147#define DBG(dev,fmt,args...) \
148 xprintk(dev , KERN_DEBUG , fmt , ## args)
149#else
150#define DBG(dev,fmt,args...) \
151 do { } while (0)
152#endif /* DEBUG */
153
154#ifdef VERBOSE
155#define VDBG DBG
156#else
157#define VDBG(dev,fmt,args...) \
158 do { } while (0)
159#endif /* VERBOSE */
160
161#define ERROR(dev,fmt,args...) \
162 xprintk(dev , KERN_ERR , fmt , ## args)
163#define WARN(dev,fmt,args...) \
164 xprintk(dev , KERN_WARNING , fmt , ## args)
165#define INFO(dev,fmt,args...) \
166 xprintk(dev , KERN_INFO , fmt , ## args)
167
168
169static unsigned buflen = 256;
170static unsigned qlen = 32;
171
172module_param(buflen, uint, S_IRUGO);
173module_param(qlen, uint, S_IRUGO);
174
175
176/* Thanks to Grey Innovation for donating this product ID.
177 *
178 * DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!!
179 * Instead: allocate your own, using normal USB-IF procedures.
180 */
181#define DRIVER_VENDOR_NUM 0x17b3 /* Grey Innovation */
182#define DRIVER_PRODUCT_NUM 0x0004 /* Linux-USB "MIDI Gadget" */
183
184
185/*
186 * DESCRIPTORS ... most are static, but strings and (full)
187 * configuration descriptors are built on demand.
188 */
189
190#define STRING_MANUFACTURER 25
191#define STRING_PRODUCT 42
192#define STRING_SERIAL 101
193#define STRING_MIDI_GADGET 250
194
195/* We only have the one configuration, it's number 1. */
196#define GMIDI_CONFIG 1
197
198/* We have two interfaces- AudioControl and MIDIStreaming */
199#define GMIDI_AC_INTERFACE 0
200#define GMIDI_MS_INTERFACE 1
201#define GMIDI_NUM_INTERFACES 2
202
203DECLARE_USB_AC_HEADER_DESCRIPTOR(1);
204DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(1);
205DECLARE_USB_MS_ENDPOINT_DESCRIPTOR(1);
206
207/* B.1 Device Descriptor */
208static struct usb_device_descriptor device_desc = {
209 .bLength = USB_DT_DEVICE_SIZE,
210 .bDescriptorType = USB_DT_DEVICE,
211 .bcdUSB = __constant_cpu_to_le16(0x0200),
212 .bDeviceClass = USB_CLASS_PER_INTERFACE,
213 .idVendor = __constant_cpu_to_le16(DRIVER_VENDOR_NUM),
214 .idProduct = __constant_cpu_to_le16(DRIVER_PRODUCT_NUM),
215 .iManufacturer = STRING_MANUFACTURER,
216 .iProduct = STRING_PRODUCT,
217 .bNumConfigurations = 1,
218};
219
220/* B.2 Configuration Descriptor */
221static struct usb_config_descriptor config_desc = {
222 .bLength = USB_DT_CONFIG_SIZE,
223 .bDescriptorType = USB_DT_CONFIG,
224 /* compute wTotalLength on the fly */
225 .bNumInterfaces = GMIDI_NUM_INTERFACES,
226 .bConfigurationValue = GMIDI_CONFIG,
227 .iConfiguration = STRING_MIDI_GADGET,
228 /*
229 * FIXME: When embedding this driver in a device,
230 * these need to be set to reflect the actual
231 * power properties of the device. Is it selfpowered?
232 */
233 .bmAttributes = USB_CONFIG_ATT_ONE,
234 .bMaxPower = 1,
235};
236
237/* B.3.1 Standard AC Interface Descriptor */
238static const struct usb_interface_descriptor ac_interface_desc = {
239 .bLength = USB_DT_INTERFACE_SIZE,
240 .bDescriptorType = USB_DT_INTERFACE,
241 .bInterfaceNumber = GMIDI_AC_INTERFACE,
242 .bNumEndpoints = 0,
243 .bInterfaceClass = USB_CLASS_AUDIO,
244 .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL,
245 .iInterface = STRING_MIDI_GADGET,
246};
247
248/* B.3.2 Class-Specific AC Interface Descriptor */
249static const struct usb_ac_header_descriptor_1 ac_header_desc = {
250 .bLength = USB_DT_AC_HEADER_SIZE(1),
251 .bDescriptorType = USB_DT_CS_INTERFACE,
252 .bDescriptorSubtype = USB_MS_HEADER,
253 .bcdADC = __constant_cpu_to_le16(0x0100),
254 .wTotalLength = USB_DT_AC_HEADER_SIZE(1),
255 .bInCollection = 1,
256 .baInterfaceNr = {
257 [0] = GMIDI_MS_INTERFACE,
258 }
259};
260
261/* B.4.1 Standard MS Interface Descriptor */
262static const struct usb_interface_descriptor ms_interface_desc = {
263 .bLength = USB_DT_INTERFACE_SIZE,
264 .bDescriptorType = USB_DT_INTERFACE,
265 .bInterfaceNumber = GMIDI_MS_INTERFACE,
266 .bNumEndpoints = 2,
267 .bInterfaceClass = USB_CLASS_AUDIO,
268 .bInterfaceSubClass = USB_SUBCLASS_MIDISTREAMING,
269 .iInterface = STRING_MIDI_GADGET,
270};
271
272/* B.4.2 Class-Specific MS Interface Descriptor */
273static const struct usb_ms_header_descriptor ms_header_desc = {
274 .bLength = USB_DT_MS_HEADER_SIZE,
275 .bDescriptorType = USB_DT_CS_INTERFACE,
276 .bDescriptorSubtype = USB_MS_HEADER,
277 .bcdMSC = __constant_cpu_to_le16(0x0100),
278 .wTotalLength = USB_DT_MS_HEADER_SIZE
279 + 2*USB_DT_MIDI_IN_SIZE
280 + 2*USB_DT_MIDI_OUT_SIZE(1),
281};
282
283#define JACK_IN_EMB 1
284#define JACK_IN_EXT 2
285#define JACK_OUT_EMB 3
286#define JACK_OUT_EXT 4
287
288/* B.4.3 MIDI IN Jack Descriptors */
289static const struct usb_midi_in_jack_descriptor jack_in_emb_desc = {
290 .bLength = USB_DT_MIDI_IN_SIZE,
291 .bDescriptorType = USB_DT_CS_INTERFACE,
292 .bDescriptorSubtype = USB_MS_MIDI_IN_JACK,
293 .bJackType = USB_MS_EMBEDDED,
294 .bJackID = JACK_IN_EMB,
295};
296
297static const struct usb_midi_in_jack_descriptor jack_in_ext_desc = {
298 .bLength = USB_DT_MIDI_IN_SIZE,
299 .bDescriptorType = USB_DT_CS_INTERFACE,
300 .bDescriptorSubtype = USB_MS_MIDI_IN_JACK,
301 .bJackType = USB_MS_EXTERNAL,
302 .bJackID = JACK_IN_EXT,
303};
304
305/* B.4.4 MIDI OUT Jack Descriptors */
306static const struct usb_midi_out_jack_descriptor_1 jack_out_emb_desc = {
307 .bLength = USB_DT_MIDI_OUT_SIZE(1),
308 .bDescriptorType = USB_DT_CS_INTERFACE,
309 .bDescriptorSubtype = USB_MS_MIDI_OUT_JACK,
310 .bJackType = USB_MS_EMBEDDED,
311 .bJackID = JACK_OUT_EMB,
312 .bNrInputPins = 1,
313 .pins = {
314 [0] = {
315 .baSourceID = JACK_IN_EXT,
316 .baSourcePin = 1,
317 }
318 }
319};
320
321static const struct usb_midi_out_jack_descriptor_1 jack_out_ext_desc = {
322 .bLength = USB_DT_MIDI_OUT_SIZE(1),
323 .bDescriptorType = USB_DT_CS_INTERFACE,
324 .bDescriptorSubtype = USB_MS_MIDI_OUT_JACK,
325 .bJackType = USB_MS_EXTERNAL,
326 .bJackID = JACK_OUT_EXT,
327 .bNrInputPins = 1,
328 .pins = {
329 [0] = {
330 .baSourceID = JACK_IN_EMB,
331 .baSourcePin = 1,
332 }
333 }
334};
335
336/* B.5.1 Standard Bulk OUT Endpoint Descriptor */
337static struct usb_endpoint_descriptor bulk_out_desc = {
338 .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
339 .bDescriptorType = USB_DT_ENDPOINT,
340 .bEndpointAddress = USB_DIR_OUT,
341 .bmAttributes = USB_ENDPOINT_XFER_BULK,
342};
343
344/* B.5.2 Class-specific MS Bulk OUT Endpoint Descriptor */
345static const struct usb_ms_endpoint_descriptor_1 ms_out_desc = {
346 .bLength = USB_DT_MS_ENDPOINT_SIZE(1),
347 .bDescriptorType = USB_DT_CS_ENDPOINT,
348 .bDescriptorSubtype = USB_MS_GENERAL,
349 .bNumEmbMIDIJack = 1,
350 .baAssocJackID = {
351 [0] = JACK_IN_EMB,
352 }
353};
354
355/* B.6.1 Standard Bulk IN Endpoint Descriptor */
356static struct usb_endpoint_descriptor bulk_in_desc = {
357 .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
358 .bDescriptorType = USB_DT_ENDPOINT,
359 .bEndpointAddress = USB_DIR_IN,
360 .bmAttributes = USB_ENDPOINT_XFER_BULK,
361};
362
363/* B.6.2 Class-specific MS Bulk IN Endpoint Descriptor */
364static const struct usb_ms_endpoint_descriptor_1 ms_in_desc = {
365 .bLength = USB_DT_MS_ENDPOINT_SIZE(1),
366 .bDescriptorType = USB_DT_CS_ENDPOINT,
367 .bDescriptorSubtype = USB_MS_GENERAL,
368 .bNumEmbMIDIJack = 1,
369 .baAssocJackID = {
370 [0] = JACK_OUT_EMB,
371 }
372};
373
374static const struct usb_descriptor_header *gmidi_function [] = {
375 (struct usb_descriptor_header *)&ac_interface_desc,
376 (struct usb_descriptor_header *)&ac_header_desc,
377 (struct usb_descriptor_header *)&ms_interface_desc,
378
379 (struct usb_descriptor_header *)&ms_header_desc,
380 (struct usb_descriptor_header *)&jack_in_emb_desc,
381 (struct usb_descriptor_header *)&jack_in_ext_desc,
382 (struct usb_descriptor_header *)&jack_out_emb_desc,
383 (struct usb_descriptor_header *)&jack_out_ext_desc,
384 /* If you add more jacks, update ms_header_desc.wTotalLength */
385
386 (struct usb_descriptor_header *)&bulk_out_desc,
387 (struct usb_descriptor_header *)&ms_out_desc,
388 (struct usb_descriptor_header *)&bulk_in_desc,
389 (struct usb_descriptor_header *)&ms_in_desc,
390 NULL,
391};
392
393static char manufacturer[50];
394static char product_desc[40] = "MIDI Gadget";
395static char serial_number[20];
396
397/* static strings, in UTF-8 */
398static struct usb_string strings [] = {
399 { STRING_MANUFACTURER, manufacturer, },
400 { STRING_PRODUCT, product_desc, },
401 { STRING_SERIAL, serial_number, },
402 { STRING_MIDI_GADGET, longname, },
403 { } /* end of list */
404};
405
406static struct usb_gadget_strings stringtab = {
407 .language = 0x0409, /* en-us */
408 .strings = strings,
409};
410
411static int config_buf(struct usb_gadget *gadget,
412 u8 *buf, u8 type, unsigned index)
413{
414 int len;
415
416 /* only one configuration */
417 if (index != 0) {
418 return -EINVAL;
419 }
420 len = usb_gadget_config_buf(&config_desc,
421 buf, USB_BUFSIZ, gmidi_function);
422 if (len < 0) {
423 return len;
424 }
425 ((struct usb_config_descriptor *)buf)->bDescriptorType = type;
426 return len;
427}
428
429static struct usb_request* alloc_ep_req(struct usb_ep *ep, unsigned length)
430{
431 struct usb_request *req;
432
433 req = usb_ep_alloc_request(ep, GFP_ATOMIC);
434 if (req) {
435 req->length = length;
436 req->buf = kmalloc(length, GFP_ATOMIC);
437 if (!req->buf) {
438 usb_ep_free_request(ep, req);
439 req = NULL;
440 }
441 }
442 return req;
443}
444
445static void free_ep_req(struct usb_ep *ep, struct usb_request *req)
446{
447 kfree(req->buf);
448 usb_ep_free_request(ep, req);
449}
450
451static const uint8_t gmidi_cin_length[] = {
452 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1
453};
454
455/*
456 * Receives a chunk of MIDI data.
457 */
458static void gmidi_read_data(struct usb_ep *ep, int cable,
459 uint8_t* data, int length)
460{
461 struct gmidi_device *dev = ep->driver_data;
462 /* cable is ignored, because for now we only have one. */
463
464 if (!dev->out_substream) {
465 /* Nobody is listening - throw it on the floor. */
466 return;
467 }
468 if (!test_bit(dev->out_substream->number, &dev->out_triggered)) {
469 return;
470 }
471 snd_rawmidi_receive(dev->out_substream, data, length);
472}
473
474static void gmidi_handle_out_data(struct usb_ep *ep, struct usb_request *req)
475{
476 unsigned i;
477 u8 *buf = req->buf;
478
479 for (i = 0; i + 3 < req->actual; i += 4) {
480 if (buf[i] != 0) {
481 int cable = buf[i] >> 4;
482 int length = gmidi_cin_length[buf[i] & 0x0f];
483 gmidi_read_data(ep, cable, &buf[i + 1], length);
484 }
485 }
486}
487
488static void gmidi_complete(struct usb_ep *ep, struct usb_request *req)
489{
490 struct gmidi_device *dev = ep->driver_data;
491 int status = req->status;
492
493 switch (status) {
494 case 0: /* normal completion */
495 if (ep == dev->out_ep) {
496 /* we received stuff.
497 req is queued again, below */
498 gmidi_handle_out_data(ep, req);
499 } else if (ep == dev->in_ep) {
500 /* our transmit completed.
501 see if there's more to go.
502 gmidi_transmit eats req, don't queue it again. */
503 gmidi_transmit(dev, req);
504 return;
505 }
506 break;
507
508 /* this endpoint is normally active while we're configured */
509 case -ECONNABORTED: /* hardware forced ep reset */
510 case -ECONNRESET: /* request dequeued */
511 case -ESHUTDOWN: /* disconnect from host */
512 VDBG(dev, "%s gone (%d), %d/%d\n", ep->name, status,
513 req->actual, req->length);
514 if (ep == dev->out_ep) {
515 gmidi_handle_out_data(ep, req);
516 }
517 free_ep_req(ep, req);
518 return;
519
520 case -EOVERFLOW: /* buffer overrun on read means that
521 * we didn't provide a big enough
522 * buffer.
523 */
524 default:
525 DBG(dev, "%s complete --> %d, %d/%d\n", ep->name,
526 status, req->actual, req->length);
527 break;
528 case -EREMOTEIO: /* short read */
529 break;
530 }
531
532 status = usb_ep_queue(ep, req, GFP_ATOMIC);
533 if (status) {
534 ERROR(dev, "kill %s: resubmit %d bytes --> %d\n",
535 ep->name, req->length, status);
536 usb_ep_set_halt(ep);
537 /* FIXME recover later ... somehow */
538 }
539}
540
541static int set_gmidi_config(struct gmidi_device *dev, gfp_t gfp_flags)
542{
543 int err = 0;
544 struct usb_request *req;
545 struct usb_ep* ep;
546 unsigned i;
547
548 err = usb_ep_enable(dev->in_ep, &bulk_in_desc);
549 if (err) {
550 ERROR(dev, "can't start %s: %d\n", dev->in_ep->name, err);
551 goto fail;
552 }
553 dev->in_ep->driver_data = dev;
554
555 err = usb_ep_enable(dev->out_ep, &bulk_out_desc);
556 if (err) {
557 ERROR(dev, "can't start %s: %d\n", dev->out_ep->name, err);
558 goto fail;
559 }
560 dev->out_ep->driver_data = dev;
561
562 /* allocate a bunch of read buffers and queue them all at once. */
563 ep = dev->out_ep;
564 for (i = 0; i < qlen && err == 0; i++) {
565 req = alloc_ep_req(ep, buflen);
566 if (req) {
567 req->complete = gmidi_complete;
568 err = usb_ep_queue(ep, req, GFP_ATOMIC);
569 if (err) {
570 DBG(dev, "%s queue req: %d\n", ep->name, err);
571 }
572 } else {
573 err = -ENOMEM;
574 }
575 }
576fail:
577 /* caller is responsible for cleanup on error */
578 return err;
579}
580
581
582static void gmidi_reset_config(struct gmidi_device *dev)
583{
584 if (dev->config == 0) {
585 return;
586 }
587
588 DBG(dev, "reset config\n");
589
590 /* just disable endpoints, forcing completion of pending i/o.
591 * all our completion handlers free their requests in this case.
592 */
593 usb_ep_disable(dev->in_ep);
594 usb_ep_disable(dev->out_ep);
595 dev->config = 0;
596}
597
598/* change our operational config. this code must agree with the code
599 * that returns config descriptors, and altsetting code.
600 *
601 * it's also responsible for power management interactions. some
602 * configurations might not work with our current power sources.
603 *
604 * note that some device controller hardware will constrain what this
605 * code can do, perhaps by disallowing more than one configuration or
606 * by limiting configuration choices (like the pxa2xx).
607 */
608static int
609gmidi_set_config(struct gmidi_device *dev, unsigned number, gfp_t gfp_flags)
610{
611 int result = 0;
612 struct usb_gadget *gadget = dev->gadget;
613
614#if 0
615 /* FIXME */
616 /* Hacking this bit out fixes a bug where on receipt of two
617 USB_REQ_SET_CONFIGURATION messages, we end up with no
618 buffered OUT requests waiting for data. This is clearly
619 hiding a bug elsewhere, because if the config didn't
620 change then we really shouldn't do anything. */
621 /* Having said that, when we do "change" from config 1
622 to config 1, we at least gmidi_reset_config() which
623 clears out any requests on endpoints, so it's not like
624 we leak or anything. */
625 if (number == dev->config) {
626 return 0;
627 }
628#endif
629
630 if (gadget_is_sa1100(gadget) && dev->config) {
631 /* tx fifo is full, but we can't clear it...*/
632 INFO(dev, "can't change configurations\n");
633 return -ESPIPE;
634 }
635 gmidi_reset_config(dev);
636
637 switch (number) {
638 case GMIDI_CONFIG:
639 result = set_gmidi_config(dev, gfp_flags);
640 break;
641 default:
642 result = -EINVAL;
643 /* FALL THROUGH */
644 case 0:
645 return result;
646 }
647
648 if (!result && (!dev->in_ep || !dev->out_ep)) {
649 result = -ENODEV;
650 }
651 if (result) {
652 gmidi_reset_config(dev);
653 } else {
654 char *speed;
655
656 switch (gadget->speed) {
657 case USB_SPEED_LOW: speed = "low"; break;
658 case USB_SPEED_FULL: speed = "full"; break;
659 case USB_SPEED_HIGH: speed = "high"; break;
660 default: speed = "?"; break;
661 }
662
663 dev->config = number;
664 INFO(dev, "%s speed\n", speed);
665 }
666 return result;
667}
668
669
670static void gmidi_setup_complete(struct usb_ep *ep, struct usb_request *req)
671{
672 if (req->status || req->actual != req->length) {
673 DBG((struct gmidi_device *) ep->driver_data,
674 "setup complete --> %d, %d/%d\n",
675 req->status, req->actual, req->length);
676 }
677}
678
679/*
680 * The setup() callback implements all the ep0 functionality that's
681 * not handled lower down, in hardware or the hardware driver (like
682 * device and endpoint feature flags, and their status). It's all
683 * housekeeping for the gadget function we're implementing. Most of
684 * the work is in config-specific setup.
685 */
686static int gmidi_setup(struct usb_gadget *gadget,
687 const struct usb_ctrlrequest *ctrl)
688{
689 struct gmidi_device *dev = get_gadget_data(gadget);
690 struct usb_request *req = dev->req;
691 int value = -EOPNOTSUPP;
692 u16 w_index = le16_to_cpu(ctrl->wIndex);
693 u16 w_value = le16_to_cpu(ctrl->wValue);
694 u16 w_length = le16_to_cpu(ctrl->wLength);
695
696 /* usually this stores reply data in the pre-allocated ep0 buffer,
697 * but config change events will reconfigure hardware.
698 */
699 req->zero = 0;
700 switch (ctrl->bRequest) {
701
702 case USB_REQ_GET_DESCRIPTOR:
703 if (ctrl->bRequestType != USB_DIR_IN) {
704 goto unknown;
705 }
706 switch (w_value >> 8) {
707
708 case USB_DT_DEVICE:
709 value = min(w_length, (u16) sizeof(device_desc));
710 memcpy(req->buf, &device_desc, value);
711 break;
712 case USB_DT_CONFIG:
713 value = config_buf(gadget, req->buf,
714 w_value >> 8,
715 w_value & 0xff);
716 if (value >= 0) {
717 value = min(w_length, (u16)value);
718 }
719 break;
720
721 case USB_DT_STRING:
722 /* wIndex == language code.
723 * this driver only handles one language, you can
724 * add string tables for other languages, using
725 * any UTF-8 characters
726 */
727 value = usb_gadget_get_string(&stringtab,
728 w_value & 0xff, req->buf);
729 if (value >= 0) {
730 value = min(w_length, (u16)value);
731 }
732 break;
733 }
734 break;
735
736 /* currently two configs, two speeds */
737 case USB_REQ_SET_CONFIGURATION:
738 if (ctrl->bRequestType != 0) {
739 goto unknown;
740 }
741 if (gadget->a_hnp_support) {
742 DBG(dev, "HNP available\n");
743 } else if (gadget->a_alt_hnp_support) {
744 DBG(dev, "HNP needs a different root port\n");
745 } else {
746 VDBG(dev, "HNP inactive\n");
747 }
748 spin_lock(&dev->lock);
749 value = gmidi_set_config(dev, w_value, GFP_ATOMIC);
750 spin_unlock(&dev->lock);
751 break;
752 case USB_REQ_GET_CONFIGURATION:
753 if (ctrl->bRequestType != USB_DIR_IN) {
754 goto unknown;
755 }
756 *(u8 *)req->buf = dev->config;
757 value = min(w_length, (u16)1);
758 break;
759
760 /* until we add altsetting support, or other interfaces,
761 * only 0/0 are possible. pxa2xx only supports 0/0 (poorly)
762 * and already killed pending endpoint I/O.
763 */
764 case USB_REQ_SET_INTERFACE:
765 if (ctrl->bRequestType != USB_RECIP_INTERFACE) {
766 goto unknown;
767 }
768 spin_lock(&dev->lock);
769 if (dev->config && w_index < GMIDI_NUM_INTERFACES
770 && w_value == 0)
771 {
772 u8 config = dev->config;
773
774 /* resets interface configuration, forgets about
775 * previous transaction state (queued bufs, etc)
776 * and re-inits endpoint state (toggle etc)
777 * no response queued, just zero status == success.
778 * if we had more than one interface we couldn't
779 * use this "reset the config" shortcut.
780 */
781 gmidi_reset_config(dev);
782 gmidi_set_config(dev, config, GFP_ATOMIC);
783 value = 0;
784 }
785 spin_unlock(&dev->lock);
786 break;
787 case USB_REQ_GET_INTERFACE:
788 if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE)) {
789 goto unknown;
790 }
791 if (!dev->config) {
792 break;
793 }
794 if (w_index >= GMIDI_NUM_INTERFACES) {
795 value = -EDOM;
796 break;
797 }
798 *(u8 *)req->buf = 0;
799 value = min(w_length, (u16)1);
800 break;
801
802 default:
803unknown:
804 VDBG(dev, "unknown control req%02x.%02x v%04x i%04x l%d\n",
805 ctrl->bRequestType, ctrl->bRequest,
806 w_value, w_index, w_length);
807 }
808
809 /* respond with data transfer before status phase? */
810 if (value >= 0) {
811 req->length = value;
812 req->zero = value < w_length;
813 value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC);
814 if (value < 0) {
815 DBG(dev, "ep_queue --> %d\n", value);
816 req->status = 0;
817 gmidi_setup_complete(gadget->ep0, req);
818 }
819 }
820
821 /* device either stalls (value < 0) or reports success */
822 return value;
823}
824
825static void gmidi_disconnect(struct usb_gadget *gadget)
826{
827 struct gmidi_device *dev = get_gadget_data(gadget);
828 unsigned long flags;
829
830 spin_lock_irqsave(&dev->lock, flags);
831 gmidi_reset_config(dev);
832
833 /* a more significant application might have some non-usb
834 * activities to quiesce here, saving resources like power
835 * or pushing the notification up a network stack.
836 */
837 spin_unlock_irqrestore(&dev->lock, flags);
838
839 /* next we may get setup() calls to enumerate new connections;
840 * or an unbind() during shutdown (including removing module).
841 */
842}
843
844static void /* __init_or_exit */ gmidi_unbind(struct usb_gadget *gadget)
845{
846 struct gmidi_device *dev = get_gadget_data(gadget);
847 struct snd_card* card;
848
849 DBG(dev, "unbind\n");
850
851 card = dev->card;
852 dev->card = NULL;
853 if (card) {
854 snd_card_free(card);
855 }
856
857 /* we've already been disconnected ... no i/o is active */
858 if (dev->req) {
859 dev->req->length = USB_BUFSIZ;
860 free_ep_req(gadget->ep0, dev->req);
861 }
862 kfree(dev);
863 set_gadget_data(gadget, NULL);
864}
865
866static int gmidi_snd_free(struct snd_device *device)
867{
868 return 0;
869}
870
871static void gmidi_transmit_packet(struct usb_request* req, uint8_t p0,
872 uint8_t p1, uint8_t p2, uint8_t p3)
873{
874 unsigned length = req->length;
875
876 uint8_t* buf = (uint8_t*)req->buf + length;
877 buf[0] = p0;
878 buf[1] = p1;
879 buf[2] = p2;
880 buf[3] = p3;
881 req->length = length + 4;
882}
883
884/*
885 * Converts MIDI commands to USB MIDI packets.
886 */
887static void gmidi_transmit_byte(struct usb_request* req,
888 struct gmidi_in_port* port, uint8_t b)
889{
890 uint8_t p0 = port->cable;
891
892 if (b >= 0xf8) {
893 gmidi_transmit_packet(req, p0 | 0x0f, b, 0, 0);
894 } else if (b >= 0xf0) {
895 switch (b) {
896 case 0xf0:
897 port->data[0] = b;
898 port->state = STATE_SYSEX_1;
899 break;
900 case 0xf1:
901 case 0xf3:
902 port->data[0] = b;
903 port->state = STATE_1PARAM;
904 break;
905 case 0xf2:
906 port->data[0] = b;
907 port->state = STATE_2PARAM_1;
908 break;
909 case 0xf4:
910 case 0xf5:
911 port->state = STATE_UNKNOWN;
912 break;
913 case 0xf6:
914 gmidi_transmit_packet(req, p0 | 0x05, 0xf6, 0, 0);
915 port->state = STATE_UNKNOWN;
916 break;
917 case 0xf7:
918 switch (port->state) {
919 case STATE_SYSEX_0:
920 gmidi_transmit_packet(req,
921 p0 | 0x05, 0xf7, 0, 0);
922 break;
923 case STATE_SYSEX_1:
924 gmidi_transmit_packet(req,
925 p0 | 0x06, port->data[0], 0xf7, 0);
926 break;
927 case STATE_SYSEX_2:
928 gmidi_transmit_packet(req,
929 p0 | 0x07, port->data[0],
930 port->data[1], 0xf7);
931 break;
932 }
933 port->state = STATE_UNKNOWN;
934 break;
935 }
936 } else if (b >= 0x80) {
937 port->data[0] = b;
938 if (b >= 0xc0 && b <= 0xdf)
939 port->state = STATE_1PARAM;
940 else
941 port->state = STATE_2PARAM_1;
942 } else { /* b < 0x80 */
943 switch (port->state) {
944 case STATE_1PARAM:
945 if (port->data[0] < 0xf0) {
946 p0 |= port->data[0] >> 4;
947 } else {
948 p0 |= 0x02;
949 port->state = STATE_UNKNOWN;
950 }
951 gmidi_transmit_packet(req, p0, port->data[0], b, 0);
952 break;
953 case STATE_2PARAM_1:
954 port->data[1] = b;
955 port->state = STATE_2PARAM_2;
956 break;
957 case STATE_2PARAM_2:
958 if (port->data[0] < 0xf0) {
959 p0 |= port->data[0] >> 4;
960 port->state = STATE_2PARAM_1;
961 } else {
962 p0 |= 0x03;
963 port->state = STATE_UNKNOWN;
964 }
965 gmidi_transmit_packet(req,
966 p0, port->data[0], port->data[1], b);
967 break;
968 case STATE_SYSEX_0:
969 port->data[0] = b;
970 port->state = STATE_SYSEX_1;
971 break;
972 case STATE_SYSEX_1:
973 port->data[1] = b;
974 port->state = STATE_SYSEX_2;
975 break;
976 case STATE_SYSEX_2:
977 gmidi_transmit_packet(req,
978 p0 | 0x04, port->data[0], port->data[1], b);
979 port->state = STATE_SYSEX_0;
980 break;
981 }
982 }
983}
984
985static void gmidi_transmit(struct gmidi_device* dev, struct usb_request* req)
986{
987 struct usb_ep* ep = dev->in_ep;
988 struct gmidi_in_port* port = &dev->in_port;
989
990 if (!ep) {
991 return;
992 }
993 if (!req) {
994 req = alloc_ep_req(ep, buflen);
995 }
996 if (!req) {
997 ERROR(dev, "gmidi_transmit: alloc_ep_request failed\n");
998 return;
999 }
1000 req->length = 0;
1001 req->complete = gmidi_complete;
1002
1003 if (port->active) {
1004 while (req->length + 3 < buflen) {
1005 uint8_t b;
1006 if (snd_rawmidi_transmit(dev->in_substream, &b, 1)
1007 != 1)
1008 {
1009 port->active = 0;
1010 break;
1011 }
1012 gmidi_transmit_byte(req, port, b);
1013 }
1014 }
1015 if (req->length > 0) {
1016 usb_ep_queue(ep, req, GFP_ATOMIC);
1017 } else {
1018 free_ep_req(ep, req);
1019 }
1020}
1021
1022static void gmidi_in_tasklet(unsigned long data)
1023{
1024 struct gmidi_device* dev = (struct gmidi_device*)data;
1025
1026 gmidi_transmit(dev, NULL);
1027}
1028
1029static int gmidi_in_open(struct snd_rawmidi_substream *substream)
1030{
1031 struct gmidi_device* dev = substream->rmidi->private_data;
1032
1033 VDBG(dev, "gmidi_in_open\n");
1034 dev->in_substream = substream;
1035 dev->in_port.state = STATE_UNKNOWN;
1036 return 0;
1037}
1038
1039static int gmidi_in_close(struct snd_rawmidi_substream *substream)
1040{
1041 VDBG(dev, "gmidi_in_close\n");
1042 return 0;
1043}
1044
1045static void gmidi_in_trigger(struct snd_rawmidi_substream *substream, int up)
1046{
1047 struct gmidi_device* dev = substream->rmidi->private_data;
1048
1049 VDBG(dev, "gmidi_in_trigger %d\n", up);
1050 dev->in_port.active = up;
1051 if (up) {
1052 tasklet_hi_schedule(&dev->tasklet);
1053 }
1054}
1055
1056static int gmidi_out_open(struct snd_rawmidi_substream *substream)
1057{
1058 struct gmidi_device* dev = substream->rmidi->private_data;
1059
1060 VDBG(dev, "gmidi_out_open\n");
1061 dev->out_substream = substream;
1062 return 0;
1063}
1064
1065static int gmidi_out_close(struct snd_rawmidi_substream *substream)
1066{
1067 VDBG(dev, "gmidi_out_close\n");
1068 return 0;
1069}
1070
1071static void gmidi_out_trigger(struct snd_rawmidi_substream *substream, int up)
1072{
1073 struct gmidi_device* dev = substream->rmidi->private_data;
1074
1075 VDBG(dev, "gmidi_out_trigger %d\n", up);
1076 if (up) {
1077 set_bit(substream->number, &dev->out_triggered);
1078 } else {
1079 clear_bit(substream->number, &dev->out_triggered);
1080 }
1081}
1082
1083static struct snd_rawmidi_ops gmidi_in_ops = {
1084 .open = gmidi_in_open,
1085 .close = gmidi_in_close,
1086 .trigger = gmidi_in_trigger,
1087};
1088
1089static struct snd_rawmidi_ops gmidi_out_ops = {
1090 .open = gmidi_out_open,
1091 .close = gmidi_out_close,
1092 .trigger = gmidi_out_trigger
1093};
1094
1095/* register as a sound "card" */
1096static int gmidi_register_card(struct gmidi_device *dev)
1097{
1098 struct snd_card *card;
1099 struct snd_rawmidi *rmidi;
1100 int err;
1101 int out_ports = 1;
1102 int in_ports = 1;
1103 static struct snd_device_ops ops = {
1104 .dev_free = gmidi_snd_free,
1105 };
1106
1107 card = snd_card_new(index, id, THIS_MODULE, 0);
1108 if (!card) {
1109 ERROR(dev, "snd_card_new failed\n");
1110 err = -ENOMEM;
1111 goto fail;
1112 }
1113 dev->card = card;
1114
1115 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, dev, &ops);
1116 if (err < 0) {
1117 ERROR(dev, "snd_device_new failed: error %d\n", err);
1118 goto fail;
1119 }
1120
1121 strcpy(card->driver, longname);
1122 strcpy(card->longname, longname);
1123 strcpy(card->shortname, shortname);
1124
1125 /* Set up rawmidi */
1126 dev->in_port.dev = dev;
1127 dev->in_port.active = 0;
1128 snd_component_add(card, "MIDI");
1129 err = snd_rawmidi_new(card, "USB MIDI Gadget", 0,
1130 out_ports, in_ports, &rmidi);
1131 if (err < 0) {
1132 ERROR(dev, "snd_rawmidi_new failed: error %d\n", err);
1133 goto fail;
1134 }
1135 dev->rmidi = rmidi;
1136 strcpy(rmidi->name, card->shortname);
1137 rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
1138 SNDRV_RAWMIDI_INFO_INPUT |
1139 SNDRV_RAWMIDI_INFO_DUPLEX;
1140 rmidi->private_data = dev;
1141
1142 /* Yes, rawmidi OUTPUT = USB IN, and rawmidi INPUT = USB OUT.
1143 It's an upside-down world being a gadget. */
1144 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &gmidi_in_ops);
1145 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &gmidi_out_ops);
1146
1147 snd_card_set_dev(card, &dev->gadget->dev);
1148
1149 /* register it - we're ready to go */
1150 err = snd_card_register(card);
1151 if (err < 0) {
1152 ERROR(dev, "snd_card_register failed\n");
1153 goto fail;
1154 }
1155
1156 VDBG(dev, "gmidi_register_card finished ok\n");
1157 return 0;
1158
1159fail:
1160 if (dev->card) {
1161 snd_card_free(dev->card);
1162 dev->card = NULL;
1163 }
1164 return err;
1165}
1166
1167/*
1168 * Creates an output endpoint, and initializes output ports.
1169 */
1170static int __devinit gmidi_bind(struct usb_gadget *gadget)
1171{
1172 struct gmidi_device *dev;
1173 struct usb_ep *in_ep, *out_ep;
1174 int gcnum, err = 0;
1175
1176 /* support optional vendor/distro customization */
1177 if (idVendor) {
1178 if (!idProduct) {
1179 printk(KERN_ERR "idVendor needs idProduct!\n");
1180 return -ENODEV;
1181 }
1182 device_desc.idVendor = cpu_to_le16(idVendor);
1183 device_desc.idProduct = cpu_to_le16(idProduct);
1184 if (bcdDevice) {
1185 device_desc.bcdDevice = cpu_to_le16(bcdDevice);
1186 }
1187 }
1188 if (iManufacturer) {
1189 strlcpy(manufacturer, iManufacturer, sizeof(manufacturer));
1190 } else {
1191 snprintf(manufacturer, sizeof(manufacturer), "%s %s with %s",
1192 system_utsname.sysname, system_utsname.release,
1193 gadget->name);
1194 }
1195 if (iProduct) {
1196 strlcpy(product_desc, iProduct, sizeof(product_desc));
1197 }
1198 if (iSerialNumber) {
1199 device_desc.iSerialNumber = STRING_SERIAL,
1200 strlcpy(serial_number, iSerialNumber, sizeof(serial_number));
1201 }
1202
1203 /* Bulk-only drivers like this one SHOULD be able to
1204 * autoconfigure on any sane usb controller driver,
1205 * but there may also be important quirks to address.
1206 */
1207 usb_ep_autoconfig_reset(gadget);
1208 in_ep = usb_ep_autoconfig(gadget, &bulk_in_desc);
1209 if (!in_ep) {
1210autoconf_fail:
1211 printk(KERN_ERR "%s: can't autoconfigure on %s\n",
1212 shortname, gadget->name);
1213 return -ENODEV;
1214 }
1215 EP_IN_NAME = in_ep->name;
1216 in_ep->driver_data = in_ep; /* claim */
1217
1218 out_ep = usb_ep_autoconfig(gadget, &bulk_out_desc);
1219 if (!out_ep) {
1220 goto autoconf_fail;
1221 }
1222 EP_OUT_NAME = out_ep->name;
1223 out_ep->driver_data = out_ep; /* claim */
1224
1225 gcnum = usb_gadget_controller_number(gadget);
1226 if (gcnum >= 0) {
1227 device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum);
1228 } else {
1229 /* gmidi is so simple (no altsettings) that
1230 * it SHOULD NOT have problems with bulk-capable hardware.
1231 * so warn about unrecognized controllers, don't panic.
1232 */
1233 printk(KERN_WARNING "%s: controller '%s' not recognized\n",
1234 shortname, gadget->name);
1235 device_desc.bcdDevice = __constant_cpu_to_le16(0x9999);
1236 }
1237
1238
1239 /* ok, we made sense of the hardware ... */
1240 dev = kzalloc(sizeof(*dev), SLAB_KERNEL);
1241 if (!dev) {
1242 return -ENOMEM;
1243 }
1244 spin_lock_init(&dev->lock);
1245 dev->gadget = gadget;
1246 dev->in_ep = in_ep;
1247 dev->out_ep = out_ep;
1248 set_gadget_data(gadget, dev);
1249 tasklet_init(&dev->tasklet, gmidi_in_tasklet, (unsigned long)dev);
1250
1251 /* preallocate control response and buffer */
1252 dev->req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL);
1253 if (!dev->req) {
1254 err = -ENOMEM;
1255 goto fail;
1256 }
1257 dev->req->buf = usb_ep_alloc_buffer(gadget->ep0, USB_BUFSIZ,
1258 &dev->req->dma, GFP_KERNEL);
1259 if (!dev->req->buf) {
1260 err = -ENOMEM;
1261 goto fail;
1262 }
1263
1264 dev->req->complete = gmidi_setup_complete;
1265
1266 device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
1267
1268 gadget->ep0->driver_data = dev;
1269
1270 INFO(dev, "%s, version: " DRIVER_VERSION "\n", longname);
1271 INFO(dev, "using %s, OUT %s IN %s\n", gadget->name,
1272 EP_OUT_NAME, EP_IN_NAME);
1273
1274 /* register as an ALSA sound card */
1275 err = gmidi_register_card(dev);
1276 if (err < 0) {
1277 goto fail;
1278 }
1279
1280 VDBG(dev, "gmidi_bind finished ok\n");
1281 return 0;
1282
1283fail:
1284 gmidi_unbind(gadget);
1285 return err;
1286}
1287
1288
1289static void gmidi_suspend(struct usb_gadget *gadget)
1290{
1291 struct gmidi_device *dev = get_gadget_data(gadget);
1292
1293 if (gadget->speed == USB_SPEED_UNKNOWN) {
1294 return;
1295 }
1296
1297 DBG(dev, "suspend\n");
1298}
1299
1300static void gmidi_resume(struct usb_gadget *gadget)
1301{
1302 struct gmidi_device *dev = get_gadget_data(gadget);
1303
1304 DBG(dev, "resume\n");
1305}
1306
1307
1308static struct usb_gadget_driver gmidi_driver = {
1309 .speed = USB_SPEED_FULL,
1310 .function = (char *)longname,
1311 .bind = gmidi_bind,
1312 .unbind = __exit_p(gmidi_unbind),
1313
1314 .setup = gmidi_setup,
1315 .disconnect = gmidi_disconnect,
1316
1317 .suspend = gmidi_suspend,
1318 .resume = gmidi_resume,
1319
1320 .driver = {
1321 .name = (char *)shortname,
1322 .owner = THIS_MODULE,
1323 },
1324};
1325
1326static int __init gmidi_init(void)
1327{
1328 return usb_gadget_register_driver(&gmidi_driver);
1329}
1330module_init(gmidi_init);
1331
1332static void __exit gmidi_cleanup(void)
1333{
1334 usb_gadget_unregister_driver(&gmidi_driver);
1335}
1336module_exit(gmidi_cleanup);
1337
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index 3bdc5e3ba234..4655522a08d9 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -32,6 +32,7 @@
32#include <linux/compiler.h> 32#include <linux/compiler.h>
33#include <asm/uaccess.h> 33#include <asm/uaccess.h>
34#include <linux/slab.h> 34#include <linux/slab.h>
35#include <linux/poll.h>
35 36
36#include <linux/device.h> 37#include <linux/device.h>
37#include <linux/moduleparam.h> 38#include <linux/moduleparam.h>
@@ -222,7 +223,6 @@ static void put_ep (struct ep_data *data)
222 /* needs no more cleanup */ 223 /* needs no more cleanup */
223 BUG_ON (!list_empty (&data->epfiles)); 224 BUG_ON (!list_empty (&data->epfiles));
224 BUG_ON (waitqueue_active (&data->wait)); 225 BUG_ON (waitqueue_active (&data->wait));
225 BUG_ON (down_trylock (&data->lock) != 0);
226 kfree (data); 226 kfree (data);
227} 227}
228 228
@@ -477,6 +477,10 @@ static int
477ep_release (struct inode *inode, struct file *fd) 477ep_release (struct inode *inode, struct file *fd)
478{ 478{
479 struct ep_data *data = fd->private_data; 479 struct ep_data *data = fd->private_data;
480 int value;
481
482 if ((value = down_interruptible(&data->lock)) < 0)
483 return value;
480 484
481 /* clean up if this can be reopened */ 485 /* clean up if this can be reopened */
482 if (data->state != STATE_EP_UNBOUND) { 486 if (data->state != STATE_EP_UNBOUND) {
@@ -485,6 +489,7 @@ ep_release (struct inode *inode, struct file *fd)
485 data->hs_desc.bDescriptorType = 0; 489 data->hs_desc.bDescriptorType = 0;
486 usb_ep_disable(data->ep); 490 usb_ep_disable(data->ep);
487 } 491 }
492 up (&data->lock);
488 put_ep (data); 493 put_ep (data);
489 return 0; 494 return 0;
490} 495}
@@ -709,7 +714,7 @@ ep_aio_write(struct kiocb *iocb, const char __user *ubuf, size_t len, loff_t o)
709/*----------------------------------------------------------------------*/ 714/*----------------------------------------------------------------------*/
710 715
711/* used after endpoint configuration */ 716/* used after endpoint configuration */
712static struct file_operations ep_io_operations = { 717static const struct file_operations ep_io_operations = {
713 .owner = THIS_MODULE, 718 .owner = THIS_MODULE,
714 .llseek = no_llseek, 719 .llseek = no_llseek,
715 720
@@ -741,7 +746,7 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
741 struct ep_data *data = fd->private_data; 746 struct ep_data *data = fd->private_data;
742 struct usb_ep *ep; 747 struct usb_ep *ep;
743 u32 tag; 748 u32 tag;
744 int value; 749 int value, length = len;
745 750
746 if ((value = down_interruptible (&data->lock)) < 0) 751 if ((value = down_interruptible (&data->lock)) < 0)
747 return value; 752 return value;
@@ -792,7 +797,6 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
792 goto fail0; 797 goto fail0;
793 } 798 }
794 } 799 }
795 value = len;
796 800
797 spin_lock_irq (&data->dev->lock); 801 spin_lock_irq (&data->dev->lock);
798 if (data->dev->state == STATE_DEV_UNBOUND) { 802 if (data->dev->state == STATE_DEV_UNBOUND) {
@@ -822,8 +826,10 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
822 data->name); 826 data->name);
823 data->state = STATE_EP_DEFER_ENABLE; 827 data->state = STATE_EP_DEFER_ENABLE;
824 } 828 }
825 if (value == 0) 829 if (value == 0) {
826 fd->f_op = &ep_io_operations; 830 fd->f_op = &ep_io_operations;
831 value = length;
832 }
827gone: 833gone:
828 spin_unlock_irq (&data->dev->lock); 834 spin_unlock_irq (&data->dev->lock);
829 if (value < 0) { 835 if (value < 0) {
@@ -844,7 +850,7 @@ fail1:
844static int 850static int
845ep_open (struct inode *inode, struct file *fd) 851ep_open (struct inode *inode, struct file *fd)
846{ 852{
847 struct ep_data *data = inode->u.generic_ip; 853 struct ep_data *data = inode->i_private;
848 int value = -EBUSY; 854 int value = -EBUSY;
849 855
850 if (down_interruptible (&data->lock) != 0) 856 if (down_interruptible (&data->lock) != 0)
@@ -867,7 +873,7 @@ ep_open (struct inode *inode, struct file *fd)
867} 873}
868 874
869/* used before endpoint configuration */ 875/* used before endpoint configuration */
870static struct file_operations ep_config_operations = { 876static const struct file_operations ep_config_operations = {
871 .owner = THIS_MODULE, 877 .owner = THIS_MODULE,
872 .llseek = no_llseek, 878 .llseek = no_llseek,
873 879
@@ -1009,7 +1015,7 @@ ep0_read (struct file *fd, char __user *buf, size_t len, loff_t *ptr)
1009 else { 1015 else {
1010 len = min (len, (size_t)dev->req->actual); 1016 len = min (len, (size_t)dev->req->actual);
1011// FIXME don't call this with the spinlock held ... 1017// FIXME don't call this with the spinlock held ...
1012 if (copy_to_user (buf, &dev->req->buf, len)) 1018 if (copy_to_user (buf, dev->req->buf, len))
1013 retval = -EFAULT; 1019 retval = -EFAULT;
1014 clean_req (dev->gadget->ep0, dev->req); 1020 clean_req (dev->gadget->ep0, dev->req);
1015 /* NOTE userspace can't yet choose to stall */ 1021 /* NOTE userspace can't yet choose to stall */
@@ -1229,6 +1235,35 @@ dev_release (struct inode *inode, struct file *fd)
1229 return 0; 1235 return 0;
1230} 1236}
1231 1237
1238static unsigned int
1239ep0_poll (struct file *fd, poll_table *wait)
1240{
1241 struct dev_data *dev = fd->private_data;
1242 int mask = 0;
1243
1244 poll_wait(fd, &dev->wait, wait);
1245
1246 spin_lock_irq (&dev->lock);
1247
1248 /* report fd mode change before acting on it */
1249 if (dev->setup_abort) {
1250 dev->setup_abort = 0;
1251 mask = POLLHUP;
1252 goto out;
1253 }
1254
1255 if (dev->state == STATE_SETUP) {
1256 if (dev->setup_in || dev->setup_can_stall)
1257 mask = POLLOUT;
1258 } else {
1259 if (dev->ev_next != 0)
1260 mask = POLLIN;
1261 }
1262out:
1263 spin_unlock_irq(&dev->lock);
1264 return mask;
1265}
1266
1232static int dev_ioctl (struct inode *inode, struct file *fd, 1267static int dev_ioctl (struct inode *inode, struct file *fd,
1233 unsigned code, unsigned long value) 1268 unsigned code, unsigned long value)
1234{ 1269{
@@ -1241,14 +1276,14 @@ static int dev_ioctl (struct inode *inode, struct file *fd,
1241} 1276}
1242 1277
1243/* used after device configuration */ 1278/* used after device configuration */
1244static struct file_operations ep0_io_operations = { 1279static const struct file_operations ep0_io_operations = {
1245 .owner = THIS_MODULE, 1280 .owner = THIS_MODULE,
1246 .llseek = no_llseek, 1281 .llseek = no_llseek,
1247 1282
1248 .read = ep0_read, 1283 .read = ep0_read,
1249 .write = ep0_write, 1284 .write = ep0_write,
1250 .fasync = ep0_fasync, 1285 .fasync = ep0_fasync,
1251 // .poll = ep0_poll, 1286 .poll = ep0_poll,
1252 .ioctl = dev_ioctl, 1287 .ioctl = dev_ioctl,
1253 .release = dev_release, 1288 .release = dev_release,
1254}; 1289};
@@ -1696,16 +1731,17 @@ gadgetfs_disconnect (struct usb_gadget *gadget)
1696{ 1731{
1697 struct dev_data *dev = get_gadget_data (gadget); 1732 struct dev_data *dev = get_gadget_data (gadget);
1698 1733
1734 spin_lock (&dev->lock);
1699 if (dev->state == STATE_UNCONNECTED) { 1735 if (dev->state == STATE_UNCONNECTED) {
1700 DBG (dev, "already unconnected\n"); 1736 DBG (dev, "already unconnected\n");
1701 return; 1737 goto exit;
1702 } 1738 }
1703 dev->state = STATE_UNCONNECTED; 1739 dev->state = STATE_UNCONNECTED;
1704 1740
1705 INFO (dev, "disconnected\n"); 1741 INFO (dev, "disconnected\n");
1706 spin_lock (&dev->lock);
1707 next_event (dev, GADGETFS_DISCONNECT); 1742 next_event (dev, GADGETFS_DISCONNECT);
1708 ep0_readable (dev); 1743 ep0_readable (dev);
1744exit:
1709 spin_unlock (&dev->lock); 1745 spin_unlock (&dev->lock);
1710} 1746}
1711 1747
@@ -1909,7 +1945,7 @@ fail:
1909static int 1945static int
1910dev_open (struct inode *inode, struct file *fd) 1946dev_open (struct inode *inode, struct file *fd)
1911{ 1947{
1912 struct dev_data *dev = inode->u.generic_ip; 1948 struct dev_data *dev = inode->i_private;
1913 int value = -EBUSY; 1949 int value = -EBUSY;
1914 1950
1915 if (dev->state == STATE_DEV_DISABLED) { 1951 if (dev->state == STATE_DEV_DISABLED) {
@@ -1922,7 +1958,7 @@ dev_open (struct inode *inode, struct file *fd)
1922 return value; 1958 return value;
1923} 1959}
1924 1960
1925static struct file_operations dev_init_operations = { 1961static const struct file_operations dev_init_operations = {
1926 .owner = THIS_MODULE, 1962 .owner = THIS_MODULE,
1927 .llseek = no_llseek, 1963 .llseek = no_llseek,
1928 1964
@@ -1966,11 +2002,10 @@ gadgetfs_make_inode (struct super_block *sb,
1966 inode->i_mode = mode; 2002 inode->i_mode = mode;
1967 inode->i_uid = default_uid; 2003 inode->i_uid = default_uid;
1968 inode->i_gid = default_gid; 2004 inode->i_gid = default_gid;
1969 inode->i_blksize = PAGE_CACHE_SIZE;
1970 inode->i_blocks = 0; 2005 inode->i_blocks = 0;
1971 inode->i_atime = inode->i_mtime = inode->i_ctime 2006 inode->i_atime = inode->i_mtime = inode->i_ctime
1972 = CURRENT_TIME; 2007 = CURRENT_TIME;
1973 inode->u.generic_ip = data; 2008 inode->i_private = data;
1974 inode->i_fop = fops; 2009 inode->i_fop = fops;
1975 } 2010 }
1976 return inode; 2011 return inode;
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index 09243239d948..3bda37f9a35f 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -2,7 +2,7 @@
2 * Driver for the PLX NET2280 USB device controller. 2 * Driver for the PLX NET2280 USB device controller.
3 * Specs and errata are available from <http://www.plxtech.com>. 3 * Specs and errata are available from <http://www.plxtech.com>.
4 * 4 *
5 * PLX Technology Inc. (formerly NetChip Technology) supported the 5 * PLX Technology Inc. (formerly NetChip Technology) supported the
6 * development of this driver. 6 * development of this driver.
7 * 7 *
8 * 8 *
@@ -26,7 +26,8 @@
26 * Copyright (C) 2003 David Brownell 26 * Copyright (C) 2003 David Brownell
27 * Copyright (C) 2003-2005 PLX Technology, Inc. 27 * Copyright (C) 2003-2005 PLX Technology, Inc.
28 * 28 *
29 * Modified Seth Levy 2005 PLX Technology, Inc. to provide compatibility with 2282 chip 29 * Modified Seth Levy 2005 PLX Technology, Inc. to provide compatibility
30 * with 2282 chip
30 * 31 *
31 * This program is free software; you can redistribute it and/or modify 32 * This program is free software; you can redistribute it and/or modify
32 * it under the terms of the GNU General Public License as published by 33 * it under the terms of the GNU General Public License as published by
@@ -85,7 +86,7 @@ static const char driver_name [] = "net2280";
85static const char driver_desc [] = DRIVER_DESC; 86static const char driver_desc [] = DRIVER_DESC;
86 87
87static const char ep0name [] = "ep0"; 88static const char ep0name [] = "ep0";
88static const char *ep_name [] = { 89static const char *const ep_name [] = {
89 ep0name, 90 ep0name,
90 "ep-a", "ep-b", "ep-c", "ep-d", 91 "ep-a", "ep-b", "ep-c", "ep-d",
91 "ep-e", "ep-f", 92 "ep-e", "ep-f",
@@ -225,7 +226,9 @@ net2280_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
225 if (!ep->is_in) 226 if (!ep->is_in)
226 writel ((1 << SET_NAK_OUT_PACKETS), &ep->regs->ep_rsp); 227 writel ((1 << SET_NAK_OUT_PACKETS), &ep->regs->ep_rsp);
227 else if (dev->pdev->device != 0x2280) { 228 else if (dev->pdev->device != 0x2280) {
228 /* Added for 2282, Don't use nak packets on an in endpoint, this was ignored on 2280 */ 229 /* Added for 2282, Don't use nak packets on an in endpoint,
230 * this was ignored on 2280
231 */
229 writel ((1 << CLEAR_NAK_OUT_PACKETS) 232 writel ((1 << CLEAR_NAK_OUT_PACKETS)
230 | (1 << CLEAR_NAK_OUT_PACKETS_MODE), &ep->regs->ep_rsp); 233 | (1 << CLEAR_NAK_OUT_PACKETS_MODE), &ep->regs->ep_rsp);
231 } 234 }
@@ -288,7 +291,7 @@ static int handshake (u32 __iomem *ptr, u32 mask, u32 done, int usec)
288 return -ETIMEDOUT; 291 return -ETIMEDOUT;
289} 292}
290 293
291static struct usb_ep_ops net2280_ep_ops; 294static const struct usb_ep_ops net2280_ep_ops;
292 295
293static void ep_reset (struct net2280_regs __iomem *regs, struct net2280_ep *ep) 296static void ep_reset (struct net2280_regs __iomem *regs, struct net2280_ep *ep)
294{ 297{
@@ -449,34 +452,15 @@ net2280_free_request (struct usb_ep *_ep, struct usb_request *_req)
449 452
450/*-------------------------------------------------------------------------*/ 453/*-------------------------------------------------------------------------*/
451 454
452#undef USE_KMALLOC 455/*
453 456 * dma-coherent memory allocation (for dma-capable endpoints)
454/* many common platforms have dma-coherent caches, which means that it's
455 * safe to use kmalloc() memory for all i/o buffers without using any
456 * cache flushing calls. (unless you're trying to share cache lines
457 * between dma and non-dma activities, which is a slow idea in any case.)
458 * 457 *
459 * other platforms need more care, with 2.5 having a moderately general 458 * NOTE: the dma_*_coherent() API calls suck. Most implementations are
460 * solution (which falls down for allocations smaller than one page) 459 * (a) page-oriented, so small buffers lose big; and (b) asymmetric with
461 * that improves significantly on the 2.4 PCI allocators by removing 460 * respect to calls with irqs disabled: alloc is safe, free is not.
462 * the restriction that memory never be freed in_interrupt(). 461 * We currently work around (b), but not (a).
463 */ 462 */
464#if defined(CONFIG_X86)
465#define USE_KMALLOC
466
467#elif defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
468#define USE_KMALLOC
469 463
470#elif defined(CONFIG_MIPS) && !defined(CONFIG_DMA_NONCOHERENT)
471#define USE_KMALLOC
472
473/* FIXME there are other cases, including an x86-64 one ... */
474#endif
475
476/* allocating buffers this way eliminates dma mapping overhead, which
477 * on some platforms will mean eliminating a per-io buffer copy. with
478 * some kinds of system caches, further tweaks may still be needed.
479 */
480static void * 464static void *
481net2280_alloc_buffer ( 465net2280_alloc_buffer (
482 struct usb_ep *_ep, 466 struct usb_ep *_ep,
@@ -493,43 +477,71 @@ net2280_alloc_buffer (
493 return NULL; 477 return NULL;
494 *dma = DMA_ADDR_INVALID; 478 *dma = DMA_ADDR_INVALID;
495 479
496#if defined(USE_KMALLOC) 480 if (ep->dma)
497 retval = kmalloc(bytes, gfp_flags);
498 if (retval)
499 *dma = virt_to_phys(retval);
500#else
501 if (ep->dma) {
502 /* the main problem with this call is that it wastes memory
503 * on typical 1/N page allocations: it allocates 1-N pages.
504 */
505#warning Using dma_alloc_coherent even with buffers smaller than a page.
506 retval = dma_alloc_coherent(&ep->dev->pdev->dev, 481 retval = dma_alloc_coherent(&ep->dev->pdev->dev,
507 bytes, dma, gfp_flags); 482 bytes, dma, gfp_flags);
508 } else 483 else
509 retval = kmalloc(bytes, gfp_flags); 484 retval = kmalloc(bytes, gfp_flags);
510#endif
511 return retval; 485 return retval;
512} 486}
513 487
488static DEFINE_SPINLOCK(buflock);
489static LIST_HEAD(buffers);
490
491struct free_record {
492 struct list_head list;
493 struct device *dev;
494 unsigned bytes;
495 dma_addr_t dma;
496};
497
498static void do_free(unsigned long ignored)
499{
500 spin_lock_irq(&buflock);
501 while (!list_empty(&buffers)) {
502 struct free_record *buf;
503
504 buf = list_entry(buffers.next, struct free_record, list);
505 list_del(&buf->list);
506 spin_unlock_irq(&buflock);
507
508 dma_free_coherent(buf->dev, buf->bytes, buf, buf->dma);
509
510 spin_lock_irq(&buflock);
511 }
512 spin_unlock_irq(&buflock);
513}
514
515static DECLARE_TASKLET(deferred_free, do_free, 0);
516
514static void 517static void
515net2280_free_buffer ( 518net2280_free_buffer (
516 struct usb_ep *_ep, 519 struct usb_ep *_ep,
517 void *buf, 520 void *address,
518 dma_addr_t dma, 521 dma_addr_t dma,
519 unsigned bytes 522 unsigned bytes
520) { 523) {
521 /* free memory into the right allocator */ 524 /* free memory into the right allocator */
522#ifndef USE_KMALLOC
523 if (dma != DMA_ADDR_INVALID) { 525 if (dma != DMA_ADDR_INVALID) {
524 struct net2280_ep *ep; 526 struct net2280_ep *ep;
527 struct free_record *buf = address;
528 unsigned long flags;
525 529
526 ep = container_of(_ep, struct net2280_ep, ep); 530 ep = container_of(_ep, struct net2280_ep, ep);
527 if (!_ep) 531 if (!_ep)
528 return; 532 return;
529 dma_free_coherent(&ep->dev->pdev->dev, bytes, buf, dma); 533
534 ep = container_of (_ep, struct net2280_ep, ep);
535 buf->dev = &ep->dev->pdev->dev;
536 buf->bytes = bytes;
537 buf->dma = dma;
538
539 spin_lock_irqsave(&buflock, flags);
540 list_add_tail(&buf->list, &buffers);
541 tasklet_schedule(&deferred_free);
542 spin_unlock_irqrestore(&buflock, flags);
530 } else 543 } else
531#endif 544 kfree (address);
532 kfree (buf);
533} 545}
534 546
535/*-------------------------------------------------------------------------*/ 547/*-------------------------------------------------------------------------*/
@@ -737,7 +749,8 @@ fill_dma_desc (struct net2280_ep *ep, struct net2280_request *req, int valid)
737 */ 749 */
738 if (ep->is_in) 750 if (ep->is_in)
739 dmacount |= (1 << DMA_DIRECTION); 751 dmacount |= (1 << DMA_DIRECTION);
740 if ((!ep->is_in && (dmacount % ep->ep.maxpacket) != 0) || ep->dev->pdev->device != 0x2280) 752 if ((!ep->is_in && (dmacount % ep->ep.maxpacket) != 0)
753 || ep->dev->pdev->device != 0x2280)
741 dmacount |= (1 << END_OF_CHAIN); 754 dmacount |= (1 << END_OF_CHAIN);
742 755
743 req->valid = valid; 756 req->valid = valid;
@@ -812,7 +825,7 @@ static void start_dma (struct net2280_ep *ep, struct net2280_request *req)
812 825
813 /* previous OUT packet might have been short */ 826 /* previous OUT packet might have been short */
814 if (!ep->is_in && ((tmp = readl (&ep->regs->ep_stat)) 827 if (!ep->is_in && ((tmp = readl (&ep->regs->ep_stat))
815 & (1 << NAK_OUT_PACKETS)) != 0) { 828 & (1 << NAK_OUT_PACKETS)) != 0) {
816 writel ((1 << SHORT_PACKET_TRANSFERRED_INTERRUPT), 829 writel ((1 << SHORT_PACKET_TRANSFERRED_INTERRUPT),
817 &ep->regs->ep_stat); 830 &ep->regs->ep_stat);
818 831
@@ -1373,7 +1386,7 @@ net2280_fifo_flush (struct usb_ep *_ep)
1373 (void) readl (&ep->regs->ep_rsp); 1386 (void) readl (&ep->regs->ep_rsp);
1374} 1387}
1375 1388
1376static struct usb_ep_ops net2280_ep_ops = { 1389static const struct usb_ep_ops net2280_ep_ops = {
1377 .enable = net2280_enable, 1390 .enable = net2280_enable,
1378 .disable = net2280_disable, 1391 .disable = net2280_disable,
1379 1392
@@ -1631,7 +1644,7 @@ show_registers (struct device *_dev, struct device_attribute *attr, char *buf)
1631 } 1644 }
1632 1645
1633 /* Indexed Registers */ 1646 /* Indexed Registers */
1634 // none yet 1647 // none yet
1635 1648
1636 /* Statistics */ 1649 /* Statistics */
1637 t = scnprintf (next, size, "\nirqs: "); 1650 t = scnprintf (next, size, "\nirqs: ");
@@ -1691,11 +1704,11 @@ show_queues (struct device *_dev, struct device_attribute *attr, char *buf)
1691 ({ char *val; 1704 ({ char *val;
1692 switch (d->bmAttributes & 0x03) { 1705 switch (d->bmAttributes & 0x03) {
1693 case USB_ENDPOINT_XFER_BULK: 1706 case USB_ENDPOINT_XFER_BULK:
1694 val = "bulk"; break; 1707 val = "bulk"; break;
1695 case USB_ENDPOINT_XFER_INT: 1708 case USB_ENDPOINT_XFER_INT:
1696 val = "intr"; break; 1709 val = "intr"; break;
1697 default: 1710 default:
1698 val = "iso"; break; 1711 val = "iso"; break;
1699 }; val; }), 1712 }; val; }),
1700 le16_to_cpu (d->wMaxPacketSize) & 0x1fff, 1713 le16_to_cpu (d->wMaxPacketSize) & 0x1fff,
1701 ep->dma ? "dma" : "pio", ep->fifo_size 1714 ep->dma ? "dma" : "pio", ep->fifo_size
@@ -1808,8 +1821,8 @@ extern int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode);
1808 * net2280_set_fifo_mode - change allocation of fifo buffers 1821 * net2280_set_fifo_mode - change allocation of fifo buffers
1809 * @gadget: access to the net2280 device that will be updated 1822 * @gadget: access to the net2280 device that will be updated
1810 * @mode: 0 for default, four 1kB buffers (ep-a through ep-d); 1823 * @mode: 0 for default, four 1kB buffers (ep-a through ep-d);
1811 * 1 for two 2kB buffers (ep-a and ep-b only); 1824 * 1 for two 2kB buffers (ep-a and ep-b only);
1812 * 2 for one 2kB buffer (ep-a) and two 1kB ones (ep-b, ep-c). 1825 * 2 for one 2kB buffer (ep-a) and two 1kB ones (ep-b, ep-c).
1813 * 1826 *
1814 * returns zero on success, else negative errno. when this succeeds, 1827 * returns zero on success, else negative errno. when this succeeds,
1815 * the contents of gadget->ep_list may have changed. 1828 * the contents of gadget->ep_list may have changed.
@@ -2241,7 +2254,8 @@ static void handle_ep_small (struct net2280_ep *ep)
2241 req->td->dmacount = 0; 2254 req->td->dmacount = 0;
2242 t = readl (&ep->regs->ep_avail); 2255 t = readl (&ep->regs->ep_avail);
2243 dma_done (ep, req, count, 2256 dma_done (ep, req, count,
2244 (ep->out_overflow || t) ? -EOVERFLOW : 0); 2257 (ep->out_overflow || t)
2258 ? -EOVERFLOW : 0);
2245 } 2259 }
2246 2260
2247 /* also flush to prevent erratum 0106 trouble */ 2261 /* also flush to prevent erratum 0106 trouble */
@@ -2411,7 +2425,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
2411 , &ep->regs->ep_stat); 2425 , &ep->regs->ep_stat);
2412 u.raw [0] = readl (&dev->usb->setup0123); 2426 u.raw [0] = readl (&dev->usb->setup0123);
2413 u.raw [1] = readl (&dev->usb->setup4567); 2427 u.raw [1] = readl (&dev->usb->setup4567);
2414 2428
2415 cpu_to_le32s (&u.raw [0]); 2429 cpu_to_le32s (&u.raw [0]);
2416 cpu_to_le32s (&u.raw [1]); 2430 cpu_to_le32s (&u.raw [1]);
2417 2431
@@ -2578,14 +2592,16 @@ static void handle_stat1_irqs (struct net2280 *dev, u32 stat)
2578 2592
2579 /* VBUS disconnect is indicated by VBUS_PIN and VBUS_INTERRUPT set. 2593 /* VBUS disconnect is indicated by VBUS_PIN and VBUS_INTERRUPT set.
2580 * Root Port Reset is indicated by ROOT_PORT_RESET_INTERRRUPT set and 2594 * Root Port Reset is indicated by ROOT_PORT_RESET_INTERRRUPT set and
2581 * both HIGH_SPEED and FULL_SPEED clear (as ROOT_PORT_RESET_INTERRUPT 2595 * both HIGH_SPEED and FULL_SPEED clear (as ROOT_PORT_RESET_INTERRUPT
2582 * only indicates a change in the reset state). 2596 * only indicates a change in the reset state).
2583 */ 2597 */
2584 if (stat & tmp) { 2598 if (stat & tmp) {
2585 writel (tmp, &dev->regs->irqstat1); 2599 writel (tmp, &dev->regs->irqstat1);
2586 if ((((stat & (1 << ROOT_PORT_RESET_INTERRUPT)) && 2600 if ((((stat & (1 << ROOT_PORT_RESET_INTERRUPT))
2587 ((readl (&dev->usb->usbstat) & mask) == 0)) 2601 && ((readl (&dev->usb->usbstat) & mask)
2588 || ((readl (&dev->usb->usbctl) & (1 << VBUS_PIN)) == 0) 2602 == 0))
2603 || ((readl (&dev->usb->usbctl)
2604 & (1 << VBUS_PIN)) == 0)
2589 ) && ( dev->gadget.speed != USB_SPEED_UNKNOWN)) { 2605 ) && ( dev->gadget.speed != USB_SPEED_UNKNOWN)) {
2590 DEBUG (dev, "disconnect %s\n", 2606 DEBUG (dev, "disconnect %s\n",
2591 dev->driver->driver.name); 2607 dev->driver->driver.name);
@@ -2852,7 +2868,7 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id)
2852 2868
2853 /* now all the pci goodies ... */ 2869 /* now all the pci goodies ... */
2854 if (pci_enable_device (pdev) < 0) { 2870 if (pci_enable_device (pdev) < 0) {
2855 retval = -ENODEV; 2871 retval = -ENODEV;
2856 goto done; 2872 goto done;
2857 } 2873 }
2858 dev->enabled = 1; 2874 dev->enabled = 1;
@@ -2870,6 +2886,10 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id)
2870 } 2886 }
2871 dev->region = 1; 2887 dev->region = 1;
2872 2888
2889 /* FIXME provide firmware download interface to put
2890 * 8051 code into the chip, e.g. to turn on PCI PM.
2891 */
2892
2873 base = ioremap_nocache (resource, len); 2893 base = ioremap_nocache (resource, len);
2874 if (base == NULL) { 2894 if (base == NULL) {
2875 DEBUG (dev, "can't map memory\n"); 2895 DEBUG (dev, "can't map memory\n");
@@ -2984,16 +3004,16 @@ static void net2280_shutdown (struct pci_dev *pdev)
2984 3004
2985/*-------------------------------------------------------------------------*/ 3005/*-------------------------------------------------------------------------*/
2986 3006
2987static struct pci_device_id pci_ids [] = { { 3007static const struct pci_device_id pci_ids [] = { {
2988 .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe), 3008 .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
2989 .class_mask = ~0, 3009 .class_mask = ~0,
2990 .vendor = 0x17cc, 3010 .vendor = 0x17cc,
2991 .device = 0x2280, 3011 .device = 0x2280,
2992 .subvendor = PCI_ANY_ID, 3012 .subvendor = PCI_ANY_ID,
2993 .subdevice = PCI_ANY_ID, 3013 .subdevice = PCI_ANY_ID,
2994}, { 3014}, {
2995 .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe), 3015 .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
2996 .class_mask = ~0, 3016 .class_mask = ~0,
2997 .vendor = 0x17cc, 3017 .vendor = 0x17cc,
2998 .device = 0x2282, 3018 .device = 0x2282,
2999 .subvendor = PCI_ANY_ID, 3019 .subvendor = PCI_ANY_ID,
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index 2de9748ee673..0a64504c2545 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -40,7 +40,7 @@
40#include <linux/platform_device.h> 40#include <linux/platform_device.h>
41#include <linux/usb_ch9.h> 41#include <linux/usb_ch9.h>
42#include <linux/usb_gadget.h> 42#include <linux/usb_gadget.h>
43#include <linux/usb_otg.h> 43#include <linux/usb/otg.h>
44#include <linux/dma-mapping.h> 44#include <linux/dma-mapping.h>
45 45
46#include <asm/byteorder.h> 46#include <asm/byteorder.h>
@@ -2437,7 +2437,7 @@ static int proc_udc_open(struct inode *inode, struct file *file)
2437 return single_open(file, proc_udc_show, NULL); 2437 return single_open(file, proc_udc_show, NULL);
2438} 2438}
2439 2439
2440static struct file_operations proc_ops = { 2440static const struct file_operations proc_ops = {
2441 .open = proc_udc_open, 2441 .open = proc_udc_open,
2442 .read = seq_read, 2442 .read = seq_read,
2443 .llseek = seq_lseek, 2443 .llseek = seq_lseek,
diff --git a/drivers/usb/gadget/pxa2xx_udc.c b/drivers/usb/gadget/pxa2xx_udc.c
index fff027d30a09..f1adcf8b2023 100644
--- a/drivers/usb/gadget/pxa2xx_udc.c
+++ b/drivers/usb/gadget/pxa2xx_udc.c
@@ -150,6 +150,39 @@ MODULE_PARM_DESC (fifo_mode, "pxa2xx udc fifo mode");
150static void pxa2xx_ep_fifo_flush (struct usb_ep *ep); 150static void pxa2xx_ep_fifo_flush (struct usb_ep *ep);
151static void nuke (struct pxa2xx_ep *, int status); 151static void nuke (struct pxa2xx_ep *, int status);
152 152
153/* one GPIO should be used to detect VBUS from the host */
154static int is_vbus_present(void)
155{
156 struct pxa2xx_udc_mach_info *mach = the_controller->mach;
157
158 if (mach->gpio_vbus)
159 return pxa_gpio_get(mach->gpio_vbus);
160 if (mach->udc_is_connected)
161 return mach->udc_is_connected();
162 return 1;
163}
164
165/* one GPIO should control a D+ pullup, so host sees this device (or not) */
166static void pullup_off(void)
167{
168 struct pxa2xx_udc_mach_info *mach = the_controller->mach;
169
170 if (mach->gpio_pullup)
171 pxa_gpio_set(mach->gpio_pullup, 0);
172 else if (mach->udc_command)
173 mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
174}
175
176static void pullup_on(void)
177{
178 struct pxa2xx_udc_mach_info *mach = the_controller->mach;
179
180 if (mach->gpio_pullup)
181 pxa_gpio_set(mach->gpio_pullup, 1);
182 else if (mach->udc_command)
183 mach->udc_command(PXA2XX_UDC_CMD_CONNECT);
184}
185
153static void pio_irq_enable(int bEndpointAddress) 186static void pio_irq_enable(int bEndpointAddress)
154{ 187{
155 bEndpointAddress &= 0xf; 188 bEndpointAddress &= 0xf;
@@ -1721,6 +1754,16 @@ lubbock_vbus_irq(int irq, void *_dev, struct pt_regs *r)
1721 1754
1722#endif 1755#endif
1723 1756
1757static irqreturn_t
1758udc_vbus_irq(int irq, void *_dev, struct pt_regs *r)
1759{
1760 struct pxa2xx_udc *dev = _dev;
1761 int vbus = pxa_gpio_get(dev->mach->gpio_vbus);
1762
1763 pxa2xx_udc_vbus_session(&dev->gadget, vbus);
1764 return IRQ_HANDLED;
1765}
1766
1724 1767
1725/*-------------------------------------------------------------------------*/ 1768/*-------------------------------------------------------------------------*/
1726 1769
@@ -2438,7 +2481,7 @@ static struct pxa2xx_udc memory = {
2438static int __init pxa2xx_udc_probe(struct platform_device *pdev) 2481static int __init pxa2xx_udc_probe(struct platform_device *pdev)
2439{ 2482{
2440 struct pxa2xx_udc *dev = &memory; 2483 struct pxa2xx_udc *dev = &memory;
2441 int retval, out_dma = 1; 2484 int retval, out_dma = 1, vbus_irq;
2442 u32 chiprev; 2485 u32 chiprev;
2443 2486
2444 /* insist on Intel/ARM/XScale */ 2487 /* insist on Intel/ARM/XScale */
@@ -2502,6 +2545,16 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev)
2502 /* other non-static parts of init */ 2545 /* other non-static parts of init */
2503 dev->dev = &pdev->dev; 2546 dev->dev = &pdev->dev;
2504 dev->mach = pdev->dev.platform_data; 2547 dev->mach = pdev->dev.platform_data;
2548 if (dev->mach->gpio_vbus) {
2549 vbus_irq = IRQ_GPIO(dev->mach->gpio_vbus & GPIO_MD_MASK_NR);
2550 pxa_gpio_mode((dev->mach->gpio_vbus & GPIO_MD_MASK_NR)
2551 | GPIO_IN);
2552 set_irq_type(vbus_irq, IRQT_BOTHEDGE);
2553 } else
2554 vbus_irq = 0;
2555 if (dev->mach->gpio_pullup)
2556 pxa_gpio_mode((dev->mach->gpio_pullup & GPIO_MD_MASK_NR)
2557 | GPIO_OUT | GPIO_DFLT_LOW);
2505 2558
2506 init_timer(&dev->timer); 2559 init_timer(&dev->timer);
2507 dev->timer.function = udc_watchdog; 2560 dev->timer.function = udc_watchdog;
@@ -2557,8 +2610,19 @@ lubbock_fail0:
2557 HEX_DISPLAY(dev->stats.irqs); 2610 HEX_DISPLAY(dev->stats.irqs);
2558 LUB_DISC_BLNK_LED &= 0xff; 2611 LUB_DISC_BLNK_LED &= 0xff;
2559#endif 2612#endif
2560 } 2613 } else
2561#endif 2614#endif
2615 if (vbus_irq) {
2616 retval = request_irq(vbus_irq, udc_vbus_irq,
2617 SA_INTERRUPT | SA_SAMPLE_RANDOM,
2618 driver_name, dev);
2619 if (retval != 0) {
2620 printk(KERN_ERR "%s: can't get irq %i, err %d\n",
2621 driver_name, vbus_irq, retval);
2622 free_irq(IRQ_USB, dev);
2623 return -EBUSY;
2624 }
2625 }
2562 create_proc_files(); 2626 create_proc_files();
2563 2627
2564 return 0; 2628 return 0;
@@ -2587,6 +2651,8 @@ static int __exit pxa2xx_udc_remove(struct platform_device *pdev)
2587 free_irq(LUBBOCK_USB_IRQ, dev); 2651 free_irq(LUBBOCK_USB_IRQ, dev);
2588 } 2652 }
2589#endif 2653#endif
2654 if (dev->mach->gpio_vbus)
2655 free_irq(IRQ_GPIO(dev->mach->gpio_vbus), dev);
2590 platform_set_drvdata(pdev, NULL); 2656 platform_set_drvdata(pdev, NULL);
2591 the_controller = NULL; 2657 the_controller = NULL;
2592 return 0; 2658 return 0;
diff --git a/drivers/usb/gadget/pxa2xx_udc.h b/drivers/usb/gadget/pxa2xx_udc.h
index 19a883f7d1b8..8e598c8bf4e3 100644
--- a/drivers/usb/gadget/pxa2xx_udc.h
+++ b/drivers/usb/gadget/pxa2xx_udc.h
@@ -177,27 +177,19 @@ struct pxa2xx_udc {
177 177
178static struct pxa2xx_udc *the_controller; 178static struct pxa2xx_udc *the_controller;
179 179
180/* one GPIO should be used to detect VBUS from the host */ 180static inline int pxa_gpio_get(unsigned gpio)
181static inline int is_vbus_present(void)
182{ 181{
183 if (!the_controller->mach->udc_is_connected) 182 return (GPLR(gpio) & GPIO_bit(gpio)) != 0;
184 return 1;
185 return the_controller->mach->udc_is_connected();
186} 183}
187 184
188/* one GPIO should control a D+ pullup, so host sees this device (or not) */ 185static inline void pxa_gpio_set(unsigned gpio, int is_on)
189static inline void pullup_off(void)
190{ 186{
191 if (!the_controller->mach->udc_command) 187 int mask = GPIO_bit(gpio);
192 return;
193 the_controller->mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
194}
195 188
196static inline void pullup_on(void) 189 if (is_on)
197{ 190 GPSR(gpio) = mask;
198 if (!the_controller->mach->udc_command) 191 else
199 return; 192 GPCR(gpio) = mask;
200 the_controller->mach->udc_command(PXA2XX_UDC_CMD_CONNECT);
201} 193}
202 194
203/*-------------------------------------------------------------------------*/ 195/*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index e762aa19ab0a..b893e3118e1b 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -1120,12 +1120,15 @@ static int gs_send(struct gs_dev *dev)
1120gs_debug_level(3, "gs_send: len=%d, 0x%2.2x 0x%2.2x 0x%2.2x ...\n", len, *((unsigned char *)req->buf), *((unsigned char *)req->buf+1), *((unsigned char *)req->buf+2)); 1120gs_debug_level(3, "gs_send: len=%d, 0x%2.2x 0x%2.2x 0x%2.2x ...\n", len, *((unsigned char *)req->buf), *((unsigned char *)req->buf+1), *((unsigned char *)req->buf+2));
1121 list_del(&req_entry->re_entry); 1121 list_del(&req_entry->re_entry);
1122 req->length = len; 1122 req->length = len;
1123 spin_unlock_irqrestore(&dev->dev_lock, flags);
1123 if ((ret=usb_ep_queue(ep, req, GFP_ATOMIC))) { 1124 if ((ret=usb_ep_queue(ep, req, GFP_ATOMIC))) {
1124 printk(KERN_ERR 1125 printk(KERN_ERR
1125 "gs_send: cannot queue read request, ret=%d\n", 1126 "gs_send: cannot queue read request, ret=%d\n",
1126 ret); 1127 ret);
1128 spin_lock_irqsave(&dev->dev_lock, flags);
1127 break; 1129 break;
1128 } 1130 }
1131 spin_lock_irqsave(&dev->dev_lock, flags);
1129 } else { 1132 } else {
1130 break; 1133 break;
1131 } 1134 }
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-25 05:29:40 -0500