blob: e435d94c0776d657403c391f6ca0b9877f100339 [file] [log] [blame]
Jarod Wilson19770692010-07-26 20:32:49 -03001/*
2 * Streamzap Remote Control driver
3 *
4 * Copyright (c) 2005 Christoph Bartelmus <lirc@bartelmus.de>
Jarod Wilson8e9e6062010-08-03 01:07:04 -03005 * Copyright (c) 2010 Jarod Wilson <jarod@wilsonet.com>
Jarod Wilson19770692010-07-26 20:32:49 -03006 *
7 * This driver was based on the work of Greg Wickham and Adrian
8 * Dewhurst. It was substantially rewritten to support correct signal
9 * gaps and now maintains a delay buffer, which is used to present
10 * consistent timing behaviour to user space applications. Without the
11 * delay buffer an ugly hack would be required in lircd, which can
12 * cause sluggish signal decoding in certain situations.
13 *
Jarod Wilson8e9e6062010-08-03 01:07:04 -030014 * Ported to in-kernel ir-core interface by Jarod Wilson
15 *
Jarod Wilson19770692010-07-26 20:32:49 -030016 * This driver is based on the USB skeleton driver packaged with the
17 * kernel; copyright (C) 2001-2003 Greg Kroah-Hartman (greg@kroah.com)
18 *
19 * This program is free software; you can redistribute it and/or modify
20 * it under the terms of the GNU General Public License as published by
21 * the Free Software Foundation; either version 2 of the License, or
22 * (at your option) any later version.
23 *
24 * This program is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
28 *
29 * You should have received a copy of the GNU General Public License
30 * along with this program; if not, write to the Free Software
31 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 */
33
Jarod Wilson8e9e6062010-08-03 01:07:04 -030034#include <linux/device.h>
Jarod Wilson19770692010-07-26 20:32:49 -030035#include <linux/module.h>
Jarod Wilson8e9e6062010-08-03 01:07:04 -030036#include <linux/slab.h>
Paul Bender635f76b2010-12-16 13:23:07 -030037#include <linux/usb.h>
38#include <linux/usb/input.h>
Mauro Carvalho Chehab6bda9642010-11-17 13:28:38 -030039#include <media/rc-core.h>
Jarod Wilson19770692010-07-26 20:32:49 -030040
Jarod Wilson7a569f52010-08-07 13:31:40 -030041#define DRIVER_VERSION "1.61"
Jarod Wilson8e9e6062010-08-03 01:07:04 -030042#define DRIVER_NAME "streamzap"
Jarod Wilson19770692010-07-26 20:32:49 -030043#define DRIVER_DESC "Streamzap Remote Control driver"
44
Jarod Wilson8e9e6062010-08-03 01:07:04 -030045#ifdef CONFIG_USB_DEBUG
46static int debug = 1;
47#else
Jarod Wilson19770692010-07-26 20:32:49 -030048static int debug;
Jarod Wilson8e9e6062010-08-03 01:07:04 -030049#endif
Jarod Wilson19770692010-07-26 20:32:49 -030050
51#define USB_STREAMZAP_VENDOR_ID 0x0e9c
52#define USB_STREAMZAP_PRODUCT_ID 0x0000
53
Jarod Wilson19770692010-07-26 20:32:49 -030054/* table of devices that work with this driver */
55static struct usb_device_id streamzap_table[] = {
56 /* Streamzap Remote Control */
57 { USB_DEVICE(USB_STREAMZAP_VENDOR_ID, USB_STREAMZAP_PRODUCT_ID) },
58 /* Terminating entry */
59 { }
60};
61
62MODULE_DEVICE_TABLE(usb, streamzap_table);
63
Jarod Wilsonb768d472010-10-12 10:41:27 -030064#define SZ_PULSE_MASK 0xf0
65#define SZ_SPACE_MASK 0x0f
66#define SZ_TIMEOUT 0xff
67#define SZ_RESOLUTION 256
Jarod Wilson19770692010-07-26 20:32:49 -030068
69/* number of samples buffered */
Jarod Wilson8e9e6062010-08-03 01:07:04 -030070#define SZ_BUF_LEN 128
Jarod Wilson19770692010-07-26 20:32:49 -030071
Jarod Wilson7a569f52010-08-07 13:31:40 -030072/* from ir-rc5-sz-decoder.c */
73#ifdef CONFIG_IR_RC5_SZ_DECODER_MODULE
74#define load_rc5_sz_decode() request_module("ir-rc5-sz-decoder")
75#else
Mauro Carvalho Chehab0170f6b2010-12-27 13:00:04 -030076#define load_rc5_sz_decode() {}
Jarod Wilson7a569f52010-08-07 13:31:40 -030077#endif
78
Jarod Wilson19770692010-07-26 20:32:49 -030079enum StreamzapDecoderState {
80 PulseSpace,
81 FullPulse,
82 FullSpace,
83 IgnorePulse
84};
85
Jarod Wilson8e9e6062010-08-03 01:07:04 -030086/* structure to hold our device specific stuff */
87struct streamzap_ir {
Jarod Wilson8e9e6062010-08-03 01:07:04 -030088 /* ir-core */
David Härdemand8b4b582010-10-29 16:08:23 -030089 struct rc_dev *rdev;
Jarod Wilson8e9e6062010-08-03 01:07:04 -030090
91 /* core device info */
92 struct device *dev;
Jarod Wilson19770692010-07-26 20:32:49 -030093
94 /* usb */
Jarod Wilson8e9e6062010-08-03 01:07:04 -030095 struct usb_device *usbdev;
Jarod Wilson19770692010-07-26 20:32:49 -030096 struct usb_interface *interface;
Jarod Wilson8e9e6062010-08-03 01:07:04 -030097 struct usb_endpoint_descriptor *endpoint;
98 struct urb *urb_in;
Jarod Wilson19770692010-07-26 20:32:49 -030099
100 /* buffer & dma */
101 unsigned char *buf_in;
102 dma_addr_t dma_in;
103 unsigned int buf_in_len;
104
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300105 /* track what state we're in */
106 enum StreamzapDecoderState decoder_state;
Jarod Wilson19770692010-07-26 20:32:49 -0300107 /* tracks whether we are currently receiving some signal */
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300108 bool idle;
Jarod Wilson19770692010-07-26 20:32:49 -0300109 /* sum of signal lengths received since signal start */
110 unsigned long sum;
111 /* start time of signal; necessary for gap tracking */
112 struct timeval signal_last;
113 struct timeval signal_start;
Jarod Wilson7a569f52010-08-07 13:31:40 -0300114 bool timeout_enabled;
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300115
116 char name[128];
117 char phys[64];
Jarod Wilson19770692010-07-26 20:32:49 -0300118};
119
120
121/* local function prototypes */
122static int streamzap_probe(struct usb_interface *interface,
123 const struct usb_device_id *id);
124static void streamzap_disconnect(struct usb_interface *interface);
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300125static void streamzap_callback(struct urb *urb);
Jarod Wilson19770692010-07-26 20:32:49 -0300126static int streamzap_suspend(struct usb_interface *intf, pm_message_t message);
127static int streamzap_resume(struct usb_interface *intf);
128
129/* usb specific object needed to register this driver with the usb subsystem */
Jarod Wilson19770692010-07-26 20:32:49 -0300130static struct usb_driver streamzap_driver = {
131 .name = DRIVER_NAME,
132 .probe = streamzap_probe,
133 .disconnect = streamzap_disconnect,
134 .suspend = streamzap_suspend,
135 .resume = streamzap_resume,
136 .id_table = streamzap_table,
137};
138
Jarod Wilson7a569f52010-08-07 13:31:40 -0300139static void sz_push(struct streamzap_ir *sz, struct ir_raw_event rawir)
Jarod Wilson19770692010-07-26 20:32:49 -0300140{
Jarod Wilson1338c922010-11-17 12:25:45 -0300141 dev_dbg(sz->dev, "Storing %s with duration %u us\n",
142 (rawir.pulse ? "pulse" : "space"), rawir.duration);
David Härdemand8b4b582010-10-29 16:08:23 -0300143 ir_raw_event_store_with_filter(sz->rdev, &rawir);
Jarod Wilson19770692010-07-26 20:32:49 -0300144}
145
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300146static void sz_push_full_pulse(struct streamzap_ir *sz,
147 unsigned char value)
Jarod Wilson19770692010-07-26 20:32:49 -0300148{
Maxim Levitsky46519182010-10-16 19:56:28 -0300149 DEFINE_IR_RAW_EVENT(rawir);
Jarod Wilson7a569f52010-08-07 13:31:40 -0300150
Jarod Wilson19770692010-07-26 20:32:49 -0300151 if (sz->idle) {
152 long deltv;
Jarod Wilson19770692010-07-26 20:32:49 -0300153
154 sz->signal_last = sz->signal_start;
155 do_gettimeofday(&sz->signal_start);
156
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300157 deltv = sz->signal_start.tv_sec - sz->signal_last.tv_sec;
Jarod Wilson7a569f52010-08-07 13:31:40 -0300158 rawir.pulse = false;
Jarod Wilson19770692010-07-26 20:32:49 -0300159 if (deltv > 15) {
160 /* really long time */
Jarod Wilson7a569f52010-08-07 13:31:40 -0300161 rawir.duration = IR_MAX_DURATION;
Jarod Wilson19770692010-07-26 20:32:49 -0300162 } else {
Jarod Wilson7a569f52010-08-07 13:31:40 -0300163 rawir.duration = (int)(deltv * 1000000 +
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300164 sz->signal_start.tv_usec -
165 sz->signal_last.tv_usec);
Jarod Wilson7a569f52010-08-07 13:31:40 -0300166 rawir.duration -= sz->sum;
Jarod Wilsonb4608fa2011-01-18 17:31:24 -0300167 rawir.duration = US_TO_NS(rawir.duration);
Jarod Wilson7a569f52010-08-07 13:31:40 -0300168 rawir.duration &= IR_MAX_DURATION;
Jarod Wilson19770692010-07-26 20:32:49 -0300169 }
Jarod Wilson7a569f52010-08-07 13:31:40 -0300170 sz_push(sz, rawir);
Jarod Wilson19770692010-07-26 20:32:49 -0300171
Jarod Wilson7a569f52010-08-07 13:31:40 -0300172 sz->idle = false;
Jarod Wilson19770692010-07-26 20:32:49 -0300173 sz->sum = 0;
174 }
175
Jarod Wilson7a569f52010-08-07 13:31:40 -0300176 rawir.pulse = true;
Jarod Wilsonb768d472010-10-12 10:41:27 -0300177 rawir.duration = ((int) value) * SZ_RESOLUTION;
178 rawir.duration += SZ_RESOLUTION / 2;
Jarod Wilson7a569f52010-08-07 13:31:40 -0300179 sz->sum += rawir.duration;
Jarod Wilsonb4608fa2011-01-18 17:31:24 -0300180 rawir.duration = US_TO_NS(rawir.duration);
Jarod Wilson7a569f52010-08-07 13:31:40 -0300181 rawir.duration &= IR_MAX_DURATION;
Jarod Wilson7a569f52010-08-07 13:31:40 -0300182 sz_push(sz, rawir);
Jarod Wilson19770692010-07-26 20:32:49 -0300183}
184
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300185static void sz_push_half_pulse(struct streamzap_ir *sz,
186 unsigned char value)
Jarod Wilson19770692010-07-26 20:32:49 -0300187{
Jarod Wilsonb768d472010-10-12 10:41:27 -0300188 sz_push_full_pulse(sz, (value & SZ_PULSE_MASK) >> 4);
Jarod Wilson19770692010-07-26 20:32:49 -0300189}
190
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300191static void sz_push_full_space(struct streamzap_ir *sz,
192 unsigned char value)
Jarod Wilson19770692010-07-26 20:32:49 -0300193{
Maxim Levitsky46519182010-10-16 19:56:28 -0300194 DEFINE_IR_RAW_EVENT(rawir);
Jarod Wilson7a569f52010-08-07 13:31:40 -0300195
196 rawir.pulse = false;
Jarod Wilsonb768d472010-10-12 10:41:27 -0300197 rawir.duration = ((int) value) * SZ_RESOLUTION;
198 rawir.duration += SZ_RESOLUTION / 2;
Jarod Wilson7a569f52010-08-07 13:31:40 -0300199 sz->sum += rawir.duration;
Jarod Wilsonb4608fa2011-01-18 17:31:24 -0300200 rawir.duration = US_TO_NS(rawir.duration);
Jarod Wilson7a569f52010-08-07 13:31:40 -0300201 sz_push(sz, rawir);
Jarod Wilson19770692010-07-26 20:32:49 -0300202}
203
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300204static void sz_push_half_space(struct streamzap_ir *sz,
205 unsigned long value)
Jarod Wilson19770692010-07-26 20:32:49 -0300206{
Jarod Wilsonb768d472010-10-12 10:41:27 -0300207 sz_push_full_space(sz, value & SZ_SPACE_MASK);
Jarod Wilson19770692010-07-26 20:32:49 -0300208}
209
210/**
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300211 * streamzap_callback - usb IRQ handler callback
Jarod Wilson19770692010-07-26 20:32:49 -0300212 *
213 * This procedure is invoked on reception of data from
214 * the usb remote.
215 */
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300216static void streamzap_callback(struct urb *urb)
Jarod Wilson19770692010-07-26 20:32:49 -0300217{
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300218 struct streamzap_ir *sz;
219 unsigned int i;
220 int len;
Jarod Wilson19770692010-07-26 20:32:49 -0300221
222 if (!urb)
223 return;
224
225 sz = urb->context;
226 len = urb->actual_length;
227
228 switch (urb->status) {
229 case -ECONNRESET:
230 case -ENOENT:
231 case -ESHUTDOWN:
232 /*
233 * this urb is terminated, clean up.
234 * sz might already be invalid at this point
235 */
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300236 dev_err(sz->dev, "urb terminated, status: %d\n", urb->status);
Jarod Wilson19770692010-07-26 20:32:49 -0300237 return;
238 default:
239 break;
240 }
241
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300242 dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len);
Jarod Wilson7a569f52010-08-07 13:31:40 -0300243 for (i = 0; i < len; i++) {
Jarod Wilson1338c922010-11-17 12:25:45 -0300244 dev_dbg(sz->dev, "sz->buf_in[%d]: %x\n",
Jarod Wilson7a569f52010-08-07 13:31:40 -0300245 i, (unsigned char)sz->buf_in[i]);
246 switch (sz->decoder_state) {
247 case PulseSpace:
Jarod Wilsonb768d472010-10-12 10:41:27 -0300248 if ((sz->buf_in[i] & SZ_PULSE_MASK) ==
249 SZ_PULSE_MASK) {
Jarod Wilson7a569f52010-08-07 13:31:40 -0300250 sz->decoder_state = FullPulse;
251 continue;
Jarod Wilsonb768d472010-10-12 10:41:27 -0300252 } else if ((sz->buf_in[i] & SZ_SPACE_MASK)
253 == SZ_SPACE_MASK) {
Jarod Wilson7a569f52010-08-07 13:31:40 -0300254 sz_push_half_pulse(sz, sz->buf_in[i]);
255 sz->decoder_state = FullSpace;
256 continue;
257 } else {
258 sz_push_half_pulse(sz, sz->buf_in[i]);
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300259 sz_push_half_space(sz, sz->buf_in[i]);
Jarod Wilson19770692010-07-26 20:32:49 -0300260 }
Jarod Wilson7a569f52010-08-07 13:31:40 -0300261 break;
262 case FullPulse:
263 sz_push_full_pulse(sz, sz->buf_in[i]);
264 sz->decoder_state = IgnorePulse;
265 break;
266 case FullSpace:
Jarod Wilsonb768d472010-10-12 10:41:27 -0300267 if (sz->buf_in[i] == SZ_TIMEOUT) {
Maxim Levitsky46519182010-10-16 19:56:28 -0300268 DEFINE_IR_RAW_EVENT(rawir);
Jarod Wilson7a569f52010-08-07 13:31:40 -0300269
270 rawir.pulse = false;
David Härdemand8b4b582010-10-29 16:08:23 -0300271 rawir.duration = sz->rdev->timeout;
Jarod Wilson7a569f52010-08-07 13:31:40 -0300272 sz->idle = true;
273 if (sz->timeout_enabled)
274 sz_push(sz, rawir);
David Härdemand8b4b582010-10-29 16:08:23 -0300275 ir_raw_event_handle(sz->rdev);
Jarod Wilson56b0ec32011-01-27 15:08:35 -0300276 ir_raw_event_reset(sz->rdev);
Jarod Wilson7a569f52010-08-07 13:31:40 -0300277 } else {
278 sz_push_full_space(sz, sz->buf_in[i]);
279 }
280 sz->decoder_state = PulseSpace;
281 break;
282 case IgnorePulse:
Jarod Wilsonb768d472010-10-12 10:41:27 -0300283 if ((sz->buf_in[i] & SZ_SPACE_MASK) ==
284 SZ_SPACE_MASK) {
Jarod Wilson7a569f52010-08-07 13:31:40 -0300285 sz->decoder_state = FullSpace;
286 continue;
287 }
288 sz_push_half_space(sz, sz->buf_in[i]);
289 sz->decoder_state = PulseSpace;
290 break;
Jarod Wilson19770692010-07-26 20:32:49 -0300291 }
292 }
293
Jarod Wilson56b0ec32011-01-27 15:08:35 -0300294 ir_raw_event_handle(sz->rdev);
Jarod Wilson19770692010-07-26 20:32:49 -0300295 usb_submit_urb(urb, GFP_ATOMIC);
296
297 return;
298}
299
David Härdemand8b4b582010-10-29 16:08:23 -0300300static struct rc_dev *streamzap_init_rc_dev(struct streamzap_ir *sz)
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300301{
David Härdemand8b4b582010-10-29 16:08:23 -0300302 struct rc_dev *rdev;
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300303 struct device *dev = sz->dev;
304 int ret;
Jarod Wilson19770692010-07-26 20:32:49 -0300305
David Härdemand8b4b582010-10-29 16:08:23 -0300306 rdev = rc_allocate_device();
307 if (!rdev) {
308 dev_err(dev, "remote dev allocation failed\n");
309 goto out;
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300310 }
311
312 snprintf(sz->name, sizeof(sz->name), "Streamzap PC Remote Infrared "
313 "Receiver (%04x:%04x)",
314 le16_to_cpu(sz->usbdev->descriptor.idVendor),
315 le16_to_cpu(sz->usbdev->descriptor.idProduct));
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300316 usb_make_path(sz->usbdev, sz->phys, sizeof(sz->phys));
317 strlcat(sz->phys, "/input0", sizeof(sz->phys));
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300318
David Härdemand8b4b582010-10-29 16:08:23 -0300319 rdev->input_name = sz->name;
320 rdev->input_phys = sz->phys;
Paul Bender5ad1a552010-11-17 16:56:17 -0300321 usb_to_input_id(sz->usbdev, &rdev->input_id);
322 rdev->dev.parent = dev;
David Härdemand8b4b582010-10-29 16:08:23 -0300323 rdev->priv = sz;
324 rdev->driver_type = RC_DRIVER_IR_RAW;
Mauro Carvalho Chehab52b66142010-11-17 14:20:52 -0300325 rdev->allowed_protos = RC_TYPE_ALL;
David Härdemand8b4b582010-10-29 16:08:23 -0300326 rdev->driver_name = DRIVER_NAME;
327 rdev->map_name = RC_MAP_STREAMZAP;
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300328
David Härdemand8b4b582010-10-29 16:08:23 -0300329 ret = rc_register_device(rdev);
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300330 if (ret < 0) {
331 dev_err(dev, "remote input device register failed\n");
David Härdemand8b4b582010-10-29 16:08:23 -0300332 goto out;
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300333 }
334
David Härdemand8b4b582010-10-29 16:08:23 -0300335 return rdev;
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300336
David Härdemand8b4b582010-10-29 16:08:23 -0300337out:
338 rc_free_device(rdev);
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300339 return NULL;
340}
341
Jarod Wilson19770692010-07-26 20:32:49 -0300342/**
343 * streamzap_probe
344 *
345 * Called by usb-core to associated with a candidate device
346 * On any failure the return value is the ERROR
347 * On success return 0
348 */
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300349static int __devinit streamzap_probe(struct usb_interface *intf,
350 const struct usb_device_id *id)
Jarod Wilson19770692010-07-26 20:32:49 -0300351{
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300352 struct usb_device *usbdev = interface_to_usbdev(intf);
Jarod Wilson19770692010-07-26 20:32:49 -0300353 struct usb_host_interface *iface_host;
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300354 struct streamzap_ir *sz = NULL;
Jarod Wilson19770692010-07-26 20:32:49 -0300355 char buf[63], name[128] = "";
356 int retval = -ENOMEM;
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300357 int pipe, maxp;
Jarod Wilson19770692010-07-26 20:32:49 -0300358
359 /* Allocate space for device driver specific data */
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300360 sz = kzalloc(sizeof(struct streamzap_ir), GFP_KERNEL);
361 if (!sz)
Jarod Wilson19770692010-07-26 20:32:49 -0300362 return -ENOMEM;
363
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300364 sz->usbdev = usbdev;
365 sz->interface = intf;
Jarod Wilson19770692010-07-26 20:32:49 -0300366
367 /* Check to ensure endpoint information matches requirements */
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300368 iface_host = intf->cur_altsetting;
Jarod Wilson19770692010-07-26 20:32:49 -0300369
370 if (iface_host->desc.bNumEndpoints != 1) {
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300371 dev_err(&intf->dev, "%s: Unexpected desc.bNumEndpoints (%d)\n",
372 __func__, iface_host->desc.bNumEndpoints);
Jarod Wilson19770692010-07-26 20:32:49 -0300373 retval = -ENODEV;
374 goto free_sz;
375 }
376
377 sz->endpoint = &(iface_host->endpoint[0].desc);
378 if ((sz->endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
379 != USB_DIR_IN) {
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300380 dev_err(&intf->dev, "%s: endpoint doesn't match input device "
381 "02%02x\n", __func__, sz->endpoint->bEndpointAddress);
Jarod Wilson19770692010-07-26 20:32:49 -0300382 retval = -ENODEV;
383 goto free_sz;
384 }
385
386 if ((sz->endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
387 != USB_ENDPOINT_XFER_INT) {
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300388 dev_err(&intf->dev, "%s: endpoint attributes don't match xfer "
389 "02%02x\n", __func__, sz->endpoint->bmAttributes);
Jarod Wilson19770692010-07-26 20:32:49 -0300390 retval = -ENODEV;
391 goto free_sz;
392 }
393
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300394 pipe = usb_rcvintpipe(usbdev, sz->endpoint->bEndpointAddress);
395 maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe));
396
397 if (maxp == 0) {
398 dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n",
399 __func__);
Jarod Wilson19770692010-07-26 20:32:49 -0300400 retval = -ENODEV;
401 goto free_sz;
402 }
403
404 /* Allocate the USB buffer and IRQ URB */
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300405 sz->buf_in = usb_alloc_coherent(usbdev, maxp, GFP_ATOMIC, &sz->dma_in);
406 if (!sz->buf_in)
Jarod Wilson19770692010-07-26 20:32:49 -0300407 goto free_sz;
408
409 sz->urb_in = usb_alloc_urb(0, GFP_KERNEL);
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300410 if (!sz->urb_in)
411 goto free_buf_in;
Jarod Wilson19770692010-07-26 20:32:49 -0300412
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300413 sz->dev = &intf->dev;
414 sz->buf_in_len = maxp;
Jarod Wilson19770692010-07-26 20:32:49 -0300415
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300416 if (usbdev->descriptor.iManufacturer
417 && usb_string(usbdev, usbdev->descriptor.iManufacturer,
Jarod Wilson19770692010-07-26 20:32:49 -0300418 buf, sizeof(buf)) > 0)
419 strlcpy(name, buf, sizeof(name));
420
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300421 if (usbdev->descriptor.iProduct
422 && usb_string(usbdev, usbdev->descriptor.iProduct,
Jarod Wilson19770692010-07-26 20:32:49 -0300423 buf, sizeof(buf)) > 0)
424 snprintf(name + strlen(name), sizeof(name) - strlen(name),
425 " %s", buf);
426
David Härdemand8b4b582010-10-29 16:08:23 -0300427 sz->rdev = streamzap_init_rc_dev(sz);
428 if (!sz->rdev)
429 goto rc_dev_fail;
Jarod Wilson19770692010-07-26 20:32:49 -0300430
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300431 sz->idle = true;
432 sz->decoder_state = PulseSpace;
Jarod Wilson7a569f52010-08-07 13:31:40 -0300433 /* FIXME: don't yet have a way to set this */
434 sz->timeout_enabled = true;
Jarod Wilsonb4608fa2011-01-18 17:31:24 -0300435 sz->rdev->timeout = ((US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION) &
Jarod Wilson1338c922010-11-17 12:25:45 -0300436 IR_MAX_DURATION) | 0x03000000);
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300437 #if 0
438 /* not yet supported, depends on patches from maxim */
439 /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */
Jarod Wilsonb4608fa2011-01-18 17:31:24 -0300440 sz->min_timeout = US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION);
441 sz->max_timeout = US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION);
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300442 #endif
Jarod Wilson19770692010-07-26 20:32:49 -0300443
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300444 do_gettimeofday(&sz->signal_start);
445
446 /* Complete final initialisations */
447 usb_fill_int_urb(sz->urb_in, usbdev, pipe, sz->buf_in,
448 maxp, (usb_complete_t)streamzap_callback,
449 sz, sz->endpoint->bInterval);
450 sz->urb_in->transfer_dma = sz->dma_in;
451 sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
452
453 usb_set_intfdata(intf, sz);
454
Jarod Wilson7a569f52010-08-07 13:31:40 -0300455 if (usb_submit_urb(sz->urb_in, GFP_ATOMIC))
456 dev_err(sz->dev, "urb submit failed\n");
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300457
458 dev_info(sz->dev, "Registered %s on usb%d:%d\n", name,
459 usbdev->bus->busnum, usbdev->devnum);
Jarod Wilson19770692010-07-26 20:32:49 -0300460
Jarod Wilson7a569f52010-08-07 13:31:40 -0300461 /* Load the streamzap not-quite-rc5 decoder too */
462 load_rc5_sz_decode();
463
Jarod Wilson19770692010-07-26 20:32:49 -0300464 return 0;
465
David Härdemand8b4b582010-10-29 16:08:23 -0300466rc_dev_fail:
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300467 usb_free_urb(sz->urb_in);
468free_buf_in:
469 usb_free_coherent(usbdev, maxp, sz->buf_in, sz->dma_in);
Jarod Wilson19770692010-07-26 20:32:49 -0300470free_sz:
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300471 kfree(sz);
Jarod Wilson19770692010-07-26 20:32:49 -0300472
473 return retval;
474}
475
Jarod Wilson19770692010-07-26 20:32:49 -0300476/**
477 * streamzap_disconnect
478 *
479 * Called by the usb core when the device is removed from the system.
480 *
481 * This routine guarantees that the driver will not submit any more urbs
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300482 * by clearing dev->usbdev. It is also supposed to terminate any currently
Jarod Wilson19770692010-07-26 20:32:49 -0300483 * active urbs. Unfortunately, usb_bulk_msg(), used in streamzap_read(),
484 * does not provide any way to do this.
485 */
486static void streamzap_disconnect(struct usb_interface *interface)
487{
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300488 struct streamzap_ir *sz = usb_get_intfdata(interface);
489 struct usb_device *usbdev = interface_to_usbdev(interface);
Jarod Wilson19770692010-07-26 20:32:49 -0300490
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300491 usb_set_intfdata(interface, NULL);
Jarod Wilson19770692010-07-26 20:32:49 -0300492
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300493 if (!sz)
494 return;
Jarod Wilson19770692010-07-26 20:32:49 -0300495
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300496 sz->usbdev = NULL;
David Härdemand8b4b582010-10-29 16:08:23 -0300497 rc_unregister_device(sz->rdev);
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300498 usb_kill_urb(sz->urb_in);
Jarod Wilson19770692010-07-26 20:32:49 -0300499 usb_free_urb(sz->urb_in);
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300500 usb_free_coherent(usbdev, sz->buf_in_len, sz->buf_in, sz->dma_in);
Jarod Wilson19770692010-07-26 20:32:49 -0300501
Jarod Wilson19770692010-07-26 20:32:49 -0300502 kfree(sz);
Jarod Wilson19770692010-07-26 20:32:49 -0300503}
504
505static int streamzap_suspend(struct usb_interface *intf, pm_message_t message)
506{
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300507 struct streamzap_ir *sz = usb_get_intfdata(intf);
Jarod Wilson19770692010-07-26 20:32:49 -0300508
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300509 usb_kill_urb(sz->urb_in);
510
Jarod Wilson19770692010-07-26 20:32:49 -0300511 return 0;
512}
513
514static int streamzap_resume(struct usb_interface *intf)
515{
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300516 struct streamzap_ir *sz = usb_get_intfdata(intf);
Jarod Wilson19770692010-07-26 20:32:49 -0300517
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300518 if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) {
519 dev_err(sz->dev, "Error sumbiting urb\n");
520 return -EIO;
Jarod Wilson19770692010-07-26 20:32:49 -0300521 }
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300522
Jarod Wilson19770692010-07-26 20:32:49 -0300523 return 0;
524}
525
526/**
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300527 * streamzap_init
Jarod Wilson19770692010-07-26 20:32:49 -0300528 */
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300529static int __init streamzap_init(void)
Jarod Wilson19770692010-07-26 20:32:49 -0300530{
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300531 int ret;
Jarod Wilson19770692010-07-26 20:32:49 -0300532
533 /* register this driver with the USB subsystem */
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300534 ret = usb_register(&streamzap_driver);
535 if (ret < 0)
536 printk(KERN_ERR DRIVER_NAME ": usb register failed, "
537 "result = %d\n", ret);
Jarod Wilson19770692010-07-26 20:32:49 -0300538
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300539 return ret;
Jarod Wilson19770692010-07-26 20:32:49 -0300540}
541
542/**
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300543 * streamzap_exit
Jarod Wilson19770692010-07-26 20:32:49 -0300544 */
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300545static void __exit streamzap_exit(void)
Jarod Wilson19770692010-07-26 20:32:49 -0300546{
547 usb_deregister(&streamzap_driver);
548}
549
550
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300551module_init(streamzap_init);
552module_exit(streamzap_exit);
Jarod Wilson19770692010-07-26 20:32:49 -0300553
Jarod Wilson8e9e6062010-08-03 01:07:04 -0300554MODULE_AUTHOR("Jarod Wilson <jarod@wilsonet.com>");
Jarod Wilson19770692010-07-26 20:32:49 -0300555MODULE_DESCRIPTION(DRIVER_DESC);
556MODULE_LICENSE("GPL");
557
558module_param(debug, bool, S_IRUGO | S_IWUSR);
559MODULE_PARM_DESC(debug, "Enable debugging messages");