Input: iforce - use usb_kill_urb instead of usb_unlink_urb
[linux-2.6.git] / drivers / input / joystick / iforce / iforce-packets.c
1 /*
2  * $Id: iforce-packets.c,v 1.16 2002/07/07 10:22:50 jdeneux Exp $
3  *
4  *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
5  *  Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
6  *
7  *  USB/RS232 I-Force joysticks and wheels.
8  */
9
10 /*
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation; either version 2 of the License, or
14  * (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software
23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24  *
25  * Should you need to contact me, the author, you can do so either by
26  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
27  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
28  */
29
30 #include "iforce.h"
31
32 static struct {
33         __s32 x;
34         __s32 y;
35 } iforce_hat_to_axis[16] = {{ 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
36
37
38 void iforce_dump_packet(char *msg, u16 cmd, unsigned char *data)
39 {
40         int i;
41
42         printk(KERN_DEBUG __FILE__ ": %s cmd = %04x, data = ", msg, cmd);
43         for (i = 0; i < LO(cmd); i++)
44                 printk("%02x ", data[i]);
45         printk("\n");
46 }
47
48 /*
49  * Send a packet of bytes to the device
50  */
51 int iforce_send_packet(struct iforce *iforce, u16 cmd, unsigned char* data)
52 {
53         /* Copy data to buffer */
54         int n = LO(cmd);
55         int c;
56         int empty;
57         int head, tail;
58         unsigned long flags;
59
60 /*
61  * Update head and tail of xmit buffer
62  */
63         spin_lock_irqsave(&iforce->xmit_lock, flags);
64
65         head = iforce->xmit.head;
66         tail = iforce->xmit.tail;
67
68
69         if (CIRC_SPACE(head, tail, XMIT_SIZE) < n+2) {
70                 warn("not enough space in xmit buffer to send new packet");
71                 spin_unlock_irqrestore(&iforce->xmit_lock, flags);
72                 return -1;
73         }
74
75         empty = head == tail;
76         XMIT_INC(iforce->xmit.head, n+2);
77
78 /*
79  * Store packet in xmit buffer
80  */
81         iforce->xmit.buf[head] = HI(cmd);
82         XMIT_INC(head, 1);
83         iforce->xmit.buf[head] = LO(cmd);
84         XMIT_INC(head, 1);
85
86         c = CIRC_SPACE_TO_END(head, tail, XMIT_SIZE);
87         if (n < c) c=n;
88
89         memcpy(&iforce->xmit.buf[head],
90                data,
91                c);
92         if (n != c) {
93                 memcpy(&iforce->xmit.buf[0],
94                        data + c,
95                        n - c);
96         }
97         XMIT_INC(head, n);
98
99         spin_unlock_irqrestore(&iforce->xmit_lock, flags);
100 /*
101  * If necessary, start the transmission
102  */
103         switch (iforce->bus) {
104
105 #ifdef CONFIG_JOYSTICK_IFORCE_232
106                 case IFORCE_232:
107                 if (empty)
108                         iforce_serial_xmit(iforce);
109                 break;
110 #endif
111 #ifdef CONFIG_JOYSTICK_IFORCE_USB
112                 case IFORCE_USB:
113
114                 if (iforce->usbdev && empty &&
115                         !test_and_set_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags)) {
116
117                         iforce_usb_xmit(iforce);
118                 }
119                 break;
120 #endif
121         }
122         return 0;
123 }
124
125 /* Start or stop an effect */
126 int iforce_control_playback(struct iforce* iforce, u16 id, unsigned int value)
127 {
128         unsigned char data[3];
129
130         data[0] = LO(id);
131         data[1] = (value > 0) ? ((value > 1) ? 0x41 : 0x01) : 0;
132         data[2] = LO(value);
133         return iforce_send_packet(iforce, FF_CMD_PLAY, data);
134 }
135
136 /* Mark an effect that was being updated as ready. That means it can be updated
137  * again */
138 static int mark_core_as_ready(struct iforce *iforce, unsigned short addr)
139 {
140         int i;
141
142         if (!iforce->dev->ff)
143                 return 0;
144
145         for (i = 0; i < iforce->dev->ff->max_effects; ++i) {
146                 if (test_bit(FF_CORE_IS_USED, iforce->core_effects[i].flags) &&
147                     (iforce->core_effects[i].mod1_chunk.start == addr ||
148                      iforce->core_effects[i].mod2_chunk.start == addr)) {
149                         clear_bit(FF_CORE_UPDATE, iforce->core_effects[i].flags);
150                         return 0;
151                 }
152         }
153         warn("unused effect %04x updated !!!", addr);
154         return -1;
155 }
156
157 void iforce_process_packet(struct iforce *iforce, u16 cmd, unsigned char *data)
158 {
159         struct input_dev *dev = iforce->dev;
160         int i;
161         static int being_used = 0;
162
163         if (being_used)
164                 warn("re-entrant call to iforce_process %d", being_used);
165         being_used++;
166
167 #ifdef CONFIG_JOYSTICK_IFORCE_232
168         if (HI(iforce->expect_packet) == HI(cmd)) {
169                 iforce->expect_packet = 0;
170                 iforce->ecmd = cmd;
171                 memcpy(iforce->edata, data, IFORCE_MAX_LENGTH);
172         }
173 #endif
174         wake_up(&iforce->wait);
175
176         if (!iforce->type) {
177                 being_used--;
178                 return;
179         }
180
181         switch (HI(cmd)) {
182
183                 case 0x01:      /* joystick position data */
184                 case 0x03:      /* wheel position data */
185                         if (HI(cmd) == 1) {
186                                 input_report_abs(dev, ABS_X, (__s16) (((__s16)data[1] << 8) | data[0]));
187                                 input_report_abs(dev, ABS_Y, (__s16) (((__s16)data[3] << 8) | data[2]));
188                                 input_report_abs(dev, ABS_THROTTLE, 255 - data[4]);
189                                 if (LO(cmd) >= 8 && test_bit(ABS_RUDDER ,dev->absbit))
190                                         input_report_abs(dev, ABS_RUDDER, (__s8)data[7]);
191                         } else {
192                                 input_report_abs(dev, ABS_WHEEL, (__s16) (((__s16)data[1] << 8) | data[0]));
193                                 input_report_abs(dev, ABS_GAS,   255 - data[2]);
194                                 input_report_abs(dev, ABS_BRAKE, 255 - data[3]);
195                         }
196
197                         input_report_abs(dev, ABS_HAT0X, iforce_hat_to_axis[data[6] >> 4].x);
198                         input_report_abs(dev, ABS_HAT0Y, iforce_hat_to_axis[data[6] >> 4].y);
199
200                         for (i = 0; iforce->type->btn[i] >= 0; i++)
201                                 input_report_key(dev, iforce->type->btn[i], data[(i >> 3) + 5] & (1 << (i & 7)));
202
203                         /* If there are untouched bits left, interpret them as the second hat */
204                         if (i <= 8) {
205                                 int btns = data[6];
206                                 if (test_bit(ABS_HAT1X, dev->absbit)) {
207                                         if (btns & 8) input_report_abs(dev, ABS_HAT1X, -1);
208                                         else if (btns & 2) input_report_abs(dev, ABS_HAT1X, 1);
209                                         else input_report_abs(dev, ABS_HAT1X, 0);
210                                 }
211                                 if (test_bit(ABS_HAT1Y, dev->absbit)) {
212                                         if (btns & 1) input_report_abs(dev, ABS_HAT1Y, -1);
213                                         else if (btns & 4) input_report_abs(dev, ABS_HAT1Y, 1);
214                                         else input_report_abs(dev, ABS_HAT1Y, 0);
215                                 }
216                         }
217
218                         input_sync(dev);
219
220                         break;
221
222                 case 0x02:      /* status report */
223                         input_report_key(dev, BTN_DEAD, data[0] & 0x02);
224                         input_sync(dev);
225
226                         /* Check if an effect was just started or stopped */
227                         i = data[1] & 0x7f;
228                         if (data[1] & 0x80) {
229                                 if (!test_and_set_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
230                                         /* Report play event */
231                                         input_report_ff_status(dev, i, FF_STATUS_PLAYING);
232                                 }
233                         } else if (test_and_clear_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
234                                 /* Report stop event */
235                                 input_report_ff_status(dev, i, FF_STATUS_STOPPED);
236                         }
237                         if (LO(cmd) > 3) {
238                                 int j;
239                                 for (j = 3; j < LO(cmd); j += 2)
240                                         mark_core_as_ready(iforce, data[j] | (data[j+1]<<8));
241                         }
242                         break;
243         }
244         being_used--;
245 }
246
247 int iforce_get_id_packet(struct iforce *iforce, char *packet)
248 {
249         switch (iforce->bus) {
250
251         case IFORCE_USB:
252
253 #ifdef CONFIG_JOYSTICK_IFORCE_USB
254                 iforce->cr.bRequest = packet[0];
255                 iforce->ctrl->dev = iforce->usbdev;
256
257                 if (usb_submit_urb(iforce->ctrl, GFP_ATOMIC))
258                         return -1;
259
260                 wait_event_interruptible_timeout(iforce->wait,
261                         iforce->ctrl->status != -EINPROGRESS, HZ);
262
263                 if (iforce->ctrl->status) {
264                         usb_unlink_urb(iforce->ctrl);
265                         return -1;
266                 }
267 #else
268                 err("iforce_get_id_packet: iforce->bus = USB!");
269 #endif
270                 break;
271
272         case IFORCE_232:
273
274 #ifdef CONFIG_JOYSTICK_IFORCE_232
275                 iforce->expect_packet = FF_CMD_QUERY;
276                 iforce_send_packet(iforce, FF_CMD_QUERY, packet);
277
278                 wait_event_interruptible_timeout(iforce->wait,
279                         !iforce->expect_packet, HZ);
280
281                 if (iforce->expect_packet) {
282                         iforce->expect_packet = 0;
283                         return -1;
284                 }
285 #else
286                 err("iforce_get_id_packet: iforce->bus = SERIO!");
287 #endif
288                 break;
289
290         default:
291                 err("iforce_get_id_packet: iforce->bus = %d", iforce->bus);
292                 break;
293         }
294
295         return -(iforce->edata[0] != packet[0]);
296 }
297