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2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da 
 kernel/drivers/input/joystick/iforce/iforce-packets.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
34  *  Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
....@@ -5,22 +6,7 @@
56  *  USB/RS232 I-Force joysticks and wheels.
67  */
78 
8
-/*
9
- * This program is free software; you can redistribute it and/or modify
10
- * it under the terms of the GNU General Public License as published by
11
- * the Free Software Foundation; either version 2 of the License, or
12
- * (at your option) any later version.
13
- *
14
- * This program is distributed in the hope that it will be useful,
15
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
16
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
- * GNU General Public License for more details.
18
- *
19
- * You should have received a copy of the GNU General Public License
20
- * along with this program; if not, write to the Free Software
21
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22
- */
23
-
9
+#include <asm/unaligned.h>
2410 #include "iforce.h"
2511 
2612 static struct {
....@@ -91,27 +77,12 @@
9177 /*
9278  * If necessary, start the transmission
9379  */
94
-	switch (iforce->bus) {
80
+	if (empty)
81
+		iforce->xport_ops->xmit(iforce);
9582 
96
-#ifdef CONFIG_JOYSTICK_IFORCE_232
97
-		case IFORCE_232:
98
-		if (empty)
99
-			iforce_serial_xmit(iforce);
100
-		break;
101
-#endif
102
-#ifdef CONFIG_JOYSTICK_IFORCE_USB
103
-		case IFORCE_USB:
104
-
105
-		if (iforce->usbdev && empty &&
106
-			!test_and_set_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags)) {
107
-
108
-			iforce_usb_xmit(iforce);
109
-		}
110
-		break;
111
-#endif
112
-	}
11383 	return 0;
11484 }
85
+EXPORT_SYMBOL(iforce_send_packet);
11586 
11687 /* Start or stop an effect */
11788 int iforce_control_playback(struct iforce* iforce, u16 id, unsigned int value)
....@@ -145,157 +116,96 @@
145116 	return -1;
146117 }
147118 
148
-void iforce_process_packet(struct iforce *iforce, u16 cmd, unsigned char *data)
119
+static void iforce_report_hats_buttons(struct iforce *iforce, u8 *data)
149120 {
150121 	struct input_dev *dev = iforce->dev;
151122 	int i;
152
-	static int being_used = 0;
153123 
154
-	if (being_used)
155
-		dev_warn(&iforce->dev->dev,
156
-			 "re-entrant call to iforce_process %d\n", being_used);
157
-	being_used++;
124
+	input_report_abs(dev, ABS_HAT0X, iforce_hat_to_axis[data[6] >> 4].x);
125
+	input_report_abs(dev, ABS_HAT0Y, iforce_hat_to_axis[data[6] >> 4].y);
158126 
159
-#ifdef CONFIG_JOYSTICK_IFORCE_232
160
-	if (HI(iforce->expect_packet) == HI(cmd)) {
161
-		iforce->expect_packet = 0;
162
-		iforce->ecmd = cmd;
163
-		memcpy(iforce->edata, data, IFORCE_MAX_LENGTH);
127
+	for (i = 0; iforce->type->btn[i] >= 0; i++)
128
+		input_report_key(dev, iforce->type->btn[i],
129
+				 data[(i >> 3) + 5] & (1 << (i & 7)));
130
+
131
+	/* If there are untouched bits left, interpret them as the second hat */
132
+	if (i <= 8) {
133
+		u8 btns = data[6];
134
+
135
+		if (test_bit(ABS_HAT1X, dev->absbit)) {
136
+			if (btns & BIT(3))
137
+				input_report_abs(dev, ABS_HAT1X, -1);
138
+			else if (btns & BIT(1))
139
+				input_report_abs(dev, ABS_HAT1X, 1);
140
+			else
141
+				input_report_abs(dev, ABS_HAT1X, 0);
142
+		}
143
+
144
+		if (test_bit(ABS_HAT1Y, dev->absbit)) {
145
+			if (btns & BIT(0))
146
+				input_report_abs(dev, ABS_HAT1Y, -1);
147
+			else if (btns & BIT(2))
148
+				input_report_abs(dev, ABS_HAT1Y, 1);
149
+			else
150
+				input_report_abs(dev, ABS_HAT1Y, 0);
151
+		}
164152 	}
165
-#endif
166
-	wake_up(&iforce->wait);
167
-
168
-	if (!iforce->type) {
169
-		being_used--;
170
-		return;
171
-	}
172
-
173
-	switch (HI(cmd)) {
174
-
175
-		case 0x01:	/* joystick position data */
176
-		case 0x03:	/* wheel position data */
177
-			if (HI(cmd) == 1) {
178
-				input_report_abs(dev, ABS_X, (__s16) (((__s16)data[1] << 8) | data[0]));
179
-				input_report_abs(dev, ABS_Y, (__s16) (((__s16)data[3] << 8) | data[2]));
180
-				input_report_abs(dev, ABS_THROTTLE, 255 - data[4]);
181
-				if (LO(cmd) >= 8 && test_bit(ABS_RUDDER ,dev->absbit))
182
-					input_report_abs(dev, ABS_RUDDER, (__s8)data[7]);
183
-			} else {
184
-				input_report_abs(dev, ABS_WHEEL, (__s16) (((__s16)data[1] << 8) | data[0]));
185
-				input_report_abs(dev, ABS_GAS,   255 - data[2]);
186
-				input_report_abs(dev, ABS_BRAKE, 255 - data[3]);
187
-			}
188
-
189
-			input_report_abs(dev, ABS_HAT0X, iforce_hat_to_axis[data[6] >> 4].x);
190
-			input_report_abs(dev, ABS_HAT0Y, iforce_hat_to_axis[data[6] >> 4].y);
191
-
192
-			for (i = 0; iforce->type->btn[i] >= 0; i++)
193
-				input_report_key(dev, iforce->type->btn[i], data[(i >> 3) + 5] & (1 << (i & 7)));
194
-
195
-			/* If there are untouched bits left, interpret them as the second hat */
196
-			if (i <= 8) {
197
-				int btns = data[6];
198
-				if (test_bit(ABS_HAT1X, dev->absbit)) {
199
-					if (btns & 8) input_report_abs(dev, ABS_HAT1X, -1);
200
-					else if (btns & 2) input_report_abs(dev, ABS_HAT1X, 1);
201
-					else input_report_abs(dev, ABS_HAT1X, 0);
202
-				}
203
-				if (test_bit(ABS_HAT1Y, dev->absbit)) {
204
-					if (btns & 1) input_report_abs(dev, ABS_HAT1Y, -1);
205
-					else if (btns & 4) input_report_abs(dev, ABS_HAT1Y, 1);
206
-					else input_report_abs(dev, ABS_HAT1Y, 0);
207
-				}
208
-			}
209
-
210
-			input_sync(dev);
211
-
212
-			break;
213
-
214
-		case 0x02:	/* status report */
215
-			input_report_key(dev, BTN_DEAD, data[0] & 0x02);
216
-			input_sync(dev);
217
-
218
-			/* Check if an effect was just started or stopped */
219
-			i = data[1] & 0x7f;
220
-			if (data[1] & 0x80) {
221
-				if (!test_and_set_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
222
-					/* Report play event */
223
-					input_report_ff_status(dev, i, FF_STATUS_PLAYING);
224
-				}
225
-			} else if (test_and_clear_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
226
-				/* Report stop event */
227
-				input_report_ff_status(dev, i, FF_STATUS_STOPPED);
228
-			}
229
-			if (LO(cmd) > 3) {
230
-				int j;
231
-				for (j = 3; j < LO(cmd); j += 2)
232
-					mark_core_as_ready(iforce, data[j] | (data[j+1]<<8));
233
-			}
234
-			break;
235
-	}
236
-	being_used--;
237153 }
238154 
239
-int iforce_get_id_packet(struct iforce *iforce, char *packet)
155
+void iforce_process_packet(struct iforce *iforce,
156
+			   u8 packet_id, u8 *data, size_t len)
240157 {
241
-	switch (iforce->bus) {
158
+	struct input_dev *dev = iforce->dev;
159
+	int i, j;
242160 
243
-	case IFORCE_USB: {
244
-#ifdef CONFIG_JOYSTICK_IFORCE_USB
245
-		int status;
161
+	switch (packet_id) {
246162 
247
-		iforce->cr.bRequest = packet[0];
248
-		iforce->ctrl->dev = iforce->usbdev;
163
+	case 0x01:	/* joystick position data */
164
+		input_report_abs(dev, ABS_X,
165
+				 (__s16) get_unaligned_le16(data));
166
+		input_report_abs(dev, ABS_Y,
167
+				 (__s16) get_unaligned_le16(data + 2));
168
+		input_report_abs(dev, ABS_THROTTLE, 255 - data[4]);
249169 
250
-		status = usb_submit_urb(iforce->ctrl, GFP_KERNEL);
251
-		if (status) {
252
-			dev_err(&iforce->intf->dev,
253
-				"usb_submit_urb failed %d\n", status);
254
-			return -1;
255
-		}
170
+		if (len >= 8 && test_bit(ABS_RUDDER ,dev->absbit))
171
+			input_report_abs(dev, ABS_RUDDER, (__s8)data[7]);
256172 
257
-		wait_event_interruptible_timeout(iforce->wait,
258
-			iforce->ctrl->status != -EINPROGRESS, HZ);
173
+		iforce_report_hats_buttons(iforce, data);
259174 
260
-		if (iforce->ctrl->status) {
261
-			dev_dbg(&iforce->intf->dev,
262
-				"iforce->ctrl->status = %d\n",
263
-				iforce->ctrl->status);
264
-			usb_unlink_urb(iforce->ctrl);
265
-			return -1;
266
-		}
267
-#else
268
-		printk(KERN_DEBUG "iforce_get_id_packet: iforce->bus = USB!\n");
269
-#endif
270
-		}
175
+		input_sync(dev);
271176 		break;
272177 
273
-	case IFORCE_232:
178
+	case 0x03:	/* wheel position data */
179
+		input_report_abs(dev, ABS_WHEEL,
180
+				 (__s16) get_unaligned_le16(data));
181
+		input_report_abs(dev, ABS_GAS,   255 - data[2]);
182
+		input_report_abs(dev, ABS_BRAKE, 255 - data[3]);
274183 
275
-#ifdef CONFIG_JOYSTICK_IFORCE_232
276
-		iforce->expect_packet = FF_CMD_QUERY;
277
-		iforce_send_packet(iforce, FF_CMD_QUERY, packet);
184
+		iforce_report_hats_buttons(iforce, data);
278185 
279
-		wait_event_interruptible_timeout(iforce->wait,
280
-			!iforce->expect_packet, HZ);
281
-
282
-		if (iforce->expect_packet) {
283
-			iforce->expect_packet = 0;
284
-			return -1;
285
-		}
286
-#else
287
-		dev_err(&iforce->dev->dev,
288
-			"iforce_get_id_packet: iforce->bus = SERIO!\n");
289
-#endif
186
+		input_sync(dev);
290187 		break;
291188 
292
-	default:
293
-		dev_err(&iforce->dev->dev,
294
-			"iforce_get_id_packet: iforce->bus = %d\n",
295
-			iforce->bus);
189
+	case 0x02:	/* status report */
190
+		input_report_key(dev, BTN_DEAD, data[0] & 0x02);
191
+		input_sync(dev);
192
+
193
+		/* Check if an effect was just started or stopped */
194
+		i = data[1] & 0x7f;
195
+		if (data[1] & 0x80) {
196
+			if (!test_and_set_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
197
+				/* Report play event */
198
+				input_report_ff_status(dev, i, FF_STATUS_PLAYING);
199
+			}
200
+		} else if (test_and_clear_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
201
+			/* Report stop event */
202
+			input_report_ff_status(dev, i, FF_STATUS_STOPPED);
203
+		}
204
+
205
+		for (j = 3; j < len; j += 2)
206
+			mark_core_as_ready(iforce, get_unaligned_le16(data + j));
207
+
296208 		break;
297209 	}
298
-
299
-	return -(iforce->edata[0] != packet[0]);
300210 }
301
-
211
+EXPORT_SYMBOL(iforce_process_packet);