1 /*
2 *
3 * Copyright (c) 2003 Gerd Knorr
4 * Copyright (c) 2003 Pavel Machek
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #include <linux/module.h>
22 #include <linux/init.h>
23 #include <linux/delay.h>
24 #include <linux/interrupt.h>
25 #include <linux/input.h>
26
27 #include "bttv.h"
28 #include "bttvp.h"
29
30
31 static int debug;
32 module_param(debug, int, 0644); /* debug level (0,1,2) */
33 static int repeat_delay = 500;
34 module_param(repeat_delay, int, 0644);
35 static int repeat_period = 33;
36 module_param(repeat_period, int, 0644);
37
38 static int ir_rc5_remote_gap = 885;
39 module_param(ir_rc5_remote_gap, int, 0644);
40 static int ir_rc5_key_timeout = 200;
41 module_param(ir_rc5_key_timeout, int, 0644);
42
43 #define DEVNAME "bttv-input"
44
45 /* ---------------------------------------------------------------------- */
46
47 static void ir_handle_key(struct bttv *btv)
48 {
49 struct card_ir *ir = btv->remote;
50 u32 gpio,data;
51
52 /* read gpio value */
53 gpio = bttv_gpio_read(&btv->c);
54 if (ir->polling) {
55 if (ir->last_gpio == gpio)
56 return;
57 ir->last_gpio = gpio;
58 }
59
60 /* extract data */
61 data = ir_extract_bits(gpio, ir->mask_keycode);
62 dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
63 gpio, data,
64 ir->polling ? "poll" : "irq",
65 (gpio & ir->mask_keydown) ? " down" : "",
66 (gpio & ir->mask_keyup) ? " up" : "");
67
68 if ((ir->mask_keydown && (0 != (gpio & ir->mask_keydown))) ||
69 (ir->mask_keyup && (0 == (gpio & ir->mask_keyup)))) {
70 ir_input_keydown(ir->dev,&ir->ir,data,data);
71 } else {
72 /* HACK: Probably, ir->mask_keydown is missing
73 for this board */
74 if (btv->c.type == BTTV_BOARD_WINFAST2000)
75 ir_input_keydown(ir->dev, &ir->ir, data, data);
76
77 ir_input_nokey(ir->dev,&ir->ir);
78 }
79
80 }
81
82 void bttv_input_irq(struct bttv *btv)
83 {
84 struct card_ir *ir = btv->remote;
85
86 if (!ir->polling)
87 ir_handle_key(btv);
88 }
89
90 static void bttv_input_timer(unsigned long data)
91 {
92 struct bttv *btv = (struct bttv*)data;
93 struct card_ir *ir = btv->remote;
94
95 ir_handle_key(btv);
96 mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
97 }
98
99 /* ---------------------------------------------------------------*/
100
101 static int bttv_rc5_irq(struct bttv *btv)
102 {
103 struct card_ir *ir = btv->remote;
104 struct timeval tv;
105 u32 gpio;
106 u32 gap;
107 unsigned long current_jiffies;
108
109 /* read gpio port */
110 gpio = bttv_gpio_read(&btv->c);
111
112 /* remote IRQ? */
113 if (!(gpio & 0x20))
114 return 0;
115
116 /* get time of bit */
117 current_jiffies = jiffies;
118 do_gettimeofday(&tv);
119
120 /* avoid overflow with gap >1s */
121 if (tv.tv_sec - ir->base_time.tv_sec > 1) {
122 gap = 200000;
123 } else {
124 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
125 tv.tv_usec - ir->base_time.tv_usec;
126 }
127
128 /* active code => add bit */
129 if (ir->active) {
130 /* only if in the code (otherwise spurious IRQ or timer
131 late) */
132 if (ir->last_bit < 28) {
133 ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
134 ir_rc5_remote_gap;
135 ir->code |= 1 << ir->last_bit;
136 }
137 /* starting new code */
138 } else {
139 ir->active = 1;
140 ir->code = 0;
141 ir->base_time = tv;
142 ir->last_bit = 0;
143
144 mod_timer(&ir->timer_end,
145 current_jiffies + msecs_to_jiffies(30));
146 }
147
148 /* toggle GPIO pin 4 to reset the irq */
149 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
150 bttv_gpio_write(&btv->c, gpio | (1 << 4));
151 return 1;
152 }
153
154 /* ---------------------------------------------------------------------- */
155
156 static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
157 {
158 if (ir->polling) {
159 setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
160 ir->timer.expires = jiffies + msecs_to_jiffies(1000);
161 add_timer(&ir->timer);
162 } else if (ir->rc5_gpio) {
163 /* set timer_end for code completion */
164 init_timer(&ir->timer_end);
165 ir->timer_end.function = ir_rc5_timer_end;
166 ir->timer_end.data = (unsigned long)ir;
167
168 init_timer(&ir->timer_keyup);
169 ir->timer_keyup.function = ir_rc5_timer_keyup;
170 ir->timer_keyup.data = (unsigned long)ir;
171 ir->shift_by = 1;
172 ir->start = 3;
173 ir->addr = 0x0;
174 ir->rc5_key_timeout = ir_rc5_key_timeout;
175 ir->rc5_remote_gap = ir_rc5_remote_gap;
176 }
177 }
178
179 static void bttv_ir_stop(struct bttv *btv)
180 {
181 if (btv->remote->polling) {
182 del_timer_sync(&btv->remote->timer);
183 flush_scheduled_work();
184 }
185
186 if (btv->remote->rc5_gpio) {
187 u32 gpio;
188
189 del_timer_sync(&btv->remote->timer_end);
190 flush_scheduled_work();
191
192 gpio = bttv_gpio_read(&btv->c);
193 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
194 }
195 }
196
197 int bttv_input_init(struct bttv *btv)
198 {
199 struct card_ir *ir;
200 IR_KEYTAB_TYPE *ir_codes = NULL;
201 struct input_dev *input_dev;
202 int ir_type = IR_TYPE_OTHER;
203 int err = -ENOMEM;
204
205 if (!btv->has_remote)
206 return -ENODEV;
207
208 ir = kzalloc(sizeof(*ir),GFP_KERNEL);
209 input_dev = input_allocate_device();
210 if (!ir || !input_dev)
211 goto err_out_free;
212
213 /* detect & configure */
214 switch (btv->c.type) {
215 case BTTV_BOARD_AVERMEDIA:
216 case BTTV_BOARD_AVPHONE98:
217 case BTTV_BOARD_AVERMEDIA98:
218 ir_codes = ir_codes_avermedia;
219 ir->mask_keycode = 0xf88000;
220 ir->mask_keydown = 0x010000;
221 ir->polling = 50; // ms
222 break;
223
224 case BTTV_BOARD_AVDVBT_761:
225 case BTTV_BOARD_AVDVBT_771:
226 ir_codes = ir_codes_avermedia_dvbt;
227 ir->mask_keycode = 0x0f00c0;
228 ir->mask_keydown = 0x000020;
229 ir->polling = 50; // ms
230 break;
231
232 case BTTV_BOARD_PXELVWPLTVPAK:
233 ir_codes = ir_codes_pixelview;
234 ir->mask_keycode = 0x003e00;
235 ir->mask_keyup = 0x010000;
236 ir->polling = 50; // ms
237 break;
238 case BTTV_BOARD_PV_M4900:
239 case BTTV_BOARD_PV_BT878P_9B:
240 case BTTV_BOARD_PV_BT878P_PLUS:
241 ir_codes = ir_codes_pixelview;
242 ir->mask_keycode = 0x001f00;
243 ir->mask_keyup = 0x008000;
244 ir->polling = 50; // ms
245 break;
246
247 case BTTV_BOARD_WINFAST2000:
248 ir_codes = ir_codes_winfast;
249 ir->mask_keycode = 0x1f8;
250 break;
251 case BTTV_BOARD_MAGICTVIEW061:
252 case BTTV_BOARD_MAGICTVIEW063:
253 ir_codes = ir_codes_winfast;
254 ir->mask_keycode = 0x0008e000;
255 ir->mask_keydown = 0x00200000;
256 break;
257 case BTTV_BOARD_APAC_VIEWCOMP:
258 ir_codes = ir_codes_apac_viewcomp;
259 ir->mask_keycode = 0x001f00;
260 ir->mask_keyup = 0x008000;
261 ir->polling = 50; // ms
262 break;
263 case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
264 case BTTV_BOARD_CONTVFMI:
265 ir_codes = ir_codes_pixelview;
266 ir->mask_keycode = 0x001F00;
267 ir->mask_keyup = 0x006000;
268 ir->polling = 50; // ms
269 break;
270 case BTTV_BOARD_NEBULA_DIGITV:
271 ir_codes = ir_codes_nebula;
272 btv->custom_irq = bttv_rc5_irq;
273 ir->rc5_gpio = 1;
274 break;
275 case BTTV_BOARD_MACHTV_MAGICTV:
276 ir_codes = ir_codes_apac_viewcomp;
277 ir->mask_keycode = 0x001F00;
278 ir->mask_keyup = 0x004000;
279 ir->polling = 50; /* ms */
280 break;
281 }
282 if (NULL == ir_codes) {
283 dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
284 err = -ENODEV;
285 goto err_out_free;
286 }
287
288 if (ir->rc5_gpio) {
289 u32 gpio;
290 /* enable remote irq */
291 bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
292 gpio = bttv_gpio_read(&btv->c);
293 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
294 bttv_gpio_write(&btv->c, gpio | (1 << 4));
295 } else {
296 /* init hardware-specific stuff */
297 bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
298 }
299
300 /* init input device */
301 ir->dev = input_dev;
302
303 snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
304 btv->c.type);
305 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
306 pci_name(btv->c.pci));
307
308 ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
309 input_dev->name = ir->name;
310 input_dev->phys = ir->phys;
311 input_dev->id.bustype = BUS_PCI;
312 input_dev->id.version = 1;
313 if (btv->c.pci->subsystem_vendor) {
314 input_dev->id.vendor = btv->c.pci->subsystem_vendor;
315 input_dev->id.product = btv->c.pci->subsystem_device;
316 } else {
317 input_dev->id.vendor = btv->c.pci->vendor;
318 input_dev->id.product = btv->c.pci->device;
319 }
320 input_dev->dev.parent = &btv->c.pci->dev;
321
322 btv->remote = ir;
323 bttv_ir_start(btv, ir);
324
325 /* all done */
326 err = input_register_device(btv->remote->dev);
327 if (err)
328 goto err_out_stop;
329
330 /* the remote isn't as bouncy as a keyboard */
331 ir->dev->rep[REP_DELAY] = repeat_delay;
332 ir->dev->rep[REP_PERIOD] = repeat_period;
333
334 return 0;
335
336 err_out_stop:
337 bttv_ir_stop(btv);
338 btv->remote = NULL;
339 err_out_free:
340 input_free_device(input_dev);
341 kfree(ir);
342 return err;
343 }
344
345 void bttv_input_fini(struct bttv *btv)
346 {
347 if (btv->remote == NULL)
348 return;
349
350 bttv_ir_stop(btv);
351 input_unregister_device(btv->remote->dev);
352 kfree(btv->remote);
353 btv->remote = NULL;
354 }
355
356
357 /*
358 * Local variables:
359 * c-basic-offset: 8
360 * End:
361 */
362
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