3 * Copyright (c) 2003 Gerd Knorr
4 * Copyright (c) 2003 Pavel Machek
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.
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.
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
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 #include <linux/slab.h>
33 module_param(ir_debug, int, 0644);
34 static int repeat_delay = 500;
35 module_param(repeat_delay, int, 0644);
36 static int repeat_period = 33;
37 module_param(repeat_period, int, 0644);
39 static int ir_rc5_remote_gap = 885;
40 module_param(ir_rc5_remote_gap, int, 0644);
41 static int ir_rc5_key_timeout = 200;
42 module_param(ir_rc5_key_timeout, int, 0644);
45 #define dprintk(arg...) do { \
50 #define DEVNAME "bttv-input"
52 #define MODULE_NAME "bttv"
54 /* ---------------------------------------------------------------------- */
56 static void ir_handle_key(struct bttv *btv)
58 struct card_ir *ir = btv->remote;
62 gpio = bttv_gpio_read(&btv->c);
64 if (ir->last_gpio == gpio)
70 data = ir_extract_bits(gpio, ir->mask_keycode);
71 dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
73 ir->polling ? "poll" : "irq",
74 (gpio & ir->mask_keydown) ? " down" : "",
75 (gpio & ir->mask_keyup) ? " up" : "");
77 if ((ir->mask_keydown && (0 != (gpio & ir->mask_keydown))) ||
78 (ir->mask_keyup && (0 == (gpio & ir->mask_keyup)))) {
79 ir_input_keydown(ir->dev, &ir->ir, data);
81 /* HACK: Probably, ir->mask_keydown is missing
83 if (btv->c.type == BTTV_BOARD_WINFAST2000)
84 ir_input_keydown(ir->dev, &ir->ir, data);
86 ir_input_nokey(ir->dev,&ir->ir);
91 static void ir_enltv_handle_key(struct bttv *btv)
93 struct card_ir *ir = btv->remote;
94 u32 gpio, data, keyup;
97 gpio = bttv_gpio_read(&btv->c);
100 data = ir_extract_bits(gpio, ir->mask_keycode);
102 /* Check if it is keyup */
103 keyup = (gpio & ir->mask_keyup) ? 1 << 31 : 0;
105 if ((ir->last_gpio & 0x7f) != data) {
106 dprintk(KERN_INFO DEVNAME ": gpio=0x%x code=%d | %s\n",
108 (gpio & ir->mask_keyup) ? " up" : "up/down");
110 ir_input_keydown(ir->dev, &ir->ir, data);
112 ir_input_nokey(ir->dev, &ir->ir);
114 if ((ir->last_gpio & 1 << 31) == keyup)
117 dprintk(KERN_INFO DEVNAME ":(cnt) gpio=0x%x code=%d | %s\n",
119 (gpio & ir->mask_keyup) ? " up" : "down");
122 ir_input_nokey(ir->dev, &ir->ir);
124 ir_input_keydown(ir->dev, &ir->ir, data);
127 ir->last_gpio = data | keyup;
130 void bttv_input_irq(struct bttv *btv)
132 struct card_ir *ir = btv->remote;
138 static void bttv_input_timer(unsigned long data)
140 struct bttv *btv = (struct bttv*)data;
141 struct card_ir *ir = btv->remote;
143 if (btv->c.type == BTTV_BOARD_ENLTV_FM_2)
144 ir_enltv_handle_key(btv);
147 mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
150 /* ---------------------------------------------------------------*/
152 static int bttv_rc5_irq(struct bttv *btv)
154 struct card_ir *ir = btv->remote;
158 unsigned long current_jiffies;
161 gpio = bttv_gpio_read(&btv->c);
167 /* get time of bit */
168 current_jiffies = jiffies;
169 do_gettimeofday(&tv);
171 /* avoid overflow with gap >1s */
172 if (tv.tv_sec - ir->base_time.tv_sec > 1) {
175 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
176 tv.tv_usec - ir->base_time.tv_usec;
179 /* active code => add bit */
181 /* only if in the code (otherwise spurious IRQ or timer
183 if (ir->last_bit < 28) {
184 ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
186 ir->code |= 1 << ir->last_bit;
188 /* starting new code */
195 mod_timer(&ir->timer_end,
196 current_jiffies + msecs_to_jiffies(30));
199 /* toggle GPIO pin 4 to reset the irq */
200 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
201 bttv_gpio_write(&btv->c, gpio | (1 << 4));
205 /* ---------------------------------------------------------------------- */
207 static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
210 setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
211 ir->timer.expires = jiffies + msecs_to_jiffies(1000);
212 add_timer(&ir->timer);
213 } else if (ir->rc5_gpio) {
214 /* set timer_end for code completion */
215 init_timer(&ir->timer_end);
216 ir->timer_end.function = ir_rc5_timer_end;
217 ir->timer_end.data = (unsigned long)ir;
219 init_timer(&ir->timer_keyup);
220 ir->timer_keyup.function = ir_rc5_timer_keyup;
221 ir->timer_keyup.data = (unsigned long)ir;
225 ir->rc5_key_timeout = ir_rc5_key_timeout;
226 ir->rc5_remote_gap = ir_rc5_remote_gap;
230 static void bttv_ir_stop(struct bttv *btv)
232 if (btv->remote->polling) {
233 del_timer_sync(&btv->remote->timer);
234 flush_scheduled_work();
237 if (btv->remote->rc5_gpio) {
240 del_timer_sync(&btv->remote->timer_end);
241 flush_scheduled_work();
243 gpio = bttv_gpio_read(&btv->c);
244 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
248 int bttv_input_init(struct bttv *btv)
251 char *ir_codes = NULL;
252 struct input_dev *input_dev;
253 u64 ir_type = IR_TYPE_OTHER;
256 if (!btv->has_remote)
259 ir = kzalloc(sizeof(*ir),GFP_KERNEL);
260 input_dev = input_allocate_device();
261 if (!ir || !input_dev)
264 /* detect & configure */
265 switch (btv->c.type) {
266 case BTTV_BOARD_AVERMEDIA:
267 case BTTV_BOARD_AVPHONE98:
268 case BTTV_BOARD_AVERMEDIA98:
269 ir_codes = RC_MAP_AVERMEDIA;
270 ir->mask_keycode = 0xf88000;
271 ir->mask_keydown = 0x010000;
272 ir->polling = 50; // ms
275 case BTTV_BOARD_AVDVBT_761:
276 case BTTV_BOARD_AVDVBT_771:
277 ir_codes = RC_MAP_AVERMEDIA_DVBT;
278 ir->mask_keycode = 0x0f00c0;
279 ir->mask_keydown = 0x000020;
280 ir->polling = 50; // ms
283 case BTTV_BOARD_PXELVWPLTVPAK:
284 ir_codes = RC_MAP_PIXELVIEW;
285 ir->mask_keycode = 0x003e00;
286 ir->mask_keyup = 0x010000;
287 ir->polling = 50; // ms
289 case BTTV_BOARD_PV_M4900:
290 case BTTV_BOARD_PV_BT878P_9B:
291 case BTTV_BOARD_PV_BT878P_PLUS:
292 ir_codes = RC_MAP_PIXELVIEW;
293 ir->mask_keycode = 0x001f00;
294 ir->mask_keyup = 0x008000;
295 ir->polling = 50; // ms
298 case BTTV_BOARD_WINFAST2000:
299 ir_codes = RC_MAP_WINFAST;
300 ir->mask_keycode = 0x1f8;
302 case BTTV_BOARD_MAGICTVIEW061:
303 case BTTV_BOARD_MAGICTVIEW063:
304 ir_codes = RC_MAP_WINFAST;
305 ir->mask_keycode = 0x0008e000;
306 ir->mask_keydown = 0x00200000;
308 case BTTV_BOARD_APAC_VIEWCOMP:
309 ir_codes = RC_MAP_APAC_VIEWCOMP;
310 ir->mask_keycode = 0x001f00;
311 ir->mask_keyup = 0x008000;
312 ir->polling = 50; // ms
314 case BTTV_BOARD_ASKEY_CPH03X:
315 case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
316 case BTTV_BOARD_CONTVFMI:
317 ir_codes = RC_MAP_PIXELVIEW;
318 ir->mask_keycode = 0x001F00;
319 ir->mask_keyup = 0x006000;
320 ir->polling = 50; // ms
322 case BTTV_BOARD_NEBULA_DIGITV:
323 ir_codes = RC_MAP_NEBULA;
324 btv->custom_irq = bttv_rc5_irq;
327 case BTTV_BOARD_MACHTV_MAGICTV:
328 ir_codes = RC_MAP_APAC_VIEWCOMP;
329 ir->mask_keycode = 0x001F00;
330 ir->mask_keyup = 0x004000;
331 ir->polling = 50; /* ms */
333 case BTTV_BOARD_KOZUMI_KTV_01C:
334 ir_codes = RC_MAP_PCTV_SEDNA;
335 ir->mask_keycode = 0x001f00;
336 ir->mask_keyup = 0x006000;
337 ir->polling = 50; /* ms */
339 case BTTV_BOARD_ENLTV_FM_2:
340 ir_codes = RC_MAP_ENCORE_ENLTV2;
341 ir->mask_keycode = 0x00fd00;
342 ir->mask_keyup = 0x000080;
343 ir->polling = 1; /* ms */
344 ir->last_gpio = ir_extract_bits(bttv_gpio_read(&btv->c),
348 if (NULL == ir_codes) {
349 dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
356 /* enable remote irq */
357 bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
358 gpio = bttv_gpio_read(&btv->c);
359 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
360 bttv_gpio_write(&btv->c, gpio | (1 << 4));
362 /* init hardware-specific stuff */
363 bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
366 /* init input device */
369 snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
371 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
372 pci_name(btv->c.pci));
374 err = ir_input_init(input_dev, &ir->ir, ir_type);
378 input_dev->name = ir->name;
379 input_dev->phys = ir->phys;
380 input_dev->id.bustype = BUS_PCI;
381 input_dev->id.version = 1;
382 if (btv->c.pci->subsystem_vendor) {
383 input_dev->id.vendor = btv->c.pci->subsystem_vendor;
384 input_dev->id.product = btv->c.pci->subsystem_device;
386 input_dev->id.vendor = btv->c.pci->vendor;
387 input_dev->id.product = btv->c.pci->device;
389 input_dev->dev.parent = &btv->c.pci->dev;
392 bttv_ir_start(btv, ir);
395 err = ir_input_register(btv->remote->dev, ir_codes, NULL, MODULE_NAME);
399 /* the remote isn't as bouncy as a keyboard */
400 ir->dev->rep[REP_DELAY] = repeat_delay;
401 ir->dev->rep[REP_PERIOD] = repeat_period;
413 void bttv_input_fini(struct bttv *btv)
415 if (btv->remote == NULL)
419 ir_input_unregister(btv->remote->dev);