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);
235 if (btv->remote->rc5_gpio) {
238 del_timer_sync(&btv->remote->timer_end);
240 gpio = bttv_gpio_read(&btv->c);
241 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
246 * Get_key functions used by I2C remotes
249 static int get_key_pv951(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
254 if (1 != i2c_master_recv(ir->c, &b, 1)) {
255 dprintk(KERN_INFO DEVNAME ": read error\n");
262 dprintk(KERN_INFO DEVNAME ": key %02x\n", b);
269 /* Instantiate the I2C IR receiver device, if present */
270 void __devinit init_bttv_i2c_ir(struct bttv *btv)
272 const unsigned short addr_list[] = {
273 0x1a, 0x18, 0x64, 0x30, 0x71,
276 struct i2c_board_info info;
278 if (0 != btv->i2c_rc)
281 memset(&info, 0, sizeof(struct i2c_board_info));
282 memset(&btv->init_data, 0, sizeof(btv->init_data));
283 strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
285 switch (btv->c.type) {
286 case BTTV_BOARD_PV951:
287 btv->init_data.name = "PV951";
288 btv->init_data.get_key = get_key_pv951;
289 btv->init_data.ir_codes = RC_MAP_PV951;
290 btv->init_data.type = IR_TYPE_OTHER;
295 * The external IR receiver is at i2c address 0x34 (0x35 for
296 * reads). Future Hauppauge cards will have an internal
297 * receiver at 0x30 (0x31 for reads). In theory, both can be
298 * fitted, and Hauppauge suggest an external overrides an
300 * That's why we probe 0x1a (~0x34) first. CB
303 i2c_new_probed_device(&btv->c.i2c_adap, &info, addr_list, NULL);
307 if (btv->init_data.name)
308 info.platform_data = &btv->init_data;
309 i2c_new_device(&btv->c.i2c_adap, &info);
314 int __devexit fini_bttv_i2c(struct bttv *btv)
316 if (0 != btv->i2c_rc)
319 return i2c_del_adapter(&btv->c.i2c_adap);
322 int bttv_input_init(struct bttv *btv)
325 char *ir_codes = NULL;
326 struct input_dev *input_dev;
327 u64 ir_type = IR_TYPE_OTHER;
330 if (!btv->has_remote)
333 ir = kzalloc(sizeof(*ir),GFP_KERNEL);
334 input_dev = input_allocate_device();
335 if (!ir || !input_dev)
338 /* detect & configure */
339 switch (btv->c.type) {
340 case BTTV_BOARD_AVERMEDIA:
341 case BTTV_BOARD_AVPHONE98:
342 case BTTV_BOARD_AVERMEDIA98:
343 ir_codes = RC_MAP_AVERMEDIA;
344 ir->mask_keycode = 0xf88000;
345 ir->mask_keydown = 0x010000;
346 ir->polling = 50; // ms
349 case BTTV_BOARD_AVDVBT_761:
350 case BTTV_BOARD_AVDVBT_771:
351 ir_codes = RC_MAP_AVERMEDIA_DVBT;
352 ir->mask_keycode = 0x0f00c0;
353 ir->mask_keydown = 0x000020;
354 ir->polling = 50; // ms
357 case BTTV_BOARD_PXELVWPLTVPAK:
358 ir_codes = RC_MAP_PIXELVIEW;
359 ir->mask_keycode = 0x003e00;
360 ir->mask_keyup = 0x010000;
361 ir->polling = 50; // ms
363 case BTTV_BOARD_PV_M4900:
364 case BTTV_BOARD_PV_BT878P_9B:
365 case BTTV_BOARD_PV_BT878P_PLUS:
366 ir_codes = RC_MAP_PIXELVIEW;
367 ir->mask_keycode = 0x001f00;
368 ir->mask_keyup = 0x008000;
369 ir->polling = 50; // ms
372 case BTTV_BOARD_WINFAST2000:
373 ir_codes = RC_MAP_WINFAST;
374 ir->mask_keycode = 0x1f8;
376 case BTTV_BOARD_MAGICTVIEW061:
377 case BTTV_BOARD_MAGICTVIEW063:
378 ir_codes = RC_MAP_WINFAST;
379 ir->mask_keycode = 0x0008e000;
380 ir->mask_keydown = 0x00200000;
382 case BTTV_BOARD_APAC_VIEWCOMP:
383 ir_codes = RC_MAP_APAC_VIEWCOMP;
384 ir->mask_keycode = 0x001f00;
385 ir->mask_keyup = 0x008000;
386 ir->polling = 50; // ms
388 case BTTV_BOARD_ASKEY_CPH03X:
389 case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
390 case BTTV_BOARD_CONTVFMI:
391 ir_codes = RC_MAP_PIXELVIEW;
392 ir->mask_keycode = 0x001F00;
393 ir->mask_keyup = 0x006000;
394 ir->polling = 50; // ms
396 case BTTV_BOARD_NEBULA_DIGITV:
397 ir_codes = RC_MAP_NEBULA;
398 btv->custom_irq = bttv_rc5_irq;
401 case BTTV_BOARD_MACHTV_MAGICTV:
402 ir_codes = RC_MAP_APAC_VIEWCOMP;
403 ir->mask_keycode = 0x001F00;
404 ir->mask_keyup = 0x004000;
405 ir->polling = 50; /* ms */
407 case BTTV_BOARD_KOZUMI_KTV_01C:
408 ir_codes = RC_MAP_PCTV_SEDNA;
409 ir->mask_keycode = 0x001f00;
410 ir->mask_keyup = 0x006000;
411 ir->polling = 50; /* ms */
413 case BTTV_BOARD_ENLTV_FM_2:
414 ir_codes = RC_MAP_ENCORE_ENLTV2;
415 ir->mask_keycode = 0x00fd00;
416 ir->mask_keyup = 0x000080;
417 ir->polling = 1; /* ms */
418 ir->last_gpio = ir_extract_bits(bttv_gpio_read(&btv->c),
422 if (NULL == ir_codes) {
423 dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
430 /* enable remote irq */
431 bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
432 gpio = bttv_gpio_read(&btv->c);
433 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
434 bttv_gpio_write(&btv->c, gpio | (1 << 4));
436 /* init hardware-specific stuff */
437 bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
440 /* init input device */
443 snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
445 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
446 pci_name(btv->c.pci));
448 err = ir_input_init(input_dev, &ir->ir, ir_type);
452 input_dev->name = ir->name;
453 input_dev->phys = ir->phys;
454 input_dev->id.bustype = BUS_PCI;
455 input_dev->id.version = 1;
456 if (btv->c.pci->subsystem_vendor) {
457 input_dev->id.vendor = btv->c.pci->subsystem_vendor;
458 input_dev->id.product = btv->c.pci->subsystem_device;
460 input_dev->id.vendor = btv->c.pci->vendor;
461 input_dev->id.product = btv->c.pci->device;
463 input_dev->dev.parent = &btv->c.pci->dev;
466 bttv_ir_start(btv, ir);
469 err = ir_input_register(btv->remote->dev, ir_codes, NULL, MODULE_NAME);
473 /* the remote isn't as bouncy as a keyboard */
474 ir->dev->rep[REP_DELAY] = repeat_delay;
475 ir->dev->rep[REP_PERIOD] = repeat_period;
487 void bttv_input_fini(struct bttv *btv)
489 if (btv->remote == NULL)
493 ir_input_unregister(btv->remote->dev);