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);
35 static int ir_rc5_remote_gap = 885;
36 module_param(ir_rc5_remote_gap, int, 0644);
39 #define dprintk(arg...) do { \
44 #define DEVNAME "bttv-input"
46 #define MODULE_NAME "bttv"
48 /* ---------------------------------------------------------------------- */
50 static void ir_handle_key(struct bttv *btv)
52 struct card_ir *ir = btv->remote;
56 gpio = bttv_gpio_read(&btv->c);
58 if (ir->last_gpio == gpio)
64 data = ir_extract_bits(gpio, ir->mask_keycode);
65 dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
67 ir->polling ? "poll" : "irq",
68 (gpio & ir->mask_keydown) ? " down" : "",
69 (gpio & ir->mask_keyup) ? " up" : "");
71 if ((ir->mask_keydown && (gpio & ir->mask_keydown)) ||
72 (ir->mask_keyup && !(gpio & ir->mask_keyup))) {
73 ir_keydown_notimeout(ir->dev, data, 0);
75 /* HACK: Probably, ir->mask_keydown is missing
77 if (btv->c.type == BTTV_BOARD_WINFAST2000)
78 ir_keydown_notimeout(ir->dev, data, 0);
84 static void ir_enltv_handle_key(struct bttv *btv)
86 struct card_ir *ir = btv->remote;
87 u32 gpio, data, keyup;
90 gpio = bttv_gpio_read(&btv->c);
93 data = ir_extract_bits(gpio, ir->mask_keycode);
95 /* Check if it is keyup */
96 keyup = (gpio & ir->mask_keyup) ? 1 << 31 : 0;
98 if ((ir->last_gpio & 0x7f) != data) {
99 dprintk(KERN_INFO DEVNAME ": gpio=0x%x code=%d | %s\n",
101 (gpio & ir->mask_keyup) ? " up" : "up/down");
103 ir_keydown_notimeout(ir->dev, data, 0);
107 if ((ir->last_gpio & 1 << 31) == keyup)
110 dprintk(KERN_INFO DEVNAME ":(cnt) gpio=0x%x code=%d | %s\n",
112 (gpio & ir->mask_keyup) ? " up" : "down");
117 ir_keydown_notimeout(ir->dev, data, 0);
120 ir->last_gpio = data | keyup;
123 void bttv_input_irq(struct bttv *btv)
125 struct card_ir *ir = btv->remote;
131 static void bttv_input_timer(unsigned long data)
133 struct bttv *btv = (struct bttv*)data;
134 struct card_ir *ir = btv->remote;
136 if (btv->c.type == BTTV_BOARD_ENLTV_FM_2)
137 ir_enltv_handle_key(btv);
140 mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
143 /* ---------------------------------------------------------------*/
145 static int bttv_rc5_irq(struct bttv *btv)
147 struct card_ir *ir = btv->remote;
151 unsigned long current_jiffies;
154 gpio = bttv_gpio_read(&btv->c);
160 /* get time of bit */
161 current_jiffies = jiffies;
162 do_gettimeofday(&tv);
164 /* avoid overflow with gap >1s */
165 if (tv.tv_sec - ir->base_time.tv_sec > 1) {
168 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
169 tv.tv_usec - ir->base_time.tv_usec;
172 /* active code => add bit */
174 /* only if in the code (otherwise spurious IRQ or timer
176 if (ir->last_bit < 28) {
177 ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
179 ir->code |= 1 << ir->last_bit;
181 /* starting new code */
188 mod_timer(&ir->timer_end,
189 current_jiffies + msecs_to_jiffies(30));
192 /* toggle GPIO pin 4 to reset the irq */
193 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
194 bttv_gpio_write(&btv->c, gpio | (1 << 4));
198 /* ---------------------------------------------------------------------- */
200 static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
203 setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
204 ir->timer.expires = jiffies + msecs_to_jiffies(1000);
205 add_timer(&ir->timer);
206 } else if (ir->rc5_gpio) {
207 /* set timer_end for code completion */
208 init_timer(&ir->timer_end);
209 ir->timer_end.function = ir_rc5_timer_end;
210 ir->timer_end.data = (unsigned long)ir;
214 ir->rc5_remote_gap = ir_rc5_remote_gap;
218 static void bttv_ir_stop(struct bttv *btv)
220 if (btv->remote->polling) {
221 del_timer_sync(&btv->remote->timer);
222 flush_scheduled_work();
225 if (btv->remote->rc5_gpio) {
228 del_timer_sync(&btv->remote->timer_end);
229 flush_scheduled_work();
231 gpio = bttv_gpio_read(&btv->c);
232 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
237 * Get_key functions used by I2C remotes
240 static int get_key_pv951(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
245 if (1 != i2c_master_recv(ir->c, &b, 1)) {
246 dprintk(KERN_INFO DEVNAME ": read error\n");
253 dprintk(KERN_INFO DEVNAME ": key %02x\n", b);
260 /* Instantiate the I2C IR receiver device, if present */
261 void __devinit init_bttv_i2c_ir(struct bttv *btv)
263 const unsigned short addr_list[] = {
264 0x1a, 0x18, 0x64, 0x30, 0x71,
267 struct i2c_board_info info;
269 if (0 != btv->i2c_rc)
272 memset(&info, 0, sizeof(struct i2c_board_info));
273 memset(&btv->init_data, 0, sizeof(btv->init_data));
274 strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
276 switch (btv->c.type) {
277 case BTTV_BOARD_PV951:
278 btv->init_data.name = "PV951";
279 btv->init_data.get_key = get_key_pv951;
280 btv->init_data.ir_codes = RC_MAP_PV951;
285 * The external IR receiver is at i2c address 0x34 (0x35 for
286 * reads). Future Hauppauge cards will have an internal
287 * receiver at 0x30 (0x31 for reads). In theory, both can be
288 * fitted, and Hauppauge suggest an external overrides an
290 * That's why we probe 0x1a (~0x34) first. CB
293 i2c_new_probed_device(&btv->c.i2c_adap, &info, addr_list, NULL);
297 if (btv->init_data.name)
298 info.platform_data = &btv->init_data;
299 i2c_new_device(&btv->c.i2c_adap, &info);
304 int __devexit fini_bttv_i2c(struct bttv *btv)
306 if (0 != btv->i2c_rc)
309 return i2c_del_adapter(&btv->c.i2c_adap);
312 int bttv_input_init(struct bttv *btv)
315 char *ir_codes = NULL;
319 if (!btv->has_remote)
322 ir = kzalloc(sizeof(*ir),GFP_KERNEL);
323 rc = rc_allocate_device();
327 /* detect & configure */
328 switch (btv->c.type) {
329 case BTTV_BOARD_AVERMEDIA:
330 case BTTV_BOARD_AVPHONE98:
331 case BTTV_BOARD_AVERMEDIA98:
332 ir_codes = RC_MAP_AVERMEDIA;
333 ir->mask_keycode = 0xf88000;
334 ir->mask_keydown = 0x010000;
335 ir->polling = 50; // ms
338 case BTTV_BOARD_AVDVBT_761:
339 case BTTV_BOARD_AVDVBT_771:
340 ir_codes = RC_MAP_AVERMEDIA_DVBT;
341 ir->mask_keycode = 0x0f00c0;
342 ir->mask_keydown = 0x000020;
343 ir->polling = 50; // ms
346 case BTTV_BOARD_PXELVWPLTVPAK:
347 ir_codes = RC_MAP_PIXELVIEW;
348 ir->mask_keycode = 0x003e00;
349 ir->mask_keyup = 0x010000;
350 ir->polling = 50; // ms
352 case BTTV_BOARD_PV_M4900:
353 case BTTV_BOARD_PV_BT878P_9B:
354 case BTTV_BOARD_PV_BT878P_PLUS:
355 ir_codes = RC_MAP_PIXELVIEW;
356 ir->mask_keycode = 0x001f00;
357 ir->mask_keyup = 0x008000;
358 ir->polling = 50; // ms
361 case BTTV_BOARD_WINFAST2000:
362 ir_codes = RC_MAP_WINFAST;
363 ir->mask_keycode = 0x1f8;
365 case BTTV_BOARD_MAGICTVIEW061:
366 case BTTV_BOARD_MAGICTVIEW063:
367 ir_codes = RC_MAP_WINFAST;
368 ir->mask_keycode = 0x0008e000;
369 ir->mask_keydown = 0x00200000;
371 case BTTV_BOARD_APAC_VIEWCOMP:
372 ir_codes = RC_MAP_APAC_VIEWCOMP;
373 ir->mask_keycode = 0x001f00;
374 ir->mask_keyup = 0x008000;
375 ir->polling = 50; // ms
377 case BTTV_BOARD_ASKEY_CPH03X:
378 case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
379 case BTTV_BOARD_CONTVFMI:
380 ir_codes = RC_MAP_PIXELVIEW;
381 ir->mask_keycode = 0x001F00;
382 ir->mask_keyup = 0x006000;
383 ir->polling = 50; // ms
385 case BTTV_BOARD_NEBULA_DIGITV:
386 ir_codes = RC_MAP_NEBULA;
387 btv->custom_irq = bttv_rc5_irq;
390 case BTTV_BOARD_MACHTV_MAGICTV:
391 ir_codes = RC_MAP_APAC_VIEWCOMP;
392 ir->mask_keycode = 0x001F00;
393 ir->mask_keyup = 0x004000;
394 ir->polling = 50; /* ms */
396 case BTTV_BOARD_KOZUMI_KTV_01C:
397 ir_codes = RC_MAP_PCTV_SEDNA;
398 ir->mask_keycode = 0x001f00;
399 ir->mask_keyup = 0x006000;
400 ir->polling = 50; /* ms */
402 case BTTV_BOARD_ENLTV_FM_2:
403 ir_codes = RC_MAP_ENCORE_ENLTV2;
404 ir->mask_keycode = 0x00fd00;
405 ir->mask_keyup = 0x000080;
406 ir->polling = 1; /* ms */
407 ir->last_gpio = ir_extract_bits(bttv_gpio_read(&btv->c),
411 if (NULL == ir_codes) {
412 dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
419 /* enable remote irq */
420 bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
421 gpio = bttv_gpio_read(&btv->c);
422 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
423 bttv_gpio_write(&btv->c, gpio | (1 << 4));
425 /* init hardware-specific stuff */
426 bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
429 /* init input device */
432 snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
434 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
435 pci_name(btv->c.pci));
437 rc->input_name = ir->name;
438 rc->input_phys = ir->phys;
439 rc->input_id.bustype = BUS_PCI;
440 rc->input_id.version = 1;
441 if (btv->c.pci->subsystem_vendor) {
442 rc->input_id.vendor = btv->c.pci->subsystem_vendor;
443 rc->input_id.product = btv->c.pci->subsystem_device;
445 rc->input_id.vendor = btv->c.pci->vendor;
446 rc->input_id.product = btv->c.pci->device;
448 rc->dev.parent = &btv->c.pci->dev;
449 rc->map_name = ir_codes;
450 rc->driver_name = MODULE_NAME;
453 bttv_ir_start(btv, ir);
456 err = rc_register_device(rc);
471 void bttv_input_fini(struct bttv *btv)
473 if (btv->remote == NULL)
477 rc_unregister_device(btv->remote->dev);