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 /* ---------------------------------------------------------------------- */
54 static void ir_handle_key(struct bttv *btv)
56 struct card_ir *ir = btv->remote;
60 gpio = bttv_gpio_read(&btv->c);
62 if (ir->last_gpio == gpio)
68 data = ir_extract_bits(gpio, ir->mask_keycode);
69 dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
71 ir->polling ? "poll" : "irq",
72 (gpio & ir->mask_keydown) ? " down" : "",
73 (gpio & ir->mask_keyup) ? " up" : "");
75 if ((ir->mask_keydown && (0 != (gpio & ir->mask_keydown))) ||
76 (ir->mask_keyup && (0 == (gpio & ir->mask_keyup)))) {
77 ir_input_keydown(ir->dev, &ir->ir, data);
79 /* HACK: Probably, ir->mask_keydown is missing
81 if (btv->c.type == BTTV_BOARD_WINFAST2000)
82 ir_input_keydown(ir->dev, &ir->ir, data);
84 ir_input_nokey(ir->dev,&ir->ir);
89 static void ir_enltv_handle_key(struct bttv *btv)
91 struct card_ir *ir = btv->remote;
92 u32 gpio, data, keyup;
95 gpio = bttv_gpio_read(&btv->c);
98 data = ir_extract_bits(gpio, ir->mask_keycode);
100 /* Check if it is keyup */
101 keyup = (gpio & ir->mask_keyup) ? 1 << 31 : 0;
103 if ((ir->last_gpio & 0x7f) != data) {
104 dprintk(KERN_INFO DEVNAME ": gpio=0x%x code=%d | %s\n",
106 (gpio & ir->mask_keyup) ? " up" : "up/down");
108 ir_input_keydown(ir->dev, &ir->ir, data);
110 ir_input_nokey(ir->dev, &ir->ir);
112 if ((ir->last_gpio & 1 << 31) == keyup)
115 dprintk(KERN_INFO DEVNAME ":(cnt) gpio=0x%x code=%d | %s\n",
117 (gpio & ir->mask_keyup) ? " up" : "down");
120 ir_input_nokey(ir->dev, &ir->ir);
122 ir_input_keydown(ir->dev, &ir->ir, data);
125 ir->last_gpio = data | keyup;
128 void bttv_input_irq(struct bttv *btv)
130 struct card_ir *ir = btv->remote;
136 static void bttv_input_timer(unsigned long data)
138 struct bttv *btv = (struct bttv*)data;
139 struct card_ir *ir = btv->remote;
141 if (btv->c.type == BTTV_BOARD_ENLTV_FM_2)
142 ir_enltv_handle_key(btv);
145 mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
148 /* ---------------------------------------------------------------*/
150 static int bttv_rc5_irq(struct bttv *btv)
152 struct card_ir *ir = btv->remote;
156 unsigned long current_jiffies;
159 gpio = bttv_gpio_read(&btv->c);
165 /* get time of bit */
166 current_jiffies = jiffies;
167 do_gettimeofday(&tv);
169 /* avoid overflow with gap >1s */
170 if (tv.tv_sec - ir->base_time.tv_sec > 1) {
173 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
174 tv.tv_usec - ir->base_time.tv_usec;
177 /* active code => add bit */
179 /* only if in the code (otherwise spurious IRQ or timer
181 if (ir->last_bit < 28) {
182 ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
184 ir->code |= 1 << ir->last_bit;
186 /* starting new code */
193 mod_timer(&ir->timer_end,
194 current_jiffies + msecs_to_jiffies(30));
197 /* toggle GPIO pin 4 to reset the irq */
198 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
199 bttv_gpio_write(&btv->c, gpio | (1 << 4));
203 /* ---------------------------------------------------------------------- */
205 static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
208 setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
209 ir->timer.expires = jiffies + msecs_to_jiffies(1000);
210 add_timer(&ir->timer);
211 } else if (ir->rc5_gpio) {
212 /* set timer_end for code completion */
213 init_timer(&ir->timer_end);
214 ir->timer_end.function = ir_rc5_timer_end;
215 ir->timer_end.data = (unsigned long)ir;
217 init_timer(&ir->timer_keyup);
218 ir->timer_keyup.function = ir_rc5_timer_keyup;
219 ir->timer_keyup.data = (unsigned long)ir;
223 ir->rc5_key_timeout = ir_rc5_key_timeout;
224 ir->rc5_remote_gap = ir_rc5_remote_gap;
228 static void bttv_ir_stop(struct bttv *btv)
230 if (btv->remote->polling) {
231 del_timer_sync(&btv->remote->timer);
232 flush_scheduled_work();
235 if (btv->remote->rc5_gpio) {
238 del_timer_sync(&btv->remote->timer_end);
239 flush_scheduled_work();
241 gpio = bttv_gpio_read(&btv->c);
242 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
246 int bttv_input_init(struct bttv *btv)
249 struct ir_scancode_table *ir_codes = NULL;
250 struct input_dev *input_dev;
251 u64 ir_type = IR_TYPE_OTHER;
254 if (!btv->has_remote)
257 ir = kzalloc(sizeof(*ir),GFP_KERNEL);
258 input_dev = input_allocate_device();
259 if (!ir || !input_dev)
262 /* detect & configure */
263 switch (btv->c.type) {
264 case BTTV_BOARD_AVERMEDIA:
265 case BTTV_BOARD_AVPHONE98:
266 case BTTV_BOARD_AVERMEDIA98:
267 ir_codes = &ir_codes_avermedia_table;
268 ir->mask_keycode = 0xf88000;
269 ir->mask_keydown = 0x010000;
270 ir->polling = 50; // ms
273 case BTTV_BOARD_AVDVBT_761:
274 case BTTV_BOARD_AVDVBT_771:
275 ir_codes = &ir_codes_avermedia_dvbt_table;
276 ir->mask_keycode = 0x0f00c0;
277 ir->mask_keydown = 0x000020;
278 ir->polling = 50; // ms
281 case BTTV_BOARD_PXELVWPLTVPAK:
282 ir_codes = &ir_codes_pixelview_table;
283 ir->mask_keycode = 0x003e00;
284 ir->mask_keyup = 0x010000;
285 ir->polling = 50; // ms
287 case BTTV_BOARD_PV_M4900:
288 case BTTV_BOARD_PV_BT878P_9B:
289 case BTTV_BOARD_PV_BT878P_PLUS:
290 ir_codes = &ir_codes_pixelview_table;
291 ir->mask_keycode = 0x001f00;
292 ir->mask_keyup = 0x008000;
293 ir->polling = 50; // ms
296 case BTTV_BOARD_WINFAST2000:
297 ir_codes = &ir_codes_winfast_table;
298 ir->mask_keycode = 0x1f8;
300 case BTTV_BOARD_MAGICTVIEW061:
301 case BTTV_BOARD_MAGICTVIEW063:
302 ir_codes = &ir_codes_winfast_table;
303 ir->mask_keycode = 0x0008e000;
304 ir->mask_keydown = 0x00200000;
306 case BTTV_BOARD_APAC_VIEWCOMP:
307 ir_codes = &ir_codes_apac_viewcomp_table;
308 ir->mask_keycode = 0x001f00;
309 ir->mask_keyup = 0x008000;
310 ir->polling = 50; // ms
312 case BTTV_BOARD_ASKEY_CPH03X:
313 case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
314 case BTTV_BOARD_CONTVFMI:
315 ir_codes = &ir_codes_pixelview_table;
316 ir->mask_keycode = 0x001F00;
317 ir->mask_keyup = 0x006000;
318 ir->polling = 50; // ms
320 case BTTV_BOARD_NEBULA_DIGITV:
321 ir_codes = &ir_codes_nebula_table;
322 btv->custom_irq = bttv_rc5_irq;
325 case BTTV_BOARD_MACHTV_MAGICTV:
326 ir_codes = &ir_codes_apac_viewcomp_table;
327 ir->mask_keycode = 0x001F00;
328 ir->mask_keyup = 0x004000;
329 ir->polling = 50; /* ms */
331 case BTTV_BOARD_KOZUMI_KTV_01C:
332 ir_codes = &ir_codes_pctv_sedna_table;
333 ir->mask_keycode = 0x001f00;
334 ir->mask_keyup = 0x006000;
335 ir->polling = 50; /* ms */
337 case BTTV_BOARD_ENLTV_FM_2:
338 ir_codes = &ir_codes_encore_enltv2_table;
339 ir->mask_keycode = 0x00fd00;
340 ir->mask_keyup = 0x000080;
341 ir->polling = 1; /* ms */
342 ir->last_gpio = ir_extract_bits(bttv_gpio_read(&btv->c),
346 if (NULL == ir_codes) {
347 dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
354 /* enable remote irq */
355 bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
356 gpio = bttv_gpio_read(&btv->c);
357 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
358 bttv_gpio_write(&btv->c, gpio | (1 << 4));
360 /* init hardware-specific stuff */
361 bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
364 /* init input device */
367 snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
369 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
370 pci_name(btv->c.pci));
372 err = ir_input_init(input_dev, &ir->ir, ir_type);
376 input_dev->name = ir->name;
377 input_dev->phys = ir->phys;
378 input_dev->id.bustype = BUS_PCI;
379 input_dev->id.version = 1;
380 if (btv->c.pci->subsystem_vendor) {
381 input_dev->id.vendor = btv->c.pci->subsystem_vendor;
382 input_dev->id.product = btv->c.pci->subsystem_device;
384 input_dev->id.vendor = btv->c.pci->vendor;
385 input_dev->id.product = btv->c.pci->device;
387 input_dev->dev.parent = &btv->c.pci->dev;
390 bttv_ir_start(btv, ir);
393 err = ir_input_register(btv->remote->dev, ir_codes, NULL);
397 /* the remote isn't as bouncy as a keyboard */
398 ir->dev->rep[REP_DELAY] = repeat_delay;
399 ir->dev->rep[REP_PERIOD] = repeat_period;
411 void bttv_input_fini(struct bttv *btv)
413 if (btv->remote == NULL)
417 ir_input_unregister(btv->remote->dev);