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/moduleparam.h>
23 #include <linux/init.h>
24 #include <linux/delay.h>
25 #include <linux/interrupt.h>
26 #include <linux/input.h>
33 module_param(debug, int, 0644); /* debug level (0,1,2) */
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 int ir_rc5_remote_gap = 885;
40 module_param(ir_rc5_remote_gap, int, 0644);
41 int ir_rc5_key_timeout = 200;
42 module_param(ir_rc5_key_timeout, int, 0644);
44 #define DEVNAME "bttv-input"
46 /* ---------------------------------------------------------------------- */
48 static void ir_handle_key(struct bttv *btv)
50 struct card_ir *ir = btv->remote;
54 gpio = bttv_gpio_read(&btv->c);
56 if (ir->last_gpio == gpio)
62 data = ir_extract_bits(gpio, ir->mask_keycode);
63 dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
65 ir->polling ? "poll" : "irq",
66 (gpio & ir->mask_keydown) ? " down" : "",
67 (gpio & ir->mask_keyup) ? " up" : "");
69 if ((ir->mask_keydown && (0 != (gpio & ir->mask_keydown))) ||
70 (ir->mask_keyup && (0 == (gpio & ir->mask_keyup)))) {
71 ir_input_keydown(ir->dev,&ir->ir,data,data);
73 ir_input_nokey(ir->dev,&ir->ir);
78 void bttv_input_irq(struct bttv *btv)
80 struct card_ir *ir = btv->remote;
86 static void bttv_input_timer(unsigned long data)
88 struct bttv *btv = (struct bttv*)data;
89 struct card_ir *ir = btv->remote;
90 unsigned long timeout;
93 timeout = jiffies + (ir->polling * HZ / 1000);
94 mod_timer(&ir->timer, timeout);
97 /* ---------------------------------------------------------------*/
99 static int bttv_rc5_irq(struct bttv *btv)
101 struct card_ir *ir = btv->remote;
105 unsigned long current_jiffies, timeout;
108 gpio = bttv_gpio_read(&btv->c);
114 /* get time of bit */
115 current_jiffies = jiffies;
116 do_gettimeofday(&tv);
118 /* avoid overflow with gap >1s */
119 if (tv.tv_sec - ir->base_time.tv_sec > 1) {
122 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
123 tv.tv_usec - ir->base_time.tv_usec;
126 /* active code => add bit */
128 /* only if in the code (otherwise spurious IRQ or timer
130 if (ir->last_bit < 28) {
131 ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
133 ir->code |= 1 << ir->last_bit;
135 /* starting new code */
142 timeout = current_jiffies + (500 + 30 * HZ) / 1000;
143 mod_timer(&ir->timer_end, timeout);
146 /* toggle GPIO pin 4 to reset the irq */
147 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
148 bttv_gpio_write(&btv->c, gpio | (1 << 4));
152 /* ---------------------------------------------------------------------- */
154 static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
157 init_timer(&ir->timer);
158 ir->timer.function = bttv_input_timer;
159 ir->timer.data = (unsigned long)btv;
160 ir->timer.expires = jiffies + HZ;
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;
168 init_timer(&ir->timer_keyup);
169 ir->timer_keyup.function = ir_rc5_timer_keyup;
170 ir->timer_keyup.data = (unsigned long)ir;
174 ir->rc5_key_timeout = ir_rc5_key_timeout;
175 ir->rc5_remote_gap = ir_rc5_remote_gap;
179 static void bttv_ir_stop(struct bttv *btv)
181 if (btv->remote->polling) {
182 del_timer_sync(&btv->remote->timer);
183 flush_scheduled_work();
186 if (btv->remote->rc5_gpio) {
189 del_timer_sync(&btv->remote->timer_end);
190 flush_scheduled_work();
192 gpio = bttv_gpio_read(&btv->c);
193 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
197 int bttv_input_init(struct bttv *btv)
200 IR_KEYTAB_TYPE *ir_codes = NULL;
201 struct input_dev *input_dev;
202 int ir_type = IR_TYPE_OTHER;
205 if (!btv->has_remote)
208 ir = kzalloc(sizeof(*ir),GFP_KERNEL);
209 input_dev = input_allocate_device();
210 if (!ir || !input_dev)
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
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
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
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
247 case BTTV_BOARD_WINFAST2000:
248 ir_codes = ir_codes_winfast;
249 ir->mask_keycode = 0x1f8;
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;
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
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
270 case BTTV_BOARD_NEBULA_DIGITV:
271 ir_codes = ir_codes_nebula;
272 btv->custom_irq = bttv_rc5_irq;
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 */
282 if (NULL == ir_codes) {
283 dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
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));
296 /* init hardware-specific stuff */
297 bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
300 /* init input device */
303 snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
305 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
306 pci_name(btv->c.pci));
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;
317 input_dev->id.vendor = btv->c.pci->vendor;
318 input_dev->id.product = btv->c.pci->device;
320 input_dev->cdev.dev = &btv->c.pci->dev;
323 bttv_ir_start(btv, ir);
326 err = input_register_device(btv->remote->dev);
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;
340 input_free_device(input_dev);
345 void bttv_input_fini(struct bttv *btv)
347 if (btv->remote == NULL)
351 input_unregister_device(btv->remote->dev);