Merge branch 'smsc47b397-new-id' into release
[linux-2.6] / drivers / media / video / bt8xx / bttv-input.c
1 /*
2  *
3  * Copyright (c) 2003 Gerd Knorr
4  * Copyright (c) 2003 Pavel Machek
5  *
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.
10  *
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.
15  *
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
19  */
20
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
27 #include "bttv.h"
28 #include "bttvp.h"
29
30
31 static int debug;
32 module_param(debug, int, 0644);    /* debug level (0,1,2) */
33 static int repeat_delay = 500;
34 module_param(repeat_delay, int, 0644);
35 static int repeat_period = 33;
36 module_param(repeat_period, int, 0644);
37
38 static int ir_rc5_remote_gap = 885;
39 module_param(ir_rc5_remote_gap, int, 0644);
40 static int ir_rc5_key_timeout = 200;
41 module_param(ir_rc5_key_timeout, int, 0644);
42
43 #define DEVNAME "bttv-input"
44
45 /* ---------------------------------------------------------------------- */
46
47 static void ir_handle_key(struct bttv *btv)
48 {
49         struct card_ir *ir = btv->remote;
50         u32 gpio,data;
51
52         /* read gpio value */
53         gpio = bttv_gpio_read(&btv->c);
54         if (ir->polling) {
55                 if (ir->last_gpio == gpio)
56                         return;
57                 ir->last_gpio = gpio;
58         }
59
60         /* extract data */
61         data = ir_extract_bits(gpio, ir->mask_keycode);
62         dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
63                 gpio, data,
64                 ir->polling               ? "poll"  : "irq",
65                 (gpio & ir->mask_keydown) ? " down" : "",
66                 (gpio & ir->mask_keyup)   ? " up"   : "");
67
68         if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
69             (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
70                 ir_input_keydown(ir->dev,&ir->ir,data,data);
71         } else {
72                 /* HACK: Probably, ir->mask_keydown is missing
73                    for this board */
74                 if (btv->c.type == BTTV_BOARD_WINFAST2000)
75                         ir_input_keydown(ir->dev, &ir->ir, data, data);
76
77                 ir_input_nokey(ir->dev,&ir->ir);
78         }
79
80 }
81
82 void bttv_input_irq(struct bttv *btv)
83 {
84         struct card_ir *ir = btv->remote;
85
86         if (!ir->polling)
87                 ir_handle_key(btv);
88 }
89
90 static void bttv_input_timer(unsigned long data)
91 {
92         struct bttv *btv = (struct bttv*)data;
93         struct card_ir *ir = btv->remote;
94
95         ir_handle_key(btv);
96         mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
97 }
98
99 /* ---------------------------------------------------------------*/
100
101 static int bttv_rc5_irq(struct bttv *btv)
102 {
103         struct card_ir *ir = btv->remote;
104         struct timeval tv;
105         u32 gpio;
106         u32 gap;
107         unsigned long current_jiffies;
108
109         /* read gpio port */
110         gpio = bttv_gpio_read(&btv->c);
111
112         /* remote IRQ? */
113         if (!(gpio & 0x20))
114                 return 0;
115
116         /* get time of bit */
117         current_jiffies = jiffies;
118         do_gettimeofday(&tv);
119
120         /* avoid overflow with gap >1s */
121         if (tv.tv_sec - ir->base_time.tv_sec > 1) {
122                 gap = 200000;
123         } else {
124                 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
125                     tv.tv_usec - ir->base_time.tv_usec;
126         }
127
128         /* active code => add bit */
129         if (ir->active) {
130                 /* only if in the code (otherwise spurious IRQ or timer
131                    late) */
132                 if (ir->last_bit < 28) {
133                         ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
134                             ir_rc5_remote_gap;
135                         ir->code |= 1 << ir->last_bit;
136                 }
137                 /* starting new code */
138         } else {
139                 ir->active = 1;
140                 ir->code = 0;
141                 ir->base_time = tv;
142                 ir->last_bit = 0;
143
144                 mod_timer(&ir->timer_end,
145                           current_jiffies + msecs_to_jiffies(30));
146         }
147
148         /* toggle GPIO pin 4 to reset the irq */
149         bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
150         bttv_gpio_write(&btv->c, gpio | (1 << 4));
151         return 1;
152 }
153
154 /* ---------------------------------------------------------------------- */
155
156 static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
157 {
158         if (ir->polling) {
159                 setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
160                 ir->timer.expires  = jiffies + msecs_to_jiffies(1000);
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;
167
168                 init_timer(&ir->timer_keyup);
169                 ir->timer_keyup.function = ir_rc5_timer_keyup;
170                 ir->timer_keyup.data = (unsigned long)ir;
171                 ir->shift_by = 1;
172                 ir->start = 3;
173                 ir->addr = 0x0;
174                 ir->rc5_key_timeout = ir_rc5_key_timeout;
175                 ir->rc5_remote_gap = ir_rc5_remote_gap;
176         }
177 }
178
179 static void bttv_ir_stop(struct bttv *btv)
180 {
181         if (btv->remote->polling) {
182                 del_timer_sync(&btv->remote->timer);
183                 flush_scheduled_work();
184         }
185
186         if (btv->remote->rc5_gpio) {
187                 u32 gpio;
188
189                 del_timer_sync(&btv->remote->timer_end);
190                 flush_scheduled_work();
191
192                 gpio = bttv_gpio_read(&btv->c);
193                 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
194         }
195 }
196
197 int bttv_input_init(struct bttv *btv)
198 {
199         struct card_ir *ir;
200         IR_KEYTAB_TYPE *ir_codes = NULL;
201         struct input_dev *input_dev;
202         int ir_type = IR_TYPE_OTHER;
203         int err = -ENOMEM;
204
205         if (!btv->has_remote)
206                 return -ENODEV;
207
208         ir = kzalloc(sizeof(*ir),GFP_KERNEL);
209         input_dev = input_allocate_device();
210         if (!ir || !input_dev)
211                 goto err_out_free;
212
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
222                 break;
223
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
230                 break;
231
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
237                 break;
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
245                 break;
246
247         case BTTV_BOARD_WINFAST2000:
248                 ir_codes         = ir_codes_winfast;
249                 ir->mask_keycode = 0x1f8;
250                 break;
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;
256                 break;
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
262                 break;
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
269                 break;
270         case BTTV_BOARD_NEBULA_DIGITV:
271                 ir_codes = ir_codes_nebula;
272                 btv->custom_irq = bttv_rc5_irq;
273                 ir->rc5_gpio = 1;
274                 break;
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 */
280                 break;
281         }
282         if (NULL == ir_codes) {
283                 dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
284                 err = -ENODEV;
285                 goto err_out_free;
286         }
287
288         if (ir->rc5_gpio) {
289                 u32 gpio;
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));
295         } else {
296                 /* init hardware-specific stuff */
297                 bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
298         }
299
300         /* init input device */
301         ir->dev = input_dev;
302
303         snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
304                  btv->c.type);
305         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
306                  pci_name(btv->c.pci));
307
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;
316         } else {
317                 input_dev->id.vendor  = btv->c.pci->vendor;
318                 input_dev->id.product = btv->c.pci->device;
319         }
320         input_dev->dev.parent = &btv->c.pci->dev;
321
322         btv->remote = ir;
323         bttv_ir_start(btv, ir);
324
325         /* all done */
326         err = input_register_device(btv->remote->dev);
327         if (err)
328                 goto err_out_stop;
329
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;
333
334         return 0;
335
336  err_out_stop:
337         bttv_ir_stop(btv);
338         btv->remote = NULL;
339  err_out_free:
340         input_free_device(input_dev);
341         kfree(ir);
342         return err;
343 }
344
345 void bttv_input_fini(struct bttv *btv)
346 {
347         if (btv->remote == NULL)
348                 return;
349
350         bttv_ir_stop(btv);
351         input_unregister_device(btv->remote->dev);
352         kfree(btv->remote);
353         btv->remote = NULL;
354 }
355
356
357 /*
358  * Local variables:
359  * c-basic-offset: 8
360  * End:
361  */