Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * |
3 | * Device driver for GPIO attached remote control interfaces | |
4 | * on Conexant 2388x based TV/DVB cards. | |
5 | * | |
6 | * Copyright (c) 2003 Pavel Machek | |
7 | * Copyright (c) 2004 Gerd Knorr | |
fc40b261 | 8 | * Copyright (c) 2004, 2005 Chris Pascoe |
1da177e4 LT |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | */ | |
24 | ||
25 | #include <linux/init.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/input.h> | |
28 | #include <linux/pci.h> | |
29 | #include <linux/module.h> | |
30 | #include <linux/moduleparam.h> | |
31 | ||
1da177e4 | 32 | #include "cx88.h" |
d21838dd | 33 | #include <media/ir-common.h> |
1da177e4 LT |
34 | |
35 | /* ---------------------------------------------------------------------- */ | |
36 | ||
1da177e4 | 37 | struct cx88_IR { |
41ef7c1e | 38 | struct cx88_core *core; |
b7df3910 | 39 | struct input_dev *input; |
41ef7c1e MCC |
40 | struct ir_input_state ir; |
41 | char name[32]; | |
42 | char phys[32]; | |
1da177e4 LT |
43 | |
44 | /* sample from gpio pin 16 */ | |
fc40b261 | 45 | u32 sampling; |
41ef7c1e MCC |
46 | u32 samples[16]; |
47 | int scount; | |
48 | unsigned long release; | |
1da177e4 LT |
49 | |
50 | /* poll external decoder */ | |
41ef7c1e MCC |
51 | int polling; |
52 | struct work_struct work; | |
53 | struct timer_list timer; | |
54 | u32 gpio_addr; | |
55 | u32 last_gpio; | |
56 | u32 mask_keycode; | |
57 | u32 mask_keydown; | |
58 | u32 mask_keyup; | |
1da177e4 LT |
59 | }; |
60 | ||
61 | static int ir_debug = 0; | |
41ef7c1e | 62 | module_param(ir_debug, int, 0644); /* debug level [IR] */ |
1da177e4 LT |
63 | MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]"); |
64 | ||
65 | #define ir_dprintk(fmt, arg...) if (ir_debug) \ | |
e52e98a7 | 66 | printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg) |
1da177e4 LT |
67 | |
68 | /* ---------------------------------------------------------------------- */ | |
69 | ||
70 | static void cx88_ir_handle_key(struct cx88_IR *ir) | |
71 | { | |
72 | struct cx88_core *core = ir->core; | |
680543c5 | 73 | u32 gpio, data, auxgpio; |
1da177e4 LT |
74 | |
75 | /* read gpio value */ | |
76 | gpio = cx_read(ir->gpio_addr); | |
be4f4519 | 77 | if (core->board == CX88_BOARD_NPGTECH_REALTV_TOP10FM) { |
680543c5 RC |
78 | /* This board apparently uses a combination of 2 GPIO |
79 | to represent the keys. Additionally, the second GPIO | |
80 | can be used for parity. | |
81 | ||
82 | Example: | |
83 | ||
84 | for key "5" | |
85 | gpio = 0x758, auxgpio = 0xe5 or 0xf5 | |
86 | for key "Power" | |
87 | gpio = 0x758, auxgpio = 0xed or 0xfd | |
88 | */ | |
89 | ||
90 | auxgpio = cx_read(MO_GP1_IO); | |
91 | /* Take out the parity part */ | |
a62c61d3 | 92 | gpio=(gpio & 0x7fd) + (auxgpio & 0xef); |
680543c5 RC |
93 | } else |
94 | auxgpio = gpio; | |
95 | ||
1da177e4 | 96 | if (ir->polling) { |
680543c5 | 97 | if (ir->last_gpio == auxgpio) |
1da177e4 | 98 | return; |
680543c5 | 99 | ir->last_gpio = auxgpio; |
1da177e4 LT |
100 | } |
101 | ||
102 | /* extract data */ | |
103 | data = ir_extract_bits(gpio, ir->mask_keycode); | |
104 | ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n", | |
41ef7c1e MCC |
105 | gpio, data, |
106 | ir->polling ? "poll" : "irq", | |
107 | (gpio & ir->mask_keydown) ? " down" : "", | |
108 | (gpio & ir->mask_keyup) ? " up" : ""); | |
1da177e4 LT |
109 | |
110 | if (ir->mask_keydown) { | |
111 | /* bit set on keydown */ | |
112 | if (gpio & ir->mask_keydown) { | |
b7df3910 | 113 | ir_input_keydown(ir->input, &ir->ir, data, data); |
1da177e4 | 114 | } else { |
b7df3910 | 115 | ir_input_nokey(ir->input, &ir->ir); |
1da177e4 LT |
116 | } |
117 | ||
118 | } else if (ir->mask_keyup) { | |
119 | /* bit cleared on keydown */ | |
120 | if (0 == (gpio & ir->mask_keyup)) { | |
b7df3910 | 121 | ir_input_keydown(ir->input, &ir->ir, data, data); |
1da177e4 | 122 | } else { |
b7df3910 | 123 | ir_input_nokey(ir->input, &ir->ir); |
1da177e4 LT |
124 | } |
125 | ||
126 | } else { | |
127 | /* can't distinguish keydown/up :-/ */ | |
b7df3910 DT |
128 | ir_input_keydown(ir->input, &ir->ir, data, data); |
129 | ir_input_nokey(ir->input, &ir->ir); | |
1da177e4 LT |
130 | } |
131 | } | |
132 | ||
133 | static void ir_timer(unsigned long data) | |
134 | { | |
41ef7c1e | 135 | struct cx88_IR *ir = (struct cx88_IR *)data; |
1da177e4 LT |
136 | |
137 | schedule_work(&ir->work); | |
138 | } | |
139 | ||
140 | static void cx88_ir_work(void *data) | |
141 | { | |
142 | struct cx88_IR *ir = data; | |
143 | unsigned long timeout; | |
144 | ||
145 | cx88_ir_handle_key(ir); | |
146 | timeout = jiffies + (ir->polling * HZ / 1000); | |
147 | mod_timer(&ir->timer, timeout); | |
148 | } | |
149 | ||
150 | /* ---------------------------------------------------------------------- */ | |
151 | ||
152 | int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci) | |
153 | { | |
154 | struct cx88_IR *ir; | |
b7df3910 | 155 | struct input_dev *input_dev; |
1da177e4 LT |
156 | IR_KEYTAB_TYPE *ir_codes = NULL; |
157 | int ir_type = IR_TYPE_OTHER; | |
158 | ||
b7df3910 DT |
159 | ir = kzalloc(sizeof(*ir), GFP_KERNEL); |
160 | input_dev = input_allocate_device(); | |
161 | if (!ir || !input_dev) { | |
162 | kfree(ir); | |
163 | input_free_device(input_dev); | |
1da177e4 | 164 | return -ENOMEM; |
b7df3910 DT |
165 | } |
166 | ||
167 | ir->input = input_dev; | |
1da177e4 LT |
168 | |
169 | /* detect & configure */ | |
170 | switch (core->board) { | |
171 | case CX88_BOARD_DNTV_LIVE_DVB_T: | |
b45009b0 | 172 | case CX88_BOARD_KWORLD_DVB_T: |
28ecc449 | 173 | case CX88_BOARD_KWORLD_DVB_T_CX22702: |
41ef7c1e MCC |
174 | ir_codes = ir_codes_dntv_live_dvb_t; |
175 | ir->gpio_addr = MO_GP1_IO; | |
1da177e4 | 176 | ir->mask_keycode = 0x1f; |
41ef7c1e MCC |
177 | ir->mask_keyup = 0x60; |
178 | ir->polling = 50; /* ms */ | |
1da177e4 | 179 | break; |
e52e98a7 MCC |
180 | case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1: |
181 | ir_codes = ir_codes_cinergy_1400; | |
182 | ir_type = IR_TYPE_PD; | |
fc40b261 | 183 | ir->sampling = 0xeb04; /* address */ |
e52e98a7 | 184 | break; |
1da177e4 LT |
185 | case CX88_BOARD_HAUPPAUGE: |
186 | case CX88_BOARD_HAUPPAUGE_DVB_T1: | |
fb56cb65 ST |
187 | case CX88_BOARD_HAUPPAUGE_NOVASE2_S1: |
188 | case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1: | |
611900c1 | 189 | case CX88_BOARD_HAUPPAUGE_HVR1100: |
41ef7c1e MCC |
190 | ir_codes = ir_codes_hauppauge_new; |
191 | ir_type = IR_TYPE_RC5; | |
192 | ir->sampling = 1; | |
1da177e4 | 193 | break; |
2de873e6 | 194 | case CX88_BOARD_WINFAST_DTV2000H: |
1da177e4 | 195 | case CX88_BOARD_WINFAST2000XP_EXPERT: |
41ef7c1e MCC |
196 | ir_codes = ir_codes_winfast; |
197 | ir->gpio_addr = MO_GP0_IO; | |
1da177e4 | 198 | ir->mask_keycode = 0x8f8; |
41ef7c1e | 199 | ir->mask_keyup = 0x100; |
2de873e6 | 200 | ir->polling = 50; /* ms */ |
1da177e4 LT |
201 | break; |
202 | case CX88_BOARD_IODATA_GVBCTV7E: | |
41ef7c1e MCC |
203 | ir_codes = ir_codes_iodata_bctv7e; |
204 | ir->gpio_addr = MO_GP0_IO; | |
1da177e4 LT |
205 | ir->mask_keycode = 0xfd; |
206 | ir->mask_keydown = 0x02; | |
41ef7c1e | 207 | ir->polling = 5; /* ms */ |
1da177e4 | 208 | break; |
a5daecba | 209 | case CX88_BOARD_PROLINK_PLAYTVPVR: |
239df2e2 | 210 | case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO: |
41ef7c1e MCC |
211 | ir_codes = ir_codes_pixelview; |
212 | ir->gpio_addr = MO_GP1_IO; | |
239df2e2 | 213 | ir->mask_keycode = 0x1f; |
41ef7c1e MCC |
214 | ir->mask_keyup = 0x80; |
215 | ir->polling = 1; /* ms */ | |
239df2e2 | 216 | break; |
b639f9d2 NS |
217 | case CX88_BOARD_KWORLD_LTV883: |
218 | ir_codes = ir_codes_pixelview; | |
219 | ir->gpio_addr = MO_GP1_IO; | |
220 | ir->mask_keycode = 0x1f; | |
221 | ir->mask_keyup = 0x60; | |
222 | ir->polling = 1; /* ms */ | |
223 | break; | |
a82decf6 | 224 | case CX88_BOARD_ADSTECH_DVB_T_PCI: |
41ef7c1e MCC |
225 | ir_codes = ir_codes_adstech_dvb_t_pci; |
226 | ir->gpio_addr = MO_GP1_IO; | |
a82decf6 | 227 | ir->mask_keycode = 0xbf; |
41ef7c1e MCC |
228 | ir->mask_keyup = 0x40; |
229 | ir->polling = 50; /* ms */ | |
230 | break; | |
231 | case CX88_BOARD_MSI_TVANYWHERE_MASTER: | |
232 | ir_codes = ir_codes_msi_tvanywhere; | |
233 | ir->gpio_addr = MO_GP1_IO; | |
234 | ir->mask_keycode = 0x1f; | |
235 | ir->mask_keyup = 0x40; | |
236 | ir->polling = 1; /* ms */ | |
a82decf6 | 237 | break; |
899ad11b | 238 | case CX88_BOARD_AVERTV_303: |
565f4949 | 239 | case CX88_BOARD_AVERTV_STUDIO_303: |
899ad11b GG |
240 | ir_codes = ir_codes_avertv_303; |
241 | ir->gpio_addr = MO_GP2_IO; | |
242 | ir->mask_keycode = 0xfb; | |
243 | ir->mask_keydown = 0x02; | |
244 | ir->polling = 50; /* ms */ | |
245 | break; | |
fc40b261 CP |
246 | case CX88_BOARD_DNTV_LIVE_DVB_T_PRO: |
247 | ir_codes = ir_codes_dntv_live_dvbt_pro; | |
248 | ir_type = IR_TYPE_PD; | |
249 | ir->sampling = 0xff00; /* address */ | |
250 | break; | |
be4f4519 | 251 | case CX88_BOARD_NPGTECH_REALTV_TOP10FM: |
680543c5 RC |
252 | ir_codes = ir_codes_npgtech; |
253 | ir->gpio_addr = MO_GP0_IO; | |
254 | ir->mask_keycode = 0xfa; | |
255 | ir->polling = 50; /* ms */ | |
256 | break; | |
1da177e4 | 257 | } |
b45009b0 | 258 | |
1da177e4 LT |
259 | if (NULL == ir_codes) { |
260 | kfree(ir); | |
b7df3910 | 261 | input_free_device(input_dev); |
1da177e4 LT |
262 | return -ENODEV; |
263 | } | |
264 | ||
265 | /* init input device */ | |
266 | snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", | |
267 | cx88_boards[core->board].name); | |
41ef7c1e | 268 | snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci)); |
1da177e4 | 269 | |
b7df3910 DT |
270 | ir_input_init(input_dev, &ir->ir, ir_type, ir_codes); |
271 | input_dev->name = ir->name; | |
272 | input_dev->phys = ir->phys; | |
273 | input_dev->id.bustype = BUS_PCI; | |
274 | input_dev->id.version = 1; | |
1da177e4 | 275 | if (pci->subsystem_vendor) { |
b7df3910 DT |
276 | input_dev->id.vendor = pci->subsystem_vendor; |
277 | input_dev->id.product = pci->subsystem_device; | |
1da177e4 | 278 | } else { |
b7df3910 DT |
279 | input_dev->id.vendor = pci->vendor; |
280 | input_dev->id.product = pci->device; | |
1da177e4 | 281 | } |
b7df3910 | 282 | input_dev->cdev.dev = &pci->dev; |
1da177e4 LT |
283 | /* record handles to ourself */ |
284 | ir->core = core; | |
285 | core->ir = ir; | |
286 | ||
287 | if (ir->polling) { | |
288 | INIT_WORK(&ir->work, cx88_ir_work, ir); | |
289 | init_timer(&ir->timer); | |
290 | ir->timer.function = ir_timer; | |
41ef7c1e | 291 | ir->timer.data = (unsigned long)ir; |
1da177e4 LT |
292 | schedule_work(&ir->work); |
293 | } | |
294 | if (ir->sampling) { | |
41ef7c1e MCC |
295 | core->pci_irqmask |= (1 << 18); /* IR_SMP_INT */ |
296 | cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */ | |
297 | cx_write(MO_DDSCFG_IO, 0x5); /* enable */ | |
1da177e4 LT |
298 | } |
299 | ||
300 | /* all done */ | |
b7df3910 | 301 | input_register_device(ir->input); |
1da177e4 LT |
302 | |
303 | return 0; | |
304 | } | |
305 | ||
306 | int cx88_ir_fini(struct cx88_core *core) | |
307 | { | |
308 | struct cx88_IR *ir = core->ir; | |
309 | ||
310 | /* skip detach on non attached boards */ | |
311 | if (NULL == ir) | |
312 | return 0; | |
313 | ||
fc40b261 CP |
314 | if (ir->sampling) { |
315 | cx_write(MO_DDSCFG_IO, 0x0); | |
316 | core->pci_irqmask &= ~(1 << 18); | |
317 | } | |
1da177e4 LT |
318 | if (ir->polling) { |
319 | del_timer(&ir->timer); | |
320 | flush_scheduled_work(); | |
321 | } | |
322 | ||
b7df3910 | 323 | input_unregister_device(ir->input); |
1da177e4 LT |
324 | kfree(ir); |
325 | ||
326 | /* done */ | |
327 | core->ir = NULL; | |
328 | return 0; | |
329 | } | |
330 | ||
331 | /* ---------------------------------------------------------------------- */ | |
332 | ||
333 | void cx88_ir_irq(struct cx88_core *core) | |
334 | { | |
335 | struct cx88_IR *ir = core->ir; | |
e52e98a7 | 336 | u32 samples, ircode; |
1da177e4 LT |
337 | int i; |
338 | ||
339 | if (NULL == ir) | |
340 | return; | |
341 | if (!ir->sampling) | |
342 | return; | |
343 | ||
344 | samples = cx_read(MO_SAMPLE_IO); | |
41ef7c1e | 345 | if (0 != samples && 0xffffffff != samples) { |
1da177e4 LT |
346 | /* record sample data */ |
347 | if (ir->scount < ARRAY_SIZE(ir->samples)) | |
348 | ir->samples[ir->scount++] = samples; | |
349 | return; | |
350 | } | |
351 | if (!ir->scount) { | |
352 | /* nothing to sample */ | |
41ef7c1e | 353 | if (ir->ir.keypressed && time_after(jiffies, ir->release)) |
b7df3910 | 354 | ir_input_nokey(ir->input, &ir->ir); |
1da177e4 LT |
355 | return; |
356 | } | |
357 | ||
358 | /* have a complete sample */ | |
359 | if (ir->scount < ARRAY_SIZE(ir->samples)) | |
360 | ir->samples[ir->scount++] = samples; | |
361 | for (i = 0; i < ir->scount; i++) | |
362 | ir->samples[i] = ~ir->samples[i]; | |
363 | if (ir_debug) | |
41ef7c1e | 364 | ir_dump_samples(ir->samples, ir->scount); |
1da177e4 LT |
365 | |
366 | /* decode it */ | |
367 | switch (core->board) { | |
e52e98a7 | 368 | case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1: |
fc40b261 | 369 | case CX88_BOARD_DNTV_LIVE_DVB_T_PRO: |
e52e98a7 MCC |
370 | ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4); |
371 | ||
372 | if (ircode == 0xffffffff) { /* decoding error */ | |
373 | ir_dprintk("pulse distance decoding error\n"); | |
374 | break; | |
375 | } | |
376 | ||
377 | ir_dprintk("pulse distance decoded: %x\n", ircode); | |
378 | ||
379 | if (ircode == 0) { /* key still pressed */ | |
380 | ir_dprintk("pulse distance decoded repeat code\n"); | |
381 | ir->release = jiffies + msecs_to_jiffies(120); | |
382 | break; | |
383 | } | |
384 | ||
fc40b261 | 385 | if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */ |
e52e98a7 | 386 | ir_dprintk("pulse distance decoded wrong address\n"); |
4ac97914 | 387 | break; |
e52e98a7 MCC |
388 | } |
389 | ||
390 | if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */ | |
391 | ir_dprintk("pulse distance decoded wrong check sum\n"); | |
392 | break; | |
393 | } | |
394 | ||
395 | ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f); | |
396 | ||
b7df3910 | 397 | ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff); |
e52e98a7 MCC |
398 | ir->release = jiffies + msecs_to_jiffies(120); |
399 | break; | |
1da177e4 LT |
400 | case CX88_BOARD_HAUPPAUGE: |
401 | case CX88_BOARD_HAUPPAUGE_DVB_T1: | |
fb56cb65 ST |
402 | case CX88_BOARD_HAUPPAUGE_NOVASE2_S1: |
403 | case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1: | |
30367bfd | 404 | case CX88_BOARD_HAUPPAUGE_HVR1100: |
e52e98a7 MCC |
405 | ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7); |
406 | ir_dprintk("biphase decoded: %x\n", ircode); | |
407 | if ((ircode & 0xfffff000) != 0x3000) | |
1da177e4 | 408 | break; |
b7df3910 | 409 | ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f, ircode); |
1da177e4 LT |
410 | ir->release = jiffies + msecs_to_jiffies(120); |
411 | break; | |
412 | } | |
413 | ||
414 | ir->scount = 0; | |
415 | return; | |
416 | } | |
417 | ||
418 | /* ---------------------------------------------------------------------- */ | |
419 | ||
420 | MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe"); | |
421 | MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls"); | |
422 | MODULE_LICENSE("GPL"); | |
1da177e4 LT |
423 | /* |
424 | * Local variables: | |
425 | * c-basic-offset: 8 | |
426 | * End: | |
427 | */ |