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Commit | Line | Data |
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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; | |
73 | u32 gpio, data; | |
74 | ||
75 | /* read gpio value */ | |
76 | gpio = cx_read(ir->gpio_addr); | |
77 | if (ir->polling) { | |
78 | if (ir->last_gpio == gpio) | |
79 | return; | |
80 | ir->last_gpio = gpio; | |
81 | } | |
82 | ||
83 | /* extract data */ | |
84 | data = ir_extract_bits(gpio, ir->mask_keycode); | |
85 | ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n", | |
41ef7c1e MCC |
86 | gpio, data, |
87 | ir->polling ? "poll" : "irq", | |
88 | (gpio & ir->mask_keydown) ? " down" : "", | |
89 | (gpio & ir->mask_keyup) ? " up" : ""); | |
1da177e4 LT |
90 | |
91 | if (ir->mask_keydown) { | |
92 | /* bit set on keydown */ | |
93 | if (gpio & ir->mask_keydown) { | |
b7df3910 | 94 | ir_input_keydown(ir->input, &ir->ir, data, data); |
1da177e4 | 95 | } else { |
b7df3910 | 96 | ir_input_nokey(ir->input, &ir->ir); |
1da177e4 LT |
97 | } |
98 | ||
99 | } else if (ir->mask_keyup) { | |
100 | /* bit cleared on keydown */ | |
101 | if (0 == (gpio & ir->mask_keyup)) { | |
b7df3910 | 102 | ir_input_keydown(ir->input, &ir->ir, data, data); |
1da177e4 | 103 | } else { |
b7df3910 | 104 | ir_input_nokey(ir->input, &ir->ir); |
1da177e4 LT |
105 | } |
106 | ||
107 | } else { | |
108 | /* can't distinguish keydown/up :-/ */ | |
b7df3910 DT |
109 | ir_input_keydown(ir->input, &ir->ir, data, data); |
110 | ir_input_nokey(ir->input, &ir->ir); | |
1da177e4 LT |
111 | } |
112 | } | |
113 | ||
114 | static void ir_timer(unsigned long data) | |
115 | { | |
41ef7c1e | 116 | struct cx88_IR *ir = (struct cx88_IR *)data; |
1da177e4 LT |
117 | |
118 | schedule_work(&ir->work); | |
119 | } | |
120 | ||
121 | static void cx88_ir_work(void *data) | |
122 | { | |
123 | struct cx88_IR *ir = data; | |
124 | unsigned long timeout; | |
125 | ||
126 | cx88_ir_handle_key(ir); | |
127 | timeout = jiffies + (ir->polling * HZ / 1000); | |
128 | mod_timer(&ir->timer, timeout); | |
129 | } | |
130 | ||
131 | /* ---------------------------------------------------------------------- */ | |
132 | ||
133 | int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci) | |
134 | { | |
135 | struct cx88_IR *ir; | |
b7df3910 | 136 | struct input_dev *input_dev; |
1da177e4 LT |
137 | IR_KEYTAB_TYPE *ir_codes = NULL; |
138 | int ir_type = IR_TYPE_OTHER; | |
139 | ||
b7df3910 DT |
140 | ir = kzalloc(sizeof(*ir), GFP_KERNEL); |
141 | input_dev = input_allocate_device(); | |
142 | if (!ir || !input_dev) { | |
143 | kfree(ir); | |
144 | input_free_device(input_dev); | |
1da177e4 | 145 | return -ENOMEM; |
b7df3910 DT |
146 | } |
147 | ||
148 | ir->input = input_dev; | |
1da177e4 LT |
149 | |
150 | /* detect & configure */ | |
151 | switch (core->board) { | |
152 | case CX88_BOARD_DNTV_LIVE_DVB_T: | |
b45009b0 | 153 | case CX88_BOARD_KWORLD_DVB_T: |
41ef7c1e MCC |
154 | ir_codes = ir_codes_dntv_live_dvb_t; |
155 | ir->gpio_addr = MO_GP1_IO; | |
1da177e4 | 156 | ir->mask_keycode = 0x1f; |
41ef7c1e MCC |
157 | ir->mask_keyup = 0x60; |
158 | ir->polling = 50; /* ms */ | |
1da177e4 | 159 | break; |
e52e98a7 MCC |
160 | case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1: |
161 | ir_codes = ir_codes_cinergy_1400; | |
162 | ir_type = IR_TYPE_PD; | |
fc40b261 | 163 | ir->sampling = 0xeb04; /* address */ |
e52e98a7 | 164 | break; |
1da177e4 LT |
165 | case CX88_BOARD_HAUPPAUGE: |
166 | case CX88_BOARD_HAUPPAUGE_DVB_T1: | |
fb56cb65 ST |
167 | case CX88_BOARD_HAUPPAUGE_NOVASE2_S1: |
168 | case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1: | |
611900c1 | 169 | case CX88_BOARD_HAUPPAUGE_HVR1100: |
41ef7c1e MCC |
170 | ir_codes = ir_codes_hauppauge_new; |
171 | ir_type = IR_TYPE_RC5; | |
172 | ir->sampling = 1; | |
1da177e4 LT |
173 | break; |
174 | case CX88_BOARD_WINFAST2000XP_EXPERT: | |
41ef7c1e MCC |
175 | ir_codes = ir_codes_winfast; |
176 | ir->gpio_addr = MO_GP0_IO; | |
1da177e4 | 177 | ir->mask_keycode = 0x8f8; |
41ef7c1e MCC |
178 | ir->mask_keyup = 0x100; |
179 | ir->polling = 1; /* ms */ | |
1da177e4 LT |
180 | break; |
181 | case CX88_BOARD_IODATA_GVBCTV7E: | |
41ef7c1e MCC |
182 | ir_codes = ir_codes_iodata_bctv7e; |
183 | ir->gpio_addr = MO_GP0_IO; | |
1da177e4 LT |
184 | ir->mask_keycode = 0xfd; |
185 | ir->mask_keydown = 0x02; | |
41ef7c1e | 186 | ir->polling = 5; /* ms */ |
1da177e4 | 187 | break; |
239df2e2 | 188 | case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO: |
41ef7c1e MCC |
189 | ir_codes = ir_codes_pixelview; |
190 | ir->gpio_addr = MO_GP1_IO; | |
239df2e2 | 191 | ir->mask_keycode = 0x1f; |
41ef7c1e MCC |
192 | ir->mask_keyup = 0x80; |
193 | ir->polling = 1; /* ms */ | |
239df2e2 | 194 | break; |
a82decf6 | 195 | case CX88_BOARD_ADSTECH_DVB_T_PCI: |
41ef7c1e MCC |
196 | ir_codes = ir_codes_adstech_dvb_t_pci; |
197 | ir->gpio_addr = MO_GP1_IO; | |
a82decf6 | 198 | ir->mask_keycode = 0xbf; |
41ef7c1e MCC |
199 | ir->mask_keyup = 0x40; |
200 | ir->polling = 50; /* ms */ | |
201 | break; | |
202 | case CX88_BOARD_MSI_TVANYWHERE_MASTER: | |
203 | ir_codes = ir_codes_msi_tvanywhere; | |
204 | ir->gpio_addr = MO_GP1_IO; | |
205 | ir->mask_keycode = 0x1f; | |
206 | ir->mask_keyup = 0x40; | |
207 | ir->polling = 1; /* ms */ | |
a82decf6 | 208 | break; |
899ad11b | 209 | case CX88_BOARD_AVERTV_303: |
565f4949 | 210 | case CX88_BOARD_AVERTV_STUDIO_303: |
899ad11b GG |
211 | ir_codes = ir_codes_avertv_303; |
212 | ir->gpio_addr = MO_GP2_IO; | |
213 | ir->mask_keycode = 0xfb; | |
214 | ir->mask_keydown = 0x02; | |
215 | ir->polling = 50; /* ms */ | |
216 | break; | |
fc40b261 CP |
217 | case CX88_BOARD_DNTV_LIVE_DVB_T_PRO: |
218 | ir_codes = ir_codes_dntv_live_dvbt_pro; | |
219 | ir_type = IR_TYPE_PD; | |
220 | ir->sampling = 0xff00; /* address */ | |
221 | break; | |
1da177e4 | 222 | } |
b45009b0 | 223 | |
1da177e4 LT |
224 | if (NULL == ir_codes) { |
225 | kfree(ir); | |
b7df3910 | 226 | input_free_device(input_dev); |
1da177e4 LT |
227 | return -ENODEV; |
228 | } | |
229 | ||
230 | /* init input device */ | |
231 | snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", | |
232 | cx88_boards[core->board].name); | |
41ef7c1e | 233 | snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci)); |
1da177e4 | 234 | |
b7df3910 DT |
235 | ir_input_init(input_dev, &ir->ir, ir_type, ir_codes); |
236 | input_dev->name = ir->name; | |
237 | input_dev->phys = ir->phys; | |
238 | input_dev->id.bustype = BUS_PCI; | |
239 | input_dev->id.version = 1; | |
1da177e4 | 240 | if (pci->subsystem_vendor) { |
b7df3910 DT |
241 | input_dev->id.vendor = pci->subsystem_vendor; |
242 | input_dev->id.product = pci->subsystem_device; | |
1da177e4 | 243 | } else { |
b7df3910 DT |
244 | input_dev->id.vendor = pci->vendor; |
245 | input_dev->id.product = pci->device; | |
1da177e4 | 246 | } |
b7df3910 | 247 | input_dev->cdev.dev = &pci->dev; |
1da177e4 LT |
248 | /* record handles to ourself */ |
249 | ir->core = core; | |
250 | core->ir = ir; | |
251 | ||
252 | if (ir->polling) { | |
253 | INIT_WORK(&ir->work, cx88_ir_work, ir); | |
254 | init_timer(&ir->timer); | |
255 | ir->timer.function = ir_timer; | |
41ef7c1e | 256 | ir->timer.data = (unsigned long)ir; |
1da177e4 LT |
257 | schedule_work(&ir->work); |
258 | } | |
259 | if (ir->sampling) { | |
41ef7c1e MCC |
260 | core->pci_irqmask |= (1 << 18); /* IR_SMP_INT */ |
261 | cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */ | |
262 | cx_write(MO_DDSCFG_IO, 0x5); /* enable */ | |
1da177e4 LT |
263 | } |
264 | ||
265 | /* all done */ | |
b7df3910 | 266 | input_register_device(ir->input); |
1da177e4 LT |
267 | |
268 | return 0; | |
269 | } | |
270 | ||
271 | int cx88_ir_fini(struct cx88_core *core) | |
272 | { | |
273 | struct cx88_IR *ir = core->ir; | |
274 | ||
275 | /* skip detach on non attached boards */ | |
276 | if (NULL == ir) | |
277 | return 0; | |
278 | ||
fc40b261 CP |
279 | if (ir->sampling) { |
280 | cx_write(MO_DDSCFG_IO, 0x0); | |
281 | core->pci_irqmask &= ~(1 << 18); | |
282 | } | |
1da177e4 LT |
283 | if (ir->polling) { |
284 | del_timer(&ir->timer); | |
285 | flush_scheduled_work(); | |
286 | } | |
287 | ||
b7df3910 | 288 | input_unregister_device(ir->input); |
1da177e4 LT |
289 | kfree(ir); |
290 | ||
291 | /* done */ | |
292 | core->ir = NULL; | |
293 | return 0; | |
294 | } | |
295 | ||
296 | /* ---------------------------------------------------------------------- */ | |
297 | ||
298 | void cx88_ir_irq(struct cx88_core *core) | |
299 | { | |
300 | struct cx88_IR *ir = core->ir; | |
e52e98a7 | 301 | u32 samples, ircode; |
1da177e4 LT |
302 | int i; |
303 | ||
304 | if (NULL == ir) | |
305 | return; | |
306 | if (!ir->sampling) | |
307 | return; | |
308 | ||
309 | samples = cx_read(MO_SAMPLE_IO); | |
41ef7c1e | 310 | if (0 != samples && 0xffffffff != samples) { |
1da177e4 LT |
311 | /* record sample data */ |
312 | if (ir->scount < ARRAY_SIZE(ir->samples)) | |
313 | ir->samples[ir->scount++] = samples; | |
314 | return; | |
315 | } | |
316 | if (!ir->scount) { | |
317 | /* nothing to sample */ | |
41ef7c1e | 318 | if (ir->ir.keypressed && time_after(jiffies, ir->release)) |
b7df3910 | 319 | ir_input_nokey(ir->input, &ir->ir); |
1da177e4 LT |
320 | return; |
321 | } | |
322 | ||
323 | /* have a complete sample */ | |
324 | if (ir->scount < ARRAY_SIZE(ir->samples)) | |
325 | ir->samples[ir->scount++] = samples; | |
326 | for (i = 0; i < ir->scount; i++) | |
327 | ir->samples[i] = ~ir->samples[i]; | |
328 | if (ir_debug) | |
41ef7c1e | 329 | ir_dump_samples(ir->samples, ir->scount); |
1da177e4 LT |
330 | |
331 | /* decode it */ | |
332 | switch (core->board) { | |
e52e98a7 | 333 | case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1: |
fc40b261 | 334 | case CX88_BOARD_DNTV_LIVE_DVB_T_PRO: |
e52e98a7 MCC |
335 | ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4); |
336 | ||
337 | if (ircode == 0xffffffff) { /* decoding error */ | |
338 | ir_dprintk("pulse distance decoding error\n"); | |
339 | break; | |
340 | } | |
341 | ||
342 | ir_dprintk("pulse distance decoded: %x\n", ircode); | |
343 | ||
344 | if (ircode == 0) { /* key still pressed */ | |
345 | ir_dprintk("pulse distance decoded repeat code\n"); | |
346 | ir->release = jiffies + msecs_to_jiffies(120); | |
347 | break; | |
348 | } | |
349 | ||
fc40b261 | 350 | if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */ |
e52e98a7 | 351 | ir_dprintk("pulse distance decoded wrong address\n"); |
4ac97914 | 352 | break; |
e52e98a7 MCC |
353 | } |
354 | ||
355 | if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */ | |
356 | ir_dprintk("pulse distance decoded wrong check sum\n"); | |
357 | break; | |
358 | } | |
359 | ||
360 | ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f); | |
361 | ||
b7df3910 | 362 | ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff); |
e52e98a7 MCC |
363 | ir->release = jiffies + msecs_to_jiffies(120); |
364 | break; | |
1da177e4 LT |
365 | case CX88_BOARD_HAUPPAUGE: |
366 | case CX88_BOARD_HAUPPAUGE_DVB_T1: | |
fb56cb65 ST |
367 | case CX88_BOARD_HAUPPAUGE_NOVASE2_S1: |
368 | case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1: | |
30367bfd | 369 | case CX88_BOARD_HAUPPAUGE_HVR1100: |
e52e98a7 MCC |
370 | ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7); |
371 | ir_dprintk("biphase decoded: %x\n", ircode); | |
372 | if ((ircode & 0xfffff000) != 0x3000) | |
1da177e4 | 373 | break; |
b7df3910 | 374 | ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f, ircode); |
1da177e4 LT |
375 | ir->release = jiffies + msecs_to_jiffies(120); |
376 | break; | |
377 | } | |
378 | ||
379 | ir->scount = 0; | |
380 | return; | |
381 | } | |
382 | ||
383 | /* ---------------------------------------------------------------------- */ | |
384 | ||
385 | MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe"); | |
386 | MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls"); | |
387 | MODULE_LICENSE("GPL"); | |
1da177e4 LT |
388 | /* |
389 | * Local variables: | |
390 | * c-basic-offset: 8 | |
391 | * End: | |
392 | */ |