3 * Device driver for GPIO attached remote control interfaces
4 * on Conexant 2388x based TV/DVB cards.
6 * Copyright (c) 2003 Pavel Machek
7 * Copyright (c) 2004 Gerd Knorr
8 * Copyright (c) 2004, 2005 Chris Pascoe
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.
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.
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
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>
33 #include <media/ir-common.h>
35 /* ---------------------------------------------------------------------- */
38 struct cx88_core
*core
;
39 struct input_dev
*input
;
40 struct ir_input_state ir
;
44 /* sample from gpio pin 16 */
48 unsigned long release
;
50 /* poll external decoder */
52 struct work_struct work
;
53 struct timer_list timer
;
61 static int ir_debug
= 0;
62 module_param(ir_debug
, int, 0644); /* debug level [IR] */
63 MODULE_PARM_DESC(ir_debug
, "enable debug messages [IR]");
65 #define ir_dprintk(fmt, arg...) if (ir_debug) \
66 printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
68 /* ---------------------------------------------------------------------- */
70 static void cx88_ir_handle_key(struct cx88_IR
*ir
)
72 struct cx88_core
*core
= ir
->core
;
73 u32 gpio
, data
, auxgpio
;
76 gpio
= cx_read(ir
->gpio_addr
);
77 if (core
->board
== CX88_BOARD_NPGTECH_REALTV_TOP10FM
) {
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.
85 gpio = 0x758, auxgpio = 0xe5 or 0xf5
87 gpio = 0x758, auxgpio = 0xed or 0xfd
90 auxgpio
= cx_read(MO_GP1_IO
);
91 /* Take out the parity part */
92 gpio
=(gpio
& 0x7fd) + (auxgpio
& 0xef);
97 if (ir
->last_gpio
== auxgpio
)
99 ir
->last_gpio
= auxgpio
;
103 data
= ir_extract_bits(gpio
, ir
->mask_keycode
);
104 ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
106 ir
->polling
? "poll" : "irq",
107 (gpio
& ir
->mask_keydown
) ? " down" : "",
108 (gpio
& ir
->mask_keyup
) ? " up" : "");
110 if (ir
->mask_keydown
) {
111 /* bit set on keydown */
112 if (gpio
& ir
->mask_keydown
) {
113 ir_input_keydown(ir
->input
, &ir
->ir
, data
, data
);
115 ir_input_nokey(ir
->input
, &ir
->ir
);
118 } else if (ir
->mask_keyup
) {
119 /* bit cleared on keydown */
120 if (0 == (gpio
& ir
->mask_keyup
)) {
121 ir_input_keydown(ir
->input
, &ir
->ir
, data
, data
);
123 ir_input_nokey(ir
->input
, &ir
->ir
);
127 /* can't distinguish keydown/up :-/ */
128 ir_input_keydown(ir
->input
, &ir
->ir
, data
, data
);
129 ir_input_nokey(ir
->input
, &ir
->ir
);
133 static void ir_timer(unsigned long data
)
135 struct cx88_IR
*ir
= (struct cx88_IR
*)data
;
137 schedule_work(&ir
->work
);
140 static void cx88_ir_work(void *data
)
142 struct cx88_IR
*ir
= data
;
143 unsigned long timeout
;
145 cx88_ir_handle_key(ir
);
146 timeout
= jiffies
+ (ir
->polling
* HZ
/ 1000);
147 mod_timer(&ir
->timer
, timeout
);
150 /* ---------------------------------------------------------------------- */
152 int cx88_ir_init(struct cx88_core
*core
, struct pci_dev
*pci
)
155 struct input_dev
*input_dev
;
156 IR_KEYTAB_TYPE
*ir_codes
= NULL
;
157 int ir_type
= IR_TYPE_OTHER
;
159 ir
= kzalloc(sizeof(*ir
), GFP_KERNEL
);
160 input_dev
= input_allocate_device();
161 if (!ir
|| !input_dev
) {
163 input_free_device(input_dev
);
167 ir
->input
= input_dev
;
169 /* detect & configure */
170 switch (core
->board
) {
171 case CX88_BOARD_DNTV_LIVE_DVB_T
:
172 case CX88_BOARD_KWORLD_DVB_T
:
173 case CX88_BOARD_KWORLD_DVB_T_CX22702
:
174 ir_codes
= ir_codes_dntv_live_dvb_t
;
175 ir
->gpio_addr
= MO_GP1_IO
;
176 ir
->mask_keycode
= 0x1f;
177 ir
->mask_keyup
= 0x60;
178 ir
->polling
= 50; /* ms */
180 case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1
:
181 ir_codes
= ir_codes_cinergy_1400
;
182 ir_type
= IR_TYPE_PD
;
183 ir
->sampling
= 0xeb04; /* address */
185 case CX88_BOARD_HAUPPAUGE
:
186 case CX88_BOARD_HAUPPAUGE_DVB_T1
:
187 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1
:
188 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1
:
189 case CX88_BOARD_HAUPPAUGE_HVR1100
:
190 ir_codes
= ir_codes_hauppauge_new
;
191 ir_type
= IR_TYPE_RC5
;
194 case CX88_BOARD_WINFAST_DTV2000H
:
195 case CX88_BOARD_WINFAST2000XP_EXPERT
:
196 ir_codes
= ir_codes_winfast
;
197 ir
->gpio_addr
= MO_GP0_IO
;
198 ir
->mask_keycode
= 0x8f8;
199 ir
->mask_keyup
= 0x100;
200 ir
->polling
= 50; /* ms */
202 case CX88_BOARD_IODATA_GVBCTV7E
:
203 ir_codes
= ir_codes_iodata_bctv7e
;
204 ir
->gpio_addr
= MO_GP0_IO
;
205 ir
->mask_keycode
= 0xfd;
206 ir
->mask_keydown
= 0x02;
207 ir
->polling
= 5; /* ms */
209 case CX88_BOARD_PROLINK_PLAYTVPVR
:
210 case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO
:
211 ir_codes
= ir_codes_pixelview
;
212 ir
->gpio_addr
= MO_GP1_IO
;
213 ir
->mask_keycode
= 0x1f;
214 ir
->mask_keyup
= 0x80;
215 ir
->polling
= 1; /* ms */
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 */
224 case CX88_BOARD_ADSTECH_DVB_T_PCI
:
225 ir_codes
= ir_codes_adstech_dvb_t_pci
;
226 ir
->gpio_addr
= MO_GP1_IO
;
227 ir
->mask_keycode
= 0xbf;
228 ir
->mask_keyup
= 0x40;
229 ir
->polling
= 50; /* ms */
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 */
238 case CX88_BOARD_AVERTV_303
:
239 case CX88_BOARD_AVERTV_STUDIO_303
:
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 */
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 */
251 case CX88_BOARD_NPGTECH_REALTV_TOP10FM
:
252 ir_codes
= ir_codes_npgtech
;
253 ir
->gpio_addr
= MO_GP0_IO
;
254 ir
->mask_keycode
= 0xfa;
255 ir
->polling
= 50; /* ms */
259 if (NULL
== ir_codes
) {
261 input_free_device(input_dev
);
265 /* init input device */
266 snprintf(ir
->name
, sizeof(ir
->name
), "cx88 IR (%s)",
267 cx88_boards
[core
->board
].name
);
268 snprintf(ir
->phys
, sizeof(ir
->phys
), "pci-%s/ir0", pci_name(pci
));
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;
275 if (pci
->subsystem_vendor
) {
276 input_dev
->id
.vendor
= pci
->subsystem_vendor
;
277 input_dev
->id
.product
= pci
->subsystem_device
;
279 input_dev
->id
.vendor
= pci
->vendor
;
280 input_dev
->id
.product
= pci
->device
;
282 input_dev
->cdev
.dev
= &pci
->dev
;
283 /* record handles to ourself */
288 INIT_WORK(&ir
->work
, cx88_ir_work
, ir
);
289 init_timer(&ir
->timer
);
290 ir
->timer
.function
= ir_timer
;
291 ir
->timer
.data
= (unsigned long)ir
;
292 schedule_work(&ir
->work
);
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 */
301 input_register_device(ir
->input
);
306 int cx88_ir_fini(struct cx88_core
*core
)
308 struct cx88_IR
*ir
= core
->ir
;
310 /* skip detach on non attached boards */
315 cx_write(MO_DDSCFG_IO
, 0x0);
316 core
->pci_irqmask
&= ~(1 << 18);
319 del_timer(&ir
->timer
);
320 flush_scheduled_work();
323 input_unregister_device(ir
->input
);
331 /* ---------------------------------------------------------------------- */
333 void cx88_ir_irq(struct cx88_core
*core
)
335 struct cx88_IR
*ir
= core
->ir
;
344 samples
= cx_read(MO_SAMPLE_IO
);
345 if (0 != samples
&& 0xffffffff != samples
) {
346 /* record sample data */
347 if (ir
->scount
< ARRAY_SIZE(ir
->samples
))
348 ir
->samples
[ir
->scount
++] = samples
;
352 /* nothing to sample */
353 if (ir
->ir
.keypressed
&& time_after(jiffies
, ir
->release
))
354 ir_input_nokey(ir
->input
, &ir
->ir
);
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
];
364 ir_dump_samples(ir
->samples
, ir
->scount
);
367 switch (core
->board
) {
368 case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1
:
369 case CX88_BOARD_DNTV_LIVE_DVB_T_PRO
:
370 ircode
= ir_decode_pulsedistance(ir
->samples
, ir
->scount
, 1, 4);
372 if (ircode
== 0xffffffff) { /* decoding error */
373 ir_dprintk("pulse distance decoding error\n");
377 ir_dprintk("pulse distance decoded: %x\n", ircode
);
379 if (ircode
== 0) { /* key still pressed */
380 ir_dprintk("pulse distance decoded repeat code\n");
381 ir
->release
= jiffies
+ msecs_to_jiffies(120);
385 if ((ircode
& 0xffff) != (ir
->sampling
& 0xffff)) { /* wrong address */
386 ir_dprintk("pulse distance decoded wrong address\n");
390 if (((~ircode
>> 24) & 0xff) != ((ircode
>> 16) & 0xff)) { /* wrong checksum */
391 ir_dprintk("pulse distance decoded wrong check sum\n");
395 ir_dprintk("Key Code: %x\n", (ircode
>> 16) & 0x7f);
397 ir_input_keydown(ir
->input
, &ir
->ir
, (ircode
>> 16) & 0x7f, (ircode
>> 16) & 0xff);
398 ir
->release
= jiffies
+ msecs_to_jiffies(120);
400 case CX88_BOARD_HAUPPAUGE
:
401 case CX88_BOARD_HAUPPAUGE_DVB_T1
:
402 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1
:
403 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1
:
404 case CX88_BOARD_HAUPPAUGE_HVR1100
:
405 ircode
= ir_decode_biphase(ir
->samples
, ir
->scount
, 5, 7);
406 ir_dprintk("biphase decoded: %x\n", ircode
);
407 if ((ircode
& 0xfffff000) != 0x3000)
409 ir_input_keydown(ir
->input
, &ir
->ir
, ircode
& 0x3f, ircode
);
410 ir
->release
= jiffies
+ msecs_to_jiffies(120);
418 /* ---------------------------------------------------------------------- */
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");