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
;
76 gpio
= cx_read(ir
->gpio_addr
);
78 if (ir
->last_gpio
== gpio
)
84 data
= ir_extract_bits(gpio
, ir
->mask_keycode
);
85 ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
87 ir
->polling
? "poll" : "irq",
88 (gpio
& ir
->mask_keydown
) ? " down" : "",
89 (gpio
& ir
->mask_keyup
) ? " up" : "");
91 if (ir
->mask_keydown
) {
92 /* bit set on keydown */
93 if (gpio
& ir
->mask_keydown
) {
94 ir_input_keydown(ir
->input
, &ir
->ir
, data
, data
);
96 ir_input_nokey(ir
->input
, &ir
->ir
);
99 } else if (ir
->mask_keyup
) {
100 /* bit cleared on keydown */
101 if (0 == (gpio
& ir
->mask_keyup
)) {
102 ir_input_keydown(ir
->input
, &ir
->ir
, data
, data
);
104 ir_input_nokey(ir
->input
, &ir
->ir
);
108 /* can't distinguish keydown/up :-/ */
109 ir_input_keydown(ir
->input
, &ir
->ir
, data
, data
);
110 ir_input_nokey(ir
->input
, &ir
->ir
);
114 static void ir_timer(unsigned long data
)
116 struct cx88_IR
*ir
= (struct cx88_IR
*)data
;
118 schedule_work(&ir
->work
);
121 static void cx88_ir_work(void *data
)
123 struct cx88_IR
*ir
= data
;
124 unsigned long timeout
;
126 cx88_ir_handle_key(ir
);
127 timeout
= jiffies
+ (ir
->polling
* HZ
/ 1000);
128 mod_timer(&ir
->timer
, timeout
);
131 /* ---------------------------------------------------------------------- */
133 int cx88_ir_init(struct cx88_core
*core
, struct pci_dev
*pci
)
136 struct input_dev
*input_dev
;
137 IR_KEYTAB_TYPE
*ir_codes
= NULL
;
138 int ir_type
= IR_TYPE_OTHER
;
140 ir
= kzalloc(sizeof(*ir
), GFP_KERNEL
);
141 input_dev
= input_allocate_device();
142 if (!ir
|| !input_dev
) {
144 input_free_device(input_dev
);
148 ir
->input
= input_dev
;
150 /* detect & configure */
151 switch (core
->board
) {
152 case CX88_BOARD_DNTV_LIVE_DVB_T
:
153 case CX88_BOARD_KWORLD_DVB_T
:
154 case CX88_BOARD_KWORLD_DVB_T_CX22702
:
155 ir_codes
= ir_codes_dntv_live_dvb_t
;
156 ir
->gpio_addr
= MO_GP1_IO
;
157 ir
->mask_keycode
= 0x1f;
158 ir
->mask_keyup
= 0x60;
159 ir
->polling
= 50; /* ms */
161 case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1
:
162 ir_codes
= ir_codes_cinergy_1400
;
163 ir_type
= IR_TYPE_PD
;
164 ir
->sampling
= 0xeb04; /* address */
166 case CX88_BOARD_HAUPPAUGE
:
167 case CX88_BOARD_HAUPPAUGE_DVB_T1
:
168 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1
:
169 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1
:
170 case CX88_BOARD_HAUPPAUGE_HVR1100
:
171 ir_codes
= ir_codes_hauppauge_new
;
172 ir_type
= IR_TYPE_RC5
;
175 case CX88_BOARD_WINFAST2000XP_EXPERT
:
176 ir_codes
= ir_codes_winfast
;
177 ir
->gpio_addr
= MO_GP0_IO
;
178 ir
->mask_keycode
= 0x8f8;
179 ir
->mask_keyup
= 0x100;
180 ir
->polling
= 1; /* ms */
182 case CX88_BOARD_IODATA_GVBCTV7E
:
183 ir_codes
= ir_codes_iodata_bctv7e
;
184 ir
->gpio_addr
= MO_GP0_IO
;
185 ir
->mask_keycode
= 0xfd;
186 ir
->mask_keydown
= 0x02;
187 ir
->polling
= 5; /* ms */
189 case CX88_BOARD_PROLINK_PLAYTVPVR
:
190 case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO
:
191 ir_codes
= ir_codes_pixelview
;
192 ir
->gpio_addr
= MO_GP1_IO
;
193 ir
->mask_keycode
= 0x1f;
194 ir
->mask_keyup
= 0x80;
195 ir
->polling
= 1; /* ms */
197 case CX88_BOARD_KWORLD_LTV883
:
198 ir_codes
= ir_codes_pixelview
;
199 ir
->gpio_addr
= MO_GP1_IO
;
200 ir
->mask_keycode
= 0x1f;
201 ir
->mask_keyup
= 0x60;
202 ir
->polling
= 1; /* ms */
204 case CX88_BOARD_ADSTECH_DVB_T_PCI
:
205 ir_codes
= ir_codes_adstech_dvb_t_pci
;
206 ir
->gpio_addr
= MO_GP1_IO
;
207 ir
->mask_keycode
= 0xbf;
208 ir
->mask_keyup
= 0x40;
209 ir
->polling
= 50; /* ms */
211 case CX88_BOARD_MSI_TVANYWHERE_MASTER
:
212 ir_codes
= ir_codes_msi_tvanywhere
;
213 ir
->gpio_addr
= MO_GP1_IO
;
214 ir
->mask_keycode
= 0x1f;
215 ir
->mask_keyup
= 0x40;
216 ir
->polling
= 1; /* ms */
218 case CX88_BOARD_AVERTV_303
:
219 case CX88_BOARD_AVERTV_STUDIO_303
:
220 ir_codes
= ir_codes_avertv_303
;
221 ir
->gpio_addr
= MO_GP2_IO
;
222 ir
->mask_keycode
= 0xfb;
223 ir
->mask_keydown
= 0x02;
224 ir
->polling
= 50; /* ms */
226 case CX88_BOARD_DNTV_LIVE_DVB_T_PRO
:
227 ir_codes
= ir_codes_dntv_live_dvbt_pro
;
228 ir_type
= IR_TYPE_PD
;
229 ir
->sampling
= 0xff00; /* address */
233 if (NULL
== ir_codes
) {
235 input_free_device(input_dev
);
239 /* init input device */
240 snprintf(ir
->name
, sizeof(ir
->name
), "cx88 IR (%s)",
241 cx88_boards
[core
->board
].name
);
242 snprintf(ir
->phys
, sizeof(ir
->phys
), "pci-%s/ir0", pci_name(pci
));
244 ir_input_init(input_dev
, &ir
->ir
, ir_type
, ir_codes
);
245 input_dev
->name
= ir
->name
;
246 input_dev
->phys
= ir
->phys
;
247 input_dev
->id
.bustype
= BUS_PCI
;
248 input_dev
->id
.version
= 1;
249 if (pci
->subsystem_vendor
) {
250 input_dev
->id
.vendor
= pci
->subsystem_vendor
;
251 input_dev
->id
.product
= pci
->subsystem_device
;
253 input_dev
->id
.vendor
= pci
->vendor
;
254 input_dev
->id
.product
= pci
->device
;
256 input_dev
->cdev
.dev
= &pci
->dev
;
257 /* record handles to ourself */
262 INIT_WORK(&ir
->work
, cx88_ir_work
, ir
);
263 init_timer(&ir
->timer
);
264 ir
->timer
.function
= ir_timer
;
265 ir
->timer
.data
= (unsigned long)ir
;
266 schedule_work(&ir
->work
);
269 core
->pci_irqmask
|= (1 << 18); /* IR_SMP_INT */
270 cx_write(MO_DDS_IO
, 0xa80a80); /* 4 kHz sample rate */
271 cx_write(MO_DDSCFG_IO
, 0x5); /* enable */
275 input_register_device(ir
->input
);
280 int cx88_ir_fini(struct cx88_core
*core
)
282 struct cx88_IR
*ir
= core
->ir
;
284 /* skip detach on non attached boards */
289 cx_write(MO_DDSCFG_IO
, 0x0);
290 core
->pci_irqmask
&= ~(1 << 18);
293 del_timer(&ir
->timer
);
294 flush_scheduled_work();
297 input_unregister_device(ir
->input
);
305 /* ---------------------------------------------------------------------- */
307 void cx88_ir_irq(struct cx88_core
*core
)
309 struct cx88_IR
*ir
= core
->ir
;
318 samples
= cx_read(MO_SAMPLE_IO
);
319 if (0 != samples
&& 0xffffffff != samples
) {
320 /* record sample data */
321 if (ir
->scount
< ARRAY_SIZE(ir
->samples
))
322 ir
->samples
[ir
->scount
++] = samples
;
326 /* nothing to sample */
327 if (ir
->ir
.keypressed
&& time_after(jiffies
, ir
->release
))
328 ir_input_nokey(ir
->input
, &ir
->ir
);
332 /* have a complete sample */
333 if (ir
->scount
< ARRAY_SIZE(ir
->samples
))
334 ir
->samples
[ir
->scount
++] = samples
;
335 for (i
= 0; i
< ir
->scount
; i
++)
336 ir
->samples
[i
] = ~ir
->samples
[i
];
338 ir_dump_samples(ir
->samples
, ir
->scount
);
341 switch (core
->board
) {
342 case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1
:
343 case CX88_BOARD_DNTV_LIVE_DVB_T_PRO
:
344 ircode
= ir_decode_pulsedistance(ir
->samples
, ir
->scount
, 1, 4);
346 if (ircode
== 0xffffffff) { /* decoding error */
347 ir_dprintk("pulse distance decoding error\n");
351 ir_dprintk("pulse distance decoded: %x\n", ircode
);
353 if (ircode
== 0) { /* key still pressed */
354 ir_dprintk("pulse distance decoded repeat code\n");
355 ir
->release
= jiffies
+ msecs_to_jiffies(120);
359 if ((ircode
& 0xffff) != (ir
->sampling
& 0xffff)) { /* wrong address */
360 ir_dprintk("pulse distance decoded wrong address\n");
364 if (((~ircode
>> 24) & 0xff) != ((ircode
>> 16) & 0xff)) { /* wrong checksum */
365 ir_dprintk("pulse distance decoded wrong check sum\n");
369 ir_dprintk("Key Code: %x\n", (ircode
>> 16) & 0x7f);
371 ir_input_keydown(ir
->input
, &ir
->ir
, (ircode
>> 16) & 0x7f, (ircode
>> 16) & 0xff);
372 ir
->release
= jiffies
+ msecs_to_jiffies(120);
374 case CX88_BOARD_HAUPPAUGE
:
375 case CX88_BOARD_HAUPPAUGE_DVB_T1
:
376 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1
:
377 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1
:
378 case CX88_BOARD_HAUPPAUGE_HVR1100
:
379 ircode
= ir_decode_biphase(ir
->samples
, ir
->scount
, 5, 7);
380 ir_dprintk("biphase decoded: %x\n", ircode
);
381 if ((ircode
& 0xfffff000) != 0x3000)
383 ir_input_keydown(ir
->input
, &ir
->ir
, ircode
& 0x3f, ircode
);
384 ir
->release
= jiffies
+ msecs_to_jiffies(120);
392 /* ---------------------------------------------------------------------- */
394 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
395 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
396 MODULE_LICENSE("GPL");