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67e49a1abe
linux/drivers/media/video/cx88/cx88-input.c
Mauro Carvalho Chehab 67e49a1abe [PATCH] v4l: make the input event device for IR matchable by udev rules. 
- Makes the input event device created by the V4L drivers for the
  infrared remote matchable by udev rules.

Signed-off-by: Rudo Thomas <rudo@matfyz.cz>
Signed-off-by: Michael Fair <michael@daclubhouse.net>
Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:53 -07:00

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/*
*
* Device driver for GPIO attached remote control interfaces
* on Conexant 2388x based TV/DVB cards.
*
* Copyright (c) 2003 Pavel Machek
* Copyright (c) 2004 Gerd Knorr
* Copyright (c) 2004 Chris Pascoe
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/pci.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <media/ir-common.h>
#include "cx88.h"
/* ---------------------------------------------------------------------- */
/* DigitalNow DNTV Live DVB-T Remote */
static IR_KEYTAB_TYPE ir_codes_dntv_live_dvb_t[IR_KEYTAB_SIZE] = {
[0x00] = KEY_ESC, /* 'go up a level?' */
/* Keys 0 to 9 */
[0x0a] = KEY_KP0,
[0x01] = KEY_KP1,
[0x02] = KEY_KP2,
[0x03] = KEY_KP3,
[0x04] = KEY_KP4,
[0x05] = KEY_KP5,
[0x06] = KEY_KP6,
[0x07] = KEY_KP7,
[0x08] = KEY_KP8,
[0x09] = KEY_KP9,
[0x0b] = KEY_TUNER, /* tv/fm */
[0x0c] = KEY_SEARCH, /* scan */
[0x0d] = KEY_STOP,
[0x0e] = KEY_PAUSE,
[0x0f] = KEY_LIST, /* source */
[0x10] = KEY_MUTE,
[0x11] = KEY_REWIND, /* backward << */
[0x12] = KEY_POWER,
[0x13] = KEY_S, /* snap */
[0x14] = KEY_AUDIO, /* stereo */
[0x15] = KEY_CLEAR, /* reset */
[0x16] = KEY_PLAY,
[0x17] = KEY_ENTER,
[0x18] = KEY_ZOOM, /* full screen */
[0x19] = KEY_FASTFORWARD, /* forward >> */
[0x1a] = KEY_CHANNELUP,
[0x1b] = KEY_VOLUMEUP,
[0x1c] = KEY_INFO, /* preview */
[0x1d] = KEY_RECORD, /* record */
[0x1e] = KEY_CHANNELDOWN,
[0x1f] = KEY_VOLUMEDOWN,
};
/* ---------------------------------------------------------------------- */
/* IO-DATA BCTV7E Remote */
static IR_KEYTAB_TYPE ir_codes_iodata_bctv7e[IR_KEYTAB_SIZE] = {
[0x40] = KEY_TV,
[0x20] = KEY_RADIO, /* FM */
[0x60] = KEY_EPG,
[0x00] = KEY_POWER,
/* Keys 0 to 9 */
[0x44] = KEY_KP0, /* 10 */
[0x50] = KEY_KP1,
[0x30] = KEY_KP2,
[0x70] = KEY_KP3,
[0x48] = KEY_KP4,
[0x28] = KEY_KP5,
[0x68] = KEY_KP6,
[0x58] = KEY_KP7,
[0x38] = KEY_KP8,
[0x78] = KEY_KP9,
[0x10] = KEY_L, /* Live */
[0x08] = KEY_T, /* Time Shift */
[0x18] = KEY_PLAYPAUSE, /* Play */
[0x24] = KEY_ENTER, /* 11 */
[0x64] = KEY_ESC, /* 12 */
[0x04] = KEY_M, /* Multi */
[0x54] = KEY_VIDEO,
[0x34] = KEY_CHANNELUP,
[0x74] = KEY_VOLUMEUP,
[0x14] = KEY_MUTE,
[0x4c] = KEY_S, /* SVIDEO */
[0x2c] = KEY_CHANNELDOWN,
[0x6c] = KEY_VOLUMEDOWN,
[0x0c] = KEY_ZOOM,
[0x5c] = KEY_PAUSE,
[0x3c] = KEY_C, /* || (red) */
[0x7c] = KEY_RECORD, /* recording */
[0x1c] = KEY_STOP,
[0x41] = KEY_REWIND, /* backward << */
[0x21] = KEY_PLAY,
[0x61] = KEY_FASTFORWARD, /* forward >> */
[0x01] = KEY_NEXT, /* skip >| */
};
/* ---------------------------------------------------------------------- */
/* ADS Tech Instant TV DVB-T PCI Remote */
static IR_KEYTAB_TYPE ir_codes_adstech_dvb_t_pci[IR_KEYTAB_SIZE] = {
/* Keys 0 to 9 */
[0x4d] = KEY_0,
[0x57] = KEY_1,
[0x4f] = KEY_2,
[0x53] = KEY_3,
[0x56] = KEY_4,
[0x4e] = KEY_5,
[0x5e] = KEY_6,
[0x54] = KEY_7,
[0x4c] = KEY_8,
[0x5c] = KEY_9,
[0x5b] = KEY_POWER,
[0x5f] = KEY_MUTE,
[0x55] = KEY_GOTO,
[0x5d] = KEY_SEARCH,
[0x17] = KEY_EPG, /* Guide */
[0x1f] = KEY_MENU,
[0x0f] = KEY_UP,
[0x46] = KEY_DOWN,
[0x16] = KEY_LEFT,
[0x1e] = KEY_RIGHT,
[0x0e] = KEY_SELECT, /* Enter */
[0x5a] = KEY_INFO,
[0x52] = KEY_EXIT,
[0x59] = KEY_PREVIOUS,
[0x51] = KEY_NEXT,
[0x58] = KEY_REWIND,
[0x50] = KEY_FORWARD,
[0x44] = KEY_PLAYPAUSE,
[0x07] = KEY_STOP,
[0x1b] = KEY_RECORD,
[0x13] = KEY_TUNER, /* Live */
[0x0a] = KEY_A,
[0x12] = KEY_B,
[0x03] = KEY_PROG1, /* 1 */
[0x01] = KEY_PROG2, /* 2 */
[0x00] = KEY_PROG3, /* 3 */
[0x06] = KEY_DVD,
[0x48] = KEY_AUX, /* Photo */
[0x40] = KEY_VIDEO,
[0x19] = KEY_AUDIO, /* Music */
[0x0b] = KEY_CHANNELUP,
[0x08] = KEY_CHANNELDOWN,
[0x15] = KEY_VOLUMEUP,
[0x1c] = KEY_VOLUMEDOWN,
};
/* ---------------------------------------------------------------------- */
/* MSI TV@nywhere remote */
static IR_KEYTAB_TYPE ir_codes_msi_tvanywhere[IR_KEYTAB_SIZE] = {
/* Keys 0 to 9 */
[0x00] = KEY_0,
[0x01] = KEY_1,
[0x02] = KEY_2,
[0x03] = KEY_3,
[0x04] = KEY_4,
[0x05] = KEY_5,
[0x06] = KEY_6,
[0x07] = KEY_7,
[0x08] = KEY_8,
[0x09] = KEY_9,
[0x0c] = KEY_MUTE,
[0x0f] = KEY_SCREEN, /* Full Screen */
[0x10] = KEY_F, /* Funtion */
[0x11] = KEY_T, /* Time shift */
[0x12] = KEY_POWER,
[0x13] = KEY_MEDIA, /* MTS */
[0x14] = KEY_SLOW,
[0x16] = KEY_REWIND, /* backward << */
[0x17] = KEY_ENTER, /* Return */
[0x18] = KEY_FASTFORWARD, /* forward >> */
[0x1a] = KEY_CHANNELUP,
[0x1b] = KEY_VOLUMEUP,
[0x1e] = KEY_CHANNELDOWN,
[0x1f] = KEY_VOLUMEDOWN,
};
/* ---------------------------------------------------------------------- */
/* Cinergy 1400 DVB-T */
static IR_KEYTAB_TYPE ir_codes_cinergy_1400[IR_KEYTAB_SIZE] = {
[0x01] = KEY_POWER,
[0x02] = KEY_1,
[0x03] = KEY_2,
[0x04] = KEY_3,
[0x05] = KEY_4,
[0x06] = KEY_5,
[0x07] = KEY_6,
[0x08] = KEY_7,
[0x09] = KEY_8,
[0x0a] = KEY_9,
[0x0c] = KEY_0,
[0x0b] = KEY_VIDEO,
[0x0d] = KEY_REFRESH,
[0x0e] = KEY_SELECT,
[0x0f] = KEY_EPG,
[0x10] = KEY_UP,
[0x11] = KEY_LEFT,
[0x12] = KEY_OK,
[0x13] = KEY_RIGHT,
[0x14] = KEY_DOWN,
[0x15] = KEY_TEXT,
[0x16] = KEY_INFO,
[0x17] = KEY_RED,
[0x18] = KEY_GREEN,
[0x19] = KEY_YELLOW,
[0x1a] = KEY_BLUE,
[0x1b] = KEY_CHANNELUP,
[0x1c] = KEY_VOLUMEUP,
[0x1d] = KEY_MUTE,
[0x1e] = KEY_VOLUMEDOWN,
[0x1f] = KEY_CHANNELDOWN,
[0x40] = KEY_PAUSE,
[0x4c] = KEY_PLAY,
[0x58] = KEY_RECORD,
[0x54] = KEY_PREVIOUS,
[0x48] = KEY_STOP,
[0x5c] = KEY_NEXT,
};
/* ---------------------------------------------------------------------- */
struct cx88_IR {
struct cx88_core *core;
struct input_dev input;
struct ir_input_state ir;
char name[32];
char phys[32];
/* sample from gpio pin 16 */
int sampling;
u32 samples[16];
int scount;
unsigned long release;
/* poll external decoder */
int polling;
struct work_struct work;
struct timer_list timer;
u32 gpio_addr;
u32 last_gpio;
u32 mask_keycode;
u32 mask_keydown;
u32 mask_keyup;
};
static int ir_debug = 0;
module_param(ir_debug, int, 0644); /* debug level [IR] */
MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
#define ir_dprintk(fmt, arg...) if (ir_debug) \
printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
/* ---------------------------------------------------------------------- */
static void cx88_ir_handle_key(struct cx88_IR *ir)
{
struct cx88_core *core = ir->core;
u32 gpio, data;
/* read gpio value */
gpio = cx_read(ir->gpio_addr);
if (ir->polling) {
if (ir->last_gpio == gpio)
return;
ir->last_gpio = gpio;
}
/* extract data */
data = ir_extract_bits(gpio, ir->mask_keycode);
ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
gpio, data,
ir->polling ? "poll" : "irq",
(gpio & ir->mask_keydown) ? " down" : "",
(gpio & ir->mask_keyup) ? " up" : "");
if (ir->mask_keydown) {
/* bit set on keydown */
if (gpio & ir->mask_keydown) {
ir_input_keydown(&ir->input, &ir->ir, data, data);
} else {
ir_input_nokey(&ir->input, &ir->ir);
}
} else if (ir->mask_keyup) {
/* bit cleared on keydown */
if (0 == (gpio & ir->mask_keyup)) {
ir_input_keydown(&ir->input, &ir->ir, data, data);
} else {
ir_input_nokey(&ir->input, &ir->ir);
}
} else {
/* can't distinguish keydown/up :-/ */
ir_input_keydown(&ir->input, &ir->ir, data, data);
ir_input_nokey(&ir->input, &ir->ir);
}
}
static void ir_timer(unsigned long data)
{
struct cx88_IR *ir = (struct cx88_IR *)data;
schedule_work(&ir->work);
}
static void cx88_ir_work(void *data)
{
struct cx88_IR *ir = data;
unsigned long timeout;
cx88_ir_handle_key(ir);
timeout = jiffies + (ir->polling * HZ / 1000);
mod_timer(&ir->timer, timeout);
}
/* ---------------------------------------------------------------------- */
int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
{
struct cx88_IR *ir;
IR_KEYTAB_TYPE *ir_codes = NULL;
int ir_type = IR_TYPE_OTHER;
ir = kmalloc(sizeof(*ir), GFP_KERNEL);
if (NULL == ir)
return -ENOMEM;
memset(ir, 0, sizeof(*ir));
/* detect & configure */
switch (core->board) {
case CX88_BOARD_DNTV_LIVE_DVB_T:
case CX88_BOARD_KWORLD_DVB_T:
ir_codes = ir_codes_dntv_live_dvb_t;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keycode = 0x1f;
ir->mask_keyup = 0x60;
ir->polling = 50; /* ms */
break;
case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
ir_codes = ir_codes_cinergy_1400;
ir_type = IR_TYPE_PD;
ir->sampling = 1;
break;
case CX88_BOARD_HAUPPAUGE:
case CX88_BOARD_HAUPPAUGE_DVB_T1:
ir_codes = ir_codes_hauppauge_new;
ir_type = IR_TYPE_RC5;
ir->sampling = 1;
break;
case CX88_BOARD_WINFAST2000XP_EXPERT:
ir_codes = ir_codes_winfast;
ir->gpio_addr = MO_GP0_IO;
ir->mask_keycode = 0x8f8;
ir->mask_keyup = 0x100;
ir->polling = 1; /* ms */
break;
case CX88_BOARD_IODATA_GVBCTV7E:
ir_codes = ir_codes_iodata_bctv7e;
ir->gpio_addr = MO_GP0_IO;
ir->mask_keycode = 0xfd;
ir->mask_keydown = 0x02;
ir->polling = 5; /* ms */
break;
case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
ir_codes = ir_codes_pixelview;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keycode = 0x1f;
ir->mask_keyup = 0x80;
ir->polling = 1; /* ms */
break;
case CX88_BOARD_ADSTECH_DVB_T_PCI:
ir_codes = ir_codes_adstech_dvb_t_pci;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keycode = 0xbf;
ir->mask_keyup = 0x40;
ir->polling = 50; /* ms */
break;
case CX88_BOARD_MSI_TVANYWHERE_MASTER:
ir_codes = ir_codes_msi_tvanywhere;
ir->gpio_addr = MO_GP1_IO;
ir->mask_keycode = 0x1f;
ir->mask_keyup = 0x40;
ir->polling = 1; /* ms */
break;
}
if (NULL == ir_codes) {
kfree(ir);
return -ENODEV;
}
/* init input device */
snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)",
cx88_boards[core->board].name);
snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
ir_input_init(&ir->input, &ir->ir, ir_type, ir_codes);
ir->input.name = ir->name;
ir->input.phys = ir->phys;
ir->input.id.bustype = BUS_PCI;
ir->input.id.version = 1;
if (pci->subsystem_vendor) {
ir->input.id.vendor = pci->subsystem_vendor;
ir->input.id.product = pci->subsystem_device;
} else {
ir->input.id.vendor = pci->vendor;
ir->input.id.product = pci->device;
}
ir->input.dev = &pci->dev;
/* record handles to ourself */
ir->core = core;
core->ir = ir;
if (ir->polling) {
INIT_WORK(&ir->work, cx88_ir_work, ir);
init_timer(&ir->timer);
ir->timer.function = ir_timer;
ir->timer.data = (unsigned long)ir;
schedule_work(&ir->work);
}
if (ir->sampling) {
core->pci_irqmask |= (1 << 18); /* IR_SMP_INT */
cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */
cx_write(MO_DDSCFG_IO, 0x5); /* enable */
}
/* all done */
input_register_device(&ir->input);
printk("%s: registered IR remote control\n", core->name);
return 0;
}
int cx88_ir_fini(struct cx88_core *core)
{
struct cx88_IR *ir = core->ir;
/* skip detach on non attached boards */
if (NULL == ir)
return 0;
if (ir->polling) {
del_timer(&ir->timer);
flush_scheduled_work();
}
input_unregister_device(&ir->input);
kfree(ir);
/* done */
core->ir = NULL;
return 0;
}
/* ---------------------------------------------------------------------- */
void cx88_ir_irq(struct cx88_core *core)
{
struct cx88_IR *ir = core->ir;
u32 samples, ircode;
int i;
if (NULL == ir)
return;
if (!ir->sampling)
return;
samples = cx_read(MO_SAMPLE_IO);
if (0 != samples && 0xffffffff != samples) {
/* record sample data */
if (ir->scount < ARRAY_SIZE(ir->samples))
ir->samples[ir->scount++] = samples;
return;
}
if (!ir->scount) {
/* nothing to sample */
if (ir->ir.keypressed && time_after(jiffies, ir->release))
ir_input_nokey(&ir->input, &ir->ir);
return;
}
/* have a complete sample */
if (ir->scount < ARRAY_SIZE(ir->samples))
ir->samples[ir->scount++] = samples;
for (i = 0; i < ir->scount; i++)
ir->samples[i] = ~ir->samples[i];
if (ir_debug)
ir_dump_samples(ir->samples, ir->scount);
/* decode it */
switch (core->board) {
case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);
if (ircode == 0xffffffff) { /* decoding error */
ir_dprintk("pulse distance decoding error\n");
break;
}
ir_dprintk("pulse distance decoded: %x\n", ircode);
if (ircode == 0) { /* key still pressed */
ir_dprintk("pulse distance decoded repeat code\n");
ir->release = jiffies + msecs_to_jiffies(120);
break;
}
if ((ircode & 0xffff) != 0xeb04) { /* wrong address */
ir_dprintk("pulse distance decoded wrong address\n");
break;
}
if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
ir_dprintk("pulse distance decoded wrong check sum\n");
break;
}
ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);
ir_input_keydown(&ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff);
ir->release = jiffies + msecs_to_jiffies(120);
break;
case CX88_BOARD_HAUPPAUGE:
case CX88_BOARD_HAUPPAUGE_DVB_T1:
ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
ir_dprintk("biphase decoded: %x\n", ircode);
if ((ircode & 0xfffff000) != 0x3000)
break;
ir_input_keydown(&ir->input, &ir->ir, ircode & 0x3f, ircode);
ir->release = jiffies + msecs_to_jiffies(120);
break;
}
ir->scount = 0;
return;
}
/* ---------------------------------------------------------------------- */
MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
MODULE_LICENSE("GPL");
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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