drivers/media/video/cx88/cx88-input.c - linux - Git at Google

 /*
  * $Id: cx88-input.c,v 1.13 2005/06/13 16:07:46 nsh Exp $
  *
  * 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?'
 	[ 0x01 ] = KEY_KP1,         // '1'
 	[ 0x02 ] = KEY_KP2,         // '2'
 	[ 0x03 ] = KEY_KP3,         // '3'
 	[ 0x04 ] = KEY_KP4,         // '4'
 	[ 0x05 ] = KEY_KP5,         // '5'
 	[ 0x06 ] = KEY_KP6,         // '6'
 	[ 0x07 ] = KEY_KP7,         // '7'
 	[ 0x08 ] = KEY_KP8,         // '8'
 	[ 0x09 ] = KEY_KP9,         // '9'
 	[ 0x0a ] = KEY_KP0,         // '0'
 	[ 0x0b ] = KEY_TUNER,       // 'tv/fm'
 	[ 0x0c ] = KEY_SEARCH,      // 'scan'
 	[ 0x0d ] = KEY_STOP,        // 'stop'
 	[ 0x0e ] = KEY_PAUSE,       // 'pause'
 	[ 0x0f ] = KEY_LIST,        // 'source'

 	[ 0x10 ] = KEY_MUTE,        // 'mute'
 	[ 0x11 ] = KEY_REWIND,      // 'backward <<'
 	[ 0x12 ] = KEY_POWER,       // 'power'
 	[ 0x13 ] = KEY_S,           // 'snap'
 	[ 0x14 ] = KEY_AUDIO,       // 'stereo'
 	[ 0x15 ] = KEY_CLEAR,       // 'reset'
 	[ 0x16 ] = KEY_PLAY,        // 'play'
 	[ 0x17 ] = KEY_ENTER,       // 'enter'
 	[ 0x18 ] = KEY_ZOOM,        // 'full screen'
 	[ 0x19 ] = KEY_FASTFORWARD, // 'forward >>'
 	[ 0x1a ] = KEY_CHANNELUP,   // 'channel +'
 	[ 0x1b ] = KEY_VOLUMEUP,    // 'volume +'
 	[ 0x1c ] = KEY_INFO,        // 'preview'
 	[ 0x1d ] = KEY_RECORD,      // 'record'
 	[ 0x1e ] = KEY_CHANNELDOWN, // 'channel -'
 	[ 0x1f ] = KEY_VOLUMEDOWN,  // 'volume -'
 };

 /* ---------------------------------------------------------------------- */

 /* IO-DATA BCTV7E Remote */
 static IR_KEYTAB_TYPE ir_codes_iodata_bctv7e[IR_KEYTAB_SIZE] = {
 	[ 0x40 ] = KEY_TV,              // TV
 	[ 0x20 ] = KEY_RADIO,           // FM
 	[ 0x60 ] = KEY_EPG,             // EPG
 	[ 0x00 ] = KEY_POWER,           // power

 	[ 0x50 ] = KEY_KP1,             // 1
 	[ 0x30 ] = KEY_KP2,             // 2
 	[ 0x70 ] = KEY_KP3,             // 3
 	[ 0x10 ] = KEY_L,               // Live

 	[ 0x48 ] = KEY_KP4,             // 4
 	[ 0x28 ] = KEY_KP5,             // 5
 	[ 0x68 ] = KEY_KP6,             // 6
 	[ 0x08 ] = KEY_T,               // Time Shift

 	[ 0x58 ] = KEY_KP7,             // 7
 	[ 0x38 ] = KEY_KP8,             // 8
 	[ 0x78 ] = KEY_KP9,             // 9
 	[ 0x18 ] = KEY_PLAYPAUSE,       // Play

 	[ 0x44 ] = KEY_KP0,             // 10
 	[ 0x24 ] = KEY_ENTER,           // 11
 	[ 0x64 ] = KEY_ESC,             // 12
 	[ 0x04 ] = KEY_M,               // Multi

 	[ 0x54 ] = KEY_VIDEO,           // VIDEO
 	[ 0x34 ] = KEY_CHANNELUP,       // channel +
 	[ 0x74 ] = KEY_VOLUMEUP,        // volume +
 	[ 0x14 ] = KEY_MUTE,            // Mute

 	[ 0x4c ] = KEY_S,               // SVIDEO
 	[ 0x2c ] = KEY_CHANNELDOWN,     // channel -
 	[ 0x6c ] = KEY_VOLUMEDOWN,      // volume -
 	[ 0x0c ] = KEY_ZOOM,            // Zoom

 	[ 0x5c ] = KEY_PAUSE,           // pause
 	[ 0x3c ] = KEY_C,               // || (red)
 	[ 0x7c ] = KEY_RECORD,          // recording
 	[ 0x1c ] = KEY_STOP,            // stop

 	[ 0x41 ] = KEY_REWIND,          // backward <<
 	[ 0x21 ] = KEY_PLAY,            // 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] = {
 	[ 0x5b ] = KEY_POWER,
 	[ 0x5f ] = KEY_MUTE,
 	[ 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,
 	[ 0x4d ] = KEY_0,
 	[ 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] = {
        [ 0x00 ] = KEY_0,           /* '0' */
        [ 0x01 ] = KEY_1,           /* '1' */
        [ 0x02 ] = KEY_2,           /* '2' */
        [ 0x03 ] = KEY_3,           /* '3' */
        [ 0x04 ] = KEY_4,           /* '4' */
        [ 0x05 ] = KEY_5,           /* '5' */
        [ 0x06 ] = KEY_6,           /* '6' */
        [ 0x07 ] = KEY_7,           /* '7' */
        [ 0x08 ] = KEY_8,           /* '8' */
        [ 0x09 ] = KEY_9,           /* '9' */
        [ 0x0c ] = KEY_MUTE,        /* 'Mute' */
        [ 0x0f ] = KEY_SCREEN,      /* 'Full Screen' */
        [ 0x10 ] = KEY_F,           /* 'Funtion' */
        [ 0x11 ] = KEY_T,           /* 'Time shift' */
        [ 0x12 ] = KEY_POWER,       /* 'Power' */
        [ 0x13 ] = KEY_MEDIA,       /* 'MTS' */
        [ 0x14 ] = KEY_SLOW,        /* 'Slow' */
        [ 0x16 ] = KEY_REWIND,      /* 'backward <<' */
        [ 0x17 ] = KEY_ENTER,       /* 'Return' */
        [ 0x18 ] = KEY_FASTFORWARD, /* 'forward >>' */
        [ 0x1a ] = KEY_CHANNELUP,   /* 'Channel+' */
        [ 0x1b ] = KEY_VOLUMEUP,    /* 'Volume+' */
        [ 0x1e ] = KEY_CHANNELDOWN, /* 'Channel-' */
        [ 0x1f ] = KEY_VOLUMEDOWN,  /* 'Volume-' */
 };

 /* ---------------------------------------------------------------------- */

 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_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;
                 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;
 	}

 	/* 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,rc5;
 	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_HAUPPAUGE:
 	case CX88_BOARD_HAUPPAUGE_DVB_T1:
 		rc5 = ir_decode_biphase(ir->samples,ir->scount,5,7);
 		ir_dprintk("biphase decoded: %x\n",rc5);
 		if ((rc5 & 0xfffff000) != 0x3000)
 			break;
 		ir_input_keydown(&ir->input, &ir->ir, rc5 & 0x3f, rc5);
 		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:
  */
	/*
	* $Id: cx88-input.c,v 1.13 2005/06/13 16:07:46 nsh Exp $
	*
	* 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?'
	[ 0x01 ] = KEY_KP1, // '1'
	[ 0x02 ] = KEY_KP2, // '2'
	[ 0x03 ] = KEY_KP3, // '3'
	[ 0x04 ] = KEY_KP4, // '4'
	[ 0x05 ] = KEY_KP5, // '5'
	[ 0x06 ] = KEY_KP6, // '6'
	[ 0x07 ] = KEY_KP7, // '7'
	[ 0x08 ] = KEY_KP8, // '8'
	[ 0x09 ] = KEY_KP9, // '9'
	[ 0x0a ] = KEY_KP0, // '0'
	[ 0x0b ] = KEY_TUNER, // 'tv/fm'
	[ 0x0c ] = KEY_SEARCH, // 'scan'
	[ 0x0d ] = KEY_STOP, // 'stop'
	[ 0x0e ] = KEY_PAUSE, // 'pause'
	[ 0x0f ] = KEY_LIST, // 'source'

	[ 0x10 ] = KEY_MUTE, // 'mute'
	[ 0x11 ] = KEY_REWIND, // 'backward <<'
	[ 0x12 ] = KEY_POWER, // 'power'
	[ 0x13 ] = KEY_S, // 'snap'
	[ 0x14 ] = KEY_AUDIO, // 'stereo'
	[ 0x15 ] = KEY_CLEAR, // 'reset'
	[ 0x16 ] = KEY_PLAY, // 'play'
	[ 0x17 ] = KEY_ENTER, // 'enter'
	[ 0x18 ] = KEY_ZOOM, // 'full screen'
	[ 0x19 ] = KEY_FASTFORWARD, // 'forward >>'
	[ 0x1a ] = KEY_CHANNELUP, // 'channel +'
	[ 0x1b ] = KEY_VOLUMEUP, // 'volume +'
	[ 0x1c ] = KEY_INFO, // 'preview'
	[ 0x1d ] = KEY_RECORD, // 'record'
	[ 0x1e ] = KEY_CHANNELDOWN, // 'channel -'
	[ 0x1f ] = KEY_VOLUMEDOWN, // 'volume -'
	};

	/* ---------------------------------------------------------------------- */

	/* IO-DATA BCTV7E Remote */
	static IR_KEYTAB_TYPE ir_codes_iodata_bctv7e[IR_KEYTAB_SIZE] = {
	[ 0x40 ] = KEY_TV, // TV
	[ 0x20 ] = KEY_RADIO, // FM
	[ 0x60 ] = KEY_EPG, // EPG
	[ 0x00 ] = KEY_POWER, // power

	[ 0x50 ] = KEY_KP1, // 1
	[ 0x30 ] = KEY_KP2, // 2
	[ 0x70 ] = KEY_KP3, // 3
	[ 0x10 ] = KEY_L, // Live

	[ 0x48 ] = KEY_KP4, // 4
	[ 0x28 ] = KEY_KP5, // 5
	[ 0x68 ] = KEY_KP6, // 6
	[ 0x08 ] = KEY_T, // Time Shift

	[ 0x58 ] = KEY_KP7, // 7
	[ 0x38 ] = KEY_KP8, // 8
	[ 0x78 ] = KEY_KP9, // 9
	[ 0x18 ] = KEY_PLAYPAUSE, // Play

	[ 0x44 ] = KEY_KP0, // 10
	[ 0x24 ] = KEY_ENTER, // 11
	[ 0x64 ] = KEY_ESC, // 12
	[ 0x04 ] = KEY_M, // Multi

	[ 0x54 ] = KEY_VIDEO, // VIDEO
	[ 0x34 ] = KEY_CHANNELUP, // channel +
	[ 0x74 ] = KEY_VOLUMEUP, // volume +
	[ 0x14 ] = KEY_MUTE, // Mute

	[ 0x4c ] = KEY_S, // SVIDEO
	[ 0x2c ] = KEY_CHANNELDOWN, // channel -
	[ 0x6c ] = KEY_VOLUMEDOWN, // volume -
	[ 0x0c ] = KEY_ZOOM, // Zoom

	[ 0x5c ] = KEY_PAUSE, // pause
	[ 0x3c ] = KEY_C, // \|\| (red)
	[ 0x7c ] = KEY_RECORD, // recording
	[ 0x1c ] = KEY_STOP, // stop

	[ 0x41 ] = KEY_REWIND, // backward <<
	[ 0x21 ] = KEY_PLAY, // 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] = {
	[ 0x5b ] = KEY_POWER,
	[ 0x5f ] = KEY_MUTE,
	[ 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,
	[ 0x4d ] = KEY_0,
	[ 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] = {
	[ 0x00 ] = KEY_0, /* '0' */
	[ 0x01 ] = KEY_1, /* '1' */
	[ 0x02 ] = KEY_2, /* '2' */
	[ 0x03 ] = KEY_3, /* '3' */
	[ 0x04 ] = KEY_4, /* '4' */
	[ 0x05 ] = KEY_5, /* '5' */
	[ 0x06 ] = KEY_6, /* '6' */
	[ 0x07 ] = KEY_7, /* '7' */
	[ 0x08 ] = KEY_8, /* '8' */
	[ 0x09 ] = KEY_9, /* '9' */
	[ 0x0c ] = KEY_MUTE, /* 'Mute' */
	[ 0x0f ] = KEY_SCREEN, /* 'Full Screen' */
	[ 0x10 ] = KEY_F, /* 'Funtion' */
	[ 0x11 ] = KEY_T, /* 'Time shift' */
	[ 0x12 ] = KEY_POWER, /* 'Power' */
	[ 0x13 ] = KEY_MEDIA, /* 'MTS' */
	[ 0x14 ] = KEY_SLOW, /* 'Slow' */
	[ 0x16 ] = KEY_REWIND, /* 'backward <<' */
	[ 0x17 ] = KEY_ENTER, /* 'Return' */
	[ 0x18 ] = KEY_FASTFORWARD, /* 'forward >>' */
	[ 0x1a ] = KEY_CHANNELUP, /* 'Channel+' */
	[ 0x1b ] = KEY_VOLUMEUP, /* 'Volume+' */
	[ 0x1e ] = KEY_CHANNELDOWN, /* 'Channel-' */
	[ 0x1f ] = KEY_VOLUMEDOWN, /* 'Volume-' */
	};

	/* ---------------------------------------------------------------------- */

	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_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;
	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;
	}

	/* 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,rc5;
	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_HAUPPAUGE:
	case CX88_BOARD_HAUPPAUGE_DVB_T1:
	rc5 = ir_decode_biphase(ir->samples,ir->scount,5,7);
	ir_dprintk("biphase decoded: %x\n",rc5);
	if ((rc5 & 0xfffff000) != 0x3000)
	break;
	ir_input_keydown(&ir->input, &ir->ir, rc5 & 0x3f, rc5);
	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:
	*/