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linux/drivers/media/video/ir-kbd-gpio.c

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/*
* $Id: ir-kbd-gpio.c,v 1.12 2005/02/22 12:28:40 kraxel Exp $
*
* Copyright (c) 2003 Gerd Knorr
* Copyright (c) 2003 Pavel Machek
*
* 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/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/pci.h>
#include <media/ir-common.h>
#include "bttv.h"
/* ---------------------------------------------------------------------- */
static IR_KEYTAB_TYPE ir_codes_avermedia[IR_KEYTAB_SIZE] = {
[ 34 ] = KEY_KP0,
[ 40 ] = KEY_KP1,
[ 24 ] = KEY_KP2,
[ 56 ] = KEY_KP3,
[ 36 ] = KEY_KP4,
[ 20 ] = KEY_KP5,
[ 52 ] = KEY_KP6,
[ 44 ] = KEY_KP7,
[ 28 ] = KEY_KP8,
[ 60 ] = KEY_KP9,
[ 48 ] = KEY_EJECTCD, // Unmarked on my controller
[ 0 ] = KEY_POWER,
[ 18 ] = BTN_LEFT, // DISPLAY/L
[ 50 ] = BTN_RIGHT, // LOOP/R
[ 10 ] = KEY_MUTE,
[ 38 ] = KEY_RECORD,
[ 22 ] = KEY_PAUSE,
[ 54 ] = KEY_STOP,
[ 30 ] = KEY_VOLUMEDOWN,
[ 62 ] = KEY_VOLUMEUP,
[ 32 ] = KEY_TUNER, // TV/FM
[ 16 ] = KEY_CD,
[ 8 ] = KEY_VIDEO,
[ 4 ] = KEY_AUDIO,
[ 12 ] = KEY_ZOOM, // full screen
[ 2 ] = KEY_INFO, // preview
[ 42 ] = KEY_SEARCH, // autoscan
[ 26 ] = KEY_STOP, // freeze
[ 58 ] = KEY_RECORD, // capture
[ 6 ] = KEY_PLAY, // unmarked
[ 46 ] = KEY_RED, // unmarked
[ 14 ] = KEY_GREEN, // unmarked
[ 33 ] = KEY_YELLOW, // unmarked
[ 17 ] = KEY_CHANNELDOWN,
[ 49 ] = KEY_CHANNELUP,
[ 1 ] = KEY_BLUE, // unmarked
};
/* Matt Jesson <dvb@jesson.eclipse.co.uk */
static IR_KEYTAB_TYPE ir_codes_avermedia_dvbt[IR_KEYTAB_SIZE] = {
[ 0x28 ] = KEY_KP0, //'0' / 'enter'
[ 0x22 ] = KEY_KP1, //'1'
[ 0x12 ] = KEY_KP2, //'2' / 'up arrow'
[ 0x32 ] = KEY_KP3, //'3'
[ 0x24 ] = KEY_KP4, //'4' / 'left arrow'
[ 0x14 ] = KEY_KP5, //'5'
[ 0x34 ] = KEY_KP6, //'6' / 'right arrow'
[ 0x26 ] = KEY_KP7, //'7'
[ 0x16 ] = KEY_KP8, //'8' / 'down arrow'
[ 0x36 ] = KEY_KP9, //'9'
[ 0x20 ] = KEY_LIST, // 'source'
[ 0x10 ] = KEY_TEXT, // 'teletext'
[ 0x00 ] = KEY_POWER, // 'power'
[ 0x04 ] = KEY_AUDIO, // 'audio'
[ 0x06 ] = KEY_ZOOM, // 'full screen'
[ 0x18 ] = KEY_VIDEO, // 'display'
[ 0x38 ] = KEY_SEARCH, // 'loop'
[ 0x08 ] = KEY_INFO, // 'preview'
[ 0x2a ] = KEY_REWIND, // 'backward <<'
[ 0x1a ] = KEY_FASTFORWARD, // 'forward >>'
[ 0x3a ] = KEY_RECORD, // 'capture'
[ 0x0a ] = KEY_MUTE, // 'mute'
[ 0x2c ] = KEY_RECORD, // 'record'
[ 0x1c ] = KEY_PAUSE, // 'pause'
[ 0x3c ] = KEY_STOP, // 'stop'
[ 0x0c ] = KEY_PLAY, // 'play'
[ 0x2e ] = KEY_RED, // 'red'
[ 0x01 ] = KEY_BLUE, // 'blue' / 'cancel'
[ 0x0e ] = KEY_YELLOW, // 'yellow' / 'ok'
[ 0x21 ] = KEY_GREEN, // 'green'
[ 0x11 ] = KEY_CHANNELDOWN, // 'channel -'
[ 0x31 ] = KEY_CHANNELUP, // 'channel +'
[ 0x1e ] = KEY_VOLUMEDOWN, // 'volume -'
[ 0x3e ] = KEY_VOLUMEUP, // 'volume +'
};
static IR_KEYTAB_TYPE ir_codes_pixelview[IR_KEYTAB_SIZE] = {
[ 2 ] = KEY_KP0,
[ 1 ] = KEY_KP1,
[ 11 ] = KEY_KP2,
[ 27 ] = KEY_KP3,
[ 5 ] = KEY_KP4,
[ 9 ] = KEY_KP5,
[ 21 ] = KEY_KP6,
[ 6 ] = KEY_KP7,
[ 10 ] = KEY_KP8,
[ 18 ] = KEY_KP9,
[ 3 ] = KEY_TUNER, // TV/FM
[ 7 ] = KEY_SEARCH, // scan
[ 28 ] = KEY_ZOOM, // full screen
[ 30 ] = KEY_POWER,
[ 23 ] = KEY_VOLUMEDOWN,
[ 31 ] = KEY_VOLUMEUP,
[ 20 ] = KEY_CHANNELDOWN,
[ 22 ] = KEY_CHANNELUP,
[ 24 ] = KEY_MUTE,
[ 0 ] = KEY_LIST, // source
[ 19 ] = KEY_INFO, // loop
[ 16 ] = KEY_LAST, // +100
[ 13 ] = KEY_CLEAR, // reset
[ 12 ] = BTN_RIGHT, // fun++
[ 4 ] = BTN_LEFT, // fun--
[ 14 ] = KEY_GOTO, // function
[ 15 ] = KEY_STOP, // freeze
};
/* Attila Kondoros <attila.kondoros@chello.hu> */
static IR_KEYTAB_TYPE ir_codes_apac_viewcomp[IR_KEYTAB_SIZE] = {
[ 1 ] = KEY_KP1,
[ 2 ] = KEY_KP2,
[ 3 ] = KEY_KP3,
[ 4 ] = KEY_KP4,
[ 5 ] = KEY_KP5,
[ 6 ] = KEY_KP6,
[ 7 ] = KEY_KP7,
[ 8 ] = KEY_KP8,
[ 9 ] = KEY_KP9,
[ 0 ] = KEY_KP0,
[ 23 ] = KEY_LAST, // +100
[ 10 ] = KEY_LIST, // recall
[ 28 ] = KEY_TUNER, // TV/FM
[ 21 ] = KEY_SEARCH, // scan
[ 18 ] = KEY_POWER, // power
[ 31 ] = KEY_VOLUMEDOWN, // vol up
[ 27 ] = KEY_VOLUMEUP, // vol down
[ 30 ] = KEY_CHANNELDOWN, // chn up
[ 26 ] = KEY_CHANNELUP, // chn down
[ 17 ] = KEY_VIDEO, // video
[ 15 ] = KEY_ZOOM, // full screen
[ 19 ] = KEY_MUTE, // mute/unmute
[ 16 ] = KEY_TEXT, // min
[ 13 ] = KEY_STOP, // freeze
[ 14 ] = KEY_RECORD, // record
[ 29 ] = KEY_PLAYPAUSE, // stop
[ 25 ] = KEY_PLAY, // play
[ 22 ] = KEY_GOTO, // osd
[ 20 ] = KEY_REFRESH, // default
[ 12 ] = KEY_KPPLUS, // fine tune >>>>
[ 24 ] = KEY_KPMINUS // fine tune <<<<
};
/* ---------------------------------------------------------------------- */
struct IR {
struct bttv_sub_device *sub;
struct input_dev input;
struct ir_input_state ir;
char name[32];
char phys[32];
u32 mask_keycode;
u32 mask_keydown;
u32 mask_keyup;
int polling;
u32 last_gpio;
struct work_struct work;
struct timer_list timer;
};
static int debug;
module_param(debug, int, 0644); /* debug level (0,1,2) */
#define DEVNAME "ir-kbd-gpio"
#define dprintk(fmt, arg...) if (debug) \
printk(KERN_DEBUG DEVNAME ": " fmt , ## arg)
static void ir_irq(struct bttv_sub_device *sub);
static int ir_probe(struct device *dev);
static int ir_remove(struct device *dev);
static struct bttv_sub_driver driver = {
.drv = {
.name = DEVNAME,
.probe = ir_probe,
.remove = ir_remove,
},
.gpio_irq = ir_irq,
};
/* ---------------------------------------------------------------------- */
static void ir_handle_key(struct IR *ir)
{
u32 gpio,data;
/* read gpio value */
gpio = bttv_gpio_read(ir->sub->core);
if (ir->polling) {
if (ir->last_gpio == gpio)
return;
ir->last_gpio = gpio;
}
/* extract data */
data = ir_extract_bits(gpio, ir->mask_keycode);
dprintk(DEVNAME ": 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 disturgissh keydown/up :-/ */
ir_input_keydown(&ir->input,&ir->ir,data,data);
ir_input_nokey(&ir->input,&ir->ir);
}
}
static void ir_irq(struct bttv_sub_device *sub)
{
struct IR *ir = dev_get_drvdata(&sub->dev);
if (!ir->polling)
ir_handle_key(ir);
}
static void ir_timer(unsigned long data)
{
struct IR *ir = (struct IR*)data;
schedule_work(&ir->work);
}
static void ir_work(void *data)
{
struct IR *ir = data;
unsigned long timeout;
ir_handle_key(ir);
timeout = jiffies + (ir->polling * HZ / 1000);
mod_timer(&ir->timer, timeout);
}
/* ---------------------------------------------------------------------- */
static int ir_probe(struct device *dev)
{
struct bttv_sub_device *sub = to_bttv_sub_dev(dev);
struct 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 (sub->core->type) {
case BTTV_AVERMEDIA:
case BTTV_AVPHONE98:
case BTTV_AVERMEDIA98:
ir_codes = ir_codes_avermedia;
ir->mask_keycode = 0xf88000;
ir->mask_keydown = 0x010000;
ir->polling = 50; // ms
break;
case BTTV_AVDVBT_761:
case BTTV_AVDVBT_771:
ir_codes = ir_codes_avermedia_dvbt;
ir->mask_keycode = 0x0f00c0;
ir->mask_keydown = 0x000020;
ir->polling = 50; // ms
break;
case BTTV_PXELVWPLTVPAK:
ir_codes = ir_codes_pixelview;
ir->mask_keycode = 0x003e00;
ir->mask_keyup = 0x010000;
ir->polling = 50; // ms
break;
case BTTV_PV_BT878P_9B:
case BTTV_PV_BT878P_PLUS:
ir_codes = ir_codes_pixelview;
ir->mask_keycode = 0x001f00;
ir->mask_keyup = 0x008000;
ir->polling = 50; // ms
break;
case BTTV_WINFAST2000:
ir_codes = ir_codes_winfast;
ir->mask_keycode = 0x1f8;
break;
case BTTV_MAGICTVIEW061:
case BTTV_MAGICTVIEW063:
ir_codes = ir_codes_winfast;
ir->mask_keycode = 0x0008e000;
ir->mask_keydown = 0x00200000;
break;
case BTTV_APAC_VIEWCOMP:
ir_codes = ir_codes_apac_viewcomp;
ir->mask_keycode = 0x001f00;
ir->mask_keyup = 0x008000;
ir->polling = 50; // ms
break;
}
if (NULL == ir_codes) {
kfree(ir);
return -ENODEV;
}
/* init hardware-specific stuff */
bttv_gpio_inout(sub->core, ir->mask_keycode | ir->mask_keydown, 0);
ir->sub = sub;
/* init input device */
snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
sub->core->type);
snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
pci_name(sub->core->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 (sub->core->pci->subsystem_vendor) {
ir->input.id.vendor = sub->core->pci->subsystem_vendor;
ir->input.id.product = sub->core->pci->subsystem_device;
} else {
ir->input.id.vendor = sub->core->pci->vendor;
ir->input.id.product = sub->core->pci->device;
}
if (ir->polling) {
INIT_WORK(&ir->work, ir_work, ir);
init_timer(&ir->timer);
ir->timer.function = ir_timer;
ir->timer.data = (unsigned long)ir;
schedule_work(&ir->work);
}
/* all done */
dev_set_drvdata(dev,ir);
input_register_device(&ir->input);
printk(DEVNAME ": %s detected at %s\n",ir->input.name,ir->input.phys);
return 0;
}
static int ir_remove(struct device *dev)
{
struct IR *ir = dev_get_drvdata(dev);
if (ir->polling) {
del_timer(&ir->timer);
flush_scheduled_work();
}
input_unregister_device(&ir->input);
kfree(ir);
return 0;
}
/* ---------------------------------------------------------------------- */
MODULE_AUTHOR("Gerd Knorr, Pavel Machek");
MODULE_DESCRIPTION("input driver for bt8x8 gpio IR remote controls");
MODULE_LICENSE("GPL");
static int ir_init(void)
{
return bttv_sub_register(&driver, "remote");
}
static void ir_fini(void)
{
bttv_sub_unregister(&driver);
}
module_init(ir_init);
module_exit(ir_fini);
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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