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linux/drivers/media/common/ir-common.c
Tim Schmielau 4e57b68178 [PATCH] fix missing includes 
I recently picked up my older work to remove unnecessary #includes of
sched.h, starting from a patch by Dave Jones to not include sched.h
from module.h. This reduces the number of indirect includes of sched.h
by ~300. Another ~400 pointless direct includes can be removed after
this disentangling (patch to follow later).
However, quite a few indirect includes need to be fixed up for this.

In order to feed the patches through -mm with as little disturbance as
possible, I've split out the fixes I accumulated up to now (complete for
i386 and x86_64, more archs to follow later) and post them before the real
patch.  This way this large part of the patch is kept simple with only
adding #includes, and all hunks are independent of each other.  So if any
hunk rejects or gets in the way of other patches, just drop it.  My scripts
will pick it up again in the next round.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:32 -08:00

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/*
*
* some common structs and functions to handle infrared remotes via
* input layer ...
*
* (c) 2003 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
*
* 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/string.h>
#include <media/ir-common.h>
/* -------------------------------------------------------------------------- */
MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
MODULE_LICENSE("GPL");
static int repeat = 1;
module_param(repeat, int, 0444);
MODULE_PARM_DESC(repeat,"auto-repeat for IR keys (default: on)");
static int debug = 0; /* debug level (0,1,2) */
module_param(debug, int, 0644);
#define dprintk(level, fmt, arg...) if (debug >= level) \
printk(KERN_DEBUG fmt , ## arg)
/* -------------------------------------------------------------------------- */
/* generic RC5 keytable */
/* see http://users.pandora.be/nenya/electronics/rc5/codes00.htm */
/* used by old (black) Hauppauge remotes */
IR_KEYTAB_TYPE ir_codes_rc5_tv[IR_KEYTAB_SIZE] = {
/* Keys 0 to 9 */
[ 0x00 ] = 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_CHANNEL, /* channel / program (japan: 11) */
[ 0x0c ] = KEY_POWER, /* standby */
[ 0x0d ] = KEY_MUTE, /* mute / demute */
[ 0x0f ] = KEY_TV, /* display */
[ 0x10 ] = KEY_VOLUMEUP,
[ 0x11 ] = KEY_VOLUMEDOWN,
[ 0x12 ] = KEY_BRIGHTNESSUP,
[ 0x13 ] = KEY_BRIGHTNESSDOWN,
[ 0x1e ] = KEY_SEARCH, /* search + */
[ 0x20 ] = KEY_CHANNELUP, /* channel / program + */
[ 0x21 ] = KEY_CHANNELDOWN, /* channel / program - */
[ 0x22 ] = KEY_CHANNEL, /* alt / channel */
[ 0x23 ] = KEY_LANGUAGE, /* 1st / 2nd language */
[ 0x26 ] = KEY_SLEEP, /* sleeptimer */
[ 0x2e ] = KEY_MENU, /* 2nd controls (USA: menu) */
[ 0x30 ] = KEY_PAUSE,
[ 0x32 ] = KEY_REWIND,
[ 0x33 ] = KEY_GOTO,
[ 0x35 ] = KEY_PLAY,
[ 0x36 ] = KEY_STOP,
[ 0x37 ] = KEY_RECORD, /* recording */
[ 0x3c ] = KEY_TEXT, /* teletext submode (Japan: 12) */
[ 0x3d ] = KEY_SUSPEND, /* system standby */
};
EXPORT_SYMBOL_GPL(ir_codes_rc5_tv);
/* Table for Leadtek Winfast Remote Controls - used by both bttv and cx88 */
IR_KEYTAB_TYPE ir_codes_winfast[IR_KEYTAB_SIZE] = {
/* Keys 0 to 9 */
[ 18 ] = KEY_KP0,
[ 5 ] = KEY_KP1,
[ 6 ] = KEY_KP2,
[ 7 ] = KEY_KP3,
[ 9 ] = KEY_KP4,
[ 10 ] = KEY_KP5,
[ 11 ] = KEY_KP6,
[ 13 ] = KEY_KP7,
[ 14 ] = KEY_KP8,
[ 15 ] = KEY_KP9,
[ 0 ] = KEY_POWER,
[ 2 ] = KEY_TUNER, /* TV/FM */
[ 30 ] = KEY_VIDEO,
[ 4 ] = KEY_VOLUMEUP,
[ 8 ] = KEY_VOLUMEDOWN,
[ 12 ] = KEY_CHANNELUP,
[ 16 ] = KEY_CHANNELDOWN,
[ 3 ] = KEY_ZOOM, /* fullscreen */
[ 31 ] = KEY_SUBTITLE, /* closed caption/teletext */
[ 32 ] = KEY_SLEEP,
[ 20 ] = KEY_MUTE,
[ 43 ] = KEY_RED,
[ 44 ] = KEY_GREEN,
[ 45 ] = KEY_YELLOW,
[ 46 ] = KEY_BLUE,
[ 24 ] = KEY_KPPLUS, /* fine tune + */
[ 25 ] = KEY_KPMINUS, /* fine tune - */
[ 33 ] = KEY_KPDOT,
[ 19 ] = KEY_KPENTER,
[ 34 ] = KEY_BACK,
[ 35 ] = KEY_PLAYPAUSE,
[ 36 ] = KEY_NEXT,
[ 38 ] = KEY_STOP,
[ 39 ] = KEY_RECORD
};
EXPORT_SYMBOL_GPL(ir_codes_winfast);
/* empty keytable, can be used as placeholder for not-yet created keytables */
IR_KEYTAB_TYPE ir_codes_empty[IR_KEYTAB_SIZE] = {
[ 42 ] = KEY_COFFEE,
};
EXPORT_SYMBOL_GPL(ir_codes_empty);
/* Hauppauge: the newer, gray remotes (seems there are multiple
* slightly different versions), shipped with cx88+ivtv cards.
* almost rc5 coding, but some non-standard keys */
IR_KEYTAB_TYPE ir_codes_hauppauge_new[IR_KEYTAB_SIZE] = {
/* Keys 0 to 9 */
[ 0x00 ] = 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,
[ 0x0a ] = KEY_TEXT, /* keypad asterisk as well */
[ 0x0b ] = KEY_RED, /* red button */
[ 0x0c ] = KEY_RADIO,
[ 0x0d ] = KEY_MENU,
[ 0x0e ] = KEY_SUBTITLE, /* also the # key */
[ 0x0f ] = KEY_MUTE,
[ 0x10 ] = KEY_VOLUMEUP,
[ 0x11 ] = KEY_VOLUMEDOWN,
[ 0x12 ] = KEY_PREVIOUS, /* previous channel */
[ 0x14 ] = KEY_UP,
[ 0x15 ] = KEY_DOWN,
[ 0x16 ] = KEY_LEFT,
[ 0x17 ] = KEY_RIGHT,
[ 0x18 ] = KEY_VIDEO, /* Videos */
[ 0x19 ] = KEY_AUDIO, /* Music */
/* 0x1a: Pictures - presume this means
"Multimedia Home Platform" -
no "PICTURES" key in input.h
*/
[ 0x1a ] = KEY_MHP,
[ 0x1b ] = KEY_EPG, /* Guide */
[ 0x1c ] = KEY_TV,
[ 0x1e ] = KEY_NEXTSONG, /* skip >| */
[ 0x1f ] = KEY_EXIT, /* back/exit */
[ 0x20 ] = KEY_CHANNELUP, /* channel / program + */
[ 0x21 ] = KEY_CHANNELDOWN, /* channel / program - */
[ 0x22 ] = KEY_CHANNEL, /* source (old black remote) */
[ 0x24 ] = KEY_PREVIOUSSONG, /* replay |< */
[ 0x25 ] = KEY_ENTER, /* OK */
[ 0x26 ] = KEY_SLEEP, /* minimize (old black remote) */
[ 0x29 ] = KEY_BLUE, /* blue key */
[ 0x2e ] = KEY_GREEN, /* green button */
[ 0x30 ] = KEY_PAUSE, /* pause */
[ 0x32 ] = KEY_REWIND, /* backward << */
[ 0x34 ] = KEY_FASTFORWARD, /* forward >> */
[ 0x35 ] = KEY_PLAY,
[ 0x36 ] = KEY_STOP,
[ 0x37 ] = KEY_RECORD, /* recording */
[ 0x38 ] = KEY_YELLOW, /* yellow key */
[ 0x3b ] = KEY_SELECT, /* top right button */
[ 0x3c ] = KEY_ZOOM, /* full */
[ 0x3d ] = KEY_POWER, /* system power (green button) */
};
EXPORT_SYMBOL(ir_codes_hauppauge_new);
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 */
};
EXPORT_SYMBOL(ir_codes_pixelview);
/* -------------------------------------------------------------------------- */
static void ir_input_key_event(struct input_dev *dev, struct ir_input_state *ir)
{
if (KEY_RESERVED == ir->keycode) {
printk(KERN_INFO "%s: unknown key: key=0x%02x raw=0x%02x down=%d\n",
dev->name,ir->ir_key,ir->ir_raw,ir->keypressed);
return;
}
dprintk(1,"%s: key event code=%d down=%d\n",
dev->name,ir->keycode,ir->keypressed);
input_report_key(dev,ir->keycode,ir->keypressed);
input_sync(dev);
}
/* -------------------------------------------------------------------------- */
void ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
int ir_type, IR_KEYTAB_TYPE *ir_codes)
{
int i;
ir->ir_type = ir_type;
if (ir_codes)
memcpy(ir->ir_codes, ir_codes, sizeof(ir->ir_codes));
dev->keycode = ir->ir_codes;
dev->keycodesize = sizeof(IR_KEYTAB_TYPE);
dev->keycodemax = IR_KEYTAB_SIZE;
for (i = 0; i < IR_KEYTAB_SIZE; i++)
set_bit(ir->ir_codes[i], dev->keybit);
clear_bit(0, dev->keybit);
set_bit(EV_KEY, dev->evbit);
if (repeat)
set_bit(EV_REP, dev->evbit);
}
void ir_input_nokey(struct input_dev *dev, struct ir_input_state *ir)
{
if (ir->keypressed) {
ir->keypressed = 0;
ir_input_key_event(dev,ir);
}
}
void ir_input_keydown(struct input_dev *dev, struct ir_input_state *ir,
u32 ir_key, u32 ir_raw)
{
u32 keycode = IR_KEYCODE(ir->ir_codes, ir_key);
if (ir->keypressed && ir->keycode != keycode) {
ir->keypressed = 0;
ir_input_key_event(dev,ir);
}
if (!ir->keypressed) {
ir->ir_key = ir_key;
ir->ir_raw = ir_raw;
ir->keycode = keycode;
ir->keypressed = 1;
ir_input_key_event(dev,ir);
}
}
/* -------------------------------------------------------------------------- */
u32 ir_extract_bits(u32 data, u32 mask)
{
int mbit, vbit;
u32 value;
value = 0;
vbit = 0;
for (mbit = 0; mbit < 32; mbit++) {
if (!(mask & ((u32)1 << mbit)))
continue;
if (data & ((u32)1 << mbit))
value |= (1 << vbit);
vbit++;
}
return value;
}
static int inline getbit(u32 *samples, int bit)
{
return (samples[bit/32] & (1 << (31-(bit%32)))) ? 1 : 0;
}
/* sump raw samples for visual debugging ;) */
int ir_dump_samples(u32 *samples, int count)
{
int i, bit, start;
printk(KERN_DEBUG "ir samples: ");
start = 0;
for (i = 0; i < count * 32; i++) {
bit = getbit(samples,i);
if (bit)
start = 1;
if (0 == start)
continue;
printk("%s", bit ? "#" : "_");
}
printk("\n");
return 0;
}
/* decode raw samples, pulse distance coding used by NEC remotes */
int ir_decode_pulsedistance(u32 *samples, int count, int low, int high)
{
int i,last,bit,len;
u32 curBit;
u32 value;
/* find start burst */
for (i = len = 0; i < count * 32; i++) {
bit = getbit(samples,i);
if (bit) {
len++;
} else {
if (len >= 29)
break;
len = 0;
}
}
/* start burst to short */
if (len < 29)
return 0xffffffff;
/* find start silence */
for (len = 0; i < count * 32; i++) {
bit = getbit(samples,i);
if (bit) {
break;
} else {
len++;
}
}
/* silence to short */
if (len < 7)
return 0xffffffff;
/* go decoding */
len = 0;
last = 1;
value = 0; curBit = 1;
for (; i < count * 32; i++) {
bit = getbit(samples,i);
if (last) {
if(bit) {
continue;
} else {
len = 1;
}
} else {
if (bit) {
if (len > (low + high) /2)
value |= curBit;
curBit <<= 1;
if (curBit == 1)
break;
} else {
len++;
}
}
last = bit;
}
return value;
}
/* decode raw samples, biphase coding, used by rc5 for example */
int ir_decode_biphase(u32 *samples, int count, int low, int high)
{
int i,last,bit,len,flips;
u32 value;
/* find start bit (1) */
for (i = 0; i < 32; i++) {
bit = getbit(samples,i);
if (bit)
break;
}
/* go decoding */
len = 0;
flips = 0;
value = 1;
for (; i < count * 32; i++) {
if (len > high)
break;
if (flips > 1)
break;
last = bit;
bit = getbit(samples,i);
if (last == bit) {
len++;
continue;
}
if (len < low) {
len++;
flips++;
continue;
}
value <<= 1;
value |= bit;
flips = 0;
len = 1;
}
return value;
}
EXPORT_SYMBOL_GPL(ir_input_init);
EXPORT_SYMBOL_GPL(ir_input_nokey);
EXPORT_SYMBOL_GPL(ir_input_keydown);
EXPORT_SYMBOL_GPL(ir_extract_bits);
EXPORT_SYMBOL_GPL(ir_dump_samples);
EXPORT_SYMBOL_GPL(ir_decode_biphase);
EXPORT_SYMBOL_GPL(ir_decode_pulsedistance);
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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