mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 18:14:07 +08:00
fae91e72b7
I2C_DEVNAME and i2c_clientname were introduced in 2.5.68 [1] to help media/video driver authors who wanted their code to be compatible with both Linux 2.4 and 2.6. The cause of the incompatibility has gone since [2], so I think we can get rid of them, as they tend to make the code harder to read and longer to preprocess/compile for no more benefit. I'd hope nobody seriously attempts to keep media/video driver compatible across Linux trees anymore, BTW. [1] http://marc.theaimsgroup.com/?l=linux-kernel&m=104930186524598&w=2 [2] http://www.linuxhq.com/kernel/v2.6/0-test3/include/linux/i2c.h Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
484 lines
11 KiB
C
484 lines
11 KiB
C
/*
|
|
* $Id: ir-kbd-i2c.c,v 1.11 2005/07/07 16:42:11 mchehab Exp $
|
|
*
|
|
* keyboard input driver for i2c IR remote controls
|
|
*
|
|
* Copyright (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org>
|
|
* modified for PixelView (BT878P+W/FM) by
|
|
* Michal Kochanowicz <mkochano@pld.org.pl>
|
|
* Christoph Bartelmus <lirc@bartelmus.de>
|
|
* modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by
|
|
* Ulrich Mueller <ulrich.mueller42@web.de>
|
|
*
|
|
* 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/kernel.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/string.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/workqueue.h>
|
|
|
|
#include <asm/semaphore.h>
|
|
|
|
#include <media/ir-common.h>
|
|
|
|
/* Mark Phalan <phalanm@o2.ie> */
|
|
static IR_KEYTAB_TYPE ir_codes_pv951[IR_KEYTAB_SIZE] = {
|
|
[ 0 ] = KEY_KP0,
|
|
[ 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,
|
|
|
|
[ 18 ] = KEY_POWER,
|
|
[ 16 ] = KEY_MUTE,
|
|
[ 31 ] = KEY_VOLUMEDOWN,
|
|
[ 27 ] = KEY_VOLUMEUP,
|
|
[ 26 ] = KEY_CHANNELUP,
|
|
[ 30 ] = KEY_CHANNELDOWN,
|
|
[ 14 ] = KEY_PAGEUP,
|
|
[ 29 ] = KEY_PAGEDOWN,
|
|
[ 19 ] = KEY_SOUND,
|
|
|
|
[ 24 ] = KEY_KPPLUSMINUS, /* CH +/- */
|
|
[ 22 ] = KEY_SUBTITLE, /* CC */
|
|
[ 13 ] = KEY_TEXT, /* TTX */
|
|
[ 11 ] = KEY_TV, /* AIR/CBL */
|
|
[ 17 ] = KEY_PC, /* PC/TV */
|
|
[ 23 ] = KEY_OK, /* CH RTN */
|
|
[ 25 ] = KEY_MODE, /* FUNC */
|
|
[ 12 ] = KEY_SEARCH, /* AUTOSCAN */
|
|
|
|
/* Not sure what to do with these ones! */
|
|
[ 15 ] = KEY_SELECT, /* SOURCE */
|
|
[ 10 ] = KEY_KPPLUS, /* +100 */
|
|
[ 20 ] = KEY_KPEQUAL, /* SYNC */
|
|
[ 28 ] = KEY_MEDIA, /* PC/TV */
|
|
};
|
|
|
|
static IR_KEYTAB_TYPE ir_codes_purpletv[IR_KEYTAB_SIZE] = {
|
|
[ 0x3 ] = KEY_POWER,
|
|
[ 0x6f ] = KEY_MUTE,
|
|
[ 0x10 ] = KEY_BACKSPACE, /* Recall */
|
|
|
|
[ 0x11 ] = KEY_KP0,
|
|
[ 0x4 ] = KEY_KP1,
|
|
[ 0x5 ] = KEY_KP2,
|
|
[ 0x6 ] = KEY_KP3,
|
|
[ 0x8 ] = KEY_KP4,
|
|
[ 0x9 ] = KEY_KP5,
|
|
[ 0xa ] = KEY_KP6,
|
|
[ 0xc ] = KEY_KP7,
|
|
[ 0xd ] = KEY_KP8,
|
|
[ 0xe ] = KEY_KP9,
|
|
[ 0x12 ] = KEY_KPDOT, /* 100+ */
|
|
|
|
[ 0x7 ] = KEY_VOLUMEUP,
|
|
[ 0xb ] = KEY_VOLUMEDOWN,
|
|
[ 0x1a ] = KEY_KPPLUS,
|
|
[ 0x18 ] = KEY_KPMINUS,
|
|
[ 0x15 ] = KEY_UP,
|
|
[ 0x1d ] = KEY_DOWN,
|
|
[ 0xf ] = KEY_CHANNELUP,
|
|
[ 0x13 ] = KEY_CHANNELDOWN,
|
|
[ 0x48 ] = KEY_ZOOM,
|
|
|
|
[ 0x1b ] = KEY_VIDEO, /* Video source */
|
|
[ 0x49 ] = KEY_LANGUAGE, /* MTS Select */
|
|
[ 0x19 ] = KEY_SEARCH, /* Auto Scan */
|
|
|
|
[ 0x4b ] = KEY_RECORD,
|
|
[ 0x46 ] = KEY_PLAY,
|
|
[ 0x45 ] = KEY_PAUSE, /* Pause */
|
|
[ 0x44 ] = KEY_STOP,
|
|
[ 0x40 ] = KEY_FORWARD, /* Forward ? */
|
|
[ 0x42 ] = KEY_REWIND, /* Backward ? */
|
|
|
|
};
|
|
|
|
struct IR;
|
|
struct IR {
|
|
struct i2c_client c;
|
|
struct input_dev input;
|
|
struct ir_input_state ir;
|
|
|
|
struct work_struct work;
|
|
struct timer_list timer;
|
|
char phys[32];
|
|
int (*get_key)(struct IR*, u32*, u32*);
|
|
};
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
/* insmod parameters */
|
|
|
|
static int debug;
|
|
module_param(debug, int, 0644); /* debug level (0,1,2) */
|
|
|
|
#define DEVNAME "ir-kbd-i2c"
|
|
#define dprintk(level, fmt, arg...) if (debug >= level) \
|
|
printk(KERN_DEBUG DEVNAME ": " fmt , ## arg)
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static int get_key_haup(struct IR *ir, u32 *ir_key, u32 *ir_raw)
|
|
{
|
|
unsigned char buf[3];
|
|
int start, toggle, dev, code;
|
|
|
|
/* poll IR chip */
|
|
if (3 != i2c_master_recv(&ir->c,buf,3))
|
|
return -EIO;
|
|
|
|
/* split rc5 data block ... */
|
|
start = (buf[0] >> 6) & 3;
|
|
toggle = (buf[0] >> 5) & 1;
|
|
dev = buf[0] & 0x1f;
|
|
code = (buf[1] >> 2) & 0x3f;
|
|
|
|
if (3 != start)
|
|
/* no key pressed */
|
|
return 0;
|
|
dprintk(1,"ir hauppauge (rc5): s%d t%d dev=%d code=%d\n",
|
|
start, toggle, dev, code);
|
|
|
|
/* return key */
|
|
*ir_key = code;
|
|
*ir_raw = (start << 12) | (toggle << 11) | (dev << 6) | code;
|
|
return 1;
|
|
}
|
|
|
|
static int get_key_pixelview(struct IR *ir, u32 *ir_key, u32 *ir_raw)
|
|
{
|
|
unsigned char b;
|
|
|
|
/* poll IR chip */
|
|
if (1 != i2c_master_recv(&ir->c,&b,1)) {
|
|
dprintk(1,"read error\n");
|
|
return -EIO;
|
|
}
|
|
*ir_key = b;
|
|
*ir_raw = b;
|
|
return 1;
|
|
}
|
|
|
|
static int get_key_pv951(struct IR *ir, u32 *ir_key, u32 *ir_raw)
|
|
{
|
|
unsigned char b;
|
|
|
|
/* poll IR chip */
|
|
if (1 != i2c_master_recv(&ir->c,&b,1)) {
|
|
dprintk(1,"read error\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/* ignore 0xaa */
|
|
if (b==0xaa)
|
|
return 0;
|
|
dprintk(2,"key %02x\n", b);
|
|
|
|
*ir_key = b;
|
|
*ir_raw = b;
|
|
return 1;
|
|
}
|
|
|
|
static int get_key_knc1(struct IR *ir, u32 *ir_key, u32 *ir_raw)
|
|
{
|
|
unsigned char b;
|
|
|
|
/* poll IR chip */
|
|
if (1 != i2c_master_recv(&ir->c,&b,1)) {
|
|
dprintk(1,"read error\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/* it seems that 0xFE indicates that a button is still hold
|
|
down, while 0xFF indicates that no button is hold
|
|
down. 0xFE sequences are sometimes interrupted by 0xFF */
|
|
|
|
dprintk(2,"key %02x\n", b);
|
|
|
|
if (b == 0xFF)
|
|
return 0;
|
|
|
|
if (b == 0xFE)
|
|
/* keep old data */
|
|
return 1;
|
|
|
|
*ir_key = b;
|
|
*ir_raw = b;
|
|
return 1;
|
|
}
|
|
|
|
static int get_key_purpletv(struct IR *ir, u32 *ir_key, u32 *ir_raw)
|
|
{
|
|
unsigned char b;
|
|
|
|
/* poll IR chip */
|
|
if (1 != i2c_master_recv(&ir->c,&b,1)) {
|
|
dprintk(1,"read error\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/* no button press */
|
|
if (b==0)
|
|
return 0;
|
|
|
|
/* repeating */
|
|
if (b & 0x80)
|
|
return 1;
|
|
|
|
*ir_key = b;
|
|
*ir_raw = b;
|
|
return 1;
|
|
}
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static void ir_key_poll(struct IR *ir)
|
|
{
|
|
static u32 ir_key, ir_raw;
|
|
int rc;
|
|
|
|
dprintk(2,"ir_poll_key\n");
|
|
rc = ir->get_key(ir, &ir_key, &ir_raw);
|
|
if (rc < 0) {
|
|
dprintk(2,"error\n");
|
|
return;
|
|
}
|
|
|
|
if (0 == rc) {
|
|
ir_input_nokey(&ir->input,&ir->ir);
|
|
} else {
|
|
ir_input_keydown(&ir->input,&ir->ir, ir_key, ir_raw);
|
|
}
|
|
}
|
|
|
|
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;
|
|
ir_key_poll(ir);
|
|
mod_timer(&ir->timer, jiffies+HZ/10);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static int ir_attach(struct i2c_adapter *adap, int addr,
|
|
unsigned short flags, int kind);
|
|
static int ir_detach(struct i2c_client *client);
|
|
static int ir_probe(struct i2c_adapter *adap);
|
|
|
|
static struct i2c_driver driver = {
|
|
.name = "ir remote kbd driver",
|
|
.id = I2C_DRIVERID_EXP3, /* FIXME */
|
|
.flags = I2C_DF_NOTIFY,
|
|
.attach_adapter = ir_probe,
|
|
.detach_client = ir_detach,
|
|
};
|
|
|
|
static struct i2c_client client_template =
|
|
{
|
|
.name = "unset",
|
|
.driver = &driver
|
|
};
|
|
|
|
static int ir_attach(struct i2c_adapter *adap, int addr,
|
|
unsigned short flags, int kind)
|
|
{
|
|
IR_KEYTAB_TYPE *ir_codes = NULL;
|
|
char *name;
|
|
int ir_type;
|
|
struct IR *ir;
|
|
|
|
if (NULL == (ir = kmalloc(sizeof(struct IR),GFP_KERNEL)))
|
|
return -ENOMEM;
|
|
memset(ir,0,sizeof(*ir));
|
|
ir->c = client_template;
|
|
|
|
i2c_set_clientdata(&ir->c, ir);
|
|
ir->c.adapter = adap;
|
|
ir->c.addr = addr;
|
|
|
|
switch(addr) {
|
|
case 0x64:
|
|
name = "Pixelview";
|
|
ir->get_key = get_key_pixelview;
|
|
ir_type = IR_TYPE_OTHER;
|
|
ir_codes = ir_codes_empty;
|
|
break;
|
|
case 0x4b:
|
|
name = "PV951";
|
|
ir->get_key = get_key_pv951;
|
|
ir_type = IR_TYPE_OTHER;
|
|
ir_codes = ir_codes_pv951;
|
|
break;
|
|
case 0x18:
|
|
case 0x1a:
|
|
name = "Hauppauge";
|
|
ir->get_key = get_key_haup;
|
|
ir_type = IR_TYPE_RC5;
|
|
ir_codes = ir_codes_rc5_tv;
|
|
break;
|
|
case 0x30:
|
|
name = "KNC One";
|
|
ir->get_key = get_key_knc1;
|
|
ir_type = IR_TYPE_OTHER;
|
|
ir_codes = ir_codes_empty;
|
|
break;
|
|
case 0x7a:
|
|
name = "Purple TV";
|
|
ir->get_key = get_key_purpletv;
|
|
ir_type = IR_TYPE_OTHER;
|
|
ir_codes = ir_codes_purpletv;
|
|
break;
|
|
default:
|
|
/* shouldn't happen */
|
|
printk(DEVNAME ": Huh? unknown i2c address (0x%02x)?\n",addr);
|
|
kfree(ir);
|
|
return -1;
|
|
}
|
|
|
|
/* register i2c device */
|
|
i2c_attach_client(&ir->c);
|
|
snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (%s)", name);
|
|
snprintf(ir->phys, sizeof(ir->phys), "%s/%s/ir0",
|
|
ir->c.adapter->dev.bus_id,
|
|
ir->c.dev.bus_id);
|
|
|
|
/* init + register input device */
|
|
ir_input_init(&ir->input,&ir->ir,ir_type,ir_codes);
|
|
ir->input.id.bustype = BUS_I2C;
|
|
ir->input.name = ir->c.name;
|
|
ir->input.phys = ir->phys;
|
|
input_register_device(&ir->input);
|
|
printk(DEVNAME ": %s detected at %s [%s]\n",
|
|
ir->input.name,ir->input.phys,adap->name);
|
|
|
|
/* start polling via eventd */
|
|
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);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ir_detach(struct i2c_client *client)
|
|
{
|
|
struct IR *ir = i2c_get_clientdata(client);
|
|
|
|
/* kill outstanding polls */
|
|
del_timer(&ir->timer);
|
|
flush_scheduled_work();
|
|
|
|
/* unregister devices */
|
|
input_unregister_device(&ir->input);
|
|
i2c_detach_client(&ir->c);
|
|
|
|
/* free memory */
|
|
kfree(ir);
|
|
return 0;
|
|
}
|
|
|
|
static int ir_probe(struct i2c_adapter *adap)
|
|
{
|
|
|
|
/* The external IR receiver is at i2c address 0x34 (0x35 for
|
|
reads). Future Hauppauge cards will have an internal
|
|
receiver at 0x30 (0x31 for reads). In theory, both can be
|
|
fitted, and Hauppauge suggest an external overrides an
|
|
internal.
|
|
|
|
That's why we probe 0x1a (~0x34) first. CB
|
|
*/
|
|
|
|
static const int probe_bttv[] = { 0x1a, 0x18, 0x4b, 0x64, 0x30, -1};
|
|
static const int probe_saa7134[] = { 0x7a, -1 };
|
|
const int *probe = NULL;
|
|
struct i2c_client c; char buf; int i,rc;
|
|
|
|
switch (adap->id) {
|
|
case I2C_HW_B_BT848:
|
|
probe = probe_bttv;
|
|
break;
|
|
case I2C_HW_SAA7134:
|
|
probe = probe_saa7134;
|
|
break;
|
|
}
|
|
if (NULL == probe)
|
|
return 0;
|
|
|
|
memset(&c,0,sizeof(c));
|
|
c.adapter = adap;
|
|
for (i = 0; -1 != probe[i]; i++) {
|
|
c.addr = probe[i];
|
|
rc = i2c_master_recv(&c,&buf,1);
|
|
dprintk(1,"probe 0x%02x @ %s: %s\n",
|
|
probe[i], adap->name,
|
|
(1 == rc) ? "yes" : "no");
|
|
if (1 == rc) {
|
|
ir_attach(adap,probe[i],0,0);
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller");
|
|
MODULE_DESCRIPTION("input driver for i2c IR remote controls");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int __init ir_init(void)
|
|
{
|
|
return i2c_add_driver(&driver);
|
|
}
|
|
|
|
static void __exit ir_fini(void)
|
|
{
|
|
i2c_del_driver(&driver);
|
|
}
|
|
|
|
module_init(ir_init);
|
|
module_exit(ir_fini);
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|