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Commit a79bc3c5 authored by Sean Young's avatar Sean Young Committed by Mauro Carvalho Chehab
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[media] lirc: remove lirc_ttusbir driver 

This has been replaced by the ttusbir driver.
Signed-off-by: default avatarSean Young <sean@mess.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent d07df223
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drivers/staging/media/lirc/Kconfig
View file @ a79bc3c5
......@@ -63,12 +63,6 @@ config LIRC_SIR
help
Driver for the SIR IrDA port
config LIRC_TTUSBIR
tristate "Technotrend USB IR Receiver"
depends on LIRC && USB
help
Driver for the Technotrend USB IR Receiver
config LIRC_ZILOG
tristate "Zilog/Hauppauge IR Transmitter"
depends on LIRC && I2C
......
drivers/staging/media/lirc/Makefile
View file @ a79bc3c5
......@@ -10,5 +10,4 @@ obj-$(CONFIG_LIRC_PARALLEL) += lirc_parallel.o
obj-$(CONFIG_LIRC_SASEM) += lirc_sasem.o
obj-$(CONFIG_LIRC_SERIAL) += lirc_serial.o
obj-$(CONFIG_LIRC_SIR) += lirc_sir.o
obj-$(CONFIG_LIRC_TTUSBIR) += lirc_ttusbir.o
obj-$(CONFIG_LIRC_ZILOG) += lirc_zilog.o
drivers/staging/media/lirc/lirc_ttusbir.c deleted 100644 → 0
View file @ d07df223
/*
* lirc_ttusbir.c
*
* lirc_ttusbir - LIRC device driver for the TechnoTrend USB IR Receiver
*
* Copyright (C) 2007 Stefan Macher <st_maker-lirc@yahoo.de>
*
* This LIRC driver provides access to the TechnoTrend USB IR Receiver.
* The receiver delivers the IR signal as raw sampled true/false data in
* isochronous USB packets each of size 128 byte.
* Currently the driver reduces the sampling rate by factor of 8 as this
* is still more than enough to decode RC-5 - others should be analyzed.
* But the driver does not rely on RC-5 it should be able to decode every
* IR signal that is not too fast.
*/
/*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <media/lirc.h>
#include <media/lirc_dev.h>
MODULE_DESCRIPTION("TechnoTrend USB IR device driver for LIRC");
MODULE_AUTHOR("Stefan Macher (st_maker-lirc@yahoo.de)");
MODULE_LICENSE("GPL");
/* #define DEBUG */
#ifdef DEBUG
#define DPRINTK printk
#else
#define DPRINTK(_x_, a...)
#endif
/* function declarations */
static int probe(struct usb_interface *intf, const struct usb_device_id *id);
static void disconnect(struct usb_interface *intf);
static void urb_complete(struct urb *urb);
static int set_use_inc(void *data);
static void set_use_dec(void *data);
static int num_urbs = 2;
module_param(num_urbs, int, S_IRUGO);
MODULE_PARM_DESC(num_urbs,
"Number of URBs in queue. Try to increase to 4 in case "
"of problems (default: 2; minimum: 2)");
/* table of devices that work with this driver */
static struct usb_device_id device_id_table[] = {
/* TechnoTrend USB IR Receiver */
{ USB_DEVICE(0x0B48, 0x2003) },
/* Terminating entry */
{ }
};
MODULE_DEVICE_TABLE(usb, device_id_table);
/* USB driver definition */
static struct usb_driver usb_driver = {
.name = "TTUSBIR",
.id_table = &(device_id_table[0]),
.probe = probe,
.disconnect = disconnect,
};
/* USB device definition */
struct ttusbir_device {
struct usb_driver *usb_driver;
struct usb_device *udev;
struct usb_interface *interf;
struct usb_class_driver class_driver;
unsigned int ifnum; /* Interface number to use */
unsigned int alt_setting; /* alternate setting to use */
unsigned int endpoint; /* Endpoint to use */
struct urb **urb; /* num_urb URB pointers*/
char **buffer; /* 128 byte buffer for each URB */
struct lirc_buffer rbuf; /* Buffer towards LIRC */
struct lirc_driver driver;
int minor;
int last_pulse; /* remembers if last received byte was pulse or space */
int last_num; /* remembers how many last bytes appeared */
int opened;
};
/*** LIRC specific functions ***/
static int set_use_inc(void *data)
{
int i, retval;
struct ttusbir_device *ttusbir = data;
DPRINTK("Sending first URBs\n");
/* @TODO Do I need to check if I am already opened */
ttusbir->opened = 1;
for (i = 0; i < num_urbs; i++) {
retval = usb_submit_urb(ttusbir->urb[i], GFP_KERNEL);
if (retval) {
dev_err(&ttusbir->interf->dev,
"%s: usb_submit_urb failed on urb %d\n",
__func__, i);
return retval;
}
}
return 0;
}
static void set_use_dec(void *data)
{
struct ttusbir_device *ttusbir = data;
DPRINTK("Device closed\n");
ttusbir->opened = 0;
}
/*** USB specific functions ***/
/*
* This mapping table is used to do a very simple filtering of the
* input signal.
* For a value with at least 4 bits set it returns 0xFF otherwise
* 0x00. For faster IR signals this can not be used. But for RC-5 we
* still have about 14 samples per pulse/space, i.e. we sample with 14
* times higher frequency than the signal frequency
*/
const unsigned char map_table[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
static void urb_complete(struct urb *urb)
{
struct ttusbir_device *ttusbir;
unsigned char *buf;
int i;
int l;
ttusbir = urb->context;
if (!ttusbir->opened)
return;
buf = (unsigned char *)urb->transfer_buffer;
for (i = 0; i < 128; i++) {
/* Here we do the filtering and some kind of down sampling */
buf[i] = ~map_table[buf[i]];
if (ttusbir->last_pulse == buf[i]) {
if (ttusbir->last_num < PULSE_MASK/63)
ttusbir->last_num++;
/*
* else we are in a idle period and do not need to
* increment any longer
*/
} else {
l = ttusbir->last_num * 62; /* about 62 = us/byte */
if (ttusbir->last_pulse) /* pulse or space? */
l |= PULSE_BIT;
if (!lirc_buffer_full(&ttusbir->rbuf)) {
lirc_buffer_write(&ttusbir->rbuf, (void *)&l);
wake_up_interruptible(&ttusbir->rbuf.wait_poll);
}
ttusbir->last_num = 0;
ttusbir->last_pulse = buf[i];
}
}
usb_submit_urb(urb, GFP_ATOMIC); /* keep data rolling :-) */
}
/*
* Called whenever the USB subsystem thinks we could be the right driver
* to handle this device
*/
static int probe(struct usb_interface *intf, const struct usb_device_id *id)
{
int alt_set, endp;
int found = 0;
int i, j;
int struct_size;
struct usb_host_interface *host_interf;
struct usb_interface_descriptor *interf_desc;
struct usb_host_endpoint *host_endpoint;
struct ttusbir_device *ttusbir;
DPRINTK("Module ttusbir probe\n");
/* To reduce memory fragmentation we use only one allocation */
struct_size = sizeof(struct ttusbir_device) +
(sizeof(struct urb *) * num_urbs) +
(sizeof(char *) * num_urbs) +
(num_urbs * 128);
ttusbir = kzalloc(struct_size, GFP_KERNEL);
if (!ttusbir)
return -ENOMEM;
ttusbir->urb = (struct urb **)((char *)ttusbir +
sizeof(struct ttusbir_device));
ttusbir->buffer = (char **)((char *)ttusbir->urb +
(sizeof(struct urb *) * num_urbs));
for (i = 0; i < num_urbs; i++)
ttusbir->buffer[i] = (char *)ttusbir->buffer +
(sizeof(char *)*num_urbs) + (i * 128);
ttusbir->usb_driver = &usb_driver;
ttusbir->alt_setting = -1;
/* @TODO check if error can be returned */
ttusbir->udev = usb_get_dev(interface_to_usbdev(intf));
ttusbir->interf = intf;
ttusbir->last_pulse = 0x00;
ttusbir->last_num = 0;
/*
* Now look for interface setting we can handle
* We are searching for the alt setting where end point
* 0x82 has max packet size 16
*/
for (alt_set = 0; alt_set < intf->num_altsetting && !found; alt_set++) {
host_interf = &intf->altsetting[alt_set];
interf_desc = &host_interf->desc;
for (endp = 0; endp < interf_desc->bNumEndpoints; endp++) {
host_endpoint = &host_interf->endpoint[endp];
if ((host_endpoint->desc.bEndpointAddress == 0x82) &&
(host_endpoint->desc.wMaxPacketSize == 0x10)) {
ttusbir->alt_setting = alt_set;
ttusbir->endpoint = endp;
found = 1;
break;
}
}
}
if (ttusbir->alt_setting != -1)
DPRINTK("alt setting: %d\n", ttusbir->alt_setting);
else {
dev_err(&intf->dev, "Could not find alternate setting\n");
kfree(ttusbir);
return -EINVAL;
}
/* OK lets setup this interface setting */
usb_set_interface(ttusbir->udev, 0, ttusbir->alt_setting);
/* Store device info in interface structure */
usb_set_intfdata(intf, ttusbir);
/* Register as a LIRC driver */
if (lirc_buffer_init(&ttusbir->rbuf, sizeof(int), 256) < 0) {
dev_err(&intf->dev, "Could not get memory for LIRC data buffer\n");
usb_set_intfdata(intf, NULL);
kfree(ttusbir);
return -ENOMEM;
}
strcpy(ttusbir->driver.name, "TTUSBIR");
ttusbir->driver.minor = -1;
ttusbir->driver.code_length = 1;
ttusbir->driver.sample_rate = 0;
ttusbir->driver.data = ttusbir;
ttusbir->driver.add_to_buf = NULL;
ttusbir->driver.rbuf = &ttusbir->rbuf;
ttusbir->driver.set_use_inc = set_use_inc;
ttusbir->driver.set_use_dec = set_use_dec;
ttusbir->driver.dev = &intf->dev;
ttusbir->driver.owner = THIS_MODULE;
ttusbir->driver.features = LIRC_CAN_REC_MODE2;
ttusbir->minor = lirc_register_driver(&ttusbir->driver);
if (ttusbir->minor < 0) {
dev_err(&intf->dev, "Error registering as LIRC driver\n");
usb_set_intfdata(intf, NULL);
lirc_buffer_free(&ttusbir->rbuf);
kfree(ttusbir);
return -EIO;
}
/* Allocate and setup the URB that we will use to talk to the device */
for (i = 0; i < num_urbs; i++) {
ttusbir->urb[i] = usb_alloc_urb(8, GFP_KERNEL);
if (!ttusbir->urb[i]) {
dev_err(&intf->dev, "Could not allocate memory for the URB\n");
for (j = i - 1; j >= 0; j--)
kfree(ttusbir->urb[j]);
lirc_buffer_free(&ttusbir->rbuf);
lirc_unregister_driver(ttusbir->minor);
kfree(ttusbir);
usb_set_intfdata(intf, NULL);
return -ENOMEM;
}
ttusbir->urb[i]->dev = ttusbir->udev;
ttusbir->urb[i]->context = ttusbir;
ttusbir->urb[i]->pipe = usb_rcvisocpipe(ttusbir->udev,
ttusbir->endpoint);
ttusbir->urb[i]->interval = 1;
ttusbir->urb[i]->transfer_flags = URB_ISO_ASAP;
ttusbir->urb[i]->transfer_buffer = &ttusbir->buffer[i][0];
ttusbir->urb[i]->complete = urb_complete;
ttusbir->urb[i]->number_of_packets = 8;
ttusbir->urb[i]->transfer_buffer_length = 128;
for (j = 0; j < 8; j++) {
ttusbir->urb[i]->iso_frame_desc[j].offset = j*16;
ttusbir->urb[i]->iso_frame_desc[j].length = 16;
}
}
return 0;
}
/**
* Called when the driver is unloaded or the device is unplugged
*/
static void disconnect(struct usb_interface *intf)
{
int i;
struct ttusbir_device *ttusbir;
DPRINTK("Module ttusbir disconnect\n");
ttusbir = (struct ttusbir_device *) usb_get_intfdata(intf);
usb_set_intfdata(intf, NULL);
lirc_unregister_driver(ttusbir->minor);
DPRINTK("unregistered\n");
for (i = 0; i < num_urbs; i++) {
usb_kill_urb(ttusbir->urb[i]);
usb_free_urb(ttusbir->urb[i]);
}
DPRINTK("URBs killed\n");
lirc_buffer_free(&ttusbir->rbuf);
kfree(ttusbir);
}
module_usb_driver(usb_driver);
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