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[media] rc: port IgorPlug-USB to rc-core

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This is a complete re-write inspired by the original lirc driver.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Sean Young 2014-10-23 17:58:22 -03:00 committed by Mauro Carvalho Chehab
parent 4954578efb
commit b1c97193c6
4 changed files with 283 additions and 0 deletions
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6
MAINTAINERS
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@ -4695,6 +4695,12 @@ F: net/mac802154/
F: drivers/net/ieee802154/
F: Documentation/networking/ieee802154.txt
IGORPLUG-USB IR RECEIVER
M: Sean Young <sean@mess.org>
L: linux-media@vger.kernel.org
S: Maintained
F: drivers/media/rc/igorplugusb.c
IGUANAWORKS USB IR TRANSCEIVER
M: Sean Young <sean@mess.org>
L: linux-media@vger.kernel.org

15
drivers/media/rc/Kconfig
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@ -277,6 +277,21 @@ config IR_WINBOND_CIR
To compile this driver as a module, choose M here: the module will
be called winbond_cir.
config IR_IGORPLUGUSB
tristate "IgorPlug-USB IR Receiver"
depends on USB_ARCH_HAS_HCD
depends on RC_CORE
select USB
---help---
Say Y here if you want to use the IgorPlug-USB IR Receiver by
Igor Cesko. This device is included on the Fit-PC2.
Note that this device can only record bursts of 36 IR pulses and
spaces, which is not enough for the NEC, Sanyo and RC-6 protocol.
To compile this driver as a module, choose M here: the module will
be called igorplugusb.
config IR_IGUANA
tristate "IguanaWorks USB IR Transceiver"
depends on USB_ARCH_HAS_HCD

1
drivers/media/rc/Makefile
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@ -30,6 +30,7 @@ obj-$(CONFIG_IR_STREAMZAP) += streamzap.o
obj-$(CONFIG_IR_WINBOND_CIR) += winbond-cir.o
obj-$(CONFIG_RC_LOOPBACK) += rc-loopback.o
obj-$(CONFIG_IR_GPIO_CIR) += gpio-ir-recv.o
obj-$(CONFIG_IR_IGORPLUGUSB) += igorplugusb.o
obj-$(CONFIG_IR_IGUANA) += iguanair.o
obj-$(CONFIG_IR_TTUSBIR) += ttusbir.o
obj-$(CONFIG_RC_ST) += st_rc.o

261
drivers/media/rc/igorplugusb.c Normal file
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@ -0,0 +1,261 @@
/*
* IgorPlug-USB IR Receiver
*
* Copyright (C) 2014 Sean Young <sean@mess.org>
*
* Supports the standard homebrew IgorPlugUSB receiver with Igor's firmware.
* See http://www.cesko.host.sk/IgorPlugUSB/IgorPlug-USB%20(AVR)_eng.htm
*
* Based on the lirc_igorplugusb.c driver:
* Copyright (C) 2004 Jan M. Hochstein
* <hochstein@algo.informatik.tu-darmstadt.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.
*/
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/usb/input.h>
#include <media/rc-core.h>
#define DRIVER_DESC "IgorPlug-USB IR Receiver"
#define DRIVER_NAME "igorplugusb"
#define HEADERLEN 3
#define BUFLEN 36
#define MAX_PACKET (HEADERLEN + BUFLEN)
#define SET_INFRABUFFER_EMPTY 1
#define GET_INFRACODE 2
struct igorplugusb {
struct rc_dev *rc;
struct device *dev;
struct urb *urb;
struct usb_ctrlrequest request;
struct timer_list timer;
uint8_t buf_in[MAX_PACKET];
char phys[64];
};
static void igorplugusb_cmd(struct igorplugusb *ir, int cmd);
static void igorplugusb_irdata(struct igorplugusb *ir, unsigned len)
{
DEFINE_IR_RAW_EVENT(rawir);
unsigned i, start, overflow;
dev_dbg(ir->dev, "irdata: %*ph (len=%u)", len, ir->buf_in, len);
/*
* If more than 36 pulses and spaces follow each other, the igorplugusb
* overwrites its buffer from the beginning. The overflow value is the
* last offset which was not overwritten. Everything from this offset
* onwards occurred before everything until this offset.
*/
overflow = ir->buf_in[2];
i = start = overflow + HEADERLEN;
if (start >= len) {
dev_err(ir->dev, "receive overflow invalid: %u", overflow);
} else {
if (overflow > 0)
dev_warn(ir->dev, "receive overflow, at least %u lost",
overflow);
do {
rawir.duration = ir->buf_in[i] * 85333;
rawir.pulse = i & 1;
ir_raw_event_store_with_filter(ir->rc, &rawir);
if (++i == len)
i = HEADERLEN;
} while (i != start);
/* add a trailing space */
rawir.duration = ir->rc->timeout;
rawir.pulse = false;
ir_raw_event_store_with_filter(ir->rc, &rawir);
ir_raw_event_handle(ir->rc);
}
igorplugusb_cmd(ir, SET_INFRABUFFER_EMPTY);
}
static void igorplugusb_callback(struct urb *urb)
{
struct usb_ctrlrequest *req;
struct igorplugusb *ir = urb->context;
req = (struct usb_ctrlrequest *)urb->setup_packet;
switch (urb->status) {
case 0:
if (req->bRequest == GET_INFRACODE &&
urb->actual_length > HEADERLEN)
igorplugusb_irdata(ir, urb->actual_length);
else /* request IR */
mod_timer(&ir->timer, jiffies + msecs_to_jiffies(50));
break;
case -EPROTO:
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
usb_unlink_urb(urb);
return;
default:
dev_warn(ir->dev, "Error: urb status = %d\n", urb->status);
igorplugusb_cmd(ir, SET_INFRABUFFER_EMPTY);
break;
}
}
static void igorplugusb_cmd(struct igorplugusb *ir, int cmd)
{
int ret;
ir->request.bRequest = cmd;
ir->urb->transfer_flags = 0;
ret = usb_submit_urb(ir->urb, GFP_ATOMIC);
if (ret)
dev_err(ir->dev, "submit urb failed: %d", ret);
}
static void igorplugusb_timer(unsigned long data)
{
struct igorplugusb *ir = (struct igorplugusb *)data;
igorplugusb_cmd(ir, GET_INFRACODE);
}
static int igorplugusb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *udev;
struct usb_host_interface *idesc;
struct usb_endpoint_descriptor *ep;
struct igorplugusb *ir;
struct rc_dev *rc;
int ret;
udev = interface_to_usbdev(intf);
idesc = intf->cur_altsetting;
if (idesc->desc.bNumEndpoints != 1) {
dev_err(&intf->dev, "incorrect number of endpoints");
return -ENODEV;
}
ep = &idesc->endpoint[0].desc;
if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_control(ep)) {
dev_err(&intf->dev, "endpoint incorrect");
return -ENODEV;
}
ir = devm_kzalloc(&intf->dev, sizeof(*ir), GFP_KERNEL);
if (!ir)
return -ENOMEM;
ir->dev = &intf->dev;
setup_timer(&ir->timer, igorplugusb_timer, (unsigned long)ir);
ir->request.bRequest = GET_INFRACODE;
ir->request.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
ir->request.wLength = cpu_to_le16(sizeof(ir->buf_in));
ir->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!ir->urb)
return -ENOMEM;
usb_fill_control_urb(ir->urb, udev,
usb_rcvctrlpipe(udev, 0), (uint8_t *)&ir->request,
ir->buf_in, sizeof(ir->buf_in), igorplugusb_callback, ir);
usb_make_path(udev, ir->phys, sizeof(ir->phys));
rc = rc_allocate_device();
rc->input_name = DRIVER_DESC;
rc->input_phys = ir->phys;
usb_to_input_id(udev, &rc->input_id);
rc->dev.parent = &intf->dev;
rc->driver_type = RC_DRIVER_IR_RAW;
/*
* This device can only store 36 pulses + spaces, which is not enough
* for the NEC protocol and many others.
*/
rc->allowed_protocols = RC_BIT_ALL & ~(RC_BIT_NEC | RC_BIT_RC6_6A_20 |
RC_BIT_RC6_6A_24 | RC_BIT_RC6_6A_32 | RC_BIT_RC6_MCE |
RC_BIT_SONY20 | RC_BIT_MCE_KBD | RC_BIT_SANYO);
rc->priv = ir;
rc->driver_name = DRIVER_NAME;
rc->map_name = RC_MAP_HAUPPAUGE;
rc->timeout = MS_TO_NS(100);
rc->rx_resolution = 85333;
ir->rc = rc;
ret = rc_register_device(rc);
if (ret) {
dev_err(&intf->dev, "failed to register rc device: %d", ret);
rc_free_device(rc);
usb_free_urb(ir->urb);
return ret;
}
usb_set_intfdata(intf, ir);
igorplugusb_cmd(ir, SET_INFRABUFFER_EMPTY);
return 0;
}
static void igorplugusb_disconnect(struct usb_interface *intf)
{
struct igorplugusb *ir = usb_get_intfdata(intf);
rc_unregister_device(ir->rc);
del_timer_sync(&ir->timer);
usb_set_intfdata(intf, NULL);
usb_kill_urb(ir->urb);
usb_free_urb(ir->urb);
}
static struct usb_device_id igorplugusb_table[] = {
/* Igor Plug USB (Atmel's Manufact. ID) */
{ USB_DEVICE(0x03eb, 0x0002) },
/* Fit PC2 Infrared Adapter */
{ USB_DEVICE(0x03eb, 0x21fe) },
/* Terminating entry */
{ }
};
static struct usb_driver igorplugusb_driver = {
.name = DRIVER_NAME,
.probe = igorplugusb_probe,
.disconnect = igorplugusb_disconnect,
.id_table = igorplugusb_table
};
module_usb_driver(igorplugusb_driver);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR("Sean Young <sean@mess.org>");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(usb, igorplugusb_table);