+++ /dev/null
-/*
- * lirc_igorplugusb - USB remote support for LIRC
- *
- * Supports the standard homebrew IgorPlugUSB receiver with Igor's firmware.
- * See http://www.cesko.host.sk/IgorPlugUSB/IgorPlug-USB%20(AVR)_eng.htm
- *
- * The device can only record bursts of up to 36 pulses/spaces.
- * Works fine with RC5. Longer commands lead to device buffer overrun.
- * (Maybe a better firmware or a microcontroller with more ram can help?)
- *
- * Version 0.1 [beta status]
- *
- * Copyright (C) 2004 Jan M. Hochstein
- * <hochstein@algo.informatik.tu-darmstadt.de>
- *
- * This driver was derived from:
- * Paul Miller <pmiller9@users.sourceforge.net>
- * "lirc_atiusb" module
- * Vladimir Dergachev <volodya@minspring.com>'s 2002
- * "USB ATI Remote support" (input device)
- * Adrian Dewhurst <sailor-lk@sailorfrag.net>'s 2002
- * "USB StreamZap remote driver" (LIRC)
- * Artur Lipowski <alipowski@kki.net.pl>'s 2002
- * "lirc_dev" and "lirc_gpio" LIRC modules
- */
-
-/*
- * 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/kernel.h>
-#include <linux/kmod.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/usb.h>
-#include <linux/time.h>
-
-#include <media/lirc.h>
-#include <media/lirc_dev.h>
-
-
-/* module identification */
-#define DRIVER_VERSION "0.2"
-#define DRIVER_AUTHOR \
- "Jan M. Hochstein <hochstein@algo.informatik.tu-darmstadt.de>"
-#define DRIVER_DESC "Igorplug USB remote driver for LIRC"
-#define DRIVER_NAME "lirc_igorplugusb"
-
-/* One mode2 pulse/space has 4 bytes. */
-#define CODE_LENGTH sizeof(int)
-
-/* Igor's firmware cannot record bursts longer than 36. */
-#define DEVICE_BUFLEN 36
-
-/*
- * Header at the beginning of the device's buffer:
- * unsigned char data_length
- * unsigned char data_start (!=0 means ring-buffer overrun)
- * unsigned char counter (incremented by each burst)
- */
-#define DEVICE_HEADERLEN 3
-
-/* This is for the gap */
-#define ADDITIONAL_LIRC_BYTES 2
-
-/* times to poll per second */
-#define SAMPLE_RATE 100
-static int sample_rate = SAMPLE_RATE;
-
-
-/**** Igor's USB Request Codes */
-
-#define SET_INFRABUFFER_EMPTY 1
-/**
- * Params: none
- * Answer: empty
- */
-
-#define GET_INFRACODE 2
-/**
- * Params:
- * wValue: offset to begin reading infra buffer
- *
- * Answer: infra data
- */
-
-#define SET_DATAPORT_DIRECTION 3
-/**
- * Params:
- * wValue: (byte) 1 bit for each data port pin (0=in, 1=out)
- *
- * Answer: empty
- */
-
-#define GET_DATAPORT_DIRECTION 4
-/**
- * Params: none
- *
- * Answer: (byte) 1 bit for each data port pin (0=in, 1=out)
- */
-
-#define SET_OUT_DATAPORT 5
-/**
- * Params:
- * wValue: byte to write to output data port
- *
- * Answer: empty
- */
-
-#define GET_OUT_DATAPORT 6
-/**
- * Params: none
- *
- * Answer: least significant 3 bits read from output data port
- */
-
-#define GET_IN_DATAPORT 7
-/**
- * Params: none
- *
- * Answer: least significant 3 bits read from input data port
- */
-
-#define READ_EEPROM 8
-/**
- * Params:
- * wValue: offset to begin reading EEPROM
- *
- * Answer: EEPROM bytes
- */
-
-#define WRITE_EEPROM 9
-/**
- * Params:
- * wValue: offset to EEPROM byte
- * wIndex: byte to write
- *
- * Answer: empty
- */
-
-#define SEND_RS232 10
-/**
- * Params:
- * wValue: byte to send
- *
- * Answer: empty
- */
-
-#define RECV_RS232 11
-/**
- * Params: none
- *
- * Answer: byte received
- */
-
-#define SET_RS232_BAUD 12
-/**
- * Params:
- * wValue: byte to write to UART bit rate register (UBRR)
- *
- * Answer: empty
- */
-
-#define GET_RS232_BAUD 13
-/**
- * Params: none
- *
- * Answer: byte read from UART bit rate register (UBRR)
- */
-
-
-/* data structure for each usb remote */
-struct igorplug {
-
- /* usb */
- struct usb_device *usbdev;
- int devnum;
-
- unsigned char *buf_in;
- unsigned int len_in;
- int in_space;
- struct timeval last_time;
-
- dma_addr_t dma_in;
-
- /* lirc */
- struct lirc_driver *d;
-
- /* handle sending (init strings) */
- int send_flags;
-};
-
-static int unregister_from_lirc(struct igorplug *ir)
-{
- struct lirc_driver *d;
- int devnum;
-
- devnum = ir->devnum;
- d = ir->d;
-
- if (!d) {
- dev_err(&ir->usbdev->dev,
- "%s: called with NULL lirc driver struct!\n", __func__);
- return -EINVAL;
- }
-
- dev_dbg(&ir->usbdev->dev, "calling lirc_unregister_driver\n");
- lirc_unregister_driver(d->minor);
-
- return devnum;
-}
-
-static int set_use_inc(void *data)
-{
- struct igorplug *ir = data;
-
- if (!ir) {
- printk(DRIVER_NAME "[?]: set_use_inc called with no context\n");
- return -EIO;
- }
-
- dev_dbg(&ir->usbdev->dev, "set use inc\n");
-
- if (!ir->usbdev)
- return -ENODEV;
-
- return 0;
-}
-
-static void set_use_dec(void *data)
-{
- struct igorplug *ir = data;
-
- if (!ir) {
- printk(DRIVER_NAME "[?]: set_use_dec called with no context\n");
- return;
- }
-
- dev_dbg(&ir->usbdev->dev, "set use dec\n");
-}
-
-static void send_fragment(struct igorplug *ir, struct lirc_buffer *buf,
- int i, int max)
-{
- int code;
-
- /* MODE2: pulse/space (PULSE_BIT) in 1us units */
- while (i < max) {
- /* 1 Igor-tick = 85.333333 us */
- code = (unsigned int)ir->buf_in[i] * 85 +
- (unsigned int)ir->buf_in[i] / 3;
- ir->last_time.tv_usec += code;
- if (ir->in_space)
- code |= PULSE_BIT;
- lirc_buffer_write(buf, (unsigned char *)&code);
- /* 1 chunk = CODE_LENGTH bytes */
- ir->in_space ^= 1;
- ++i;
- }
-}
-
-/**
- * Called in user context.
- * return 0 if data was added to the buffer and
- * -ENODATA if none was available. This should add some number of bits
- * evenly divisible by code_length to the buffer
- */
-static int igorplugusb_remote_poll(void *data, struct lirc_buffer *buf)
-{
- int ret;
- struct igorplug *ir = (struct igorplug *)data;
-
- if (!ir || !ir->usbdev) /* Has the device been removed? */
- return -ENODEV;
-
- memset(ir->buf_in, 0, ir->len_in);
-
- ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
- GET_INFRACODE, USB_TYPE_VENDOR | USB_DIR_IN,
- 0/* offset */, /*unused*/0,
- ir->buf_in, ir->len_in,
- /*timeout*/HZ * USB_CTRL_GET_TIMEOUT);
- if (ret > 0) {
- int code, timediff;
- struct timeval now;
-
- /* ACK packet has 1 byte --> ignore */
- if (ret < DEVICE_HEADERLEN)
- return -ENODATA;
-
- dev_dbg(&ir->usbdev->dev, "Got %d bytes. Header: %*ph\n",
- ret, 3, ir->buf_in);
-
- do_gettimeofday(&now);
- timediff = now.tv_sec - ir->last_time.tv_sec;
- if (timediff + 1 > PULSE_MASK / 1000000)
- timediff = PULSE_MASK;
- else {
- timediff *= 1000000;
- timediff += now.tv_usec - ir->last_time.tv_usec;
- }
- ir->last_time.tv_sec = now.tv_sec;
- ir->last_time.tv_usec = now.tv_usec;
-
- /* create leading gap */
- code = timediff;
- lirc_buffer_write(buf, (unsigned char *)&code);
- ir->in_space = 1; /* next comes a pulse */
-
- if (ir->buf_in[2] == 0)
- send_fragment(ir, buf, DEVICE_HEADERLEN, ret);
- else {
- dev_warn(&ir->usbdev->dev,
- "[%d]: Device buffer overrun.\n", ir->devnum);
- /* HHHNNNNNNNNNNNOOOOOOOO H = header
- <---[2]---> N = newer
- <---------ret--------> O = older */
- ir->buf_in[2] %= ret - DEVICE_HEADERLEN; /* sanitize */
- /* keep even-ness to not desync pulse/pause */
- send_fragment(ir, buf, DEVICE_HEADERLEN +
- ir->buf_in[2] - (ir->buf_in[2] & 1), ret);
- send_fragment(ir, buf, DEVICE_HEADERLEN,
- DEVICE_HEADERLEN + ir->buf_in[2]);
- }
-
- ret = usb_control_msg(
- ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
- SET_INFRABUFFER_EMPTY, USB_TYPE_VENDOR|USB_DIR_IN,
- /*unused*/0, /*unused*/0,
- /*dummy*/ir->buf_in, /*dummy*/ir->len_in,
- /*timeout*/HZ * USB_CTRL_GET_TIMEOUT);
- if (ret < 0)
- printk(DRIVER_NAME "[%d]: SET_INFRABUFFER_EMPTY: error %d\n",
- ir->devnum, ret);
- return 0;
- } else if (ret < 0)
- printk(DRIVER_NAME "[%d]: GET_INFRACODE: error %d\n",
- ir->devnum, ret);
-
- return -ENODATA;
-}
-
-static int igorplugusb_remote_probe(struct usb_interface *intf,
- const struct usb_device_id *id)
-{
- struct usb_device *dev;
- struct usb_host_interface *idesc = NULL;
- struct usb_endpoint_descriptor *ep;
- struct igorplug *ir = NULL;
- struct lirc_driver *driver = NULL;
- int devnum, pipe, maxp;
- char buf[63], name[128] = "";
- int ret;
-
- dev_dbg(&intf->dev, "%s: usb probe called.\n", __func__);
-
- dev = interface_to_usbdev(intf);
-
- idesc = intf->cur_altsetting;
-
- if (idesc->desc.bNumEndpoints != 1)
- return -ENODEV;
-
- ep = &idesc->endpoint->desc;
- if (((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
- != USB_DIR_IN)
- || (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
- != USB_ENDPOINT_XFER_CONTROL)
- return -ENODEV;
-
- pipe = usb_rcvctrlpipe(dev, ep->bEndpointAddress);
- devnum = dev->devnum;
- maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
-
- dev_dbg(&intf->dev, "%s: bytes_in_key=%zu maxp=%d\n",
- __func__, CODE_LENGTH, maxp);
-
- ir = devm_kzalloc(&intf->dev, sizeof(*ir), GFP_KERNEL);
- if (!ir)
- return -ENOMEM;
-
- driver = devm_kzalloc(&intf->dev, sizeof(*driver), GFP_KERNEL);
- if (!driver)
- return -ENOMEM;
-
- ir->buf_in = usb_alloc_coherent(dev, DEVICE_BUFLEN + DEVICE_HEADERLEN,
- GFP_ATOMIC, &ir->dma_in);
- if (!ir->buf_in)
- return -ENOMEM;
-
- strcpy(driver->name, DRIVER_NAME " ");
- driver->minor = -1;
- driver->code_length = CODE_LENGTH * 8; /* in bits */
- driver->features = LIRC_CAN_REC_MODE2;
- driver->data = ir;
- driver->chunk_size = CODE_LENGTH;
- driver->buffer_size = DEVICE_BUFLEN + ADDITIONAL_LIRC_BYTES;
- driver->set_use_inc = &set_use_inc;
- driver->set_use_dec = &set_use_dec;
- driver->sample_rate = sample_rate; /* per second */
- driver->add_to_buf = &igorplugusb_remote_poll;
- driver->dev = &intf->dev;
- driver->owner = THIS_MODULE;
-
- ret = lirc_register_driver(driver);
- if (ret < 0) {
- usb_free_coherent(dev, DEVICE_BUFLEN + DEVICE_HEADERLEN,
- ir->buf_in, ir->dma_in);
- return ret;
- }
-
- driver->minor = ret;
- ir->d = driver;
- ir->devnum = devnum;
- ir->usbdev = dev;
- ir->len_in = DEVICE_BUFLEN + DEVICE_HEADERLEN;
- ir->in_space = 1; /* First mode2 event is a space. */
- do_gettimeofday(&ir->last_time);
-
- if (dev->descriptor.iManufacturer
- && usb_string(dev, dev->descriptor.iManufacturer,
- buf, sizeof(buf)) > 0)
- strlcpy(name, buf, sizeof(name));
- if (dev->descriptor.iProduct
- && usb_string(dev, dev->descriptor.iProduct, buf, sizeof(buf)) > 0)
- snprintf(name + strlen(name), sizeof(name) - strlen(name),
- " %s", buf);
- printk(DRIVER_NAME "[%d]: %s on usb%d:%d\n", devnum, name,
- dev->bus->busnum, devnum);
-
- /* clear device buffer */
- ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
- SET_INFRABUFFER_EMPTY, USB_TYPE_VENDOR|USB_DIR_IN,
- /*unused*/0, /*unused*/0,
- /*dummy*/ir->buf_in, /*dummy*/ir->len_in,
- /*timeout*/HZ * USB_CTRL_GET_TIMEOUT);
- if (ret < 0)
- printk(DRIVER_NAME "[%d]: SET_INFRABUFFER_EMPTY: error %d\n",
- devnum, ret);
-
- usb_set_intfdata(intf, ir);
- return 0;
-}
-
-static void igorplugusb_remote_disconnect(struct usb_interface *intf)
-{
- struct usb_device *usbdev = interface_to_usbdev(intf);
- struct igorplug *ir = usb_get_intfdata(intf);
- struct device *dev = &intf->dev;
- int devnum;
-
- usb_set_intfdata(intf, NULL);
-
- if (!ir || !ir->d)
- return;
-
- ir->usbdev = NULL;
-
- usb_free_coherent(usbdev, ir->len_in, ir->buf_in, ir->dma_in);
-
- devnum = unregister_from_lirc(ir);
-
- dev_info(dev, DRIVER_NAME "[%d]: %s done\n", devnum, __func__);
-}
-
-static struct usb_device_id igorplugusb_remote_id_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_remote_driver = {
- .name = DRIVER_NAME,
- .probe = igorplugusb_remote_probe,
- .disconnect = igorplugusb_remote_disconnect,
- .id_table = igorplugusb_remote_id_table
-};
-
-module_usb_driver(igorplugusb_remote_driver);
-
-#include <linux/vermagic.h>
-MODULE_INFO(vermagic, VERMAGIC_STRING);
-
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_LICENSE("GPL");
-MODULE_DEVICE_TABLE(usb, igorplugusb_remote_id_table);
-
-module_param(sample_rate, int, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(sample_rate, "Sampling rate in Hz (default: 100)");
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff