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path: root/drivers/media/IR/streamzap.c
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Diffstat (limited to 'drivers/media/IR/streamzap.c')
-rw-r--r--drivers/media/IR/streamzap.c569
1 files changed, 0 insertions, 569 deletions
diff --git a/drivers/media/IR/streamzap.c b/drivers/media/IR/streamzap.c
deleted file mode 100644
index 548381c35bfd..000000000000
--- a/drivers/media/IR/streamzap.c
+++ /dev/null
@@ -1,569 +0,0 @@
-/*
- * Streamzap Remote Control driver
- *
- * Copyright (c) 2005 Christoph Bartelmus <lirc@bartelmus.de>
- * Copyright (c) 2010 Jarod Wilson <jarod@wilsonet.com>
- *
- * This driver was based on the work of Greg Wickham and Adrian
- * Dewhurst. It was substantially rewritten to support correct signal
- * gaps and now maintains a delay buffer, which is used to present
- * consistent timing behaviour to user space applications. Without the
- * delay buffer an ugly hack would be required in lircd, which can
- * cause sluggish signal decoding in certain situations.
- *
- * Ported to in-kernel ir-core interface by Jarod Wilson
- *
- * This driver is based on the USB skeleton driver packaged with the
- * kernel; copyright (C) 2001-2003 Greg Kroah-Hartman (greg@kroah.com)
- *
- * 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/device.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/usb.h>
-#include <linux/input.h>
-#include <media/ir-core.h>
-
-#define DRIVER_VERSION "1.61"
-#define DRIVER_NAME "streamzap"
-#define DRIVER_DESC "Streamzap Remote Control driver"
-
-#ifdef CONFIG_USB_DEBUG
-static int debug = 1;
-#else
-static int debug;
-#endif
-
-#define USB_STREAMZAP_VENDOR_ID 0x0e9c
-#define USB_STREAMZAP_PRODUCT_ID 0x0000
-
-/* table of devices that work with this driver */
-static struct usb_device_id streamzap_table[] = {
- /* Streamzap Remote Control */
- { USB_DEVICE(USB_STREAMZAP_VENDOR_ID, USB_STREAMZAP_PRODUCT_ID) },
- /* Terminating entry */
- { }
-};
-
-MODULE_DEVICE_TABLE(usb, streamzap_table);
-
-#define SZ_PULSE_MASK 0xf0
-#define SZ_SPACE_MASK 0x0f
-#define SZ_TIMEOUT 0xff
-#define SZ_RESOLUTION 256
-
-/* number of samples buffered */
-#define SZ_BUF_LEN 128
-
-/* from ir-rc5-sz-decoder.c */
-#ifdef CONFIG_IR_RC5_SZ_DECODER_MODULE
-#define load_rc5_sz_decode() request_module("ir-rc5-sz-decoder")
-#else
-#define load_rc5_sz_decode() 0
-#endif
-
-enum StreamzapDecoderState {
- PulseSpace,
- FullPulse,
- FullSpace,
- IgnorePulse
-};
-
-/* structure to hold our device specific stuff */
-struct streamzap_ir {
-
- /* ir-core */
- struct ir_dev_props *props;
-
- /* core device info */
- struct device *dev;
- struct input_dev *idev;
-
- /* usb */
- struct usb_device *usbdev;
- struct usb_interface *interface;
- struct usb_endpoint_descriptor *endpoint;
- struct urb *urb_in;
-
- /* buffer & dma */
- unsigned char *buf_in;
- dma_addr_t dma_in;
- unsigned int buf_in_len;
-
- /* track what state we're in */
- enum StreamzapDecoderState decoder_state;
- /* tracks whether we are currently receiving some signal */
- bool idle;
- /* sum of signal lengths received since signal start */
- unsigned long sum;
- /* start time of signal; necessary for gap tracking */
- struct timeval signal_last;
- struct timeval signal_start;
- bool timeout_enabled;
-
- char name[128];
- char phys[64];
-};
-
-
-/* local function prototypes */
-static int streamzap_probe(struct usb_interface *interface,
- const struct usb_device_id *id);
-static void streamzap_disconnect(struct usb_interface *interface);
-static void streamzap_callback(struct urb *urb);
-static int streamzap_suspend(struct usb_interface *intf, pm_message_t message);
-static int streamzap_resume(struct usb_interface *intf);
-
-/* usb specific object needed to register this driver with the usb subsystem */
-static struct usb_driver streamzap_driver = {
- .name = DRIVER_NAME,
- .probe = streamzap_probe,
- .disconnect = streamzap_disconnect,
- .suspend = streamzap_suspend,
- .resume = streamzap_resume,
- .id_table = streamzap_table,
-};
-
-static void sz_push(struct streamzap_ir *sz, struct ir_raw_event rawir)
-{
- ir_raw_event_store(sz->idev, &rawir);
-}
-
-static void sz_push_full_pulse(struct streamzap_ir *sz,
- unsigned char value)
-{
- DEFINE_IR_RAW_EVENT(rawir);
-
- if (sz->idle) {
- long deltv;
-
- sz->signal_last = sz->signal_start;
- do_gettimeofday(&sz->signal_start);
-
- deltv = sz->signal_start.tv_sec - sz->signal_last.tv_sec;
- rawir.pulse = false;
- if (deltv > 15) {
- /* really long time */
- rawir.duration = IR_MAX_DURATION;
- } else {
- rawir.duration = (int)(deltv * 1000000 +
- sz->signal_start.tv_usec -
- sz->signal_last.tv_usec);
- rawir.duration -= sz->sum;
- rawir.duration *= 1000;
- rawir.duration &= IR_MAX_DURATION;
- }
- dev_dbg(sz->dev, "ls %u\n", rawir.duration);
- sz_push(sz, rawir);
-
- sz->idle = false;
- sz->sum = 0;
- }
-
- rawir.pulse = true;
- rawir.duration = ((int) value) * SZ_RESOLUTION;
- rawir.duration += SZ_RESOLUTION / 2;
- sz->sum += rawir.duration;
- rawir.duration *= 1000;
- rawir.duration &= IR_MAX_DURATION;
- dev_dbg(sz->dev, "p %u\n", rawir.duration);
- sz_push(sz, rawir);
-}
-
-static void sz_push_half_pulse(struct streamzap_ir *sz,
- unsigned char value)
-{
- sz_push_full_pulse(sz, (value & SZ_PULSE_MASK) >> 4);
-}
-
-static void sz_push_full_space(struct streamzap_ir *sz,
- unsigned char value)
-{
- DEFINE_IR_RAW_EVENT(rawir);
-
- rawir.pulse = false;
- rawir.duration = ((int) value) * SZ_RESOLUTION;
- rawir.duration += SZ_RESOLUTION / 2;
- sz->sum += rawir.duration;
- rawir.duration *= 1000;
- dev_dbg(sz->dev, "s %u\n", rawir.duration);
- sz_push(sz, rawir);
-}
-
-static void sz_push_half_space(struct streamzap_ir *sz,
- unsigned long value)
-{
- sz_push_full_space(sz, value & SZ_SPACE_MASK);
-}
-
-/**
- * streamzap_callback - usb IRQ handler callback
- *
- * This procedure is invoked on reception of data from
- * the usb remote.
- */
-static void streamzap_callback(struct urb *urb)
-{
- struct streamzap_ir *sz;
- unsigned int i;
- int len;
- static int timeout = (((SZ_TIMEOUT * SZ_RESOLUTION * 1000) &
- IR_MAX_DURATION) | 0x03000000);
-
- if (!urb)
- return;
-
- sz = urb->context;
- len = urb->actual_length;
-
- switch (urb->status) {
- case -ECONNRESET:
- case -ENOENT:
- case -ESHUTDOWN:
- /*
- * this urb is terminated, clean up.
- * sz might already be invalid at this point
- */
- dev_err(sz->dev, "urb terminated, status: %d\n", urb->status);
- return;
- default:
- break;
- }
-
- dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len);
- for (i = 0; i < len; i++) {
- dev_dbg(sz->dev, "sz idx %d: %x\n",
- i, (unsigned char)sz->buf_in[i]);
- switch (sz->decoder_state) {
- case PulseSpace:
- if ((sz->buf_in[i] & SZ_PULSE_MASK) ==
- SZ_PULSE_MASK) {
- sz->decoder_state = FullPulse;
- continue;
- } else if ((sz->buf_in[i] & SZ_SPACE_MASK)
- == SZ_SPACE_MASK) {
- sz_push_half_pulse(sz, sz->buf_in[i]);
- sz->decoder_state = FullSpace;
- continue;
- } else {
- sz_push_half_pulse(sz, sz->buf_in[i]);
- sz_push_half_space(sz, sz->buf_in[i]);
- }
- break;
- case FullPulse:
- sz_push_full_pulse(sz, sz->buf_in[i]);
- sz->decoder_state = IgnorePulse;
- break;
- case FullSpace:
- if (sz->buf_in[i] == SZ_TIMEOUT) {
- DEFINE_IR_RAW_EVENT(rawir);
-
- rawir.pulse = false;
- rawir.duration = timeout;
- sz->idle = true;
- if (sz->timeout_enabled)
- sz_push(sz, rawir);
- ir_raw_event_handle(sz->idev);
- } else {
- sz_push_full_space(sz, sz->buf_in[i]);
- }
- sz->decoder_state = PulseSpace;
- break;
- case IgnorePulse:
- if ((sz->buf_in[i] & SZ_SPACE_MASK) ==
- SZ_SPACE_MASK) {
- sz->decoder_state = FullSpace;
- continue;
- }
- sz_push_half_space(sz, sz->buf_in[i]);
- sz->decoder_state = PulseSpace;
- break;
- }
- }
-
- usb_submit_urb(urb, GFP_ATOMIC);
-
- return;
-}
-
-static struct input_dev *streamzap_init_input_dev(struct streamzap_ir *sz)
-{
- struct input_dev *idev;
- struct ir_dev_props *props;
- struct device *dev = sz->dev;
- int ret;
-
- idev = input_allocate_device();
- if (!idev) {
- dev_err(dev, "remote input dev allocation failed\n");
- goto idev_alloc_failed;
- }
-
- props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL);
- if (!props) {
- dev_err(dev, "remote ir dev props allocation failed\n");
- goto props_alloc_failed;
- }
-
- snprintf(sz->name, sizeof(sz->name), "Streamzap PC Remote Infrared "
- "Receiver (%04x:%04x)",
- le16_to_cpu(sz->usbdev->descriptor.idVendor),
- le16_to_cpu(sz->usbdev->descriptor.idProduct));
-
- idev->name = sz->name;
- usb_make_path(sz->usbdev, sz->phys, sizeof(sz->phys));
- strlcat(sz->phys, "/input0", sizeof(sz->phys));
- idev->phys = sz->phys;
-
- props->priv = sz;
- props->driver_type = RC_DRIVER_IR_RAW;
- props->allowed_protos = IR_TYPE_ALL;
-
- sz->props = props;
-
- ret = ir_input_register(idev, RC_MAP_STREAMZAP, props, DRIVER_NAME);
- if (ret < 0) {
- dev_err(dev, "remote input device register failed\n");
- goto irdev_failed;
- }
-
- return idev;
-
-irdev_failed:
- kfree(props);
-props_alloc_failed:
- input_free_device(idev);
-idev_alloc_failed:
- return NULL;
-}
-
-/**
- * streamzap_probe
- *
- * Called by usb-core to associated with a candidate device
- * On any failure the return value is the ERROR
- * On success return 0
- */
-static int __devinit streamzap_probe(struct usb_interface *intf,
- const struct usb_device_id *id)
-{
- struct usb_device *usbdev = interface_to_usbdev(intf);
- struct usb_host_interface *iface_host;
- struct streamzap_ir *sz = NULL;
- char buf[63], name[128] = "";
- int retval = -ENOMEM;
- int pipe, maxp;
-
- /* Allocate space for device driver specific data */
- sz = kzalloc(sizeof(struct streamzap_ir), GFP_KERNEL);
- if (!sz)
- return -ENOMEM;
-
- sz->usbdev = usbdev;
- sz->interface = intf;
-
- /* Check to ensure endpoint information matches requirements */
- iface_host = intf->cur_altsetting;
-
- if (iface_host->desc.bNumEndpoints != 1) {
- dev_err(&intf->dev, "%s: Unexpected desc.bNumEndpoints (%d)\n",
- __func__, iface_host->desc.bNumEndpoints);
- retval = -ENODEV;
- goto free_sz;
- }
-
- sz->endpoint = &(iface_host->endpoint[0].desc);
- if ((sz->endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
- != USB_DIR_IN) {
- dev_err(&intf->dev, "%s: endpoint doesn't match input device "
- "02%02x\n", __func__, sz->endpoint->bEndpointAddress);
- retval = -ENODEV;
- goto free_sz;
- }
-
- if ((sz->endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
- != USB_ENDPOINT_XFER_INT) {
- dev_err(&intf->dev, "%s: endpoint attributes don't match xfer "
- "02%02x\n", __func__, sz->endpoint->bmAttributes);
- retval = -ENODEV;
- goto free_sz;
- }
-
- pipe = usb_rcvintpipe(usbdev, sz->endpoint->bEndpointAddress);
- maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe));
-
- if (maxp == 0) {
- dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n",
- __func__);
- retval = -ENODEV;
- goto free_sz;
- }
-
- /* Allocate the USB buffer and IRQ URB */
- sz->buf_in = usb_alloc_coherent(usbdev, maxp, GFP_ATOMIC, &sz->dma_in);
- if (!sz->buf_in)
- goto free_sz;
-
- sz->urb_in = usb_alloc_urb(0, GFP_KERNEL);
- if (!sz->urb_in)
- goto free_buf_in;
-
- sz->dev = &intf->dev;
- sz->buf_in_len = maxp;
-
- if (usbdev->descriptor.iManufacturer
- && usb_string(usbdev, usbdev->descriptor.iManufacturer,
- buf, sizeof(buf)) > 0)
- strlcpy(name, buf, sizeof(name));
-
- if (usbdev->descriptor.iProduct
- && usb_string(usbdev, usbdev->descriptor.iProduct,
- buf, sizeof(buf)) > 0)
- snprintf(name + strlen(name), sizeof(name) - strlen(name),
- " %s", buf);
-
- sz->idev = streamzap_init_input_dev(sz);
- if (!sz->idev)
- goto input_dev_fail;
-
- sz->idle = true;
- sz->decoder_state = PulseSpace;
- /* FIXME: don't yet have a way to set this */
- sz->timeout_enabled = true;
- #if 0
- /* not yet supported, depends on patches from maxim */
- /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */
- sz->min_timeout = SZ_TIMEOUT * SZ_RESOLUTION * 1000;
- sz->max_timeout = SZ_TIMEOUT * SZ_RESOLUTION * 1000;
- #endif
-
- do_gettimeofday(&sz->signal_start);
-
- /* Complete final initialisations */
- usb_fill_int_urb(sz->urb_in, usbdev, pipe, sz->buf_in,
- maxp, (usb_complete_t)streamzap_callback,
- sz, sz->endpoint->bInterval);
- sz->urb_in->transfer_dma = sz->dma_in;
- sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-
- usb_set_intfdata(intf, sz);
-
- if (usb_submit_urb(sz->urb_in, GFP_ATOMIC))
- dev_err(sz->dev, "urb submit failed\n");
-
- dev_info(sz->dev, "Registered %s on usb%d:%d\n", name,
- usbdev->bus->busnum, usbdev->devnum);
-
- /* Load the streamzap not-quite-rc5 decoder too */
- load_rc5_sz_decode();
-
- return 0;
-
-input_dev_fail:
- usb_free_urb(sz->urb_in);
-free_buf_in:
- usb_free_coherent(usbdev, maxp, sz->buf_in, sz->dma_in);
-free_sz:
- kfree(sz);
-
- return retval;
-}
-
-/**
- * streamzap_disconnect
- *
- * Called by the usb core when the device is removed from the system.
- *
- * This routine guarantees that the driver will not submit any more urbs
- * by clearing dev->usbdev. It is also supposed to terminate any currently
- * active urbs. Unfortunately, usb_bulk_msg(), used in streamzap_read(),
- * does not provide any way to do this.
- */
-static void streamzap_disconnect(struct usb_interface *interface)
-{
- struct streamzap_ir *sz = usb_get_intfdata(interface);
- struct usb_device *usbdev = interface_to_usbdev(interface);
-
- usb_set_intfdata(interface, NULL);
-
- if (!sz)
- return;
-
- sz->usbdev = NULL;
- ir_input_unregister(sz->idev);
- usb_kill_urb(sz->urb_in);
- usb_free_urb(sz->urb_in);
- usb_free_coherent(usbdev, sz->buf_in_len, sz->buf_in, sz->dma_in);
-
- kfree(sz);
-}
-
-static int streamzap_suspend(struct usb_interface *intf, pm_message_t message)
-{
- struct streamzap_ir *sz = usb_get_intfdata(intf);
-
- usb_kill_urb(sz->urb_in);
-
- return 0;
-}
-
-static int streamzap_resume(struct usb_interface *intf)
-{
- struct streamzap_ir *sz = usb_get_intfdata(intf);
-
- if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) {
- dev_err(sz->dev, "Error sumbiting urb\n");
- return -EIO;
- }
-
- return 0;
-}
-
-/**
- * streamzap_init
- */
-static int __init streamzap_init(void)
-{
- int ret;
-
- /* register this driver with the USB subsystem */
- ret = usb_register(&streamzap_driver);
- if (ret < 0)
- printk(KERN_ERR DRIVER_NAME ": usb register failed, "
- "result = %d\n", ret);
-
- return ret;
-}
-
-/**
- * streamzap_exit
- */
-static void __exit streamzap_exit(void)
-{
- usb_deregister(&streamzap_driver);
-}
-
-
-module_init(streamzap_init);
-module_exit(streamzap_exit);
-
-MODULE_AUTHOR("Jarod Wilson <jarod@wilsonet.com>");
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
-
-module_param(debug, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "Enable debugging messages");
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-19 10:05:11 +0000