To compile this driver as a module, choose M here: the
module will be called mceusb.
+
+config IR_STREAMZAP
+ tristate "Streamzap PC Remote IR Receiver"
+ depends on USB_ARCH_HAS_HCD
+ depends on IR_CORE
+ select USB
+ ---help---
+ Say Y here if you want to use a Streamzap PC Remote
+ Infrared Receiver.
+
+ To compile this driver as a module, choose M here: the
+ module will be called streamzap.
# stand-alone IR receivers/transmitters
obj-$(CONFIG_IR_IMON) += imon.o
obj-$(CONFIG_IR_MCEUSB) += mceusb.o
+obj-$(CONFIG_IR_STREAMZAP) += streamzap.o
--- /dev/null
+/*
+ * 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 "1.60"
+#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 STREAMZAP_PULSE_MASK 0xf0
+#define STREAMZAP_SPACE_MASK 0x0f
+#define STREAMZAP_TIMEOUT 0xff
+#define STREAMZAP_RESOLUTION 256
+
+/* number of samples buffered */
+#define SZ_BUF_LEN 128
+
+enum StreamzapDecoderState {
+ PulseSpace,
+ FullPulse,
+ FullSpace,
+ IgnorePulse
+};
+
+/* structure to hold our device specific stuff */
+struct streamzap_ir {
+
+ /* ir-core */
+ struct ir_dev_props *props;
+ struct ir_raw_event rawir;
+
+ /* 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;
+
+ /* timer used to support delay buffering */
+ struct timer_list delay_timer;
+ bool timer_running;
+ spinlock_t timer_lock;
+ struct timer_list flush_timer;
+ bool flush;
+
+ /* delay buffer */
+ struct kfifo fifo;
+ bool fifo_initialized;
+
+ /* 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 streamzap_stop_timer(struct streamzap_ir *sz)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&sz->timer_lock, flags);
+ if (sz->timer_running) {
+ sz->timer_running = false;
+ spin_unlock_irqrestore(&sz->timer_lock, flags);
+ del_timer_sync(&sz->delay_timer);
+ } else {
+ spin_unlock_irqrestore(&sz->timer_lock, flags);
+ }
+}
+
+static void streamzap_flush_timeout(unsigned long arg)
+{
+ struct streamzap_ir *sz = (struct streamzap_ir *)arg;
+
+ dev_info(sz->dev, "%s: callback firing\n", __func__);
+
+ /* finally start accepting data */
+ sz->flush = false;
+}
+
+static void streamzap_delay_timeout(unsigned long arg)
+{
+ struct streamzap_ir *sz = (struct streamzap_ir *)arg;
+ struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
+ unsigned long flags;
+ int len, ret;
+ static unsigned long delay;
+ bool wake = false;
+
+ /* deliver data every 10 ms */
+ delay = msecs_to_jiffies(10);
+
+ spin_lock_irqsave(&sz->timer_lock, flags);
+
+ if (kfifo_len(&sz->fifo) > 0) {
+ ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
+ if (ret != sizeof(rawir))
+ dev_err(sz->dev, "Problem w/kfifo_out...\n");
+ ir_raw_event_store(sz->idev, &rawir);
+ wake = true;
+ }
+
+ len = kfifo_len(&sz->fifo);
+ if (len > 0) {
+ while ((len < SZ_BUF_LEN / 2) &&
+ (len < SZ_BUF_LEN * sizeof(int))) {
+ ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
+ if (ret != sizeof(rawir))
+ dev_err(sz->dev, "Problem w/kfifo_out...\n");
+ ir_raw_event_store(sz->idev, &rawir);
+ wake = true;
+ len = kfifo_len(&sz->fifo);
+ }
+ if (sz->timer_running)
+ mod_timer(&sz->delay_timer, jiffies + delay);
+
+ } else {
+ sz->timer_running = false;
+ }
+
+ if (wake)
+ ir_raw_event_handle(sz->idev);
+
+ spin_unlock_irqrestore(&sz->timer_lock, flags);
+}
+
+static void streamzap_flush_delay_buffer(struct streamzap_ir *sz)
+{
+ struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
+ bool wake = false;
+ int ret;
+
+ while (kfifo_len(&sz->fifo) > 0) {
+ ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
+ if (ret != sizeof(rawir))
+ dev_err(sz->dev, "Problem w/kfifo_out...\n");
+ ir_raw_event_store(sz->idev, &rawir);
+ wake = true;
+ }
+
+ if (wake)
+ ir_raw_event_handle(sz->idev);
+}
+
+static void sz_push(struct streamzap_ir *sz)
+{
+ struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&sz->timer_lock, flags);
+ if (kfifo_len(&sz->fifo) >= sizeof(int) * SZ_BUF_LEN) {
+ ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
+ if (ret != sizeof(rawir))
+ dev_err(sz->dev, "Problem w/kfifo_out...\n");
+ ir_raw_event_store(sz->idev, &rawir);
+ }
+
+ kfifo_in(&sz->fifo, &sz->rawir, sizeof(rawir));
+
+ if (!sz->timer_running) {
+ sz->delay_timer.expires = jiffies + (HZ / 10);
+ add_timer(&sz->delay_timer);
+ sz->timer_running = true;
+ }
+
+ spin_unlock_irqrestore(&sz->timer_lock, flags);
+}
+
+static void sz_push_full_pulse(struct streamzap_ir *sz,
+ unsigned char value)
+{
+ 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;
+ sz->rawir.pulse = false;
+ if (deltv > 15) {
+ /* really long time */
+ sz->rawir.duration = IR_MAX_DURATION;
+ } else {
+ sz->rawir.duration = (int)(deltv * 1000000 +
+ sz->signal_start.tv_usec -
+ sz->signal_last.tv_usec);
+ sz->rawir.duration -= sz->sum;
+ sz->rawir.duration *= 1000;
+ sz->rawir.duration &= IR_MAX_DURATION;
+ }
+ dev_dbg(sz->dev, "ls %u\n", sz->rawir.duration);
+ sz_push(sz);
+
+ sz->idle = 0;
+ sz->sum = 0;
+ }
+
+ sz->rawir.pulse = true;
+ sz->rawir.duration = ((int) value) * STREAMZAP_RESOLUTION;
+ sz->rawir.duration += STREAMZAP_RESOLUTION / 2;
+ sz->sum += sz->rawir.duration;
+ sz->rawir.duration *= 1000;
+ sz->rawir.duration &= IR_MAX_DURATION;
+ dev_dbg(sz->dev, "p %u\n", sz->rawir.duration);
+ sz_push(sz);
+}
+
+static void sz_push_half_pulse(struct streamzap_ir *sz,
+ unsigned char value)
+{
+ sz_push_full_pulse(sz, (value & STREAMZAP_PULSE_MASK) >> 4);
+}
+
+static void sz_push_full_space(struct streamzap_ir *sz,
+ unsigned char value)
+{
+ sz->rawir.pulse = false;
+ sz->rawir.duration = ((int) value) * STREAMZAP_RESOLUTION;
+ sz->rawir.duration += STREAMZAP_RESOLUTION / 2;
+ sz->sum += sz->rawir.duration;
+ sz->rawir.duration *= 1000;
+ dev_dbg(sz->dev, "s %u\n", sz->rawir.duration);
+ sz_push(sz);
+}
+
+static void sz_push_half_space(struct streamzap_ir *sz,
+ unsigned long value)
+{
+ sz_push_full_space(sz, value & STREAMZAP_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;
+ #if 0
+ static int timeout = (((STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION) &
+ IR_MAX_DURATION) | 0x03000000);
+ #endif
+
+ 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);
+ if (!sz->flush) {
+ for (i = 0; i < urb->actual_length; i++) {
+ dev_dbg(sz->dev, "%d: %x\n", i,
+ (unsigned char)sz->buf_in[i]);
+ switch (sz->decoder_state) {
+ case PulseSpace:
+ if ((sz->buf_in[i] & STREAMZAP_PULSE_MASK) ==
+ STREAMZAP_PULSE_MASK) {
+ sz->decoder_state = FullPulse;
+ continue;
+ } else if ((sz->buf_in[i] & STREAMZAP_SPACE_MASK)
+ == STREAMZAP_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] == STREAMZAP_TIMEOUT) {
+ sz->idle = 1;
+ streamzap_stop_timer(sz);
+ #if 0
+ if (sz->timeout_enabled) {
+ sz->rawir.pulse = false;
+ sz->rawir.duration = timeout;
+ sz->rawir.duration *= 1000;
+ sz_push(sz);
+ }
+ #endif
+ streamzap_flush_delay_buffer(sz);
+ } else
+ sz_push_full_space(sz, sz->buf_in[i]);
+ sz->decoder_state = PulseSpace;
+ break;
+ case IgnorePulse:
+ if ((sz->buf_in[i]&STREAMZAP_SPACE_MASK) ==
+ STREAMZAP_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;
+ /* FIXME: not sure about supported protocols, check on this */
+ props->allowed_protos = IR_TYPE_RC5 | IR_TYPE_RC6;
+
+ sz->props = props;
+
+ ret = ir_input_register(idev, RC_MAP_RC5_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;
+}
+
+static int streamzap_delay_buf_init(struct streamzap_ir *sz)
+{
+ int ret;
+
+ ret = kfifo_alloc(&sz->fifo, sizeof(int) * SZ_BUF_LEN,
+ GFP_KERNEL);
+ if (ret == 0)
+ sz->fifo_initialized = 1;
+
+ return ret;
+}
+
+static void streamzap_start_flush_timer(struct streamzap_ir *sz)
+{
+ sz->flush_timer.expires = jiffies + HZ;
+ sz->flush = true;
+ add_timer(&sz->flush_timer);
+
+ sz->urb_in->dev = sz->usbdev;
+ if (usb_submit_urb(sz->urb_in, GFP_ATOMIC))
+ dev_err(sz->dev, "urb submit failed\n");
+}
+
+/**
+ * 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);
+
+ retval = streamzap_delay_buf_init(sz);
+ if (retval) {
+ dev_err(&intf->dev, "%s: delay buffer init failed\n", __func__);
+ goto free_urb_in;
+ }
+
+ sz->idev = streamzap_init_input_dev(sz);
+ if (!sz->idev)
+ goto input_dev_fail;
+
+ sz->idle = true;
+ sz->decoder_state = PulseSpace;
+ #if 0
+ /* not yet supported, depends on patches from maxim */
+ /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */
+ sz->timeout_enabled = false;
+ sz->min_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION * 1000;
+ sz->max_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION * 1000;
+ #endif
+
+ init_timer(&sz->delay_timer);
+ sz->delay_timer.function = streamzap_delay_timeout;
+ sz->delay_timer.data = (unsigned long)sz;
+ spin_lock_init(&sz->timer_lock);
+
+ init_timer(&sz->flush_timer);
+ sz->flush_timer.function = streamzap_flush_timeout;
+ sz->flush_timer.data = (unsigned long)sz;
+
+ 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);
+
+ streamzap_start_flush_timer(sz);
+
+ dev_info(sz->dev, "Registered %s on usb%d:%d\n", name,
+ usbdev->bus->busnum, usbdev->devnum);
+
+ return 0;
+
+input_dev_fail:
+ kfifo_free(&sz->fifo);
+free_urb_in:
+ 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;
+
+ if (sz->flush) {
+ sz->flush = false;
+ del_timer_sync(&sz->flush_timer);
+ }
+
+ streamzap_stop_timer(sz);
+
+ 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);
+
+ if (sz->flush) {
+ sz->flush = false;
+ del_timer_sync(&sz->flush_timer);
+ }
+
+ streamzap_stop_timer(sz);
+
+ 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 (sz->fifo_initialized)
+ kfifo_reset(&sz->fifo);
+
+ sz->flush_timer.expires = jiffies + HZ;
+ sz->flush = true;
+ add_timer(&sz->flush_timer);
+
+ 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");
help
Driver for the SIR IrDA port
-config LIRC_STREAMZAP
- tristate "Streamzap PC Receiver"
- depends on LIRC_STAGING && USB
- help
- Driver for the Streamzap PC Receiver
-
config LIRC_TTUSBIR
tristate "Technotrend USB IR Receiver"
depends on LIRC_STAGING && USB
obj-$(CONFIG_LIRC_SASEM) += lirc_sasem.o
obj-$(CONFIG_LIRC_SERIAL) += lirc_serial.o
obj-$(CONFIG_LIRC_SIR) += lirc_sir.o
-obj-$(CONFIG_LIRC_STREAMZAP) += lirc_streamzap.o
obj-$(CONFIG_LIRC_TTUSBIR) += lirc_ttusbir.o
obj-$(CONFIG_LIRC_ZILOG) += lirc_zilog.o
+++ /dev/null
-/*
- * 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 "1.60"
-#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 STREAMZAP_PULSE_MASK 0xf0
-#define STREAMZAP_SPACE_MASK 0x0f
-#define STREAMZAP_TIMEOUT 0xff
-#define STREAMZAP_RESOLUTION 256
-
-/* number of samples buffered */
-#define SZ_BUF_LEN 128
-
-enum StreamzapDecoderState {
- PulseSpace,
- FullPulse,
- FullSpace,
- IgnorePulse
-};
-
-/* structure to hold our device specific stuff */
-struct streamzap_ir {
-
- /* ir-core */
- struct ir_dev_props *props;
- struct ir_raw_event rawir;
-
- /* 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;
-
- /* timer used to support delay buffering */
- struct timer_list delay_timer;
- bool timer_running;
- spinlock_t timer_lock;
- struct timer_list flush_timer;
- bool flush;
-
- /* delay buffer */
- struct kfifo fifo;
- bool fifo_initialized;
-
- /* 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 streamzap_stop_timer(struct streamzap_ir *sz)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&sz->timer_lock, flags);
- if (sz->timer_running) {
- sz->timer_running = false;
- spin_unlock_irqrestore(&sz->timer_lock, flags);
- del_timer_sync(&sz->delay_timer);
- } else {
- spin_unlock_irqrestore(&sz->timer_lock, flags);
- }
-}
-
-static void streamzap_flush_timeout(unsigned long arg)
-{
- struct streamzap_ir *sz = (struct streamzap_ir *)arg;
-
- dev_info(sz->dev, "%s: callback firing\n", __func__);
-
- /* finally start accepting data */
- sz->flush = false;
-}
-
-static void streamzap_delay_timeout(unsigned long arg)
-{
- struct streamzap_ir *sz = (struct streamzap_ir *)arg;
- struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
- unsigned long flags;
- int len, ret;
- static unsigned long delay;
- bool wake = false;
-
- /* deliver data every 10 ms */
- delay = msecs_to_jiffies(10);
-
- spin_lock_irqsave(&sz->timer_lock, flags);
-
- if (kfifo_len(&sz->fifo) > 0) {
- ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
- if (ret != sizeof(rawir))
- dev_err(sz->dev, "Problem w/kfifo_out...\n");
- ir_raw_event_store(sz->idev, &rawir);
- wake = true;
- }
-
- len = kfifo_len(&sz->fifo);
- if (len > 0) {
- while ((len < SZ_BUF_LEN / 2) &&
- (len < SZ_BUF_LEN * sizeof(int))) {
- ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
- if (ret != sizeof(rawir))
- dev_err(sz->dev, "Problem w/kfifo_out...\n");
- ir_raw_event_store(sz->idev, &rawir);
- wake = true;
- len = kfifo_len(&sz->fifo);
- }
- if (sz->timer_running)
- mod_timer(&sz->delay_timer, jiffies + delay);
-
- } else {
- sz->timer_running = false;
- }
-
- if (wake)
- ir_raw_event_handle(sz->idev);
-
- spin_unlock_irqrestore(&sz->timer_lock, flags);
-}
-
-static void streamzap_flush_delay_buffer(struct streamzap_ir *sz)
-{
- struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
- bool wake = false;
- int ret;
-
- while (kfifo_len(&sz->fifo) > 0) {
- ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
- if (ret != sizeof(rawir))
- dev_err(sz->dev, "Problem w/kfifo_out...\n");
- ir_raw_event_store(sz->idev, &rawir);
- wake = true;
- }
-
- if (wake)
- ir_raw_event_handle(sz->idev);
-}
-
-static void sz_push(struct streamzap_ir *sz)
-{
- struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
- unsigned long flags;
- int ret;
-
- spin_lock_irqsave(&sz->timer_lock, flags);
- if (kfifo_len(&sz->fifo) >= sizeof(int) * SZ_BUF_LEN) {
- ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
- if (ret != sizeof(rawir))
- dev_err(sz->dev, "Problem w/kfifo_out...\n");
- ir_raw_event_store(sz->idev, &rawir);
- }
-
- kfifo_in(&sz->fifo, &sz->rawir, sizeof(rawir));
-
- if (!sz->timer_running) {
- sz->delay_timer.expires = jiffies + (HZ / 10);
- add_timer(&sz->delay_timer);
- sz->timer_running = true;
- }
-
- spin_unlock_irqrestore(&sz->timer_lock, flags);
-}
-
-static void sz_push_full_pulse(struct streamzap_ir *sz,
- unsigned char value)
-{
- 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;
- sz->rawir.pulse = false;
- if (deltv > 15) {
- /* really long time */
- sz->rawir.duration = IR_MAX_DURATION;
- } else {
- sz->rawir.duration = (int)(deltv * 1000000 +
- sz->signal_start.tv_usec -
- sz->signal_last.tv_usec);
- sz->rawir.duration -= sz->sum;
- sz->rawir.duration *= 1000;
- sz->rawir.duration &= IR_MAX_DURATION;
- }
- dev_dbg(sz->dev, "ls %u\n", sz->rawir.duration);
- sz_push(sz);
-
- sz->idle = 0;
- sz->sum = 0;
- }
-
- sz->rawir.pulse = true;
- sz->rawir.duration = ((int) value) * STREAMZAP_RESOLUTION;
- sz->rawir.duration += STREAMZAP_RESOLUTION / 2;
- sz->sum += sz->rawir.duration;
- sz->rawir.duration *= 1000;
- sz->rawir.duration &= IR_MAX_DURATION;
- dev_dbg(sz->dev, "p %u\n", sz->rawir.duration);
- sz_push(sz);
-}
-
-static void sz_push_half_pulse(struct streamzap_ir *sz,
- unsigned char value)
-{
- sz_push_full_pulse(sz, (value & STREAMZAP_PULSE_MASK) >> 4);
-}
-
-static void sz_push_full_space(struct streamzap_ir *sz,
- unsigned char value)
-{
- sz->rawir.pulse = false;
- sz->rawir.duration = ((int) value) * STREAMZAP_RESOLUTION;
- sz->rawir.duration += STREAMZAP_RESOLUTION / 2;
- sz->sum += sz->rawir.duration;
- sz->rawir.duration *= 1000;
- dev_dbg(sz->dev, "s %u\n", sz->rawir.duration);
- sz_push(sz);
-}
-
-static void sz_push_half_space(struct streamzap_ir *sz,
- unsigned long value)
-{
- sz_push_full_space(sz, value & STREAMZAP_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;
- #if 0
- static int timeout = (((STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION) &
- IR_MAX_DURATION) | 0x03000000);
- #endif
-
- 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);
- if (!sz->flush) {
- for (i = 0; i < urb->actual_length; i++) {
- dev_dbg(sz->dev, "%d: %x\n", i,
- (unsigned char)sz->buf_in[i]);
- switch (sz->decoder_state) {
- case PulseSpace:
- if ((sz->buf_in[i] & STREAMZAP_PULSE_MASK) ==
- STREAMZAP_PULSE_MASK) {
- sz->decoder_state = FullPulse;
- continue;
- } else if ((sz->buf_in[i] & STREAMZAP_SPACE_MASK)
- == STREAMZAP_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] == STREAMZAP_TIMEOUT) {
- sz->idle = 1;
- streamzap_stop_timer(sz);
- #if 0
- if (sz->timeout_enabled) {
- sz->rawir.pulse = false;
- sz->rawir.duration = timeout;
- sz->rawir.duration *= 1000;
- sz_push(sz);
- }
- #endif
- streamzap_flush_delay_buffer(sz);
- } else
- sz_push_full_space(sz, sz->buf_in[i]);
- sz->decoder_state = PulseSpace;
- break;
- case IgnorePulse:
- if ((sz->buf_in[i]&STREAMZAP_SPACE_MASK) ==
- STREAMZAP_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;
- /* FIXME: not sure about supported protocols, check on this */
- props->allowed_protos = IR_TYPE_RC5 | IR_TYPE_RC6;
-
- sz->props = props;
-
- ret = ir_input_register(idev, RC_MAP_RC5_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;
-}
-
-static int streamzap_delay_buf_init(struct streamzap_ir *sz)
-{
- int ret;
-
- ret = kfifo_alloc(&sz->fifo, sizeof(int) * SZ_BUF_LEN,
- GFP_KERNEL);
- if (ret == 0)
- sz->fifo_initialized = 1;
-
- return ret;
-}
-
-static void streamzap_start_flush_timer(struct streamzap_ir *sz)
-{
- sz->flush_timer.expires = jiffies + HZ;
- sz->flush = true;
- add_timer(&sz->flush_timer);
-
- sz->urb_in->dev = sz->usbdev;
- if (usb_submit_urb(sz->urb_in, GFP_ATOMIC))
- dev_err(sz->dev, "urb submit failed\n");
-}
-
-/**
- * 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);
-
- retval = streamzap_delay_buf_init(sz);
- if (retval) {
- dev_err(&intf->dev, "%s: delay buffer init failed\n", __func__);
- goto free_urb_in;
- }
-
- sz->idev = streamzap_init_input_dev(sz);
- if (!sz->idev)
- goto input_dev_fail;
-
- sz->idle = true;
- sz->decoder_state = PulseSpace;
- #if 0
- /* not yet supported, depends on patches from maxim */
- /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */
- sz->timeout_enabled = false;
- sz->min_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION * 1000;
- sz->max_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION * 1000;
- #endif
-
- init_timer(&sz->delay_timer);
- sz->delay_timer.function = streamzap_delay_timeout;
- sz->delay_timer.data = (unsigned long)sz;
- spin_lock_init(&sz->timer_lock);
-
- init_timer(&sz->flush_timer);
- sz->flush_timer.function = streamzap_flush_timeout;
- sz->flush_timer.data = (unsigned long)sz;
-
- 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);
-
- streamzap_start_flush_timer(sz);
-
- dev_info(sz->dev, "Registered %s on usb%d:%d\n", name,
- usbdev->bus->busnum, usbdev->devnum);
-
- return 0;
-
-input_dev_fail:
- kfifo_free(&sz->fifo);
-free_urb_in:
- 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;
-
- if (sz->flush) {
- sz->flush = false;
- del_timer_sync(&sz->flush_timer);
- }
-
- streamzap_stop_timer(sz);
-
- 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);
-
- if (sz->flush) {
- sz->flush = false;
- del_timer_sync(&sz->flush_timer);
- }
-
- streamzap_stop_timer(sz);
-
- 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 (sz->fifo_initialized)
- kfifo_reset(&sz->fifo);
-
- sz->flush_timer.expires = jiffies + HZ;
- sz->flush = true;
- add_timer(&sz->flush_timer);
-
- 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");
projects / platform / kernel / linux-exynos.git / commitdiff