From patchwork Mon Aug 2 21:31:16 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jarod Wilson X-Patchwork-Id: 116602 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.4/8.14.3) with ESMTP id o72LVQIL014727 for ; Mon, 2 Aug 2010 21:31:26 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753097Ab0HBVbZ (ORCPT ); Mon, 2 Aug 2010 17:31:25 -0400 Received: from mx1.redhat.com ([209.132.183.28]:3788 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751581Ab0HBVbY (ORCPT ); Mon, 2 Aug 2010 17:31:24 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o72LVIZb016138 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 2 Aug 2010 17:31:20 -0400 Received: from ihatethathostname.lab.bos.redhat.com (ihatethathostname.lab.bos.redhat.com [10.16.43.238]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o72LVHdS021545 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 2 Aug 2010 17:31:18 -0400 Received: from ihatethathostname.lab.bos.redhat.com (ihatethathostname.lab.bos.redhat.com [127.0.0.1]) by ihatethathostname.lab.bos.redhat.com (8.14.4/8.14.3) with ESMTP id o72LVGwM017798; Mon, 2 Aug 2010 17:31:16 -0400 Received: (from jarod@localhost) by ihatethathostname.lab.bos.redhat.com (8.14.4/8.14.4/Submit) id o72LVGL6017796; Mon, 2 Aug 2010 17:31:16 -0400 X-Authentication-Warning: ihatethathostname.lab.bos.redhat.com: jarod set sender to jarod@redhat.com using -f Date: Mon, 2 Aug 2010 17:31:16 -0400 From: Jarod Wilson To: linux-media@vger.kernel.org, greg@kroah.com Cc: Maxim Levitsky , Christoph Bartelmus Subject: [PATCH 2/2] IR: put newly ported streamzap driver in proper home Message-ID: <20100802213116.GA17784@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20100802212922.GA17746@redhat.com> User-Agent: Mutt/1.5.20 (2009-12-10) X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Mon, 02 Aug 2010 21:31:27 +0000 (UTC) diff --git a/drivers/media/IR/Kconfig b/drivers/media/IR/Kconfig index e557ae0..19a9003 100644 --- a/drivers/media/IR/Kconfig +++ b/drivers/media/IR/Kconfig @@ -102,3 +102,15 @@ config IR_MCEUSB 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. diff --git a/drivers/media/IR/Makefile b/drivers/media/IR/Makefile index 2ae4f3a..2566fb4 100644 --- a/drivers/media/IR/Makefile +++ b/drivers/media/IR/Makefile @@ -16,3 +16,4 @@ obj-$(CONFIG_IR_LIRC_CODEC) += ir-lirc-codec.o # stand-alone IR receivers/transmitters obj-$(CONFIG_IR_IMON) += imon.o obj-$(CONFIG_IR_MCEUSB) += mceusb.o +obj-$(CONFIG_IR_STREAMZAP) += streamzap.o diff --git a/drivers/media/IR/streamzap.c b/drivers/media/IR/streamzap.c new file mode 100644 index 0000000..058e29f --- /dev/null +++ b/drivers/media/IR/streamzap.c @@ -0,0 +1,741 @@ +/* + * Streamzap Remote Control driver + * + * Copyright (c) 2005 Christoph Bartelmus + * Copyright (c) 2010 Jarod Wilson + * + * 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 +#include +#include +#include +#include +#include + +#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 "); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Enable debugging messages"); diff --git a/drivers/staging/lirc/Kconfig b/drivers/staging/lirc/Kconfig index a6b23fb..1b25e6c 100644 --- a/drivers/staging/lirc/Kconfig +++ b/drivers/staging/lirc/Kconfig @@ -90,12 +90,6 @@ config LIRC_SIR 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 diff --git a/drivers/staging/lirc/Makefile b/drivers/staging/lirc/Makefile index 42f8a78..0c7e051 100644 --- a/drivers/staging/lirc/Makefile +++ b/drivers/staging/lirc/Makefile @@ -14,7 +14,6 @@ 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-$(CONFIG_LIRC_STREAMZAP) += lirc_streamzap.o obj-$(CONFIG_LIRC_TTUSBIR) += lirc_ttusbir.o obj-$(CONFIG_LIRC_WPC8679L) += lirc_wpc8769l.o obj-$(CONFIG_LIRC_ZILOG) += lirc_zilog.o diff --git a/drivers/staging/lirc/lirc_streamzap.c b/drivers/staging/lirc/lirc_streamzap.c deleted file mode 100644 index 058e29f..0000000 --- a/drivers/staging/lirc/lirc_streamzap.c +++ /dev/null @@ -1,741 +0,0 @@ -/* - * Streamzap Remote Control driver - * - * Copyright (c) 2005 Christoph Bartelmus - * Copyright (c) 2010 Jarod Wilson - * - * 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 -#include -#include -#include -#include -#include - -#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 "); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); - -module_param(debug, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Enable debugging messages");