2c1101d5ae
Moves drivers/staging/lirc/lirc_streamzap.c to drivers/media/IR/streamzap.c, along with making the requisite Kconfig and Makefile changes. Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
741 lines
18 KiB
C
741 lines
18 KiB
C
/*
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* Streamzap Remote Control driver
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*
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* Copyright (c) 2005 Christoph Bartelmus <lirc@bartelmus.de>
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* Copyright (c) 2010 Jarod Wilson <jarod@wilsonet.com>
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*
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* This driver was based on the work of Greg Wickham and Adrian
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* Dewhurst. It was substantially rewritten to support correct signal
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* gaps and now maintains a delay buffer, which is used to present
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* consistent timing behaviour to user space applications. Without the
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* delay buffer an ugly hack would be required in lircd, which can
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* cause sluggish signal decoding in certain situations.
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*
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* Ported to in-kernel ir-core interface by Jarod Wilson
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*
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* This driver is based on the USB skeleton driver packaged with the
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* kernel; copyright (C) 2001-2003 Greg Kroah-Hartman (greg@kroah.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/usb.h>
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#include <linux/input.h>
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#include <media/ir-core.h>
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#define DRIVER_VERSION "1.60"
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#define DRIVER_NAME "streamzap"
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#define DRIVER_DESC "Streamzap Remote Control driver"
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#ifdef CONFIG_USB_DEBUG
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static int debug = 1;
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#else
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static int debug;
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#endif
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#define USB_STREAMZAP_VENDOR_ID 0x0e9c
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#define USB_STREAMZAP_PRODUCT_ID 0x0000
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/* table of devices that work with this driver */
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static struct usb_device_id streamzap_table[] = {
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/* Streamzap Remote Control */
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{ USB_DEVICE(USB_STREAMZAP_VENDOR_ID, USB_STREAMZAP_PRODUCT_ID) },
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/* Terminating entry */
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{ }
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};
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MODULE_DEVICE_TABLE(usb, streamzap_table);
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#define STREAMZAP_PULSE_MASK 0xf0
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#define STREAMZAP_SPACE_MASK 0x0f
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#define STREAMZAP_TIMEOUT 0xff
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#define STREAMZAP_RESOLUTION 256
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/* number of samples buffered */
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#define SZ_BUF_LEN 128
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enum StreamzapDecoderState {
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PulseSpace,
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FullPulse,
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FullSpace,
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IgnorePulse
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};
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/* structure to hold our device specific stuff */
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struct streamzap_ir {
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/* ir-core */
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struct ir_dev_props *props;
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struct ir_raw_event rawir;
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/* core device info */
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struct device *dev;
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struct input_dev *idev;
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/* usb */
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struct usb_device *usbdev;
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struct usb_interface *interface;
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struct usb_endpoint_descriptor *endpoint;
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struct urb *urb_in;
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/* buffer & dma */
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unsigned char *buf_in;
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dma_addr_t dma_in;
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unsigned int buf_in_len;
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/* timer used to support delay buffering */
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struct timer_list delay_timer;
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bool timer_running;
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spinlock_t timer_lock;
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struct timer_list flush_timer;
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bool flush;
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/* delay buffer */
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struct kfifo fifo;
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bool fifo_initialized;
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/* track what state we're in */
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enum StreamzapDecoderState decoder_state;
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/* tracks whether we are currently receiving some signal */
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bool idle;
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/* sum of signal lengths received since signal start */
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unsigned long sum;
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/* start time of signal; necessary for gap tracking */
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struct timeval signal_last;
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struct timeval signal_start;
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/* bool timeout_enabled; */
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char name[128];
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char phys[64];
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};
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/* local function prototypes */
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static int streamzap_probe(struct usb_interface *interface,
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const struct usb_device_id *id);
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static void streamzap_disconnect(struct usb_interface *interface);
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static void streamzap_callback(struct urb *urb);
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static int streamzap_suspend(struct usb_interface *intf, pm_message_t message);
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static int streamzap_resume(struct usb_interface *intf);
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/* usb specific object needed to register this driver with the usb subsystem */
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static struct usb_driver streamzap_driver = {
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.name = DRIVER_NAME,
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.probe = streamzap_probe,
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.disconnect = streamzap_disconnect,
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.suspend = streamzap_suspend,
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.resume = streamzap_resume,
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.id_table = streamzap_table,
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};
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static void streamzap_stop_timer(struct streamzap_ir *sz)
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{
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unsigned long flags;
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spin_lock_irqsave(&sz->timer_lock, flags);
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if (sz->timer_running) {
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sz->timer_running = false;
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spin_unlock_irqrestore(&sz->timer_lock, flags);
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del_timer_sync(&sz->delay_timer);
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} else {
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spin_unlock_irqrestore(&sz->timer_lock, flags);
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}
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}
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static void streamzap_flush_timeout(unsigned long arg)
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{
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struct streamzap_ir *sz = (struct streamzap_ir *)arg;
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dev_info(sz->dev, "%s: callback firing\n", __func__);
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/* finally start accepting data */
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sz->flush = false;
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}
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static void streamzap_delay_timeout(unsigned long arg)
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{
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struct streamzap_ir *sz = (struct streamzap_ir *)arg;
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struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
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unsigned long flags;
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int len, ret;
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static unsigned long delay;
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bool wake = false;
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/* deliver data every 10 ms */
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delay = msecs_to_jiffies(10);
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spin_lock_irqsave(&sz->timer_lock, flags);
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if (kfifo_len(&sz->fifo) > 0) {
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ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
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if (ret != sizeof(rawir))
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dev_err(sz->dev, "Problem w/kfifo_out...\n");
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ir_raw_event_store(sz->idev, &rawir);
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wake = true;
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}
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len = kfifo_len(&sz->fifo);
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if (len > 0) {
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while ((len < SZ_BUF_LEN / 2) &&
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(len < SZ_BUF_LEN * sizeof(int))) {
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ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
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if (ret != sizeof(rawir))
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dev_err(sz->dev, "Problem w/kfifo_out...\n");
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ir_raw_event_store(sz->idev, &rawir);
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wake = true;
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len = kfifo_len(&sz->fifo);
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}
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if (sz->timer_running)
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mod_timer(&sz->delay_timer, jiffies + delay);
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} else {
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sz->timer_running = false;
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}
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if (wake)
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ir_raw_event_handle(sz->idev);
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spin_unlock_irqrestore(&sz->timer_lock, flags);
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}
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static void streamzap_flush_delay_buffer(struct streamzap_ir *sz)
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{
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struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
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bool wake = false;
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int ret;
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while (kfifo_len(&sz->fifo) > 0) {
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ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
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if (ret != sizeof(rawir))
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dev_err(sz->dev, "Problem w/kfifo_out...\n");
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ir_raw_event_store(sz->idev, &rawir);
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wake = true;
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}
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if (wake)
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ir_raw_event_handle(sz->idev);
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}
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static void sz_push(struct streamzap_ir *sz)
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{
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struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
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unsigned long flags;
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int ret;
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spin_lock_irqsave(&sz->timer_lock, flags);
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if (kfifo_len(&sz->fifo) >= sizeof(int) * SZ_BUF_LEN) {
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ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
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if (ret != sizeof(rawir))
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dev_err(sz->dev, "Problem w/kfifo_out...\n");
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ir_raw_event_store(sz->idev, &rawir);
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}
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kfifo_in(&sz->fifo, &sz->rawir, sizeof(rawir));
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if (!sz->timer_running) {
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sz->delay_timer.expires = jiffies + (HZ / 10);
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add_timer(&sz->delay_timer);
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sz->timer_running = true;
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}
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spin_unlock_irqrestore(&sz->timer_lock, flags);
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}
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static void sz_push_full_pulse(struct streamzap_ir *sz,
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unsigned char value)
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{
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if (sz->idle) {
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long deltv;
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sz->signal_last = sz->signal_start;
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do_gettimeofday(&sz->signal_start);
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deltv = sz->signal_start.tv_sec - sz->signal_last.tv_sec;
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sz->rawir.pulse = false;
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if (deltv > 15) {
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/* really long time */
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sz->rawir.duration = IR_MAX_DURATION;
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} else {
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sz->rawir.duration = (int)(deltv * 1000000 +
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sz->signal_start.tv_usec -
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sz->signal_last.tv_usec);
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sz->rawir.duration -= sz->sum;
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sz->rawir.duration *= 1000;
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sz->rawir.duration &= IR_MAX_DURATION;
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}
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dev_dbg(sz->dev, "ls %u\n", sz->rawir.duration);
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sz_push(sz);
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sz->idle = 0;
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sz->sum = 0;
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}
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sz->rawir.pulse = true;
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sz->rawir.duration = ((int) value) * STREAMZAP_RESOLUTION;
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sz->rawir.duration += STREAMZAP_RESOLUTION / 2;
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sz->sum += sz->rawir.duration;
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sz->rawir.duration *= 1000;
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sz->rawir.duration &= IR_MAX_DURATION;
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dev_dbg(sz->dev, "p %u\n", sz->rawir.duration);
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sz_push(sz);
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}
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static void sz_push_half_pulse(struct streamzap_ir *sz,
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unsigned char value)
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{
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sz_push_full_pulse(sz, (value & STREAMZAP_PULSE_MASK) >> 4);
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}
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static void sz_push_full_space(struct streamzap_ir *sz,
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unsigned char value)
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{
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sz->rawir.pulse = false;
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sz->rawir.duration = ((int) value) * STREAMZAP_RESOLUTION;
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sz->rawir.duration += STREAMZAP_RESOLUTION / 2;
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sz->sum += sz->rawir.duration;
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sz->rawir.duration *= 1000;
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dev_dbg(sz->dev, "s %u\n", sz->rawir.duration);
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sz_push(sz);
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}
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static void sz_push_half_space(struct streamzap_ir *sz,
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unsigned long value)
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{
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sz_push_full_space(sz, value & STREAMZAP_SPACE_MASK);
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}
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/**
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* streamzap_callback - usb IRQ handler callback
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*
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* This procedure is invoked on reception of data from
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* the usb remote.
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*/
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static void streamzap_callback(struct urb *urb)
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{
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struct streamzap_ir *sz;
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unsigned int i;
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int len;
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#if 0
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static int timeout = (((STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION) &
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IR_MAX_DURATION) | 0x03000000);
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#endif
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if (!urb)
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return;
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sz = urb->context;
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len = urb->actual_length;
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switch (urb->status) {
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case -ECONNRESET:
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case -ENOENT:
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case -ESHUTDOWN:
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/*
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* this urb is terminated, clean up.
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* sz might already be invalid at this point
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*/
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dev_err(sz->dev, "urb terminated, status: %d\n", urb->status);
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return;
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default:
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break;
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}
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dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len);
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if (!sz->flush) {
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for (i = 0; i < urb->actual_length; i++) {
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dev_dbg(sz->dev, "%d: %x\n", i,
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(unsigned char)sz->buf_in[i]);
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switch (sz->decoder_state) {
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case PulseSpace:
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if ((sz->buf_in[i] & STREAMZAP_PULSE_MASK) ==
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STREAMZAP_PULSE_MASK) {
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sz->decoder_state = FullPulse;
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continue;
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} else if ((sz->buf_in[i] & STREAMZAP_SPACE_MASK)
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== STREAMZAP_SPACE_MASK) {
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sz_push_half_pulse(sz, sz->buf_in[i]);
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sz->decoder_state = FullSpace;
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continue;
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} else {
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sz_push_half_pulse(sz, sz->buf_in[i]);
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sz_push_half_space(sz, sz->buf_in[i]);
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}
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break;
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case FullPulse:
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sz_push_full_pulse(sz, sz->buf_in[i]);
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sz->decoder_state = IgnorePulse;
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break;
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case FullSpace:
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if (sz->buf_in[i] == STREAMZAP_TIMEOUT) {
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sz->idle = 1;
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streamzap_stop_timer(sz);
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#if 0
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if (sz->timeout_enabled) {
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sz->rawir.pulse = false;
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sz->rawir.duration = timeout;
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sz->rawir.duration *= 1000;
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sz_push(sz);
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}
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#endif
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streamzap_flush_delay_buffer(sz);
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} else
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sz_push_full_space(sz, sz->buf_in[i]);
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sz->decoder_state = PulseSpace;
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break;
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case IgnorePulse:
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if ((sz->buf_in[i]&STREAMZAP_SPACE_MASK) ==
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STREAMZAP_SPACE_MASK) {
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sz->decoder_state = FullSpace;
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continue;
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}
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sz_push_half_space(sz, sz->buf_in[i]);
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sz->decoder_state = PulseSpace;
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break;
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}
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}
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}
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usb_submit_urb(urb, GFP_ATOMIC);
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return;
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}
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|
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static struct input_dev *streamzap_init_input_dev(struct streamzap_ir *sz)
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{
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struct input_dev *idev;
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struct ir_dev_props *props;
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struct device *dev = sz->dev;
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int ret;
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idev = input_allocate_device();
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if (!idev) {
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dev_err(dev, "remote input dev allocation failed\n");
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goto idev_alloc_failed;
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}
|
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|
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props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL);
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if (!props) {
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dev_err(dev, "remote ir dev props allocation failed\n");
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goto props_alloc_failed;
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}
|
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|
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snprintf(sz->name, sizeof(sz->name), "Streamzap PC Remote Infrared "
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"Receiver (%04x:%04x)",
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le16_to_cpu(sz->usbdev->descriptor.idVendor),
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le16_to_cpu(sz->usbdev->descriptor.idProduct));
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|
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idev->name = sz->name;
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usb_make_path(sz->usbdev, sz->phys, sizeof(sz->phys));
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strlcat(sz->phys, "/input0", sizeof(sz->phys));
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idev->phys = sz->phys;
|
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|
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props->priv = sz;
|
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props->driver_type = RC_DRIVER_IR_RAW;
|
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/* FIXME: not sure about supported protocols, check on this */
|
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props->allowed_protos = IR_TYPE_RC5 | IR_TYPE_RC6;
|
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|
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sz->props = props;
|
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|
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ret = ir_input_register(idev, RC_MAP_RC5_STREAMZAP, props, DRIVER_NAME);
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if (ret < 0) {
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dev_err(dev, "remote input device register failed\n");
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goto irdev_failed;
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}
|
|
|
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return idev;
|
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|
|
irdev_failed:
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kfree(props);
|
|
props_alloc_failed:
|
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input_free_device(idev);
|
|
idev_alloc_failed:
|
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return NULL;
|
|
}
|
|
|
|
static int streamzap_delay_buf_init(struct streamzap_ir *sz)
|
|
{
|
|
int ret;
|
|
|
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ret = kfifo_alloc(&sz->fifo, sizeof(int) * SZ_BUF_LEN,
|
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GFP_KERNEL);
|
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if (ret == 0)
|
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sz->fifo_initialized = 1;
|
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|
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return ret;
|
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}
|
|
|
|
static void streamzap_start_flush_timer(struct streamzap_ir *sz)
|
|
{
|
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sz->flush_timer.expires = jiffies + HZ;
|
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sz->flush = true;
|
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add_timer(&sz->flush_timer);
|
|
|
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sz->urb_in->dev = sz->usbdev;
|
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if (usb_submit_urb(sz->urb_in, GFP_ATOMIC))
|
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dev_err(sz->dev, "urb submit failed\n");
|
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}
|
|
|
|
/**
|
|
* 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");
|