// SPDX-License-Identifier: GPL-2.0-or-later /* * Streamzap Remote Control driver * * Copyright (c) 2005 Christoph Bartelmus <[email protected]> * Copyright (c) 2010 Jarod Wilson <[email protected]> * * 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 ([email protected]) */ #include <linux/device.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/usb.h> #include <linux/usb/input.h> #include <media/rc-core.h> #define DRIVER_NAME … #define DRIVER_DESC … #define USB_STREAMZAP_VENDOR_ID … #define USB_STREAMZAP_PRODUCT_ID … /* table of devices that work with this driver */ static const struct usb_device_id streamzap_table[] = …; MODULE_DEVICE_TABLE(usb, streamzap_table); #define SZ_PULSE_MASK … #define SZ_SPACE_MASK … #define SZ_TIMEOUT … #define SZ_RESOLUTION … /* number of samples buffered */ #define SZ_BUF_LEN … enum StreamzapDecoderState { … }; /* structure to hold our device specific stuff */ struct streamzap_ir { … }; /* 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 = …; static void sz_push(struct streamzap_ir *sz, struct ir_raw_event rawir) { … } static void sz_push_full_pulse(struct streamzap_ir *sz, unsigned char value) { … } static void sz_push_half_pulse(struct streamzap_ir *sz, unsigned char value) { … } static void sz_push_full_space(struct streamzap_ir *sz, unsigned char value) { … } static void sz_push_half_space(struct streamzap_ir *sz, unsigned long value) { … } /* * 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) { … } static struct rc_dev *streamzap_init_rc_dev(struct streamzap_ir *sz, struct usb_device *usbdev) { … } /* * 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 streamzap_probe(struct usb_interface *intf, const struct usb_device_id *id) { … } /* * 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) { … } static int streamzap_suspend(struct usb_interface *intf, pm_message_t message) { … } static int streamzap_resume(struct usb_interface *intf) { … } module_usb_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…); MODULE_LICENSE(…) …;
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