132cf86f6SMauro Carvalho Chehab /* 232cf86f6SMauro Carvalho Chehab * Streamzap Remote Control driver 332cf86f6SMauro Carvalho Chehab * 432cf86f6SMauro Carvalho Chehab * Copyright (c) 2005 Christoph Bartelmus <lirc@bartelmus.de> 532cf86f6SMauro Carvalho Chehab * Copyright (c) 2010 Jarod Wilson <jarod@wilsonet.com> 632cf86f6SMauro Carvalho Chehab * 732cf86f6SMauro Carvalho Chehab * This driver was based on the work of Greg Wickham and Adrian 832cf86f6SMauro Carvalho Chehab * Dewhurst. It was substantially rewritten to support correct signal 932cf86f6SMauro Carvalho Chehab * gaps and now maintains a delay buffer, which is used to present 1032cf86f6SMauro Carvalho Chehab * consistent timing behaviour to user space applications. Without the 1132cf86f6SMauro Carvalho Chehab * delay buffer an ugly hack would be required in lircd, which can 1232cf86f6SMauro Carvalho Chehab * cause sluggish signal decoding in certain situations. 1332cf86f6SMauro Carvalho Chehab * 1432cf86f6SMauro Carvalho Chehab * Ported to in-kernel ir-core interface by Jarod Wilson 1532cf86f6SMauro Carvalho Chehab * 1632cf86f6SMauro Carvalho Chehab * This driver is based on the USB skeleton driver packaged with the 1732cf86f6SMauro Carvalho Chehab * kernel; copyright (C) 2001-2003 Greg Kroah-Hartman (greg@kroah.com) 1832cf86f6SMauro Carvalho Chehab * 1932cf86f6SMauro Carvalho Chehab * This program is free software; you can redistribute it and/or modify 2032cf86f6SMauro Carvalho Chehab * it under the terms of the GNU General Public License as published by 2132cf86f6SMauro Carvalho Chehab * the Free Software Foundation; either version 2 of the License, or 2232cf86f6SMauro Carvalho Chehab * (at your option) any later version. 2332cf86f6SMauro Carvalho Chehab * 2432cf86f6SMauro Carvalho Chehab * This program is distributed in the hope that it will be useful, 2532cf86f6SMauro Carvalho Chehab * but WITHOUT ANY WARRANTY; without even the implied warranty of 2632cf86f6SMauro Carvalho Chehab * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 2732cf86f6SMauro Carvalho Chehab * GNU General Public License for more details. 2832cf86f6SMauro Carvalho Chehab * 2932cf86f6SMauro Carvalho Chehab * You should have received a copy of the GNU General Public License 3032cf86f6SMauro Carvalho Chehab * along with this program; if not, write to the Free Software 3132cf86f6SMauro Carvalho Chehab * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 3232cf86f6SMauro Carvalho Chehab */ 3332cf86f6SMauro Carvalho Chehab 3432cf86f6SMauro Carvalho Chehab #include <linux/device.h> 3532cf86f6SMauro Carvalho Chehab #include <linux/module.h> 3632cf86f6SMauro Carvalho Chehab #include <linux/slab.h> 3732cf86f6SMauro Carvalho Chehab #include <linux/usb.h> 3832cf86f6SMauro Carvalho Chehab #include <linux/usb/input.h> 396bda9644SMauro Carvalho Chehab #include <media/rc-core.h> 4032cf86f6SMauro Carvalho Chehab 4132cf86f6SMauro Carvalho Chehab #define DRIVER_VERSION "1.61" 4232cf86f6SMauro Carvalho Chehab #define DRIVER_NAME "streamzap" 4332cf86f6SMauro Carvalho Chehab #define DRIVER_DESC "Streamzap Remote Control driver" 4432cf86f6SMauro Carvalho Chehab 4532cf86f6SMauro Carvalho Chehab #ifdef CONFIG_USB_DEBUG 4632cf86f6SMauro Carvalho Chehab static int debug = 1; 4732cf86f6SMauro Carvalho Chehab #else 4832cf86f6SMauro Carvalho Chehab static int debug; 4932cf86f6SMauro Carvalho Chehab #endif 5032cf86f6SMauro Carvalho Chehab 5132cf86f6SMauro Carvalho Chehab #define USB_STREAMZAP_VENDOR_ID 0x0e9c 5232cf86f6SMauro Carvalho Chehab #define USB_STREAMZAP_PRODUCT_ID 0x0000 5332cf86f6SMauro Carvalho Chehab 5432cf86f6SMauro Carvalho Chehab /* table of devices that work with this driver */ 5532cf86f6SMauro Carvalho Chehab static struct usb_device_id streamzap_table[] = { 5632cf86f6SMauro Carvalho Chehab /* Streamzap Remote Control */ 5732cf86f6SMauro Carvalho Chehab { USB_DEVICE(USB_STREAMZAP_VENDOR_ID, USB_STREAMZAP_PRODUCT_ID) }, 5832cf86f6SMauro Carvalho Chehab /* Terminating entry */ 5932cf86f6SMauro Carvalho Chehab { } 6032cf86f6SMauro Carvalho Chehab }; 6132cf86f6SMauro Carvalho Chehab 6232cf86f6SMauro Carvalho Chehab MODULE_DEVICE_TABLE(usb, streamzap_table); 6332cf86f6SMauro Carvalho Chehab 6432cf86f6SMauro Carvalho Chehab #define SZ_PULSE_MASK 0xf0 6532cf86f6SMauro Carvalho Chehab #define SZ_SPACE_MASK 0x0f 6632cf86f6SMauro Carvalho Chehab #define SZ_TIMEOUT 0xff 6732cf86f6SMauro Carvalho Chehab #define SZ_RESOLUTION 256 6832cf86f6SMauro Carvalho Chehab 6932cf86f6SMauro Carvalho Chehab /* number of samples buffered */ 7032cf86f6SMauro Carvalho Chehab #define SZ_BUF_LEN 128 7132cf86f6SMauro Carvalho Chehab 7232cf86f6SMauro Carvalho Chehab /* from ir-rc5-sz-decoder.c */ 7332cf86f6SMauro Carvalho Chehab #ifdef CONFIG_IR_RC5_SZ_DECODER_MODULE 7432cf86f6SMauro Carvalho Chehab #define load_rc5_sz_decode() request_module("ir-rc5-sz-decoder") 7532cf86f6SMauro Carvalho Chehab #else 760170f6bcSMauro Carvalho Chehab #define load_rc5_sz_decode() {} 7732cf86f6SMauro Carvalho Chehab #endif 7832cf86f6SMauro Carvalho Chehab 7932cf86f6SMauro Carvalho Chehab enum StreamzapDecoderState { 8032cf86f6SMauro Carvalho Chehab PulseSpace, 8132cf86f6SMauro Carvalho Chehab FullPulse, 8232cf86f6SMauro Carvalho Chehab FullSpace, 8332cf86f6SMauro Carvalho Chehab IgnorePulse 8432cf86f6SMauro Carvalho Chehab }; 8532cf86f6SMauro Carvalho Chehab 8632cf86f6SMauro Carvalho Chehab /* structure to hold our device specific stuff */ 8732cf86f6SMauro Carvalho Chehab struct streamzap_ir { 8832cf86f6SMauro Carvalho Chehab /* ir-core */ 89d8b4b582SDavid Härdeman struct rc_dev *rdev; 9032cf86f6SMauro Carvalho Chehab 9132cf86f6SMauro Carvalho Chehab /* core device info */ 9232cf86f6SMauro Carvalho Chehab struct device *dev; 9332cf86f6SMauro Carvalho Chehab 9432cf86f6SMauro Carvalho Chehab /* usb */ 9532cf86f6SMauro Carvalho Chehab struct usb_device *usbdev; 9632cf86f6SMauro Carvalho Chehab struct usb_interface *interface; 9732cf86f6SMauro Carvalho Chehab struct usb_endpoint_descriptor *endpoint; 9832cf86f6SMauro Carvalho Chehab struct urb *urb_in; 9932cf86f6SMauro Carvalho Chehab 10032cf86f6SMauro Carvalho Chehab /* buffer & dma */ 10132cf86f6SMauro Carvalho Chehab unsigned char *buf_in; 10232cf86f6SMauro Carvalho Chehab dma_addr_t dma_in; 10332cf86f6SMauro Carvalho Chehab unsigned int buf_in_len; 10432cf86f6SMauro Carvalho Chehab 10532cf86f6SMauro Carvalho Chehab /* track what state we're in */ 10632cf86f6SMauro Carvalho Chehab enum StreamzapDecoderState decoder_state; 10732cf86f6SMauro Carvalho Chehab /* tracks whether we are currently receiving some signal */ 10832cf86f6SMauro Carvalho Chehab bool idle; 10932cf86f6SMauro Carvalho Chehab /* sum of signal lengths received since signal start */ 11032cf86f6SMauro Carvalho Chehab unsigned long sum; 11132cf86f6SMauro Carvalho Chehab /* start time of signal; necessary for gap tracking */ 11232cf86f6SMauro Carvalho Chehab struct timeval signal_last; 11332cf86f6SMauro Carvalho Chehab struct timeval signal_start; 11432cf86f6SMauro Carvalho Chehab bool timeout_enabled; 11532cf86f6SMauro Carvalho Chehab 11632cf86f6SMauro Carvalho Chehab char name[128]; 11732cf86f6SMauro Carvalho Chehab char phys[64]; 11832cf86f6SMauro Carvalho Chehab }; 11932cf86f6SMauro Carvalho Chehab 12032cf86f6SMauro Carvalho Chehab 12132cf86f6SMauro Carvalho Chehab /* local function prototypes */ 12232cf86f6SMauro Carvalho Chehab static int streamzap_probe(struct usb_interface *interface, 12332cf86f6SMauro Carvalho Chehab const struct usb_device_id *id); 12432cf86f6SMauro Carvalho Chehab static void streamzap_disconnect(struct usb_interface *interface); 12532cf86f6SMauro Carvalho Chehab static void streamzap_callback(struct urb *urb); 12632cf86f6SMauro Carvalho Chehab static int streamzap_suspend(struct usb_interface *intf, pm_message_t message); 12732cf86f6SMauro Carvalho Chehab static int streamzap_resume(struct usb_interface *intf); 12832cf86f6SMauro Carvalho Chehab 12932cf86f6SMauro Carvalho Chehab /* usb specific object needed to register this driver with the usb subsystem */ 13032cf86f6SMauro Carvalho Chehab static struct usb_driver streamzap_driver = { 13132cf86f6SMauro Carvalho Chehab .name = DRIVER_NAME, 13232cf86f6SMauro Carvalho Chehab .probe = streamzap_probe, 13332cf86f6SMauro Carvalho Chehab .disconnect = streamzap_disconnect, 13432cf86f6SMauro Carvalho Chehab .suspend = streamzap_suspend, 13532cf86f6SMauro Carvalho Chehab .resume = streamzap_resume, 13632cf86f6SMauro Carvalho Chehab .id_table = streamzap_table, 13732cf86f6SMauro Carvalho Chehab }; 13832cf86f6SMauro Carvalho Chehab 13932cf86f6SMauro Carvalho Chehab static void sz_push(struct streamzap_ir *sz, struct ir_raw_event rawir) 14032cf86f6SMauro Carvalho Chehab { 14132cf86f6SMauro Carvalho Chehab dev_dbg(sz->dev, "Storing %s with duration %u us\n", 14232cf86f6SMauro Carvalho Chehab (rawir.pulse ? "pulse" : "space"), rawir.duration); 143d8b4b582SDavid Härdeman ir_raw_event_store_with_filter(sz->rdev, &rawir); 14432cf86f6SMauro Carvalho Chehab } 14532cf86f6SMauro Carvalho Chehab 14632cf86f6SMauro Carvalho Chehab static void sz_push_full_pulse(struct streamzap_ir *sz, 14732cf86f6SMauro Carvalho Chehab unsigned char value) 14832cf86f6SMauro Carvalho Chehab { 14932cf86f6SMauro Carvalho Chehab DEFINE_IR_RAW_EVENT(rawir); 15032cf86f6SMauro Carvalho Chehab 15132cf86f6SMauro Carvalho Chehab if (sz->idle) { 15232cf86f6SMauro Carvalho Chehab long deltv; 15332cf86f6SMauro Carvalho Chehab 15432cf86f6SMauro Carvalho Chehab sz->signal_last = sz->signal_start; 15532cf86f6SMauro Carvalho Chehab do_gettimeofday(&sz->signal_start); 15632cf86f6SMauro Carvalho Chehab 15732cf86f6SMauro Carvalho Chehab deltv = sz->signal_start.tv_sec - sz->signal_last.tv_sec; 15832cf86f6SMauro Carvalho Chehab rawir.pulse = false; 15932cf86f6SMauro Carvalho Chehab if (deltv > 15) { 16032cf86f6SMauro Carvalho Chehab /* really long time */ 16132cf86f6SMauro Carvalho Chehab rawir.duration = IR_MAX_DURATION; 16232cf86f6SMauro Carvalho Chehab } else { 16332cf86f6SMauro Carvalho Chehab rawir.duration = (int)(deltv * 1000000 + 16432cf86f6SMauro Carvalho Chehab sz->signal_start.tv_usec - 16532cf86f6SMauro Carvalho Chehab sz->signal_last.tv_usec); 16632cf86f6SMauro Carvalho Chehab rawir.duration -= sz->sum; 167b4608faeSJarod Wilson rawir.duration = US_TO_NS(rawir.duration); 16832cf86f6SMauro Carvalho Chehab rawir.duration &= IR_MAX_DURATION; 16932cf86f6SMauro Carvalho Chehab } 17032cf86f6SMauro Carvalho Chehab sz_push(sz, rawir); 17132cf86f6SMauro Carvalho Chehab 17232cf86f6SMauro Carvalho Chehab sz->idle = false; 17332cf86f6SMauro Carvalho Chehab sz->sum = 0; 17432cf86f6SMauro Carvalho Chehab } 17532cf86f6SMauro Carvalho Chehab 17632cf86f6SMauro Carvalho Chehab rawir.pulse = true; 17732cf86f6SMauro Carvalho Chehab rawir.duration = ((int) value) * SZ_RESOLUTION; 17832cf86f6SMauro Carvalho Chehab rawir.duration += SZ_RESOLUTION / 2; 17932cf86f6SMauro Carvalho Chehab sz->sum += rawir.duration; 180b4608faeSJarod Wilson rawir.duration = US_TO_NS(rawir.duration); 18132cf86f6SMauro Carvalho Chehab rawir.duration &= IR_MAX_DURATION; 18232cf86f6SMauro Carvalho Chehab sz_push(sz, rawir); 18332cf86f6SMauro Carvalho Chehab } 18432cf86f6SMauro Carvalho Chehab 18532cf86f6SMauro Carvalho Chehab static void sz_push_half_pulse(struct streamzap_ir *sz, 18632cf86f6SMauro Carvalho Chehab unsigned char value) 18732cf86f6SMauro Carvalho Chehab { 18832cf86f6SMauro Carvalho Chehab sz_push_full_pulse(sz, (value & SZ_PULSE_MASK) >> 4); 18932cf86f6SMauro Carvalho Chehab } 19032cf86f6SMauro Carvalho Chehab 19132cf86f6SMauro Carvalho Chehab static void sz_push_full_space(struct streamzap_ir *sz, 19232cf86f6SMauro Carvalho Chehab unsigned char value) 19332cf86f6SMauro Carvalho Chehab { 19432cf86f6SMauro Carvalho Chehab DEFINE_IR_RAW_EVENT(rawir); 19532cf86f6SMauro Carvalho Chehab 19632cf86f6SMauro Carvalho Chehab rawir.pulse = false; 19732cf86f6SMauro Carvalho Chehab rawir.duration = ((int) value) * SZ_RESOLUTION; 19832cf86f6SMauro Carvalho Chehab rawir.duration += SZ_RESOLUTION / 2; 19932cf86f6SMauro Carvalho Chehab sz->sum += rawir.duration; 200b4608faeSJarod Wilson rawir.duration = US_TO_NS(rawir.duration); 20132cf86f6SMauro Carvalho Chehab sz_push(sz, rawir); 20232cf86f6SMauro Carvalho Chehab } 20332cf86f6SMauro Carvalho Chehab 20432cf86f6SMauro Carvalho Chehab static void sz_push_half_space(struct streamzap_ir *sz, 20532cf86f6SMauro Carvalho Chehab unsigned long value) 20632cf86f6SMauro Carvalho Chehab { 20732cf86f6SMauro Carvalho Chehab sz_push_full_space(sz, value & SZ_SPACE_MASK); 20832cf86f6SMauro Carvalho Chehab } 20932cf86f6SMauro Carvalho Chehab 21032cf86f6SMauro Carvalho Chehab /** 21132cf86f6SMauro Carvalho Chehab * streamzap_callback - usb IRQ handler callback 21232cf86f6SMauro Carvalho Chehab * 21332cf86f6SMauro Carvalho Chehab * This procedure is invoked on reception of data from 21432cf86f6SMauro Carvalho Chehab * the usb remote. 21532cf86f6SMauro Carvalho Chehab */ 21632cf86f6SMauro Carvalho Chehab static void streamzap_callback(struct urb *urb) 21732cf86f6SMauro Carvalho Chehab { 21832cf86f6SMauro Carvalho Chehab struct streamzap_ir *sz; 21932cf86f6SMauro Carvalho Chehab unsigned int i; 22032cf86f6SMauro Carvalho Chehab int len; 22132cf86f6SMauro Carvalho Chehab 22232cf86f6SMauro Carvalho Chehab if (!urb) 22332cf86f6SMauro Carvalho Chehab return; 22432cf86f6SMauro Carvalho Chehab 22532cf86f6SMauro Carvalho Chehab sz = urb->context; 22632cf86f6SMauro Carvalho Chehab len = urb->actual_length; 22732cf86f6SMauro Carvalho Chehab 22832cf86f6SMauro Carvalho Chehab switch (urb->status) { 22932cf86f6SMauro Carvalho Chehab case -ECONNRESET: 23032cf86f6SMauro Carvalho Chehab case -ENOENT: 23132cf86f6SMauro Carvalho Chehab case -ESHUTDOWN: 23232cf86f6SMauro Carvalho Chehab /* 23332cf86f6SMauro Carvalho Chehab * this urb is terminated, clean up. 23432cf86f6SMauro Carvalho Chehab * sz might already be invalid at this point 23532cf86f6SMauro Carvalho Chehab */ 23632cf86f6SMauro Carvalho Chehab dev_err(sz->dev, "urb terminated, status: %d\n", urb->status); 23732cf86f6SMauro Carvalho Chehab return; 23832cf86f6SMauro Carvalho Chehab default: 23932cf86f6SMauro Carvalho Chehab break; 24032cf86f6SMauro Carvalho Chehab } 24132cf86f6SMauro Carvalho Chehab 24232cf86f6SMauro Carvalho Chehab dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len); 24332cf86f6SMauro Carvalho Chehab for (i = 0; i < len; i++) { 24432cf86f6SMauro Carvalho Chehab dev_dbg(sz->dev, "sz->buf_in[%d]: %x\n", 24532cf86f6SMauro Carvalho Chehab i, (unsigned char)sz->buf_in[i]); 24632cf86f6SMauro Carvalho Chehab switch (sz->decoder_state) { 24732cf86f6SMauro Carvalho Chehab case PulseSpace: 24832cf86f6SMauro Carvalho Chehab if ((sz->buf_in[i] & SZ_PULSE_MASK) == 24932cf86f6SMauro Carvalho Chehab SZ_PULSE_MASK) { 25032cf86f6SMauro Carvalho Chehab sz->decoder_state = FullPulse; 25132cf86f6SMauro Carvalho Chehab continue; 25232cf86f6SMauro Carvalho Chehab } else if ((sz->buf_in[i] & SZ_SPACE_MASK) 25332cf86f6SMauro Carvalho Chehab == SZ_SPACE_MASK) { 25432cf86f6SMauro Carvalho Chehab sz_push_half_pulse(sz, sz->buf_in[i]); 25532cf86f6SMauro Carvalho Chehab sz->decoder_state = FullSpace; 25632cf86f6SMauro Carvalho Chehab continue; 25732cf86f6SMauro Carvalho Chehab } else { 25832cf86f6SMauro Carvalho Chehab sz_push_half_pulse(sz, sz->buf_in[i]); 25932cf86f6SMauro Carvalho Chehab sz_push_half_space(sz, sz->buf_in[i]); 26032cf86f6SMauro Carvalho Chehab } 26132cf86f6SMauro Carvalho Chehab break; 26232cf86f6SMauro Carvalho Chehab case FullPulse: 26332cf86f6SMauro Carvalho Chehab sz_push_full_pulse(sz, sz->buf_in[i]); 26432cf86f6SMauro Carvalho Chehab sz->decoder_state = IgnorePulse; 26532cf86f6SMauro Carvalho Chehab break; 26632cf86f6SMauro Carvalho Chehab case FullSpace: 26732cf86f6SMauro Carvalho Chehab if (sz->buf_in[i] == SZ_TIMEOUT) { 26832cf86f6SMauro Carvalho Chehab DEFINE_IR_RAW_EVENT(rawir); 26932cf86f6SMauro Carvalho Chehab 27032cf86f6SMauro Carvalho Chehab rawir.pulse = false; 271d8b4b582SDavid Härdeman rawir.duration = sz->rdev->timeout; 27232cf86f6SMauro Carvalho Chehab sz->idle = true; 27332cf86f6SMauro Carvalho Chehab if (sz->timeout_enabled) 27432cf86f6SMauro Carvalho Chehab sz_push(sz, rawir); 275d8b4b582SDavid Härdeman ir_raw_event_handle(sz->rdev); 27656b0ec30SJarod Wilson ir_raw_event_reset(sz->rdev); 27732cf86f6SMauro Carvalho Chehab } else { 27832cf86f6SMauro Carvalho Chehab sz_push_full_space(sz, sz->buf_in[i]); 27932cf86f6SMauro Carvalho Chehab } 28032cf86f6SMauro Carvalho Chehab sz->decoder_state = PulseSpace; 28132cf86f6SMauro Carvalho Chehab break; 28232cf86f6SMauro Carvalho Chehab case IgnorePulse: 28332cf86f6SMauro Carvalho Chehab if ((sz->buf_in[i] & SZ_SPACE_MASK) == 28432cf86f6SMauro Carvalho Chehab SZ_SPACE_MASK) { 28532cf86f6SMauro Carvalho Chehab sz->decoder_state = FullSpace; 28632cf86f6SMauro Carvalho Chehab continue; 28732cf86f6SMauro Carvalho Chehab } 28832cf86f6SMauro Carvalho Chehab sz_push_half_space(sz, sz->buf_in[i]); 28932cf86f6SMauro Carvalho Chehab sz->decoder_state = PulseSpace; 29032cf86f6SMauro Carvalho Chehab break; 29132cf86f6SMauro Carvalho Chehab } 29232cf86f6SMauro Carvalho Chehab } 29332cf86f6SMauro Carvalho Chehab 29456b0ec30SJarod Wilson ir_raw_event_handle(sz->rdev); 29532cf86f6SMauro Carvalho Chehab usb_submit_urb(urb, GFP_ATOMIC); 29632cf86f6SMauro Carvalho Chehab 29732cf86f6SMauro Carvalho Chehab return; 29832cf86f6SMauro Carvalho Chehab } 29932cf86f6SMauro Carvalho Chehab 300d8b4b582SDavid Härdeman static struct rc_dev *streamzap_init_rc_dev(struct streamzap_ir *sz) 30132cf86f6SMauro Carvalho Chehab { 302d8b4b582SDavid Härdeman struct rc_dev *rdev; 30332cf86f6SMauro Carvalho Chehab struct device *dev = sz->dev; 30432cf86f6SMauro Carvalho Chehab int ret; 30532cf86f6SMauro Carvalho Chehab 306d8b4b582SDavid Härdeman rdev = rc_allocate_device(); 307d8b4b582SDavid Härdeman if (!rdev) { 308d8b4b582SDavid Härdeman dev_err(dev, "remote dev allocation failed\n"); 309d8b4b582SDavid Härdeman goto out; 31032cf86f6SMauro Carvalho Chehab } 31132cf86f6SMauro Carvalho Chehab 31232cf86f6SMauro Carvalho Chehab snprintf(sz->name, sizeof(sz->name), "Streamzap PC Remote Infrared " 31332cf86f6SMauro Carvalho Chehab "Receiver (%04x:%04x)", 31432cf86f6SMauro Carvalho Chehab le16_to_cpu(sz->usbdev->descriptor.idVendor), 31532cf86f6SMauro Carvalho Chehab le16_to_cpu(sz->usbdev->descriptor.idProduct)); 31632cf86f6SMauro Carvalho Chehab usb_make_path(sz->usbdev, sz->phys, sizeof(sz->phys)); 31732cf86f6SMauro Carvalho Chehab strlcat(sz->phys, "/input0", sizeof(sz->phys)); 31832cf86f6SMauro Carvalho Chehab 319d8b4b582SDavid Härdeman rdev->input_name = sz->name; 320d8b4b582SDavid Härdeman rdev->input_phys = sz->phys; 3215ad1a555SPaul Bender usb_to_input_id(sz->usbdev, &rdev->input_id); 3225ad1a555SPaul Bender rdev->dev.parent = dev; 323d8b4b582SDavid Härdeman rdev->priv = sz; 324d8b4b582SDavid Härdeman rdev->driver_type = RC_DRIVER_IR_RAW; 32552b66144SMauro Carvalho Chehab rdev->allowed_protos = RC_TYPE_ALL; 326d8b4b582SDavid Härdeman rdev->driver_name = DRIVER_NAME; 327d8b4b582SDavid Härdeman rdev->map_name = RC_MAP_STREAMZAP; 32832cf86f6SMauro Carvalho Chehab 329d8b4b582SDavid Härdeman ret = rc_register_device(rdev); 33032cf86f6SMauro Carvalho Chehab if (ret < 0) { 33132cf86f6SMauro Carvalho Chehab dev_err(dev, "remote input device register failed\n"); 332d8b4b582SDavid Härdeman goto out; 33332cf86f6SMauro Carvalho Chehab } 33432cf86f6SMauro Carvalho Chehab 335d8b4b582SDavid Härdeman return rdev; 33632cf86f6SMauro Carvalho Chehab 337d8b4b582SDavid Härdeman out: 338d8b4b582SDavid Härdeman rc_free_device(rdev); 33932cf86f6SMauro Carvalho Chehab return NULL; 34032cf86f6SMauro Carvalho Chehab } 34132cf86f6SMauro Carvalho Chehab 34232cf86f6SMauro Carvalho Chehab /** 34332cf86f6SMauro Carvalho Chehab * streamzap_probe 34432cf86f6SMauro Carvalho Chehab * 34532cf86f6SMauro Carvalho Chehab * Called by usb-core to associated with a candidate device 34632cf86f6SMauro Carvalho Chehab * On any failure the return value is the ERROR 34732cf86f6SMauro Carvalho Chehab * On success return 0 34832cf86f6SMauro Carvalho Chehab */ 34932cf86f6SMauro Carvalho Chehab static int __devinit streamzap_probe(struct usb_interface *intf, 35032cf86f6SMauro Carvalho Chehab const struct usb_device_id *id) 35132cf86f6SMauro Carvalho Chehab { 35232cf86f6SMauro Carvalho Chehab struct usb_device *usbdev = interface_to_usbdev(intf); 35332cf86f6SMauro Carvalho Chehab struct usb_host_interface *iface_host; 35432cf86f6SMauro Carvalho Chehab struct streamzap_ir *sz = NULL; 35532cf86f6SMauro Carvalho Chehab char buf[63], name[128] = ""; 35632cf86f6SMauro Carvalho Chehab int retval = -ENOMEM; 35732cf86f6SMauro Carvalho Chehab int pipe, maxp; 35832cf86f6SMauro Carvalho Chehab 35932cf86f6SMauro Carvalho Chehab /* Allocate space for device driver specific data */ 36032cf86f6SMauro Carvalho Chehab sz = kzalloc(sizeof(struct streamzap_ir), GFP_KERNEL); 36132cf86f6SMauro Carvalho Chehab if (!sz) 36232cf86f6SMauro Carvalho Chehab return -ENOMEM; 36332cf86f6SMauro Carvalho Chehab 36432cf86f6SMauro Carvalho Chehab sz->usbdev = usbdev; 36532cf86f6SMauro Carvalho Chehab sz->interface = intf; 36632cf86f6SMauro Carvalho Chehab 36732cf86f6SMauro Carvalho Chehab /* Check to ensure endpoint information matches requirements */ 36832cf86f6SMauro Carvalho Chehab iface_host = intf->cur_altsetting; 36932cf86f6SMauro Carvalho Chehab 37032cf86f6SMauro Carvalho Chehab if (iface_host->desc.bNumEndpoints != 1) { 37132cf86f6SMauro Carvalho Chehab dev_err(&intf->dev, "%s: Unexpected desc.bNumEndpoints (%d)\n", 37232cf86f6SMauro Carvalho Chehab __func__, iface_host->desc.bNumEndpoints); 37332cf86f6SMauro Carvalho Chehab retval = -ENODEV; 37432cf86f6SMauro Carvalho Chehab goto free_sz; 37532cf86f6SMauro Carvalho Chehab } 37632cf86f6SMauro Carvalho Chehab 37732cf86f6SMauro Carvalho Chehab sz->endpoint = &(iface_host->endpoint[0].desc); 37832cf86f6SMauro Carvalho Chehab if ((sz->endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 37932cf86f6SMauro Carvalho Chehab != USB_DIR_IN) { 38032cf86f6SMauro Carvalho Chehab dev_err(&intf->dev, "%s: endpoint doesn't match input device " 38132cf86f6SMauro Carvalho Chehab "02%02x\n", __func__, sz->endpoint->bEndpointAddress); 38232cf86f6SMauro Carvalho Chehab retval = -ENODEV; 38332cf86f6SMauro Carvalho Chehab goto free_sz; 38432cf86f6SMauro Carvalho Chehab } 38532cf86f6SMauro Carvalho Chehab 38632cf86f6SMauro Carvalho Chehab if ((sz->endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 38732cf86f6SMauro Carvalho Chehab != USB_ENDPOINT_XFER_INT) { 38832cf86f6SMauro Carvalho Chehab dev_err(&intf->dev, "%s: endpoint attributes don't match xfer " 38932cf86f6SMauro Carvalho Chehab "02%02x\n", __func__, sz->endpoint->bmAttributes); 39032cf86f6SMauro Carvalho Chehab retval = -ENODEV; 39132cf86f6SMauro Carvalho Chehab goto free_sz; 39232cf86f6SMauro Carvalho Chehab } 39332cf86f6SMauro Carvalho Chehab 39432cf86f6SMauro Carvalho Chehab pipe = usb_rcvintpipe(usbdev, sz->endpoint->bEndpointAddress); 39532cf86f6SMauro Carvalho Chehab maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe)); 39632cf86f6SMauro Carvalho Chehab 39732cf86f6SMauro Carvalho Chehab if (maxp == 0) { 39832cf86f6SMauro Carvalho Chehab dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n", 39932cf86f6SMauro Carvalho Chehab __func__); 40032cf86f6SMauro Carvalho Chehab retval = -ENODEV; 40132cf86f6SMauro Carvalho Chehab goto free_sz; 40232cf86f6SMauro Carvalho Chehab } 40332cf86f6SMauro Carvalho Chehab 40432cf86f6SMauro Carvalho Chehab /* Allocate the USB buffer and IRQ URB */ 40532cf86f6SMauro Carvalho Chehab sz->buf_in = usb_alloc_coherent(usbdev, maxp, GFP_ATOMIC, &sz->dma_in); 40632cf86f6SMauro Carvalho Chehab if (!sz->buf_in) 40732cf86f6SMauro Carvalho Chehab goto free_sz; 40832cf86f6SMauro Carvalho Chehab 40932cf86f6SMauro Carvalho Chehab sz->urb_in = usb_alloc_urb(0, GFP_KERNEL); 41032cf86f6SMauro Carvalho Chehab if (!sz->urb_in) 41132cf86f6SMauro Carvalho Chehab goto free_buf_in; 41232cf86f6SMauro Carvalho Chehab 41332cf86f6SMauro Carvalho Chehab sz->dev = &intf->dev; 41432cf86f6SMauro Carvalho Chehab sz->buf_in_len = maxp; 41532cf86f6SMauro Carvalho Chehab 41632cf86f6SMauro Carvalho Chehab if (usbdev->descriptor.iManufacturer 41732cf86f6SMauro Carvalho Chehab && usb_string(usbdev, usbdev->descriptor.iManufacturer, 41832cf86f6SMauro Carvalho Chehab buf, sizeof(buf)) > 0) 41932cf86f6SMauro Carvalho Chehab strlcpy(name, buf, sizeof(name)); 42032cf86f6SMauro Carvalho Chehab 42132cf86f6SMauro Carvalho Chehab if (usbdev->descriptor.iProduct 42232cf86f6SMauro Carvalho Chehab && usb_string(usbdev, usbdev->descriptor.iProduct, 42332cf86f6SMauro Carvalho Chehab buf, sizeof(buf)) > 0) 42432cf86f6SMauro Carvalho Chehab snprintf(name + strlen(name), sizeof(name) - strlen(name), 42532cf86f6SMauro Carvalho Chehab " %s", buf); 42632cf86f6SMauro Carvalho Chehab 427d8b4b582SDavid Härdeman sz->rdev = streamzap_init_rc_dev(sz); 428d8b4b582SDavid Härdeman if (!sz->rdev) 429d8b4b582SDavid Härdeman goto rc_dev_fail; 43032cf86f6SMauro Carvalho Chehab 43132cf86f6SMauro Carvalho Chehab sz->idle = true; 43232cf86f6SMauro Carvalho Chehab sz->decoder_state = PulseSpace; 43332cf86f6SMauro Carvalho Chehab /* FIXME: don't yet have a way to set this */ 43432cf86f6SMauro Carvalho Chehab sz->timeout_enabled = true; 435b4608faeSJarod Wilson sz->rdev->timeout = ((US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION) & 43632cf86f6SMauro Carvalho Chehab IR_MAX_DURATION) | 0x03000000); 43732cf86f6SMauro Carvalho Chehab #if 0 43832cf86f6SMauro Carvalho Chehab /* not yet supported, depends on patches from maxim */ 43932cf86f6SMauro Carvalho Chehab /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */ 440b4608faeSJarod Wilson sz->min_timeout = US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION); 441b4608faeSJarod Wilson sz->max_timeout = US_TO_NS(SZ_TIMEOUT * SZ_RESOLUTION); 44232cf86f6SMauro Carvalho Chehab #endif 44332cf86f6SMauro Carvalho Chehab 44432cf86f6SMauro Carvalho Chehab do_gettimeofday(&sz->signal_start); 44532cf86f6SMauro Carvalho Chehab 44632cf86f6SMauro Carvalho Chehab /* Complete final initialisations */ 44732cf86f6SMauro Carvalho Chehab usb_fill_int_urb(sz->urb_in, usbdev, pipe, sz->buf_in, 44832cf86f6SMauro Carvalho Chehab maxp, (usb_complete_t)streamzap_callback, 44932cf86f6SMauro Carvalho Chehab sz, sz->endpoint->bInterval); 45032cf86f6SMauro Carvalho Chehab sz->urb_in->transfer_dma = sz->dma_in; 45132cf86f6SMauro Carvalho Chehab sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 45232cf86f6SMauro Carvalho Chehab 45332cf86f6SMauro Carvalho Chehab usb_set_intfdata(intf, sz); 45432cf86f6SMauro Carvalho Chehab 45532cf86f6SMauro Carvalho Chehab if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) 45632cf86f6SMauro Carvalho Chehab dev_err(sz->dev, "urb submit failed\n"); 45732cf86f6SMauro Carvalho Chehab 45832cf86f6SMauro Carvalho Chehab dev_info(sz->dev, "Registered %s on usb%d:%d\n", name, 45932cf86f6SMauro Carvalho Chehab usbdev->bus->busnum, usbdev->devnum); 46032cf86f6SMauro Carvalho Chehab 46132cf86f6SMauro Carvalho Chehab /* Load the streamzap not-quite-rc5 decoder too */ 46232cf86f6SMauro Carvalho Chehab load_rc5_sz_decode(); 46332cf86f6SMauro Carvalho Chehab 46432cf86f6SMauro Carvalho Chehab return 0; 46532cf86f6SMauro Carvalho Chehab 466d8b4b582SDavid Härdeman rc_dev_fail: 46732cf86f6SMauro Carvalho Chehab usb_free_urb(sz->urb_in); 46832cf86f6SMauro Carvalho Chehab free_buf_in: 46932cf86f6SMauro Carvalho Chehab usb_free_coherent(usbdev, maxp, sz->buf_in, sz->dma_in); 47032cf86f6SMauro Carvalho Chehab free_sz: 47132cf86f6SMauro Carvalho Chehab kfree(sz); 47232cf86f6SMauro Carvalho Chehab 47332cf86f6SMauro Carvalho Chehab return retval; 47432cf86f6SMauro Carvalho Chehab } 47532cf86f6SMauro Carvalho Chehab 47632cf86f6SMauro Carvalho Chehab /** 47732cf86f6SMauro Carvalho Chehab * streamzap_disconnect 47832cf86f6SMauro Carvalho Chehab * 47932cf86f6SMauro Carvalho Chehab * Called by the usb core when the device is removed from the system. 48032cf86f6SMauro Carvalho Chehab * 48132cf86f6SMauro Carvalho Chehab * This routine guarantees that the driver will not submit any more urbs 48232cf86f6SMauro Carvalho Chehab * by clearing dev->usbdev. It is also supposed to terminate any currently 48332cf86f6SMauro Carvalho Chehab * active urbs. Unfortunately, usb_bulk_msg(), used in streamzap_read(), 48432cf86f6SMauro Carvalho Chehab * does not provide any way to do this. 48532cf86f6SMauro Carvalho Chehab */ 48632cf86f6SMauro Carvalho Chehab static void streamzap_disconnect(struct usb_interface *interface) 48732cf86f6SMauro Carvalho Chehab { 48832cf86f6SMauro Carvalho Chehab struct streamzap_ir *sz = usb_get_intfdata(interface); 48932cf86f6SMauro Carvalho Chehab struct usb_device *usbdev = interface_to_usbdev(interface); 49032cf86f6SMauro Carvalho Chehab 49132cf86f6SMauro Carvalho Chehab usb_set_intfdata(interface, NULL); 49232cf86f6SMauro Carvalho Chehab 49332cf86f6SMauro Carvalho Chehab if (!sz) 49432cf86f6SMauro Carvalho Chehab return; 49532cf86f6SMauro Carvalho Chehab 49632cf86f6SMauro Carvalho Chehab sz->usbdev = NULL; 497d8b4b582SDavid Härdeman rc_unregister_device(sz->rdev); 49832cf86f6SMauro Carvalho Chehab usb_kill_urb(sz->urb_in); 49932cf86f6SMauro Carvalho Chehab usb_free_urb(sz->urb_in); 50032cf86f6SMauro Carvalho Chehab usb_free_coherent(usbdev, sz->buf_in_len, sz->buf_in, sz->dma_in); 50132cf86f6SMauro Carvalho Chehab 50232cf86f6SMauro Carvalho Chehab kfree(sz); 50332cf86f6SMauro Carvalho Chehab } 50432cf86f6SMauro Carvalho Chehab 50532cf86f6SMauro Carvalho Chehab static int streamzap_suspend(struct usb_interface *intf, pm_message_t message) 50632cf86f6SMauro Carvalho Chehab { 50732cf86f6SMauro Carvalho Chehab struct streamzap_ir *sz = usb_get_intfdata(intf); 50832cf86f6SMauro Carvalho Chehab 50932cf86f6SMauro Carvalho Chehab usb_kill_urb(sz->urb_in); 51032cf86f6SMauro Carvalho Chehab 51132cf86f6SMauro Carvalho Chehab return 0; 51232cf86f6SMauro Carvalho Chehab } 51332cf86f6SMauro Carvalho Chehab 51432cf86f6SMauro Carvalho Chehab static int streamzap_resume(struct usb_interface *intf) 51532cf86f6SMauro Carvalho Chehab { 51632cf86f6SMauro Carvalho Chehab struct streamzap_ir *sz = usb_get_intfdata(intf); 51732cf86f6SMauro Carvalho Chehab 51832cf86f6SMauro Carvalho Chehab if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) { 51932cf86f6SMauro Carvalho Chehab dev_err(sz->dev, "Error sumbiting urb\n"); 52032cf86f6SMauro Carvalho Chehab return -EIO; 52132cf86f6SMauro Carvalho Chehab } 52232cf86f6SMauro Carvalho Chehab 52332cf86f6SMauro Carvalho Chehab return 0; 52432cf86f6SMauro Carvalho Chehab } 52532cf86f6SMauro Carvalho Chehab 52632cf86f6SMauro Carvalho Chehab /** 52732cf86f6SMauro Carvalho Chehab * streamzap_init 52832cf86f6SMauro Carvalho Chehab */ 52932cf86f6SMauro Carvalho Chehab static int __init streamzap_init(void) 53032cf86f6SMauro Carvalho Chehab { 53132cf86f6SMauro Carvalho Chehab int ret; 53232cf86f6SMauro Carvalho Chehab 53332cf86f6SMauro Carvalho Chehab /* register this driver with the USB subsystem */ 53432cf86f6SMauro Carvalho Chehab ret = usb_register(&streamzap_driver); 53532cf86f6SMauro Carvalho Chehab if (ret < 0) 53632cf86f6SMauro Carvalho Chehab printk(KERN_ERR DRIVER_NAME ": usb register failed, " 53732cf86f6SMauro Carvalho Chehab "result = %d\n", ret); 53832cf86f6SMauro Carvalho Chehab 53932cf86f6SMauro Carvalho Chehab return ret; 54032cf86f6SMauro Carvalho Chehab } 54132cf86f6SMauro Carvalho Chehab 54232cf86f6SMauro Carvalho Chehab /** 54332cf86f6SMauro Carvalho Chehab * streamzap_exit 54432cf86f6SMauro Carvalho Chehab */ 54532cf86f6SMauro Carvalho Chehab static void __exit streamzap_exit(void) 54632cf86f6SMauro Carvalho Chehab { 54732cf86f6SMauro Carvalho Chehab usb_deregister(&streamzap_driver); 54832cf86f6SMauro Carvalho Chehab } 54932cf86f6SMauro Carvalho Chehab 55032cf86f6SMauro Carvalho Chehab 55132cf86f6SMauro Carvalho Chehab module_init(streamzap_init); 55232cf86f6SMauro Carvalho Chehab module_exit(streamzap_exit); 55332cf86f6SMauro Carvalho Chehab 55432cf86f6SMauro Carvalho Chehab MODULE_AUTHOR("Jarod Wilson <jarod@wilsonet.com>"); 55532cf86f6SMauro Carvalho Chehab MODULE_DESCRIPTION(DRIVER_DESC); 55632cf86f6SMauro Carvalho Chehab MODULE_LICENSE("GPL"); 55732cf86f6SMauro Carvalho Chehab 55832cf86f6SMauro Carvalho Chehab module_param(debug, bool, S_IRUGO | S_IWUSR); 55932cf86f6SMauro Carvalho Chehab MODULE_PARM_DESC(debug, "Enable debugging messages"); 560