From patchwork Fri May 28 20:05:20 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jarod Wilson X-Patchwork-Id: 102975 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o4SK5cJD001279 for ; Fri, 28 May 2010 20:05:57 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758678Ab0E1UFZ (ORCPT ); Fri, 28 May 2010 16:05:25 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50247 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756599Ab0E1UFV (ORCPT ); Fri, 28 May 2010 16:05:21 -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 o4SK5LVq032090 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 28 May 2010 16:05:21 -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 o4SK5KfC006352 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 28 May 2010 16:05:21 -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 o4SK5K3r007436 for ; Fri, 28 May 2010 16:05:20 -0400 Received: (from jarod@localhost) by ihatethathostname.lab.bos.redhat.com (8.14.4/8.14.4/Submit) id o4SK5KC2007434 for linux-media@vger.kernel.org; Fri, 28 May 2010 16:05:20 -0400 X-Authentication-Warning: ihatethathostname.lab.bos.redhat.com: jarod set sender to jarod@redhat.com using -f Date: Fri, 28 May 2010 16:05:20 -0400 From: Jarod Wilson To: linux-media@vger.kernel.org Subject: [PATCH 2/2] IR: add mceusb IR receiver driver Message-ID: <20100528200519.GB7397@redhat.com> References: <20100528200218.GA7313@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20100528200218.GA7313@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]); Fri, 28 May 2010 20:05:58 +0000 (UTC) diff --git a/drivers/media/IR/Kconfig b/drivers/media/IR/Kconfig index 195c6cf..7ffa86f 100644 --- a/drivers/media/IR/Kconfig +++ b/drivers/media/IR/Kconfig @@ -66,3 +66,15 @@ config IR_IMON To compile this driver as a module, choose M here: the module will be called imon. + +config IR_MCEUSB + tristate "Windows Media Center Ed. eHome Infrared Transceiver" + depends on USB_ARCH_HAS_HCD + depends on IR_CORE + select USB + ---help--- + Say Y here if you want to use a Windows Media Center Edition + eHome Infrared Transceiver. + + To compile this driver as a module, choose M here: the + module will be called mceusb. diff --git a/drivers/media/IR/Makefile b/drivers/media/IR/Makefile index b998fcc..b43fe36 100644 --- a/drivers/media/IR/Makefile +++ b/drivers/media/IR/Makefile @@ -13,3 +13,4 @@ obj-$(CONFIG_IR_SONY_DECODER) += ir-sony-decoder.o # stand-alone IR receivers/transmitters obj-$(CONFIG_IR_IMON) += imon.o +obj-$(CONFIG_IR_MCEUSB) += mceusb.o diff --git a/drivers/media/IR/mceusb.c b/drivers/media/IR/mceusb.c new file mode 100644 index 0000000..5729e5f --- /dev/null +++ b/drivers/media/IR/mceusb.c @@ -0,0 +1,1081 @@ +/* + * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers + * + * Copyright (c) 2010 by Jarod Wilson + * + * Based on the original lirc_mceusb and lirc_mceusb2 drivers, by Dan + * Conti, Martin Blatter and Daniel Melander, the latter of which was + * in turn also based on the lirc_atiusb driver by Paul Miller. The + * two mce drivers were merged into one by Jarod Wilson, with transmit + * support for the 1st-gen device added primarily by Patrick Calhoun, + * with a bit of tweaks by Jarod. Debugging improvements and proper + * support for what appears to be 3rd-gen hardware added by Jarod. + * Initial port from lirc driver to ir-core drivery by Jarod, based + * partially on a port to an earlier proposed IR infrastructure by + * Jon Smirl, which included enhancements and simplifications to the + * incoming IR buffer parsing routines. + * + * TODO: + * - add rc-core transmit support, once available + * - enable support for forthcoming ir-lirc-codec interface + * + * + * 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 +#include + +#define DRIVER_VERSION "1.91" +#define DRIVER_AUTHOR "Jarod Wilson " +#define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \ + "device driver" +#define DRIVER_NAME "mceusb" + +#define USB_BUFLEN 32 /* USB reception buffer length */ +#define IRBUF_SIZE 256 /* IR work buffer length */ + +/* MCE constants */ +#define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */ +#define MCE_TIME_UNIT 50 /* Approx 50us resolution */ +#define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */ +#define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */ +#define MCE_PACKET_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */ +#define MCE_CONTROL_HEADER 0x9F /* MCE status header */ +#define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */ +#define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */ +#define MCE_DEFAULT_TX_MASK 0x03 /* Val opts: TX1=0x01, TX2=0x02, ALL=0x03 */ +#define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */ +#define MCE_PULSE_MASK 0x7F /* Pulse mask */ +#define MCE_MAX_PULSE_LENGTH 0x7F /* Longest transmittable pulse symbol */ +#define MCE_PACKET_LENGTH_MASK 0xF /* Packet length mask */ + + +/* module parameters */ +#ifdef CONFIG_USB_DEBUG +static int debug = 1; +#else +static int debug; +#endif + +/* general constants */ +#define SEND_FLAG_IN_PROGRESS 1 +#define SEND_FLAG_COMPLETE 2 +#define RECV_FLAG_IN_PROGRESS 3 +#define RECV_FLAG_COMPLETE 4 + +#define MCEUSB_RX 1 +#define MCEUSB_TX 2 + +#define VENDOR_PHILIPS 0x0471 +#define VENDOR_SMK 0x0609 +#define VENDOR_TATUNG 0x1460 +#define VENDOR_GATEWAY 0x107b +#define VENDOR_SHUTTLE 0x1308 +#define VENDOR_SHUTTLE2 0x051c +#define VENDOR_MITSUMI 0x03ee +#define VENDOR_TOPSEED 0x1784 +#define VENDOR_RICAVISION 0x179d +#define VENDOR_ITRON 0x195d +#define VENDOR_FIC 0x1509 +#define VENDOR_LG 0x043e +#define VENDOR_MICROSOFT 0x045e +#define VENDOR_FORMOSA 0x147a +#define VENDOR_FINTEK 0x1934 +#define VENDOR_PINNACLE 0x2304 +#define VENDOR_ECS 0x1019 +#define VENDOR_WISTRON 0x0fb8 +#define VENDOR_COMPRO 0x185b +#define VENDOR_NORTHSTAR 0x04eb +#define VENDOR_REALTEK 0x0bda +#define VENDOR_TIVO 0x105a + +static struct usb_device_id mceusb_dev_table[] = { + /* Original Microsoft MCE IR Transceiver (often HP-branded) */ + { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) }, + /* Philips Infrared Transceiver - Sahara branded */ + { USB_DEVICE(VENDOR_PHILIPS, 0x0608) }, + /* Philips Infrared Transceiver - HP branded */ + { USB_DEVICE(VENDOR_PHILIPS, 0x060c) }, + /* Philips SRM5100 */ + { USB_DEVICE(VENDOR_PHILIPS, 0x060d) }, + /* Philips Infrared Transceiver - Omaura */ + { USB_DEVICE(VENDOR_PHILIPS, 0x060f) }, + /* Philips Infrared Transceiver - Spinel plus */ + { USB_DEVICE(VENDOR_PHILIPS, 0x0613) }, + /* Philips eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_PHILIPS, 0x0815) }, + /* Realtek MCE IR Receiver */ + { USB_DEVICE(VENDOR_REALTEK, 0x0161) }, + /* SMK/Toshiba G83C0004D410 */ + { USB_DEVICE(VENDOR_SMK, 0x031d) }, + /* SMK eHome Infrared Transceiver (Sony VAIO) */ + { USB_DEVICE(VENDOR_SMK, 0x0322) }, + /* bundled with Hauppauge PVR-150 */ + { USB_DEVICE(VENDOR_SMK, 0x0334) }, + /* SMK eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_SMK, 0x0338) }, + /* Tatung eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TATUNG, 0x9150) }, + /* Shuttle eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) }, + /* Shuttle eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) }, + /* Gateway eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_GATEWAY, 0x3009) }, + /* Mitsumi */ + { USB_DEVICE(VENDOR_MITSUMI, 0x2501) }, + /* Topseed eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TOPSEED, 0x0001) }, + /* Topseed HP eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TOPSEED, 0x0006) }, + /* Topseed eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TOPSEED, 0x0007) }, + /* Topseed eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TOPSEED, 0x0008) }, + /* Topseed eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TOPSEED, 0x000a) }, + /* Topseed eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TOPSEED, 0x0011) }, + /* Ricavision internal Infrared Transceiver */ + { USB_DEVICE(VENDOR_RICAVISION, 0x0010) }, + /* Itron ione Libra Q-11 */ + { USB_DEVICE(VENDOR_ITRON, 0x7002) }, + /* FIC eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_FIC, 0x9242) }, + /* LG eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_LG, 0x9803) }, + /* Microsoft MCE Infrared Transceiver */ + { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) }, + /* Formosa eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_FORMOSA, 0xe015) }, + /* Formosa21 / eHome Infrared Receiver */ + { USB_DEVICE(VENDOR_FORMOSA, 0xe016) }, + /* Formosa aim / Trust MCE Infrared Receiver */ + { USB_DEVICE(VENDOR_FORMOSA, 0xe017) }, + /* Formosa Industrial Computing / Beanbag Emulation Device */ + { USB_DEVICE(VENDOR_FORMOSA, 0xe018) }, + /* Formosa21 / eHome Infrared Receiver */ + { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) }, + /* Formosa Industrial Computing AIM IR605/A */ + { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) }, + /* Fintek eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_FINTEK, 0x0602) }, + /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */ + { USB_DEVICE(VENDOR_FINTEK, 0x0702) }, + /* Pinnacle Remote Kit */ + { USB_DEVICE(VENDOR_PINNACLE, 0x0225) }, + /* Elitegroup Computer Systems IR */ + { USB_DEVICE(VENDOR_ECS, 0x0f38) }, + /* Wistron Corp. eHome Infrared Receiver */ + { USB_DEVICE(VENDOR_WISTRON, 0x0002) }, + /* Compro K100 */ + { USB_DEVICE(VENDOR_COMPRO, 0x3020) }, + /* Compro K100 v2 */ + { USB_DEVICE(VENDOR_COMPRO, 0x3082) }, + /* Northstar Systems, Inc. eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) }, + /* TiVo PC IR Receiver */ + { USB_DEVICE(VENDOR_TIVO, 0x2000) }, + /* Terminating entry */ + { } +}; + +static struct usb_device_id gen3_list[] = { + { USB_DEVICE(VENDOR_PINNACLE, 0x0225) }, + { USB_DEVICE(VENDOR_TOPSEED, 0x0008) }, + {} +}; + +static struct usb_device_id pinnacle_list[] = { + { USB_DEVICE(VENDOR_PINNACLE, 0x0225) }, + {} +}; + +static struct usb_device_id microsoft_gen1_list[] = { + { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) }, + {} +}; + +/* data structure for each usb transceiver */ +struct mceusb_dev { + /* ir-core bits */ + struct ir_input_dev *irdev; + struct ir_dev_props *props; + struct ir_input_state *state; + struct ir_raw_event rawir; + + /* core device bits */ + struct device *dev; + struct input_dev *idev; + + /* usb */ + struct usb_device *usbdev; + struct urb *urb_in; + struct usb_endpoint_descriptor *usb_ep_in; + struct usb_endpoint_descriptor *usb_ep_out; + + /* buffers and dma */ + unsigned char *buf_in; + unsigned int len_in; + u8 cmd; /* MCE command type */ + u8 rem; /* Remaining IR data bytes in packet */ + dma_addr_t dma_in; + dma_addr_t dma_out; + + struct { + u32 connected:1; + u32 def_xmit_mask_set:1; + u32 microsoft_gen1:1; + u32 gen3:1; + u32 reserved:28; + } flags; + + /* handle sending (init strings) */ + int send_flags; + int carrier; + + char name[128]; + char phys[64]; + + unsigned char def_xmit_mask; + unsigned char cur_xmit_mask; +}; + +/* + * MCE Device Command Strings + * Device command responses vary from device to device... + * - DEVICE_RESET resets the hardware to its default state + * - GET_REVISION fetches the hardware/software revision, common + * replies are ff 0b 45 ff 1b 08 and ff 0b 50 ff 1b 42 + * - GET_CARRIER_FREQ gets the carrier mode and frequency of the + * device, with replies in the form of 9f 06 MM FF, where MM is 0-3, + * meaning clk of 10000000, 2500000, 625000 or 156250, and FF is + * ((clk / frequency) - 1) + * - GET_RX_TIMEOUT fetches the receiver timeout in units of 50us, + * response in the form of 9f 0c msb lsb + * - GET_TX_BITMASK fetches the transmitter bitmask, replies in + * the form of 9f 08 bm, where bm is the bitmask + * - GET_RX_SENSOR fetches the RX sensor setting -- long-range + * general use one or short-range learning one, in the form of + * 9f 14 ss, where ss is either 01 for long-range or 02 for short + * - SET_CARRIER_FREQ sets a new carrier mode and frequency + * - SET_TX_BITMASK sets the transmitter bitmask + * - SET_RX_TIMEOUT sets the receiver timeout + * - SET_RX_SENSOR sets which receiver sensor to use + */ +static char DEVICE_RESET[] = {0x00, 0xff, 0xaa}; +static char GET_REVISION[] = {0xff, 0x0b}; +static char GET_UNKNOWN[] = {0xff, 0x18}; +static char GET_CARRIER_FREQ[] = {0x9f, 0x07}; +static char GET_RX_TIMEOUT[] = {0x9f, 0x0d}; +static char GET_TX_BITMASK[] = {0x9f, 0x13}; +static char GET_RX_SENSOR[] = {0x9f, 0x15}; +/* sub in desired values in lower byte or bytes for full command */ +static char SET_CARRIER_FREQ[] = {0x9f, 0x06, 0x00, 0x00}; +static char SET_TX_BITMASK[] = {0x9f, 0x08, 0x00}; +static char SET_RX_TIMEOUT[] = {0x9f, 0x0c, 0x00, 0x00}; +static char SET_RX_SENSOR[] = {0x9f, 0x14, 0x00}; + +static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf, + int len, bool out) +{ + char codes[USB_BUFLEN * 3 + 1]; + char inout[9]; + int i; + u8 cmd, subcmd, data1, data2; + struct device *dev = ir->dev; + + if (len <= 0) + return; + + if (ir->flags.microsoft_gen1 && len <= 2) + return; + + for (i = 0; i < len && i < USB_BUFLEN; i++) + snprintf(codes + i * 3, 4, "%02x ", buf[i] & 0xFF); + + dev_info(dev, "%sx data: %s (length=%d)\n", + (out ? "t" : "r"), codes, len); + + if (out) + strcpy(inout, "Request\0"); + else + strcpy(inout, "Got\0"); + + cmd = buf[0] & 0xff; + subcmd = buf[1] & 0xff; + data1 = buf[2] & 0xff; + data2 = buf[3] & 0xff; + + switch (cmd) { + case 0x00: + if (subcmd == 0xff && data1 == 0xaa) + dev_info(dev, "Device reset requested\n"); + else + dev_info(dev, "Unknown command 0x%02x 0x%02x\n", + cmd, subcmd); + break; + case 0xff: + switch (subcmd) { + case 0x0b: + if (len == 2) + dev_info(dev, "Get hw/sw rev?\n"); + else + dev_info(dev, "hw/sw rev 0x%02x 0x%02x " + "0x%02x 0x%02x\n", data1, data2, + buf[4], buf[5]); + break; + case 0xaa: + dev_info(dev, "Device reset requested\n"); + break; + case 0xfe: + dev_info(dev, "Previous command not supported\n"); + break; + case 0x18: + case 0x1b: + default: + dev_info(dev, "Unknown command 0x%02x 0x%02x\n", + cmd, subcmd); + break; + } + break; + case 0x9f: + switch (subcmd) { + case 0x03: + dev_info(dev, "Ping\n"); + break; + case 0x04: + dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n", + data1, data2); + break; + case 0x06: + dev_info(dev, "%s carrier mode and freq of " + "0x%02x 0x%02x\n", inout, data1, data2); + break; + case 0x07: + dev_info(dev, "Get carrier mode and freq\n"); + break; + case 0x08: + dev_info(dev, "%s transmit blaster mask of 0x%02x\n", + inout, data1); + break; + case 0x0c: + /* value is in units of 50us, so x*50/100 or x/2 ms */ + dev_info(dev, "%s receive timeout of %d ms\n", + inout, ((data1 << 8) | data2) / 2); + break; + case 0x0d: + dev_info(dev, "Get receive timeout\n"); + break; + case 0x13: + dev_info(dev, "Get transmit blaster mask\n"); + break; + case 0x14: + dev_info(dev, "%s %s-range receive sensor in use\n", + inout, data1 == 0x02 ? "short" : "long"); + break; + case 0x15: + if (len == 2) + dev_info(dev, "Get receive sensor\n"); + else + dev_info(dev, "Received pulse count is %d\n", + ((data1 << 8) | data2)); + break; + case 0xfe: + dev_info(dev, "Error! Hardware is likely wedged...\n"); + break; + case 0x05: + case 0x09: + case 0x0f: + default: + dev_info(dev, "Unknown command 0x%02x 0x%02x\n", + cmd, subcmd); + break; + } + break; + default: + break; + } +} + +static void usb_async_callback(struct urb *urb, struct pt_regs *regs) +{ + struct mceusb_dev *ir; + int len; + + if (!urb) + return; + + ir = urb->context; + if (ir) { + len = urb->actual_length; + + dev_dbg(ir->dev, "callback called (status=%d len=%d)\n", + urb->status, len); + + if (debug) + mceusb_dev_printdata(ir, urb->transfer_buffer, + len, true); + } + +} + +/* request incoming or send outgoing usb packet - used to initialize remote */ +static void mce_request_packet(struct mceusb_dev *ir, + struct usb_endpoint_descriptor *ep, + unsigned char *data, int size, int urb_type) +{ + int res; + struct urb *async_urb; + struct device *dev = ir->dev; + unsigned char *async_buf; + + if (urb_type == MCEUSB_TX) { + async_urb = usb_alloc_urb(0, GFP_KERNEL); + if (unlikely(!async_urb)) { + dev_err(dev, "Error, couldn't allocate urb!\n"); + return; + } + + async_buf = kzalloc(size, GFP_KERNEL); + if (!async_buf) { + dev_err(dev, "Error, couldn't allocate buf!\n"); + usb_free_urb(async_urb); + return; + } + + /* outbound data */ + usb_fill_int_urb(async_urb, ir->usbdev, + usb_sndintpipe(ir->usbdev, ep->bEndpointAddress), + async_buf, size, (usb_complete_t) usb_async_callback, + ir, ep->bInterval); + memcpy(async_buf, data, size); + + } else if (urb_type == MCEUSB_RX) { + /* standard request */ + async_urb = ir->urb_in; + ir->send_flags = RECV_FLAG_IN_PROGRESS; + + } else { + dev_err(dev, "Error! Unknown urb type %d\n", urb_type); + return; + } + + dev_dbg(dev, "receive request called (size=%#x)\n", size); + + async_urb->transfer_buffer_length = size; + async_urb->dev = ir->usbdev; + + res = usb_submit_urb(async_urb, GFP_ATOMIC); + if (res) { + dev_dbg(dev, "receive request FAILED! (res=%d)\n", res); + return; + } + dev_dbg(dev, "receive request complete (res=%d)\n", res); +} + +static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size) +{ + mce_request_packet(ir, ir->usb_ep_out, data, size, MCEUSB_TX); +} + +static void mce_sync_in(struct mceusb_dev *ir, unsigned char *data, int size) +{ + mce_request_packet(ir, ir->usb_ep_in, data, size, MCEUSB_RX); +} + +static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len) +{ + struct ir_raw_event rawir = { .pulse = false, .duration = 0 }; + int i, start_index = 0; + + /* skip meaningless 0xb1 0x60 header bytes on orig receiver */ + if (ir->flags.microsoft_gen1) + start_index = 2; + + for (i = start_index; i < buf_len;) { + if (ir->rem == 0) { + /* decode mce packets of the form (84),AA,BB,CC,DD */ + /* IR data packets can span USB messages - rem */ + ir->rem = (ir->buf_in[i] & MCE_PACKET_LENGTH_MASK); + ir->cmd = (ir->buf_in[i] & ~MCE_PACKET_LENGTH_MASK); + dev_dbg(ir->dev, "New data. rem: 0x%02x, cmd: 0x%02x\n", + ir->rem, ir->cmd); + i++; + } + + /* Only cmd 0x8 is IR data, don't process MCE commands */ + if (ir->cmd != 0x80) { + ir->rem = 0; + return; + } + + for (; (ir->rem > 0) && (i < buf_len); i++) { + ir->rem--; + + rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0); + rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK) + * MCE_TIME_UNIT * 1000; + + if ((ir->buf_in[i] & MCE_PULSE_MASK) == 0x7f) { + if (ir->rawir.pulse == rawir.pulse) + ir->rawir.duration += rawir.duration; + else { + ir->rawir.duration = rawir.duration; + ir->rawir.pulse = rawir.pulse; + } + continue; + } + rawir.duration += ir->rawir.duration; + ir->rawir.duration = 0; + ir->rawir.pulse = rawir.pulse; + + dev_dbg(ir->dev, "Storing %s with duration %d\n", + rawir.pulse ? "pulse" : "space", + rawir.duration); + + ir_raw_event_store(ir->idev, &rawir); + } + + if (ir->buf_in[i] == 0x80 || ir->buf_in[i] == 0x9f) { + dev_dbg(ir->dev, "calling ir_raw_event_handle\n"); + ir->rem = 0; + ir_raw_event_handle(ir->idev); + } + } +} + +static void mceusb_set_default_xmit_mask(struct urb *urb) +{ + struct mceusb_dev *ir = urb->context; + char *buffer = urb->transfer_buffer; + u8 cmd, subcmd, def_xmit_mask; + + cmd = buffer[0] & 0xff; + subcmd = buffer[1] & 0xff; + + if (cmd == 0x9f && subcmd == 0x08) { + def_xmit_mask = buffer[2] & 0xff; + dev_dbg(ir->dev, "%s: setting xmit mask to 0x%02x\n", + __func__, def_xmit_mask); + ir->def_xmit_mask = def_xmit_mask; + ir->flags.def_xmit_mask_set = 1; + } +} + +static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs) +{ + struct mceusb_dev *ir; + int buf_len; + + if (!urb) + return; + + ir = urb->context; + if (!ir) { + usb_unlink_urb(urb); + return; + } + + buf_len = urb->actual_length; + + if (!ir->flags.def_xmit_mask_set) + mceusb_set_default_xmit_mask(urb); + + if (debug) + mceusb_dev_printdata(ir, urb->transfer_buffer, buf_len, false); + + if (ir->send_flags == RECV_FLAG_IN_PROGRESS) { + ir->send_flags = SEND_FLAG_COMPLETE; + dev_dbg(&ir->irdev->dev, "setup answer received %d bytes\n", + buf_len); + } + + switch (urb->status) { + /* success */ + case 0: + mceusb_process_ir_data(ir, buf_len); + break; + + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + usb_unlink_urb(urb); + return; + + case -EPIPE: + default: + break; + } + + usb_submit_urb(urb, GFP_ATOMIC); +} + +static void mceusb_gen1_init(struct mceusb_dev *ir) +{ + int i, ret; + char junk[64], data[8]; + int partial = 0; + struct device *dev = ir->dev; + + /* + * Clear off the first few messages. These look like calibration + * or test data, I can't really tell. This also flushes in case + * we have random ir data queued up. + */ + for (i = 0; i < 40; i++) + usb_bulk_msg(ir->usbdev, + usb_rcvbulkpipe(ir->usbdev, + ir->usb_ep_in->bEndpointAddress), + junk, 64, &partial, HZ * 10); + + memset(data, 0, 8); + + /* Get Status */ + ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0), + USB_REQ_GET_STATUS, USB_DIR_IN, + 0, 0, data, 2, HZ * 3); + + /* ret = usb_get_status( ir->usbdev, 0, 0, data ); */ + dev_dbg(dev, "%s - ret = %d status = 0x%x 0x%x\n", __func__, + ret, data[0], data[1]); + + /* + * This is a strange one. They issue a set address to the device + * on the receive control pipe and expect a certain value pair back + */ + memset(data, 0, 8); + + ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0), + USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0, + data, 2, HZ * 3); + dev_dbg(dev, "%s - ret = %d\n", __func__, ret); + dev_dbg(dev, "%s - data[0] = %d, data[1] = %d\n", + __func__, data[0], data[1]); + + /* set feature: bit rate 38400 bps */ + ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), + USB_REQ_SET_FEATURE, USB_TYPE_VENDOR, + 0xc04e, 0x0000, NULL, 0, HZ * 3); + + dev_dbg(dev, "%s - ret = %d\n", __func__, ret); + + /* bRequest 4: set char length to 8 bits */ + ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), + 4, USB_TYPE_VENDOR, + 0x0808, 0x0000, NULL, 0, HZ * 3); + dev_dbg(dev, "%s - retB = %d\n", __func__, ret); + + /* bRequest 2: set handshaking to use DTR/DSR */ + ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), + 2, USB_TYPE_VENDOR, + 0x0000, 0x0100, NULL, 0, HZ * 3); + dev_dbg(dev, "%s - retC = %d\n", __func__, ret); +}; + +static void mceusb_gen2_init(struct mceusb_dev *ir) +{ + int maxp = ir->len_in; + + mce_sync_in(ir, NULL, maxp); + mce_sync_in(ir, NULL, maxp); + + /* device reset */ + mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET)); + mce_sync_in(ir, NULL, maxp); + + /* get hw/sw revision? */ + mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION)); + mce_sync_in(ir, NULL, maxp); + + /* unknown what this actually returns... */ + mce_async_out(ir, GET_UNKNOWN, sizeof(GET_UNKNOWN)); + mce_sync_in(ir, NULL, maxp); +} + +static void mceusb_gen3_init(struct mceusb_dev *ir) +{ + int maxp = ir->len_in; + + mce_sync_in(ir, NULL, maxp); + + /* device reset */ + mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET)); + mce_sync_in(ir, NULL, maxp); + + /* get the carrier and frequency */ + mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ)); + mce_sync_in(ir, NULL, maxp); + + /* get the transmitter bitmask */ + mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK)); + mce_sync_in(ir, NULL, maxp); + + /* get receiver timeout value */ + mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT)); + mce_sync_in(ir, NULL, maxp); + + /* get receiver sensor setting */ + mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR)); + mce_sync_in(ir, NULL, maxp); +} + +static struct input_dev *mceusb_init_input_dev(struct mceusb_dev *ir) +{ + struct input_dev *idev; + struct ir_dev_props *props; + struct ir_input_dev *irdev; + struct ir_input_state *state; + struct device *dev = ir->dev; + int ret = -ENODEV; + + idev = input_allocate_device(); + if (!idev) { + dev_err(dev, "remote input dev allocation failed\n"); + goto idev_alloc_failed; + } + + ret = -ENOMEM; + 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; + } + + irdev = kzalloc(sizeof(struct ir_input_dev), GFP_KERNEL); + if (!irdev) { + dev_err(dev, "remote ir input dev allocation failed\n"); + goto ir_dev_alloc_failed; + } + + state = kzalloc(sizeof(struct ir_input_state), GFP_KERNEL); + if (!state) { + dev_err(dev, "remote ir state allocation failed\n"); + goto ir_state_alloc_failed; + } + + snprintf(ir->name, sizeof(ir->name), "Media Center Edition eHome " + "Infrared Remote Transceiver (%04x:%04x)", + le16_to_cpu(ir->usbdev->descriptor.idVendor), + le16_to_cpu(ir->usbdev->descriptor.idProduct)); + + ret = ir_input_init(idev, state, IR_TYPE_RC6); + if (ret < 0) + goto irdev_failed; + + idev->name = ir->name; + + usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys)); + strlcat(ir->phys, "/input0", sizeof(ir->phys)); + idev->phys = ir->phys; + + /* FIXME: no EV_REP (yet), we may need our own auto-repeat handling */ + idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); + + idev->keybit[BIT_WORD(BTN_MOUSE)] = + BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); + idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) | + BIT_MASK(REL_WHEEL); + + props->priv = ir; + props->driver_type = RC_DRIVER_IR_RAW; + props->allowed_protos = IR_TYPE_ALL; + + ir->props = props; + ir->irdev = irdev; + ir->state = state; + + input_set_drvdata(idev, irdev); + + ret = ir_input_register(idev, RC_MAP_RC6_MCE, props, DRIVER_NAME); + if (ret < 0) { + dev_err(dev, "remote input device register failed\n"); + goto irdev_failed; + } + + return idev; + +irdev_failed: + kfree(state); +ir_state_alloc_failed: + kfree(irdev); +ir_dev_alloc_failed: + kfree(props); +props_alloc_failed: + input_free_device(idev); +idev_alloc_failed: + return NULL; +} + +static int __devinit mceusb_dev_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_device *dev = interface_to_usbdev(intf); + struct usb_host_interface *idesc; + struct usb_endpoint_descriptor *ep = NULL; + struct usb_endpoint_descriptor *ep_in = NULL; + struct usb_endpoint_descriptor *ep_out = NULL; + struct usb_host_config *config; + struct mceusb_dev *ir = NULL; + int pipe, maxp; + int i, ret; + char buf[63], name[128] = ""; + bool is_gen3; + bool is_microsoft_gen1; + bool is_pinnacle; + + dev_dbg(&intf->dev, ": %s called\n", __func__); + + usb_reset_device(dev); + + config = dev->actconfig; + idesc = intf->cur_altsetting; + + is_gen3 = usb_match_id(intf, gen3_list) ? 1 : 0; + is_microsoft_gen1 = usb_match_id(intf, microsoft_gen1_list) ? 1 : 0; + is_pinnacle = usb_match_id(intf, pinnacle_list) ? 1 : 0; + + /* step through the endpoints to find first bulk in and out endpoint */ + for (i = 0; i < idesc->desc.bNumEndpoints; ++i) { + ep = &idesc->endpoint[i].desc; + + if ((ep_in == NULL) + && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) + == USB_DIR_IN) + && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) + == USB_ENDPOINT_XFER_BULK) + || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) + == USB_ENDPOINT_XFER_INT))) { + + dev_dbg(&intf->dev, ": acceptable inbound endpoint " + "found\n"); + ep_in = ep; + ep_in->bmAttributes = USB_ENDPOINT_XFER_INT; + if (!is_pinnacle) + /* + * Ideally, we'd use what the device offers up, + * but that leads to non-functioning first and + * second-gen devices, and many devices have an + * invalid bInterval of 0. Pinnacle devices + * don't work witha bInterval of 1 though. + */ + ep_in->bInterval = 1; + } + + if ((ep_out == NULL) + && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) + == USB_DIR_OUT) + && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) + == USB_ENDPOINT_XFER_BULK) + || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) + == USB_ENDPOINT_XFER_INT))) { + + dev_dbg(&intf->dev, ": acceptable outbound endpoint " + "found\n"); + ep_out = ep; + ep_out->bmAttributes = USB_ENDPOINT_XFER_INT; + if (!is_pinnacle) + /* + * Ideally, we'd use what the device offers up, + * but that leads to non-functioning first and + * second-gen devices, and many devices have an + * invalid bInterval of 0. Pinnacle devices + * don't work witha bInterval of 1 though. + */ + ep_out->bInterval = 1; + } + } + if (ep_in == NULL) { + dev_dbg(&intf->dev, ": inbound and/or endpoint not found\n"); + return -ENODEV; + } + + pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress); + maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); + + ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL); + if (!ir) + goto mem_alloc_fail; + + ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in); + if (!ir->buf_in) + goto buf_in_alloc_fail; + + ir->urb_in = usb_alloc_urb(0, GFP_KERNEL); + if (!ir->urb_in) + goto urb_in_alloc_fail; + + ir->usbdev = dev; + ir->dev = &intf->dev; + ir->len_in = maxp; + ir->flags.gen3 = is_gen3; + ir->flags.microsoft_gen1 = is_microsoft_gen1; + + /* Saving usb interface data for use by the transmitter routine */ + ir->usb_ep_in = ep_in; + ir->usb_ep_out = ep_out; + + if (dev->descriptor.iManufacturer + && usb_string(dev, dev->descriptor.iManufacturer, + buf, sizeof(buf)) > 0) + strlcpy(name, buf, sizeof(name)); + if (dev->descriptor.iProduct + && usb_string(dev, dev->descriptor.iProduct, + buf, sizeof(buf)) > 0) + snprintf(name + strlen(name), sizeof(name) - strlen(name), + " %s", buf); + + ir->idev = mceusb_init_input_dev(ir); + if (!ir->idev) + goto input_dev_fail; + + /* inbound data */ + usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, + maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval); + ir->urb_in->transfer_dma = ir->dma_in; + ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + + if (is_pinnacle) { + /* + * I have no idea why but this reset seems to be crucial to + * getting the device to do outbound IO correctly - without + * this the device seems to hang, ignoring all input - although + * IR signals are correctly sent from the device, no input is + * interpreted by the device and the host never does the + * completion routine + */ + ret = usb_reset_configuration(dev); + dev_info(&intf->dev, "usb reset config ret %x\n", ret); + } + + /* initialize device */ + if (ir->flags.gen3) + mceusb_gen3_init(ir); + + else if (ir->flags.microsoft_gen1) + mceusb_gen1_init(ir); + + else + mceusb_gen2_init(ir); + + mce_sync_in(ir, NULL, maxp); + + /* We've already done this on gen3 devices */ + if (!ir->flags.def_xmit_mask_set) { + mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK)); + mce_sync_in(ir, NULL, maxp); + } + + usb_set_intfdata(intf, ir); + + dev_info(&intf->dev, "Registered %s on usb%d:%d\n", name, + dev->bus->busnum, dev->devnum); + + return 0; + + /* Error-handling path */ +input_dev_fail: + usb_free_urb(ir->urb_in); +urb_in_alloc_fail: + usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in); +buf_in_alloc_fail: + kfree(ir); +mem_alloc_fail: + dev_err(&intf->dev, "%s: device setup failed!\n", __func__); + + return -ENOMEM; +} + + +static void __devexit mceusb_dev_disconnect(struct usb_interface *intf) +{ + struct usb_device *dev = interface_to_usbdev(intf); + struct mceusb_dev *ir = usb_get_intfdata(intf); + + usb_set_intfdata(intf, NULL); + + if (!ir) + return; + + ir->usbdev = NULL; + input_unregister_device(ir->idev); + usb_kill_urb(ir->urb_in); + usb_free_urb(ir->urb_in); + usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in); + + kfree(ir); +} + +static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct mceusb_dev *ir = usb_get_intfdata(intf); + dev_info(ir->dev, "suspend\n"); + usb_kill_urb(ir->urb_in); + return 0; +} + +static int mceusb_dev_resume(struct usb_interface *intf) +{ + struct mceusb_dev *ir = usb_get_intfdata(intf); + dev_info(ir->dev, "resume\n"); + if (usb_submit_urb(ir->urb_in, GFP_ATOMIC)) + return -EIO; + return 0; +} + +static struct usb_driver mceusb_dev_driver = { + .name = DRIVER_NAME, + .probe = mceusb_dev_probe, + .disconnect = mceusb_dev_disconnect, + .suspend = mceusb_dev_suspend, + .resume = mceusb_dev_resume, + .reset_resume = mceusb_dev_resume, + .id_table = mceusb_dev_table +}; + +static int __init mceusb_dev_init(void) +{ + int ret; + + ret = usb_register(&mceusb_dev_driver); + if (ret < 0) + printk(KERN_ERR DRIVER_NAME + ": usb register failed, result = %d\n", ret); + + return ret; +} + +static void __exit mceusb_dev_exit(void) +{ + usb_deregister(&mceusb_dev_driver); +} + +module_init(mceusb_dev_init); +module_exit(mceusb_dev_exit); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(usb, mceusb_dev_table); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug enabled or not");