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Diffstat (limited to 'drivers/media/rc/mceusb.c')
| -rw-r--r-- | drivers/media/rc/mceusb.c | 1333 |
1 files changed, 1333 insertions, 0 deletions
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c new file mode 100644 index 00000000000..392ca24132d --- /dev/null +++ b/drivers/media/rc/mceusb.c @@ -0,0 +1,1333 @@ +/* + * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers + * + * Copyright (c) 2010 by Jarod Wilson <jarod@redhat.com> + * + * 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. + * + * + * 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 <linux/device.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/usb.h> +#include <linux/usb/input.h> +#include <media/ir-core.h> + +#define DRIVER_VERSION "1.91" +#define DRIVER_AUTHOR "Jarod Wilson <jarod@wilsonet.com>" +#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 USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */ +#define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */ +#define MS_TO_NS(msec) ((msec) * 1000) + +/* 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_IRDATA_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */ +#define MCE_IRDATA_TRAILER 0x80 /* End of IR data */ +#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 /* Vals: 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_HW_CMD_HEADER 0xff /* MCE hardware command header */ +#define MCE_COMMAND_HEADER 0x9f /* MCE command header */ +#define MCE_COMMAND_MASK 0xe0 /* Mask out command bits */ +#define MCE_COMMAND_NULL 0x00 /* These show up various places... */ +/* if buf[i] & MCE_COMMAND_MASK == 0x80 and buf[i] != MCE_COMMAND_HEADER, + * then we're looking at a raw IR data sample */ +#define MCE_COMMAND_IRDATA 0x80 +#define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */ + +/* Sub-commands, which follow MCE_COMMAND_HEADER or MCE_HW_CMD_HEADER */ +#define MCE_CMD_SIG_END 0x01 /* End of signal */ +#define MCE_CMD_PING 0x03 /* Ping device */ +#define MCE_CMD_UNKNOWN 0x04 /* Unknown */ +#define MCE_CMD_UNKNOWN2 0x05 /* Unknown */ +#define MCE_CMD_S_CARRIER 0x06 /* Set TX carrier frequency */ +#define MCE_CMD_G_CARRIER 0x07 /* Get TX carrier frequency */ +#define MCE_CMD_S_TXMASK 0x08 /* Set TX port bitmask */ +#define MCE_CMD_UNKNOWN3 0x09 /* Unknown */ +#define MCE_CMD_UNKNOWN4 0x0a /* Unknown */ +#define MCE_CMD_G_REVISION 0x0b /* Get hw/sw revision */ +#define MCE_CMD_S_TIMEOUT 0x0c /* Set RX timeout value */ +#define MCE_CMD_G_TIMEOUT 0x0d /* Get RX timeout value */ +#define MCE_CMD_UNKNOWN5 0x0e /* Unknown */ +#define MCE_CMD_UNKNOWN6 0x0f /* Unknown */ +#define MCE_CMD_G_RXPORTSTS 0x11 /* Get RX port status */ +#define MCE_CMD_G_TXMASK 0x13 /* Set TX port bitmask */ +#define MCE_CMD_S_RXSENSOR 0x14 /* Set RX sensor (std/learning) */ +#define MCE_CMD_G_RXSENSOR 0x15 /* Get RX sensor (std/learning) */ +#define MCE_RSP_PULSE_COUNT 0x15 /* RX pulse count (only if learning) */ +#define MCE_CMD_TX_PORTS 0x16 /* Get number of TX ports */ +#define MCE_CMD_G_WAKESRC 0x17 /* Get wake source */ +#define MCE_CMD_UNKNOWN7 0x18 /* Unknown */ +#define MCE_CMD_UNKNOWN8 0x19 /* Unknown */ +#define MCE_CMD_UNKNOWN9 0x1b /* Unknown */ +#define MCE_CMD_DEVICE_RESET 0xaa /* Reset the hardware */ +#define MCE_RSP_CMD_INVALID 0xfe /* Invalid command issued */ + + +/* 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 +#define VENDOR_CONEXANT 0x0572 + +enum mceusb_model_type { + MCE_GEN2 = 0, /* Most boards */ + MCE_GEN1, + MCE_GEN3, + MCE_GEN2_TX_INV, + POLARIS_EVK, + CX_HYBRID_TV, +}; + +struct mceusb_model { + u32 mce_gen1:1; + u32 mce_gen2:1; + u32 mce_gen3:1; + u32 tx_mask_normal:1; + u32 is_polaris:1; + u32 no_tx:1; + + const char *rc_map; /* Allow specify a per-board map */ + const char *name; /* per-board name */ +}; + +static const struct mceusb_model mceusb_model[] = { + [MCE_GEN1] = { + .mce_gen1 = 1, + .tx_mask_normal = 1, + }, + [MCE_GEN2] = { + .mce_gen2 = 1, + }, + [MCE_GEN2_TX_INV] = { + .mce_gen2 = 1, + .tx_mask_normal = 1, + }, + [MCE_GEN3] = { + .mce_gen3 = 1, + .tx_mask_normal = 1, + }, + [POLARIS_EVK] = { + .is_polaris = 1, + /* + * In fact, the EVK is shipped without + * remotes, but we should have something handy, + * to allow testing it + */ + .rc_map = RC_MAP_RC5_HAUPPAUGE_NEW, + .name = "Conexant Hybrid TV (cx231xx) MCE IR", + }, + [CX_HYBRID_TV] = { + .is_polaris = 1, + .no_tx = 1, /* tx isn't wired up at all */ + .name = "Conexant Hybrid TV (cx231xx) MCE IR", + }, +}; + +static struct usb_device_id mceusb_dev_table[] = { + /* Original Microsoft MCE IR Transceiver (often HP-branded) */ + { USB_DEVICE(VENDOR_MICROSOFT, 0x006d), + .driver_info = MCE_GEN1 }, + /* Philips Infrared Transceiver - Sahara branded */ + { USB_DEVICE(VENDOR_PHILIPS, 0x0608) }, + /* Philips Infrared Transceiver - HP branded */ + { USB_DEVICE(VENDOR_PHILIPS, 0x060c), + .driver_info = MCE_GEN2_TX_INV }, + /* 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) }, + /* Philips/Spinel plus IR transceiver for ASUS */ + { USB_DEVICE(VENDOR_PHILIPS, 0x206c) }, + /* Philips/Spinel plus IR transceiver for ASUS */ + { USB_DEVICE(VENDOR_PHILIPS, 0x2088) }, + /* Realtek MCE IR Receiver */ + { USB_DEVICE(VENDOR_REALTEK, 0x0161) }, + /* SMK/Toshiba G83C0004D410 */ + { USB_DEVICE(VENDOR_SMK, 0x031d), + .driver_info = MCE_GEN2_TX_INV }, + /* SMK eHome Infrared Transceiver (Sony VAIO) */ + { USB_DEVICE(VENDOR_SMK, 0x0322), + .driver_info = MCE_GEN2_TX_INV }, + /* bundled with Hauppauge PVR-150 */ + { USB_DEVICE(VENDOR_SMK, 0x0334), + .driver_info = MCE_GEN2_TX_INV }, + /* 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), + .driver_info = MCE_GEN2_TX_INV }, + /* Topseed HP eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TOPSEED, 0x0006), + .driver_info = MCE_GEN2_TX_INV }, + /* Topseed eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TOPSEED, 0x0007), + .driver_info = MCE_GEN2_TX_INV }, + /* Topseed eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TOPSEED, 0x0008), + .driver_info = MCE_GEN3 }, + /* Topseed eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TOPSEED, 0x000a), + .driver_info = MCE_GEN2_TX_INV }, + /* Topseed eHome Infrared Transceiver */ + { USB_DEVICE(VENDOR_TOPSEED, 0x0011), + .driver_info = MCE_GEN2_TX_INV }, + /* 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) }, + /* Formosa Industrial Computing */ + { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) }, + /* Fintek eHome Infrared Transceiver (HP branded) */ + { USB_DEVICE(VENDOR_FINTEK, 0x5168) }, + /* 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), + .driver_info = MCE_GEN3 }, + /* 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) }, + /* Conexant Hybrid TV "Shelby" Polaris SDK */ + { USB_DEVICE(VENDOR_CONEXANT, 0x58a1), + .driver_info = POLARIS_EVK }, + /* Conexant Hybrid TV RDU253S Polaris */ + { USB_DEVICE(VENDOR_CONEXANT, 0x58a5), + .driver_info = CX_HYBRID_TV }, + /* Terminating entry */ + { } +}; + +/* data structure for each usb transceiver */ +struct mceusb_dev { + /* ir-core bits */ + struct ir_dev_props *props; + + /* optional features we can enable */ + bool carrier_report_enabled; + bool learning_enabled; + + /* 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; + dma_addr_t dma_in; + dma_addr_t dma_out; + + enum { + CMD_HEADER = 0, + SUBCMD, + CMD_DATA, + PARSE_IRDATA, + } parser_state; + + u8 cmd, rem; /* Remaining IR data bytes in packet */ + + struct { + u32 connected:1; + u32 tx_mask_normal:1; + u32 microsoft_gen1:1; + u32 no_tx:1; + } flags; + + /* transmit support */ + int send_flags; + u32 carrier; + unsigned char tx_mask; + + char name[128]; + char phys[64]; + enum mceusb_model_type model; +}; + +/* + * 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[] = {MCE_COMMAND_NULL, MCE_HW_CMD_HEADER, + MCE_CMD_DEVICE_RESET}; +static char GET_REVISION[] = {MCE_HW_CMD_HEADER, MCE_CMD_G_REVISION}; +static char GET_UNKNOWN[] = {MCE_HW_CMD_HEADER, MCE_CMD_UNKNOWN7}; +static char GET_UNKNOWN2[] = {MCE_COMMAND_HEADER, MCE_CMD_UNKNOWN2}; +static char GET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER, MCE_CMD_G_CARRIER}; +static char GET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TIMEOUT}; +static char GET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_G_TXMASK}; +static char GET_RX_SENSOR[] = {MCE_COMMAND_HEADER, MCE_CMD_G_RXSENSOR}; +/* sub in desired values in lower byte or bytes for full command */ +/* FIXME: make use of these for transmit. +static char SET_CARRIER_FREQ[] = {MCE_COMMAND_HEADER, + MCE_CMD_S_CARRIER, 0x00, 0x00}; +static char SET_TX_BITMASK[] = {MCE_COMMAND_HEADER, MCE_CMD_S_TXMASK, 0x00}; +static char SET_RX_TIMEOUT[] = {MCE_COMMAND_HEADER, + MCE_CMD_S_TIMEOUT, 0x00, 0x00}; +static char SET_RX_SENSOR[] = {MCE_COMMAND_HEADER, + MCE_CMD_S_RXSENSOR, 0x00}; +*/ + +static int mceusb_cmdsize(u8 cmd, u8 subcmd) +{ + int datasize = 0; + + switch (cmd) { + case MCE_COMMAND_NULL: + if (subcmd == MCE_HW_CMD_HEADER) + datasize = 1; + break; + case MCE_HW_CMD_HEADER: + switch (subcmd) { + case MCE_CMD_G_REVISION: + datasize = 2; + break; + } + case MCE_COMMAND_HEADER: + switch (subcmd) { + case MCE_CMD_UNKNOWN: + case MCE_CMD_S_CARRIER: + case MCE_CMD_S_TIMEOUT: + case MCE_RSP_PULSE_COUNT: + datasize = 2; + break; + case MCE_CMD_SIG_END: + case MCE_CMD_S_TXMASK: + case MCE_CMD_S_RXSENSOR: + datasize = 1; + break; + } + } + return datasize; +} + +static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf, + int offset, int len, bool out) +{ + char codes[USB_BUFLEN * 3 + 1]; + char inout[9]; + u8 cmd, subcmd, data1, data2; + struct device *dev = ir->dev; + int i, start, skip = 0; + + if (!debug) + return; + + /* skip meaningless 0xb1 0x60 header bytes on orig receiver */ + if (ir->flags.microsoft_gen1 && !out && !offset) + skip = 2; + + if (len <= skip) + return; + + for (i = 0; i < len && i < USB_BUFLEN; i++) + snprintf(codes + i * 3, 4, "%02x ", buf[i + offset] & 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"); + + start = offset + skip; + cmd = buf[start] & 0xff; + subcmd = buf[start + 1] & 0xff; + data1 = buf[start + 2] & 0xff; + data2 = buf[start + 3] & 0xff; + + switch (cmd) { + case MCE_COMMAND_NULL: + if ((subcmd == MCE_HW_CMD_HEADER) && + (data1 == MCE_CMD_DEVICE_RESET)) + dev_info(dev, "Device reset requested\n"); + else + dev_info(dev, "Unknown command 0x%02x 0x%02x\n", + cmd, subcmd); + break; + case MCE_HW_CMD_HEADER: + switch (subcmd) { + case MCE_CMD_G_REVISION: + 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[start + 4], buf[start + 5]); + break; + case MCE_CMD_DEVICE_RESET: + dev_info(dev, "Device reset requested\n"); + break; + case MCE_RSP_CMD_INVALID: + dev_info(dev, "Previous command not supported\n"); + break; + case MCE_CMD_UNKNOWN7: + case MCE_CMD_UNKNOWN9: + default: + dev_info(dev, "Unknown command 0x%02x 0x%02x\n", + cmd, subcmd); + break; + } + break; + case MCE_COMMAND_HEADER: + switch (subcmd) { + case MCE_CMD_SIG_END: + dev_info(dev, "End of signal\n"); + break; + case MCE_CMD_PING: + dev_info(dev, "Ping\n"); + break; + case MCE_CMD_UNKNOWN: + dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n", + data1, data2); + break; + case MCE_CMD_S_CARRIER: + dev_info(dev, "%s carrier mode and freq of " + "0x%02x 0x%02x\n", inout, data1, data2); + break; + case MCE_CMD_G_CARRIER: + dev_info(dev, "Get carrier mode and freq\n"); + break; + case MCE_CMD_S_TXMASK: + dev_info(dev, "%s transmit blaster mask of 0x%02x\n", + inout, data1); + break; + case MCE_CMD_S_TIMEOUT: + /* 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 MCE_CMD_G_TIMEOUT: + dev_info(dev, "Get receive timeout\n"); + break; + case MCE_CMD_G_TXMASK: + dev_info(dev, "Get transmit blaster mask\n"); + break; + case MCE_CMD_S_RXSENSOR: + dev_info(dev, "%s %s-range receive sensor in use\n", + inout, data1 == 0x02 ? "short" : "long"); + break; + case MCE_CMD_G_RXSENSOR: + /* aka MCE_RSP_PULSE_COUNT */ + if (out) + dev_info(dev, "Get receive sensor\n"); + else if (ir->learning_enabled) + dev_info(dev, "RX pulse count: %d\n", + ((data1 << 8) | data2)); + break; + case MCE_RSP_CMD_INVALID: + dev_info(dev, "Error! Hardware is likely wedged...\n"); + break; + case MCE_CMD_UNKNOWN2: + case MCE_CMD_UNKNOWN3: + case MCE_CMD_UNKNOWN5: + default: + dev_info(dev, "Unknown command 0x%02x 0x%02x\n", + cmd, subcmd); + break; + } + break; + default: + break; + } + + if (cmd == MCE_IRDATA_TRAILER) + dev_info(dev, "End of raw IR data\n"); + else if ((cmd != MCE_COMMAND_HEADER) && + ((cmd & MCE_COMMAND_MASK) == MCE_COMMAND_IRDATA)) + dev_info(dev, "Raw IR data, %d pulse/space samples\n", ir->rem); +} + +static void mce_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); + + mceusb_dev_printdata(ir, urb->transfer_buffer, 0, 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)mce_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); +} + +/* Send data out the IR blaster port(s) */ +static int mceusb_tx_ir(void *priv, int *txbuf, u32 n) +{ + struct mceusb_dev *ir = priv; + int i, ret = 0; + int count, cmdcount = 0; + unsigned char *cmdbuf; /* MCE command buffer */ + long signal_duration = 0; /* Singnal length in us */ + struct timeval start_time, end_time; + + do_gettimeofday(&start_time); + + count = n / sizeof(int); + + cmdbuf = kzalloc(sizeof(int) * MCE_CMDBUF_SIZE, GFP_KERNEL); + if (!cmdbuf) + return -ENOMEM; + + /* MCE tx init header */ + cmdbuf[cmdcount++] = MCE_COMMAND_HEADER; + cmdbuf[cmdcount++] = MCE_CMD_S_TXMASK; + cmdbuf[cmdcount++] = ir->tx_mask; + + /* Generate mce packet data */ + for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) { + signal_duration += txbuf[i]; + txbuf[i] = txbuf[i] / MCE_TIME_UNIT; + + do { /* loop to support long pulses/spaces > 127*50us=6.35ms */ + + /* Insert mce packet header every 4th entry */ + if ((cmdcount < MCE_CMDBUF_SIZE) && + (cmdcount - MCE_TX_HEADER_LENGTH) % + MCE_CODE_LENGTH == 0) + cmdbuf[cmdcount++] = MCE_IRDATA_HEADER; + + /* Insert mce packet data */ + if (cmdcount < MCE_CMDBUF_SIZE) + cmdbuf[cmdcount++] = + (txbuf[i] < MCE_PULSE_BIT ? + txbuf[i] : MCE_MAX_PULSE_LENGTH) | + (i & 1 ? 0x00 : MCE_PULSE_BIT); + else { + ret = -EINVAL; + goto out; + } + + } while ((txbuf[i] > MCE_MAX_PULSE_LENGTH) && + (txbuf[i] -= MCE_MAX_PULSE_LENGTH)); + } + + /* Fix packet length in last header */ + cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] = + MCE_COMMAND_IRDATA + (cmdcount - MCE_TX_HEADER_LENGTH) % + MCE_CODE_LENGTH - 1; + + /* Check if we have room for the empty packet at the end */ + if (cmdcount >= MCE_CMDBUF_SIZE) { + ret = -EINVAL; + goto out; + } + + /* All mce commands end with an empty packet (0x80) */ + cmdbuf[cmdcount++] = MCE_IRDATA_TRAILER; + + /* Transmit the command to the mce device */ + mce_async_out(ir, cmdbuf, cmdcount); + + /* + * The lircd gap calculation expects the write function to + * wait the time it takes for the ircommand to be sent before + * it returns. + */ + do_gettimeofday(&end_time); + signal_duration -= (end_time.tv_usec - start_time.tv_usec) + + (end_time.tv_sec - start_time.tv_sec) * 1000000; + + /* delay with the closest number of ticks */ + set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(usecs_to_jiffies(signal_duration)); + +out: + kfree(cmdbuf); + return ret ? ret : n; +} + +/* Sets active IR outputs -- mce devices typically have two */ +static int mceusb_set_tx_mask(void *priv, u32 mask) +{ + struct mceusb_dev *ir = priv; + + if (ir->flags.tx_mask_normal) + ir->tx_mask = mask; + else + ir->tx_mask = (mask != MCE_DEFAULT_TX_MASK ? + mask ^ MCE_DEFAULT_TX_MASK : mask) << 1; + + return 0; +} + +/* Sets the send carrier frequency and mode */ +static int mceusb_set_tx_carrier(void *priv, u32 carrier) +{ + struct mceusb_dev *ir = priv; + int clk = 10000000; + int prescaler = 0, divisor = 0; + unsigned char cmdbuf[4] = { MCE_COMMAND_HEADER, + MCE_CMD_S_CARRIER, 0x00, 0x00 }; + + /* Carrier has changed */ + if (ir->carrier != carrier) { + + if (carrier == 0) { + ir->carrier = carrier; + cmdbuf[2] = MCE_CMD_SIG_END; + cmdbuf[3] = MCE_IRDATA_TRAILER; + dev_dbg(ir->dev, "%s: disabling carrier " + "modulation\n", __func__); + mce_async_out(ir, cmdbuf, sizeof(cmdbuf)); + return carrier; + } + + for (prescaler = 0; prescaler < 4; ++prescaler) { + divisor = (clk >> (2 * prescaler)) / carrier; + if (divisor <= 0xff) { + ir->carrier = carrier; + cmdbuf[2] = prescaler; + cmdbuf[3] = divisor; + dev_dbg(ir->dev, "%s: requesting %u HZ " + "carrier\n", __func__, carrier); + + /* Transmit new carrier to mce device */ + mce_async_out(ir, cmdbuf, sizeof(cmdbuf)); + return carrier; + } + } + + return -EINVAL; + + } + + return carrier; +} + +/* + * We don't do anything but print debug spew for many of the command bits + * we receive from the hardware, but some of them are useful information + * we want to store so that we can use them. + */ +static void mceusb_handle_command(struct mceusb_dev *ir, int index) +{ + u8 hi = ir->buf_in[index + 1] & 0xff; + u8 lo = ir->buf_in[index + 2] & 0xff; + + switch (ir->buf_in[index]) { + /* 2-byte return value commands */ + case MCE_CMD_S_TIMEOUT: + ir->props->timeout = MS_TO_NS((hi << 8 | lo) / 2); + break; + + /* 1-byte return value commands */ + case MCE_CMD_S_TXMASK: + ir->tx_mask = hi; + break; + case MCE_CMD_S_RXSENSOR: + ir->learning_enabled = (hi == 0x02); + break; + default: + break; + } +} + +static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len) +{ + DEFINE_IR_RAW_EVENT(rawir); + int i = 0; + + /* skip meaningless 0xb1 0x60 header bytes on orig receiver */ + if (ir->flags.microsoft_gen1) + i = 2; + + /* if there's no data, just return now */ + if (buf_len <= i) + return; + + for (; i < buf_len; i++) { + switch (ir->parser_state) { + case SUBCMD: + ir->rem = mceusb_cmdsize(ir->cmd, ir->buf_in[i]); + mceusb_dev_printdata(ir, ir->buf_in, i - 1, + ir->rem + 2, false); + mceusb_handle_command(ir, i); + ir->parser_state = CMD_DATA; + break; + case PARSE_IRDATA: + ir->rem--; + rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0); + rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK) + * MS_TO_NS(MCE_TIME_UNIT); + + dev_dbg(ir->dev, "Storing %s with duration %d\n", + rawir.pulse ? "pulse" : "space", + rawir.duration); + + ir_raw_event_store_with_filter(ir->idev, &rawir); + break; + case CMD_DATA: + ir->rem--; + break; + case CMD_HEADER: + /* decode mce packets of the form (84),AA,BB,CC,DD */ + /* IR data packets can span USB messages - rem */ + ir->cmd = ir->buf_in[i]; + if ((ir->cmd == MCE_COMMAND_HEADER) || + ((ir->cmd & MCE_COMMAND_MASK) != + MCE_COMMAND_IRDATA)) { + ir->parser_state = SUBCMD; + continue; + } + ir->rem = (ir->cmd & MCE_PACKET_LENGTH_MASK); + mceusb_dev_printdata(ir, ir->buf_in, + i, ir->rem + 1, false); + if (ir->rem) + ir->parser_state = PARSE_IRDATA; + break; + } + + if (ir->parser_state != CMD_HEADER && !ir->rem) + ir->parser_state = CMD_HEADER; + } + dev_dbg(ir->dev, "processed IR data, calling ir_raw_event_handle\n"); + ir_raw_event_handle(ir->idev); +} + +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->send_flags == RECV_FLAG_IN_PROGRESS) { + ir->send_flags = SEND_FLAG_COMPLETE; + dev_dbg(ir->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: + dev_dbg(ir->dev, "Error: urb status = %d\n", urb->status); + break; + } + + usb_submit_urb(urb, GFP_ATOMIC); +} + +static void mceusb_gen1_init(struct mceusb_dev *ir) +{ + int ret; + int maxp = ir->len_in; + struct device *dev = ir->dev; + char *data; + + data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL); + if (!data) { + dev_err(dev, "%s: memory allocation failed!\n", __func__); + return; + } + + /* + * This is a strange one. Windows issues a set address to the device + * on the receive control pipe and expect a certain value pair back + */ + ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0), + USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0, + data, USB_CTRL_MSG_SZ, 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); + + /* 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); + + kfree(data); +}; + +static void mceusb_gen2_init(struct mceusb_dev *ir) +{ + int maxp = ir->len_in; + + /* 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 the next two actually return... */ + mce_async_out(ir, GET_UNKNOWN, sizeof(GET_UNKNOWN)); + mce_sync_in(ir, NULL, maxp); + mce_async_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2)); + mce_sync_in(ir, NULL, maxp); +} + +static void mceusb_get_parameters(struct mceusb_dev *ir) +{ + int maxp = ir->len_in; + + /* get the carrier and frequency */ + mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ)); + mce_sync_in(ir, NULL, maxp); + + if (!ir->flags.no_tx) { + /* 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 device *dev = ir->dev; + const char *rc_map = RC_MAP_RC6_MCE; + const char *name = "Media Center Ed. eHome Infrared Remote Transceiver"; + 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; + } + + if (mceusb_model[ir->model].name) + name = mceusb_model[ir->model].name; + + snprintf(ir->name, sizeof(ir->name), "%s (%04x:%04x)", + name, + le16_to_cpu(ir->usbdev->descriptor.idVendor), + le16_to_cpu(ir->usbdev->descriptor.idProduct)); + + 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; + + props->priv = ir; + props->driver_type = RC_DRIVER_IR_RAW; + props->allowed_protos = IR_TYPE_ALL; + props->timeout = MS_TO_NS(1000); + if (!ir->flags.no_tx) { + props->s_tx_mask = mceusb_set_tx_mask; + props->s_tx_carrier = mceusb_set_tx_carrier; + props->tx_ir = mceusb_tx_ir; + } + + ir->props = props; + + usb_to_input_id(ir->usbdev, &idev->id); + idev->dev.parent = ir->dev; + + if (mceusb_model[ir->model].rc_map) + rc_map = mceusb_model[ir->model].rc_map; + + ret = ir_input_register(idev, rc_map, props, DRIVER_NAME); + if (ret < 0) { + dev_err(dev, "remote input device register failed\n"); + goto irdev_failed; + } + + return idev; + +irdev_failed: + kfree(props); +props_alloc_failed: + input_free_device(idev); +idev_alloc_failed: + return NULL; +} + +static int __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 mceusb_dev *ir = NULL; + int pipe, maxp, i; + char buf[63], name[128] = ""; + enum mceusb_model_type model = id->driver_info; + bool is_gen3; + bool is_microsoft_gen1; + bool tx_mask_normal; + bool is_polaris; + + dev_dbg(&intf->dev, "%s called\n", __func__); + + idesc = intf->cur_altsetting; + + is_gen3 = mceusb_model[model].mce_gen3; + is_microsoft_gen1 = mceusb_model[model].mce_gen1; + tx_mask_normal = mceusb_model[model].tx_mask_normal; + is_polaris = mceusb_model[model].is_polaris; + + if (is_polaris) { + /* Interface 0 is IR */ + if (idesc->desc.bInterfaceNumber) + return -ENODEV; + } + + /* 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))) { + + ep_in = ep; + ep_in->bmAttributes = USB_ENDPOINT_XFER_INT; + ep_in->bInterval = 1; + dev_dbg(&intf->dev, "acceptable inbound endpoint " + "found\n"); + } + + 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))) { + + ep_out = ep; + ep_out->bmAttributes = USB_ENDPOINT_XFER_INT; + ep_out->bInterval = 1; + dev_dbg(&intf->dev, "acceptable outbound endpoint " + "found\n"); + } + } + 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.microsoft_gen1 = is_microsoft_gen1; + ir->flags.tx_mask_normal = tx_mask_normal; + ir->flags.no_tx = mceusb_model[model].no_tx; + ir->model = model; + + /* 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; + + /* flush buffers on the device */ + mce_sync_in(ir, NULL, maxp); + mce_sync_in(ir, NULL, maxp); + + /* wire up inbound data handler */ + 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; + + /* initialize device */ + if (ir->flags.microsoft_gen1) + mceusb_gen1_init(ir); + else if (!is_gen3) + mceusb_gen2_init(ir); + + mceusb_get_parameters(ir); + + if (!ir->flags.no_tx) + mceusb_set_tx_mask(ir, MCE_DEFAULT_TX_MASK); + + 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; + ir_input_unregister(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"); |