summaryrefslogtreecommitdiffstats
path: root/drivers/media/rc/mceusb.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/rc/mceusb.c')
-rw-r--r--drivers/media/rc/mceusb.c1897
1 files changed, 1897 insertions, 0 deletions
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
new file mode 100644
index 000000000..c76ba24c1
--- /dev/null
+++ b/drivers/media/rc/mceusb.c
@@ -0,0 +1,1897 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers
+ *
+ * Copyright (c) 2010-2011, 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.
+ *
+ * Updated in July of 2011 with the aid of Microsoft's official
+ * remote/transceiver requirements and specification document, found at
+ * download.microsoft.com, title
+ * Windows-Media-Center-RC-IR-Collection-Green-Button-Specification-03-08-2011-V2.pdf
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/usb.h>
+#include <linux/usb/input.h>
+#include <linux/pm_wakeup.h>
+#include <media/rc-core.h>
+
+#define DRIVER_VERSION "1.95"
+#define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>"
+#define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \
+ "device driver"
+#define DRIVER_NAME "mceusb"
+
+#define USB_TX_TIMEOUT 1000 /* in milliseconds */
+#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 */
+
+/* MCE constants */
+#define MCE_IRBUF_SIZE 128 /* TX IR buffer length */
+#define MCE_TIME_UNIT 50 /* Approx 50us resolution */
+#define MCE_PACKET_SIZE 31 /* Max length of packet (with header) */
+#define MCE_IRDATA_HEADER (0x80 + MCE_PACKET_SIZE - 1)
+ /* Actual format is 0x80 + num_bytes */
+#define MCE_IRDATA_TRAILER 0x80 /* End of IR data */
+#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 */
+
+/*
+ * The interface between the host and the IR hardware is command-response
+ * based. All commands and responses have a consistent format, where a lead
+ * byte always identifies the type of data following it. The lead byte has
+ * a port value in the 3 highest bits and a length value in the 5 lowest
+ * bits.
+ *
+ * The length field is overloaded, with a value of 11111 indicating that the
+ * following byte is a command or response code, and the length of the entire
+ * message is determined by the code. If the length field is not 11111, then
+ * it specifies the number of bytes of port data that follow.
+ */
+#define MCE_CMD 0x1f
+#define MCE_PORT_IR 0x4 /* (0x4 << 5) | MCE_CMD = 0x9f */
+#define MCE_PORT_SYS 0x7 /* (0x7 << 5) | MCE_CMD = 0xff */
+#define MCE_PORT_SER 0x6 /* 0xc0 through 0xdf flush & 0x1f bytes */
+#define MCE_PORT_MASK 0xe0 /* Mask out command bits */
+
+/* Command port headers */
+#define MCE_CMD_PORT_IR 0x9f /* IR-related cmd/rsp */
+#define MCE_CMD_PORT_SYS 0xff /* System (non-IR) device cmd/rsp */
+
+/* Commands that set device state (2-4 bytes in length) */
+#define MCE_CMD_RESET 0xfe /* Reset device, 2 bytes */
+#define MCE_CMD_RESUME 0xaa /* Resume device after error, 2 bytes */
+#define MCE_CMD_SETIRCFS 0x06 /* Set tx carrier, 4 bytes */
+#define MCE_CMD_SETIRTIMEOUT 0x0c /* Set timeout, 4 bytes */
+#define MCE_CMD_SETIRTXPORTS 0x08 /* Set tx ports, 3 bytes */
+#define MCE_CMD_SETIRRXPORTEN 0x14 /* Set rx ports, 3 bytes */
+#define MCE_CMD_FLASHLED 0x23 /* Flash receiver LED, 2 bytes */
+
+/* Commands that query device state (all 2 bytes, unless noted) */
+#define MCE_CMD_GETIRCFS 0x07 /* Get carrier */
+#define MCE_CMD_GETIRTIMEOUT 0x0d /* Get timeout */
+#define MCE_CMD_GETIRTXPORTS 0x13 /* Get tx ports */
+#define MCE_CMD_GETIRRXPORTEN 0x15 /* Get rx ports */
+#define MCE_CMD_GETPORTSTATUS 0x11 /* Get tx port status, 3 bytes */
+#define MCE_CMD_GETIRNUMPORTS 0x16 /* Get number of ports */
+#define MCE_CMD_GETWAKESOURCE 0x17 /* Get wake source */
+#define MCE_CMD_GETEMVER 0x22 /* Get emulator interface version */
+#define MCE_CMD_GETDEVDETAILS 0x21 /* Get device details (em ver2 only) */
+#define MCE_CMD_GETWAKESUPPORT 0x20 /* Get wake details (em ver2 only) */
+#define MCE_CMD_GETWAKEVERSION 0x18 /* Get wake pattern (em ver2 only) */
+
+/* Misc commands */
+#define MCE_CMD_NOP 0xff /* No operation */
+
+/* Responses to commands (non-error cases) */
+#define MCE_RSP_EQIRCFS 0x06 /* tx carrier, 4 bytes */
+#define MCE_RSP_EQIRTIMEOUT 0x0c /* rx timeout, 4 bytes */
+#define MCE_RSP_GETWAKESOURCE 0x17 /* wake source, 3 bytes */
+#define MCE_RSP_EQIRTXPORTS 0x08 /* tx port mask, 3 bytes */
+#define MCE_RSP_EQIRRXPORTEN 0x14 /* rx port mask, 3 bytes */
+#define MCE_RSP_GETPORTSTATUS 0x11 /* tx port status, 7 bytes */
+#define MCE_RSP_EQIRRXCFCNT 0x15 /* rx carrier count, 4 bytes */
+#define MCE_RSP_EQIRNUMPORTS 0x16 /* number of ports, 4 bytes */
+#define MCE_RSP_EQWAKESUPPORT 0x20 /* wake capabilities, 3 bytes */
+#define MCE_RSP_EQWAKEVERSION 0x18 /* wake pattern details, 6 bytes */
+#define MCE_RSP_EQDEVDETAILS 0x21 /* device capabilities, 3 bytes */
+#define MCE_RSP_EQEMVER 0x22 /* emulator interface ver, 3 bytes */
+#define MCE_RSP_FLASHLED 0x23 /* success flashing LED, 2 bytes */
+
+/* Responses to error cases, must send MCE_CMD_RESUME to clear them */
+#define MCE_RSP_CMD_ILLEGAL 0xfe /* illegal command for port, 2 bytes */
+#define MCE_RSP_TX_TIMEOUT 0x81 /* tx timed out, 2 bytes */
+
+/* Misc commands/responses not defined in the MCE remote/transceiver spec */
+#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_UNKNOWN3 0x09 /* Unknown */
+#define MCE_CMD_UNKNOWN4 0x0a /* Unknown */
+#define MCE_CMD_G_REVISION 0x0b /* Get hw/sw revision */
+#define MCE_CMD_UNKNOWN5 0x0e /* Unknown */
+#define MCE_CMD_UNKNOWN6 0x0f /* Unknown */
+#define MCE_CMD_UNKNOWN8 0x19 /* Unknown */
+#define MCE_CMD_UNKNOWN9 0x1b /* Unknown */
+#define MCE_CMD_NULL 0x00 /* These show up various places... */
+
+/* if buf[i] & MCE_PORT_MASK == 0x80 and buf[i] != MCE_CMD_PORT_IR,
+ * then we're looking at a raw IR data sample */
+#define MCE_COMMAND_IRDATA 0x80
+#define MCE_PACKET_LENGTH_MASK 0x1f /* Packet length mask */
+
+#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
+#define VENDOR_TWISTEDMELON 0x2596
+#define VENDOR_HAUPPAUGE 0x2040
+#define VENDOR_PCTV 0x2013
+#define VENDOR_ADAPTEC 0x03f3
+
+enum mceusb_model_type {
+ MCE_GEN2 = 0, /* Most boards */
+ MCE_GEN1,
+ MCE_GEN3,
+ MCE_GEN3_BROKEN_IRTIMEOUT,
+ MCE_GEN2_TX_INV,
+ MCE_GEN2_TX_INV_RX_GOOD,
+ POLARIS_EVK,
+ CX_HYBRID_TV,
+ MULTIFUNCTION,
+ TIVO_KIT,
+ MCE_GEN2_NO_TX,
+ HAUPPAUGE_CX_HYBRID_TV,
+ EVROMEDIA_FULL_HYBRID_FULLHD,
+ ASTROMETA_T2HYBRID,
+};
+
+struct mceusb_model {
+ u32 mce_gen1:1;
+ u32 mce_gen2:1;
+ u32 mce_gen3:1;
+ u32 tx_mask_normal:1;
+ u32 no_tx:1;
+ u32 broken_irtimeout:1;
+ /*
+ * 2nd IR receiver (short-range, wideband) for learning mode:
+ * 0, absent 2nd receiver (rx2)
+ * 1, rx2 present
+ * 2, rx2 which under counts IR carrier cycles
+ */
+ u32 rx2;
+
+ int ir_intfnum;
+
+ 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,
+ .rx2 = 2,
+ },
+ [MCE_GEN2] = {
+ .mce_gen2 = 1,
+ .rx2 = 2,
+ },
+ [MCE_GEN2_NO_TX] = {
+ .mce_gen2 = 1,
+ .no_tx = 1,
+ },
+ [MCE_GEN2_TX_INV] = {
+ .mce_gen2 = 1,
+ .tx_mask_normal = 1,
+ .rx2 = 1,
+ },
+ [MCE_GEN2_TX_INV_RX_GOOD] = {
+ .mce_gen2 = 1,
+ .tx_mask_normal = 1,
+ .rx2 = 2,
+ },
+ [MCE_GEN3] = {
+ .mce_gen3 = 1,
+ .tx_mask_normal = 1,
+ .rx2 = 2,
+ },
+ [MCE_GEN3_BROKEN_IRTIMEOUT] = {
+ .mce_gen3 = 1,
+ .tx_mask_normal = 1,
+ .rx2 = 2,
+ .broken_irtimeout = 1
+ },
+ [POLARIS_EVK] = {
+ /*
+ * In fact, the EVK is shipped without
+ * remotes, but we should have something handy,
+ * to allow testing it
+ */
+ .name = "Conexant Hybrid TV (cx231xx) MCE IR",
+ .rx2 = 2,
+ },
+ [CX_HYBRID_TV] = {
+ .no_tx = 1, /* tx isn't wired up at all */
+ .name = "Conexant Hybrid TV (cx231xx) MCE IR",
+ },
+ [HAUPPAUGE_CX_HYBRID_TV] = {
+ .no_tx = 1, /* eeprom says it has no tx */
+ .name = "Conexant Hybrid TV (cx231xx) MCE IR no TX",
+ },
+ [MULTIFUNCTION] = {
+ .mce_gen2 = 1,
+ .ir_intfnum = 2,
+ .rx2 = 2,
+ },
+ [TIVO_KIT] = {
+ .mce_gen2 = 1,
+ .rc_map = RC_MAP_TIVO,
+ .rx2 = 2,
+ },
+ [EVROMEDIA_FULL_HYBRID_FULLHD] = {
+ .name = "Evromedia USB Full Hybrid Full HD",
+ .no_tx = 1,
+ .rc_map = RC_MAP_MSI_DIGIVOX_III,
+ },
+ [ASTROMETA_T2HYBRID] = {
+ .name = "Astrometa T2Hybrid",
+ .no_tx = 1,
+ .rc_map = RC_MAP_ASTROMETA_T2HYBRID,
+ }
+};
+
+static const 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) },
+ /* Philips IR transceiver (Dell branded) */
+ { USB_DEVICE(VENDOR_PHILIPS, 0x2093),
+ .driver_info = MCE_GEN2_TX_INV },
+ /* Realtek MCE IR Receiver and card reader */
+ { USB_DEVICE(VENDOR_REALTEK, 0x0161),
+ .driver_info = MULTIFUNCTION },
+ /* SMK/Toshiba G83C0004D410 */
+ { USB_DEVICE(VENDOR_SMK, 0x031d),
+ .driver_info = MCE_GEN2_TX_INV_RX_GOOD },
+ /* 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) },
+ /* SMK/I-O Data GV-MC7/RCKIT Receiver */
+ { USB_DEVICE(VENDOR_SMK, 0x0353),
+ .driver_info = MCE_GEN2_NO_TX },
+ /* SMK RXX6000 Infrared Receiver */
+ { USB_DEVICE(VENDOR_SMK, 0x0357),
+ .driver_info = MCE_GEN2_NO_TX },
+ /* 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_GEN3_BROKEN_IRTIMEOUT },
+ /* 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),
+ .driver_info = MCE_GEN2_NO_TX },
+ /* 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) },
+ /* Formosa Industrial Computing */
+ { USB_DEVICE(VENDOR_FORMOSA, 0xe042) },
+ /* Fintek eHome Infrared Transceiver (HP branded) */
+ { USB_DEVICE(VENDOR_FINTEK, 0x5168),
+ .driver_info = MCE_GEN2_TX_INV },
+ /* 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),
+ .driver_info = TIVO_KIT },
+ /* 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 },
+ /* Twisted Melon Inc. - Manta Mini Receiver */
+ { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8008) },
+ /* Twisted Melon Inc. - Manta Pico Receiver */
+ { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8016) },
+ /* Twisted Melon Inc. - Manta Transceiver */
+ { USB_DEVICE(VENDOR_TWISTEDMELON, 0x8042) },
+ /* Hauppauge WINTV-HVR-HVR 930C-HD - based on cx231xx */
+ { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb130),
+ .driver_info = HAUPPAUGE_CX_HYBRID_TV },
+ { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb131),
+ .driver_info = HAUPPAUGE_CX_HYBRID_TV },
+ { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb138),
+ .driver_info = HAUPPAUGE_CX_HYBRID_TV },
+ { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb139),
+ .driver_info = HAUPPAUGE_CX_HYBRID_TV },
+ /* Hauppauge WinTV-HVR-935C - based on cx231xx */
+ { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb151),
+ .driver_info = HAUPPAUGE_CX_HYBRID_TV },
+ /* Hauppauge WinTV-HVR-955Q - based on cx231xx */
+ { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb123),
+ .driver_info = HAUPPAUGE_CX_HYBRID_TV },
+ /* Hauppauge WinTV-HVR-975 - based on cx231xx */
+ { USB_DEVICE(VENDOR_HAUPPAUGE, 0xb150),
+ .driver_info = HAUPPAUGE_CX_HYBRID_TV },
+ { USB_DEVICE(VENDOR_PCTV, 0x0259),
+ .driver_info = HAUPPAUGE_CX_HYBRID_TV },
+ { USB_DEVICE(VENDOR_PCTV, 0x025e),
+ .driver_info = HAUPPAUGE_CX_HYBRID_TV },
+ /* Adaptec / HP eHome Receiver */
+ { USB_DEVICE(VENDOR_ADAPTEC, 0x0094) },
+ /* Evromedia USB Full Hybrid Full HD */
+ { USB_DEVICE(0x1b80, 0xd3b2),
+ .driver_info = EVROMEDIA_FULL_HYBRID_FULLHD },
+ /* Astrometa T2hybrid */
+ { USB_DEVICE(0x15f4, 0x0135),
+ .driver_info = ASTROMETA_T2HYBRID },
+
+ /* Terminating entry */
+ { }
+};
+
+/* data structure for each usb transceiver */
+struct mceusb_dev {
+ /* ir-core bits */
+ struct rc_dev *rc;
+
+ /* optional features we can enable */
+ bool carrier_report_enabled;
+ bool wideband_rx_enabled; /* aka learning mode, short-range rx */
+
+ /* core device bits */
+ struct device *dev;
+
+ /* usb */
+ struct usb_device *usbdev;
+ struct usb_interface *usbintf;
+ struct urb *urb_in;
+ unsigned int pipe_in;
+ struct usb_endpoint_descriptor *usb_ep_out;
+ unsigned int pipe_out;
+
+ /* buffers and dma */
+ unsigned char *buf_in;
+ unsigned int len_in;
+ dma_addr_t dma_in;
+
+ 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;
+ u32 rx2;
+ } flags;
+
+ /* transmit support */
+ u32 carrier;
+ unsigned char tx_mask;
+
+ char name[128];
+ char phys[64];
+ enum mceusb_model_type model;
+
+ bool need_reset; /* flag to issue a device resume cmd */
+ u8 emver; /* emulator interface version */
+ u8 num_txports; /* number of transmit ports */
+ u8 num_rxports; /* number of receive sensors */
+ u8 txports_cabled; /* bitmask of transmitters with cable */
+ u8 rxports_active; /* bitmask of active receive sensors */
+ bool learning_active; /* wideband rx is active */
+
+ /* receiver carrier frequency detection support */
+ u32 pulse_tunit; /* IR pulse "on" cumulative time units */
+ u32 pulse_count; /* pulse "on" count in measurement interval */
+
+ /*
+ * support for async error handler mceusb_deferred_kevent()
+ * where usb_clear_halt(), usb_reset_configuration(),
+ * usb_reset_device(), etc. must be done in process context
+ */
+ struct work_struct kevent;
+ unsigned long kevent_flags;
+# define EVENT_TX_HALT 0
+# define EVENT_RX_HALT 1
+# define EVENT_RST_PEND 31
+};
+
+/* MCE Device Command Strings, generally a port and command pair */
+static char DEVICE_RESUME[] = {MCE_CMD_NULL, MCE_CMD_PORT_SYS,
+ MCE_CMD_RESUME};
+static char GET_REVISION[] = {MCE_CMD_PORT_SYS, MCE_CMD_G_REVISION};
+static char GET_EMVER[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETEMVER};
+static char GET_WAKEVERSION[] = {MCE_CMD_PORT_SYS, MCE_CMD_GETWAKEVERSION};
+static char FLASH_LED[] = {MCE_CMD_PORT_SYS, MCE_CMD_FLASHLED};
+static char GET_UNKNOWN2[] = {MCE_CMD_PORT_IR, MCE_CMD_UNKNOWN2};
+static char GET_CARRIER_FREQ[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRCFS};
+static char GET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTIMEOUT};
+static char GET_NUM_PORTS[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRNUMPORTS};
+static char GET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRTXPORTS};
+static char GET_RX_SENSOR[] = {MCE_CMD_PORT_IR, MCE_CMD_GETIRRXPORTEN};
+/* 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_CMD_PORT_IR,
+ MCE_CMD_SETIRCFS, 0x00, 0x00};
+static char SET_TX_BITMASK[] = {MCE_CMD_PORT_IR, MCE_CMD_SETIRTXPORTS, 0x00};
+static char SET_RX_TIMEOUT[] = {MCE_CMD_PORT_IR,
+ MCE_CMD_SETIRTIMEOUT, 0x00, 0x00};
+static char SET_RX_SENSOR[] = {MCE_CMD_PORT_IR,
+ MCE_RSP_EQIRRXPORTEN, 0x00};
+*/
+
+static int mceusb_cmd_datasize(u8 cmd, u8 subcmd)
+{
+ int datasize = 0;
+
+ switch (cmd) {
+ case MCE_CMD_NULL:
+ if (subcmd == MCE_CMD_PORT_SYS)
+ datasize = 1;
+ break;
+ case MCE_CMD_PORT_SYS:
+ switch (subcmd) {
+ case MCE_RSP_GETPORTSTATUS:
+ datasize = 5;
+ break;
+ case MCE_RSP_EQWAKEVERSION:
+ datasize = 4;
+ break;
+ case MCE_CMD_G_REVISION:
+ datasize = 4;
+ break;
+ case MCE_RSP_EQWAKESUPPORT:
+ case MCE_RSP_GETWAKESOURCE:
+ case MCE_RSP_EQDEVDETAILS:
+ case MCE_RSP_EQEMVER:
+ datasize = 1;
+ break;
+ }
+ break;
+ case MCE_CMD_PORT_IR:
+ switch (subcmd) {
+ case MCE_CMD_UNKNOWN:
+ case MCE_RSP_EQIRCFS:
+ case MCE_RSP_EQIRTIMEOUT:
+ case MCE_RSP_EQIRRXCFCNT:
+ case MCE_RSP_EQIRNUMPORTS:
+ datasize = 2;
+ break;
+ case MCE_CMD_SIG_END:
+ case MCE_RSP_EQIRTXPORTS:
+ case MCE_RSP_EQIRRXPORTEN:
+ datasize = 1;
+ break;
+ }
+ }
+ return datasize;
+}
+
+static void mceusb_dev_printdata(struct mceusb_dev *ir, u8 *buf, int buf_len,
+ int offset, int len, bool out)
+{
+#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
+ char *inout;
+ u8 cmd, subcmd, *data;
+ struct device *dev = ir->dev;
+ u32 carrier, period;
+
+ if (offset < 0 || offset >= buf_len)
+ return;
+
+ dev_dbg(dev, "%cx data[%d]: %*ph (len=%d sz=%d)",
+ (out ? 't' : 'r'), offset,
+ min(len, buf_len - offset), buf + offset, len, buf_len);
+
+ inout = out ? "Request" : "Got";
+
+ cmd = buf[offset];
+ subcmd = (offset + 1 < buf_len) ? buf[offset + 1] : 0;
+ data = &buf[offset] + 2;
+
+ /* Trace meaningless 0xb1 0x60 header bytes on original receiver */
+ if (ir->flags.microsoft_gen1 && !out && !offset) {
+ dev_dbg(dev, "MCE gen 1 header");
+ return;
+ }
+
+ /* Trace IR data header or trailer */
+ if (cmd != MCE_CMD_PORT_IR &&
+ (cmd & MCE_PORT_MASK) == MCE_COMMAND_IRDATA) {
+ if (cmd == MCE_IRDATA_TRAILER)
+ dev_dbg(dev, "End of raw IR data");
+ else
+ dev_dbg(dev, "Raw IR data, %d pulse/space samples",
+ cmd & MCE_PACKET_LENGTH_MASK);
+ return;
+ }
+
+ /* Unexpected end of buffer? */
+ if (offset + len > buf_len)
+ return;
+
+ /* Decode MCE command/response */
+ switch (cmd) {
+ case MCE_CMD_NULL:
+ if (subcmd == MCE_CMD_NULL)
+ break;
+ if ((subcmd == MCE_CMD_PORT_SYS) &&
+ (data[0] == MCE_CMD_RESUME))
+ dev_dbg(dev, "Device resume requested");
+ else
+ dev_dbg(dev, "Unknown command 0x%02x 0x%02x",
+ cmd, subcmd);
+ break;
+ case MCE_CMD_PORT_SYS:
+ switch (subcmd) {
+ case MCE_RSP_EQEMVER:
+ if (!out)
+ dev_dbg(dev, "Emulator interface version %x",
+ data[0]);
+ break;
+ case MCE_CMD_G_REVISION:
+ if (len == 2)
+ dev_dbg(dev, "Get hw/sw rev?");
+ else
+ dev_dbg(dev, "hw/sw rev %*ph",
+ 4, &buf[offset + 2]);
+ break;
+ case MCE_CMD_RESUME:
+ dev_dbg(dev, "Device resume requested");
+ break;
+ case MCE_RSP_CMD_ILLEGAL:
+ dev_dbg(dev, "Illegal PORT_SYS command");
+ break;
+ case MCE_RSP_EQWAKEVERSION:
+ if (!out)
+ dev_dbg(dev, "Wake version, proto: 0x%02x, payload: 0x%02x, address: 0x%02x, version: 0x%02x",
+ data[0], data[1], data[2], data[3]);
+ break;
+ case MCE_RSP_GETPORTSTATUS:
+ if (!out)
+ /* We use data1 + 1 here, to match hw labels */
+ dev_dbg(dev, "TX port %d: blaster is%s connected",
+ data[0] + 1, data[3] ? " not" : "");
+ break;
+ case MCE_CMD_FLASHLED:
+ dev_dbg(dev, "Attempting to flash LED");
+ break;
+ default:
+ dev_dbg(dev, "Unknown command 0x%02x 0x%02x",
+ cmd, subcmd);
+ break;
+ }
+ break;
+ case MCE_CMD_PORT_IR:
+ switch (subcmd) {
+ case MCE_CMD_SIG_END:
+ dev_dbg(dev, "End of signal");
+ break;
+ case MCE_CMD_PING:
+ dev_dbg(dev, "Ping");
+ break;
+ case MCE_CMD_UNKNOWN:
+ dev_dbg(dev, "Resp to 9f 05 of 0x%02x 0x%02x",
+ data[0], data[1]);
+ break;
+ case MCE_RSP_EQIRCFS:
+ if (!data[0] && !data[1]) {
+ dev_dbg(dev, "%s: no carrier", inout);
+ break;
+ }
+ // prescaler should make sense
+ if (data[0] > 8)
+ break;
+ period = DIV_ROUND_CLOSEST((1U << data[0] * 2) *
+ (data[1] + 1), 10);
+ if (!period)
+ break;
+ carrier = USEC_PER_SEC / period;
+ dev_dbg(dev, "%s carrier of %u Hz (period %uus)",
+ inout, carrier, period);
+ break;
+ case MCE_CMD_GETIRCFS:
+ dev_dbg(dev, "Get carrier mode and freq");
+ break;
+ case MCE_RSP_EQIRTXPORTS:
+ dev_dbg(dev, "%s transmit blaster mask of 0x%02x",
+ inout, data[0]);
+ break;
+ case MCE_RSP_EQIRTIMEOUT:
+ /* value is in units of 50us, so x*50/1000 ms */
+ period = ((data[0] << 8) | data[1]) *
+ MCE_TIME_UNIT / 1000;
+ dev_dbg(dev, "%s receive timeout of %d ms",
+ inout, period);
+ break;
+ case MCE_CMD_GETIRTIMEOUT:
+ dev_dbg(dev, "Get receive timeout");
+ break;
+ case MCE_CMD_GETIRTXPORTS:
+ dev_dbg(dev, "Get transmit blaster mask");
+ break;
+ case MCE_RSP_EQIRRXPORTEN:
+ dev_dbg(dev, "%s %s-range receive sensor in use",
+ inout, data[0] == 0x02 ? "short" : "long");
+ break;
+ case MCE_CMD_GETIRRXPORTEN:
+ /* aka MCE_RSP_EQIRRXCFCNT */
+ if (out)
+ dev_dbg(dev, "Get receive sensor");
+ else
+ dev_dbg(dev, "RX carrier cycle count: %d",
+ ((data[0] << 8) | data[1]));
+ break;
+ case MCE_RSP_EQIRNUMPORTS:
+ if (out)
+ break;
+ dev_dbg(dev, "Num TX ports: %x, num RX ports: %x",
+ data[0], data[1]);
+ break;
+ case MCE_RSP_CMD_ILLEGAL:
+ dev_dbg(dev, "Illegal PORT_IR command");
+ break;
+ case MCE_RSP_TX_TIMEOUT:
+ dev_dbg(dev, "IR TX timeout (TX buffer underrun)");
+ break;
+ default:
+ dev_dbg(dev, "Unknown command 0x%02x 0x%02x",
+ cmd, subcmd);
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+#endif
+}
+
+/*
+ * Schedule work that can't be done in interrupt handlers
+ * (mceusb_dev_recv() and mce_write_callback()) nor tasklets.
+ * Invokes mceusb_deferred_kevent() for recovering from
+ * error events specified by the kevent bit field.
+ */
+static void mceusb_defer_kevent(struct mceusb_dev *ir, int kevent)
+{
+ set_bit(kevent, &ir->kevent_flags);
+
+ if (test_bit(EVENT_RST_PEND, &ir->kevent_flags)) {
+ dev_dbg(ir->dev, "kevent %d dropped pending USB Reset Device",
+ kevent);
+ return;
+ }
+
+ if (!schedule_work(&ir->kevent))
+ dev_dbg(ir->dev, "kevent %d already scheduled", kevent);
+ else
+ dev_dbg(ir->dev, "kevent %d scheduled", kevent);
+}
+
+static void mce_write_callback(struct urb *urb)
+{
+ if (!urb)
+ return;
+
+ complete(urb->context);
+}
+
+/*
+ * Write (TX/send) data to MCE device USB endpoint out.
+ * Used for IR blaster TX and MCE device commands.
+ *
+ * Return: The number of bytes written (> 0) or errno (< 0).
+ */
+static int mce_write(struct mceusb_dev *ir, u8 *data, int size)
+{
+ int ret;
+ struct urb *urb;
+ struct device *dev = ir->dev;
+ unsigned char *buf_out;
+ struct completion tx_done;
+ unsigned long expire;
+ unsigned long ret_wait;
+
+ mceusb_dev_printdata(ir, data, size, 0, size, true);
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (unlikely(!urb)) {
+ dev_err(dev, "Error: mce write couldn't allocate urb");
+ return -ENOMEM;
+ }
+
+ buf_out = kmalloc(size, GFP_KERNEL);
+ if (!buf_out) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ init_completion(&tx_done);
+
+ /* outbound data */
+ if (usb_endpoint_xfer_int(ir->usb_ep_out))
+ usb_fill_int_urb(urb, ir->usbdev, ir->pipe_out,
+ buf_out, size, mce_write_callback, &tx_done,
+ ir->usb_ep_out->bInterval);
+ else
+ usb_fill_bulk_urb(urb, ir->usbdev, ir->pipe_out,
+ buf_out, size, mce_write_callback, &tx_done);
+ memcpy(buf_out, data, size);
+
+ ret = usb_submit_urb(urb, GFP_KERNEL);
+ if (ret) {
+ dev_err(dev, "Error: mce write submit urb error = %d", ret);
+ kfree(buf_out);
+ usb_free_urb(urb);
+ return ret;
+ }
+
+ expire = msecs_to_jiffies(USB_TX_TIMEOUT);
+ ret_wait = wait_for_completion_timeout(&tx_done, expire);
+ if (!ret_wait) {
+ dev_err(dev, "Error: mce write timed out (expire = %lu (%dms))",
+ expire, USB_TX_TIMEOUT);
+ usb_kill_urb(urb);
+ ret = (urb->status == -ENOENT ? -ETIMEDOUT : urb->status);
+ } else {
+ ret = urb->status;
+ }
+ if (ret >= 0)
+ ret = urb->actual_length; /* bytes written */
+
+ switch (urb->status) {
+ /* success */
+ case 0:
+ break;
+
+ case -ECONNRESET:
+ case -ENOENT:
+ case -EILSEQ:
+ case -ESHUTDOWN:
+ break;
+
+ case -EPIPE:
+ dev_err(ir->dev, "Error: mce write urb status = %d (TX HALT)",
+ urb->status);
+ mceusb_defer_kevent(ir, EVENT_TX_HALT);
+ break;
+
+ default:
+ dev_err(ir->dev, "Error: mce write urb status = %d",
+ urb->status);
+ break;
+ }
+
+ dev_dbg(dev, "tx done status = %d (wait = %lu, expire = %lu (%dms), urb->actual_length = %d, urb->status = %d)",
+ ret, ret_wait, expire, USB_TX_TIMEOUT,
+ urb->actual_length, urb->status);
+
+ kfree(buf_out);
+ usb_free_urb(urb);
+
+ return ret;
+}
+
+static void mce_command_out(struct mceusb_dev *ir, u8 *data, int size)
+{
+ int rsize = sizeof(DEVICE_RESUME);
+
+ if (ir->need_reset) {
+ ir->need_reset = false;
+ mce_write(ir, DEVICE_RESUME, rsize);
+ msleep(10);
+ }
+
+ mce_write(ir, data, size);
+ msleep(10);
+}
+
+/*
+ * Transmit IR out the MCE device IR blaster port(s).
+ *
+ * Convert IR pulse/space sequence from LIRC to MCE format.
+ * Break up a long IR sequence into multiple parts (MCE IR data packets).
+ *
+ * u32 txbuf[] consists of IR pulse, space, ..., and pulse times in usec.
+ * Pulses and spaces are implicit by their position.
+ * The first IR sample, txbuf[0], is always a pulse.
+ *
+ * u8 irbuf[] consists of multiple IR data packets for the MCE device.
+ * A packet is 1 u8 MCE_IRDATA_HEADER and up to 30 u8 IR samples.
+ * An IR sample is 1-bit pulse/space flag with 7-bit time
+ * in MCE time units (50usec).
+ *
+ * Return: The number of IR samples sent (> 0) or errno (< 0).
+ */
+static int mceusb_tx_ir(struct rc_dev *dev, unsigned *txbuf, unsigned count)
+{
+ struct mceusb_dev *ir = dev->priv;
+ u8 cmdbuf[3] = { MCE_CMD_PORT_IR, MCE_CMD_SETIRTXPORTS, 0x00 };
+ u8 irbuf[MCE_IRBUF_SIZE];
+ int ircount = 0;
+ unsigned int irsample;
+ int i, length, ret;
+
+ /* Send the set TX ports command */
+ cmdbuf[2] = ir->tx_mask;
+ mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
+
+ /* Generate mce IR data packet */
+ for (i = 0; i < count; i++) {
+ irsample = txbuf[i] / MCE_TIME_UNIT;
+
+ /* loop to support long pulses/spaces > 6350us (127*50us) */
+ while (irsample > 0) {
+ /* Insert IR header every 30th entry */
+ if (ircount % MCE_PACKET_SIZE == 0) {
+ /* Room for IR header and one IR sample? */
+ if (ircount >= MCE_IRBUF_SIZE - 1) {
+ /* Send near full buffer */
+ ret = mce_write(ir, irbuf, ircount);
+ if (ret < 0)
+ return ret;
+ ircount = 0;
+ }
+ irbuf[ircount++] = MCE_IRDATA_HEADER;
+ }
+
+ /* Insert IR sample */
+ if (irsample <= MCE_MAX_PULSE_LENGTH) {
+ irbuf[ircount] = irsample;
+ irsample = 0;
+ } else {
+ irbuf[ircount] = MCE_MAX_PULSE_LENGTH;
+ irsample -= MCE_MAX_PULSE_LENGTH;
+ }
+ /*
+ * Even i = IR pulse
+ * Odd i = IR space
+ */
+ irbuf[ircount] |= (i & 1 ? 0 : MCE_PULSE_BIT);
+ ircount++;
+
+ /* IR buffer full? */
+ if (ircount >= MCE_IRBUF_SIZE) {
+ /* Fix packet length in last header */
+ length = ircount % MCE_PACKET_SIZE;
+ if (length > 0)
+ irbuf[ircount - length] -=
+ MCE_PACKET_SIZE - length;
+ /* Send full buffer */
+ ret = mce_write(ir, irbuf, ircount);
+ if (ret < 0)
+ return ret;
+ ircount = 0;
+ }
+ }
+ } /* after for loop, 0 <= ircount < MCE_IRBUF_SIZE */
+
+ /* Fix packet length in last header */
+ length = ircount % MCE_PACKET_SIZE;
+ if (length > 0)
+ irbuf[ircount - length] -= MCE_PACKET_SIZE - length;
+
+ /* Append IR trailer (0x80) to final partial (or empty) IR buffer */
+ irbuf[ircount++] = MCE_IRDATA_TRAILER;
+
+ /* Send final buffer */
+ ret = mce_write(ir, irbuf, ircount);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+/* Sets active IR outputs -- mce devices typically have two */
+static int mceusb_set_tx_mask(struct rc_dev *dev, u32 mask)
+{
+ struct mceusb_dev *ir = dev->priv;
+
+ /* return number of transmitters */
+ int emitters = ir->num_txports ? ir->num_txports : 2;
+
+ if (mask >= (1 << emitters))
+ return emitters;
+
+ 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(struct rc_dev *dev, u32 carrier)
+{
+ struct mceusb_dev *ir = dev->priv;
+ int clk = 10000000;
+ int prescaler = 0, divisor = 0;
+ unsigned char cmdbuf[4] = { MCE_CMD_PORT_IR,
+ MCE_CMD_SETIRCFS, 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, "disabling carrier modulation");
+ mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
+ return 0;
+ }
+
+ 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, "requesting %u HZ carrier",
+ carrier);
+
+ /* Transmit new carrier to mce device */
+ mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+
+ }
+
+ return 0;
+}
+
+static int mceusb_set_timeout(struct rc_dev *dev, unsigned int timeout)
+{
+ u8 cmdbuf[4] = { MCE_CMD_PORT_IR, MCE_CMD_SETIRTIMEOUT, 0, 0 };
+ struct mceusb_dev *ir = dev->priv;
+ unsigned int units;
+
+ units = DIV_ROUND_UP(timeout, MCE_TIME_UNIT);
+
+ cmdbuf[2] = units >> 8;
+ cmdbuf[3] = units;
+
+ mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
+
+ /* get receiver timeout value */
+ mce_command_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
+
+ return 0;
+}
+
+/*
+ * Select or deselect the 2nd receiver port.
+ * Second receiver is learning mode, wide-band, short-range receiver.
+ * Only one receiver (long or short range) may be active at a time.
+ */
+static int mceusb_set_rx_wideband(struct rc_dev *dev, int enable)
+{
+ struct mceusb_dev *ir = dev->priv;
+ unsigned char cmdbuf[3] = { MCE_CMD_PORT_IR,
+ MCE_CMD_SETIRRXPORTEN, 0x00 };
+
+ dev_dbg(ir->dev, "select %s-range receive sensor",
+ enable ? "short" : "long");
+ if (enable) {
+ ir->wideband_rx_enabled = true;
+ cmdbuf[2] = 2; /* port 2 is short range receiver */
+ } else {
+ ir->wideband_rx_enabled = false;
+ cmdbuf[2] = 1; /* port 1 is long range receiver */
+ }
+ mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
+ /* response from device sets ir->learning_active */
+
+ return 0;
+}
+
+/*
+ * Enable/disable receiver carrier frequency pass through reporting.
+ * Only the short-range receiver has carrier frequency measuring capability.
+ * Implicitly select this receiver when enabling carrier frequency reporting.
+ */
+static int mceusb_set_rx_carrier_report(struct rc_dev *dev, int enable)
+{
+ struct mceusb_dev *ir = dev->priv;
+ unsigned char cmdbuf[3] = { MCE_CMD_PORT_IR,
+ MCE_CMD_SETIRRXPORTEN, 0x00 };
+
+ dev_dbg(ir->dev, "%s short-range receiver carrier reporting",
+ enable ? "enable" : "disable");
+ if (enable) {
+ ir->carrier_report_enabled = true;
+ if (!ir->learning_active) {
+ cmdbuf[2] = 2; /* port 2 is short range receiver */
+ mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
+ }
+ } else {
+ ir->carrier_report_enabled = false;
+ /*
+ * Revert to normal (long-range) receiver only if the
+ * wideband (short-range) receiver wasn't explicitly
+ * enabled.
+ */
+ if (ir->learning_active && !ir->wideband_rx_enabled) {
+ cmdbuf[2] = 1; /* port 1 is long range receiver */
+ mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Handle PORT_SYS/IR command response received from the MCE device.
+ *
+ * Assumes single response with all its data (not truncated)
+ * in buf_in[]. The response itself determines its total length
+ * (mceusb_cmd_datasize() + 2) and hence the minimum size of buf_in[].
+ *
+ * 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, u8 *buf_in)
+{
+ u8 cmd = buf_in[0];
+ u8 subcmd = buf_in[1];
+ u8 *hi = &buf_in[2]; /* read only when required */
+ u8 *lo = &buf_in[3]; /* read only when required */
+ struct ir_raw_event rawir = {};
+ u32 carrier_cycles;
+ u32 cycles_fix;
+
+ if (cmd == MCE_CMD_PORT_SYS) {
+ switch (subcmd) {
+ /* the one and only 5-byte return value command */
+ case MCE_RSP_GETPORTSTATUS:
+ if (buf_in[5] == 0 && *hi < 8)
+ ir->txports_cabled |= 1 << *hi;
+ break;
+
+ /* 1-byte return value commands */
+ case MCE_RSP_EQEMVER:
+ ir->emver = *hi;
+ break;
+
+ /* No return value commands */
+ case MCE_RSP_CMD_ILLEGAL:
+ ir->need_reset = true;
+ break;
+
+ default:
+ break;
+ }
+
+ return;
+ }
+
+ if (cmd != MCE_CMD_PORT_IR)
+ return;
+
+ switch (subcmd) {
+ /* 2-byte return value commands */
+ case MCE_RSP_EQIRTIMEOUT:
+ ir->rc->timeout = (*hi << 8 | *lo) * MCE_TIME_UNIT;
+ break;
+ case MCE_RSP_EQIRNUMPORTS:
+ ir->num_txports = *hi;
+ ir->num_rxports = *lo;
+ break;
+ case MCE_RSP_EQIRRXCFCNT:
+ /*
+ * The carrier cycle counter can overflow and wrap around
+ * without notice from the device. So frequency measurement
+ * will be inaccurate with long duration IR.
+ *
+ * The long-range (non learning) receiver always reports
+ * zero count so we always ignore its report.
+ */
+ if (ir->carrier_report_enabled && ir->learning_active &&
+ ir->pulse_tunit > 0) {
+ carrier_cycles = (*hi << 8 | *lo);
+ /*
+ * Adjust carrier cycle count by adding
+ * 1 missed count per pulse "on"
+ */
+ cycles_fix = ir->flags.rx2 == 2 ? ir->pulse_count : 0;
+ rawir.carrier_report = 1;
+ rawir.carrier = (1000000u / MCE_TIME_UNIT) *
+ (carrier_cycles + cycles_fix) /
+ ir->pulse_tunit;
+ dev_dbg(ir->dev, "RX carrier frequency %u Hz (pulse count = %u, cycles = %u, duration = %u, rx2 = %u)",
+ rawir.carrier, ir->pulse_count, carrier_cycles,
+ ir->pulse_tunit, ir->flags.rx2);
+ ir_raw_event_store(ir->rc, &rawir);
+ }
+ break;
+
+ /* 1-byte return value commands */
+ case MCE_RSP_EQIRTXPORTS:
+ ir->tx_mask = *hi;
+ break;
+ case MCE_RSP_EQIRRXPORTEN:
+ ir->learning_active = ((*hi & 0x02) == 0x02);
+ if (ir->rxports_active != *hi) {
+ dev_info(ir->dev, "%s-range (0x%x) receiver active",
+ ir->learning_active ? "short" : "long", *hi);
+ ir->rxports_active = *hi;
+ }
+ break;
+
+ /* No return value commands */
+ case MCE_RSP_CMD_ILLEGAL:
+ case MCE_RSP_TX_TIMEOUT:
+ ir->need_reset = true;
+ break;
+
+ default:
+ break;
+ }
+}
+
+static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
+{
+ struct ir_raw_event rawir = {};
+ bool event = false;
+ 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_cmd_datasize(ir->cmd, ir->buf_in[i]);
+ mceusb_dev_printdata(ir, ir->buf_in, buf_len, i - 1,
+ ir->rem + 2, false);
+ if (i + ir->rem < buf_len)
+ mceusb_handle_command(ir, &ir->buf_in[i - 1]);
+ 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);
+ if (unlikely(!rawir.duration)) {
+ dev_dbg(ir->dev, "nonsensical irdata %02x with duration 0",
+ ir->buf_in[i]);
+ break;
+ }
+ if (rawir.pulse) {
+ ir->pulse_tunit += rawir.duration;
+ ir->pulse_count++;
+ }
+ rawir.duration *= MCE_TIME_UNIT;
+
+ dev_dbg(ir->dev, "Storing %s %u us (%02x)",
+ rawir.pulse ? "pulse" : "space",
+ rawir.duration, ir->buf_in[i]);
+
+ if (ir_raw_event_store_with_filter(ir->rc, &rawir))
+ event = true;
+ break;
+ case CMD_DATA:
+ ir->rem--;
+ break;
+ case CMD_HEADER:
+ ir->cmd = ir->buf_in[i];
+ if ((ir->cmd == MCE_CMD_PORT_IR) ||
+ ((ir->cmd & MCE_PORT_MASK) !=
+ MCE_COMMAND_IRDATA)) {
+ /*
+ * got PORT_SYS, PORT_IR, or unknown
+ * command response prefix
+ */
+ ir->parser_state = SUBCMD;
+ continue;
+ }
+ /*
+ * got IR data prefix (0x80 + num_bytes)
+ * decode MCE packets of the form {0x83, AA, BB, CC}
+ * IR data packets can span USB messages
+ */
+ ir->rem = (ir->cmd & MCE_PACKET_LENGTH_MASK);
+ mceusb_dev_printdata(ir, ir->buf_in, buf_len,
+ i, ir->rem + 1, false);
+ if (ir->rem) {
+ ir->parser_state = PARSE_IRDATA;
+ } else {
+ struct ir_raw_event ev = {
+ .timeout = 1,
+ .duration = ir->rc->timeout
+ };
+
+ if (ir_raw_event_store_with_filter(ir->rc,
+ &ev))
+ event = true;
+ ir->pulse_tunit = 0;
+ ir->pulse_count = 0;
+ }
+ break;
+ }
+
+ if (ir->parser_state != CMD_HEADER && !ir->rem)
+ ir->parser_state = CMD_HEADER;
+ }
+
+ /*
+ * Accept IR data spanning multiple rx buffers.
+ * Reject MCE command response spanning multiple rx buffers.
+ */
+ if (ir->parser_state != PARSE_IRDATA || !ir->rem)
+ ir->parser_state = CMD_HEADER;
+
+ if (event) {
+ dev_dbg(ir->dev, "processed IR data");
+ ir_raw_event_handle(ir->rc);
+ }
+}
+
+static void mceusb_dev_recv(struct urb *urb)
+{
+ struct mceusb_dev *ir;
+
+ if (!urb)
+ return;
+
+ ir = urb->context;
+ if (!ir) {
+ usb_unlink_urb(urb);
+ return;
+ }
+
+ switch (urb->status) {
+ /* success */
+ case 0:
+ mceusb_process_ir_data(ir, urb->actual_length);
+ break;
+
+ case -ECONNRESET:
+ case -ENOENT:
+ case -EILSEQ:
+ case -EPROTO:
+ case -ESHUTDOWN:
+ usb_unlink_urb(urb);
+ return;
+
+ case -EPIPE:
+ dev_err(ir->dev, "Error: urb status = %d (RX HALT)",
+ urb->status);
+ mceusb_defer_kevent(ir, EVENT_RX_HALT);
+ return;
+
+ default:
+ dev_err(ir->dev, "Error: urb status = %d", urb->status);
+ break;
+ }
+
+ usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+static void mceusb_get_emulator_version(struct mceusb_dev *ir)
+{
+ /* If we get no reply or an illegal command reply, its ver 1, says MS */
+ ir->emver = 1;
+ mce_command_out(ir, GET_EMVER, sizeof(GET_EMVER));
+}
+
+static void mceusb_gen1_init(struct mceusb_dev *ir)
+{
+ int ret;
+ struct device *dev = ir->dev;
+ char data[USB_CTRL_MSG_SZ];
+
+ /*
+ * 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_recv(ir->usbdev, 0, USB_REQ_SET_ADDRESS,
+ USB_DIR_IN | USB_TYPE_VENDOR,
+ 0, 0, data, USB_CTRL_MSG_SZ, 3000,
+ GFP_KERNEL);
+ dev_dbg(dev, "set address - ret = %d", ret);
+ dev_dbg(dev, "set address - data[0] = %d, data[1] = %d",
+ data[0], data[1]);
+
+ /* set feature: bit rate 38400 bps */
+ ret = usb_control_msg_send(ir->usbdev, 0,
+ USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
+ 0xc04e, 0x0000, NULL, 0, 3000, GFP_KERNEL);
+
+ dev_dbg(dev, "set feature - ret = %d", ret);
+
+ /* bRequest 4: set char length to 8 bits */
+ ret = usb_control_msg_send(ir->usbdev, 0,
+ 4, USB_TYPE_VENDOR,
+ 0x0808, 0x0000, NULL, 0, 3000, GFP_KERNEL);
+ dev_dbg(dev, "set char length - retB = %d", ret);
+
+ /* bRequest 2: set handshaking to use DTR/DSR */
+ ret = usb_control_msg_send(ir->usbdev, 0,
+ 2, USB_TYPE_VENDOR,
+ 0x0000, 0x0100, NULL, 0, 3000, GFP_KERNEL);
+ dev_dbg(dev, "set handshake - retC = %d", ret);
+
+ /* device resume */
+ mce_command_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME));
+
+ /* get hw/sw revision? */
+ mce_command_out(ir, GET_REVISION, sizeof(GET_REVISION));
+}
+
+static void mceusb_gen2_init(struct mceusb_dev *ir)
+{
+ /* device resume */
+ mce_command_out(ir, DEVICE_RESUME, sizeof(DEVICE_RESUME));
+
+ /* get wake version (protocol, key, address) */
+ mce_command_out(ir, GET_WAKEVERSION, sizeof(GET_WAKEVERSION));
+
+ /* unknown what this one actually returns... */
+ mce_command_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2));
+}
+
+static void mceusb_get_parameters(struct mceusb_dev *ir)
+{
+ int i;
+ unsigned char cmdbuf[3] = { MCE_CMD_PORT_SYS,
+ MCE_CMD_GETPORTSTATUS, 0x00 };
+
+ /* defaults, if the hardware doesn't support querying */
+ ir->num_txports = 2;
+ ir->num_rxports = 2;
+
+ /* get number of tx and rx ports */
+ mce_command_out(ir, GET_NUM_PORTS, sizeof(GET_NUM_PORTS));
+
+ /* get the carrier and frequency */
+ mce_command_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ));
+
+ if (ir->num_txports && !ir->flags.no_tx)
+ /* get the transmitter bitmask */
+ mce_command_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));
+
+ /* get receiver timeout value */
+ mce_command_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
+
+ /* get receiver sensor setting */
+ mce_command_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR));
+
+ for (i = 0; i < ir->num_txports; i++) {
+ cmdbuf[2] = i;
+ mce_command_out(ir, cmdbuf, sizeof(cmdbuf));
+ }
+}
+
+static void mceusb_flash_led(struct mceusb_dev *ir)
+{
+ if (ir->emver < 2)
+ return;
+
+ mce_command_out(ir, FLASH_LED, sizeof(FLASH_LED));
+}
+
+/*
+ * Workqueue function
+ * for resetting or recovering device after occurrence of error events
+ * specified in ir->kevent bit field.
+ * Function runs (via schedule_work()) in non-interrupt context, for
+ * calls here (such as usb_clear_halt()) requiring non-interrupt context.
+ */
+static void mceusb_deferred_kevent(struct work_struct *work)
+{
+ struct mceusb_dev *ir =
+ container_of(work, struct mceusb_dev, kevent);
+ int status;
+
+ dev_err(ir->dev, "kevent handler called (flags 0x%lx)",
+ ir->kevent_flags);
+
+ if (test_bit(EVENT_RST_PEND, &ir->kevent_flags)) {
+ dev_err(ir->dev, "kevent handler canceled pending USB Reset Device");
+ return;
+ }
+
+ if (test_bit(EVENT_RX_HALT, &ir->kevent_flags)) {
+ usb_unlink_urb(ir->urb_in);
+ status = usb_clear_halt(ir->usbdev, ir->pipe_in);
+ dev_err(ir->dev, "rx clear halt status = %d", status);
+ if (status < 0) {
+ /*
+ * Unable to clear RX halt/stall.
+ * Will need to call usb_reset_device().
+ */
+ dev_err(ir->dev,
+ "stuck RX HALT state requires USB Reset Device to clear");
+ usb_queue_reset_device(ir->usbintf);
+ set_bit(EVENT_RST_PEND, &ir->kevent_flags);
+ clear_bit(EVENT_RX_HALT, &ir->kevent_flags);
+
+ /* Cancel all other error events and handlers */
+ clear_bit(EVENT_TX_HALT, &ir->kevent_flags);
+ return;
+ }
+ clear_bit(EVENT_RX_HALT, &ir->kevent_flags);
+ status = usb_submit_urb(ir->urb_in, GFP_KERNEL);
+ if (status < 0) {
+ dev_err(ir->dev, "rx unhalt submit urb error = %d",
+ status);
+ }
+ }
+
+ if (test_bit(EVENT_TX_HALT, &ir->kevent_flags)) {
+ status = usb_clear_halt(ir->usbdev, ir->pipe_out);
+ dev_err(ir->dev, "tx clear halt status = %d", status);
+ if (status < 0) {
+ /*
+ * Unable to clear TX halt/stall.
+ * Will need to call usb_reset_device().
+ */
+ dev_err(ir->dev,
+ "stuck TX HALT state requires USB Reset Device to clear");
+ usb_queue_reset_device(ir->usbintf);
+ set_bit(EVENT_RST_PEND, &ir->kevent_flags);
+ clear_bit(EVENT_TX_HALT, &ir->kevent_flags);
+
+ /* Cancel all other error events and handlers */
+ clear_bit(EVENT_RX_HALT, &ir->kevent_flags);
+ return;
+ }
+ clear_bit(EVENT_TX_HALT, &ir->kevent_flags);
+ }
+}
+
+static struct rc_dev *mceusb_init_rc_dev(struct mceusb_dev *ir)
+{
+ struct usb_device *udev = ir->usbdev;
+ struct device *dev = ir->dev;
+ struct rc_dev *rc;
+ int ret;
+
+ rc = rc_allocate_device(RC_DRIVER_IR_RAW);
+ if (!rc) {
+ dev_err(dev, "remote dev allocation failed");
+ goto out;
+ }
+
+ snprintf(ir->name, sizeof(ir->name), "%s (%04x:%04x)",
+ mceusb_model[ir->model].name ?
+ mceusb_model[ir->model].name :
+ "Media Center Ed. eHome Infrared Remote Transceiver",
+ le16_to_cpu(ir->usbdev->descriptor.idVendor),
+ le16_to_cpu(ir->usbdev->descriptor.idProduct));
+
+ usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys));
+
+ rc->device_name = ir->name;
+ rc->input_phys = ir->phys;
+ usb_to_input_id(ir->usbdev, &rc->input_id);
+ rc->dev.parent = dev;
+ rc->priv = ir;
+ rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
+ rc->rx_resolution = MCE_TIME_UNIT;
+ rc->min_timeout = MCE_TIME_UNIT;
+ rc->timeout = MS_TO_US(100);
+ if (!mceusb_model[ir->model].broken_irtimeout) {
+ rc->s_timeout = mceusb_set_timeout;
+ rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT;
+ } else {
+ /*
+ * If we can't set the timeout using CMD_SETIRTIMEOUT, we can
+ * rely on software timeouts for timeouts < 100ms.
+ */
+ rc->max_timeout = rc->timeout;
+ }
+ if (!ir->flags.no_tx) {
+ rc->s_tx_mask = mceusb_set_tx_mask;
+ rc->s_tx_carrier = mceusb_set_tx_carrier;
+ rc->tx_ir = mceusb_tx_ir;
+ }
+ if (ir->flags.rx2 > 0) {
+ rc->s_wideband_receiver = mceusb_set_rx_wideband;
+ rc->s_carrier_report = mceusb_set_rx_carrier_report;
+ }
+ rc->driver_name = DRIVER_NAME;
+
+ switch (le16_to_cpu(udev->descriptor.idVendor)) {
+ case VENDOR_HAUPPAUGE:
+ rc->map_name = RC_MAP_HAUPPAUGE;
+ break;
+ case VENDOR_PCTV:
+ rc->map_name = RC_MAP_PINNACLE_PCTV_HD;
+ break;
+ default:
+ rc->map_name = RC_MAP_RC6_MCE;
+ }
+ if (mceusb_model[ir->model].rc_map)
+ rc->map_name = mceusb_model[ir->model].rc_map;
+
+ ret = rc_register_device(rc);
+ if (ret < 0) {
+ dev_err(dev, "remote dev registration failed");
+ goto out;
+ }
+
+ return rc;
+
+out:
+ rc_free_device(rc);
+ return NULL;
+}
+
+static int 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, res;
+ char buf[63], name[128] = "";
+ enum mceusb_model_type model = id->driver_info;
+ bool is_gen3;
+ bool is_microsoft_gen1;
+ bool tx_mask_normal;
+ int ir_intfnum;
+
+ dev_dbg(&intf->dev, "%s called", __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;
+ ir_intfnum = mceusb_model[model].ir_intfnum;
+
+ /* There are multi-function devices with non-IR interfaces */
+ if (idesc->desc.bInterfaceNumber != ir_intfnum)
+ 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) {
+ if (usb_endpoint_is_bulk_in(ep)) {
+ ep_in = ep;
+ dev_dbg(&intf->dev, "acceptable bulk inbound endpoint found\n");
+ } else if (usb_endpoint_is_int_in(ep)) {
+ ep_in = ep;
+ ep_in->bInterval = 1;
+ dev_dbg(&intf->dev, "acceptable interrupt inbound endpoint found\n");
+ }
+ }
+
+ if (ep_out == NULL) {
+ if (usb_endpoint_is_bulk_out(ep)) {
+ ep_out = ep;
+ dev_dbg(&intf->dev, "acceptable bulk outbound endpoint found\n");
+ } else if (usb_endpoint_is_int_out(ep)) {
+ ep_out = ep;
+ ep_out->bInterval = 1;
+ dev_dbg(&intf->dev, "acceptable interrupt outbound endpoint found\n");
+ }
+ }
+ }
+ if (!ep_in || !ep_out) {
+ dev_dbg(&intf->dev, "required endpoints not found\n");
+ return -ENODEV;
+ }
+
+ if (usb_endpoint_xfer_int(ep_in))
+ pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
+ else
+ pipe = usb_rcvbulkpipe(dev, ep_in->bEndpointAddress);
+ maxp = usb_maxpacket(dev, pipe);
+
+ ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
+ if (!ir)
+ goto mem_alloc_fail;
+
+ ir->pipe_in = pipe;
+ ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_KERNEL, &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->usbintf = intf;
+ ir->usbdev = usb_get_dev(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->flags.rx2 = mceusb_model[model].rx2;
+ ir->model = model;
+
+ /* Saving usb interface data for use by the transmitter routine */
+ ir->usb_ep_out = ep_out;
+ if (usb_endpoint_xfer_int(ep_out))
+ ir->pipe_out = usb_sndintpipe(ir->usbdev,
+ ep_out->bEndpointAddress);
+ else
+ ir->pipe_out = usb_sndbulkpipe(ir->usbdev,
+ ep_out->bEndpointAddress);
+
+ if (dev->descriptor.iManufacturer
+ && usb_string(dev, dev->descriptor.iManufacturer,
+ buf, sizeof(buf)) > 0)
+ strscpy(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);
+
+ /*
+ * Initialize async USB error handler before registering
+ * or activating any mceusb RX and TX functions
+ */
+ INIT_WORK(&ir->kevent, mceusb_deferred_kevent);
+
+ ir->rc = mceusb_init_rc_dev(ir);
+ if (!ir->rc)
+ goto rc_dev_fail;
+
+ /* wire up inbound data handler */
+ if (usb_endpoint_xfer_int(ep_in))
+ usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp,
+ mceusb_dev_recv, ir, ep_in->bInterval);
+ else
+ usb_fill_bulk_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp,
+ mceusb_dev_recv, ir);
+
+ ir->urb_in->transfer_dma = ir->dma_in;
+ ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+ /* flush buffers on the device */
+ dev_dbg(&intf->dev, "Flushing receive buffers");
+ res = usb_submit_urb(ir->urb_in, GFP_KERNEL);
+ if (res)
+ dev_err(&intf->dev, "failed to flush buffers: %d", res);
+
+ /* figure out which firmware/emulator version this hardware has */
+ mceusb_get_emulator_version(ir);
+
+ /* initialize device */
+ if (ir->flags.microsoft_gen1)
+ mceusb_gen1_init(ir);
+ else if (!is_gen3)
+ mceusb_gen2_init(ir);
+
+ mceusb_get_parameters(ir);
+
+ mceusb_flash_led(ir);
+
+ if (!ir->flags.no_tx)
+ mceusb_set_tx_mask(ir->rc, MCE_DEFAULT_TX_MASK);
+
+ usb_set_intfdata(intf, ir);
+
+ /* enable wake via this device */
+ device_set_wakeup_capable(ir->dev, true);
+ device_set_wakeup_enable(ir->dev, true);
+
+ dev_info(&intf->dev, "Registered %s with mce emulator interface version %x",
+ name, ir->emver);
+ dev_info(&intf->dev, "%x tx ports (0x%x cabled) and %x rx sensors (0x%x active)",
+ ir->num_txports, ir->txports_cabled,
+ ir->num_rxports, ir->rxports_active);
+
+ return 0;
+
+ /* Error-handling path */
+rc_dev_fail:
+ cancel_work_sync(&ir->kevent);
+ usb_put_dev(ir->usbdev);
+ usb_kill_urb(ir->urb_in);
+ 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!", __func__);
+
+ return -ENOMEM;
+}
+
+
+static void mceusb_dev_disconnect(struct usb_interface *intf)
+{
+ struct usb_device *dev = interface_to_usbdev(intf);
+ struct mceusb_dev *ir = usb_get_intfdata(intf);
+
+ dev_dbg(&intf->dev, "%s called", __func__);
+
+ usb_set_intfdata(intf, NULL);
+
+ if (!ir)
+ return;
+
+ ir->usbdev = NULL;
+ cancel_work_sync(&ir->kevent);
+ rc_unregister_device(ir->rc);
+ 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);
+ usb_put_dev(dev);
+
+ 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");
+ 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");
+ 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
+};
+
+module_usb_driver(mceusb_dev_driver);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(usb, mceusb_dev_table);