123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299 |
- /*
- * USB RedRat3 IR Transceiver rc-core driver
- *
- * Copyright (c) 2011 by Jarod Wilson <jarod@redhat.com>
- * based heavily on the work of Stephen Cox, with additional
- * help from RedRat Ltd.
- *
- * This driver began life based an an old version of the first-generation
- * lirc_mceusb driver from the lirc 0.7.2 distribution. It was then
- * significantly rewritten by Stephen Cox with the aid of RedRat Ltd's
- * Chris Dodge.
- *
- * The driver was then ported to rc-core and significantly rewritten again,
- * by Jarod, using the in-kernel mceusb driver as a guide, after an initial
- * port effort was started by Stephen.
- *
- * TODO LIST:
- * - fix lirc not showing repeats properly
- * --
- *
- * The RedRat3 is a USB transceiver with both send & receive,
- * with 2 separate sensors available for receive to enable
- * both good long range reception for general use, and good
- * short range reception when required for learning a signal.
- *
- * http://www.redrat.co.uk/
- *
- * It uses its own little protocol to communicate, the required
- * parts of which are embedded within this driver.
- * --
- *
- * 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/usb.h>
- #include <linux/usb/input.h>
- #include <media/rc-core.h>
- /* Driver Information */
- #define DRIVER_VERSION "0.70"
- #define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>"
- #define DRIVER_AUTHOR2 "The Dweller, Stephen Cox"
- #define DRIVER_DESC "RedRat3 USB IR Transceiver Driver"
- #define DRIVER_NAME "redrat3"
- /* module parameters */
- #ifdef CONFIG_USB_DEBUG
- static int debug = 1;
- #else
- static int debug;
- #endif
- #define RR3_DEBUG_STANDARD 0x1
- #define RR3_DEBUG_FUNCTION_TRACE 0x2
- #define rr3_dbg(dev, fmt, ...) \
- do { \
- if (debug & RR3_DEBUG_STANDARD) \
- dev_info(dev, fmt, ## __VA_ARGS__); \
- } while (0)
- #define rr3_ftr(dev, fmt, ...) \
- do { \
- if (debug & RR3_DEBUG_FUNCTION_TRACE) \
- dev_info(dev, fmt, ## __VA_ARGS__); \
- } while (0)
- /* bulk data transfer types */
- #define RR3_ERROR 0x01
- #define RR3_MOD_SIGNAL_IN 0x20
- #define RR3_MOD_SIGNAL_OUT 0x21
- /* Get the RR firmware version */
- #define RR3_FW_VERSION 0xb1
- #define RR3_FW_VERSION_LEN 64
- /* Send encoded signal bulk-sent earlier*/
- #define RR3_TX_SEND_SIGNAL 0xb3
- #define RR3_SET_IR_PARAM 0xb7
- #define RR3_GET_IR_PARAM 0xb8
- /* Blink the red LED on the device */
- #define RR3_BLINK_LED 0xb9
- /* Read serial number of device */
- #define RR3_READ_SER_NO 0xba
- #define RR3_SER_NO_LEN 4
- /* Start capture with the RC receiver */
- #define RR3_RC_DET_ENABLE 0xbb
- /* Stop capture with the RC receiver */
- #define RR3_RC_DET_DISABLE 0xbc
- /* Return the status of RC detector capture */
- #define RR3_RC_DET_STATUS 0xbd
- /* Reset redrat */
- #define RR3_RESET 0xa0
- /* Max number of lengths in the signal. */
- #define RR3_IR_IO_MAX_LENGTHS 0x01
- /* Periods to measure mod. freq. */
- #define RR3_IR_IO_PERIODS_MF 0x02
- /* Size of memory for main signal data */
- #define RR3_IR_IO_SIG_MEM_SIZE 0x03
- /* Delta value when measuring lengths */
- #define RR3_IR_IO_LENGTH_FUZZ 0x04
- /* Timeout for end of signal detection */
- #define RR3_IR_IO_SIG_TIMEOUT 0x05
- /* Minumum value for pause recognition. */
- #define RR3_IR_IO_MIN_PAUSE 0x06
- /* Clock freq. of EZ-USB chip */
- #define RR3_CLK 24000000
- /* Clock periods per timer count */
- #define RR3_CLK_PER_COUNT 12
- /* (RR3_CLK / RR3_CLK_PER_COUNT) */
- #define RR3_CLK_CONV_FACTOR 2000000
- /* USB bulk-in IR data endpoint address */
- #define RR3_BULK_IN_EP_ADDR 0x82
- /* Raw Modulated signal data value offsets */
- #define RR3_PAUSE_OFFSET 0
- #define RR3_FREQ_COUNT_OFFSET 4
- #define RR3_NUM_PERIOD_OFFSET 6
- #define RR3_MAX_LENGTHS_OFFSET 8
- #define RR3_NUM_LENGTHS_OFFSET 9
- #define RR3_MAX_SIGS_OFFSET 10
- #define RR3_NUM_SIGS_OFFSET 12
- #define RR3_REPEATS_OFFSET 14
- /* Size of the fixed-length portion of the signal */
- #define RR3_HEADER_LENGTH 15
- #define RR3_DRIVER_MAXLENS 128
- #define RR3_MAX_SIG_SIZE 512
- #define RR3_MAX_BUF_SIZE \
- ((2 * RR3_HEADER_LENGTH) + RR3_DRIVER_MAXLENS + RR3_MAX_SIG_SIZE)
- #define RR3_TIME_UNIT 50
- #define RR3_END_OF_SIGNAL 0x7f
- #define RR3_TX_HEADER_OFFSET 4
- #define RR3_TX_TRAILER_LEN 2
- #define RR3_RX_MIN_TIMEOUT 5
- #define RR3_RX_MAX_TIMEOUT 2000
- /* The 8051's CPUCS Register address */
- #define RR3_CPUCS_REG_ADDR 0x7f92
- #define USB_RR3USB_VENDOR_ID 0x112a
- #define USB_RR3USB_PRODUCT_ID 0x0001
- #define USB_RR3IIUSB_PRODUCT_ID 0x0005
- /* table of devices that work with this driver */
- static struct usb_device_id redrat3_dev_table[] = {
- /* Original version of the RedRat3 */
- {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3USB_PRODUCT_ID)},
- /* Second Version/release of the RedRat3 - RetRat3-II */
- {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3IIUSB_PRODUCT_ID)},
- {} /* Terminating entry */
- };
- /* Structure to hold all of our device specific stuff */
- struct redrat3_dev {
- /* core device bits */
- struct rc_dev *rc;
- struct device *dev;
- /* save off the usb device pointer */
- struct usb_device *udev;
- /* the receive endpoint */
- struct usb_endpoint_descriptor *ep_in;
- /* the buffer to receive data */
- unsigned char *bulk_in_buf;
- /* urb used to read ir data */
- struct urb *read_urb;
- /* the send endpoint */
- struct usb_endpoint_descriptor *ep_out;
- /* the buffer to send data */
- unsigned char *bulk_out_buf;
- /* the urb used to send data */
- struct urb *write_urb;
- /* usb dma */
- dma_addr_t dma_in;
- dma_addr_t dma_out;
- /* locks this structure */
- struct mutex lock;
- /* rx signal timeout timer */
- struct timer_list rx_timeout;
- u32 hw_timeout;
- /* is the detector enabled*/
- bool det_enabled;
- /* Is the device currently transmitting?*/
- bool transmitting;
- /* store for current packet */
- char pbuf[RR3_MAX_BUF_SIZE];
- u16 pktlen;
- u16 pkttype;
- u16 bytes_read;
- /* indicate whether we are going to reprocess
- * the USB callback with a bigger buffer */
- int buftoosmall;
- char *datap;
- u32 carrier;
- char name[128];
- char phys[64];
- };
- /* All incoming data buffers adhere to a very specific data format */
- struct redrat3_signal_header {
- u16 length; /* Length of data being transferred */
- u16 transfer_type; /* Type of data transferred */
- u32 pause; /* Pause between main and repeat signals */
- u16 mod_freq_count; /* Value of timer on mod. freq. measurement */
- u16 no_periods; /* No. of periods over which mod. freq. is measured */
- u8 max_lengths; /* Max no. of lengths (i.e. size of array) */
- u8 no_lengths; /* Actual no. of elements in lengths array */
- u16 max_sig_size; /* Max no. of values in signal data array */
- u16 sig_size; /* Acuto no. of values in signal data array */
- u8 no_repeats; /* No. of repeats of repeat signal section */
- /* Here forward is the lengths and signal data */
- };
- static void redrat3_dump_signal_header(struct redrat3_signal_header *header)
- {
- pr_info("%s:\n", __func__);
- pr_info(" * length: %u, transfer_type: 0x%02x\n",
- header->length, header->transfer_type);
- pr_info(" * pause: %u, freq_count: %u, no_periods: %u\n",
- header->pause, header->mod_freq_count, header->no_periods);
- pr_info(" * lengths: %u (max: %u)\n",
- header->no_lengths, header->max_lengths);
- pr_info(" * sig_size: %u (max: %u)\n",
- header->sig_size, header->max_sig_size);
- pr_info(" * repeats: %u\n", header->no_repeats);
- }
- static void redrat3_dump_signal_data(char *buffer, u16 len)
- {
- int offset, i;
- char *data_vals;
- pr_info("%s:", __func__);
- offset = RR3_TX_HEADER_OFFSET + RR3_HEADER_LENGTH
- + (RR3_DRIVER_MAXLENS * sizeof(u16));
- /* read RR3_DRIVER_MAXLENS from ctrl msg */
- data_vals = buffer + offset;
- for (i = 0; i < len; i++) {
- if (i % 10 == 0)
- pr_cont("\n * ");
- pr_cont("%02x ", *data_vals++);
- }
- pr_cont("\n");
- }
- /*
- * redrat3_issue_async
- *
- * Issues an async read to the ir data in port..
- * sets the callback to be redrat3_handle_async
- */
- static void redrat3_issue_async(struct redrat3_dev *rr3)
- {
- int res;
- rr3_ftr(rr3->dev, "Entering %s\n", __func__);
- memset(rr3->bulk_in_buf, 0, rr3->ep_in->wMaxPacketSize);
- res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC);
- if (res)
- rr3_dbg(rr3->dev, "%s: receive request FAILED! "
- "(res %d, len %d)\n", __func__, res,
- rr3->read_urb->transfer_buffer_length);
- }
- static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code)
- {
- if (!rr3->transmitting && (code != 0x40))
- dev_info(rr3->dev, "fw error code 0x%02x: ", code);
- switch (code) {
- case 0x00:
- pr_cont("No Error\n");
- break;
- /* Codes 0x20 through 0x2f are IR Firmware Errors */
- case 0x20:
- pr_cont("Initial signal pulse not long enough "
- "to measure carrier frequency\n");
- break;
- case 0x21:
- pr_cont("Not enough length values allocated for signal\n");
- break;
- case 0x22:
- pr_cont("Not enough memory allocated for signal data\n");
- break;
- case 0x23:
- pr_cont("Too many signal repeats\n");
- break;
- case 0x28:
- pr_cont("Insufficient memory available for IR signal "
- "data memory allocation\n");
- break;
- case 0x29:
- pr_cont("Insufficient memory available "
- "for IrDa signal data memory allocation\n");
- break;
- /* Codes 0x30 through 0x3f are USB Firmware Errors */
- case 0x30:
- pr_cont("Insufficient memory available for bulk "
- "transfer structure\n");
- break;
- /*
- * Other error codes... These are primarily errors that can occur in
- * the control messages sent to the redrat
- */
- case 0x40:
- if (!rr3->transmitting)
- pr_cont("Signal capture has been terminated\n");
- break;
- case 0x41:
- pr_cont("Attempt to set/get and unknown signal I/O "
- "algorithm parameter\n");
- break;
- case 0x42:
- pr_cont("Signal capture already started\n");
- break;
- default:
- pr_cont("Unknown Error\n");
- break;
- }
- }
- static u32 redrat3_val_to_mod_freq(struct redrat3_signal_header *ph)
- {
- u32 mod_freq = 0;
- if (ph->mod_freq_count != 0)
- mod_freq = (RR3_CLK * ph->no_periods) /
- (ph->mod_freq_count * RR3_CLK_PER_COUNT);
- return mod_freq;
- }
- /* this function scales down the figures for the same result... */
- static u32 redrat3_len_to_us(u32 length)
- {
- u32 biglen = length * 1000;
- u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000;
- u32 result = (u32) (biglen / divisor);
- /* don't allow zero lengths to go back, breaks lirc */
- return result ? result : 1;
- }
- /*
- * convert us back into redrat3 lengths
- *
- * length * 1000 length * 1000000
- * ------------- = ---------------- = micro
- * rr3clk / 1000 rr3clk
- * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000
- * ----- = 4 ----- = 6 -------------- = len ---------------------
- * 3 2 1000000 1000
- */
- static u32 redrat3_us_to_len(u32 microsec)
- {
- u32 result;
- u32 divisor;
- microsec &= IR_MAX_DURATION;
- divisor = (RR3_CLK_CONV_FACTOR / 1000);
- result = (u32)(microsec * divisor) / 1000;
- /* don't allow zero lengths to go back, breaks lirc */
- return result ? result : 1;
- }
- /* timer callback to send reset event */
- static void redrat3_rx_timeout(unsigned long data)
- {
- struct redrat3_dev *rr3 = (struct redrat3_dev *)data;
- rr3_dbg(rr3->dev, "calling ir_raw_event_reset\n");
- ir_raw_event_reset(rr3->rc);
- }
- static void redrat3_process_ir_data(struct redrat3_dev *rr3)
- {
- DEFINE_IR_RAW_EVENT(rawir);
- struct redrat3_signal_header header;
- struct device *dev;
- int i, trailer = 0;
- unsigned long delay;
- u32 mod_freq, single_len;
- u16 *len_vals;
- u8 *data_vals;
- u32 tmp32;
- u16 tmp16;
- char *sig_data;
- if (!rr3) {
- pr_err("%s called with no context!\n", __func__);
- return;
- }
- rr3_ftr(rr3->dev, "Entered %s\n", __func__);
- dev = rr3->dev;
- sig_data = rr3->pbuf;
- header.length = rr3->pktlen;
- header.transfer_type = rr3->pkttype;
- /* Sanity check */
- if (!(header.length >= RR3_HEADER_LENGTH))
- dev_warn(dev, "read returned less than rr3 header len\n");
- /* Make sure we reset the IR kfifo after a bit of inactivity */
- delay = usecs_to_jiffies(rr3->hw_timeout);
- mod_timer(&rr3->rx_timeout, jiffies + delay);
- memcpy(&tmp32, sig_data + RR3_PAUSE_OFFSET, sizeof(tmp32));
- header.pause = be32_to_cpu(tmp32);
- memcpy(&tmp16, sig_data + RR3_FREQ_COUNT_OFFSET, sizeof(tmp16));
- header.mod_freq_count = be16_to_cpu(tmp16);
- memcpy(&tmp16, sig_data + RR3_NUM_PERIOD_OFFSET, sizeof(tmp16));
- header.no_periods = be16_to_cpu(tmp16);
- header.max_lengths = sig_data[RR3_MAX_LENGTHS_OFFSET];
- header.no_lengths = sig_data[RR3_NUM_LENGTHS_OFFSET];
- memcpy(&tmp16, sig_data + RR3_MAX_SIGS_OFFSET, sizeof(tmp16));
- header.max_sig_size = be16_to_cpu(tmp16);
- memcpy(&tmp16, sig_data + RR3_NUM_SIGS_OFFSET, sizeof(tmp16));
- header.sig_size = be16_to_cpu(tmp16);
- header.no_repeats= sig_data[RR3_REPEATS_OFFSET];
- if (debug) {
- redrat3_dump_signal_header(&header);
- redrat3_dump_signal_data(sig_data, header.sig_size);
- }
- mod_freq = redrat3_val_to_mod_freq(&header);
- rr3_dbg(dev, "Got mod_freq of %u\n", mod_freq);
- /* Here we pull out the 'length' values from the signal */
- len_vals = (u16 *)(sig_data + RR3_HEADER_LENGTH);
- data_vals = sig_data + RR3_HEADER_LENGTH +
- (header.max_lengths * sizeof(u16));
- /* process each rr3 encoded byte into an int */
- for (i = 0; i < header.sig_size; i++) {
- u16 val = len_vals[data_vals[i]];
- single_len = redrat3_len_to_us((u32)be16_to_cpu(val));
- /* we should always get pulse/space/pulse/space samples */
- if (i % 2)
- rawir.pulse = false;
- else
- rawir.pulse = true;
- rawir.duration = US_TO_NS(single_len);
- /* Save initial pulse length to fudge trailer */
- if (i == 0)
- trailer = rawir.duration;
- /* cap the value to IR_MAX_DURATION */
- rawir.duration &= IR_MAX_DURATION;
- rr3_dbg(dev, "storing %s with duration %d (i: %d)\n",
- rawir.pulse ? "pulse" : "space", rawir.duration, i);
- ir_raw_event_store_with_filter(rr3->rc, &rawir);
- }
- /* add a trailing space, if need be */
- if (i % 2) {
- rawir.pulse = false;
- /* this duration is made up, and may not be ideal... */
- if (trailer < US_TO_NS(1000))
- rawir.duration = US_TO_NS(2800);
- else
- rawir.duration = trailer;
- rr3_dbg(dev, "storing trailing space with duration %d\n",
- rawir.duration);
- ir_raw_event_store_with_filter(rr3->rc, &rawir);
- }
- rr3_dbg(dev, "calling ir_raw_event_handle\n");
- ir_raw_event_handle(rr3->rc);
- return;
- }
- /* Util fn to send rr3 cmds */
- static u8 redrat3_send_cmd(int cmd, struct redrat3_dev *rr3)
- {
- struct usb_device *udev;
- u8 *data;
- int res;
- data = kzalloc(sizeof(u8), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
- udev = rr3->udev;
- res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x0000, 0x0000, data, sizeof(u8), HZ * 10);
- if (res < 0) {
- dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d",
- __func__, res, *data);
- res = -EIO;
- } else
- res = (u8)data[0];
- kfree(data);
- return res;
- }
- /* Enables the long range detector and starts async receive */
- static int redrat3_enable_detector(struct redrat3_dev *rr3)
- {
- struct device *dev = rr3->dev;
- u8 ret;
- rr3_ftr(dev, "Entering %s\n", __func__);
- ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3);
- if (ret != 0)
- dev_dbg(dev, "%s: unexpected ret of %d\n",
- __func__, ret);
- ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
- if (ret != 1) {
- dev_err(dev, "%s: detector status: %d, should be 1\n",
- __func__, ret);
- return -EIO;
- }
- rr3->det_enabled = true;
- redrat3_issue_async(rr3);
- return 0;
- }
- /* Disables the rr3 long range detector */
- static void redrat3_disable_detector(struct redrat3_dev *rr3)
- {
- struct device *dev = rr3->dev;
- u8 ret;
- rr3_ftr(dev, "Entering %s\n", __func__);
- ret = redrat3_send_cmd(RR3_RC_DET_DISABLE, rr3);
- if (ret != 0)
- dev_err(dev, "%s: failure!\n", __func__);
- ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
- if (ret != 0)
- dev_warn(dev, "%s: detector status: %d, should be 0\n",
- __func__, ret);
- rr3->det_enabled = false;
- }
- static inline void redrat3_delete(struct redrat3_dev *rr3,
- struct usb_device *udev)
- {
- rr3_ftr(rr3->dev, "%s cleaning up\n", __func__);
- usb_kill_urb(rr3->read_urb);
- usb_kill_urb(rr3->write_urb);
- usb_free_urb(rr3->read_urb);
- usb_free_urb(rr3->write_urb);
- usb_free_coherent(udev, rr3->ep_in->wMaxPacketSize,
- rr3->bulk_in_buf, rr3->dma_in);
- usb_free_coherent(udev, rr3->ep_out->wMaxPacketSize,
- rr3->bulk_out_buf, rr3->dma_out);
- kfree(rr3);
- }
- static u32 redrat3_get_timeout(struct redrat3_dev *rr3)
- {
- u32 *tmp;
- u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */
- int len, ret, pipe;
- len = sizeof(*tmp);
- tmp = kzalloc(len, GFP_KERNEL);
- if (!tmp) {
- dev_warn(rr3->dev, "Memory allocation faillure\n");
- return timeout;
- }
- pipe = usb_rcvctrlpipe(rr3->udev, 0);
- ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5);
- if (ret != len) {
- dev_warn(rr3->dev, "Failed to read timeout from hardware\n");
- return timeout;
- }
- timeout = redrat3_len_to_us(be32_to_cpu(*tmp));
- rr3_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000);
- return timeout;
- }
- static void redrat3_reset(struct redrat3_dev *rr3)
- {
- struct usb_device *udev = rr3->udev;
- struct device *dev = rr3->dev;
- int rc, rxpipe, txpipe;
- u8 *val;
- int len = sizeof(u8);
- rr3_ftr(dev, "Entering %s\n", __func__);
- rxpipe = usb_rcvctrlpipe(udev, 0);
- txpipe = usb_sndctrlpipe(udev, 0);
- val = kzalloc(len, GFP_KERNEL);
- if (!val) {
- dev_err(dev, "Memory allocation failure\n");
- return;
- }
- *val = 0x01;
- rc = usb_control_msg(udev, rxpipe, RR3_RESET,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25);
- rr3_dbg(dev, "reset returned 0x%02x\n", rc);
- *val = 5;
- rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
- RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25);
- rr3_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc);
- *val = RR3_DRIVER_MAXLENS;
- rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
- RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25);
- rr3_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc);
- kfree(val);
- }
- static void redrat3_get_firmware_rev(struct redrat3_dev *rr3)
- {
- int rc = 0;
- char *buffer;
- rr3_ftr(rr3->dev, "Entering %s\n", __func__);
- buffer = kzalloc(sizeof(char) * (RR3_FW_VERSION_LEN + 1), GFP_KERNEL);
- if (!buffer) {
- dev_err(rr3->dev, "Memory allocation failure\n");
- return;
- }
- rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0),
- RR3_FW_VERSION,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5);
- if (rc >= 0)
- dev_info(rr3->dev, "Firmware rev: %s", buffer);
- else
- dev_err(rr3->dev, "Problem fetching firmware ID\n");
- kfree(buffer);
- rr3_ftr(rr3->dev, "Exiting %s\n", __func__);
- }
- static void redrat3_read_packet_start(struct redrat3_dev *rr3, int len)
- {
- u16 tx_error;
- u16 hdrlen;
- rr3_ftr(rr3->dev, "Entering %s\n", __func__);
- /* grab the Length and type of transfer */
- memcpy(&(rr3->pktlen), (unsigned char *) rr3->bulk_in_buf,
- sizeof(rr3->pktlen));
- memcpy(&(rr3->pkttype), ((unsigned char *) rr3->bulk_in_buf +
- sizeof(rr3->pktlen)),
- sizeof(rr3->pkttype));
- /*data needs conversion to know what its real values are*/
- rr3->pktlen = be16_to_cpu(rr3->pktlen);
- rr3->pkttype = be16_to_cpu(rr3->pkttype);
- switch (rr3->pkttype) {
- case RR3_ERROR:
- memcpy(&tx_error, ((unsigned char *)rr3->bulk_in_buf
- + (sizeof(rr3->pktlen) + sizeof(rr3->pkttype))),
- sizeof(tx_error));
- tx_error = be16_to_cpu(tx_error);
- redrat3_dump_fw_error(rr3, tx_error);
- break;
- case RR3_MOD_SIGNAL_IN:
- hdrlen = sizeof(rr3->pktlen) + sizeof(rr3->pkttype);
- rr3->bytes_read = len;
- rr3->bytes_read -= hdrlen;
- rr3->datap = &(rr3->pbuf[0]);
- memcpy(rr3->datap, ((unsigned char *)rr3->bulk_in_buf + hdrlen),
- rr3->bytes_read);
- rr3->datap += rr3->bytes_read;
- rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n",
- rr3->bytes_read, rr3->pktlen);
- break;
- default:
- rr3_dbg(rr3->dev, "ignoring packet with type 0x%02x, "
- "len of %d, 0x%02x\n", rr3->pkttype, len, rr3->pktlen);
- break;
- }
- }
- static void redrat3_read_packet_continue(struct redrat3_dev *rr3, int len)
- {
- rr3_ftr(rr3->dev, "Entering %s\n", __func__);
- memcpy(rr3->datap, (unsigned char *)rr3->bulk_in_buf, len);
- rr3->datap += len;
- rr3->bytes_read += len;
- rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n",
- rr3->bytes_read, rr3->pktlen);
- }
- /* gather IR data from incoming urb, process it when we have enough */
- static int redrat3_get_ir_data(struct redrat3_dev *rr3, int len)
- {
- struct device *dev = rr3->dev;
- int ret = 0;
- rr3_ftr(dev, "Entering %s\n", __func__);
- if (rr3->pktlen > RR3_MAX_BUF_SIZE) {
- dev_err(rr3->dev, "error: packet larger than buffer\n");
- ret = -EINVAL;
- goto out;
- }
- if ((rr3->bytes_read == 0) &&
- (len >= (sizeof(rr3->pkttype) + sizeof(rr3->pktlen)))) {
- redrat3_read_packet_start(rr3, len);
- } else if (rr3->bytes_read != 0) {
- redrat3_read_packet_continue(rr3, len);
- } else if (rr3->bytes_read == 0) {
- dev_err(dev, "error: no packet data read\n");
- ret = -ENODATA;
- goto out;
- }
- if (rr3->bytes_read > rr3->pktlen) {
- dev_err(dev, "bytes_read (%d) greater than pktlen (%d)\n",
- rr3->bytes_read, rr3->pktlen);
- ret = -EINVAL;
- goto out;
- } else if (rr3->bytes_read < rr3->pktlen)
- /* we're still accumulating data */
- return 0;
- /* if we get here, we've got IR data to decode */
- if (rr3->pkttype == RR3_MOD_SIGNAL_IN)
- redrat3_process_ir_data(rr3);
- else
- rr3_dbg(dev, "discarding non-signal data packet "
- "(type 0x%02x)\n", rr3->pkttype);
- out:
- rr3->bytes_read = 0;
- rr3->pktlen = 0;
- rr3->pkttype = 0;
- return ret;
- }
- /* callback function from USB when async USB request has completed */
- static void redrat3_handle_async(struct urb *urb, struct pt_regs *regs)
- {
- struct redrat3_dev *rr3;
- int ret;
- if (!urb)
- return;
- rr3 = urb->context;
- if (!rr3) {
- pr_err("%s called with invalid context!\n", __func__);
- usb_unlink_urb(urb);
- return;
- }
- rr3_ftr(rr3->dev, "Entering %s\n", __func__);
- switch (urb->status) {
- case 0:
- ret = redrat3_get_ir_data(rr3, urb->actual_length);
- if (!ret) {
- /* no error, prepare to read more */
- redrat3_issue_async(rr3);
- }
- break;
- case -ECONNRESET:
- case -ENOENT:
- case -ESHUTDOWN:
- usb_unlink_urb(urb);
- return;
- case -EPIPE:
- default:
- dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status);
- rr3->bytes_read = 0;
- rr3->pktlen = 0;
- rr3->pkttype = 0;
- break;
- }
- }
- static void redrat3_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
- {
- struct redrat3_dev *rr3;
- int len;
- if (!urb)
- return;
- rr3 = urb->context;
- if (rr3) {
- len = urb->actual_length;
- rr3_ftr(rr3->dev, "%s: called (status=%d len=%d)\n",
- __func__, urb->status, len);
- }
- }
- static u16 mod_freq_to_val(unsigned int mod_freq)
- {
- int mult = 6000000;
- /* Clk used in mod. freq. generation is CLK24/4. */
- return (u16)(65536 - (mult / mod_freq));
- }
- static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier)
- {
- struct redrat3_dev *rr3 = rcdev->priv;
- struct device *dev = rr3->dev;
- rr3_dbg(dev, "Setting modulation frequency to %u", carrier);
- rr3->carrier = carrier;
- return carrier;
- }
- static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
- unsigned count)
- {
- struct redrat3_dev *rr3 = rcdev->priv;
- struct device *dev = rr3->dev;
- struct redrat3_signal_header header;
- int i, j, ret, ret_len, offset;
- int lencheck, cur_sample_len, pipe;
- char *buffer = NULL, *sigdata = NULL;
- int *sample_lens = NULL;
- u32 tmpi;
- u16 tmps;
- u8 *datap;
- u8 curlencheck = 0;
- u16 *lengths_ptr;
- int sendbuf_len;
- rr3_ftr(dev, "Entering %s\n", __func__);
- if (rr3->transmitting) {
- dev_warn(dev, "%s: transmitter already in use\n", __func__);
- return -EAGAIN;
- }
- if (count > (RR3_DRIVER_MAXLENS * 2))
- return -EINVAL;
- /* rr3 will disable rc detector on transmit */
- rr3->det_enabled = false;
- rr3->transmitting = true;
- sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL);
- if (!sample_lens) {
- ret = -ENOMEM;
- goto out;
- }
- for (i = 0; i < count; i++) {
- for (lencheck = 0; lencheck < curlencheck; lencheck++) {
- cur_sample_len = redrat3_us_to_len(txbuf[i]);
- if (sample_lens[lencheck] == cur_sample_len)
- break;
- }
- if (lencheck == curlencheck) {
- cur_sample_len = redrat3_us_to_len(txbuf[i]);
- rr3_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n",
- i, txbuf[i], curlencheck, cur_sample_len);
- if (curlencheck < 255) {
- /* now convert the value to a proper
- * rr3 value.. */
- sample_lens[curlencheck] = cur_sample_len;
- curlencheck++;
- } else {
- dev_err(dev, "signal too long\n");
- ret = -EINVAL;
- goto out;
- }
- }
- }
- sigdata = kzalloc((count + RR3_TX_TRAILER_LEN), GFP_KERNEL);
- if (!sigdata) {
- ret = -ENOMEM;
- goto out;
- }
- sigdata[count] = RR3_END_OF_SIGNAL;
- sigdata[count + 1] = RR3_END_OF_SIGNAL;
- for (i = 0; i < count; i++) {
- for (j = 0; j < curlencheck; j++) {
- if (sample_lens[j] == redrat3_us_to_len(txbuf[i]))
- sigdata[i] = j;
- }
- }
- offset = RR3_TX_HEADER_OFFSET;
- sendbuf_len = RR3_HEADER_LENGTH + (sizeof(u16) * RR3_DRIVER_MAXLENS)
- + count + RR3_TX_TRAILER_LEN + offset;
- buffer = kzalloc(sendbuf_len, GFP_KERNEL);
- if (!buffer) {
- ret = -ENOMEM;
- goto out;
- }
- /* fill in our packet header */
- header.length = sendbuf_len - offset;
- header.transfer_type = RR3_MOD_SIGNAL_OUT;
- header.pause = redrat3_len_to_us(100);
- header.mod_freq_count = mod_freq_to_val(rr3->carrier);
- header.no_periods = 0; /* n/a to transmit */
- header.max_lengths = RR3_DRIVER_MAXLENS;
- header.no_lengths = curlencheck;
- header.max_sig_size = RR3_MAX_SIG_SIZE;
- header.sig_size = count + RR3_TX_TRAILER_LEN;
- /* we currently rely on repeat handling in the IR encoding source */
- header.no_repeats = 0;
- tmps = cpu_to_be16(header.length);
- memcpy(buffer, &tmps, 2);
- tmps = cpu_to_be16(header.transfer_type);
- memcpy(buffer + 2, &tmps, 2);
- tmpi = cpu_to_be32(header.pause);
- memcpy(buffer + offset, &tmpi, sizeof(tmpi));
- tmps = cpu_to_be16(header.mod_freq_count);
- memcpy(buffer + offset + RR3_FREQ_COUNT_OFFSET, &tmps, 2);
- buffer[offset + RR3_NUM_LENGTHS_OFFSET] = header.no_lengths;
- tmps = cpu_to_be16(header.sig_size);
- memcpy(buffer + offset + RR3_NUM_SIGS_OFFSET, &tmps, 2);
- buffer[offset + RR3_REPEATS_OFFSET] = header.no_repeats;
- lengths_ptr = (u16 *)(buffer + offset + RR3_HEADER_LENGTH);
- for (i = 0; i < curlencheck; ++i)
- lengths_ptr[i] = cpu_to_be16(sample_lens[i]);
- datap = (u8 *)(buffer + offset + RR3_HEADER_LENGTH +
- (sizeof(u16) * RR3_DRIVER_MAXLENS));
- memcpy(datap, sigdata, (count + RR3_TX_TRAILER_LEN));
- if (debug) {
- redrat3_dump_signal_header(&header);
- redrat3_dump_signal_data(buffer, header.sig_size);
- }
- pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
- tmps = usb_bulk_msg(rr3->udev, pipe, buffer,
- sendbuf_len, &ret_len, 10 * HZ);
- rr3_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, tmps);
- /* now tell the hardware to transmit what we sent it */
- pipe = usb_rcvctrlpipe(rr3->udev, 0);
- ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0, 0, buffer, 2, HZ * 10);
- if (ret < 0)
- dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
- else
- ret = count;
- out:
- kfree(sample_lens);
- kfree(buffer);
- kfree(sigdata);
- rr3->transmitting = false;
- /* rr3 re-enables rc detector because it was enabled before */
- rr3->det_enabled = true;
- return ret;
- }
- static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3)
- {
- struct device *dev = rr3->dev;
- struct rc_dev *rc;
- int ret = -ENODEV;
- u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct);
- rc = rc_allocate_device();
- if (!rc) {
- dev_err(dev, "remote input dev allocation failed\n");
- goto out;
- }
- snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s "
- "Infrared Remote Transceiver (%04x:%04x)",
- prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "",
- le16_to_cpu(rr3->udev->descriptor.idVendor), prod);
- usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys));
- rc->input_name = rr3->name;
- rc->input_phys = rr3->phys;
- usb_to_input_id(rr3->udev, &rc->input_id);
- rc->dev.parent = dev;
- rc->priv = rr3;
- rc->driver_type = RC_DRIVER_IR_RAW;
- rc->allowed_protos = RC_TYPE_ALL;
- rc->timeout = US_TO_NS(2750);
- rc->tx_ir = redrat3_transmit_ir;
- rc->s_tx_carrier = redrat3_set_tx_carrier;
- rc->driver_name = DRIVER_NAME;
- rc->map_name = RC_MAP_HAUPPAUGE;
- ret = rc_register_device(rc);
- if (ret < 0) {
- dev_err(dev, "remote dev registration failed\n");
- goto out;
- }
- return rc;
- out:
- rc_free_device(rc);
- return NULL;
- }
- static int __devinit redrat3_dev_probe(struct usb_interface *intf,
- const struct usb_device_id *id)
- {
- struct usb_device *udev = interface_to_usbdev(intf);
- struct device *dev = &intf->dev;
- struct usb_host_interface *uhi;
- struct redrat3_dev *rr3;
- struct usb_endpoint_descriptor *ep;
- struct usb_endpoint_descriptor *ep_in = NULL;
- struct usb_endpoint_descriptor *ep_out = NULL;
- u8 addr, attrs;
- int pipe, i;
- int retval = -ENOMEM;
- rr3_ftr(dev, "%s called\n", __func__);
- uhi = intf->cur_altsetting;
- /* find our bulk-in and bulk-out endpoints */
- for (i = 0; i < uhi->desc.bNumEndpoints; ++i) {
- ep = &uhi->endpoint[i].desc;
- addr = ep->bEndpointAddress;
- attrs = ep->bmAttributes;
- if ((ep_in == NULL) &&
- ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
- ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
- USB_ENDPOINT_XFER_BULK)) {
- rr3_dbg(dev, "found bulk-in endpoint at 0x%02x\n",
- ep->bEndpointAddress);
- /* data comes in on 0x82, 0x81 is for other data... */
- if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR)
- ep_in = ep;
- }
- if ((ep_out == NULL) &&
- ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
- ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
- USB_ENDPOINT_XFER_BULK)) {
- rr3_dbg(dev, "found bulk-out endpoint at 0x%02x\n",
- ep->bEndpointAddress);
- ep_out = ep;
- }
- }
- if (!ep_in || !ep_out) {
- dev_err(dev, "Couldn't find both in and out endpoints\n");
- retval = -ENODEV;
- goto no_endpoints;
- }
- /* allocate memory for our device state and initialize it */
- rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL);
- if (rr3 == NULL) {
- dev_err(dev, "Memory allocation failure\n");
- goto no_endpoints;
- }
- rr3->dev = &intf->dev;
- /* set up bulk-in endpoint */
- rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!rr3->read_urb) {
- dev_err(dev, "Read urb allocation failure\n");
- goto error;
- }
- rr3->ep_in = ep_in;
- rr3->bulk_in_buf = usb_alloc_coherent(udev, ep_in->wMaxPacketSize,
- GFP_ATOMIC, &rr3->dma_in);
- if (!rr3->bulk_in_buf) {
- dev_err(dev, "Read buffer allocation failure\n");
- goto error;
- }
- pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress);
- usb_fill_bulk_urb(rr3->read_urb, udev, pipe,
- rr3->bulk_in_buf, ep_in->wMaxPacketSize,
- (usb_complete_t)redrat3_handle_async, rr3);
- /* set up bulk-out endpoint*/
- rr3->write_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!rr3->write_urb) {
- dev_err(dev, "Write urb allocation failure\n");
- goto error;
- }
- rr3->ep_out = ep_out;
- rr3->bulk_out_buf = usb_alloc_coherent(udev, ep_out->wMaxPacketSize,
- GFP_ATOMIC, &rr3->dma_out);
- if (!rr3->bulk_out_buf) {
- dev_err(dev, "Write buffer allocation failure\n");
- goto error;
- }
- pipe = usb_sndbulkpipe(udev, ep_out->bEndpointAddress);
- usb_fill_bulk_urb(rr3->write_urb, udev, pipe,
- rr3->bulk_out_buf, ep_out->wMaxPacketSize,
- (usb_complete_t)redrat3_write_bulk_callback, rr3);
- mutex_init(&rr3->lock);
- rr3->udev = udev;
- redrat3_reset(rr3);
- redrat3_get_firmware_rev(rr3);
- /* might be all we need to do? */
- retval = redrat3_enable_detector(rr3);
- if (retval < 0)
- goto error;
- /* store current hardware timeout, in us, will use for kfifo resets */
- rr3->hw_timeout = redrat3_get_timeout(rr3);
- /* default.. will get overridden by any sends with a freq defined */
- rr3->carrier = 38000;
- rr3->rc = redrat3_init_rc_dev(rr3);
- if (!rr3->rc)
- goto error;
- setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3);
- /* we can register the device now, as it is ready */
- usb_set_intfdata(intf, rr3);
- rr3_ftr(dev, "Exiting %s\n", __func__);
- return 0;
- error:
- redrat3_delete(rr3, rr3->udev);
- no_endpoints:
- dev_err(dev, "%s: retval = %x", __func__, retval);
- return retval;
- }
- static void __devexit redrat3_dev_disconnect(struct usb_interface *intf)
- {
- struct usb_device *udev = interface_to_usbdev(intf);
- struct redrat3_dev *rr3 = usb_get_intfdata(intf);
- rr3_ftr(&intf->dev, "Entering %s\n", __func__);
- if (!rr3)
- return;
- redrat3_disable_detector(rr3);
- usb_set_intfdata(intf, NULL);
- rc_unregister_device(rr3->rc);
- del_timer_sync(&rr3->rx_timeout);
- redrat3_delete(rr3, udev);
- rr3_ftr(&intf->dev, "RedRat3 IR Transceiver now disconnected\n");
- }
- static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message)
- {
- struct redrat3_dev *rr3 = usb_get_intfdata(intf);
- rr3_ftr(rr3->dev, "suspend\n");
- usb_kill_urb(rr3->read_urb);
- return 0;
- }
- static int redrat3_dev_resume(struct usb_interface *intf)
- {
- struct redrat3_dev *rr3 = usb_get_intfdata(intf);
- rr3_ftr(rr3->dev, "resume\n");
- if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC))
- return -EIO;
- return 0;
- }
- static struct usb_driver redrat3_dev_driver = {
- .name = DRIVER_NAME,
- .probe = redrat3_dev_probe,
- .disconnect = redrat3_dev_disconnect,
- .suspend = redrat3_dev_suspend,
- .resume = redrat3_dev_resume,
- .reset_resume = redrat3_dev_resume,
- .id_table = redrat3_dev_table
- };
- module_usb_driver(redrat3_dev_driver);
- MODULE_DESCRIPTION(DRIVER_DESC);
- MODULE_AUTHOR(DRIVER_AUTHOR);
- MODULE_AUTHOR(DRIVER_AUTHOR2);
- MODULE_LICENSE("GPL");
- MODULE_DEVICE_TABLE(usb, redrat3_dev_table);
- module_param(debug, int, S_IRUGO | S_IWUSR);
- MODULE_PARM_DESC(debug, "Enable module debug spew. 0 = no debugging (default) "
- "0x1 = standard debug messages, 0x2 = function tracing debug. "
- "Flag bits are addative (i.e., 0x3 for both debug types).");
|