972 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * USB ATI Remote support4 *5 * Copyright (c) 2011, 2012 Anssi Hannula <anssi.hannula@iki.fi>6 * Version 2.2.0 Copyright (c) 2004 Torrey Hoffman <thoffman@arnor.net>7 * Version 2.1.1 Copyright (c) 2002 Vladimir Dergachev8 *9 * This 2.2.0 version is a rewrite / cleanup of the 2.1.1 driver, including10 * porting to the 2.6 kernel interfaces, along with other modification11 * to better match the style of the existing usb/input drivers. However, the12 * protocol and hardware handling is essentially unchanged from 2.1.1.13 *14 * The 2.1.1 driver was derived from the usbati_remote and usbkbd drivers by15 * Vojtech Pavlik.16 *17 * Changes:18 *19 * Feb 2004: Torrey Hoffman <thoffman@arnor.net>20 * Version 2.2.021 * Jun 2004: Torrey Hoffman <thoffman@arnor.net>22 * Version 2.2.123 * Added key repeat support contributed by:24 * Vincent Vanackere <vanackere@lif.univ-mrs.fr>25 * Added support for the "Lola" remote contributed by:26 * Seth Cohn <sethcohn@yahoo.com>27 *28 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *29 *30 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *31 *32 * Hardware & software notes33 *34 * These remote controls are distributed by ATI as part of their35 * "All-In-Wonder" video card packages. The receiver self-identifies as a36 * "USB Receiver" with manufacturer "X10 Wireless Technology Inc".37 *38 * The "Lola" remote is available from X10. See:39 * http://www.x10.com/products/lola_sg1.htm40 * The Lola is similar to the ATI remote but has no mouse support, and slightly41 * different keys.42 *43 * It is possible to use multiple receivers and remotes on multiple computers44 * simultaneously by configuring them to use specific channels.45 *46 * The RF protocol used by the remote supports 16 distinct channels, 1 to 16.47 * Actually, it may even support more, at least in some revisions of the48 * hardware.49 *50 * Each remote can be configured to transmit on one channel as follows:51 * - Press and hold the "hand icon" button.52 * - When the red LED starts to blink, let go of the "hand icon" button.53 * - When it stops blinking, input the channel code as two digits, from 0154 * to 16, and press the hand icon again.55 *56 * The timing can be a little tricky. Try loading the module with debug=157 * to have the kernel print out messages about the remote control number58 * and mask. Note: debugging prints remote numbers as zero-based hexadecimal.59 *60 * The driver has a "channel_mask" parameter. This bitmask specifies which61 * channels will be ignored by the module. To mask out channels, just add62 * all the 2^channel_number values together.63 *64 * For instance, set channel_mask = 2^4 = 16 (binary 10000) to make ati_remote65 * ignore signals coming from remote controls transmitting on channel 4, but66 * accept all other channels.67 *68 * Or, set channel_mask = 65533, (0xFFFD), and all channels except 1 will be69 * ignored.70 *71 * The default is 0 (respond to all channels). Bit 0 and bits 17-32 of this72 * parameter are unused.73 */74 75#include <linux/kernel.h>76#include <linux/errno.h>77#include <linux/init.h>78#include <linux/slab.h>79#include <linux/module.h>80#include <linux/mutex.h>81#include <linux/usb/input.h>82#include <linux/wait.h>83#include <linux/jiffies.h>84#include <media/rc-core.h>85 86/*87 * Module and Version Information, Module Parameters88 */89 90#define ATI_REMOTE_VENDOR_ID 0x0bc791#define LOLA_REMOTE_PRODUCT_ID 0x000292#define LOLA2_REMOTE_PRODUCT_ID 0x000393#define ATI_REMOTE_PRODUCT_ID 0x000494#define NVIDIA_REMOTE_PRODUCT_ID 0x000595#define MEDION_REMOTE_PRODUCT_ID 0x000696#define FIREFLY_REMOTE_PRODUCT_ID 0x000897 98#define DRIVER_VERSION "2.2.1"99#define DRIVER_AUTHOR "Torrey Hoffman <thoffman@arnor.net>"100#define DRIVER_DESC "ATI/X10 RF USB Remote Control"101 102#define NAME_BUFSIZE 80 /* size of product name, path buffers */103#define DATA_BUFSIZE 63 /* size of URB data buffers */104 105/*106 * Duplicate event filtering time.107 * Sequential, identical KIND_FILTERED inputs with less than108 * FILTER_TIME milliseconds between them are considered as repeat109 * events. The hardware generates 5 events for the first keypress110 * and we have to take this into account for an accurate repeat111 * behaviour.112 */113#define FILTER_TIME 60 /* msec */114#define REPEAT_DELAY 500 /* msec */115 116static unsigned long channel_mask;117module_param(channel_mask, ulong, 0644);118MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore");119 120static int debug;121module_param(debug, int, 0644);122MODULE_PARM_DESC(debug, "Enable extra debug messages and information");123 124static int repeat_filter = FILTER_TIME;125module_param(repeat_filter, int, 0644);126MODULE_PARM_DESC(repeat_filter, "Repeat filter time, default = 60 msec");127 128static int repeat_delay = REPEAT_DELAY;129module_param(repeat_delay, int, 0644);130MODULE_PARM_DESC(repeat_delay, "Delay before sending repeats, default = 500 msec");131 132static bool mouse = true;133module_param(mouse, bool, 0444);134MODULE_PARM_DESC(mouse, "Enable mouse device, default = yes");135 136#define dbginfo(dev, format, arg...) \137 do { if (debug) dev_info(dev , format , ## arg); } while (0)138 139struct ati_receiver_type {140 /* either default_keymap or get_default_keymap should be set */141 const char *default_keymap;142 const char *(*get_default_keymap)(struct usb_interface *interface);143};144 145static const char *get_medion_keymap(struct usb_interface *interface)146{147 struct usb_device *udev = interface_to_usbdev(interface);148 149 /*150 * There are many different Medion remotes shipped with a receiver151 * with the same usb id, but the receivers have subtle differences152 * in the USB descriptors allowing us to detect them.153 */154 155 if (udev->manufacturer && udev->product) {156 if (udev->actconfig->desc.bmAttributes & USB_CONFIG_ATT_WAKEUP) {157 158 if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc")159 && !strcmp(udev->product, "USB Receiver"))160 return RC_MAP_MEDION_X10_DIGITAINER;161 162 if (!strcmp(udev->manufacturer, "X10 WTI")163 && !strcmp(udev->product, "RF receiver"))164 return RC_MAP_MEDION_X10_OR2X;165 } else {166 167 if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc")168 && !strcmp(udev->product, "USB Receiver"))169 return RC_MAP_MEDION_X10;170 }171 }172 173 dev_info(&interface->dev,174 "Unknown Medion X10 receiver, using default ati_remote Medion keymap\n");175 176 return RC_MAP_MEDION_X10;177}178 179static const struct ati_receiver_type type_ati = {180 .default_keymap = RC_MAP_ATI_X10181};182static const struct ati_receiver_type type_medion = {183 .get_default_keymap = get_medion_keymap184};185static const struct ati_receiver_type type_firefly = {186 .default_keymap = RC_MAP_SNAPSTREAM_FIREFLY187};188 189static const struct usb_device_id ati_remote_table[] = {190 {191 USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID),192 .driver_info = (unsigned long)&type_ati193 },194 {195 USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA2_REMOTE_PRODUCT_ID),196 .driver_info = (unsigned long)&type_ati197 },198 {199 USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID),200 .driver_info = (unsigned long)&type_ati201 },202 {203 USB_DEVICE(ATI_REMOTE_VENDOR_ID, NVIDIA_REMOTE_PRODUCT_ID),204 .driver_info = (unsigned long)&type_ati205 },206 {207 USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID),208 .driver_info = (unsigned long)&type_medion209 },210 {211 USB_DEVICE(ATI_REMOTE_VENDOR_ID, FIREFLY_REMOTE_PRODUCT_ID),212 .driver_info = (unsigned long)&type_firefly213 },214 {} /* Terminating entry */215};216 217MODULE_DEVICE_TABLE(usb, ati_remote_table);218 219/* Get hi and low bytes of a 16-bits int */220#define HI(a) ((unsigned char)((a) >> 8))221#define LO(a) ((unsigned char)((a) & 0xff))222 223#define SEND_FLAG_IN_PROGRESS 1224#define SEND_FLAG_COMPLETE 2225 226/* Device initialization strings */227static char init1[] = { 0x01, 0x00, 0x20, 0x14 };228static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 };229 230struct ati_remote {231 struct input_dev *idev;232 struct rc_dev *rdev;233 struct usb_device *udev;234 struct usb_interface *interface;235 236 struct urb *irq_urb;237 struct urb *out_urb;238 struct usb_endpoint_descriptor *endpoint_in;239 struct usb_endpoint_descriptor *endpoint_out;240 unsigned char *inbuf;241 unsigned char *outbuf;242 dma_addr_t inbuf_dma;243 dma_addr_t outbuf_dma;244 245 unsigned char old_data; /* Detect duplicate events */246 unsigned long old_jiffies;247 unsigned long acc_jiffies; /* handle acceleration */248 unsigned long first_jiffies;249 250 unsigned int repeat_count;251 252 char rc_name[NAME_BUFSIZE];253 char rc_phys[NAME_BUFSIZE];254 char mouse_name[NAME_BUFSIZE + 6];255 char mouse_phys[NAME_BUFSIZE];256 257 wait_queue_head_t wait;258 int send_flags;259 260 int users; /* 0-2, users are rc and input */261 struct mutex open_mutex;262};263 264/* "Kinds" of messages sent from the hardware to the driver. */265#define KIND_END 0266#define KIND_LITERAL 1 /* Simply pass to input system as EV_KEY */267#define KIND_FILTERED 2 /* Add artificial key-up events, drop keyrepeats */268#define KIND_ACCEL 3 /* Translate to EV_REL mouse-move events */269 270/* Translation table from hardware messages to input events. */271static const struct {272 unsigned char kind;273 unsigned char data; /* Raw key code from remote */274 unsigned short code; /* Input layer translation */275} ati_remote_tbl[] = {276 /* Directional control pad axes. Code is xxyy */277 {KIND_ACCEL, 0x70, 0xff00}, /* left */278 {KIND_ACCEL, 0x71, 0x0100}, /* right */279 {KIND_ACCEL, 0x72, 0x00ff}, /* up */280 {KIND_ACCEL, 0x73, 0x0001}, /* down */281 282 /* Directional control pad diagonals */283 {KIND_ACCEL, 0x74, 0xffff}, /* left up */284 {KIND_ACCEL, 0x75, 0x01ff}, /* right up */285 {KIND_ACCEL, 0x77, 0xff01}, /* left down */286 {KIND_ACCEL, 0x76, 0x0101}, /* right down */287 288 /* "Mouse button" buttons. The code below uses the fact that the289 * lsbit of the raw code is a down/up indicator. */290 {KIND_LITERAL, 0x78, BTN_LEFT}, /* left btn down */291 {KIND_LITERAL, 0x79, BTN_LEFT}, /* left btn up */292 {KIND_LITERAL, 0x7c, BTN_RIGHT},/* right btn down */293 {KIND_LITERAL, 0x7d, BTN_RIGHT},/* right btn up */294 295 /* Artificial "double-click" events are generated by the hardware.296 * They are mapped to the "side" and "extra" mouse buttons here. */297 {KIND_FILTERED, 0x7a, BTN_SIDE}, /* left dblclick */298 {KIND_FILTERED, 0x7e, BTN_EXTRA},/* right dblclick */299 300 /* Non-mouse events are handled by rc-core */301 {KIND_END, 0x00, 0}302};303 304/*305 * ati_remote_dump_input306 */307static void ati_remote_dump(struct device *dev, unsigned char *data,308 unsigned int len)309{310 if (len == 1) {311 if (data[0] != (unsigned char)0xff && data[0] != 0x00)312 dev_warn(dev, "Weird byte 0x%02x\n", data[0]);313 } else if (len == 4)314 dev_warn(dev, "Weird key %*ph\n", 4, data);315 else316 dev_warn(dev, "Weird data, len=%d %*ph ...\n", len, 6, data);317}318 319/*320 * ati_remote_open321 */322static int ati_remote_open(struct ati_remote *ati_remote)323{324 int err = 0;325 326 mutex_lock(&ati_remote->open_mutex);327 328 if (ati_remote->users++ != 0)329 goto out; /* one was already active */330 331 /* On first open, submit the read urb which was set up previously. */332 ati_remote->irq_urb->dev = ati_remote->udev;333 if (usb_submit_urb(ati_remote->irq_urb, GFP_KERNEL)) {334 dev_err(&ati_remote->interface->dev,335 "%s: usb_submit_urb failed!\n", __func__);336 err = -EIO;337 }338 339out: mutex_unlock(&ati_remote->open_mutex);340 return err;341}342 343/*344 * ati_remote_close345 */346static void ati_remote_close(struct ati_remote *ati_remote)347{348 mutex_lock(&ati_remote->open_mutex);349 if (--ati_remote->users == 0)350 usb_kill_urb(ati_remote->irq_urb);351 mutex_unlock(&ati_remote->open_mutex);352}353 354static int ati_remote_input_open(struct input_dev *inputdev)355{356 struct ati_remote *ati_remote = input_get_drvdata(inputdev);357 return ati_remote_open(ati_remote);358}359 360static void ati_remote_input_close(struct input_dev *inputdev)361{362 struct ati_remote *ati_remote = input_get_drvdata(inputdev);363 ati_remote_close(ati_remote);364}365 366static int ati_remote_rc_open(struct rc_dev *rdev)367{368 struct ati_remote *ati_remote = rdev->priv;369 return ati_remote_open(ati_remote);370}371 372static void ati_remote_rc_close(struct rc_dev *rdev)373{374 struct ati_remote *ati_remote = rdev->priv;375 ati_remote_close(ati_remote);376}377 378/*379 * ati_remote_irq_out380 */381static void ati_remote_irq_out(struct urb *urb)382{383 struct ati_remote *ati_remote = urb->context;384 385 if (urb->status) {386 dev_dbg(&ati_remote->interface->dev, "%s: status %d\n",387 __func__, urb->status);388 return;389 }390 391 ati_remote->send_flags |= SEND_FLAG_COMPLETE;392 wmb();393 wake_up(&ati_remote->wait);394}395 396/*397 * ati_remote_sendpacket398 *399 * Used to send device initialization strings400 */401static int ati_remote_sendpacket(struct ati_remote *ati_remote, u16 cmd,402 unsigned char *data)403{404 int retval = 0;405 406 /* Set up out_urb */407 memcpy(ati_remote->out_urb->transfer_buffer + 1, data, LO(cmd));408 ((char *) ati_remote->out_urb->transfer_buffer)[0] = HI(cmd);409 410 ati_remote->out_urb->transfer_buffer_length = LO(cmd) + 1;411 ati_remote->out_urb->dev = ati_remote->udev;412 ati_remote->send_flags = SEND_FLAG_IN_PROGRESS;413 414 retval = usb_submit_urb(ati_remote->out_urb, GFP_ATOMIC);415 if (retval) {416 dev_dbg(&ati_remote->interface->dev,417 "sendpacket: usb_submit_urb failed: %d\n", retval);418 return retval;419 }420 421 wait_event_timeout(ati_remote->wait,422 ((ati_remote->out_urb->status != -EINPROGRESS) ||423 (ati_remote->send_flags & SEND_FLAG_COMPLETE)),424 HZ);425 usb_kill_urb(ati_remote->out_urb);426 427 return retval;428}429 430struct accel_times {431 const char value;432 unsigned int msecs;433};434 435static const struct accel_times accel[] = {436 { 1, 125 },437 { 2, 250 },438 { 4, 500 },439 { 6, 1000 },440 { 9, 1500 },441 { 13, 2000 },442 { 20, 0 },443};444 445/*446 * ati_remote_compute_accel447 *448 * Implements acceleration curve for directional control pad449 * If elapsed time since last event is > 1/4 second, user "stopped",450 * so reset acceleration. Otherwise, user is probably holding the control451 * pad down, so we increase acceleration, ramping up over two seconds to452 * a maximum speed.453 */454static int ati_remote_compute_accel(struct ati_remote *ati_remote)455{456 unsigned long now = jiffies, reset_time;457 int i;458 459 reset_time = msecs_to_jiffies(250);460 461 if (time_after(now, ati_remote->old_jiffies + reset_time)) {462 ati_remote->acc_jiffies = now;463 return 1;464 }465 for (i = 0; i < ARRAY_SIZE(accel) - 1; i++) {466 unsigned long timeout = msecs_to_jiffies(accel[i].msecs);467 468 if (time_before(now, ati_remote->acc_jiffies + timeout))469 return accel[i].value;470 }471 return accel[i].value;472}473 474/*475 * ati_remote_report_input476 */477static void ati_remote_input_report(struct urb *urb)478{479 struct ati_remote *ati_remote = urb->context;480 unsigned char *data= ati_remote->inbuf;481 struct input_dev *dev = ati_remote->idev;482 int index = -1;483 int remote_num;484 unsigned char scancode;485 u32 wheel_keycode = KEY_RESERVED;486 int i;487 488 /*489 * data[0] = 0x14490 * data[1] = data[2] + data[3] + 0xd5 (a checksum byte)491 * data[2] = the key code (with toggle bit in MSB with some models)492 * data[3] = channel << 4 (the low 4 bits must be zero)493 */494 495 /* Deal with strange looking inputs */496 if ( urb->actual_length != 4 || data[0] != 0x14 ||497 data[1] != (unsigned char)(data[2] + data[3] + 0xD5) ||498 (data[3] & 0x0f) != 0x00) {499 ati_remote_dump(&urb->dev->dev, data, urb->actual_length);500 return;501 }502 503 if (data[1] != ((data[2] + data[3] + 0xd5) & 0xff)) {504 dbginfo(&ati_remote->interface->dev,505 "wrong checksum in input: %*ph\n", 4, data);506 return;507 }508 509 /* Mask unwanted remote channels. */510 /* note: remote_num is 0-based, channel 1 on remote == 0 here */511 remote_num = (data[3] >> 4) & 0x0f;512 if (channel_mask & (1 << (remote_num + 1))) {513 dbginfo(&ati_remote->interface->dev,514 "Masked input from channel 0x%02x: data %02x, mask= 0x%02lx\n",515 remote_num, data[2], channel_mask);516 return;517 }518 519 /*520 * MSB is a toggle code, though only used by some devices521 * (e.g. SnapStream Firefly)522 */523 scancode = data[2] & 0x7f;524 525 dbginfo(&ati_remote->interface->dev,526 "channel 0x%02x; key data %02x, scancode %02x\n",527 remote_num, data[2], scancode);528 529 if (scancode >= 0x70) {530 /*531 * This is either a mouse or scrollwheel event, depending on532 * the remote/keymap.533 * Get the keycode assigned to scancode 0x78/0x70. If it is534 * set, assume this is a scrollwheel up/down event.535 */536 wheel_keycode = rc_g_keycode_from_table(ati_remote->rdev,537 scancode & 0x78);538 539 if (wheel_keycode == KEY_RESERVED) {540 /* scrollwheel was not mapped, assume mouse */541 542 /* Look up event code index in the mouse translation543 * table.544 */545 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) {546 if (scancode == ati_remote_tbl[i].data) {547 index = i;548 break;549 }550 }551 }552 }553 554 if (index >= 0 && ati_remote_tbl[index].kind == KIND_LITERAL) {555 /*556 * The lsbit of the raw key code is a down/up flag.557 * Invert it to match the input layer's conventions.558 */559 input_event(dev, EV_KEY, ati_remote_tbl[index].code,560 !(data[2] & 1));561 562 ati_remote->old_jiffies = jiffies;563 564 } else if (index < 0 || ati_remote_tbl[index].kind == KIND_FILTERED) {565 unsigned long now = jiffies;566 567 /* Filter duplicate events which happen "too close" together. */568 if (ati_remote->old_data == data[2] &&569 time_before(now, ati_remote->old_jiffies +570 msecs_to_jiffies(repeat_filter))) {571 ati_remote->repeat_count++;572 } else {573 ati_remote->repeat_count = 0;574 ati_remote->first_jiffies = now;575 }576 577 ati_remote->old_jiffies = now;578 579 /* Ensure we skip at least the 4 first duplicate events580 * (generated by a single keypress), and continue skipping581 * until repeat_delay msecs have passed.582 */583 if (ati_remote->repeat_count > 0 &&584 (ati_remote->repeat_count < 5 ||585 time_before(now, ati_remote->first_jiffies +586 msecs_to_jiffies(repeat_delay))))587 return;588 589 if (index >= 0) {590 input_event(dev, EV_KEY, ati_remote_tbl[index].code, 1);591 input_event(dev, EV_KEY, ati_remote_tbl[index].code, 0);592 } else {593 /* Not a mouse event, hand it to rc-core. */594 int count = 1;595 596 if (wheel_keycode != KEY_RESERVED) {597 /*598 * This is a scrollwheel event, send the599 * scroll up (0x78) / down (0x70) scancode600 * repeatedly as many times as indicated by601 * rest of the scancode.602 */603 count = (scancode & 0x07) + 1;604 scancode &= 0x78;605 }606 607 while (count--) {608 /*609 * We don't use the rc-core repeat handling yet as610 * it would cause ghost repeats which would be a611 * regression for this driver.612 */613 rc_keydown_notimeout(ati_remote->rdev,614 RC_PROTO_OTHER,615 scancode, data[2]);616 rc_keyup(ati_remote->rdev);617 }618 goto nosync;619 }620 621 } else if (ati_remote_tbl[index].kind == KIND_ACCEL) {622 signed char dx = ati_remote_tbl[index].code >> 8;623 signed char dy = ati_remote_tbl[index].code & 255;624 625 /*626 * Other event kinds are from the directional control pad, and627 * have an acceleration factor applied to them. Without this628 * acceleration, the control pad is mostly unusable.629 */630 int acc = ati_remote_compute_accel(ati_remote);631 if (dx)632 input_report_rel(dev, REL_X, dx * acc);633 if (dy)634 input_report_rel(dev, REL_Y, dy * acc);635 ati_remote->old_jiffies = jiffies;636 637 } else {638 dev_dbg(&ati_remote->interface->dev, "ati_remote kind=%d\n",639 ati_remote_tbl[index].kind);640 return;641 }642 input_sync(dev);643nosync:644 ati_remote->old_data = data[2];645}646 647/*648 * ati_remote_irq_in649 */650static void ati_remote_irq_in(struct urb *urb)651{652 struct ati_remote *ati_remote = urb->context;653 int retval;654 655 switch (urb->status) {656 case 0: /* success */657 ati_remote_input_report(urb);658 break;659 case -ECONNRESET: /* unlink */660 case -ENOENT:661 case -ESHUTDOWN:662 dev_dbg(&ati_remote->interface->dev,663 "%s: urb error status, unlink?\n",664 __func__);665 return;666 default: /* error */667 dev_dbg(&ati_remote->interface->dev,668 "%s: Nonzero urb status %d\n",669 __func__, urb->status);670 }671 672 retval = usb_submit_urb(urb, GFP_ATOMIC);673 if (retval)674 dev_err(&ati_remote->interface->dev,675 "%s: usb_submit_urb()=%d\n",676 __func__, retval);677}678 679/*680 * ati_remote_alloc_buffers681 */682static int ati_remote_alloc_buffers(struct usb_device *udev,683 struct ati_remote *ati_remote)684{685 ati_remote->inbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC,686 &ati_remote->inbuf_dma);687 if (!ati_remote->inbuf)688 return -1;689 690 ati_remote->outbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC,691 &ati_remote->outbuf_dma);692 if (!ati_remote->outbuf)693 return -1;694 695 ati_remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL);696 if (!ati_remote->irq_urb)697 return -1;698 699 ati_remote->out_urb = usb_alloc_urb(0, GFP_KERNEL);700 if (!ati_remote->out_urb)701 return -1;702 703 return 0;704}705 706/*707 * ati_remote_free_buffers708 */709static void ati_remote_free_buffers(struct ati_remote *ati_remote)710{711 usb_free_urb(ati_remote->irq_urb);712 usb_free_urb(ati_remote->out_urb);713 714 usb_free_coherent(ati_remote->udev, DATA_BUFSIZE,715 ati_remote->inbuf, ati_remote->inbuf_dma);716 717 usb_free_coherent(ati_remote->udev, DATA_BUFSIZE,718 ati_remote->outbuf, ati_remote->outbuf_dma);719}720 721static void ati_remote_input_init(struct ati_remote *ati_remote)722{723 struct input_dev *idev = ati_remote->idev;724 int i;725 726 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);727 idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |728 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA);729 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);730 for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++)731 if (ati_remote_tbl[i].kind == KIND_LITERAL ||732 ati_remote_tbl[i].kind == KIND_FILTERED)733 __set_bit(ati_remote_tbl[i].code, idev->keybit);734 735 input_set_drvdata(idev, ati_remote);736 737 idev->open = ati_remote_input_open;738 idev->close = ati_remote_input_close;739 740 idev->name = ati_remote->mouse_name;741 idev->phys = ati_remote->mouse_phys;742 743 usb_to_input_id(ati_remote->udev, &idev->id);744 idev->dev.parent = &ati_remote->interface->dev;745}746 747static void ati_remote_rc_init(struct ati_remote *ati_remote)748{749 struct rc_dev *rdev = ati_remote->rdev;750 751 rdev->priv = ati_remote;752 rdev->allowed_protocols = RC_PROTO_BIT_OTHER;753 rdev->driver_name = "ati_remote";754 755 rdev->open = ati_remote_rc_open;756 rdev->close = ati_remote_rc_close;757 758 rdev->device_name = ati_remote->rc_name;759 rdev->input_phys = ati_remote->rc_phys;760 761 usb_to_input_id(ati_remote->udev, &rdev->input_id);762 rdev->dev.parent = &ati_remote->interface->dev;763}764 765static int ati_remote_initialize(struct ati_remote *ati_remote)766{767 struct usb_device *udev = ati_remote->udev;768 int pipe, maxp;769 770 init_waitqueue_head(&ati_remote->wait);771 772 /* Set up irq_urb */773 pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress);774 maxp = usb_maxpacket(udev, pipe);775 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;776 777 usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf,778 maxp, ati_remote_irq_in, ati_remote,779 ati_remote->endpoint_in->bInterval);780 ati_remote->irq_urb->transfer_dma = ati_remote->inbuf_dma;781 ati_remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;782 783 /* Set up out_urb */784 pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress);785 maxp = usb_maxpacket(udev, pipe);786 maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;787 788 usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf,789 maxp, ati_remote_irq_out, ati_remote,790 ati_remote->endpoint_out->bInterval);791 ati_remote->out_urb->transfer_dma = ati_remote->outbuf_dma;792 ati_remote->out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;793 794 /* send initialization strings */795 if ((ati_remote_sendpacket(ati_remote, 0x8004, init1)) ||796 (ati_remote_sendpacket(ati_remote, 0x8007, init2))) {797 dev_err(&ati_remote->interface->dev,798 "Initializing ati_remote hardware failed.\n");799 return -EIO;800 }801 802 return 0;803}804 805/*806 * ati_remote_probe807 */808static int ati_remote_probe(struct usb_interface *interface,809 const struct usb_device_id *id)810{811 struct usb_device *udev = interface_to_usbdev(interface);812 struct usb_host_interface *iface_host = interface->cur_altsetting;813 struct usb_endpoint_descriptor *endpoint_in, *endpoint_out;814 struct ati_receiver_type *type = (struct ati_receiver_type *)id->driver_info;815 struct ati_remote *ati_remote;816 struct input_dev *input_dev;817 struct device *device = &interface->dev;818 struct rc_dev *rc_dev;819 int err = -ENOMEM;820 821 if (iface_host->desc.bNumEndpoints != 2) {822 dev_err(device, "%s: Unexpected desc.bNumEndpoints\n", __func__);823 return -ENODEV;824 }825 826 endpoint_in = &iface_host->endpoint[0].desc;827 endpoint_out = &iface_host->endpoint[1].desc;828 829 if (!usb_endpoint_is_int_in(endpoint_in)) {830 dev_err(device, "%s: Unexpected endpoint_in\n", __func__);831 return -ENODEV;832 }833 if (le16_to_cpu(endpoint_in->wMaxPacketSize) == 0) {834 dev_err(device, "%s: endpoint_in message size==0?\n", __func__);835 return -ENODEV;836 }837 if (!usb_endpoint_is_int_out(endpoint_out)) {838 dev_err(device, "%s: Unexpected endpoint_out\n", __func__);839 return -ENODEV;840 }841 842 ati_remote = kzalloc(sizeof (struct ati_remote), GFP_KERNEL);843 rc_dev = rc_allocate_device(RC_DRIVER_SCANCODE);844 if (!ati_remote || !rc_dev)845 goto exit_free_dev_rdev;846 847 /* Allocate URB buffers, URBs */848 if (ati_remote_alloc_buffers(udev, ati_remote))849 goto exit_free_buffers;850 851 ati_remote->endpoint_in = endpoint_in;852 ati_remote->endpoint_out = endpoint_out;853 ati_remote->udev = udev;854 ati_remote->rdev = rc_dev;855 ati_remote->interface = interface;856 857 usb_make_path(udev, ati_remote->rc_phys, sizeof(ati_remote->rc_phys));858 strscpy(ati_remote->mouse_phys, ati_remote->rc_phys,859 sizeof(ati_remote->mouse_phys));860 861 strlcat(ati_remote->rc_phys, "/input0", sizeof(ati_remote->rc_phys));862 strlcat(ati_remote->mouse_phys, "/input1", sizeof(ati_remote->mouse_phys));863 864 snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name), "%s%s%s",865 udev->manufacturer ?: "",866 udev->manufacturer && udev->product ? " " : "",867 udev->product ?: "");868 869 if (!strlen(ati_remote->rc_name))870 snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name),871 DRIVER_DESC "(%04x,%04x)",872 le16_to_cpu(ati_remote->udev->descriptor.idVendor),873 le16_to_cpu(ati_remote->udev->descriptor.idProduct));874 875 snprintf(ati_remote->mouse_name, sizeof(ati_remote->mouse_name),876 "%s mouse", ati_remote->rc_name);877 878 rc_dev->map_name = RC_MAP_ATI_X10; /* default map */879 880 /* set default keymap according to receiver model */881 if (type) {882 if (type->default_keymap)883 rc_dev->map_name = type->default_keymap;884 else if (type->get_default_keymap)885 rc_dev->map_name = type->get_default_keymap(interface);886 }887 888 ati_remote_rc_init(ati_remote);889 mutex_init(&ati_remote->open_mutex);890 891 /* Device Hardware Initialization - fills in ati_remote->idev from udev. */892 err = ati_remote_initialize(ati_remote);893 if (err)894 goto exit_kill_urbs;895 896 /* Set up and register rc device */897 err = rc_register_device(ati_remote->rdev);898 if (err)899 goto exit_kill_urbs;900 901 /* Set up and register mouse input device */902 if (mouse) {903 input_dev = input_allocate_device();904 if (!input_dev) {905 err = -ENOMEM;906 goto exit_unregister_device;907 }908 909 ati_remote->idev = input_dev;910 ati_remote_input_init(ati_remote);911 err = input_register_device(input_dev);912 913 if (err)914 goto exit_free_input_device;915 }916 917 usb_set_intfdata(interface, ati_remote);918 return 0;919 920 exit_free_input_device:921 input_free_device(input_dev);922 exit_unregister_device:923 rc_unregister_device(rc_dev);924 rc_dev = NULL;925 exit_kill_urbs:926 usb_kill_urb(ati_remote->irq_urb);927 usb_kill_urb(ati_remote->out_urb);928 exit_free_buffers:929 ati_remote_free_buffers(ati_remote);930 exit_free_dev_rdev:931 rc_free_device(rc_dev);932 kfree(ati_remote);933 return err;934}935 936/*937 * ati_remote_disconnect938 */939static void ati_remote_disconnect(struct usb_interface *interface)940{941 struct ati_remote *ati_remote;942 943 ati_remote = usb_get_intfdata(interface);944 usb_set_intfdata(interface, NULL);945 if (!ati_remote) {946 dev_warn(&interface->dev, "%s - null device?\n", __func__);947 return;948 }949 950 usb_kill_urb(ati_remote->irq_urb);951 usb_kill_urb(ati_remote->out_urb);952 if (ati_remote->idev)953 input_unregister_device(ati_remote->idev);954 rc_unregister_device(ati_remote->rdev);955 ati_remote_free_buffers(ati_remote);956 kfree(ati_remote);957}958 959/* usb specific object to register with the usb subsystem */960static struct usb_driver ati_remote_driver = {961 .name = "ati_remote",962 .probe = ati_remote_probe,963 .disconnect = ati_remote_disconnect,964 .id_table = ati_remote_table,965};966 967module_usb_driver(ati_remote_driver);968 969MODULE_AUTHOR(DRIVER_AUTHOR);970MODULE_DESCRIPTION(DRIVER_DESC);971MODULE_LICENSE("GPL");972