// SPDX-License-Identifier: GPL-2.0-or-later /* * USB ATI Remote support * * Copyright (c) 2011, 2012 Anssi Hannula * Version 2.2.0 Copyright (c) 2004 Torrey Hoffman * Version 2.1.1 Copyright (c) 2002 Vladimir Dergachev * * This 2.2.0 version is a rewrite / cleanup of the 2.1.1 driver, including * porting to the 2.6 kernel interfaces, along with other modification * to better match the style of the existing usb/input drivers. However, the * protocol and hardware handling is essentially unchanged from 2.1.1. * * The 2.1.1 driver was derived from the usbati_remote and usbkbd drivers by * Vojtech Pavlik. * * Changes: * * Feb 2004: Torrey Hoffman * Version 2.2.0 * Jun 2004: Torrey Hoffman * Version 2.2.1 * Added key repeat support contributed by: * Vincent Vanackere * Added support for the "Lola" remote contributed by: * Seth Cohn * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Hardware & software notes * * These remote controls are distributed by ATI as part of their * "All-In-Wonder" video card packages. The receiver self-identifies as a * "USB Receiver" with manufacturer "X10 Wireless Technology Inc". * * The "Lola" remote is available from X10. See: * http://www.x10.com/products/lola_sg1.htm * The Lola is similar to the ATI remote but has no mouse support, and slightly * different keys. * * It is possible to use multiple receivers and remotes on multiple computers * simultaneously by configuring them to use specific channels. * * The RF protocol used by the remote supports 16 distinct channels, 1 to 16. * Actually, it may even support more, at least in some revisions of the * hardware. * * Each remote can be configured to transmit on one channel as follows: * - Press and hold the "hand icon" button. * - When the red LED starts to blink, let go of the "hand icon" button. * - When it stops blinking, input the channel code as two digits, from 01 * to 16, and press the hand icon again. * * The timing can be a little tricky. Try loading the module with debug=1 * to have the kernel print out messages about the remote control number * and mask. Note: debugging prints remote numbers as zero-based hexadecimal. * * The driver has a "channel_mask" parameter. This bitmask specifies which * channels will be ignored by the module. To mask out channels, just add * all the 2^channel_number values together. * * For instance, set channel_mask = 2^4 = 16 (binary 10000) to make ati_remote * ignore signals coming from remote controls transmitting on channel 4, but * accept all other channels. * * Or, set channel_mask = 65533, (0xFFFD), and all channels except 1 will be * ignored. * * The default is 0 (respond to all channels). Bit 0 and bits 17-32 of this * parameter are unused. */ #include #include #include #include #include #include #include #include #include #include /* * Module and Version Information, Module Parameters */ #define ATI_REMOTE_VENDOR_ID 0x0bc7 #define LOLA_REMOTE_PRODUCT_ID 0x0002 #define LOLA2_REMOTE_PRODUCT_ID 0x0003 #define ATI_REMOTE_PRODUCT_ID 0x0004 #define NVIDIA_REMOTE_PRODUCT_ID 0x0005 #define MEDION_REMOTE_PRODUCT_ID 0x0006 #define FIREFLY_REMOTE_PRODUCT_ID 0x0008 #define DRIVER_VERSION "2.2.1" #define DRIVER_AUTHOR "Torrey Hoffman " #define DRIVER_DESC "ATI/X10 RF USB Remote Control" #define NAME_BUFSIZE 80 /* size of product name, path buffers */ #define DATA_BUFSIZE 63 /* size of URB data buffers */ /* * Duplicate event filtering time. * Sequential, identical KIND_FILTERED inputs with less than * FILTER_TIME milliseconds between them are considered as repeat * events. The hardware generates 5 events for the first keypress * and we have to take this into account for an accurate repeat * behaviour. */ #define FILTER_TIME 60 /* msec */ #define REPEAT_DELAY 500 /* msec */ static unsigned long channel_mask; module_param(channel_mask, ulong, 0644); MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore"); static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Enable extra debug messages and information"); static int repeat_filter = FILTER_TIME; module_param(repeat_filter, int, 0644); MODULE_PARM_DESC(repeat_filter, "Repeat filter time, default = 60 msec"); static int repeat_delay = REPEAT_DELAY; module_param(repeat_delay, int, 0644); MODULE_PARM_DESC(repeat_delay, "Delay before sending repeats, default = 500 msec"); static bool mouse = true; module_param(mouse, bool, 0444); MODULE_PARM_DESC(mouse, "Enable mouse device, default = yes"); #define dbginfo(dev, format, arg...) \ do { if (debug) dev_info(dev , format , ## arg); } while (0) struct ati_receiver_type { /* either default_keymap or get_default_keymap should be set */ const char *default_keymap; const char *(*get_default_keymap)(struct usb_interface *interface); }; static const char *get_medion_keymap(struct usb_interface *interface) { struct usb_device *udev = interface_to_usbdev(interface); /* * There are many different Medion remotes shipped with a receiver * with the same usb id, but the receivers have subtle differences * in the USB descriptors allowing us to detect them. */ if (udev->manufacturer && udev->product) { if (udev->actconfig->desc.bmAttributes & USB_CONFIG_ATT_WAKEUP) { if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc") && !strcmp(udev->product, "USB Receiver")) return RC_MAP_MEDION_X10_DIGITAINER; if (!strcmp(udev->manufacturer, "X10 WTI") && !strcmp(udev->product, "RF receiver")) return RC_MAP_MEDION_X10_OR2X; } else { if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc") && !strcmp(udev->product, "USB Receiver")) return RC_MAP_MEDION_X10; } } dev_info(&interface->dev, "Unknown Medion X10 receiver, using default ati_remote Medion keymap\n"); return RC_MAP_MEDION_X10; } static const struct ati_receiver_type type_ati = { .default_keymap = RC_MAP_ATI_X10 }; static const struct ati_receiver_type type_medion = { .get_default_keymap = get_medion_keymap }; static const struct ati_receiver_type type_firefly = { .default_keymap = RC_MAP_SNAPSTREAM_FIREFLY }; static const struct usb_device_id ati_remote_table[] = { { USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID), .driver_info = (unsigned long)&type_ati }, { USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA2_REMOTE_PRODUCT_ID), .driver_info = (unsigned long)&type_ati }, { USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID), .driver_info = (unsigned long)&type_ati }, { USB_DEVICE(ATI_REMOTE_VENDOR_ID, NVIDIA_REMOTE_PRODUCT_ID), .driver_info = (unsigned long)&type_ati }, { USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID), .driver_info = (unsigned long)&type_medion }, { USB_DEVICE(ATI_REMOTE_VENDOR_ID, FIREFLY_REMOTE_PRODUCT_ID), .driver_info = (unsigned long)&type_firefly }, {} /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, ati_remote_table); /* Get hi and low bytes of a 16-bits int */ #define HI(a) ((unsigned char)((a) >> 8)) #define LO(a) ((unsigned char)((a) & 0xff)) #define SEND_FLAG_IN_PROGRESS 1 #define SEND_FLAG_COMPLETE 2 /* Device initialization strings */ static char init1[] = { 0x01, 0x00, 0x20, 0x14 }; static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 }; struct ati_remote { struct input_dev *idev; struct rc_dev *rdev; struct usb_device *udev; struct usb_interface *interface; struct urb *irq_urb; struct urb *out_urb; struct usb_endpoint_descriptor *endpoint_in; struct usb_endpoint_descriptor *endpoint_out; unsigned char *inbuf; unsigned char *outbuf; dma_addr_t inbuf_dma; dma_addr_t outbuf_dma; unsigned char old_data; /* Detect duplicate events */ unsigned long old_jiffies; unsigned long acc_jiffies; /* handle acceleration */ unsigned long first_jiffies; unsigned int repeat_count; char rc_name[NAME_BUFSIZE]; char rc_phys[NAME_BUFSIZE]; char mouse_name[NAME_BUFSIZE + 6]; char mouse_phys[NAME_BUFSIZE]; wait_queue_head_t wait; int send_flags; int users; /* 0-2, users are rc and input */ struct mutex open_mutex; }; /* "Kinds" of messages sent from the hardware to the driver. */ #define KIND_END 0 #define KIND_LITERAL 1 /* Simply pass to input system as EV_KEY */ #define KIND_FILTERED 2 /* Add artificial key-up events, drop keyrepeats */ #define KIND_ACCEL 3 /* Translate to EV_REL mouse-move events */ /* Translation table from hardware messages to input events. */ static const struct { unsigned char kind; unsigned char data; /* Raw key code from remote */ unsigned short code; /* Input layer translation */ } ati_remote_tbl[] = { /* Directional control pad axes. Code is xxyy */ {KIND_ACCEL, 0x70, 0xff00}, /* left */ {KIND_ACCEL, 0x71, 0x0100}, /* right */ {KIND_ACCEL, 0x72, 0x00ff}, /* up */ {KIND_ACCEL, 0x73, 0x0001}, /* down */ /* Directional control pad diagonals */ {KIND_ACCEL, 0x74, 0xffff}, /* left up */ {KIND_ACCEL, 0x75, 0x01ff}, /* right up */ {KIND_ACCEL, 0x77, 0xff01}, /* left down */ {KIND_ACCEL, 0x76, 0x0101}, /* right down */ /* "Mouse button" buttons. The code below uses the fact that the * lsbit of the raw code is a down/up indicator. */ {KIND_LITERAL, 0x78, BTN_LEFT}, /* left btn down */ {KIND_LITERAL, 0x79, BTN_LEFT}, /* left btn up */ {KIND_LITERAL, 0x7c, BTN_RIGHT},/* right btn down */ {KIND_LITERAL, 0x7d, BTN_RIGHT},/* right btn up */ /* Artificial "double-click" events are generated by the hardware. * They are mapped to the "side" and "extra" mouse buttons here. */ {KIND_FILTERED, 0x7a, BTN_SIDE}, /* left dblclick */ {KIND_FILTERED, 0x7e, BTN_EXTRA},/* right dblclick */ /* Non-mouse events are handled by rc-core */ {KIND_END, 0x00, 0} }; /* * ati_remote_dump_input */ static void ati_remote_dump(struct device *dev, unsigned char *data, unsigned int len) { if (len == 1) { if (data[0] != (unsigned char)0xff && data[0] != 0x00) dev_warn(dev, "Weird byte 0x%02x\n", data[0]); } else if (len == 4) dev_warn(dev, "Weird key %4ph\n", data); else dev_warn(dev, "Weird data, len=%d %6ph ...\n", len, data); } /* * ati_remote_open */ static int ati_remote_open(struct ati_remote *ati_remote) { int err = 0; mutex_lock(&ati_remote->open_mutex); if (ati_remote->users++ != 0) goto out; /* one was already active */ /* On first open, submit the read urb which was set up previously. */ ati_remote->irq_urb->dev = ati_remote->udev; if (usb_submit_urb(ati_remote->irq_urb, GFP_KERNEL)) { dev_err(&ati_remote->interface->dev, "%s: usb_submit_urb failed!\n", __func__); err = -EIO; } out: mutex_unlock(&ati_remote->open_mutex); return err; } /* * ati_remote_close */ static void ati_remote_close(struct ati_remote *ati_remote) { mutex_lock(&ati_remote->open_mutex); if (--ati_remote->users == 0) usb_kill_urb(ati_remote->irq_urb); mutex_unlock(&ati_remote->open_mutex); } static int ati_remote_input_open(struct input_dev *inputdev) { struct ati_remote *ati_remote = input_get_drvdata(inputdev); return ati_remote_open(ati_remote); } static void ati_remote_input_close(struct input_dev *inputdev) { struct ati_remote *ati_remote = input_get_drvdata(inputdev); ati_remote_close(ati_remote); } static int ati_remote_rc_open(struct rc_dev *rdev) { struct ati_remote *ati_remote = rdev->priv; return ati_remote_open(ati_remote); } static void ati_remote_rc_close(struct rc_dev *rdev) { struct ati_remote *ati_remote = rdev->priv; ati_remote_close(ati_remote); } /* * ati_remote_irq_out */ static void ati_remote_irq_out(struct urb *urb) { struct ati_remote *ati_remote = urb->context; if (urb->status) { dev_dbg(&ati_remote->interface->dev, "%s: status %d\n", __func__, urb->status); return; } ati_remote->send_flags |= SEND_FLAG_COMPLETE; wmb(); wake_up(&ati_remote->wait); } /* * ati_remote_sendpacket * * Used to send device initialization strings */ static int ati_remote_sendpacket(struct ati_remote *ati_remote, u16 cmd, unsigned char *data) { int retval = 0; /* Set up out_urb */ memcpy(ati_remote->out_urb->transfer_buffer + 1, data, LO(cmd)); ((char *) ati_remote->out_urb->transfer_buffer)[0] = HI(cmd); ati_remote->out_urb->transfer_buffer_length = LO(cmd) + 1; ati_remote->out_urb->dev = ati_remote->udev; ati_remote->send_flags = SEND_FLAG_IN_PROGRESS; retval = usb_submit_urb(ati_remote->out_urb, GFP_ATOMIC); if (retval) { dev_dbg(&ati_remote->interface->dev, "sendpacket: usb_submit_urb failed: %d\n", retval); return retval; } wait_event_timeout(ati_remote->wait, ((ati_remote->out_urb->status != -EINPROGRESS) || (ati_remote->send_flags & SEND_FLAG_COMPLETE)), HZ); usb_kill_urb(ati_remote->out_urb); return retval; } struct accel_times { const char value; unsigned int msecs; }; static const struct accel_times accel[] = { { 1, 125 }, { 2, 250 }, { 4, 500 }, { 6, 1000 }, { 9, 1500 }, { 13, 2000 }, { 20, 0 }, }; /* * ati_remote_compute_accel * * Implements acceleration curve for directional control pad * If elapsed time since last event is > 1/4 second, user "stopped", * so reset acceleration. Otherwise, user is probably holding the control * pad down, so we increase acceleration, ramping up over two seconds to * a maximum speed. */ static int ati_remote_compute_accel(struct ati_remote *ati_remote) { unsigned long now = jiffies, reset_time; int i; reset_time = msecs_to_jiffies(250); if (time_after(now, ati_remote->old_jiffies + reset_time)) { ati_remote->acc_jiffies = now; return 1; } for (i = 0; i < ARRAY_SIZE(accel) - 1; i++) { unsigned long timeout = msecs_to_jiffies(accel[i].msecs); if (time_before(now, ati_remote->acc_jiffies + timeout)) return accel[i].value; } return accel[i].value; } /* * ati_remote_report_input */ static void ati_remote_input_report(struct urb *urb) { struct ati_remote *ati_remote = urb->context; unsigned char *data= ati_remote->inbuf; struct input_dev *dev = ati_remote->idev; int index = -1; int remote_num; unsigned char scancode; u32 wheel_keycode = KEY_RESERVED; int i; /* * data[0] = 0x14 * data[1] = data[2] + data[3] + 0xd5 (a checksum byte) * data[2] = the key code (with toggle bit in MSB with some models) * data[3] = channel << 4 (the low 4 bits must be zero) */ /* Deal with strange looking inputs */ if ( urb->actual_length != 4 || data[0] != 0x14 || data[1] != (unsigned char)(data[2] + data[3] + 0xD5) || (data[3] & 0x0f) != 0x00) { ati_remote_dump(&urb->dev->dev, data, urb->actual_length); return; } if (data[1] != ((data[2] + data[3] + 0xd5) & 0xff)) { dbginfo(&ati_remote->interface->dev, "wrong checksum in input: %4ph\n", data); return; } /* Mask unwanted remote channels. */ /* note: remote_num is 0-based, channel 1 on remote == 0 here */ remote_num = (data[3] >> 4) & 0x0f; if (channel_mask & (1 << (remote_num + 1))) { dbginfo(&ati_remote->interface->dev, "Masked input from channel 0x%02x: data %02x, mask= 0x%02lx\n", remote_num, data[2], channel_mask); return; } /* * MSB is a toggle code, though only used by some devices * (e.g. SnapStream Firefly) */ scancode = data[2] & 0x7f; dbginfo(&ati_remote->interface->dev, "channel 0x%02x; key data %02x, scancode %02x\n", remote_num, data[2], scancode); if (scancode >= 0x70) { /* * This is either a mouse or scrollwheel event, depending on * the remote/keymap. * Get the keycode assigned to scancode 0x78/0x70. If it is * set, assume this is a scrollwheel up/down event. */ wheel_keycode = rc_g_keycode_from_table(ati_remote->rdev, scancode & 0x78); if (wheel_keycode == KEY_RESERVED) { /* scrollwheel was not mapped, assume mouse */ /* Look up event code index in the mouse translation * table. */ for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) { if (scancode == ati_remote_tbl[i].data) { index = i; break; } } } } if (index >= 0 && ati_remote_tbl[index].kind == KIND_LITERAL) { /* * The lsbit of the raw key code is a down/up flag. * Invert it to match the input layer's conventions. */ input_event(dev, EV_KEY, ati_remote_tbl[index].code, !(data[2] & 1)); ati_remote->old_jiffies = jiffies; } else if (index < 0 || ati_remote_tbl[index].kind == KIND_FILTERED) { unsigned long now = jiffies; /* Filter duplicate events which happen "too close" together. */ if (ati_remote->old_data == data[2] && time_before(now, ati_remote->old_jiffies + msecs_to_jiffies(repeat_filter))) { ati_remote->repeat_count++; } else { ati_remote->repeat_count = 0; ati_remote->first_jiffies = now; } ati_remote->old_jiffies = now; /* Ensure we skip at least the 4 first duplicate events * (generated by a single keypress), and continue skipping * until repeat_delay msecs have passed. */ if (ati_remote->repeat_count > 0 && (ati_remote->repeat_count < 5 || time_before(now, ati_remote->first_jiffies + msecs_to_jiffies(repeat_delay)))) return; if (index >= 0) { input_event(dev, EV_KEY, ati_remote_tbl[index].code, 1); input_event(dev, EV_KEY, ati_remote_tbl[index].code, 0); } else { /* Not a mouse event, hand it to rc-core. */ int count = 1; if (wheel_keycode != KEY_RESERVED) { /* * This is a scrollwheel event, send the * scroll up (0x78) / down (0x70) scancode * repeatedly as many times as indicated by * rest of the scancode. */ count = (scancode & 0x07) + 1; scancode &= 0x78; } while (count--) { /* * We don't use the rc-core repeat handling yet as * it would cause ghost repeats which would be a * regression for this driver. */ rc_keydown_notimeout(ati_remote->rdev, RC_PROTO_OTHER, scancode, data[2]); rc_keyup(ati_remote->rdev); } goto nosync; } } else if (ati_remote_tbl[index].kind == KIND_ACCEL) { signed char dx = ati_remote_tbl[index].code >> 8; signed char dy = ati_remote_tbl[index].code & 255; /* * Other event kinds are from the directional control pad, and * have an acceleration factor applied to them. Without this * acceleration, the control pad is mostly unusable. */ int acc = ati_remote_compute_accel(ati_remote); if (dx) input_report_rel(dev, REL_X, dx * acc); if (dy) input_report_rel(dev, REL_Y, dy * acc); ati_remote->old_jiffies = jiffies; } else { dev_dbg(&ati_remote->interface->dev, "ati_remote kind=%d\n", ati_remote_tbl[index].kind); return; } input_sync(dev); nosync: ati_remote->old_data = data[2]; } /* * ati_remote_irq_in */ static void ati_remote_irq_in(struct urb *urb) { struct ati_remote *ati_remote = urb->context; int retval; switch (urb->status) { case 0: /* success */ ati_remote_input_report(urb); break; case -ECONNRESET: /* unlink */ case -ENOENT: case -ESHUTDOWN: dev_dbg(&ati_remote->interface->dev, "%s: urb error status, unlink?\n", __func__); return; default: /* error */ dev_dbg(&ati_remote->interface->dev, "%s: Nonzero urb status %d\n", __func__, urb->status); } retval = usb_submit_urb(urb, GFP_ATOMIC); if (retval) dev_err(&ati_remote->interface->dev, "%s: usb_submit_urb()=%d\n", __func__, retval); } /* * ati_remote_alloc_buffers */ static int ati_remote_alloc_buffers(struct usb_device *udev, struct ati_remote *ati_remote) { ati_remote->inbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC, &ati_remote->inbuf_dma); if (!ati_remote->inbuf) return -1; ati_remote->outbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC, &ati_remote->outbuf_dma); if (!ati_remote->outbuf) return -1; ati_remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL); if (!ati_remote->irq_urb) return -1; ati_remote->out_urb = usb_alloc_urb(0, GFP_KERNEL); if (!ati_remote->out_urb) return -1; return 0; } /* * ati_remote_free_buffers */ static void ati_remote_free_buffers(struct ati_remote *ati_remote) { usb_free_urb(ati_remote->irq_urb); usb_free_urb(ati_remote->out_urb); usb_free_coherent(ati_remote->udev, DATA_BUFSIZE, ati_remote->inbuf, ati_remote->inbuf_dma); usb_free_coherent(ati_remote->udev, DATA_BUFSIZE, ati_remote->outbuf, ati_remote->outbuf_dma); } static void ati_remote_input_init(struct ati_remote *ati_remote) { struct input_dev *idev = ati_remote->idev; int i; idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA); idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) if (ati_remote_tbl[i].kind == KIND_LITERAL || ati_remote_tbl[i].kind == KIND_FILTERED) __set_bit(ati_remote_tbl[i].code, idev->keybit); input_set_drvdata(idev, ati_remote); idev->open = ati_remote_input_open; idev->close = ati_remote_input_close; idev->name = ati_remote->mouse_name; idev->phys = ati_remote->mouse_phys; usb_to_input_id(ati_remote->udev, &idev->id); idev->dev.parent = &ati_remote->interface->dev; } static void ati_remote_rc_init(struct ati_remote *ati_remote) { struct rc_dev *rdev = ati_remote->rdev; rdev->priv = ati_remote; rdev->allowed_protocols = RC_PROTO_BIT_OTHER; rdev->driver_name = "ati_remote"; rdev->open = ati_remote_rc_open; rdev->close = ati_remote_rc_close; rdev->device_name = ati_remote->rc_name; rdev->input_phys = ati_remote->rc_phys; usb_to_input_id(ati_remote->udev, &rdev->input_id); rdev->dev.parent = &ati_remote->interface->dev; } static int ati_remote_initialize(struct ati_remote *ati_remote) { struct usb_device *udev = ati_remote->udev; int pipe, maxp; init_waitqueue_head(&ati_remote->wait); /* Set up irq_urb */ pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress); maxp = usb_maxpacket(udev, pipe); maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp; usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf, maxp, ati_remote_irq_in, ati_remote, ati_remote->endpoint_in->bInterval); ati_remote->irq_urb->transfer_dma = ati_remote->inbuf_dma; ati_remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; /* Set up out_urb */ pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress); maxp = usb_maxpacket(udev, pipe); maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp; usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf, maxp, ati_remote_irq_out, ati_remote, ati_remote->endpoint_out->bInterval); ati_remote->out_urb->transfer_dma = ati_remote->outbuf_dma; ati_remote->out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; /* send initialization strings */ if ((ati_remote_sendpacket(ati_remote, 0x8004, init1)) || (ati_remote_sendpacket(ati_remote, 0x8007, init2))) { dev_err(&ati_remote->interface->dev, "Initializing ati_remote hardware failed.\n"); return -EIO; } return 0; } /* * ati_remote_probe */ static int ati_remote_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_device *udev = interface_to_usbdev(interface); struct usb_host_interface *iface_host = interface->cur_altsetting; struct usb_endpoint_descriptor *endpoint_in, *endpoint_out; struct ati_receiver_type *type = (struct ati_receiver_type *)id->driver_info; struct ati_remote *ati_remote; struct input_dev *input_dev; struct device *device = &interface->dev; struct rc_dev *rc_dev; int err = -ENOMEM; if (iface_host->desc.bNumEndpoints != 2) { dev_err(device, "%s: Unexpected desc.bNumEndpoints\n", __func__); return -ENODEV; } endpoint_in = &iface_host->endpoint[0].desc; endpoint_out = &iface_host->endpoint[1].desc; if (!usb_endpoint_is_int_in(endpoint_in)) { dev_err(device, "%s: Unexpected endpoint_in\n", __func__); return -ENODEV; } if (le16_to_cpu(endpoint_in->wMaxPacketSize) == 0) { dev_err(device, "%s: endpoint_in message size==0?\n", __func__); return -ENODEV; } if (!usb_endpoint_is_int_out(endpoint_out)) { dev_err(device, "%s: Unexpected endpoint_out\n", __func__); return -ENODEV; } ati_remote = kzalloc(sizeof (struct ati_remote), GFP_KERNEL); rc_dev = rc_allocate_device(RC_DRIVER_SCANCODE); if (!ati_remote || !rc_dev) goto exit_free_dev_rdev; /* Allocate URB buffers, URBs */ if (ati_remote_alloc_buffers(udev, ati_remote)) goto exit_free_buffers; ati_remote->endpoint_in = endpoint_in; ati_remote->endpoint_out = endpoint_out; ati_remote->udev = udev; ati_remote->rdev = rc_dev; ati_remote->interface = interface; usb_make_path(udev, ati_remote->rc_phys, sizeof(ati_remote->rc_phys)); strscpy(ati_remote->mouse_phys, ati_remote->rc_phys, sizeof(ati_remote->mouse_phys)); strlcat(ati_remote->rc_phys, "/input0", sizeof(ati_remote->rc_phys)); strlcat(ati_remote->mouse_phys, "/input1", sizeof(ati_remote->mouse_phys)); snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name), "%s%s%s", udev->manufacturer ?: "", udev->manufacturer && udev->product ? " " : "", udev->product ?: ""); if (!strlen(ati_remote->rc_name)) snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name), DRIVER_DESC "(%04x,%04x)", le16_to_cpu(ati_remote->udev->descriptor.idVendor), le16_to_cpu(ati_remote->udev->descriptor.idProduct)); snprintf(ati_remote->mouse_name, sizeof(ati_remote->mouse_name), "%s mouse", ati_remote->rc_name); rc_dev->map_name = RC_MAP_ATI_X10; /* default map */ /* set default keymap according to receiver model */ if (type) { if (type->default_keymap) rc_dev->map_name = type->default_keymap; else if (type->get_default_keymap) rc_dev->map_name = type->get_default_keymap(interface); } ati_remote_rc_init(ati_remote); mutex_init(&ati_remote->open_mutex); /* Device Hardware Initialization - fills in ati_remote->idev from udev. */ err = ati_remote_initialize(ati_remote); if (err) goto exit_kill_urbs; /* Set up and register rc device */ err = rc_register_device(ati_remote->rdev); if (err) goto exit_kill_urbs; /* Set up and register mouse input device */ if (mouse) { input_dev = input_allocate_device(); if (!input_dev) { err = -ENOMEM; goto exit_unregister_device; } ati_remote->idev = input_dev; ati_remote_input_init(ati_remote); err = input_register_device(input_dev); if (err) goto exit_free_input_device; } usb_set_intfdata(interface, ati_remote); return 0; exit_free_input_device: input_free_device(input_dev); exit_unregister_device: rc_unregister_device(rc_dev); rc_dev = NULL; exit_kill_urbs: usb_kill_urb(ati_remote->irq_urb); usb_kill_urb(ati_remote->out_urb); exit_free_buffers: ati_remote_free_buffers(ati_remote); exit_free_dev_rdev: rc_free_device(rc_dev); kfree(ati_remote); return err; } /* * ati_remote_disconnect */ static void ati_remote_disconnect(struct usb_interface *interface) { struct ati_remote *ati_remote; ati_remote = usb_get_intfdata(interface); usb_set_intfdata(interface, NULL); if (!ati_remote) { dev_warn(&interface->dev, "%s - null device?\n", __func__); return; } usb_kill_urb(ati_remote->irq_urb); usb_kill_urb(ati_remote->out_urb); if (ati_remote->idev) input_unregister_device(ati_remote->idev); rc_unregister_device(ati_remote->rdev); ati_remote_free_buffers(ati_remote); kfree(ati_remote); } /* usb specific object to register with the usb subsystem */ static struct usb_driver ati_remote_driver = { .name = "ati_remote", .probe = ati_remote_probe, .disconnect = ati_remote_disconnect, .id_table = ati_remote_table, }; module_usb_driver(ati_remote_driver); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL");