/* * ati_remote2 - ATI/Philips USB RF remote driver * * Copyright (C) 2005 Ville Syrjala <syrjala@sci.fi> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation. */ #include <linux/usb/input.h> #define DRIVER_DESC "ATI/Philips USB RF remote driver" #define DRIVER_VERSION "0.1" MODULE_DESCRIPTION(DRIVER_DESC); MODULE_VERSION(DRIVER_VERSION); MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>"); MODULE_LICENSE("GPL"); static unsigned int mode_mask = 0x1F; module_param(mode_mask, uint, 0644); MODULE_PARM_DESC(mode_mask, "Bitmask of modes to accept <4:PC><3:AUX4><2:AUX3><1:AUX2><0:AUX1>"); static struct usb_device_id ati_remote2_id_table[] = { { USB_DEVICE(0x0471, 0x0602) }, /* ATI Remote Wonder II */ { } }; MODULE_DEVICE_TABLE(usb, ati_remote2_id_table); static struct { int hw_code; int key_code; } ati_remote2_key_table[] = { { 0x00, KEY_0 }, { 0x01, KEY_1 }, { 0x02, KEY_2 }, { 0x03, KEY_3 }, { 0x04, KEY_4 }, { 0x05, KEY_5 }, { 0x06, KEY_6 }, { 0x07, KEY_7 }, { 0x08, KEY_8 }, { 0x09, KEY_9 }, { 0x0c, KEY_POWER }, { 0x0d, KEY_MUTE }, { 0x10, KEY_VOLUMEUP }, { 0x11, KEY_VOLUMEDOWN }, { 0x20, KEY_CHANNELUP }, { 0x21, KEY_CHANNELDOWN }, { 0x28, KEY_FORWARD }, { 0x29, KEY_REWIND }, { 0x2c, KEY_PLAY }, { 0x30, KEY_PAUSE }, { 0x31, KEY_STOP }, { 0x37, KEY_RECORD }, { 0x38, KEY_DVD }, { 0x39, KEY_TV }, { 0x54, KEY_MENU }, { 0x58, KEY_UP }, { 0x59, KEY_DOWN }, { 0x5a, KEY_LEFT }, { 0x5b, KEY_RIGHT }, { 0x5c, KEY_OK }, { 0x78, KEY_A }, { 0x79, KEY_B }, { 0x7a, KEY_C }, { 0x7b, KEY_D }, { 0x7c, KEY_E }, { 0x7d, KEY_F }, { 0x82, KEY_ENTER }, { 0x8e, KEY_VENDOR }, { 0x96, KEY_COFFEE }, { 0xa9, BTN_LEFT }, { 0xaa, BTN_RIGHT }, { 0xbe, KEY_QUESTION }, { 0xd5, KEY_FRONT }, { 0xd0, KEY_EDIT }, { 0xf9, KEY_INFO }, { (0x00 << 8) | 0x3f, KEY_PROG1 }, { (0x01 << 8) | 0x3f, KEY_PROG2 }, { (0x02 << 8) | 0x3f, KEY_PROG3 }, { (0x03 << 8) | 0x3f, KEY_PROG4 }, { (0x04 << 8) | 0x3f, KEY_PC }, { 0, KEY_RESERVED } }; struct ati_remote2 { struct input_dev *idev; struct usb_device *udev; struct usb_interface *intf[2]; struct usb_endpoint_descriptor *ep[2]; struct urb *urb[2]; void *buf[2]; dma_addr_t buf_dma[2]; unsigned long jiffies; int mode; char name[64]; char phys[64]; }; static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id); static void ati_remote2_disconnect(struct usb_interface *interface); static struct usb_driver ati_remote2_driver = { .name = "ati_remote2", .probe = ati_remote2_probe, .disconnect = ati_remote2_disconnect, .id_table = ati_remote2_id_table, }; static int ati_remote2_open(struct input_dev *idev) { struct ati_remote2 *ar2 = idev->private; int r; r = usb_submit_urb(ar2->urb[0], GFP_KERNEL); if (r) { dev_err(&ar2->intf[0]->dev, "%s: usb_submit_urb() = %d\n", __FUNCTION__, r); return r; } r = usb_submit_urb(ar2->urb[1], GFP_KERNEL); if (r) { usb_kill_urb(ar2->urb[0]); dev_err(&ar2->intf[1]->dev, "%s: usb_submit_urb() = %d\n", __FUNCTION__, r); return r; } return 0; } static void ati_remote2_close(struct input_dev *idev) { struct ati_remote2 *ar2 = idev->private; usb_kill_urb(ar2->urb[0]); usb_kill_urb(ar2->urb[1]); } static void ati_remote2_input_mouse(struct ati_remote2 *ar2) { struct input_dev *idev = ar2->idev; u8 *data = ar2->buf[0]; if (data[0] > 4) { dev_err(&ar2->intf[0]->dev, "Unknown mode byte (%02x %02x %02x %02x)\n", data[3], data[2], data[1], data[0]); return; } if (!((1 << data[0]) & mode_mask)) return; input_event(idev, EV_REL, REL_X, (s8) data[1]); input_event(idev, EV_REL, REL_Y, (s8) data[2]); input_sync(idev); } static int ati_remote2_lookup(unsigned int hw_code) { int i; for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++) if (ati_remote2_key_table[i].hw_code == hw_code) return i; return -1; } static void ati_remote2_input_key(struct ati_remote2 *ar2) { struct input_dev *idev = ar2->idev; u8 *data = ar2->buf[1]; int hw_code, index; if (data[0] > 4) { dev_err(&ar2->intf[1]->dev, "Unknown mode byte (%02x %02x %02x %02x)\n", data[3], data[2], data[1], data[0]); return; } hw_code = data[2]; /* * Mode keys (AUX1-AUX4, PC) all generate the same code byte. * Use the mode byte to figure out which one was pressed. */ if (hw_code == 0x3f) { /* * For some incomprehensible reason the mouse pad generates * events which look identical to the events from the last * pressed mode key. Naturally we don't want to generate key * events for the mouse pad so we filter out any subsequent * events from the same mode key. */ if (ar2->mode == data[0]) return; if (data[1] == 0) ar2->mode = data[0]; hw_code |= data[0] << 8; } if (!((1 << data[0]) & mode_mask)) return; index = ati_remote2_lookup(hw_code); if (index < 0) { dev_err(&ar2->intf[1]->dev, "Unknown code byte (%02x %02x %02x %02x)\n", data[3], data[2], data[1], data[0]); return; } switch (data[1]) { case 0: /* release */ break; case 1: /* press */ ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_DELAY]); break; case 2: /* repeat */ /* No repeat for mouse buttons. */ if (ati_remote2_key_table[index].key_code == BTN_LEFT || ati_remote2_key_table[index].key_code == BTN_RIGHT) return; if (!time_after_eq(jiffies, ar2->jiffies)) return; ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_PERIOD]); break; default: dev_err(&ar2->intf[1]->dev, "Unknown state byte (%02x %02x %02x %02x)\n", data[3], data[2], data[1], data[0]); return; } input_event(idev, EV_KEY, ati_remote2_key_table[index].key_code, data[1]); input_sync(idev); } static void ati_remote2_complete_mouse(struct urb *urb) { struct ati_remote2 *ar2 = urb->context; int r; switch (urb->status) { case 0: ati_remote2_input_mouse(ar2); break; case -ENOENT: case -EILSEQ: case -ECONNRESET: case -ESHUTDOWN: dev_dbg(&ar2->intf[0]->dev, "%s(): urb status = %d\n", __FUNCTION__, urb->status); return; default: dev_err(&ar2->intf[0]->dev, "%s(): urb status = %d\n", __FUNCTION__, urb->status); } r = usb_submit_urb(urb, GFP_ATOMIC); if (r) dev_err(&ar2->intf[0]->dev, "%s(): usb_submit_urb() = %d\n", __FUNCTION__, r); } static void ati_remote2_complete_key(struct urb *urb) { struct ati_remote2 *ar2 = urb->context; int r; switch (urb->status) { case 0: ati_remote2_input_key(ar2); break; case -ENOENT: case -EILSEQ: case -ECONNRESET: case -ESHUTDOWN: dev_dbg(&ar2->intf[1]->dev, "%s(): urb status = %d\n", __FUNCTION__, urb->status); return; default: dev_err(&ar2->intf[1]->dev, "%s(): urb status = %d\n", __FUNCTION__, urb->status); } r = usb_submit_urb(urb, GFP_ATOMIC); if (r) dev_err(&ar2->intf[1]->dev, "%s(): usb_submit_urb() = %d\n", __FUNCTION__, r); } static int ati_remote2_input_init(struct ati_remote2 *ar2) { struct input_dev *idev; int i; idev = input_allocate_device(); if (!idev) return -ENOMEM; ar2->idev = idev; idev->private = ar2; idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_REL); idev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT); idev->relbit[0] = BIT(REL_X) | BIT(REL_Y); for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++) set_bit(ati_remote2_key_table[i].key_code, idev->keybit); idev->rep[REP_DELAY] = 250; idev->rep[REP_PERIOD] = 33; idev->open = ati_remote2_open; idev->close = ati_remote2_close; idev->name = ar2->name; idev->phys = ar2->phys; usb_to_input_id(ar2->udev, &idev->id); idev->cdev.dev = &ar2->udev->dev; i = input_register_device(idev); if (i) input_free_device(idev); return i; } static int ati_remote2_urb_init(struct ati_remote2 *ar2) { struct usb_device *udev = ar2->udev; int i, pipe, maxp; for (i = 0; i < 2; i++) { ar2->buf[i] = usb_buffer_alloc(udev, 4, GFP_KERNEL, &ar2->buf_dma[i]); if (!ar2->buf[i]) return -ENOMEM; ar2->urb[i] = usb_alloc_urb(0, GFP_KERNEL); if (!ar2->urb[i]) return -ENOMEM; pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress); maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); maxp = maxp > 4 ? 4 : maxp; usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp, i ? ati_remote2_complete_key : ati_remote2_complete_mouse, ar2, ar2->ep[i]->bInterval); ar2->urb[i]->transfer_dma = ar2->buf_dma[i]; ar2->urb[i]->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; } return 0; } static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2) { int i; for (i = 0; i < 2; i++) { usb_free_urb(ar2->urb[i]); if (ar2->buf[i]) usb_buffer_free(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]); } } static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_device *udev = interface_to_usbdev(interface); struct usb_host_interface *alt = interface->cur_altsetting; struct ati_remote2 *ar2; int r; if (alt->desc.bInterfaceNumber) return -ENODEV; ar2 = kzalloc(sizeof (struct ati_remote2), GFP_KERNEL); if (!ar2) return -ENOMEM; ar2->udev = udev; ar2->intf[0] = interface; ar2->ep[0] = &alt->endpoint[0].desc; ar2->intf[1] = usb_ifnum_to_if(udev, 1); r = usb_driver_claim_interface(&ati_remote2_driver, ar2->intf[1], ar2); if (r) goto fail1; alt = ar2->intf[1]->cur_altsetting; ar2->ep[1] = &alt->endpoint[0].desc; r = ati_remote2_urb_init(ar2); if (r) goto fail2; usb_make_path(udev, ar2->phys, sizeof(ar2->phys)); strlcat(ar2->phys, "/input0", sizeof(ar2->phys)); strlcat(ar2->name, "ATI Remote Wonder II", sizeof(ar2->name)); r = ati_remote2_input_init(ar2); if (r) goto fail2; usb_set_intfdata(interface, ar2); return 0; fail2: ati_remote2_urb_cleanup(ar2); usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]); fail1: kfree(ar2); return r; } static void ati_remote2_disconnect(struct usb_interface *interface) { struct ati_remote2 *ar2; struct usb_host_interface *alt = interface->cur_altsetting; if (alt->desc.bInterfaceNumber) return; ar2 = usb_get_intfdata(interface); usb_set_intfdata(interface, NULL); input_unregister_device(ar2->idev); ati_remote2_urb_cleanup(ar2); usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]); kfree(ar2); } static int __init ati_remote2_init(void) { int r; r = usb_register(&ati_remote2_driver); if (r) printk(KERN_ERR "ati_remote2: usb_register() = %d\n", r); else printk(KERN_INFO "ati_remote2: " DRIVER_DESC " " DRIVER_VERSION "\n"); return r; } static void __exit ati_remote2_exit(void) { usb_deregister(&ati_remote2_driver); } module_init(ati_remote2_init); module_exit(ati_remote2_exit);