| /* |
| * ati_remote2 - ATI/Philips USB RF remote driver |
| * |
| * Copyright (C) 2005 Ville Syrjala <syrjala@sci.fi> |
| * Copyright (C) 2007 Peter Stokes <linux@dadeos.freeserve.co.uk> |
| * |
| * 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 "0.2" |
| |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_VERSION(DRIVER_VERSION); |
| MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>"); |
| MODULE_LICENSE("GPL"); |
| |
| /* |
| * ATI Remote Wonder II Channel Configuration |
| * |
| * The remote control can by assigned one of sixteen "channels" in order to facilitate |
| * the use of multiple remote controls within range of each other. |
| * A remote's "channel" may be altered by pressing and holding the "PC" button for |
| * approximately 3 seconds, after which the button will slowly flash the count of the |
| * currently configured "channel", using the numeric keypad enter a number between 1 and |
| * 16 and then the "PC" button again, the button will slowly flash the count of the |
| * newly configured "channel". |
| */ |
| |
| static unsigned int channel_mask = 0xFFFF; |
| module_param(channel_mask, uint, 0644); |
| MODULE_PARM_DESC(channel_mask, "Bitmask of channels to accept <15:Channel16>...<1:Channel2><0:Channel1>"); |
| |
| 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 = input_get_drvdata(idev); |
| 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 = input_get_drvdata(idev); |
| |
| 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]; |
| int channel, mode; |
| |
| channel = data[0] >> 4; |
| |
| if (!((1 << channel) & channel_mask)) |
| return; |
| |
| mode = data[0] & 0x0F; |
| |
| if (mode > 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 << mode) & 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 channel, mode, hw_code, index; |
| |
| channel = data[0] >> 4; |
| |
| if (!((1 << channel) & channel_mask)) |
| return; |
| |
| mode = data[0] & 0x0F; |
| |
| if (mode > 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 == mode) |
| return; |
| |
| if (data[1] == 0) |
| ar2->mode = mode; |
| |
| hw_code |= mode << 8; |
| } |
| |
| if (!((1 << mode) & 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, retval; |
| |
| idev = input_allocate_device(); |
| if (!idev) |
| return -ENOMEM; |
| |
| ar2->idev = idev; |
| input_set_drvdata(idev, 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; |
| |
| retval = input_register_device(idev); |
| if (retval) |
| input_free_device(idev); |
| |
| return retval; |
| } |
| |
| 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_setup(struct ati_remote2 *ar2) |
| { |
| int r, i, channel; |
| |
| /* |
| * Configure receiver to only accept input from remote "channel" |
| * channel == 0 -> Accept input from any remote channel |
| * channel == 1 -> Only accept input from remote channel 1 |
| * channel == 2 -> Only accept input from remote channel 2 |
| * ... |
| * channel == 16 -> Only accept input from remote channel 16 |
| */ |
| |
| channel = 0; |
| for (i = 0; i < 16; i++) { |
| if ((1 << i) & channel_mask) { |
| if (!(~(1 << i) & 0xFFFF & channel_mask)) |
| channel = i + 1; |
| break; |
| } |
| } |
| |
| r = usb_control_msg(ar2->udev, usb_sndctrlpipe(ar2->udev, 0), |
| 0x20, |
| USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, |
| channel, 0x0, NULL, 0, USB_CTRL_SET_TIMEOUT); |
| if (r) { |
| dev_err(&ar2->udev->dev, "%s - failed to set channel due to error: %d\n", |
| __FUNCTION__, r); |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| 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; |
| |
| r = ati_remote2_setup(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); |