Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <linux/kernel.h> |
| 2 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | #include <linux/module.h> |
| 4 | #include <linux/init.h> |
David Brownell | ae0dadc | 2006-06-13 10:04:34 -0700 | [diff] [blame] | 5 | #include <linux/usb/input.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | #include <asm/unaligned.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | |
| 8 | /* |
| 9 | * Version Information |
| 10 | * v0.0.1 - Original, extremely basic version, 2.4.xx only |
| 11 | * v0.0.2 - Updated, works with 2.5.62 and 2.4.20; |
| 12 | * - added pressure-threshold modules param code from |
| 13 | * Alex Perry <alex.perry@ieee.org> |
| 14 | */ |
| 15 | |
| 16 | #define DRIVER_VERSION "v0.0.2" |
| 17 | #define DRIVER_AUTHOR "Josh Myer <josh@joshisanerd.com>" |
| 18 | #define DRIVER_DESC "USB KB Gear JamStudio Tablet driver" |
| 19 | #define DRIVER_LICENSE "GPL" |
| 20 | |
| 21 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 22 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 23 | MODULE_LICENSE(DRIVER_LICENSE); |
| 24 | |
| 25 | #define USB_VENDOR_ID_KBGEAR 0x084e |
| 26 | |
| 27 | static int kb_pressure_click = 0x10; |
| 28 | module_param(kb_pressure_click, int, 0); |
| 29 | MODULE_PARM_DESC(kb_pressure_click, "pressure threshold for clicks"); |
| 30 | |
| 31 | struct kbtab { |
Dmitry Torokhov | 4ee1fc8 | 2007-05-03 00:54:54 -0400 | [diff] [blame] | 32 | unsigned char *data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | dma_addr_t data_dma; |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 34 | struct input_dev *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | struct usb_device *usbdev; |
Greg Kroah-Hartman | ed2b2f2 | 2012-05-04 15:33:11 -0700 | [diff] [blame] | 36 | struct usb_interface *intf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | struct urb *irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | char phys[32]; |
| 39 | }; |
| 40 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 41 | static void kbtab_irq(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | { |
| 43 | struct kbtab *kbtab = urb->context; |
| 44 | unsigned char *data = kbtab->data; |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 45 | struct input_dev *dev = kbtab->dev; |
Dmitry Torokhov | f319209 | 2010-04-20 22:15:44 -0700 | [diff] [blame] | 46 | int pressure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | int retval; |
| 48 | |
| 49 | switch (urb->status) { |
| 50 | case 0: |
| 51 | /* success */ |
| 52 | break; |
| 53 | case -ECONNRESET: |
| 54 | case -ENOENT: |
| 55 | case -ESHUTDOWN: |
| 56 | /* this urb is terminated, clean up */ |
Greg Kroah-Hartman | ed2b2f2 | 2012-05-04 15:33:11 -0700 | [diff] [blame] | 57 | dev_dbg(&kbtab->intf->dev, |
| 58 | "%s - urb shutting down with status: %d\n", |
Greg Kroah-Hartman | 6d0f7dc | 2012-05-01 21:33:20 -0700 | [diff] [blame] | 59 | __func__, urb->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | return; |
| 61 | default: |
Greg Kroah-Hartman | ed2b2f2 | 2012-05-04 15:33:11 -0700 | [diff] [blame] | 62 | dev_dbg(&kbtab->intf->dev, |
| 63 | "%s - nonzero urb status received: %d\n", |
Greg Kroah-Hartman | 6d0f7dc | 2012-05-01 21:33:20 -0700 | [diff] [blame] | 64 | __func__, urb->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | goto exit; |
| 66 | } |
| 67 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | input_report_key(dev, BTN_TOOL_PEN, 1); |
| 70 | |
Dmitry Torokhov | f319209 | 2010-04-20 22:15:44 -0700 | [diff] [blame] | 71 | input_report_abs(dev, ABS_X, get_unaligned_le16(&data[1])); |
| 72 | input_report_abs(dev, ABS_Y, get_unaligned_le16(&data[3])); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
| 74 | /*input_report_key(dev, BTN_TOUCH , data[0] & 0x01);*/ |
| 75 | input_report_key(dev, BTN_RIGHT, data[0] & 0x02); |
| 76 | |
Dmitry Torokhov | f319209 | 2010-04-20 22:15:44 -0700 | [diff] [blame] | 77 | pressure = data[5]; |
| 78 | if (kb_pressure_click == -1) |
| 79 | input_report_abs(dev, ABS_PRESSURE, pressure); |
| 80 | else |
| 81 | input_report_key(dev, BTN_LEFT, pressure > kb_pressure_click ? 1 : 0); |
Dmitry Torokhov | 05f091ab | 2005-05-29 02:29:01 -0500 | [diff] [blame] | 82 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | input_sync(dev); |
| 84 | |
| 85 | exit: |
Dmitry Torokhov | f319209 | 2010-04-20 22:15:44 -0700 | [diff] [blame] | 86 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | if (retval) |
Greg Kroah-Hartman | ed2b2f2 | 2012-05-04 15:33:11 -0700 | [diff] [blame] | 88 | dev_err(&kbtab->intf->dev, |
Greg Kroah-Hartman | 202712c | 2012-04-25 14:48:41 -0700 | [diff] [blame] | 89 | "%s - usb_submit_urb failed with result %d\n", |
| 90 | __func__, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | static struct usb_device_id kbtab_ids[] = { |
| 94 | { USB_DEVICE(USB_VENDOR_ID_KBGEAR, 0x1001), .driver_info = 0 }, |
| 95 | { } |
| 96 | }; |
| 97 | |
| 98 | MODULE_DEVICE_TABLE(usb, kbtab_ids); |
| 99 | |
| 100 | static int kbtab_open(struct input_dev *dev) |
| 101 | { |
Dmitry Torokhov | 7791bda | 2007-04-12 01:34:39 -0400 | [diff] [blame] | 102 | struct kbtab *kbtab = input_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | kbtab->irq->dev = kbtab->usbdev; |
Dmitry Torokhov | 65cde54 | 2005-05-29 02:29:38 -0500 | [diff] [blame] | 105 | if (usb_submit_urb(kbtab->irq, GFP_KERNEL)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | static void kbtab_close(struct input_dev *dev) |
| 112 | { |
Dmitry Torokhov | 7791bda | 2007-04-12 01:34:39 -0400 | [diff] [blame] | 113 | struct kbtab *kbtab = input_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | |
Dmitry Torokhov | 65cde54 | 2005-05-29 02:29:38 -0500 | [diff] [blame] | 115 | usb_kill_urb(kbtab->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | } |
| 117 | |
| 118 | static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *id) |
| 119 | { |
| 120 | struct usb_device *dev = interface_to_usbdev(intf); |
| 121 | struct usb_endpoint_descriptor *endpoint; |
| 122 | struct kbtab *kbtab; |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 123 | struct input_dev *input_dev; |
Dmitry Torokhov | 5014186 | 2007-04-12 01:33:39 -0400 | [diff] [blame] | 124 | int error = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 126 | kbtab = kzalloc(sizeof(struct kbtab), GFP_KERNEL); |
| 127 | input_dev = input_allocate_device(); |
| 128 | if (!kbtab || !input_dev) |
| 129 | goto fail1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
Daniel Mack | 997ea58 | 2010-04-12 13:17:25 +0200 | [diff] [blame] | 131 | kbtab->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &kbtab->data_dma); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 132 | if (!kbtab->data) |
| 133 | goto fail1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
| 135 | kbtab->irq = usb_alloc_urb(0, GFP_KERNEL); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 136 | if (!kbtab->irq) |
| 137 | goto fail2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | kbtab->usbdev = dev; |
Greg Kroah-Hartman | ed2b2f2 | 2012-05-04 15:33:11 -0700 | [diff] [blame] | 140 | kbtab->intf = intf; |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 141 | kbtab->dev = input_dev; |
| 142 | |
| 143 | usb_make_path(dev, kbtab->phys, sizeof(kbtab->phys)); |
| 144 | strlcat(kbtab->phys, "/input0", sizeof(kbtab->phys)); |
| 145 | |
| 146 | input_dev->name = "KB Gear Tablet"; |
| 147 | input_dev->phys = kbtab->phys; |
| 148 | usb_to_input_id(dev, &input_dev->id); |
Dmitry Torokhov | c0f82d5 | 2007-04-12 01:35:03 -0400 | [diff] [blame] | 149 | input_dev->dev.parent = &intf->dev; |
Dmitry Torokhov | 7791bda | 2007-04-12 01:34:39 -0400 | [diff] [blame] | 150 | |
| 151 | input_set_drvdata(input_dev, kbtab); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 152 | |
| 153 | input_dev->open = kbtab_open; |
| 154 | input_dev->close = kbtab_close; |
| 155 | |
Dmitry Torokhov | f319209 | 2010-04-20 22:15:44 -0700 | [diff] [blame] | 156 | input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
| 157 | input_dev->keybit[BIT_WORD(BTN_LEFT)] |= |
| 158 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); |
| 159 | input_dev->keybit[BIT_WORD(BTN_DIGI)] |= |
| 160 | BIT_MASK(BTN_TOOL_PEN) | BIT_MASK(BTN_TOUCH); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 161 | input_set_abs_params(input_dev, ABS_X, 0, 0x2000, 4, 0); |
Dmitry Torokhov | 1994754 | 2005-12-29 22:19:07 -0500 | [diff] [blame] | 162 | input_set_abs_params(input_dev, ABS_Y, 0, 0x1750, 4, 0); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 163 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xff, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
| 165 | endpoint = &intf->cur_altsetting->endpoint[0].desc; |
| 166 | |
| 167 | usb_fill_int_urb(kbtab->irq, dev, |
| 168 | usb_rcvintpipe(dev, endpoint->bEndpointAddress), |
| 169 | kbtab->data, 8, |
| 170 | kbtab_irq, kbtab, endpoint->bInterval); |
| 171 | kbtab->irq->transfer_dma = kbtab->data_dma; |
| 172 | kbtab->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| 173 | |
Dmitry Torokhov | 5014186 | 2007-04-12 01:33:39 -0400 | [diff] [blame] | 174 | error = input_register_device(kbtab->dev); |
| 175 | if (error) |
| 176 | goto fail3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
| 178 | usb_set_intfdata(intf, kbtab); |
Dmitry Torokhov | 5014186 | 2007-04-12 01:33:39 -0400 | [diff] [blame] | 179 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | return 0; |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 181 | |
Dmitry Torokhov | 5014186 | 2007-04-12 01:33:39 -0400 | [diff] [blame] | 182 | fail3: usb_free_urb(kbtab->irq); |
Linus Torvalds | 7a9b149 | 2010-05-20 21:26:12 -0700 | [diff] [blame] | 183 | fail2: usb_free_coherent(dev, 8, kbtab->data, kbtab->data_dma); |
Dmitry Torokhov | 5014186 | 2007-04-12 01:33:39 -0400 | [diff] [blame] | 184 | fail1: input_free_device(input_dev); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 185 | kfree(kbtab); |
Dmitry Torokhov | 5014186 | 2007-04-12 01:33:39 -0400 | [diff] [blame] | 186 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | static void kbtab_disconnect(struct usb_interface *intf) |
| 190 | { |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 191 | struct kbtab *kbtab = usb_get_intfdata(intf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | |
| 193 | usb_set_intfdata(intf, NULL); |
Dmitry Torokhov | 331cb02 | 2010-04-20 22:06:53 -0700 | [diff] [blame] | 194 | |
| 195 | input_unregister_device(kbtab->dev); |
| 196 | usb_free_urb(kbtab->irq); |
Linus Torvalds | 7a9b149 | 2010-05-20 21:26:12 -0700 | [diff] [blame] | 197 | usb_free_coherent(kbtab->usbdev, 8, kbtab->data, kbtab->data_dma); |
Dmitry Torokhov | 331cb02 | 2010-04-20 22:06:53 -0700 | [diff] [blame] | 198 | kfree(kbtab); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | static struct usb_driver kbtab_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | .name = "kbtab", |
| 203 | .probe = kbtab_probe, |
| 204 | .disconnect = kbtab_disconnect, |
| 205 | .id_table = kbtab_ids, |
| 206 | }; |
| 207 | |
Greg Kroah-Hartman | 08642e7 | 2011-11-18 09:48:31 -0800 | [diff] [blame] | 208 | module_usb_driver(kbtab_driver); |