Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #include <linux/kernel.h> |
2 | #include <linux/slab.h> | |
3 | #include <linux/input.h> | |
4 | #include <linux/module.h> | |
5 | #include <linux/init.h> | |
6 | #include <linux/usb.h> | |
16a334c0 | 7 | #include <linux/usb_input.h> |
1da177e4 LT |
8 | #include <asm/unaligned.h> |
9 | #include <asm/byteorder.h> | |
10 | ||
11 | /* | |
12 | * Version Information | |
13 | * v0.0.1 - Original, extremely basic version, 2.4.xx only | |
14 | * v0.0.2 - Updated, works with 2.5.62 and 2.4.20; | |
15 | * - added pressure-threshold modules param code from | |
16 | * Alex Perry <alex.perry@ieee.org> | |
17 | */ | |
18 | ||
19 | #define DRIVER_VERSION "v0.0.2" | |
20 | #define DRIVER_AUTHOR "Josh Myer <josh@joshisanerd.com>" | |
21 | #define DRIVER_DESC "USB KB Gear JamStudio Tablet driver" | |
22 | #define DRIVER_LICENSE "GPL" | |
23 | ||
24 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
25 | MODULE_DESCRIPTION(DRIVER_DESC); | |
26 | MODULE_LICENSE(DRIVER_LICENSE); | |
27 | ||
28 | #define USB_VENDOR_ID_KBGEAR 0x084e | |
29 | ||
30 | static int kb_pressure_click = 0x10; | |
31 | module_param(kb_pressure_click, int, 0); | |
32 | MODULE_PARM_DESC(kb_pressure_click, "pressure threshold for clicks"); | |
33 | ||
34 | struct kbtab { | |
35 | signed char *data; | |
36 | dma_addr_t data_dma; | |
c5b7c7c3 | 37 | struct input_dev *dev; |
1da177e4 LT |
38 | struct usb_device *usbdev; |
39 | struct urb *irq; | |
1da177e4 LT |
40 | int x, y; |
41 | int button; | |
42 | int pressure; | |
43 | __u32 serial[2]; | |
44 | char phys[32]; | |
45 | }; | |
46 | ||
47 | static void kbtab_irq(struct urb *urb, struct pt_regs *regs) | |
48 | { | |
49 | struct kbtab *kbtab = urb->context; | |
50 | unsigned char *data = kbtab->data; | |
c5b7c7c3 | 51 | struct input_dev *dev = kbtab->dev; |
1da177e4 LT |
52 | int retval; |
53 | ||
54 | switch (urb->status) { | |
55 | case 0: | |
56 | /* success */ | |
57 | break; | |
58 | case -ECONNRESET: | |
59 | case -ENOENT: | |
60 | case -ESHUTDOWN: | |
61 | /* this urb is terminated, clean up */ | |
62 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); | |
63 | return; | |
64 | default: | |
65 | dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status); | |
66 | goto exit; | |
67 | } | |
68 | ||
69 | kbtab->x = le16_to_cpu(get_unaligned((__le16 *) &data[1])); | |
70 | kbtab->y = le16_to_cpu(get_unaligned((__le16 *) &data[3])); | |
71 | ||
72 | kbtab->pressure = (data[5]); | |
73 | ||
74 | input_report_key(dev, BTN_TOOL_PEN, 1); | |
75 | ||
76 | input_report_abs(dev, ABS_X, kbtab->x); | |
77 | input_report_abs(dev, ABS_Y, kbtab->y); | |
78 | ||
79 | /*input_report_key(dev, BTN_TOUCH , data[0] & 0x01);*/ | |
80 | input_report_key(dev, BTN_RIGHT, data[0] & 0x02); | |
81 | ||
05f091ab | 82 | if (-1 == kb_pressure_click) { |
1da177e4 LT |
83 | input_report_abs(dev, ABS_PRESSURE, kbtab->pressure); |
84 | } else { | |
85 | input_report_key(dev, BTN_LEFT, (kbtab->pressure > kb_pressure_click) ? 1 : 0); | |
86 | }; | |
05f091ab | 87 | |
1da177e4 LT |
88 | input_sync(dev); |
89 | ||
90 | exit: | |
91 | retval = usb_submit_urb (urb, GFP_ATOMIC); | |
92 | if (retval) | |
93 | err ("%s - usb_submit_urb failed with result %d", | |
94 | __FUNCTION__, retval); | |
95 | } | |
96 | ||
97 | static struct usb_device_id kbtab_ids[] = { | |
98 | { USB_DEVICE(USB_VENDOR_ID_KBGEAR, 0x1001), .driver_info = 0 }, | |
99 | { } | |
100 | }; | |
101 | ||
102 | MODULE_DEVICE_TABLE(usb, kbtab_ids); | |
103 | ||
104 | static int kbtab_open(struct input_dev *dev) | |
105 | { | |
106 | struct kbtab *kbtab = dev->private; | |
107 | ||
1da177e4 | 108 | kbtab->irq->dev = kbtab->usbdev; |
65cde54b | 109 | if (usb_submit_urb(kbtab->irq, GFP_KERNEL)) |
1da177e4 | 110 | return -EIO; |
1da177e4 LT |
111 | |
112 | return 0; | |
113 | } | |
114 | ||
115 | static void kbtab_close(struct input_dev *dev) | |
116 | { | |
117 | struct kbtab *kbtab = dev->private; | |
118 | ||
65cde54b | 119 | usb_kill_urb(kbtab->irq); |
1da177e4 LT |
120 | } |
121 | ||
122 | static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
123 | { | |
124 | struct usb_device *dev = interface_to_usbdev(intf); | |
125 | struct usb_endpoint_descriptor *endpoint; | |
126 | struct kbtab *kbtab; | |
c5b7c7c3 | 127 | struct input_dev *input_dev; |
1da177e4 | 128 | |
c5b7c7c3 DT |
129 | kbtab = kzalloc(sizeof(struct kbtab), GFP_KERNEL); |
130 | input_dev = input_allocate_device(); | |
131 | if (!kbtab || !input_dev) | |
132 | goto fail1; | |
1da177e4 LT |
133 | |
134 | kbtab->data = usb_buffer_alloc(dev, 8, GFP_KERNEL, &kbtab->data_dma); | |
c5b7c7c3 DT |
135 | if (!kbtab->data) |
136 | goto fail1; | |
1da177e4 LT |
137 | |
138 | kbtab->irq = usb_alloc_urb(0, GFP_KERNEL); | |
c5b7c7c3 DT |
139 | if (!kbtab->irq) |
140 | goto fail2; | |
1da177e4 | 141 | |
c5b7c7c3 DT |
142 | kbtab->usbdev = dev; |
143 | kbtab->dev = input_dev; | |
05f091ab | 144 | |
c5b7c7c3 DT |
145 | usb_make_path(dev, kbtab->phys, sizeof(kbtab->phys)); |
146 | strlcat(kbtab->phys, "/input0", sizeof(kbtab->phys)); | |
1da177e4 | 147 | |
c5b7c7c3 DT |
148 | input_dev->name = "KB Gear Tablet"; |
149 | input_dev->phys = kbtab->phys; | |
150 | usb_to_input_id(dev, &input_dev->id); | |
151 | input_dev->cdev.dev = &intf->dev; | |
152 | input_dev->private = kbtab; | |
1da177e4 | 153 | |
c5b7c7c3 DT |
154 | input_dev->open = kbtab_open; |
155 | input_dev->close = kbtab_close; | |
1da177e4 | 156 | |
c5b7c7c3 DT |
157 | input_dev->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_MSC); |
158 | input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE); | |
159 | input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_PEN) | BIT(BTN_TOUCH); | |
160 | input_dev->mscbit[0] |= BIT(MSC_SERIAL); | |
161 | input_set_abs_params(input_dev, ABS_X, 0, 0x2000, 4, 0); | |
19947544 | 162 | input_set_abs_params(input_dev, ABS_Y, 0, 0x1750, 4, 0); |
c5b7c7c3 | 163 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xff, 0, 0); |
1da177e4 LT |
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 | ||
c5b7c7c3 | 174 | input_register_device(kbtab->dev); |
1da177e4 LT |
175 | |
176 | usb_set_intfdata(intf, kbtab); | |
1da177e4 | 177 | return 0; |
c5b7c7c3 DT |
178 | |
179 | fail2: usb_buffer_free(dev, 10, kbtab->data, kbtab->data_dma); | |
180 | fail1: input_free_device(input_dev); | |
181 | kfree(kbtab); | |
182 | return -ENOMEM; | |
1da177e4 LT |
183 | } |
184 | ||
185 | static void kbtab_disconnect(struct usb_interface *intf) | |
186 | { | |
c5b7c7c3 | 187 | struct kbtab *kbtab = usb_get_intfdata(intf); |
1da177e4 LT |
188 | |
189 | usb_set_intfdata(intf, NULL); | |
190 | if (kbtab) { | |
191 | usb_kill_urb(kbtab->irq); | |
c5b7c7c3 | 192 | input_unregister_device(kbtab->dev); |
1da177e4 LT |
193 | usb_free_urb(kbtab->irq); |
194 | usb_buffer_free(interface_to_usbdev(intf), 10, kbtab->data, kbtab->data_dma); | |
195 | kfree(kbtab); | |
196 | } | |
197 | } | |
198 | ||
199 | static struct usb_driver kbtab_driver = { | |
1da177e4 LT |
200 | .name = "kbtab", |
201 | .probe = kbtab_probe, | |
202 | .disconnect = kbtab_disconnect, | |
203 | .id_table = kbtab_ids, | |
204 | }; | |
205 | ||
206 | static int __init kbtab_init(void) | |
207 | { | |
208 | int retval; | |
209 | retval = usb_register(&kbtab_driver); | |
210 | if (retval) | |
211 | goto out; | |
212 | info(DRIVER_VERSION ":" DRIVER_DESC); | |
213 | out: | |
214 | return retval; | |
215 | } | |
216 | ||
217 | static void __exit kbtab_exit(void) | |
218 | { | |
219 | usb_deregister(&kbtab_driver); | |
220 | } | |
221 | ||
222 | module_init(kbtab_init); | |
223 | module_exit(kbtab_exit); |