diff options
Diffstat (limited to 'drivers/input/tablet/hanwang.c')
| -rw-r--r-- | drivers/input/tablet/hanwang.c | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/drivers/input/tablet/hanwang.c b/drivers/input/tablet/hanwang.c new file mode 100644 index 00000000..6504b627 --- /dev/null +++ b/drivers/input/tablet/hanwang.c @@ -0,0 +1,446 @@ +/* + * USB Hanwang tablet support + * + * Copyright (c) 2010 Xing Wei <weixing@hanwang.com.cn> + * + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/usb/input.h> + +#define DRIVER_AUTHOR "Xing Wei <weixing@hanwang.com.cn>" +#define DRIVER_DESC "USB Hanwang tablet driver" +#define DRIVER_LICENSE "GPL" + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE(DRIVER_LICENSE); + +#define USB_VENDOR_ID_HANWANG 0x0b57 +#define HANWANG_TABLET_INT_CLASS 0x0003 +#define HANWANG_TABLET_INT_SUB_CLASS 0x0001 +#define HANWANG_TABLET_INT_PROTOCOL 0x0002 + +#define ART_MASTER_PKGLEN_MAX 10 + +/* device IDs */ +#define STYLUS_DEVICE_ID 0x02 +#define TOUCH_DEVICE_ID 0x03 +#define CURSOR_DEVICE_ID 0x06 +#define ERASER_DEVICE_ID 0x0A +#define PAD_DEVICE_ID 0x0F + +/* match vendor and interface info */ +#define HANWANG_TABLET_DEVICE(vend, cl, sc, pr) \ + .match_flags = USB_DEVICE_ID_MATCH_VENDOR \ + | USB_DEVICE_ID_MATCH_INT_INFO, \ + .idVendor = (vend), \ + .bInterfaceClass = (cl), \ + .bInterfaceSubClass = (sc), \ + .bInterfaceProtocol = (pr) + +enum hanwang_tablet_type { + HANWANG_ART_MASTER_III, + HANWANG_ART_MASTER_HD, +}; + +struct hanwang { + unsigned char *data; + dma_addr_t data_dma; + struct input_dev *dev; + struct usb_device *usbdev; + struct urb *irq; + const struct hanwang_features *features; + unsigned int current_tool; + unsigned int current_id; + char name[64]; + char phys[32]; +}; + +struct hanwang_features { + unsigned short pid; + char *name; + enum hanwang_tablet_type type; + int pkg_len; + int max_x; + int max_y; + int max_tilt_x; + int max_tilt_y; + int max_pressure; +}; + +static const struct hanwang_features features_array[] = { + { 0x8528, "Hanwang Art Master III 0906", HANWANG_ART_MASTER_III, + ART_MASTER_PKGLEN_MAX, 0x5757, 0x3692, 0x3f, 0x7f, 2048 }, + { 0x8529, "Hanwang Art Master III 0604", HANWANG_ART_MASTER_III, + ART_MASTER_PKGLEN_MAX, 0x3d84, 0x2672, 0x3f, 0x7f, 2048 }, + { 0x852a, "Hanwang Art Master III 1308", HANWANG_ART_MASTER_III, + ART_MASTER_PKGLEN_MAX, 0x7f00, 0x4f60, 0x3f, 0x7f, 2048 }, + { 0x8401, "Hanwang Art Master HD 5012", HANWANG_ART_MASTER_HD, + ART_MASTER_PKGLEN_MAX, 0x678e, 0x4150, 0x3f, 0x7f, 1024 }, +}; + +static const int hw_eventtypes[] = { + EV_KEY, EV_ABS, EV_MSC, +}; + +static const int hw_absevents[] = { + ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL, + ABS_RX, ABS_RY, ABS_PRESSURE, ABS_MISC, +}; + +static const int hw_btnevents[] = { + BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER, + BTN_TOOL_MOUSE, BTN_TOOL_FINGER, + BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8, +}; + +static const int hw_mscevents[] = { + MSC_SERIAL, +}; + +static void hanwang_parse_packet(struct hanwang *hanwang) +{ + unsigned char *data = hanwang->data; + struct input_dev *input_dev = hanwang->dev; + struct usb_device *dev = hanwang->usbdev; + enum hanwang_tablet_type type = hanwang->features->type; + int i; + u16 x, y, p; + + switch (data[0]) { + case 0x02: /* data packet */ + switch (data[1]) { + case 0x80: /* tool prox out */ + hanwang->current_id = 0; + input_report_key(input_dev, hanwang->current_tool, 0); + break; + + case 0xc2: /* first time tool prox in */ + switch (data[3] & 0xf0) { + case 0x20: /* art_master III */ + case 0x30: /* art_master_HD */ + hanwang->current_id = STYLUS_DEVICE_ID; + hanwang->current_tool = BTN_TOOL_PEN; + input_report_key(input_dev, BTN_TOOL_PEN, 1); + break; + case 0xa0: /* art_master III */ + case 0xb0: /* art_master_HD */ + hanwang->current_id = ERASER_DEVICE_ID; + hanwang->current_tool = BTN_TOOL_RUBBER; + input_report_key(input_dev, BTN_TOOL_RUBBER, 1); + break; + default: + hanwang->current_id = 0; + dev_dbg(&dev->dev, + "unknown tablet tool %02x ", data[0]); + break; + } + break; + + default: /* tool data packet */ + x = (data[2] << 8) | data[3]; + y = (data[4] << 8) | data[5]; + + switch (type) { + case HANWANG_ART_MASTER_III: + p = (data[6] << 3) | + ((data[7] & 0xc0) >> 5) | + (data[1] & 0x01); + break; + + case HANWANG_ART_MASTER_HD: + p = (data[7] >> 6) | (data[6] << 2); + break; + + default: + p = 0; + break; + } + + input_report_abs(input_dev, ABS_X, + le16_to_cpup((__le16 *)&x)); + input_report_abs(input_dev, ABS_Y, + le16_to_cpup((__le16 *)&y)); + input_report_abs(input_dev, ABS_PRESSURE, + le16_to_cpup((__le16 *)&p)); + input_report_abs(input_dev, ABS_TILT_X, data[7] & 0x3f); + input_report_abs(input_dev, ABS_TILT_Y, data[8] & 0x7f); + input_report_key(input_dev, BTN_STYLUS, data[1] & 0x02); + input_report_key(input_dev, BTN_STYLUS2, data[1] & 0x04); + break; + } + input_report_abs(input_dev, ABS_MISC, hanwang->current_id); + input_event(input_dev, EV_MSC, MSC_SERIAL, + hanwang->features->pid); + break; + + case 0x0c: + /* roll wheel */ + hanwang->current_id = PAD_DEVICE_ID; + + switch (type) { + case HANWANG_ART_MASTER_III: + input_report_key(input_dev, BTN_TOOL_FINGER, data[1] || + data[2] || data[3]); + input_report_abs(input_dev, ABS_WHEEL, data[1]); + input_report_key(input_dev, BTN_0, data[2]); + for (i = 0; i < 8; i++) + input_report_key(input_dev, + BTN_1 + i, data[3] & (1 << i)); + break; + + case HANWANG_ART_MASTER_HD: + input_report_key(input_dev, BTN_TOOL_FINGER, data[1] || + data[2] || data[3] || data[4] || + data[5] || data[6]); + input_report_abs(input_dev, ABS_RX, + ((data[1] & 0x1f) << 8) | data[2]); + input_report_abs(input_dev, ABS_RY, + ((data[3] & 0x1f) << 8) | data[4]); + input_report_key(input_dev, BTN_0, data[5] & 0x01); + for (i = 0; i < 4; i++) { + input_report_key(input_dev, + BTN_1 + i, data[5] & (1 << i)); + input_report_key(input_dev, + BTN_5 + i, data[6] & (1 << i)); + } + break; + } + + input_report_abs(input_dev, ABS_MISC, hanwang->current_id); + input_event(input_dev, EV_MSC, MSC_SERIAL, 0xffffffff); + break; + + default: + dev_dbg(&dev->dev, "error packet %02x ", data[0]); + break; + } + + input_sync(input_dev); +} + +static void hanwang_irq(struct urb *urb) +{ + struct hanwang *hanwang = urb->context; + struct usb_device *dev = hanwang->usbdev; + int retval; + + switch (urb->status) { + case 0: + /* success */; + hanwang_parse_packet(hanwang); + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + dev_err(&dev->dev, "%s - urb shutting down with status: %d", + __func__, urb->status); + return; + default: + dev_err(&dev->dev, "%s - nonzero urb status received: %d", + __func__, urb->status); + break; + } + + retval = usb_submit_urb(urb, GFP_ATOMIC); + if (retval) + dev_err(&dev->dev, "%s - usb_submit_urb failed with result %d", + __func__, retval); +} + +static int hanwang_open(struct input_dev *dev) +{ + struct hanwang *hanwang = input_get_drvdata(dev); + + hanwang->irq->dev = hanwang->usbdev; + if (usb_submit_urb(hanwang->irq, GFP_KERNEL)) + return -EIO; + + return 0; +} + +static void hanwang_close(struct input_dev *dev) +{ + struct hanwang *hanwang = input_get_drvdata(dev); + + usb_kill_urb(hanwang->irq); +} + +static bool get_features(struct usb_device *dev, struct hanwang *hanwang) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(features_array); i++) { + if (le16_to_cpu(dev->descriptor.idProduct) == + features_array[i].pid) { + hanwang->features = &features_array[i]; + return true; + } + } + + return false; +} + + +static int hanwang_probe(struct usb_interface *intf, const struct usb_device_id *id) +{ + struct usb_device *dev = interface_to_usbdev(intf); + struct usb_endpoint_descriptor *endpoint; + struct hanwang *hanwang; + struct input_dev *input_dev; + int error; + int i; + + hanwang = kzalloc(sizeof(struct hanwang), GFP_KERNEL); + input_dev = input_allocate_device(); + if (!hanwang || !input_dev) { + error = -ENOMEM; + goto fail1; + } + + if (!get_features(dev, hanwang)) { + error = -ENXIO; + goto fail1; + } + + hanwang->data = usb_alloc_coherent(dev, hanwang->features->pkg_len, + GFP_KERNEL, &hanwang->data_dma); + if (!hanwang->data) { + error = -ENOMEM; + goto fail1; + } + + hanwang->irq = usb_alloc_urb(0, GFP_KERNEL); + if (!hanwang->irq) { + error = -ENOMEM; + goto fail2; + } + + hanwang->usbdev = dev; + hanwang->dev = input_dev; + + usb_make_path(dev, hanwang->phys, sizeof(hanwang->phys)); + strlcat(hanwang->phys, "/input0", sizeof(hanwang->phys)); + + strlcpy(hanwang->name, hanwang->features->name, sizeof(hanwang->name)); + input_dev->name = hanwang->name; + input_dev->phys = hanwang->phys; + usb_to_input_id(dev, &input_dev->id); + input_dev->dev.parent = &intf->dev; + + input_set_drvdata(input_dev, hanwang); + + input_dev->open = hanwang_open; + input_dev->close = hanwang_close; + + for (i = 0; i < ARRAY_SIZE(hw_eventtypes); ++i) + __set_bit(hw_eventtypes[i], input_dev->evbit); + + for (i = 0; i < ARRAY_SIZE(hw_absevents); ++i) + __set_bit(hw_absevents[i], input_dev->absbit); + + for (i = 0; i < ARRAY_SIZE(hw_btnevents); ++i) + __set_bit(hw_btnevents[i], input_dev->keybit); + + for (i = 0; i < ARRAY_SIZE(hw_mscevents); ++i) + __set_bit(hw_mscevents[i], input_dev->mscbit); + + input_set_abs_params(input_dev, ABS_X, + 0, hanwang->features->max_x, 4, 0); + input_set_abs_params(input_dev, ABS_Y, + 0, hanwang->features->max_y, 4, 0); + input_set_abs_params(input_dev, ABS_TILT_X, + 0, hanwang->features->max_tilt_x, 0, 0); + input_set_abs_params(input_dev, ABS_TILT_Y, + 0, hanwang->features->max_tilt_y, 0, 0); + input_set_abs_params(input_dev, ABS_PRESSURE, + 0, hanwang->features->max_pressure, 0, 0); + + endpoint = &intf->cur_altsetting->endpoint[0].desc; + usb_fill_int_urb(hanwang->irq, dev, + usb_rcvintpipe(dev, endpoint->bEndpointAddress), + hanwang->data, hanwang->features->pkg_len, + hanwang_irq, hanwang, endpoint->bInterval); + hanwang->irq->transfer_dma = hanwang->data_dma; + hanwang->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + + error = input_register_device(hanwang->dev); + if (error) + goto fail3; + + usb_set_intfdata(intf, hanwang); + + return 0; + + fail3: usb_free_urb(hanwang->irq); + fail2: usb_free_coherent(dev, hanwang->features->pkg_len, + hanwang->data, hanwang->data_dma); + fail1: input_free_device(input_dev); + kfree(hanwang); + return error; + +} + +static void hanwang_disconnect(struct usb_interface *intf) +{ + struct hanwang *hanwang = usb_get_intfdata(intf); + + input_unregister_device(hanwang->dev); + usb_free_urb(hanwang->irq); + usb_free_coherent(interface_to_usbdev(intf), + hanwang->features->pkg_len, hanwang->data, + hanwang->data_dma); + kfree(hanwang); + usb_set_intfdata(intf, NULL); +} + +static const struct usb_device_id hanwang_ids[] = { + { HANWANG_TABLET_DEVICE(USB_VENDOR_ID_HANWANG, HANWANG_TABLET_INT_CLASS, + HANWANG_TABLET_INT_SUB_CLASS, HANWANG_TABLET_INT_PROTOCOL) }, + {} +}; + +MODULE_DEVICE_TABLE(usb, hanwang_ids); + +static struct usb_driver hanwang_driver = { + .name = "hanwang", + .probe = hanwang_probe, + .disconnect = hanwang_disconnect, + .id_table = hanwang_ids, +}; + +static int __init hanwang_init(void) +{ + return usb_register(&hanwang_driver); +} + +static void __exit hanwang_exit(void) +{ + usb_deregister(&hanwang_driver); +} + +module_init(hanwang_init); +module_exit(hanwang_exit); |