/* * Copyright (c) 2001-2005 Edouard TISSERANT <edouard.tisserant@wanadoo.fr> * Copyright (c) 2004-2005 Stephane VOLTZ <svoltz@numericable.fr> * * USB Acecad "Acecad Flair" tablet support * * Changelog: * v3.2 - Added sysfs support */ /* * 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/kernel.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/usb/input.h> /* * Version Information */ #define DRIVER_VERSION "v3.2" #define DRIVER_DESC "USB Acecad Flair tablet driver" #define DRIVER_LICENSE "GPL" #define DRIVER_AUTHOR "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>" MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE(DRIVER_LICENSE); #define USB_VENDOR_ID_ACECAD 0x0460 #define USB_DEVICE_ID_FLAIR 0x0004 #define USB_DEVICE_ID_302 0x0008 struct usb_acecad { char name[128]; char phys[64]; struct usb_device *usbdev; struct usb_interface *intf; struct input_dev *input; struct urb *irq; unsigned char *data; dma_addr_t data_dma; }; static void usb_acecad_irq(struct urb *urb) { struct usb_acecad *acecad = urb->context; unsigned char *data = acecad->data; struct input_dev *dev = acecad->input; struct usb_interface *intf = acecad->intf; int prox, status; switch (urb->status) { case 0: /* success */ break; case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: /* this urb is terminated, clean up */ dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n", __func__, urb->status); return; default: dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n", __func__, urb->status); goto resubmit; } prox = (data[0] & 0x04) >> 2; input_report_key(dev, BTN_TOOL_PEN, prox); if (prox) { int x = data[1] | (data[2] << 8); int y = data[3] | (data[4] << 8); /* Pressure should compute the same way for flair and 302 */ int pressure = data[5] | (data[6] << 8); int touch = data[0] & 0x01; int stylus = (data[0] & 0x10) >> 4; int stylus2 = (data[0] & 0x20) >> 5; input_report_abs(dev, ABS_X, x); input_report_abs(dev, ABS_Y, y); input_report_abs(dev, ABS_PRESSURE, pressure); input_report_key(dev, BTN_TOUCH, touch); input_report_key(dev, BTN_STYLUS, stylus); input_report_key(dev, BTN_STYLUS2, stylus2); } /* event termination */ input_sync(dev); resubmit: status = usb_submit_urb(urb, GFP_ATOMIC); if (status) dev_err(&intf->dev, "can't resubmit intr, %s-%s/input0, status %d\n", acecad->usbdev->bus->bus_name, acecad->usbdev->devpath, status); } static int usb_acecad_open(struct input_dev *dev) { struct usb_acecad *acecad = input_get_drvdata(dev); acecad->irq->dev = acecad->usbdev; if (usb_submit_urb(acecad->irq, GFP_KERNEL)) return -EIO; return 0; } static void usb_acecad_close(struct input_dev *dev) { struct usb_acecad *acecad = input_get_drvdata(dev); usb_kill_urb(acecad->irq); } static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *dev = interface_to_usbdev(intf); struct usb_host_interface *interface = intf->cur_altsetting; struct usb_endpoint_descriptor *endpoint; struct usb_acecad *acecad; struct input_dev *input_dev; int pipe, maxp; int err; if (interface->desc.bNumEndpoints != 1) return -ENODEV; endpoint = &interface->endpoint[0].desc; if (!usb_endpoint_is_int_in(endpoint)) return -ENODEV; pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL); input_dev = input_allocate_device(); if (!acecad || !input_dev) { err = -ENOMEM; goto fail1; } acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma); if (!acecad->data) { err= -ENOMEM; goto fail1; } acecad->irq = usb_alloc_urb(0, GFP_KERNEL); if (!acecad->irq) { err = -ENOMEM; goto fail2; } acecad->usbdev = dev; acecad->intf = intf; acecad->input = input_dev; if (dev->manufacturer) strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name)); if (dev->product) { if (dev->manufacturer) strlcat(acecad->name, " ", sizeof(acecad->name)); strlcat(acecad->name, dev->product, sizeof(acecad->name)); } usb_make_path(dev, acecad->phys, sizeof(acecad->phys)); strlcat(acecad->phys, "/input0", sizeof(acecad->phys)); input_dev->name = acecad->name; input_dev->phys = acecad->phys; usb_to_input_id(dev, &input_dev->id); input_dev->dev.parent = &intf->dev; input_set_drvdata(input_dev, acecad); input_dev->open = usb_acecad_open; input_dev->close = usb_acecad_close; input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) | BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) | BIT_MASK(BTN_STYLUS2); switch (id->driver_info) { case 0: input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0); input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0); input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0); if (!strlen(acecad->name)) snprintf(acecad->name, sizeof(acecad->name), "USB Acecad Flair Tablet %04x:%04x", le16_to_cpu(dev->descriptor.idVendor), le16_to_cpu(dev->descriptor.idProduct)); break; case 1: input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0); input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0); input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0); if (!strlen(acecad->name)) snprintf(acecad->name, sizeof(acecad->name), "USB Acecad 302 Tablet %04x:%04x", le16_to_cpu(dev->descriptor.idVendor), le16_to_cpu(dev->descriptor.idProduct)); break; } usb_fill_int_urb(acecad->irq, dev, pipe, acecad->data, maxp > 8 ? 8 : maxp, usb_acecad_irq, acecad, endpoint->bInterval); acecad->irq->transfer_dma = acecad->data_dma; acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; err = input_register_device(acecad->input); if (err) goto fail3; usb_set_intfdata(intf, acecad); return 0; fail3: usb_free_urb(acecad->irq); fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma); fail1: input_free_device(input_dev); kfree(acecad); return err; } static void usb_acecad_disconnect(struct usb_interface *intf) { struct usb_acecad *acecad = usb_get_intfdata(intf); usb_set_intfdata(intf, NULL); input_unregister_device(acecad->input); usb_free_urb(acecad->irq); usb_free_coherent(acecad->usbdev, 8, acecad->data, acecad->data_dma); kfree(acecad); } static struct usb_device_id usb_acecad_id_table [] = { { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 }, { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 }, { } }; MODULE_DEVICE_TABLE(usb, usb_acecad_id_table); static struct usb_driver usb_acecad_driver = { .name = "usb_acecad", .probe = usb_acecad_probe, .disconnect = usb_acecad_disconnect, .id_table = usb_acecad_id_table, }; module_usb_driver(usb_acecad_driver);