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257 lines
6.7 KiB
257 lines
6.7 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (c) 2001-2005 Edouard TISSERANT <[email protected]> |
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* Copyright (c) 2004-2005 Stephane VOLTZ <[email protected]> |
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* |
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* USB Acecad "Acecad Flair" tablet support |
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* |
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* Changelog: |
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* v3.2 - Added sysfs support |
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*/ |
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/* |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/slab.h> |
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#include <linux/module.h> |
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#include <linux/usb/input.h> |
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MODULE_AUTHOR("Edouard TISSERANT <[email protected]>"); |
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MODULE_DESCRIPTION("USB Acecad Flair tablet driver"); |
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MODULE_LICENSE("GPL"); |
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#define USB_VENDOR_ID_ACECAD 0x0460 |
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#define USB_DEVICE_ID_FLAIR 0x0004 |
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#define USB_DEVICE_ID_302 0x0008 |
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struct usb_acecad { |
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char name[128]; |
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char phys[64]; |
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struct usb_interface *intf; |
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struct input_dev *input; |
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struct urb *irq; |
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unsigned char *data; |
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dma_addr_t data_dma; |
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}; |
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static void usb_acecad_irq(struct urb *urb) |
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{ |
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struct usb_acecad *acecad = urb->context; |
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unsigned char *data = acecad->data; |
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struct input_dev *dev = acecad->input; |
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struct usb_interface *intf = acecad->intf; |
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struct usb_device *udev = interface_to_usbdev(intf); |
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int prox, status; |
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switch (urb->status) { |
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case 0: |
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/* success */ |
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break; |
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case -ECONNRESET: |
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case -ENOENT: |
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case -ESHUTDOWN: |
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/* this urb is terminated, clean up */ |
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dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n", |
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__func__, urb->status); |
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return; |
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default: |
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dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n", |
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__func__, urb->status); |
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goto resubmit; |
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} |
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prox = (data[0] & 0x04) >> 2; |
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input_report_key(dev, BTN_TOOL_PEN, prox); |
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if (prox) { |
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int x = data[1] | (data[2] << 8); |
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int y = data[3] | (data[4] << 8); |
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/* Pressure should compute the same way for flair and 302 */ |
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int pressure = data[5] | (data[6] << 8); |
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int touch = data[0] & 0x01; |
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int stylus = (data[0] & 0x10) >> 4; |
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int stylus2 = (data[0] & 0x20) >> 5; |
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input_report_abs(dev, ABS_X, x); |
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input_report_abs(dev, ABS_Y, y); |
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input_report_abs(dev, ABS_PRESSURE, pressure); |
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input_report_key(dev, BTN_TOUCH, touch); |
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input_report_key(dev, BTN_STYLUS, stylus); |
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input_report_key(dev, BTN_STYLUS2, stylus2); |
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} |
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/* event termination */ |
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input_sync(dev); |
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resubmit: |
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status = usb_submit_urb(urb, GFP_ATOMIC); |
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if (status) |
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dev_err(&intf->dev, |
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"can't resubmit intr, %s-%s/input0, status %d\n", |
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udev->bus->bus_name, |
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udev->devpath, status); |
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} |
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static int usb_acecad_open(struct input_dev *dev) |
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{ |
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struct usb_acecad *acecad = input_get_drvdata(dev); |
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acecad->irq->dev = interface_to_usbdev(acecad->intf); |
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if (usb_submit_urb(acecad->irq, GFP_KERNEL)) |
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return -EIO; |
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return 0; |
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} |
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static void usb_acecad_close(struct input_dev *dev) |
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{ |
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struct usb_acecad *acecad = input_get_drvdata(dev); |
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usb_kill_urb(acecad->irq); |
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} |
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static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id) |
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{ |
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struct usb_device *dev = interface_to_usbdev(intf); |
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struct usb_host_interface *interface = intf->cur_altsetting; |
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struct usb_endpoint_descriptor *endpoint; |
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struct usb_acecad *acecad; |
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struct input_dev *input_dev; |
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int pipe, maxp; |
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int err; |
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if (interface->desc.bNumEndpoints != 1) |
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return -ENODEV; |
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endpoint = &interface->endpoint[0].desc; |
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if (!usb_endpoint_is_int_in(endpoint)) |
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return -ENODEV; |
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pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); |
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maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); |
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acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL); |
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input_dev = input_allocate_device(); |
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if (!acecad || !input_dev) { |
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err = -ENOMEM; |
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goto fail1; |
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} |
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acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma); |
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if (!acecad->data) { |
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err= -ENOMEM; |
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goto fail1; |
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} |
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acecad->irq = usb_alloc_urb(0, GFP_KERNEL); |
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if (!acecad->irq) { |
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err = -ENOMEM; |
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goto fail2; |
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} |
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acecad->intf = intf; |
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acecad->input = input_dev; |
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if (dev->manufacturer) |
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strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name)); |
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if (dev->product) { |
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if (dev->manufacturer) |
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strlcat(acecad->name, " ", sizeof(acecad->name)); |
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strlcat(acecad->name, dev->product, sizeof(acecad->name)); |
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} |
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usb_make_path(dev, acecad->phys, sizeof(acecad->phys)); |
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strlcat(acecad->phys, "/input0", sizeof(acecad->phys)); |
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input_dev->name = acecad->name; |
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input_dev->phys = acecad->phys; |
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usb_to_input_id(dev, &input_dev->id); |
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input_dev->dev.parent = &intf->dev; |
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input_set_drvdata(input_dev, acecad); |
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input_dev->open = usb_acecad_open; |
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input_dev->close = usb_acecad_close; |
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
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input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) | |
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BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) | |
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BIT_MASK(BTN_STYLUS2); |
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switch (id->driver_info) { |
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case 0: |
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input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0); |
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input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0); |
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input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0); |
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if (!strlen(acecad->name)) |
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snprintf(acecad->name, sizeof(acecad->name), |
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"USB Acecad Flair Tablet %04x:%04x", |
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le16_to_cpu(dev->descriptor.idVendor), |
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le16_to_cpu(dev->descriptor.idProduct)); |
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break; |
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case 1: |
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input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0); |
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input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0); |
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input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0); |
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if (!strlen(acecad->name)) |
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snprintf(acecad->name, sizeof(acecad->name), |
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"USB Acecad 302 Tablet %04x:%04x", |
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le16_to_cpu(dev->descriptor.idVendor), |
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le16_to_cpu(dev->descriptor.idProduct)); |
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break; |
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} |
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usb_fill_int_urb(acecad->irq, dev, pipe, |
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acecad->data, maxp > 8 ? 8 : maxp, |
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usb_acecad_irq, acecad, endpoint->bInterval); |
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acecad->irq->transfer_dma = acecad->data_dma; |
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acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
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err = input_register_device(acecad->input); |
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if (err) |
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goto fail3; |
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usb_set_intfdata(intf, acecad); |
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return 0; |
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fail3: usb_free_urb(acecad->irq); |
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fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma); |
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fail1: input_free_device(input_dev); |
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kfree(acecad); |
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return err; |
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} |
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static void usb_acecad_disconnect(struct usb_interface *intf) |
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{ |
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struct usb_acecad *acecad = usb_get_intfdata(intf); |
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struct usb_device *udev = interface_to_usbdev(intf); |
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usb_set_intfdata(intf, NULL); |
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input_unregister_device(acecad->input); |
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usb_free_urb(acecad->irq); |
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usb_free_coherent(udev, 8, acecad->data, acecad->data_dma); |
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kfree(acecad); |
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} |
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static const struct usb_device_id usb_acecad_id_table[] = { |
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{ USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 }, |
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{ USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(usb, usb_acecad_id_table); |
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static struct usb_driver usb_acecad_driver = { |
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.name = "usb_acecad", |
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.probe = usb_acecad_probe, |
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.disconnect = usb_acecad_disconnect, |
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.id_table = usb_acecad_id_table, |
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}; |
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module_usb_driver(usb_acecad_driver);
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