![Ping Cheng](/assets/img/avatar_default.png)
This adds support for the two new multi-touch tablets. Signed-off-by: Ping Cheng <pinglinux@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
1451 lines
36 KiB
C
1451 lines
36 KiB
C
/*
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* drivers/input/tablet/wacom_sys.c
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*
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* USB Wacom tablet support - system specific code
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include "wacom_wac.h"
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#include "wacom.h"
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/* defines to get HID report descriptor */
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#define HID_DEVICET_HID (USB_TYPE_CLASS | 0x01)
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#define HID_DEVICET_REPORT (USB_TYPE_CLASS | 0x02)
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#define HID_USAGE_UNDEFINED 0x00
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#define HID_USAGE_PAGE 0x05
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#define HID_USAGE_PAGE_DIGITIZER 0x0d
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#define HID_USAGE_PAGE_DESKTOP 0x01
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#define HID_USAGE 0x09
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#define HID_USAGE_X 0x30
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#define HID_USAGE_Y 0x31
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#define HID_USAGE_X_TILT 0x3d
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#define HID_USAGE_Y_TILT 0x3e
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#define HID_USAGE_FINGER 0x22
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#define HID_USAGE_STYLUS 0x20
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#define HID_USAGE_CONTACTMAX 0x55
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#define HID_COLLECTION 0xa1
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#define HID_COLLECTION_LOGICAL 0x02
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#define HID_COLLECTION_END 0xc0
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enum {
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WCM_UNDEFINED = 0,
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WCM_DESKTOP,
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WCM_DIGITIZER,
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};
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struct hid_descriptor {
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struct usb_descriptor_header header;
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__le16 bcdHID;
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u8 bCountryCode;
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u8 bNumDescriptors;
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u8 bDescriptorType;
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__le16 wDescriptorLength;
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} __attribute__ ((packed));
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/* defines to get/set USB message */
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#define USB_REQ_GET_REPORT 0x01
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#define USB_REQ_SET_REPORT 0x09
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#define WAC_HID_FEATURE_REPORT 0x03
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#define WAC_MSG_RETRIES 5
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#define WAC_CMD_LED_CONTROL 0x20
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#define WAC_CMD_ICON_START 0x21
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#define WAC_CMD_ICON_XFER 0x23
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#define WAC_CMD_RETRIES 10
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static int wacom_get_report(struct usb_interface *intf, u8 type, u8 id,
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void *buf, size_t size, unsigned int retries)
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{
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struct usb_device *dev = interface_to_usbdev(intf);
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int retval;
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do {
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retval = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
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USB_REQ_GET_REPORT,
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USB_DIR_IN | USB_TYPE_CLASS |
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USB_RECIP_INTERFACE,
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(type << 8) + id,
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intf->altsetting[0].desc.bInterfaceNumber,
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buf, size, 100);
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} while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
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return retval;
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}
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static int wacom_set_report(struct usb_interface *intf, u8 type, u8 id,
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void *buf, size_t size, unsigned int retries)
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{
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struct usb_device *dev = interface_to_usbdev(intf);
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int retval;
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do {
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retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
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USB_REQ_SET_REPORT,
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USB_TYPE_CLASS | USB_RECIP_INTERFACE,
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(type << 8) + id,
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intf->altsetting[0].desc.bInterfaceNumber,
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buf, size, 1000);
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} while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
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return retval;
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}
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static void wacom_sys_irq(struct urb *urb)
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{
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struct wacom *wacom = urb->context;
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struct device *dev = &wacom->intf->dev;
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int retval;
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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(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(dev, "%s - nonzero urb status received: %d\n",
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__func__, urb->status);
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goto exit;
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}
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wacom_wac_irq(&wacom->wacom_wac, urb->actual_length);
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exit:
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usb_mark_last_busy(wacom->usbdev);
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retval = usb_submit_urb(urb, GFP_ATOMIC);
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if (retval)
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dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
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__func__, retval);
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}
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static int wacom_open(struct input_dev *dev)
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{
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struct wacom *wacom = input_get_drvdata(dev);
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int retval = 0;
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if (usb_autopm_get_interface(wacom->intf) < 0)
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return -EIO;
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mutex_lock(&wacom->lock);
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if (usb_submit_urb(wacom->irq, GFP_KERNEL)) {
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retval = -EIO;
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goto out;
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}
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wacom->open = true;
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wacom->intf->needs_remote_wakeup = 1;
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out:
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mutex_unlock(&wacom->lock);
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usb_autopm_put_interface(wacom->intf);
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return retval;
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}
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static void wacom_close(struct input_dev *dev)
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{
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struct wacom *wacom = input_get_drvdata(dev);
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int autopm_error;
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autopm_error = usb_autopm_get_interface(wacom->intf);
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mutex_lock(&wacom->lock);
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usb_kill_urb(wacom->irq);
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wacom->open = false;
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wacom->intf->needs_remote_wakeup = 0;
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mutex_unlock(&wacom->lock);
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if (!autopm_error)
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usb_autopm_put_interface(wacom->intf);
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}
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/*
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* Calculate the resolution of the X or Y axis, given appropriate HID data.
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* This function is little more than hidinput_calc_abs_res stripped down.
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*/
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static int wacom_calc_hid_res(int logical_extents, int physical_extents,
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unsigned char unit, unsigned char exponent)
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{
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int prev, unit_exponent;
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/* Check if the extents are sane */
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if (logical_extents <= 0 || physical_extents <= 0)
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return 0;
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/* Get signed value of nybble-sized twos-compliment exponent */
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unit_exponent = exponent;
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if (unit_exponent > 7)
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unit_exponent -= 16;
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/* Convert physical_extents to millimeters */
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if (unit == 0x11) { /* If centimeters */
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unit_exponent += 1;
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} else if (unit == 0x13) { /* If inches */
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prev = physical_extents;
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physical_extents *= 254;
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if (physical_extents < prev)
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return 0;
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unit_exponent -= 1;
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} else {
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return 0;
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}
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/* Apply negative unit exponent */
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for (; unit_exponent < 0; unit_exponent++) {
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prev = logical_extents;
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logical_extents *= 10;
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if (logical_extents < prev)
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return 0;
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}
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/* Apply positive unit exponent */
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for (; unit_exponent > 0; unit_exponent--) {
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prev = physical_extents;
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physical_extents *= 10;
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if (physical_extents < prev)
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return 0;
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}
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/* Calculate resolution */
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return logical_extents / physical_extents;
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}
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/*
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* The physical dimension specified by the HID descriptor is likely not in
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* the "100th of a mm" units expected by wacom_calculate_touch_res. This
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* function adjusts the value of [xy]_phy based on the unit and exponent
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* provided by the HID descriptor. If an error occurs durring conversion
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* (e.g. from the unit being left unspecified) [xy]_phy is not modified.
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*/
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static void wacom_fix_phy_from_hid(struct wacom_features *features)
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{
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int xres = wacom_calc_hid_res(features->x_max, features->x_phy,
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features->unit, features->unitExpo);
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int yres = wacom_calc_hid_res(features->y_max, features->y_phy,
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features->unit, features->unitExpo);
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if (xres > 0 && yres > 0) {
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features->x_phy = (100 * features->x_max) / xres;
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features->y_phy = (100 * features->y_max) / yres;
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}
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}
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/*
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* Static values for max X/Y and resolution of Pen interface is stored in
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* features. This mean physical size of active area can be computed.
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* This is useful to do when Pen and Touch have same active area of tablet.
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* This means for Touch device, we only need to find max X/Y value and we
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* have enough information to compute resolution of touch.
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*/
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static void wacom_set_phy_from_res(struct wacom_features *features)
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{
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features->x_phy = (features->x_max * 100) / features->x_resolution;
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features->y_phy = (features->y_max * 100) / features->y_resolution;
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}
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static int wacom_parse_logical_collection(unsigned char *report,
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struct wacom_features *features)
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{
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int length = 0;
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if (features->type == BAMBOO_PT) {
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/* Logical collection is only used by 3rd gen Bamboo Touch */
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features->pktlen = WACOM_PKGLEN_BBTOUCH3;
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features->device_type = BTN_TOOL_FINGER;
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wacom_set_phy_from_res(features);
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features->x_max = features->y_max =
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get_unaligned_le16(&report[10]);
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length = 11;
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}
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return length;
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}
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static void wacom_retrieve_report_data(struct usb_interface *intf,
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struct wacom_features *features)
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{
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int result = 0;
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unsigned char *rep_data;
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rep_data = kmalloc(2, GFP_KERNEL);
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if (rep_data) {
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rep_data[0] = 12;
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result = wacom_get_report(intf, WAC_HID_FEATURE_REPORT,
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rep_data[0], rep_data, 2,
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WAC_MSG_RETRIES);
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if (result >= 0 && rep_data[1] > 2)
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features->touch_max = rep_data[1];
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kfree(rep_data);
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}
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}
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/*
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* Interface Descriptor of wacom devices can be incomplete and
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* inconsistent so wacom_features table is used to store stylus
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* device's packet lengths, various maximum values, and tablet
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* resolution based on product ID's.
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*
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* For devices that contain 2 interfaces, wacom_features table is
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* inaccurate for the touch interface. Since the Interface Descriptor
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* for touch interfaces has pretty complete data, this function exists
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* to query tablet for this missing information instead of hard coding in
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* an additional table.
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*
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* A typical Interface Descriptor for a stylus will contain a
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* boot mouse application collection that is not of interest and this
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* function will ignore it.
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*
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* It also contains a digitizer application collection that also is not
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* of interest since any information it contains would be duplicate
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* of what is in wacom_features. Usually it defines a report of an array
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* of bytes that could be used as max length of the stylus packet returned.
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* If it happens to define a Digitizer-Stylus Physical Collection then
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* the X and Y logical values contain valid data but it is ignored.
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*
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* A typical Interface Descriptor for a touch interface will contain a
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* Digitizer-Finger Physical Collection which will define both logical
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* X/Y maximum as well as the physical size of tablet. Since touch
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* interfaces haven't supported pressure or distance, this is enough
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* information to override invalid values in the wacom_features table.
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*
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* 3rd gen Bamboo Touch no longer define a Digitizer-Finger Pysical
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* Collection. Instead they define a Logical Collection with a single
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* Logical Maximum for both X and Y.
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*
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* Intuos5 touch interface does not contain useful data. We deal with
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* this after returning from this function.
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*/
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static int wacom_parse_hid(struct usb_interface *intf,
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struct hid_descriptor *hid_desc,
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struct wacom_features *features)
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{
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struct usb_device *dev = interface_to_usbdev(intf);
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char limit = 0;
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/* result has to be defined as int for some devices */
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int result = 0;
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int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0;
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unsigned char *report;
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report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL);
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if (!report)
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return -ENOMEM;
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/* retrive report descriptors */
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do {
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result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
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USB_REQ_GET_DESCRIPTOR,
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USB_RECIP_INTERFACE | USB_DIR_IN,
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HID_DEVICET_REPORT << 8,
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intf->altsetting[0].desc.bInterfaceNumber, /* interface */
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report,
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hid_desc->wDescriptorLength,
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5000); /* 5 secs */
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} while (result < 0 && limit++ < WAC_MSG_RETRIES);
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/* No need to parse the Descriptor. It isn't an error though */
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if (result < 0)
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goto out;
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for (i = 0; i < hid_desc->wDescriptorLength; i++) {
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switch (report[i]) {
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case HID_USAGE_PAGE:
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switch (report[i + 1]) {
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case HID_USAGE_PAGE_DIGITIZER:
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usage = WCM_DIGITIZER;
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i++;
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break;
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case HID_USAGE_PAGE_DESKTOP:
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usage = WCM_DESKTOP;
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i++;
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break;
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}
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break;
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case HID_USAGE:
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switch (report[i + 1]) {
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case HID_USAGE_X:
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if (usage == WCM_DESKTOP) {
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if (finger) {
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features->device_type = BTN_TOOL_FINGER;
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switch (features->type) {
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case TABLETPC2FG:
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features->pktlen = WACOM_PKGLEN_TPC2FG;
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break;
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case MTSCREEN:
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case WACOM_24HDT:
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features->pktlen = WACOM_PKGLEN_MTOUCH;
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break;
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case MTTPC:
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features->pktlen = WACOM_PKGLEN_MTTPC;
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break;
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case BAMBOO_PT:
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features->pktlen = WACOM_PKGLEN_BBTOUCH;
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break;
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default:
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features->pktlen = WACOM_PKGLEN_GRAPHIRE;
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break;
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}
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switch (features->type) {
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case BAMBOO_PT:
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features->x_phy =
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get_unaligned_le16(&report[i + 5]);
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features->x_max =
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get_unaligned_le16(&report[i + 8]);
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i += 15;
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break;
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case WACOM_24HDT:
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features->x_max =
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get_unaligned_le16(&report[i + 3]);
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features->x_phy =
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get_unaligned_le16(&report[i + 8]);
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features->unit = report[i - 1];
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features->unitExpo = report[i - 3];
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i += 12;
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break;
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default:
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features->x_max =
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get_unaligned_le16(&report[i + 3]);
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features->x_phy =
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get_unaligned_le16(&report[i + 6]);
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features->unit = report[i + 9];
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features->unitExpo = report[i + 11];
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i += 12;
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break;
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}
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} else if (pen) {
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/* penabled only accepts exact bytes of data */
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if (features->type >= TABLETPC)
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features->pktlen = WACOM_PKGLEN_GRAPHIRE;
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features->device_type = BTN_TOOL_PEN;
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features->x_max =
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get_unaligned_le16(&report[i + 3]);
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i += 4;
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}
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}
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break;
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|
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case HID_USAGE_Y:
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if (usage == WCM_DESKTOP) {
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if (finger) {
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switch (features->type) {
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case TABLETPC2FG:
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case MTSCREEN:
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case MTTPC:
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features->y_max =
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get_unaligned_le16(&report[i + 3]);
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features->y_phy =
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get_unaligned_le16(&report[i + 6]);
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i += 7;
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break;
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case WACOM_24HDT:
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features->y_max =
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get_unaligned_le16(&report[i + 3]);
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features->y_phy =
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get_unaligned_le16(&report[i - 2]);
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i += 7;
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break;
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case BAMBOO_PT:
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features->y_phy =
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get_unaligned_le16(&report[i + 3]);
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features->y_max =
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get_unaligned_le16(&report[i + 6]);
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i += 12;
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break;
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default:
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features->y_max =
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features->x_max;
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features->y_phy =
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get_unaligned_le16(&report[i + 3]);
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i += 4;
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break;
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}
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} else if (pen) {
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features->y_max =
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get_unaligned_le16(&report[i + 3]);
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i += 4;
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}
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}
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break;
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|
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case HID_USAGE_FINGER:
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finger = 1;
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i++;
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break;
|
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|
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/*
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* Requiring Stylus Usage will ignore boot mouse
|
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* X/Y values and some cases of invalid Digitizer X/Y
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* values commonly reported.
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*/
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case HID_USAGE_STYLUS:
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pen = 1;
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i++;
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break;
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|
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case HID_USAGE_CONTACTMAX:
|
|
/* leave touch_max as is if predefined */
|
|
if (!features->touch_max)
|
|
wacom_retrieve_report_data(intf, features);
|
|
i++;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case HID_COLLECTION_END:
|
|
/* reset UsagePage and Finger */
|
|
finger = usage = 0;
|
|
break;
|
|
|
|
case HID_COLLECTION:
|
|
i++;
|
|
switch (report[i]) {
|
|
case HID_COLLECTION_LOGICAL:
|
|
i += wacom_parse_logical_collection(&report[i],
|
|
features);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
out:
|
|
result = 0;
|
|
kfree(report);
|
|
return result;
|
|
}
|
|
|
|
static int wacom_set_device_mode(struct usb_interface *intf, int report_id, int length, int mode)
|
|
{
|
|
unsigned char *rep_data;
|
|
int error = -ENOMEM, limit = 0;
|
|
|
|
rep_data = kzalloc(length, GFP_KERNEL);
|
|
if (!rep_data)
|
|
return error;
|
|
|
|
rep_data[0] = report_id;
|
|
rep_data[1] = mode;
|
|
|
|
do {
|
|
error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT,
|
|
report_id, rep_data, length, 1);
|
|
if (error >= 0)
|
|
error = wacom_get_report(intf, WAC_HID_FEATURE_REPORT,
|
|
report_id, rep_data, length, 1);
|
|
} while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES);
|
|
|
|
kfree(rep_data);
|
|
|
|
return error < 0 ? error : 0;
|
|
}
|
|
|
|
/*
|
|
* Switch the tablet into its most-capable mode. Wacom tablets are
|
|
* typically configured to power-up in a mode which sends mouse-like
|
|
* reports to the OS. To get absolute position, pressure data, etc.
|
|
* from the tablet, it is necessary to switch the tablet out of this
|
|
* mode and into one which sends the full range of tablet data.
|
|
*/
|
|
static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_features *features)
|
|
{
|
|
if (features->device_type == BTN_TOOL_FINGER) {
|
|
if (features->type > TABLETPC) {
|
|
/* MT Tablet PC touch */
|
|
return wacom_set_device_mode(intf, 3, 4, 4);
|
|
}
|
|
else if (features->type == WACOM_24HDT) {
|
|
return wacom_set_device_mode(intf, 18, 3, 2);
|
|
}
|
|
} else if (features->device_type == BTN_TOOL_PEN) {
|
|
if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
|
|
return wacom_set_device_mode(intf, 2, 2, 2);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
|
|
struct wacom_features *features)
|
|
{
|
|
int error = 0;
|
|
struct usb_host_interface *interface = intf->cur_altsetting;
|
|
struct hid_descriptor *hid_desc;
|
|
|
|
/* default features */
|
|
features->device_type = BTN_TOOL_PEN;
|
|
features->x_fuzz = 4;
|
|
features->y_fuzz = 4;
|
|
features->pressure_fuzz = 0;
|
|
features->distance_fuzz = 0;
|
|
|
|
/*
|
|
* The wireless device HID is basic and layout conflicts with
|
|
* other tablets (monitor and touch interface can look like pen).
|
|
* Skip the query for this type and modify defaults based on
|
|
* interface number.
|
|
*/
|
|
if (features->type == WIRELESS) {
|
|
if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
|
|
features->device_type = 0;
|
|
} else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
|
|
features->device_type = BTN_TOOL_FINGER;
|
|
features->pktlen = WACOM_PKGLEN_BBTOUCH3;
|
|
}
|
|
}
|
|
|
|
/* only devices that support touch need to retrieve the info */
|
|
if (features->type < BAMBOO_PT) {
|
|
goto out;
|
|
}
|
|
|
|
error = usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc);
|
|
if (error) {
|
|
error = usb_get_extra_descriptor(&interface->endpoint[0],
|
|
HID_DEVICET_REPORT, &hid_desc);
|
|
if (error) {
|
|
dev_err(&intf->dev,
|
|
"can not retrieve extra class descriptor\n");
|
|
goto out;
|
|
}
|
|
}
|
|
error = wacom_parse_hid(intf, hid_desc, features);
|
|
if (error)
|
|
goto out;
|
|
wacom_fix_phy_from_hid(features);
|
|
|
|
out:
|
|
return error;
|
|
}
|
|
|
|
struct wacom_usbdev_data {
|
|
struct list_head list;
|
|
struct kref kref;
|
|
struct usb_device *dev;
|
|
struct wacom_shared shared;
|
|
};
|
|
|
|
static LIST_HEAD(wacom_udev_list);
|
|
static DEFINE_MUTEX(wacom_udev_list_lock);
|
|
|
|
static struct usb_device *wacom_get_sibling(struct usb_device *dev, int vendor, int product)
|
|
{
|
|
int port1;
|
|
struct usb_device *sibling;
|
|
|
|
if (vendor == 0 && product == 0)
|
|
return dev;
|
|
|
|
if (dev->parent == NULL)
|
|
return NULL;
|
|
|
|
usb_hub_for_each_child(dev->parent, port1, sibling) {
|
|
struct usb_device_descriptor *d;
|
|
if (sibling == NULL)
|
|
continue;
|
|
|
|
d = &sibling->descriptor;
|
|
if (d->idVendor == vendor && d->idProduct == product)
|
|
return sibling;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct wacom_usbdev_data *wacom_get_usbdev_data(struct usb_device *dev)
|
|
{
|
|
struct wacom_usbdev_data *data;
|
|
|
|
list_for_each_entry(data, &wacom_udev_list, list) {
|
|
if (data->dev == dev) {
|
|
kref_get(&data->kref);
|
|
return data;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int wacom_add_shared_data(struct wacom_wac *wacom,
|
|
struct usb_device *dev)
|
|
{
|
|
struct wacom_usbdev_data *data;
|
|
int retval = 0;
|
|
|
|
mutex_lock(&wacom_udev_list_lock);
|
|
|
|
data = wacom_get_usbdev_data(dev);
|
|
if (!data) {
|
|
data = kzalloc(sizeof(struct wacom_usbdev_data), GFP_KERNEL);
|
|
if (!data) {
|
|
retval = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
kref_init(&data->kref);
|
|
data->dev = dev;
|
|
list_add_tail(&data->list, &wacom_udev_list);
|
|
}
|
|
|
|
wacom->shared = &data->shared;
|
|
|
|
out:
|
|
mutex_unlock(&wacom_udev_list_lock);
|
|
return retval;
|
|
}
|
|
|
|
static void wacom_release_shared_data(struct kref *kref)
|
|
{
|
|
struct wacom_usbdev_data *data =
|
|
container_of(kref, struct wacom_usbdev_data, kref);
|
|
|
|
mutex_lock(&wacom_udev_list_lock);
|
|
list_del(&data->list);
|
|
mutex_unlock(&wacom_udev_list_lock);
|
|
|
|
kfree(data);
|
|
}
|
|
|
|
static void wacom_remove_shared_data(struct wacom_wac *wacom)
|
|
{
|
|
struct wacom_usbdev_data *data;
|
|
|
|
if (wacom->shared) {
|
|
data = container_of(wacom->shared, struct wacom_usbdev_data, shared);
|
|
kref_put(&data->kref, wacom_release_shared_data);
|
|
wacom->shared = NULL;
|
|
}
|
|
}
|
|
|
|
static int wacom_led_control(struct wacom *wacom)
|
|
{
|
|
unsigned char *buf;
|
|
int retval;
|
|
|
|
buf = kzalloc(9, GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
if (wacom->wacom_wac.features.type >= INTUOS5S &&
|
|
wacom->wacom_wac.features.type <= INTUOS5L) {
|
|
/*
|
|
* Touch Ring and crop mark LED luminance may take on
|
|
* one of four values:
|
|
* 0 = Low; 1 = Medium; 2 = High; 3 = Off
|
|
*/
|
|
int ring_led = wacom->led.select[0] & 0x03;
|
|
int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
|
|
int crop_lum = 0;
|
|
|
|
buf[0] = WAC_CMD_LED_CONTROL;
|
|
buf[1] = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
|
|
}
|
|
else {
|
|
int led = wacom->led.select[0] | 0x4;
|
|
|
|
if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
|
|
wacom->wacom_wac.features.type == WACOM_24HD)
|
|
led |= (wacom->led.select[1] << 4) | 0x40;
|
|
|
|
buf[0] = WAC_CMD_LED_CONTROL;
|
|
buf[1] = led;
|
|
buf[2] = wacom->led.llv;
|
|
buf[3] = wacom->led.hlv;
|
|
buf[4] = wacom->led.img_lum;
|
|
}
|
|
|
|
retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_LED_CONTROL,
|
|
buf, 9, WAC_CMD_RETRIES);
|
|
kfree(buf);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static int wacom_led_putimage(struct wacom *wacom, int button_id, const void *img)
|
|
{
|
|
unsigned char *buf;
|
|
int i, retval;
|
|
|
|
buf = kzalloc(259, GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
/* Send 'start' command */
|
|
buf[0] = WAC_CMD_ICON_START;
|
|
buf[1] = 1;
|
|
retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START,
|
|
buf, 2, WAC_CMD_RETRIES);
|
|
if (retval < 0)
|
|
goto out;
|
|
|
|
buf[0] = WAC_CMD_ICON_XFER;
|
|
buf[1] = button_id & 0x07;
|
|
for (i = 0; i < 4; i++) {
|
|
buf[2] = i;
|
|
memcpy(buf + 3, img + i * 256, 256);
|
|
|
|
retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_XFER,
|
|
buf, 259, WAC_CMD_RETRIES);
|
|
if (retval < 0)
|
|
break;
|
|
}
|
|
|
|
/* Send 'stop' */
|
|
buf[0] = WAC_CMD_ICON_START;
|
|
buf[1] = 0;
|
|
wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START,
|
|
buf, 2, WAC_CMD_RETRIES);
|
|
|
|
out:
|
|
kfree(buf);
|
|
return retval;
|
|
}
|
|
|
|
static ssize_t wacom_led_select_store(struct device *dev, int set_id,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct wacom *wacom = dev_get_drvdata(dev);
|
|
unsigned int id;
|
|
int err;
|
|
|
|
err = kstrtouint(buf, 10, &id);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&wacom->lock);
|
|
|
|
wacom->led.select[set_id] = id & 0x3;
|
|
err = wacom_led_control(wacom);
|
|
|
|
mutex_unlock(&wacom->lock);
|
|
|
|
return err < 0 ? err : count;
|
|
}
|
|
|
|
#define DEVICE_LED_SELECT_ATTR(SET_ID) \
|
|
static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
|
|
struct device_attribute *attr, const char *buf, size_t count) \
|
|
{ \
|
|
return wacom_led_select_store(dev, SET_ID, buf, count); \
|
|
} \
|
|
static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
|
|
struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
struct wacom *wacom = dev_get_drvdata(dev); \
|
|
return snprintf(buf, 2, "%d\n", wacom->led.select[SET_ID]); \
|
|
} \
|
|
static DEVICE_ATTR(status_led##SET_ID##_select, S_IWUSR | S_IRUSR, \
|
|
wacom_led##SET_ID##_select_show, \
|
|
wacom_led##SET_ID##_select_store)
|
|
|
|
DEVICE_LED_SELECT_ATTR(0);
|
|
DEVICE_LED_SELECT_ATTR(1);
|
|
|
|
static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
|
|
const char *buf, size_t count)
|
|
{
|
|
unsigned int value;
|
|
int err;
|
|
|
|
err = kstrtouint(buf, 10, &value);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&wacom->lock);
|
|
|
|
*dest = value & 0x7f;
|
|
err = wacom_led_control(wacom);
|
|
|
|
mutex_unlock(&wacom->lock);
|
|
|
|
return err < 0 ? err : count;
|
|
}
|
|
|
|
#define DEVICE_LUMINANCE_ATTR(name, field) \
|
|
static ssize_t wacom_##name##_luminance_store(struct device *dev, \
|
|
struct device_attribute *attr, const char *buf, size_t count) \
|
|
{ \
|
|
struct wacom *wacom = dev_get_drvdata(dev); \
|
|
\
|
|
return wacom_luminance_store(wacom, &wacom->led.field, \
|
|
buf, count); \
|
|
} \
|
|
static DEVICE_ATTR(name##_luminance, S_IWUSR, \
|
|
NULL, wacom_##name##_luminance_store)
|
|
|
|
DEVICE_LUMINANCE_ATTR(status0, llv);
|
|
DEVICE_LUMINANCE_ATTR(status1, hlv);
|
|
DEVICE_LUMINANCE_ATTR(buttons, img_lum);
|
|
|
|
static ssize_t wacom_button_image_store(struct device *dev, int button_id,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct wacom *wacom = dev_get_drvdata(dev);
|
|
int err;
|
|
|
|
if (count != 1024)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&wacom->lock);
|
|
|
|
err = wacom_led_putimage(wacom, button_id, buf);
|
|
|
|
mutex_unlock(&wacom->lock);
|
|
|
|
return err < 0 ? err : count;
|
|
}
|
|
|
|
#define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
|
|
static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
|
|
struct device_attribute *attr, const char *buf, size_t count) \
|
|
{ \
|
|
return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
|
|
} \
|
|
static DEVICE_ATTR(button##BUTTON_ID##_rawimg, S_IWUSR, \
|
|
NULL, wacom_btnimg##BUTTON_ID##_store)
|
|
|
|
DEVICE_BTNIMG_ATTR(0);
|
|
DEVICE_BTNIMG_ATTR(1);
|
|
DEVICE_BTNIMG_ATTR(2);
|
|
DEVICE_BTNIMG_ATTR(3);
|
|
DEVICE_BTNIMG_ATTR(4);
|
|
DEVICE_BTNIMG_ATTR(5);
|
|
DEVICE_BTNIMG_ATTR(6);
|
|
DEVICE_BTNIMG_ATTR(7);
|
|
|
|
static struct attribute *cintiq_led_attrs[] = {
|
|
&dev_attr_status_led0_select.attr,
|
|
&dev_attr_status_led1_select.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group cintiq_led_attr_group = {
|
|
.name = "wacom_led",
|
|
.attrs = cintiq_led_attrs,
|
|
};
|
|
|
|
static struct attribute *intuos4_led_attrs[] = {
|
|
&dev_attr_status0_luminance.attr,
|
|
&dev_attr_status1_luminance.attr,
|
|
&dev_attr_status_led0_select.attr,
|
|
&dev_attr_buttons_luminance.attr,
|
|
&dev_attr_button0_rawimg.attr,
|
|
&dev_attr_button1_rawimg.attr,
|
|
&dev_attr_button2_rawimg.attr,
|
|
&dev_attr_button3_rawimg.attr,
|
|
&dev_attr_button4_rawimg.attr,
|
|
&dev_attr_button5_rawimg.attr,
|
|
&dev_attr_button6_rawimg.attr,
|
|
&dev_attr_button7_rawimg.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group intuos4_led_attr_group = {
|
|
.name = "wacom_led",
|
|
.attrs = intuos4_led_attrs,
|
|
};
|
|
|
|
static struct attribute *intuos5_led_attrs[] = {
|
|
&dev_attr_status0_luminance.attr,
|
|
&dev_attr_status_led0_select.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group intuos5_led_attr_group = {
|
|
.name = "wacom_led",
|
|
.attrs = intuos5_led_attrs,
|
|
};
|
|
|
|
static int wacom_initialize_leds(struct wacom *wacom)
|
|
{
|
|
int error;
|
|
|
|
/* Initialize default values */
|
|
switch (wacom->wacom_wac.features.type) {
|
|
case INTUOS4S:
|
|
case INTUOS4:
|
|
case INTUOS4L:
|
|
wacom->led.select[0] = 0;
|
|
wacom->led.select[1] = 0;
|
|
wacom->led.llv = 10;
|
|
wacom->led.hlv = 20;
|
|
wacom->led.img_lum = 10;
|
|
error = sysfs_create_group(&wacom->intf->dev.kobj,
|
|
&intuos4_led_attr_group);
|
|
break;
|
|
|
|
case WACOM_24HD:
|
|
case WACOM_21UX2:
|
|
wacom->led.select[0] = 0;
|
|
wacom->led.select[1] = 0;
|
|
wacom->led.llv = 0;
|
|
wacom->led.hlv = 0;
|
|
wacom->led.img_lum = 0;
|
|
|
|
error = sysfs_create_group(&wacom->intf->dev.kobj,
|
|
&cintiq_led_attr_group);
|
|
break;
|
|
|
|
case INTUOS5S:
|
|
case INTUOS5:
|
|
case INTUOS5L:
|
|
wacom->led.select[0] = 0;
|
|
wacom->led.select[1] = 0;
|
|
wacom->led.llv = 32;
|
|
wacom->led.hlv = 0;
|
|
wacom->led.img_lum = 0;
|
|
|
|
error = sysfs_create_group(&wacom->intf->dev.kobj,
|
|
&intuos5_led_attr_group);
|
|
break;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
if (error) {
|
|
dev_err(&wacom->intf->dev,
|
|
"cannot create sysfs group err: %d\n", error);
|
|
return error;
|
|
}
|
|
wacom_led_control(wacom);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void wacom_destroy_leds(struct wacom *wacom)
|
|
{
|
|
switch (wacom->wacom_wac.features.type) {
|
|
case INTUOS4S:
|
|
case INTUOS4:
|
|
case INTUOS4L:
|
|
sysfs_remove_group(&wacom->intf->dev.kobj,
|
|
&intuos4_led_attr_group);
|
|
break;
|
|
|
|
case WACOM_24HD:
|
|
case WACOM_21UX2:
|
|
sysfs_remove_group(&wacom->intf->dev.kobj,
|
|
&cintiq_led_attr_group);
|
|
break;
|
|
|
|
case INTUOS5S:
|
|
case INTUOS5:
|
|
case INTUOS5L:
|
|
sysfs_remove_group(&wacom->intf->dev.kobj,
|
|
&intuos5_led_attr_group);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static enum power_supply_property wacom_battery_props[] = {
|
|
POWER_SUPPLY_PROP_CAPACITY
|
|
};
|
|
|
|
static int wacom_battery_get_property(struct power_supply *psy,
|
|
enum power_supply_property psp,
|
|
union power_supply_propval *val)
|
|
{
|
|
struct wacom *wacom = container_of(psy, struct wacom, battery);
|
|
int ret = 0;
|
|
|
|
switch (psp) {
|
|
case POWER_SUPPLY_PROP_CAPACITY:
|
|
val->intval =
|
|
wacom->wacom_wac.battery_capacity * 100 / 31;
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int wacom_initialize_battery(struct wacom *wacom)
|
|
{
|
|
int error = 0;
|
|
|
|
if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR) {
|
|
wacom->battery.properties = wacom_battery_props;
|
|
wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
|
|
wacom->battery.get_property = wacom_battery_get_property;
|
|
wacom->battery.name = "wacom_battery";
|
|
wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY;
|
|
wacom->battery.use_for_apm = 0;
|
|
|
|
error = power_supply_register(&wacom->usbdev->dev,
|
|
&wacom->battery);
|
|
|
|
if (!error)
|
|
power_supply_powers(&wacom->battery,
|
|
&wacom->usbdev->dev);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
static void wacom_destroy_battery(struct wacom *wacom)
|
|
{
|
|
if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR &&
|
|
wacom->battery.dev) {
|
|
power_supply_unregister(&wacom->battery);
|
|
wacom->battery.dev = NULL;
|
|
}
|
|
}
|
|
|
|
static int wacom_register_input(struct wacom *wacom)
|
|
{
|
|
struct input_dev *input_dev;
|
|
struct usb_interface *intf = wacom->intf;
|
|
struct usb_device *dev = interface_to_usbdev(intf);
|
|
struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
|
|
int error;
|
|
|
|
input_dev = input_allocate_device();
|
|
if (!input_dev) {
|
|
error = -ENOMEM;
|
|
goto fail1;
|
|
}
|
|
|
|
input_dev->name = wacom_wac->name;
|
|
input_dev->dev.parent = &intf->dev;
|
|
input_dev->open = wacom_open;
|
|
input_dev->close = wacom_close;
|
|
usb_to_input_id(dev, &input_dev->id);
|
|
input_set_drvdata(input_dev, wacom);
|
|
|
|
wacom_wac->input = input_dev;
|
|
error = wacom_setup_input_capabilities(input_dev, wacom_wac);
|
|
if (error)
|
|
goto fail1;
|
|
|
|
error = input_register_device(input_dev);
|
|
if (error)
|
|
goto fail2;
|
|
|
|
return 0;
|
|
|
|
fail2:
|
|
input_free_device(input_dev);
|
|
wacom_wac->input = NULL;
|
|
fail1:
|
|
return error;
|
|
}
|
|
|
|
static void wacom_wireless_work(struct work_struct *work)
|
|
{
|
|
struct wacom *wacom = container_of(work, struct wacom, work);
|
|
struct usb_device *usbdev = wacom->usbdev;
|
|
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
|
|
struct wacom *wacom1, *wacom2;
|
|
struct wacom_wac *wacom_wac1, *wacom_wac2;
|
|
int error;
|
|
|
|
/*
|
|
* Regardless if this is a disconnect or a new tablet,
|
|
* remove any existing input and battery devices.
|
|
*/
|
|
|
|
wacom_destroy_battery(wacom);
|
|
|
|
/* Stylus interface */
|
|
wacom1 = usb_get_intfdata(usbdev->config->interface[1]);
|
|
wacom_wac1 = &(wacom1->wacom_wac);
|
|
if (wacom_wac1->input)
|
|
input_unregister_device(wacom_wac1->input);
|
|
wacom_wac1->input = NULL;
|
|
|
|
/* Touch interface */
|
|
wacom2 = usb_get_intfdata(usbdev->config->interface[2]);
|
|
wacom_wac2 = &(wacom2->wacom_wac);
|
|
if (wacom_wac2->input)
|
|
input_unregister_device(wacom_wac2->input);
|
|
wacom_wac2->input = NULL;
|
|
|
|
if (wacom_wac->pid == 0) {
|
|
dev_info(&wacom->intf->dev, "wireless tablet disconnected\n");
|
|
} else {
|
|
const struct usb_device_id *id = wacom_ids;
|
|
|
|
dev_info(&wacom->intf->dev,
|
|
"wireless tablet connected with PID %x\n",
|
|
wacom_wac->pid);
|
|
|
|
while (id->match_flags) {
|
|
if (id->idVendor == USB_VENDOR_ID_WACOM &&
|
|
id->idProduct == wacom_wac->pid)
|
|
break;
|
|
id++;
|
|
}
|
|
|
|
if (!id->match_flags) {
|
|
dev_info(&wacom->intf->dev,
|
|
"ignoring unknown PID.\n");
|
|
return;
|
|
}
|
|
|
|
/* Stylus interface */
|
|
wacom_wac1->features =
|
|
*((struct wacom_features *)id->driver_info);
|
|
wacom_wac1->features.device_type = BTN_TOOL_PEN;
|
|
error = wacom_register_input(wacom1);
|
|
if (error)
|
|
goto fail1;
|
|
|
|
/* Touch interface */
|
|
wacom_wac2->features =
|
|
*((struct wacom_features *)id->driver_info);
|
|
wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
|
|
wacom_wac2->features.device_type = BTN_TOOL_FINGER;
|
|
wacom_set_phy_from_res(&wacom_wac2->features);
|
|
wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096;
|
|
error = wacom_register_input(wacom2);
|
|
if (error)
|
|
goto fail2;
|
|
|
|
error = wacom_initialize_battery(wacom);
|
|
if (error)
|
|
goto fail3;
|
|
}
|
|
|
|
return;
|
|
|
|
fail3:
|
|
input_unregister_device(wacom_wac2->input);
|
|
wacom_wac2->input = NULL;
|
|
fail2:
|
|
input_unregister_device(wacom_wac1->input);
|
|
wacom_wac1->input = NULL;
|
|
fail1:
|
|
return;
|
|
}
|
|
|
|
static int wacom_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 wacom *wacom;
|
|
struct wacom_wac *wacom_wac;
|
|
struct wacom_features *features;
|
|
int error;
|
|
|
|
if (!id->driver_info)
|
|
return -EINVAL;
|
|
|
|
wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
|
|
if (!wacom)
|
|
return -ENOMEM;
|
|
|
|
wacom_wac = &wacom->wacom_wac;
|
|
wacom_wac->features = *((struct wacom_features *)id->driver_info);
|
|
features = &wacom_wac->features;
|
|
if (features->pktlen > WACOM_PKGLEN_MAX) {
|
|
error = -EINVAL;
|
|
goto fail1;
|
|
}
|
|
|
|
wacom_wac->data = usb_alloc_coherent(dev, WACOM_PKGLEN_MAX,
|
|
GFP_KERNEL, &wacom->data_dma);
|
|
if (!wacom_wac->data) {
|
|
error = -ENOMEM;
|
|
goto fail1;
|
|
}
|
|
|
|
wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!wacom->irq) {
|
|
error = -ENOMEM;
|
|
goto fail2;
|
|
}
|
|
|
|
wacom->usbdev = dev;
|
|
wacom->intf = intf;
|
|
mutex_init(&wacom->lock);
|
|
INIT_WORK(&wacom->work, wacom_wireless_work);
|
|
usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
|
|
strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
|
|
|
|
endpoint = &intf->cur_altsetting->endpoint[0].desc;
|
|
|
|
/* Retrieve the physical and logical size for touch devices */
|
|
error = wacom_retrieve_hid_descriptor(intf, features);
|
|
if (error)
|
|
goto fail3;
|
|
|
|
/*
|
|
* Intuos5 has no useful data about its touch interface in its
|
|
* HID descriptor. If this is the touch interface (wMaxPacketSize
|
|
* of WACOM_PKGLEN_BBTOUCH3), override the table values.
|
|
*/
|
|
if (features->type >= INTUOS5S && features->type <= INTUOS5L) {
|
|
if (endpoint->wMaxPacketSize == WACOM_PKGLEN_BBTOUCH3) {
|
|
features->device_type = BTN_TOOL_FINGER;
|
|
features->pktlen = WACOM_PKGLEN_BBTOUCH3;
|
|
|
|
wacom_set_phy_from_res(features);
|
|
|
|
features->x_max = 4096;
|
|
features->y_max = 4096;
|
|
} else {
|
|
features->device_type = BTN_TOOL_PEN;
|
|
}
|
|
}
|
|
|
|
wacom_setup_device_quirks(features);
|
|
|
|
strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
|
|
|
|
if (features->quirks & WACOM_QUIRK_MULTI_INPUT) {
|
|
struct usb_device *other_dev;
|
|
|
|
/* Append the device type to the name */
|
|
strlcat(wacom_wac->name,
|
|
features->device_type == BTN_TOOL_PEN ?
|
|
" Pen" : " Finger",
|
|
sizeof(wacom_wac->name));
|
|
|
|
|
|
other_dev = wacom_get_sibling(dev, features->oVid, features->oPid);
|
|
if (other_dev == NULL || wacom_get_usbdev_data(other_dev) == NULL)
|
|
other_dev = dev;
|
|
error = wacom_add_shared_data(wacom_wac, other_dev);
|
|
if (error)
|
|
goto fail3;
|
|
}
|
|
|
|
usb_fill_int_urb(wacom->irq, dev,
|
|
usb_rcvintpipe(dev, endpoint->bEndpointAddress),
|
|
wacom_wac->data, features->pktlen,
|
|
wacom_sys_irq, wacom, endpoint->bInterval);
|
|
wacom->irq->transfer_dma = wacom->data_dma;
|
|
wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
|
|
|
|
error = wacom_initialize_leds(wacom);
|
|
if (error)
|
|
goto fail4;
|
|
|
|
if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
|
|
error = wacom_register_input(wacom);
|
|
if (error)
|
|
goto fail5;
|
|
}
|
|
|
|
/* Note that if query fails it is not a hard failure */
|
|
wacom_query_tablet_data(intf, features);
|
|
|
|
usb_set_intfdata(intf, wacom);
|
|
|
|
if (features->quirks & WACOM_QUIRK_MONITOR) {
|
|
if (usb_submit_urb(wacom->irq, GFP_KERNEL))
|
|
goto fail5;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail5: wacom_destroy_leds(wacom);
|
|
fail4: wacom_remove_shared_data(wacom_wac);
|
|
fail3: usb_free_urb(wacom->irq);
|
|
fail2: usb_free_coherent(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma);
|
|
fail1: kfree(wacom);
|
|
return error;
|
|
}
|
|
|
|
static void wacom_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct wacom *wacom = usb_get_intfdata(intf);
|
|
|
|
usb_set_intfdata(intf, NULL);
|
|
|
|
usb_kill_urb(wacom->irq);
|
|
cancel_work_sync(&wacom->work);
|
|
if (wacom->wacom_wac.input)
|
|
input_unregister_device(wacom->wacom_wac.input);
|
|
wacom_destroy_battery(wacom);
|
|
wacom_destroy_leds(wacom);
|
|
usb_free_urb(wacom->irq);
|
|
usb_free_coherent(interface_to_usbdev(intf), WACOM_PKGLEN_MAX,
|
|
wacom->wacom_wac.data, wacom->data_dma);
|
|
wacom_remove_shared_data(&wacom->wacom_wac);
|
|
kfree(wacom);
|
|
}
|
|
|
|
static int wacom_suspend(struct usb_interface *intf, pm_message_t message)
|
|
{
|
|
struct wacom *wacom = usb_get_intfdata(intf);
|
|
|
|
mutex_lock(&wacom->lock);
|
|
usb_kill_urb(wacom->irq);
|
|
mutex_unlock(&wacom->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wacom_resume(struct usb_interface *intf)
|
|
{
|
|
struct wacom *wacom = usb_get_intfdata(intf);
|
|
struct wacom_features *features = &wacom->wacom_wac.features;
|
|
int rv = 0;
|
|
|
|
mutex_lock(&wacom->lock);
|
|
|
|
/* switch to wacom mode first */
|
|
wacom_query_tablet_data(intf, features);
|
|
wacom_led_control(wacom);
|
|
|
|
if ((wacom->open || features->quirks & WACOM_QUIRK_MONITOR)
|
|
&& usb_submit_urb(wacom->irq, GFP_NOIO) < 0)
|
|
rv = -EIO;
|
|
|
|
mutex_unlock(&wacom->lock);
|
|
|
|
return rv;
|
|
}
|
|
|
|
static int wacom_reset_resume(struct usb_interface *intf)
|
|
{
|
|
return wacom_resume(intf);
|
|
}
|
|
|
|
static struct usb_driver wacom_driver = {
|
|
.name = "wacom",
|
|
.id_table = wacom_ids,
|
|
.probe = wacom_probe,
|
|
.disconnect = wacom_disconnect,
|
|
.suspend = wacom_suspend,
|
|
.resume = wacom_resume,
|
|
.reset_resume = wacom_reset_resume,
|
|
.supports_autosuspend = 1,
|
|
};
|
|
|
|
module_usb_driver(wacom_driver);
|