diff options
Diffstat (limited to 'drivers/hid/hid-huion.c')
| -rw-r--r-- | drivers/hid/hid-huion.c | 290 |
1 files changed, 0 insertions, 290 deletions
diff --git a/drivers/hid/hid-huion.c b/drivers/hid/hid-huion.c deleted file mode 100644 index 61b68ca27790..000000000000 --- a/drivers/hid/hid-huion.c +++ /dev/null @@ -1,290 +0,0 @@ -/* - * HID driver for Huion devices not fully compliant with HID standard - * - * Copyright (c) 2013 Martin Rusko - * Copyright (c) 2014 Nikolai Kondrashov - */ - -/* - * 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. - */ - -#include <linux/device.h> -#include <linux/hid.h> -#include <linux/module.h> -#include <linux/usb.h> -#include <asm/unaligned.h> -#include "usbhid/usbhid.h" - -#include "hid-ids.h" - -/* Report descriptor template placeholder head */ -#define HUION_PH_HEAD 0xFE, 0xED, 0x1D - -/* Report descriptor template placeholder IDs */ -enum huion_ph_id { - HUION_PH_ID_X_LM, - HUION_PH_ID_X_PM, - HUION_PH_ID_Y_LM, - HUION_PH_ID_Y_PM, - HUION_PH_ID_PRESSURE_LM, - HUION_PH_ID_NUM -}; - -/* Report descriptor template placeholder */ -#define HUION_PH(_ID) HUION_PH_HEAD, HUION_PH_ID_##_ID - -/* Fixed report descriptor template */ -static const __u8 huion_tablet_rdesc_template[] = { - 0x05, 0x0D, /* Usage Page (Digitizer), */ - 0x09, 0x02, /* Usage (Pen), */ - 0xA1, 0x01, /* Collection (Application), */ - 0x85, 0x07, /* Report ID (7), */ - 0x09, 0x20, /* Usage (Stylus), */ - 0xA0, /* Collection (Physical), */ - 0x14, /* Logical Minimum (0), */ - 0x25, 0x01, /* Logical Maximum (1), */ - 0x75, 0x01, /* Report Size (1), */ - 0x09, 0x42, /* Usage (Tip Switch), */ - 0x09, 0x44, /* Usage (Barrel Switch), */ - 0x09, 0x46, /* Usage (Tablet Pick), */ - 0x95, 0x03, /* Report Count (3), */ - 0x81, 0x02, /* Input (Variable), */ - 0x95, 0x03, /* Report Count (3), */ - 0x81, 0x03, /* Input (Constant, Variable), */ - 0x09, 0x32, /* Usage (In Range), */ - 0x95, 0x01, /* Report Count (1), */ - 0x81, 0x02, /* Input (Variable), */ - 0x95, 0x01, /* Report Count (1), */ - 0x81, 0x03, /* Input (Constant, Variable), */ - 0x75, 0x10, /* Report Size (16), */ - 0x95, 0x01, /* Report Count (1), */ - 0xA4, /* Push, */ - 0x05, 0x01, /* Usage Page (Desktop), */ - 0x65, 0x13, /* Unit (Inch), */ - 0x55, 0xFD, /* Unit Exponent (-3), */ - 0x34, /* Physical Minimum (0), */ - 0x09, 0x30, /* Usage (X), */ - 0x27, HUION_PH(X_LM), /* Logical Maximum (PLACEHOLDER), */ - 0x47, HUION_PH(X_PM), /* Physical Maximum (PLACEHOLDER), */ - 0x81, 0x02, /* Input (Variable), */ - 0x09, 0x31, /* Usage (Y), */ - 0x27, HUION_PH(Y_LM), /* Logical Maximum (PLACEHOLDER), */ - 0x47, HUION_PH(Y_PM), /* Physical Maximum (PLACEHOLDER), */ - 0x81, 0x02, /* Input (Variable), */ - 0xB4, /* Pop, */ - 0x09, 0x30, /* Usage (Tip Pressure), */ - 0x27, - HUION_PH(PRESSURE_LM), /* Logical Maximum (PLACEHOLDER), */ - 0x81, 0x02, /* Input (Variable), */ - 0xC0, /* End Collection, */ - 0xC0 /* End Collection */ -}; - -/* Parameter indices */ -enum huion_prm { - HUION_PRM_X_LM = 1, - HUION_PRM_Y_LM = 2, - HUION_PRM_PRESSURE_LM = 4, - HUION_PRM_RESOLUTION = 5, - HUION_PRM_NUM -}; - -/* Driver data */ -struct huion_drvdata { - __u8 *rdesc; - unsigned int rsize; -}; - -static __u8 *huion_report_fixup(struct hid_device *hdev, __u8 *rdesc, - unsigned int *rsize) -{ - struct huion_drvdata *drvdata = hid_get_drvdata(hdev); - switch (hdev->product) { - case USB_DEVICE_ID_HUION_TABLET: - if (drvdata->rdesc != NULL) { - rdesc = drvdata->rdesc; - *rsize = drvdata->rsize; - } - break; - } - return rdesc; -} - -/** - * Enable fully-functional tablet mode and determine device parameters. - * - * @hdev: HID device - */ -static int huion_tablet_enable(struct hid_device *hdev) -{ - int rc; - struct usb_device *usb_dev = hid_to_usb_dev(hdev); - struct huion_drvdata *drvdata = hid_get_drvdata(hdev); - __le16 *buf = NULL; - size_t len; - s32 params[HUION_PH_ID_NUM]; - s32 resolution; - __u8 *p; - s32 v; - - /* - * Read string descriptor containing tablet parameters. The specific - * string descriptor and data were discovered by sniffing the Windows - * driver traffic. - * NOTE: This enables fully-functional tablet mode. - */ - len = HUION_PRM_NUM * sizeof(*buf); - buf = kmalloc(len, GFP_KERNEL); - if (buf == NULL) { - hid_err(hdev, "failed to allocate parameter buffer\n"); - rc = -ENOMEM; - goto cleanup; - } - rc = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), - USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, - (USB_DT_STRING << 8) + 0x64, - 0x0409, buf, len, - USB_CTRL_GET_TIMEOUT); - if (rc == -EPIPE) { - hid_err(hdev, "device parameters not found\n"); - rc = -ENODEV; - goto cleanup; - } else if (rc < 0) { - hid_err(hdev, "failed to get device parameters: %d\n", rc); - rc = -ENODEV; - goto cleanup; - } else if (rc != len) { - hid_err(hdev, "invalid device parameters\n"); - rc = -ENODEV; - goto cleanup; - } - - /* Extract device parameters */ - params[HUION_PH_ID_X_LM] = le16_to_cpu(buf[HUION_PRM_X_LM]); - params[HUION_PH_ID_Y_LM] = le16_to_cpu(buf[HUION_PRM_Y_LM]); - params[HUION_PH_ID_PRESSURE_LM] = - le16_to_cpu(buf[HUION_PRM_PRESSURE_LM]); - resolution = le16_to_cpu(buf[HUION_PRM_RESOLUTION]); - if (resolution == 0) { - params[HUION_PH_ID_X_PM] = 0; - params[HUION_PH_ID_Y_PM] = 0; - } else { - params[HUION_PH_ID_X_PM] = params[HUION_PH_ID_X_LM] * - 1000 / resolution; - params[HUION_PH_ID_Y_PM] = params[HUION_PH_ID_Y_LM] * - 1000 / resolution; - } - - /* Allocate fixed report descriptor */ - drvdata->rdesc = devm_kmalloc(&hdev->dev, - sizeof(huion_tablet_rdesc_template), - GFP_KERNEL); - if (drvdata->rdesc == NULL) { - hid_err(hdev, "failed to allocate fixed rdesc\n"); - rc = -ENOMEM; - goto cleanup; - } - drvdata->rsize = sizeof(huion_tablet_rdesc_template); - - /* Format fixed report descriptor */ - memcpy(drvdata->rdesc, huion_tablet_rdesc_template, - drvdata->rsize); - for (p = drvdata->rdesc; - p <= drvdata->rdesc + drvdata->rsize - 4;) { - if (p[0] == 0xFE && p[1] == 0xED && p[2] == 0x1D && - p[3] < sizeof(params)) { - v = params[p[3]]; - put_unaligned(cpu_to_le32(v), (s32 *)p); - p += 4; - } else { - p++; - } - } - - rc = 0; - -cleanup: - kfree(buf); - return rc; -} - -static int huion_probe(struct hid_device *hdev, const struct hid_device_id *id) -{ - int rc; - struct usb_interface *intf = to_usb_interface(hdev->dev.parent); - struct huion_drvdata *drvdata; - - /* Allocate and assign driver data */ - drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL); - if (drvdata == NULL) { - hid_err(hdev, "failed to allocate driver data\n"); - return -ENOMEM; - } - hid_set_drvdata(hdev, drvdata); - - switch (id->product) { - case USB_DEVICE_ID_HUION_TABLET: - /* If this is the pen interface */ - if (intf->cur_altsetting->desc.bInterfaceNumber == 0) { - rc = huion_tablet_enable(hdev); - if (rc) { - hid_err(hdev, "tablet enabling failed\n"); - return rc; - } - } - break; - } - - rc = hid_parse(hdev); - if (rc) { - hid_err(hdev, "parse failed\n"); - return rc; - } - - rc = hid_hw_start(hdev, HID_CONNECT_DEFAULT); - if (rc) { - hid_err(hdev, "hw start failed\n"); - return rc; - } - - return 0; -} - -static int huion_raw_event(struct hid_device *hdev, struct hid_report *report, - u8 *data, int size) -{ - struct usb_interface *intf = to_usb_interface(hdev->dev.parent); - - /* If this is a pen input report */ - if (intf->cur_altsetting->desc.bInterfaceNumber == 0 && - report->type == HID_INPUT_REPORT && - report->id == 0x07 && size >= 2) - /* Invert the in-range bit */ - data[1] ^= 0x40; - - return 0; -} - -static const struct hid_device_id huion_devices[] = { - { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_TABLET) }, - { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_HUION_TABLET) }, - { } -}; -MODULE_DEVICE_TABLE(hid, huion_devices); - -static struct hid_driver huion_driver = { - .name = "huion", - .id_table = huion_devices, - .probe = huion_probe, - .report_fixup = huion_report_fixup, - .raw_event = huion_raw_event, -}; -module_hid_driver(huion_driver); - -MODULE_AUTHOR("Martin Rusko"); -MODULE_DESCRIPTION("Huion HID driver"); -MODULE_LICENSE("GPL"); |