^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* -*- linux-c -*-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) GTCO digitizer USB driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) TO CHECK: Is pressure done right on report 5?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) Copyright (C) 2006 GTCO CalComp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) This program is free software; you can redistribute it and/or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) modify it under the terms of the GNU General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) as published by the Free Software Foundation; version 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) of the License.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) This program is distributed in the hope that it will be useful,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) but WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) GNU General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) You should have received a copy of the GNU General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) along with this program; if not, write to the Free Software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) Permission to use, copy, modify, distribute, and sell this software and its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) documentation for any purpose is hereby granted without fee, provided that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) the above copyright notice appear in all copies and that both that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) copyright notice and this permission notice appear in supporting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) documentation, and that the name of GTCO-CalComp not be used in advertising
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) or publicity pertaining to distribution of the software without specific,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) written prior permission. GTCO-CalComp makes no representations about the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) suitability of this software for any purpose. It is provided "as is"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) without express or implied warranty.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) GTCO-CALCOMP DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) EVENT SHALL GTCO-CALCOMP BE LIABLE FOR ANY SPECIAL, INDIRECT OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) TORTIOUS ACTIONS, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) PERFORMANCE OF THIS SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) GTCO CalComp, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 7125 Riverwood Drive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) Columbia, MD 21046
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) Jeremy Roberson jroberson@gtcocalcomp.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) Scott Hill shill@gtcocalcomp.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /*#define DEBUG*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #include <linux/usb/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* Version with a Major number of 2 is for kernel inclusion only. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define GTCO_VERSION "2.00.0006"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* MACROS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define VENDOR_ID_GTCO 0x078C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define PID_400 0x400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #define PID_401 0x401
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define PID_1000 0x1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define PID_1001 0x1001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define PID_1002 0x1002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /* Max size of a single report */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define REPORT_MAX_SIZE 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define MAX_COLLECTION_LEVELS 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* Bitmask whether pen is in range */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define MASK_INRANGE 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define MASK_BUTTON 0x01F
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define PATHLENGTH 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /* DATA STRUCTURES */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /* Device table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static const struct usb_device_id gtco_usbid_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) { USB_DEVICE(VENDOR_ID_GTCO, PID_400) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) { USB_DEVICE(VENDOR_ID_GTCO, PID_401) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) { USB_DEVICE(VENDOR_ID_GTCO, PID_1000) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) { USB_DEVICE(VENDOR_ID_GTCO, PID_1001) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) { USB_DEVICE(VENDOR_ID_GTCO, PID_1002) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) MODULE_DEVICE_TABLE (usb, gtco_usbid_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /* Structure to hold all of our device specific stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct gtco {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct input_dev *inputdevice; /* input device struct pointer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct usb_interface *intf; /* the usb interface for this device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct urb *urbinfo; /* urb for incoming reports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) dma_addr_t buf_dma; /* dma addr of the data buffer*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) unsigned char * buffer; /* databuffer for reports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) char usbpath[PATHLENGTH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) int openCount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) /* Information pulled from Report Descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) u32 usage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) u32 min_X;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) u32 max_X;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) u32 min_Y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) u32 max_Y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) s8 mintilt_X;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) s8 maxtilt_X;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) s8 mintilt_Y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) s8 maxtilt_Y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) u32 maxpressure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) u32 minpressure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /* Code for parsing the HID REPORT DESCRIPTOR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /* From HID1.11 spec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) struct hid_descriptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct usb_descriptor_header header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) __le16 bcdHID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) u8 bCountryCode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) u8 bNumDescriptors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) u8 bDescriptorType;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) __le16 wDescriptorLength;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) } __attribute__ ((packed));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #define HID_DESCRIPTOR_SIZE 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #define HID_DEVICE_TYPE 33
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) #define REPORT_DEVICE_TYPE 34
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #define PREF_TAG(x) ((x)>>4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define PREF_TYPE(x) ((x>>2)&0x03)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) #define PREF_SIZE(x) ((x)&0x03)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #define TYPE_MAIN 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #define TYPE_GLOBAL 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #define TYPE_LOCAL 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) #define TYPE_RESERVED 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) #define TAG_MAIN_INPUT 0x8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) #define TAG_MAIN_OUTPUT 0x9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #define TAG_MAIN_FEATURE 0xB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) #define TAG_MAIN_COL_START 0xA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #define TAG_MAIN_COL_END 0xC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) #define TAG_GLOB_USAGE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) #define TAG_GLOB_LOG_MIN 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) #define TAG_GLOB_LOG_MAX 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) #define TAG_GLOB_PHYS_MIN 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) #define TAG_GLOB_PHYS_MAX 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) #define TAG_GLOB_UNIT_EXP 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) #define TAG_GLOB_UNIT 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) #define TAG_GLOB_REPORT_SZ 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) #define TAG_GLOB_REPORT_ID 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) #define TAG_GLOB_REPORT_CNT 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) #define TAG_GLOB_PUSH 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) #define TAG_GLOB_POP 11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) #define TAG_GLOB_MAX 12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) #define DIGITIZER_USAGE_TIP_PRESSURE 0x30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) #define DIGITIZER_USAGE_TILT_X 0x3D
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) #define DIGITIZER_USAGE_TILT_Y 0x3E
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * This is an abbreviated parser for the HID Report Descriptor. We
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * know what devices we are talking to, so this is by no means meant
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * to be generic. We can make some safe assumptions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * - We know there are no LONG tags, all short
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * - We know that we have no MAIN Feature and MAIN Output items
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * - We know what the IRQ reports are supposed to look like.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * The main purpose of this is to use the HID report desc to figure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * out the mins and maxs of the fields in the IRQ reports. The IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * reports for 400/401 change slightly if the max X is bigger than 64K.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) static void parse_hid_report_descriptor(struct gtco *device, char * report,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) int length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) struct device *ddev = &device->intf->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) int x, i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /* Tag primitive vars */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) __u8 prefix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) __u8 size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) __u8 tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) __u8 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) __u8 data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) __u16 data16 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) __u32 data32 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) /* For parsing logic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) int inputnum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) __u32 usage = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) /* Global Values, indexed by TAG */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) __u32 globalval[TAG_GLOB_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) __u32 oldval[TAG_GLOB_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) /* Debug stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) char maintype = 'x';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) char globtype[12];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) int indent = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) char indentstr[MAX_COLLECTION_LEVELS + 1] = { 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) dev_dbg(ddev, "======>>>>>>PARSE<<<<<<======\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /* Walk this report and pull out the info we need */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) while (i < length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) prefix = report[i++];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) /* Determine data size and save the data in the proper variable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) size = (1U << PREF_SIZE(prefix)) >> 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) if (i + size > length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) dev_err(ddev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) "Not enough data (need %d, have %d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) i + size, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) switch (size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) data = report[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) data16 = get_unaligned_le16(&report[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) data32 = get_unaligned_le32(&report[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) /* Skip size of data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) i += size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) /* What we do depends on the tag type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) tag = PREF_TAG(prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) type = PREF_TYPE(prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) case TYPE_MAIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) strcpy(globtype, "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) switch (tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) case TAG_MAIN_INPUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * The INPUT MAIN tag signifies this is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * information from a report. We need to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * figure out what it is and store the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * min/max values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) maintype = 'I';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (data == 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) strcpy(globtype, "Variable");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) else if (data == 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) strcpy(globtype, "Var|Const");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) dev_dbg(ddev, "::::: Saving Report: %d input #%d Max: 0x%X(%d) Min:0x%X(%d) of %d bits\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) globalval[TAG_GLOB_REPORT_ID], inputnum,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) globalval[TAG_GLOB_LOG_MAX], globalval[TAG_GLOB_LOG_MAX],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) globalval[TAG_GLOB_LOG_MIN], globalval[TAG_GLOB_LOG_MIN],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) globalval[TAG_GLOB_REPORT_SZ] * globalval[TAG_GLOB_REPORT_CNT]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) We can assume that the first two input items
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) are always the X and Y coordinates. After
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) that, we look for everything else by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) local usage value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) switch (inputnum) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) case 0: /* X coord */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) dev_dbg(ddev, "GER: X Usage: 0x%x\n", usage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) if (device->max_X == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) device->max_X = globalval[TAG_GLOB_LOG_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) device->min_X = globalval[TAG_GLOB_LOG_MIN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) case 1: /* Y coord */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) dev_dbg(ddev, "GER: Y Usage: 0x%x\n", usage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) if (device->max_Y == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) device->max_Y = globalval[TAG_GLOB_LOG_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) device->min_Y = globalval[TAG_GLOB_LOG_MIN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) /* Tilt X */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (usage == DIGITIZER_USAGE_TILT_X) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (device->maxtilt_X == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) device->maxtilt_X = globalval[TAG_GLOB_LOG_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) device->mintilt_X = globalval[TAG_GLOB_LOG_MIN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) /* Tilt Y */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (usage == DIGITIZER_USAGE_TILT_Y) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (device->maxtilt_Y == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) device->maxtilt_Y = globalval[TAG_GLOB_LOG_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) device->mintilt_Y = globalval[TAG_GLOB_LOG_MIN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) /* Pressure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (usage == DIGITIZER_USAGE_TIP_PRESSURE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (device->maxpressure == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) device->maxpressure = globalval[TAG_GLOB_LOG_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) device->minpressure = globalval[TAG_GLOB_LOG_MIN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) inputnum++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) case TAG_MAIN_OUTPUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) maintype = 'O';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) case TAG_MAIN_FEATURE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) maintype = 'F';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) case TAG_MAIN_COL_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) maintype = 'S';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) if (indent == MAX_COLLECTION_LEVELS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) dev_err(ddev, "Collection level %d would exceed limit of %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) indent + 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) MAX_COLLECTION_LEVELS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) if (data == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) dev_dbg(ddev, "======>>>>>> Physical\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) strcpy(globtype, "Physical");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) dev_dbg(ddev, "======>>>>>>\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) /* Indent the debug output */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) indent++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) for (x = 0; x < indent; x++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) indentstr[x] = '-';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) indentstr[x] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) /* Save global tags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) for (x = 0; x < TAG_GLOB_MAX; x++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) oldval[x] = globalval[x];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) case TAG_MAIN_COL_END:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) maintype = 'E';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) if (indent == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) dev_err(ddev, "Collection level already at zero\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) dev_dbg(ddev, "<<<<<<======\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) indent--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) for (x = 0; x < indent; x++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) indentstr[x] = '-';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) indentstr[x] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) /* Copy global tags back */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) for (x = 0; x < TAG_GLOB_MAX; x++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) globalval[x] = oldval[x];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) switch (size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) dev_dbg(ddev, "%sMAINTAG:(%d) %c SIZE: %d Data: %s 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) indentstr, tag, maintype, size, globtype, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) dev_dbg(ddev, "%sMAINTAG:(%d) %c SIZE: %d Data: %s 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) indentstr, tag, maintype, size, globtype, data16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) dev_dbg(ddev, "%sMAINTAG:(%d) %c SIZE: %d Data: %s 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) indentstr, tag, maintype, size, globtype, data32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) case TYPE_GLOBAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) switch (tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) case TAG_GLOB_USAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) * First time we hit the global usage tag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) * it should tell us the type of device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) if (device->usage == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) device->usage = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) strcpy(globtype, "USAGE");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) case TAG_GLOB_LOG_MIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) strcpy(globtype, "LOG_MIN");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) case TAG_GLOB_LOG_MAX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) strcpy(globtype, "LOG_MAX");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) case TAG_GLOB_PHYS_MIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) strcpy(globtype, "PHYS_MIN");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) case TAG_GLOB_PHYS_MAX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) strcpy(globtype, "PHYS_MAX");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) case TAG_GLOB_UNIT_EXP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) strcpy(globtype, "EXP");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) case TAG_GLOB_UNIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) strcpy(globtype, "UNIT");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) case TAG_GLOB_REPORT_SZ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) strcpy(globtype, "REPORT_SZ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) case TAG_GLOB_REPORT_ID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) strcpy(globtype, "REPORT_ID");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) /* New report, restart numbering */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) inputnum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) case TAG_GLOB_REPORT_CNT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) strcpy(globtype, "REPORT_CNT");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) case TAG_GLOB_PUSH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) strcpy(globtype, "PUSH");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) case TAG_GLOB_POP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) strcpy(globtype, "POP");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) /* Check to make sure we have a good tag number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) so we don't overflow array */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (tag < TAG_GLOB_MAX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) switch (size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) dev_dbg(ddev, "%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) indentstr, globtype, tag, size, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) globalval[tag] = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) dev_dbg(ddev, "%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) indentstr, globtype, tag, size, data16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) globalval[tag] = data16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) dev_dbg(ddev, "%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) indentstr, globtype, tag, size, data32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) globalval[tag] = data32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) dev_dbg(ddev, "%sGLOBALTAG: ILLEGAL TAG:%d SIZE: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) indentstr, tag, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) case TYPE_LOCAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) switch (tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) case TAG_GLOB_USAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) strcpy(globtype, "USAGE");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) /* Always 1 byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) usage = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) case TAG_GLOB_LOG_MIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) strcpy(globtype, "MIN");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) case TAG_GLOB_LOG_MAX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) strcpy(globtype, "MAX");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) strcpy(globtype, "UNKNOWN");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) switch (size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) dev_dbg(ddev, "%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) indentstr, tag, globtype, size, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) dev_dbg(ddev, "%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) indentstr, tag, globtype, size, data16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) dev_dbg(ddev, "%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) indentstr, tag, globtype, size, data32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) /* INPUT DRIVER Routines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) * Called when opening the input device. This will submit the URB to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) * the usb system so we start getting reports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) static int gtco_input_open(struct input_dev *inputdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) struct gtco *device = input_get_drvdata(inputdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) device->urbinfo->dev = interface_to_usbdev(device->intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (usb_submit_urb(device->urbinfo, GFP_KERNEL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) * Called when closing the input device. This will unlink the URB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) static void gtco_input_close(struct input_dev *inputdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) struct gtco *device = input_get_drvdata(inputdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) usb_kill_urb(device->urbinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) * Setup input device capabilities. Tell the input system what this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) * device is capable of generating.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) * This information is based on what is read from the HID report and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) * placed in the struct gtco structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) static void gtco_setup_caps(struct input_dev *inputdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) struct gtco *device = input_get_drvdata(inputdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) /* Which events */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) inputdev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) BIT_MASK(EV_MSC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) /* Misc event menu block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) inputdev->mscbit[0] = BIT_MASK(MSC_SCAN) | BIT_MASK(MSC_SERIAL) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) BIT_MASK(MSC_RAW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) /* Absolute values based on HID report info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) input_set_abs_params(inputdev, ABS_X, device->min_X, device->max_X,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) input_set_abs_params(inputdev, ABS_Y, device->min_Y, device->max_Y,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) /* Proximity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) input_set_abs_params(inputdev, ABS_DISTANCE, 0, 1, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) /* Tilt & pressure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) input_set_abs_params(inputdev, ABS_TILT_X, device->mintilt_X,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) device->maxtilt_X, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) input_set_abs_params(inputdev, ABS_TILT_Y, device->mintilt_Y,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) device->maxtilt_Y, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) input_set_abs_params(inputdev, ABS_PRESSURE, device->minpressure,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) device->maxpressure, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) /* Transducer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) input_set_abs_params(inputdev, ABS_MISC, 0, 0xFF, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) /* USB Routines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) * URB callback routine. Called when we get IRQ reports from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) * digitizer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * This bridges the USB and input device worlds. It generates events
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) * on the input device based on the USB reports.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) static void gtco_urb_callback(struct urb *urbinfo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) struct gtco *device = urbinfo->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) struct input_dev *inputdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) u32 val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) char le_buffer[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) inputdev = device->inputdevice;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) /* Was callback OK? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (urbinfo->status == -ECONNRESET ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) urbinfo->status == -ENOENT ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) urbinfo->status == -ESHUTDOWN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) /* Shutdown is occurring. Return and don't queue up any more */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) if (urbinfo->status != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) * Some unknown error. Hopefully temporary. Just go and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) * requeue an URB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) goto resubmit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) * Good URB, now process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) /* PID dependent when we interpret the report */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) if (inputdev->id.product == PID_1000 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) inputdev->id.product == PID_1001 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) inputdev->id.product == PID_1002) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) * Switch on the report ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) * Conveniently, the reports have more information, the higher
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) * the report number. We can just fall through the case
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) * statements if we start with the highest number report
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) switch (device->buffer[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) case 5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) /* Pressure is 9 bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) val = ((u16)(device->buffer[8]) << 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) val |= (u16)(device->buffer[7] >> 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) input_report_abs(inputdev, ABS_PRESSURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) device->buffer[8]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) /* Mask out the Y tilt value used for pressure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) device->buffer[7] = (u8)((device->buffer[7]) & 0x7F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) /* Tilt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) input_report_abs(inputdev, ABS_TILT_X,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) sign_extend32(device->buffer[6], 6));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) input_report_abs(inputdev, ABS_TILT_Y,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) sign_extend32(device->buffer[7], 6));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) /* Convert buttons, only 5 bits possible */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) val = (device->buffer[5]) & MASK_BUTTON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) /* We don't apply any meaning to the bitmask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) just report */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) input_event(inputdev, EV_MSC, MSC_SERIAL, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) /* All reports have X and Y coords in the same place */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) val = get_unaligned_le16(&device->buffer[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) input_report_abs(inputdev, ABS_X, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) val = get_unaligned_le16(&device->buffer[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) input_report_abs(inputdev, ABS_Y, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) /* Ditto for proximity bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) val = device->buffer[5] & MASK_INRANGE ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) input_report_abs(inputdev, ABS_DISTANCE, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) /* Report 1 is an exception to how we handle buttons */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) /* Buttons are an index, not a bitmask */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) if (device->buffer[0] == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) * Convert buttons, 5 bit index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) * Report value of index set as one,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) * the rest as 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) val = device->buffer[5] & MASK_BUTTON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) dev_dbg(&device->intf->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) "======>>>>>>REPORT 1: val 0x%X(%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) val, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) * We don't apply any meaning to the button
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) * index, just report it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) input_event(inputdev, EV_MSC, MSC_SERIAL, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) case 7:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) /* Menu blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) input_event(inputdev, EV_MSC, MSC_SCAN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) device->buffer[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) /* Other pid class */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) if (inputdev->id.product == PID_400 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) inputdev->id.product == PID_401) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) /* Report 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) if (device->buffer[0] == 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) /* Menu blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) input_event(inputdev, EV_MSC, MSC_SCAN, device->buffer[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) /* Report 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) if (device->buffer[0] == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) char buttonbyte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) /* IF X max > 64K, we still a bit from the y report */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) if (device->max_X > 0x10000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) val = (u16)(((u16)(device->buffer[2] << 8)) | (u8)device->buffer[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) val |= (u32)(((u8)device->buffer[3] & 0x1) << 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) input_report_abs(inputdev, ABS_X, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) le_buffer[0] = (u8)((u8)(device->buffer[3]) >> 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) le_buffer[0] |= (u8)((device->buffer[3] & 0x1) << 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) le_buffer[1] = (u8)(device->buffer[4] >> 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) le_buffer[1] |= (u8)((device->buffer[5] & 0x1) << 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) val = get_unaligned_le16(le_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) input_report_abs(inputdev, ABS_Y, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) * Shift the button byte right by one to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) * make it look like the standard report
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) buttonbyte = device->buffer[5] >> 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) val = get_unaligned_le16(&device->buffer[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) input_report_abs(inputdev, ABS_X, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) val = get_unaligned_le16(&device->buffer[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) input_report_abs(inputdev, ABS_Y, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) buttonbyte = device->buffer[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) /* BUTTONS and PROXIMITY */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) val = buttonbyte & MASK_INRANGE ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) input_report_abs(inputdev, ABS_DISTANCE, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) /* Convert buttons, only 4 bits possible */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) val = buttonbyte & 0x0F;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) #ifdef USE_BUTTONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) for (i = 0; i < 5; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) input_report_key(inputdev, BTN_DIGI + i, val & (1 << i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) /* We don't apply any meaning to the bitmask, just report */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) input_event(inputdev, EV_MSC, MSC_SERIAL, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) /* TRANSDUCER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) input_report_abs(inputdev, ABS_MISC, device->buffer[6]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) /* Everybody gets report ID's */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) input_event(inputdev, EV_MSC, MSC_RAW, device->buffer[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) /* Sync it up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) input_sync(inputdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) resubmit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) rc = usb_submit_urb(urbinfo, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) if (rc != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) dev_err(&device->intf->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) "usb_submit_urb failed rc=0x%x\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * The probe routine. This is called when the kernel find the matching USB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) * vendor/product. We do the following:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) * - Allocate mem for a local structure to manage the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) * - Request a HID Report Descriptor from the device and parse it to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) * find out the device parameters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) * - Create an input device and assign it attributes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) * - Allocate an URB so the device can talk to us when the input
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) * queue is open
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) static int gtco_probe(struct usb_interface *usbinterface,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) const struct usb_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) struct gtco *gtco;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) struct hid_descriptor *hid_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) char *report;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) int result = 0, retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) struct usb_endpoint_descriptor *endpoint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) struct usb_device *udev = interface_to_usbdev(usbinterface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) /* Allocate memory for device structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) gtco = kzalloc(sizeof(struct gtco), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) input_dev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) if (!gtco || !input_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) dev_err(&usbinterface->dev, "No more memory\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) goto err_free_devs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) /* Set pointer to the input device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) gtco->inputdevice = input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) /* Save interface information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) gtco->intf = usbinterface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) /* Allocate some data for incoming reports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) gtco->buffer = usb_alloc_coherent(udev, REPORT_MAX_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) GFP_KERNEL, >co->buf_dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) if (!gtco->buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) dev_err(&usbinterface->dev, "No more memory for us buffers\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) goto err_free_devs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) /* Allocate URB for reports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) gtco->urbinfo = usb_alloc_urb(0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) if (!gtco->urbinfo) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) dev_err(&usbinterface->dev, "Failed to allocate URB\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) goto err_free_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) /* Sanity check that a device has an endpoint */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) if (usbinterface->cur_altsetting->desc.bNumEndpoints < 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) dev_err(&usbinterface->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) "Invalid number of endpoints\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) error = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) goto err_free_urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) endpoint = &usbinterface->cur_altsetting->endpoint[0].desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) /* Some debug */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) dev_dbg(&usbinterface->dev, "gtco # interfaces: %d\n", usbinterface->num_altsetting);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) dev_dbg(&usbinterface->dev, "num endpoints: %d\n", usbinterface->cur_altsetting->desc.bNumEndpoints);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) dev_dbg(&usbinterface->dev, "interface class: %d\n", usbinterface->cur_altsetting->desc.bInterfaceClass);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) dev_dbg(&usbinterface->dev, "endpoint: attribute:0x%x type:0x%x\n", endpoint->bmAttributes, endpoint->bDescriptorType);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) if (usb_endpoint_xfer_int(endpoint))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) dev_dbg(&usbinterface->dev, "endpoint: we have interrupt endpoint\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) dev_dbg(&usbinterface->dev, "interface extra len:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) usbinterface->cur_altsetting->extralen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) * Find the HID descriptor so we can find out the size of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) * HID report descriptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) if (usb_get_extra_descriptor(usbinterface->cur_altsetting,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) HID_DEVICE_TYPE, &hid_desc) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) dev_err(&usbinterface->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) "Can't retrieve exta USB descriptor to get hid report descriptor length\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) error = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) goto err_free_urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) dev_dbg(&usbinterface->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) "Extra descriptor success: type:%d len:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) hid_desc->bDescriptorType, hid_desc->wDescriptorLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) report = kzalloc(le16_to_cpu(hid_desc->wDescriptorLength), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) if (!report) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) dev_err(&usbinterface->dev, "No more memory for report\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) goto err_free_urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) /* Couple of tries to get reply */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) for (retry = 0; retry < 3; retry++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) result = usb_control_msg(udev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) usb_rcvctrlpipe(udev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) USB_REQ_GET_DESCRIPTOR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) USB_RECIP_INTERFACE | USB_DIR_IN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) REPORT_DEVICE_TYPE << 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) 0, /* interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) report,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) le16_to_cpu(hid_desc->wDescriptorLength),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) 5000); /* 5 secs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) dev_dbg(&usbinterface->dev, "usb_control_msg result: %d\n", result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) if (result == le16_to_cpu(hid_desc->wDescriptorLength)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) parse_hid_report_descriptor(gtco, report, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) kfree(report);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) /* If we didn't get the report, fail */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) if (result != le16_to_cpu(hid_desc->wDescriptorLength)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) dev_err(&usbinterface->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) "Failed to get HID Report Descriptor of size: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) hid_desc->wDescriptorLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) error = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) goto err_free_urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) /* Create a device file node */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) usb_make_path(udev, gtco->usbpath, sizeof(gtco->usbpath));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) strlcat(gtco->usbpath, "/input0", sizeof(gtco->usbpath));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) /* Set Input device functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) input_dev->open = gtco_input_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) input_dev->close = gtco_input_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) /* Set input device information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) input_dev->name = "GTCO_CalComp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) input_dev->phys = gtco->usbpath;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) input_set_drvdata(input_dev, gtco);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) /* Now set up all the input device capabilities */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) gtco_setup_caps(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) /* Set input device required ID information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) usb_to_input_id(udev, &input_dev->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) input_dev->dev.parent = &usbinterface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) /* Setup the URB, it will be posted later on open of input device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) usb_fill_int_urb(gtco->urbinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) udev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) usb_rcvintpipe(udev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) endpoint->bEndpointAddress),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) gtco->buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) REPORT_MAX_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) gtco_urb_callback,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) gtco,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) endpoint->bInterval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) gtco->urbinfo->transfer_dma = gtco->buf_dma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) gtco->urbinfo->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) /* Save gtco pointer in USB interface gtco */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) usb_set_intfdata(usbinterface, gtco);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) /* All done, now register the input device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) error = input_register_device(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) goto err_free_urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) err_free_urb:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) usb_free_urb(gtco->urbinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) err_free_buf:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) usb_free_coherent(udev, REPORT_MAX_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) gtco->buffer, gtco->buf_dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) err_free_devs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) input_free_device(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) kfree(gtco);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) * This function is a standard USB function called when the USB device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) * is disconnected. We will get rid of the URV, de-register the input
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) * device, and free up allocated memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) static void gtco_disconnect(struct usb_interface *interface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) /* Grab private device ptr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) struct gtco *gtco = usb_get_intfdata(interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) struct usb_device *udev = interface_to_usbdev(interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) /* Now reverse all the registration stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) if (gtco) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) input_unregister_device(gtco->inputdevice);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) usb_kill_urb(gtco->urbinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) usb_free_urb(gtco->urbinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) usb_free_coherent(udev, REPORT_MAX_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) gtco->buffer, gtco->buf_dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) kfree(gtco);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) dev_info(&interface->dev, "gtco driver disconnected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) /* STANDARD MODULE LOAD ROUTINES */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) static struct usb_driver gtco_driverinfo_table = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) .name = "gtco",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) .id_table = gtco_usbid_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) .probe = gtco_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) .disconnect = gtco_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) module_usb_driver(gtco_driverinfo_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) MODULE_DESCRIPTION("GTCO digitizer USB driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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