diff options
Diffstat (limited to 'src/hid-input.c')
| -rw-r--r-- | src/hid-input.c | 434 |
1 files changed, 434 insertions, 0 deletions
diff --git a/src/hid-input.c b/src/hid-input.c new file mode 100644 index 0000000..bcb42f8 --- /dev/null +++ b/src/hid-input.c @@ -0,0 +1,434 @@ +/* + * $Id: hid-input.c,v 1.1 2002/12/23 02:44:44 jjoganic Exp $ + * + * Copyright (c) 2000-2001 Vojtech Pavlik + * + * USB HID to Linux Input mapping module + * + * Sponsored by SuSE + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Should you need to contact me, the author, you can do so either by + * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail: + * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic + */ + +#include <linux/autoconf.h> +#if defined(CONFIG_MODVERSIONS) && !defined(MODVERSIONS) +# define MODVERSIONS +#endif + +#ifdef MODVERSIONS +#include <linux/modversions.h> +#endif + +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/input.h> +#include <linux/usb.h> + +#include "hid.h" + +#define unk KEY_UNKNOWN + +static unsigned char hid_keyboard[256] = { + 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, + 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, + 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, + 27, 43, 84, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, + 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, + 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, + 72, 73, 82, 83, 86,127,116,117, 85, 89, 90, 91, 92, 93, 94, 95, + 120,121,122,123,134,138,130,132,128,129,131,137,133,135,136,113, + 115,114,unk,unk,unk,124,unk,181,182,183,184,185,186,187,188,189, + 190,191,192,193,194,195,196,197,198,unk,unk,unk,unk,unk,unk,unk, + unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, + unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, + unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, + unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, + 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, + 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk +}; + +static struct { + __s32 x; + __s32 y; +} hid_hat_to_axis[] = {{0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; + +static void hidinput_configure_usage(struct hid_device *device, struct hid_field *field, struct hid_usage *usage) +{ + struct input_dev *input = &device->input; + int max; + unsigned long *bit; + + switch (usage->hid & HID_USAGE_PAGE) { + + case HID_UP_KEYBOARD: + + set_bit(EV_REP, input->evbit); + usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; + + if ((usage->hid & HID_USAGE) < 256) { + if (!(usage->code = hid_keyboard[usage->hid & HID_USAGE])) + return; + clear_bit(usage->code, bit); + } else + usage->code = KEY_UNKNOWN; + + break; + + case HID_UP_BUTTON: + + usage->code = ((usage->hid - 1) & 0xf) + 0x100; + usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; + + switch (field->application) { + case HID_GD_GAMEPAD: usage->code += 0x10; + case HID_GD_JOYSTICK: usage->code += 0x10; + case HID_GD_MOUSE: usage->code += 0x10; break; + default: + if (field->physical == HID_GD_POINTER) + usage->code += 0x10; + break; + } + break; + + case HID_UP_GENDESK: + + if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ + switch (usage->hid & 0xf) { + case 0x1: usage->code = KEY_POWER; break; + case 0x2: usage->code = KEY_SLEEP; break; + case 0x3: usage->code = KEY_WAKEUP; break; + default: usage->code = KEY_UNKNOWN; break; + } + usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; + break; + } + + usage->code = usage->hid & 0xf; + + if (field->report_size == 1) { + usage->code = BTN_MISC; + usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; + break; + } + + if (field->flags & HID_MAIN_ITEM_RELATIVE) { + usage->type = EV_REL; bit = input->relbit; max = REL_MAX; + break; + } + + usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; + + if (usage->hid == HID_GD_HATSWITCH) { + usage->code = ABS_HAT0X; + usage->hat_min = field->logical_minimum; + usage->hat_max = field->logical_maximum; + } + break; + + case HID_UP_LED: + + usage->code = (usage->hid - 1) & 0xf; + usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; + break; + + case HID_UP_DIGITIZER: + + switch (usage->hid & 0xff) { + + case 0x30: /* TipPressure */ + + if (!test_bit(BTN_TOUCH, input->keybit)) { + device->quirks |= HID_QUIRK_NOTOUCH; + set_bit(EV_KEY, input->evbit); + set_bit(BTN_TOUCH, input->keybit); + } + usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; + usage->code = ABS_PRESSURE; + clear_bit(usage->code, bit); + break; + + case 0x32: /* InRange */ + + usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; + switch (field->physical & 0xff) { + case 0x21: usage->code = BTN_TOOL_MOUSE; break; + case 0x22: usage->code = BTN_TOOL_FINGER; break; + default: usage->code = BTN_TOOL_PEN; break; + } + break; + + case 0x3c: /* Invert */ + + usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; + usage->code = BTN_TOOL_RUBBER; + clear_bit(usage->code, bit); + break; + + case 0x33: /* Touch */ + case 0x42: /* TipSwitch */ + case 0x43: /* TipSwitch2 */ + + device->quirks &= ~HID_QUIRK_NOTOUCH; + usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; + usage->code = BTN_TOUCH; + clear_bit(usage->code, bit); + break; + + case 0x44: /* BarrelSwitch */ + + usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; + usage->code = BTN_STYLUS; + clear_bit(usage->code, bit); + break; + + default: goto unknown; + } + break; + + case HID_UP_CONSUMER: /* USB HUT v1.1, pages 56-62 */ + + switch (usage->hid & HID_USAGE) { + case 0x000: usage->code = 0; break; + case 0x034: usage->code = KEY_SLEEP; break; + case 0x036: usage->code = BTN_MISC; break; + case 0x08a: usage->code = KEY_WWW; break; + case 0x095: usage->code = KEY_HELP; break; + + case 0x0b4: usage->code = KEY_REWIND; break; + case 0x0b5: usage->code = KEY_NEXTSONG; break; + case 0x0b6: usage->code = KEY_PREVIOUSSONG; break; + case 0x0b7: usage->code = KEY_STOPCD; break; + case 0x0b8: usage->code = KEY_EJECTCD; break; + case 0x0cd: usage->code = KEY_PLAYPAUSE; break; + + case 0x0e2: usage->code = KEY_MUTE; break; + case 0x0e9: usage->code = KEY_VOLUMEUP; break; + case 0x0ea: usage->code = KEY_VOLUMEDOWN; break; + + case 0x183: usage->code = KEY_CONFIG; break; + case 0x18a: usage->code = KEY_MAIL; break; + case 0x192: usage->code = KEY_CALC; break; + case 0x194: usage->code = KEY_FILE; break; + + case 0x21a: usage->code = KEY_UNDO; break; + case 0x21b: usage->code = KEY_COPY; break; + case 0x21c: usage->code = KEY_CUT; break; + case 0x21d: usage->code = KEY_PASTE; break; + + case 0x221: usage->code = KEY_FIND; break; + case 0x223: usage->code = KEY_HOMEPAGE; break; + case 0x224: usage->code = KEY_BACK; break; + case 0x225: usage->code = KEY_FORWARD; break; + case 0x226: usage->code = KEY_STOP; break; + case 0x227: usage->code = KEY_REFRESH; break; + case 0x22a: usage->code = KEY_BOOKMARKS; break; + + default: usage->code = KEY_UNKNOWN; break; + + } + + usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; + break; + + default: + unknown: + + if (field->report_size == 1) { + + if (field->report->type == HID_OUTPUT_REPORT) { + usage->code = LED_MISC; + usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; + break; + } + + usage->code = BTN_MISC; + usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; + break; + } + + if (field->flags & HID_MAIN_ITEM_RELATIVE) { + usage->code = REL_MISC; + usage->type = EV_REL; bit = input->relbit; max = REL_MAX; + break; + } + + usage->code = ABS_MISC; + usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; + break; + } + + set_bit(usage->type, input->evbit); + + while (usage->code <= max && test_and_set_bit(usage->code, bit)) { + usage->code = find_next_zero_bit(bit, max + 1, usage->code); + } + + if (usage->code > max) return; + + if (usage->type == EV_ABS) { + int a = field->logical_minimum; + int b = field->logical_maximum; + + input->absmin[usage->code] = a; + input->absmax[usage->code] = b; + input->absfuzz[usage->code] = (b - a) >> 8; + input->absflat[usage->code] = (b - a) >> 4; + } + + if (usage->hat_min != usage->hat_max) { + int i; + for (i = usage->code; i < usage->code + 2 && i <= max; i++) { + input->absmax[i] = 1; + input->absmin[i] = -1; + input->absfuzz[i] = 0; + input->absflat[i] = 0; + } + set_bit(usage->code + 1, input->absbit); + } +} + +void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) +{ + struct input_dev *input = &hid->input; + int *quirks = &hid->quirks; + + if (usage->hat_min != usage->hat_max) { + value = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; + if (value < 0 || value > 8) value = 0; + input_event(input, usage->type, usage->code , hid_hat_to_axis[value].x); + input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[value].y); + return; + } + + if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ + *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); + return; + } + + if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ + if (value) { + input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); + return; + } + input_event(input, usage->type, usage->code, 0); + input_event(input, usage->type, BTN_TOOL_RUBBER, 0); + return; + } + + if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ + int a = field->logical_minimum; + int b = field->logical_maximum; + input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); + } + + if((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UKNOWN */ + return; + + input_event(input, usage->type, usage->code, value); + + if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY)) + input_event(input, usage->type, usage->code, 0); +} + +static int hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) +{ + struct hid_device *hid = dev->private; + struct hid_field *field = NULL; + int offset; + + if ((offset = hid_find_field(hid, type, code, &field)) == -1) { + warn("event field not found"); + return -1; + } + + hid_set_field(field, offset, value); + hid_write_report(hid, field->report); + + return 0; +} + +static int hidinput_open(struct input_dev *dev) +{ + struct hid_device *hid = dev->private; + return hid_open(hid); +} + +static void hidinput_close(struct input_dev *dev) +{ + struct hid_device *hid = dev->private; + hid_close(hid); +} + +/* + * Register the input device; print a message. + * Configure the input layer interface + * Read all reports and initalize the absoulte field values. + */ + +int hidinput_connect(struct hid_device *hid) +{ + struct usb_device *dev = hid->dev; + struct hid_report_enum *report_enum; + struct hid_report *report; + struct list_head *list; + int i, j, k; + + for (i = 0; i < hid->maxapplication; i++) + if (IS_INPUT_APPLICATION(hid->application[i])) + break; + + if (i == hid->maxapplication) + return -1; + + hid->input.private = hid; + hid->input.event = hidinput_input_event; + hid->input.open = hidinput_open; + hid->input.close = hidinput_close; + + hid->input.name = hid->name; + hid->input.idbus = BUS_USB; + hid->input.idvendor = dev->descriptor.idVendor; + hid->input.idproduct = dev->descriptor.idProduct; + hid->input.idversion = dev->descriptor.bcdDevice; + + for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { + report_enum = hid->report_enum + k; + list = report_enum->report_list.next; + while (list != &report_enum->report_list) { + report = (struct hid_report *) list; + for (i = 0; i < report->maxfield; i++) + for (j = 0; j < report->field[i]->maxusage; j++) + hidinput_configure_usage(hid, report->field[i], report->field[i]->usage + j); + list = list->next; + } + } + + input_register_device(&hid->input); + + return 0; +} + +void hidinput_disconnect(struct hid_device *hid) +{ + input_unregister_device(&hid->input); +} |