HID: add support for Stantum multitouch panel
Added support for the Stantum multitouch panel. Signed-off-by: Stephane Chatty <chatty@enac.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Stephane Chatty
Jiri Kosina
parent
4b186f7203
commit
d3fb5454a8
@ -247,6 +247,12 @@ config HID_SONY
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---help---
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Support for Sony PS3 controller.
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config HID_STANTUM
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tristate "Stantum" if EMBEDDED
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depends on USB_HID
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---help---
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Support for Stantum multitouch panel.
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config HID_SUNPLUS
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tristate "Sunplus" if EMBEDDED
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depends on USB_HID
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@ -40,6 +40,7 @@ obj-$(CONFIG_HID_PETALYNX) += hid-petalynx.o
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obj-$(CONFIG_HID_SAMSUNG) += hid-samsung.o
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obj-$(CONFIG_HID_SMARTJOYPLUS) += hid-sjoy.o
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obj-$(CONFIG_HID_SONY) += hid-sony.o
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obj-$(CONFIG_HID_STANTUM) += hid-stantum.o
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obj-$(CONFIG_HID_SUNPLUS) += hid-sunplus.o
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obj-$(CONFIG_HID_GREENASIA) += hid-gaff.o
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obj-$(CONFIG_HID_THRUSTMASTER) += hid-tmff.o
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@ -1339,6 +1339,7 @@ static const struct hid_device_id hid_blacklist[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
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@ -393,6 +393,9 @@
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#define USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST 0x0034
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#define USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST 0x0046
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#define USB_VENDOR_ID_STANTUM 0x1f87
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#define USB_DEVICE_ID_MTP 0x0002
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#define USB_VENDOR_ID_SUN 0x0430
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#define USB_DEVICE_ID_RARITAN_KVM_DONGLE 0xcdab
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283
drivers/hid/hid-stantum.c
Normal file
283
drivers/hid/hid-stantum.c
Normal file
@ -0,0 +1,283 @@
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/*
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* HID driver for Stantum multitouch panels
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*
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* Copyright (c) 2009 Stephane Chatty <chatty@enac.fr>
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*
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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MODULE_VERSION("0.6");
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MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
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MODULE_DESCRIPTION("Stantum HID multitouch panels");
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MODULE_LICENSE("GPL");
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#include "hid-ids.h"
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struct stantum_data {
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__s32 x, y, z, w, h; /* x, y, pressure, width, height */
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__u16 id; /* touch id */
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bool valid; /* valid finger data, or just placeholder? */
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bool first; /* first finger in the HID packet? */
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bool activity; /* at least one active finger so far? */
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};
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static int stantum_input_mapping(struct hid_device *hdev, struct hid_input *hi,
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struct hid_field *field, struct hid_usage *usage,
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unsigned long **bit, int *max)
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{
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switch (usage->hid & HID_USAGE_PAGE) {
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case HID_UP_GENDESK:
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switch (usage->hid) {
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case HID_GD_X:
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hid_map_usage(hi, usage, bit, max,
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EV_ABS, ABS_MT_POSITION_X);
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/* touchscreen emulation */
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input_set_abs_params(hi->input, ABS_X,
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field->logical_minimum,
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field->logical_maximum, 0, 0);
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return 1;
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case HID_GD_Y:
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hid_map_usage(hi, usage, bit, max,
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EV_ABS, ABS_MT_POSITION_Y);
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/* touchscreen emulation */
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input_set_abs_params(hi->input, ABS_Y,
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field->logical_minimum,
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field->logical_maximum, 0, 0);
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return 1;
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}
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return 0;
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case HID_UP_DIGITIZER:
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switch (usage->hid) {
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case HID_DG_INRANGE:
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case HID_DG_CONFIDENCE:
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case HID_DG_INPUTMODE:
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case HID_DG_DEVICEINDEX:
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case HID_DG_CONTACTCOUNT:
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case HID_DG_CONTACTMAX:
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case HID_DG_TIPPRESSURE:
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return -1;
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case HID_DG_TIPSWITCH:
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/* touchscreen emulation */
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hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
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return 1;
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case HID_DG_WIDTH:
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hid_map_usage(hi, usage, bit, max,
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EV_ABS, ABS_MT_TOUCH_MAJOR);
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return 1;
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case HID_DG_HEIGHT:
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hid_map_usage(hi, usage, bit, max,
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EV_ABS, ABS_MT_TOUCH_MINOR);
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input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
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1, 1, 0, 0);
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return 1;
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case HID_DG_CONTACTID:
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hid_map_usage(hi, usage, bit, max,
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EV_ABS, ABS_MT_TRACKING_ID);
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return 1;
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}
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return 0;
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case 0xff000000:
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/* no input-oriented meaning */
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return -1;
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}
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return 0;
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}
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static int stantum_input_mapped(struct hid_device *hdev, struct hid_input *hi,
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struct hid_field *field, struct hid_usage *usage,
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unsigned long **bit, int *max)
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{
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if (usage->type == EV_KEY || usage->type == EV_ABS)
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clear_bit(usage->code, *bit);
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return 0;
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}
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/*
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* this function is called when a whole finger has been parsed,
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* so that it can decide what to send to the input layer.
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*/
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static void stantum_filter_event(struct stantum_data *sd,
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struct input_dev *input)
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{
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bool wide;
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if (!sd->valid) {
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/*
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* touchscreen emulation: if the first finger is not valid and
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* there previously was finger activity, this is a release
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*/
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if (sd->first && sd->activity) {
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input_event(input, EV_KEY, BTN_TOUCH, 0);
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sd->activity = false;
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}
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return;
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}
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input_event(input, EV_ABS, ABS_MT_TRACKING_ID, sd->id);
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input_event(input, EV_ABS, ABS_MT_POSITION_X, sd->x);
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input_event(input, EV_ABS, ABS_MT_POSITION_Y, sd->y);
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wide = (sd->w > sd->h);
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input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
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input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, wide ? sd->w : sd->h);
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input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, wide ? sd->h : sd->w);
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#if 0
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/* MT_PRESSURE does not exist yet */
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input_event(input, EV_ABS, ABS_MT_PRESSURE, sd->z);
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#endif
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input_mt_sync(input);
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sd->valid = false;
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sd->first = false;
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/* touchscreen emulation */
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if (sd->first) {
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if (!sd->activity) {
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input_event(input, EV_KEY, BTN_TOUCH, 1);
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sd->activity = true;
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}
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input_event(input, EV_ABS, ABS_X, sd->x);
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input_event(input, EV_ABS, ABS_Y, sd->y);
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}
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}
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static int stantum_event(struct hid_device *hid, struct hid_field *field,
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struct hid_usage *usage, __s32 value)
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{
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struct stantum_data *sd = hid_get_drvdata(hid);
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if (hid->claimed & HID_CLAIMED_INPUT) {
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struct input_dev *input = field->hidinput->input;
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switch (usage->hid) {
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case HID_DG_INRANGE:
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/* this is the last field in a finger */
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stantum_filter_event(sd, input);
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break;
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case HID_DG_WIDTH:
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sd->w = value;
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break;
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case HID_DG_HEIGHT:
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sd->h = value;
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break;
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case HID_GD_X:
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sd->x = value;
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break;
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case HID_GD_Y:
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sd->y = value;
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break;
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case HID_DG_TIPPRESSURE:
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sd->z = value;
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break;
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case HID_DG_CONTACTID:
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sd->id = value;
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break;
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case HID_DG_CONFIDENCE:
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sd->valid = !!value;
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break;
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case 0xff000002:
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/* this comes only before the first finger */
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sd->first = true;
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break;
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default:
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/* ignore the others */
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return 1;
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}
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}
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/* we have handled the hidinput part, now remains hiddev */
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if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
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hid->hiddev_hid_event(hid, field, usage, value);
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return 1;
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}
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static int stantum_probe(struct hid_device *hdev,
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const struct hid_device_id *id)
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{
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int ret;
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struct stantum_data *sd;
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sd = kmalloc(sizeof(struct stantum_data), GFP_KERNEL);
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if (!sd) {
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dev_err(&hdev->dev, "cannot allocate Stantum data\n");
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return -ENOMEM;
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}
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sd->valid = false;
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sd->first = false;
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sd->activity = false;
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hid_set_drvdata(hdev, sd);
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ret = hid_parse(hdev);
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if (!ret)
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ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
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if (ret)
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kfree(sd);
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return ret;
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}
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static void stantum_remove(struct hid_device *hdev)
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{
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hid_hw_stop(hdev);
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kfree(hid_get_drvdata(hdev));
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hid_set_drvdata(hdev, NULL);
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}
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static const struct hid_device_id stantum_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, stantum_devices);
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static const struct hid_usage_id stantum_grabbed_usages[] = {
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{ HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
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{ HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
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};
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static struct hid_driver stantum_driver = {
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.name = "stantum",
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.id_table = stantum_devices,
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.probe = stantum_probe,
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.remove = stantum_remove,
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.input_mapping = stantum_input_mapping,
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.input_mapped = stantum_input_mapped,
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.usage_table = stantum_grabbed_usages,
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.event = stantum_event,
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};
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static int __init stantum_init(void)
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{
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return hid_register_driver(&stantum_driver);
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}
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static void __exit stantum_exit(void)
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{
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hid_unregister_driver(&stantum_driver);
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}
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module_init(stantum_init);
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module_exit(stantum_exit);
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