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Subject[PATCH v3 2/5] hid-multitouch: migrate support for Stantum panels to the unified driver.
Date
This patch merges hid-stantum to the generic multitouch driver.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Reviewed-by: Stéphane Chatty <chatty@enac.fr>
---

no changes since v2

drivers/hid/Kconfig | 7 +-
drivers/hid/Makefile | 1 -
drivers/hid/hid-multitouch.c | 15 +++
drivers/hid/hid-stantum.c | 286 ------------------------------------------
4 files changed, 16 insertions(+), 293 deletions(-)
delete mode 100644 drivers/hid/hid-stantum.c

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 54b9fe6..b8a81c4 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -322,6 +322,7 @@ config HID_MULTITOUCH
- 'Sensing Win7-TwoFinger' panel by GeneralTouch
- eGalax dual-touch panels, including the
Joojoo and Wetab tablets
+ - Stantum multitouch panels

If unsure, say N.

@@ -488,12 +489,6 @@ config HID_SONY
---help---
Support for Sony PS3 controller.

-config HID_STANTUM
- tristate "Stantum multitouch panel"
- depends on USB_HID
- ---help---
- Support for Stantum multitouch panel.
-
config HID_SUNPLUS
tristate "Sunplus wireless desktop"
depends on USB_HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index e904643..e568067 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -66,7 +66,6 @@ obj-$(CONFIG_HID_ROCCAT_PYRA) += hid-roccat-pyra.o
obj-$(CONFIG_HID_SAMSUNG) += hid-samsung.o
obj-$(CONFIG_HID_SMARTJOYPLUS) += hid-sjoy.o
obj-$(CONFIG_HID_SONY) += hid-sony.o
-obj-$(CONFIG_HID_STANTUM) += hid-stantum.o
obj-$(CONFIG_HID_SUNPLUS) += hid-sunplus.o
obj-$(CONFIG_HID_GREENASIA) += hid-gaff.o
obj-$(CONFIG_HID_THRUSTMASTER) += hid-tmff.o
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index b9f9eec..5983e55 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -79,6 +79,7 @@ struct mt_class {
#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 3
#define MT_CLS_CYPRESS 4
#define MT_CLS_EGALAX 5
+#define MT_CLS_STANTUM 6

#define MT_DEFAULT_MAXCONTACT 10

@@ -138,6 +139,9 @@ struct mt_class mt_classes[] = {
.sn_move = 4096,
.sn_pressure = 32,
},
+ { .name = MT_CLS_STANTUM,
+ .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
+
{ }
};

@@ -552,6 +556,17 @@ static const struct hid_device_id mt_devices[] = {
HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },

+ /* Stantum panels */
+ { .driver_data = MT_CLS_STANTUM,
+ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
+ USB_DEVICE_ID_MTP)},
+ { .driver_data = MT_CLS_STANTUM,
+ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
+ USB_DEVICE_ID_MTP_STM)},
+ { .driver_data = MT_CLS_STANTUM,
+ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
+ USB_DEVICE_ID_MTP_SITRONIX)},
+
{ }
};
MODULE_DEVICE_TABLE(hid, mt_devices);
diff --git a/drivers/hid/hid-stantum.c b/drivers/hid/hid-stantum.c
deleted file mode 100644
index b2be1d1..0000000
--- a/drivers/hid/hid-stantum.c
+++ /dev/null
@@ -1,286 +0,0 @@
-/*
- * HID driver for Stantum multitouch panels
- *
- * Copyright (c) 2009 Stephane Chatty <chatty@enac.fr>
- *
- */
-
-/*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- */
-
-#include <linux/device.h>
-#include <linux/hid.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-
-MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
-MODULE_DESCRIPTION("Stantum HID multitouch panels");
-MODULE_LICENSE("GPL");
-
-#include "hid-ids.h"
-
-struct stantum_data {
- __s32 x, y, z, w, h; /* x, y, pressure, width, height */
- __u16 id; /* touch id */
- bool valid; /* valid finger data, or just placeholder? */
- bool first; /* first finger in the HID packet? */
- bool activity; /* at least one active finger so far? */
-};
-
-static int stantum_input_mapping(struct hid_device *hdev, struct hid_input *hi,
- struct hid_field *field, struct hid_usage *usage,
- unsigned long **bit, int *max)
-{
- switch (usage->hid & HID_USAGE_PAGE) {
-
- case HID_UP_GENDESK:
- switch (usage->hid) {
- case HID_GD_X:
- hid_map_usage(hi, usage, bit, max,
- EV_ABS, ABS_MT_POSITION_X);
- /* touchscreen emulation */
- input_set_abs_params(hi->input, ABS_X,
- field->logical_minimum,
- field->logical_maximum, 0, 0);
- return 1;
- case HID_GD_Y:
- hid_map_usage(hi, usage, bit, max,
- EV_ABS, ABS_MT_POSITION_Y);
- /* touchscreen emulation */
- input_set_abs_params(hi->input, ABS_Y,
- field->logical_minimum,
- field->logical_maximum, 0, 0);
- return 1;
- }
- return 0;
-
- case HID_UP_DIGITIZER:
- switch (usage->hid) {
- case HID_DG_INRANGE:
- case HID_DG_CONFIDENCE:
- case HID_DG_INPUTMODE:
- case HID_DG_DEVICEINDEX:
- case HID_DG_CONTACTCOUNT:
- case HID_DG_CONTACTMAX:
- return -1;
-
- case HID_DG_TIPSWITCH:
- /* touchscreen emulation */
- hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
- return 1;
-
- case HID_DG_WIDTH:
- hid_map_usage(hi, usage, bit, max,
- EV_ABS, ABS_MT_TOUCH_MAJOR);
- return 1;
- case HID_DG_HEIGHT:
- hid_map_usage(hi, usage, bit, max,
- EV_ABS, ABS_MT_TOUCH_MINOR);
- input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
- 1, 1, 0, 0);
- return 1;
- case HID_DG_TIPPRESSURE:
- hid_map_usage(hi, usage, bit, max,
- EV_ABS, ABS_MT_PRESSURE);
- return 1;
-
- case HID_DG_CONTACTID:
- hid_map_usage(hi, usage, bit, max,
- EV_ABS, ABS_MT_TRACKING_ID);
- return 1;
-
- }
- return 0;
-
- case 0xff000000:
- /* no input-oriented meaning */
- return -1;
- }
-
- return 0;
-}
-
-static int stantum_input_mapped(struct hid_device *hdev, struct hid_input *hi,
- struct hid_field *field, struct hid_usage *usage,
- unsigned long **bit, int *max)
-{
- if (usage->type == EV_KEY || usage->type == EV_ABS)
- clear_bit(usage->code, *bit);
-
- return 0;
-}
-
-/*
- * this function is called when a whole finger has been parsed,
- * so that it can decide what to send to the input layer.
- */
-static void stantum_filter_event(struct stantum_data *sd,
- struct input_dev *input)
-{
- bool wide;
-
- if (!sd->valid) {
- /*
- * touchscreen emulation: if the first finger is not valid and
- * there previously was finger activity, this is a release
- */
- if (sd->first && sd->activity) {
- input_event(input, EV_KEY, BTN_TOUCH, 0);
- sd->activity = false;
- }
- return;
- }
-
- input_event(input, EV_ABS, ABS_MT_TRACKING_ID, sd->id);
- input_event(input, EV_ABS, ABS_MT_POSITION_X, sd->x);
- input_event(input, EV_ABS, ABS_MT_POSITION_Y, sd->y);
-
- wide = (sd->w > sd->h);
- input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
- input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, wide ? sd->w : sd->h);
- input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, wide ? sd->h : sd->w);
-
- input_event(input, EV_ABS, ABS_MT_PRESSURE, sd->z);
-
- input_mt_sync(input);
- sd->valid = false;
-
- /* touchscreen emulation */
- if (sd->first) {
- if (!sd->activity) {
- input_event(input, EV_KEY, BTN_TOUCH, 1);
- sd->activity = true;
- }
- input_event(input, EV_ABS, ABS_X, sd->x);
- input_event(input, EV_ABS, ABS_Y, sd->y);
- }
- sd->first = false;
-}
-
-
-static int stantum_event(struct hid_device *hid, struct hid_field *field,
- struct hid_usage *usage, __s32 value)
-{
- struct stantum_data *sd = hid_get_drvdata(hid);
-
- if (hid->claimed & HID_CLAIMED_INPUT) {
- struct input_dev *input = field->hidinput->input;
-
- switch (usage->hid) {
- case HID_DG_INRANGE:
- /* this is the last field in a finger */
- stantum_filter_event(sd, input);
- break;
- case HID_DG_WIDTH:
- sd->w = value;
- break;
- case HID_DG_HEIGHT:
- sd->h = value;
- break;
- case HID_GD_X:
- sd->x = value;
- break;
- case HID_GD_Y:
- sd->y = value;
- break;
- case HID_DG_TIPPRESSURE:
- sd->z = value;
- break;
- case HID_DG_CONTACTID:
- sd->id = value;
- break;
- case HID_DG_CONFIDENCE:
- sd->valid = !!value;
- break;
- case 0xff000002:
- /* this comes only before the first finger */
- sd->first = true;
- break;
-
- default:
- /* ignore the others */
- return 1;
- }
- }
-
- /* we have handled the hidinput part, now remains hiddev */
- if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
- hid->hiddev_hid_event(hid, field, usage, value);
-
- return 1;
-}
-
-static int stantum_probe(struct hid_device *hdev,
- const struct hid_device_id *id)
-{
- int ret;
- struct stantum_data *sd;
-
- sd = kmalloc(sizeof(struct stantum_data), GFP_KERNEL);
- if (!sd) {
- hid_err(hdev, "cannot allocate Stantum data\n");
- return -ENOMEM;
- }
- sd->valid = false;
- sd->first = false;
- sd->activity = false;
- hid_set_drvdata(hdev, sd);
-
- ret = hid_parse(hdev);
- if (!ret)
- ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
-
- if (ret)
- kfree(sd);
-
- return ret;
-}
-
-static void stantum_remove(struct hid_device *hdev)
-{
- hid_hw_stop(hdev);
- kfree(hid_get_drvdata(hdev));
- hid_set_drvdata(hdev, NULL);
-}
-
-static const struct hid_device_id stantum_devices[] = {
- { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) },
- { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, USB_DEVICE_ID_MTP_STM) },
- { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX, USB_DEVICE_ID_MTP_SITRONIX) },
- { }
-};
-MODULE_DEVICE_TABLE(hid, stantum_devices);
-
-static const struct hid_usage_id stantum_grabbed_usages[] = {
- { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
- { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
-};
-
-static struct hid_driver stantum_driver = {
- .name = "stantum",
- .id_table = stantum_devices,
- .probe = stantum_probe,
- .remove = stantum_remove,
- .input_mapping = stantum_input_mapping,
- .input_mapped = stantum_input_mapped,
- .usage_table = stantum_grabbed_usages,
- .event = stantum_event,
-};
-
-static int __init stantum_init(void)
-{
- return hid_register_driver(&stantum_driver);
-}
-
-static void __exit stantum_exit(void)
-{
- hid_unregister_driver(&stantum_driver);
-}
-
-module_init(stantum_init);
-module_exit(stantum_exit);
-
--
1.7.4
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