From: Rudy Huang <rudy_huang@xxxxxxxxxxxxxxx>
USB HID support for the Sitronix ST9RM01 multi-touch panel as an input
device.
Signed-off-by: Rudy Huang <rudy_huang@xxxxxxxxxxxxxxx>
[Trivial space fixes for Coding Style]
Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
---
drivers/hid/Kconfig | 6 +
drivers/hid/Makefile | 1
drivers/hid/hid-core.c | 1
drivers/hid/hid-ids.h | 3
drivers/hid/hid-sitronix.c | 286 ++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 297 insertions(+), 0 deletions(-)
create mode 100644 drivers/hid/hid-sitronix.c
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 6369ba7..b8101ef 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -382,6 +382,12 @@ config HID_SAMSUNG
---help---
Support for Samsung InfraRed remote control or keyboards.
+config HID_SITRONIX
+ tristate "Sitronix"
+ depends on USB_HID
+ ---help---
+ Say Y here if you have a Sitronix ST9RM01 multitouch panel.
+
config HID_SONY
tristate "Sony"
depends on USB_HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 46f037f..1854f75 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -53,6 +53,7 @@ obj-$(CONFIG_HID_PICOLCD) += hid-picolcd.o
obj-$(CONFIG_HID_ROCCAT) += hid-roccat.o
obj-$(CONFIG_HID_ROCCAT_KONE) += hid-roccat-kone.o
obj-$(CONFIG_HID_SAMSUNG) += hid-samsung.o
+obj-$(CONFIG_HID_SITRONIX) += hid-sitronix.o
obj-$(CONFIG_HID_SMARTJOYPLUS) += hid-sjoy.o
obj-$(CONFIG_HID_SONY) += hid-sony.o
obj-$(CONFIG_HID_STANTUM) += hid-stantum.o
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 0c52899..aa1dcfc 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1369,6 +1369,7 @@ static const struct hid_device_id hid_blacklist[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_SITRONIX, USB_DEVICE_ID_ST9RM01) },
{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 85c6d13..8bcc6b8 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -467,6 +467,9 @@
#define USB_DEVICE_ID_SAMSUNG_IR_REMOTE 0x0001
#define USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE 0x0600
+#define USB_VENDOR_ID_SITRONIX 0x1403
+#define USB_DEVICE_ID_ST9RM01 0x5001
+
#define USB_VENDOR_ID_SONY 0x054c
#define USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE 0x024b
#define USB_DEVICE_ID_SONY_PS3_CONTROLLER 0x0268
diff --git a/drivers/hid/hid-sitronix.c b/drivers/hid/hid-sitronix.c
new file mode 100644
index 0000000..8608b12
--- /dev/null
+++ b/drivers/hid/hid-sitronix.c
@@ -0,0 +1,286 @@
+/*
+ * HID driver for Sitronix ST9RM01 multitouch panels
+ *
+ * Copyright (c) 2010 Gaggery Tsai <gaggery.tsai@xxxxxxxxx>
+ *
+ */
+
+/*
+ * 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>
+
+#define DRIVER_AUTHOR "Sitronix, Inc."
+#define DRIVER_NAME "sitronix"
+#define DRIVER_DESC "Sitronix USB touch"
+#define DRIVER_DATE "20100903"
+#define DRIVER_MAJOR 1
+#define DRIVER_MINOR 2
+#define DRIVER_PATCHLEVEL 0
+
+MODULE_AUTHOR("Gaggery Tsai <gaggery.tsai@xxxxxxxxx>");
+MODULE_DESCRIPTION("Sitronix HID multitouch panels");
+MODULE_LICENSE("GPL");
+
+#include "hid-ids.h"
+
+struct sitronix_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 sitronix_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_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 sitronix_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 sitronix_filter_event(struct sitronix_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_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 sitronix_event(struct hid_device *hid, struct hid_field *field,
+ struct hid_usage *usage, s32 value)
+{
+ struct sitronix_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 */
+ if (value > 0)
+ sd->valid = true;
+ else
+ sd->valid = false;
+ break;
+ case HID_DG_WIDTH:
+ sd->w = value;
+ break;
+ case HID_DG_HEIGHT:
+ sd->h = value;
+ sitronix_filter_event(sd, input);
+ break;
+ case HID_GD_X:
+ sd->x = value;
+ break;
+ case HID_GD_Y:
+ sd->y = value;
+ break;
+ case HID_DG_CONTACTID:
+ if (value == 4)
+ sd->first = true;
+ sd->id = value;
+ break;
+ case HID_DG_CONFIDENCE:
+ break;
+ case HID_DG_CONTACTCOUNT:
+ /* this comes only before the first finger */
+ 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 sitronix_probe(struct hid_device *hdev,
+ const struct hid_device_id *id)
+{
+ int ret;
+ struct sitronix_data *sd;
+
+ sd = kmalloc(sizeof(struct sitronix_data), GFP_KERNEL);
+ if (!sd) {
+ dev_err(&hdev->dev, "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 sitronix_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 sitronix_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_SITRONIX, USB_DEVICE_ID_ST9RM01) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, sitronix_devices);
+
+static const struct hid_usage_id sitronix_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 sitronix_driver = {
+ .name = "sitronix",
+ .id_table = sitronix_devices,
+ .probe = sitronix_probe,
+ .remove = sitronix_remove,
+ .input_mapping = sitronix_input_mapping,
+ .input_mapped = sitronix_input_mapped,
+ .usage_table = sitronix_grabbed_usages,
+ .event = sitronix_event,
+};
+
+static int __init sitronix_init(void)
+{
+ return hid_register_driver(&sitronix_driver);
+}
+
+static void __exit sitronix_exit(void)
+{
+ hid_unregister_driver(&sitronix_driver);
+}
+
+module_init(sitronix_init);
+module_exit(sitronix_exit);
+
--
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