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Diffstat (limited to 'drivers/usb/input/mtouchusb.c')
-rw-r--r--drivers/usb/input/mtouchusb.c367
1 files changed, 367 insertions, 0 deletions
diff --git a/drivers/usb/input/mtouchusb.c b/drivers/usb/input/mtouchusb.c
new file mode 100644
index 00000000000..6b45a66d58c
--- /dev/null
+++ b/drivers/usb/input/mtouchusb.c
@@ -0,0 +1,367 @@
+/******************************************************************************
+ * mtouchusb.c -- Driver for Microtouch (Now 3M) USB Touchscreens
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Based upon original work by Radoslaw Garbacz (usb-support@ite.pl)
+ * (http://freshmeat.net/projects/3mtouchscreendriver)
+ *
+ * History
+ *
+ * 0.3 & 0.4 2002 (TEJ) tejohnson@yahoo.com
+ * Updated to 2.4.18, then 2.4.19
+ * Old version still relied on stealing a minor
+ *
+ * 0.5 02/26/2004 (TEJ) tejohnson@yahoo.com
+ * Complete rewrite using Linux Input in 2.6.3
+ * Unfortunately no calibration support at this time
+ *
+ * 1.4 04/25/2004 (TEJ) tejohnson@yahoo.com
+ * Changed reset from standard USB dev reset to vendor reset
+ * Changed data sent to host from compensated to raw coordinates
+ * Eliminated vendor/product module params
+ * Performed multiple successfull tests with an EXII-5010UC
+ *
+ * 1.5 02/27/2005 ddstreet@ieee.org
+ * Added module parameter to select raw or hw-calibrated coordinate reporting
+ *
+ *****************************************************************************/
+
+#include <linux/config.h>
+
+#ifdef CONFIG_USB_DEBUG
+ #define DEBUG
+#else
+ #undef DEBUG
+#endif
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/usb.h>
+
+#define MTOUCHUSB_MIN_XC 0x0
+#define MTOUCHUSB_MAX_RAW_XC 0x4000
+#define MTOUCHUSB_MAX_CALIB_XC 0xffff
+#define MTOUCHUSB_XC_FUZZ 0x0
+#define MTOUCHUSB_XC_FLAT 0x0
+#define MTOUCHUSB_MIN_YC 0x0
+#define MTOUCHUSB_MAX_RAW_YC 0x4000
+#define MTOUCHUSB_MAX_CALIB_YC 0xffff
+#define MTOUCHUSB_YC_FUZZ 0x0
+#define MTOUCHUSB_YC_FLAT 0x0
+
+#define MTOUCHUSB_ASYNC_REPORT 1
+#define MTOUCHUSB_RESET 7
+#define MTOUCHUSB_REPORT_DATA_SIZE 11
+#define MTOUCHUSB_REQ_CTRLLR_ID 10
+
+#define MTOUCHUSB_GET_RAW_XC(data) (data[8]<<8 | data[7])
+#define MTOUCHUSB_GET_CALIB_XC(data) (data[4]<<8 | data[3])
+#define MTOUCHUSB_GET_RAW_YC(data) (data[10]<<8 | data[9])
+#define MTOUCHUSB_GET_CALIB_YC(data) (data[6]<<8 | data[5])
+#define MTOUCHUSB_GET_XC(data) (raw_coordinates ? \
+ MTOUCHUSB_GET_RAW_XC(data) : \
+ MTOUCHUSB_GET_CALIB_XC(data))
+#define MTOUCHUSB_GET_YC(data) (raw_coordinates ? \
+ MTOUCHUSB_GET_RAW_YC(data) : \
+ MTOUCHUSB_GET_CALIB_YC(data))
+#define MTOUCHUSB_GET_TOUCHED(data) ((data[2] & 0x40) ? 1:0)
+
+#define DRIVER_VERSION "v1.5"
+#define DRIVER_AUTHOR "Todd E. Johnson, tejohnson@yahoo.com"
+#define DRIVER_DESC "3M USB Touchscreen Driver"
+#define DRIVER_LICENSE "GPL"
+
+static int raw_coordinates = 1;
+
+module_param(raw_coordinates, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(raw_coordinates, "report raw coordinate values (y, default) or hardware-calibrated coordinate values (n)");
+
+struct mtouch_usb {
+ unsigned char *data;
+ dma_addr_t data_dma;
+ struct urb *irq;
+ struct usb_device *udev;
+ struct input_dev input;
+ int open;
+ char name[128];
+ char phys[64];
+};
+
+static struct usb_device_id mtouchusb_devices [] = {
+ { USB_DEVICE(0x0596, 0x0001) },
+ { }
+};
+
+static void mtouchusb_irq(struct urb *urb, struct pt_regs *regs)
+{
+ struct mtouch_usb *mtouch = urb->context;
+ int retval;
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ETIMEDOUT:
+ /* this urb is timing out */
+ dbg("%s - urb timed out - was the device unplugged?",
+ __FUNCTION__);
+ return;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d",
+ __FUNCTION__, urb->status);
+ return;
+ default:
+ dbg("%s - nonzero urb status received: %d",
+ __FUNCTION__, urb->status);
+ goto exit;
+ }
+
+ input_regs(&mtouch->input, regs);
+ input_report_key(&mtouch->input, BTN_TOUCH,
+ MTOUCHUSB_GET_TOUCHED(mtouch->data));
+ input_report_abs(&mtouch->input, ABS_X,
+ MTOUCHUSB_GET_XC(mtouch->data));
+ input_report_abs(&mtouch->input, ABS_Y,
+ (raw_coordinates ? MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC)
+ - MTOUCHUSB_GET_YC(mtouch->data));
+ input_sync(&mtouch->input);
+
+exit:
+ retval = usb_submit_urb (urb, GFP_ATOMIC);
+ if (retval)
+ err ("%s - usb_submit_urb failed with result: %d",
+ __FUNCTION__, retval);
+}
+
+static int mtouchusb_open (struct input_dev *input)
+{
+ struct mtouch_usb *mtouch = input->private;
+
+ if (mtouch->open++)
+ return 0;
+
+ mtouch->irq->dev = mtouch->udev;
+
+ if (usb_submit_urb (mtouch->irq, GFP_ATOMIC)) {
+ mtouch->open--;
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static void mtouchusb_close (struct input_dev *input)
+{
+ struct mtouch_usb *mtouch = input->private;
+
+ if (!--mtouch->open)
+ usb_kill_urb (mtouch->irq);
+}
+
+static int mtouchusb_alloc_buffers(struct usb_device *udev, struct mtouch_usb *mtouch)
+{
+ dbg("%s - called", __FUNCTION__);
+
+ mtouch->data = usb_buffer_alloc(udev, MTOUCHUSB_REPORT_DATA_SIZE,
+ SLAB_ATOMIC, &mtouch->data_dma);
+
+ if (!mtouch->data)
+ return -1;
+
+ return 0;
+}
+
+static void mtouchusb_free_buffers(struct usb_device *udev, struct mtouch_usb *mtouch)
+{
+ dbg("%s - called", __FUNCTION__);
+
+ if (mtouch->data)
+ usb_buffer_free(udev, MTOUCHUSB_REPORT_DATA_SIZE,
+ mtouch->data, mtouch->data_dma);
+}
+
+static int mtouchusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ struct mtouch_usb *mtouch;
+ struct usb_host_interface *interface;
+ struct usb_endpoint_descriptor *endpoint;
+ struct usb_device *udev = interface_to_usbdev (intf);
+ char path[64];
+ int nRet;
+
+ dbg("%s - called", __FUNCTION__);
+
+ dbg("%s - setting interface", __FUNCTION__);
+ interface = intf->cur_altsetting;
+
+ dbg("%s - setting endpoint", __FUNCTION__);
+ endpoint = &interface->endpoint[0].desc;
+
+ if (!(mtouch = kmalloc (sizeof (struct mtouch_usb), GFP_KERNEL))) {
+ err("%s - Out of memory.", __FUNCTION__);
+ return -ENOMEM;
+ }
+
+ memset(mtouch, 0, sizeof(struct mtouch_usb));
+ mtouch->udev = udev;
+
+ dbg("%s - allocating buffers", __FUNCTION__);
+ if (mtouchusb_alloc_buffers(udev, mtouch)) {
+ mtouchusb_free_buffers(udev, mtouch);
+ kfree(mtouch);
+ return -ENOMEM;
+ }
+
+ mtouch->input.private = mtouch;
+ mtouch->input.open = mtouchusb_open;
+ mtouch->input.close = mtouchusb_close;
+
+ usb_make_path(udev, path, 64);
+ sprintf(mtouch->phys, "%s/input0", path);
+
+ mtouch->input.name = mtouch->name;
+ mtouch->input.phys = mtouch->phys;
+ mtouch->input.id.bustype = BUS_USB;
+ mtouch->input.id.vendor = le16_to_cpu(udev->descriptor.idVendor);
+ mtouch->input.id.product = le16_to_cpu(udev->descriptor.idProduct);
+ mtouch->input.id.version = le16_to_cpu(udev->descriptor.bcdDevice);
+ mtouch->input.dev = &intf->dev;
+
+ mtouch->input.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ mtouch->input.absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
+ mtouch->input.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+
+ /* Used to Scale Compensated Data and Flip Y */
+ mtouch->input.absmin[ABS_X] = MTOUCHUSB_MIN_XC;
+ mtouch->input.absmax[ABS_X] = raw_coordinates ? \
+ MTOUCHUSB_MAX_RAW_XC : MTOUCHUSB_MAX_CALIB_XC;
+ mtouch->input.absfuzz[ABS_X] = MTOUCHUSB_XC_FUZZ;
+ mtouch->input.absflat[ABS_X] = MTOUCHUSB_XC_FLAT;
+ mtouch->input.absmin[ABS_Y] = MTOUCHUSB_MIN_YC;
+ mtouch->input.absmax[ABS_Y] = raw_coordinates ? \
+ MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC;
+ mtouch->input.absfuzz[ABS_Y] = MTOUCHUSB_YC_FUZZ;
+ mtouch->input.absflat[ABS_Y] = MTOUCHUSB_YC_FLAT;
+
+ if (udev->manufacturer)
+ strcat(mtouch->name, udev->manufacturer);
+ if (udev->product)
+ sprintf(mtouch->name, "%s %s", mtouch->name, udev->product);
+
+ if (!strlen(mtouch->name))
+ sprintf(mtouch->name, "USB Touchscreen %04x:%04x",
+ mtouch->input.id.vendor, mtouch->input.id.product);
+
+ nRet = usb_control_msg(mtouch->udev,
+ usb_rcvctrlpipe(udev, 0),
+ MTOUCHUSB_RESET,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 1,
+ 0,
+ NULL,
+ 0,
+ USB_CTRL_SET_TIMEOUT);
+ dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d",
+ __FUNCTION__, nRet);
+
+ dbg("%s - usb_alloc_urb: mtouch->irq", __FUNCTION__);
+ mtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
+ if (!mtouch->irq) {
+ dbg("%s - usb_alloc_urb failed: mtouch->irq", __FUNCTION__);
+ mtouchusb_free_buffers(udev, mtouch);
+ kfree(mtouch);
+ return -ENOMEM;
+ }
+
+ dbg("%s - usb_fill_int_urb", __FUNCTION__);
+ usb_fill_int_urb(mtouch->irq,
+ mtouch->udev,
+ usb_rcvintpipe(mtouch->udev, 0x81),
+ mtouch->data,
+ MTOUCHUSB_REPORT_DATA_SIZE,
+ mtouchusb_irq,
+ mtouch,
+ endpoint->bInterval);
+
+ dbg("%s - input_register_device", __FUNCTION__);
+ input_register_device(&mtouch->input);
+
+ nRet = usb_control_msg(mtouch->udev,
+ usb_rcvctrlpipe(udev, 0),
+ MTOUCHUSB_ASYNC_REPORT,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 1,
+ 1,
+ NULL,
+ 0,
+ USB_CTRL_SET_TIMEOUT);
+ dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
+ __FUNCTION__, nRet);
+
+ printk(KERN_INFO "input: %s on %s\n", mtouch->name, path);
+ usb_set_intfdata(intf, mtouch);
+
+ return 0;
+}
+
+static void mtouchusb_disconnect(struct usb_interface *intf)
+{
+ struct mtouch_usb *mtouch = usb_get_intfdata (intf);
+
+ dbg("%s - called", __FUNCTION__);
+ usb_set_intfdata(intf, NULL);
+ if (mtouch) {
+ dbg("%s - mtouch is initialized, cleaning up", __FUNCTION__);
+ usb_kill_urb(mtouch->irq);
+ input_unregister_device(&mtouch->input);
+ usb_free_urb(mtouch->irq);
+ mtouchusb_free_buffers(interface_to_usbdev(intf), mtouch);
+ kfree(mtouch);
+ }
+}
+
+MODULE_DEVICE_TABLE (usb, mtouchusb_devices);
+
+static struct usb_driver mtouchusb_driver = {
+ .owner = THIS_MODULE,
+ .name = "mtouchusb",
+ .probe = mtouchusb_probe,
+ .disconnect = mtouchusb_disconnect,
+ .id_table = mtouchusb_devices,
+};
+
+static int __init mtouchusb_init(void) {
+ dbg("%s - called", __FUNCTION__);
+ return usb_register(&mtouchusb_driver);
+}
+
+static void __exit mtouchusb_cleanup(void) {
+ dbg("%s - called", __FUNCTION__);
+ usb_deregister(&mtouchusb_driver);
+}
+
+module_init(mtouchusb_init);
+module_exit(mtouchusb_cleanup);
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_LICENSE("GPL");
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