From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/usb/input/mtouchusb.c | 367 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 367 insertions(+) create mode 100644 drivers/usb/input/mtouchusb.c (limited to 'drivers/usb/input/mtouchusb.c') 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 + +#ifdef CONFIG_USB_DEBUG + #define DEBUG +#else + #undef DEBUG +#endif + +#include +#include +#include +#include +#include +#include + +#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"); -- cgit v1.2.3