*****************************************************************************/
#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>
+#include <linux/usb_input.h>
#define MTOUCHUSB_MIN_XC 0x0
#define MTOUCHUSB_MAX_RAW_XC 0x4000
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];
+ unsigned char *data;
+ dma_addr_t data_dma;
+ struct urb *irq;
+ struct usb_device *udev;
+ struct input_dev *input;
+ char name[128];
+ char phys[64];
};
-static struct usb_device_id mtouchusb_devices [] = {
- { USB_DEVICE(0x0596, 0x0001) },
- { }
+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,
+ 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);
+ - 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);
+ 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)
+static int mtouchusb_open(struct input_dev *input)
{
- struct mtouch_usb *mtouch = input->private;
-
- if (mtouch->open++)
- return 0;
+ struct mtouch_usb *mtouch = input->private;
- mtouch->irq->dev = mtouch->udev;
+ mtouch->irq->dev = mtouch->udev;
- if (usb_submit_urb (mtouch->irq, GFP_ATOMIC)) {
- mtouch->open--;
- return -EIO;
- }
+ if (usb_submit_urb(mtouch->irq, GFP_ATOMIC))
+ return -EIO;
- return 0;
+ return 0;
}
-static void mtouchusb_close (struct input_dev *input)
+static void mtouchusb_close(struct input_dev *input)
{
- struct mtouch_usb *mtouch = input->private;
+ struct mtouch_usb *mtouch = input->private;
- if (!--mtouch->open)
- usb_kill_urb (mtouch->irq);
+ usb_kill_urb(mtouch->irq);
}
static int mtouchusb_alloc_buffers(struct usb_device *udev, struct mtouch_usb *mtouch)
{
- dbg("%s - called", __FUNCTION__);
+ dbg("%s - called", __FUNCTION__);
- mtouch->data = usb_buffer_alloc(udev, MTOUCHUSB_REPORT_DATA_SIZE,
- SLAB_ATOMIC, &mtouch->data_dma);
+ mtouch->data = usb_buffer_alloc(udev, MTOUCHUSB_REPORT_DATA_SIZE,
+ SLAB_ATOMIC, &mtouch->data_dma);
- if (!mtouch->data)
- return -1;
+ if (!mtouch->data)
+ return -1;
- return 0;
+ return 0;
}
static void mtouchusb_free_buffers(struct usb_device *udev, struct mtouch_usb *mtouch)
{
- dbg("%s - called", __FUNCTION__);
+ dbg("%s - called", __FUNCTION__);
- if (mtouch->data)
- usb_buffer_free(udev, MTOUCHUSB_REPORT_DATA_SIZE,
- mtouch->data, mtouch->data_dma);
+ 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;
+ struct mtouch_usb *mtouch;
+ struct input_dev *input_dev;
+ struct usb_host_interface *interface;
+ struct usb_endpoint_descriptor *endpoint;
+ struct usb_device *udev = interface_to_usbdev(intf);
+ 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;
+
+ mtouch = kzalloc(sizeof(struct mtouch_usb), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!mtouch || !input_dev) {
+ err("%s - Out of memory.", __FUNCTION__);
+ goto fail1;
+ }
+
+ dbg("%s - allocating buffers", __FUNCTION__);
+ if (mtouchusb_alloc_buffers(udev, mtouch))
+ goto fail2;
+
+ mtouch->udev = udev;
+ mtouch->input = input_dev;
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;
+ strlcpy(mtouch->name, udev->manufacturer, sizeof(mtouch->name));
+
+ if (udev->product) {
+ if (udev->manufacturer)
+ strlcat(mtouch->name, " ", sizeof(mtouch->name));
+ strlcat(mtouch->name, udev->product, sizeof(mtouch->name));
+ }
+
+ if (!strlen(mtouch->name))
+ snprintf(mtouch->name, sizeof(mtouch->name),
+ "USB Touchscreen %04x:%04x",
+ le16_to_cpu(udev->descriptor.idVendor),
+ le16_to_cpu(udev->descriptor.idProduct));
+
+ usb_make_path(udev, mtouch->phys, sizeof(mtouch->phys));
+ strlcpy(mtouch->phys, "/input0", sizeof(mtouch->phys));
+
+ input_dev->name = mtouch->name;
+ input_dev->phys = mtouch->phys;
+ usb_to_input_id(udev, &input_dev->id);
+ input_dev->cdev.dev = &intf->dev;
+ input_dev->private = mtouch;
+
+ input_dev->open = mtouchusb_open;
+ input_dev->close = mtouchusb_close;
+
+ input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+ input_set_abs_params(input_dev, ABS_X, MTOUCHUSB_MIN_XC,
+ raw_coordinates ? MTOUCHUSB_MAX_RAW_XC : MTOUCHUSB_MAX_CALIB_XC,
+ MTOUCHUSB_XC_FUZZ, MTOUCHUSB_XC_FLAT);
+ input_set_abs_params(input_dev, ABS_Y, MTOUCHUSB_MIN_YC,
+ raw_coordinates ? MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC,
+ MTOUCHUSB_YC_FUZZ, MTOUCHUSB_YC_FLAT);
+
+ 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__);
+ goto fail2;
+ }
+
+ 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);
+
+ usb_set_intfdata(intf, mtouch);
+ return 0;
+
+fail2: mtouchusb_free_buffers(udev, mtouch);
+fail1: input_free_device(input_dev);
+ kfree(mtouch);
+ return -ENOMEM;
}
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);
- }
+ 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);
+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,
+ .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 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);
+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_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
git://git.onelab.eu / linux-2.6.git / blobdiff