USB: add driver for Meywa-Denki & Kayac YUREX
Meywa-Denki/Kayac YUREX is a leg-shakes sensor device. See http://bbu.kayac.com/en/about/ for further information. This driver support read/write the leg-shakes counter in the device via a device file /dev/yurex[0-9]*. [minor coding style cleanups fixed by gregkh] Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@gmail.com> Cc: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Tomoki Sekiyama
Greg Kroah-Hartman
parent
3323b7107e
commit
6bc235a2e2
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@ -1662,6 +1662,7 @@ static const struct hid_device_id hid_ignore_list[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_JESS_YUREX) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
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@ -304,6 +304,9 @@
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#define USB_VENDOR_ID_IMATION 0x0718
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#define USB_DEVICE_ID_DISC_STAKKA 0xd000
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#define USB_VENDOR_ID_JESS 0x0c45
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#define USB_DEVICE_ID_JESS_YUREX 0x1010
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#define USB_VENDOR_ID_KBGEAR 0x084e
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#define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
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@ -231,3 +231,16 @@ config USB_ISIGHTFW
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driver beforehand. Tools for doing so are available at
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http://bersace03.free.fr
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config USB_YUREX
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tristate "USB YUREX driver support"
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depends on USB
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help
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Say Y here if you want to connect a YUREX to your computer's
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USB port. The YUREX is a leg-shakes sensor. See
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<http://bbu.kayac.com/en/> for further information.
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This driver supports read/write of leg-shakes counter and
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fasync for the counter update via a device file /dev/yurex*.
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To compile this driver as a module, choose M here: the
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module will be called yurex.
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@ -22,6 +22,7 @@ obj-$(CONFIG_USB_TEST) += usbtest.o
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obj-$(CONFIG_USB_TRANCEVIBRATOR) += trancevibrator.o
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obj-$(CONFIG_USB_USS720) += uss720.o
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obj-$(CONFIG_USB_SEVSEG) += usbsevseg.o
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obj-$(CONFIG_USB_YUREX) += yurex.o
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obj-$(CONFIG_USB_SISUSBVGA) += sisusbvga/
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@ -0,0 +1,552 @@
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/*
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* Driver for Meywa-Denki & KAYAC YUREX
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*
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* Copyright (C) 2010 Tomoki Sekiyama (tomoki.sekiyama@gmail.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/kref.h>
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#include <linux/mutex.h>
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#include <linux/uaccess.h>
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#include <linux/usb.h>
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#include <linux/hid.h>
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#define DRIVER_AUTHOR "Tomoki Sekiyama"
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#define DRIVER_DESC "Driver for Meywa-Denki & KAYAC YUREX"
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#define YUREX_VENDOR_ID 0x0c45
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#define YUREX_PRODUCT_ID 0x1010
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#define CMD_ACK '!'
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#define CMD_ANIMATE 'A'
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#define CMD_COUNT 'C'
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#define CMD_LED 'L'
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#define CMD_READ 'R'
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#define CMD_SET 'S'
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#define CMD_VERSION 'V'
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#define CMD_EOF 0x0d
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#define CMD_PADDING 0xff
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#define YUREX_BUF_SIZE 8
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#define YUREX_WRITE_TIMEOUT (HZ)
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/* table of devices that work with this driver */
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static struct usb_device_id yurex_table[] = {
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{ USB_DEVICE(YUREX_VENDOR_ID, YUREX_PRODUCT_ID) },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, yurex_table);
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#ifdef CONFIG_USB_DYNAMIC_MINORS
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#define YUREX_MINOR_BASE 0
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#else
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#define YUREX_MINOR_BASE 224 /* not official yet */
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#endif
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/* Structure to hold all of our device specific stuff */
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struct usb_yurex {
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struct usb_device *udev;
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struct usb_interface *interface;
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__u8 int_in_endpointAddr;
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struct urb *urb; /* URB for interrupt in */
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unsigned char *int_buffer; /* buffer for intterupt in */
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struct urb *cntl_urb; /* URB for control msg */
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struct usb_ctrlrequest *cntl_req; /* req for control msg */
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unsigned char *cntl_buffer; /* buffer for control msg */
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struct kref kref;
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struct mutex io_mutex;
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struct fasync_struct *async_queue;
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wait_queue_head_t waitq;
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spinlock_t lock;
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__s64 bbu; /* BBU from device */
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};
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#define to_yurex_dev(d) container_of(d, struct usb_yurex, kref)
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static struct usb_driver yurex_driver;
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static const struct file_operations yurex_fops;
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static void yurex_control_callback(struct urb *urb)
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{
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struct usb_yurex *dev = urb->context;
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int status = urb->status;
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if (status) {
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err("%s - control failed: %d¥n", __func__, status);
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wake_up_interruptible(&dev->waitq);
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return;
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}
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/* on success, sender woken up by CMD_ACK int in, or timeout */
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}
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static void yurex_delete(struct kref *kref)
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{
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struct usb_yurex *dev = to_yurex_dev(kref);
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dbg("yurex_delete");
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usb_put_dev(dev->udev);
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if (dev->urb) {
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usb_kill_urb(dev->urb);
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if (dev->int_buffer)
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usb_free_coherent(dev->udev, YUREX_BUF_SIZE,
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dev->int_buffer, dev->urb->transfer_dma);
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usb_free_urb(dev->urb);
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}
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kfree(dev);
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}
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/*
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* usb class driver info in order to get a minor number from the usb core,
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* and to have the device registered with the driver core
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*/
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static struct usb_class_driver yurex_class = {
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.name = "yurex%d",
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.fops = &yurex_fops,
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.minor_base = YUREX_MINOR_BASE,
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};
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static void yurex_interrupt(struct urb *urb)
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{
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struct usb_yurex *dev = urb->context;
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unsigned char *buf = dev->int_buffer;
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int status = urb->status;
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unsigned long flags;
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int retval, i;
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switch (status) {
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case 0: /*success*/
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break;
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case -EOVERFLOW:
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err("%s - overflow with length %d, actual length is %d",
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__func__, YUREX_BUF_SIZE, dev->urb->actual_length);
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case -ECONNRESET:
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case -ENOENT:
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case -ESHUTDOWN:
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case -EILSEQ:
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/* The device is terminated, clean up */
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return;
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default:
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err("%s - unknown status received: %d", __func__, status);
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goto exit;
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}
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/* handle received message */
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switch (buf[0]) {
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case CMD_COUNT:
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case CMD_READ:
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if (buf[6] == CMD_EOF) {
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spin_lock_irqsave(&dev->lock, flags);
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dev->bbu = 0;
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for (i = 1; i < 6; i++) {
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dev->bbu += buf[i];
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if (i != 5)
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dev->bbu <<= 8;
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}
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dbg("%s count: %lld", __func__, dev->bbu);
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spin_unlock_irqrestore(&dev->lock, flags);
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kill_fasync(&dev->async_queue, SIGIO, POLL_IN);
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}
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else
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dbg("data format error - no EOF");
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break;
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case CMD_ACK:
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dbg("%s ack: %c", __func__, buf[1]);
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wake_up_interruptible(&dev->waitq);
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break;
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}
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exit:
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retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
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if (retval) {
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err("%s - usb_submit_urb failed: %d",
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__func__, retval);
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}
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}
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static int yurex_probe(struct usb_interface *interface, const struct usb_device_id *id)
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{
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struct usb_yurex *dev;
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struct usb_host_interface *iface_desc;
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struct usb_endpoint_descriptor *endpoint;
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int retval = -ENOMEM;
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int i;
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DEFINE_WAIT(wait);
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/* allocate memory for our device state and initialize it */
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (!dev) {
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err("Out of memory");
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goto error;
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}
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kref_init(&dev->kref);
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mutex_init(&dev->io_mutex);
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spin_lock_init(&dev->lock);
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init_waitqueue_head(&dev->waitq);
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dev->udev = usb_get_dev(interface_to_usbdev(interface));
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dev->interface = interface;
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/* set up the endpoint information */
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iface_desc = interface->cur_altsetting;
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for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
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endpoint = &iface_desc->endpoint[i].desc;
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if (usb_endpoint_is_int_in(endpoint)) {
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dev->int_in_endpointAddr = endpoint->bEndpointAddress;
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break;
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}
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}
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if (!dev->int_in_endpointAddr) {
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retval = -ENODEV;
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err("Could not find endpoints");
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goto error;
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}
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/* allocate control URB */
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dev->cntl_urb = usb_alloc_urb(0, GFP_KERNEL);
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if (!dev->cntl_urb) {
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err("Could not allocate control URB");
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goto error;
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}
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/* allocate buffer for control req */
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dev->cntl_req = usb_alloc_coherent(dev->udev, YUREX_BUF_SIZE,
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GFP_KERNEL,
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&dev->cntl_urb->setup_dma);
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if (!dev->cntl_req) {
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err("Could not allocate cntl_req");
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goto error;
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}
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/* allocate buffer for control msg */
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dev->cntl_buffer = usb_alloc_coherent(dev->udev, YUREX_BUF_SIZE,
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GFP_KERNEL,
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&dev->cntl_urb->transfer_dma);
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if (!dev->cntl_buffer) {
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err("Could not allocate cntl_buffer");
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goto error;
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}
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/* configure control URB */
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dev->cntl_req->bRequestType = USB_DIR_OUT | USB_TYPE_CLASS |
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USB_RECIP_INTERFACE;
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dev->cntl_req->bRequest = HID_REQ_SET_REPORT;
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dev->cntl_req->wValue = cpu_to_le16((HID_OUTPUT_REPORT + 1) << 8);
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dev->cntl_req->wIndex = cpu_to_le16(iface_desc->desc.bInterfaceNumber);
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dev->cntl_req->wLength = cpu_to_le16(YUREX_BUF_SIZE);
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usb_fill_control_urb(dev->cntl_urb, dev->udev,
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usb_sndctrlpipe(dev->udev, 0),
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(void *)dev->cntl_req, dev->cntl_buffer,
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YUREX_BUF_SIZE, yurex_control_callback, dev);
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dev->cntl_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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/* allocate interrupt URB */
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dev->urb = usb_alloc_urb(0, GFP_KERNEL);
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if (!dev->urb) {
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err("Could not allocate URB");
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goto error;
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}
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/* allocate buffer for interrupt in */
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dev->int_buffer = usb_alloc_coherent(dev->udev, YUREX_BUF_SIZE,
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GFP_KERNEL, &dev->urb->transfer_dma);
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if (!dev->int_buffer) {
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err("Could not allocate int_buffer");
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goto error;
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}
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/* configure interrupt URB */
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usb_fill_int_urb(dev->urb, dev->udev,
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usb_rcvintpipe(dev->udev, dev->int_in_endpointAddr),
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dev->int_buffer, YUREX_BUF_SIZE, yurex_interrupt,
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dev, 1);
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if (usb_submit_urb(dev->urb, GFP_KERNEL)) {
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retval = -EIO;
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err("Could not submitting URB");
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goto error;
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}
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/* save our data pointer in this interface device */
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usb_set_intfdata(interface, dev);
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/* we can register the device now, as it is ready */
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retval = usb_register_dev(interface, &yurex_class);
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if (retval) {
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err("Not able to get a minor for this device.");
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usb_set_intfdata(interface, NULL);
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goto error;
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}
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dev->bbu = -1;
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dev_info(&interface->dev,
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"USB Yurex device now attached to Yurex-%d¥n",
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interface->minor);
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return 0;
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error:
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if (dev)
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/* this frees allocated memory */
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kref_put(&dev->kref, yurex_delete);
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return retval;
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}
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static void yurex_disconnect(struct usb_interface *interface)
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{
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struct usb_yurex *dev;
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int minor = interface->minor;
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dev = usb_get_intfdata(interface);
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usb_set_intfdata(interface, NULL);
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/* give back our minor */
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usb_deregister_dev(interface, &yurex_class);
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/* prevent more I/O from starting */
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mutex_lock(&dev->io_mutex);
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dev->interface = NULL;
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mutex_unlock(&dev->io_mutex);
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/* wakeup waiters */
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kill_fasync(&dev->async_queue, SIGIO, POLL_IN);
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wake_up_interruptible(&dev->waitq);
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/* decrement our usage count */
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kref_put(&dev->kref, yurex_delete);
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dev_info(&interface->dev, "USB Yurex #%d now disconnected", minor);
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}
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static struct usb_driver yurex_driver = {
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.name = "yurex",
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.probe = yurex_probe,
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.disconnect = yurex_disconnect,
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.id_table = yurex_table,
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};
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static int yurex_fasync(int fd, struct file *file, int on)
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{
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struct usb_yurex *dev;
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dev = (struct usb_yurex *)file->private_data;
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return fasync_helper(fd, file, on, &dev->async_queue);
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}
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static int yurex_open(struct inode *inode, struct file *file)
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{
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struct usb_yurex *dev;
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struct usb_interface *interface;
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int subminor;
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int retval = 0;
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subminor = iminor(inode);
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interface = usb_find_interface(&yurex_driver, subminor);
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if (!interface) {
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err("%s - error, can't find device for minor %d",
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__func__, subminor);
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retval = -ENODEV;
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goto exit;
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}
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dev = usb_get_intfdata(interface);
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if (!dev) {
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retval = -ENODEV;
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goto exit;
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}
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/* increment our usage count for the device */
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kref_get(&dev->kref);
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/* save our object in the file's private structure */
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mutex_lock(&dev->io_mutex);
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file->private_data = dev;
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mutex_unlock(&dev->io_mutex);
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exit:
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return retval;
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}
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static int yurex_release(struct inode *inode, struct file *file)
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{
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struct usb_yurex *dev;
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dev = (struct usb_yurex *)file->private_data;
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if (dev == NULL)
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return -ENODEV;
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yurex_fasync(-1, file, 0);
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/* decrement the count on our device */
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kref_put(&dev->kref, yurex_delete);
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return 0;
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}
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static ssize_t yurex_read(struct file *file, char *buffer, size_t count, loff_t *ppos)
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{
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struct usb_yurex *dev;
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int retval = 0;
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int bytes_read = 0;
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char in_buffer[20];
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unsigned long flags;
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dev = (struct usb_yurex *)file->private_data;
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mutex_lock(&dev->io_mutex);
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if (!dev->interface) { /* already disconnected */
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retval = -ENODEV;
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goto exit;
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}
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|
||||
spin_lock_irqsave(&dev->lock, flags);
|
||||
bytes_read = snprintf(in_buffer, 20, "%lld¥n", dev->bbu);
|
||||
spin_unlock_irqrestore(&dev->lock, flags);
|
||||
|
||||
if (*ppos < bytes_read) {
|
||||
if (copy_to_user(buffer, in_buffer + *ppos, bytes_read - *ppos))
|
||||
retval = -EFAULT;
|
||||
else {
|
||||
retval = bytes_read - *ppos;
|
||||
*ppos += bytes_read;
|
||||
}
|
||||
}
|
||||
|
||||
exit:
|
||||
mutex_unlock(&dev->io_mutex);
|
||||
return retval;
|
||||
}
|
||||
|
||||
static ssize_t yurex_write(struct file *file, const char *user_buffer, size_t count, loff_t *ppos)
|
||||
{
|
||||
struct usb_yurex *dev;
|
||||
int i, set = 0, retval = 0;
|
||||
char buffer[16];
|
||||
char *data = buffer;
|
||||
unsigned long long c, c2 = 0;
|
||||
signed long timeout = 0;
|
||||
DEFINE_WAIT(wait);
|
||||
|
||||
count = min(sizeof(buffer), count);
|
||||
dev = (struct usb_yurex *)file->private_data;
|
||||
|
||||
/* verify that we actually have some data to write */
|
||||
if (count == 0)
|
||||
goto error;
|
||||
|
||||
mutex_lock(&dev->io_mutex);
|
||||
if (!dev->interface) { /* alreaday disconnected */
|
||||
mutex_unlock(&dev->io_mutex);
|
||||
retval = -ENODEV;
|
||||
goto error;
|
||||
}
|
||||
|
||||
if (copy_from_user(buffer, user_buffer, count)) {
|
||||
mutex_unlock(&dev->io_mutex);
|
||||
retval = -EFAULT;
|
||||
goto error;
|
||||
}
|
||||
memset(dev->cntl_buffer, CMD_PADDING, YUREX_BUF_SIZE);
|
||||
|
||||
switch (buffer[0]) {
|
||||
case CMD_ANIMATE:
|
||||
case CMD_LED:
|
||||
dev->cntl_buffer[0] = buffer[0];
|
||||
dev->cntl_buffer[1] = buffer[1];
|
||||
dev->cntl_buffer[2] = CMD_EOF;
|
||||
break;
|
||||
case CMD_READ:
|
||||
case CMD_VERSION:
|
||||
dev->cntl_buffer[0] = buffer[0];
|
||||
dev->cntl_buffer[1] = 0x00;
|
||||
dev->cntl_buffer[2] = CMD_EOF;
|
||||
break;
|
||||
case CMD_SET:
|
||||
data++;
|
||||
/* FALL THROUGH */
|
||||
case '0' ... '9':
|
||||
set = 1;
|
||||
c = c2 = simple_strtoull(data, NULL, 0);
|
||||
dev->cntl_buffer[0] = CMD_SET;
|
||||
for (i = 1; i < 6; i++) {
|
||||
dev->cntl_buffer[i] = (c>>32) & 0xff;
|
||||
c <<= 8;
|
||||
}
|
||||
buffer[6] = CMD_EOF;
|
||||
break;
|
||||
default:
|
||||
mutex_unlock(&dev->io_mutex);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* send the data as the control msg */
|
||||
prepare_to_wait(&dev->waitq, &wait, TASK_INTERRUPTIBLE);
|
||||
dbg("%s - submit %c", __func__, dev->cntl_buffer[0]);
|
||||
retval = usb_submit_urb(dev->cntl_urb, GFP_KERNEL);
|
||||
if (retval >= 0)
|
||||
timeout = schedule_timeout(YUREX_WRITE_TIMEOUT);
|
||||
finish_wait(&dev->waitq, &wait);
|
||||
|
||||
mutex_unlock(&dev->io_mutex);
|
||||
|
||||
if (retval < 0) {
|
||||
err("%s - failed to send bulk msg, error %d", __func__, retval);
|
||||
goto error;
|
||||
}
|
||||
if (set && timeout)
|
||||
dev->bbu = c2;
|
||||
return timeout ? count : -EIO;
|
||||
|
||||
error:
|
||||
return retval;
|
||||
}
|
||||
|
||||
static const struct file_operations yurex_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.read = yurex_read,
|
||||
.write = yurex_write,
|
||||
.open = yurex_open,
|
||||
.release = yurex_release,
|
||||
.fasync = yurex_fasync,
|
||||
};
|
||||
|
||||
|
||||
static int __init usb_yurex_init(void)
|
||||
{
|
||||
int result;
|
||||
|
||||
/* register this driver with the USB subsystem */
|
||||
result = usb_register(&yurex_driver);
|
||||
if (result)
|
||||
err("usb_register failed. Error number %d", result);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static void __exit usb_yurex_exit(void)
|
||||
{
|
||||
/* deregister this driver with the USB subsystem */
|
||||
usb_deregister(&yurex_driver);
|
||||
}
|
||||
|
||||
module_init(usb_yurex_init);
|
||||
module_exit(usb_yurex_exit);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue