Code:
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/list.h>
#include <linux/interrupt.h>
#include <linux/utsname.h>
#include <linux/device.h>
#include <linux/moduleparam.h>
#include <linux/fs.h>
#include <linux/poll.h>
#include <linux/types.h>
#include <linux/ctype.h>
#include <linux/cdev.h>
#include <asm/byteorder.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <asm/system.h>
#include <linux/uaccess.h>
#include <asm/unaligned.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include "zebra_mouse.h"
#include "gadget_chips.h"
#include "usbstring.c"
#include "config.c"
#include "epautoconf.c"
/*...........................................................*/
#define DRIVER_DESC "Zebra USB"
#define DRIVER_VERSION "2009.07.10"
/*...........................................................*/
static const char shortname [] = "zebra_usb";
static const char driver_desc [] = DRIVER_DESC;
/*...........................................................*/
static dev_t zebra_mouse_devno;
int is_connect = 0;
static struct class *usb_gadget_class;
/*...........................................................*/
struct zebra_mouse_dev {
spinlock_t lock; /* lock this structure */
/* lock buffer lists during read/write calls */
spinlock_t lock_zebra_mouse_io;
struct usb_gadget *gadget;
struct usb_request *req; /* for control responses */
u8 config;
s8 interface;
struct usb_ep *in_ep;
const struct usb_endpoint_descriptor *in;//œøÈëµÄ¶ËµãÃèÊö·û
/* wait until there is data to be read. */
wait_queue_head_t rx_wait;
struct list_head tx_reqs; /* List of free TX structs£¿£¿£¿£¿£¿£¿ */
struct list_head tx_reqs_active; /* List of Active TX xfers £¿£¿£¿£¿£¿£¿*/
/* Wait until there are write buffers available to use. */
wait_queue_head_t tx_wait;
/* Wait until all write buffers have been sent. */
wait_queue_head_t tx_flush_wait;
struct usb_request *current_rx_req;
size_t current_rx_bytes;
u8 *current_rx_buf;
u8 zebra_mouse_status;
u8 reset_zebra_mouse;
struct cdev zebra_mouse_cdev;//×Ö·ûÉ豞
struct device *pdev;//?????
u8 zebra_mouse_cdev_open;//?????
wait_queue_head_t wait;
};
static struct zebra_mouse_dev zebra_mouse;
/*...........................................................*/
#define QLEN qlen
#ifdef CONFIG_USB_GADGET_DUALSPEED
#define DEVSPEED USB_SPEED_HIGH
#else /* full speed (low speed doesn't do bulk) */
#define DEVSPEED USB_SPEED_FULL
#endif
/*-------------------------------------------------------------------------*/
/*....................É豞ÃèÊö·û....................*/
#define STRING_MANUFACTURER 1
#define STRING_PRODUCT 2
#define STRING_SERIALNUM 3
#define PRINTER_VENDOR_NUM 0x0408 ///¶àµãŽ¥ÃþÆÁµÄIDºÅ
#define PRINTER_PRODUCT_NUM 0x3001 ///¶àµãŽ¥ÃþÆÁµÄIDºÅ
static struct usb_device_descriptor device_desc = {
.bLength = 0x12,
.bDescriptorType = 0x01,
.bcdUSB = cpu_to_le16(0x0200),
.bDeviceClass = 0x00,
.bDeviceSubClass = 0x00,
.bDeviceProtocol = 0x00,
.bMaxPacketSize0 = 0x40,
//kljii
.idVendor = cpu_to_le16(PRINTER_VENDOR_NUM),
.idProduct = cpu_to_le16(PRINTER_PRODUCT_NUM),
.iManufacturer = STRING_MANUFACTURER,
.iProduct = STRING_PRODUCT,
.iSerialNumber = STRING_SERIALNUM,
.bNumConfigurations = 1
};
/*......................ÅäÖÃÃèÊö·û....................*/
static struct usb_config_descriptor config_desc = {
.bLength = 0x09,//sizeof config_desc,
.bDescriptorType = 0x02,//USB_DT_CONFIG£¿£¿£¿£¿£¿£¿£¿£¿£¿£¿£¿£¿0x01????
/* compute wTotalLength on the fly */
.wTotalLength = cpu_to_le16(sizeof(config_desc)),
.bNumInterfaces = 0x01,
.bConfigurationValue = 0x01,//DEV_CONFIG_VALUE,
.iConfiguration = 0x00,
.bmAttributes = 0x80,//USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
.bMaxPower = 0x32,//???????????????????
};
/*..................œÓ¿ÚÃèÊö·û.......................*/
static struct usb_interface_descriptor intf_desc = {
.bLength = 0x09,
.bDescriptorType = 0x04,//USB_DT_INTERFACE,
.bInterfaceNumber = 0x00,//DEV_CONFIG_VALUE,£¿£¿£¿£¿£¿£¿£¿£¿£¿£¿£¿£¿£¿£¿£¿
.bNumEndpoints = 0x01,
.bInterfaceClass = 0x03,//USB_CLASS_HID,
.bInterfaceSubClass = 0x00, /* Printer Sub-Class */
.bInterfaceProtocol = 0x00, /* Bi-Directional */
.iInterface = 0x00
};
/*................¶ËµãÃèÊö·û...................*/
static struct usb_endpoint_descriptor fs_ep_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,//0x07
.bDescriptorType = USB_DT_ENDPOINT,//0x05
.bEndpointAddress = USB_DIR_IN, //0x80
.bmAttributes = USB_ENDPOINT_XFER_INT,//0x03
.wMaxPacketSize = __constant_cpu_to_le16(2),//Êó±êΪ008
.bInterval = 32, // frames -> 32 msͬ²œŽ«ËͱØÐëΪ1 £¬Öжώ«ËÍΪ1-255
};
/*....................HIDÃèÊö·û....................*/
static struct usb_hid_descriptor hid_desc = {
.bLength = 0x09,
.bDescriptorType = 0x21,
.bcdHID = cpu_to_le16(0x0110),//?????????????????HID°æ±ŸºÅ 0x101
.bCountyCode = 0x21,
.bNumDescriptors = 0x01,
.bSubDescriptorType = 0x22,
.bDescriptorLength = cpu_to_le16(sizeof(report_desc))
};
/*................±š±íÃèÊö·û..................*/
u8 report_desc[] =
{
0x05,0x01,
0x09,0x02,
0xa1,0x01,
0x09,0x01,
0xa1,0x00,
0x05,0x09,
0x19,0x01,
0x29,0x03,
0x15,0x00,
0x25,0x01,
0x95,0x03,
0x75,0x01,
0x81,0x02,
0x95,0x01,
0x75,0x05,
0x81,0x01,
0x05,0x01,
0x09,0x30,
0x09,0x31,
0x09,0x38,
0x15,0x81,
0x25,0x7f,
0x75,0x08,
0x95,0x03,
0x81,0x06,
0xc0,0xc0
};
/*....................otgÃèÊö·û........................*/
static struct usb_otg_descriptor otg_descriptor = {
.bLength = sizeof otg_descriptor,
.bDescriptorType = USB_DT_OTG,
.bmAttributes = USB_OTG_SRP | USB_OTG_HNP,
};
static const struct usb_descriptor_header *otg_desc[] = {
(struct usb_descriptor_header *) &otg_descriptor,
NULL,
};
/*.....................×Ö·ûŽ®ÃèÊö·û.................*/
#define STRING_MANUFACTURER_IDX 0
#define STRING_PRODUCT_IDX 1
static char manufacturer[50];
static struct usb_string strings_dev[] = {
[STRING_MANUFACTURER_IDX].s = manufacturer,
[STRING_PRODUCT_IDX].s = DRIVER_DESC,
{ } /* end of list */
};
static struct usb_gadget_strings stringtab_dev = {
.language = 0x0409, /* en-us */
.strings = strings_dev,
};
static struct usb_gadget_strings *dev_strings[] = {
&stringtab_dev,
NULL,
};
/*................ËùÓеÄÃèÊö·û¶ŒÒª¶šÒåÕâžöœá¹¹...................*/
static const struct usb_descriptor_header *fs_zebra_mouse_function [11] = {
(struct usb_descriptor_header *) &config_desc, //add
(struct usb_descriptor_header *) &intf_desc,
(struct usb_descriptor_header *) &hid_desc,
(struct usb_descriptor_header *) &fs_ep_in_desc,//////
NULL
};
/*...............ÈçºÎ¶šÒåÁËDUALSPEED.........................*/
#ifdef CONFIG_USB_GADGET_DUALSPEED
/*
* usb 2.0 devices need to expose both high speed and full speed
* descriptors, unless they only run at full speed.
*/
static struct usb_endpoint_descriptor hs_ep_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = __constant_cpu_to_le16(2),
.bInterval = 9, // 2**(9-1) = 256 uframes -> 32 ms
};
static struct usb_qualifier_descriptor dev_qualifier = {
.bLength = sizeof dev_qualifier,
.bDescriptorType = USB_DT_DEVICE_QUALIFIER,
.bcdUSB = cpu_to_le16(0x0200),
.bDeviceClass = USB_CLASS_PRINTER,
.bNumConfigurations = 1
};
static const struct usb_descriptor_header *hs_zebra_mouse_function [11] = {
(struct usb_descriptor_header *) &otg_desc,
(struct usb_descriptor_header *) &intf_desc,
(struct usb_descriptor_header *) &hs_ep_in_desc,
NULL
};
/* maxpacket and other transfer characteristics vary by speed. */
#define ep_desc(g, hs, fs) (((g)->speed == USB_SPEED_HIGH)?(hs):(fs))
#else
/* if there's no high speed support, maxpacket doesn't change. */
#define ep_desc(g, hs, fs) (((void)(g)), (fs))
#endif /* !CONFIG_USB_GADGET_DUALSPEED */
/*-------------------------------------------------------------------------*/
static struct usb_request * zebra_mouse_req_alloc(struct usb_ep *ep, unsigned len, gfp_t gfp_flags)
{
struct usb_request *req;
req = usb_ep_alloc_request(ep, gfp_flags);
if (req != NULL) {
req->length = len;
req->buf = kmalloc(len, gfp_flags);
if (req->buf == NULL) {
usb_ep_free_request(ep, req);
return NULL;
}
}
return req;
}
static void zebra_mouse_req_free(struct usb_ep *ep, struct usb_request *req)
{
if (ep != NULL && req != NULL) {
kfree(req->buf);
usb_ep_free_request(ep, req);
}
}
static void tx_complete(struct usb_ep *ep, struct usb_request *req)
{
struct zebra_mouse_dev *dev = ep->driver_data;
switch (req->status) {
default:
printk("cichu");
//VDBG(dev, "tx err %d\n", req->status);
/* FALLTHROUGH */
case -ECONNRESET: /* unlink */
case -ESHUTDOWN: /* disconnect etc */
break;
case 0:
break;
}
spin_lock(&dev->lock);
/* Take the request struct off the active list and put it on the
* free list.
*/
list_del_init(&req->list);
list_add(&req->list, &dev->tx_reqs);
wake_up_interruptible(&dev->tx_wait);
if (likely(list_empty(&dev->tx_reqs_active)))
wake_up_interruptible(&dev->tx_flush_wait);
spin_unlock(&dev->lock);
}
/*...........................................................*/
static int zebra_mouse_open(struct inode *inode, struct file *fd)
{
struct zebra_mouse_dev *dev;
unsigned long flags;
int ret = -EBUSY;
lock_kernel();
dev = container_of(inode->i_cdev, struct zebra_mouse_dev, zebra_mouse_cdev);
spin_lock_irqsave(&dev->lock, flags);
if (!dev->zebra_mouse_cdev_open) {
dev->zebra_mouse_cdev_open = 1;
fd->private_data = dev;
ret = 0;
/* Change the zebra_mouse status to show that it's on-line. */
dev->zebra_mouse_status |= ZEBRA_MOUSE_SELECTED;
}
spin_unlock_irqrestore(&dev->lock, flags);
//BG(dev, "zebra_mouse_open returned %x\n", ret);
unlock_kernel();
return ret;
}
static int
zebra_mouse_close(struct inode *inode, struct file *fd)
{
struct zebra_mouse_dev *dev = fd->private_data;
unsigned long flags;
spin_lock_irqsave(&dev->lock, flags);
dev->zebra_mouse_cdev_open = 0;
fd->private_data = NULL;
/* Change zebra_mouse status to show that the zebra_mouse is off-line. */
dev->zebra_mouse_status &= ~ZEBRA_MOUSE_SELECTED;
spin_unlock_irqrestore(&dev->lock, flags);
//BG(dev, "zebra_mouse_close\n");
printk( "zebra_mouse_close\n");
return 0;
}
/*...........................................................*/
static ssize_t zebra_mouse_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
{
struct zebra_mouse_dev *dev = fd->private_data;
unsigned long flags;
size_t size; /* Amount of data in a TX request. */
size_t bytes_copied = 0;
struct usb_request *req;
if (!is_connect)
{
printk("USB is not connected!\n");
return -EINVAL;
}
printk("zebra_mouse_write trying to send %d bytes\n", (int)len);
if (len == 0)
return -EINVAL;
spin_lock(&dev->lock_zebra_mouse_io);
spin_lock_irqsave(&dev->lock, flags);
/* Check if a zebra_mouse reset happens while we have interrupts on */
dev->reset_zebra_mouse = 0;
/* Check if there is any available write buffers */
if (likely(list_empty(&dev->tx_reqs))) {
/* Turn interrupts back on before sleeping. */
spin_unlock_irqrestore(&dev->lock, flags);
/*
* If write buffers are available check if this is
* a NON-Blocking call or not.
*/
if (fd->f_flags & (O_NONBLOCK|O_NDELAY)) {
spin_unlock(&dev->lock_zebra_mouse_io);
return -EAGAIN;
}
/* Sleep until a write buffer is available */
wait_event_interruptible(dev->tx_wait,
(likely(!list_empty(&dev->tx_reqs))));
spin_lock_irqsave(&dev->lock, flags);
}
while (likely(!list_empty(&dev->tx_reqs)) && len) {
if (len > USB_BUFSIZE)
size = USB_BUFSIZE;
else
size = len;
req = container_of(dev->tx_reqs.next, struct usb_request,
list);
list_del_init(&req->list);
req->complete = tx_complete;
req->length = size;
/* Check if we need to send a zero length packet. */
if (len > size)
/* They will be more TX requests so no yet. */
req->zero = 0;
else
/* If the data amount is not a multple of the
* maxpacket size then send a zero length packet.
*/
req->zero = ((len % dev->in_ep->maxpacket) == 0);
/* Don't leave irqs off while doing memory copies */
spin_unlock_irqrestore(&dev->lock, flags);
if (copy_from_user(req->buf, buf, size)) {
list_add(&req->list, &dev->tx_reqs);
spin_unlock(&dev->lock_zebra_mouse_io);
return bytes_copied;
}
bytes_copied += size;
len -= size;
buf += size;
spin_lock_irqsave(&dev->lock, flags);
/* We've disconnected or reset so free the req and buffer */
if (dev->reset_zebra_mouse) {
list_add(&req->list, &dev->tx_reqs);
spin_unlock_irqrestore(&dev->lock, flags);
spin_unlock(&dev->lock_zebra_mouse_io);
return -EAGAIN;
}
if (usb_ep_queue(dev->in_ep, req, GFP_ATOMIC)) {
list_add(&req->list, &dev->tx_reqs);
spin_unlock_irqrestore(&dev->lock, flags);
spin_unlock(&dev->lock_zebra_mouse_io);
return -EAGAIN;
}
list_add(&req->list, &dev->tx_reqs_active);
}
spin_unlock_irqrestore(&dev->lock, flags);
spin_unlock(&dev->lock_zebra_mouse_io);
//BG(dev, "zebra_mouse_write sent %d bytes\n", (int)bytes_copied);
if (bytes_copied) {
return bytes_copied;
} else {
return -EAGAIN;
}
}
/*...........................................................*/
static int zebra_mouse_fsync(struct file *fd, struct dentry *dentry, int datasync)
{
struct zebra_mouse_dev *dev = fd->private_data;
unsigned long flags;
int tx_list_empty;
spin_lock_irqsave(&dev->lock, flags);
tx_list_empty = (likely(list_empty(&dev->tx_reqs)));
spin_unlock_irqrestore(&dev->lock, flags);
if (!tx_list_empty) {
/* Sleep until all data has been sent */
printk("Sleep until all data has been sent!\n");
wait_event_interruptible(dev->tx_flush_wait,
(likely(list_empty(&dev->tx_reqs_active))));
}
return 0;
}
static unsigned int zebra_mouse_poll(struct file *fd, poll_table *wait)
{
struct zebra_mouse_dev *dev = fd->private_data;
unsigned long flags;
int status = 0;
spin_lock(&dev->lock_zebra_mouse_io);
spin_lock_irqsave(&dev->lock, flags);
spin_unlock_irqrestore(&dev->lock, flags);
spin_unlock(&dev->lock_zebra_mouse_io);
poll_wait(fd, &dev->rx_wait, wait);
poll_wait(fd, &dev->tx_wait, wait);
spin_lock_irqsave(&dev->lock, flags);
if (likely(!list_empty(&dev->tx_reqs)))
status |= POLLOUT | POLLWRNORM;
spin_unlock_irqrestore(&dev->lock, flags);
return status;
}
/* used after endpoint configuration */
static struct file_operations zebra_mouse_io_operations = {
.owner = THIS_MODULE,
.open = zebra_mouse_open,
//.read = zebra_mouse_read,
.write = zebra_mouse_write,
.fsync = zebra_mouse_fsync,
.poll = zebra_mouse_poll,
///.unlocked_ioctl = zebra_mouse_ioctl,
.release = zebra_mouse_close
};
/*...........................................................*/
static int set_zebra_mouse_interface(struct zebra_mouse_dev *dev)
{
int result = 0;
dev->in = ep_desc(dev->gadget, &hs_ep_in_desc, &fs_ep_in_desc);
dev->in_ep->driver_data = dev;
result = usb_ep_enable(dev->in_ep, dev->in);
if (result != 0) {
// DBG(dev, "enable %s --> %d\n", dev->in_ep->name, result);
goto done;
}
done:
/* on error, disable any endpoints */
if (result != 0) {
(void) usb_ep_disable(dev->in_ep);
dev->in = NULL;
}
/* caller is responsible for cleanup on error */
return result;
}
/*...........................................................*/
static void zebra_mouse_reset_interface(struct zebra_mouse_dev *dev)
{
if (dev->interface < 0)
return;
// DBG(dev, "%s\n", __func__);
if (dev->in)
usb_ep_disable(dev->in_ep);
dev->interface = -1;
}
/*...........................................................*/
static int zebra_mouse_set_config(struct zebra_mouse_dev *dev, unsigned number)
{
int result = 0;
struct usb_gadget *gadget = dev->gadget;
if (gadget_is_sa1100(gadget) && dev->config) {
/* tx fifo is full, but we can't clear it...*/
// INFO(dev, "can't change configurations\n");
return -ESPIPE;
}
switch (number) {
case DEV_CONFIG_VALUE:
result = 0;
break;
default:
result = -EINVAL;
/* FALL THROUGH */
case 0:
break;
}
if (result) {
usb_gadget_vbus_draw(dev->gadget,
dev->gadget->is_otg ? 8 : 100);
} else {
char *speed;
unsigned power;
power = 2 * config_desc.bMaxPower;
usb_gadget_vbus_draw(dev->gadget, power);
switch (gadget->speed) {
case USB_SPEED_FULL: speed = "full"; break;
#ifdef CONFIG_USB_GADGET_DUALSPEED
case USB_SPEED_HIGH: speed = "high"; break;
#endif
default: speed = "?"; break;
}
dev->config = number;
// INFO(dev, "%s speed config #%d: %d mA, %s\n",
// speed, number, power, driver_desc);
}
set_zebra_mouse_interface(dev);
return result;
}
/*...........................................................*/
static int config_buf(enum usb_device_speed speed, u8 *buf, u8 type, unsigned index,
int is_otg)
{
int len;
const struct usb_descriptor_header **function;
#ifdef CONFIG_USB_GADGET_DUALSPEED
int hs = (speed == USB_SPEED_HIGH);
if (type == USB_DT_OTHER_SPEED_CONFIG)
hs = !hs;
if (hs) {
function = hs_zebra_mouse_function;
} else {
function = fs_zebra_mouse_function;
}
#else
function = fs_zebra_mouse_function;
#endif
if (index >= device_desc.bNumConfigurations)
return -EINVAL;
/* for now, don't advertise srp-only devices */
if (!is_otg)
function++;
//int usb_gadget_config_buf(const struct usb_config_descriptor *config,
// void *buf, unsigned buflen, const struct usb_descriptor_header **desc);
len = usb_gadget_config_buf(&config_desc, buf, USB_DESC_BUFSIZE,
function);
if (len < 0)
return len;
((struct usb_config_descriptor *) buf)->bDescriptorType = type;
return len;
}
/* Change our operational Interface. */
static int
set_interface(struct zebra_mouse_dev *dev, unsigned number)
{
int result = 0;
if (gadget_is_sa1100(dev->gadget) && dev->interface < 0) {
/* tx fifo is full, but we can't clear it...*/
// INFO(dev, "can't change interfaces\n");
return -ESPIPE;
}
/* Free the current interface */
switch (dev->interface) {
case ZEBRA_MOUSE_INTERFACE:
zebra_mouse_reset_interface(dev);
break;
}
switch (number) {
case ZEBRA_MOUSE_INTERFACE:
result = set_zebra_mouse_interface(dev);
if (result) {
zebra_mouse_reset_interface(dev);
} else {
dev->interface = ZEBRA_MOUSE_INTERFACE;
}
break;
default:
result = -EINVAL;
/* FALL THROUGH */
}
if (!result)
return result;
// INFO(dev, "Using interface %x\n", number);
return result;
}
/*...........................................................*/
static void zebra_mouse_setup_complete(struct usb_ep *ep, struct usb_request *req)
{
if (req->status || req->actual != req->length)
printk("do nothing");
//DBG((struct PRINTER_INTERFACE_dev *) ep->driver_data,
//"setup complete --> %d, %d/%d\n",
//req->status, req->actual, req->length);
}
/*...........................................................*/
static void zebra_mouse_soft_reset(struct zebra_mouse_dev *dev)
{
struct usb_request *req;
// INFO(dev, "Received zebra_mouse Reset Request\n");
if (usb_ep_disable(dev->in_ep))
printk("do nothing");
//DBG(dev, "Failed to disable USB in_ep\n");
dev->reset_zebra_mouse = 1;
while (likely(!(list_empty(&dev->tx_reqs_active)))) {
req = container_of(dev->tx_reqs_active.next,
struct usb_request, list);
list_del_init(&req->list);
list_add(&req->list, &dev->tx_reqs);
}
if (usb_ep_enable(dev->in_ep, dev->in))
printk("do nothing");
//DBG(dev, "Failed to enable USB in_ep\n");
wake_up_interruptible(&dev->rx_wait);
wake_up_interruptible(&dev->tx_wait);
wake_up_interruptible(&dev->tx_flush_wait);
}
/*...........................................................*/
static int zebra_mouse_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
{
struct zebra_mouse_dev *dev = get_gadget_data(gadget);
struct usb_request *req = dev->req;
int value = -EOPNOTSUPP;
u16 wIndex = le16_to_cpu(ctrl->wIndex);
u16 wValue = le16_to_cpu(ctrl->wValue);
u16 wLength = le16_to_cpu(ctrl->wLength);
// DBG(dev, "ctrl req%02x.%02x v%04x i%04x l%d\n",
// ctrl->bRequestType, ctrl->bRequest, wValue, wIndex, wLength);
// printk("ctrl req%02x.%02x v%04x i%04x l%04x\n",
// ctrl->bRequestType, ctrl->bRequest, wValue, wIndex, wLength);
req->complete = zebra_mouse_setup_complete;
switch (ctrl->bRequestType&USB_TYPE_MASK) {
case USB_TYPE_STANDARD:
// printk("USB_TYPE_STANDARD\n");
switch (ctrl->bRequest) {
case USB_REQ_GET_DESCRIPTOR:
// printk("USB_REQ_GET_DESCRIPTOR\n");
if (ctrl->bRequestType != USB_DIR_IN)
{
value = min(wLength, (u16) sizeof report_desc);
// printk("ctrl->bRequestType != USB_DIR_IN\n");
memcpy(req->buf, &report_desc, (u16)sizeof report_desc);
break;
}
switch (wValue >> 8) {
case USB_DT_DEVICE:
// printk("USB_DT_DEVICE\n");
value = min(wLength, (u16) sizeof device_desc);
// printk("wLength %d,sizeof(device_desc) %d,value %d\n",wLength,(u16) sizeof device_desc,value);
memcpy(req->buf, &device_desc, value);
break;
case USB_DT_CONFIG:
// printk("USB_DT_CONFIG\n");
// printk("wValue is %d\n",wValue);
value = config_buf(gadget->speed, req->buf,
wValue >> 8,
wValue & 0xff,
gadget->is_otg);
if (value >= 0)
value = min(wLength, (u16) value);
// printk("value %d\n",value);
break;
case USB_DT_STRING:
// printk("USB_DT_STRING\n");
value = usb_gadget_get_string(&stringtab,
wValue & 0xff, req->buf);
if (value >= 0)
value = min(wLength, (u16) value);
// printk("value %d\n",value);
break;
}
break;
case USB_REQ_SET_CONFIGURATION:
// printk("USB_REQ_SET_CONFIGURATION\n");
if (ctrl->bRequestType != 0)
break;
if (gadget->a_hnp_support)
printk("do nothing");
// DBG(dev, "HNP available\n");
else if (gadget->a_alt_hnp_support)
printk("do nothing");
// DBG(dev, "HNP needs a different root port\n");
value = zebra_mouse_set_config(dev, wValue);
break;
case USB_REQ_GET_CONFIGURATION:
// printk("USB_REQ_GET_CONFIGURATION\n");
if (ctrl->bRequestType != USB_DIR_IN)
break;
*(u8 *)req->buf = dev->config;
value = min(wLength, (u16) 1);
break;
case USB_REQ_SET_INTERFACE:
// printk("USB_REQ_SET_INTERFACE\n");
if (ctrl->bRequestType != USB_RECIP_INTERFACE ||
!dev->config)
break;
value = set_interface(dev, ZEBRA_MOUSE_INTERFACE);
break;
case USB_REQ_GET_INTERFACE:
// printk("USB_REQ_GET_INTERFACE\n");
if (ctrl->bRequestType !=
(USB_DIR_IN|USB_RECIP_INTERFACE)
|| !dev->config)
break;
*(u8 *)req->buf = dev->interface;
value = min(wLength, (u16) 1);
break;
default:
// printk("unknown ---------------\n");
goto unknown;
}
break;
case USB_TYPE_CLASS:
// printk("USB_TYPE_CLASS\n");
switch (ctrl->bRequest) {
case 0: /* Get the IEEE-1284 PNP String */
/* Only one zebra_mouse interface is supported. */
// printk("USB_TYPE_CLASS 0 ---------------\n");
if ((wIndex>>8) != ZEBRA_MOUSE_INTERFACE)
break;
value = (pnp_string[0]<<8)|pnp_string[1];
memcpy(req->buf, pnp_string, value);
// DBG(dev, "1284 PNP String: %x %s\n", value,
// &pnp_string[2]);
break;
case 1: /* Get Port Status */
/* Only one zebra_mouse interface is supported. */
// printk("USB_TYPE_CLASS 1 ---------------\n");
if (wIndex != ZEBRA_MOUSE_INTERFACE)
break;
*(u8 *)req->buf = dev->zebra_mouse_status;
value = min(wLength, (u16) 1);
break;
case 2: /* Soft Reset */
/* Only one zebra_mouse interface is supported. */
// printk("USB_TYPE_CLASS 2 ---------------\n");
if (wIndex != ZEBRA_MOUSE_INTERFACE)
break;
zebra_mouse_soft_reset(dev);
value = 0;
break;
default:
goto unknown;
}
break;
default:
unknown:
printk("do nothing");
//VDBG(dev,
//"unknown ctrl req%02x.%02x v%04x i%04x l%d\n",
// ctrl->bRequestType, ctrl->bRequest,
// wValue, wIndex, wLength);
// printk("unknown ctrl req%02x.%02x v%04x i%04x l%d\n",
// ctrl->bRequestType, ctrl->bRequest,
// wValue, wIndex, wLength);
break;
}
/* respond with data transfer before status phase? */
if (value >= 0) {
req->length = value;
req->zero = value < wLength;
value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC);
if (value < 0) {
// DBG(dev, "ep_queue --> %d\n", value);
req->status = 0;
zebra_mouse_setup_complete(gadget->ep0, req);
}
}
printk("zebra_mouse_setup end---------------\n");
is_connect = 1;
/* host either stalls (value < 0) or reports success */
return value;
}
/*...........................................................*/
static void zebra_mouse_disconnect(struct usb_gadget *gadget)
{
struct zebra_mouse_dev *dev = get_gadget_data(gadget);
unsigned long flags;
printk("zebra_mouse_disconnect begin---------------\n");
// DBG(dev, "%s\n", __func__);
spin_lock_irqsave(&dev->lock, flags);
zebra_mouse_reset_interface(dev);
spin_unlock_irqrestore(&dev->lock, flags);
is_connect = 0;
// printk("zebra_mouse_disconnect end---------------\n");
}
/*...........................................................*/
static void zebra_mouse_unbind(struct usb_gadget *gadget)
{
printk("zebra_mouse_unbind begin---------------\n");
struct zebra_mouse_dev *dev = get_gadget_data(gadget);
struct usb_request *req;
// DBG(dev, "%s\n", __func__);
/* Remove sysfs files */
device_destroy(usb_gadget_class, zebra_mouse_devno);
/* Remove Character Device */
cdev_del(&dev->zebra_mouse_cdev);
/* we must already have been disconnected ... no i/o may be active */
WARN_ON(!list_empty(&dev->tx_reqs_active));
/* Free all memory for this driver. */
while (!list_empty(&dev->tx_reqs)) {
req = container_of(dev->tx_reqs.next, struct usb_request,
list);
list_del(&req->list);
zebra_mouse_req_free(dev->in_ep, req);
}
if (dev->req) {
zebra_mouse_req_free(gadget->ep0, dev->req);
dev->req = NULL;
}
set_gadget_data(gadget, NULL);
// printk("zebra_mouse_unbind end---------------\n");
}
/*...........................................................*/
static int __init zebra_mouse_bind(struct usb_gadget *gadget)
{
printk("zebra_mouse_bind begin---------------\n");
struct zebra_mouse_dev *dev;
struct usb_ep *in_ep;
int status = -ENOMEM;
int gcnum;
size_t len;
u32 i;
struct usb_request *req;
dev = &zebra_mouse;
/* Setup the sysfs files for the zebra_mouse gadget. */
dev->pdev = device_create(usb_gadget_class, NULL, zebra_mouse_devno, shortname);
if (IS_ERR(dev->pdev)) {
//E R(dev, "Failed to create device: zebra_mouse\n");
goto fail;
}
/*
* Register a character device as an interface to a user mode
* program that handles the zebra_mouse specific functionality.
*/
cdev_init(&dev->zebra_mouse_cdev, &zebra_mouse_io_operations);
dev->zebra_mouse_cdev.owner = THIS_MODULE;
status = cdev_add(&dev->zebra_mouse_cdev, zebra_mouse_devno, 1);
if (status) {
//RROR(dev, "Failed to open char device\n");
goto fail;
}
if (gadget_is_sa1100(gadget)) {
/* hardware can't write zero length packets. */
// RROR(dev, "SA1100 controller is unsupport by this driver\n");
goto fail;
}
gcnum = usb_gadget_controller_number(gadget);
if (gcnum >= 0) {
device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum);
} else {
dev_warn(&gadget->dev, "controller '%s' not recognized\n",
gadget->name);
/* unrecognized, but safe unless bulk is REALLY quirky */
device_desc.bcdDevice =
cpu_to_le16(0xFFFF);
}
snprintf(manufacturer, sizeof(manufacturer), "%s %s with %s",
init_utsname()->sysname, init_utsname()->release,
gadget->name);
device_desc.idVendor =
cpu_to_le16(PRINTER_VENDOR_NUM);
device_desc.idProduct =
cpu_to_le16(PRINTER_PRODUCT_NUM);
/* support optional vendor/distro customization */
if (idVendor) {
if (!idProduct) {
dev_err(&gadget->dev, "idVendor needs idProduct!\n");
return -ENODEV;
}
device_desc.idVendor = cpu_to_le16(idVendor);
device_desc.idProduct = cpu_to_le16(idProduct);
if (bcdDevice)
device_desc.bcdDevice = cpu_to_le16(bcdDevice);
}
if (iManufacturer)
strlcpy(manufacturer, iManufacturer, sizeof manufacturer);
if (iProduct)
strlcpy(product_desc, iProduct, sizeof product_desc);
if (iSerialNum)
strlcpy(serial_num, iSerialNum, sizeof serial_num);
if (iPNPstring)
strlcpy(&pnp_string[2], iPNPstring, (sizeof pnp_string)-2);
len = strlen(pnp_string);
pnp_string[0] = (len >> 8) & 0xFF;
pnp_string[1] = len & 0xFF;
/* all we really need is bulk IN/OUT */
usb_ep_autoconfig_reset(gadget);
in_ep = usb_ep_autoconfig(gadget, &fs_ep_in_desc);
if (!in_ep) {
dev_err(&gadget->dev, "can't autoconfigure on %s\n",
gadget->name);
return -ENODEV;
}
in_ep->driver_data = in_ep; /* claim */
#ifdef CONFIG_USB_GADGET_DUALSPEED
/* assumes ep0 uses the same value for both speeds ... */
dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0;
/* and that all endpoints are dual-speed */
hs_ep_in_desc.bEndpointAddress = fs_ep_in_desc.bEndpointAddress;
hs_ep_out_desc.bEndpointAddress = fs_ep_out_desc.bEndpointAddress;
#endif /* DUALSPEED */
device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
usb_gadget_set_selfpowered(gadget);
//if (gadget->is_otg) {
// otg_desc.bmAttributes |= USB_OTG_HNP,
// config_desc.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
//}
spin_lock_init(&dev->lock);
spin_lock_init(&dev->lock_zebra_mouse_io);
INIT_LIST_HEAD(&dev->tx_reqs);
INIT_LIST_HEAD(&dev->tx_reqs_active);
init_waitqueue_head(&dev->tx_wait);
init_waitqueue_head(&dev->tx_flush_wait);
dev->config = 0;
dev->interface = -1;
dev->zebra_mouse_cdev_open = 0;
dev->zebra_mouse_status = ZEBRA_MOUSE_NOT_ERROR;
dev->current_rx_req = NULL;
dev->current_rx_bytes = 0;
dev->current_rx_buf = NULL;
dev->in_ep = in_ep;
/* preallocate control message data and buffer */
dev->req = zebra_mouse_req_alloc(gadget->ep0, USB_DESC_BUFSIZE,
GFP_KERNEL);
if (!dev->req) {
status = -ENOMEM;
goto fail;
}
for (i = 0; i < QLEN; i++) {
req = zebra_mouse_req_alloc(dev->in_ep, USB_BUFSIZE, GFP_KERNEL);
if (!req) {
while (!list_empty(&dev->tx_reqs)) {
req = container_of(dev->tx_reqs.next,
struct usb_request, list);
list_del(&req->list);
zebra_mouse_req_free(dev->in_ep, req);
}
return -ENOMEM;
}
list_add(&req->list, &dev->tx_reqs);
}
dev->req->complete = zebra_mouse_setup_complete;
/* finish hookup to lower layer ... */
dev->gadget = gadget;
set_gadget_data(gadget, dev);
gadget->ep0->driver_data = dev;
// INFO(dev, "%s, version: " DRIVER_VERSION "\n", driver_desc);
// INFO(dev, "using %s, IN %s \n", gadget->name, in_ep->name);
printk("zebra_mouse_bind end---------------\n");
return 0;
fail:
zebra_mouse_unbind(gadget);
return status;
}
/*...........................................................*/
static struct usb_gadget_driver zebra_mouse_driver = {
.speed = DEVSPEED,
.function = (char *) driver_desc,
.bind = zebra_mouse_bind,
.unbind = zebra_mouse_unbind,
.setup = zebra_mouse_setup,
.disconnect = zebra_mouse_disconnect,
.driver = {
.name = (char *) shortname,
.owner = THIS_MODULE,
},
};
/*...........................................................*/
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR("liven");
MODULE_LICENSE("GPL");
/*...........................................................*/
static int __init init(void)
{
int status;
printk("__init begin---------------\n");
usb_gadget_class = class_create(THIS_MODULE, shortname);
if (IS_ERR(usb_gadget_class)) {
status = PTR_ERR(usb_gadget_class);
//ERROR(dev, "unable to create zebra_mouse class %d\n", status);
return status;
}
status = alloc_chrdev_region(&zebra_mouse_devno, 0, 1,
shortname);
if (status) {
//ERROR(dev, "alloc_chrdev_region %d\n", status);
class_destroy(usb_gadget_class);
return status;
}
status = usb_gadget_register_driver(&zebra_mouse_driver);
if (status) {
class_destroy(usb_gadget_class);
unregister_chrdev_region(zebra_mouse_devno, 1);
// DBG(dev, "zebra_mouse_register_driver %x\n", status);
}
printk("__init end---------------\n");
return status;
}
module_init(init);
/*...........................................................*/
static void __exit cleanup(void)
{
printk("cleanup begin---------------\n");
int status;
spin_lock(&zebra_mouse.lock_zebra_mouse_io);
class_destroy(usb_gadget_class);
unregister_chrdev_region(zebra_mouse_devno, 2);
status = usb_gadget_unregister_driver(&zebra_mouse_driver);
if (status)
//RROR(dev, "zebra_mouse_unregister_driver %x\n", status);
spin_unlock(&zebra_mouse.lock_zebra_mouse_io);
printk("cleanup end---------------\n");
}
module_exit(cleanup);
/*...........................................................*/
when i "make modules" it shows
drivers/usb/gadget/monihid.c:184:1 5: error: variable 'hid_desc' has initializer but incomplete type
drivers/usb/gadget/monihid.c:185:2 : error: unknown field 'bLength' specified in initializer
drivers/usb/gadget/monihid.c:185:2 : warning: excess elements in struct initializer
drivers/usb/gadget/monihid.c:185:2 : warning: (near initialization for 'hid_desc')
drivers/usb/gadget/monihid.c:186:2 : error: unknown field 'bDescriptorTyp e' specified in initializer
drivers/usb/gadget/monihid.c:186:2 : warning: excess elements in struct initializer
drivers/usb/gadget/monihid.c:186:2 : warning: (near initialization for 'hid_desc')
drivers/usb/gadget/monihid.c:187:2 : error: unknown field 'bcdHID' specified in initializer
drivers/usb/gadget/monihid.c:187:2 : warning: excess elements in struct initializer
drivers/usb/gadget/monihid.c:187:2 : warning: (near initialization for 'hid_desc')
drivers/usb/gadget/monihid.c:188:2 : error: unknown field 'bCountyCode' specified in initializer
drivers/usb/gadget/monihid.c:188:2 : warning: excess elements in struct initializer
drivers/usb/gadget/monihid.c:188:2 : warning: (near initialization for 'hid_desc')
drivers/usb/gadget/monihid.c:189:2 : error: unknown field 'bNumDescriptor s' specified in initializer
drivers/usb/gadget/monihid.c:189:2 : warning: excess elements in struct initializer
drivers/usb/gadget/monihid.c:189:2 : warning: (near initialization for 'hid_desc')
drivers/usb/gadget/monihid.c:190:2 : error: unknown field 'bSubDescriptor Type' specified in initializer
drivers/usb/gadget/monihid.c:190:2 : warning: excess elements in struct initializer
drivers/usb/gadget/monihid.c:190:2 : warning: (near initialization for 'hid_desc')
drivers/usb/gadget/monihid.c:191:2 : error: unknown field 'bDescriptorLen gth' specified in initializer
drivers/usb/gadget/monihid.c:191:2 3: error: 'report_desc' undeclared here (not in a function)
drivers/usb/gadget/monihid.c:193:1 : warning: excess elements in struct initializer
drivers/usb/gadget/monihid.c:193:1 : warning: (near initialization for 'hid_desc')
drivers/usb/gadget/monihid.c: In function 'zebra_mouse_wr ite':
drivers/usb/gadget/monihid.c:493:1 3: error: 'USB_BUFSIZE' undeclared (first use in this function)
drivers/usb/gadget/monihid.c:493:1 3: note: each undeclared identifier is reported only once for each function it appears in
drivers/usb/gadget/monihid.c: At top level:
drivers/usb/gadget/monihid.c:623:2 : warning: initialization from incompatible pointer type
drivers/usb/gadget/monihid.c: In function 'zebra_mouse_se t_config':
drivers/usb/gadget/monihid.c:688:2 : error: implicit declaration of function 'gadget_is_sa11 00'
drivers/usb/gadget/monihid.c:695:7 : error: 'DEV_CONFIG_VAL UE' undeclared (first use in this function)
who can help me???
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