patch-2.4.4-sl811hs

Cy3662在Linux下的驱程开发

diff -urN -X dontdiff linux-vanilla/drivers/usb/Config.in linux/drivers/usb/Config.in
--- linux-vanilla/drivers/usb/Config.in	Tue Feb 19 12:01:32 2002
+++ linux/drivers/usb/Config.in	Fri Nov  9 11:33:59 2001
@@ -24,6 +24,7 @@
       dep_tristate '  UHCI Alternate Driver (JE) support' CONFIG_USB_UHCI_ALT $CONFIG_USB
    fi
    dep_tristate '  OHCI (Compaq, iMacs, OPTi, SiS, ALi, ...) support' CONFIG_USB_OHCI $CONFIG_USB
+   dep_tristate 'SL811HS   support' CONFIG_USB_SL811HS $CONFIG_USB
 
    comment 'USB Device Class drivers'
    dep_tristate '  USB Audio support' CONFIG_USB_AUDIO $CONFIG_USB $CONFIG_SOUND
diff -urN -X dontdiff linux-vanilla/drivers/usb/Makefile linux/drivers/usb/Makefile
--- linux-vanilla/drivers/usb/Makefile	Tue Feb 19 12:01:31 2002
+++ linux/drivers/usb/Makefile	Fri Nov  9 11:35:22 2001
@@ -36,6 +36,7 @@
 obj-$(CONFIG_USB_UHCI)		+= usb-uhci.o
 obj-$(CONFIG_USB_UHCI_ALT)	+= uhci.o
 obj-$(CONFIG_USB_OHCI)		+= usb-ohci.o
+obj-$(CONFIG_USB_SL811HS)	+= hc_sl811.o
 
 obj-$(CONFIG_USB_MOUSE)		+= usbmouse.o
 obj-$(CONFIG_USB_HID)		+= hid.o
diff -urN -X dontdiff linux-vanilla/drivers/usb/hc_simple.c linux/drivers/usb/hc_simple.c
--- linux-vanilla/drivers/usb/hc_simple.c	Wed Dec 31 17:00:00 1969
+++ linux/drivers/usb/hc_simple.c	Fri Feb 15 11:25:37 2002
@@ -0,0 +1,1176 @@
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*
+ * simple generic USB HCD frontend Version 0.9.5 (10/28/2001)
+ * for embedded HCs (SL811HS)
+ * 
+ * USB URB handling, hci_ hcs_
+ * URB queueing, qu_
+ * Transfer scheduling, sh_
+ * 
+ *
+ *-------------------------------------------------------------------------*
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *-------------------------------------------------------------------------*/
+
+/* main lock for urb access */
+static spinlock_t usb_urb_lock = SPIN_LOCK_UNLOCKED; 
+
+/*-------------------------------------------------------------------------*/ 
+/*-------------------------------------------------------------------------*/ 
+/* URB HCD API function layer
+ * * * */
+
+/***************************************************************************
+ * Function Name : hcs_urb_queue
+ *
+ * This function initializes the urb status and length before queueing the 
+ * urb. 
+ *
+ * Input:  hci = data structure for the host controller
+ *         urb = USB request block data structure 
+ *
+ * Return: 0 
+ **************************************************************************/
+
+static inline int hcs_urb_queue (hci_t * hci, urb_t * urb)
+{
+    int i;
+
+    DBGFUNC ("enter hcs_urb_queue\n");
+    if (usb_pipeisoc (urb->pipe)) 
+    {
+        DBGVERBOSE ("hcs_urb_queue: isoc pipe\n");
+	for (i = 0; i < urb->number_of_packets; i++) 
+        {
+  	    urb->iso_frame_desc[i].actual_length = 0;
+  	    urb->iso_frame_desc[i].status = -EXDEV;
+  	}
+  	
+        /* urb->next hack : 1 .. resub, 0 .. single shot */
+  	urb->interval = urb->next ? 1 : 0;
+    }	
+
+    urb->status = USB_ST_URB_PENDING;
+    urb->actual_length = 0;
+    urb->error_count = 0;
+
+    if (usb_pipecontrol (urb->pipe))
+	hc_flush_data_cache (hci, urb->setup_packet, 8);
+    if (usb_pipeout (urb->pipe))	
+ 	hc_flush_data_cache (hci, urb->transfer_buffer, 
+                             urb->transfer_buffer_length);
+	
+    qu_queue_urb (hci, urb);
+
+    return 0;
+}
+
+/***************************************************************************
+ * Function Name : hcs_return_urb
+ *
+ * This function the return path of URB back to the USB core. It calls the
+ * the urb complete function if exist, and also handles the resubmition of
+ * interrupt URBs.
+ *
+ * Input:  hci = data structure for the host controller
+ *         urb = USB request block data structure 
+ *         resub_ok = resubmit flag: 1 = submit urb again, 0 = not submit 
+ *
+ * Return: 0 
+ **************************************************************************/
+
+static int hcs_return_urb (hci_t * hci, urb_t * urb, int resub_ok)
+{	
+    struct usb_device * dev = urb->dev;
+    int resubmit = 0;
+
+        	
+    DBGFUNC ("enter hcs_return_urb, urb pointer = 0x%x, "
+             "transferbuffer point = 0x%x, next pointer = 0x%x,"
+             " setup packet pointer = 0x%x, context pointer = 0x%x \n", 
+             (__u32 *) urb, (__u32 *) urb->transfer_buffer, 
+             (__u32 *) urb->next, (__u32 *) urb->setup_packet, 
+             (__u32 *) urb->context);
+    if (urb_debug)
+	urb_print (urb, "RET", usb_pipeout (urb->pipe));
+	
+    resubmit = urb->interval && resub_ok;
+ 	
+    urb->dev = urb->hcpriv = NULL;
+
+    if (urb->complete) 
+    {
+	urb->complete (urb); /* call complete */
+    }
+	
+    if (resubmit) 
+    { 
+        /* requeue the URB */
+	urb->dev = dev;		
+	hcs_urb_queue (hci, urb);
+    }
+
+    return 0;
+}
+
+/***************************************************************************
+ * Function Name : hci_submit_urb
+ *
+ * This function is called by the USB core API when an URB is available to
+ * process.  This function does the following
+ *
+ * 1) Check the validity of the URB
+ * 2) Parse the device number from the URB
+ * 3) Pass the URB to the root hub routine if its intended for the hub, else
+ *    queue the urb for the attached device. 
+ *
+ * Input: urb = USB request block data structure 
+ *
+ * Return: 0 if success or error code 
+ **************************************************************************/
+
+static int hci_submit_urb (urb_t * urb)
+{
+    hci_t * hci;
+    unsigned int pipe = urb->pipe;
+    unsigned long flags;
+    int ret;
+
+    DBGFUNC ("enter hci_submit_urb, pipe = 0x%x\n", urb->pipe);	
+    if (!urb->dev || !urb->dev->bus || urb->hcpriv) 
+        return -EINVAL;
+
+    if (usb_endpoint_halted (urb->dev, usb_pipeendpoint (pipe), 
+        usb_pipeout (pipe))) 
+    {
+	printk ("hci_submit_urb: endpoint_halted\n");
+	return -EPIPE;
+    }
+    hci = (hci_t *) urb->dev->bus->hcpriv;
+	
+    /* a request to the virtual root hub */
+ 
+    if (usb_pipedevice (pipe) == hci->rh.devnum) 
+    {
+        if (urb_debug > 1)
+	    urb_print (urb, "SUB-RH", usb_pipein (pipe));
+
+	return rh_submit_urb (urb);	
+    }
+
+    /* queue the URB to its endpoint-queue */
+	 
+    spin_lock_irqsave (&usb_urb_lock, flags);	
+    ret = hcs_urb_queue (hci, urb);
+    if (ret !=0)
+    {
+       	/* error on return */
+	DBGERR ("hci_submit_urb: return err, ret = 0x%x, urb->status = 0x%x\n",
+                 ret, urb->status);
+    }
+	
+    spin_unlock_irqrestore (&usb_urb_lock, flags);
+
+    return ret;
+
+}
+
+/***************************************************************************
+ * Function Name : hci_unlink_urb
+ *
+ * This function mark the URB to unlink
+ *
+ * Input: urb = USB request block data structure 
+ *
+ * Return: 0 if success or error code 
+ **************************************************************************/
+
+static int hci_unlink_urb (urb_t * urb)
+{
+    unsigned long flags;
+    hci_t * hci;
+    DECLARE_WAITQUEUE (wait, current);
+    void * comp = NULL;
+	
+    DBGFUNC ("enter hci_unlink_urb\n");
+
+    if (!urb) /* just to be sure */ 
+	return -EINVAL;
+		
+    if (!urb->dev || !urb->dev->bus)
+ 	return -ENODEV;
+
+    hci = (hci_t *) urb->dev->bus->hcpriv; 
+
+    /* a request to the virtual root hub */
+    if (usb_pipedevice (urb->pipe) == hci->rh.devnum) 
+    {
+	return rh_unlink_urb (urb); 
+    }
+
+    if (urb_debug)
+	urb_print (urb, "UNLINK", 1);
+		
+    spin_lock_irqsave (&usb_urb_lock, flags);
+
+    if (!list_empty (&urb->urb_list) && urb->status == USB_ST_URB_PENDING) 
+    { 
+        /* URB active? */
+	
+	if (urb->transfer_flags & (USB_ASYNC_UNLINK | USB_TIMEOUT_KILLED)) 
+        { 
+	    /* asynchron with callback */
+		
+	    list_del (&urb->urb_list); /* relink the urb to the del list */
+	    list_add (&urb->urb_list, &hci->del_list);
+	    spin_unlock_irqrestore (&usb_urb_lock, flags);
+
+	} 
+        else 
+        { 
+            /* synchron without callback */
+
+	    add_wait_queue (&hci->waitq, &wait);	  
+
+	    set_current_state (TASK_UNINTERRUPTIBLE);
+	    comp = urb->complete;
+	    urb->complete = NULL;
+	
+	    list_del (&urb->urb_list); /* relink the urb to the del list */
+	    list_add (&urb->urb_list, &hci->del_list);
+
+	    spin_unlock_irqrestore (&usb_urb_lock, flags);
+			
+	    schedule_timeout(HZ/50);
+
+	    if (!list_empty (&urb->urb_list))
+		list_del (&urb->urb_list);
+	
+	    urb->complete = comp;
+	    urb->hcpriv = NULL;
+	    remove_wait_queue (&hci->waitq, &wait); 
+	}
+    } 
+    else 
+    { 
+        /* hcd does not own URB but we keep the driver happy anyway */
+	spin_unlock_irqrestore (&usb_urb_lock, flags);
+		
+	if (urb->complete && (urb->transfer_flags & USB_ASYNC_UNLINK)) 
+        {	
+	    urb->status = -ENOENT;
+	    urb->actual_length = 0;		
+	    urb->complete (urb); 
+	    urb->status = 0;	
+	}
+        else 
+        {
+	    urb->status = -ENOENT;
+	}	
+    }	
+
+    return 0;
+}
+
+/***************************************************************************
+ * Function Name : hci_alloc_dev
+ *
+ * This function allocates private data space for the usb device and 
+ * initialize the endpoint descriptor heads.
+ *
+ * Input: usb_dev = pointer to the usb device 
+ *
+ * Return: 0 if success or error code 
+ **************************************************************************/
+
+static int hci_alloc_dev (struct usb_device * usb_dev)
+{
+    struct hci_device * dev;
+    int i;
+    
+    DBGFUNC ("enter hci_alloc_dev\n");
+    dev = kmalloc (sizeof (*dev), GFP_KERNEL);
+    if (!dev)
+	return -ENOMEM;
+		
+    memset (dev, 0, sizeof (*dev));
+
+    for (i = 0; i < 32; i++) 
+    {
+        INIT_LIST_HEAD (&(dev->ed [i].urb_queue));
+	dev->ed [i].pipe_head = NULL;
+    }
+		
+    usb_dev->hcpriv = dev;
+	
+    DBGVERBOSE ("USB HC dev alloc %d bytes\n", sizeof (*dev));
+		
+    return 0;
+
+}
+
+/***************************************************************************
+ * Function Name : hci_free_dev
+ *
+ * This function de-allocates private data space for the usb devic
+ *
+ * Input: usb_dev = pointer to the usb device 
+ *
+ * Return: 0  
+ **************************************************************************/
+
+static int hci_free_dev (struct usb_device * usb_dev)
+{
+    DBGFUNC ("enter hci_free_dev\n");
+		
+    if (usb_dev->hcpriv)
+	kfree (usb_dev->hcpriv);
+
+    usb_dev->hcpriv = NULL;
+
+    return 0;
+}
+
+/***************************************************************************
+ * Function Name : hci_get_current_frame_number
+ *
+ * This function get the current USB frame number
+ *
+ * Input: usb_dev = pointer to the usb device 
+ *
+ * Return: frame number  
+ **************************************************************************/
+
+static int hci_get_current_frame_number (struct usb_device *usb_dev) 
+{
+    hci_t * hci = usb_dev->bus->hcpriv;
+    DBGFUNC ("enter hci_get_current_frame_number, frame = 0x%x \r\n", 
+              hci->frame_number);	
+
+    return (hci->frame_number);
+}
+
+/***************************************************************************
+ * List of all io-functions 
+ **************************************************************************/
+ 
+static struct usb_operations hci_device_operations = {
+	hci_alloc_dev,
+	hci_free_dev,
+	hci_get_current_frame_number,
+	hci_submit_urb,
+	hci_unlink_urb
+};
+
+/***************************************************************************
+ * URB queueing:
+ * 
+ * For each type of transfer (INTR, BULK, ISO, CTRL) there is a list of 
+ * active URBs.
+ * (hci->intr_list, hci->bulk_list, hci->iso_list, hci->ctrl_list)
+ * For every endpoint the head URB of the queued URBs is linked to one of 
+ * those lists.
+ * 
+ * The rest of the queued URBs of an endpoint are linked into a 
+ * private URB list for each endpoint. (hci_dev->ed [endpoint_io].urb_queue)
+ * hci_dev->ed [endpoint_io].pipe_head .. points to the head URB which is 
+ * in one of the active URB lists.
+ * 
+ * The index of an endpoint consists of its number and its direction.
+ * 
+ * The state of an intr and iso URB is 0. 
+ * For ctrl URBs the states are US_CTRL_SETUP, US_CTRL_DATA, US_CTRL_ACK
+ * Bulk URBs states are US_BULK and US_BULK0 (with 0-len packet)
+ * 
+ **************************************************************************/
+
+/***************************************************************************
+ * Function Name : qu_urb_timeout
+ *
+ * This function is called when the URB timeout. The function unlinks the