make it possible to share the USB and parallel cable between applications
authorMichael Gernoth <michael@gernoth.net>
Thu, 10 Apr 2008 20:10:15 +0000 (22:10 +0200)
committerMichael Gernoth <michael@gernoth.net>
Thu, 10 Apr 2008 20:10:15 +0000 (22:10 +0200)
parport.c
usb-driver.c

index 57ab08355593964f4b15ed5f869dd1a9ec9f8cc5..b32b6e26f7947a0629d9ecc3caa90ee3eba24a00 100644 (file)
--- a/parport.c
+++ b/parport.c
@@ -20,6 +20,12 @@ int parport_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase,
        unsigned char val;
        static unsigned char last_pp_write = 0;
 
+       if (parportfd < 0)
+               return ret;
+
+       if (ioctl(parportfd, PPCLAIM) == -1)
+               return -1;
+
        for (i = 0; i < num; i++) {
                DPRINTF("dwPort: 0x%lx, cmdTrans: %lu, dwbytes: %ld, fautoinc: %ld, dwoptions: %ld\n",
                                (unsigned long)tr[i].dwPort, tr[i].cmdTrans, tr[i].dwBytes,
@@ -33,9 +39,6 @@ int parport_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase,
                        DPRINTF("write byte: %d\n", val);
 #endif
 
-               if (parportfd < 0)
-                       return ret;
-
                if (port == ppbase + PP_DATA) {
                        DPRINTF("data port\n");
                        switch(tr[i].cmdTrans) {
@@ -114,6 +117,8 @@ int parport_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase,
 #endif
        }
 
+       ioctl(parportfd, PPRELEASE);
+
        return ret;
 }
 
@@ -139,6 +144,7 @@ int parport_open(int num) {
                if (ioctl(parportfd, PPNEGOT, &pmode) == -1)
                        return -1;
 
+               ioctl(parportfd, PPRELEASE);
 #if 0
                if (cr->Card.dwItems > 1 && cr->Card.Item[1].I.IO.dwAddr) {
                        DPRINTF("ECP mode requested\n");
index 6320b9f74fe4bee537b735ca49700dcb317797e0..a0524bf67d521ed5cc84a0aa5cf0f10267768936 100644 (file)
@@ -57,6 +57,7 @@ static struct usb_bus *busses = NULL;
 static struct usb_device *usbdevice;
 static usb_dev_handle *usb_devhandle = NULL;
 static int usbinterface = -1;
+static int usbalternate = -1;
 static unsigned long card_type;
 static int ints_enabled = 0;
 static pthread_mutex_t int_wait = PTHREAD_MUTEX_INITIALIZER;
@@ -234,6 +235,39 @@ static int usb_deviceinfo(unsigned char *buf) {
        return len;
 }
 
+static int usb_claim(int claim) {
+       int ret = 0;
+       static int claimed = 0;
+
+       if (usbinterface < 0)
+               return -1;
+       
+       if (claim) {
+               if (claimed)
+                       return 0;
+
+               ret = usb_claim_interface(usb_devhandle, usbinterface);
+               if (!ret) {
+                       claimed = 1;
+                       ret = usb_set_altinterface(usb_devhandle, usbalternate);
+                       if (ret)
+                               fprintf(stderr, "usb_set_altinterface: %d\n", ret);
+               } else {
+                       fprintf(stderr, "usb_claim_interface: %d -> %d (%s)\n",
+                                       usbinterface, ret, usb_strerror());
+               }
+       } else {
+               if (!claimed)
+                       return 0;
+
+               ret = usb_release_interface(usb_devhandle, usbinterface);
+               if (!ret)
+                       claimed = 0;
+       }
+
+       return ret;
+}
+
 static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
        struct header_struct* wdheader = (struct header_struct*)wdioctl;
        struct version_struct *version;
@@ -307,8 +341,10 @@ static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
                                DPRINTF(" unique: %lu, pipe: %lu, read: %lu, options: %lx, size: %lu, timeout: %lx\n",
                                ut->dwUniqueID, ut->dwPipeNum, ut->fRead,
                                ut->dwOptions, ut->dwBufferSize, ut->dwTimeout);
-                               DPRINTF("setup packet: ");
-                               hexdump(ut->SetupPacket, 8);
+                               if (ut->dwPipeNum == 0) {
+                                       DPRINTF("setup packet: ");
+                                       hexdump(ut->SetupPacket, 8);
+                               }
 
                                if (!ut->fRead && ut->dwBufferSize)
                                {
@@ -319,6 +355,7 @@ static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
 #ifndef NO_WINDRVR
                                ret = (*ioctl_func) (fd, request, wdioctl);
 #else
+                               usb_claim(1);
                                /* http://www.jungo.com/support/documentation/windriver/802/wdusb_man_mhtml/node55.html#SECTION001213000000000000000 */
                                if (ut->dwPipeNum == 0) { /* control pipe */
                                        int requesttype, request, value, index, size;
@@ -332,10 +369,10 @@ static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
                                } else {
                                        if (ut->fRead) {
                                                ret = usb_bulk_read(usb_devhandle, ut->dwPipeNum, ut->pBuffer, ut->dwBufferSize, ut->dwTimeout);
-
                                        } else {
                                                ret = usb_bulk_write(usb_devhandle, ut->dwPipeNum, ut->pBuffer, ut->dwBufferSize, ut->dwTimeout);
                                        }
+                                       usb_claim(0);
                                }
 
                                if (ret < 0) {
@@ -416,22 +453,8 @@ static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
                                        if (!usb_devhandle)
                                                usb_devhandle = usb_open(usbdevice);
 
-                                       /* FIXME: Select right interface! */
-                                       ret = usb_claim_interface(usb_devhandle, usbdevice->config[0].interface[usi->dwInterfaceNum].altsetting[usi->dwAlternateSetting].bInterfaceNumber);
-                                       if (!ret) {
-                                               if(!ret) {
-                                                       usbinterface = usbdevice->config[0].interface[usi->dwInterfaceNum].altsetting[usi->dwAlternateSetting].bInterfaceNumber;
-                                                       ret = usb_set_altinterface(usb_devhandle, usi->dwAlternateSetting);
-                                                       if (ret)
-                                                               fprintf(stderr, "usb_set_altinterface: %d\n", ret);
-                                               } else {
-                                                       fprintf(stderr, "usb_set_configuration: %d (%s)\n", ret, usb_strerror());
-                                               }
-                                       } else {
-                                               fprintf(stderr, "usb_claim_interface: %d -> %d (%s)\n",
-                                               usbdevice->config[0].interface[usi->dwInterfaceNum].altsetting[usi->dwAlternateSetting].bInterfaceNumber,
-                                               ret, usb_strerror());
-                                       }
+                                       usbinterface = usbdevice->config[0].interface[usi->dwInterfaceNum].altsetting[usi->dwAlternateSetting].bInterfaceNumber;
+                                       usbalternate = usi->dwAlternateSetting;
                                }
 #endif
                                DPRINTF("unique: %lu, interfacenum: %lu, alternatesetting: %lu, options: %lx\n",
@@ -827,15 +850,9 @@ int close(int fd) {
        
        if (fd == windrvrfd && windrvrfd >= 0) {
                DPRINTF("close windrvrfd\n");
-               if (usbinterface >= 0)
-                       usb_release_interface(usb_devhandle, usbinterface);
 
-               if (usb_devhandle) {
-#ifndef NO_USB_RESET
-                       usb_reset(usb_devhandle);
-#endif
+               if (usb_devhandle)
                        usb_close(usb_devhandle);
-               }
 
                usb_devhandle = NULL;
                usbinterface = -1;
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