r8a66597-hcd: fix cannot use external hub

Fix the problem that cannot use external hub, because this driver did not control correctly a DEVADDx register.

Signed-off-by Yoshihiro Shimoda <[email protected]>

---
 drivers/usb/r8a66597-hcd.c |   36 +++++++++++++++++++++++++++++++-----
 1 files changed, 31 insertions(+), 5 deletions(-)

drivers/usb/r8a66597-hcd.c +31 -6

index 0d3931e..5007051 100644
@@ -36,12 +36,37 @@ static unsigned short vif = CONFIG_R8A66597_LDRV;
 static unsigned short endian = CONFIG_R8A66597_ENDIAN;
 static struct r8a66597 gr8a66597;
 
-static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
-                          u16 usbspd, u8 upphub, u8 hubport, int port)
+static void get_hub_data(struct usb_device *dev, u16 *hub_devnum, u16 *hubport)
 {
-       u16 val;
+       int i;
+
+       *hub_devnum = 0;
+       *hubport = 0;
+
+       /* check a device connected to root_hub */
+       if ((dev->parent && dev->parent->devnum == 1) ||
+           (dev->devnum == 1))
+               return;
+
+       for (i = 0; i < USB_MAXCHILDREN; i++) {
+               if (dev->parent->children[i] == dev) {
+                       *hub_devnum = (u8)dev->parent->devnum;
+                       *hubport = i;
+                       return;
+               }
+       }
+
+       printf("get_hub_data error.\n");
+}
+
+static void set_devadd(struct r8a66597 *r8a66597, u8 r8a66597_address,
+                       struct usb_device *dev, int port)
+{
+       u16 val, usbspd, upphub, hubport;
       unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
 
+       get_hub_data(dev, &upphub, &hubport);
+       usbspd = r8a66597->speed;
       val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
       r8a66597_write(r8a66597, val, devadd_reg);
 }

@@ -818,7 +843,7 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
       R8A66597_DPRINT("pipe = %08x, buffer = %p, len = %d, devnum = %d\n",
                       pipe, buffer, transfer_len, dev->devnum);
 
-       set_devadd_reg(r8a66597, dev->devnum, r8a66597->speed, 0, 0, 0);
+       set_devadd(r8a66597, dev->devnum, dev, 0);
 
       pipe_buffer_setting(r8a66597, dev, pipe);
 

@@ -854,13 +879,14 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe,
                                               setup);
 
       R8A66597_DPRINT("%s: setup\n", __func__);
-       set_devadd_reg(r8a66597, r8a66597_address, r8a66597->speed, 0, 0, 0);
+       set_devadd(r8a66597, r8a66597_address, dev, 0);
 
       if (send_setup_packet(r8a66597, dev, setup) < 0) {
               printf("setup packet send error\n");
               return -1;
       }
 
+       dev->act_len = 0;
       if (usb_pipein(pipe))
               if (receive_control_packet(r8a66597, dev, buffer,
                                               transfer_len) < 0)
--

1.5.5

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