USB: musb: add Blackfin specific configuration to MUSB

Some config registers are not avaiable in Blackfin, we have to comment them out.

v1-v2:
 - remove Blackfin specific header file
 - add Blackfin register version to musb_regs.h header file

Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 67 insertions, 3 deletions

diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index d45d258e63f0..630946a2d9fc 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -191,7 +191,7 @@ enum musb_g_ep0_state {
  */
 
 #if defined(CONFIG_ARCH_DAVINCI) || defined(CONFIG_ARCH_OMAP2430) \
-                || defined(CONFIG_ARCH_OMAP3430)
+                || defined(CONFIG_ARCH_OMAP3430) || defined(CONFIG_BLACKFIN)
 /* REVISIT indexed access seemed to
  * misbehave (on DaVinci) for at least peripheral IN ...
  */
@@ -448,6 +448,70 @@ static inline struct musb *gadget_to_musb(struct usb_gadget *g)
 }
 #endif
 
+#ifdef CONFIG_BLACKFIN
+static inline int musb_read_fifosize(struct musb *musb,
+                struct musb_hw_ep *hw_ep, u8 epnum)
+{
+        musb->nr_endpoints++;
+        musb->epmask |= (1 << epnum);
+
+        if (epnum < 5) {
+                hw_ep->max_packet_sz_tx = 128;
+                hw_ep->max_packet_sz_rx = 128;
+        } else {
+                hw_ep->max_packet_sz_tx = 1024;
+                hw_ep->max_packet_sz_rx = 1024;
+        }
+        hw_ep->is_shared_fifo = false;
+
+        return 0;
+}
+
+static inline void musb_configure_ep0(struct musb *musb)
+{
+        musb->endpoints[0].max_packet_sz_tx = MUSB_EP0_FIFOSIZE;
+        musb->endpoints[0].max_packet_sz_rx = MUSB_EP0_FIFOSIZE;
+        musb->endpoints[0].is_shared_fifo = true;
+}
+
+#else
+
+static inline int musb_read_fifosize(struct musb *musb,
+                struct musb_hw_ep *hw_ep, u8 epnum)
+{
+        u8 reg = 0;
+
+        /* read from core using indexed model */
+        reg = musb_readb(hw_ep->regs, 0x10 + MUSB_FIFOSIZE);
+        /* 0's returned when no more endpoints */
+        if (!reg)
+                return -ENODEV;
+
+        musb->nr_endpoints++;
+        musb->epmask |= (1 << epnum);
+
+        hw_ep->max_packet_sz_tx = 1 << (reg & 0x0f);
+
+        /* shared TX/RX FIFO? */
+        if ((reg & 0xf0) == 0xf0) {
+                hw_ep->max_packet_sz_rx = hw_ep->max_packet_sz_tx;
+                hw_ep->is_shared_fifo = true;
+                return 0;
+        } else {
+                hw_ep->max_packet_sz_rx = 1 << ((reg & 0xf0) >> 4);
+                hw_ep->is_shared_fifo = false;
+        }
+
+        return 0;
+}
+
+static inline void musb_configure_ep0(struct musb *musb)
+{
+        musb->endpoints[0].max_packet_sz_tx = MUSB_EP0_FIFOSIZE;
+        musb->endpoints[0].max_packet_sz_rx = MUSB_EP0_FIFOSIZE;
+}
+#endif /* CONFIG_BLACKFIN */
+
 
 /***************************** Glue it together *****************************/
 
@@ -470,14 +534,14 @@ extern void musb_hnp_stop(struct musb *musb);
 
 extern int musb_platform_set_mode(struct musb *musb, u8 musb_mode);
 
-#if defined(CONFIG_USB_TUSB6010) || \
+#if defined(CONFIG_USB_TUSB6010) || defined(CONFIG_BLACKFIN) || \
         defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP34XX)
 extern void musb_platform_try_idle(struct musb *musb, unsigned long timeout);
 #else
 #define musb_platform_try_idle(x, y)            do {} while (0)
 #endif
 
-#ifdef CONFIG_USB_TUSB6010
+#if defined(CONFIG_USB_TUSB6010) || defined(CONFIG_BLACKFIN)
 extern int musb_platform_get_vbus_status(struct musb *musb);
 #else
 #define musb_platform_get_vbus_status(x)        0