usb: musb: allow board to pass down fifo mode

boards might want to optimize their fifo configuration
to the particular needs of that specific board. Allow
that by moving all related data structures to
<linux/usb/musb.h>

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

1 files changed, 35 insertions, 0 deletions

diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h
index 7acef0234c0e..f3d68f62dae8 100644
--- a/include/linux/usb/musb.h
+++ b/include/linux/usb/musb.h
@@ -22,12 +22,47 @@ enum musb_mode {
 
 struct clk;
 
+enum musb_fifo_style {
+        FIFO_RXTX,
+        FIFO_TX,
+        FIFO_RX
+} __attribute__ ((packed));
+
+enum musb_buf_mode {
+        BUF_SINGLE,
+        BUF_DOUBLE
+} __attribute__ ((packed));
+
+struct musb_fifo_cfg {
+        u8                      hw_ep_num;
+        enum musb_fifo_style    style;
+        enum musb_buf_mode      mode;
+        u16                     maxpacket;
+};
+
+#define MUSB_EP_FIFO(ep, st, m, pkt)            \
+{                                               \
+        .hw_ep_num      = ep,                   \
+        .style          = st,                   \
+        .mode           = m,                    \
+        .maxpacket      = pkt,                  \
+}
+
+#define MUSB_EP_FIFO_SINGLE(ep, st, pkt)        \
+        MUSB_EP_FIFO(ep, st, BUF_SINGLE, pkt)
+
+#define MUSB_EP_FIFO_DOUBLE(ep, st, pkt)        \
+        MUSB_EP_FIFO(ep, st, BUF_DOUBLE, pkt)
+
 struct musb_hdrc_eps_bits {
         const char      name[16];
         u8              bits;
 };
 
 struct musb_hdrc_config {
+        struct musb_fifo_cfg    *fifo_cfg;      /* board fifo configuration */
+        unsigned                fifo_cfg_size;  /* size of the fifo configuration */
+
         /* MUSB configuration-specific details */
         unsigned        multipoint:1;   /* multipoint device */
         unsigned        dyn_fifo:1 __deprecated; /* supports dynamic fifo sizing */