usb: renesas_usbhs: add pipe/fifo link

renesas_usbhs has CFIFO which is for PIO transfer,
and D0FIFO/D1FIFO which are for DMA transfer.
The pipe selects one of these fifo when it send/recv data.
But fifo must not be selected to different pipe in same time.
This patch add pipe/fifo link for each other,
and fifo is not selected by another pipe until it is unselected.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/usb/renesas_usbhs/pipe.h b/drivers/usb/renesas_usbhs/pipe.h
index 20e3cf46f70c..484adbed6dfb 100644
--- a/drivers/usb/renesas_usbhs/pipe.h
+++ b/drivers/usb/renesas_usbhs/pipe.h
@@ -27,6 +27,7 @@ struct usbhs_pipe {
         u32 pipe_type;  /* USB_ENDPOINT_XFER_xxx */
 
         struct usbhs_priv *priv;
+        struct usbhs_fifo *fifo;
         struct list_head list;
 
         u32 flags;
@@ -88,10 +89,13 @@ int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe);
 void usbhs_pipe_enable(struct usbhs_pipe *pipe);
 void usbhs_pipe_disable(struct usbhs_pipe *pipe);
 void usbhs_pipe_stall(struct usbhs_pipe *pipe);
+void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo);
 
 #define usbhs_pipe_to_priv(p)   ((p)->priv)
 #define usbhs_pipe_number(p)    (int)((p) - (p)->priv->pipe_info.pipe)
 #define usbhs_pipe_is_dcp(p)    ((p)->priv->pipe_info.pipe == (p))
+#define usbhs_pipe_to_fifo(p)   ((p)->fifo)
+#define usbhs_pipe_is_busy(p)   usbhs_pipe_to_fifo(p)
 
 /*
  * dcp control