release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/usb/musb/blackfin.h

   1 /*
   2  * Copyright (C) 2007 by Analog Devices, Inc.
   3  *
   4  * The Inventra Controller Driver for Linux is free software; you
   5  * can redistribute it and/or modify it under the terms of the GNU
   6  * General Public License version 2 as published by the Free Software
   7  * Foundation.
   8  */
   9
  10 #ifndef __MUSB_BLACKFIN_H__
  11 #define __MUSB_BLACKFIN_H__
  12
  13 /*
  14  * Blackfin specific definitions
  15  */
  16
  17
  18 /* The Mentor USB DMA engine on BF52x (silicon v0.0 and v0.1) seems to be
  19  * unstable in host mode.  This may be caused by Anomaly 05000380.  After
  20  * digging out the root cause, we will change this number accordingly.
  21  * So, need to either use silicon v0.2+ or disable DMA mode in MUSB.
  22  */
  23 #if ANOMALY_05000380 && defined(CONFIG_BF52x) && defined(CONFIG_USB_MUSB_HDRC) && \
  24         !defined(CONFIG_MUSB_PIO_ONLY)
  25 # error "Please use PIO mode in MUSB driver on bf52x chip v0.0 and v0.1"
  26 #endif
  27
  28 #undef DUMP_FIFO_DATA
  29 #ifdef DUMP_FIFO_DATA
  30 static void dump_fifo_data(u8 *buf, u16 len)
  31 {
  32         u8 *tmp = buf;
  33         int i;
  34
  35         for (i = 0; i < len; i++) {
  36                 if (!(i % 16) && i)
  37                         pr_debug("\n");
  38                 pr_debug("%02x ", *tmp++);
  39         }
  40         pr_debug("\n");
  41 }
  42 #else
  43 #define dump_fifo_data(buf, len)        do {} while (0)
  44 #endif
  45
  46
  47 #define USB_DMA_BASE            USB_DMA_INTERRUPT
  48 #define USB_DMAx_CTRL           0x04
  49 #define USB_DMAx_ADDR_LOW       0x08
  50 #define USB_DMAx_ADDR_HIGH      0x0C
  51 #define USB_DMAx_COUNT_LOW      0x10
  52 #define USB_DMAx_COUNT_HIGH     0x14
  53
  54 #define USB_DMA_REG(ep, reg)    (USB_DMA_BASE + 0x20 * ep + reg)
  55
  56 /* Almost 1 second */
  57 #define TIMER_DELAY     (1 * HZ)
  58
  59 static struct timer_list musb_conn_timer;
  60
  61 #endif  /* __MUSB_BLACKFIN_H__ */