include/mvmfp.h

   1 /*
   2  * (C) Copyright 2010
   3  * Marvell Semiconductor <www.marvell.com>
   4  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
   5  *
   6  * See file CREDITS for list of people who contributed to this
   7  * project.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of
  12  * the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  22  * MA 02110-1301 USA
  23  */
  24
  25 #ifndef __MVMFP_H
  26 #define __MVMFP_H
  27
  28 /*
  29  * Header file for MultiFunctionPin (MFP) Configururation framework
  30  *
  31  * Processors Supported:
  32  * 1. Marvell ARMADA100 Processors
  33  *
  34  * processor to be supported should be added here
  35  */
  36
  37 /*
  38  * MFP configuration is represented by a 32-bit unsigned integer
  39  */
  40 #define MFP(_off, _pull, _pF, _drv, _dF, _edge, _eF, _afn, _aF) ( \
  41         /* bits 31..16 - MFP Register Offset */ (((_off) & 0xffff) << 16) | \
  42         /* bits 15..13 - Run Mode Pull State */ (((_pull) & 0x7) << 13) | \
  43         /* bit  12     - Unused */ \
  44         /* bits 11..10 - Driver Strength */     (((_drv) & 0x3) << 10) | \
  45         /* bit  09     - Pull State flag */     (((_pF) & 0x1) << 9) | \
  46         /* bit  08     - Drv-strength flag */   (((_dF) & 0x1) << 8) | \
  47         /* bit  07     - Edge-det flag */       (((_eF) & 0x1) << 7) | \
  48         /* bits 06..04 - Edge Detection */      (((_edge) & 0x7) << 4) | \
  49         /* bits 03..00 - Alt-fun flag */        (((_aF) & 0x1) << 3) | \
  50         /* bits Alternate-fun select */         ((_afn) & 0x7))
  51
  52 /*
  53  * to facilitate the definition, the following macros are provided
  54  *
  55  *                                  offset, pull,pF, drv,dF, edge,eF ,afn,aF
  56  */
  57 #define MFP_OFFSET_MASK         MFP(0xffff,    0,0,    0,0,     0,0,   0,0)
  58 #define MFP_REG(x)              MFP(x,         0,0,    0,0,     0,0,   0,0)
  59 #define MFP_REG_GET_OFFSET(x)   ((x & MFP_OFFSET_MASK) >> 16)
  60
  61 #define MFP_AF_FLAG             MFP(0x0000,    0,0,    0,0,     0,0,   0,1)
  62 #define MFP_DRIVE_FLAG          MFP(0x0000,    0,0,    0,1,     0,0,   0,0)
  63 #define MFP_EDGE_FLAG           MFP(0x0000,    0,0,    0,0,     0,1,   0,0)
  64 #define MFP_PULL_FLAG           MFP(0x0000,    0,1,    0,0,     0,0,   0,0)
  65
  66 #define MFP_AF0                 MFP(0x0000,    0,0,    0,0,     0,0,   0,1)
  67 #define MFP_AF1                 MFP(0x0000,    0,0,    0,0,     0,0,   1,1)
  68 #define MFP_AF2                 MFP(0x0000,    0,0,    0,0,     0,0,   2,1)
  69 #define MFP_AF3                 MFP(0x0000,    0,0,    0,0,     0,0,   3,1)
  70 #define MFP_AF4                 MFP(0x0000,    0,0,    0,0,     0,0,   4,1)
  71 #define MFP_AF5                 MFP(0x0000,    0,0,    0,0,     0,0,   5,1)
  72 #define MFP_AF6                 MFP(0x0000,    0,0,    0,0,     0,0,   6,1)
  73 #define MFP_AF7                 MFP(0x0000,    0,0,    0,0,     0,0,   7,1)
  74 #define MFP_AF_MASK             MFP(0x0000,    0,0,    0,0,     0,0,   7,0)
  75
  76 #define MFP_LPM_EDGE_NONE       MFP(0x0000,    0,0,    0,0,     0,1,   0,0)
  77 #define MFP_LPM_EDGE_RISE       MFP(0x0000,    0,0,    0,0,     1,1,   0,0)
  78 #define MFP_LPM_EDGE_FALL       MFP(0x0000,    0,0,    0,0,     2,1,   0,0)
  79 #define MFP_LPM_EDGE_BOTH       MFP(0x0000,    0,0,    0,0,     3,1,   0,0)
  80 #define MFP_LPM_EDGE_MASK       MFP(0x0000,    0,0,    0,0,     3,0,   0,0)
  81
  82 #define MFP_DRIVE_VERY_SLOW     MFP(0x0000,    0,0,    0,1,     0,0,   0,0)
  83 #define MFP_DRIVE_SLOW          MFP(0x0000,    0,0,    1,1,     0,0,   0,0)
  84 #define MFP_DRIVE_MEDIUM        MFP(0x0000,    0,0,    2,1,     0,0,   0,0)
  85 #define MFP_DRIVE_FAST          MFP(0x0000,    0,0,    3,1,     0,0,   0,0)
  86 #define MFP_DRIVE_MASK          MFP(0x0000,    0,0,    3,0,     0,0,   0,0)
  87
  88 #define MFP_PULL_NONE           MFP(0x0000,    0,1,    0,0,     0,0,   0,0)
  89 #define MFP_PULL_LOW            MFP(0x0000,    1,1,    0,0,     0,0,   0,0)
  90 #define MFP_PULL_HIGH           MFP(0x0000,    2,1,    0,0,     0,0,   0,0)
  91 #define MFP_PULL_BOTH           MFP(0x0000,    3,1,    0,0,     0,0,   0,0)
  92 #define MFP_PULL_FLOAT          MFP(0x0000,    4,1,    0,0,     0,0,   0,0)
  93 #define MFP_PULL_MASK           MFP(0x0000,    7,0,    0,0,     0,0,   0,0)
  94
  95 #define MFP_EOC                 0xffffffff      /* indicates end-of-conf */
  96
  97 /* Functions */
  98 void mfp_config(u32 *mfp_cfgs);
  99
 100 #endif /* __MVMFP_H */