include/mvmfp.h

   1 /*
   2  * (C) Copyright 2010
   3  * Marvell Semiconductor <www.marvell.com>
   4  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #ifndef __MVMFP_H
  10 #define __MVMFP_H
  11
  12 /*
  13  * Header file for MultiFunctionPin (MFP) Configururation framework
  14  *
  15  * Processors Supported:
  16  * 1. Marvell ARMADA100 Processors
  17  *
  18  * processor to be supported should be added here
  19  */
  20
  21 /*
  22  * MFP configuration is represented by a 32-bit unsigned integer
  23  */
  24 #define MFP(_off, _pull, _pF, _drv, _dF, _edge, _eF, _afn, _aF) ( \
  25         /* bits 31..16 - MFP Register Offset */ (((_off) & 0xffff) << 16) | \
  26         /* bits 15..13 - Run Mode Pull State */ (((_pull) & 0x7) << 13) | \
  27         /* bit  12     - Unused */ \
  28         /* bits 11..10 - Driver Strength */     (((_drv) & 0x3) << 10) | \
  29         /* bit  09     - Pull State flag */     (((_pF) & 0x1) << 9) | \
  30         /* bit  08     - Drv-strength flag */   (((_dF) & 0x1) << 8) | \
  31         /* bit  07     - Edge-det flag */       (((_eF) & 0x1) << 7) | \
  32         /* bits 06..04 - Edge Detection */      (((_edge) & 0x7) << 4) | \
  33         /* bits 03..00 - Alt-fun flag */        (((_aF) & 0x1) << 3) | \
  34         /* bits Alternate-fun select */         ((_afn) & 0x7))
  35
  36 /*
  37  * to facilitate the definition, the following macros are provided
  38  *
  39  *                                  offset, pull,pF, drv,dF, edge,eF ,afn,aF
  40  */
  41 #define MFP_OFFSET_MASK         MFP(0xffff,    0,0,    0,0,     0,0,   0,0)
  42 #define MFP_REG(x)              MFP(x,         0,0,    0,0,     0,0,   0,0)
  43 #define MFP_REG_GET_OFFSET(x)   ((x & MFP_OFFSET_MASK) >> 16)
  44
  45 #define MFP_AF_FLAG             MFP(0x0000,    0,0,    0,0,     0,0,   0,1)
  46 #define MFP_DRIVE_FLAG          MFP(0x0000,    0,0,    0,1,     0,0,   0,0)
  47 #define MFP_EDGE_FLAG           MFP(0x0000,    0,0,    0,0,     0,1,   0,0)
  48 #define MFP_PULL_FLAG           MFP(0x0000,    0,1,    0,0,     0,0,   0,0)
  49
  50 #define MFP_AF0                 MFP(0x0000,    0,0,    0,0,     0,0,   0,1)
  51 #define MFP_AF1                 MFP(0x0000,    0,0,    0,0,     0,0,   1,1)
  52 #define MFP_AF2                 MFP(0x0000,    0,0,    0,0,     0,0,   2,1)
  53 #define MFP_AF3                 MFP(0x0000,    0,0,    0,0,     0,0,   3,1)
  54 #define MFP_AF4                 MFP(0x0000,    0,0,    0,0,     0,0,   4,1)
  55 #define MFP_AF5                 MFP(0x0000,    0,0,    0,0,     0,0,   5,1)
  56 #define MFP_AF6                 MFP(0x0000,    0,0,    0,0,     0,0,   6,1)
  57 #define MFP_AF7                 MFP(0x0000,    0,0,    0,0,     0,0,   7,1)
  58 #define MFP_AF_MASK             MFP(0x0000,    0,0,    0,0,     0,0,   7,0)
  59
  60 #define MFP_LPM_EDGE_NONE       MFP(0x0000,    0,0,    0,0,     0,1,   0,0)
  61 #define MFP_LPM_EDGE_RISE       MFP(0x0000,    0,0,    0,0,     1,1,   0,0)
  62 #define MFP_LPM_EDGE_FALL       MFP(0x0000,    0,0,    0,0,     2,1,   0,0)
  63 #define MFP_LPM_EDGE_BOTH       MFP(0x0000,    0,0,    0,0,     3,1,   0,0)
  64 #define MFP_LPM_EDGE_MASK       MFP(0x0000,    0,0,    0,0,     3,0,   0,0)
  65
  66 #define MFP_DRIVE_VERY_SLOW     MFP(0x0000,    0,0,    0,1,     0,0,   0,0)
  67 #define MFP_DRIVE_SLOW          MFP(0x0000,    0,0,    1,1,     0,0,   0,0)
  68 #define MFP_DRIVE_MEDIUM        MFP(0x0000,    0,0,    2,1,     0,0,   0,0)
  69 #define MFP_DRIVE_FAST          MFP(0x0000,    0,0,    3,1,     0,0,   0,0)
  70 #define MFP_DRIVE_MASK          MFP(0x0000,    0,0,    3,0,     0,0,   0,0)
  71
  72 #define MFP_PULL_NONE           MFP(0x0000,    0,1,    0,0,     0,0,   0,0)
  73 #define MFP_PULL_LOW            MFP(0x0000,    1,1,    0,0,     0,0,   0,0)
  74 #define MFP_PULL_HIGH           MFP(0x0000,    2,1,    0,0,     0,0,   0,0)
  75 #define MFP_PULL_BOTH           MFP(0x0000,    3,1,    0,0,     0,0,   0,0)
  76 #define MFP_PULL_FLOAT          MFP(0x0000,    4,1,    0,0,     0,0,   0,0)
  77 #define MFP_PULL_MASK           MFP(0x0000,    7,0,    0,0,     0,0,   0,0)
  78
  79 #define MFP_EOC                 0xffffffff      /* indicates end-of-conf */
  80
  81 /* Functions */
  82 void mfp_config(u32 *mfp_cfgs);
  83
  84 #endif /* __MVMFP_H */