kernel/include/linux/platform_data/dma-rcar-hpbdma.h

   1 /*
   2  * Copyright (C) 2011-2013 Renesas Electronics Corporation
   3  * Copyright (C) 2013 Cogent Embedded, Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.
   8  */
   9
  10 #ifndef __DMA_RCAR_HPBDMA_H
  11 #define __DMA_RCAR_HPBDMA_H
  12
  13 #include <linux/bitops.h>
  14 #include <linux/types.h>
  15
  16 /* Transmit sizes and respective register values */
  17 enum {
  18         XMIT_SZ_8BIT    = 0,
  19         XMIT_SZ_16BIT   = 1,
  20         XMIT_SZ_32BIT   = 2,
  21         XMIT_SZ_MAX
  22 };
  23
  24 /* DMA control register (DCR) bits */
  25 #define HPB_DMAE_DCR_DTAMD              (1u << 26)
  26 #define HPB_DMAE_DCR_DTAC               (1u << 25)
  27 #define HPB_DMAE_DCR_DTAU               (1u << 24)
  28 #define HPB_DMAE_DCR_DTAU1              (1u << 23)
  29 #define HPB_DMAE_DCR_SWMD               (1u << 22)
  30 #define HPB_DMAE_DCR_BTMD               (1u << 21)
  31 #define HPB_DMAE_DCR_PKMD               (1u << 20)
  32 #define HPB_DMAE_DCR_CT                 (1u << 18)
  33 #define HPB_DMAE_DCR_ACMD               (1u << 17)
  34 #define HPB_DMAE_DCR_DIP                (1u << 16)
  35 #define HPB_DMAE_DCR_SMDL               (1u << 13)
  36 #define HPB_DMAE_DCR_SPDAM              (1u << 12)
  37 #define HPB_DMAE_DCR_SDRMD_MASK         (3u << 10)
  38 #define HPB_DMAE_DCR_SDRMD_MOD          (0u << 10)
  39 #define HPB_DMAE_DCR_SDRMD_AUTO         (1u << 10)
  40 #define HPB_DMAE_DCR_SDRMD_TIMER        (2u << 10)
  41 #define HPB_DMAE_DCR_SPDS_MASK          (3u << 8)
  42 #define HPB_DMAE_DCR_SPDS_8BIT          (0u << 8)
  43 #define HPB_DMAE_DCR_SPDS_16BIT         (1u << 8)
  44 #define HPB_DMAE_DCR_SPDS_32BIT         (2u << 8)
  45 #define HPB_DMAE_DCR_DMDL               (1u << 5)
  46 #define HPB_DMAE_DCR_DPDAM              (1u << 4)
  47 #define HPB_DMAE_DCR_DDRMD_MASK         (3u << 2)
  48 #define HPB_DMAE_DCR_DDRMD_MOD          (0u << 2)
  49 #define HPB_DMAE_DCR_DDRMD_AUTO         (1u << 2)
  50 #define HPB_DMAE_DCR_DDRMD_TIMER        (2u << 2)
  51 #define HPB_DMAE_DCR_DPDS_MASK          (3u << 0)
  52 #define HPB_DMAE_DCR_DPDS_8BIT          (0u << 0)
  53 #define HPB_DMAE_DCR_DPDS_16BIT         (1u << 0)
  54 #define HPB_DMAE_DCR_DPDS_32BIT         (2u << 0)
  55
  56 /* Asynchronous reset register (ASYNCRSTR) bits */
  57 #define HPB_DMAE_ASYNCRSTR_ASRST41      BIT(10)
  58 #define HPB_DMAE_ASYNCRSTR_ASRST40      BIT(9)
  59 #define HPB_DMAE_ASYNCRSTR_ASRST39      BIT(8)
  60 #define HPB_DMAE_ASYNCRSTR_ASRST27      BIT(7)
  61 #define HPB_DMAE_ASYNCRSTR_ASRST26      BIT(6)
  62 #define HPB_DMAE_ASYNCRSTR_ASRST25      BIT(5)
  63 #define HPB_DMAE_ASYNCRSTR_ASRST24      BIT(4)
  64 #define HPB_DMAE_ASYNCRSTR_ASRST23      BIT(3)
  65 #define HPB_DMAE_ASYNCRSTR_ASRST22      BIT(2)
  66 #define HPB_DMAE_ASYNCRSTR_ASRST21      BIT(1)
  67 #define HPB_DMAE_ASYNCRSTR_ASRST20      BIT(0)
  68
  69 struct hpb_dmae_slave_config {
  70         unsigned int    id;
  71         dma_addr_t      addr;
  72         u32             dcr;
  73         u32             port;
  74         u32             rstr;
  75         u32             mdr;
  76         u32             mdm;
  77         u32             flags;
  78 #define HPB_DMAE_SET_ASYNC_RESET        BIT(0)
  79 #define HPB_DMAE_SET_ASYNC_MODE         BIT(1)
  80         u32             dma_ch;
  81 };
  82
  83 #define HPB_DMAE_CHANNEL(_irq, _s_id)   \
  84 {                                       \
  85         .ch_irq         = _irq,         \
  86         .s_id           = _s_id,        \
  87 }
  88
  89 struct hpb_dmae_channel {
  90         unsigned int    ch_irq;
  91         unsigned int    s_id;
  92 };
  93
  94 struct hpb_dmae_pdata {
  95         const struct hpb_dmae_slave_config *slaves;
  96         int num_slaves;
  97         const struct hpb_dmae_channel *channels;
  98         int num_channels;
  99         const unsigned int ts_shift[XMIT_SZ_MAX];
 100         int num_hw_channels;
 101 };
 102
 103 #endif