78 lines
2 KiB
C
78 lines
2 KiB
C
/*
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* Renesas SuperH DMA Engine support for r8a73a4 (APE6) SoCs
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*
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* Copyright (C) 2013 Renesas Electronics, Inc.
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*
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* This is free software; you can redistribute it and/or modify it under the
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* terms of version 2 the GNU General Public License as published by the Free
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* Software Foundation.
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*/
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#include <linux/sh_dma.h>
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#include "shdma-arm.h"
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static const unsigned int dma_ts_shift[] = SH_DMAE_TS_SHIFT;
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static const struct sh_dmae_slave_config dma_slaves[] = {
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{
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.chcr = CHCR_TX(XMIT_SZ_32BIT),
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.mid_rid = 0xd1, /* MMC0 Tx */
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}, {
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.chcr = CHCR_RX(XMIT_SZ_32BIT),
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.mid_rid = 0xd2, /* MMC0 Rx */
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}, {
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.chcr = CHCR_TX(XMIT_SZ_32BIT),
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.mid_rid = 0xe1, /* MMC1 Tx */
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}, {
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.chcr = CHCR_RX(XMIT_SZ_32BIT),
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.mid_rid = 0xe2, /* MMC1 Rx */
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},
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};
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#define DMAE_CHANNEL(a, b) \
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{ \
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.offset = (a) - 0x20, \
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.dmars = (a) - 0x20 + 0x40, \
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.chclr_bit = (b), \
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.chclr_offset = 0x80 - 0x20, \
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}
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static const struct sh_dmae_channel dma_channels[] = {
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DMAE_CHANNEL(0x8000, 0),
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DMAE_CHANNEL(0x8080, 1),
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DMAE_CHANNEL(0x8100, 2),
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DMAE_CHANNEL(0x8180, 3),
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DMAE_CHANNEL(0x8200, 4),
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DMAE_CHANNEL(0x8280, 5),
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DMAE_CHANNEL(0x8300, 6),
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DMAE_CHANNEL(0x8380, 7),
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DMAE_CHANNEL(0x8400, 8),
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DMAE_CHANNEL(0x8480, 9),
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DMAE_CHANNEL(0x8500, 10),
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DMAE_CHANNEL(0x8580, 11),
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DMAE_CHANNEL(0x8600, 12),
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DMAE_CHANNEL(0x8680, 13),
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DMAE_CHANNEL(0x8700, 14),
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DMAE_CHANNEL(0x8780, 15),
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DMAE_CHANNEL(0x8800, 16),
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DMAE_CHANNEL(0x8880, 17),
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DMAE_CHANNEL(0x8900, 18),
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DMAE_CHANNEL(0x8980, 19),
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};
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const struct sh_dmae_pdata r8a73a4_dma_pdata = {
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.slave = dma_slaves,
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.slave_num = ARRAY_SIZE(dma_slaves),
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.channel = dma_channels,
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.channel_num = ARRAY_SIZE(dma_channels),
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.ts_low_shift = TS_LOW_SHIFT,
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.ts_low_mask = TS_LOW_BIT << TS_LOW_SHIFT,
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.ts_high_shift = TS_HI_SHIFT,
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.ts_high_mask = TS_HI_BIT << TS_HI_SHIFT,
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.ts_shift = dma_ts_shift,
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.ts_shift_num = ARRAY_SIZE(dma_ts_shift),
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.dmaor_init = DMAOR_DME,
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.chclr_present = 1,
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.chclr_bitwise = 1,
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};
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