766812e6d5
SupherH FSI2 can use special data transfer, but it depends on CPU-FSI2 connection style. We can use 16bit data stream mode if it was valid connection, and it is required for 16bit data DMA transfer / SPDIF sound output. We can use 24bit data transfer if it was invalid connection. We can select connection type if CPU is SH7372, and it is always valid connection if latest SuperH. This patch adds new bus_option and fsi_bus_setup() for supporting these feature. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
92 lines
2 KiB
C
92 lines
2 KiB
C
#ifndef __SOUND_FSI_H
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#define __SOUND_FSI_H
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/*
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* Fifo-attached Serial Interface (FSI) support for SH7724
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*
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* Copyright (C) 2009 Renesas Solutions Corp.
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* Kuninori Morimoto <morimoto.kuninori@renesas.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#define FSI_PORT_A 0
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#define FSI_PORT_B 1
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#include <linux/clk.h>
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#include <sound/soc.h>
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/*
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* flags format
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*
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* 0x00000CBA
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*
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* A: inversion
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* B: format mode
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* C: chip specific
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*/
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/* A: clock inversion */
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#define SH_FSI_INVERSION_MASK 0x0000000F
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#define SH_FSI_LRM_INV (1 << 0)
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#define SH_FSI_BRM_INV (1 << 1)
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#define SH_FSI_LRS_INV (1 << 2)
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#define SH_FSI_BRS_INV (1 << 3)
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/* B: format mode */
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#define SH_FSI_FMT_MASK 0x000000F0
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#define SH_FSI_FMT_DAI (0 << 4)
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#define SH_FSI_FMT_SPDIF (1 << 4)
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/* C: chip specific */
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#define SH_FSI_OPTION_MASK 0x00000F00
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#define SH_FSI_ENABLE_STREAM_MODE (1 << 8) /* for 16bit data */
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/*
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* set_rate return value
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*
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* see ACKMD/BPFMD on
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* ACK_MD (FSI2)
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* CKG1 (FSI)
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*
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* err : return value < 0
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* no change : return value == 0
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* change xMD : return value > 0
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*
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* 0x-00000AB
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*
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* A: ACKMD value
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* B: BPFMD value
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*/
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#define SH_FSI_ACKMD_MASK (0xF << 0)
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#define SH_FSI_ACKMD_512 (1 << 0)
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#define SH_FSI_ACKMD_256 (2 << 0)
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#define SH_FSI_ACKMD_128 (3 << 0)
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#define SH_FSI_ACKMD_64 (4 << 0)
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#define SH_FSI_ACKMD_32 (5 << 0)
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#define SH_FSI_BPFMD_MASK (0xF << 4)
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#define SH_FSI_BPFMD_512 (1 << 4)
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#define SH_FSI_BPFMD_256 (2 << 4)
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#define SH_FSI_BPFMD_128 (3 << 4)
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#define SH_FSI_BPFMD_64 (4 << 4)
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#define SH_FSI_BPFMD_32 (5 << 4)
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#define SH_FSI_BPFMD_16 (6 << 4)
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struct sh_fsi_port_info {
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unsigned long flags;
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int tx_id;
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int rx_id;
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int (*set_rate)(struct device *dev, int rate, int enable);
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};
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struct sh_fsi_platform_info {
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struct sh_fsi_port_info port_a;
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struct sh_fsi_port_info port_b;
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};
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#endif /* __SOUND_FSI_H */
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