a622251c01
There is no hardware restriction requiring a minimum of 8 periods, or a minimum of 2048 bytes in a period. Let's drop these values so that userspace has more flexibility in choosing these parameters. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Mark Brown <broonie@linaro.org>
148 lines
4.9 KiB
C
148 lines
4.9 KiB
C
/*
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* kirkwood.h
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*
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* (c) 2010 Arnaud Patard <apatard@mandriva.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef _KIRKWOOD_AUDIO_H
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#define _KIRKWOOD_AUDIO_H
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#define KIRKWOOD_RECORD_WIN 0
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#define KIRKWOOD_PLAYBACK_WIN 1
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#define KIRKWOOD_MAX_AUDIO_WIN 2
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#define KIRKWOOD_AUDIO_WIN_BASE_REG(win) (0xA00 + ((win)<<3))
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#define KIRKWOOD_AUDIO_WIN_CTRL_REG(win) (0xA04 + ((win)<<3))
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#define KIRKWOOD_RECCTL 0x1000
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#define KIRKWOOD_RECCTL_SPDIF_EN (1<<11)
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#define KIRKWOOD_RECCTL_I2S_EN (1<<10)
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#define KIRKWOOD_RECCTL_PAUSE (1<<9)
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#define KIRKWOOD_RECCTL_MUTE (1<<8)
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#define KIRKWOOD_RECCTL_BURST_MASK (3<<5)
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#define KIRKWOOD_RECCTL_BURST_128 (2<<5)
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#define KIRKWOOD_RECCTL_BURST_32 (1<<5)
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#define KIRKWOOD_RECCTL_MONO (1<<4)
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#define KIRKWOOD_RECCTL_MONO_CHAN_RIGHT (1<<3)
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#define KIRKWOOD_RECCTL_MONO_CHAN_LEFT (0<<3)
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#define KIRKWOOD_RECCTL_SIZE_MASK (7<<0)
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#define KIRKWOOD_RECCTL_SIZE_16 (7<<0)
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#define KIRKWOOD_RECCTL_SIZE_16_C (3<<0)
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#define KIRKWOOD_RECCTL_SIZE_20 (2<<0)
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#define KIRKWOOD_RECCTL_SIZE_24 (1<<0)
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#define KIRKWOOD_RECCTL_SIZE_32 (0<<0)
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#define KIRKWOOD_RECCTL_ENABLE_MASK (KIRKWOOD_RECCTL_SPDIF_EN | \
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KIRKWOOD_RECCTL_I2S_EN)
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#define KIRKWOOD_REC_BUF_ADDR 0x1004
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#define KIRKWOOD_REC_BUF_SIZE 0x1008
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#define KIRKWOOD_REC_BYTE_COUNT 0x100C
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#define KIRKWOOD_PLAYCTL 0x1100
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#define KIRKWOOD_PLAYCTL_PLAY_BUSY (1<<16)
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#define KIRKWOOD_PLAYCTL_BURST_MASK (3<<11)
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#define KIRKWOOD_PLAYCTL_BURST_128 (2<<11)
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#define KIRKWOOD_PLAYCTL_BURST_32 (1<<11)
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#define KIRKWOOD_PLAYCTL_PAUSE (1<<9)
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#define KIRKWOOD_PLAYCTL_SPDIF_MUTE (1<<8)
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#define KIRKWOOD_PLAYCTL_MONO_MASK (3<<5)
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#define KIRKWOOD_PLAYCTL_MONO_BOTH (3<<5)
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#define KIRKWOOD_PLAYCTL_MONO_OFF (0<<5)
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#define KIRKWOOD_PLAYCTL_I2S_MUTE (1<<7)
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#define KIRKWOOD_PLAYCTL_SPDIF_EN (1<<4)
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#define KIRKWOOD_PLAYCTL_I2S_EN (1<<3)
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#define KIRKWOOD_PLAYCTL_SIZE_MASK (7<<0)
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#define KIRKWOOD_PLAYCTL_SIZE_16 (7<<0)
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#define KIRKWOOD_PLAYCTL_SIZE_16_C (3<<0)
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#define KIRKWOOD_PLAYCTL_SIZE_20 (2<<0)
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#define KIRKWOOD_PLAYCTL_SIZE_24 (1<<0)
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#define KIRKWOOD_PLAYCTL_SIZE_32 (0<<0)
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#define KIRKWOOD_PLAYCTL_ENABLE_MASK (KIRKWOOD_PLAYCTL_SPDIF_EN | \
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KIRKWOOD_PLAYCTL_I2S_EN)
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#define KIRKWOOD_PLAY_BUF_ADDR 0x1104
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#define KIRKWOOD_PLAY_BUF_SIZE 0x1108
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#define KIRKWOOD_PLAY_BYTE_COUNT 0x110C
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#define KIRKWOOD_DCO_CTL 0x1204
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#define KIRKWOOD_DCO_CTL_OFFSET_MASK (0xFFF<<2)
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#define KIRKWOOD_DCO_CTL_OFFSET_0 (0x800<<2)
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#define KIRKWOOD_DCO_CTL_FREQ_MASK (3<<0)
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#define KIRKWOOD_DCO_CTL_FREQ_11 (0<<0)
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#define KIRKWOOD_DCO_CTL_FREQ_12 (1<<0)
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#define KIRKWOOD_DCO_CTL_FREQ_24 (2<<0)
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#define KIRKWOOD_DCO_SPCR_STATUS 0x120c
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#define KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK (1<<16)
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#define KIRKWOOD_CLOCKS_CTRL 0x1230
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#define KIRKWOOD_MCLK_SOURCE_MASK (3<<0)
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#define KIRKWOOD_MCLK_SOURCE_DCO (0<<0)
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#define KIRKWOOD_MCLK_SOURCE_EXTCLK (3<<0)
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#define KIRKWOOD_ERR_CAUSE 0x1300
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#define KIRKWOOD_ERR_MASK 0x1304
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#define KIRKWOOD_INT_CAUSE 0x1308
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#define KIRKWOOD_INT_MASK 0x130C
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#define KIRKWOOD_INT_CAUSE_PLAY_BYTES (1<<14)
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#define KIRKWOOD_INT_CAUSE_REC_BYTES (1<<13)
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#define KIRKWOOD_INT_CAUSE_DMA_PLAY_END (1<<7)
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#define KIRKWOOD_INT_CAUSE_DMA_PLAY_3Q (1<<6)
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#define KIRKWOOD_INT_CAUSE_DMA_PLAY_HALF (1<<5)
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#define KIRKWOOD_INT_CAUSE_DMA_PLAY_1Q (1<<4)
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#define KIRKWOOD_INT_CAUSE_DMA_REC_END (1<<3)
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#define KIRKWOOD_INT_CAUSE_DMA_REC_3Q (1<<2)
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#define KIRKWOOD_INT_CAUSE_DMA_REC_HALF (1<<1)
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#define KIRKWOOD_INT_CAUSE_DMA_REC_1Q (1<<0)
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#define KIRKWOOD_REC_BYTE_INT_COUNT 0x1310
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#define KIRKWOOD_PLAY_BYTE_INT_COUNT 0x1314
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#define KIRKWOOD_BYTE_INT_COUNT_MASK 0xffffff
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#define KIRKWOOD_I2S_PLAYCTL 0x2508
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#define KIRKWOOD_I2S_RECCTL 0x2408
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#define KIRKWOOD_I2S_CTL_JUST_MASK (0xf<<26)
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#define KIRKWOOD_I2S_CTL_LJ (0<<26)
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#define KIRKWOOD_I2S_CTL_I2S (5<<26)
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#define KIRKWOOD_I2S_CTL_RJ (8<<26)
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#define KIRKWOOD_I2S_CTL_SIZE_MASK (3<<30)
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#define KIRKWOOD_I2S_CTL_SIZE_16 (3<<30)
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#define KIRKWOOD_I2S_CTL_SIZE_20 (2<<30)
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#define KIRKWOOD_I2S_CTL_SIZE_24 (1<<30)
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#define KIRKWOOD_I2S_CTL_SIZE_32 (0<<30)
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#define KIRKWOOD_AUDIO_BUF_MAX (16*1024*1024)
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/* Theses values come from the marvell alsa driver */
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/* need to find where they come from */
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#define KIRKWOOD_SND_MIN_PERIODS 2
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#define KIRKWOOD_SND_MAX_PERIODS 16
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#define KIRKWOOD_SND_MIN_PERIOD_BYTES 256
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#define KIRKWOOD_SND_MAX_PERIOD_BYTES 0x8000
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#define KIRKWOOD_SND_MAX_BUFFER_BYTES (KIRKWOOD_SND_MAX_PERIOD_BYTES \
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* KIRKWOOD_SND_MAX_PERIODS)
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struct kirkwood_dma_data {
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void __iomem *io;
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struct clk *clk;
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struct clk *extclk;
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uint32_t ctl_play;
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uint32_t ctl_rec;
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struct snd_pcm_substream *substream_play;
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struct snd_pcm_substream *substream_rec;
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int irq;
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int burst;
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};
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extern struct snd_soc_platform_driver kirkwood_soc_platform;
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#endif
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