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aaci.h
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/*
* linux/sound/arm/aaci.c - ARM PrimeCell AACI PL041 driver
*
* Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef AACI_H
#define AACI_H
/*
* Control and status register offsets
* P39.
*/
#define AACI_CSCH1 0x000
#define AACI_CSCH2 0x014
#define AACI_CSCH3 0x028
#define AACI_CSCH4 0x03c
#define AACI_RXCR 0x000 /* 29 bits Control Rx FIFO */
#define AACI_TXCR 0x004 /* 17 bits Control Tx FIFO */
#define AACI_SR 0x008 /* 12 bits Status */
#define AACI_ISR 0x00c /* 7 bits Int Status */
#define AACI_IE 0x010 /* 7 bits Int Enable */
/*
* Other registers
*/
#define AACI_SL1RX 0x050
#define AACI_SL1TX 0x054
#define AACI_SL2RX 0x058
#define AACI_SL2TX 0x05c
#define AACI_SL12RX 0x060
#define AACI_SL12TX 0x064
#define AACI_SLFR 0x068 /* slot flags */
#define AACI_SLISTAT 0x06c /* slot interrupt status */
#define AACI_SLIEN 0x070 /* slot interrupt enable */
#define AACI_INTCLR 0x074 /* interrupt clear */
#define AACI_MAINCR 0x078 /* main control */
#define AACI_RESET 0x07c /* reset control */
#define AACI_SYNC 0x080 /* sync control */
#define AACI_ALLINTS 0x084 /* all fifo interrupt status */
#define AACI_MAINFR 0x088 /* main flag register */
#define AACI_DR1 0x090 /* data read/written fifo 1 */
#define AACI_DR2 0x0b0 /* data read/written fifo 2 */
#define AACI_DR3 0x0d0 /* data read/written fifo 3 */
#define AACI_DR4 0x0f0 /* data read/written fifo 4 */
/*
* TX/RX fifo control register (CR). P48
*/
#define CR_FEN (1 << 16) /* fifo enable */
#define CR_COMPACT (1 << 15) /* compact mode */
#define CR_SZ16 (0 << 13) /* 16 bits */
#define CR_SZ18 (1 << 13) /* 18 bits */
#define CR_SZ20 (2 << 13) /* 20 bits */
#define CR_SZ12 (3 << 13) /* 12 bits */
#define CR_SL12 (1 << 12)
#define CR_SL11 (1 << 11)
#define CR_SL10 (1 << 10)
#define CR_SL9 (1 << 9)
#define CR_SL8 (1 << 8)
#define CR_SL7 (1 << 7)
#define CR_SL6 (1 << 6)
#define CR_SL5 (1 << 5)
#define CR_SL4 (1 << 4)
#define CR_SL3 (1 << 3)
#define CR_SL2 (1 << 2)
#define CR_SL1 (1 << 1)
#define CR_EN (1 << 0) /* transmit enable */
/*
* status register bits. P49
*/
#define SR_RXTOFE (1 << 11) /* rx timeout fifo empty */
#define SR_TXTO (1 << 10) /* rx timeout fifo nonempty */
#define SR_TXU (1 << 9) /* tx underrun */
#define SR_RXO (1 << 8) /* rx overrun */
#define SR_TXB (1 << 7) /* tx busy */
#define SR_RXB (1 << 6) /* rx busy */
#define SR_TXFF (1 << 5) /* tx fifo full */
#define SR_RXFF (1 << 4) /* rx fifo full */
#define SR_TXHE (1 << 3) /* tx fifo half empty */
#define SR_RXHF (1 << 2) /* rx fifo half full */
#define SR_TXFE (1 << 1) /* tx fifo empty */
#define SR_RXFE (1 << 0) /* rx fifo empty */
/*
* interrupt status register bits.
*/
#define ISR_RXTOFEINTR (1 << 6) /* rx fifo empty */
#define ISR_URINTR (1 << 5) /* tx underflow */
#define ISR_ORINTR (1 << 4) /* rx overflow */
#define ISR_RXINTR (1 << 3) /* rx fifo */
#define ISR_TXINTR (1 << 2) /* tx fifo intr */
#define ISR_RXTOINTR (1 << 1) /* tx timeout */
#define ISR_TXCINTR (1 << 0) /* tx complete */
/*
* interrupt enable register bits.
*/
#define IE_RXTOIE (1 << 6)
#define IE_URIE (1 << 5)
#define IE_ORIE (1 << 4)
#define IE_RXIE (1 << 3)
#define IE_TXIE (1 << 2)
#define IE_RXTIE (1 << 1)
#define IE_TXCIE (1 << 0)
/*
* interrupt status. P51
*/
#define ISR_RXTOFE (1 << 6) /* rx timeout fifo empty */
#define ISR_UR (1 << 5) /* tx fifo underrun */
#define ISR_OR (1 << 4) /* rx fifo overrun */
#define ISR_RX (1 << 3) /* rx interrupt status */
#define ISR_TX (1 << 2) /* tx interrupt status */
#define ISR_RXTO (1 << 1) /* rx timeout */
#define ISR_TXC (1 << 0) /* tx complete */
/*
* interrupt enable. P52
*/
#define IE_RXTOFE (1 << 6) /* rx timeout fifo empty */
#define IE_UR (1 << 5) /* tx fifo underrun */
#define IE_OR (1 << 4) /* rx fifo overrun */
#define IE_RX (1 << 3) /* rx interrupt status */
#define IE_TX (1 << 2) /* tx interrupt status */
#define IE_RXTO (1 << 1) /* rx timeout */
#define IE_TXC (1 << 0) /* tx complete */
/*
* slot flag register bits. P56
*/
#define SLFR_RWIS (1 << 13) /* raw wake-up interrupt status */
#define SLFR_RGPIOINTR (1 << 12) /* raw gpio interrupt */
#define SLFR_12TXE (1 << 11) /* slot 12 tx empty */
#define SLFR_12RXV (1 << 10) /* slot 12 rx valid */
#define SLFR_2TXE (1 << 9) /* slot 2 tx empty */
#define SLFR_2RXV (1 << 8) /* slot 2 rx valid */
#define SLFR_1TXE (1 << 7) /* slot 1 tx empty */
#define SLFR_1RXV (1 << 6) /* slot 1 rx valid */
#define SLFR_12TXB (1 << 5) /* slot 12 tx busy */
#define SLFR_12RXB (1 << 4) /* slot 12 rx busy */
#define SLFR_2TXB (1 << 3) /* slot 2 tx busy */
#define SLFR_2RXB (1 << 2) /* slot 2 rx busy */
#define SLFR_1TXB (1 << 1) /* slot 1 tx busy */
#define SLFR_1RXB (1 << 0) /* slot 1 rx busy */
/*
* Interrupt clear register.
*/
#define ICLR_RXTOFEC4 (1 << 12)
#define ICLR_RXTOFEC3 (1 << 11)
#define ICLR_RXTOFEC2 (1 << 10)
#define ICLR_RXTOFEC1 (1 << 9)
#define ICLR_TXUEC4 (1 << 8)
#define ICLR_TXUEC3 (1 << 7)
#define ICLR_TXUEC2 (1 << 6)
#define ICLR_TXUEC1 (1 << 5)
#define ICLR_RXOEC4 (1 << 4)
#define ICLR_RXOEC3 (1 << 3)
#define ICLR_RXOEC2 (1 << 2)
#define ICLR_RXOEC1 (1 << 1)
#define ICLR_WISC (1 << 0)
/*
* Main control register bits. P62
*/
#define MAINCR_SCRA(x) ((x) << 10) /* secondary codec reg access */
#define MAINCR_DMAEN (1 << 9) /* dma enable */
#define MAINCR_SL12TXEN (1 << 8) /* slot 12 transmit enable */
#define MAINCR_SL12RXEN (1 << 7) /* slot 12 receive enable */
#define MAINCR_SL2TXEN (1 << 6) /* slot 2 transmit enable */
#define MAINCR_SL2RXEN (1 << 5) /* slot 2 receive enable */
#define MAINCR_SL1TXEN (1 << 4) /* slot 1 transmit enable */
#define MAINCR_SL1RXEN (1 << 3) /* slot 1 receive enable */
#define MAINCR_LPM (1 << 2) /* low power mode */
#define MAINCR_LOOPBK (1 << 1) /* loopback */
#define MAINCR_IE (1 << 0) /* aaci interface enable */
/*
* Reset register bits. P65
*/
#define RESET_NRST (1 << 0)
/*
* Sync register bits. P65
*/
#define SYNC_FORCE (1 << 0)
/*
* Main flag register bits. P66
*/
#define MAINFR_TXB (1 << 1) /* transmit busy */
#define MAINFR_RXB (1 << 0) /* receive busy */
struct aaci_runtime {
void __iomem *base;
void __iomem *fifo;
spinlock_t lock;
struct ac97_pcm *pcm;
int pcm_open;
u32 cr;
struct snd_pcm_substream *substream;
unsigned int period; /* byte size of a "period" */
/*
* PIO support
*/
void *start;
void *end;
void *ptr;
int bytes;
unsigned int fifo_bytes;
};
struct aaci {
struct amba_device *dev;
struct snd_card *card;
void __iomem *base;
unsigned int fifo_depth;
unsigned int users;
struct mutex irq_lock;
/* AC'97 */
struct mutex ac97_sem;
struct snd_ac97_bus *ac97_bus;
struct snd_ac97 *ac97;
u32 maincr;
struct aaci_runtime playback;
struct aaci_runtime capture;
struct snd_pcm *pcm;
};
#define ACSTREAM_FRONT 0
#define ACSTREAM_SURROUND 1
#define ACSTREAM_LFE 2
#endif