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Diffstat (limited to 'sound/arm/aaci.h')
| -rw-r--r-- | sound/arm/aaci.h | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/sound/arm/aaci.h b/sound/arm/aaci.h new file mode 100644 index 000000000..18680e7f8 --- /dev/null +++ b/sound/arm/aaci.h @@ -0,0 +1,247 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/sound/arm/aaci.c - ARM PrimeCell AACI PL041 driver + * + * Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved. + */ +#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 |