150 lines
5.4 KiB
C
150 lines
5.4 KiB
C
/*
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* mpc8610-pcm.h - ALSA PCM interface for the Freescale MPC8610 SoC
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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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#ifndef _MPC8610_PCM_H
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#define _MPC8610_PCM_H
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struct ccsr_dma {
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u8 res0[0x100];
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struct ccsr_dma_channel {
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__be32 mr; /* Mode register */
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__be32 sr; /* Status register */
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__be32 eclndar; /* Current link descriptor extended addr reg */
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__be32 clndar; /* Current link descriptor address register */
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__be32 satr; /* Source attributes register */
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__be32 sar; /* Source address register */
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__be32 datr; /* Destination attributes register */
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__be32 dar; /* Destination address register */
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__be32 bcr; /* Byte count register */
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__be32 enlndar; /* Next link descriptor extended address reg */
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__be32 nlndar; /* Next link descriptor address register */
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u8 res1[4];
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__be32 eclsdar; /* Current list descriptor extended addr reg */
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__be32 clsdar; /* Current list descriptor address register */
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__be32 enlsdar; /* Next list descriptor extended address reg */
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__be32 nlsdar; /* Next list descriptor address register */
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__be32 ssr; /* Source stride register */
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__be32 dsr; /* Destination stride register */
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u8 res2[0x38];
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} channel[4];
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__be32 dgsr;
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};
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#define CCSR_DMA_MR_BWC_DISABLED 0x0F000000
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#define CCSR_DMA_MR_BWC_SHIFT 24
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#define CCSR_DMA_MR_BWC_MASK 0x0F000000
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#define CCSR_DMA_MR_BWC(x) \
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((ilog2(x) << CCSR_DMA_MR_BWC_SHIFT) & CCSR_DMA_MR_BWC_MASK)
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#define CCSR_DMA_MR_EMP_EN 0x00200000
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#define CCSR_DMA_MR_EMS_EN 0x00040000
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#define CCSR_DMA_MR_DAHTS_MASK 0x00030000
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#define CCSR_DMA_MR_DAHTS_1 0x00000000
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#define CCSR_DMA_MR_DAHTS_2 0x00010000
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#define CCSR_DMA_MR_DAHTS_4 0x00020000
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#define CCSR_DMA_MR_DAHTS_8 0x00030000
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#define CCSR_DMA_MR_SAHTS_MASK 0x0000C000
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#define CCSR_DMA_MR_SAHTS_1 0x00000000
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#define CCSR_DMA_MR_SAHTS_2 0x00004000
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#define CCSR_DMA_MR_SAHTS_4 0x00008000
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#define CCSR_DMA_MR_SAHTS_8 0x0000C000
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#define CCSR_DMA_MR_DAHE 0x00002000
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#define CCSR_DMA_MR_SAHE 0x00001000
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#define CCSR_DMA_MR_SRW 0x00000400
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#define CCSR_DMA_MR_EOSIE 0x00000200
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#define CCSR_DMA_MR_EOLNIE 0x00000100
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#define CCSR_DMA_MR_EOLSIE 0x00000080
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#define CCSR_DMA_MR_EIE 0x00000040
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#define CCSR_DMA_MR_XFE 0x00000020
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#define CCSR_DMA_MR_CDSM_SWSM 0x00000010
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#define CCSR_DMA_MR_CA 0x00000008
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#define CCSR_DMA_MR_CTM 0x00000004
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#define CCSR_DMA_MR_CC 0x00000002
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#define CCSR_DMA_MR_CS 0x00000001
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#define CCSR_DMA_SR_TE 0x00000080
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#define CCSR_DMA_SR_CH 0x00000020
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#define CCSR_DMA_SR_PE 0x00000010
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#define CCSR_DMA_SR_EOLNI 0x00000008
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#define CCSR_DMA_SR_CB 0x00000004
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#define CCSR_DMA_SR_EOSI 0x00000002
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#define CCSR_DMA_SR_EOLSI 0x00000001
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/* ECLNDAR takes bits 32-36 of the CLNDAR register */
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static inline u32 CCSR_DMA_ECLNDAR_ADDR(u64 x)
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{
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return (x >> 32) & 0xf;
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}
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#define CCSR_DMA_CLNDAR_ADDR(x) ((x) & 0xFFFFFFFE)
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#define CCSR_DMA_CLNDAR_EOSIE 0x00000008
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/* SATR and DATR, combined */
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#define CCSR_DMA_ATR_PBATMU 0x20000000
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#define CCSR_DMA_ATR_TFLOWLVL_0 0x00000000
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#define CCSR_DMA_ATR_TFLOWLVL_1 0x06000000
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#define CCSR_DMA_ATR_TFLOWLVL_2 0x08000000
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#define CCSR_DMA_ATR_TFLOWLVL_3 0x0C000000
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#define CCSR_DMA_ATR_PCIORDER 0x02000000
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#define CCSR_DMA_ATR_SME 0x01000000
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#define CCSR_DMA_ATR_NOSNOOP 0x00040000
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#define CCSR_DMA_ATR_SNOOP 0x00050000
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#define CCSR_DMA_ATR_ESAD_MASK 0x0000000F
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/**
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* List Descriptor for extended chaining mode DMA operations.
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*
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* The CLSDAR register points to the first (in a linked-list) List
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* Descriptor. Each object must be aligned on a 32-byte boundary. Each
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* list descriptor points to a linked-list of link Descriptors.
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*/
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struct fsl_dma_list_descriptor {
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__be64 next; /* Address of next list descriptor */
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__be64 first_link; /* Address of first link descriptor */
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__be32 source; /* Source stride */
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__be32 dest; /* Destination stride */
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u8 res[8]; /* Reserved */
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} __attribute__ ((aligned(32), packed));
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/**
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* Link Descriptor for basic and extended chaining mode DMA operations.
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*
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* A Link Descriptor points to a single DMA buffer. Each link descriptor
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* must be aligned on a 32-byte boundary.
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*/
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struct fsl_dma_link_descriptor {
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__be32 source_attr; /* Programmed into SATR register */
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__be32 source_addr; /* Programmed into SAR register */
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__be32 dest_attr; /* Programmed into DATR register */
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__be32 dest_addr; /* Programmed into DAR register */
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__be64 next; /* Address of next link descriptor */
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__be32 count; /* Byte count */
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u8 res[4]; /* Reserved */
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} __attribute__ ((aligned(32), packed));
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/* DMA information needed to create a snd_soc_cpu_dai object
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*
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* ssi_stx_phys: bus address of SSI STX register to use
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* ssi_srx_phys: bus address of SSI SRX register to use
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* dma[0]: points to the DMA channel to use for playback
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* dma[1]: points to the DMA channel to use for capture
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* dma_irq[0]: IRQ of the DMA channel to use for playback
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* dma_irq[1]: IRQ of the DMA channel to use for capture
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*/
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struct fsl_dma_info {
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dma_addr_t ssi_stx_phys;
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dma_addr_t ssi_srx_phys;
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struct ccsr_dma_channel __iomem *dma_channel[2];
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unsigned int dma_irq[2];
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};
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extern struct snd_soc_platform fsl_soc_platform;
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int fsl_dma_configure(struct fsl_dma_info *dma_info);
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#endif
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