2 * mpc8610-pcm.h - ALSA PCM interface for the Freescale MPC8610 SoC
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
10 #define _MPC8610_PCM_H
14 struct ccsr_dma_channel {
15 __be32 mr; /* Mode register */
16 __be32 sr; /* Status register */
17 __be32 eclndar; /* Current link descriptor extended addr reg */
18 __be32 clndar; /* Current link descriptor address register */
19 __be32 satr; /* Source attributes register */
20 __be32 sar; /* Source address register */
21 __be32 datr; /* Destination attributes register */
22 __be32 dar; /* Destination address register */
23 __be32 bcr; /* Byte count register */
24 __be32 enlndar; /* Next link descriptor extended address reg */
25 __be32 nlndar; /* Next link descriptor address register */
27 __be32 eclsdar; /* Current list descriptor extended addr reg */
28 __be32 clsdar; /* Current list descriptor address register */
29 __be32 enlsdar; /* Next list descriptor extended address reg */
30 __be32 nlsdar; /* Next list descriptor address register */
31 __be32 ssr; /* Source stride register */
32 __be32 dsr; /* Destination stride register */
38 #define CCSR_DMA_MR_BWC_DISABLED 0x0F000000
39 #define CCSR_DMA_MR_BWC_SHIFT 24
40 #define CCSR_DMA_MR_BWC_MASK 0x0F000000
41 #define CCSR_DMA_MR_BWC(x) \
42 ((ilog2(x) << CCSR_DMA_MR_BWC_SHIFT) & CCSR_DMA_MR_BWC_MASK)
43 #define CCSR_DMA_MR_EMP_EN 0x00200000
44 #define CCSR_DMA_MR_EMS_EN 0x00040000
45 #define CCSR_DMA_MR_DAHTS_MASK 0x00030000
46 #define CCSR_DMA_MR_DAHTS_1 0x00000000
47 #define CCSR_DMA_MR_DAHTS_2 0x00010000
48 #define CCSR_DMA_MR_DAHTS_4 0x00020000
49 #define CCSR_DMA_MR_DAHTS_8 0x00030000
50 #define CCSR_DMA_MR_SAHTS_MASK 0x0000C000
51 #define CCSR_DMA_MR_SAHTS_1 0x00000000
52 #define CCSR_DMA_MR_SAHTS_2 0x00004000
53 #define CCSR_DMA_MR_SAHTS_4 0x00008000
54 #define CCSR_DMA_MR_SAHTS_8 0x0000C000
55 #define CCSR_DMA_MR_DAHE 0x00002000
56 #define CCSR_DMA_MR_SAHE 0x00001000
57 #define CCSR_DMA_MR_SRW 0x00000400
58 #define CCSR_DMA_MR_EOSIE 0x00000200
59 #define CCSR_DMA_MR_EOLNIE 0x00000100
60 #define CCSR_DMA_MR_EOLSIE 0x00000080
61 #define CCSR_DMA_MR_EIE 0x00000040
62 #define CCSR_DMA_MR_XFE 0x00000020
63 #define CCSR_DMA_MR_CDSM_SWSM 0x00000010
64 #define CCSR_DMA_MR_CA 0x00000008
65 #define CCSR_DMA_MR_CTM 0x00000004
66 #define CCSR_DMA_MR_CC 0x00000002
67 #define CCSR_DMA_MR_CS 0x00000001
69 #define CCSR_DMA_SR_TE 0x00000080
70 #define CCSR_DMA_SR_CH 0x00000020
71 #define CCSR_DMA_SR_PE 0x00000010
72 #define CCSR_DMA_SR_EOLNI 0x00000008
73 #define CCSR_DMA_SR_CB 0x00000004
74 #define CCSR_DMA_SR_EOSI 0x00000002
75 #define CCSR_DMA_SR_EOLSI 0x00000001
77 /* ECLNDAR takes bits 32-36 of the CLNDAR register */
78 static inline u32 CCSR_DMA_ECLNDAR_ADDR(u64 x)
80 return (x >> 32) & 0xf;
83 #define CCSR_DMA_CLNDAR_ADDR(x) ((x) & 0xFFFFFFFE)
84 #define CCSR_DMA_CLNDAR_EOSIE 0x00000008
86 /* SATR and DATR, combined */
87 #define CCSR_DMA_ATR_PBATMU 0x20000000
88 #define CCSR_DMA_ATR_TFLOWLVL_0 0x00000000
89 #define CCSR_DMA_ATR_TFLOWLVL_1 0x06000000
90 #define CCSR_DMA_ATR_TFLOWLVL_2 0x08000000
91 #define CCSR_DMA_ATR_TFLOWLVL_3 0x0C000000
92 #define CCSR_DMA_ATR_PCIORDER 0x02000000
93 #define CCSR_DMA_ATR_SME 0x01000000
94 #define CCSR_DMA_ATR_NOSNOOP 0x00040000
95 #define CCSR_DMA_ATR_SNOOP 0x00050000
96 #define CCSR_DMA_ATR_ESAD_MASK 0x0000000F
99 * List Descriptor for extended chaining mode DMA operations.
101 * The CLSDAR register points to the first (in a linked-list) List
102 * Descriptor. Each object must be aligned on a 32-byte boundary. Each
103 * list descriptor points to a linked-list of link Descriptors.
105 struct fsl_dma_list_descriptor {
106 __be64 next; /* Address of next list descriptor */
107 __be64 first_link; /* Address of first link descriptor */
108 __be32 source; /* Source stride */
109 __be32 dest; /* Destination stride */
110 u8 res[8]; /* Reserved */
111 } __attribute__ ((aligned(32), packed));
114 * Link Descriptor for basic and extended chaining mode DMA operations.
116 * A Link Descriptor points to a single DMA buffer. Each link descriptor
117 * must be aligned on a 32-byte boundary.
119 struct fsl_dma_link_descriptor {
120 __be32 source_attr; /* Programmed into SATR register */
121 __be32 source_addr; /* Programmed into SAR register */
122 __be32 dest_attr; /* Programmed into DATR register */
123 __be32 dest_addr; /* Programmed into DAR register */
124 __be64 next; /* Address of next link descriptor */
125 __be32 count; /* Byte count */
126 u8 res[4]; /* Reserved */
127 } __attribute__ ((aligned(32), packed));
129 /* DMA information needed to create a snd_soc_dai object
131 * ssi_stx_phys: bus address of SSI STX register to use
132 * ssi_srx_phys: bus address of SSI SRX register to use
133 * dma[0]: points to the DMA channel to use for playback
134 * dma[1]: points to the DMA channel to use for capture
135 * dma_irq[0]: IRQ of the DMA channel to use for playback
136 * dma_irq[1]: IRQ of the DMA channel to use for capture
138 struct fsl_dma_info {
139 dma_addr_t ssi_stx_phys;
140 dma_addr_t ssi_srx_phys;
141 struct ccsr_dma_channel __iomem *dma_channel[2];
142 unsigned int dma_irq[2];
145 extern struct snd_soc_platform fsl_soc_platform;
147 int fsl_dma_configure(struct fsl_dma_info *dma_info);