1 /*
2  * Renesas R-Car SRU/SCU/SSIU/SSI support
3  *
4  * Copyright (C) 2013 Renesas Solutions Corp.
5  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11 
12 #ifndef RCAR_SND_H
13 #define RCAR_SND_H
14 
15 #include <linux/sh_clk.h>
16 
17 #define RSND_GEN1_SRU	0
18 #define RSND_GEN1_ADG	1
19 #define RSND_GEN1_SSI	2
20 
21 #define RSND_GEN2_SCU	0
22 #define RSND_GEN2_ADG	1
23 #define RSND_GEN2_SSIU	2
24 #define RSND_GEN2_SSI	3
25 
26 #define RSND_BASE_MAX	4
27 
28 /*
29  * flags
30  *
31  * 0xAB000000
32  *
33  * A : clock sharing settings
34  * B : SSI direction
35  */
36 #define RSND_SSI_CLK_PIN_SHARE		(1 << 31)
37 #define RSND_SSI_NO_BUSIF		(1 << 30) /* SSI+DMA without BUSIF */
38 
39 #define RSND_SSI(_dma_id, _irq, _flags)		\
40 { .dma_id = _dma_id, .irq = _irq, .flags = _flags }
41 #define RSND_SSI_UNUSED \
42 { .dma_id = -1, .irq = -1, .flags = 0 }
43 
44 struct rsnd_ssi_platform_info {
45 	int dma_id;
46 	int irq;
47 	u32 flags;
48 };
49 
50 #define RSND_SRC(rate, _dma_id)						\
51 { .convert_rate = rate, .dma_id = _dma_id, }
52 #define RSND_SRC_UNUSED				\
53 { .convert_rate = 0, .dma_id = -1, }
54 
55 struct rsnd_src_platform_info {
56 	u32 convert_rate; /* sampling rate convert */
57 	int dma_id; /* for Gen2 SCU */
58 	int irq;
59 };
60 
61 /*
62  * flags
63  */
64 struct rsnd_dvc_platform_info {
65 	u32 flags;
66 };
67 
68 struct rsnd_dai_path_info {
69 	struct rsnd_ssi_platform_info *ssi;
70 	struct rsnd_src_platform_info *src;
71 	struct rsnd_dvc_platform_info *dvc;
72 };
73 
74 struct rsnd_dai_platform_info {
75 	struct rsnd_dai_path_info playback;
76 	struct rsnd_dai_path_info capture;
77 };
78 
79 /*
80  * flags
81  *
82  * 0x0000000A
83  *
84  * A : generation
85  */
86 #define RSND_GEN_MASK	(0xF << 0)
87 #define RSND_GEN1	(1 << 0) /* fixme */
88 #define RSND_GEN2	(2 << 0) /* fixme */
89 
90 struct rcar_snd_info {
91 	u32 flags;
92 	struct rsnd_ssi_platform_info *ssi_info;
93 	int ssi_info_nr;
94 	struct rsnd_src_platform_info *src_info;
95 	int src_info_nr;
96 	struct rsnd_dvc_platform_info *dvc_info;
97 	int dvc_info_nr;
98 	struct rsnd_dai_platform_info *dai_info;
99 	int dai_info_nr;
100 	int (*start)(int id);
101 	int (*stop)(int id);
102 };
103 
104 #endif
105