1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | // |
3 | // siu.h - ALSA SoC driver for Renesas SH7343, SH7722 SIU peripheral. |
4 | // |
5 | // Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> |
6 | // Copyright (C) 2006 Carlos Munoz <carlos@kenati.com> |
7 | |
8 | #ifndef SIU_H |
9 | #define SIU_H |
10 | |
11 | /* Common kernel and user-space firmware-building defines and types */ |
12 | |
13 | #define YRAM0_SIZE (0x0040 / 4) /* 16 */ |
14 | #define YRAM1_SIZE (0x0080 / 4) /* 32 */ |
15 | #define YRAM2_SIZE (0x0040 / 4) /* 16 */ |
16 | #define YRAM3_SIZE (0x0080 / 4) /* 32 */ |
17 | #define YRAM4_SIZE (0x0080 / 4) /* 32 */ |
18 | #define YRAM_DEF_SIZE (YRAM0_SIZE + YRAM1_SIZE + YRAM2_SIZE + \ |
19 | YRAM3_SIZE + YRAM4_SIZE) |
20 | #define YRAM_FIR_SIZE (0x0400 / 4) /* 256 */ |
21 | #define YRAM_IIR_SIZE (0x0200 / 4) /* 128 */ |
22 | |
23 | #define XRAM0_SIZE (0x0400 / 4) /* 256 */ |
24 | #define XRAM1_SIZE (0x0200 / 4) /* 128 */ |
25 | #define XRAM2_SIZE (0x0200 / 4) /* 128 */ |
26 | |
27 | /* PRAM program array size */ |
28 | #define PRAM0_SIZE (0x0100 / 4) /* 64 */ |
29 | #define PRAM1_SIZE ((0x2000 - 0x0100) / 4) /* 1984 */ |
30 | |
31 | #include <linux/types.h> |
32 | |
33 | struct siu_spb_param { |
34 | __u32 ab1a; /* input FIFO address */ |
35 | __u32 ab0a; /* output FIFO address */ |
36 | __u32 dir; /* 0=the ather except CPUOUTPUT, 1=CPUINPUT */ |
37 | __u32 event; /* SPB program starting conditions */ |
38 | __u32 stfifo; /* STFIFO register setting value */ |
39 | __u32 trdat; /* TRDAT register setting value */ |
40 | }; |
41 | |
42 | struct siu_firmware { |
43 | __u32 yram_fir_coeff[YRAM_FIR_SIZE]; |
44 | __u32 pram0[PRAM0_SIZE]; |
45 | __u32 pram1[PRAM1_SIZE]; |
46 | __u32 yram0[YRAM0_SIZE]; |
47 | __u32 yram1[YRAM1_SIZE]; |
48 | __u32 yram2[YRAM2_SIZE]; |
49 | __u32 yram3[YRAM3_SIZE]; |
50 | __u32 yram4[YRAM4_SIZE]; |
51 | __u32 spbpar_num; |
52 | struct siu_spb_param spbpar[32]; |
53 | }; |
54 | |
55 | #ifdef __KERNEL__ |
56 | |
57 | #include <linux/dmaengine.h> |
58 | #include <linux/interrupt.h> |
59 | #include <linux/io.h> |
60 | #include <linux/sh_dma.h> |
61 | |
62 | #include <sound/core.h> |
63 | #include <sound/pcm.h> |
64 | #include <sound/soc.h> |
65 | |
66 | #define SIU_PERIOD_BYTES_MAX 8192 /* DMA transfer/period size */ |
67 | #define SIU_PERIOD_BYTES_MIN 256 /* DMA transfer/period size */ |
68 | #define SIU_PERIODS_MAX 64 /* Max periods in buffer */ |
69 | #define SIU_PERIODS_MIN 4 /* Min periods in buffer */ |
70 | #define SIU_BUFFER_BYTES_MAX (SIU_PERIOD_BYTES_MAX * SIU_PERIODS_MAX) |
71 | |
72 | /* SIU ports: only one can be used at a time */ |
73 | enum { |
74 | SIU_PORT_A, |
75 | SIU_PORT_B, |
76 | SIU_PORT_NUM, |
77 | }; |
78 | |
79 | /* SIU clock configuration */ |
80 | enum { |
81 | SIU_CLKA_PLL, |
82 | SIU_CLKA_EXT, |
83 | SIU_CLKB_PLL, |
84 | SIU_CLKB_EXT |
85 | }; |
86 | |
87 | struct device; |
88 | struct siu_info { |
89 | struct device *dev; |
90 | int port_id; |
91 | u32 __iomem *pram; |
92 | u32 __iomem *xram; |
93 | u32 __iomem *yram; |
94 | u32 __iomem *reg; |
95 | struct siu_firmware fw; |
96 | }; |
97 | |
98 | struct siu_stream { |
99 | struct work_struct work; |
100 | struct snd_pcm_substream *substream; |
101 | snd_pcm_format_t format; |
102 | size_t buf_bytes; |
103 | size_t period_bytes; |
104 | int cur_period; /* Period currently in dma */ |
105 | u32 volume; |
106 | snd_pcm_sframes_t xfer_cnt; /* Number of frames */ |
107 | u8 rw_flg; /* transfer status */ |
108 | /* DMA status */ |
109 | struct dma_chan *chan; /* DMA channel */ |
110 | struct dma_async_tx_descriptor *tx_desc; |
111 | dma_cookie_t cookie; |
112 | struct sh_dmae_slave param; |
113 | }; |
114 | |
115 | struct siu_port { |
116 | unsigned long play_cap; /* Used to track full duplex */ |
117 | struct snd_pcm *pcm; |
118 | struct siu_stream playback; |
119 | struct siu_stream capture; |
120 | u32 stfifo; /* STFIFO value from firmware */ |
121 | u32 trdat; /* TRDAT value from firmware */ |
122 | }; |
123 | |
124 | extern struct siu_port *siu_ports[SIU_PORT_NUM]; |
125 | |
126 | static inline struct siu_port *siu_port_info(struct snd_pcm_substream *substream) |
127 | { |
128 | struct platform_device *pdev = |
129 | to_platform_device(substream->pcm->card->dev); |
130 | return siu_ports[pdev->id]; |
131 | } |
132 | |
133 | /* Register access */ |
134 | static inline void siu_write32(u32 __iomem *addr, u32 val) |
135 | { |
136 | __raw_writel(val, addr); |
137 | } |
138 | |
139 | static inline u32 siu_read32(u32 __iomem *addr) |
140 | { |
141 | return __raw_readl(addr); |
142 | } |
143 | |
144 | /* SIU registers */ |
145 | #define SIU_IFCTL (0x000 / sizeof(u32)) |
146 | #define SIU_SRCTL (0x004 / sizeof(u32)) |
147 | #define SIU_SFORM (0x008 / sizeof(u32)) |
148 | #define SIU_CKCTL (0x00c / sizeof(u32)) |
149 | #define SIU_TRDAT (0x010 / sizeof(u32)) |
150 | #define SIU_STFIFO (0x014 / sizeof(u32)) |
151 | #define SIU_DPAK (0x01c / sizeof(u32)) |
152 | #define SIU_CKREV (0x020 / sizeof(u32)) |
153 | #define SIU_EVNTC (0x028 / sizeof(u32)) |
154 | #define SIU_SBCTL (0x040 / sizeof(u32)) |
155 | #define SIU_SBPSET (0x044 / sizeof(u32)) |
156 | #define SIU_SBFSTS (0x068 / sizeof(u32)) |
157 | #define SIU_SBDVCA (0x06c / sizeof(u32)) |
158 | #define SIU_SBDVCB (0x070 / sizeof(u32)) |
159 | #define SIU_SBACTIV (0x074 / sizeof(u32)) |
160 | #define SIU_DMAIA (0x090 / sizeof(u32)) |
161 | #define SIU_DMAIB (0x094 / sizeof(u32)) |
162 | #define SIU_DMAOA (0x098 / sizeof(u32)) |
163 | #define SIU_DMAOB (0x09c / sizeof(u32)) |
164 | #define SIU_DMAML (0x0a0 / sizeof(u32)) |
165 | #define SIU_SPSTS (0x0cc / sizeof(u32)) |
166 | #define SIU_SPCTL (0x0d0 / sizeof(u32)) |
167 | #define SIU_BRGASEL (0x100 / sizeof(u32)) |
168 | #define SIU_BRRA (0x104 / sizeof(u32)) |
169 | #define SIU_BRGBSEL (0x108 / sizeof(u32)) |
170 | #define SIU_BRRB (0x10c / sizeof(u32)) |
171 | |
172 | extern const struct snd_soc_component_driver siu_component; |
173 | extern struct siu_info *siu_i2s_data; |
174 | |
175 | int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card); |
176 | void siu_free_port(struct siu_port *port_info); |
177 | |
178 | #endif |
179 | |
180 | #endif /* SIU_H */ |
181 | |