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
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