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
33struct 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
42struct 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 */
73enum {
74 SIU_PORT_A,
75 SIU_PORT_B,
76 SIU_PORT_NUM,
77};
78
79/* SIU clock configuration */
80enum {
81 SIU_CLKA_PLL,
82 SIU_CLKA_EXT,
83 SIU_CLKB_PLL,
84 SIU_CLKB_EXT
85};
86
87struct device;
88struct 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
98struct 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
115struct 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
124extern struct siu_port *siu_ports[SIU_PORT_NUM];
125
126static 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 */
134static inline void siu_write32(u32 __iomem *addr, u32 val)
135{
136 __raw_writel(val, addr);
137}
138
139static 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
172extern const struct snd_soc_component_driver siu_component;
173extern struct siu_info *siu_i2s_data;
174
175int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card);
176void siu_free_port(struct siu_port *port_info);
177
178#endif
179
180#endif /* SIU_H */
181

source code of linux/sound/soc/sh/siu.h