1 /*
2 * siu.h - ALSA SoC driver for Renesas SH7343, SH7722 SIU peripheral.
3 *
4 * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
5 * Copyright (C) 2006 Carlos Munoz <carlos@kenati.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 as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22 #ifndef SIU_H
23 #define SIU_H
24
25 /* Common kernel and user-space firmware-building defines and types */
26
27 #define YRAM0_SIZE (0x0040 / 4) /* 16 */
28 #define YRAM1_SIZE (0x0080 / 4) /* 32 */
29 #define YRAM2_SIZE (0x0040 / 4) /* 16 */
30 #define YRAM3_SIZE (0x0080 / 4) /* 32 */
31 #define YRAM4_SIZE (0x0080 / 4) /* 32 */
32 #define YRAM_DEF_SIZE (YRAM0_SIZE + YRAM1_SIZE + YRAM2_SIZE + \
33 YRAM3_SIZE + YRAM4_SIZE)
34 #define YRAM_FIR_SIZE (0x0400 / 4) /* 256 */
35 #define YRAM_IIR_SIZE (0x0200 / 4) /* 128 */
36
37 #define XRAM0_SIZE (0x0400 / 4) /* 256 */
38 #define XRAM1_SIZE (0x0200 / 4) /* 128 */
39 #define XRAM2_SIZE (0x0200 / 4) /* 128 */
40
41 /* PRAM program array size */
42 #define PRAM0_SIZE (0x0100 / 4) /* 64 */
43 #define PRAM1_SIZE ((0x2000 - 0x0100) / 4) /* 1984 */
44
45 #include <linux/types.h>
46
47 struct siu_spb_param {
48 __u32 ab1a; /* input FIFO address */
49 __u32 ab0a; /* output FIFO address */
50 __u32 dir; /* 0=the ather except CPUOUTPUT, 1=CPUINPUT */
51 __u32 event; /* SPB program starting conditions */
52 __u32 stfifo; /* STFIFO register setting value */
53 __u32 trdat; /* TRDAT register setting value */
54 };
55
56 struct siu_firmware {
57 __u32 yram_fir_coeff[YRAM_FIR_SIZE];
58 __u32 pram0[PRAM0_SIZE];
59 __u32 pram1[PRAM1_SIZE];
60 __u32 yram0[YRAM0_SIZE];
61 __u32 yram1[YRAM1_SIZE];
62 __u32 yram2[YRAM2_SIZE];
63 __u32 yram3[YRAM3_SIZE];
64 __u32 yram4[YRAM4_SIZE];
65 __u32 spbpar_num;
66 struct siu_spb_param spbpar[32];
67 };
68
69 #ifdef __KERNEL__
70
71 #include <linux/dmaengine.h>
72 #include <linux/interrupt.h>
73 #include <linux/io.h>
74 #include <linux/sh_dma.h>
75
76 #include <sound/core.h>
77 #include <sound/pcm.h>
78 #include <sound/soc.h>
79
80 #define SIU_PERIOD_BYTES_MAX 8192 /* DMA transfer/period size */
81 #define SIU_PERIOD_BYTES_MIN 256 /* DMA transfer/period size */
82 #define SIU_PERIODS_MAX 64 /* Max periods in buffer */
83 #define SIU_PERIODS_MIN 4 /* Min periods in buffer */
84 #define SIU_BUFFER_BYTES_MAX (SIU_PERIOD_BYTES_MAX * SIU_PERIODS_MAX)
85
86 /* SIU ports: only one can be used at a time */
87 enum {
88 SIU_PORT_A,
89 SIU_PORT_B,
90 SIU_PORT_NUM,
91 };
92
93 /* SIU clock configuration */
94 enum {
95 SIU_CLKA_PLL,
96 SIU_CLKA_EXT,
97 SIU_CLKB_PLL,
98 SIU_CLKB_EXT
99 };
100
101 struct device;
102 struct siu_info {
103 struct device *dev;
104 int port_id;
105 u32 __iomem *pram;
106 u32 __iomem *xram;
107 u32 __iomem *yram;
108 u32 __iomem *reg;
109 struct siu_firmware fw;
110 };
111
112 struct siu_stream {
113 struct tasklet_struct tasklet;
114 struct snd_pcm_substream *substream;
115 snd_pcm_format_t format;
116 size_t buf_bytes;
117 size_t period_bytes;
118 int cur_period; /* Period currently in dma */
119 u32 volume;
120 snd_pcm_sframes_t xfer_cnt; /* Number of frames */
121 u8 rw_flg; /* transfer status */
122 /* DMA status */
123 struct dma_chan *chan; /* DMA channel */
124 struct dma_async_tx_descriptor *tx_desc;
125 dma_cookie_t cookie;
126 struct sh_dmae_slave param;
127 };
128
129 struct siu_port {
130 unsigned long play_cap; /* Used to track full duplex */
131 struct snd_pcm *pcm;
132 struct siu_stream playback;
133 struct siu_stream capture;
134 u32 stfifo; /* STFIFO value from firmware */
135 u32 trdat; /* TRDAT value from firmware */
136 };
137
138 extern struct siu_port *siu_ports[SIU_PORT_NUM];
139
siu_port_info(struct snd_pcm_substream * substream)140 static inline struct siu_port *siu_port_info(struct snd_pcm_substream *substream)
141 {
142 struct platform_device *pdev =
143 to_platform_device(substream->pcm->card->dev);
144 return siu_ports[pdev->id];
145 }
146
147 /* Register access */
siu_write32(u32 __iomem * addr,u32 val)148 static inline void siu_write32(u32 __iomem *addr, u32 val)
149 {
150 __raw_writel(val, addr);
151 }
152
siu_read32(u32 __iomem * addr)153 static inline u32 siu_read32(u32 __iomem *addr)
154 {
155 return __raw_readl(addr);
156 }
157
158 /* SIU registers */
159 #define SIU_IFCTL (0x000 / sizeof(u32))
160 #define SIU_SRCTL (0x004 / sizeof(u32))
161 #define SIU_SFORM (0x008 / sizeof(u32))
162 #define SIU_CKCTL (0x00c / sizeof(u32))
163 #define SIU_TRDAT (0x010 / sizeof(u32))
164 #define SIU_STFIFO (0x014 / sizeof(u32))
165 #define SIU_DPAK (0x01c / sizeof(u32))
166 #define SIU_CKREV (0x020 / sizeof(u32))
167 #define SIU_EVNTC (0x028 / sizeof(u32))
168 #define SIU_SBCTL (0x040 / sizeof(u32))
169 #define SIU_SBPSET (0x044 / sizeof(u32))
170 #define SIU_SBFSTS (0x068 / sizeof(u32))
171 #define SIU_SBDVCA (0x06c / sizeof(u32))
172 #define SIU_SBDVCB (0x070 / sizeof(u32))
173 #define SIU_SBACTIV (0x074 / sizeof(u32))
174 #define SIU_DMAIA (0x090 / sizeof(u32))
175 #define SIU_DMAIB (0x094 / sizeof(u32))
176 #define SIU_DMAOA (0x098 / sizeof(u32))
177 #define SIU_DMAOB (0x09c / sizeof(u32))
178 #define SIU_DMAML (0x0a0 / sizeof(u32))
179 #define SIU_SPSTS (0x0cc / sizeof(u32))
180 #define SIU_SPCTL (0x0d0 / sizeof(u32))
181 #define SIU_BRGASEL (0x100 / sizeof(u32))
182 #define SIU_BRRA (0x104 / sizeof(u32))
183 #define SIU_BRGBSEL (0x108 / sizeof(u32))
184 #define SIU_BRRB (0x10c / sizeof(u32))
185
186 extern struct snd_soc_platform_driver siu_platform;
187 extern struct siu_info *siu_i2s_data;
188
189 int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card);
190 void siu_free_port(struct siu_port *port_info);
191
192 #endif
193
194 #endif /* SIU_H */
195