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TOMOYO Linux Cross Reference
Linux/sound/soc/sh/siu.h

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  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 
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 */
148 static inline void siu_write32(u32 __iomem *addr, u32 val)
149 {
150         __raw_writel(val, addr);
151 }
152 
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 

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