sound/soc/sh/siu.h

   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
  75 #include <asm/dmaengine.h>
  76
  77 #include <sound/core.h>
  78 #include <sound/pcm.h>
  79 #include <sound/soc-dai.h>
  80
  81 #define SIU_PERIOD_BYTES_MAX    8192            /* DMA transfer/period size */
  82 #define SIU_PERIOD_BYTES_MIN    256             /* DMA transfer/period size */
  83 #define SIU_PERIODS_MAX         64              /* Max periods in buffer */
  84 #define SIU_PERIODS_MIN         4               /* Min periods in buffer */
  85 #define SIU_BUFFER_BYTES_MAX    (SIU_PERIOD_BYTES_MAX * SIU_PERIODS_MAX)
  86
  87 /* SIU ports: only one can be used at a time */
  88 enum {
  89         SIU_PORT_A,
  90         SIU_PORT_B,
  91         SIU_PORT_NUM,
  92 };
  93
  94 /* SIU clock configuration */
  95 enum {
  96         SIU_CLKA_PLL,
  97         SIU_CLKA_EXT,
  98         SIU_CLKB_PLL,
  99         SIU_CLKB_EXT
 100 };
 101
 102 struct siu_info {
 103         int                     port_id;
 104         u32 __iomem             *pram;
 105         u32 __iomem             *xram;
 106         u32 __iomem             *yram;
 107         u32 __iomem             *reg;
 108         struct siu_firmware     fw;
 109 };
 110
 111 struct siu_stream {
 112         struct tasklet_struct           tasklet;
 113         struct snd_pcm_substream        *substream;
 114         snd_pcm_format_t                format;
 115         size_t                          buf_bytes;
 116         size_t                          period_bytes;
 117         int                             cur_period;     /* Period currently in dma */
 118         u32                             volume;
 119         snd_pcm_sframes_t               xfer_cnt;       /* Number of frames */
 120         u8                              rw_flg;         /* transfer status */
 121         /* DMA status */
 122         struct dma_chan                 *chan;          /* DMA channel */
 123         struct dma_async_tx_descriptor  *tx_desc;
 124         dma_cookie_t                    cookie;
 125         struct sh_dmae_slave            param;
 126 };
 127
 128 struct siu_port {
 129         unsigned long           play_cap;       /* Used to track full duplex */
 130         struct snd_pcm          *pcm;
 131         struct siu_stream       playback;
 132         struct siu_stream       capture;
 133         u32                     stfifo;         /* STFIFO value from firmware */
 134         u32                     trdat;          /* TRDAT value from firmware */
 135 };
 136
 137 extern struct siu_port *siu_ports[SIU_PORT_NUM];
 138
 139 static inline struct siu_port *siu_port_info(struct snd_pcm_substream *substream)
 140 {
 141         struct platform_device *pdev =
 142                 to_platform_device(substream->pcm->card->dev);
 143         return siu_ports[pdev->id];
 144 }
 145
 146 /* Register access */
 147 static inline void siu_write32(u32 __iomem *addr, u32 val)
 148 {
 149         __raw_writel(val, addr);
 150 }
 151
 152 static inline u32 siu_read32(u32 __iomem *addr)
 153 {
 154         return __raw_readl(addr);
 155 }
 156
 157 /* SIU registers */
 158 #define SIU_IFCTL       (0x000 / sizeof(u32))
 159 #define SIU_SRCTL       (0x004 / sizeof(u32))
 160 #define SIU_SFORM       (0x008 / sizeof(u32))
 161 #define SIU_CKCTL       (0x00c / sizeof(u32))
 162 #define SIU_TRDAT       (0x010 / sizeof(u32))
 163 #define SIU_STFIFO      (0x014 / sizeof(u32))
 164 #define SIU_DPAK        (0x01c / sizeof(u32))
 165 #define SIU_CKREV       (0x020 / sizeof(u32))
 166 #define SIU_EVNTC       (0x028 / sizeof(u32))
 167 #define SIU_SBCTL       (0x040 / sizeof(u32))
 168 #define SIU_SBPSET      (0x044 / sizeof(u32))
 169 #define SIU_SBFSTS      (0x068 / sizeof(u32))
 170 #define SIU_SBDVCA      (0x06c / sizeof(u32))
 171 #define SIU_SBDVCB      (0x070 / sizeof(u32))
 172 #define SIU_SBACTIV     (0x074 / sizeof(u32))
 173 #define SIU_DMAIA       (0x090 / sizeof(u32))
 174 #define SIU_DMAIB       (0x094 / sizeof(u32))
 175 #define SIU_DMAOA       (0x098 / sizeof(u32))
 176 #define SIU_DMAOB       (0x09c / sizeof(u32))
 177 #define SIU_DMAML       (0x0a0 / sizeof(u32))
 178 #define SIU_SPSTS       (0x0cc / sizeof(u32))
 179 #define SIU_SPCTL       (0x0d0 / sizeof(u32))
 180 #define SIU_BRGASEL     (0x100 / sizeof(u32))
 181 #define SIU_BRRA        (0x104 / sizeof(u32))
 182 #define SIU_BRGBSEL     (0x108 / sizeof(u32))
 183 #define SIU_BRRB        (0x10c / sizeof(u32))
 184
 185 extern struct snd_soc_platform siu_platform;
 186 extern struct snd_soc_dai siu_i2s_dai;
 187
 188 int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card);
 189 void siu_free_port(struct siu_port *port_info);
 190
 191 #endif
 192
 193 #endif /* SIU_H */