sound/soc/sh/siu.h

   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 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 */