sound/soc/bcm/cygnus-ssp.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /* Copyright (C) 2014-2015 Broadcom Corporation */
   3 #ifndef __CYGNUS_SSP_H__
   4 #define __CYGNUS_SSP_H__
   5
   6 #define CYGNUS_TDM_DAI_MAX_SLOTS 16
   7
   8 #define CYGNUS_MAX_PLAYBACK_PORTS 4
   9 #define CYGNUS_MAX_CAPTURE_PORTS 3
  10 #define CYGNUS_MAX_I2S_PORTS 3
  11 #define CYGNUS_MAX_PORTS  CYGNUS_MAX_PLAYBACK_PORTS
  12 #define CYGNUS_AUIDO_MAX_NUM_CLKS 3
  13
  14 #define CYGNUS_SSP_FRAMEBITS_DIV 1
  15
  16 #define CYGNUS_SSPMODE_I2S 0
  17 #define CYGNUS_SSPMODE_TDM 1
  18 #define CYGNUS_SSPMODE_UNKNOWN -1
  19
  20 #define CYGNUS_SSP_CLKSRC_PLL      0
  21
  22 /* Max string length of our dt property names */
  23 #define PROP_LEN_MAX 40
  24
  25 struct ringbuf_regs {
  26         unsigned rdaddr;
  27         unsigned wraddr;
  28         unsigned baseaddr;
  29         unsigned endaddr;
  30         unsigned fmark;   /* freemark for play, fullmark for caputure */
  31         unsigned period_bytes;
  32         unsigned buf_size;
  33 };
  34
  35 #define RINGBUF_REG_PLAYBACK(num) ((struct ringbuf_regs) { \
  36         .rdaddr = SRC_RBUF_ ##num## _RDADDR_OFFSET, \
  37         .wraddr = SRC_RBUF_ ##num## _WRADDR_OFFSET, \
  38         .baseaddr = SRC_RBUF_ ##num## _BASEADDR_OFFSET, \
  39         .endaddr = SRC_RBUF_ ##num## _ENDADDR_OFFSET, \
  40         .fmark = SRC_RBUF_ ##num## _FREE_MARK_OFFSET, \
  41         .period_bytes = 0, \
  42         .buf_size = 0, \
  43 })
  44
  45 #define RINGBUF_REG_CAPTURE(num) ((struct ringbuf_regs)  { \
  46         .rdaddr = DST_RBUF_ ##num## _RDADDR_OFFSET, \
  47         .wraddr = DST_RBUF_ ##num## _WRADDR_OFFSET, \
  48         .baseaddr = DST_RBUF_ ##num## _BASEADDR_OFFSET, \
  49         .endaddr = DST_RBUF_ ##num## _ENDADDR_OFFSET, \
  50         .fmark = DST_RBUF_ ##num## _FULL_MARK_OFFSET, \
  51         .period_bytes = 0, \
  52         .buf_size = 0, \
  53 })
  54
  55 enum cygnus_audio_port_type {
  56         PORT_TDM,
  57         PORT_SPDIF,
  58 };
  59
  60 struct cygnus_ssp_regs {
  61         u32 i2s_stream_cfg;
  62         u32 i2s_cfg;
  63         u32 i2s_cap_stream_cfg;
  64         u32 i2s_cap_cfg;
  65         u32 i2s_mclk_cfg;
  66
  67         u32 bf_destch_ctrl;
  68         u32 bf_destch_cfg;
  69         u32 bf_sourcech_ctrl;
  70         u32 bf_sourcech_cfg;
  71         u32 bf_sourcech_grp;
  72 };
  73
  74 struct cygnus_track_clk {
  75         bool cap_en;
  76         bool play_en;
  77         bool cap_clk_en;
  78         bool play_clk_en;
  79 };
  80
  81 struct cygnus_aio_port {
  82         int portnum;
  83         int mode;
  84         bool is_slave;
  85         int streams_on;   /* will be 0 if both capture and play are off */
  86         int fsync_width;
  87         int port_type;
  88
  89         u32 mclk;
  90         u32 lrclk;
  91         u32 bit_per_frame;
  92         u32 pll_clk_num;
  93
  94         struct cygnus_audio *cygaud;
  95         struct cygnus_ssp_regs regs;
  96
  97         struct ringbuf_regs play_rb_regs;
  98         struct ringbuf_regs capture_rb_regs;
  99
 100         struct snd_pcm_substream *play_stream;
 101         struct snd_pcm_substream *capture_stream;
 102
 103         struct cygnus_track_clk clk_trace;
 104 };
 105
 106
 107 struct cygnus_audio {
 108         struct cygnus_aio_port  portinfo[CYGNUS_MAX_PORTS];
 109
 110         int irq_num;
 111         void __iomem *audio;
 112         struct device *dev;
 113         void __iomem *i2s_in;
 114
 115         struct clk *audio_clk[CYGNUS_AUIDO_MAX_NUM_CLKS];
 116         int active_ports;
 117         unsigned long vco_rate;
 118 };
 119
 120 extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai,
 121                                                 int len);
 122 extern int cygnus_soc_platform_register(struct device *dev,
 123                                         struct cygnus_audio *cygaud);
 124 extern int cygnus_soc_platform_unregister(struct device *dev);
 125 extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai,
 126         int len);
 127 #endif