sound/soc/bcm/cygnus-ssp.h

   1 /*
   2  * Copyright (C) 2014-2015 Broadcom Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation version 2.
   7  *
   8  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
   9  * kind, whether express or implied; without even the implied warranty
  10  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13 #ifndef __CYGNUS_SSP_H__
  14 #define __CYGNUS_SSP_H__
  15
  16 #define CYGNUS_TDM_DAI_MAX_SLOTS 16
  17
  18 #define CYGNUS_MAX_PLAYBACK_PORTS 4
  19 #define CYGNUS_MAX_CAPTURE_PORTS 3
  20 #define CYGNUS_MAX_I2S_PORTS 3
  21 #define CYGNUS_MAX_PORTS  CYGNUS_MAX_PLAYBACK_PORTS
  22 #define CYGNUS_AUIDO_MAX_NUM_CLKS 3
  23
  24 #define CYGNUS_SSP_FRAMEBITS_DIV 1
  25
  26 #define CYGNUS_SSPMODE_I2S 0
  27 #define CYGNUS_SSPMODE_TDM 1
  28 #define CYGNUS_SSPMODE_UNKNOWN -1
  29
  30 #define CYGNUS_SSP_CLKSRC_PLL      0
  31
  32 /* Max string length of our dt property names */
  33 #define PROP_LEN_MAX 40
  34
  35 struct ringbuf_regs {
  36         unsigned rdaddr;
  37         unsigned wraddr;
  38         unsigned baseaddr;
  39         unsigned endaddr;
  40         unsigned fmark;   /* freemark for play, fullmark for caputure */
  41         unsigned period_bytes;
  42         unsigned buf_size;
  43 };
  44
  45 #define RINGBUF_REG_PLAYBACK(num) ((struct ringbuf_regs) { \
  46         .rdaddr = SRC_RBUF_ ##num## _RDADDR_OFFSET, \
  47         .wraddr = SRC_RBUF_ ##num## _WRADDR_OFFSET, \
  48         .baseaddr = SRC_RBUF_ ##num## _BASEADDR_OFFSET, \
  49         .endaddr = SRC_RBUF_ ##num## _ENDADDR_OFFSET, \
  50         .fmark = SRC_RBUF_ ##num## _FREE_MARK_OFFSET, \
  51         .period_bytes = 0, \
  52         .buf_size = 0, \
  53 })
  54
  55 #define RINGBUF_REG_CAPTURE(num) ((struct ringbuf_regs)  { \
  56         .rdaddr = DST_RBUF_ ##num## _RDADDR_OFFSET, \
  57         .wraddr = DST_RBUF_ ##num## _WRADDR_OFFSET, \
  58         .baseaddr = DST_RBUF_ ##num## _BASEADDR_OFFSET, \
  59         .endaddr = DST_RBUF_ ##num## _ENDADDR_OFFSET, \
  60         .fmark = DST_RBUF_ ##num## _FULL_MARK_OFFSET, \
  61         .period_bytes = 0, \
  62         .buf_size = 0, \
  63 })
  64
  65 enum cygnus_audio_port_type {
  66         PORT_TDM,
  67         PORT_SPDIF,
  68 };
  69
  70 struct cygnus_ssp_regs {
  71         u32 i2s_stream_cfg;
  72         u32 i2s_cfg;
  73         u32 i2s_cap_stream_cfg;
  74         u32 i2s_cap_cfg;
  75         u32 i2s_mclk_cfg;
  76
  77         u32 bf_destch_ctrl;
  78         u32 bf_destch_cfg;
  79         u32 bf_sourcech_ctrl;
  80         u32 bf_sourcech_cfg;
  81         u32 bf_sourcech_grp;
  82 };
  83
  84 struct cygnus_track_clk {
  85         bool cap_en;
  86         bool play_en;
  87         bool cap_clk_en;
  88         bool play_clk_en;
  89 };
  90
  91 struct cygnus_aio_port {
  92         int portnum;
  93         int mode;
  94         bool is_slave;
  95         int streams_on;   /* will be 0 if both capture and play are off */
  96         int fsync_width;
  97         int port_type;
  98
  99         u32 mclk;
 100         u32 lrclk;
 101         u32 bit_per_frame;
 102         u32 pll_clk_num;
 103
 104         struct cygnus_audio *cygaud;
 105         struct cygnus_ssp_regs regs;
 106
 107         struct ringbuf_regs play_rb_regs;
 108         struct ringbuf_regs capture_rb_regs;
 109
 110         struct snd_pcm_substream *play_stream;
 111         struct snd_pcm_substream *capture_stream;
 112
 113         struct cygnus_track_clk clk_trace;
 114 };
 115
 116
 117 struct cygnus_audio {
 118         struct cygnus_aio_port  portinfo[CYGNUS_MAX_PORTS];
 119
 120         int irq_num;
 121         void __iomem *audio;
 122         struct device *dev;
 123         void __iomem *i2s_in;
 124
 125         struct clk *audio_clk[CYGNUS_AUIDO_MAX_NUM_CLKS];
 126         int active_ports;
 127         unsigned long vco_rate;
 128 };
 129
 130 extern int cygnus_ssp_get_mode(struct snd_soc_dai *cpu_dai);
 131 extern int cygnus_ssp_add_pll_tweak_controls(struct snd_soc_pcm_runtime *rtd);
 132 extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai,
 133                                                 int len);
 134 extern int cygnus_soc_platform_register(struct device *dev,
 135                                         struct cygnus_audio *cygaud);
 136 extern int cygnus_soc_platform_unregister(struct device *dev);
 137 extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai,
 138         int len);
 139 #endif