sound/soc/mid-x86/sst_platform.h

   1 /*
   2  *  sst_platform.h - Intel MID Platform driver header file
   3  *
   4  *  Copyright (C) 2010 Intel Corp
   5  *  Author: Vinod Koul <vinod.koul@intel.com>
   6  *  Author: Harsha Priya <priya.harsha@intel.com>
   7  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; version 2 of the License.
  12  *
  13  *  This program is distributed in the hope that it will be useful, but
  14  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *  General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License along
  19  *  with this program; if not, write to the Free Software Foundation, Inc.,
  20  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  21  *
  22  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  23  *
  24  *
  25  */
  26
  27 #ifndef __SST_PLATFORMDRV_H__
  28 #define __SST_PLATFORMDRV_H__
  29
  30 #define SST_MONO                1
  31 #define SST_STEREO              2
  32 #define SST_MAX_CAP             5
  33
  34 #define SST_MIN_RATE            8000
  35 #define SST_MAX_RATE            48000
  36 #define SST_MIN_CHANNEL         1
  37 #define SST_MAX_CHANNEL         5
  38 #define SST_MAX_BUFFER          (800*1024)
  39 #define SST_MIN_BUFFER          (800*1024)
  40 #define SST_MIN_PERIOD_BYTES    32
  41 #define SST_MAX_PERIOD_BYTES    SST_MAX_BUFFER
  42 #define SST_MIN_PERIODS         2
  43 #define SST_MAX_PERIODS         (1024*2)
  44 #define SST_FIFO_SIZE           0
  45 #define SST_CODEC_TYPE_PCM      1
  46
  47 struct pcm_stream_info {
  48         int str_id;
  49         void *mad_substream;
  50         void (*period_elapsed) (void *mad_substream);
  51         unsigned long long buffer_ptr;
  52         int sfreq;
  53 };
  54
  55 enum sst_drv_status {
  56         SST_PLATFORM_INIT = 1,
  57         SST_PLATFORM_STARTED,
  58         SST_PLATFORM_RUNNING,
  59         SST_PLATFORM_PAUSED,
  60         SST_PLATFORM_DROPPED,
  61 };
  62
  63 enum sst_controls {
  64         SST_SND_ALLOC =                 0x00,
  65         SST_SND_PAUSE =                 0x01,
  66         SST_SND_RESUME =                0x02,
  67         SST_SND_DROP =                  0x03,
  68         SST_SND_FREE =                  0x04,
  69         SST_SND_BUFFER_POINTER =        0x05,
  70         SST_SND_STREAM_INIT =           0x06,
  71         SST_SND_START    =              0x07,
  72         SST_MAX_CONTROLS =              0x07,
  73 };
  74
  75 enum sst_stream_ops {
  76         STREAM_OPS_PLAYBACK = 0,
  77         STREAM_OPS_CAPTURE,
  78 };
  79
  80 enum sst_audio_device_type {
  81         SND_SST_DEVICE_HEADSET = 1,
  82         SND_SST_DEVICE_IHF,
  83         SND_SST_DEVICE_VIBRA,
  84         SND_SST_DEVICE_HAPTIC,
  85         SND_SST_DEVICE_CAPTURE,
  86 };
  87
  88 /* PCM Parameters */
  89 struct sst_pcm_params {
  90         u16 codec;      /* codec type */
  91         u8 num_chan;    /* 1=Mono, 2=Stereo */
  92         u8 pcm_wd_sz;   /* 16/24 - bit*/
  93         u32 reserved;   /* Bitrate in bits per second */
  94         u32 sfreq;      /* Sampling rate in Hz */
  95         u32 ring_buffer_size;
  96         u32 period_count;       /* period elapsed in samples*/
  97         u32 ring_buffer_addr;
  98 };
  99
 100 struct sst_stream_params {
 101         u32 result;
 102         u32 stream_id;
 103         u8 codec;
 104         u8 ops;
 105         u8 stream_type;
 106         u8 device_type;
 107         struct sst_pcm_params sparams;
 108 };
 109
 110 struct sst_ops {
 111         int (*open) (struct sst_stream_params *str_param);
 112         int (*device_control) (int cmd, void *arg);
 113         int (*close) (unsigned int str_id);
 114 };
 115
 116 struct sst_runtime_stream {
 117         int     stream_status;
 118         struct pcm_stream_info stream_info;
 119         struct sst_ops *ops;
 120         spinlock_t      status_lock;
 121 };
 122
 123 struct sst_device {
 124         char *name;
 125         struct device *dev;
 126         struct sst_ops *ops;
 127 };
 128
 129 int sst_register_dsp(struct sst_device *sst);
 130 int sst_unregister_dsp(struct sst_device *sst);
 131 #endif