LXR linux/sound/soc/mid-x86/sst

   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
  47struct 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
  55enum 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
  63enum 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
  75enum sst_stream_ops {
  76        STREAM_OPS_PLAYBACK = 0,
  77        STREAM_OPS_CAPTURE,
  78};
  79
  80enum 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 */
  89struct 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
 100struct 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
 110struct 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
 116struct 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
 123struct sst_device {
 124        char *name;
 125        struct device *dev;
 126        struct sst_ops *ops;
 127};
 128
 129int sst_register_dsp(struct sst_device *sst);
 130int sst_unregister_dsp(struct sst_device *sst);
 131#endif
 132