sound/soc/davinci/davinci-mcasp.h

   1 /*
   2  * ALSA SoC McASP Audio Layer for TI DAVINCI processor
   3  *
   4  * MCASP related definitions
   5  *
   6  * Author: Nirmal Pandey <n-pandey@ti.com>,
   7  *         Suresh Rajashekara <suresh.r@ti.com>
   8  *         Steve Chen <schen@.mvista.com>
   9  *
  10  * Copyright:   (C) 2009 MontaVista Software, Inc., <source@mvista.com>
  11  * Copyright:   (C) 2009  Texas Instruments, India
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License version 2 as
  15  * published by the Free Software Foundation.
  16  */
  17
  18 #ifndef DAVINCI_MCASP_H
  19 #define DAVINCI_MCASP_H
  20
  21 #include <linux/io.h>
  22 #include <mach/asp.h>
  23 #include "davinci-pcm.h"
  24
  25 extern struct snd_soc_dai davinci_mcasp_dai[];
  26
  27 #define DAVINCI_MCASP_RATES     SNDRV_PCM_RATE_8000_96000
  28 #define DAVINCI_MCASP_I2S_DAI   0
  29 #define DAVINCI_MCASP_DIT_DAI   1
  30
  31 enum {
  32         DAVINCI_AUDIO_WORD_8 = 0,
  33         DAVINCI_AUDIO_WORD_12,
  34         DAVINCI_AUDIO_WORD_16,
  35         DAVINCI_AUDIO_WORD_20,
  36         DAVINCI_AUDIO_WORD_24,
  37         DAVINCI_AUDIO_WORD_32,
  38         DAVINCI_AUDIO_WORD_28,  /* This is only valid for McASP */
  39 };
  40
  41 struct davinci_audio_dev {
  42         /*
  43          * dma_params must be first because rtd->dai->cpu_dai->private_data
  44          * is cast to a pointer of an array of struct davinci_pcm_dma_params in
  45          * davinci_pcm_open.
  46          */
  47         struct davinci_pcm_dma_params dma_params[2];
  48         void __iomem *base;
  49         int sample_rate;
  50         struct clk *clk;
  51         unsigned int codec_fmt;
  52
  53         /* McASP specific data */
  54         int     tdm_slots;
  55         u8      op_mode;
  56         u8      num_serializer;
  57         u8      *serial_dir;
  58         u8      version;
  59
  60         /* McASP FIFO related */
  61         u8      txnumevt;
  62         u8      rxnumevt;
  63 };
  64
  65 #endif  /* DAVINCI_MCASP_H */