sound/soc/davinci/davinci-pcm.h

   1 /*
   2  * ALSA PCM interface for the TI DAVINCI processor
   3  *
   4  * Author:      Vladimir Barinov, <vbarinov@embeddedalley.com>
   5  * Copyright:   (C) 2007 MontaVista Software, Inc., <source@mvista.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #ifndef _DAVINCI_PCM_H
  13 #define _DAVINCI_PCM_H
  14
  15 #include <linux/genalloc.h>
  16 #include <linux/platform_data/davinci_asp.h>
  17 #include <linux/platform_data/edma.h>
  18
  19 struct davinci_pcm_dma_params {
  20         int channel;                    /* sync dma channel ID */
  21         unsigned short acnt;
  22         dma_addr_t dma_addr;            /* device physical address for DMA */
  23         unsigned sram_size;
  24         struct gen_pool *sram_pool;     /* SRAM gen_pool for ping pong */
  25         enum dma_event_q asp_chan_q;    /* event queue number for ASP channel */
  26         enum dma_event_q ram_chan_q;    /* event queue number for RAM channel */
  27         unsigned char data_type;        /* xfer data type */
  28         unsigned char convert_mono_stereo;
  29         unsigned int fifo_level;
  30 };
  31
  32 #if IS_ENABLED(CONFIG_SND_DAVINCI_SOC)
  33 int davinci_soc_platform_register(struct device *dev);
  34 #else
  35 static inline int davinci_soc_platform_register(struct device *dev)
  36 {
  37         return 0;
  38 }
  39 #endif /* CONFIG_SND_DAVINCI_SOC */
  40
  41 #endif