sys/arch/arm/xscale/pxa2x0_i2s.h

   1 /*      $NetBSD$        */
   2 /*      $OpenBSD: pxa2x0_i2s.h,v 1.3 2006/04/04 11:45:40 pascoe Exp $   */
   3
   4 /*
   5  * Copyright (c) 2005 Uwe Stuehler <uwe@bsdx.de>
   6  *
   7  * Permission to use, copy, modify, and distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 #ifndef _PXA2X0_I2S_H_
  21 #define _PXA2X0_I2S_H_
  22
  23 #include <machine/bus.h>
  24
  25 struct pxa2x0_i2s_dma;
  26 struct audio_params;
  27
  28 struct pxa2x0_i2s_softc {
  29         struct device sc_dev;
  30
  31         bus_space_tag_t sc_iot;
  32         bus_space_handle_t sc_ioh;
  33         bus_size_t sc_size;
  34         bus_dma_tag_t sc_dmat;
  35
  36         int sc_open;
  37         uint32_t sc_sadiv;
  38
  39         struct pxa2x0_i2s_dma *sc_dmas;
  40
  41         /* Dummy DMA segment which points to the I2S SADR */
  42         bus_dma_segment_t sc_dr;
  43
  44         /* PCM Output (Tx) state */
  45         struct pxa2x0_i2s_dma *sc_txdma;
  46         void (*sc_txfunc)(void *);
  47         void *sc_txarg;
  48
  49         /* PCM Input (Rx) state */
  50         struct pxa2x0_i2s_dma *sc_rxdma;
  51         void (*sc_rxfunc)(void *);
  52         void *sc_rxarg;
  53 };
  54
  55 void    pxa2x0_i2s_init(struct pxa2x0_i2s_softc *sc);
  56 int     pxa2x0_i2s_attach_sub(struct pxa2x0_i2s_softc *);
  57 int     pxa2x0_i2s_detach_sub(struct pxa2x0_i2s_softc *);
  58 void    pxa2x0_i2s_open(struct pxa2x0_i2s_softc *);
  59 void    pxa2x0_i2s_close(struct pxa2x0_i2s_softc *);
  60 void    pxa2x0_i2s_write(struct pxa2x0_i2s_softc *, u_int32_t);
  61
  62 void    pxa2x0_i2s_setspeed(struct pxa2x0_i2s_softc *, u_int *);
  63
  64 void *  pxa2x0_i2s_allocm(void *, int, size_t, struct malloc_type *, int);
  65 void    pxa2x0_i2s_freem(void  *, void *, struct malloc_type *);
  66 paddr_t pxa2x0_i2s_mappage(void *, void *, off_t, int);
  67 int     pxa2x0_i2s_round_blocksize(void *, int, int, const struct audio_params *);
  68 size_t  pxa2x0_i2s_round_buffersize(void *, int, size_t);
  69 int     pxa2x0_i2s_halt_output(void *);
  70 int     pxa2x0_i2s_halt_input(void *);
  71 int     pxa2x0_i2s_start_output(void *, void *, int, void (*)(void *), void *);
  72 int     pxa2x0_i2s_start_input(void *, void *, int, void (*)(void *), void *);
  73
  74 #endif