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      1 /*	$NetBSD: pxa2x0_i2s.h,v 1.6 2019/05/08 13:40:14 isaki Exp $	*/
      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 (at) 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 <sys/bus.h>
     24 
     25 struct pxa2x0_i2s_dma;
     26 struct audio_params;
     27 
     28 struct pxa2x0_i2s_softc {
     29 	kmutex_t *sc_intr_lock;
     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 *, uint32_t);
     61 
     62 void	pxa2x0_i2s_setspeed(struct pxa2x0_i2s_softc *, u_int);
     63 
     64 void *	pxa2x0_i2s_allocm(void *, int, size_t);
     65 void	pxa2x0_i2s_freem(void  *, void *, size_t);
     66 int	pxa2x0_i2s_round_blocksize(void *, int, int, const struct audio_params *);
     67 size_t	pxa2x0_i2s_round_buffersize(void *, int, size_t);
     68 int	pxa2x0_i2s_halt_output(void *);
     69 int	pxa2x0_i2s_halt_input(void *);
     70 int	pxa2x0_i2s_start_output(void *, void *, int, void (*)(void *), void *);
     71 int	pxa2x0_i2s_start_input(void *, void *, int, void (*)(void *), void *);
     72 
     73 #endif
     74