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@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