1*6c742509SSedji Gaouaou /* 2*6c742509SSedji Gaouaou * atmel_ssc_dai.h - ALSA SSC interface for the Atmel SoC 3*6c742509SSedji Gaouaou * 4*6c742509SSedji Gaouaou * Copyright (C) 2005 SAN People 5*6c742509SSedji Gaouaou * Copyright (C) 2008 Atmel 6*6c742509SSedji Gaouaou * 7*6c742509SSedji Gaouaou * Author: Sedji Gaouaou <sedji.gaouaou@atmel.com> 8*6c742509SSedji Gaouaou * ATMEL CORP. 9*6c742509SSedji Gaouaou * 10*6c742509SSedji Gaouaou * Based on at91-ssc.c by 11*6c742509SSedji Gaouaou * Frank Mandarino <fmandarino@endrelia.com> 12*6c742509SSedji Gaouaou * Based on pxa2xx Platform drivers by 13*6c742509SSedji Gaouaou * Liam Girdwood <liam.girdwood@wolfsonmicro.com> 14*6c742509SSedji Gaouaou * 15*6c742509SSedji Gaouaou * This program is free software; you can redistribute it and/or modify 16*6c742509SSedji Gaouaou * it under the terms of the GNU General Public License as published by 17*6c742509SSedji Gaouaou * the Free Software Foundation; either version 2 of the License, or 18*6c742509SSedji Gaouaou * (at your option) any later version. 19*6c742509SSedji Gaouaou * 20*6c742509SSedji Gaouaou * This program is distributed in the hope that it will be useful, 21*6c742509SSedji Gaouaou * but WITHOUT ANY WARRANTY; without even the implied warranty of 22*6c742509SSedji Gaouaou * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23*6c742509SSedji Gaouaou * GNU General Public License for more details. 24*6c742509SSedji Gaouaou * 25*6c742509SSedji Gaouaou * You should have received a copy of the GNU General Public License 26*6c742509SSedji Gaouaou * along with this program; if not, write to the Free Software 27*6c742509SSedji Gaouaou * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 28*6c742509SSedji Gaouaou */ 29*6c742509SSedji Gaouaou 30*6c742509SSedji Gaouaou #ifndef _ATMEL_SSC_DAI_H 31*6c742509SSedji Gaouaou #define _ATMEL_SSC_DAI_H 32*6c742509SSedji Gaouaou 33*6c742509SSedji Gaouaou #include <linux/types.h> 34*6c742509SSedji Gaouaou #include <linux/atmel-ssc.h> 35*6c742509SSedji Gaouaou 36*6c742509SSedji Gaouaou #include "atmel-pcm.h" 37*6c742509SSedji Gaouaou 38*6c742509SSedji Gaouaou /* SSC system clock ids */ 39*6c742509SSedji Gaouaou #define ATMEL_SYSCLK_MCK 0 /* SSC uses AT91 MCK as system clock */ 40*6c742509SSedji Gaouaou 41*6c742509SSedji Gaouaou /* SSC divider ids */ 42*6c742509SSedji Gaouaou #define ATMEL_SSC_CMR_DIV 0 /* MCK divider for BCLK */ 43*6c742509SSedji Gaouaou #define ATMEL_SSC_TCMR_PERIOD 1 /* BCLK divider for transmit FS */ 44*6c742509SSedji Gaouaou #define ATMEL_SSC_RCMR_PERIOD 2 /* BCLK divider for receive FS */ 45*6c742509SSedji Gaouaou /* 46*6c742509SSedji Gaouaou * SSC direction masks 47*6c742509SSedji Gaouaou */ 48*6c742509SSedji Gaouaou #define SSC_DIR_MASK_UNUSED 0 49*6c742509SSedji Gaouaou #define SSC_DIR_MASK_PLAYBACK 1 50*6c742509SSedji Gaouaou #define SSC_DIR_MASK_CAPTURE 2 51*6c742509SSedji Gaouaou 52*6c742509SSedji Gaouaou /* 53*6c742509SSedji Gaouaou * SSC register values that Atmel left out of <linux/atmel-ssc.h>. These 54*6c742509SSedji Gaouaou * are expected to be used with SSC_BF 55*6c742509SSedji Gaouaou */ 56*6c742509SSedji Gaouaou /* START bit field values */ 57*6c742509SSedji Gaouaou #define SSC_START_CONTINUOUS 0 58*6c742509SSedji Gaouaou #define SSC_START_TX_RX 1 59*6c742509SSedji Gaouaou #define SSC_START_LOW_RF 2 60*6c742509SSedji Gaouaou #define SSC_START_HIGH_RF 3 61*6c742509SSedji Gaouaou #define SSC_START_FALLING_RF 4 62*6c742509SSedji Gaouaou #define SSC_START_RISING_RF 5 63*6c742509SSedji Gaouaou #define SSC_START_LEVEL_RF 6 64*6c742509SSedji Gaouaou #define SSC_START_EDGE_RF 7 65*6c742509SSedji Gaouaou #define SSS_START_COMPARE_0 8 66*6c742509SSedji Gaouaou 67*6c742509SSedji Gaouaou /* CKI bit field values */ 68*6c742509SSedji Gaouaou #define SSC_CKI_FALLING 0 69*6c742509SSedji Gaouaou #define SSC_CKI_RISING 1 70*6c742509SSedji Gaouaou 71*6c742509SSedji Gaouaou /* CKO bit field values */ 72*6c742509SSedji Gaouaou #define SSC_CKO_NONE 0 73*6c742509SSedji Gaouaou #define SSC_CKO_CONTINUOUS 1 74*6c742509SSedji Gaouaou #define SSC_CKO_TRANSFER 2 75*6c742509SSedji Gaouaou 76*6c742509SSedji Gaouaou /* CKS bit field values */ 77*6c742509SSedji Gaouaou #define SSC_CKS_DIV 0 78*6c742509SSedji Gaouaou #define SSC_CKS_CLOCK 1 79*6c742509SSedji Gaouaou #define SSC_CKS_PIN 2 80*6c742509SSedji Gaouaou 81*6c742509SSedji Gaouaou /* FSEDGE bit field values */ 82*6c742509SSedji Gaouaou #define SSC_FSEDGE_POSITIVE 0 83*6c742509SSedji Gaouaou #define SSC_FSEDGE_NEGATIVE 1 84*6c742509SSedji Gaouaou 85*6c742509SSedji Gaouaou /* FSOS bit field values */ 86*6c742509SSedji Gaouaou #define SSC_FSOS_NONE 0 87*6c742509SSedji Gaouaou #define SSC_FSOS_NEGATIVE 1 88*6c742509SSedji Gaouaou #define SSC_FSOS_POSITIVE 2 89*6c742509SSedji Gaouaou #define SSC_FSOS_LOW 3 90*6c742509SSedji Gaouaou #define SSC_FSOS_HIGH 4 91*6c742509SSedji Gaouaou #define SSC_FSOS_TOGGLE 5 92*6c742509SSedji Gaouaou 93*6c742509SSedji Gaouaou #define START_DELAY 1 94*6c742509SSedji Gaouaou 95*6c742509SSedji Gaouaou struct atmel_ssc_state { 96*6c742509SSedji Gaouaou u32 ssc_cmr; 97*6c742509SSedji Gaouaou u32 ssc_rcmr; 98*6c742509SSedji Gaouaou u32 ssc_rfmr; 99*6c742509SSedji Gaouaou u32 ssc_tcmr; 100*6c742509SSedji Gaouaou u32 ssc_tfmr; 101*6c742509SSedji Gaouaou u32 ssc_sr; 102*6c742509SSedji Gaouaou u32 ssc_imr; 103*6c742509SSedji Gaouaou }; 104*6c742509SSedji Gaouaou 105*6c742509SSedji Gaouaou 106*6c742509SSedji Gaouaou struct atmel_ssc_info { 107*6c742509SSedji Gaouaou char *name; 108*6c742509SSedji Gaouaou struct ssc_device *ssc; 109*6c742509SSedji Gaouaou spinlock_t lock; /* lock for dir_mask */ 110*6c742509SSedji Gaouaou unsigned short dir_mask; /* 0=unused, 1=playback, 2=capture */ 111*6c742509SSedji Gaouaou unsigned short initialized; /* true if SSC has been initialized */ 112*6c742509SSedji Gaouaou unsigned short daifmt; 113*6c742509SSedji Gaouaou unsigned short cmr_div; 114*6c742509SSedji Gaouaou unsigned short tcmr_period; 115*6c742509SSedji Gaouaou unsigned short rcmr_period; 116*6c742509SSedji Gaouaou struct atmel_pcm_dma_params *dma_params[2]; 117*6c742509SSedji Gaouaou struct atmel_ssc_state ssc_state; 118*6c742509SSedji Gaouaou }; 119*6c742509SSedji Gaouaou extern struct snd_soc_dai atmel_ssc_dai[]; 120*6c742509SSedji Gaouaou 121*6c742509SSedji Gaouaou #endif /* _AT91_SSC_DAI_H */ 122