projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 6c742509 SG |
1 | /* |
| 2 | * atmel_ssc_dai.h - ALSA SSC interface for the Atmel SoC | |
| 3 | * | |
| 4 | * Copyright (C) 2005 SAN People | |
| 5 | * Copyright (C) 2008 Atmel | |
| 6 | * | |
| 7 | * Author: Sedji Gaouaou <sedji.gaouaou@atmel.com> | |
| 8 | * ATMEL CORP. | |
| 9 | * | |
| 10 | * Based on at91-ssc.c by | |
| 11 | * Frank Mandarino <fmandarino@endrelia.com> | |
| 12 | * Based on pxa2xx Platform drivers by | |
| 64ca0404 | 13 | * Liam Girdwood <lrg@slimlogic.co.uk> |
| 6c742509 SG |
14 | * |
| 15 | * This program is free software; you can redistribute it and/or modify | |
| 16 | * it under the terms of the GNU General Public License as published by | |
| 17 | * the Free Software Foundation; either version 2 of the License, or | |
| 18 | * (at your option) any later version. | |
| 19 | * | |
| 20 | * This program is distributed in the hope that it will be useful, | |
| 21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 23 | * GNU General Public License for more details. | |
| 24 | * | |
| 25 | * You should have received a copy of the GNU General Public License | |
| 26 | * along with this program; if not, write to the Free Software | |
| 27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 28 | */ | |
| 29 | ||
| 30 | #ifndef _ATMEL_SSC_DAI_H | |
| 31 | #define _ATMEL_SSC_DAI_H | |
| 32 | ||
| 33 | #include <linux/types.h> | |
| 34 | #include <linux/atmel-ssc.h> | |
| 35 | ||
| 36 | #include "atmel-pcm.h" | |
| 37 | ||
| 38 | /* SSC system clock ids */ | |
| 39 | #define ATMEL_SYSCLK_MCK 0 /* SSC uses AT91 MCK as system clock */ | |
| 40 | ||
| 41 | /* SSC divider ids */ | |
| 42 | #define ATMEL_SSC_CMR_DIV 0 /* MCK divider for BCLK */ | |
| 43 | #define ATMEL_SSC_TCMR_PERIOD 1 /* BCLK divider for transmit FS */ | |
| 44 | #define ATMEL_SSC_RCMR_PERIOD 2 /* BCLK divider for receive FS */ | |
| 45 | /* | |
| 46 | * SSC direction masks | |
| 47 | */ | |
| 48 | #define SSC_DIR_MASK_UNUSED 0 | |
| 49 | #define SSC_DIR_MASK_PLAYBACK 1 | |
| 50 | #define SSC_DIR_MASK_CAPTURE 2 | |
| 51 | ||
| 52 | /* | |
| 53 | * SSC register values that Atmel left out of <linux/atmel-ssc.h>. These | |
| 54 | * are expected to be used with SSC_BF | |
| 55 | */ | |
| 56 | /* START bit field values */ | |
| 57 | #define SSC_START_CONTINUOUS 0 | |
| 58 | #define SSC_START_TX_RX 1 | |
| 59 | #define SSC_START_LOW_RF 2 | |
| 60 | #define SSC_START_HIGH_RF 3 | |
| 61 | #define SSC_START_FALLING_RF 4 | |
| 62 | #define SSC_START_RISING_RF 5 | |
| 63 | #define SSC_START_LEVEL_RF 6 | |
| 64 | #define SSC_START_EDGE_RF 7 | |
| 65 | #define SSS_START_COMPARE_0 8 | |
| 66 | ||
| 67 | /* CKI bit field values */ | |
| 68 | #define SSC_CKI_FALLING 0 | |
| 69 | #define SSC_CKI_RISING 1 | |
| 70 | ||
| 71 | /* CKO bit field values */ | |
| 72 | #define SSC_CKO_NONE 0 | |
| 73 | #define SSC_CKO_CONTINUOUS 1 | |
| 74 | #define SSC_CKO_TRANSFER 2 | |
| 75 | ||
| 76 | /* CKS bit field values */ | |
| 77 | #define SSC_CKS_DIV 0 | |
| 78 | #define SSC_CKS_CLOCK 1 | |
| 79 | #define SSC_CKS_PIN 2 | |
| 80 | ||
| 81 | /* FSEDGE bit field values */ | |
| 82 | #define SSC_FSEDGE_POSITIVE 0 | |
| 83 | #define SSC_FSEDGE_NEGATIVE 1 | |
| 84 | ||
| 85 | /* FSOS bit field values */ | |
| 86 | #define SSC_FSOS_NONE 0 | |
| 87 | #define SSC_FSOS_NEGATIVE 1 | |
| 88 | #define SSC_FSOS_POSITIVE 2 | |
| 89 | #define SSC_FSOS_LOW 3 | |
| 90 | #define SSC_FSOS_HIGH 4 | |
| 91 | #define SSC_FSOS_TOGGLE 5 | |
| 92 | ||
| 93 | #define START_DELAY 1 | |
| 94 | ||
| 95 | struct atmel_ssc_state { | |
| 96 | u32 ssc_cmr; | |
| 97 | u32 ssc_rcmr; | |
| 98 | u32 ssc_rfmr; | |
| 99 | u32 ssc_tcmr; | |
| 100 | u32 ssc_tfmr; | |
| 101 | u32 ssc_sr; | |
| 102 | u32 ssc_imr; | |
| 103 | }; | |
| 104 | ||
| 105 | ||
| 106 | struct atmel_ssc_info { | |
| 107 | char *name; | |
| 108 | struct ssc_device *ssc; | |
| 109 | spinlock_t lock; /* lock for dir_mask */ | |
| 110 | unsigned short dir_mask; /* 0=unused, 1=playback, 2=capture */ | |
| 111 | unsigned short initialized; /* true if SSC has been initialized */ | |
| 112 | unsigned short daifmt; | |
| 113 | unsigned short cmr_div; | |
| 114 | unsigned short tcmr_period; | |
| 115 | unsigned short rcmr_period; | |
| 116 | struct atmel_pcm_dma_params *dma_params[2]; | |
| 117 | struct atmel_ssc_state ssc_state; | |
| 118 | }; | |
| 6c742509 | 119 | |
| be681a82 BS |
120 | int atmel_ssc_set_audio(int ssc_id); |
| 121 | void atmel_ssc_put_audio(int ssc_id); | |
| abfa4eae | 122 | |
| 6c742509 | 123 | #endif /* _AT91_SSC_DAI_H */ |