1 /* ----------------------------------------------------------------------------
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2 * ATMEL Microcontroller Software Support
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3 * ----------------------------------------------------------------------------
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4 * Copyright (c) 2008, Atmel Corporation
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6 * All rights reserved.
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are met:
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11 * - Redistributions of source code must retain the above copyright notice,
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12 * this list of conditions and the disclaimer below.
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14 * Atmel's name may not be used to endorse or promote products derived from
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15 * this software without specific prior written permission.
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17 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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20 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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23 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 * ----------------------------------------------------------------------------
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34 //------------------------------------------------------------------------------
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36 //------------------------------------------------------------------------------
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38 /// The channel is already busy with a transfer.
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39 #define AC97C_ERROR_BUSY 1
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40 /// The transfer has been stopped by the user.
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41 #define AC97C_ERROR_STOPPED 2
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43 /// Codec channel index.
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44 #define AC97C_CHANNEL_CODEC 0
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45 /// Channel A index.
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46 #define AC97C_CHANNEL_A 1
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47 /// Channel B index.
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48 #define AC97C_CHANNEL_B 2
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50 /// Codec transmit/receive transfer index.
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51 #define AC97C_CODEC_TRANSFER 0
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52 /// Channel A receive transfer index.
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53 #define AC97C_CHANNEL_A_RECEIVE 1
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54 /// Channel A transmit transfer index.
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55 #define AC97C_CHANNEL_A_TRANSMIT 2
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56 /// Channel B receive transfer index.
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57 #define AC97C_CHANNEL_B_RECEIVE 3
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58 /// Channel B transmit transfer index.
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59 #define AC97C_CHANNEL_B_TRANSMIT 4
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61 //------------------------------------------------------------------------------
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63 //------------------------------------------------------------------------------
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65 /// AC97C transfer callback function.
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66 typedef void (*Ac97Callback)(void *pArg,
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67 unsigned char status,
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68 unsigned int remaining);
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70 //------------------------------------------------------------------------------
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71 // Exported functions
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72 //------------------------------------------------------------------------------
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74 extern void AC97C_Configure();
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76 extern void AC97C_ConfigureChannel(unsigned char channel, unsigned int cfg);
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78 extern void AC97C_AssignInputSlots(unsigned char channel, unsigned int slots);
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80 extern void AC97C_AssignOutputSlots(unsigned char channel, unsigned int slots);
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82 extern unsigned char AC97C_Transfer(
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83 unsigned char channel,
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84 unsigned char *pBuffer,
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85 unsigned int numSamples,
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86 Ac97Callback callback,
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89 extern unsigned char AC97C_IsFinished(unsigned char channel);
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91 extern void AC97C_WriteCodec(unsigned char address, unsigned short data);
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93 extern unsigned short AC97C_ReadCodec(unsigned char address);
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95 extern void AC97C_SetChannelSize(unsigned char channel, unsigned char size);
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97 extern void AC97C_CancelTransfer(unsigned char channel);
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99 #endif //#ifndef AC97C_H
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