309 lines
18 KiB
C
309 lines
18 KiB
C
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/*
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* Copyright (c) 2013-2017 ARM Limited. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an AS IS BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Date: 2. Feb 2017
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* $Revision: V1.1
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*
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* Project: SAI (Serial Audio Interface) Driver definitions
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*/
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/* History:
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* Version 1.1
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* ARM_SAI_STATUS made volatile
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* Version 1.0
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* Initial release
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*/
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#ifndef DRIVER_SAI_H_
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#define DRIVER_SAI_H_
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include "Driver_Common.h"
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#define ARM_SAI_API_VERSION ARM_DRIVER_VERSION_MAJOR_MINOR(1,1) /* API version */
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/****** SAI Control Codes *****/
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#define ARM_SAI_CONTROL_Msk (0xFFU)
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#define ARM_SAI_CONFIGURE_TX (0x01U) ///< Configure Transmitter; arg1 and arg2 provide additional configuration
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#define ARM_SAI_CONFIGURE_RX (0x02U) ///< Configure Receiver; arg1 and arg2 provide additional configuration
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#define ARM_SAI_CONTROL_TX (0x03U) ///< Control Transmitter; arg1.0: 0=disable (default), 1=enable; arg1.1: mute
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#define ARM_SAI_CONTROL_RX (0x04U) ///< Control Receiver; arg1.0: 0=disable (default), 1=enable
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#define ARM_SAI_MASK_SLOTS_TX (0x05U) ///< Mask Transmitter slots; arg1 = mask (bit: 0=active, 1=inactive); all configured slots are active by default
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#define ARM_SAI_MASK_SLOTS_RX (0x06U) ///< Mask Receiver slots; arg1 = mask (bit: 0=active, 1=inactive); all configured slots are active by default
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#define ARM_SAI_ABORT_SEND (0x07U) ///< Abort \ref ARM_SAI_Send
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#define ARM_SAI_ABORT_RECEIVE (0x08U) ///< Abort \ref ARM_SAI_Receive
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/*----- SAI Control Codes: Configuration Parameters: Mode -----*/
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#define ARM_SAI_MODE_Pos 8
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#define ARM_SAI_MODE_Msk (1U << ARM_SAI_MODE_Pos)
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#define ARM_SAI_MODE_MASTER (1U << ARM_SAI_MODE_Pos) ///< Master Mode
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#define ARM_SAI_MODE_SLAVE (0U << ARM_SAI_MODE_Pos) ///< Slave Mode (default)
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/*----- SAI Control Codes: Configuration Parameters: Synchronization -----*/
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#define ARM_SAI_SYNCHRONIZATION_Pos 9
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#define ARM_SAI_SYNCHRONIZATION_Msk (1U << ARM_SAI_SYNCHRONIZATION_Pos)
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#define ARM_SAI_ASYNCHRONOUS (0U << ARM_SAI_SYNCHRONIZATION_Pos) ///< Asynchronous (default)
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#define ARM_SAI_SYNCHRONOUS (1U << ARM_SAI_SYNCHRONIZATION_Pos) ///< Synchronous
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/*----- SAI Control Codes: Configuration Parameters: Protocol -----*/
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#define ARM_SAI_PROTOCOL_Pos 10
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#define ARM_SAI_PROTOCOL_Msk (7U << ARM_SAI_PROTOCOL_Pos)
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#define ARM_SAI_PROTOCOL_USER (0U << ARM_SAI_PROTOCOL_Pos) ///< User defined (default)
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#define ARM_SAI_PROTOCOL_I2S (1U << ARM_SAI_PROTOCOL_Pos) ///< I2S
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#define ARM_SAI_PROTOCOL_MSB_JUSTIFIED (2U << ARM_SAI_PROTOCOL_Pos) ///< MSB (left) justified
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#define ARM_SAI_PROTOCOL_LSB_JUSTIFIED (3U << ARM_SAI_PROTOCOL_Pos) ///< LSB (right) justified
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#define ARM_SAI_PROTOCOL_PCM_SHORT (4U << ARM_SAI_PROTOCOL_Pos) ///< PCM with short frame
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#define ARM_SAI_PROTOCOL_PCM_LONG (5U << ARM_SAI_PROTOCOL_Pos) ///< PCM with long frame
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#define ARM_SAI_PROTOCOL_AC97 (6U << ARM_SAI_PROTOCOL_Pos) ///< AC'97
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/*----- SAI Control Codes: Configuration Parameters: Data Size -----*/
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#define ARM_SAI_DATA_SIZE_Pos 13
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#define ARM_SAI_DATA_SIZE_Msk (0x1FU << ARM_SAI_DATA_SIZE_Pos)
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#define ARM_SAI_DATA_SIZE(n) ((((n)-1)&0x1FU) << ARM_SAI_DATA_SIZE_Pos) ///< Data size in bits (8..32)
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/*----- SAI Control Codes: Configuration Parameters: Bit Order -----*/
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#define ARM_SAI_BIT_ORDER_Pos 18
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#define ARM_SAI_BIT_ORDER_Msk (1U << ARM_SAI_BIT_ORDER_Pos)
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#define ARM_SAI_MSB_FIRST (0U << ARM_SAI_BIT_ORDER_Pos) ///< Data is transferred with MSB first (default)
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#define ARM_SAI_LSB_FIRST (1U << ARM_SAI_BIT_ORDER_Pos) ///< Data is transferred with LSB first; User Protocol only (ignored otherwise)
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/*----- SAI Control Codes: Configuration Parameters: Mono Mode -----*/
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#define ARM_SAI_MONO_MODE (1U << 19) ///< Mono Mode (only for I2S, MSB/LSB justified)
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/*----- SAI Control Codes:Configuration Parameters: Companding -----*/
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#define ARM_SAI_COMPANDING_Pos 20
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#define ARM_SAI_COMPANDING_Msk (3U << ARM_SAI_COMPANDING_Pos)
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#define ARM_SAI_COMPANDING_NONE (0U << ARM_SAI_COMPANDING_Pos) ///< No compading (default)
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#define ARM_SAI_COMPANDING_A_LAW (2U << ARM_SAI_COMPANDING_Pos) ///< A-Law companding
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#define ARM_SAI_COMPANDING_U_LAW (3U << ARM_SAI_COMPANDING_Pos) ///< u-Law companding
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/*----- SAI Control Codes: Configuration Parameters: Clock Polarity -----*/
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#define ARM_SAI_CLOCK_POLARITY_Pos 23
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#define ARM_SAI_CLOCK_POLARITY_Msk (1U << ARM_SAI_CLOCK_POLARITY_Pos)
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#define ARM_SAI_CLOCK_POLARITY_0 (0U << ARM_SAI_CLOCK_POLARITY_Pos) ///< Drive on falling edge, Capture on rising edge (default)
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#define ARM_SAI_CLOCK_POLARITY_1 (1U << ARM_SAI_CLOCK_POLARITY_Pos) ///< Drive on rising edge, Capture on falling edge
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/*----- SAI Control Codes: Configuration Parameters: Master Clock Pin -----*/
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#define ARM_SAI_MCLK_PIN_Pos 24
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#define ARM_SAI_MCLK_PIN_Msk (3U << ARM_SAI_MCLK_PIN_Pos)
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#define ARM_SAI_MCLK_PIN_INACTIVE (0U << ARM_SAI_MCLK_PIN_Pos) ///< MCLK not used (default)
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#define ARM_SAI_MCLK_PIN_OUTPUT (1U << ARM_SAI_MCLK_PIN_Pos) ///< MCLK is output (Master only)
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#define ARM_SAI_MCLK_PIN_INPUT (2U << ARM_SAI_MCLK_PIN_Pos) ///< MCLK is input (Master only)
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/****** SAI Configuration (arg1) *****/
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/*----- SAI Configuration (arg1): Frame Length -----*/
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#define ARM_SAI_FRAME_LENGTH_Pos 0
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#define ARM_SAI_FRAME_LENGTH_Msk (0x3FFU << ARM_SAI_FRAME_LENGTH_Pos)
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#define ARM_SAI_FRAME_LENGTH(n) ((((n)-1)&0x3FFU) << ARM_SAI_FRAME_LENGTH_Pos) ///< Frame length in bits (8..1024); default depends on protocol and data
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/*----- SAI Configuration (arg1): Frame Sync Width -----*/
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#define ARM_SAI_FRAME_SYNC_WIDTH_Pos 10
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#define ARM_SAI_FRAME_SYNC_WIDTH_Msk (0xFFU << ARM_SAI_FRAME_SYNC_WIDTH_Pos)
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#define ARM_SAI_FRAME_SYNC_WIDTH(n) ((((n)-1)&0xFFU) << ARM_SAI_FRAME_SYNC_WIDTH_Pos) ///< Frame Sync width in bits (1..256); default=1; User Protocol only (ignored otherwise)
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/*----- SAI Configuration (arg1): Frame Sync Polarity -----*/
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#define ARM_SAI_FRAME_SYNC_POLARITY_Pos 18
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#define ARM_SAI_FRAME_SYNC_POLARITY_Msk (1U << ARM_SAI_FRAME_SYNC_POLARITY_Pos)
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#define ARM_SAI_FRAME_SYNC_POLARITY_HIGH (0U << ARM_SAI_FRAME_SYNC_POLARITY_Pos) ///< Frame Sync is active high (default); User Protocol only (ignored otherwise)
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#define ARM_SAI_FRAME_SYNC_POLARITY_LOW (1U << ARM_SAI_FRAME_SYNC_POLARITY_Pos) ///< Frame Sync is active low; User Protocol only (ignored otherwise)
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/*----- SAI Configuration (arg1): Frame Sync Early -----*/
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#define ARM_SAI_FRAME_SYNC_EARLY (1U << 19) ///< Frame Sync one bit before the first bit of the frame; User Protocol only (ignored otherwise)
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/*----- SAI Configuration (arg1): Slot Count -----*/
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#define ARM_SAI_SLOT_COUNT_Pos 20
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#define ARM_SAI_SLOT_COUNT_Msk (0x1FU << ARM_SAI_SLOT_COUNT_Pos)
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#define ARM_SAI_SLOT_COUNT(n) ((((n)-1)&0x1FU) << ARM_SAI_SLOT_COUNT_Pos) ///< Number of slots in frame (1..32); default=1; User Protocol only (ignored otherwise)
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/*----- SAI Configuration (arg1): Slot Size -----*/
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#define ARM_SAI_SLOT_SIZE_Pos 25
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#define ARM_SAI_SLOT_SIZE_Msk (3U << ARM_SAI_SLOT_SIZE_Pos)
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#define ARM_SAI_SLOT_SIZE_DEFAULT (0U << ARM_SAI_SLOT_SIZE_Pos) ///< Slot size is equal to data size (default)
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#define ARM_SAI_SLOT_SIZE_16 (1U << ARM_SAI_SLOT_SIZE_Pos) ///< Slot size = 16 bits; User Protocol only (ignored otherwise)
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#define ARM_SAI_SLOT_SIZE_32 (3U << ARM_SAI_SLOT_SIZE_Pos) ///< Slot size = 32 bits; User Protocol only (ignored otherwise)
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/*----- SAI Configuration (arg1): Slot Offset -----*/
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#define ARM_SAI_SLOT_OFFSET_Pos 27
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#define ARM_SAI_SLOT_OFFSET_Msk (0x1FU << ARM_SAI_SLOT_OFFSET_Pos)
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#define ARM_SAI_SLOT_OFFSET(n) (((n)&0x1FU) << ARM_SAI_SLOT_OFFSET_Pos) ///< Offset of first data bit in slot (0..31); default=0; User Protocol only (ignored otherwise)
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/****** SAI Configuration (arg2) *****/
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/*----- SAI Control Codes: Configuration Parameters: Audio Frequency (Master only) -----*/
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#define ARM_SAI_AUDIO_FREQ_Msk (0x0FFFFFU) ///< Audio frequency mask
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/*----- SAI Control Codes: Configuration Parameters: Master Clock Prescaler (Master only and MCLK Pin) -----*/
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#define ARM_SAI_MCLK_PRESCALER_Pos 20
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#define ARM_SAI_MCLK_PRESCALER_Msk (0xFFFU << ARM_SAI_MCLK_PRESCALER_Pos)
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#define ARM_SAI_MCLK_PRESCALER(n) ((((n)-1)&0xFFFU) << ARM_SAI_MCLK_PRESCALER_Pos) ///< MCLK prescaler; Audio_frequency = MCLK/n; n = 1..4096 (default=1)
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/****** SAI specific error codes *****/
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#define ARM_SAI_ERROR_SYNCHRONIZATION (ARM_DRIVER_ERROR_SPECIFIC - 1) ///< Specified Synchronization not supported
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#define ARM_SAI_ERROR_PROTOCOL (ARM_DRIVER_ERROR_SPECIFIC - 2) ///< Specified Protocol not supported
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#define ARM_SAI_ERROR_DATA_SIZE (ARM_DRIVER_ERROR_SPECIFIC - 3) ///< Specified Data size not supported
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#define ARM_SAI_ERROR_BIT_ORDER (ARM_DRIVER_ERROR_SPECIFIC - 4) ///< Specified Bit order not supported
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#define ARM_SAI_ERROR_MONO_MODE (ARM_DRIVER_ERROR_SPECIFIC - 5) ///< Specified Mono mode not supported
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#define ARM_SAI_ERROR_COMPANDING (ARM_DRIVER_ERROR_SPECIFIC - 6) ///< Specified Companding not supported
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#define ARM_SAI_ERROR_CLOCK_POLARITY (ARM_DRIVER_ERROR_SPECIFIC - 7) ///< Specified Clock polarity not supported
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#define ARM_SAI_ERROR_AUDIO_FREQ (ARM_DRIVER_ERROR_SPECIFIC - 8) ///< Specified Audio frequency not supported
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#define ARM_SAI_ERROR_MCLK_PIN (ARM_DRIVER_ERROR_SPECIFIC - 9) ///< Specified MCLK Pin setting not supported
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#define ARM_SAI_ERROR_MCLK_PRESCALER (ARM_DRIVER_ERROR_SPECIFIC - 10) ///< Specified MCLK Prescaler not supported
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#define ARM_SAI_ERROR_FRAME_LENGHT (ARM_DRIVER_ERROR_SPECIFIC - 11) ///< Specified Frame length not supported
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#define ARM_SAI_ERROR_FRAME_SYNC_WIDTH (ARM_DRIVER_ERROR_SPECIFIC - 12) ///< Specified Frame Sync width not supported
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#define ARM_SAI_ERROR_FRAME_SYNC_POLARITY (ARM_DRIVER_ERROR_SPECIFIC - 13) ///< Specified Frame Sync polarity not supported
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#define ARM_SAI_ERROR_FRAME_SYNC_EARLY (ARM_DRIVER_ERROR_SPECIFIC - 14) ///< Specified Frame Sync early not supported
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#define ARM_SAI_ERROR_SLOT_COUNT (ARM_DRIVER_ERROR_SPECIFIC - 15) ///< Specified Slot count not supported
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#define ARM_SAI_ERROR_SLOT_SIZE (ARM_DRIVER_ERROR_SPECIFIC - 16) ///< Specified Slot size not supported
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#define ARM_SAI_ERROR_SLOT_OFFESET (ARM_DRIVER_ERROR_SPECIFIC - 17) ///< Specified Slot offset not supported
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/**
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\brief SAI Status
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*/
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typedef volatile struct _ARM_SAI_STATUS {
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uint32_t tx_busy : 1; ///< Transmitter busy flag
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uint32_t rx_busy : 1; ///< Receiver busy flag
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uint32_t tx_underflow : 1; ///< Transmit data underflow detected (cleared on start of next send operation)
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uint32_t rx_overflow : 1; ///< Receive data overflow detected (cleared on start of next receive operation)
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uint32_t frame_error : 1; ///< Sync Frame error detected (cleared on start of next send/receive operation)
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uint32_t reserved : 27;
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} ARM_SAI_STATUS;
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/****** SAI Event *****/
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#define ARM_SAI_EVENT_SEND_COMPLETE (1U << 0) ///< Send completed
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#define ARM_SAI_EVENT_RECEIVE_COMPLETE (1U << 1) ///< Receive completed
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#define ARM_SAI_EVENT_TX_UNDERFLOW (1U << 2) ///< Transmit data not available
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#define ARM_SAI_EVENT_RX_OVERFLOW (1U << 3) ///< Receive data overflow
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#define ARM_SAI_EVENT_FRAME_ERROR (1U << 4) ///< Sync Frame error in Slave mode (optional)
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// Function documentation
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/**
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\fn ARM_DRIVER_VERSION ARM_SAI_GetVersion (void)
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\brief Get driver version.
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\return \ref ARM_DRIVER_VERSION
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\fn ARM_SAI_CAPABILITIES ARM_SAI_GetCapabilities (void)
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\brief Get driver capabilities.
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\return \ref ARM_SAI_CAPABILITIES
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\fn int32_t ARM_SAI_Initialize (ARM_SAI_SignalEvent_t cb_event)
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\brief Initialize SAI Interface.
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\param[in] cb_event Pointer to \ref ARM_SAI_SignalEvent
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\return \ref execution_status
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\fn int32_t ARM_SAI_Uninitialize (void)
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\brief De-initialize SAI Interface.
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\return \ref execution_status
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\fn int32_t ARM_SAI_PowerControl (ARM_POWER_STATE state)
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\brief Control SAI Interface Power.
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\param[in] state Power state
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\return \ref execution_status
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\fn int32_t ARM_SAI_Send (const void *data, uint32_t num)
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\brief Start sending data to SAI transmitter.
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\param[in] data Pointer to buffer with data to send to SAI transmitter
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\param[in] num Number of data items to send
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\return \ref execution_status
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\fn int32_t ARM_SAI_Receive (void *data, uint32_t num)
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\brief Start receiving data from SAI receiver.
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\param[out] data Pointer to buffer for data to receive from SAI receiver
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\param[in] num Number of data items to receive
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\return \ref execution_status
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\fn uint32_t ARM_SAI_GetTxCount (void)
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\brief Get transmitted data count.
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\return number of data items transmitted
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\fn uint32_t ARM_SAI_GetRxCount (void)
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\brief Get received data count.
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\return number of data items received
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\fn int32_t ARM_SAI_Control (uint32_t control, uint32_t arg1, uint32_t arg2)
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\brief Control SAI Interface.
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\param[in] control Operation
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\param[in] arg1 Argument 1 of operation (optional)
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\param[in] arg2 Argument 2 of operation (optional)
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\return common \ref execution_status and driver specific \ref sai_execution_status
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\fn ARM_SAI_STATUS ARM_SAI_GetStatus (void)
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\brief Get SAI status.
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\return SAI status \ref ARM_SAI_STATUS
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\fn void ARM_SAI_SignalEvent (uint32_t event)
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\brief Signal SAI Events.
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\param[in] event \ref SAI_events notification mask
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\return none
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*/
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typedef void (*ARM_SAI_SignalEvent_t) (uint32_t event); ///< Pointer to \ref ARM_SAI_SignalEvent : Signal SAI Event.
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/**
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\brief SAI Driver Capabilities.
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*/
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typedef struct _ARM_SAI_CAPABILITIES {
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uint32_t asynchronous : 1; ///< supports asynchronous Transmit/Receive
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uint32_t synchronous : 1; ///< supports synchronous Transmit/Receive
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uint32_t protocol_user : 1; ///< supports user defined Protocol
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uint32_t protocol_i2s : 1; ///< supports I2S Protocol
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uint32_t protocol_justified : 1; ///< supports MSB/LSB justified Protocol
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uint32_t protocol_pcm : 1; ///< supports PCM short/long frame Protocol
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uint32_t protocol_ac97 : 1; ///< supports AC'97 Protocol
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uint32_t mono_mode : 1; ///< supports Mono mode
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uint32_t companding : 1; ///< supports Companding
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uint32_t mclk_pin : 1; ///< supports MCLK (Master Clock) pin
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uint32_t event_frame_error : 1; ///< supports Frame error event: \ref ARM_SAI_EVENT_FRAME_ERROR
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uint32_t reserved : 21; ///< Reserved (must be zero)
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} ARM_SAI_CAPABILITIES;
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/**
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\brief Access structure of the SAI Driver.
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*/
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typedef struct _ARM_DRIVER_SAI {
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ARM_DRIVER_VERSION (*GetVersion) (void); ///< Pointer to \ref ARM_SAI_GetVersion : Get driver version.
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ARM_SAI_CAPABILITIES (*GetCapabilities) (void); ///< Pointer to \ref ARM_SAI_GetCapabilities : Get driver capabilities.
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int32_t (*Initialize) (ARM_SAI_SignalEvent_t cb_event); ///< Pointer to \ref ARM_SAI_Initialize : Initialize SAI Interface.
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int32_t (*Uninitialize) (void); ///< Pointer to \ref ARM_SAI_Uninitialize : De-initialize SAI Interface.
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int32_t (*PowerControl) (ARM_POWER_STATE state); ///< Pointer to \ref ARM_SAI_PowerControl : Control SAI Interface Power.
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int32_t (*Send) (const void *data, uint32_t num); ///< Pointer to \ref ARM_SAI_Send : Start sending data to SAI Interface.
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int32_t (*Receive) ( void *data, uint32_t num); ///< Pointer to \ref ARM_SAI_Receive : Start receiving data from SAI Interface.
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uint32_t (*GetTxCount) (void); ///< Pointer to \ref ARM_SAI_GetTxCount : Get transmitted data count.
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uint32_t (*GetRxCount) (void); ///< Pointer to \ref ARM_SAI_GetRxCount : Get received data count.
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int32_t (*Control) (uint32_t control, uint32_t arg1, uint32_t arg2); ///< Pointer to \ref ARM_SAI_Control : Control SAI Interface.
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ARM_SAI_STATUS (*GetStatus) (void); ///< Pointer to \ref ARM_SAI_GetStatus : Get SAI status.
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} const ARM_DRIVER_SAI;
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#ifdef __cplusplus
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}
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#endif
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#endif /* DRIVER_SAI_H_ */
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