| /* |
| * Copyright 2008-2014 Freescale Semiconductor, Inc. All Rights Reserved. |
| * |
| * The code contained herein is licensed under the GNU General Public |
| * License. You may obtain a copy of the GNU General Public License |
| * Version 2 or later at the following locations: |
| * |
| * http://www.opensource.org/licenses/gpl-license.html |
| * http://www.gnu.org/copyleft/gpl.html |
| * |
| * @file mxc_asrc.h |
| * |
| * @brief i.MX Asynchronous Sample Rate Converter |
| * |
| * @ingroup Audio |
| */ |
| |
| #ifndef __MXC_ASRC_UAPI_H__ |
| #define __MXC_ASRC_UAPI_H__ |
| |
| #define ASRC_IOC_MAGIC 'C' |
| |
| #define ASRC_REQ_PAIR _IOWR(ASRC_IOC_MAGIC, 0, struct asrc_req) |
| #define ASRC_CONFIG_PAIR _IOWR(ASRC_IOC_MAGIC, 1, struct asrc_config) |
| #define ASRC_RELEASE_PAIR _IOW(ASRC_IOC_MAGIC, 2, enum asrc_pair_index) |
| #define ASRC_CONVERT _IOW(ASRC_IOC_MAGIC, 3, struct asrc_convert_buffer) |
| #define ASRC_START_CONV _IOW(ASRC_IOC_MAGIC, 4, enum asrc_pair_index) |
| #define ASRC_STOP_CONV _IOW(ASRC_IOC_MAGIC, 5, enum asrc_pair_index) |
| #define ASRC_STATUS _IOW(ASRC_IOC_MAGIC, 6, struct asrc_status_flags) |
| #define ASRC_FLUSH _IOW(ASRC_IOC_MAGIC, 7, enum asrc_pair_index) |
| |
| enum asrc_pair_index { |
| ASRC_INVALID_PAIR = -1, |
| ASRC_PAIR_A = 0, |
| ASRC_PAIR_B = 1, |
| ASRC_PAIR_C = 2, |
| }; |
| |
| #define ASRC_PAIR_MAX_NUM (ASRC_PAIR_C + 1) |
| |
| enum asrc_inclk { |
| INCLK_NONE = 0x03, |
| INCLK_ESAI_RX = 0x00, |
| INCLK_SSI1_RX = 0x01, |
| INCLK_SSI2_RX = 0x02, |
| INCLK_SSI3_RX = 0x07, |
| INCLK_SPDIF_RX = 0x04, |
| INCLK_MLB_CLK = 0x05, |
| INCLK_PAD = 0x06, |
| INCLK_ESAI_TX = 0x08, |
| INCLK_SSI1_TX = 0x09, |
| INCLK_SSI2_TX = 0x0a, |
| INCLK_SSI3_TX = 0x0b, |
| INCLK_SPDIF_TX = 0x0c, |
| INCLK_ASRCK1_CLK = 0x0f, |
| }; |
| |
| enum asrc_outclk { |
| OUTCLK_NONE = 0x03, |
| OUTCLK_ESAI_TX = 0x00, |
| OUTCLK_SSI1_TX = 0x01, |
| OUTCLK_SSI2_TX = 0x02, |
| OUTCLK_SSI3_TX = 0x07, |
| OUTCLK_SPDIF_TX = 0x04, |
| OUTCLK_MLB_CLK = 0x05, |
| OUTCLK_PAD = 0x06, |
| OUTCLK_ESAI_RX = 0x08, |
| OUTCLK_SSI1_RX = 0x09, |
| OUTCLK_SSI2_RX = 0x0a, |
| OUTCLK_SSI3_RX = 0x0b, |
| OUTCLK_SPDIF_RX = 0x0c, |
| OUTCLK_ASRCK1_CLK = 0x0f, |
| }; |
| |
| enum asrc_word_width { |
| ASRC_WIDTH_24_BIT = 0, |
| ASRC_WIDTH_16_BIT = 1, |
| ASRC_WIDTH_8_BIT = 2, |
| }; |
| |
| struct asrc_config { |
| enum asrc_pair_index pair; |
| unsigned int channel_num; |
| unsigned int buffer_num; |
| unsigned int dma_buffer_size; |
| unsigned int input_sample_rate; |
| unsigned int output_sample_rate; |
| enum asrc_word_width input_word_width; |
| enum asrc_word_width output_word_width; |
| enum asrc_inclk inclk; |
| enum asrc_outclk outclk; |
| }; |
| |
| struct asrc_req { |
| unsigned int chn_num; |
| enum asrc_pair_index index; |
| }; |
| |
| struct asrc_querybuf { |
| unsigned int buffer_index; |
| unsigned int input_length; |
| unsigned int output_length; |
| unsigned long input_offset; |
| unsigned long output_offset; |
| }; |
| |
| struct asrc_convert_buffer { |
| void *input_buffer_vaddr; |
| void *output_buffer_vaddr; |
| unsigned int input_buffer_length; |
| unsigned int output_buffer_length; |
| }; |
| |
| struct asrc_status_flags { |
| enum asrc_pair_index index; |
| unsigned int overload_error; |
| }; |
| |
| enum asrc_error_status { |
| ASRC_TASK_Q_OVERLOAD = 0x01, |
| ASRC_OUTPUT_TASK_OVERLOAD = 0x02, |
| ASRC_INPUT_TASK_OVERLOAD = 0x04, |
| ASRC_OUTPUT_BUFFER_OVERFLOW = 0x08, |
| ASRC_INPUT_BUFFER_UNDERRUN = 0x10, |
| }; |
| #endif/* __MXC_ASRC_UAPI_H__ */ |
