456 lines
32 KiB
C
456 lines
32 KiB
C
/*
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* Copyright 2017 NXP
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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******************************************************************************
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* communication stack of audio with rpmsg
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******************************************************************************
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* Packet structure:
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* A SRTM message consists of a 10 bytes header followed by 0~N bytes of data
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*
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* +---------------+-------------------------------+
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* | | Content |
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* +---------------+-------------------------------+
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* | Byte Offset | 7 6 5 4 3 2 1 0 |
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* +---------------+---+---+---+---+---+---+---+---+
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* | 0 | Category |
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* +---------------+---+---+---+---+---+---+---+---+
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* | 1 ~ 2 | Version |
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* +---------------+---+---+---+---+---+---+---+---+
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* | 3 | Type |
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* +---------------+---+---+---+---+---+---+---+---+
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* | 4 | Command |
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* +---------------+---+---+---+---+---+---+---+---+
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* | 5 | Reserved0 |
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* +---------------+---+---+---+---+---+---+---+---+
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* | 6 | Reserved1 |
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* +---------------+---+---+---+---+---+---+---+---+
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* | 7 | Reserved2 |
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* +---------------+---+---+---+---+---+---+---+---+
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* | 8 | Reserved3 |
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* +---------------+---+---+---+---+---+---+---+---+
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* | 9 | Reserved4 |
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* +---------------+---+---+---+---+---+---+---+---+
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* | 10 | DATA 0 |
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* +---------------+---+---+---+---+---+---+---+---+
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* : : : : : : : : : : : : :
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* +---------------+---+---+---+---+---+---+---+---+
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* | N + 10 - 1 | DATA N-1 |
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* +---------------+---+---+---+---+---+---+---+---+
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*
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* +----------+------------+------------------------------------------------+
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* | Field | Byte | |
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* +----------+------------+------------------------------------------------+
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* | Category | 0 | The destination category. |
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* +----------+------------+------------------------------------------------+
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* | Version | 1 ~ 2 | The category version of the sender of the |
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* | | | packet. |
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* | | | The first byte represent the major version of |
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* | | | the packet.The second byte represent the minor |
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* | | | version of the packet. |
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* +----------+------------+------------------------------------------------+
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* | Type | 3 | The message type of current message packet. |
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* +----------+------------+------------------------------------------------+
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* | Command | 4 | The command byte sent to remote processor/SoC. |
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* +----------+------------+------------------------------------------------+
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* | Reserved | 5 ~ 9 | Reserved field for future extension. |
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* +----------+------------+------------------------------------------------+
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* | Data | N | The data payload of the message packet. |
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* +----------+------------+------------------------------------------------+
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*
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* Audio control:
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* SRTM Audio Control Category Request Command Table:
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | Category | Version | Type | Command | Data | Function |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x00 | Data[0]: Audio Device Index | Open an Audio TX Instance. |
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* | | | | | Data[1]: format | |
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* | | | | | Data[2]: channels | |
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* | | | | | Data[3-6]: samplerate | |
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* | | | | | Data[7-10]: buffer_addr | |
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* | | | | | Data[11-14]: buffer_size | |
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* | | | | | Data[15-18]: period_size | |
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* | | | | | Data[19-22]: buffer_tail | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x01 | Data[0]: Audio Device Index | Start an Audio TX Instance. |
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* | | | | | Same as above command | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x02 | Data[0]: Audio Device Index | Pause an Audio TX Instance. |
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* | | | | | Same as above command | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x03 | Data[0]: Audio Device Index | Resume an Audio TX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x04 | Data[0]: Audio Device Index | Terminate an Audio TX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x05 | Data[0]: Audio Device Index | Close an Audio TX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x06 | Data[0]: Audio Device Index | Set Parameters for an Audio TX Instance. |
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* | | | | | Data[1]: format | |
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* | | | | | Data[2]: channels | |
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* | | | | | Data[3-6]: samplerate | |
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* | | | | | Data[7-22]: reserved | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x07 | Data[0]: Audio Device Index | Set Audio TX Buffer. |
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* | | | | | Data[1-6]: reserved | |
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* | | | | | Data[7-10]: buffer_addr | |
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* | | | | | Data[11-14]: buffer_size | |
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* | | | | | Data[15-18]: period_size | |
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* | | | | | Data[19-22]: buffer_tail | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x08 | Data[0]: Audio Device Index | Suspend an Audio TX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x09 | Data[0]: Audio Device Index | Resume an Audio TX Instance. |
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* | | | | | Data[1]: format | |
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* | | | | | Data[2]: channels | |
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* | | | | | Data[3-6]: samplerate | |
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* | | | | | Data[7-10]: buffer_addr | |
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* | | | | | Data[11-14]: buffer_size | |
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* | | | | | Data[15-18]: period_size | |
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* | | | | | Data[19-22]: buffer_tail | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x0A | Data[0]: Audio Device Index | Open an Audio RX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x0B | Data[0]: Audio Device Index | Start an Audio RX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x0C | Data[0]: Audio Device Index | Pause an Audio RX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x0D | Data[0]: Audio Device Index | Resume an Audio RX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x0E | Data[0]: Audio Device Index | Terminate an Audio RX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x0F | Data[0]: Audio Device Index | Close an Audio RX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x10 | Data[0]: Audio Device Index | Set Parameters for an Audio RX Instance. |
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* | | | | | Data[1]: format | |
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* | | | | | Data[2]: channels | |
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* | | | | | Data[3-6]: samplerate | |
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* | | | | | Data[7-22]: reserved | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x11 | Data[0]: Audio Device Index | Set Audio RX Buffer. |
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* | | | | | Data[1-6]: reserved | |
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* | | | | | Data[7-10]: buffer_addr | |
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* | | | | | Data[11-14]: buffer_size | |
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* | | | | | Data[15-18]: period_size | |
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* | | | | | Data[19-22]: buffer_tail | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x12 | Data[0]: Audio Device Index | Suspend an Audio RX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x13 | Data[0]: Audio Device Index | Resume an Audio RX Instance. |
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* | | | | | Data[1]: format | |
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* | | | | | Data[2]: channels | |
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* | | | | | Data[3-6]: samplerate | |
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* | | | | | Data[7-10]: buffer_addr | |
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* | | | | | Data[11-14]: buffer_size | |
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* | | | | | Data[15-18]: period_size | |
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* | | | | | Data[19-22]: buffer_tail | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x14 | Data[0]: Audio Device Index | Set register value to codec. |
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* | | | | | Data[1-6]: reserved | |
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* | | | | | Data[7-10]: register | |
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* | | | | | Data[11-14]: value | |
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* | | | | | Data[15-22]: reserved | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x15 | Data[0]: Audio Device Index | Get register value from codec. |
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* | | | | | Data[1-6]: reserved | |
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* | | | | | Data[7-10]: register | |
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* | | | | | Data[11-22]: reserved | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* Note 1: See <List of Sample Format> for available value of
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* Sample Format;
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* Note 2: See <List of Audio Channels> for available value of Channels;
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* Note 3: Sample Rate of Set Parameters for an Audio TX Instance
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* Command and Set Parameters for an Audio RX Instance Command is
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* in little-endian format.
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*
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* SRTM Audio Control Category Response Command Table:
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | Category | Version | Type | Command | Data | Function |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x00 | Data[0]: Audio Device Index | Reply for Open an Audio TX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x01 | Data[0]: Audio Device Index | Reply for Start an Audio TX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x02 | Data[0]: Audio Device Index | Reply for Pause an Audio TX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x03 | Data[0]: Audio Device Index | Reply for Resume an Audio TX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x04 | Data[0]: Audio Device Index | Reply for Terminate an Audio TX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x05 | Data[0]: Audio Device Index | Reply for Close an Audio TX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x06 | Data[0]: Audio Device Index | Reply for Set Parameters for an Audio |
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* | | | | | Data[1]: Return code | TX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x07 | Data[0]: Audio Device Index | Reply for Set Audio TX Buffer. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x08 | Data[0]: Audio Device Index | Reply for Suspend an Audio TX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x09 | Data[0]: Audio Device Index | Reply for Resume an Audio TX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0A | Data[0]: Audio Device Index | Reply for Open an Audio RX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0B | Data[0]: Audio Device Index | Reply for Start an Audio RX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0C | Data[0]: Audio Device Index | Reply for Pause an Audio RX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0D | Data[0]: Audio Device Index | Reply for Resume an Audio RX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0E | Data[0]: Audio Device Index | Reply for Terminate an Audio RX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0F | Data[0]: Audio Device Index | Reply for Close an Audio RX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x10 | Data[0]: Audio Device Index | Reply for Set Parameters for an Audio |
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* | | | | | Data[1]: Return code | RX Instance. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x11 | Data[0]: Audio Device Index | Reply for Set Audio RX Buffer. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x12 | Data[0]: Audio Device Index | Reply for Supend an Audio RX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x13 | Data[0]: Audio Device Index | Reply for Resume an Audio RX Instance. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x14 | Data[0]: Audio Device Index | Reply for Set codec register value. |
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* | | | | | Data[1]: Return code | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x15 | Data[0]: Audio Device Index | Reply for Get codec register value. |
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* | | | | | Data[1]: Return code | |
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* | | | | | Data[2-6]: reserved | |
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* | | | | | Data[7-10]: register | |
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* | | | | | Data[11-14]: value | |
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* | | | | | Data[15-22]: reserved | |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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*
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* SRTM Audio Control Category Notification Command Table:
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | Category | Version | Type | Command | Data | Function |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x02 | 0x00 | Data[0]: Audio Device Index | Notify one TX period is finished. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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* | 0x03 | 0x0100 | 0x02 | 0x01 | Data[0]: Audio Device Index | Notify one RX period is finished. |
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* +------------+---------+------+---------+-------------------------------+------------------------------------------------+
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*
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* List of Sample Format:
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* +--------------------+----------------------------------------------+
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* | Sample Format | Description |
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* +--------------------+----------------------------------------------+
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* | 0x0 | S16_LE |
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* +--------------------+----------------------------------------------+
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* | 0x1 | S24_LE |
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* +--------------------+----------------------------------------------+
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*
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* List of Audio Channels
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* +--------------------+----------------------------------------------+
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* | Audio Channel | Description |
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* +--------------------+----------------------------------------------+
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* | 0x0 | Left Channel |
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* +--------------------+----------------------------------------------+
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* | 0x1 | Right Channel |
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* +--------------------+----------------------------------------------+
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* | 0x2 | Left & Right Channel |
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* +--------------------+----------------------------------------------+
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*
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*/
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#ifndef __FSL_RPMSG_I2S_H
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#define __FSL_RPMSG_I2S_H
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#include <linux/pm_qos.h>
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#include <linux/imx_rpmsg.h>
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#include <linux/interrupt.h>
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#include <sound/dmaengine_pcm.h>
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#define RPMSG_TIMEOUT 1000
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#define I2S_TX_OPEN 0x0
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#define I2S_TX_START 0x1
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#define I2S_TX_PAUSE 0x2
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#define I2S_TX_RESTART 0x3
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#define I2S_TX_TERMINATE 0x4
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#define I2S_TX_CLOSE 0x5
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#define I2S_TX_HW_PARAM 0x6
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#define I2S_TX_BUFFER 0x7
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#define I2S_TX_SUSPEND 0x8
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#define I2S_TX_RESUME 0x9
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#define I2S_RX_OPEN 0xA
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#define I2S_RX_START 0xB
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#define I2S_RX_PAUSE 0xC
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#define I2S_RX_RESTART 0xD
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#define I2S_RX_TERMINATE 0xE
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#define I2S_RX_CLOSE 0xF
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#define I2S_RX_HW_PARAM 0x10
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#define I2S_RX_BUFFER 0x11
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#define I2S_RX_SUSPEND 0x12
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#define I2S_RX_RESUME 0x13
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#define SET_CODEC_VALUE 0x14
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#define GET_CODEC_VALUE 0x15
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#define I2S_TX_POINTER 0x16
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#define I2S_RX_POINTER 0x17
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#define I2S_TYPE_A_NUM 0x18
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#define WORK_MAX_NUM 0x30
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#define I2S_TX_PERIOD_DONE 0x0
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#define I2S_RX_PERIOD_DONE 0x1
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#define I2S_TYPE_C_NUM 0x2
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#define I2S_CMD_MAX_NUM (I2S_TYPE_A_NUM + I2S_TYPE_C_NUM)
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#define I2S_TYPE_A 0x0
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#define I2S_TYPE_B 0x1
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#define I2S_TYPE_C 0x2
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#define I2S_RESP_NONE 0x0
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#define I2S_RESP_NOT_ALLOWED 0x1
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#define I2S_RESP_SUCCESS 0x2
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#define I2S_RESP_FAILED 0x3
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#define RPMSG_S16_LE 0x0
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#define RPMSG_S24_LE 0x1
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#define RPMSG_S32_LE 0x2
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#define RPMSG_DSD_U16_LE 0x3
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#define RPMSG_DSD_U24_LE 0x4
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#define RPMSG_DSD_U32_LE 0x5
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#define RPMSG_CH_LEFT 0x0
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#define RPMSG_CH_RIGHT 0x1
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#define RPMSG_CH_STEREO 0x2
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struct i2s_param_s {
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unsigned char audioindex;
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unsigned char format;
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unsigned char channels;
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unsigned int rate;
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unsigned int buffer_addr; /* Register for SET_CODEC_VALUE*/
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unsigned int buffer_size; /* register value for SET_CODEC_VALUE*/
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unsigned int period_size;
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unsigned int buffer_tail;
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} __packed;
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struct i2s_param_r {
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unsigned char audioindex;
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unsigned char resp;
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unsigned char reserved1[1];
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unsigned int buffer_offset; /* the consumed offset of buffer*/
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unsigned int reg_addr;
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unsigned int reg_data;
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unsigned char reserved2[4];
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unsigned int buffer_tail;
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} __packed;
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/* struct of send message */
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struct i2s_rpmsg_s {
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struct imx_rpmsg_head header;
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struct i2s_param_s param;
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};
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/* struct of received message */
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struct i2s_rpmsg_r {
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struct imx_rpmsg_head header;
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struct i2s_param_r param;
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};
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struct i2s_rpmsg {
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struct i2s_rpmsg_s send_msg;
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struct i2s_rpmsg_r recv_msg;
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};
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struct work_of_rpmsg {
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struct i2s_info *i2s_info;
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/* sent msg for each work */
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struct i2s_rpmsg msg;
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struct work_struct work;
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|
};
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|
|
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struct stream_timer {
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|
struct timer_list timer;
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struct snd_pcm_substream *substream;
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|
};
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typedef void (*dma_callback)(void *arg);
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struct i2s_info {
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struct rpmsg_device *rpdev;
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struct device *dev;
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struct completion cmd_complete;
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|
|
|
/* received msg (global) */
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struct i2s_rpmsg_r recv_msg;
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|
|
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struct i2s_rpmsg rpmsg[I2S_CMD_MAX_NUM];
|
|
struct i2s_rpmsg period_done_msg[2];
|
|
bool period_done_msg_enabled[2];
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|
|
|
struct workqueue_struct *rpmsg_wq;
|
|
struct work_of_rpmsg work_list[WORK_MAX_NUM];
|
|
int work_write_index;
|
|
int work_read_index;
|
|
int msg_drop_count[2];
|
|
int num_period[2];
|
|
void *callback_param[2];
|
|
int (*send_message)(struct i2s_rpmsg *msg, struct i2s_info *info);
|
|
dma_callback callback[2];
|
|
spinlock_t lock[2];
|
|
spinlock_t wq_lock;
|
|
struct mutex tx_lock;
|
|
struct mutex i2c_lock;
|
|
struct stream_timer stream_timer[2];
|
|
int prealloc_buffer_size;
|
|
};
|
|
|
|
struct fsl_rpmsg_i2s {
|
|
struct platform_device *pdev;
|
|
struct i2s_info i2s_info;
|
|
struct pm_qos_request pm_qos_req;
|
|
int codec_dummy;
|
|
int codec_wm8960;
|
|
int codec_cs42888;
|
|
int codec_ak4497;
|
|
int codec_in_dt;
|
|
int force_lpa;
|
|
int version;
|
|
int rates;
|
|
u64 formats;
|
|
int enable_lpa;
|
|
};
|
|
|
|
#define RPMSG_CODEC_DRV_NAME_WM8960 "rpmsg-audio-codec-wm8960"
|
|
#define RPMSG_CODEC_DRV_NAME_CS42888 "rpmsg-audio-codec-cs42888"
|
|
#define RPMSG_CODEC_DRV_NAME_AK4497 "rpmsg-audio-codec-ak4497"
|
|
|
|
struct fsl_rpmsg_codec {
|
|
int audioindex;
|
|
|
|
/*property for wm8960*/
|
|
bool capless;
|
|
bool shared_lrclk;
|
|
|
|
/*property for cs42xx8*/
|
|
|
|
char name[32];
|
|
int num_adcs;
|
|
};
|
|
|
|
#endif /* __FSL_RPMSG_I2S_H */
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