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a387040ab4
The format in rpmsg is defained as unsigned char, there is warning
when convert snd_pcm_format_t to it.
sound/soc/fsl/imx-pcm-rpmsg.c:164:43: sparse: warning: incorrect type in assignment (different base types)
sound/soc/fsl/imx-pcm-rpmsg.c:164:43: sparse: expected unsigned char format
sound/soc/fsl/imx-pcm-rpmsg.c:164:43: sparse: got restricted snd_pcm_format_t [usertype]
sound/soc/fsl/imx-pcm-rpmsg.c:167:43: sparse: warning: incorrect type in assignment (different base types)
sound/soc/fsl/imx-pcm-rpmsg.c:167:43: sparse: expected unsigned char format
sound/soc/fsl/imx-pcm-rpmsg.c:167:43: sparse: got restricted snd_pcm_format_t [usertype]
Refine the unused RPMSG_DSD_U16_LE and RPMSG_DSD_U32_LE for these
case to fix this sparse warning.
Fixes: 3c00eceb2a ("ASoC: imx-pcm-rpmsg: Add platform driver for audio base on rpmsg")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1620268240-1005-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
513 lines
28 KiB
C
513 lines
28 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright 2017-2021 NXP
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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 a 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 a 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 a 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 a TX Instance. |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x04 | Data[0]: Audio Device Index | Stop a TX Instance. |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x05 | Data[0]: Audio Device Index | Close a TX Instance. |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x06 | Data[0]: Audio Device Index | Set Parameters for |
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* | | | | | Data[1]: format | a TX Instance. |
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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 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 a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x09 | Data[0]: Audio Device Index | Resume a 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 a RX Instance. |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x0B | Data[0]: Audio Device Index | Start a RX Instance. |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x0C | Data[0]: Audio Device Index | Pause a RX Instance. |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x0D | Data[0]: Audio Device Index | Resume a RX Instance. |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x0E | Data[0]: Audio Device Index | Stop a RX Instance. |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x0F | Data[0]: Audio Device Index | Close a RX Instance. |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x10 | Data[0]: Audio Device Index | Set Parameters for |
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* | | | | | Data[1]: format | a RX Instance. |
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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 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 a RX Instance.|
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x00 | 0x13 | Data[0]: Audio Device Index | Resume a 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 |
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* | | | | | Data[1-6]: reserved | to codec |
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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 |
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* | | | | | Data[1-6]: reserved | from codec |
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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 |
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* | | | | | Data[1]: Return code | a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x01 | Data[0]: Audio Device Index | Reply for Start |
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* | | | | | Data[1]: Return code | a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x02 | Data[0]: Audio Device Index | Reply for Pause |
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* | | | | | Data[1]: Return code | a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x03 | Data[0]: Audio Device Index | Reply for Resume |
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* | | | | | Data[1]: Return code | a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x04 | Data[0]: Audio Device Index | Reply for Stop |
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* | | | | | Data[1]: Return code | a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x05 | Data[0]: Audio Device Index | Reply for Close |
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* | | | | | Data[1]: Return code | a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x06 | Data[0]: Audio Device Index | Reply for Set Param |
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* | | | | | Data[1]: Return code | for a TX Instance. |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x07 | Data[0]: Audio Device Index | Reply for Set |
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* | | | | | Data[1]: Return code | TX Buffer |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x08 | Data[0]: Audio Device Index | Reply for Suspend |
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* | | | | | Data[1]: Return code | a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x09 | Data[0]: Audio Device Index | Reply for Resume |
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* | | | | | Data[1]: Return code | a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0A | Data[0]: Audio Device Index | Reply for Open |
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* | | | | | Data[1]: Return code | a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0B | Data[0]: Audio Device Index | Reply for Start |
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* | | | | | Data[1]: Return code | a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0C | Data[0]: Audio Device Index | Reply for Pause |
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* | | | | | Data[1]: Return code | a TX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0D | Data[0]: Audio Device Index | Reply for Resume |
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* | | | | | Data[1]: Return code | a RX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0E | Data[0]: Audio Device Index | Reply for Stop |
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* | | | | | Data[1]: Return code | a RX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x0F | Data[0]: Audio Device Index | Reply for Close |
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* | | | | | Data[1]: Return code | a RX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x10 | Data[0]: Audio Device Index | Reply for Set Param |
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* | | | | | Data[1]: Return code | for a RX Instance. |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x11 | Data[0]: Audio Device Index | Reply for Set |
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* | | | | | Data[1]: Return code | RX Buffer |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x12 | Data[0]: Audio Device Index | Reply for Suspend |
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* | | | | | Data[1]: Return code | a RX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x13 | Data[0]: Audio Device Index | Reply for Resume |
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* | | | | | Data[1]: Return code | a RX Instance |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x14 | Data[0]: Audio Device Index | Reply for Set codec |
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* | | | | | Data[1]: Return code | register value |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x01 | 0x15 | Data[0]: Audio Device Index | Reply for Get codec |
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* | | | | | Data[1]: Return code | register value |
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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 |
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* | | | | | | is finished |
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* +----------+---------+------+---------+-------------------------------+-----------------------+
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* | 0x03 | 0x0100 | 0x02 | 0x01 | Data[0]: Audio Device Index | Notify one RX period |
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* | | | | | | 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 _IMX_PCM_RPMSG_H
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#define _IMX_PCM_RPMSG_H
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#include <linux/pm_qos.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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/* RPMSG Command (TYPE A)*/
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#define TX_OPEN 0x0
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#define TX_START 0x1
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#define TX_PAUSE 0x2
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#define TX_RESTART 0x3
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#define TX_TERMINATE 0x4
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#define TX_CLOSE 0x5
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#define TX_HW_PARAM 0x6
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#define TX_BUFFER 0x7
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#define TX_SUSPEND 0x8
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#define TX_RESUME 0x9
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#define RX_OPEN 0xA
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#define RX_START 0xB
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#define RX_PAUSE 0xC
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#define RX_RESTART 0xD
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#define RX_TERMINATE 0xE
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#define RX_CLOSE 0xF
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#define RX_HW_PARAM 0x10
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#define RX_BUFFER 0x11
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#define RX_SUSPEND 0x12
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#define 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 TX_POINTER 0x16
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#define RX_POINTER 0x17
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/* Total msg numver for type A */
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#define MSG_TYPE_A_NUM 0x18
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/* RPMSG Command (TYPE C)*/
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#define TX_PERIOD_DONE 0x0
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#define RX_PERIOD_DONE 0x1
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/* Total msg numver for type C */
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#define MSG_TYPE_C_NUM 0x2
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#define MSG_MAX_NUM (MSG_TYPE_A_NUM + MSG_TYPE_C_NUM)
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#define MSG_TYPE_A 0x0
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#define MSG_TYPE_B 0x1
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#define MSG_TYPE_C 0x2
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#define RESP_NONE 0x0
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#define RESP_NOT_ALLOWED 0x1
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#define RESP_SUCCESS 0x2
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#define 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 49 /* SNDRV_PCM_FORMAT_DSD_U16_LE */
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#define RPMSG_DSD_U24_LE 0x4
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#define RPMSG_DSD_U32_LE 50 /* SNDRV_PCM_FORMAT_DSD_U32_LE */
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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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#define WORK_MAX_NUM 0x30
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/* Category define */
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#define IMX_RMPSG_LIFECYCLE 1
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#define IMX_RPMSG_PMIC 2
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#define IMX_RPMSG_AUDIO 3
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#define IMX_RPMSG_KEY 4
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#define IMX_RPMSG_GPIO 5
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#define IMX_RPMSG_RTC 6
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#define IMX_RPMSG_SENSOR 7
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/* rpmsg version */
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#define IMX_RMPSG_MAJOR 1
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#define IMX_RMPSG_MINOR 0
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#define TX SNDRV_PCM_STREAM_PLAYBACK
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#define RX SNDRV_PCM_STREAM_CAPTURE
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/**
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* struct rpmsg_head: rpmsg header structure
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*
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* @cate: category
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* @major: major version
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* @minor: minor version
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* @type: message type (A/B/C)
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* @cmd: message command
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* @reserved: reserved space
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*/
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struct rpmsg_head {
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u8 cate;
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u8 major;
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u8 minor;
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u8 type;
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u8 cmd;
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u8 reserved[5];
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} __packed;
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/**
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* struct param_s: sent rpmsg parameter
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*
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* @audioindex: audio instance index
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* @format: audio format
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* @channels: audio channel number
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* @rate: sample rate
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* @buffer_addr: dma buffer physical address or register for SET_CODEC_VALUE
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* @buffer_size: dma buffer size or register value for SET_CODEC_VALUE
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* @period_size: period size
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* @buffer_tail: current period index
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*/
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struct 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;
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unsigned int buffer_size;
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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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/**
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* struct param_s: send rpmsg parameter
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*
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* @audioindex: audio instance index
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* @resp: response value
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* @reserved1: reserved space
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* @buffer_offset: the consumed offset of buffer
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* @reg_addr: register addr of codec
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* @reg_data: register value of codec
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* @reserved2: reserved space
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* @buffer_tail: current period index
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*/
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struct 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;
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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 sent message */
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struct rpmsg_s_msg {
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struct rpmsg_head header;
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struct param_s param;
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};
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/* Struct of received message */
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struct rpmsg_r_msg {
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struct rpmsg_head header;
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struct param_r param;
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};
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/* Struct of rpmsg */
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struct rpmsg_msg {
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struct rpmsg_s_msg s_msg;
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struct rpmsg_r_msg r_msg;
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};
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/* Struct of rpmsg for workqueue */
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struct work_of_rpmsg {
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struct rpmsg_info *info;
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/* Sent msg for each work */
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struct rpmsg_msg msg;
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struct work_struct work;
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};
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/* Struct of timer */
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struct stream_timer {
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struct timer_list timer;
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struct rpmsg_info *info;
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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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/**
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* struct rpmsg_info: rpmsg audio information
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*
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* @rpdev: pointer of rpmsg_device
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* @dev: pointer for imx_pcm_rpmsg device
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* @cmd_complete: command is finished
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* @pm_qos_req: request of pm qos
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* @r_msg: received rpmsg
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* @msg: array of rpmsg
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* @notify: notification msg (type C) for TX & RX
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* @notify_updated: notification flag for TX & RX
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* @rpmsg_wq: rpmsg workqueue
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* @work_list: array of work list for workqueue
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* @work_write_index: write index of work list
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* @work_read_index: read index of work list
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* @msg_drop_count: counter of dropped msg for TX & RX
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* @num_period: period number for TX & RX
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* @callback_param: parameter for period elapse callback for TX & RX
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* @callback: period elapse callback for TX & RX
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* @send_message: function pointer for send message
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* @lock: spin lock for TX & RX
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* @wq_lock: lock for work queue
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* @msg_lock: lock for send message
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* @stream_timer: timer for tigger workqueue
|
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*/
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struct rpmsg_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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struct pm_qos_request pm_qos_req;
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/* Received msg (global) */
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struct rpmsg_r_msg r_msg;
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struct rpmsg_msg msg[MSG_MAX_NUM];
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/* period done */
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struct rpmsg_msg notify[2];
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bool notify_updated[2];
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struct workqueue_struct *rpmsg_wq;
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struct work_of_rpmsg work_list[WORK_MAX_NUM];
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int work_write_index;
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int work_read_index;
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int msg_drop_count[2];
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int num_period[2];
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void *callback_param[2];
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dma_callback callback[2];
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int (*send_message)(struct rpmsg_msg *msg, struct rpmsg_info *info);
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spinlock_t lock[2]; /* spin lock for resource protection */
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spinlock_t wq_lock; /* spin lock for resource protection */
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struct mutex msg_lock; /* mutex for resource protection */
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struct stream_timer stream_timer[2];
|
|
};
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#define IMX_PCM_DRV_NAME "imx_pcm_rpmsg"
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#endif /* IMX_PCM_RPMSG_H */
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