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linux/sound/soc/fsl/imx-pcm-rpmsg.h

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ASoC: imx-pcm-rpmsg: Add platform driver for audio base on rpmsg Platform driver based on rpmsg is the interface for sending and receiving rpmsg to and from M core. It will tell the Cortex-M core sound format/rate/channel, where is the data buffer, where is the period size, when to start, when to stop and when suspend or resume happen, each this behavior there is defined rpmsg command. Especially we designed the low power audio case, that is to allocate a large buffer and fill the data, then Cortex-A core can go to sleep mode, Cortex-M core continue to play the sound, when the buffer is consumed, Cortex-M core will trigger the Cortex-A core to wake up. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Link: https://lore.kernel.org/r/1615516725-4975-6-git-send-email-shengjiu.wang@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-12 02:38:44 +00:00
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2017-2021 NXP
*
******************************************************************************
* Communication stack of audio with rpmsg
******************************************************************************
* Packet structure:
* A SRTM message consists of a 10 bytes header followed by 0~N bytes of data
*
* +---------------+-------------------------------+
* | | Content |
* +---------------+-------------------------------+
* | Byte Offset | 7 6 5 4 3 2 1 0 |
* +---------------+---+---+---+---+---+---+---+---+
* | 0 | Category |
* +---------------+---+---+---+---+---+---+---+---+
* | 1 ~ 2 | Version |
* +---------------+---+---+---+---+---+---+---+---+
* | 3 | Type |
* +---------------+---+---+---+---+---+---+---+---+
* | 4 | Command |
* +---------------+---+---+---+---+---+---+---+---+
* | 5 | Reserved0 |
* +---------------+---+---+---+---+---+---+---+---+
* | 6 | Reserved1 |
* +---------------+---+---+---+---+---+---+---+---+
* | 7 | Reserved2 |
* +---------------+---+---+---+---+---+---+---+---+
* | 8 | Reserved3 |
* +---------------+---+---+---+---+---+---+---+---+
* | 9 | Reserved4 |
* +---------------+---+---+---+---+---+---+---+---+
* | 10 | DATA 0 |
* +---------------+---+---+---+---+---+---+---+---+
* : : : : : : : : : : : : :
* +---------------+---+---+---+---+---+---+---+---+
* | N + 10 - 1 | DATA N-1 |
* +---------------+---+---+---+---+---+---+---+---+
*
* +----------+------------+------------------------------------------------+
* | Field | Byte | |
* +----------+------------+------------------------------------------------+
* | Category | 0 | The destination category. |
* +----------+------------+------------------------------------------------+
* | Version | 1 ~ 2 | The category version of the sender of the |
* | | | packet. |
* | | | The first byte represent the major version of |
* | | | the packet.The second byte represent the minor |
* | | | version of the packet. |
* +----------+------------+------------------------------------------------+
* | Type | 3 | The message type of current message packet. |
* +----------+------------+------------------------------------------------+
* | Command | 4 | The command byte sent to remote processor/SoC. |
* +----------+------------+------------------------------------------------+
* | Reserved | 5 ~ 9 | Reserved field for future extension. |
* +----------+------------+------------------------------------------------+
* | Data | N | The data payload of the message packet. |
* +----------+------------+------------------------------------------------+
*
* Audio control:
* SRTM Audio Control Category Request Command Table:
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | Category | Version | Type | Command | Data | Function |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x00 | Data[0]: Audio Device Index | Open a TX Instance. |
* | | | | | Data[1]: format | |
* | | | | | Data[2]: channels | |
* | | | | | Data[3-6]: samplerate | |
* | | | | | Data[7-10]: buffer_addr | |
* | | | | | Data[11-14]: buffer_size | |
* | | | | | Data[15-18]: period_size | |
* | | | | | Data[19-22]: buffer_tail | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x01 | Data[0]: Audio Device Index | Start a TX Instance. |
* | | | | | Same as above command | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x02 | Data[0]: Audio Device Index | Pause a TX Instance. |
* | | | | | Same as above command | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x03 | Data[0]: Audio Device Index | Resume a TX Instance. |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x04 | Data[0]: Audio Device Index | Stop a TX Instance. |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x05 | Data[0]: Audio Device Index | Close a TX Instance. |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x06 | Data[0]: Audio Device Index | Set Parameters for |
* | | | | | Data[1]: format | a TX Instance. |
* | | | | | Data[2]: channels | |
* | | | | | Data[3-6]: samplerate | |
* | | | | | Data[7-22]: reserved | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x07 | Data[0]: Audio Device Index | Set TX Buffer. |
* | | | | | Data[1-6]: reserved | |
* | | | | | Data[7-10]: buffer_addr | |
* | | | | | Data[11-14]: buffer_size | |
* | | | | | Data[15-18]: period_size | |
* | | | | | Data[19-22]: buffer_tail | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x08 | Data[0]: Audio Device Index | Suspend a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x09 | Data[0]: Audio Device Index | Resume a TX Instance. |
* | | | | | Data[1]: format | |
* | | | | | Data[2]: channels | |
* | | | | | Data[3-6]: samplerate | |
* | | | | | Data[7-10]: buffer_addr | |
* | | | | | Data[11-14]: buffer_size | |
* | | | | | Data[15-18]: period_size | |
* | | | | | Data[19-22]: buffer_tail | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x0A | Data[0]: Audio Device Index | Open a RX Instance. |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x0B | Data[0]: Audio Device Index | Start a RX Instance. |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x0C | Data[0]: Audio Device Index | Pause a RX Instance. |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x0D | Data[0]: Audio Device Index | Resume a RX Instance. |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x0E | Data[0]: Audio Device Index | Stop a RX Instance. |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x0F | Data[0]: Audio Device Index | Close a RX Instance. |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x10 | Data[0]: Audio Device Index | Set Parameters for |
* | | | | | Data[1]: format | a RX Instance. |
* | | | | | Data[2]: channels | |
* | | | | | Data[3-6]: samplerate | |
* | | | | | Data[7-22]: reserved | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x11 | Data[0]: Audio Device Index | Set RX Buffer. |
* | | | | | Data[1-6]: reserved | |
* | | | | | Data[7-10]: buffer_addr | |
* | | | | | Data[11-14]: buffer_size | |
* | | | | | Data[15-18]: period_size | |
* | | | | | Data[19-22]: buffer_tail | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x12 | Data[0]: Audio Device Index | Suspend a RX Instance.|
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x13 | Data[0]: Audio Device Index | Resume a RX Instance. |
* | | | | | Data[1]: format | |
* | | | | | Data[2]: channels | |
* | | | | | Data[3-6]: samplerate | |
* | | | | | Data[7-10]: buffer_addr | |
* | | | | | Data[11-14]: buffer_size | |
* | | | | | Data[15-18]: period_size | |
* | | | | | Data[19-22]: buffer_tail | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x14 | Data[0]: Audio Device Index | Set register value |
* | | | | | Data[1-6]: reserved | to codec |
* | | | | | Data[7-10]: register | |
* | | | | | Data[11-14]: value | |
* | | | | | Data[15-22]: reserved | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x00 | 0x15 | Data[0]: Audio Device Index | Get register value |
* | | | | | Data[1-6]: reserved | from codec |
* | | | | | Data[7-10]: register | |
* | | | | | Data[11-22]: reserved | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* Note 1: See <List of Sample Format> for available value of
* Sample Format;
* Note 2: See <List of Audio Channels> for available value of Channels;
* Note 3: Sample Rate of Set Parameters for an Audio TX Instance
* Command and Set Parameters for an Audio RX Instance Command is
* in little-endian format.
*
* SRTM Audio Control Category Response Command Table:
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | Category | Version | Type | Command | Data | Function |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x00 | Data[0]: Audio Device Index | Reply for Open |
* | | | | | Data[1]: Return code | a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x01 | Data[0]: Audio Device Index | Reply for Start |
* | | | | | Data[1]: Return code | a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x02 | Data[0]: Audio Device Index | Reply for Pause |
* | | | | | Data[1]: Return code | a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x03 | Data[0]: Audio Device Index | Reply for Resume |
* | | | | | Data[1]: Return code | a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x04 | Data[0]: Audio Device Index | Reply for Stop |
* | | | | | Data[1]: Return code | a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x05 | Data[0]: Audio Device Index | Reply for Close |
* | | | | | Data[1]: Return code | a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x06 | Data[0]: Audio Device Index | Reply for Set Param |
* | | | | | Data[1]: Return code | for a TX Instance. |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x07 | Data[0]: Audio Device Index | Reply for Set |
* | | | | | Data[1]: Return code | TX Buffer |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x08 | Data[0]: Audio Device Index | Reply for Suspend |
* | | | | | Data[1]: Return code | a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x09 | Data[0]: Audio Device Index | Reply for Resume |
* | | | | | Data[1]: Return code | a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x0A | Data[0]: Audio Device Index | Reply for Open |
* | | | | | Data[1]: Return code | a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x0B | Data[0]: Audio Device Index | Reply for Start |
* | | | | | Data[1]: Return code | a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x0C | Data[0]: Audio Device Index | Reply for Pause |
* | | | | | Data[1]: Return code | a TX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x0D | Data[0]: Audio Device Index | Reply for Resume |
* | | | | | Data[1]: Return code | a RX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x0E | Data[0]: Audio Device Index | Reply for Stop |
* | | | | | Data[1]: Return code | a RX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x0F | Data[0]: Audio Device Index | Reply for Close |
* | | | | | Data[1]: Return code | a RX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x10 | Data[0]: Audio Device Index | Reply for Set Param |
* | | | | | Data[1]: Return code | for a RX Instance. |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x11 | Data[0]: Audio Device Index | Reply for Set |
* | | | | | Data[1]: Return code | RX Buffer |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x12 | Data[0]: Audio Device Index | Reply for Suspend |
* | | | | | Data[1]: Return code | a RX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x13 | Data[0]: Audio Device Index | Reply for Resume |
* | | | | | Data[1]: Return code | a RX Instance |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x14 | Data[0]: Audio Device Index | Reply for Set codec |
* | | | | | Data[1]: Return code | register value |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x01 | 0x15 | Data[0]: Audio Device Index | Reply for Get codec |
* | | | | | Data[1]: Return code | register value |
* | | | | | Data[2-6]: reserved | |
* | | | | | Data[7-10]: register | |
* | | | | | Data[11-14]: value | |
* | | | | | Data[15-22]: reserved | |
* +----------+---------+------+---------+-------------------------------+-----------------------+
*
* SRTM Audio Control Category Notification Command Table:
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | Category | Version | Type | Command | Data | Function |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x02 | 0x00 | Data[0]: Audio Device Index | Notify one TX period |
* | | | | | | is finished |
* +----------+---------+------+---------+-------------------------------+-----------------------+
* | 0x03 | 0x0100 | 0x02 | 0x01 | Data[0]: Audio Device Index | Notify one RX period |
* | | | | | | is finished |
* +----------+---------+------+---------+-------------------------------+-----------------------+
*
* List of Sample Format:
* +------------------+-----------------------+
* | Sample Format | Description |
* +------------------+-----------------------+
* | 0x0 | S16_LE |
* +------------------+-----------------------+
* | 0x1 | S24_LE |
* +------------------+-----------------------+
*
* List of Audio Channels
* +------------------+-----------------------+
* | Audio Channel | Description |
* +------------------+-----------------------+
* | 0x0 | Left Channel |
* +------------------+-----------------------+
* | 0x1 | Right Channel |
* +------------------+---------------- ------+
* | 0x2 | Left & Right Channel |
* +------------------+-----------------------+
*
*/
#ifndef _IMX_PCM_RPMSG_H
#define _IMX_PCM_RPMSG_H
#include <linux/pm_qos.h>
#include <linux/interrupt.h>
#include <sound/dmaengine_pcm.h>
#define RPMSG_TIMEOUT 1000
/* RPMSG Command (TYPE A)*/
#define TX_OPEN 0x0
#define TX_START 0x1
#define TX_PAUSE 0x2
#define TX_RESTART 0x3
#define TX_TERMINATE 0x4
#define TX_CLOSE 0x5
#define TX_HW_PARAM 0x6
#define TX_BUFFER 0x7
#define TX_SUSPEND 0x8
#define TX_RESUME 0x9
#define RX_OPEN 0xA
#define RX_START 0xB
#define RX_PAUSE 0xC
#define RX_RESTART 0xD
#define RX_TERMINATE 0xE
#define RX_CLOSE 0xF
#define RX_HW_PARAM 0x10
#define RX_BUFFER 0x11
#define RX_SUSPEND 0x12
#define RX_RESUME 0x13
#define SET_CODEC_VALUE 0x14
#define GET_CODEC_VALUE 0x15
#define TX_POINTER 0x16
#define RX_POINTER 0x17
/* Total msg numver for type A */
#define MSG_TYPE_A_NUM 0x18
/* RPMSG Command (TYPE C)*/
#define TX_PERIOD_DONE 0x0
#define RX_PERIOD_DONE 0x1
/* Total msg numver for type C */
#define MSG_TYPE_C_NUM 0x2
#define MSG_MAX_NUM (MSG_TYPE_A_NUM + MSG_TYPE_C_NUM)
#define MSG_TYPE_A 0x0
#define MSG_TYPE_B 0x1
#define MSG_TYPE_C 0x2
#define RESP_NONE 0x0
#define RESP_NOT_ALLOWED 0x1
#define RESP_SUCCESS 0x2
#define RESP_FAILED 0x3
#define RPMSG_S16_LE 0x0
#define RPMSG_S24_LE 0x1
#define RPMSG_S32_LE 0x2
ASoC: imx-pcm-rpmsg: Fix warning of incorrect type in assignment 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: 3c00eceb2a53 ("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>
2021-05-06 02:30:40 +00:00
#define RPMSG_DSD_U16_LE 49 /* SNDRV_PCM_FORMAT_DSD_U16_LE */
ASoC: imx-pcm-rpmsg: Add platform driver for audio base on rpmsg Platform driver based on rpmsg is the interface for sending and receiving rpmsg to and from M core. It will tell the Cortex-M core sound format/rate/channel, where is the data buffer, where is the period size, when to start, when to stop and when suspend or resume happen, each this behavior there is defined rpmsg command. Especially we designed the low power audio case, that is to allocate a large buffer and fill the data, then Cortex-A core can go to sleep mode, Cortex-M core continue to play the sound, when the buffer is consumed, Cortex-M core will trigger the Cortex-A core to wake up. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Link: https://lore.kernel.org/r/1615516725-4975-6-git-send-email-shengjiu.wang@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-12 02:38:44 +00:00
#define RPMSG_DSD_U24_LE 0x4
ASoC: imx-pcm-rpmsg: Fix warning of incorrect type in assignment 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: 3c00eceb2a53 ("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>
2021-05-06 02:30:40 +00:00
#define RPMSG_DSD_U32_LE 50 /* SNDRV_PCM_FORMAT_DSD_U32_LE */
ASoC: imx-pcm-rpmsg: Add platform driver for audio base on rpmsg Platform driver based on rpmsg is the interface for sending and receiving rpmsg to and from M core. It will tell the Cortex-M core sound format/rate/channel, where is the data buffer, where is the period size, when to start, when to stop and when suspend or resume happen, each this behavior there is defined rpmsg command. Especially we designed the low power audio case, that is to allocate a large buffer and fill the data, then Cortex-A core can go to sleep mode, Cortex-M core continue to play the sound, when the buffer is consumed, Cortex-M core will trigger the Cortex-A core to wake up. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Link: https://lore.kernel.org/r/1615516725-4975-6-git-send-email-shengjiu.wang@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-12 02:38:44 +00:00
#define RPMSG_CH_LEFT 0x0
#define RPMSG_CH_RIGHT 0x1
#define RPMSG_CH_STEREO 0x2
#define WORK_MAX_NUM 0x30
/* Category define */
#define IMX_RMPSG_LIFECYCLE 1
#define IMX_RPMSG_PMIC 2
#define IMX_RPMSG_AUDIO 3
#define IMX_RPMSG_KEY 4
#define IMX_RPMSG_GPIO 5
#define IMX_RPMSG_RTC 6
#define IMX_RPMSG_SENSOR 7
/* rpmsg version */
#define IMX_RMPSG_MAJOR 1
#define IMX_RMPSG_MINOR 0
#define TX SNDRV_PCM_STREAM_PLAYBACK
#define RX SNDRV_PCM_STREAM_CAPTURE
/**
* struct rpmsg_head: rpmsg header structure
*
* @cate: category
* @major: major version
* @minor: minor version
* @type: message type (A/B/C)
* @cmd: message command
* @reserved: reserved space
*/
struct rpmsg_head {
u8 cate;
u8 major;
u8 minor;
u8 type;
u8 cmd;
u8 reserved[5];
} __packed;
/**
* struct param_s: sent rpmsg parameter
*
* @audioindex: audio instance index
* @format: audio format
* @channels: audio channel number
* @rate: sample rate
* @buffer_addr: dma buffer physical address or register for SET_CODEC_VALUE
* @buffer_size: dma buffer size or register value for SET_CODEC_VALUE
* @period_size: period size
* @buffer_tail: current period index
*/
struct param_s {
unsigned char audioindex;
unsigned char format;
unsigned char channels;
unsigned int rate;
unsigned int buffer_addr;
unsigned int buffer_size;
unsigned int period_size;
unsigned int buffer_tail;
} __packed;
/**
* struct param_s: send rpmsg parameter
*
* @audioindex: audio instance index
* @resp: response value
* @reserved1: reserved space
* @buffer_offset: the consumed offset of buffer
* @reg_addr: register addr of codec
* @reg_data: register value of codec
* @reserved2: reserved space
* @buffer_tail: current period index
*/
struct param_r {
unsigned char audioindex;
unsigned char resp;
unsigned char reserved1[1];
unsigned int buffer_offset;
unsigned int reg_addr;
unsigned int reg_data;
unsigned char reserved2[4];
unsigned int buffer_tail;
} __packed;
/* Struct of sent message */
struct rpmsg_s_msg {
struct rpmsg_head header;
struct param_s param;
};
/* Struct of received message */
struct rpmsg_r_msg {
struct rpmsg_head header;
struct param_r param;
};
/* Struct of rpmsg */
struct rpmsg_msg {
struct rpmsg_s_msg s_msg;
struct rpmsg_r_msg r_msg;
};
/* Struct of rpmsg for workqueue */
struct work_of_rpmsg {
struct rpmsg_info *info;
/* Sent msg for each work */
struct rpmsg_msg msg;
struct work_struct work;
};
/* Struct of timer */
struct stream_timer {
struct timer_list timer;
struct rpmsg_info *info;
struct snd_pcm_substream *substream;
};
typedef void (*dma_callback)(void *arg);
/**
* struct rpmsg_info: rpmsg audio information
*
* @rpdev: pointer of rpmsg_device
* @dev: pointer for imx_pcm_rpmsg device
* @cmd_complete: command is finished
* @pm_qos_req: request of pm qos
* @r_msg: received rpmsg
* @msg: array of rpmsg
* @notify: notification msg (type C) for TX & RX
* @notify_updated: notification flag for TX & RX
* @rpmsg_wq: rpmsg workqueue
* @work_list: array of work list for workqueue
* @work_write_index: write index of work list
* @work_read_index: read index of work list
* @msg_drop_count: counter of dropped msg for TX & RX
* @num_period: period number for TX & RX
* @callback_param: parameter for period elapse callback for TX & RX
* @callback: period elapse callback for TX & RX
* @send_message: function pointer for send message
* @lock: spin lock for TX & RX
* @wq_lock: lock for work queue
* @msg_lock: lock for send message
* @stream_timer: timer for tigger workqueue
*/
struct rpmsg_info {
struct rpmsg_device *rpdev;
struct device *dev;
struct completion cmd_complete;
struct pm_qos_request pm_qos_req;
/* Received msg (global) */
struct rpmsg_r_msg r_msg;
struct rpmsg_msg msg[MSG_MAX_NUM];
/* period done */
struct rpmsg_msg notify[2];
bool notify_updated[2];
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];
dma_callback callback[2];
int (*send_message)(struct rpmsg_msg *msg, struct rpmsg_info *info);
spinlock_t lock[2]; /* spin lock for resource protection */
spinlock_t wq_lock; /* spin lock for resource protection */
struct mutex msg_lock; /* mutex for resource protection */
struct stream_timer stream_timer[2];
};
#define IMX_PCM_DRV_NAME "imx_pcm_rpmsg"
#endif /* IMX_PCM_RPMSG_H */
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