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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /sound/soc/fsl/imx-pcm-rpmsg.h | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/soc/fsl/imx-pcm-rpmsg.h')
-rw-r--r-- | sound/soc/fsl/imx-pcm-rpmsg.h | 512 |
1 files changed, 512 insertions, 0 deletions
diff --git a/sound/soc/fsl/imx-pcm-rpmsg.h b/sound/soc/fsl/imx-pcm-rpmsg.h new file mode 100644 index 000000000..8286b55f0 --- /dev/null +++ b/sound/soc/fsl/imx-pcm-rpmsg.h @@ -0,0 +1,512 @@ +/* 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 +#define RPMSG_DSD_U16_LE 49 /* SNDRV_PCM_FORMAT_DSD_U16_LE */ +#define RPMSG_DSD_U24_LE 0x4 +#define RPMSG_DSD_U32_LE 50 /* SNDRV_PCM_FORMAT_DSD_U32_LE */ + +#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 */ |