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// SPDX-License-Identifier: GPL-2.0+
// Copyright 2020 NXP
#include <linux/module.h>
#include <linux/rpmsg.h>
#include <linux/imx_rpmsg.h>
#include "fsl_rpmsg_i2s.h"
extern struct i2s_info *i2s_info_g;
static int i2s_rpmsg_cb(struct rpmsg_device *rpdev, void *data, int len,
void *priv, u32 src)
{
struct i2s_rpmsg_r *msg = (struct i2s_rpmsg_r *)data;
struct i2s_rpmsg *rpmsg;
unsigned long flags;
dev_dbg(&rpdev->dev, "get from%d: cmd:%d. %d\n",
src, msg->header.cmd, msg->param.resp);
if (msg->header.type == I2S_TYPE_C) {
if (msg->header.cmd == I2S_TX_PERIOD_DONE) {
spin_lock_irqsave(&i2s_info_g->lock[0], flags);
rpmsg = &i2s_info_g->rpmsg[I2S_TX_PERIOD_DONE + I2S_TYPE_A_NUM];
if (msg->header.major == 1 && msg->header.minor == 2)
rpmsg->recv_msg.param.buffer_tail =
msg->param.buffer_tail;
else
rpmsg->recv_msg.param.buffer_tail++;
rpmsg->recv_msg.param.buffer_tail %=
i2s_info_g->num_period[0];
spin_unlock_irqrestore(&i2s_info_g->lock[0], flags);
i2s_info_g->callback[0](i2s_info_g->callback_param[0]);
} else if (msg->header.cmd == I2S_RX_PERIOD_DONE) {
spin_lock_irqsave(&i2s_info_g->lock[1], flags);
rpmsg = &i2s_info_g->rpmsg[I2S_RX_PERIOD_DONE + I2S_TYPE_A_NUM];
if (msg->header.major == 1 && msg->header.minor == 2)
rpmsg->recv_msg.param.buffer_tail =
msg->param.buffer_tail;
else
rpmsg->recv_msg.param.buffer_tail++;
rpmsg->recv_msg.param.buffer_tail %=
i2s_info_g->num_period[1];
spin_unlock_irqrestore(&i2s_info_g->lock[1], flags);
i2s_info_g->callback[1](i2s_info_g->callback_param[1]);
}
}
if (msg->header.type == I2S_TYPE_B) {
memcpy(&i2s_info_g->recv_msg, msg, sizeof(struct i2s_rpmsg_r));
complete(&i2s_info_g->cmd_complete);
}
return 0;
}
static int i2s_rpmsg_probe(struct rpmsg_device *rpdev)
{
struct platform_device *codec_pdev;
struct fsl_rpmsg_i2s *rpmsg_i2s = NULL;
struct fsl_rpmsg_codec rpmsg_codec[3];
int ret;
if (!i2s_info_g)
return 0;
i2s_info_g->rpdev = rpdev;
init_completion(&i2s_info_g->cmd_complete);
dev_info(&rpdev->dev, "new channel: 0x%x -> 0x%x!\n",
rpdev->src, rpdev->dst);
rpmsg_i2s = container_of(i2s_info_g, struct fsl_rpmsg_i2s, i2s_info);
if (rpmsg_i2s->codec_in_dt)
return 0;
if (rpmsg_i2s->codec_wm8960) {
rpmsg_codec[0].audioindex = rpmsg_i2s->codec_wm8960 >> 16;
rpmsg_codec[0].shared_lrclk = true;
rpmsg_codec[0].capless = false;
codec_pdev = platform_device_register_data(
&rpmsg_i2s->pdev->dev,
RPMSG_CODEC_DRV_NAME_WM8960,
PLATFORM_DEVID_NONE,
&rpmsg_codec[0], sizeof(struct fsl_rpmsg_codec));
if (IS_ERR(codec_pdev)) {
dev_err(&rpdev->dev,
"failed to register rpmsg audio codec\n");
ret = PTR_ERR(codec_pdev);
return ret;
}
}
if (rpmsg_i2s->codec_cs42888) {
rpmsg_codec[1].audioindex = rpmsg_i2s->codec_cs42888 >> 16;
strcpy(rpmsg_codec[1].name, "cs42888");
rpmsg_codec[1].num_adcs = 2;
codec_pdev = platform_device_register_data(
&rpmsg_i2s->pdev->dev,
RPMSG_CODEC_DRV_NAME_CS42888,
PLATFORM_DEVID_NONE,
&rpmsg_codec[1], sizeof(struct fsl_rpmsg_codec));
if (IS_ERR(codec_pdev)) {
dev_err(&rpdev->dev,
"failed to register rpmsg audio codec\n");
ret = PTR_ERR(codec_pdev);
return ret;
}
}
if (rpmsg_i2s->codec_ak4497) {
rpmsg_codec[2].audioindex = rpmsg_i2s->codec_ak4497 >> 16;
codec_pdev = platform_device_register_data(
&rpmsg_i2s->pdev->dev,
RPMSG_CODEC_DRV_NAME_AK4497,
PLATFORM_DEVID_NONE,
&rpmsg_codec[2], sizeof(struct fsl_rpmsg_codec));
if (IS_ERR(codec_pdev)) {
dev_err(&rpdev->dev,
"failed to register rpmsg audio codec\n");
ret = PTR_ERR(codec_pdev);
return ret;
}
}
return 0;
}
static void i2s_rpmsg_remove(struct rpmsg_device *rpdev)
{
dev_info(&rpdev->dev, "i2s rpmsg driver is removed\n");
}
static struct rpmsg_device_id i2s_rpmsg_id_table[] = {
{ .name = "rpmsg-audio-channel" },
{ },
};
static struct rpmsg_driver i2s_rpmsg_driver = {
.drv.name = "i2s_rpmsg",
.drv.owner = THIS_MODULE,
.id_table = i2s_rpmsg_id_table,
.probe = i2s_rpmsg_probe,
.callback = i2s_rpmsg_cb,
.remove = i2s_rpmsg_remove,
};
static int __init i2s_rpmsg_init(void)
{
return register_rpmsg_driver(&i2s_rpmsg_driver);
}
static void __exit i2s_rpmsg_exit(void)
{
unregister_rpmsg_driver(&i2s_rpmsg_driver);
}
module_init(i2s_rpmsg_init);
module_exit(i2s_rpmsg_exit);
MODULE_LICENSE("GPL v2");
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