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// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2021, Linaro Limited
#include <linux/err.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
#include "q6dsp-lpass-ports.h"
#include "audioreach.h"
#include "q6apm.h"
#define AUDIOREACH_BE_PCM_BASE 16
struct q6apm_lpass_dai_data {
struct q6apm_graph *graph[APM_PORT_MAX];
bool is_port_started[APM_PORT_MAX];
struct audioreach_module_config module_config[APM_PORT_MAX];
};
static int q6dma_set_channel_map(struct snd_soc_dai *dai,
unsigned int tx_num, unsigned int *tx_ch_mask,
unsigned int rx_num, unsigned int *rx_ch_mask)
{
struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
int ch_mask;
switch (dai->id) {
case WSA_CODEC_DMA_TX_0:
case WSA_CODEC_DMA_TX_1:
case WSA_CODEC_DMA_TX_2:
case VA_CODEC_DMA_TX_0:
case VA_CODEC_DMA_TX_1:
case VA_CODEC_DMA_TX_2:
case TX_CODEC_DMA_TX_0:
case TX_CODEC_DMA_TX_1:
case TX_CODEC_DMA_TX_2:
case TX_CODEC_DMA_TX_3:
case TX_CODEC_DMA_TX_4:
case TX_CODEC_DMA_TX_5:
if (!tx_ch_mask) {
dev_err(dai->dev, "tx slot not found\n");
return -EINVAL;
}
if (tx_num > AR_PCM_MAX_NUM_CHANNEL) {
dev_err(dai->dev, "invalid tx num %d\n",
tx_num);
return -EINVAL;
}
ch_mask = *tx_ch_mask;
break;
case WSA_CODEC_DMA_RX_0:
case WSA_CODEC_DMA_RX_1:
case RX_CODEC_DMA_RX_0:
case RX_CODEC_DMA_RX_1:
case RX_CODEC_DMA_RX_2:
case RX_CODEC_DMA_RX_3:
case RX_CODEC_DMA_RX_4:
case RX_CODEC_DMA_RX_5:
case RX_CODEC_DMA_RX_6:
case RX_CODEC_DMA_RX_7:
/* rx */
if (!rx_ch_mask) {
dev_err(dai->dev, "rx slot not found\n");
return -EINVAL;
}
if (rx_num > APM_PORT_MAX_AUDIO_CHAN_CNT) {
dev_err(dai->dev, "invalid rx num %d\n",
rx_num);
return -EINVAL;
}
ch_mask = *rx_ch_mask;
break;
default:
dev_err(dai->dev, "%s: invalid dai id 0x%x\n",
__func__, dai->id);
return -EINVAL;
}
cfg->active_channels_mask = ch_mask;
return 0;
}
static int q6dma_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
cfg->bit_width = params_width(params);
cfg->sample_rate = params_rate(params);
cfg->num_channels = params_channels(params);
return 0;
}
static void q6apm_lpass_dai_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
{
struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
int rc;
if (!dai_data->is_port_started[dai->id])
return;
rc = q6apm_graph_stop(dai_data->graph[dai->id]);
if (rc < 0)
dev_err(dai->dev, "fail to close APM port (%d)\n", rc);
q6apm_graph_close(dai_data->graph[dai->id]);
dai_data->is_port_started[dai->id] = false;
}
static int q6apm_lpass_dai_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
{
struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
struct q6apm_graph *graph;
int graph_id = dai->id;
int rc;
/**
* It is recommend to load DSP with source graph first and then sink
* graph, so sequence for playback and capture will be different
*/
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
graph = q6apm_graph_open(dai->dev, NULL, dai->dev, graph_id);
if (IS_ERR(graph)) {
dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id);
rc = PTR_ERR(graph);
return rc;
}
dai_data->graph[graph_id] = graph;
}
cfg->direction = substream->stream;
rc = q6apm_graph_media_format_pcm(dai_data->graph[dai->id], cfg);
if (rc) {
dev_err(dai->dev, "Failed to set media format %d\n", rc);
return rc;
}
rc = q6apm_graph_prepare(dai_data->graph[dai->id]);
if (rc) {
dev_err(dai->dev, "Failed to prepare Graph %d\n", rc);
return rc;
}
rc = q6apm_graph_start(dai_data->graph[dai->id]);
if (rc < 0) {
dev_err(dai->dev, "fail to start APM port %x\n", dai->id);
return rc;
}
dai_data->is_port_started[dai->id] = true;
return 0;
}
static int q6apm_lpass_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
{
struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
struct q6apm_graph *graph;
int graph_id = dai->id;
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
graph = q6apm_graph_open(dai->dev, NULL, dai->dev, graph_id);
if (IS_ERR(graph)) {
dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id);
return PTR_ERR(graph);
}
dai_data->graph[graph_id] = graph;
}
return 0;
}
static int q6i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
cfg->fmt = fmt;
return 0;
}
static const struct snd_soc_dai_ops q6dma_ops = {
.prepare = q6apm_lpass_dai_prepare,
.startup = q6apm_lpass_dai_startup,
.shutdown = q6apm_lpass_dai_shutdown,
.set_channel_map = q6dma_set_channel_map,
.hw_params = q6dma_hw_params,
};
static const struct snd_soc_dai_ops q6i2s_ops = {
.prepare = q6apm_lpass_dai_prepare,
.startup = q6apm_lpass_dai_startup,
.shutdown = q6apm_lpass_dai_shutdown,
.set_channel_map = q6dma_set_channel_map,
.hw_params = q6dma_hw_params,
.set_fmt = q6i2s_set_fmt,
};
static const struct snd_soc_component_driver q6apm_lpass_dai_component = {
.name = "q6apm-be-dai-component",
.of_xlate_dai_name = q6dsp_audio_ports_of_xlate_dai_name,
.be_pcm_base = AUDIOREACH_BE_PCM_BASE,
.use_dai_pcm_id = true,
};
static int q6apm_lpass_dai_dev_probe(struct platform_device *pdev)
{
struct q6dsp_audio_port_dai_driver_config cfg;
struct q6apm_lpass_dai_data *dai_data;
struct snd_soc_dai_driver *dais;
struct device *dev = &pdev->dev;
int num_dais;
dai_data = devm_kzalloc(dev, sizeof(*dai_data), GFP_KERNEL);
if (!dai_data)
return -ENOMEM;
dev_set_drvdata(dev, dai_data);
memset(&cfg, 0, sizeof(cfg));
cfg.q6i2s_ops = &q6i2s_ops;
cfg.q6dma_ops = &q6dma_ops;
dais = q6dsp_audio_ports_set_config(dev, &cfg, &num_dais);
return devm_snd_soc_register_component(dev, &q6apm_lpass_dai_component, dais, num_dais);
}
#ifdef CONFIG_OF
static const struct of_device_id q6apm_lpass_dai_device_id[] = {
{ .compatible = "qcom,q6apm-lpass-dais" },
{},
};
MODULE_DEVICE_TABLE(of, q6apm_lpass_dai_device_id);
#endif
static struct platform_driver q6apm_lpass_dai_platform_driver = {
.driver = {
.name = "q6apm-lpass-dais",
.of_match_table = of_match_ptr(q6apm_lpass_dai_device_id),
},
.probe = q6apm_lpass_dai_dev_probe,
};
module_platform_driver(q6apm_lpass_dai_platform_driver);
MODULE_DESCRIPTION("AUDIOREACH APM LPASS dai driver");
MODULE_LICENSE("GPL");
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