@@ -88,9 +88,13 @@ config SND_SOC_QDSP6_APM_DAI
tristate
select SND_SOC_COMPRESS
+config SND_SOC_QDSP6_APM_LPASS_DAI
+ tristate
+
config SND_SOC_QDSP6_APM
tristate
select SND_SOC_QDSP6_APM_DAI
+ select SND_SOC_QDSP6_APM_LPASS_DAI
config SND_SOC_QDSP6
tristate "SoC ALSA audio driver for QDSP6"
@@ -14,3 +14,4 @@ obj-$(CONFIG_SND_SOC_QDSP6_ASM_DAI) += q6asm-dai.o
obj-$(CONFIG_SND_SOC_QDSP6_APM) += snd-q6apm.o
obj-$(CONFIG_SND_SOC_QDSP6_APM_DAI) += q6apm-dai.o
+obj-$(CONFIG_SND_SOC_QDSP6_APM_LPASS_DAI) += q6apm-lpass-dais.o
new file mode 100644
@@ -0,0 +1,260 @@
+// 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");