From 35cc92b8996980021f881a202b8e1233ca41eb0d Mon Sep 17 00:00:00 2001
From: Sam Shih <sam.shih@mediatek.com>
Date: Fri, 2 Jun 2023 13:06:08 +0800
Subject: [PATCH] 
 [slow-speed-io][999-2151-sound-refine-hw-params-and-hw-prepare.patch]

---
 sound/soc/mediatek/common/mtk-afe-fe-dai.c | 143 +++++++++++----------
 1 file changed, 77 insertions(+), 66 deletions(-)

diff --git a/sound/soc/mediatek/common/mtk-afe-fe-dai.c b/sound/soc/mediatek/common/mtk-afe-fe-dai.c
index 309dc1ef6..e761cb66b 100644
--- a/sound/soc/mediatek/common/mtk-afe-fe-dai.c
+++ b/sound/soc/mediatek/common/mtk-afe-fe-dai.c
@@ -6,11 +6,13 @@
  * Author: Garlic Tseng <garlic.tseng@mediatek.com>
  */
 
+#include <linux/io.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <sound/soc.h>
 #include "mtk-afe-platform-driver.h"
+#include <sound/pcm_params.h>
 #include "mtk-afe-fe-dai.h"
 #include "mtk-base-afe.h"
 
@@ -120,50 +122,64 @@ int mtk_afe_fe_hw_params(struct snd_pcm_substream *substream,
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
-	struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
-	int msb_at_bit33 = 0;
-	int ret, fs = 0;
+	int id = rtd->cpu_dai->id;
+	struct mtk_base_afe_memif *memif = &afe->memif[id];
+	int ret;
+	unsigned int channels = params_channels(params);
+	unsigned int rate = params_rate(params);
+	snd_pcm_format_t format = params_format(params);
 
 	ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
 	if (ret < 0)
 		return ret;
 
-	msb_at_bit33 = upper_32_bits(substream->runtime->dma_addr) ? 1 : 0;
-	memif->phys_buf_addr = lower_32_bits(substream->runtime->dma_addr);
-	memif->buffer_size = substream->runtime->dma_bytes;
-
-	/* start */
-	mtk_regmap_write(afe->regmap, memif->data->reg_ofs_base,
-			 memif->phys_buf_addr);
-	/* end */
-	mtk_regmap_write(afe->regmap,
-			 memif->data->reg_ofs_base + AFE_BASE_END_OFFSET,
-			 memif->phys_buf_addr + memif->buffer_size - 1);
-
-	/* set MSB to 33-bit */
-	mtk_regmap_update_bits(afe->regmap, memif->data->msb_reg,
-			       1, msb_at_bit33, memif->data->msb_shift);
+	if (afe->request_dram_resource)
+		afe->request_dram_resource(afe->dev);
+
+	dev_dbg(afe->dev, "%s(), %s, ch %d, rate %d, fmt %d, dma_addr %pad, dma_area %p, dma_bytes 0x%zx\n",
+		__func__, memif->data->name,
+		channels, rate, format,
+		&substream->runtime->dma_addr,
+		substream->runtime->dma_area,
+		substream->runtime->dma_bytes);
+
+	memset_io(substream->runtime->dma_area, 0,
+		  substream->runtime->dma_bytes);
+
+	/* set addr */
+	ret = mtk_memif_set_addr(afe, id,
+				 substream->runtime->dma_area,
+				 substream->runtime->dma_addr,
+				 substream->runtime->dma_bytes);
+	if (ret) {
+		dev_err(afe->dev, "%s(), error, id %d, set addr, ret %d\n",
+			__func__, id, ret);
+		return ret;
+	}
 
 	/* set channel */
-	if (memif->data->mono_shift >= 0) {
-		unsigned int mono = (params_channels(params) == 1) ? 1 : 0;
-
-		mtk_regmap_update_bits(afe->regmap, memif->data->mono_reg,
-				       1, mono, memif->data->mono_shift);
+	ret = mtk_memif_set_channel(afe, id, channels);
+	if (ret) {
+		dev_err(afe->dev, "%s(), error, id %d, set channel %d, ret %d\n",
+			__func__, id, channels, ret);
+		return ret;
 	}
 
 	/* set rate */
-	if (memif->data->fs_shift < 0)
-		return 0;
-
-	fs = afe->memif_fs(substream, params_rate(params));
-
-	if (fs < 0)
-		return -EINVAL;
+	ret = mtk_memif_set_rate_substream(substream, id, rate);
+	if (ret) {
+		dev_err(afe->dev, "%s(), error, id %d, set rate %d, ret %d\n",
+			__func__, id, rate, ret);
+		return ret;
+	}
 
-	mtk_regmap_update_bits(afe->regmap, memif->data->fs_reg,
-			       memif->data->fs_maskbit, fs,
-			       memif->data->fs_shift);
+	/* set format */
+	ret = mtk_memif_set_format(afe, id, format);
+	if (ret) {
+		dev_err(afe->dev, "%s(), error, id %d, set format %d, ret %d\n",
+			__func__, id, format, ret);
+		return ret;
+	}
 
 	return 0;
 }
@@ -172,6 +188,11 @@ EXPORT_SYMBOL_GPL(mtk_afe_fe_hw_params);
 int mtk_afe_fe_hw_free(struct snd_pcm_substream *substream,
 		       struct snd_soc_dai *dai)
 {
+	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
+
+	if (afe->release_dram_resource)
+		afe->release_dram_resource(afe->dev);
+
 	return snd_pcm_lib_free_pages(substream);
 }
 EXPORT_SYMBOL_GPL(mtk_afe_fe_hw_free);
@@ -182,20 +203,25 @@ int mtk_afe_fe_trigger(struct snd_pcm_substream *substream, int cmd,
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_pcm_runtime * const runtime = substream->runtime;
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
-	struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
+	int id = rtd->cpu_dai->id;
+	struct mtk_base_afe_memif *memif = &afe->memif[id];
 	struct mtk_base_afe_irq *irqs = &afe->irqs[memif->irq_usage];
 	const struct mtk_base_irq_data *irq_data = irqs->irq_data;
 	unsigned int counter = runtime->period_size;
 	int fs;
+	int ret;
 
 	dev_dbg(afe->dev, "%s %s cmd=%d\n", __func__, memif->data->name, cmd);
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
 	case SNDRV_PCM_TRIGGER_RESUME:
-		mtk_regmap_update_bits(afe->regmap,
-				       memif->data->enable_reg,
-				       1, 1, memif->data->enable_shift);
+		ret = mtk_memif_set_enable(afe, id);
+		if (ret) {
+			dev_err(afe->dev, "%s(), error, id %d, memif enable, ret %d\n",
+				__func__, id, ret);
+			return ret;
+		}
 
 		/* set irq counter */
 		mtk_regmap_update_bits(afe->regmap, irq_data->irq_cnt_reg,
@@ -219,15 +245,19 @@ int mtk_afe_fe_trigger(struct snd_pcm_substream *substream, int cmd,
 		return 0;
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_SUSPEND:
-		mtk_regmap_update_bits(afe->regmap, memif->data->enable_reg,
-				       1, 0, memif->data->enable_shift);
+		ret = mtk_memif_set_disable(afe, id);
+		if (ret) {
+			dev_err(afe->dev, "%s(), error, id %d, memif enable, ret %d\n",
+				__func__, id, ret);
+		}
+
 		/* disable interrupt */
 		mtk_regmap_update_bits(afe->regmap, irq_data->irq_en_reg,
 				       1, 0, irq_data->irq_en_shift);
 		/* and clear pending IRQ */
 		mtk_regmap_write(afe->regmap, irq_data->irq_clr_reg,
 				 1 << irq_data->irq_clr_shift);
-		return 0;
+		return ret;
 	default:
 		return -EINVAL;
 	}
@@ -239,34 +269,15 @@ int mtk_afe_fe_prepare(struct snd_pcm_substream *substream,
 {
 	struct snd_soc_pcm_runtime *rtd  = substream->private_data;
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
-	struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
-	int hd_audio = 0;
-	int hd_align = 0;
+	int id = rtd->cpu_dai->id;
+	int pbuf_size;
 
-	/* set hd mode */
-	switch (substream->runtime->format) {
-	case SNDRV_PCM_FORMAT_S16_LE:
-		hd_audio = 0;
-		break;
-	case SNDRV_PCM_FORMAT_S32_LE:
-		hd_audio = 1;
-		hd_align = 1;
-		break;
-	case SNDRV_PCM_FORMAT_S24_LE:
-		hd_audio = 1;
-		break;
-	default:
-		dev_err(afe->dev, "%s() error: unsupported format %d\n",
-			__func__, substream->runtime->format);
-		break;
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		if (afe->get_memif_pbuf_size) {
+			pbuf_size = afe->get_memif_pbuf_size(substream);
+			mtk_memif_set_pbuf_size(afe, id, pbuf_size);
+		}
 	}
-
-	mtk_regmap_update_bits(afe->regmap, memif->data->hd_reg,
-			       1, hd_audio, memif->data->hd_shift);
-
-	mtk_regmap_update_bits(afe->regmap, memif->data->hd_align_reg,
-			       1, hd_align, memif->data->hd_align_mshift);
-
 	return 0;
 }
 EXPORT_SYMBOL_GPL(mtk_afe_fe_prepare);
-- 
2.34.1