153 lines
4.2 KiB
C
153 lines
4.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* mtk-afe-platform-driver.c -- Mediatek afe platform driver
|
|
*
|
|
* Copyright (c) 2016 MediaTek Inc.
|
|
* Author: Garlic Tseng <garlic.tseng@mediatek.com>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <sound/soc.h>
|
|
|
|
#include "mtk-afe-platform-driver.h"
|
|
#include "mtk-base-afe.h"
|
|
|
|
int mtk_afe_combine_sub_dai(struct mtk_base_afe *afe)
|
|
{
|
|
struct mtk_base_afe_dai *dai;
|
|
size_t num_dai_drivers = 0, dai_idx = 0;
|
|
|
|
/* calcualte total dai driver size */
|
|
list_for_each_entry(dai, &afe->sub_dais, list) {
|
|
num_dai_drivers += dai->num_dai_drivers;
|
|
}
|
|
|
|
dev_info(afe->dev, "%s(), num of dai %zd\n", __func__, num_dai_drivers);
|
|
|
|
/* combine sub_dais */
|
|
afe->num_dai_drivers = num_dai_drivers;
|
|
afe->dai_drivers = devm_kcalloc(afe->dev,
|
|
num_dai_drivers,
|
|
sizeof(struct snd_soc_dai_driver),
|
|
GFP_KERNEL);
|
|
if (!afe->dai_drivers)
|
|
return -ENOMEM;
|
|
|
|
list_for_each_entry(dai, &afe->sub_dais, list) {
|
|
/* dai driver */
|
|
memcpy(&afe->dai_drivers[dai_idx],
|
|
dai->dai_drivers,
|
|
dai->num_dai_drivers *
|
|
sizeof(struct snd_soc_dai_driver));
|
|
dai_idx += dai->num_dai_drivers;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(mtk_afe_combine_sub_dai);
|
|
|
|
int mtk_afe_add_sub_dai_control(struct snd_soc_component *component)
|
|
{
|
|
struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
|
|
struct mtk_base_afe_dai *dai;
|
|
|
|
list_for_each_entry(dai, &afe->sub_dais, list) {
|
|
if (dai->controls)
|
|
snd_soc_add_component_controls(component,
|
|
dai->controls,
|
|
dai->num_controls);
|
|
|
|
if (dai->dapm_widgets)
|
|
snd_soc_dapm_new_controls(&component->dapm,
|
|
dai->dapm_widgets,
|
|
dai->num_dapm_widgets);
|
|
}
|
|
/* add routes after all widgets are added */
|
|
list_for_each_entry(dai, &afe->sub_dais, list) {
|
|
if (dai->dapm_routes)
|
|
snd_soc_dapm_add_routes(&component->dapm,
|
|
dai->dapm_routes,
|
|
dai->num_dapm_routes);
|
|
}
|
|
|
|
snd_soc_dapm_new_widgets(component->dapm.card);
|
|
|
|
return 0;
|
|
|
|
}
|
|
EXPORT_SYMBOL_GPL(mtk_afe_add_sub_dai_control);
|
|
|
|
static snd_pcm_uframes_t mtk_afe_pcm_pointer
|
|
(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
|
struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
|
|
struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
|
|
struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
|
|
const struct mtk_base_memif_data *memif_data = memif->data;
|
|
struct regmap *regmap = afe->regmap;
|
|
struct device *dev = afe->dev;
|
|
int reg_ofs_base = memif_data->reg_ofs_base;
|
|
int reg_ofs_cur = memif_data->reg_ofs_cur;
|
|
unsigned int hw_ptr = 0, hw_base = 0;
|
|
int ret, pcm_ptr_bytes;
|
|
|
|
ret = regmap_read(regmap, reg_ofs_cur, &hw_ptr);
|
|
if (ret || hw_ptr == 0) {
|
|
dev_err(dev, "%s hw_ptr err\n", __func__);
|
|
pcm_ptr_bytes = 0;
|
|
goto POINTER_RETURN_FRAMES;
|
|
}
|
|
|
|
ret = regmap_read(regmap, reg_ofs_base, &hw_base);
|
|
if (ret || hw_base == 0) {
|
|
dev_err(dev, "%s hw_ptr err\n", __func__);
|
|
pcm_ptr_bytes = 0;
|
|
goto POINTER_RETURN_FRAMES;
|
|
}
|
|
|
|
pcm_ptr_bytes = hw_ptr - hw_base;
|
|
|
|
POINTER_RETURN_FRAMES:
|
|
return bytes_to_frames(substream->runtime, pcm_ptr_bytes);
|
|
}
|
|
|
|
const struct snd_pcm_ops mtk_afe_pcm_ops = {
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.pointer = mtk_afe_pcm_pointer,
|
|
};
|
|
EXPORT_SYMBOL_GPL(mtk_afe_pcm_ops);
|
|
|
|
int mtk_afe_pcm_new(struct snd_soc_pcm_runtime *rtd)
|
|
{
|
|
size_t size;
|
|
struct snd_pcm *pcm = rtd->pcm;
|
|
struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
|
|
struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
|
|
|
|
size = afe->mtk_afe_hardware->buffer_bytes_max;
|
|
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
|
|
afe->dev, size, size);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(mtk_afe_pcm_new);
|
|
|
|
void mtk_afe_pcm_free(struct snd_pcm *pcm)
|
|
{
|
|
snd_pcm_lib_preallocate_free_for_all(pcm);
|
|
}
|
|
EXPORT_SYMBOL_GPL(mtk_afe_pcm_free);
|
|
|
|
const struct snd_soc_component_driver mtk_afe_pcm_platform = {
|
|
.name = AFE_PCM_NAME,
|
|
.ops = &mtk_afe_pcm_ops,
|
|
.pcm_new = mtk_afe_pcm_new,
|
|
.pcm_free = mtk_afe_pcm_free,
|
|
};
|
|
EXPORT_SYMBOL_GPL(mtk_afe_pcm_platform);
|
|
|
|
MODULE_DESCRIPTION("Mediatek simple platform driver");
|
|
MODULE_AUTHOR("Garlic Tseng <garlic.tseng@mediatek.com>");
|
|
MODULE_LICENSE("GPL v2");
|
|
|