diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/soc/mediatek/common/mtk-afe-platform-driver.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/sound/soc/mediatek/common/mtk-afe-platform-driver.c b/sound/soc/mediatek/common/mtk-afe-platform-driver.c new file mode 100644 index 000000000..01501d574 --- /dev/null +++ b/sound/soc/mediatek/common/mtk-afe-platform-driver.c @@ -0,0 +1,139 @@ +// 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); + +snd_pcm_uframes_t mtk_afe_pcm_pointer(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component); + struct mtk_base_afe_memif *memif = &afe->memif[asoc_rtd_to_cpu(rtd, 0)->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); +} +EXPORT_SYMBOL_GPL(mtk_afe_pcm_pointer); + +int mtk_afe_pcm_new(struct snd_soc_component *component, + struct snd_soc_pcm_runtime *rtd) +{ + size_t size; + struct snd_pcm *pcm = rtd->pcm; + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component); + + size = afe->mtk_afe_hardware->buffer_bytes_max; + snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, + afe->dev, size, size); + return 0; +} +EXPORT_SYMBOL_GPL(mtk_afe_pcm_new); + +const struct snd_soc_component_driver mtk_afe_pcm_platform = { + .name = AFE_PCM_NAME, + .pointer = mtk_afe_pcm_pointer, + .pcm_construct = mtk_afe_pcm_new, +}; +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"); + |