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/*
* mt2701-wm8960.c -- MT2701 WM8960 ALSA SoC machine driver
*
* Copyright (c) 2017 MediaTek Inc.
* Author: Ryder Lee <ryder.lee@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/module.h>
#include <sound/soc.h>
#include "mt2701-afe-common.h"
static const struct snd_soc_dapm_widget mt2701_wm8960_widgets[] = {
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_MIC("AMIC", NULL),
};
static const struct snd_kcontrol_new mt2701_wm8960_controls[] = {
SOC_DAPM_PIN_SWITCH("Headphone"),
SOC_DAPM_PIN_SWITCH("AMIC"),
};
static int mt2701_wm8960_be_ops_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
unsigned int mclk_rate;
unsigned int rate = params_rate(params);
unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4;
unsigned int div_bck_over_lrck = 64;
mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck;
snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT);
snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN);
return 0;
}
static struct snd_soc_ops mt2701_wm8960_be_ops = {
.hw_params = mt2701_wm8960_be_ops_hw_params
};
static struct snd_soc_dai_link mt2701_wm8960_dai_links[] = {
/* FE */
{
.name = "wm8960-playback",
.stream_name = "wm8960-playback",
.cpu_dai_name = "PCMO0",
.codec_name = "snd-soc-dummy",
.codec_dai_name = "snd-soc-dummy-dai",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.dynamic = 1,
.dpcm_playback = 1,
},
{
.name = "wm8960-capture",
.stream_name = "wm8960-capture",
.cpu_dai_name = "PCM0",
.codec_name = "snd-soc-dummy",
.codec_dai_name = "snd-soc-dummy-dai",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.dynamic = 1,
.dpcm_capture = 1,
},
/* BE */
{
.name = "wm8960-codec",
.cpu_dai_name = "I2S0",
.no_pcm = 1,
.codec_dai_name = "wm8960-hifi",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
| SND_SOC_DAIFMT_GATED,
.ops = &mt2701_wm8960_be_ops,
.dpcm_playback = 1,
.dpcm_capture = 1,
},
};
static struct snd_soc_card mt2701_wm8960_card = {
.name = "mt2701-wm8960",
.owner = THIS_MODULE,
.dai_link = mt2701_wm8960_dai_links,
.num_links = ARRAY_SIZE(mt2701_wm8960_dai_links),
.controls = mt2701_wm8960_controls,
.num_controls = ARRAY_SIZE(mt2701_wm8960_controls),
.dapm_widgets = mt2701_wm8960_widgets,
.num_dapm_widgets = ARRAY_SIZE(mt2701_wm8960_widgets),
};
static int mt2701_wm8960_machine_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &mt2701_wm8960_card;
struct device_node *platform_node, *codec_node;
int ret, i;
platform_node = of_parse_phandle(pdev->dev.of_node,
"mediatek,platform", 0);
if (!platform_node) {
dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
return -EINVAL;
}
for (i = 0; i < card->num_links; i++) {
if (mt2701_wm8960_dai_links[i].platform_name)
continue;
mt2701_wm8960_dai_links[i].platform_of_node = platform_node;
}
card->dev = &pdev->dev;
codec_node = of_parse_phandle(pdev->dev.of_node,
"mediatek,audio-codec", 0);
if (!codec_node) {
dev_err(&pdev->dev,
"Property 'audio-codec' missing or invalid\n");
return -EINVAL;
}
for (i = 0; i < card->num_links; i++) {
if (mt2701_wm8960_dai_links[i].codec_name)
continue;
mt2701_wm8960_dai_links[i].codec_of_node = codec_node;
}
ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
if (ret) {
dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
return ret;
}
ret = devm_snd_soc_register_card(&pdev->dev, card);
if (ret)
dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
__func__, ret);
return ret;
}
#ifdef CONFIG_OF
static const struct of_device_id mt2701_wm8960_machine_dt_match[] = {
{.compatible = "mediatek,mt2701-wm8960-machine",},
{}
};
#endif
static struct platform_driver mt2701_wm8960_machine = {
.driver = {
.name = "mt2701-wm8960",
.owner = THIS_MODULE,
#ifdef CONFIG_OF
.of_match_table = mt2701_wm8960_machine_dt_match,
#endif
},
.probe = mt2701_wm8960_machine_probe,
};
module_platform_driver(mt2701_wm8960_machine);
/* Module information */
MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver");
MODULE_AUTHOR("Ryder Lee <ryder.lee@mediatek.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("mt2701 wm8960 soc card");
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