/*
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* sound\soc\sunxi\sunxi_snddaudio.c
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* (C) Copyright 2014-2016
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* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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* Wolfgang Huang <huangjinhui@allwinnertech.com>
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*
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* some simple description for this code
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/clk.h>
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#include <linux/mutex.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/pcm_params.h>
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#include <sound/soc-dapm.h>
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#include <linux/io.h>
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#include <linux/of.h>
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#ifdef CONFIG_SND_SUNXI_MAD
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#include "sunxi-mad.h"
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static struct sunxi_mad_priv sunxi_daudio_priv;
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#endif
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static atomic_t daudio_count = ATOMIC_INIT(-1);
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static int sunxi_snddaudio_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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struct snd_soc_card *card = rtd->card;
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unsigned int freq, clk_div;
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int ret;
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switch (params_rate(params)) {
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case 8000:
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case 16000:
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case 32000:
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case 64000:
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case 12000:
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case 24000:
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case 48000:
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case 96000:
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case 192000:
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#ifdef CONFIG_AHUB_FREQ_REQ
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freq = 98304000;
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#else
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freq = 24576000;
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#endif
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break;
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case 11025:
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case 22050:
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case 44100:
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case 88200:
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case 176400:
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#ifdef CONFIG_AHUB_FREQ_REQ
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freq = 90316800;
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#else
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freq = 22579200;
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#endif
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break;
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default:
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dev_err(card->dev, "unsupport params rate\n");
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return -EINVAL;
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}
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/* set platform clk source freq and set the mode as daudio or pcm */
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ret = snd_soc_dai_set_sysclk(cpu_dai, 0, freq, 0);
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if (ret < 0)
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return ret;
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/* set codec clk source freq and set the mode as daudio or pcm */
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ret = snd_soc_dai_set_sysclk(codec_dai, 0, freq, 0);
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if (ret < 0)
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dev_warn(card->dev, "codec_dai set sysclk failed\n");
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/* set codec dai fmt */
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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dev_warn(card->dev, "codec dai set fmt failed\n");
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/* set system clk div */
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clk_div = freq / params_rate(params);
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ret = snd_soc_dai_set_clkdiv(cpu_dai, 0, clk_div);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_clkdiv(codec_dai, 0, clk_div);
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if (ret < 0)
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dev_warn(card->dev, "codec_dai set clkdiv failed\n");
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return 0;
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}
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/* sunxi card initialization */
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static int sunxi_snddaudio_init(struct snd_soc_pcm_runtime *rtd)
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{
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return 0;
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}
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#ifdef CONFIG_SND_SUNXI_MAD
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/*enable the snddaudio suspend */
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static int sunxi_snddaudio_startup(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
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if (sunxi_daudio_priv.mad_bind == 1)
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rtd->dai_link->ignore_suspend = 1;
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}
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return 0;
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}
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/*disable the snddaudio suspend */
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static void sunxi_snddaudio_shutdown(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
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if (sunxi_daudio_priv.mad_bind == 1)
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rtd->dai_link->ignore_suspend = 0;
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}
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}
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/*mad_bind config*/
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static int sunxi_daudio_set_mad_bind(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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sunxi_daudio_priv.mad_bind = ucontrol->value.integer.value[0];
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return 0;
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}
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static int sunxi_daudio_get_mad_bind(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.integer.value[0] = sunxi_daudio_priv.mad_bind;
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return 0;
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}
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static const char *mad_bind_function[] = {"mad_unbind", "mad_bind"};
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static const struct soc_enum mad_bind_enum[] = {
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SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(mad_bind_function),
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mad_bind_function),
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};
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/* daudio machine kcontrols */
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static const struct snd_kcontrol_new sunxi_snddaudio_controls[] = {
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SOC_ENUM_EXT("daudio bind mad Function", mad_bind_enum[0],
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sunxi_daudio_get_mad_bind, sunxi_daudio_set_mad_bind),
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};
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#endif
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static struct snd_soc_ops sunxi_snddaudio_ops = {
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.hw_params = sunxi_snddaudio_hw_params,
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#ifdef CONFIG_SND_SUNXI_MAD
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.startup = sunxi_snddaudio_startup,
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.shutdown = sunxi_snddaudio_shutdown,
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#endif
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};
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static struct snd_soc_dai_link sunxi_snddaudio_dai_link = {
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.name = "sysvoice",
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.stream_name = "SUNXI-AUDIO",
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.cpu_dai_name = "sunxi-daudio",
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.platform_name = "sunxi-daudio",
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.codec_dai_name = "snd-soc-dummy-dai",
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.codec_name = "snd-soc-dummy",
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.init = sunxi_snddaudio_init,
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.ops = &sunxi_snddaudio_ops,
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};
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static struct snd_soc_card snd_soc_sunxi_snddaudio = {
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.name = "snddaudio",
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.owner = THIS_MODULE,
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.dai_link = &sunxi_snddaudio_dai_link,
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.num_links = 1,
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#ifdef CONFIG_SND_SUNXI_MAD
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.controls = sunxi_snddaudio_controls,
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.num_controls = ARRAY_SIZE(sunxi_snddaudio_controls),
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#endif
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};
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#ifdef CONFIG_SND_SUNXI_SOC_AHUB
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static int sunxi_snddaudio_dev_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct snd_soc_dai_link *dai_link;
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struct snd_soc_card *card;
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char name[30] = "snddaudio";
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unsigned int temp_val;
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int ret = 0;
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card = devm_kzalloc(&pdev->dev, sizeof(struct snd_soc_card),
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GFP_KERNEL);
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if (!card)
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return -ENOMEM;
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memcpy(card, &snd_soc_sunxi_snddaudio, sizeof(struct snd_soc_card));
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card->dev = &pdev->dev;
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dai_link = devm_kzalloc(&pdev->dev,
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sizeof(struct snd_soc_dai_link), GFP_KERNEL);
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if (!dai_link) {
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ret = -ENOMEM;
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goto err_kfree_card;
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}
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memcpy(dai_link, &sunxi_snddaudio_dai_link,
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sizeof(struct snd_soc_dai_link));
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card->dai_link = dai_link;
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dai_link->cpu_dai_name = NULL;
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dai_link->cpu_of_node = of_parse_phandle(np,
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"sunxi,cpudai-controller", 0);
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if (!dai_link->cpu_of_node) {
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dev_err(&pdev->dev,
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"Property 'sunxi,cpudai-controller' invalid\n");
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ret = -EINVAL;
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goto err_kfree_link;
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}
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dai_link->platform_name = "snd-soc-dummy";
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ret = of_property_read_string(np, "sunxi,snddaudio-codec",
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&dai_link->codec_name);
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/*
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* As we setting codec & codec_dai in dtb, we just setting the
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* codec & codec_dai in the dai_link. But if we just not setting,
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* we then using the snd-soc-dummy as the codec & codec_dai to
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* construct the snd-card for audio playback & capture.
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*/
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if (!ret) {
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ret = of_property_read_string(np, "sunxi,snddaudio-codec-dai",
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&dai_link->codec_dai_name);
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if (ret < 0) {
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dev_err(card->dev, "codec_dai name invaild in dtb\n");
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ret = -EINVAL;
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goto err_kfree_link;
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}
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sprintf(name+3, "%s", dai_link->codec_name);
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} else {
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if (dai_link->cpu_of_node && of_property_read_u32(
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dai_link->cpu_of_node, "tdm_num", &temp_val) >= 0)
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sprintf(name+9, "%u", temp_val);
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else
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sprintf(name+9, "%d", atomic_inc_return(&daudio_count));
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}
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card->name = name;
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dev_info(card->dev, "codec: %s, codec_dai: %s.\n",
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dai_link->codec_name,
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dai_link->codec_dai_name);
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ret = snd_soc_register_card(card);
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if (ret) {
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dev_err(card->dev, "snd_soc_register_card failed\n");
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goto err_kfree_link;
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}
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return ret;
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err_kfree_link:
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devm_kfree(&pdev->dev, card->dai_link);
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err_kfree_card:
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devm_kfree(&pdev->dev, card);
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return ret;
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}
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#else
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static int sunxi_snddaudio_dev_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct snd_soc_dai_link *dai_link;
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struct snd_soc_card *card;
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char name[30] = "snddaudio";
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unsigned int temp_val;
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int ret = 0;
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card = devm_kzalloc(&pdev->dev, sizeof(struct snd_soc_card),
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GFP_KERNEL);
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if (!card)
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return -ENOMEM;
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memcpy(card, &snd_soc_sunxi_snddaudio, sizeof(struct snd_soc_card));
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card->dev = &pdev->dev;
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dai_link = devm_kzalloc(&pdev->dev,
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sizeof(struct snd_soc_dai_link), GFP_KERNEL);
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if (!dai_link) {
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ret = -ENOMEM;
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goto err_kfree_card;
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}
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memcpy(dai_link, &sunxi_snddaudio_dai_link,
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sizeof(struct snd_soc_dai_link));
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card->dai_link = dai_link;
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dai_link->cpu_dai_name = NULL;
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dai_link->cpu_of_node = of_parse_phandle(np,
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"sunxi,daudio0-controller", 0);
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if (dai_link->cpu_of_node)
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goto cpu_node_find;
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dai_link->cpu_of_node = of_parse_phandle(np,
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"sunxi,daudio1-controller", 0);
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if (dai_link->cpu_of_node)
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goto cpu_node_find;
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dai_link->cpu_of_node = of_parse_phandle(np,
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"sunxi,daudio-controller", 0);
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if (dai_link->cpu_of_node)
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goto cpu_node_find;
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dev_err(card->dev, "Perperty 'sunxi,daudio-controller' missing\n");
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goto err_kfree_link;
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cpu_node_find:
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dai_link->platform_name = NULL;
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dai_link->platform_of_node =
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dai_link->cpu_of_node;
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ret = of_property_read_string(np, "sunxi,snddaudio-codec",
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&dai_link->codec_name);
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/*
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* As we setting codec & codec_dai in dtb, we just setting the
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* codec & codec_dai in the dai_link. But if we just not setting,
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* we then using the snd-soc-dummy as the codec & codec_dai to
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* construct the snd-card for audio playback & capture.
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*/
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if (!ret) {
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ret = of_property_read_string(np, "sunxi,snddaudio-codec-dai",
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&dai_link->codec_dai_name);
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if (ret < 0) {
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dev_err(card->dev, "codec_dai name invaild in dtb\n");
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ret = -EINVAL;
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goto err_kfree_link;
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}
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sprintf(name+3, "%s", dai_link->codec_name);
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} else {
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if (dai_link->cpu_of_node && of_property_read_u32(
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dai_link->cpu_of_node, "tdm_num", &temp_val) >= 0)
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sprintf(name+9, "%u", temp_val);
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else
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sprintf(name+9, "%d", atomic_inc_return(&daudio_count));
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}
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card->name = name;
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dev_info(card->dev, "codec: %s, codec_dai: %s.\n",
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dai_link->codec_name,
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dai_link->codec_dai_name);
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#ifdef CONFIG_SND_SUNXI_MAD
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sunxi_daudio_priv.mad_bind = 0;
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snd_soc_card_set_drvdata(card, &sunxi_daudio_priv);
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#endif
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ret = snd_soc_register_card(card);
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if (ret) {
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dev_err(card->dev, "snd_soc_register_card failed\n");
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goto err_kfree_link;
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}
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return ret;
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err_kfree_link:
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devm_kfree(&pdev->dev, card->dai_link);
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err_kfree_card:
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devm_kfree(&pdev->dev, card);
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return ret;
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}
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#endif
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static int sunxi_snddaudio_dev_remove(struct platform_device *pdev)
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{
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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devm_kfree(&pdev->dev, card->dai_link);
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snd_soc_unregister_card(card);
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devm_kfree(&pdev->dev, card);
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return 0;
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}
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static const struct of_device_id sunxi_snddaudio_of_match[] = {
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{ .compatible = "allwinner,sunxi-daudio0-machine", },
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{ .compatible = "allwinner,sunxi-daudio1-machine", },
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{ .compatible = "allwinner,sunxi-daudio2-machine", },
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{ .compatible = "allwinner,sunxi-daudio3-machine", },
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{},
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};
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static struct platform_driver sunxi_snddaudio_driver = {
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.driver = {
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.name = "snddaudio",
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.owner = THIS_MODULE,
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.pm = &snd_soc_pm_ops,
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.of_match_table = sunxi_snddaudio_of_match,
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},
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.probe = sunxi_snddaudio_dev_probe,
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.remove = sunxi_snddaudio_dev_remove,
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};
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static int __init sunxi_snddaudio_driver_init(void)
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{
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return platform_driver_register(&sunxi_snddaudio_driver);
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}
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static void __exit sunxi_snddaudio_driver_exit(void)
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{
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platform_driver_unregister(&sunxi_snddaudio_driver);
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}
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late_initcall(sunxi_snddaudio_driver_init);
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module_exit(sunxi_snddaudio_driver_exit);
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MODULE_AUTHOR("Wolfgang Huang");
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MODULE_DESCRIPTION("SUNXI snddaudio ALSA SoC Audio Card Driver");
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MODULE_LICENSE("GPL");
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