576 lines
15 KiB
C
576 lines
15 KiB
C
/*
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* Copyright (C) 2013-2014 Freescale Semiconductor, Inc.
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*
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* Based on imx-sgtl5000.c
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* Copyright (C) 2012 Freescale Semiconductor, Inc.
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* Copyright (C) 2012 Linaro Ltd.
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/module.h>
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#include <linux/of_platform.h>
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#include <linux/i2c.h>
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#include <linux/of_gpio.h>
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#include <linux/slab.h>
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#include <linux/gpio.h>
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#include <linux/clk.h>
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#include <sound/soc.h>
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#include <sound/jack.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/pinctrl/consumer.h>
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#include "../codecs/wm8962.h"
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#include "imx-audmux.h"
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#define DAI_NAME_SIZE 32
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struct imx_wm8962_data {
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struct snd_soc_dai_link dai;
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struct snd_soc_card card;
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char codec_dai_name[DAI_NAME_SIZE];
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char platform_name[DAI_NAME_SIZE];
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unsigned int clk_frequency;
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};
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struct imx_priv {
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int hp_gpio;
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int hp_active_low;
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int mic_gpio;
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int mic_active_low;
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bool amic_mono;
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bool dmic_mono;
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struct snd_soc_codec *codec;
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struct platform_device *pdev;
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struct snd_pcm_substream *first_stream;
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struct snd_pcm_substream *second_stream;
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};
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static struct imx_priv card_priv;
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static struct snd_soc_jack imx_hp_jack;
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static struct snd_soc_jack_pin imx_hp_jack_pins[] = {
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{
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.pin = "Headphone Jack",
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.mask = SND_JACK_HEADPHONE,
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},
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};
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static struct snd_soc_jack_gpio imx_hp_jack_gpio = {
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.name = "headphone detect",
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.report = SND_JACK_HEADPHONE,
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.debounce_time = 250,
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.invert = 0,
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};
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static struct snd_soc_jack imx_mic_jack;
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static struct snd_soc_jack_pin imx_mic_jack_pins[] = {
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{
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.pin = "AMIC",
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.mask = SND_JACK_MICROPHONE,
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},
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};
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static struct snd_soc_jack_gpio imx_mic_jack_gpio = {
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.name = "microphone detect",
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.report = SND_JACK_MICROPHONE,
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.debounce_time = 250,
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.invert = 0,
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};
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static int hpjack_status_check(void *data)
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{
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struct imx_priv *priv = &card_priv;
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struct platform_device *pdev = priv->pdev;
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char *envp[3], *buf;
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int hp_status, ret;
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if (!gpio_is_valid(priv->hp_gpio))
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return 0;
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hp_status = gpio_get_value(priv->hp_gpio) ? 1 : 0;
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buf = kmalloc(32, GFP_ATOMIC);
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if (!buf) {
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dev_err(&pdev->dev, "%s kmalloc failed\n", __func__);
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return -ENOMEM;
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}
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if (hp_status != priv->hp_active_low) {
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snprintf(buf, 32, "STATE=%d", 2);
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snd_soc_dapm_disable_pin(snd_soc_codec_get_dapm(priv->codec), "Ext Spk");
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ret = imx_hp_jack_gpio.report;
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} else {
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snprintf(buf, 32, "STATE=%d", 0);
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snd_soc_dapm_enable_pin(snd_soc_codec_get_dapm(priv->codec), "Ext Spk");
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ret = 0;
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}
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envp[0] = "NAME=headphone";
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envp[1] = buf;
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envp[2] = NULL;
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kobject_uevent_env(&pdev->dev.kobj, KOBJ_CHANGE, envp);
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kfree(buf);
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return ret;
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}
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static int micjack_status_check(void *data)
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{
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struct imx_priv *priv = &card_priv;
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struct platform_device *pdev = priv->pdev;
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char *envp[3], *buf;
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int mic_status, ret;
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if (!gpio_is_valid(priv->mic_gpio))
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return 0;
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mic_status = gpio_get_value(priv->mic_gpio) ? 1 : 0;
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if ((mic_status != priv->mic_active_low && priv->amic_mono)
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|| (mic_status == priv->mic_active_low && priv->dmic_mono))
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snd_soc_update_bits(priv->codec, WM8962_THREED1,
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WM8962_ADC_MONOMIX_MASK, WM8962_ADC_MONOMIX);
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else
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snd_soc_update_bits(priv->codec, WM8962_THREED1,
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WM8962_ADC_MONOMIX_MASK, 0);
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buf = kmalloc(32, GFP_ATOMIC);
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if (!buf) {
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dev_err(&pdev->dev, "%s kmalloc failed\n", __func__);
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return -ENOMEM;
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}
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if (mic_status != priv->mic_active_low) {
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snprintf(buf, 32, "STATE=%d", 2);
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snd_soc_dapm_disable_pin(snd_soc_codec_get_dapm(priv->codec), "DMIC");
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ret = imx_mic_jack_gpio.report;
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} else {
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snprintf(buf, 32, "STATE=%d", 0);
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snd_soc_dapm_enable_pin(snd_soc_codec_get_dapm(priv->codec), "DMIC");
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ret = 0;
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}
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envp[0] = "NAME=microphone";
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envp[1] = buf;
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envp[2] = NULL;
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kobject_uevent_env(&pdev->dev.kobj, KOBJ_CHANGE, envp);
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kfree(buf);
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return ret;
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}
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static const struct snd_soc_dapm_widget imx_wm8962_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_SPK("Ext Spk", NULL),
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SND_SOC_DAPM_MIC("AMIC", NULL),
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SND_SOC_DAPM_MIC("DMIC", NULL),
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};
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static int imx_hifi_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 imx_priv *priv = &card_priv;
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struct device *dev = &priv->pdev->dev;
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struct snd_soc_card *card = platform_get_drvdata(priv->pdev);
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struct imx_wm8962_data *data = snd_soc_card_get_drvdata(card);
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unsigned int sample_rate = params_rate(params);
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snd_pcm_format_t sample_format = params_format(params);
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u32 dai_format, pll_out;
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int ret = 0;
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if (!priv->first_stream) {
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priv->first_stream = substream;
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} else {
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priv->second_stream = substream;
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/* We suppose the two substream are using same params */
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return 0;
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}
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dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM;
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/* set codec DAI configuration */
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ret = snd_soc_dai_set_fmt(codec_dai, dai_format);
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if (ret) {
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dev_err(dev, "failed to set codec dai fmt: %d\n", ret);
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return ret;
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}
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if (sample_format == SNDRV_PCM_FORMAT_S24_LE)
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pll_out = sample_rate * 384;
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else
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pll_out = sample_rate * 256;
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ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, WM8962_FLL_MCLK,
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data->clk_frequency, pll_out);
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if (ret) {
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dev_err(dev, "failed to start FLL: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_FLL,
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pll_out, SND_SOC_CLOCK_IN);
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if (ret) {
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dev_err(dev, "failed to set SYSCLK: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static int imx_hifi_hw_free(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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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct imx_priv *priv = &card_priv;
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struct device *dev = &priv->pdev->dev;
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int ret;
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/* We don't need to handle anything if there's no substream running */
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if (!priv->first_stream)
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return 0;
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if (priv->first_stream == substream)
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priv->first_stream = priv->second_stream;
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priv->second_stream = NULL;
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if (!priv->first_stream) {
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/*
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* Continuously setting FLL would cause playback distortion.
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* We can fix it just by mute codec after playback.
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*/
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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snd_soc_dai_digital_mute(codec_dai, 1, substream->stream);
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/*
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* WM8962 doesn't allow us to continuously setting FLL,
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* So we set MCLK as sysclk once, which'd remove the limitation.
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*/
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
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0, SND_SOC_CLOCK_IN);
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if (ret < 0) {
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dev_err(dev, "failed to switch away from FLL: %d\n", ret);
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return ret;
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}
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/* Disable FLL and let codec do pm_runtime_put() */
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ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
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WM8962_FLL_MCLK, 0, 0);
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if (ret < 0) {
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dev_err(dev, "failed to stop FLL: %d\n", ret);
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return ret;
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}
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}
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return 0;
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}
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static struct snd_soc_ops imx_hifi_ops = {
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.hw_params = imx_hifi_hw_params,
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.hw_free = imx_hifi_hw_free,
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};
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static int imx_wm8962_gpio_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_card *card = rtd->card;
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struct snd_soc_codec *codec = rtd->codec;
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struct imx_priv *priv = &card_priv;
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priv->codec = codec;
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if (gpio_is_valid(priv->hp_gpio)) {
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imx_hp_jack_gpio.gpio = priv->hp_gpio;
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imx_hp_jack_gpio.jack_status_check = hpjack_status_check;
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snd_soc_card_jack_new(card, "Headphone Jack",
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SND_JACK_HEADPHONE, &imx_hp_jack,
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imx_hp_jack_pins, ARRAY_SIZE(imx_hp_jack_pins));
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snd_soc_jack_add_gpios(&imx_hp_jack, 1, &imx_hp_jack_gpio);
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}
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if (gpio_is_valid(priv->mic_gpio)) {
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imx_mic_jack_gpio.gpio = priv->mic_gpio;
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imx_mic_jack_gpio.jack_status_check = micjack_status_check;
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snd_soc_card_jack_new(card, "AMIC",
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SND_JACK_MICROPHONE, &imx_mic_jack,
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imx_mic_jack_pins, ARRAY_SIZE(imx_mic_jack_pins));
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snd_soc_jack_add_gpios(&imx_mic_jack, 1, &imx_mic_jack_gpio);
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} else if (priv->amic_mono || priv->dmic_mono) {
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/*
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* Permanent set monomix bit if only one microphone
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* is present on the board while it needs monomix.
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*/
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snd_soc_update_bits(priv->codec, WM8962_THREED1,
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WM8962_ADC_MONOMIX_MASK, WM8962_ADC_MONOMIX);
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}
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return 0;
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}
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static ssize_t headphone_show(struct device_driver *dev, char *buf)
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{
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struct imx_priv *priv = &card_priv;
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int hp_status;
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if (!gpio_is_valid(priv->hp_gpio)) {
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strcpy(buf, "no detect gpio connected\n");
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return strlen(buf);
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}
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/* Check if headphone is plugged in */
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hp_status = gpio_get_value(priv->hp_gpio) ? 1 : 0;
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if (hp_status != priv->hp_active_low)
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strcpy(buf, "headphone\n");
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else
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strcpy(buf, "speaker\n");
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return strlen(buf);
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}
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static DRIVER_ATTR_RO(headphone);
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static ssize_t microphone_show(struct device_driver *dev, char *buf)
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{
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struct imx_priv *priv = &card_priv;
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int mic_status;
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if (!gpio_is_valid(priv->mic_gpio)) {
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strcpy(buf, "no detect gpio connected\n");
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return strlen(buf);
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}
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/* Check if analog microphone is plugged in */
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mic_status = gpio_get_value(priv->mic_gpio) ? 1 : 0;
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if (mic_status != priv->mic_active_low)
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strcpy(buf, "amic\n");
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else
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strcpy(buf, "dmic\n");
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return strlen(buf);
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}
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static DRIVER_ATTR_RO(microphone);
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static int imx_wm8962_late_probe(struct snd_soc_card *card)
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{
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struct snd_soc_pcm_runtime *rtd;
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struct snd_soc_dai *codec_dai;
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struct imx_priv *priv = &card_priv;
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struct imx_wm8962_data *data = snd_soc_card_get_drvdata(card);
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struct device *dev = &priv->pdev->dev;
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int ret;
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rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
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codec_dai = rtd->codec_dai;
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
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data->clk_frequency, SND_SOC_CLOCK_IN);
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if (ret < 0)
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dev_err(dev, "failed to set sysclk in %s\n", __func__);
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return ret;
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}
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static int imx_wm8962_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 device_node *ssi_np, *codec_np;
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struct platform_device *ssi_pdev;
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struct imx_priv *priv = &card_priv;
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struct i2c_client *codec_dev;
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struct imx_wm8962_data *data;
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struct clk *codec_clk;
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int int_port, ext_port;
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int ret;
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priv->pdev = pdev;
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ret = of_property_read_u32(np, "mux-int-port", &int_port);
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if (ret) {
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dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
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return ret;
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}
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ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
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if (ret) {
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dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
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return ret;
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}
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/*
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* The port numbering in the hardware manual starts at 1, while
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* the audmux API expects it starts at 0.
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*/
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int_port--;
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ext_port--;
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ret = imx_audmux_v2_configure_port(int_port,
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IMX_AUDMUX_V2_PTCR_SYN |
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IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
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IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
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IMX_AUDMUX_V2_PTCR_TFSDIR |
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IMX_AUDMUX_V2_PTCR_TCLKDIR,
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IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
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if (ret) {
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dev_err(&pdev->dev, "audmux internal port setup failed\n");
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return ret;
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}
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ret = imx_audmux_v2_configure_port(ext_port,
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IMX_AUDMUX_V2_PTCR_SYN,
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IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
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if (ret) {
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dev_err(&pdev->dev, "audmux external port setup failed\n");
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return ret;
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}
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ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
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codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
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if (!ssi_np || !codec_np) {
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dev_err(&pdev->dev, "phandle missing or invalid\n");
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ret = -EINVAL;
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goto fail;
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}
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ssi_pdev = of_find_device_by_node(ssi_np);
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if (!ssi_pdev) {
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dev_err(&pdev->dev, "failed to find SSI platform device\n");
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ret = -EINVAL;
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goto fail;
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}
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codec_dev = of_find_i2c_device_by_node(codec_np);
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if (!codec_dev || !codec_dev->dev.driver) {
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dev_err(&pdev->dev, "failed to find codec platform device\n");
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ret = -EINVAL;
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goto fail;
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}
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priv->first_stream = NULL;
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priv->second_stream = NULL;
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data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
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if (!data) {
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ret = -ENOMEM;
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goto fail;
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}
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codec_clk = clk_get(&codec_dev->dev, NULL);
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if (IS_ERR(codec_clk)) {
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ret = PTR_ERR(codec_clk);
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dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret);
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goto fail;
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}
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data->clk_frequency = clk_get_rate(codec_clk);
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clk_put(codec_clk);
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priv->amic_mono = of_property_read_bool(codec_np, "amic-mono");
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priv->dmic_mono = of_property_read_bool(codec_np, "dmic-mono");
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priv->hp_gpio = of_get_named_gpio_flags(np, "hp-det-gpios", 0,
|
|
(enum of_gpio_flags *)&priv->hp_active_low);
|
|
priv->mic_gpio = of_get_named_gpio_flags(np, "mic-det-gpios", 0,
|
|
(enum of_gpio_flags *)&priv->mic_active_low);
|
|
|
|
data->dai.name = "HiFi";
|
|
data->dai.stream_name = "HiFi";
|
|
data->dai.codec_dai_name = "wm8962";
|
|
data->dai.codec_of_node = codec_np;
|
|
data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev);
|
|
data->dai.platform_of_node = ssi_np;
|
|
data->dai.ops = &imx_hifi_ops;
|
|
data->dai.init = &imx_wm8962_gpio_init;
|
|
data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
|
|
SND_SOC_DAIFMT_CBM_CFM;
|
|
|
|
data->card.dev = &pdev->dev;
|
|
ret = snd_soc_of_parse_card_name(&data->card, "model");
|
|
if (ret)
|
|
goto fail;
|
|
ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
|
|
if (ret)
|
|
goto fail;
|
|
data->card.num_links = 1;
|
|
data->card.owner = THIS_MODULE;
|
|
data->card.dai_link = &data->dai;
|
|
data->card.dapm_widgets = imx_wm8962_dapm_widgets;
|
|
data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8962_dapm_widgets);
|
|
|
|
data->card.late_probe = imx_wm8962_late_probe;
|
|
|
|
platform_set_drvdata(pdev, &data->card);
|
|
snd_soc_card_set_drvdata(&data->card, data);
|
|
|
|
ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
if (gpio_is_valid(priv->hp_gpio)) {
|
|
ret = driver_create_file(pdev->dev.driver, &driver_attr_headphone);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "create hp attr failed (%d)\n", ret);
|
|
goto fail_hp;
|
|
}
|
|
}
|
|
|
|
if (gpio_is_valid(priv->mic_gpio)) {
|
|
ret = driver_create_file(pdev->dev.driver, &driver_attr_microphone);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "create mic attr failed (%d)\n", ret);
|
|
goto fail_mic;
|
|
}
|
|
}
|
|
|
|
goto fail;
|
|
|
|
fail_mic:
|
|
driver_remove_file(pdev->dev.driver, &driver_attr_headphone);
|
|
fail_hp:
|
|
fail:
|
|
of_node_put(ssi_np);
|
|
of_node_put(codec_np);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int imx_wm8962_remove(struct platform_device *pdev)
|
|
{
|
|
driver_remove_file(pdev->dev.driver, &driver_attr_microphone);
|
|
driver_remove_file(pdev->dev.driver, &driver_attr_headphone);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id imx_wm8962_dt_ids[] = {
|
|
{ .compatible = "fsl,imx-audio-wm8962", },
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, imx_wm8962_dt_ids);
|
|
|
|
static struct platform_driver imx_wm8962_driver = {
|
|
.driver = {
|
|
.name = "imx-wm8962",
|
|
.pm = &snd_soc_pm_ops,
|
|
.of_match_table = imx_wm8962_dt_ids,
|
|
},
|
|
.probe = imx_wm8962_probe,
|
|
.remove = imx_wm8962_remove,
|
|
};
|
|
module_platform_driver(imx_wm8962_driver);
|
|
|
|
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
|
|
MODULE_DESCRIPTION("Freescale i.MX WM8962 ASoC machine driver");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS("platform:imx-wm8962");
|