588 lines
15 KiB
C
588 lines
15 KiB
C
/*
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* Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
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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/control.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 <linux/mfd/wm8994/registers.h>
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#include <linux/mfd/syscon.h>
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#include "../fsl/fsl_sai.h"
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#include "../codecs/wm8994.h"
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#define DAI_NAME_SIZE 32
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struct imx_wm8958_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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struct clk *mclk;
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unsigned int clk_frequency;
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bool is_codec_master;
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int sr_stream[2];
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struct regmap *gpr;
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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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struct snd_soc_component *component;
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struct platform_device *pdev;
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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 = 1,
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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);
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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_component_get_dapm(priv->component), "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_component_get_dapm(priv->component), "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 const struct snd_soc_dapm_widget imx_wm8958_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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};
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static const struct snd_soc_dapm_route imx_wm8958_dapm_route[] = {
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{"Headphone Jack", NULL, "HPOUT1L"},
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{"Headphone Jack", NULL, "HPOUT1R"},
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{"Ext Spk", NULL, "SPKOUTLP"},
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{"Ext Spk", NULL, "SPKOUTLN"},
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{"Ext Spk", NULL, "SPKOUTRP"},
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{"Ext Spk", NULL, "SPKOUTRN"},
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{"IN1LN", NULL, "MICBIAS2"},
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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 snd_soc_dai *cpu_dai = rtd->cpu_dai;
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struct snd_soc_card *card = rtd->card;
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struct device *dev = card->dev;
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struct imx_wm8958_data *data = snd_soc_card_get_drvdata(card);
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bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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unsigned int sample_rate = params_rate(params);
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unsigned int pll_out;
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int ret;
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if (tx && params_width(params) == 24) {
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if (sample_rate == 88200 || sample_rate == 96000 ||
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sample_rate == 48000 || sample_rate == 44100) {
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dev_err(dev, "Can't support sample rate %dHZ\n", sample_rate);
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return -EINVAL;
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}
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} else if (!tx && params_width(params) == 24) {
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if (sample_rate == 44100 || sample_rate == 48000) {
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dev_err(dev, "Can't support sample rate %dHZ\n", sample_rate);
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return -EINVAL;
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}
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}
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ret = snd_soc_dai_set_fmt(codec_dai, data->dai.dai_fmt);
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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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ret = snd_soc_dai_set_fmt(cpu_dai, data->dai.dai_fmt);
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if (ret) {
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dev_err(dev, "failed to set cpu dai fmt: %d\n", ret);
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return ret;
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}
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data->clk_frequency = clk_get_rate(data->mclk);
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if (!data->is_codec_master) {
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ret = snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT);
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if (ret) {
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dev_err(dev, "failed to set cpu sysclk: %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, WM8994_FLL_SRC_MCLK1,
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data->clk_frequency, SND_SOC_CLOCK_IN);
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if (ret) {
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dev_err(dev, "failed to set codec sysclk: %d\n", ret);
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return ret;
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}
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} else {
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data->sr_stream[tx] = sample_rate;
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if (params_width(params) == 24)
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pll_out = data->sr_stream[tx] * 384;
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else
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pll_out = data->sr_stream[tx] * 256;
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ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1,
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WM8994_FLL_SRC_MCLK1,
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data->clk_frequency,
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pll_out);
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if (ret) {
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dev_err(dev, "failed to set codec pll: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_IN);
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if (ret) {
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dev_err(dev, "failed to set cpu sysclk: %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, WM8994_SYSCLK_FLL1,
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pll_out, SND_SOC_CLOCK_OUT);
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if (ret) {
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dev_err(dev, "failed to set codec sysclk: %d\n", ret);
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return ret;
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}
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}
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/*
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* Set GPIO1 pin function to reserve, so that DAC1 and ADC1 using shared
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* LRCLK from DACLRCK1.
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*/
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snd_soc_component_update_bits(codec_dai->component, WM8994_GPIO_1, 0x1f, 0x2);
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/*
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* Clear ADC_OSR128 bit to support slower SYSCLK, and support ADC sample
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* rate 8K, 11.025K and 12K.
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*/
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snd_soc_component_update_bits(codec_dai->component, WM8994_OVERSAMPLING, 1<<1, 0);
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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 snd_soc_card *card = rtd->card;
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struct imx_wm8958_data *data = snd_soc_card_get_drvdata(card);
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bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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if (data->is_codec_master &&
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data->sr_stream[!tx] == 0 && data->sr_stream[tx]) {
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/*
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* We should connect AIF1CLK source to FLL after enable FLL, and
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* disconnet AIF1CLK source to FLL before disable FLL, otherwise
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* FLL worked abnormal.
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*/
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snd_soc_dai_set_sysclk(codec_dai, WM8994_FLL_SRC_MCLK1,
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data->clk_frequency, SND_SOC_CLOCK_OUT);
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/* Disable FLL1 after all stream finished. */
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snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, 0, 0, 0);
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}
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data->sr_stream[tx] = 0;
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return 0;
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}
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static u32 imx_wm8958_adc_rates[] = {
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8000, 11025, 12000, 16000, 22050,
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24000, 32000, 44100, 48000
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};
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static u32 imx_wm8958_dac_rates[] = {
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8000, 11025, 12000, 16000, 22050,
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24000, 32000, 44100, 48000, 88200, 96000
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};
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static struct snd_pcm_hw_constraint_list imx_wm8958_adc_rate_constraints = {
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.count = ARRAY_SIZE(imx_wm8958_adc_rates),
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.list = imx_wm8958_adc_rates,
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};
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static struct snd_pcm_hw_constraint_list imx_wm8958_dac_rate_constraints = {
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.count = ARRAY_SIZE(imx_wm8958_dac_rates),
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.list = imx_wm8958_dac_rates,
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};
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static int imx_hifi_startup(struct snd_pcm_substream *substream)
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{
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bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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int ret = 0;
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if (!tx)
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ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
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SNDRV_PCM_HW_PARAM_RATE, &imx_wm8958_adc_rate_constraints);
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else
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ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
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SNDRV_PCM_HW_PARAM_RATE, &imx_wm8958_dac_rate_constraints);
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return ret;
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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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.startup = imx_hifi_startup,
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};
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static int imx_wm8958_gpio_init(struct snd_soc_card *card)
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{
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struct snd_soc_pcm_runtime *rtd = list_first_entry(
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&card->rtd_list, struct snd_soc_pcm_runtime, list);
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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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int ret;
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priv->component = codec_dai->component;
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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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ret = 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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if (ret)
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return ret;
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ret = snd_soc_jack_add_gpios(&imx_hp_jack, 1,
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&imx_hp_jack_gpio);
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if (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 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);
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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 int imx_wm8958_set_bias_level(struct snd_soc_card *card,
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struct snd_soc_dapm_context *dapm,
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enum snd_soc_bias_level level)
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{
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struct snd_soc_pcm_runtime *rtd = list_first_entry(
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&card->rtd_list, struct snd_soc_pcm_runtime, list);
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct imx_wm8958_data *data = snd_soc_card_get_drvdata(card);
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int ret;
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if (dapm->dev != codec_dai->dev)
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return 0;
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switch (level) {
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case SND_SOC_BIAS_STANDBY:
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if (card->dapm.bias_level == SND_SOC_BIAS_OFF) {
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if (!IS_ERR(data->mclk)) {
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ret = clk_prepare_enable(data->mclk);
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if (ret) {
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dev_err(card->dev,
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"Failed to enable MCLK: %d\n",
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ret);
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return ret;
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}
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}
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}
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break;
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default:
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break;
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}
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return 0;
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}
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static int imx_wm8958_set_bias_level_post(struct snd_soc_card *card,
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struct snd_soc_dapm_context *dapm,
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enum snd_soc_bias_level level)
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{
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struct snd_soc_pcm_runtime *rtd = list_first_entry(
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&card->rtd_list, struct snd_soc_pcm_runtime, list);
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct imx_wm8958_data *data = snd_soc_card_get_drvdata(card);
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if (dapm->dev != codec_dai->dev)
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return 0;
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switch (level) {
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case SND_SOC_BIAS_OFF:
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if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
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if (!IS_ERR(data->mclk))
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clk_disable_unprepare(data->mclk);
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break;
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default:
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break;
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}
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card->dapm.bias_level = level;
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return 0;
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}
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static int of_parse_gpr(struct platform_device *pdev,
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struct imx_wm8958_data *data)
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{
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int ret;
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struct of_phandle_args args;
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if (of_device_is_compatible(pdev->dev.of_node,
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"fsl,imx7d-12x12-lpddr3-arm2-wm8958"))
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return 0;
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ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node,
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"gpr", 3, 0, &args);
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if (ret) {
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dev_warn(&pdev->dev, "failed to get gpr property\n");
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return ret;
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}
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data->gpr = syscon_node_to_regmap(args.np);
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if (IS_ERR(data->gpr)) {
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ret = PTR_ERR(data->gpr);
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dev_err(&pdev->dev, "failed to get gpr regmap\n");
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return ret;
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}
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regmap_update_bits(data->gpr, args.args[0], args.args[1],
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args.args[2]);
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return 0;
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}
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static int imx_wm8958_probe(struct platform_device *pdev)
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{
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struct device_node *cpu_np, *codec_np = NULL;
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struct device_node *np = pdev->dev.of_node;
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struct platform_device *cpu_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_wm8958_data *data;
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struct snd_soc_dai_link_component *dlc;
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int ret;
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priv->pdev = pdev;
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dlc = devm_kzalloc(&pdev->dev, 3 * sizeof(*dlc), GFP_KERNEL);
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if (!dlc)
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return -ENOMEM;
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cpu_np = of_parse_phandle(np, "cpu-dai", 0);
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if (!cpu_np) {
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dev_err(&pdev->dev, "cpu dai 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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codec_np = of_parse_phandle(np, "audio-codec", 0);
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if (!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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cpu_pdev = of_find_device_by_node(cpu_np);
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if (!cpu_pdev) {
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dev_err(&pdev->dev, "failed to find SAI 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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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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ret = of_parse_gpr(pdev, data);
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if (ret)
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goto fail;
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if (of_property_read_bool(np, "codec-master")) {
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data->dai.dai_fmt = SND_SOC_DAIFMT_CBM_CFM;
|
|
data->is_codec_master = true;
|
|
} else
|
|
data->dai.dai_fmt = SND_SOC_DAIFMT_CBS_CFS;
|
|
|
|
data->mclk = devm_clk_get(&codec_dev->dev, "mclk1");
|
|
if (IS_ERR(data->mclk)) {
|
|
ret = PTR_ERR(data->mclk);
|
|
dev_err(&pdev->dev, "failed to get codec clk: %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
priv->hp_gpio = of_get_named_gpio_flags(np, "hp-det-gpios", 0,
|
|
(enum of_gpio_flags *)&priv->hp_active_low);
|
|
|
|
data->dai.cpus = &dlc[0];
|
|
data->dai.num_cpus = 1;
|
|
data->dai.platforms = &dlc[1];
|
|
data->dai.num_platforms = 1;
|
|
data->dai.codecs = &dlc[2];
|
|
data->dai.num_codecs = 1;
|
|
|
|
data->dai.name = "HiFi";
|
|
data->dai.stream_name = "HiFi";
|
|
data->dai.codecs->dai_name = "wm8994-aif1";
|
|
data->dai.codecs->name = "wm8994-codec";
|
|
data->dai.cpus->dai_name = dev_name(&cpu_pdev->dev);
|
|
data->dai.platforms->of_node = cpu_np;
|
|
data->dai.ops = &imx_hifi_ops;
|
|
data->dai.dai_fmt |= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF;
|
|
data->card.set_bias_level = imx_wm8958_set_bias_level;
|
|
data->card.set_bias_level_post = imx_wm8958_set_bias_level_post;
|
|
data->card.owner = THIS_MODULE;
|
|
|
|
data->card.dev = &pdev->dev;
|
|
ret = snd_soc_of_parse_card_name(&data->card, "model");
|
|
if (ret)
|
|
goto fail;
|
|
|
|
data->card.num_links = 1;
|
|
data->card.dai_link = &data->dai;
|
|
data->card.dapm_widgets = imx_wm8958_dapm_widgets;
|
|
data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8958_dapm_widgets);
|
|
data->card.dapm_routes = imx_wm8958_dapm_route;
|
|
data->card.num_dapm_routes = ARRAY_SIZE(imx_wm8958_dapm_route);
|
|
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;
|
|
}
|
|
|
|
ret = imx_wm8958_gpio_init(&data->card);
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
fail:
|
|
if (cpu_np)
|
|
of_node_put(cpu_np);
|
|
if (codec_np)
|
|
of_node_put(codec_np);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int imx_wm8958_remove(struct platform_device *pdev)
|
|
{
|
|
driver_remove_file(pdev->dev.driver, &driver_attr_headphone);
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id imx_wm8958_dt_ids[] = {
|
|
{ .compatible = "fsl,imx-audio-wm8958", },
|
|
{ .compatible = "fsl,imx7d-12x12-lpddr3-arm2-wm8958", },
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, imx_wm8958_dt_ids);
|
|
|
|
static struct platform_driver imx_wm8958_driver = {
|
|
.driver = {
|
|
.name = "imx-wm8958",
|
|
.pm = &snd_soc_pm_ops,
|
|
.of_match_table = imx_wm8958_dt_ids,
|
|
},
|
|
.probe = imx_wm8958_probe,
|
|
.remove = imx_wm8958_remove,
|
|
};
|
|
module_platform_driver(imx_wm8958_driver);
|
|
|
|
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
|
|
MODULE_DESCRIPTION("Freescale i.MX WM8958 ASoC machine driver");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS("platform:imx-wm8958");
|