544 lines
14 KiB
C
544 lines
14 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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//
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// Midas audio support
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//
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// Copyright (C) 2018 Simon Shields <simon@lineageos.org>
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// Copyright (C) 2020 Samsung Electronics Co., Ltd.
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#include <linux/clk.h>
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#include <linux/gpio/consumer.h>
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#include <linux/mfd/wm8994/registers.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/regulator/consumer.h>
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#include <sound/jack.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include "i2s.h"
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#include "../codecs/wm8994.h"
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/*
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* The MCLK1 clock source is XCLKOUT with its mux set to the external fixed rate
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* oscillator (XXTI).
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*/
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#define MCLK1_RATE 24000000U
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#define MCLK2_RATE 32768U
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#define DEFAULT_FLL1_RATE 11289600U
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struct midas_priv {
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struct regulator *reg_mic_bias;
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struct regulator *reg_submic_bias;
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struct gpio_desc *gpio_fm_sel;
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struct gpio_desc *gpio_lineout_sel;
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unsigned int fll1_rate;
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struct snd_soc_jack headset_jack;
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};
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static int midas_start_fll1(struct snd_soc_pcm_runtime *rtd, unsigned int rate)
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{
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struct snd_soc_card *card = rtd->card;
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struct midas_priv *priv = snd_soc_card_get_drvdata(card);
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struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0);
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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int ret;
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if (!rate)
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rate = priv->fll1_rate;
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/*
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* If no new rate is requested, set FLL1 to a sane default for jack
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* detection.
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*/
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if (!rate)
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rate = DEFAULT_FLL1_RATE;
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if (rate != priv->fll1_rate && priv->fll1_rate) {
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/* while reconfiguring, switch to MCLK2 for SYSCLK */
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ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
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MCLK2_RATE, SND_SOC_CLOCK_IN);
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if (ret < 0) {
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dev_err(card->dev, "Unable to switch to MCLK2: %d\n", ret);
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return ret;
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}
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}
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ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
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MCLK1_RATE, rate);
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if (ret < 0) {
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dev_err(card->dev, "Failed to set FLL1 rate: %d\n", ret);
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return ret;
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}
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priv->fll1_rate = rate;
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ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_FLL1,
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priv->fll1_rate, SND_SOC_CLOCK_IN);
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if (ret < 0) {
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dev_err(card->dev, "Failed to set SYSCLK source: %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, SAMSUNG_I2S_OPCLK, 0,
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SAMSUNG_I2S_OPCLK_PCLK);
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if (ret < 0) {
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dev_err(card->dev, "Failed to set OPCLK source: %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 midas_stop_fll1(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 midas_priv *priv = snd_soc_card_get_drvdata(card);
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struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0);
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int ret;
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ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
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MCLK2_RATE, SND_SOC_CLOCK_IN);
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if (ret < 0) {
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dev_err(card->dev, "Unable to switch to MCLK2: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, 0, 0, 0);
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if (ret < 0) {
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dev_err(card->dev, "Unable to stop FLL1: %d\n", ret);
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return ret;
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}
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priv->fll1_rate = 0;
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return 0;
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}
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static int midas_aif1_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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unsigned int pll_out;
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/* AIF1CLK should be at least 3MHz for "optimal performance" */
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if (params_rate(params) == 8000 || params_rate(params) == 11025)
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pll_out = params_rate(params) * 512;
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else
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pll_out = params_rate(params) * 256;
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return midas_start_fll1(rtd, pll_out);
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}
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static const struct snd_soc_ops midas_aif1_ops = {
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.hw_params = midas_aif1_hw_params,
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};
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/*
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* We only have a single external speaker, so mix stereo data
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* to a single mono stream.
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*/
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static int midas_ext_spkmode(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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struct snd_soc_component *codec = snd_soc_dapm_to_component(w->dapm);
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int ret = 0;
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switch (event) {
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case SND_SOC_DAPM_PRE_PMU:
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ret = snd_soc_component_update_bits(codec, WM8994_SPKOUT_MIXERS,
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WM8994_SPKMIXR_TO_SPKOUTL_MASK,
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WM8994_SPKMIXR_TO_SPKOUTL);
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break;
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case SND_SOC_DAPM_POST_PMD:
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ret = snd_soc_component_update_bits(codec, WM8994_SPKOUT_MIXERS,
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WM8994_SPKMIXR_TO_SPKOUTL_MASK,
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0);
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break;
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}
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return ret;
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}
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static int midas_mic_bias(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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struct snd_soc_card *card = w->dapm->card;
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struct midas_priv *priv = snd_soc_card_get_drvdata(card);
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switch (event) {
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case SND_SOC_DAPM_PRE_PMU:
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return regulator_enable(priv->reg_mic_bias);
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case SND_SOC_DAPM_POST_PMD:
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return regulator_disable(priv->reg_mic_bias);
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}
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return 0;
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}
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static int midas_submic_bias(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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struct snd_soc_card *card = w->dapm->card;
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struct midas_priv *priv = snd_soc_card_get_drvdata(card);
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switch (event) {
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case SND_SOC_DAPM_PRE_PMU:
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return regulator_enable(priv->reg_submic_bias);
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case SND_SOC_DAPM_POST_PMD:
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return regulator_disable(priv->reg_submic_bias);
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}
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return 0;
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}
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static int midas_fm_set(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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struct snd_soc_card *card = w->dapm->card;
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struct midas_priv *priv = snd_soc_card_get_drvdata(card);
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if (!priv->gpio_fm_sel)
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return 0;
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switch (event) {
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case SND_SOC_DAPM_PRE_PMU:
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gpiod_set_value_cansleep(priv->gpio_fm_sel, 1);
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break;
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case SND_SOC_DAPM_POST_PMD:
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gpiod_set_value_cansleep(priv->gpio_fm_sel, 0);
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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 midas_line_set(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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struct snd_soc_card *card = w->dapm->card;
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struct midas_priv *priv = snd_soc_card_get_drvdata(card);
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if (!priv->gpio_lineout_sel)
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return 0;
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switch (event) {
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case SND_SOC_DAPM_PRE_PMU:
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gpiod_set_value_cansleep(priv->gpio_lineout_sel, 1);
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break;
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case SND_SOC_DAPM_POST_PMD:
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gpiod_set_value_cansleep(priv->gpio_lineout_sel, 0);
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break;
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}
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return 0;
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}
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static const struct snd_kcontrol_new midas_controls[] = {
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SOC_DAPM_PIN_SWITCH("HP"),
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SOC_DAPM_PIN_SWITCH("SPK"),
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SOC_DAPM_PIN_SWITCH("RCV"),
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SOC_DAPM_PIN_SWITCH("LINE"),
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SOC_DAPM_PIN_SWITCH("HDMI"),
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SOC_DAPM_PIN_SWITCH("Main Mic"),
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SOC_DAPM_PIN_SWITCH("Sub Mic"),
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SOC_DAPM_PIN_SWITCH("Headset Mic"),
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SOC_DAPM_PIN_SWITCH("FM In"),
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};
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static const struct snd_soc_dapm_widget midas_dapm_widgets[] = {
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SND_SOC_DAPM_HP("HP", NULL),
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SND_SOC_DAPM_SPK("SPK", midas_ext_spkmode),
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SND_SOC_DAPM_SPK("RCV", NULL),
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/* FIXME: toggle MAX77693 on i9300/i9305 */
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SND_SOC_DAPM_LINE("LINE", midas_line_set),
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SND_SOC_DAPM_LINE("HDMI", NULL),
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SND_SOC_DAPM_LINE("FM In", midas_fm_set),
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SND_SOC_DAPM_MIC("Headset Mic", NULL),
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SND_SOC_DAPM_MIC("Main Mic", midas_mic_bias),
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SND_SOC_DAPM_MIC("Sub Mic", midas_submic_bias),
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};
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static int midas_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 = snd_soc_get_pcm_runtime(card,
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&card->dai_link[0]);
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struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0);
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if (dapm->dev != aif1_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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return midas_stop_fll1(rtd);
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case SND_SOC_BIAS_PREPARE:
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return midas_start_fll1(rtd, 0);
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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 midas_late_probe(struct snd_soc_card *card)
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{
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struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card,
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&card->dai_link[0]);
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struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0);
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struct midas_priv *priv = snd_soc_card_get_drvdata(card);
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int ret;
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/* Use MCLK2 as SYSCLK for boot */
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ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, MCLK2_RATE,
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SND_SOC_CLOCK_IN);
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if (ret < 0) {
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dev_err(aif1_dai->dev, "Failed to switch to MCLK2: %d\n", ret);
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return ret;
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}
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ret = snd_soc_card_jack_new(card, "Headset",
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SND_JACK_HEADSET | SND_JACK_MECHANICAL |
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SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2 |
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SND_JACK_BTN_3 | SND_JACK_BTN_4 | SND_JACK_BTN_5,
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&priv->headset_jack);
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if (ret)
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return ret;
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wm8958_mic_detect(aif1_dai->component, &priv->headset_jack,
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NULL, NULL, NULL, NULL);
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return 0;
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}
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static struct snd_soc_dai_driver midas_ext_dai[] = {
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{
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.name = "Voice call",
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.playback = {
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.channels_min = 1,
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.channels_max = 2,
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.rate_min = 8000,
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.rate_max = 16000,
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.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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.capture = {
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.channels_min = 1,
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.channels_max = 2,
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.rate_min = 8000,
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.rate_max = 16000,
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.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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},
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{
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.name = "Bluetooth",
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.playback = {
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.channels_min = 1,
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.channels_max = 2,
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.rate_min = 8000,
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.rate_max = 16000,
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.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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.capture = {
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|
|
.channels_min = 1,
|
||
|
|
.channels_max = 2,
|
||
|
|
.rate_min = 8000,
|
||
|
|
.rate_max = 16000,
|
||
|
|
.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
|
||
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct snd_soc_component_driver midas_component = {
|
||
|
|
.name = "midas-audio",
|
||
|
|
};
|
||
|
|
|
||
|
|
SND_SOC_DAILINK_DEFS(wm1811_hifi,
|
||
|
|
DAILINK_COMP_ARRAY(COMP_EMPTY()),
|
||
|
|
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")),
|
||
|
|
DAILINK_COMP_ARRAY(COMP_EMPTY()));
|
||
|
|
|
||
|
|
SND_SOC_DAILINK_DEFS(wm1811_voice,
|
||
|
|
DAILINK_COMP_ARRAY(COMP_EMPTY()),
|
||
|
|
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif2")),
|
||
|
|
DAILINK_COMP_ARRAY(COMP_EMPTY()));
|
||
|
|
|
||
|
|
SND_SOC_DAILINK_DEFS(wm1811_bt,
|
||
|
|
DAILINK_COMP_ARRAY(COMP_EMPTY()),
|
||
|
|
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif3")),
|
||
|
|
DAILINK_COMP_ARRAY(COMP_EMPTY()));
|
||
|
|
|
||
|
|
static struct snd_soc_dai_link midas_dai[] = {
|
||
|
|
{
|
||
|
|
.name = "WM8994 AIF1",
|
||
|
|
.stream_name = "HiFi Primary",
|
||
|
|
.ops = &midas_aif1_ops,
|
||
|
|
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
|
||
|
|
SND_SOC_DAIFMT_CBM_CFM,
|
||
|
|
SND_SOC_DAILINK_REG(wm1811_hifi),
|
||
|
|
}, {
|
||
|
|
.name = "WM1811 Voice",
|
||
|
|
.stream_name = "Voice call",
|
||
|
|
.ignore_suspend = 1,
|
||
|
|
SND_SOC_DAILINK_REG(wm1811_voice),
|
||
|
|
}, {
|
||
|
|
.name = "WM1811 BT",
|
||
|
|
.stream_name = "Bluetooth",
|
||
|
|
.ignore_suspend = 1,
|
||
|
|
SND_SOC_DAILINK_REG(wm1811_bt),
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct snd_soc_card midas_card = {
|
||
|
|
.name = "Midas WM1811",
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
|
||
|
|
.dai_link = midas_dai,
|
||
|
|
.num_links = ARRAY_SIZE(midas_dai),
|
||
|
|
.controls = midas_controls,
|
||
|
|
.num_controls = ARRAY_SIZE(midas_controls),
|
||
|
|
.dapm_widgets = midas_dapm_widgets,
|
||
|
|
.num_dapm_widgets = ARRAY_SIZE(midas_dapm_widgets),
|
||
|
|
|
||
|
|
.set_bias_level = midas_set_bias_level,
|
||
|
|
.late_probe = midas_late_probe,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int midas_probe(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
struct device_node *cpu_dai_node = NULL, *codec_dai_node = NULL;
|
||
|
|
struct device_node *cpu = NULL, *codec = NULL;
|
||
|
|
struct snd_soc_card *card = &midas_card;
|
||
|
|
struct device *dev = &pdev->dev;
|
||
|
|
static struct snd_soc_dai_link *dai_link;
|
||
|
|
struct midas_priv *priv;
|
||
|
|
int ret, i;
|
||
|
|
|
||
|
|
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
||
|
|
if (!priv)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
snd_soc_card_set_drvdata(card, priv);
|
||
|
|
card->dev = dev;
|
||
|
|
|
||
|
|
priv->reg_mic_bias = devm_regulator_get(dev, "mic-bias");
|
||
|
|
if (IS_ERR(priv->reg_mic_bias)) {
|
||
|
|
dev_err(dev, "Failed to get mic bias regulator\n");
|
||
|
|
return PTR_ERR(priv->reg_mic_bias);
|
||
|
|
}
|
||
|
|
|
||
|
|
priv->reg_submic_bias = devm_regulator_get(dev, "submic-bias");
|
||
|
|
if (IS_ERR(priv->reg_submic_bias)) {
|
||
|
|
dev_err(dev, "Failed to get submic bias regulator\n");
|
||
|
|
return PTR_ERR(priv->reg_submic_bias);
|
||
|
|
}
|
||
|
|
|
||
|
|
priv->gpio_fm_sel = devm_gpiod_get_optional(dev, "fm-sel", GPIOD_OUT_HIGH);
|
||
|
|
if (IS_ERR(priv->gpio_fm_sel)) {
|
||
|
|
dev_err(dev, "Failed to get FM selection GPIO\n");
|
||
|
|
return PTR_ERR(priv->gpio_fm_sel);
|
||
|
|
}
|
||
|
|
|
||
|
|
priv->gpio_lineout_sel = devm_gpiod_get_optional(dev, "lineout-sel",
|
||
|
|
GPIOD_OUT_HIGH);
|
||
|
|
if (IS_ERR(priv->gpio_lineout_sel)) {
|
||
|
|
dev_err(dev, "Failed to get line out selection GPIO\n");
|
||
|
|
return PTR_ERR(priv->gpio_lineout_sel);
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = snd_soc_of_parse_card_name(card, "model");
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(dev, "Card name is not specified\n");
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(dev, "Audio routing invalid/unspecified\n");
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
cpu = of_get_child_by_name(dev->of_node, "cpu");
|
||
|
|
if (!cpu)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
codec = of_get_child_by_name(dev->of_node, "codec");
|
||
|
|
if (!codec) {
|
||
|
|
of_node_put(cpu);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
cpu_dai_node = of_parse_phandle(cpu, "sound-dai", 0);
|
||
|
|
of_node_put(cpu);
|
||
|
|
if (!cpu_dai_node) {
|
||
|
|
dev_err(dev, "parsing cpu/sound-dai failed\n");
|
||
|
|
of_node_put(codec);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
codec_dai_node = of_parse_phandle(codec, "sound-dai", 0);
|
||
|
|
of_node_put(codec);
|
||
|
|
if (!codec_dai_node) {
|
||
|
|
dev_err(dev, "audio-codec property invalid/missing\n");
|
||
|
|
ret = -EINVAL;
|
||
|
|
goto put_cpu_dai_node;
|
||
|
|
}
|
||
|
|
|
||
|
|
for_each_card_prelinks(card, i, dai_link) {
|
||
|
|
dai_link->codecs->of_node = codec_dai_node;
|
||
|
|
dai_link->cpus->of_node = cpu_dai_node;
|
||
|
|
dai_link->platforms->of_node = cpu_dai_node;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = devm_snd_soc_register_component(dev, &midas_component,
|
||
|
|
midas_ext_dai, ARRAY_SIZE(midas_ext_dai));
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(dev, "Failed to register component: %d\n", ret);
|
||
|
|
goto put_codec_dai_node;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = devm_snd_soc_register_card(dev, card);
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(dev, "Failed to register card: %d\n", ret);
|
||
|
|
goto put_codec_dai_node;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
put_codec_dai_node:
|
||
|
|
of_node_put(codec_dai_node);
|
||
|
|
put_cpu_dai_node:
|
||
|
|
of_node_put(cpu_dai_node);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct of_device_id midas_of_match[] = {
|
||
|
|
{ .compatible = "samsung,midas-audio" },
|
||
|
|
{ },
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(of, midas_of_match);
|
||
|
|
|
||
|
|
static struct platform_driver midas_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "midas-audio",
|
||
|
|
.of_match_table = midas_of_match,
|
||
|
|
.pm = &snd_soc_pm_ops,
|
||
|
|
},
|
||
|
|
.probe = midas_probe,
|
||
|
|
};
|
||
|
|
module_platform_driver(midas_driver);
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Simon Shields <simon@lineageos.org>");
|
||
|
|
MODULE_DESCRIPTION("ASoC support for Midas");
|
||
|
|
MODULE_LICENSE("GPL v2");
|