--- /dev/null
+/*
+ * Copyright (C) 2015 Samsung Electronics Co., Ltd.
+ *
+ * Authors: Inha Song <ideal.song@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+#include "i2s.h"
+#include "lpass.h"
+#include "../codecs/wm5110.h"
+#include "../codecs/max98504a.h"
+
+struct tm2_machine_priv {
+ struct snd_soc_codec *codec;
+ struct clk *codec_mclk;
+ int mic_bias;
+};
+
+static struct tm2_machine_priv tm2_machine_priv;
+
+static int tm2_aif1_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct tm2_machine_priv *priv =
+ snd_soc_card_get_drvdata(rtd->card);
+ unsigned int sysclk_rate;
+ unsigned int mclk_rate =
+ (unsigned int)clk_get_rate(priv->codec_mclk);
+ int ret;
+
+ dev_dbg(codec->dev, "params_rate: %d\n", params_rate(params));
+
+ /*
+ * SYSCLK Frequency is dependent on the Sample Rate. According to
+ * the sample rate, valid SYSCLK frequency is defined in manual.
+ * The manual recommand to select the highest possible SYSCLK
+ * frequency.
+ */
+ switch (params_rate(params)) {
+ case 4000:
+ case 8000:
+ case 12000:
+ case 16000:
+ case 24000:
+ case 32000:
+ case 48000:
+ case 96000:
+ case 192000:
+ /* highest possible SYSCLK frequency: 147.456MHz */
+ sysclk_rate = 147456000;
+ break;
+ case 11025:
+ case 22050:
+ case 44100:
+ case 88200:
+ case 176400:
+ /* highest possible SYSCLK frequency: 135.4752 MHz */
+ sysclk_rate = 135475200;
+ break;
+ default:
+ dev_err(codec->dev, "Not supported sample rate: %d\n",
+ params_rate(params));
+ return -EINVAL;
+ }
+
+ ret = snd_soc_codec_set_pll(codec, WM5110_FLL1,
+ ARIZONA_FLL_SRC_MCLK1,
+ mclk_rate,
+ sysclk_rate);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to start FLL: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_codec_set_pll(codec, WM5110_FLL1_REFCLK,
+ ARIZONA_FLL_SRC_MCLK1,
+ mclk_rate,
+ sysclk_rate);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to set FLL1 Source: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, ARIZONA_CLK_SYSCLK, 0, 0);
+ if (ret < 0) {
+ dev_err(codec_dai->dev, "Failed to set SYSCLK: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_codec_set_sysclk(codec, ARIZONA_CLK_SYSCLK,
+ ARIZONA_CLK_SRC_FLL1,
+ sysclk_rate,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to set SYSCLK Source: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int tm2_aif1_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+ int ret;
+
+ ret = clk_prepare_enable(priv->codec_mclk);
+ if (ret) {
+ dev_err(rtd->card->dev, "Failed to enable mclk: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void tm2_aif1_shutdown(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+
+ clk_disable_unprepare(priv->codec_mclk);
+}
+
+static struct snd_soc_ops tm2_aif1_ops = {
+ .startup = tm2_aif1_startup,
+ .shutdown = tm2_aif1_shutdown,
+ .hw_params = tm2_aif1_hw_params,
+};
+
+static int tm2_spk_power(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ max98504_set_speaker_status(1);
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ max98504_set_speaker_status(0);
+ break;
+ }
+
+ return 0;
+}
+
+static int tm2_mic_bias(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_card *card = w->dapm->card;
+ struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ gpio_set_value(priv->mic_bias, 1);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ gpio_set_value(priv->mic_bias, 0);
+ break;
+ }
+
+ return 0;
+}
+
+static int tm2_late_probe(struct snd_soc_card *card)
+{
+ struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
+ int ret;
+
+ ret = devm_gpio_request_one(card->dev, priv->mic_bias,
+ GPIOF_OUT_INIT_LOW, "MICBIAS_EN_AP");
+ if (ret) {
+ dev_err(card->dev,
+ "Failed to request mic_bias_gpio: %d\n", ret);
+ return ret;
+ }
+
+ gpio_direction_output(priv->mic_bias, 0);
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new card_controls[] = {
+ SOC_DAPM_PIN_SWITCH("SPK"),
+ SOC_DAPM_PIN_SWITCH("Main Mic"),
+};
+
+const struct snd_soc_dapm_widget machine_dapm_widgets[] = {
+ SND_SOC_DAPM_SPK("SPK", tm2_spk_power),
+ SND_SOC_DAPM_MIC("Main Mic", tm2_mic_bias),
+};
+
+static struct snd_soc_dai_link machine_dai[] = {
+ {
+ .name = "WM5110 AIF1",
+ .stream_name = "Pri_Dai",
+ .codec_dai_name = "wm5110-aif1",
+ .codec_name = "wm5110-codec",
+ .ops = &tm2_aif1_ops,
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ },
+};
+
+static struct snd_soc_card tm2_card = {
+ .owner = THIS_MODULE,
+
+ .dai_link = machine_dai,
+ .num_links = ARRAY_SIZE(machine_dai),
+ .controls = card_controls,
+ .num_controls = ARRAY_SIZE(card_controls),
+ .dapm_widgets = machine_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(machine_dapm_widgets),
+
+ .late_probe = tm2_late_probe,
+
+ .drvdata = &tm2_machine_priv,
+};
+
+static int tm2_wm5110_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct snd_soc_card *card = &tm2_card;
+ struct snd_soc_dai_link *dai_link = card->dai_link;
+ struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
+ int ret, i;
+
+ if (!np) {
+ dev_err(&pdev->dev, "of node is missing.\n");
+ return -ENODEV;
+ }
+
+ card->dev = &pdev->dev;
+
+ ret = snd_soc_of_parse_card_name(card, "samsung,model");
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Card name is not provided\n");
+ return ret;
+ }
+
+ ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
+ if (ret) {
+ dev_err(&pdev->dev, "Audio routing is not provided\n");
+ return ret;
+ }
+
+ for (i = 0; i < card->num_links; i++) {
+ dai_link[i].cpu_dai_name = NULL;
+ dai_link[i].cpu_name = NULL;
+ dai_link[i].cpu_of_node = of_parse_phandle(np,
+ "samsung,i2s-controller", 0);
+ if (!dai_link[i].cpu_of_node) {
+ dev_err(&pdev->dev, "i2s-controller property parse error\n");
+ return -EINVAL;
+ }
+
+ dai_link[i].platform_name = NULL;
+ dai_link[i].platform_of_node = dai_link[i].cpu_of_node;
+ }
+
+ priv->codec_mclk = devm_clk_get(&pdev->dev, "mclk");
+ if (IS_ERR(priv->codec_mclk)) {
+ dev_err(&pdev->dev, "Failed to get out clock\n");
+ return PTR_ERR(priv->codec_mclk);
+ }
+
+ priv->mic_bias = of_get_named_gpio(np, "mic_bias_gpio", 0);
+ if (!gpio_is_valid(priv->mic_bias)) {
+ dev_err(&pdev->dev, "Failed to get mic_bias_gpio\n");
+ return -EINVAL;
+ }
+
+ ret = devm_snd_soc_register_card(&pdev->dev, card);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register card: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id tm2_wm5110_of_match[] = {
+ { .compatible = "samsung,tm2-audio", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, tm2_wm5110_of_match);
+
+static struct platform_driver tm2_wm5110_driver = {
+ .driver = {
+ .name = "tm2-audio",
+ .owner = THIS_MODULE,
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = tm2_wm5110_of_match,
+ },
+ .probe = tm2_wm5110_probe,
+};
+
+module_platform_driver(tm2_wm5110_driver);
+
+MODULE_AUTHOR("Inha Song <ideal.song@samsung.com>");
+MODULE_DESCRIPTION("ALSA SoC TM2 Audio Support");
+MODULE_LICENSE("GPL v2");