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Fri, 10 Jul 2020 17:35:16 +0000 (GMT) From: Sylwester Nawrocki To: broonie@kernel.org, krzk@kernel.org Cc: simon@lineageos.org, alsa-devel@alsa-project.org, devicetree@vger.kernel.org, robh+dt@kernel.org, b.zolnierkie@samsung.com, m.szyprowski@samsung.com, linux-samsung-soc@vger.kernel.org, s.nawrocki@samsung.com Subject: [PATCH 2/3] ASoC: samsung: Add sound support for Midas boards Date: Fri, 10 Jul 2020 19:34:59 +0200 Message-Id: <20200710173500.22365-2-s.nawrocki@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200710173500.22365-1-s.nawrocki@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFuphleLIzCtJLcpLzFFi42LZduznOd2ryzjiDW61ylpcuXiIyWLjjPWs FlMfPmGzmH/kHKvF+fMb2C1mnN/HZLH2yF12i9a9R9gtDr9pZ7XYcuY2mwOXx4bPTWwem1Z1 snm0rN/E5tG3ZRWjx+dNcgGsUVw2Kak5mWWpRfp2CVwZ634dYi2Y18VY8ezebuYGxuVFXYyc HBICJhI77h9m7WLk4hASWMEosWHZcnYI5wujxMtF76Ccz4wSLy60M8G07F52hw0isZxR4tGc JcxwLe++dbCDVLEJGEr0Hu1jBLFFBNQl7s9oAlvCLHCTUWLmpj6gdg4OYQE3ie4DAiA1LAKq Ei8vTmMBsXkFrCVev53NCLFNXmL1hgPMIOWcAjYSB765gIyREOhml3h2FORwkBoXiRvvWtkh bGGJV8e3QNkyEv93zmeCaGhmlOjZfZsdwpnAKHH/+AKoDdYSd879AjuIWUBTYv0ufYiwo8TC JW/ZQcISAnwSN94KgoSZgcxJ26YzQ4R5JTrahCCqVSR+r5oODSApie4n/1kgbA+J5XOOQsOn n1Fi5bpLLBMY5WchLFvAyLiKUTy1tDg3PbXYKC+1XK84Mbe4NC9dLzk/dxMjMI2c/nf8yw7G XX+SDjEKcDAq8fAuSOSIF2JNLCuuzD3EKMHBrCTC63T2dJwQb0piZVVqUX58UWlOavEhRmkO FiVxXuNFL2OFBNITS1KzU1MLUotgskwcnFINjN2FHL3y88Qa54n2Wf5T11tVJ7IormxjWbH5 7eN7Z/rNm7punXGXpn3amgb+7FfCU7tlzatOT3/bJZlaV/ti9WMB1+gvp/T+9M55xHxL9tGD 08zz9Sf7Ohbv+T87oCS46FwpX/Dr5td3Vy2xnckc+GeBi5FfxZq+XdtUj3GtePshKD00vszq ixJLcUaioRZzUXEiAL0nqh8fAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrFLMWRmVeSWpSXmKPExsVy+t/xu7pXlnHEGxy8Z2Nx5eIhJouNM9az Wkx9+ITNYv6Rc6wW589vYLeYcX4fk8XaI3fZLVr3HmG3OPymndViy5nbbA5cHhs+N7F5bFrV yebRsn4Tm0ffllWMHp83yQWwRunZFOWXlqQqZOQXl9gqRRtaGOkZWlroGZlY6hkam8daGZkq 6dvZpKTmZJalFunbJehlrPt1iLVgXhdjxbN7u5kbGJcXdTFyckgImEjsXnaHDcQWEljKKPH4 iHcXIwdQXEpifosSRImwxJ9rXUAlXEAlnxglnuxrBatnEzCU6D3axwhiiwhoSnTMu80KUsQs 8JBRYv/x+4wgg4QF3CS6DwiA1LAIqEq8vDiNBcTmFbCWeP12NiPEAnmJ1RsOMIOUcwrYSBz4 5gJxjrXEo1e/WScw8i1gZFjFKJJaWpybnltspFecmFtcmpeul5yfu4kRGM7bjv3csoOx613w IUYBDkYlHt4FiRzxQqyJZcWVuYcYJTiYlUR4nc6ejhPiTUmsrEotyo8vKs1JLT7EaAp000Rm KdHkfGCs5ZXEG5oamltYGpobmxubWSiJ83YIHIwREkhPLEnNTk0tSC2C6WPi4JRqYNzYHiC8 LoO5tTRjpqrmS9dADSmt2h7vi8umhX1mv3WDTel3KuvW0A2fJRbW/JDOOihQzPT40ySx48r3 uVMTT36o5W48vUB0447arpSalRGJCw/tm7Ty4+1lW34Yq93+ukHu8rMtQZu4dp60XLVWU2PC /YZ3ufFJt3eu3HV5wY9PWw697lSZ73xBiaU4I9FQi7moOBEAwJcP1n0CAAA= X-CMS-MailID: 20200710173517eucas1p20c325719e385995f9f094f12d87e1dcb X-Msg-Generator: CA X-RootMTR: 20200710173517eucas1p20c325719e385995f9f094f12d87e1dcb X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200710173517eucas1p20c325719e385995f9f094f12d87e1dcb References: <20200710173500.22365-1-s.nawrocki@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org From: Simon Shields This patch adds support for voice and BT calls, along with standard audio output via the speaker, earpiece, headphone jack, HDMI, and any accessories compatible with Midas boards. This patch also supports headphone/headset detection and headsets with inline buttons. Signed-off-by: Simon Shields [m.szyprowski: adaptation to v5.1+ kernels (DAI links initialization)] Signed-off-by: Marek Szyprowski [s.nawrocki: removal of the clk API calls for CODEC MCLK, the jack data structure moved to struct midas_priv, coding style and typo fixes, conversion to new cpu/codec/dai-node binding] Signed-off-by: Sylwester Nawrocki Acked-by: Krzysztof Kozlowski --- sound/soc/samsung/Kconfig | 8 + sound/soc/samsung/Makefile | 2 + sound/soc/samsung/midas_wm1811.c | 543 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 553 insertions(+) create mode 100644 sound/soc/samsung/midas_wm1811.c diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig index 4b5c348..1431be4 100644 --- a/sound/soc/samsung/Kconfig +++ b/sound/soc/samsung/Kconfig @@ -225,4 +225,12 @@ config SND_SOC_SAMSUNG_ARIES_WM8994 via ADC, GPIOs, and an extcon device. Switching between the Mic and TV-Out path is also handled. +config SND_SOC_SAMSUNG_MIDAS_WM1811 + tristate "SoC I2S Audio support for Midas boards" + depends on SND_SOC_SAMSUNG + select SND_SAMSUNG_I2S + select SND_SOC_WM8994 + help + Say Y if you want to add support for SoC audio on the Midas boards. + endif #SND_SOC_SAMSUNG diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile index 22259f7..398e843 100644 --- a/sound/soc/samsung/Makefile +++ b/sound/soc/samsung/Makefile @@ -42,6 +42,7 @@ snd-soc-odroid-objs := odroid.o snd-soc-arndale-objs := arndale.o snd-soc-tm2-wm5110-objs := tm2_wm5110.o snd-soc-aries-wm8994-objs := aries_wm8994.o +snd-soc-midas-wm1811-objs := midas_wm1811.o obj-$(CONFIG_SND_SOC_SAMSUNG_JIVE_WM8750) += snd-soc-jive-wm8750.o obj-$(CONFIG_SND_SOC_SAMSUNG_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o @@ -66,3 +67,4 @@ obj-$(CONFIG_SND_SOC_ODROID) += snd-soc-odroid.o obj-$(CONFIG_SND_SOC_ARNDALE) += snd-soc-arndale.o obj-$(CONFIG_SND_SOC_SAMSUNG_TM2_WM5110) += snd-soc-tm2-wm5110.o obj-$(CONFIG_SND_SOC_SAMSUNG_ARIES_WM8994) += snd-soc-aries-wm8994.o +obj-$(CONFIG_SND_SOC_SAMSUNG_MIDAS_WM1811) += snd-soc-midas-wm1811.o diff --git a/sound/soc/samsung/midas_wm1811.c b/sound/soc/samsung/midas_wm1811.c new file mode 100644 index 0000000..d03340c --- /dev/null +++ b/sound/soc/samsung/midas_wm1811.c @@ -0,0 +1,543 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Midas audio support +// +// Copyright (C) 2018 Simon Shields +// Copyright (C) 2020 Samsung Electronics Co., Ltd. + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "i2s.h" +#include "../codecs/wm8994.h" + +/* + * The MCLK1 clock source is XCLKOUT with its mux set to the external fixed rate + * oscillator (XXTI). + */ +#define MCLK1_RATE 24000000U +#define MCLK2_RATE 32768U +#define DEFAULT_FLL1_RATE 11289600U + +struct midas_priv { + struct regulator *reg_mic_bias; + struct regulator *reg_submic_bias; + struct gpio_desc *gpio_fm_sel; + struct gpio_desc *gpio_lineout_sel; + unsigned int fll1_rate; + + struct snd_soc_jack headset_jack; +}; + +static int midas_start_fll1(struct snd_soc_pcm_runtime *rtd, unsigned int rate) +{ + struct snd_soc_card *card = rtd->card; + struct midas_priv *priv = snd_soc_card_get_drvdata(card); + struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0); + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + int ret; + + if (!rate) + rate = priv->fll1_rate; + /* + * If no new rate is requested, set FLL1 to a sane default for jack + * detection. + */ + if (!rate) + rate = DEFAULT_FLL1_RATE; + + if (rate != priv->fll1_rate && priv->fll1_rate) { + /* while reconfiguring, switch to MCLK2 for SYSCLK */ + ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, + MCLK2_RATE, SND_SOC_CLOCK_IN); + if (ret < 0) { + dev_err(card->dev, "Unable to switch to MCLK2: %d\n", ret); + return ret; + } + } + + ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, + MCLK1_RATE, rate); + if (ret < 0) { + dev_err(card->dev, "Failed to set FLL1 rate: %d\n", ret); + return ret; + } + priv->fll1_rate = rate; + + ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_FLL1, + priv->fll1_rate, SND_SOC_CLOCK_IN); + if (ret < 0) { + dev_err(card->dev, "Failed to set SYSCLK source: %d\n", ret); + return ret; + } + + ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK, 0, + SAMSUNG_I2S_OPCLK_PCLK); + if (ret < 0) { + dev_err(card->dev, "Failed to set OPCLK source: %d\n", ret); + return ret; + } + + return 0; +} + +static int midas_stop_fll1(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_card *card = rtd->card; + struct midas_priv *priv = snd_soc_card_get_drvdata(card); + struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0); + int ret; + + ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, + MCLK2_RATE, SND_SOC_CLOCK_IN); + if (ret < 0) { + dev_err(card->dev, "Unable to switch to MCLK2: %d\n", ret); + return ret; + } + + ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, 0, 0, 0); + if (ret < 0) { + dev_err(card->dev, "Unable to stop FLL1: %d\n", ret); + return ret; + } + + priv->fll1_rate = 0; + + return 0; +} + +static int midas_aif1_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + unsigned int pll_out; + + /* AIF1CLK should be at least 3MHz for "optimal performance" */ + if (params_rate(params) == 8000 || params_rate(params) == 11025) + pll_out = params_rate(params) * 512; + else + pll_out = params_rate(params) * 256; + + return midas_start_fll1(rtd, pll_out); +} + +static struct snd_soc_ops midas_aif1_ops = { + .hw_params = midas_aif1_hw_params, +}; + +/* + * We only have a single external speaker, so mix stereo data + * to a single mono stream. + */ +static int midas_ext_spkmode(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *codec = snd_soc_dapm_to_component(w->dapm); + int ret = 0; + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + ret = snd_soc_component_update_bits(codec, WM8994_SPKOUT_MIXERS, + WM8994_SPKMIXR_TO_SPKOUTL_MASK, + WM8994_SPKMIXR_TO_SPKOUTL); + break; + case SND_SOC_DAPM_POST_PMD: + ret = snd_soc_component_update_bits(codec, WM8994_SPKOUT_MIXERS, + WM8994_SPKMIXR_TO_SPKOUTL_MASK, + 0); + break; + } + + return ret; +} + +static int midas_mic_bias(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_card *card = w->dapm->card; + struct midas_priv *priv = snd_soc_card_get_drvdata(card); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + return regulator_enable(priv->reg_mic_bias); + case SND_SOC_DAPM_POST_PMD: + return regulator_disable(priv->reg_mic_bias); + } + + return 0; +} + +static int midas_submic_bias(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_card *card = w->dapm->card; + struct midas_priv *priv = snd_soc_card_get_drvdata(card); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + return regulator_enable(priv->reg_submic_bias); + case SND_SOC_DAPM_POST_PMD: + return regulator_disable(priv->reg_submic_bias); + } + + return 0; +} + +static int midas_fm_set(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_card *card = w->dapm->card; + struct midas_priv *priv = snd_soc_card_get_drvdata(card); + + if (!priv->gpio_fm_sel) + return 0; + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + gpiod_set_value_cansleep(priv->gpio_fm_sel, 1); + break; + case SND_SOC_DAPM_POST_PMD: + gpiod_set_value_cansleep(priv->gpio_fm_sel, 0); + break; + } + + return 0; +} + +static int midas_line_set(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_card *card = w->dapm->card; + struct midas_priv *priv = snd_soc_card_get_drvdata(card); + + if (!priv->gpio_lineout_sel) + return 0; + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + gpiod_set_value_cansleep(priv->gpio_lineout_sel, 1); + break; + case SND_SOC_DAPM_POST_PMD: + gpiod_set_value_cansleep(priv->gpio_lineout_sel, 0); + break; + } + + return 0; +} + +static const struct snd_kcontrol_new midas_controls[] = { + SOC_DAPM_PIN_SWITCH("HP"), + + SOC_DAPM_PIN_SWITCH("SPK"), + SOC_DAPM_PIN_SWITCH("RCV"), + + SOC_DAPM_PIN_SWITCH("LINE"), + SOC_DAPM_PIN_SWITCH("HDMI"), + + SOC_DAPM_PIN_SWITCH("Main Mic"), + SOC_DAPM_PIN_SWITCH("Sub Mic"), + SOC_DAPM_PIN_SWITCH("Headset Mic"), + + SOC_DAPM_PIN_SWITCH("FM In"), +}; + +static const struct snd_soc_dapm_widget midas_dapm_widgets[] = { + SND_SOC_DAPM_HP("HP", NULL), + + SND_SOC_DAPM_SPK("SPK", midas_ext_spkmode), + SND_SOC_DAPM_SPK("RCV", NULL), + + /* FIXME: toggle MAX77693 on i9300/i9305 */ + SND_SOC_DAPM_LINE("LINE", midas_line_set), + SND_SOC_DAPM_LINE("HDMI", NULL), + SND_SOC_DAPM_LINE("FM In", midas_fm_set), + + SND_SOC_DAPM_MIC("Headset Mic", NULL), + SND_SOC_DAPM_MIC("Main Mic", midas_mic_bias), + SND_SOC_DAPM_MIC("Sub Mic", midas_submic_bias), +}; + +static int midas_set_bias_level(struct snd_soc_card *card, + struct snd_soc_dapm_context *dapm, + enum snd_soc_bias_level level) +{ + struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card, + &card->dai_link[0]); + struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0); + + if (dapm->dev != aif1_dai->dev) + return 0; + + switch (level) { + case SND_SOC_BIAS_STANDBY: + return midas_stop_fll1(rtd); + case SND_SOC_BIAS_PREPARE: + return midas_start_fll1(rtd, 0); + default: + break; + } + + return 0; +} + +static int midas_late_probe(struct snd_soc_card *card) +{ + struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card, + &card->dai_link[0]); + struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0); + struct midas_priv *priv = snd_soc_card_get_drvdata(card); + int ret; + + /* Use MCLK2 as SYSCLK for boot */ + ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, MCLK2_RATE, + SND_SOC_CLOCK_IN); + if (ret < 0) { + dev_err(aif1_dai->dev, "Failed to switch to MCLK2: %d\n", ret); + return ret; + } + + ret = snd_soc_card_jack_new(card, "Headset", + SND_JACK_HEADSET | SND_JACK_MECHANICAL | + SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2 | + SND_JACK_BTN_3 | SND_JACK_BTN_4 | SND_JACK_BTN_5, + &priv->headset_jack, NULL, 0); + if (ret) + return ret; + + wm8958_mic_detect(aif1_dai->component, &priv->headset_jack, + NULL, NULL, NULL, NULL); + return 0; +} + +static struct snd_soc_dai_driver midas_ext_dai[] = { + { + .name = "Voice call", + .playback = { + .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, + }, + .capture = { + .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, + }, + }, + { + .name = "Bluetooth", + .playback = { + .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, + }, + .capture = { + .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, + .owner = THIS_MODULE, + .pm = &snd_soc_pm_ops, + }, + .probe = midas_probe, +}; +module_platform_driver(midas_driver); + +MODULE_AUTHOR("Simon Shields "); +MODULE_DESCRIPTION("ASoC support for Midas"); +MODULE_LICENSE("GPL v2");