From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- sound/soc/samsung/odroid.c | 352 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 352 insertions(+) create mode 100644 sound/soc/samsung/odroid.c (limited to 'sound/soc/samsung/odroid.c') diff --git a/sound/soc/samsung/odroid.c b/sound/soc/samsung/odroid.c new file mode 100644 index 0000000000..c93cb5a864 --- /dev/null +++ b/sound/soc/samsung/odroid.c @@ -0,0 +1,352 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (C) 2017 Samsung Electronics Co., Ltd. + +#include +#include +#include +#include +#include +#include +#include +#include "i2s.h" +#include "i2s-regs.h" + +struct odroid_priv { + struct snd_soc_card card; + struct clk *clk_i2s_bus; + struct clk *sclk_i2s; + + /* Spinlock protecting fields below */ + spinlock_t lock; + unsigned int be_sample_rate; + bool be_active; +}; + +static int odroid_card_fe_startup(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2); + + return 0; +} + +static int odroid_card_fe_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct odroid_priv *priv = snd_soc_card_get_drvdata(rtd->card); + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&priv->lock, flags); + if (priv->be_active && priv->be_sample_rate != params_rate(params)) + ret = -EINVAL; + spin_unlock_irqrestore(&priv->lock, flags); + + return ret; +} + +static const struct snd_soc_ops odroid_card_fe_ops = { + .startup = odroid_card_fe_startup, + .hw_params = odroid_card_fe_hw_params, +}; + +static int odroid_card_be_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct odroid_priv *priv = snd_soc_card_get_drvdata(rtd->card); + unsigned int pll_freq, rclk_freq, rfs; + unsigned long flags; + int ret; + + switch (params_rate(params)) { + case 64000: + pll_freq = 196608001U; + rfs = 384; + break; + case 44100: + case 88200: + pll_freq = 180633609U; + rfs = 512; + break; + case 32000: + case 48000: + case 96000: + pll_freq = 196608001U; + rfs = 512; + break; + default: + return -EINVAL; + } + + ret = clk_set_rate(priv->clk_i2s_bus, pll_freq / 2 + 1); + if (ret < 0) + return ret; + + /* + * We add 2 to the rclk_freq value in order to avoid too low clock + * frequency values due to the EPLL output frequency not being exact + * multiple of the audio sampling rate. + */ + rclk_freq = params_rate(params) * rfs + 2; + + ret = clk_set_rate(priv->sclk_i2s, rclk_freq); + if (ret < 0) + return ret; + + if (rtd->dai_link->num_codecs > 1) { + struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 1); + + ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk_freq, + SND_SOC_CLOCK_IN); + if (ret < 0) + return ret; + } + + spin_lock_irqsave(&priv->lock, flags); + priv->be_sample_rate = params_rate(params); + spin_unlock_irqrestore(&priv->lock, flags); + + return 0; +} + +static int odroid_card_be_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct odroid_priv *priv = snd_soc_card_get_drvdata(rtd->card); + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + priv->be_active = true; + break; + + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + priv->be_active = false; + break; + } + + spin_unlock_irqrestore(&priv->lock, flags); + + return 0; +} + +static const struct snd_soc_ops odroid_card_be_ops = { + .hw_params = odroid_card_be_hw_params, + .trigger = odroid_card_be_trigger, +}; + +/* DAPM routes for backward compatibility with old DTS */ +static const struct snd_soc_dapm_route odroid_dapm_routes[] = { + { "I2S Playback", NULL, "Mixer DAI TX" }, + { "HiFi Playback", NULL, "Mixer DAI TX" }, +}; + +SND_SOC_DAILINK_DEFS(primary, + DAILINK_COMP_ARRAY(COMP_EMPTY()), + DAILINK_COMP_ARRAY(COMP_DUMMY()), + DAILINK_COMP_ARRAY(COMP_PLATFORM("3830000.i2s"))); + +SND_SOC_DAILINK_DEFS(mixer, + DAILINK_COMP_ARRAY(COMP_DUMMY()), + DAILINK_COMP_ARRAY(COMP_EMPTY()), + DAILINK_COMP_ARRAY(COMP_DUMMY())); + +SND_SOC_DAILINK_DEFS(secondary, + DAILINK_COMP_ARRAY(COMP_EMPTY()), + DAILINK_COMP_ARRAY(COMP_DUMMY()), + DAILINK_COMP_ARRAY(COMP_PLATFORM("3830000.i2s-sec"))); + +static struct snd_soc_dai_link odroid_card_dais[] = { + { + /* Primary FE <-> BE link */ + .ops = &odroid_card_fe_ops, + .name = "Primary", + .stream_name = "Primary", + .dynamic = 1, + .dpcm_playback = 1, + SND_SOC_DAILINK_REG(primary), + }, { + /* BE <-> CODECs link */ + .name = "I2S Mixer", + .ops = &odroid_card_be_ops, + .no_pcm = 1, + .dpcm_playback = 1, + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, + SND_SOC_DAILINK_REG(mixer), + }, { + /* Secondary FE <-> BE link */ + .playback_only = 1, + .ops = &odroid_card_fe_ops, + .name = "Secondary", + .stream_name = "Secondary", + .dynamic = 1, + .dpcm_playback = 1, + SND_SOC_DAILINK_REG(secondary), + } +}; + +static int odroid_audio_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *cpu_dai = NULL; + struct device_node *cpu, *codec; + struct odroid_priv *priv; + struct snd_soc_card *card; + struct snd_soc_dai_link *link, *codec_link; + int num_pcms, ret, i; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + card = &priv->card; + card->dev = dev; + + card->owner = THIS_MODULE; + card->fully_routed = true; + + spin_lock_init(&priv->lock); + snd_soc_card_set_drvdata(card, priv); + + ret = snd_soc_of_parse_card_name(card, "model"); + if (ret < 0) + return ret; + + if (of_property_present(dev->of_node, "samsung,audio-widgets")) { + ret = snd_soc_of_parse_audio_simple_widgets(card, + "samsung,audio-widgets"); + if (ret < 0) + return ret; + } + + ret = 0; + if (of_property_present(dev->of_node, "audio-routing")) + ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); + else if (of_property_present(dev->of_node, "samsung,audio-routing")) + ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing"); + if (ret < 0) + return ret; + + card->dai_link = odroid_card_dais; + card->num_links = ARRAY_SIZE(odroid_card_dais); + + cpu = of_get_child_by_name(dev->of_node, "cpu"); + codec = of_get_child_by_name(dev->of_node, "codec"); + link = card->dai_link; + codec_link = &card->dai_link[1]; + + /* + * For backwards compatibility create the secondary CPU DAI link only + * if there are 2 CPU DAI entries in the cpu sound-dai property in DT. + * Also add required DAPM routes not available in old DTS. + */ + num_pcms = of_count_phandle_with_args(cpu, "sound-dai", + "#sound-dai-cells"); + if (num_pcms == 1) { + card->dapm_routes = odroid_dapm_routes; + card->num_dapm_routes = ARRAY_SIZE(odroid_dapm_routes); + card->num_links--; + } + + for (i = 0; i < num_pcms; i++, link += 2) { + ret = snd_soc_of_get_dai_name(cpu, &link->cpus->dai_name, i); + if (ret < 0) + break; + } + if (ret == 0) { + cpu_dai = of_parse_phandle(cpu, "sound-dai", 0); + if (!cpu_dai) + ret = -EINVAL; + } + + of_node_put(cpu); + if (ret < 0) + goto err_put_node; + + ret = snd_soc_of_get_dai_link_codecs(dev, codec, codec_link); + if (ret < 0) + goto err_put_cpu_dai; + + /* Set capture capability only for boards with the MAX98090 CODEC */ + if (codec_link->num_codecs > 1) { + card->dai_link[0].dpcm_capture = 1; + card->dai_link[1].dpcm_capture = 1; + } + + priv->sclk_i2s = of_clk_get_by_name(cpu_dai, "i2s_opclk1"); + if (IS_ERR(priv->sclk_i2s)) { + ret = PTR_ERR(priv->sclk_i2s); + goto err_put_cpu_dai; + } + + priv->clk_i2s_bus = of_clk_get_by_name(cpu_dai, "iis"); + if (IS_ERR(priv->clk_i2s_bus)) { + ret = PTR_ERR(priv->clk_i2s_bus); + goto err_put_sclk; + } + + ret = devm_snd_soc_register_card(dev, card); + if (ret < 0) { + dev_err_probe(dev, ret, "snd_soc_register_card() failed\n"); + goto err_put_clk_i2s; + } + + of_node_put(cpu_dai); + of_node_put(codec); + return 0; + +err_put_clk_i2s: + clk_put(priv->clk_i2s_bus); +err_put_sclk: + clk_put(priv->sclk_i2s); +err_put_cpu_dai: + of_node_put(cpu_dai); + snd_soc_of_put_dai_link_codecs(codec_link); +err_put_node: + of_node_put(codec); + return ret; +} + +static void odroid_audio_remove(struct platform_device *pdev) +{ + struct odroid_priv *priv = platform_get_drvdata(pdev); + + snd_soc_of_put_dai_link_codecs(&priv->card.dai_link[1]); + clk_put(priv->sclk_i2s); + clk_put(priv->clk_i2s_bus); +} + +static const struct of_device_id odroid_audio_of_match[] = { + { .compatible = "hardkernel,odroid-xu3-audio" }, + { .compatible = "hardkernel,odroid-xu4-audio" }, + { .compatible = "samsung,odroid-xu3-audio" }, + { .compatible = "samsung,odroid-xu4-audio" }, + { }, +}; +MODULE_DEVICE_TABLE(of, odroid_audio_of_match); + +static struct platform_driver odroid_audio_driver = { + .driver = { + .name = "odroid-audio", + .of_match_table = odroid_audio_of_match, + .pm = &snd_soc_pm_ops, + }, + .probe = odroid_audio_probe, + .remove_new = odroid_audio_remove, +}; +module_platform_driver(odroid_audio_driver); + +MODULE_AUTHOR("Sylwester Nawrocki "); +MODULE_DESCRIPTION("Odroid XU3/XU4 audio support"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3