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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /sound/soc/tegra/tegra_wm8903.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/soc/tegra/tegra_wm8903.c')
-rw-r--r--sound/soc/tegra/tegra_wm8903.c188
1 files changed, 188 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra_wm8903.c b/sound/soc/tegra/tegra_wm8903.c
new file mode 100644
index 000000000..b3cd0a34d
--- /dev/null
+++ b/sound/soc/tegra/tegra_wm8903.c
@@ -0,0 +1,188 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010-2012 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ *
+ * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
+ *
+ * Copyright 2007 Wolfson Microelectronics PLC.
+ * Author: Graeme Gregory
+ * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
+ */
+
+#include <linux/gpio/consumer.h>
+#include <linux/of.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/soc.h>
+
+#include "../codecs/wm8903.h"
+
+#include "tegra_asoc_machine.h"
+
+static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
+ { .pin = "Mic Jack", .mask = SND_JACK_MICROPHONE },
+};
+
+static unsigned int tegra_wm8903_mclk_rate(unsigned int srate)
+{
+ unsigned int mclk;
+
+ switch (srate) {
+ case 64000:
+ case 88200:
+ case 96000:
+ mclk = 128 * srate;
+ break;
+ default:
+ mclk = 256 * srate;
+ break;
+ }
+ /* FIXME: Codec only requires >= 3MHz if OSR==0 */
+ while (mclk < 6000000)
+ mclk *= 2;
+
+ return mclk;
+}
+
+static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct tegra_machine *machine = snd_soc_card_get_drvdata(rtd->card);
+ struct snd_soc_card *card = rtd->card;
+ int err;
+
+ /*
+ * Older version of machine driver was ignoring GPIO polarity,
+ * forcing it to active-low. This means that all older device-trees
+ * which set the polarity to active-high are wrong and we need to fix
+ * them up.
+ */
+ if (machine->asoc->hp_jack_gpio_active_low) {
+ bool active_low = gpiod_is_active_low(machine->gpiod_hp_det);
+
+ machine->hp_jack_gpio->invert = !active_low;
+ }
+
+ err = tegra_asoc_machine_init(rtd);
+ if (err)
+ return err;
+
+ if (!machine->gpiod_mic_det && machine->asoc->add_mic_jack) {
+ struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+ struct snd_soc_component *component = codec_dai->component;
+ int shrt = 0;
+
+ err = snd_soc_card_jack_new_pins(rtd->card, "Mic Jack",
+ SND_JACK_MICROPHONE,
+ machine->mic_jack,
+ tegra_wm8903_mic_jack_pins,
+ ARRAY_SIZE(tegra_wm8903_mic_jack_pins));
+ if (err) {
+ dev_err(rtd->dev, "Mic Jack creation failed: %d\n", err);
+ return err;
+ }
+
+ if (of_property_read_bool(card->dev->of_node, "nvidia,headset"))
+ shrt = SND_JACK_MICROPHONE;
+
+ wm8903_mic_detect(component, machine->mic_jack,
+ SND_JACK_MICROPHONE, shrt);
+ }
+
+ snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS");
+
+ return 0;
+}
+
+static int tegra_wm8903_remove(struct snd_soc_card *card)
+{
+ struct snd_soc_dai_link *link = &card->dai_link[0];
+ struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card, link);
+ struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+ struct snd_soc_component *component = codec_dai->component;
+
+ wm8903_mic_detect(component, NULL, 0, 0);
+
+ return 0;
+}
+
+SND_SOC_DAILINK_DEFS(hifi,
+ DAILINK_COMP_ARRAY(COMP_EMPTY()),
+ DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8903-hifi")),
+ DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+static struct snd_soc_dai_link tegra_wm8903_dai = {
+ .name = "WM8903",
+ .stream_name = "WM8903 PCM",
+ .init = tegra_wm8903_init,
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ SND_SOC_DAILINK_REG(hifi),
+};
+
+static struct snd_soc_card snd_soc_tegra_wm8903 = {
+ .components = "codec:wm8903",
+ .owner = THIS_MODULE,
+ .dai_link = &tegra_wm8903_dai,
+ .num_links = 1,
+ .remove = tegra_wm8903_remove,
+ .fully_routed = true,
+};
+
+/* older device-trees used wrong polarity for the headphones-detection GPIO */
+static const struct tegra_asoc_data tegra_wm8903_data_legacy = {
+ .mclk_rate = tegra_wm8903_mclk_rate,
+ .card = &snd_soc_tegra_wm8903,
+ .hp_jack_gpio_active_low = true,
+ .add_common_dapm_widgets = true,
+ .add_common_controls = true,
+ .add_common_snd_ops = true,
+ .add_mic_jack = true,
+ .add_hp_jack = true,
+};
+
+static const struct tegra_asoc_data tegra_wm8903_data = {
+ .mclk_rate = tegra_wm8903_mclk_rate,
+ .card = &snd_soc_tegra_wm8903,
+ .add_common_dapm_widgets = true,
+ .add_common_controls = true,
+ .add_common_snd_ops = true,
+ .add_mic_jack = true,
+ .add_hp_jack = true,
+};
+
+static const struct of_device_id tegra_wm8903_of_match[] = {
+ { .compatible = "ad,tegra-audio-plutux", .data = &tegra_wm8903_data_legacy },
+ { .compatible = "ad,tegra-audio-wm8903-medcom-wide", .data = &tegra_wm8903_data_legacy },
+ { .compatible = "ad,tegra-audio-wm8903-tec", .data = &tegra_wm8903_data_legacy },
+ { .compatible = "nvidia,tegra-audio-wm8903-cardhu", .data = &tegra_wm8903_data_legacy },
+ { .compatible = "nvidia,tegra-audio-wm8903-harmony", .data = &tegra_wm8903_data_legacy },
+ { .compatible = "nvidia,tegra-audio-wm8903-picasso", .data = &tegra_wm8903_data_legacy },
+ { .compatible = "nvidia,tegra-audio-wm8903-seaboard", .data = &tegra_wm8903_data_legacy },
+ { .compatible = "nvidia,tegra-audio-wm8903-ventana", .data = &tegra_wm8903_data_legacy },
+ { .compatible = "nvidia,tegra-audio-wm8903", .data = &tegra_wm8903_data },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);
+
+static struct platform_driver tegra_wm8903_driver = {
+ .driver = {
+ .name = "tegra-wm8903",
+ .of_match_table = tegra_wm8903_of_match,
+ .pm = &snd_soc_pm_ops,
+ },
+ .probe = tegra_asoc_machine_probe,
+};
+module_platform_driver(tegra_wm8903_driver);
+
+MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
+MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
+MODULE_LICENSE("GPL");