156 lines
4.5 KiB
Diff
156 lines
4.5 KiB
Diff
From eeea8551715444ef204e51c04ccc4e65fdf78798 Mon Sep 17 00:00:00 2001
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From: Samuel Holland <samuel@sholland.org>
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Date: Fri, 25 Sep 2020 21:42:52 -0500
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Subject: [PATCH 323/351] ASoC: ec25: New codec driver for the EC25 modem
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The EC25 LTE modem has a PCM interface, and supports 16-bit PCM audio at
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an 8 kHz or 16 kHz sameple rate.
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Suggested-by: Luca Weiss <luca@z3ntu.xyz>
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Signed-off-by: Samuel Holland <samuel@sholland.org>
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---
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sound/soc/codecs/Kconfig | 3 ++
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sound/soc/codecs/Makefile | 2 +
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sound/soc/codecs/ec25.c | 95 +++++++++++++++++++++++++++++++++++++++
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3 files changed, 100 insertions(+)
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create mode 100644 sound/soc/codecs/ec25.c
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diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
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index 34c6dd04b85a..23a1a95f3721 100644
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--- a/sound/soc/codecs/Kconfig
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+++ b/sound/soc/codecs/Kconfig
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@@ -767,6 +767,9 @@ config SND_SOC_HDMI_CODEC
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select SND_PCM_IEC958
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select HDMI
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+config SND_SOC_EC25
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+ tristate "EC25 LTE module CODEC"
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+
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config SND_SOC_ES7134
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tristate "Everest Semi ES7134 CODEC"
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diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
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index 11ce98c25d6c..cfdeed716849 100644
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--- a/sound/soc/codecs/Makefile
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+++ b/sound/soc/codecs/Makefile
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@@ -84,6 +84,7 @@ snd-soc-da7219-objs := da7219.o da7219-aad.o
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snd-soc-da732x-objs := da732x.o
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snd-soc-da9055-objs := da9055.o
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snd-soc-dmic-objs := dmic.o
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+snd-soc-ec25-objs := ec25.o
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snd-soc-es7134-objs := es7134.o
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snd-soc-es7241-objs := es7241.o
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snd-soc-es8316-objs := es8316.o
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@@ -393,6 +394,7 @@ obj-$(CONFIG_SND_SOC_DA7219) += snd-soc-da7219.o
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obj-$(CONFIG_SND_SOC_DA732X) += snd-soc-da732x.o
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obj-$(CONFIG_SND_SOC_DA9055) += snd-soc-da9055.o
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obj-$(CONFIG_SND_SOC_DMIC) += snd-soc-dmic.o
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+obj-$(CONFIG_SND_SOC_EC25) += snd-soc-ec25.o
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obj-$(CONFIG_SND_SOC_ES7134) += snd-soc-es7134.o
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obj-$(CONFIG_SND_SOC_ES7241) += snd-soc-es7241.o
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obj-$(CONFIG_SND_SOC_ES8316) += snd-soc-es8316.o
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diff --git a/sound/soc/codecs/ec25.c b/sound/soc/codecs/ec25.c
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new file mode 100644
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index 000000000000..7c96aa7a79d0
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--- /dev/null
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+++ b/sound/soc/codecs/ec25.c
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@@ -0,0 +1,95 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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+
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+#include <linux/module.h>
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+#include <sound/soc.h>
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+
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+static const struct snd_soc_dapm_widget ec25_dapm_widgets[] = {
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+ SND_SOC_DAPM_OUTPUT("AOUT"),
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+ SND_SOC_DAPM_INPUT("AIN"),
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+};
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+
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+static const struct snd_soc_dapm_route ec25_dapm_routes[] = {
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+ { "AOUT", NULL, "Playback" },
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+ { "AOUT", NULL, "Wideband Playback" },
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+ { "Capture", NULL, "AIN" },
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+ { "Wideband Capture", NULL, "AIN" },
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+};
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+
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+static const struct snd_soc_component_driver ec25_component_driver = {
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+ .dapm_widgets = ec25_dapm_widgets,
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+ .num_dapm_widgets = ARRAY_SIZE(ec25_dapm_widgets),
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+ .dapm_routes = ec25_dapm_routes,
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+ .num_dapm_routes = ARRAY_SIZE(ec25_dapm_routes),
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+ .endianness = 1,
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+ .non_legacy_dai_naming = 1,
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+};
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+
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+static struct snd_soc_dai_driver ec25_dais[] = {
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+ {
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+ .name = "ec25",
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+ .capture = {
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+ .stream_name = "Capture",
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+ .channels_min = 1,
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+ .channels_max = 1,
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+ .rates = SNDRV_PCM_RATE_8000,
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+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
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+ },
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+ .playback = {
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+ .stream_name = "Playback",
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+ .channels_min = 1,
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+ .channels_max = 1,
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+ .rates = SNDRV_PCM_RATE_8000,
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+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
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+ },
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+ .symmetric_rates = 1,
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+ .symmetric_channels = 1,
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+ .symmetric_samplebits = 1,
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+ },
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+ {
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+ .name = "ec25-wb",
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+ .capture = {
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+ .stream_name = "Wideband Capture",
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+ .channels_min = 1,
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+ .channels_max = 1,
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+ .rates = SNDRV_PCM_RATE_16000,
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+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
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+ },
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+ .playback = {
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+ .stream_name = "Wideband Playback",
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+ .channels_min = 1,
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+ .channels_max = 1,
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+ .rates = SNDRV_PCM_RATE_16000,
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+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
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+ },
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+ .symmetric_rates = 1,
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+ .symmetric_channels = 1,
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+ .symmetric_samplebits = 1,
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+ },
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+};
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+
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+static int ec25_codec_probe(struct platform_device *pdev)
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+{
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+ return devm_snd_soc_register_component(&pdev->dev, &ec25_component_driver,
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+ ec25_dais, ARRAY_SIZE(ec25_dais));
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+}
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+
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+static const struct of_device_id ec25_codec_of_match[] = {
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+ { .compatible = "quectel,ec25", },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, ec25_codec_of_match);
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+
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+static struct platform_driver ec25_codec_driver = {
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+ .driver = {
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+ .name = "ec25",
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+ .of_match_table = of_match_ptr(ec25_codec_of_match),
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+ },
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+ .probe = ec25_codec_probe,
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+};
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+
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+module_platform_driver(ec25_codec_driver);
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+
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+MODULE_DESCRIPTION("ASoC ec25 driver");
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+MODULE_AUTHOR("Samuel Holland <samuel@sholland.org>");
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+MODULE_LICENSE("GPL");
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+MODULE_ALIAS("platform:ec25");
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--
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2.34.0
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