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ramips: add wm8960 asoc sound driver for mt762x
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@coolsnowwolf
coolsnowwolf committed Sep 27, 2019
1 parent 0a23772 commit 65b25ce
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Showing 2 changed files with 194 additions and 2 deletions.
15 changes: 15 additions & 0 deletions target/linux/ramips/modules.mk
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Original file line number Diff line number Diff line change
Expand Up @@ -136,3 +136,18 @@ define KernelPackage/sound-mt7620/description
endef

$(eval $(call KernelPackage,sound-mt7620))

define KernelPackage/sound-mt76x8-wm8960
TITLE:=MT76x8 WM8960 ALSA SoC Machine Driver
DEPENDS:=@TARGET_ramips +kmod-sound-mt7620 +kmod-i2c-mt7628 @!TARGET_ramips_rt288x
KCONFIG:=CONFIG_SND_SOC_MT76X8_WM8960
FILES:=$(LINUX_DIR)/sound/soc/ralink/snd-soc-mt76x8-wm8960.ko
AUTOLOAD:=$(call AutoLoad,91,snd-soc-mt76x8-wm8960)
$(call AddDepends/sound)
endef

define KernelPackage/sound-mt76x8-wm8960/description
ASoC Audio driver for Ralink SoC with WM8960 codec.
endef

$(eval $(call KernelPackage,sound-mt76x8-wm8960))
181 changes: 179 additions & 2 deletions target/linux/ramips/patches-4.14/0048-asoc-add-mt7620-support.patch
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Original file line number Diff line number Diff line change
Expand Up @@ -58,7 +58,7 @@ Signed-off-by: John Crispin <[email protected]>
obj-$(CONFIG_SND_SOC) += sirf/
--- /dev/null
+++ b/sound/soc/ralink/Kconfig
@@ -0,0 +1,8 @@
@@ -0,0 +1,15 @@
+config SND_RALINK_SOC_I2S
+ depends on RALINK && SND_SOC && !SOC_RT288X
+ select SND_SOC_GENERIC_DMAENGINE_PCM
Expand All @@ -67,15 +67,26 @@ Signed-off-by: John Crispin <[email protected]>
+ help
+ Say Y if you want to use I2S protocol and I2S codec on Ralink/MediaTek
+ based boards.
+
+config SND_SOC_MT76X8_WM8960
+ tristate "ASoC Audio driver for Ralink SoC with WM8960 codec"
+ depends on SND_RALINK_SOC_I2S && I2C
+ select SND_SOC_WM8960
+ help
+ Say Y if you want to use WM8960 codec on Ralink/MediaTek based boards.
--- /dev/null
+++ b/sound/soc/ralink/Makefile
@@ -0,0 +1,6 @@
@@ -0,0 +1,10 @@
+#
+# Ralink/MediaTek Platform Support
+#
+snd-soc-ralink-i2s-objs := ralink-i2s.o
+
+obj-$(CONFIG_SND_RALINK_SOC_I2S) += snd-soc-ralink-i2s.o
+
+snd-soc-mt76x8-wm8960-objs := mt76x8-wm8960.o
+
+obj-$(CONFIG_SND_SOC_MT76X8_WM8960) += snd-soc-mt76x8-wm8960.o
--- /dev/null
+++ b/sound/soc/ralink/ralink-i2s.c
@@ -0,0 +1,965 @@
Expand Down Expand Up @@ -1044,3 +1055,169 @@ Signed-off-by: John Crispin <[email protected]>
+MODULE_DESCRIPTION("Ralink/MediaTek I2S driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
--- /dev/null
+++ b/sound/soc/ralink/mt76x8-wm8960.c
@@ -0,0 +1,163 @@
+/*
+ * mt76x8-wm8960.c -- MT76x8 WM8960 ALSA SoC machine driver
+ *
+ * Copyright 2018 Jack Chen <[email protected]>
+ *
+ * Based on mt2701-wm8960.c
+ * Copyright (c) 2017 MediaTek Inc.
+ * Author: Ryder Lee <[email protected]>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+#include <sound/soc-dapm.h>
+#include <linux/pinctrl/consumer.h>
+
+#include "../codecs/wm8960.h"
+
+static const struct snd_soc_dapm_widget mt76x8_wm8960_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone", NULL),
+ SND_SOC_DAPM_SPK("Ext Spk", NULL),
+ SND_SOC_DAPM_LINE("Line In", NULL),
+ SND_SOC_DAPM_MIC("Mic", NULL),
+};
+
+static int mt76x8_wm8960_ops_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_dai *cpu_dai = rtd->cpu_dai;
+ unsigned int mclk_rate;
+ unsigned int rate = params_rate(params);
+ unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4;
+ unsigned int div_bck_over_lrck = 64;
+
+ mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck;
+
+ snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT);
+ snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN);
+
+ return 0;
+}
+
+static struct snd_soc_ops mt76x8_wm8960_ops = {
+ .hw_params = mt76x8_wm8960_ops_hw_params,
+};
+
+static struct snd_soc_dai_link mt76x8_wm8960_dai_links[] = {
+ {
+ .name = "wm8960-codec",
+ .stream_name = "wm8960-hifi",
+ .cpu_dai_name = "ralink-i2s",
+ .codec_dai_name = "wm8960-hifi",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &mt76x8_wm8960_ops,
+ .dpcm_playback = 1,
+ .dpcm_capture = 1,
+ },
+};
+
+static struct snd_soc_card mt76x8_wm8960_card = {
+ .name = "MT76x8 WM8960 ASoC Card",
+ .owner = THIS_MODULE,
+ .dai_link = mt76x8_wm8960_dai_links,
+ .num_links = ARRAY_SIZE(mt76x8_wm8960_dai_links),
+ .dapm_widgets = mt76x8_wm8960_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(mt76x8_wm8960_dapm_widgets),
+};
+
+static int mt76x8_wm8960_machine_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &mt76x8_wm8960_card;
+ struct device_node *platform_node, *codec_node;
+ struct platform_device *platform_dev;
+ struct i2c_client *codec_dev;
+ int ret, i;
+
+ platform_node = of_parse_phandle(pdev->dev.of_node, "mediatek,platform", 0);
+ if (!platform_node) {
+ dev_err(&pdev->dev, "property 'platform' missing or invalid\n");
+ return -EINVAL;
+ }
+ platform_dev = of_find_device_by_node(platform_node);
+ if (!platform_dev) {
+ dev_err(&pdev->dev, "failed to find platform device\n");
+ return -EINVAL;
+ }
+ for (i=0; i<card->num_links; i++) {
+ if (mt76x8_wm8960_dai_links[i].platform_name) {
+ continue;
+ }
+ mt76x8_wm8960_dai_links[i].platform_of_node = platform_node;
+ }
+
+ card->dev = &pdev->dev;
+
+ codec_node = of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 0);
+ if (!codec_node) {
+ dev_err(&pdev->dev, "property 'audio-codec' missing or invalid\n");
+ return -EINVAL;
+ }
+ codec_dev = of_find_i2c_device_by_node(codec_node);
+ if (!codec_dev || !codec_dev->dev.driver) {
+ dev_err(&pdev->dev, "failed to find audio codec device\n");
+ return -EINVAL;
+ }
+ for (i=0; i<card->num_links; i++) {
+ if (mt76x8_wm8960_dai_links[i].codec_name) {
+ continue;
+ }
+ mt76x8_wm8960_dai_links[i].codec_of_node = codec_node;
+ }
+
+ ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
+ if (ret) {
+ dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
+ return ret;
+ }
+
+ ret = devm_snd_soc_register_card(&pdev->dev, card);
+ if (ret) {
+ dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", __func__, ret);
+ }
+
+ return ret;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id mt76x8_wm8960_machine_dt_match[] = {
+ {.compatible = "mediatek,mt76x8-wm8960-machine"},
+ {}
+};
+#endif
+
+static struct platform_driver mt76x8_wm8960_machine = {
+ .driver = {
+ .name = "mt76x8-wm8960",
+ .owner = THIS_MODULE,
+#ifdef CONFIG_OF
+ .of_match_table = mt76x8_wm8960_machine_dt_match,
+#endif
+ },
+ .probe = mt76x8_wm8960_machine_probe,
+};
+
+module_platform_driver(mt76x8_wm8960_machine);
+
+/* Module information */
+MODULE_DESCRIPTION("MT76x8 WM8960 ALSA SoC machine driver");
+MODULE_AUTHOR("Jack Chen <[email protected]>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("MT76x8 WM8960 ASoC driver");

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