summaryrefslogtreecommitdiffstats
path: root/sound/soc/mediatek/mt2701/mt2701-wm8960.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/mediatek/mt2701/mt2701-wm8960.c')
-rw-r--r--sound/soc/mediatek/mt2701/mt2701-wm8960.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/sound/soc/mediatek/mt2701/mt2701-wm8960.c b/sound/soc/mediatek/mt2701/mt2701-wm8960.c
new file mode 100644
index 000000000000..a08ce2323bdc
--- /dev/null
+++ b/sound/soc/mediatek/mt2701/mt2701-wm8960.c
@@ -0,0 +1,176 @@
+/*
+ * mt2701-wm8960.c -- MT2701 WM8960 ALSA SoC machine driver
+ *
+ * Copyright (c) 2017 MediaTek Inc.
+ * Author: Ryder Lee <ryder.lee@mediatek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <sound/soc.h>
+
+#include "mt2701-afe-common.h"
+
+static const struct snd_soc_dapm_widget mt2701_wm8960_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone", NULL),
+ SND_SOC_DAPM_MIC("AMIC", NULL),
+};
+
+static const struct snd_kcontrol_new mt2701_wm8960_controls[] = {
+ SOC_DAPM_PIN_SWITCH("Headphone"),
+ SOC_DAPM_PIN_SWITCH("AMIC"),
+};
+
+static int mt2701_wm8960_be_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 mt2701_wm8960_be_ops = {
+ .hw_params = mt2701_wm8960_be_ops_hw_params
+};
+
+static struct snd_soc_dai_link mt2701_wm8960_dai_links[] = {
+ /* FE */
+ {
+ .name = "wm8960-playback",
+ .stream_name = "wm8960-playback",
+ .cpu_dai_name = "PCMO0",
+ .codec_name = "snd-soc-dummy",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .trigger = {SND_SOC_DPCM_TRIGGER_POST,
+ SND_SOC_DPCM_TRIGGER_POST},
+ .dynamic = 1,
+ .dpcm_playback = 1,
+ },
+ {
+ .name = "wm8960-capture",
+ .stream_name = "wm8960-capture",
+ .cpu_dai_name = "PCM0",
+ .codec_name = "snd-soc-dummy",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .trigger = {SND_SOC_DPCM_TRIGGER_POST,
+ SND_SOC_DPCM_TRIGGER_POST},
+ .dynamic = 1,
+ .dpcm_capture = 1,
+ },
+ /* BE */
+ {
+ .name = "wm8960-codec",
+ .cpu_dai_name = "I2S0",
+ .no_pcm = 1,
+ .codec_dai_name = "wm8960-hifi",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
+ | SND_SOC_DAIFMT_GATED,
+ .ops = &mt2701_wm8960_be_ops,
+ .dpcm_playback = 1,
+ .dpcm_capture = 1,
+ },
+};
+
+static struct snd_soc_card mt2701_wm8960_card = {
+ .name = "mt2701-wm8960",
+ .owner = THIS_MODULE,
+ .dai_link = mt2701_wm8960_dai_links,
+ .num_links = ARRAY_SIZE(mt2701_wm8960_dai_links),
+ .controls = mt2701_wm8960_controls,
+ .num_controls = ARRAY_SIZE(mt2701_wm8960_controls),
+ .dapm_widgets = mt2701_wm8960_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(mt2701_wm8960_widgets),
+};
+
+static int mt2701_wm8960_machine_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &mt2701_wm8960_card;
+ struct device_node *platform_node, *codec_node;
+ 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;
+ }
+ for (i = 0; i < card->num_links; i++) {
+ if (mt2701_wm8960_dai_links[i].platform_name)
+ continue;
+ mt2701_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;
+ }
+ for (i = 0; i < card->num_links; i++) {
+ if (mt2701_wm8960_dai_links[i].codec_name)
+ continue;
+ mt2701_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 mt2701_wm8960_machine_dt_match[] = {
+ {.compatible = "mediatek,mt2701-wm8960-machine",},
+ {}
+};
+#endif
+
+static struct platform_driver mt2701_wm8960_machine = {
+ .driver = {
+ .name = "mt2701-wm8960",
+ .owner = THIS_MODULE,
+#ifdef CONFIG_OF
+ .of_match_table = mt2701_wm8960_machine_dt_match,
+#endif
+ },
+ .probe = mt2701_wm8960_machine_probe,
+};
+
+module_platform_driver(mt2701_wm8960_machine);
+
+/* Module information */
+MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver");
+MODULE_AUTHOR("Ryder Lee <ryder.lee@mediatek.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("mt2701 wm8960 soc card");
+