diff options
Diffstat (limited to 'sound/soc/mediatek/mt2701/mt2701-wm8960.c')
| -rw-r--r-- | sound/soc/mediatek/mt2701/mt2701-wm8960.c | 176 |
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"); + |