1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * mt2701-wm8960.c -- MT2701 WM8960 ALSA SoC machine driver 4 * 5 * Copyright (c) 2017 MediaTek Inc. 6 * Author: Ryder Lee <ryder.lee@mediatek.com> 7 */ 8 9 #include <linux/module.h> 10 #include <sound/soc.h> 11 12 #include "mt2701-afe-common.h" 13 14 static const struct snd_soc_dapm_widget mt2701_wm8960_widgets[] = { 15 SND_SOC_DAPM_HP("Headphone", NULL), 16 SND_SOC_DAPM_MIC("AMIC", NULL), 17 }; 18 19 static const struct snd_kcontrol_new mt2701_wm8960_controls[] = { 20 SOC_DAPM_PIN_SWITCH("Headphone"), 21 SOC_DAPM_PIN_SWITCH("AMIC"), 22 }; 23 24 static int mt2701_wm8960_be_ops_hw_params(struct snd_pcm_substream *substream, 25 struct snd_pcm_hw_params *params) 26 { 27 struct snd_soc_pcm_runtime *rtd = substream->private_data; 28 struct snd_soc_dai *codec_dai = rtd->codec_dai; 29 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 30 unsigned int mclk_rate; 31 unsigned int rate = params_rate(params); 32 unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4; 33 unsigned int div_bck_over_lrck = 64; 34 35 mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck; 36 37 snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT); 38 snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN); 39 40 return 0; 41 } 42 43 static struct snd_soc_ops mt2701_wm8960_be_ops = { 44 .hw_params = mt2701_wm8960_be_ops_hw_params 45 }; 46 47 static struct snd_soc_dai_link mt2701_wm8960_dai_links[] = { 48 /* FE */ 49 { 50 .name = "wm8960-playback", 51 .stream_name = "wm8960-playback", 52 .cpu_dai_name = "PCMO0", 53 .codec_name = "snd-soc-dummy", 54 .codec_dai_name = "snd-soc-dummy-dai", 55 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 56 SND_SOC_DPCM_TRIGGER_POST}, 57 .dynamic = 1, 58 .dpcm_playback = 1, 59 }, 60 { 61 .name = "wm8960-capture", 62 .stream_name = "wm8960-capture", 63 .cpu_dai_name = "PCM0", 64 .codec_name = "snd-soc-dummy", 65 .codec_dai_name = "snd-soc-dummy-dai", 66 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 67 SND_SOC_DPCM_TRIGGER_POST}, 68 .dynamic = 1, 69 .dpcm_capture = 1, 70 }, 71 /* BE */ 72 { 73 .name = "wm8960-codec", 74 .cpu_dai_name = "I2S0", 75 .no_pcm = 1, 76 .codec_dai_name = "wm8960-hifi", 77 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS 78 | SND_SOC_DAIFMT_GATED, 79 .ops = &mt2701_wm8960_be_ops, 80 .dpcm_playback = 1, 81 .dpcm_capture = 1, 82 }, 83 }; 84 85 static struct snd_soc_card mt2701_wm8960_card = { 86 .name = "mt2701-wm8960", 87 .owner = THIS_MODULE, 88 .dai_link = mt2701_wm8960_dai_links, 89 .num_links = ARRAY_SIZE(mt2701_wm8960_dai_links), 90 .controls = mt2701_wm8960_controls, 91 .num_controls = ARRAY_SIZE(mt2701_wm8960_controls), 92 .dapm_widgets = mt2701_wm8960_widgets, 93 .num_dapm_widgets = ARRAY_SIZE(mt2701_wm8960_widgets), 94 }; 95 96 static int mt2701_wm8960_machine_probe(struct platform_device *pdev) 97 { 98 struct snd_soc_card *card = &mt2701_wm8960_card; 99 struct device_node *platform_node, *codec_node; 100 int ret, i; 101 102 platform_node = of_parse_phandle(pdev->dev.of_node, 103 "mediatek,platform", 0); 104 if (!platform_node) { 105 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 106 return -EINVAL; 107 } 108 for (i = 0; i < card->num_links; i++) { 109 if (mt2701_wm8960_dai_links[i].platform_name) 110 continue; 111 mt2701_wm8960_dai_links[i].platform_of_node = platform_node; 112 } 113 114 card->dev = &pdev->dev; 115 116 codec_node = of_parse_phandle(pdev->dev.of_node, 117 "mediatek,audio-codec", 0); 118 if (!codec_node) { 119 dev_err(&pdev->dev, 120 "Property 'audio-codec' missing or invalid\n"); 121 return -EINVAL; 122 } 123 for (i = 0; i < card->num_links; i++) { 124 if (mt2701_wm8960_dai_links[i].codec_name) 125 continue; 126 mt2701_wm8960_dai_links[i].codec_of_node = codec_node; 127 } 128 129 ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); 130 if (ret) { 131 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret); 132 return ret; 133 } 134 135 ret = devm_snd_soc_register_card(&pdev->dev, card); 136 if (ret) 137 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", 138 __func__, ret); 139 140 return ret; 141 } 142 143 #ifdef CONFIG_OF 144 static const struct of_device_id mt2701_wm8960_machine_dt_match[] = { 145 {.compatible = "mediatek,mt2701-wm8960-machine",}, 146 {} 147 }; 148 #endif 149 150 static struct platform_driver mt2701_wm8960_machine = { 151 .driver = { 152 .name = "mt2701-wm8960", 153 .owner = THIS_MODULE, 154 #ifdef CONFIG_OF 155 .of_match_table = mt2701_wm8960_machine_dt_match, 156 #endif 157 }, 158 .probe = mt2701_wm8960_machine_probe, 159 }; 160 161 module_platform_driver(mt2701_wm8960_machine); 162 163 /* Module information */ 164 MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver"); 165 MODULE_AUTHOR("Ryder Lee <ryder.lee@mediatek.com>"); 166 MODULE_LICENSE("GPL v2"); 167 MODULE_ALIAS("mt2701 wm8960 soc card"); 168 169