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 = asoc_substream_to_rtd(substream); 28 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 29 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 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 const struct snd_soc_ops mt2701_wm8960_be_ops = { 44 .hw_params = mt2701_wm8960_be_ops_hw_params 45 }; 46 47 SND_SOC_DAILINK_DEFS(playback, 48 DAILINK_COMP_ARRAY(COMP_CPU("PCMO0")), 49 DAILINK_COMP_ARRAY(COMP_DUMMY()), 50 DAILINK_COMP_ARRAY(COMP_EMPTY())); 51 52 SND_SOC_DAILINK_DEFS(capture, 53 DAILINK_COMP_ARRAY(COMP_CPU("PCM0")), 54 DAILINK_COMP_ARRAY(COMP_DUMMY()), 55 DAILINK_COMP_ARRAY(COMP_EMPTY())); 56 57 SND_SOC_DAILINK_DEFS(codec, 58 DAILINK_COMP_ARRAY(COMP_CPU("I2S0")), 59 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8960-hifi")), 60 DAILINK_COMP_ARRAY(COMP_EMPTY())); 61 62 static struct snd_soc_dai_link mt2701_wm8960_dai_links[] = { 63 /* FE */ 64 { 65 .name = "wm8960-playback", 66 .stream_name = "wm8960-playback", 67 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 68 SND_SOC_DPCM_TRIGGER_POST}, 69 .dynamic = 1, 70 .dpcm_playback = 1, 71 SND_SOC_DAILINK_REG(playback), 72 }, 73 { 74 .name = "wm8960-capture", 75 .stream_name = "wm8960-capture", 76 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 77 SND_SOC_DPCM_TRIGGER_POST}, 78 .dynamic = 1, 79 .dpcm_capture = 1, 80 SND_SOC_DAILINK_REG(capture), 81 }, 82 /* BE */ 83 { 84 .name = "wm8960-codec", 85 .no_pcm = 1, 86 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS 87 | SND_SOC_DAIFMT_GATED, 88 .ops = &mt2701_wm8960_be_ops, 89 .dpcm_playback = 1, 90 .dpcm_capture = 1, 91 SND_SOC_DAILINK_REG(codec), 92 }, 93 }; 94 95 static struct snd_soc_card mt2701_wm8960_card = { 96 .name = "mt2701-wm8960", 97 .owner = THIS_MODULE, 98 .dai_link = mt2701_wm8960_dai_links, 99 .num_links = ARRAY_SIZE(mt2701_wm8960_dai_links), 100 .controls = mt2701_wm8960_controls, 101 .num_controls = ARRAY_SIZE(mt2701_wm8960_controls), 102 .dapm_widgets = mt2701_wm8960_widgets, 103 .num_dapm_widgets = ARRAY_SIZE(mt2701_wm8960_widgets), 104 }; 105 106 static int mt2701_wm8960_machine_probe(struct platform_device *pdev) 107 { 108 struct snd_soc_card *card = &mt2701_wm8960_card; 109 struct device_node *platform_node, *codec_node; 110 struct snd_soc_dai_link *dai_link; 111 int ret, i; 112 113 platform_node = of_parse_phandle(pdev->dev.of_node, 114 "mediatek,platform", 0); 115 if (!platform_node) { 116 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 117 return -EINVAL; 118 } 119 for_each_card_prelinks(card, i, dai_link) { 120 if (dai_link->platforms->name) 121 continue; 122 dai_link->platforms->of_node = platform_node; 123 } 124 125 card->dev = &pdev->dev; 126 127 codec_node = of_parse_phandle(pdev->dev.of_node, 128 "mediatek,audio-codec", 0); 129 if (!codec_node) { 130 dev_err(&pdev->dev, 131 "Property 'audio-codec' missing or invalid\n"); 132 ret = -EINVAL; 133 goto put_platform_node; 134 } 135 for_each_card_prelinks(card, i, dai_link) { 136 if (dai_link->codecs->name) 137 continue; 138 dai_link->codecs->of_node = codec_node; 139 } 140 141 ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); 142 if (ret) { 143 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret); 144 goto put_codec_node; 145 } 146 147 ret = devm_snd_soc_register_card(&pdev->dev, card); 148 if (ret) 149 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", 150 __func__, ret); 151 152 put_codec_node: 153 of_node_put(codec_node); 154 put_platform_node: 155 of_node_put(platform_node); 156 return ret; 157 } 158 159 #ifdef CONFIG_OF 160 static const struct of_device_id mt2701_wm8960_machine_dt_match[] = { 161 {.compatible = "mediatek,mt2701-wm8960-machine",}, 162 {} 163 }; 164 #endif 165 166 static struct platform_driver mt2701_wm8960_machine = { 167 .driver = { 168 .name = "mt2701-wm8960", 169 #ifdef CONFIG_OF 170 .of_match_table = mt2701_wm8960_machine_dt_match, 171 #endif 172 }, 173 .probe = mt2701_wm8960_machine_probe, 174 }; 175 176 module_platform_driver(mt2701_wm8960_machine); 177 178 /* Module information */ 179 MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver"); 180 MODULE_AUTHOR("Ryder Lee <ryder.lee@mediatek.com>"); 181 MODULE_LICENSE("GPL v2"); 182 MODULE_ALIAS("mt2701 wm8960 soc card"); 183 184