1 // SPDX-License-Identifier: GPL-2.0+ 2 // 3 // Tobermory audio support 4 // 5 // Copyright 2011 Wolfson Microelectronics 6 7 #include <sound/soc.h> 8 #include <sound/soc-dapm.h> 9 #include <sound/jack.h> 10 #include <linux/module.h> 11 12 #include "../codecs/wm8962.h" 13 14 static int sample_rate = 44100; 15 16 static int tobermory_set_bias_level(struct snd_soc_card *card, 17 struct snd_soc_dapm_context *dapm, 18 enum snd_soc_bias_level level) 19 { 20 struct snd_soc_pcm_runtime *rtd; 21 struct snd_soc_dai *codec_dai; 22 int ret; 23 24 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); 25 codec_dai = snd_soc_rtd_to_codec(rtd, 0); 26 27 if (dapm->dev != codec_dai->dev) 28 return 0; 29 30 switch (level) { 31 case SND_SOC_BIAS_PREPARE: 32 if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { 33 ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, 34 WM8962_FLL_MCLK, 32768, 35 sample_rate * 512); 36 if (ret < 0) 37 pr_err("Failed to start FLL: %d\n", ret); 38 39 ret = snd_soc_dai_set_sysclk(codec_dai, 40 WM8962_SYSCLK_FLL, 41 sample_rate * 512, 42 SND_SOC_CLOCK_IN); 43 if (ret < 0) { 44 pr_err("Failed to set SYSCLK: %d\n", ret); 45 snd_soc_dai_set_pll(codec_dai, WM8962_FLL, 46 0, 0, 0); 47 return ret; 48 } 49 } 50 break; 51 52 default: 53 break; 54 } 55 56 return 0; 57 } 58 59 static int tobermory_set_bias_level_post(struct snd_soc_card *card, 60 struct snd_soc_dapm_context *dapm, 61 enum snd_soc_bias_level level) 62 { 63 struct snd_soc_pcm_runtime *rtd; 64 struct snd_soc_dai *codec_dai; 65 int ret; 66 67 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); 68 codec_dai = snd_soc_rtd_to_codec(rtd, 0); 69 70 if (dapm->dev != codec_dai->dev) 71 return 0; 72 73 switch (level) { 74 case SND_SOC_BIAS_STANDBY: 75 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, 76 32768, SND_SOC_CLOCK_IN); 77 if (ret < 0) { 78 pr_err("Failed to switch away from FLL: %d\n", ret); 79 return ret; 80 } 81 82 ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, 83 0, 0, 0); 84 if (ret < 0) { 85 pr_err("Failed to stop FLL: %d\n", ret); 86 return ret; 87 } 88 break; 89 90 default: 91 break; 92 } 93 94 return 0; 95 } 96 97 static int tobermory_hw_params(struct snd_pcm_substream *substream, 98 struct snd_pcm_hw_params *params) 99 { 100 sample_rate = params_rate(params); 101 102 return 0; 103 } 104 105 static const struct snd_soc_ops tobermory_ops = { 106 .hw_params = tobermory_hw_params, 107 }; 108 109 SND_SOC_DAILINK_DEFS(cpu, 110 DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")), 111 DAILINK_COMP_ARRAY(COMP_CODEC("wm8962.1-001a", "wm8962")), 112 DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0"))); 113 114 static struct snd_soc_dai_link tobermory_dai[] = { 115 { 116 .name = "CPU", 117 .stream_name = "CPU", 118 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF 119 | SND_SOC_DAIFMT_CBP_CFP, 120 .ops = &tobermory_ops, 121 SND_SOC_DAILINK_REG(cpu), 122 }, 123 }; 124 125 static const struct snd_kcontrol_new controls[] = { 126 SOC_DAPM_PIN_SWITCH("Main Speaker"), 127 SOC_DAPM_PIN_SWITCH("DMIC"), 128 }; 129 130 static const struct snd_soc_dapm_widget widgets[] = { 131 SND_SOC_DAPM_HP("Headphone", NULL), 132 SND_SOC_DAPM_MIC("Headset Mic", NULL), 133 134 SND_SOC_DAPM_MIC("DMIC", NULL), 135 SND_SOC_DAPM_MIC("AMIC", NULL), 136 137 SND_SOC_DAPM_SPK("Main Speaker", NULL), 138 }; 139 140 static const struct snd_soc_dapm_route audio_paths[] = { 141 { "Headphone", NULL, "HPOUTL" }, 142 { "Headphone", NULL, "HPOUTR" }, 143 144 { "Main Speaker", NULL, "SPKOUTL" }, 145 { "Main Speaker", NULL, "SPKOUTR" }, 146 147 { "Headset Mic", NULL, "MICBIAS" }, 148 { "IN4L", NULL, "Headset Mic" }, 149 { "IN4R", NULL, "Headset Mic" }, 150 151 { "AMIC", NULL, "MICBIAS" }, 152 { "IN1L", NULL, "AMIC" }, 153 { "IN1R", NULL, "AMIC" }, 154 155 { "DMIC", NULL, "MICBIAS" }, 156 { "DMICDAT", NULL, "DMIC" }, 157 }; 158 159 static struct snd_soc_jack tobermory_headset; 160 161 /* Headset jack detection DAPM pins */ 162 static struct snd_soc_jack_pin tobermory_headset_pins[] = { 163 { 164 .pin = "Headset Mic", 165 .mask = SND_JACK_MICROPHONE, 166 }, 167 { 168 .pin = "Headphone", 169 .mask = SND_JACK_MICROPHONE, 170 }, 171 }; 172 173 static int tobermory_late_probe(struct snd_soc_card *card) 174 { 175 struct snd_soc_pcm_runtime *rtd; 176 struct snd_soc_component *component; 177 struct snd_soc_dai *codec_dai; 178 int ret; 179 180 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); 181 component = snd_soc_rtd_to_codec(rtd, 0)->component; 182 codec_dai = snd_soc_rtd_to_codec(rtd, 0); 183 184 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, 185 32768, SND_SOC_CLOCK_IN); 186 if (ret < 0) 187 return ret; 188 189 ret = snd_soc_card_jack_new_pins(card, "Headset", SND_JACK_HEADSET | 190 SND_JACK_BTN_0, &tobermory_headset, 191 tobermory_headset_pins, 192 ARRAY_SIZE(tobermory_headset_pins)); 193 if (ret) 194 return ret; 195 196 wm8962_mic_detect(component, &tobermory_headset); 197 198 return 0; 199 } 200 201 static struct snd_soc_card tobermory = { 202 .name = "Tobermory", 203 .owner = THIS_MODULE, 204 .dai_link = tobermory_dai, 205 .num_links = ARRAY_SIZE(tobermory_dai), 206 207 .set_bias_level = tobermory_set_bias_level, 208 .set_bias_level_post = tobermory_set_bias_level_post, 209 210 .controls = controls, 211 .num_controls = ARRAY_SIZE(controls), 212 .dapm_widgets = widgets, 213 .num_dapm_widgets = ARRAY_SIZE(widgets), 214 .dapm_routes = audio_paths, 215 .num_dapm_routes = ARRAY_SIZE(audio_paths), 216 .fully_routed = true, 217 218 .late_probe = tobermory_late_probe, 219 }; 220 221 static int tobermory_probe(struct platform_device *pdev) 222 { 223 struct snd_soc_card *card = &tobermory; 224 int ret; 225 226 card->dev = &pdev->dev; 227 228 ret = devm_snd_soc_register_card(&pdev->dev, card); 229 if (ret) 230 dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n"); 231 232 return ret; 233 } 234 235 static struct platform_driver tobermory_driver = { 236 .driver = { 237 .name = "tobermory", 238 .pm = &snd_soc_pm_ops, 239 }, 240 .probe = tobermory_probe, 241 }; 242 243 module_platform_driver(tobermory_driver); 244 245 MODULE_DESCRIPTION("Tobermory audio support"); 246 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 247 MODULE_LICENSE("GPL"); 248 MODULE_ALIAS("platform:tobermory"); 249