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 dapm->bias_level = level; 95 96 return 0; 97 } 98 99 static int tobermory_hw_params(struct snd_pcm_substream *substream, 100 struct snd_pcm_hw_params *params) 101 { 102 sample_rate = params_rate(params); 103 104 return 0; 105 } 106 107 static const struct snd_soc_ops tobermory_ops = { 108 .hw_params = tobermory_hw_params, 109 }; 110 111 SND_SOC_DAILINK_DEFS(cpu, 112 DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")), 113 DAILINK_COMP_ARRAY(COMP_CODEC("wm8962.1-001a", "wm8962")), 114 DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0"))); 115 116 static struct snd_soc_dai_link tobermory_dai[] = { 117 { 118 .name = "CPU", 119 .stream_name = "CPU", 120 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF 121 | SND_SOC_DAIFMT_CBP_CFP, 122 .ops = &tobermory_ops, 123 SND_SOC_DAILINK_REG(cpu), 124 }, 125 }; 126 127 static const struct snd_kcontrol_new controls[] = { 128 SOC_DAPM_PIN_SWITCH("Main Speaker"), 129 SOC_DAPM_PIN_SWITCH("DMIC"), 130 }; 131 132 static const struct snd_soc_dapm_widget widgets[] = { 133 SND_SOC_DAPM_HP("Headphone", NULL), 134 SND_SOC_DAPM_MIC("Headset Mic", NULL), 135 136 SND_SOC_DAPM_MIC("DMIC", NULL), 137 SND_SOC_DAPM_MIC("AMIC", NULL), 138 139 SND_SOC_DAPM_SPK("Main Speaker", NULL), 140 }; 141 142 static const struct snd_soc_dapm_route audio_paths[] = { 143 { "Headphone", NULL, "HPOUTL" }, 144 { "Headphone", NULL, "HPOUTR" }, 145 146 { "Main Speaker", NULL, "SPKOUTL" }, 147 { "Main Speaker", NULL, "SPKOUTR" }, 148 149 { "Headset Mic", NULL, "MICBIAS" }, 150 { "IN4L", NULL, "Headset Mic" }, 151 { "IN4R", NULL, "Headset Mic" }, 152 153 { "AMIC", NULL, "MICBIAS" }, 154 { "IN1L", NULL, "AMIC" }, 155 { "IN1R", NULL, "AMIC" }, 156 157 { "DMIC", NULL, "MICBIAS" }, 158 { "DMICDAT", NULL, "DMIC" }, 159 }; 160 161 static struct snd_soc_jack tobermory_headset; 162 163 /* Headset jack detection DAPM pins */ 164 static struct snd_soc_jack_pin tobermory_headset_pins[] = { 165 { 166 .pin = "Headset Mic", 167 .mask = SND_JACK_MICROPHONE, 168 }, 169 { 170 .pin = "Headphone", 171 .mask = SND_JACK_MICROPHONE, 172 }, 173 }; 174 175 static int tobermory_late_probe(struct snd_soc_card *card) 176 { 177 struct snd_soc_pcm_runtime *rtd; 178 struct snd_soc_component *component; 179 struct snd_soc_dai *codec_dai; 180 int ret; 181 182 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); 183 component = snd_soc_rtd_to_codec(rtd, 0)->component; 184 codec_dai = snd_soc_rtd_to_codec(rtd, 0); 185 186 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, 187 32768, SND_SOC_CLOCK_IN); 188 if (ret < 0) 189 return ret; 190 191 ret = snd_soc_card_jack_new_pins(card, "Headset", SND_JACK_HEADSET | 192 SND_JACK_BTN_0, &tobermory_headset, 193 tobermory_headset_pins, 194 ARRAY_SIZE(tobermory_headset_pins)); 195 if (ret) 196 return ret; 197 198 wm8962_mic_detect(component, &tobermory_headset); 199 200 return 0; 201 } 202 203 static struct snd_soc_card tobermory = { 204 .name = "Tobermory", 205 .owner = THIS_MODULE, 206 .dai_link = tobermory_dai, 207 .num_links = ARRAY_SIZE(tobermory_dai), 208 209 .set_bias_level = tobermory_set_bias_level, 210 .set_bias_level_post = tobermory_set_bias_level_post, 211 212 .controls = controls, 213 .num_controls = ARRAY_SIZE(controls), 214 .dapm_widgets = widgets, 215 .num_dapm_widgets = ARRAY_SIZE(widgets), 216 .dapm_routes = audio_paths, 217 .num_dapm_routes = ARRAY_SIZE(audio_paths), 218 .fully_routed = true, 219 220 .late_probe = tobermory_late_probe, 221 }; 222 223 static int tobermory_probe(struct platform_device *pdev) 224 { 225 struct snd_soc_card *card = &tobermory; 226 int ret; 227 228 card->dev = &pdev->dev; 229 230 ret = devm_snd_soc_register_card(&pdev->dev, card); 231 if (ret) 232 dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n"); 233 234 return ret; 235 } 236 237 static struct platform_driver tobermory_driver = { 238 .driver = { 239 .name = "tobermory", 240 .pm = &snd_soc_pm_ops, 241 }, 242 .probe = tobermory_probe, 243 }; 244 245 module_platform_driver(tobermory_driver); 246 247 MODULE_DESCRIPTION("Tobermory audio support"); 248 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 249 MODULE_LICENSE("GPL"); 250 MODULE_ALIAS("platform:tobermory"); 251