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/gpio.h> 11 #include <linux/module.h> 12 13 #include "../codecs/wm8962.h" 14 15 static int sample_rate = 44100; 16 17 static int tobermory_set_bias_level(struct snd_soc_card *card, 18 struct snd_soc_dapm_context *dapm, 19 enum snd_soc_bias_level level) 20 { 21 struct snd_soc_pcm_runtime *rtd; 22 struct snd_soc_dai *codec_dai; 23 int ret; 24 25 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); 26 codec_dai = asoc_rtd_to_codec(rtd, 0); 27 28 if (dapm->dev != codec_dai->dev) 29 return 0; 30 31 switch (level) { 32 case SND_SOC_BIAS_PREPARE: 33 if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { 34 ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, 35 WM8962_FLL_MCLK, 32768, 36 sample_rate * 512); 37 if (ret < 0) 38 pr_err("Failed to start FLL: %d\n", ret); 39 40 ret = snd_soc_dai_set_sysclk(codec_dai, 41 WM8962_SYSCLK_FLL, 42 sample_rate * 512, 43 SND_SOC_CLOCK_IN); 44 if (ret < 0) { 45 pr_err("Failed to set SYSCLK: %d\n", ret); 46 snd_soc_dai_set_pll(codec_dai, WM8962_FLL, 47 0, 0, 0); 48 return ret; 49 } 50 } 51 break; 52 53 default: 54 break; 55 } 56 57 return 0; 58 } 59 60 static int tobermory_set_bias_level_post(struct snd_soc_card *card, 61 struct snd_soc_dapm_context *dapm, 62 enum snd_soc_bias_level level) 63 { 64 struct snd_soc_pcm_runtime *rtd; 65 struct snd_soc_dai *codec_dai; 66 int ret; 67 68 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); 69 codec_dai = asoc_rtd_to_codec(rtd, 0); 70 71 if (dapm->dev != codec_dai->dev) 72 return 0; 73 74 switch (level) { 75 case SND_SOC_BIAS_STANDBY: 76 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, 77 32768, SND_SOC_CLOCK_IN); 78 if (ret < 0) { 79 pr_err("Failed to switch away from FLL: %d\n", ret); 80 return ret; 81 } 82 83 ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, 84 0, 0, 0); 85 if (ret < 0) { 86 pr_err("Failed to stop FLL: %d\n", ret); 87 return ret; 88 } 89 break; 90 91 default: 92 break; 93 } 94 95 dapm->bias_level = level; 96 97 return 0; 98 } 99 100 static int tobermory_hw_params(struct snd_pcm_substream *substream, 101 struct snd_pcm_hw_params *params) 102 { 103 sample_rate = params_rate(params); 104 105 return 0; 106 } 107 108 static const struct snd_soc_ops tobermory_ops = { 109 .hw_params = tobermory_hw_params, 110 }; 111 112 SND_SOC_DAILINK_DEFS(cpu, 113 DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")), 114 DAILINK_COMP_ARRAY(COMP_CODEC("wm8962.1-001a", "wm8962")), 115 DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0"))); 116 117 static struct snd_soc_dai_link tobermory_dai[] = { 118 { 119 .name = "CPU", 120 .stream_name = "CPU", 121 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF 122 | SND_SOC_DAIFMT_CBM_CFM, 123 .ops = &tobermory_ops, 124 SND_SOC_DAILINK_REG(cpu), 125 }, 126 }; 127 128 static const struct snd_kcontrol_new controls[] = { 129 SOC_DAPM_PIN_SWITCH("Main Speaker"), 130 SOC_DAPM_PIN_SWITCH("DMIC"), 131 }; 132 133 static struct snd_soc_dapm_widget widgets[] = { 134 SND_SOC_DAPM_HP("Headphone", NULL), 135 SND_SOC_DAPM_MIC("Headset Mic", NULL), 136 137 SND_SOC_DAPM_MIC("DMIC", NULL), 138 SND_SOC_DAPM_MIC("AMIC", NULL), 139 140 SND_SOC_DAPM_SPK("Main Speaker", NULL), 141 }; 142 143 static struct snd_soc_dapm_route audio_paths[] = { 144 { "Headphone", NULL, "HPOUTL" }, 145 { "Headphone", NULL, "HPOUTR" }, 146 147 { "Main Speaker", NULL, "SPKOUTL" }, 148 { "Main Speaker", NULL, "SPKOUTR" }, 149 150 { "Headset Mic", NULL, "MICBIAS" }, 151 { "IN4L", NULL, "Headset Mic" }, 152 { "IN4R", NULL, "Headset Mic" }, 153 154 { "AMIC", NULL, "MICBIAS" }, 155 { "IN1L", NULL, "AMIC" }, 156 { "IN1R", NULL, "AMIC" }, 157 158 { "DMIC", NULL, "MICBIAS" }, 159 { "DMICDAT", NULL, "DMIC" }, 160 }; 161 162 static struct snd_soc_jack tobermory_headset; 163 164 /* Headset jack detection DAPM pins */ 165 static struct snd_soc_jack_pin tobermory_headset_pins[] = { 166 { 167 .pin = "Headset Mic", 168 .mask = SND_JACK_MICROPHONE, 169 }, 170 { 171 .pin = "Headphone", 172 .mask = SND_JACK_MICROPHONE, 173 }, 174 }; 175 176 static int tobermory_late_probe(struct snd_soc_card *card) 177 { 178 struct snd_soc_pcm_runtime *rtd; 179 struct snd_soc_component *component; 180 struct snd_soc_dai *codec_dai; 181 int ret; 182 183 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); 184 component = asoc_rtd_to_codec(rtd, 0)->component; 185 codec_dai = asoc_rtd_to_codec(rtd, 0); 186 187 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, 188 32768, SND_SOC_CLOCK_IN); 189 if (ret < 0) 190 return ret; 191 192 ret = snd_soc_card_jack_new(card, "Headset", SND_JACK_HEADSET | 193 SND_JACK_BTN_0, &tobermory_headset, 194 tobermory_headset_pins, 195 ARRAY_SIZE(tobermory_headset_pins)); 196 if (ret) 197 return ret; 198 199 wm8962_mic_detect(component, &tobermory_headset); 200 201 return 0; 202 } 203 204 static struct snd_soc_card tobermory = { 205 .name = "Tobermory", 206 .owner = THIS_MODULE, 207 .dai_link = tobermory_dai, 208 .num_links = ARRAY_SIZE(tobermory_dai), 209 210 .set_bias_level = tobermory_set_bias_level, 211 .set_bias_level_post = tobermory_set_bias_level_post, 212 213 .controls = controls, 214 .num_controls = ARRAY_SIZE(controls), 215 .dapm_widgets = widgets, 216 .num_dapm_widgets = ARRAY_SIZE(widgets), 217 .dapm_routes = audio_paths, 218 .num_dapm_routes = ARRAY_SIZE(audio_paths), 219 .fully_routed = true, 220 221 .late_probe = tobermory_late_probe, 222 }; 223 224 static int tobermory_probe(struct platform_device *pdev) 225 { 226 struct snd_soc_card *card = &tobermory; 227 int ret; 228 229 card->dev = &pdev->dev; 230 231 ret = devm_snd_soc_register_card(&pdev->dev, card); 232 if (ret && ret != -EPROBE_DEFER) 233 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", 234 ret); 235 236 return ret; 237 } 238 239 static struct platform_driver tobermory_driver = { 240 .driver = { 241 .name = "tobermory", 242 .pm = &snd_soc_pm_ops, 243 }, 244 .probe = tobermory_probe, 245 }; 246 247 module_platform_driver(tobermory_driver); 248 249 MODULE_DESCRIPTION("Tobermory audio support"); 250 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 251 MODULE_LICENSE("GPL"); 252 MODULE_ALIAS("platform:tobermory"); 253