1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * mt8173-rt5650.c -- MT8173 machine driver with RT5650 codecs 4 * 5 * Copyright (c) 2016 MediaTek Inc. 6 * Author: Koro Chen <koro.chen@mediatek.com> 7 */ 8 9 #include <linux/module.h> 10 #include <linux/gpio.h> 11 #include <linux/of_gpio.h> 12 #include <sound/soc.h> 13 #include <sound/jack.h> 14 #include "../../codecs/rt5645.h" 15 16 #define MCLK_FOR_CODECS 12288000 17 18 enum mt8173_rt5650_mclk { 19 MT8173_RT5650_MCLK_EXTERNAL = 0, 20 MT8173_RT5650_MCLK_INTERNAL, 21 }; 22 23 struct mt8173_rt5650_platform_data { 24 enum mt8173_rt5650_mclk pll_from; 25 /* 0 = external oscillator; 1 = internal source from mt8173 */ 26 }; 27 28 static struct mt8173_rt5650_platform_data mt8173_rt5650_priv = { 29 .pll_from = MT8173_RT5650_MCLK_EXTERNAL, 30 }; 31 32 static const struct snd_soc_dapm_widget mt8173_rt5650_widgets[] = { 33 SND_SOC_DAPM_SPK("Speaker", NULL), 34 SND_SOC_DAPM_MIC("Int Mic", NULL), 35 SND_SOC_DAPM_HP("Headphone", NULL), 36 SND_SOC_DAPM_MIC("Headset Mic", NULL), 37 }; 38 39 static const struct snd_soc_dapm_route mt8173_rt5650_routes[] = { 40 {"Speaker", NULL, "SPOL"}, 41 {"Speaker", NULL, "SPOR"}, 42 {"DMIC L1", NULL, "Int Mic"}, 43 {"DMIC R1", NULL, "Int Mic"}, 44 {"Headphone", NULL, "HPOL"}, 45 {"Headphone", NULL, "HPOR"}, 46 {"IN1P", NULL, "Headset Mic"}, 47 {"IN1N", NULL, "Headset Mic"}, 48 }; 49 50 static const struct snd_kcontrol_new mt8173_rt5650_controls[] = { 51 SOC_DAPM_PIN_SWITCH("Speaker"), 52 SOC_DAPM_PIN_SWITCH("Int Mic"), 53 SOC_DAPM_PIN_SWITCH("Headphone"), 54 SOC_DAPM_PIN_SWITCH("Headset Mic"), 55 }; 56 57 static int mt8173_rt5650_hw_params(struct snd_pcm_substream *substream, 58 struct snd_pcm_hw_params *params) 59 { 60 struct snd_soc_pcm_runtime *rtd = substream->private_data; 61 unsigned int mclk_clock; 62 int i, ret; 63 64 switch (mt8173_rt5650_priv.pll_from) { 65 case MT8173_RT5650_MCLK_EXTERNAL: 66 /* mclk = 12.288M */ 67 mclk_clock = MCLK_FOR_CODECS; 68 break; 69 case MT8173_RT5650_MCLK_INTERNAL: 70 /* mclk = sampling rate*256 */ 71 mclk_clock = params_rate(params) * 256; 72 break; 73 default: 74 /* mclk = 12.288M */ 75 mclk_clock = MCLK_FOR_CODECS; 76 break; 77 } 78 79 for (i = 0; i < rtd->num_codecs; i++) { 80 struct snd_soc_dai *codec_dai = rtd->codec_dais[i]; 81 82 /* pll from mclk */ 83 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, mclk_clock, 84 params_rate(params) * 512); 85 if (ret) 86 return ret; 87 88 /* sysclk from pll */ 89 ret = snd_soc_dai_set_sysclk(codec_dai, 1, 90 params_rate(params) * 512, 91 SND_SOC_CLOCK_IN); 92 if (ret) 93 return ret; 94 } 95 return 0; 96 } 97 98 static const struct snd_soc_ops mt8173_rt5650_ops = { 99 .hw_params = mt8173_rt5650_hw_params, 100 }; 101 102 static struct snd_soc_jack mt8173_rt5650_jack; 103 104 static int mt8173_rt5650_init(struct snd_soc_pcm_runtime *runtime) 105 { 106 struct snd_soc_card *card = runtime->card; 107 struct snd_soc_component *component = runtime->codec_dais[0]->component; 108 const char *codec_capture_dai = runtime->codec_dais[1]->name; 109 int ret; 110 111 rt5645_sel_asrc_clk_src(component, 112 RT5645_DA_STEREO_FILTER, 113 RT5645_CLK_SEL_I2S1_ASRC); 114 115 if (!strcmp(codec_capture_dai, "rt5645-aif1")) { 116 rt5645_sel_asrc_clk_src(component, 117 RT5645_AD_STEREO_FILTER, 118 RT5645_CLK_SEL_I2S1_ASRC); 119 } else if (!strcmp(codec_capture_dai, "rt5645-aif2")) { 120 rt5645_sel_asrc_clk_src(component, 121 RT5645_AD_STEREO_FILTER, 122 RT5645_CLK_SEL_I2S2_ASRC); 123 } else { 124 dev_warn(card->dev, 125 "Only one dai codec found in DTS, enabled rt5645 AD filter\n"); 126 rt5645_sel_asrc_clk_src(component, 127 RT5645_AD_STEREO_FILTER, 128 RT5645_CLK_SEL_I2S1_ASRC); 129 } 130 131 /* enable jack detection */ 132 ret = snd_soc_card_jack_new(card, "Headset Jack", 133 SND_JACK_HEADPHONE | SND_JACK_MICROPHONE | 134 SND_JACK_BTN_0 | SND_JACK_BTN_1 | 135 SND_JACK_BTN_2 | SND_JACK_BTN_3, 136 &mt8173_rt5650_jack, NULL, 0); 137 if (ret) { 138 dev_err(card->dev, "Can't new Headset Jack %d\n", ret); 139 return ret; 140 } 141 142 return rt5645_set_jack_detect(component, 143 &mt8173_rt5650_jack, 144 &mt8173_rt5650_jack, 145 &mt8173_rt5650_jack); 146 } 147 148 static struct snd_soc_dai_link_component mt8173_rt5650_codecs[] = { 149 { 150 /* Playback */ 151 .dai_name = "rt5645-aif1", 152 }, 153 { 154 /* Capture */ 155 .dai_name = "rt5645-aif1", 156 }, 157 }; 158 159 enum { 160 DAI_LINK_PLAYBACK, 161 DAI_LINK_CAPTURE, 162 DAI_LINK_HDMI, 163 DAI_LINK_CODEC_I2S, 164 DAI_LINK_HDMI_I2S, 165 }; 166 167 /* Digital audio interface glue - connects codec <---> CPU */ 168 static struct snd_soc_dai_link mt8173_rt5650_dais[] = { 169 /* Front End DAI links */ 170 [DAI_LINK_PLAYBACK] = { 171 .name = "rt5650 Playback", 172 .stream_name = "rt5650 Playback", 173 .cpu_dai_name = "DL1", 174 .codec_name = "snd-soc-dummy", 175 .codec_dai_name = "snd-soc-dummy-dai", 176 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 177 .dynamic = 1, 178 .dpcm_playback = 1, 179 }, 180 [DAI_LINK_CAPTURE] = { 181 .name = "rt5650 Capture", 182 .stream_name = "rt5650 Capture", 183 .cpu_dai_name = "VUL", 184 .codec_name = "snd-soc-dummy", 185 .codec_dai_name = "snd-soc-dummy-dai", 186 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 187 .dynamic = 1, 188 .dpcm_capture = 1, 189 }, 190 [DAI_LINK_HDMI] = { 191 .name = "HDMI", 192 .stream_name = "HDMI PCM", 193 .cpu_dai_name = "HDMI", 194 .codec_name = "snd-soc-dummy", 195 .codec_dai_name = "snd-soc-dummy-dai", 196 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 197 .dynamic = 1, 198 .dpcm_playback = 1, 199 }, 200 /* Back End DAI links */ 201 [DAI_LINK_CODEC_I2S] = { 202 .name = "Codec", 203 .cpu_dai_name = "I2S", 204 .no_pcm = 1, 205 .codecs = mt8173_rt5650_codecs, 206 .num_codecs = 2, 207 .init = mt8173_rt5650_init, 208 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 209 SND_SOC_DAIFMT_CBS_CFS, 210 .ops = &mt8173_rt5650_ops, 211 .ignore_pmdown_time = 1, 212 .dpcm_playback = 1, 213 .dpcm_capture = 1, 214 }, 215 [DAI_LINK_HDMI_I2S] = { 216 .name = "HDMI BE", 217 .cpu_dai_name = "HDMIO", 218 .no_pcm = 1, 219 .codec_dai_name = "i2s-hifi", 220 .dpcm_playback = 1, 221 }, 222 }; 223 224 static struct snd_soc_card mt8173_rt5650_card = { 225 .name = "mtk-rt5650", 226 .owner = THIS_MODULE, 227 .dai_link = mt8173_rt5650_dais, 228 .num_links = ARRAY_SIZE(mt8173_rt5650_dais), 229 .controls = mt8173_rt5650_controls, 230 .num_controls = ARRAY_SIZE(mt8173_rt5650_controls), 231 .dapm_widgets = mt8173_rt5650_widgets, 232 .num_dapm_widgets = ARRAY_SIZE(mt8173_rt5650_widgets), 233 .dapm_routes = mt8173_rt5650_routes, 234 .num_dapm_routes = ARRAY_SIZE(mt8173_rt5650_routes), 235 }; 236 237 static int mt8173_rt5650_dev_probe(struct platform_device *pdev) 238 { 239 struct snd_soc_card *card = &mt8173_rt5650_card; 240 struct device_node *platform_node; 241 struct device_node *np; 242 const char *codec_capture_dai; 243 int i, ret; 244 245 platform_node = of_parse_phandle(pdev->dev.of_node, 246 "mediatek,platform", 0); 247 if (!platform_node) { 248 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 249 return -EINVAL; 250 } 251 252 for (i = 0; i < card->num_links; i++) { 253 if (mt8173_rt5650_dais[i].platform_name) 254 continue; 255 mt8173_rt5650_dais[i].platform_of_node = platform_node; 256 } 257 258 mt8173_rt5650_codecs[0].of_node = 259 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 0); 260 if (!mt8173_rt5650_codecs[0].of_node) { 261 dev_err(&pdev->dev, 262 "Property 'audio-codec' missing or invalid\n"); 263 return -EINVAL; 264 } 265 mt8173_rt5650_codecs[1].of_node = mt8173_rt5650_codecs[0].of_node; 266 267 np = of_get_child_by_name(pdev->dev.of_node, "codec-capture"); 268 if (np) { 269 ret = snd_soc_of_get_dai_name(np, &codec_capture_dai); 270 of_node_put(np); 271 if (ret < 0) { 272 dev_err(&pdev->dev, 273 "%s codec_capture_dai name fail %d\n", 274 __func__, ret); 275 return ret; 276 } 277 mt8173_rt5650_codecs[1].dai_name = codec_capture_dai; 278 } 279 280 if (device_property_present(&pdev->dev, "mediatek,mclk")) { 281 ret = device_property_read_u32(&pdev->dev, 282 "mediatek,mclk", 283 &mt8173_rt5650_priv.pll_from); 284 if (ret) { 285 dev_err(&pdev->dev, 286 "%s snd_soc_register_card fail %d\n", 287 __func__, ret); 288 } 289 } 290 291 mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node = 292 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 1); 293 if (!mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node) { 294 dev_err(&pdev->dev, 295 "Property 'audio-codec' missing or invalid\n"); 296 return -EINVAL; 297 } 298 card->dev = &pdev->dev; 299 300 ret = devm_snd_soc_register_card(&pdev->dev, card); 301 if (ret) 302 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", 303 __func__, ret); 304 return ret; 305 } 306 307 static const struct of_device_id mt8173_rt5650_dt_match[] = { 308 { .compatible = "mediatek,mt8173-rt5650", }, 309 { } 310 }; 311 MODULE_DEVICE_TABLE(of, mt8173_rt5650_dt_match); 312 313 static struct platform_driver mt8173_rt5650_driver = { 314 .driver = { 315 .name = "mtk-rt5650", 316 .of_match_table = mt8173_rt5650_dt_match, 317 #ifdef CONFIG_PM 318 .pm = &snd_soc_pm_ops, 319 #endif 320 }, 321 .probe = mt8173_rt5650_dev_probe, 322 }; 323 324 module_platform_driver(mt8173_rt5650_driver); 325 326 /* Module information */ 327 MODULE_DESCRIPTION("MT8173 RT5650 SoC machine driver"); 328 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>"); 329 MODULE_LICENSE("GPL v2"); 330 MODULE_ALIAS("platform:mtk-rt5650"); 331 332