1 /* 2 * mt8173-rt5650.c -- MT8173 machine driver with RT5650 codecs 3 * 4 * Copyright (c) 2016 MediaTek Inc. 5 * Author: Koro Chen <koro.chen@mediatek.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 and 9 * only version 2 as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17 #include <linux/module.h> 18 #include <linux/gpio.h> 19 #include <linux/of_gpio.h> 20 #include <sound/soc.h> 21 #include <sound/jack.h> 22 #include "../../codecs/rt5645.h" 23 24 #define MCLK_FOR_CODECS 12288000 25 26 enum mt8173_rt5650_mclk { 27 MT8173_RT5650_MCLK_EXTERNAL = 0, 28 MT8173_RT5650_MCLK_INTERNAL, 29 }; 30 31 struct mt8173_rt5650_platform_data { 32 enum mt8173_rt5650_mclk pll_from; 33 /* 0 = external oscillator; 1 = internal source from mt8173 */ 34 }; 35 36 static struct mt8173_rt5650_platform_data mt8173_rt5650_priv = { 37 .pll_from = MT8173_RT5650_MCLK_EXTERNAL, 38 }; 39 40 static const struct snd_soc_dapm_widget mt8173_rt5650_widgets[] = { 41 SND_SOC_DAPM_SPK("Speaker", NULL), 42 SND_SOC_DAPM_MIC("Int Mic", NULL), 43 SND_SOC_DAPM_HP("Headphone", NULL), 44 SND_SOC_DAPM_MIC("Headset Mic", NULL), 45 }; 46 47 static const struct snd_soc_dapm_route mt8173_rt5650_routes[] = { 48 {"Speaker", NULL, "SPOL"}, 49 {"Speaker", NULL, "SPOR"}, 50 {"DMIC L1", NULL, "Int Mic"}, 51 {"DMIC R1", NULL, "Int Mic"}, 52 {"Headphone", NULL, "HPOL"}, 53 {"Headphone", NULL, "HPOR"}, 54 {"Headset Mic", NULL, "micbias1"}, 55 {"Headset Mic", NULL, "micbias2"}, 56 {"IN1P", NULL, "Headset Mic"}, 57 {"IN1N", NULL, "Headset Mic"}, 58 }; 59 60 static const struct snd_kcontrol_new mt8173_rt5650_controls[] = { 61 SOC_DAPM_PIN_SWITCH("Speaker"), 62 SOC_DAPM_PIN_SWITCH("Int Mic"), 63 SOC_DAPM_PIN_SWITCH("Headphone"), 64 SOC_DAPM_PIN_SWITCH("Headset Mic"), 65 }; 66 67 static int mt8173_rt5650_hw_params(struct snd_pcm_substream *substream, 68 struct snd_pcm_hw_params *params) 69 { 70 struct snd_soc_pcm_runtime *rtd = substream->private_data; 71 unsigned int mclk_clock; 72 int i, ret; 73 74 switch (mt8173_rt5650_priv.pll_from) { 75 case MT8173_RT5650_MCLK_EXTERNAL: 76 /* mclk = 12.288M */ 77 mclk_clock = MCLK_FOR_CODECS; 78 break; 79 case MT8173_RT5650_MCLK_INTERNAL: 80 /* mclk = sampling rate*256 */ 81 mclk_clock = params_rate(params) * 256; 82 break; 83 default: 84 /* mclk = 12.288M */ 85 mclk_clock = MCLK_FOR_CODECS; 86 break; 87 } 88 89 for (i = 0; i < rtd->num_codecs; i++) { 90 struct snd_soc_dai *codec_dai = rtd->codec_dais[i]; 91 92 /* pll from mclk */ 93 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, mclk_clock, 94 params_rate(params) * 512); 95 if (ret) 96 return ret; 97 98 /* sysclk from pll */ 99 ret = snd_soc_dai_set_sysclk(codec_dai, 1, 100 params_rate(params) * 512, 101 SND_SOC_CLOCK_IN); 102 if (ret) 103 return ret; 104 } 105 return 0; 106 } 107 108 static const struct snd_soc_ops mt8173_rt5650_ops = { 109 .hw_params = mt8173_rt5650_hw_params, 110 }; 111 112 static struct snd_soc_jack mt8173_rt5650_jack; 113 114 static int mt8173_rt5650_init(struct snd_soc_pcm_runtime *runtime) 115 { 116 struct snd_soc_card *card = runtime->card; 117 struct snd_soc_codec *codec = runtime->codec_dais[0]->codec; 118 const char *codec_capture_dai = runtime->codec_dais[1]->name; 119 int ret; 120 121 rt5645_sel_asrc_clk_src(codec, 122 RT5645_DA_STEREO_FILTER, 123 RT5645_CLK_SEL_I2S1_ASRC); 124 125 if (!strcmp(codec_capture_dai, "rt5645-aif1")) { 126 rt5645_sel_asrc_clk_src(codec, 127 RT5645_AD_STEREO_FILTER, 128 RT5645_CLK_SEL_I2S1_ASRC); 129 } else if (!strcmp(codec_capture_dai, "rt5645-aif2")) { 130 rt5645_sel_asrc_clk_src(codec, 131 RT5645_AD_STEREO_FILTER, 132 RT5645_CLK_SEL_I2S2_ASRC); 133 } else { 134 dev_warn(card->dev, 135 "Only one dai codec found in DTS, enabled rt5645 AD filter\n"); 136 rt5645_sel_asrc_clk_src(codec, 137 RT5645_AD_STEREO_FILTER, 138 RT5645_CLK_SEL_I2S1_ASRC); 139 } 140 141 /* enable jack detection */ 142 ret = snd_soc_card_jack_new(card, "Headset Jack", 143 SND_JACK_HEADPHONE | SND_JACK_MICROPHONE | 144 SND_JACK_BTN_0 | SND_JACK_BTN_1 | 145 SND_JACK_BTN_2 | SND_JACK_BTN_3, 146 &mt8173_rt5650_jack, NULL, 0); 147 if (ret) { 148 dev_err(card->dev, "Can't new Headset Jack %d\n", ret); 149 return ret; 150 } 151 152 return rt5645_set_jack_detect(codec, 153 &mt8173_rt5650_jack, 154 &mt8173_rt5650_jack, 155 &mt8173_rt5650_jack); 156 } 157 158 static struct snd_soc_dai_link_component mt8173_rt5650_codecs[] = { 159 { 160 /* Playback */ 161 .dai_name = "rt5645-aif1", 162 }, 163 { 164 /* Capture */ 165 .dai_name = "rt5645-aif1", 166 }, 167 }; 168 169 enum { 170 DAI_LINK_PLAYBACK, 171 DAI_LINK_CAPTURE, 172 DAI_LINK_HDMI, 173 DAI_LINK_CODEC_I2S, 174 DAI_LINK_HDMI_I2S, 175 }; 176 177 /* Digital audio interface glue - connects codec <---> CPU */ 178 static struct snd_soc_dai_link mt8173_rt5650_dais[] = { 179 /* Front End DAI links */ 180 [DAI_LINK_PLAYBACK] = { 181 .name = "rt5650 Playback", 182 .stream_name = "rt5650 Playback", 183 .cpu_dai_name = "DL1", 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_playback = 1, 189 }, 190 [DAI_LINK_CAPTURE] = { 191 .name = "rt5650 Capture", 192 .stream_name = "rt5650 Capture", 193 .cpu_dai_name = "VUL", 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_capture = 1, 199 }, 200 [DAI_LINK_HDMI] = { 201 .name = "HDMI", 202 .stream_name = "HDMI PCM", 203 .cpu_dai_name = "HDMI", 204 .codec_name = "snd-soc-dummy", 205 .codec_dai_name = "snd-soc-dummy-dai", 206 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 207 .dynamic = 1, 208 .dpcm_playback = 1, 209 }, 210 /* Back End DAI links */ 211 [DAI_LINK_CODEC_I2S] = { 212 .name = "Codec", 213 .cpu_dai_name = "I2S", 214 .no_pcm = 1, 215 .codecs = mt8173_rt5650_codecs, 216 .num_codecs = 2, 217 .init = mt8173_rt5650_init, 218 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 219 SND_SOC_DAIFMT_CBS_CFS, 220 .ops = &mt8173_rt5650_ops, 221 .ignore_pmdown_time = 1, 222 .dpcm_playback = 1, 223 .dpcm_capture = 1, 224 }, 225 [DAI_LINK_HDMI_I2S] = { 226 .name = "HDMI BE", 227 .cpu_dai_name = "HDMIO", 228 .no_pcm = 1, 229 .codec_dai_name = "i2s-hifi", 230 .dpcm_playback = 1, 231 }, 232 }; 233 234 static struct snd_soc_card mt8173_rt5650_card = { 235 .name = "mtk-rt5650", 236 .owner = THIS_MODULE, 237 .dai_link = mt8173_rt5650_dais, 238 .num_links = ARRAY_SIZE(mt8173_rt5650_dais), 239 .controls = mt8173_rt5650_controls, 240 .num_controls = ARRAY_SIZE(mt8173_rt5650_controls), 241 .dapm_widgets = mt8173_rt5650_widgets, 242 .num_dapm_widgets = ARRAY_SIZE(mt8173_rt5650_widgets), 243 .dapm_routes = mt8173_rt5650_routes, 244 .num_dapm_routes = ARRAY_SIZE(mt8173_rt5650_routes), 245 }; 246 247 static int mt8173_rt5650_dev_probe(struct platform_device *pdev) 248 { 249 struct snd_soc_card *card = &mt8173_rt5650_card; 250 struct device_node *platform_node; 251 struct device_node *np; 252 const char *codec_capture_dai; 253 int i, ret; 254 255 platform_node = of_parse_phandle(pdev->dev.of_node, 256 "mediatek,platform", 0); 257 if (!platform_node) { 258 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 259 return -EINVAL; 260 } 261 262 for (i = 0; i < card->num_links; i++) { 263 if (mt8173_rt5650_dais[i].platform_name) 264 continue; 265 mt8173_rt5650_dais[i].platform_of_node = platform_node; 266 } 267 268 mt8173_rt5650_codecs[0].of_node = 269 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 0); 270 if (!mt8173_rt5650_codecs[0].of_node) { 271 dev_err(&pdev->dev, 272 "Property 'audio-codec' missing or invalid\n"); 273 return -EINVAL; 274 } 275 mt8173_rt5650_codecs[1].of_node = mt8173_rt5650_codecs[0].of_node; 276 277 np = of_get_child_by_name(pdev->dev.of_node, "codec-capture"); 278 if (np) { 279 ret = snd_soc_of_get_dai_name(np, &codec_capture_dai); 280 of_node_put(np); 281 if (ret < 0) { 282 dev_err(&pdev->dev, 283 "%s codec_capture_dai name fail %d\n", 284 __func__, ret); 285 return ret; 286 } 287 mt8173_rt5650_codecs[1].dai_name = codec_capture_dai; 288 } 289 290 if (device_property_present(&pdev->dev, "mediatek,mclk")) { 291 ret = device_property_read_u32(&pdev->dev, 292 "mediatek,mclk", 293 &mt8173_rt5650_priv.pll_from); 294 if (ret) { 295 dev_err(&pdev->dev, 296 "%s snd_soc_register_card fail %d\n", 297 __func__, ret); 298 } 299 } 300 301 mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node = 302 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 1); 303 if (!mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node) { 304 dev_err(&pdev->dev, 305 "Property 'audio-codec' missing or invalid\n"); 306 return -EINVAL; 307 } 308 card->dev = &pdev->dev; 309 310 ret = devm_snd_soc_register_card(&pdev->dev, card); 311 if (ret) 312 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", 313 __func__, ret); 314 return ret; 315 } 316 317 static const struct of_device_id mt8173_rt5650_dt_match[] = { 318 { .compatible = "mediatek,mt8173-rt5650", }, 319 { } 320 }; 321 MODULE_DEVICE_TABLE(of, mt8173_rt5650_dt_match); 322 323 static struct platform_driver mt8173_rt5650_driver = { 324 .driver = { 325 .name = "mtk-rt5650", 326 .of_match_table = mt8173_rt5650_dt_match, 327 #ifdef CONFIG_PM 328 .pm = &snd_soc_pm_ops, 329 #endif 330 }, 331 .probe = mt8173_rt5650_dev_probe, 332 }; 333 334 module_platform_driver(mt8173_rt5650_driver); 335 336 /* Module information */ 337 MODULE_DESCRIPTION("MT8173 RT5650 SoC machine driver"); 338 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>"); 339 MODULE_LICENSE("GPL v2"); 340 MODULE_ALIAS("platform:mtk-rt5650"); 341 342