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 {"IN1P", NULL, "Headset Mic"}, 55 {"IN1N", NULL, "Headset Mic"}, 56 }; 57 58 static const struct snd_kcontrol_new mt8173_rt5650_controls[] = { 59 SOC_DAPM_PIN_SWITCH("Speaker"), 60 SOC_DAPM_PIN_SWITCH("Int Mic"), 61 SOC_DAPM_PIN_SWITCH("Headphone"), 62 SOC_DAPM_PIN_SWITCH("Headset Mic"), 63 }; 64 65 static int mt8173_rt5650_hw_params(struct snd_pcm_substream *substream, 66 struct snd_pcm_hw_params *params) 67 { 68 struct snd_soc_pcm_runtime *rtd = substream->private_data; 69 unsigned int mclk_clock; 70 int i, ret; 71 72 switch (mt8173_rt5650_priv.pll_from) { 73 case MT8173_RT5650_MCLK_EXTERNAL: 74 /* mclk = 12.288M */ 75 mclk_clock = MCLK_FOR_CODECS; 76 break; 77 case MT8173_RT5650_MCLK_INTERNAL: 78 /* mclk = sampling rate*256 */ 79 mclk_clock = params_rate(params) * 256; 80 break; 81 default: 82 /* mclk = 12.288M */ 83 mclk_clock = MCLK_FOR_CODECS; 84 break; 85 } 86 87 for (i = 0; i < rtd->num_codecs; i++) { 88 struct snd_soc_dai *codec_dai = rtd->codec_dais[i]; 89 90 /* pll from mclk */ 91 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, mclk_clock, 92 params_rate(params) * 512); 93 if (ret) 94 return ret; 95 96 /* sysclk from pll */ 97 ret = snd_soc_dai_set_sysclk(codec_dai, 1, 98 params_rate(params) * 512, 99 SND_SOC_CLOCK_IN); 100 if (ret) 101 return ret; 102 } 103 return 0; 104 } 105 106 static const struct snd_soc_ops mt8173_rt5650_ops = { 107 .hw_params = mt8173_rt5650_hw_params, 108 }; 109 110 static struct snd_soc_jack mt8173_rt5650_jack; 111 112 static int mt8173_rt5650_init(struct snd_soc_pcm_runtime *runtime) 113 { 114 struct snd_soc_card *card = runtime->card; 115 struct snd_soc_codec *codec = runtime->codec_dais[0]->codec; 116 const char *codec_capture_dai = runtime->codec_dais[1]->name; 117 int ret; 118 119 rt5645_sel_asrc_clk_src(codec, 120 RT5645_DA_STEREO_FILTER, 121 RT5645_CLK_SEL_I2S1_ASRC); 122 123 if (!strcmp(codec_capture_dai, "rt5645-aif1")) { 124 rt5645_sel_asrc_clk_src(codec, 125 RT5645_AD_STEREO_FILTER, 126 RT5645_CLK_SEL_I2S1_ASRC); 127 } else if (!strcmp(codec_capture_dai, "rt5645-aif2")) { 128 rt5645_sel_asrc_clk_src(codec, 129 RT5645_AD_STEREO_FILTER, 130 RT5645_CLK_SEL_I2S2_ASRC); 131 } else { 132 dev_warn(card->dev, 133 "Only one dai codec found in DTS, enabled rt5645 AD filter\n"); 134 rt5645_sel_asrc_clk_src(codec, 135 RT5645_AD_STEREO_FILTER, 136 RT5645_CLK_SEL_I2S1_ASRC); 137 } 138 139 /* enable jack detection */ 140 ret = snd_soc_card_jack_new(card, "Headset Jack", 141 SND_JACK_HEADPHONE | SND_JACK_MICROPHONE | 142 SND_JACK_BTN_0 | SND_JACK_BTN_1 | 143 SND_JACK_BTN_2 | SND_JACK_BTN_3, 144 &mt8173_rt5650_jack, NULL, 0); 145 if (ret) { 146 dev_err(card->dev, "Can't new Headset Jack %d\n", ret); 147 return ret; 148 } 149 150 return rt5645_set_jack_detect(codec, 151 &mt8173_rt5650_jack, 152 &mt8173_rt5650_jack, 153 &mt8173_rt5650_jack); 154 } 155 156 static struct snd_soc_dai_link_component mt8173_rt5650_codecs[] = { 157 { 158 /* Playback */ 159 .dai_name = "rt5645-aif1", 160 }, 161 { 162 /* Capture */ 163 .dai_name = "rt5645-aif1", 164 }, 165 }; 166 167 enum { 168 DAI_LINK_PLAYBACK, 169 DAI_LINK_CAPTURE, 170 DAI_LINK_HDMI, 171 DAI_LINK_CODEC_I2S, 172 DAI_LINK_HDMI_I2S, 173 }; 174 175 /* Digital audio interface glue - connects codec <---> CPU */ 176 static struct snd_soc_dai_link mt8173_rt5650_dais[] = { 177 /* Front End DAI links */ 178 [DAI_LINK_PLAYBACK] = { 179 .name = "rt5650 Playback", 180 .stream_name = "rt5650 Playback", 181 .cpu_dai_name = "DL1", 182 .codec_name = "snd-soc-dummy", 183 .codec_dai_name = "snd-soc-dummy-dai", 184 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 185 .dynamic = 1, 186 .dpcm_playback = 1, 187 }, 188 [DAI_LINK_CAPTURE] = { 189 .name = "rt5650 Capture", 190 .stream_name = "rt5650 Capture", 191 .cpu_dai_name = "VUL", 192 .codec_name = "snd-soc-dummy", 193 .codec_dai_name = "snd-soc-dummy-dai", 194 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 195 .dynamic = 1, 196 .dpcm_capture = 1, 197 }, 198 [DAI_LINK_HDMI] = { 199 .name = "HDMI", 200 .stream_name = "HDMI PCM", 201 .cpu_dai_name = "HDMI", 202 .codec_name = "snd-soc-dummy", 203 .codec_dai_name = "snd-soc-dummy-dai", 204 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 205 .dynamic = 1, 206 .dpcm_playback = 1, 207 }, 208 /* Back End DAI links */ 209 [DAI_LINK_CODEC_I2S] = { 210 .name = "Codec", 211 .cpu_dai_name = "I2S", 212 .no_pcm = 1, 213 .codecs = mt8173_rt5650_codecs, 214 .num_codecs = 2, 215 .init = mt8173_rt5650_init, 216 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 217 SND_SOC_DAIFMT_CBS_CFS, 218 .ops = &mt8173_rt5650_ops, 219 .ignore_pmdown_time = 1, 220 .dpcm_playback = 1, 221 .dpcm_capture = 1, 222 }, 223 [DAI_LINK_HDMI_I2S] = { 224 .name = "HDMI BE", 225 .cpu_dai_name = "HDMIO", 226 .no_pcm = 1, 227 .codec_dai_name = "i2s-hifi", 228 .dpcm_playback = 1, 229 }, 230 }; 231 232 static struct snd_soc_card mt8173_rt5650_card = { 233 .name = "mtk-rt5650", 234 .owner = THIS_MODULE, 235 .dai_link = mt8173_rt5650_dais, 236 .num_links = ARRAY_SIZE(mt8173_rt5650_dais), 237 .controls = mt8173_rt5650_controls, 238 .num_controls = ARRAY_SIZE(mt8173_rt5650_controls), 239 .dapm_widgets = mt8173_rt5650_widgets, 240 .num_dapm_widgets = ARRAY_SIZE(mt8173_rt5650_widgets), 241 .dapm_routes = mt8173_rt5650_routes, 242 .num_dapm_routes = ARRAY_SIZE(mt8173_rt5650_routes), 243 }; 244 245 static int mt8173_rt5650_dev_probe(struct platform_device *pdev) 246 { 247 struct snd_soc_card *card = &mt8173_rt5650_card; 248 struct device_node *platform_node; 249 struct device_node *np; 250 const char *codec_capture_dai; 251 int i, ret; 252 253 platform_node = of_parse_phandle(pdev->dev.of_node, 254 "mediatek,platform", 0); 255 if (!platform_node) { 256 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 257 return -EINVAL; 258 } 259 260 for (i = 0; i < card->num_links; i++) { 261 if (mt8173_rt5650_dais[i].platform_name) 262 continue; 263 mt8173_rt5650_dais[i].platform_of_node = platform_node; 264 } 265 266 mt8173_rt5650_codecs[0].of_node = 267 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 0); 268 if (!mt8173_rt5650_codecs[0].of_node) { 269 dev_err(&pdev->dev, 270 "Property 'audio-codec' missing or invalid\n"); 271 return -EINVAL; 272 } 273 mt8173_rt5650_codecs[1].of_node = mt8173_rt5650_codecs[0].of_node; 274 275 if (of_find_node_by_name(platform_node, "codec-capture")) { 276 np = of_get_child_by_name(pdev->dev.of_node, "codec-capture"); 277 if (!np) { 278 dev_err(&pdev->dev, 279 "%s: Can't find codec-capture DT node\n", 280 __func__); 281 return -EINVAL; 282 } 283 ret = snd_soc_of_get_dai_name(np, &codec_capture_dai); 284 if (ret < 0) { 285 dev_err(&pdev->dev, 286 "%s codec_capture_dai name fail %d\n", 287 __func__, ret); 288 return ret; 289 } 290 mt8173_rt5650_codecs[1].dai_name = codec_capture_dai; 291 } 292 293 if (device_property_present(&pdev->dev, "mediatek,mclk")) { 294 ret = device_property_read_u32(&pdev->dev, 295 "mediatek,mclk", 296 &mt8173_rt5650_priv.pll_from); 297 if (ret) { 298 dev_err(&pdev->dev, 299 "%s snd_soc_register_card fail %d\n", 300 __func__, ret); 301 } 302 } 303 304 mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node = 305 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 1); 306 if (!mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node) { 307 dev_err(&pdev->dev, 308 "Property 'audio-codec' missing or invalid\n"); 309 return -EINVAL; 310 } 311 card->dev = &pdev->dev; 312 313 ret = devm_snd_soc_register_card(&pdev->dev, card); 314 if (ret) 315 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", 316 __func__, ret); 317 return ret; 318 } 319 320 static const struct of_device_id mt8173_rt5650_dt_match[] = { 321 { .compatible = "mediatek,mt8173-rt5650", }, 322 { } 323 }; 324 MODULE_DEVICE_TABLE(of, mt8173_rt5650_dt_match); 325 326 static struct platform_driver mt8173_rt5650_driver = { 327 .driver = { 328 .name = "mtk-rt5650", 329 .of_match_table = mt8173_rt5650_dt_match, 330 #ifdef CONFIG_PM 331 .pm = &snd_soc_pm_ops, 332 #endif 333 }, 334 .probe = mt8173_rt5650_dev_probe, 335 }; 336 337 module_platform_driver(mt8173_rt5650_driver); 338 339 /* Module information */ 340 MODULE_DESCRIPTION("MT8173 RT5650 SoC machine driver"); 341 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>"); 342 MODULE_LICENSE("GPL v2"); 343 MODULE_ALIAS("platform:mtk-rt5650"); 344 345