10a590b1dSMark Brown /* 20a590b1dSMark Brown * Littlemill audio support 30a590b1dSMark Brown * 40a590b1dSMark Brown * Copyright 2011 Wolfson Microelectronics 50a590b1dSMark Brown * 60a590b1dSMark Brown * This program is free software; you can redistribute it and/or modify it 70a590b1dSMark Brown * under the terms of the GNU General Public License as published by the 80a590b1dSMark Brown * Free Software Foundation; either version 2 of the License, or (at your 90a590b1dSMark Brown * option) any later version. 100a590b1dSMark Brown */ 110a590b1dSMark Brown 120a590b1dSMark Brown #include <sound/soc.h> 130a590b1dSMark Brown #include <sound/soc-dapm.h> 140a590b1dSMark Brown #include <sound/jack.h> 150a590b1dSMark Brown #include <linux/gpio.h> 160a590b1dSMark Brown #include <linux/module.h> 170a590b1dSMark Brown 180a590b1dSMark Brown #include "../codecs/wm8994.h" 190a590b1dSMark Brown 200a590b1dSMark Brown static int sample_rate = 44100; 210a590b1dSMark Brown 220a590b1dSMark Brown static int littlemill_set_bias_level(struct snd_soc_card *card, 230a590b1dSMark Brown struct snd_soc_dapm_context *dapm, 240a590b1dSMark Brown enum snd_soc_bias_level level) 250a590b1dSMark Brown { 260cbe4b36SMark Brown struct snd_soc_dai *aif1_dai = card->rtd[0].codec_dai; 270a590b1dSMark Brown int ret; 280a590b1dSMark Brown 290cbe4b36SMark Brown if (dapm->dev != aif1_dai->dev) 300a590b1dSMark Brown return 0; 310a590b1dSMark Brown 320a590b1dSMark Brown switch (level) { 330a590b1dSMark Brown case SND_SOC_BIAS_PREPARE: 340a590b1dSMark Brown /* 350a590b1dSMark Brown * If we've not already clocked things via hw_params() 360a590b1dSMark Brown * then do so now, otherwise these are noops. 370a590b1dSMark Brown */ 380a590b1dSMark Brown if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { 390cbe4b36SMark Brown ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, 400a590b1dSMark Brown WM8994_FLL_SRC_MCLK2, 32768, 410a590b1dSMark Brown sample_rate * 512); 420a590b1dSMark Brown if (ret < 0) { 430a590b1dSMark Brown pr_err("Failed to start FLL: %d\n", ret); 440a590b1dSMark Brown return ret; 450a590b1dSMark Brown } 460a590b1dSMark Brown 470cbe4b36SMark Brown ret = snd_soc_dai_set_sysclk(aif1_dai, 480a590b1dSMark Brown WM8994_SYSCLK_FLL1, 490a590b1dSMark Brown sample_rate * 512, 500a590b1dSMark Brown SND_SOC_CLOCK_IN); 510a590b1dSMark Brown if (ret < 0) { 520a590b1dSMark Brown pr_err("Failed to set SYSCLK: %d\n", ret); 530a590b1dSMark Brown return ret; 540a590b1dSMark Brown } 550a590b1dSMark Brown } 560a590b1dSMark Brown break; 570a590b1dSMark Brown 580a590b1dSMark Brown default: 590a590b1dSMark Brown break; 600a590b1dSMark Brown } 610a590b1dSMark Brown 620a590b1dSMark Brown return 0; 630a590b1dSMark Brown } 640a590b1dSMark Brown 650a590b1dSMark Brown static int littlemill_set_bias_level_post(struct snd_soc_card *card, 660a590b1dSMark Brown struct snd_soc_dapm_context *dapm, 670a590b1dSMark Brown enum snd_soc_bias_level level) 680a590b1dSMark Brown { 690cbe4b36SMark Brown struct snd_soc_dai *aif1_dai = card->rtd[0].codec_dai; 700a590b1dSMark Brown int ret; 710a590b1dSMark Brown 720cbe4b36SMark Brown if (dapm->dev != aif1_dai->dev) 730a590b1dSMark Brown return 0; 740a590b1dSMark Brown 750a590b1dSMark Brown switch (level) { 760a590b1dSMark Brown case SND_SOC_BIAS_STANDBY: 770cbe4b36SMark Brown ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, 780cbe4b36SMark Brown 32768, SND_SOC_CLOCK_IN); 790cbe4b36SMark Brown if (ret < 0) { 800cbe4b36SMark Brown pr_err("Failed to switch away from FLL1: %d\n", ret); 810cbe4b36SMark Brown return ret; 820cbe4b36SMark Brown } 830cbe4b36SMark Brown 840cbe4b36SMark Brown ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, 850cbe4b36SMark Brown 0, 0, 0); 860cbe4b36SMark Brown if (ret < 0) { 870cbe4b36SMark Brown pr_err("Failed to stop FLL1: %d\n", ret); 880cbe4b36SMark Brown return ret; 890cbe4b36SMark Brown } 900cbe4b36SMark Brown break; 910cbe4b36SMark Brown 920a590b1dSMark Brown default: 930a590b1dSMark Brown break; 940a590b1dSMark Brown } 950a590b1dSMark Brown 960a590b1dSMark Brown dapm->bias_level = level; 970a590b1dSMark Brown 980a590b1dSMark Brown return 0; 990a590b1dSMark Brown } 1000a590b1dSMark Brown 1010a590b1dSMark Brown static int littlemill_hw_params(struct snd_pcm_substream *substream, 1020a590b1dSMark Brown struct snd_pcm_hw_params *params) 1030a590b1dSMark Brown { 1040a590b1dSMark Brown struct snd_soc_pcm_runtime *rtd = substream->private_data; 1050a590b1dSMark Brown struct snd_soc_dai *codec_dai = rtd->codec_dai; 1060a590b1dSMark Brown int ret; 1070a590b1dSMark Brown 1080a590b1dSMark Brown sample_rate = params_rate(params); 1090a590b1dSMark Brown 1100a590b1dSMark Brown ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, 1110a590b1dSMark Brown WM8994_FLL_SRC_MCLK2, 32768, 1120a590b1dSMark Brown sample_rate * 512); 1130a590b1dSMark Brown if (ret < 0) { 1140a590b1dSMark Brown pr_err("Failed to start FLL: %d\n", ret); 1150a590b1dSMark Brown return ret; 1160a590b1dSMark Brown } 1170a590b1dSMark Brown 1180a590b1dSMark Brown ret = snd_soc_dai_set_sysclk(codec_dai, 1190a590b1dSMark Brown WM8994_SYSCLK_FLL1, 1200a590b1dSMark Brown sample_rate * 512, 1210a590b1dSMark Brown SND_SOC_CLOCK_IN); 1220a590b1dSMark Brown if (ret < 0) { 1230a590b1dSMark Brown pr_err("Failed to set SYSCLK: %d\n", ret); 1240a590b1dSMark Brown return ret; 1250a590b1dSMark Brown } 1260a590b1dSMark Brown 1270a590b1dSMark Brown return 0; 1280a590b1dSMark Brown } 1290a590b1dSMark Brown 1300a590b1dSMark Brown static struct snd_soc_ops littlemill_ops = { 1310a590b1dSMark Brown .hw_params = littlemill_hw_params, 1320a590b1dSMark Brown }; 1330a590b1dSMark Brown 1340cbe4b36SMark Brown static const struct snd_soc_pcm_stream baseband_params = { 1350cbe4b36SMark Brown .formats = SNDRV_PCM_FMTBIT_S32_LE, 1360cbe4b36SMark Brown .rate_min = 8000, 1370cbe4b36SMark Brown .rate_max = 8000, 1380cbe4b36SMark Brown .channels_min = 2, 1390cbe4b36SMark Brown .channels_max = 2, 1400cbe4b36SMark Brown }; 1410cbe4b36SMark Brown 1420a590b1dSMark Brown static struct snd_soc_dai_link littlemill_dai[] = { 1430a590b1dSMark Brown { 1440a590b1dSMark Brown .name = "CPU", 1450a590b1dSMark Brown .stream_name = "CPU", 1460a590b1dSMark Brown .cpu_dai_name = "samsung-i2s.0", 1470a590b1dSMark Brown .codec_dai_name = "wm8994-aif1", 148a08485d8SPadmavathi Venna .platform_name = "samsung-i2s.0", 1490a590b1dSMark Brown .codec_name = "wm8994-codec", 1500a590b1dSMark Brown .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF 1510a590b1dSMark Brown | SND_SOC_DAIFMT_CBM_CFM, 1520a590b1dSMark Brown .ops = &littlemill_ops, 1530a590b1dSMark Brown }, 1540cbe4b36SMark Brown { 1550cbe4b36SMark Brown .name = "Baseband", 1560cbe4b36SMark Brown .stream_name = "Baseband", 1570cbe4b36SMark Brown .cpu_dai_name = "wm8994-aif2", 1580cbe4b36SMark Brown .codec_dai_name = "wm1250-ev1", 1590cbe4b36SMark Brown .codec_name = "wm1250-ev1.1-0027", 1600cbe4b36SMark Brown .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF 1610cbe4b36SMark Brown | SND_SOC_DAIFMT_CBM_CFM, 1620cbe4b36SMark Brown .ignore_suspend = 1, 1630cbe4b36SMark Brown .params = &baseband_params, 1640cbe4b36SMark Brown }, 1650a590b1dSMark Brown }; 1660a590b1dSMark Brown 16768a02db4SMark Brown static int bbclk_ev(struct snd_soc_dapm_widget *w, 16868a02db4SMark Brown struct snd_kcontrol *kcontrol, int event) 16968a02db4SMark Brown { 17068a02db4SMark Brown struct snd_soc_card *card = w->dapm->card; 17168a02db4SMark Brown struct snd_soc_dai *aif2_dai = card->rtd[1].cpu_dai; 17268a02db4SMark Brown int ret; 17368a02db4SMark Brown 17468a02db4SMark Brown switch (event) { 17568a02db4SMark Brown case SND_SOC_DAPM_PRE_PMU: 17668a02db4SMark Brown ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2, 17768a02db4SMark Brown WM8994_FLL_SRC_BCLK, 64 * 8000, 17868a02db4SMark Brown 8000 * 256); 17968a02db4SMark Brown if (ret < 0) { 18068a02db4SMark Brown pr_err("Failed to start FLL: %d\n", ret); 18168a02db4SMark Brown return ret; 18268a02db4SMark Brown } 18368a02db4SMark Brown 18468a02db4SMark Brown ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_FLL2, 18568a02db4SMark Brown 8000 * 256, 18668a02db4SMark Brown SND_SOC_CLOCK_IN); 18768a02db4SMark Brown if (ret < 0) { 18868a02db4SMark Brown pr_err("Failed to set SYSCLK: %d\n", ret); 18968a02db4SMark Brown return ret; 19068a02db4SMark Brown } 19168a02db4SMark Brown break; 19268a02db4SMark Brown case SND_SOC_DAPM_POST_PMD: 19368a02db4SMark Brown ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2, 19468a02db4SMark Brown 32768, SND_SOC_CLOCK_IN); 19568a02db4SMark Brown if (ret < 0) { 19668a02db4SMark Brown pr_err("Failed to switch away from FLL2: %d\n", ret); 19768a02db4SMark Brown return ret; 19868a02db4SMark Brown } 19968a02db4SMark Brown 20068a02db4SMark Brown ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2, 20168a02db4SMark Brown 0, 0, 0); 20268a02db4SMark Brown if (ret < 0) { 20368a02db4SMark Brown pr_err("Failed to stop FLL2: %d\n", ret); 20468a02db4SMark Brown return ret; 20568a02db4SMark Brown } 20668a02db4SMark Brown break; 20768a02db4SMark Brown default: 20868a02db4SMark Brown return -EINVAL; 20968a02db4SMark Brown } 21068a02db4SMark Brown 21168a02db4SMark Brown return 0; 21268a02db4SMark Brown } 21368a02db4SMark Brown 21431a2239aSMark Brown static const struct snd_kcontrol_new controls[] = { 21531a2239aSMark Brown SOC_DAPM_PIN_SWITCH("WM1250 Input"), 21631a2239aSMark Brown SOC_DAPM_PIN_SWITCH("WM1250 Output"), 21731a2239aSMark Brown }; 21831a2239aSMark Brown 2190a590b1dSMark Brown static struct snd_soc_dapm_widget widgets[] = { 2200a590b1dSMark Brown SND_SOC_DAPM_HP("Headphone", NULL), 2218f103167SMark Brown 2228f103167SMark Brown SND_SOC_DAPM_MIC("AMIC", NULL), 2238f103167SMark Brown SND_SOC_DAPM_MIC("DMIC", NULL), 22468a02db4SMark Brown 22568a02db4SMark Brown SND_SOC_DAPM_SUPPLY_S("Baseband Clock", -1, SND_SOC_NOPM, 0, 0, 22668a02db4SMark Brown bbclk_ev, 22768a02db4SMark Brown SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 2280a590b1dSMark Brown }; 2290a590b1dSMark Brown 2300a590b1dSMark Brown static struct snd_soc_dapm_route audio_paths[] = { 2310a590b1dSMark Brown { "Headphone", NULL, "HPOUT1L" }, 2320a590b1dSMark Brown { "Headphone", NULL, "HPOUT1R" }, 2338f103167SMark Brown 2348f103167SMark Brown { "AMIC", NULL, "MICBIAS1" }, /* Default for AMICBIAS jumper */ 2358f103167SMark Brown { "IN1LN", NULL, "AMIC" }, 2368f103167SMark Brown 2378f103167SMark Brown { "DMIC", NULL, "MICBIAS2" }, /* Default for DMICBIAS jumper */ 2388f103167SMark Brown { "DMIC1DAT", NULL, "DMIC" }, 2398f103167SMark Brown { "DMIC2DAT", NULL, "DMIC" }, 24068a02db4SMark Brown 24168a02db4SMark Brown { "AIF2CLK", NULL, "Baseband Clock" }, 2420a590b1dSMark Brown }; 2430a590b1dSMark Brown 244f2e2026cSMark Brown static struct snd_soc_jack littlemill_headset; 245f2e2026cSMark Brown 2460a590b1dSMark Brown static int littlemill_late_probe(struct snd_soc_card *card) 2470a590b1dSMark Brown { 248f2e2026cSMark Brown struct snd_soc_codec *codec = card->rtd[0].codec; 2490cbe4b36SMark Brown struct snd_soc_dai *aif1_dai = card->rtd[0].codec_dai; 2500cbe4b36SMark Brown struct snd_soc_dai *aif2_dai = card->rtd[1].cpu_dai; 2510a590b1dSMark Brown int ret; 2520a590b1dSMark Brown 2530cbe4b36SMark Brown ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, 2540cbe4b36SMark Brown 32768, SND_SOC_CLOCK_IN); 2550cbe4b36SMark Brown if (ret < 0) 2560cbe4b36SMark Brown return ret; 2570cbe4b36SMark Brown 2580cbe4b36SMark Brown ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2, 2590a590b1dSMark Brown 32768, SND_SOC_CLOCK_IN); 2600a590b1dSMark Brown if (ret < 0) 2610a590b1dSMark Brown return ret; 2620a590b1dSMark Brown 263f2e2026cSMark Brown ret = snd_soc_jack_new(codec, "Headset", 264f2e2026cSMark Brown SND_JACK_HEADSET | SND_JACK_MECHANICAL | 265f2e2026cSMark Brown SND_JACK_BTN_0 | SND_JACK_BTN_1 | 266f2e2026cSMark Brown SND_JACK_BTN_2 | SND_JACK_BTN_3 | 267f2e2026cSMark Brown SND_JACK_BTN_4 | SND_JACK_BTN_5, 268f2e2026cSMark Brown &littlemill_headset); 269f2e2026cSMark Brown if (ret) 270f2e2026cSMark Brown return ret; 271f2e2026cSMark Brown 272f2e2026cSMark Brown /* This will check device compatibility itself */ 27398869f68SMark Brown wm8958_mic_detect(codec, &littlemill_headset, NULL, NULL, NULL, NULL); 274f2e2026cSMark Brown 275654a28c9SMark Brown /* As will this */ 276654a28c9SMark Brown wm8994_mic_detect(codec, &littlemill_headset, 1); 277654a28c9SMark Brown 2780a590b1dSMark Brown return 0; 2790a590b1dSMark Brown } 2800a590b1dSMark Brown 2810a590b1dSMark Brown static struct snd_soc_card littlemill = { 2820a590b1dSMark Brown .name = "Littlemill", 283095d79dcSAxel Lin .owner = THIS_MODULE, 2840a590b1dSMark Brown .dai_link = littlemill_dai, 2850a590b1dSMark Brown .num_links = ARRAY_SIZE(littlemill_dai), 2860a590b1dSMark Brown 2870a590b1dSMark Brown .set_bias_level = littlemill_set_bias_level, 2880a590b1dSMark Brown .set_bias_level_post = littlemill_set_bias_level_post, 2890a590b1dSMark Brown 29031a2239aSMark Brown .controls = controls, 29131a2239aSMark Brown .num_controls = ARRAY_SIZE(controls), 2920a590b1dSMark Brown .dapm_widgets = widgets, 2930a590b1dSMark Brown .num_dapm_widgets = ARRAY_SIZE(widgets), 2940a590b1dSMark Brown .dapm_routes = audio_paths, 2950a590b1dSMark Brown .num_dapm_routes = ARRAY_SIZE(audio_paths), 2960a590b1dSMark Brown 2970a590b1dSMark Brown .late_probe = littlemill_late_probe, 2980a590b1dSMark Brown }; 2990a590b1dSMark Brown 300*fdca21adSBill Pemberton static int littlemill_probe(struct platform_device *pdev) 3010a590b1dSMark Brown { 3020a590b1dSMark Brown struct snd_soc_card *card = &littlemill; 3030a590b1dSMark Brown int ret; 3040a590b1dSMark Brown 3050a590b1dSMark Brown card->dev = &pdev->dev; 3060a590b1dSMark Brown 3070a590b1dSMark Brown ret = snd_soc_register_card(card); 3080a590b1dSMark Brown if (ret) { 3090a590b1dSMark Brown dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", 3100a590b1dSMark Brown ret); 3110a590b1dSMark Brown return ret; 3120a590b1dSMark Brown } 3130a590b1dSMark Brown 3140a590b1dSMark Brown return 0; 3150a590b1dSMark Brown } 3160a590b1dSMark Brown 317*fdca21adSBill Pemberton static int littlemill_remove(struct platform_device *pdev) 3180a590b1dSMark Brown { 3190a590b1dSMark Brown struct snd_soc_card *card = platform_get_drvdata(pdev); 3200a590b1dSMark Brown 3210a590b1dSMark Brown snd_soc_unregister_card(card); 3220a590b1dSMark Brown 3230a590b1dSMark Brown return 0; 3240a590b1dSMark Brown } 3250a590b1dSMark Brown 3260a590b1dSMark Brown static struct platform_driver littlemill_driver = { 3270a590b1dSMark Brown .driver = { 3280a590b1dSMark Brown .name = "littlemill", 3290a590b1dSMark Brown .owner = THIS_MODULE, 3300a590b1dSMark Brown .pm = &snd_soc_pm_ops, 3310a590b1dSMark Brown }, 3320a590b1dSMark Brown .probe = littlemill_probe, 333*fdca21adSBill Pemberton .remove = littlemill_remove, 3340a590b1dSMark Brown }; 3350a590b1dSMark Brown 3360a590b1dSMark Brown module_platform_driver(littlemill_driver); 3370a590b1dSMark Brown 3380a590b1dSMark Brown MODULE_DESCRIPTION("Littlemill audio support"); 3390a590b1dSMark Brown MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 3400a590b1dSMark Brown MODULE_LICENSE("GPL"); 3410a590b1dSMark Brown MODULE_ALIAS("platform:littlemill"); 342