19f5b64b7SGuennadi Liakhovetski /* 29f5b64b7SGuennadi Liakhovetski * ALSA SoC driver for Migo-R 39f5b64b7SGuennadi Liakhovetski * 49f5b64b7SGuennadi Liakhovetski * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> 59f5b64b7SGuennadi Liakhovetski * 69f5b64b7SGuennadi Liakhovetski * This program is free software; you can redistribute it and/or modify 79f5b64b7SGuennadi Liakhovetski * it under the terms of the GNU General Public License version 2 as 89f5b64b7SGuennadi Liakhovetski * published by the Free Software Foundation. 99f5b64b7SGuennadi Liakhovetski */ 109f5b64b7SGuennadi Liakhovetski 119f5b64b7SGuennadi Liakhovetski #include <linux/device.h> 129f5b64b7SGuennadi Liakhovetski #include <linux/firmware.h> 139f5b64b7SGuennadi Liakhovetski #include <linux/module.h> 149f5b64b7SGuennadi Liakhovetski 159f5b64b7SGuennadi Liakhovetski #include <asm/clock.h> 169f5b64b7SGuennadi Liakhovetski 179f5b64b7SGuennadi Liakhovetski #include <cpu/sh7722.h> 189f5b64b7SGuennadi Liakhovetski 199f5b64b7SGuennadi Liakhovetski #include <sound/core.h> 209f5b64b7SGuennadi Liakhovetski #include <sound/pcm.h> 219f5b64b7SGuennadi Liakhovetski #include <sound/soc.h> 229f5b64b7SGuennadi Liakhovetski #include <sound/soc-dapm.h> 239f5b64b7SGuennadi Liakhovetski 249f5b64b7SGuennadi Liakhovetski #include "../codecs/wm8978.h" 259f5b64b7SGuennadi Liakhovetski #include "siu.h" 269f5b64b7SGuennadi Liakhovetski 279f5b64b7SGuennadi Liakhovetski /* Default 8000Hz sampling frequency */ 289f5b64b7SGuennadi Liakhovetski static unsigned long codec_freq = 8000 * 512; 299f5b64b7SGuennadi Liakhovetski 309f5b64b7SGuennadi Liakhovetski static unsigned int use_count; 319f5b64b7SGuennadi Liakhovetski 329f5b64b7SGuennadi Liakhovetski /* External clock, sourced from the codec at the SIUMCKB pin */ 339f5b64b7SGuennadi Liakhovetski static unsigned long siumckb_recalc(struct clk *clk) 349f5b64b7SGuennadi Liakhovetski { 359f5b64b7SGuennadi Liakhovetski return codec_freq; 369f5b64b7SGuennadi Liakhovetski } 379f5b64b7SGuennadi Liakhovetski 389f5b64b7SGuennadi Liakhovetski static struct clk_ops siumckb_clk_ops = { 399f5b64b7SGuennadi Liakhovetski .recalc = siumckb_recalc, 409f5b64b7SGuennadi Liakhovetski }; 419f5b64b7SGuennadi Liakhovetski 429f5b64b7SGuennadi Liakhovetski static struct clk siumckb_clk = { 439f5b64b7SGuennadi Liakhovetski .name = "siumckb_clk", 449f5b64b7SGuennadi Liakhovetski .id = -1, 459f5b64b7SGuennadi Liakhovetski .ops = &siumckb_clk_ops, 469f5b64b7SGuennadi Liakhovetski .rate = 0, /* initialised at run-time */ 479f5b64b7SGuennadi Liakhovetski }; 489f5b64b7SGuennadi Liakhovetski 499f5b64b7SGuennadi Liakhovetski static int migor_hw_params(struct snd_pcm_substream *substream, 509f5b64b7SGuennadi Liakhovetski struct snd_pcm_hw_params *params) 519f5b64b7SGuennadi Liakhovetski { 529f5b64b7SGuennadi Liakhovetski struct snd_soc_pcm_runtime *rtd = substream->private_data; 539f5b64b7SGuennadi Liakhovetski struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; 549f5b64b7SGuennadi Liakhovetski int ret; 559f5b64b7SGuennadi Liakhovetski unsigned int rate = params_rate(params); 569f5b64b7SGuennadi Liakhovetski 579f5b64b7SGuennadi Liakhovetski ret = snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 13000000, 589f5b64b7SGuennadi Liakhovetski SND_SOC_CLOCK_IN); 599f5b64b7SGuennadi Liakhovetski if (ret < 0) 609f5b64b7SGuennadi Liakhovetski return ret; 619f5b64b7SGuennadi Liakhovetski 629f5b64b7SGuennadi Liakhovetski ret = snd_soc_dai_set_clkdiv(codec_dai, WM8978_DACCLK, 8); 639f5b64b7SGuennadi Liakhovetski if (ret < 0) 649f5b64b7SGuennadi Liakhovetski return ret; 659f5b64b7SGuennadi Liakhovetski 669f5b64b7SGuennadi Liakhovetski ret = snd_soc_dai_set_clkdiv(codec_dai, WM8978_OPCLKRATE, rate * 512); 679f5b64b7SGuennadi Liakhovetski if (ret < 0) 689f5b64b7SGuennadi Liakhovetski return ret; 699f5b64b7SGuennadi Liakhovetski 709f5b64b7SGuennadi Liakhovetski ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_NB_IF | 719f5b64b7SGuennadi Liakhovetski SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS); 729f5b64b7SGuennadi Liakhovetski if (ret < 0) 739f5b64b7SGuennadi Liakhovetski return ret; 749f5b64b7SGuennadi Liakhovetski 759f5b64b7SGuennadi Liakhovetski ret = snd_soc_dai_set_fmt(rtd->dai->cpu_dai, SND_SOC_DAIFMT_NB_IF | 769f5b64b7SGuennadi Liakhovetski SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS); 779f5b64b7SGuennadi Liakhovetski if (ret < 0) 789f5b64b7SGuennadi Liakhovetski return ret; 799f5b64b7SGuennadi Liakhovetski 809f5b64b7SGuennadi Liakhovetski codec_freq = rate * 512; 819f5b64b7SGuennadi Liakhovetski /* 829f5b64b7SGuennadi Liakhovetski * This propagates the parent frequency change to children and 839f5b64b7SGuennadi Liakhovetski * recalculates the frequency table 849f5b64b7SGuennadi Liakhovetski */ 859f5b64b7SGuennadi Liakhovetski clk_set_rate(&siumckb_clk, codec_freq); 869f5b64b7SGuennadi Liakhovetski dev_dbg(codec_dai->dev, "%s: configure %luHz\n", __func__, codec_freq); 879f5b64b7SGuennadi Liakhovetski 889f5b64b7SGuennadi Liakhovetski ret = snd_soc_dai_set_sysclk(rtd->dai->cpu_dai, SIU_CLKB_EXT, 899f5b64b7SGuennadi Liakhovetski codec_freq / 2, SND_SOC_CLOCK_IN); 909f5b64b7SGuennadi Liakhovetski 919f5b64b7SGuennadi Liakhovetski if (!ret) 929f5b64b7SGuennadi Liakhovetski use_count++; 939f5b64b7SGuennadi Liakhovetski 949f5b64b7SGuennadi Liakhovetski return ret; 959f5b64b7SGuennadi Liakhovetski } 969f5b64b7SGuennadi Liakhovetski 979f5b64b7SGuennadi Liakhovetski static int migor_hw_free(struct snd_pcm_substream *substream) 989f5b64b7SGuennadi Liakhovetski { 999f5b64b7SGuennadi Liakhovetski struct snd_soc_pcm_runtime *rtd = substream->private_data; 1009f5b64b7SGuennadi Liakhovetski struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; 1019f5b64b7SGuennadi Liakhovetski 1029f5b64b7SGuennadi Liakhovetski if (use_count) { 1039f5b64b7SGuennadi Liakhovetski use_count--; 1049f5b64b7SGuennadi Liakhovetski 1059f5b64b7SGuennadi Liakhovetski if (!use_count) 1069f5b64b7SGuennadi Liakhovetski snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 0, 1079f5b64b7SGuennadi Liakhovetski SND_SOC_CLOCK_IN); 1089f5b64b7SGuennadi Liakhovetski } else { 1099f5b64b7SGuennadi Liakhovetski dev_dbg(codec_dai->dev, "Unbalanced hw_free!\n"); 1109f5b64b7SGuennadi Liakhovetski } 1119f5b64b7SGuennadi Liakhovetski 1129f5b64b7SGuennadi Liakhovetski return 0; 1139f5b64b7SGuennadi Liakhovetski } 1149f5b64b7SGuennadi Liakhovetski 1159f5b64b7SGuennadi Liakhovetski static struct snd_soc_ops migor_dai_ops = { 1169f5b64b7SGuennadi Liakhovetski .hw_params = migor_hw_params, 1179f5b64b7SGuennadi Liakhovetski .hw_free = migor_hw_free, 1189f5b64b7SGuennadi Liakhovetski }; 1199f5b64b7SGuennadi Liakhovetski 1209f5b64b7SGuennadi Liakhovetski static const struct snd_soc_dapm_widget migor_dapm_widgets[] = { 1219f5b64b7SGuennadi Liakhovetski SND_SOC_DAPM_HP("Headphone", NULL), 1229f5b64b7SGuennadi Liakhovetski SND_SOC_DAPM_MIC("Onboard Microphone", NULL), 1239f5b64b7SGuennadi Liakhovetski SND_SOC_DAPM_MIC("External Microphone", NULL), 1249f5b64b7SGuennadi Liakhovetski }; 1259f5b64b7SGuennadi Liakhovetski 1269f5b64b7SGuennadi Liakhovetski static const struct snd_soc_dapm_route audio_map[] = { 1279f5b64b7SGuennadi Liakhovetski /* Headphone output connected to LHP/RHP, enable OUT4 for VMID */ 1289f5b64b7SGuennadi Liakhovetski { "Headphone", NULL, "OUT4 VMID" }, 1299f5b64b7SGuennadi Liakhovetski { "OUT4 VMID", NULL, "LHP" }, 1309f5b64b7SGuennadi Liakhovetski { "OUT4 VMID", NULL, "RHP" }, 1319f5b64b7SGuennadi Liakhovetski 1329f5b64b7SGuennadi Liakhovetski /* On-board microphone */ 1339f5b64b7SGuennadi Liakhovetski { "RMICN", NULL, "Mic Bias" }, 1349f5b64b7SGuennadi Liakhovetski { "RMICP", NULL, "Mic Bias" }, 1359f5b64b7SGuennadi Liakhovetski { "Mic Bias", NULL, "Onboard Microphone" }, 1369f5b64b7SGuennadi Liakhovetski 1379f5b64b7SGuennadi Liakhovetski /* External microphone */ 1389f5b64b7SGuennadi Liakhovetski { "LMICN", NULL, "Mic Bias" }, 1399f5b64b7SGuennadi Liakhovetski { "LMICP", NULL, "Mic Bias" }, 1409f5b64b7SGuennadi Liakhovetski { "Mic Bias", NULL, "External Microphone" }, 1419f5b64b7SGuennadi Liakhovetski }; 1429f5b64b7SGuennadi Liakhovetski 1439f5b64b7SGuennadi Liakhovetski static int migor_dai_init(struct snd_soc_codec *codec) 1449f5b64b7SGuennadi Liakhovetski { 1459f5b64b7SGuennadi Liakhovetski snd_soc_dapm_new_controls(codec, migor_dapm_widgets, 1469f5b64b7SGuennadi Liakhovetski ARRAY_SIZE(migor_dapm_widgets)); 1479f5b64b7SGuennadi Liakhovetski 1489f5b64b7SGuennadi Liakhovetski snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 1499f5b64b7SGuennadi Liakhovetski 1509f5b64b7SGuennadi Liakhovetski return 0; 1519f5b64b7SGuennadi Liakhovetski } 1529f5b64b7SGuennadi Liakhovetski 1539f5b64b7SGuennadi Liakhovetski /* migor digital audio interface glue - connects codec <--> CPU */ 1549f5b64b7SGuennadi Liakhovetski static struct snd_soc_dai_link migor_dai = { 1559f5b64b7SGuennadi Liakhovetski .name = "wm8978", 1569f5b64b7SGuennadi Liakhovetski .stream_name = "WM8978", 1579f5b64b7SGuennadi Liakhovetski .cpu_dai = &siu_i2s_dai, 1589f5b64b7SGuennadi Liakhovetski .codec_dai = &wm8978_dai, 1599f5b64b7SGuennadi Liakhovetski .ops = &migor_dai_ops, 1609f5b64b7SGuennadi Liakhovetski .init = migor_dai_init, 1619f5b64b7SGuennadi Liakhovetski }; 1629f5b64b7SGuennadi Liakhovetski 1639f5b64b7SGuennadi Liakhovetski /* migor audio machine driver */ 1649f5b64b7SGuennadi Liakhovetski static struct snd_soc_card snd_soc_migor = { 1659f5b64b7SGuennadi Liakhovetski .name = "Migo-R", 1669f5b64b7SGuennadi Liakhovetski .platform = &siu_platform, 1679f5b64b7SGuennadi Liakhovetski .dai_link = &migor_dai, 1689f5b64b7SGuennadi Liakhovetski .num_links = 1, 1699f5b64b7SGuennadi Liakhovetski }; 1709f5b64b7SGuennadi Liakhovetski 1719f5b64b7SGuennadi Liakhovetski /* migor audio subsystem */ 1729f5b64b7SGuennadi Liakhovetski static struct snd_soc_device migor_snd_devdata = { 1739f5b64b7SGuennadi Liakhovetski .card = &snd_soc_migor, 1749f5b64b7SGuennadi Liakhovetski .codec_dev = &soc_codec_dev_wm8978, 1759f5b64b7SGuennadi Liakhovetski }; 1769f5b64b7SGuennadi Liakhovetski 1779f5b64b7SGuennadi Liakhovetski static struct platform_device *migor_snd_device; 1789f5b64b7SGuennadi Liakhovetski 1799f5b64b7SGuennadi Liakhovetski static int __init migor_init(void) 1809f5b64b7SGuennadi Liakhovetski { 1819f5b64b7SGuennadi Liakhovetski int ret; 1829f5b64b7SGuennadi Liakhovetski 1839f5b64b7SGuennadi Liakhovetski ret = clk_register(&siumckb_clk); 1849f5b64b7SGuennadi Liakhovetski if (ret < 0) 1859f5b64b7SGuennadi Liakhovetski return ret; 1869f5b64b7SGuennadi Liakhovetski 1879f5b64b7SGuennadi Liakhovetski /* Port number used on this machine: port B */ 1889f5b64b7SGuennadi Liakhovetski migor_snd_device = platform_device_alloc("soc-audio", 1); 1899f5b64b7SGuennadi Liakhovetski if (!migor_snd_device) { 1909f5b64b7SGuennadi Liakhovetski ret = -ENOMEM; 1919f5b64b7SGuennadi Liakhovetski goto epdevalloc; 1929f5b64b7SGuennadi Liakhovetski } 1939f5b64b7SGuennadi Liakhovetski 1949f5b64b7SGuennadi Liakhovetski platform_set_drvdata(migor_snd_device, &migor_snd_devdata); 1959f5b64b7SGuennadi Liakhovetski 1969f5b64b7SGuennadi Liakhovetski migor_snd_devdata.dev = &migor_snd_device->dev; 1979f5b64b7SGuennadi Liakhovetski 1989f5b64b7SGuennadi Liakhovetski ret = platform_device_add(migor_snd_device); 1999f5b64b7SGuennadi Liakhovetski if (ret) 2009f5b64b7SGuennadi Liakhovetski goto epdevadd; 2019f5b64b7SGuennadi Liakhovetski 2029f5b64b7SGuennadi Liakhovetski return 0; 2039f5b64b7SGuennadi Liakhovetski 2049f5b64b7SGuennadi Liakhovetski epdevadd: 2059f5b64b7SGuennadi Liakhovetski platform_device_put(migor_snd_device); 2069f5b64b7SGuennadi Liakhovetski epdevalloc: 2079f5b64b7SGuennadi Liakhovetski clk_unregister(&siumckb_clk); 2089f5b64b7SGuennadi Liakhovetski return ret; 2099f5b64b7SGuennadi Liakhovetski } 2109f5b64b7SGuennadi Liakhovetski 2119f5b64b7SGuennadi Liakhovetski static void __exit migor_exit(void) 2129f5b64b7SGuennadi Liakhovetski { 2139f5b64b7SGuennadi Liakhovetski clk_unregister(&siumckb_clk); 2149f5b64b7SGuennadi Liakhovetski platform_device_unregister(migor_snd_device); 2159f5b64b7SGuennadi Liakhovetski } 2169f5b64b7SGuennadi Liakhovetski 2179f5b64b7SGuennadi Liakhovetski module_init(migor_init); 2189f5b64b7SGuennadi Liakhovetski module_exit(migor_exit); 2199f5b64b7SGuennadi Liakhovetski 2209f5b64b7SGuennadi Liakhovetski MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); 2219f5b64b7SGuennadi Liakhovetski MODULE_DESCRIPTION("ALSA SoC Migor"); 2229f5b64b7SGuennadi Liakhovetski MODULE_LICENSE("GPL v2"); 223