10026c551SKuninori Morimoto // SPDX-License-Identifier: GPL-2.0 20026c551SKuninori Morimoto // 30026c551SKuninori Morimoto // ALSA SoC driver for Migo-R 40026c551SKuninori Morimoto // 50026c551SKuninori Morimoto // Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> 69f5b64b7SGuennadi Liakhovetski 7f4fd58d6SGuennadi Liakhovetski #include <linux/clkdev.h> 89f5b64b7SGuennadi Liakhovetski #include <linux/device.h> 99f5b64b7SGuennadi Liakhovetski #include <linux/firmware.h> 109f5b64b7SGuennadi Liakhovetski #include <linux/module.h> 119f5b64b7SGuennadi Liakhovetski 129f5b64b7SGuennadi Liakhovetski #include <asm/clock.h> 139f5b64b7SGuennadi Liakhovetski 149f5b64b7SGuennadi Liakhovetski #include <cpu/sh7722.h> 159f5b64b7SGuennadi Liakhovetski 169f5b64b7SGuennadi Liakhovetski #include <sound/core.h> 179f5b64b7SGuennadi Liakhovetski #include <sound/pcm.h> 189f5b64b7SGuennadi Liakhovetski #include <sound/soc.h> 199f5b64b7SGuennadi Liakhovetski 209f5b64b7SGuennadi Liakhovetski #include "../codecs/wm8978.h" 219f5b64b7SGuennadi Liakhovetski #include "siu.h" 229f5b64b7SGuennadi Liakhovetski 239f5b64b7SGuennadi Liakhovetski /* Default 8000Hz sampling frequency */ 249f5b64b7SGuennadi Liakhovetski static unsigned long codec_freq = 8000 * 512; 259f5b64b7SGuennadi Liakhovetski 269f5b64b7SGuennadi Liakhovetski static unsigned int use_count; 279f5b64b7SGuennadi Liakhovetski 289f5b64b7SGuennadi Liakhovetski /* External clock, sourced from the codec at the SIUMCKB pin */ 299f5b64b7SGuennadi Liakhovetski static unsigned long siumckb_recalc(struct clk *clk) 309f5b64b7SGuennadi Liakhovetski { 319f5b64b7SGuennadi Liakhovetski return codec_freq; 329f5b64b7SGuennadi Liakhovetski } 339f5b64b7SGuennadi Liakhovetski 34c8587193SGuennadi Liakhovetski static struct sh_clk_ops siumckb_clk_ops = { 359f5b64b7SGuennadi Liakhovetski .recalc = siumckb_recalc, 369f5b64b7SGuennadi Liakhovetski }; 379f5b64b7SGuennadi Liakhovetski 389f5b64b7SGuennadi Liakhovetski static struct clk siumckb_clk = { 399f5b64b7SGuennadi Liakhovetski .ops = &siumckb_clk_ops, 409f5b64b7SGuennadi Liakhovetski .rate = 0, /* initialised at run-time */ 419f5b64b7SGuennadi Liakhovetski }; 429f5b64b7SGuennadi Liakhovetski 43cbfa5184SGuennadi Liakhovetski static struct clk_lookup *siumckb_lookup; 44cbfa5184SGuennadi Liakhovetski 459f5b64b7SGuennadi Liakhovetski static int migor_hw_params(struct snd_pcm_substream *substream, 469f5b64b7SGuennadi Liakhovetski struct snd_pcm_hw_params *params) 479f5b64b7SGuennadi Liakhovetski { 489f5b64b7SGuennadi Liakhovetski struct snd_soc_pcm_runtime *rtd = substream->private_data; 49f0fba2adSLiam Girdwood struct snd_soc_dai *codec_dai = rtd->codec_dai; 509f5b64b7SGuennadi Liakhovetski int ret; 519f5b64b7SGuennadi Liakhovetski unsigned int rate = params_rate(params); 529f5b64b7SGuennadi Liakhovetski 539f5b64b7SGuennadi Liakhovetski ret = snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 13000000, 549f5b64b7SGuennadi Liakhovetski SND_SOC_CLOCK_IN); 559f5b64b7SGuennadi Liakhovetski if (ret < 0) 569f5b64b7SGuennadi Liakhovetski return ret; 579f5b64b7SGuennadi Liakhovetski 589f5b64b7SGuennadi Liakhovetski ret = snd_soc_dai_set_clkdiv(codec_dai, WM8978_OPCLKRATE, rate * 512); 599f5b64b7SGuennadi Liakhovetski if (ret < 0) 609f5b64b7SGuennadi Liakhovetski return ret; 619f5b64b7SGuennadi Liakhovetski 629f5b64b7SGuennadi Liakhovetski codec_freq = rate * 512; 639f5b64b7SGuennadi Liakhovetski /* 649f5b64b7SGuennadi Liakhovetski * This propagates the parent frequency change to children and 659f5b64b7SGuennadi Liakhovetski * recalculates the frequency table 669f5b64b7SGuennadi Liakhovetski */ 679f5b64b7SGuennadi Liakhovetski clk_set_rate(&siumckb_clk, codec_freq); 689f5b64b7SGuennadi Liakhovetski dev_dbg(codec_dai->dev, "%s: configure %luHz\n", __func__, codec_freq); 699f5b64b7SGuennadi Liakhovetski 70f0fba2adSLiam Girdwood ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, SIU_CLKB_EXT, 719f5b64b7SGuennadi Liakhovetski codec_freq / 2, SND_SOC_CLOCK_IN); 729f5b64b7SGuennadi Liakhovetski 739f5b64b7SGuennadi Liakhovetski if (!ret) 749f5b64b7SGuennadi Liakhovetski use_count++; 759f5b64b7SGuennadi Liakhovetski 769f5b64b7SGuennadi Liakhovetski return ret; 779f5b64b7SGuennadi Liakhovetski } 789f5b64b7SGuennadi Liakhovetski 799f5b64b7SGuennadi Liakhovetski static int migor_hw_free(struct snd_pcm_substream *substream) 809f5b64b7SGuennadi Liakhovetski { 819f5b64b7SGuennadi Liakhovetski struct snd_soc_pcm_runtime *rtd = substream->private_data; 82f0fba2adSLiam Girdwood struct snd_soc_dai *codec_dai = rtd->codec_dai; 839f5b64b7SGuennadi Liakhovetski 849f5b64b7SGuennadi Liakhovetski if (use_count) { 859f5b64b7SGuennadi Liakhovetski use_count--; 869f5b64b7SGuennadi Liakhovetski 879f5b64b7SGuennadi Liakhovetski if (!use_count) 889f5b64b7SGuennadi Liakhovetski snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 0, 899f5b64b7SGuennadi Liakhovetski SND_SOC_CLOCK_IN); 909f5b64b7SGuennadi Liakhovetski } else { 919f5b64b7SGuennadi Liakhovetski dev_dbg(codec_dai->dev, "Unbalanced hw_free!\n"); 929f5b64b7SGuennadi Liakhovetski } 939f5b64b7SGuennadi Liakhovetski 949f5b64b7SGuennadi Liakhovetski return 0; 959f5b64b7SGuennadi Liakhovetski } 969f5b64b7SGuennadi Liakhovetski 97a46d0592SBhumika Goyal static const struct snd_soc_ops migor_dai_ops = { 989f5b64b7SGuennadi Liakhovetski .hw_params = migor_hw_params, 999f5b64b7SGuennadi Liakhovetski .hw_free = migor_hw_free, 1009f5b64b7SGuennadi Liakhovetski }; 1019f5b64b7SGuennadi Liakhovetski 1029f5b64b7SGuennadi Liakhovetski static const struct snd_soc_dapm_widget migor_dapm_widgets[] = { 1039f5b64b7SGuennadi Liakhovetski SND_SOC_DAPM_HP("Headphone", NULL), 1049f5b64b7SGuennadi Liakhovetski SND_SOC_DAPM_MIC("Onboard Microphone", NULL), 1059f5b64b7SGuennadi Liakhovetski SND_SOC_DAPM_MIC("External Microphone", NULL), 1069f5b64b7SGuennadi Liakhovetski }; 1079f5b64b7SGuennadi Liakhovetski 1089f5b64b7SGuennadi Liakhovetski static const struct snd_soc_dapm_route audio_map[] = { 1099f5b64b7SGuennadi Liakhovetski /* Headphone output connected to LHP/RHP, enable OUT4 for VMID */ 1109f5b64b7SGuennadi Liakhovetski { "Headphone", NULL, "OUT4 VMID" }, 1119f5b64b7SGuennadi Liakhovetski { "OUT4 VMID", NULL, "LHP" }, 1129f5b64b7SGuennadi Liakhovetski { "OUT4 VMID", NULL, "RHP" }, 1139f5b64b7SGuennadi Liakhovetski 1149f5b64b7SGuennadi Liakhovetski /* On-board microphone */ 1159f5b64b7SGuennadi Liakhovetski { "RMICN", NULL, "Mic Bias" }, 1169f5b64b7SGuennadi Liakhovetski { "RMICP", NULL, "Mic Bias" }, 1179f5b64b7SGuennadi Liakhovetski { "Mic Bias", NULL, "Onboard Microphone" }, 1189f5b64b7SGuennadi Liakhovetski 1199f5b64b7SGuennadi Liakhovetski /* External microphone */ 1209f5b64b7SGuennadi Liakhovetski { "LMICN", NULL, "Mic Bias" }, 1219f5b64b7SGuennadi Liakhovetski { "LMICP", NULL, "Mic Bias" }, 1229f5b64b7SGuennadi Liakhovetski { "Mic Bias", NULL, "External Microphone" }, 1239f5b64b7SGuennadi Liakhovetski }; 1249f5b64b7SGuennadi Liakhovetski 1259f5b64b7SGuennadi Liakhovetski /* migor digital audio interface glue - connects codec <--> CPU */ 1264f209c51SKuninori Morimoto SND_SOC_DAILINK_DEFS(wm8978, 1274f209c51SKuninori Morimoto DAILINK_COMP_ARRAY(COMP_CPU("siu-pcm-audio")), 1284f209c51SKuninori Morimoto DAILINK_COMP_ARRAY(COMP_CODEC("wm8978.0-001a", "wm8978-hifi")), 1294f209c51SKuninori Morimoto DAILINK_COMP_ARRAY(COMP_PLATFORM("siu-pcm-audio"))); 1304f209c51SKuninori Morimoto 1319f5b64b7SGuennadi Liakhovetski static struct snd_soc_dai_link migor_dai = { 1329f5b64b7SGuennadi Liakhovetski .name = "wm8978", 1339f5b64b7SGuennadi Liakhovetski .stream_name = "WM8978", 1349cb2a25cSLars-Peter Clausen .dai_fmt = SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_I2S | 1359cb2a25cSLars-Peter Clausen SND_SOC_DAIFMT_CBS_CFS, 1369f5b64b7SGuennadi Liakhovetski .ops = &migor_dai_ops, 1374f209c51SKuninori Morimoto SND_SOC_DAILINK_REG(wm8978), 1389f5b64b7SGuennadi Liakhovetski }; 1399f5b64b7SGuennadi Liakhovetski 1409f5b64b7SGuennadi Liakhovetski /* migor audio machine driver */ 1419f5b64b7SGuennadi Liakhovetski static struct snd_soc_card snd_soc_migor = { 1429f5b64b7SGuennadi Liakhovetski .name = "Migo-R", 1434a7042e5SAxel Lin .owner = THIS_MODULE, 1449f5b64b7SGuennadi Liakhovetski .dai_link = &migor_dai, 1459f5b64b7SGuennadi Liakhovetski .num_links = 1, 14623a735ccSLars-Peter Clausen 14723a735ccSLars-Peter Clausen .dapm_widgets = migor_dapm_widgets, 14823a735ccSLars-Peter Clausen .num_dapm_widgets = ARRAY_SIZE(migor_dapm_widgets), 14923a735ccSLars-Peter Clausen .dapm_routes = audio_map, 15023a735ccSLars-Peter Clausen .num_dapm_routes = ARRAY_SIZE(audio_map), 1519f5b64b7SGuennadi Liakhovetski }; 1529f5b64b7SGuennadi Liakhovetski 1539f5b64b7SGuennadi Liakhovetski static struct platform_device *migor_snd_device; 1549f5b64b7SGuennadi Liakhovetski 1559f5b64b7SGuennadi Liakhovetski static int __init migor_init(void) 1569f5b64b7SGuennadi Liakhovetski { 1579f5b64b7SGuennadi Liakhovetski int ret; 1589f5b64b7SGuennadi Liakhovetski 1599f5b64b7SGuennadi Liakhovetski ret = clk_register(&siumckb_clk); 1609f5b64b7SGuennadi Liakhovetski if (ret < 0) 1619f5b64b7SGuennadi Liakhovetski return ret; 1629f5b64b7SGuennadi Liakhovetski 163d76a4476SRussell King siumckb_lookup = clkdev_create(&siumckb_clk, "siumckb_clk", NULL); 164cbfa5184SGuennadi Liakhovetski if (!siumckb_lookup) { 165cbfa5184SGuennadi Liakhovetski ret = -ENOMEM; 166cbfa5184SGuennadi Liakhovetski goto eclkdevalloc; 167cbfa5184SGuennadi Liakhovetski } 168cbfa5184SGuennadi Liakhovetski 1699f5b64b7SGuennadi Liakhovetski /* Port number used on this machine: port B */ 1709f5b64b7SGuennadi Liakhovetski migor_snd_device = platform_device_alloc("soc-audio", 1); 1719f5b64b7SGuennadi Liakhovetski if (!migor_snd_device) { 1729f5b64b7SGuennadi Liakhovetski ret = -ENOMEM; 1739f5b64b7SGuennadi Liakhovetski goto epdevalloc; 1749f5b64b7SGuennadi Liakhovetski } 1759f5b64b7SGuennadi Liakhovetski 176f0fba2adSLiam Girdwood platform_set_drvdata(migor_snd_device, &snd_soc_migor); 1779f5b64b7SGuennadi Liakhovetski 1789f5b64b7SGuennadi Liakhovetski ret = platform_device_add(migor_snd_device); 1799f5b64b7SGuennadi Liakhovetski if (ret) 1809f5b64b7SGuennadi Liakhovetski goto epdevadd; 1819f5b64b7SGuennadi Liakhovetski 1829f5b64b7SGuennadi Liakhovetski return 0; 1839f5b64b7SGuennadi Liakhovetski 1849f5b64b7SGuennadi Liakhovetski epdevadd: 1859f5b64b7SGuennadi Liakhovetski platform_device_put(migor_snd_device); 1869f5b64b7SGuennadi Liakhovetski epdevalloc: 187cbfa5184SGuennadi Liakhovetski clkdev_drop(siumckb_lookup); 188cbfa5184SGuennadi Liakhovetski eclkdevalloc: 1899f5b64b7SGuennadi Liakhovetski clk_unregister(&siumckb_clk); 1909f5b64b7SGuennadi Liakhovetski return ret; 1919f5b64b7SGuennadi Liakhovetski } 1929f5b64b7SGuennadi Liakhovetski 1939f5b64b7SGuennadi Liakhovetski static void __exit migor_exit(void) 1949f5b64b7SGuennadi Liakhovetski { 195cbfa5184SGuennadi Liakhovetski clkdev_drop(siumckb_lookup); 1969f5b64b7SGuennadi Liakhovetski clk_unregister(&siumckb_clk); 1979f5b64b7SGuennadi Liakhovetski platform_device_unregister(migor_snd_device); 1989f5b64b7SGuennadi Liakhovetski } 1999f5b64b7SGuennadi Liakhovetski 2009f5b64b7SGuennadi Liakhovetski module_init(migor_init); 2019f5b64b7SGuennadi Liakhovetski module_exit(migor_exit); 2029f5b64b7SGuennadi Liakhovetski 2039f5b64b7SGuennadi Liakhovetski MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); 2049f5b64b7SGuennadi Liakhovetski MODULE_DESCRIPTION("ALSA SoC Migor"); 2059f5b64b7SGuennadi Liakhovetski MODULE_LICENSE("GPL v2"); 206