/* * ASoC driver for TI DAVINCI EVM platform * * Author: Vladimir Barinov, * Copyright: (C) 2007 MontaVista Software, Inc., * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "davinci-pcm.h" #include "davinci-i2s.h" struct snd_soc_card_drvdata_davinci { struct clk *mclk; unsigned sysclk; }; static int evm_startup(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_card *soc_card = rtd->card; struct snd_soc_card_drvdata_davinci *drvdata = snd_soc_card_get_drvdata(soc_card); if (drvdata->mclk) return clk_prepare_enable(drvdata->mclk); return 0; } static void evm_shutdown(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_card *soc_card = rtd->card; struct snd_soc_card_drvdata_davinci *drvdata = snd_soc_card_get_drvdata(soc_card); if (drvdata->mclk) clk_disable_unprepare(drvdata->mclk); } static int evm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->codec_dai; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_card *soc_card = rtd->card; int ret = 0; unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *) snd_soc_card_get_drvdata(soc_card))->sysclk; /* set the codec system clock */ ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT); if (ret < 0) return ret; /* set the CPU system clock */ ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT); if (ret < 0) return ret; return 0; } static struct snd_soc_ops evm_ops = { .startup = evm_startup, .shutdown = evm_shutdown, .hw_params = evm_hw_params, }; /* davinci-evm machine dapm widgets */ static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = { SND_SOC_DAPM_HP("Headphone Jack", NULL), SND_SOC_DAPM_LINE("Line Out", NULL), SND_SOC_DAPM_MIC("Mic Jack", NULL), SND_SOC_DAPM_LINE("Line In", NULL), }; /* davinci-evm machine audio_mapnections to the codec pins */ static const struct snd_soc_dapm_route audio_map[] = { /* Headphone connected to HPLOUT, HPROUT */ {"Headphone Jack", NULL, "HPLOUT"}, {"Headphone Jack", NULL, "HPROUT"}, /* Line Out connected to LLOUT, RLOUT */ {"Line Out", NULL, "LLOUT"}, {"Line Out", NULL, "RLOUT"}, /* Mic connected to (MIC3L | MIC3R) */ {"MIC3L", NULL, "Mic Bias"}, {"MIC3R", NULL, "Mic Bias"}, {"Mic Bias", NULL, "Mic Jack"}, /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */ {"LINE1L", NULL, "Line In"}, {"LINE2L", NULL, "Line In"}, {"LINE1R", NULL, "Line In"}, {"LINE2R", NULL, "Line In"}, }; /* Logic for a aic3x as connected on a davinci-evm */ static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_card *card = rtd->card; struct snd_soc_codec *codec = rtd->codec; struct device_node *np = card->dev->of_node; int ret; /* Add davinci-evm specific widgets */ snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets, ARRAY_SIZE(aic3x_dapm_widgets)); if (np) { ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing"); if (ret) return ret; } else { /* Set up davinci-evm specific audio path audio_map */ snd_soc_dapm_add_routes(&card->dapm, audio_map, ARRAY_SIZE(audio_map)); } /* not connected */ snd_soc_dapm_nc_pin(&codec->dapm, "MONO_LOUT"); snd_soc_dapm_nc_pin(&codec->dapm, "HPLCOM"); snd_soc_dapm_nc_pin(&codec->dapm, "HPRCOM"); return 0; } /* davinci-evm digital audio interface glue - connects codec <--> CPU */ static struct snd_soc_dai_link dm6446_evm_dai = { .name = "TLV320AIC3X", .stream_name = "AIC3X", .cpu_dai_name = "davinci-mcbsp", .codec_dai_name = "tlv320aic3x-hifi", .codec_name = "tlv320aic3x-codec.1-001b", .platform_name = "davinci-mcbsp", .init = evm_aic3x_init, .ops = &evm_ops, .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF, }; static struct snd_soc_dai_link dm355_evm_dai = { .name = "TLV320AIC3X", .stream_name = "AIC3X", .cpu_dai_name = "davinci-mcbsp.1", .codec_dai_name = "tlv320aic3x-hifi", .codec_name = "tlv320aic3x-codec.1-001b", .platform_name = "davinci-mcbsp.1", .init = evm_aic3x_init, .ops = &evm_ops, .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF, }; static struct snd_soc_dai_link dm365_evm_dai = { #ifdef CONFIG_SND_DM365_AIC3X_CODEC .name = "TLV320AIC3X", .stream_name = "AIC3X", .cpu_dai_name = "davinci-mcbsp", .codec_dai_name = "tlv320aic3x-hifi", .codec_name = "tlv320aic3x-codec.1-0018", .platform_name = "davinci-mcbsp", .init = evm_aic3x_init, .ops = &evm_ops, .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF, #elif defined(CONFIG_SND_DM365_VOICE_CODEC) .name = "Voice Codec - CQ93VC", .stream_name = "CQ93", .cpu_dai_name = "davinci-vcif", .codec_dai_name = "cq93vc-hifi", .codec_name = "cq93vc-codec", .platform_name = "davinci-vcif", #endif }; static struct snd_soc_dai_link dm6467_evm_dai[] = { { .name = "TLV320AIC3X", .stream_name = "AIC3X", .cpu_dai_name= "davinci-mcasp.0", .codec_dai_name = "tlv320aic3x-hifi", .platform_name = "davinci-mcasp.0", .codec_name = "tlv320aic3x-codec.0-001a", .init = evm_aic3x_init, .ops = &evm_ops, .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF, }, { .name = "McASP", .stream_name = "spdif", .cpu_dai_name= "davinci-mcasp.1", .codec_dai_name = "dit-hifi", .codec_name = "spdif_dit", .platform_name = "davinci-mcasp.1", .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF, }, }; static struct snd_soc_dai_link da830_evm_dai = { .name = "TLV320AIC3X", .stream_name = "AIC3X", .cpu_dai_name = "davinci-mcasp.1", .codec_dai_name = "tlv320aic3x-hifi", .codec_name = "tlv320aic3x-codec.1-0018", .platform_name = "davinci-mcasp.1", .init = evm_aic3x_init, .ops = &evm_ops, .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF, }; static struct snd_soc_dai_link da850_evm_dai = { .name = "TLV320AIC3X", .stream_name = "AIC3X", .cpu_dai_name= "davinci-mcasp.0", .codec_dai_name = "tlv320aic3x-hifi", .codec_name = "tlv320aic3x-codec.1-0018", .platform_name = "davinci-mcasp.0", .init = evm_aic3x_init, .ops = &evm_ops, .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF, }; /* davinci dm6446 evm audio machine driver */ /* * ASP0 in DM6446 EVM is clocked by U55, as configured by * board-dm644x-evm.c using GPIOs from U18. There are six * options; here we "know" we use a 48 KHz sample rate. */ static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = { .sysclk = 12288000, }; static struct snd_soc_card dm6446_snd_soc_card_evm = { .name = "DaVinci DM6446 EVM", .owner = THIS_MODULE, .dai_link = &dm6446_evm_dai, .num_links = 1, .drvdata = &dm6446_snd_soc_card_drvdata, }; /* davinci dm355 evm audio machine driver */ /* ASP1 on DM355 EVM is clocked by an external oscillator */ static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = { .sysclk = 27000000, }; static struct snd_soc_card dm355_snd_soc_card_evm = { .name = "DaVinci DM355 EVM", .owner = THIS_MODULE, .dai_link = &dm355_evm_dai, .num_links = 1, .drvdata = &dm355_snd_soc_card_drvdata, }; /* davinci dm365 evm audio machine driver */ static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = { .sysclk = 27000000, }; static struct snd_soc_card dm365_snd_soc_card_evm = { .name = "DaVinci DM365 EVM", .owner = THIS_MODULE, .dai_link = &dm365_evm_dai, .num_links = 1, .drvdata = &dm365_snd_soc_card_drvdata, }; /* davinci dm6467 evm audio machine driver */ static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = { .sysclk = 27000000, }; static struct snd_soc_card dm6467_snd_soc_card_evm = { .name = "DaVinci DM6467 EVM", .owner = THIS_MODULE, .dai_link = dm6467_evm_dai, .num_links = ARRAY_SIZE(dm6467_evm_dai), .drvdata = &dm6467_snd_soc_card_drvdata, }; static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = { .sysclk = 24576000, }; static struct snd_soc_card da830_snd_soc_card = { .name = "DA830/OMAP-L137 EVM", .owner = THIS_MODULE, .dai_link = &da830_evm_dai, .num_links = 1, .drvdata = &da830_snd_soc_card_drvdata, }; static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = { .sysclk = 24576000, }; static struct snd_soc_card da850_snd_soc_card = { .name = "DA850/OMAP-L138 EVM", .owner = THIS_MODULE, .dai_link = &da850_evm_dai, .num_links = 1, .drvdata = &da850_snd_soc_card_drvdata, }; #if defined(CONFIG_OF) /* * The struct is used as place holder. It will be completely * filled with data from dt node. */ static struct snd_soc_dai_link evm_dai_tlv320aic3x = { .name = "TLV320AIC3X", .stream_name = "AIC3X", .codec_dai_name = "tlv320aic3x-hifi", .ops = &evm_ops, .init = evm_aic3x_init, .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF, }; static const struct of_device_id davinci_evm_dt_ids[] = { { .compatible = "ti,da830-evm-audio", .data = (void *) &evm_dai_tlv320aic3x, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids); /* davinci evm audio machine driver */ static struct snd_soc_card evm_soc_card = { .owner = THIS_MODULE, .num_links = 1, }; static int davinci_evm_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; const struct of_device_id *match = of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev); struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data; struct snd_soc_card_drvdata_davinci *drvdata = NULL; struct clk *mclk; int ret = 0; evm_soc_card.dai_link = dai; dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0); if (!dai->codec_of_node) return -EINVAL; dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0); if (!dai->cpu_of_node) return -EINVAL; dai->platform_of_node = dai->cpu_of_node; evm_soc_card.dev = &pdev->dev; ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model"); if (ret) return ret; mclk = devm_clk_get(&pdev->dev, "mclk"); if (PTR_ERR(mclk) == -EPROBE_DEFER) { return -EPROBE_DEFER; } else if (IS_ERR(mclk)) { dev_dbg(&pdev->dev, "mclk not found.\n"); mclk = NULL; } drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); if (!drvdata) return -ENOMEM; drvdata->mclk = mclk; ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk); if (ret < 0) { if (!drvdata->mclk) { dev_err(&pdev->dev, "No clock or clock rate defined.\n"); return -EINVAL; } drvdata->sysclk = clk_get_rate(drvdata->mclk); } else if (drvdata->mclk) { unsigned int requestd_rate = drvdata->sysclk; clk_set_rate(drvdata->mclk, drvdata->sysclk); drvdata->sysclk = clk_get_rate(drvdata->mclk); if (drvdata->sysclk != requestd_rate) dev_warn(&pdev->dev, "Could not get requested rate %u using %u.\n", requestd_rate, drvdata->sysclk); } snd_soc_card_set_drvdata(&evm_soc_card, drvdata); ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card); if (ret) dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); return ret; } static struct platform_driver davinci_evm_driver = { .probe = davinci_evm_probe, .driver = { .name = "davinci_evm", .owner = THIS_MODULE, .pm = &snd_soc_pm_ops, .of_match_table = of_match_ptr(davinci_evm_dt_ids), }, }; #endif static struct platform_device *evm_snd_device; static int __init evm_init(void) { struct snd_soc_card *evm_snd_dev_data; int index; int ret; /* * If dtb is there, the devices will be created dynamically. * Only register platfrom driver structure. */ #if defined(CONFIG_OF) if (of_have_populated_dt()) return platform_driver_register(&davinci_evm_driver); #endif if (machine_is_davinci_evm()) { evm_snd_dev_data = &dm6446_snd_soc_card_evm; index = 0; } else if (machine_is_davinci_dm355_evm()) { evm_snd_dev_data = &dm355_snd_soc_card_evm; index = 1; } else if (machine_is_davinci_dm365_evm()) { evm_snd_dev_data = &dm365_snd_soc_card_evm; index = 0; } else if (machine_is_davinci_dm6467_evm()) { evm_snd_dev_data = &dm6467_snd_soc_card_evm; index = 0; } else if (machine_is_davinci_da830_evm()) { evm_snd_dev_data = &da830_snd_soc_card; index = 1; } else if (machine_is_davinci_da850_evm()) { evm_snd_dev_data = &da850_snd_soc_card; index = 0; } else return -EINVAL; evm_snd_device = platform_device_alloc("soc-audio", index); if (!evm_snd_device) return -ENOMEM; platform_set_drvdata(evm_snd_device, evm_snd_dev_data); ret = platform_device_add(evm_snd_device); if (ret) platform_device_put(evm_snd_device); return ret; } static void __exit evm_exit(void) { #if defined(CONFIG_OF) if (of_have_populated_dt()) { platform_driver_unregister(&davinci_evm_driver); return; } #endif platform_device_unregister(evm_snd_device); } module_init(evm_init); module_exit(evm_exit); MODULE_AUTHOR("Vladimir Barinov"); MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver"); MODULE_LICENSE("GPL");