| /* |
| * ASoC driver for TI DAVINCI EVM platform |
| * |
| * Author: Vladimir Barinov, <vbarinov@embeddedalley.com> |
| * Copyright: (C) 2007 MontaVista Software, Inc., <source@mvista.com> |
| * |
| * 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 <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/timer.h> |
| #include <linux/interrupt.h> |
| #include <linux/platform_device.h> |
| #include <linux/i2c.h> |
| #include <linux/of_platform.h> |
| #include <linux/clk.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/soc.h> |
| |
| #include <asm/dma.h> |
| #include <asm/mach-types.h> |
| |
| #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 int davinci_evm_remove(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = platform_get_drvdata(pdev); |
| |
| snd_soc_unregister_card(card); |
| |
| return 0; |
| } |
| |
| static struct platform_driver davinci_evm_driver = { |
| .probe = davinci_evm_probe, |
| .remove = davinci_evm_remove, |
| .driver = { |
| .name = "davinci_evm", |
| .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"); |