diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/soc/ti/davinci-evm.c | 537 |
1 files changed, 537 insertions, 0 deletions
diff --git a/sound/soc/ti/davinci-evm.c b/sound/soc/ti/davinci-evm.c new file mode 100644 index 000000000..105e56ab9 --- /dev/null +++ b/sound/soc/ti/davinci-evm.c @@ -0,0 +1,537 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * ASoC driver for TI DAVINCI EVM platform + * + * Author: Vladimir Barinov, <vbarinov@embeddedalley.com> + * Copyright: (C) 2007 MontaVista Software, Inc., <source@mvista.com> + */ + +#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> + +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 = asoc_substream_to_rtd(substream); + 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 = asoc_substream_to_rtd(substream); + 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 = asoc_substream_to_rtd(substream); + struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + 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 && ret != -ENOTSUPP) + 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 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(&card->dapm, "MONO_LOUT"); + snd_soc_dapm_nc_pin(&card->dapm, "HPLCOM"); + snd_soc_dapm_nc_pin(&card->dapm, "HPRCOM"); + + return 0; +} + +/* davinci-evm digital audio interface glue - connects codec <--> CPU */ +SND_SOC_DAILINK_DEFS(dm6446, + DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp")), + DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-001b", + "tlv320aic3x-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp"))); + +static struct snd_soc_dai_link dm6446_evm_dai = { + .name = "TLV320AIC3X", + .stream_name = "AIC3X", + .init = evm_aic3x_init, + .ops = &evm_ops, + .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | + SND_SOC_DAIFMT_IB_NF, + SND_SOC_DAILINK_REG(dm6446), +}; + +SND_SOC_DAILINK_DEFS(dm355, + DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp.1")), + DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-001b", + "tlv320aic3x-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp.1"))); + +static struct snd_soc_dai_link dm355_evm_dai = { + .name = "TLV320AIC3X", + .stream_name = "AIC3X", + .init = evm_aic3x_init, + .ops = &evm_ops, + .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | + SND_SOC_DAIFMT_IB_NF, + SND_SOC_DAILINK_REG(dm355), +}; + +#ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC +SND_SOC_DAILINK_DEFS(dm365, + DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp")), + DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018", + "tlv320aic3x-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp"))); +#elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC) +SND_SOC_DAILINK_DEFS(dm365, + DAILINK_COMP_ARRAY(COMP_CPU("davinci-vcif")), + DAILINK_COMP_ARRAY(COMP_CODEC("cq93vc-codec", "cq93vc-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-vcif"))); +#endif + +static struct snd_soc_dai_link dm365_evm_dai = { +#ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC + .name = "TLV320AIC3X", + .stream_name = "AIC3X", + .init = evm_aic3x_init, + .ops = &evm_ops, + .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | + SND_SOC_DAIFMT_IB_NF, + SND_SOC_DAILINK_REG(dm365), +#elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC) + .name = "Voice Codec - CQ93VC", + .stream_name = "CQ93", + SND_SOC_DAILINK_REG(dm365), +#endif +}; + +SND_SOC_DAILINK_DEFS(dm6467_aic3x, + DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.0")), + DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.0-001a", + "tlv320aic3x-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.0"))); + +SND_SOC_DAILINK_DEFS(dm6467_spdif, + DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.1")), + DAILINK_COMP_ARRAY(COMP_CODEC("spdif_dit", "dit-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.1"))); + +static struct snd_soc_dai_link dm6467_evm_dai[] = { + { + .name = "TLV320AIC3X", + .stream_name = "AIC3X", + .init = evm_aic3x_init, + .ops = &evm_ops, + .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | + SND_SOC_DAIFMT_IB_NF, + SND_SOC_DAILINK_REG(dm6467_aic3x), + }, + { + .name = "McASP", + .stream_name = "spdif", + .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | + SND_SOC_DAIFMT_IB_NF, + SND_SOC_DAILINK_REG(dm6467_spdif), + }, +}; + +SND_SOC_DAILINK_DEFS(da830, + DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.1")), + DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018", + "tlv320aic3x-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.1"))); + +static struct snd_soc_dai_link da830_evm_dai = { + .name = "TLV320AIC3X", + .stream_name = "AIC3X", + .init = evm_aic3x_init, + .ops = &evm_ops, + .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | + SND_SOC_DAIFMT_IB_NF, + SND_SOC_DAILINK_REG(da830), +}; + +SND_SOC_DAILINK_DEFS(da850, + DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.0")), + DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018", + "tlv320aic3x-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.0"))); + +static struct snd_soc_dai_link da850_evm_dai = { + .name = "TLV320AIC3X", + .stream_name = "AIC3X", + .init = evm_aic3x_init, + .ops = &evm_ops, + .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | + SND_SOC_DAIFMT_IB_NF, + SND_SOC_DAILINK_REG(da850), +}; + +/* 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. + */ +SND_SOC_DAILINK_DEFS(evm, + DAILINK_COMP_ARRAY(COMP_EMPTY()), + DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic3x-hifi")), + DAILINK_COMP_ARRAY(COMP_EMPTY())); + +static struct snd_soc_dai_link evm_dai_tlv320aic3x = { + .name = "TLV320AIC3X", + .stream_name = "AIC3X", + .ops = &evm_ops, + .init = evm_aic3x_init, + .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | + SND_SOC_DAIFMT_IB_NF, + SND_SOC_DAILINK_REG(evm), +}; + +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; + struct snd_soc_dai_link *dai; + struct snd_soc_card_drvdata_davinci *drvdata = NULL; + struct clk *mclk; + int ret = 0; + + match = of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev); + if (!match) { + dev_err(&pdev->dev, "Error: No device match found\n"); + return -ENODEV; + } + + dai = (struct snd_soc_dai_link *) match->data; + + evm_soc_card.dai_link = dai; + + dai->codecs->of_node = of_parse_phandle(np, "ti,audio-codec", 0); + if (!dai->codecs->of_node) + return -EINVAL; + + dai->cpus->of_node = of_parse_phandle(np, "ti,mcasp-controller", 0); + if (!dai->cpus->of_node) + return -EINVAL; + + dai->platforms->of_node = dai->cpus->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", + .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"); |