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-rw-r--r--sound/soc/ti/davinci-evm.c511
1 files changed, 511 insertions, 0 deletions
diff --git a/sound/soc/ti/davinci-evm.c b/sound/soc/ti/davinci-evm.c
new file mode 100644
index 000000000000..4869d6311510
--- /dev/null
+++ b/sound/soc/ti/davinci-evm.c
@@ -0,0 +1,511 @@
+/*
+ * 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>
+
+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 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 */
+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_SOC_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_SOC_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;
+ 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->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",
+ .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");