1 files changed, 166 insertions, 22 deletions

diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c
index fd7c45b9ed5a..623eb5e7c089 100644
--- a/sound/soc/davinci/davinci-evm.c
+++ b/sound/soc/davinci/davinci-evm.c
@@ -16,6 +16,7 @@
 #include <linux/platform_device.h>
 #include <linux/platform_data/edma.h>
 #include <linux/i2c.h>
+#include <linux/of_platform.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/soc.h>
@@ -23,10 +24,16 @@
 #include <asm/dma.h>
 #include <asm/mach-types.h>
 
+#include <linux/edma.h>
+
 #include "davinci-pcm.h"
 #include "davinci-i2s.h"
 #include "davinci-mcasp.h"
 
+struct snd_soc_card_drvdata_davinci {
+        unsigned sysclk;
+};
+
 #define AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B | \
                 SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF)
 static int evm_hw_params(struct snd_pcm_substream *substream,
@@ -35,27 +42,11 @@ static int evm_hw_params(struct snd_pcm_substream *substream,
         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_codec *codec = rtd->codec;
+        struct snd_soc_card *soc_card = codec->card;
         int ret = 0;
-        unsigned sysclk;
-
-        /* ASP1 on DM355 EVM is clocked by an external oscillator */
-        if (machine_is_davinci_dm355_evm() || machine_is_davinci_dm6467_evm() ||
-            machine_is_davinci_dm365_evm())
-                sysclk = 27000000;
-
-        /* 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.
-         */
-        else if (machine_is_davinci_evm())
-                sysclk = 12288000;
-
-        else if (machine_is_davinci_da830_evm() ||
-                                machine_is_davinci_da850_evm())
-                sysclk = 24576000;
-
-        else
-                return -EINVAL;
+        unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
+                           snd_soc_card_get_drvdata(soc_card))->sysclk;
 
         /* set codec DAI configuration */
         ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
@@ -133,13 +124,22 @@ static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
 {
         struct snd_soc_codec *codec = rtd->codec;
         struct snd_soc_dapm_context *dapm = &codec->dapm;
+        struct device_node *np = codec->card->dev->of_node;
+        int ret;
 
         /* Add davinci-evm specific widgets */
         snd_soc_dapm_new_controls(dapm, aic3x_dapm_widgets,
                                   ARRAY_SIZE(aic3x_dapm_widgets));
 
-        /* Set up davinci-evm specific audio path audio_map */
-        snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
+        if (np) {
+                ret = snd_soc_of_parse_audio_routing(codec->card,
+                                                        "ti,audio-routing");
+                if (ret)
+                        return ret;
+        } else {
+                /* Set up davinci-evm specific audio path audio_map */
+                snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
+        }
 
         /* not connected */
         snd_soc_dapm_disable_pin(dapm, "MONO_LOUT");
@@ -243,35 +243,65 @@ static struct snd_soc_dai_link da850_evm_dai = {
 };
 
 /* 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 = {
@@ -279,6 +309,11 @@ static struct snd_soc_card da830_snd_soc_card = {
         .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 = {
@@ -286,8 +321,101 @@ static struct snd_soc_card da850_snd_soc_card = {
         .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,
+};
+
+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;
+        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;
+
+        drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
+        if (!drvdata)
+                return -ENOMEM;
+
+        ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
+        if (ret < 0)
+                return -EINVAL;
+
+        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",
+                .owner  = THIS_MODULE,
+                .of_match_table = of_match_ptr(davinci_evm_dt_ids),
+        },
+};
+#endif
+
 static struct platform_device *evm_snd_device;
 
 static int __init evm_init(void)
@@ -296,6 +424,15 @@ static int __init evm_init(void)
         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;
@@ -331,6 +468,13 @@ static int __init evm_init(void)
 
 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);
 }