new file mode 100644
@@ -0,0 +1,58 @@
+* Texas Instruments SoC audio setups with TLV320AIC3X Codec
+
+Required properties:
+- compatible : "ti,da830-evm-audio" : forDM365/DA8xx/OMAPL1x/AM33xx
+- ti,model : The user-visible name of this sound complex.
+- ti,audio-codec : The phandle of the TLV320AIC3x audio codec
+- ti,mcasp-controller : The phandle of the McASP controller
+- ti,codec-clock-rate : The Codec Clock rate (in Hz) applied to the Codec
+- ti,audio-routing : A list of the connections between audio components.
+ Each entry is a pair of strings, the first being the connection's sink,
+ the second being the connection's source. Valid names for sources and
+ sinks are the codec's pins, and the jacks on the board:
+
+ TLV320AIC3X pins:
+
+ * LLOUT
+ * RLOUT
+ * MONO_LOUT
+ * HPLOUT
+ * HPROUT
+ * HPLCOM
+ * HPRCOM
+ * MIC3L
+ * MIC3R
+ * LINE1L
+ * LINE2L
+ * LINE1R
+ * LINE2R
+
+ Board connectors:
+
+ * Headphone Jack
+ * Line Out
+ * Mic Jack
+ * Line In
+
+
+Example:
+
+sound {
+ compatible = "ti,da830-evm-audio";
+ ti,model = "DA830 EVM";
+ ti,audio-codec = <&tlv320aic3x>;
+ ti,mcasp-controller = <&mcasp1>;
+ ti,codec-clock-rate = <12000000>;
+ ti,audio-routing =
+ "Headphone Jack", "HPLOUT",
+ "Headphone Jack", "HPROUT",
+ "Line Out", "LLOUT",
+ "Line Out", "RLOUT",
+ "MIC3L", "Mic Bias 2V",
+ "MIC3R", "Mic Bias 2V",
+ "Mic Bias 2V", "Mic Jack",
+ "LINE1L", "Line In",
+ "LINE2L", "Line In",
+ "LINE1R", "Line In",
+ "LINE2R", "Line In";
+};
@@ -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>
@@ -23,6 +24,8 @@
#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"
@@ -121,13 +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");
@@ -312,6 +324,98 @@ static struct snd_soc_card da850_snd_soc_card = {
.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 = snd_soc_register_card(&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)
@@ -320,6 +424,13 @@ 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 (of_have_populated_dt())
+ return platform_driver_register(&davinci_evm_driver);
+
if (machine_is_davinci_evm()) {
evm_snd_dev_data = &dm6446_snd_soc_card_evm;
index = 0;
@@ -355,6 +466,11 @@ static int __init evm_init(void)
static void __exit evm_exit(void)
{
+ if (of_have_populated_dt()) {
+ platform_driver_unregister(&davinci_evm_driver);
+ return;
+ }
+
platform_device_unregister(evm_snd_device);
}