mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 22:23:27 +00:00
254 lines
7.1 KiB
Diff
254 lines
7.1 KiB
Diff
From af9ef849e8700327b807361344427a43c38e823a Mon Sep 17 00:00:00 2001
|
|
From: "Hebbar, Gururaja" <gururaja.hebbar@ti.com>
|
|
Date: Tue, 31 Jul 2012 21:25:38 +0530
|
|
Subject: [PATCH 212/752] ASoC: davinci-evm: Add device tree binding
|
|
|
|
Device tree support for Davinci Machine driver
|
|
|
|
When the board boots with device tree, the driver will receive card,
|
|
codec, dai interface details (like the card name, DAPM routing map,
|
|
phandle for the audio components described in the dts file, codec mclk
|
|
speed). The card will be set up based on this information. Since the
|
|
routing is provided via DT we can mark the card fully routed so core
|
|
can take care of disconnecting the unused pins.
|
|
|
|
Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
|
|
Signed-off-by: Darren Etheridge <detheridge@ti.com>
|
|
Signed-off-by: Jyri Sarha <jsarha@ti.com>
|
|
---
|
|
.../bindings/sound/davinci-evm-audio.txt | 58 ++++++++++
|
|
sound/soc/davinci/davinci-evm.c | 120 +++++++++++++++++++-
|
|
2 files changed, 176 insertions(+), 2 deletions(-)
|
|
create mode 100644 Documentation/devicetree/bindings/sound/davinci-evm-audio.txt
|
|
|
|
--- /dev/null
|
|
+++ b/Documentation/devicetree/bindings/sound/davinci-evm-audio.txt
|
|
@@ -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";
|
|
+};
|
|
--- 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>
|
|
@@ -23,6 +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
|
|
{
|
|
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
|
|
.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);
|
|
}
|
|
|