AM3358 >> C/C++
移植PCM5102A音效驅動程式
參考資訊：
1. Sitara_Linux_Audio_DAC_Example
arch/arm/boot/dts/am335x-bonegreen-wireless.dts
am33xx_pinmux: pinmux@44e10800 {
...
mcasp0_pins: mcasp0_pins {
pinctrl-single,pins = <
0x190 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* mcasp0_aclkx */
0x194 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* mcasp0_fsx*/
0x198 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* mcasp0_axr0 */
>;
};
diff
From 1250f7b96688bdc5cdc4bc9def37ba669efeb9c1 Mon Sep 17 00:00:00 2001
From: Josh Elliott <jelliott@ti.com>
Date: Fri, 16 May 2014 05:12:56 -0500
Subject: [PATCH] pcm5102a complete
---
arch/arm/boot/dts/am335x-bone.dts | 40 +++++++++++++++++++
sound/soc/codecs/Kconfig | 4 ++
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/pcm5102a.c | 80 +++++++++++++++++++++++++++++++++++++
sound/soc/davinci/Kconfig | 8 ++++
sound/soc/davinci/davinci-evm.c | 54 +++++++++++++++++++++++++
6 files changed, 188 insertions(+)
create mode 100644 sound/soc/codecs/pcm5102a.c
diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
index 0d63348..6c83e25 100644
--- a/arch/arm/boot/dts/am335x-bone.dts
+++ b/arch/arm/boot/dts/am335x-bone.dts
@@ -19,3 +19,43 @@
&mmc1 {
vmmc-supply = <&ldo3_reg>;
};
+
+&am33xx_pinmux {
+ mcasp0_pins: mcasp0_pins {
+ pinctrl-single,pins = <
+ 0x190 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* mcasp0_aclkx */
+ 0x194 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* mcasp0_fsx*/
+ 0x198 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* mcasp0_axr0 */
+ >;
+ };
+};
+
+&mcasp0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&mcasp0_pins>;
+ status = "okay";
+ op-mode = <0>; /* MCASP_IIS_MODE */
+ tdm-slots = <2>;
+ /* 16 serializer */
+ serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */
+ 1 0 0 0
+ >;
+ tx-num-evt = <32>;
+ rx-num-evt = <32>;
+};
+
+/ {
+
+ pcm5102a: pcm5102a {
+ compatible = "ti,pcm5102a";
+ };
+
+ sound {
+ compatible = "ti,pcm5102a-evm-audio";
+ ti,model = "TI PCM5102A";
+ ti,audio-codec = <&pcm5102a>;
+ ti,mcasp-controller = <&mcasp0>;
+ ti,codec-clock-rate = <24000000>;
+ };
+
+};
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 590cf10..73cd8d0 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -59,6 +59,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_PCM1681 if I2C
select SND_SOC_PCM1792A if SPI_MASTER
select SND_SOC_PCM3008
+ select SND_SOC_PCM5102A
select SND_SOC_RT5631 if I2C
select SND_SOC_RT5640 if I2C
select SND_SOC_SGTL5000 if I2C
@@ -312,6 +313,9 @@ config SND_SOC_PCM1792A
config SND_SOC_PCM3008
tristate
+config SND_SOC_PCM5102A
+ tristate
+
config SND_SOC_RT5631
tristate
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 23f8042..461050f 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -46,6 +46,7 @@ snd-soc-hdmi-codec-objs := hdmi.o
snd-soc-pcm1681-objs := pcm1681.o
snd-soc-pcm1792a-codec-objs := pcm1792a.o
snd-soc-pcm3008-objs := pcm3008.o
+snd-soc-pcm5102a-objs := pcm5102a.o
snd-soc-rt5631-objs := rt5631.o
snd-soc-rt5640-objs := rt5640.o
snd-soc-sgtl5000-objs := sgtl5000.o
@@ -180,6 +181,7 @@ obj-$(CONFIG_SND_SOC_HDMI_CODEC) += snd-soc-hdmi-codec.o
obj-$(CONFIG_SND_SOC_PCM1681) += snd-soc-pcm1681.o
obj-$(CONFIG_SND_SOC_PCM1792A) += snd-soc-pcm1792a-codec.o
obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.o
+obj-$(CONFIG_SND_SOC_PCM5102A) += snd-soc-pcm5102a.o
obj-$(CONFIG_SND_SOC_RT5631) += snd-soc-rt5631.o
obj-$(CONFIG_SND_SOC_RT5640) += snd-soc-rt5640.o
obj-$(CONFIG_SND_SOC_SGTL5000) += snd-soc-sgtl5000.o
diff --git a/sound/soc/codecs/pcm5102a.c b/sound/soc/codecs/pcm5102a.c
new file mode 100644
index 0000000..9a2059b
--- /dev/null
+++ b/sound/soc/codecs/pcm5102a.c
@@ -0,0 +1,80 @@
+/*
+ * ALSA SoC PCM5102a driver
+ *
+ * Author: Josh Elliott, <jelliott@ti.com>
+ * Copyright: Copyright: (C) 2014 Texas Instruments
+ *
+ * Based on sound/soc/codecs/spdif_transmitter.c by Steve Chen
+ *
+ * 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/slab.h>
+#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+#include <linux/of.h>
+
+#define DRV_NAME "pcm5102a"
+
+#define RATES SNDRV_PCM_RATE_8000_96000
+#define FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
+ SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_codec_driver soc_codec_pcm5102a = {
+
+};
+
+static struct snd_soc_dai_driver pcm5102a_dai = {
+ .name = "pcm5102a-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = RATES,
+ .formats = FORMATS,
+ },
+};
+
+static int pcm5102a_probe(struct platform_device *pdev)
+{
+ printk("PCM5102a probe...\n");
+
+ return snd_soc_register_codec(&pdev->dev, &soc_codec_pcm5102a,
+ &pcm5102a_dai, 1);
+}
+
+static int pcm5102a_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_codec(&pdev->dev);
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id pcm5102a_dt_ids[] = {
+ { .compatible = "ti,pcm5102a", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, pcm5102a_dt_ids);
+#endif
+
+static struct platform_driver pcm5102a_driver = {
+ .probe = pcm5102a_probe,
+ .remove = pcm5102a_remove,
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(pcm5102a_dt_ids),
+ },
+};
+
+module_platform_driver(pcm5102a_driver);
+
+MODULE_AUTHOR("Josh Elliott <jelliott@ti.com>");
+MODULE_DESCRIPTION("PCM5102A dummy codec driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/sound/soc/davinci/Kconfig b/sound/soc/davinci/Kconfig
index c2153cf..3e11da5 100644
--- a/sound/soc/davinci/Kconfig
+++ b/sound/soc/davinci/Kconfig
@@ -26,6 +26,14 @@ config SND_AM33XX_SOC_EVM
AM335X-EVMSK, AM43XX-GP-EVM, and BeagelBone with AudioCape boards have
this setup.
+config SND_AM33XX_SOC_PCM5102A
+ tristate "SoC Audio support for PCM5102A on BeagleBoneBlack"
+ depends on SND_DAVINCI_SOC && SOC_AM33XX
+ select SND_SOC_PCM5102A
+ help
+ Say Y or M if you want to add support for SoC audio on AM33XX
+ BeagleBoneBlack board using McASP and PCM5102A.
+
config SND_AM43XX_SOC_EPOS_EVM
tristate "SoC Audio for the AM43XX and TLV320AIC3111 based board"
depends on SND_DAVINCI_SOC && SOC_AM43XX
diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c
index 14f4049..2deafac 100644
--- a/sound/soc/davinci/davinci-evm.c
+++ b/sound/soc/davinci/davinci-evm.c
@@ -57,7 +57,9 @@ static int evm_startup(struct snd_pcm_substream *substream)
struct snd_soc_card *soc_card = rtd->codec->card;
struct clk *mclk = ((struct snd_soc_card_drvdata_davinci *)
snd_soc_card_get_drvdata(soc_card))->mclk;
+
if (mclk)
+ printk("MCLK: %d", clk_prepare_enable(mclk));
return clk_prepare_enable(mclk);
return 0;
@@ -93,6 +95,8 @@ static int evm_hw_params(struct snd_pcm_substream *substream,
unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
snd_soc_card_get_drvdata(soc_card))->sysclk;
+ printk("EVM HW PARAMS\n");
+
/* set the codec system clock */
ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
if (ret < 0)
@@ -159,6 +163,36 @@ static int evm_tda998x_hw_params(struct snd_pcm_substream *substream,
return ret;
}
+static int pcm5102a_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 *cpu_dai = rtd->cpu_dai;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_card *soc_card = codec->card;
+ struct platform_device *pdev = to_platform_device(soc_card->dev);
+ unsigned int bclk_freq = evm_get_bclk(params);
+ unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
+ snd_soc_card_get_drvdata(soc_card))->sysclk;
+ int ret;
+
+ ret = snd_soc_dai_set_clkdiv(cpu_dai, 1, sysclk/bclk_freq);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "can't set CPU DAI clock divider %d\n",
+ ret);
+ return ret;
+ }
+
+ printk("PCM5102a hw params\n");
+ printk("sysclk=%d\n", sysclk);
+ printk("bclk_freq=%d\n", bclk_freq);
+ ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
+ if (ret < 0)
+ return ret;
+
+ return ret;
+}
+
static int evm_slave_codec_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
@@ -214,6 +248,13 @@ static struct snd_soc_ops dra7xx_ops = {
.hw_params = evm_slave_codec_hw_params,
};
+static struct snd_soc_ops pcm5102a_ops = {
+ .startup = evm_startup,
+ .shutdown = evm_shutdown,
+ .hw_params = pcm5102a_hw_params,
+};
+
+
/* davinci-evm machine dapm widgets */
static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
@@ -584,6 +625,15 @@ static struct snd_soc_card da850_snd_soc_card = {
* The structs are used as place holders. They will be completely
* filled with data from dt node.
*/
+static struct snd_soc_dai_link evm_dai_pcm5102a = {
+ .name = "PCM5102A",
+ .stream_name = "Playback",
+ .codec_dai_name = "pcm5102a-hifi",
+ .ops = &pcm5102a_ops,
+ .dai_fmt = (SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_IB_NF),
+};
+
static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
.name = "TLV320AIC3X",
.stream_name = "AIC3X",
@@ -627,6 +677,10 @@ static struct snd_soc_dai_link evm_dai_tlv320aic3111 = {
static const struct of_device_id davinci_evm_dt_ids[] = {
{
+ .compatible = "ti,pcm5102a-evm-audio",
+ .data = &evm_dai_pcm5102a,
+ },
+ {
.compatible = "ti,da830-evm-audio",
.data = &evm_dai_tlv320aic3x,
},
--
1.7.9.5
腳位
| BBGW | PCM5102A |
|---|---|
| P9.32(SPI1_SCLK, MCASP0_ACLKX) | BCK |
| P9.29(SPI1_D0, MCASP0_FSX) | LRCK |
| P9.30(SPI1_D1, MCASP0_AXR0) | DIN |
menuconfig
dmesg
完成
