odroid-c2:Support HiFi-Shield-2 sound card driver.

Change-Id: I7fbf8a926460ec222cbb9e36fdfb72f891c09fcf

Documentation/devicetree/bindings/sound/pcm512x.txt

@@ -0,0 +1,52 @@
+PCM512x audio CODECs
+
+These devices support both I2C and SPI (configured with pin strapping
+on the board).
+
+Required properties:
+
+  - compatible : One of "ti,pcm5121", "ti,pcm5122", "ti,pcm5141" or
+                 "ti,pcm5142"
+
+  - reg : the I2C address of the device for I2C, the chip select
+          number for SPI.
+
+  - AVDD-supply, DVDD-supply, and CPVDD-supply : power supplies for the
+    device, as covered in bindings/regulator/regulator.txt
+
+Optional properties:
+
+  - clocks : A clock specifier for the clock connected as SCLK.  If this
+    is absent the device will be configured to clock from BCLK.  If pll-in
+    and pll-out are specified in addition to a clock, the device is
+    configured to accept clock input on a specified gpio pin.
+
+  - pll-in, pll-out : gpio pins used to connect the pll using <1>
+    through <6>.  The device will be configured for clock input on the
+    given pll-in pin and PLL output on the given pll-out pin.  An
+    external connection from the pll-out pin to the SCLK pin is assumed.
+
+Examples:
+
+	pcm5122: pcm5122@4c {
+		compatible = "ti,pcm5122";
+		reg = <0x4c>;
+
+		AVDD-supply = <&reg_3v3_analog>;
+		DVDD-supply = <&reg_1v8>;
+		CPVDD-supply = <&reg_3v3>;
+	};
+
+
+	pcm5142: pcm5142@4c {
+		compatible = "ti,pcm5142";
+		reg = <0x4c>;
+
+		AVDD-supply = <&reg_3v3_analog>;
+		DVDD-supply = <&reg_1v8>;
+		CPVDD-supply = <&reg_3v3>;
+
+		clocks = <&sck>;
+		pll-in = <3>;
+		pll-out = <6>;
+	};

arch/arm64/boot/dts/meson64_odroidc2.dts

@@ -647,6 +647,14 @@
 			sound-dai = <&pcm5102_codec>;
 		};
 	};
+
+	odroid_dac2{
+		compatible = "sound_card, odroid_dac2";
+		aml,sound_card = "ODROID-DAC2";
+		pinctrl-names = "odroid_i2s";
+		pinctrl-0 = <&audio_pins>;
+		status = "okay";
+	};
 	/* END OF AUDIO board specific */
 
 	aml_sensor0: aml-sensor@0 {

arch/arm64/configs/odroidc2_defconfig

@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/arm64 3.14.65 Kernel Configuration
+# Linux/arm64 3.14.77 Kernel Configuration
 #
 CONFIG_ARM64=y
 CONFIG_ARM64_HAS_SG_CHAIN=y
@@ -3285,9 +3285,13 @@ CONFIG_SND_AML_M8_SOC=y
 # CONFIG_SND_AML_M8 is not set
 CONFIG_SND_ODROID_HDMI=y
 CONFIG_SND_ODROID_DAC=m
+CONFIG_SND_ODROID_DAC2=m
 # CONFIG_SND_AML_G9TV is not set
 CONFIG_SND_SOC_I2C_AND_SPI=y
 CONFIG_SND_SOC_PCM5102=m
+CONFIG_SND_SOC_PCM512x=m
+CONFIG_SND_SOC_PCM512x_I2C=m
+# CONFIG_SND_SOC_PCM512x_SPI is not set
 # CONFIG_SND_SIMPLE_CARD is not set
 # CONFIG_SOUND_PRIME is not set
 CONFIG_AC97_BUS=m

sound/soc/aml/m8/Kconfig

@@ -20,6 +20,11 @@ menuconfig SND_ODROID_DAC
 	depends on SND_AML_M8_SOC
 	select SND_SOC_PCM5102
 
+menuconfig SND_ODROID_DAC2
+	tristate "ODROID HiFi-Shield2(pcm5242) Support"
+	depends on SND_AML_M8_SOC
+	select SND_SOC_PCM512x_I2C
+
 menuconfig SND_AML_G9TV
 	tristate "AML-SND-G9TV Board"
 	depends on SND_AML_M8_SOC && SWITCH

sound/soc/aml/m8/Makefile

@@ -27,8 +27,10 @@ obj-$(CONFIG_SND_AML_M8) += snd-soc-aml-m8.o
 #ODROID Machine support
 snd-soc-odroid-hdmi-objs := odroid_hdmi.o
 snd-soc-odroid-dac-objs := odroid_dac.o
+snd-soc-odroid-dac2-objs := odroid_dac2.o
 obj-$(CONFIG_SND_ODROID_HDMI) += snd-soc-odroid-hdmi.o
 obj-$(CONFIG_SND_ODROID_DAC) += snd-soc-odroid-dac.o
+obj-$(CONFIG_SND_ODROID_DAC2) += snd-soc-odroid-dac2.o
 
 #AML G9TV Machine support
 snd-soc-aml-g9tv-objs := aml_g9tv.o

sound/soc/aml/m8/odroid_dac2.c

@@ -0,0 +1,217 @@
+/*
+ * sound/soc/aml/m8/aml_m8.c
+ *
+ * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+*/
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/timer.h>
+#include <linux/workqueue.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+/* #include <sound/soc-dapm.h> */
+#include <sound/jack.h>
+#include <linux/switch.h>
+/* #include <linux/amlogic/saradc.h> */
+#include <linux/amlogic/iomap.h>
+
+/* #include "aml_i2s_dai.h" */
+#include "aml_i2s.h"
+#include "odroid_dac2.h"
+#include "aml_audio_hw.h"
+#include <linux/amlogic/sound/audin_regs.h>
+#include <linux/of.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/amlogic/aml_gpio_consumer.h>
+#include <linux/of_gpio.h>
+#include <linux/io.h>
+/* extern struct device *spdif_dev; */
+
+#define DRV_NAME "odroid_dac2"
+
+static int dac2_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;
+	int ret;
+
+	/* set codec DAI configuration */
+	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+	SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
+	if (ret < 0)
+		return ret;
+
+	/* set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+	SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		return ret;
+
+	/* set cpu DAI clock */
+	ret = snd_soc_dai_set_sysclk(
+			cpu_dai, 0, params_rate(params)*256, SND_SOC_CLOCK_OUT);
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+static struct snd_soc_ops odroid_ops = {
+	.hw_params = dac2_hw_params,
+};
+
+static int dac2_set_bias_level(struct snd_soc_card *card,
+	struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level)
+{
+	int ret = 0;
+	struct dac2_private_data *p_dac2;
+
+	p_dac2 = snd_soc_card_get_drvdata(card);
+	if (p_dac2->bias_level == (int)level)
+		return 0;
+
+	p_dac2->bias_level = (int)level;
+	return ret;
+}
+static struct snd_soc_dai_link dac2_dai_link[] = {
+	{
+		.name = "SND_PCM5242",
+		.stream_name = "I2S",
+		.cpu_dai_name = "I2S",
+		.platform_name = "i2s_platform",
+		.codec_name = "pcm512x.1-004c",
+		.codec_dai_name = "pcm512x-hifi",
+		.ops = &odroid_ops,
+	},
+};
+
+static struct snd_soc_card aml_snd_soc_card = {
+	.driver_name = "SOC-Audio",
+	.dai_link = &dac2_dai_link[0],
+	.num_links = ARRAY_SIZE(dac2_dai_link),
+	.set_bias_level = dac2_set_bias_level,
+};
+
+static int dac2_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &aml_snd_soc_card;
+	struct dac2_private_data *p_dac2;
+	int ret = 0;
+
+#ifdef CONFIG_OF
+	p_dac2 = devm_kzalloc(&pdev->dev,
+	sizeof(struct dac2_private_data), GFP_KERNEL);
+	if (!p_dac2) {
+		dev_err(&pdev->dev, "Can't allocate dac2_private_data\n");
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	card->dev = &pdev->dev;
+	platform_set_drvdata(pdev, card);
+	snd_soc_card_set_drvdata(card, p_dac2);
+	if (!(pdev->dev.of_node)) {
+		dev_err(&pdev->dev, "Must be instantiated using device tree\n");
+		ret = -EINVAL;
+		goto err;
+	}
+	ret = of_property_read_string(pdev->dev.of_node,
+					"pinctrl-names",
+					&p_dac2->pinctrl_name);
+	p_dac2->pin_ctl =
+		devm_pinctrl_get_select(&pdev->dev, p_dac2->pinctrl_name);
+
+	ret = snd_soc_of_parse_card_name(card, "aml,sound_card");
+	if (ret)
+		goto err;
+
+	ret = snd_soc_register_card(card);
+	if (ret) {
+		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
+		ret);
+		goto err;
+	}
+	return 0;
+#endif
+
+err:
+	return ret;
+}
+
+static int dac2_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+	struct dac2_private_data *p_dac2;
+
+	p_dac2 = snd_soc_card_get_drvdata(card);
+	if (p_dac2->pin_ctl)
+		devm_pinctrl_put(p_dac2->pin_ctl);
+
+	snd_soc_unregister_card(card);
+	return 0;
+}
+
+#ifdef CONFIG_USE_OF
+static const struct of_device_id dac2_dt_match[] = {
+	{ .compatible = "sound_card, odroid_dac2", },
+	{},
+};
+#else
+#define dac2_dt_match NULL
+#endif
+
+static struct platform_driver dac2_driver = {
+	.probe  = dac2_probe,
+	.remove = dac2_remove,
+	.driver = {
+		.name = DRV_NAME,
+		.owner = THIS_MODULE,
+		.pm = &snd_soc_pm_ops,
+		.of_match_table = dac2_dt_match,
+	},
+};
+
+static int __init dac2_init(void)
+{
+	return platform_driver_register(&dac2_driver);
+}
+
+static void __exit dac2_exit(void)
+{
+	platform_driver_unregister(&dac2_driver);
+}
+
+#ifdef CONFIG_DEFERRED_MODULE_INIT
+deferred_module_init(dac2_init);
+#else
+module_init(dac2_init);
+#endif
+module_exit(dac2_exit);
+
+/* Module information */
+MODULE_AUTHOR("Hardkernel, Inc.");
+MODULE_DESCRIPTION("ODROID HiFi Shield-2 Asoc driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);

sound/soc/aml/m8/odroid_dac2.h

@@ -0,0 +1,31 @@
+/*
+ * sound/soc/aml/m8/aml_m8.h
+ *
+ * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+*/
+
+#ifndef AML_M8_H
+#define AML_M8_H
+
+#include <sound/soc.h>
+#include <linux/gpio/consumer.h>
+struct dac2_private_data {
+	int bias_level;
+	const char *pinctrl_name;
+	struct pinctrl *pin_ctl;
+	void *data;
+};
+
+#endif
+

sound/soc/codecs/Kconfig

@@ -135,6 +135,8 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_DUMMY_CODEC
 	select SND_SOC_PCM2BT
 	select SND_SOC_PCM5102
+	select SND_SOC_PCM512x_I2C if I2C
+	select SND_SOC_PCM512x_SPI if SPI_MASTER
         help
           Normally ASoC codec drivers are only built if a machine driver which
           uses them is also built since they are only usable with a machine
@@ -566,3 +568,18 @@ config SND_SOC_PCM2BT
 
 config SND_SOC_PCM5102
 	tristate
+
+config SND_SOC_PCM512x
+	tristate
+
+config SND_SOC_PCM512x_I2C
+	tristate "Texas Instruments PCM512x CODECs - I2C"
+	depends on I2C
+	select SND_SOC_PCM512x
+	select REGMAP_I2C
+
+config SND_SOC_PCM512x_SPI
+	tristate "Texas Instruments PCM512x CODECs - SPI"
+	depends on SPI_MASTER
+	select SND_SOC_PCM512x
+	select REGMAP_SPI