ASoC: rt5660: add rt5660 codec driver

BugLink: http://bugs.launchpad.net/bugs/1657674

This is the initial codec driver for rt5660
Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
(cherry picked from commit 2b26dd4c)
Signed-off-by: Shrirang Bagul <shrirang.bagul@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

Documentation/devicetree/bindings/sound/rt5660.txt

+RT5660 audio CODEC
+
+This device supports I2C only.
+
+Required properties:
+
+- compatible : "realtek,rt5660".
+
+- reg : The I2C address of the device.
+
+Optional properties:
+
+- clocks: The phandle of the master clock to the CODEC
+- clock-names: Should be "mclk"
+
+- realtek,in1-differential
+- realtek,in3-differential
+  Boolean. Indicate MIC1/3 input are differential, rather than single-ended.
+
+- realtek,poweroff-in-suspend
+  Boolean. If the codec will be powered off in suspend, the resume should be
+  added delay time for waiting codec power ready.
+
+- realtek,dmic1-data-pin
+  0: dmic1 is not used
+  1: using GPIO2 pin as dmic1 data pin
+  2: using IN1P pin as dmic1 data pin
+
+Pins on the device (for linking into audio routes) for RT5660:
+
+  * DMIC L1
+  * DMIC R1
+  * IN1P
+  * IN1N
+  * IN2P
+  * IN3P
+  * IN3N
+  * SPO
+  * LOUTL
+  * LOUTR
+
+Example:
+
+rt5660 {
+	compatible = "realtek,rt5660";
+	reg = <0x1c>;
+};

include/sound/rt5660.h

+/*
+ * linux/sound/rt5660.h -- Platform data for RT5660
+ *
+ * Copyright 2016 Realtek Semiconductor Corp.
+ * Author: Oder Chiou <oder_chiou@realtek.com>
+ *
+ * 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.
+ */
+
+#ifndef __LINUX_SND_RT5660_H
+#define __LINUX_SND_RT5660_H
+
+enum rt5660_dmic1_data_pin {
+	RT5660_DMIC1_NULL,
+	RT5660_DMIC1_DATA_GPIO2,
+	RT5660_DMIC1_DATA_IN1P,
+};
+
+struct rt5660_platform_data {
+	/* IN1 & IN3 can optionally be differential */
+	bool in1_diff;
+	bool in3_diff;
+	bool use_ldo2;
+	bool poweroff_codec_in_suspend;
+
+	enum rt5660_dmic1_data_pin dmic1_data_pin;
+};
+
+#endif

sound/soc/codecs/Kconfig

@@ -93,6 +93,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_RT5640 if I2C
 	select SND_SOC_RT5645 if I2C
 	select SND_SOC_RT5651 if I2C
+	select SND_SOC_RT5660 if I2C
 	select SND_SOC_RT5670 if I2C
 	select SND_SOC_RT5677 if I2C && SPI_MASTER
 	select SND_SOC_SGTL5000 if I2C
@@ -526,11 +527,13 @@ config SND_SOC_RL6231
 	default y if SND_SOC_RT5640=y
 	default y if SND_SOC_RT5645=y
 	default y if SND_SOC_RT5651=y
+	default y if SND_SOC_RT5660=y
 	default y if SND_SOC_RT5670=y
 	default y if SND_SOC_RT5677=y
 	default m if SND_SOC_RT5640=m
 	default m if SND_SOC_RT5645=m
 	default m if SND_SOC_RT5651=m
+	default m if SND_SOC_RT5660=m
 	default m if SND_SOC_RT5670=m
 	default m if SND_SOC_RT5677=m
 
@@ -562,6 +565,9 @@ config SND_SOC_RT5645
 config SND_SOC_RT5651
 	tristate
 
+config SND_SOC_RT5660
+	tristate
+
 config SND_SOC_RT5670
 	tristate
 

sound/soc/codecs/Makefile

@@ -89,6 +89,7 @@ snd-soc-rt5631-objs := rt5631.o
 snd-soc-rt5640-objs := rt5640.o
 snd-soc-rt5645-objs := rt5645.o
 snd-soc-rt5651-objs := rt5651.o
+snd-soc-rt5660-objs := rt5660.o
 snd-soc-rt5670-objs := rt5670.o
 snd-soc-rt5677-objs := rt5677.o
 snd-soc-rt5677-spi-objs := rt5677-spi.o
@@ -284,6 +285,7 @@ obj-$(CONFIG_SND_SOC_RT5631)	+= snd-soc-rt5631.o
 obj-$(CONFIG_SND_SOC_RT5640)	+= snd-soc-rt5640.o
 obj-$(CONFIG_SND_SOC_RT5645)	+= snd-soc-rt5645.o
 obj-$(CONFIG_SND_SOC_RT5651)	+= snd-soc-rt5651.o
+obj-$(CONFIG_SND_SOC_RT5660)	+= snd-soc-rt5660.o
 obj-$(CONFIG_SND_SOC_RT5670)	+= snd-soc-rt5670.o
 obj-$(CONFIG_SND_SOC_RT5677)	+= snd-soc-rt5677.o
 obj-$(CONFIG_SND_SOC_RT5677_SPI)	+= snd-soc-rt5677-spi.o