ASoC: wm8997: Initial CODEC driver

The wm8997 is a compact, high-performance audio hub CODEC with SLIMbus
interfacing, for smartphones, tablets and other portable audio devices
based on the Arizona platform.

This patch adds the wm8997 CODEC driver.

[Fixed some interface churn from bitrot due to the patch not going via
the MFD tree as expected -- broonie]
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/Kconfig

@@ -122,6 +122,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_WM8994 if MFD_WM8994
 	select SND_SOC_WM8995 if SND_SOC_I2C_AND_SPI
 	select SND_SOC_WM8996 if I2C
+	select SND_SOC_WM8997 if MFD_WM8997
 	select SND_SOC_WM9081 if I2C
 	select SND_SOC_WM9090 if I2C
 	select SND_SOC_WM9705 if SND_SOC_AC97_BUS
@@ -145,8 +146,10 @@ config SND_SOC_ARIZONA
 	tristate
 	default y if SND_SOC_WM5102=y
 	default y if SND_SOC_WM5110=y
+	default y if SND_SOC_WM8997=y
 	default m if SND_SOC_WM5102=m
 	default m if SND_SOC_WM5110=m
+	default m if SND_SOC_WM8997=m
 
 config SND_SOC_WM_HUBS
 	tristate
@@ -500,6 +503,9 @@ config SND_SOC_WM8995
 config SND_SOC_WM8996
 	tristate
 
+config SND_SOC_WM8997
+	tristate
+
 config SND_SOC_WM9081
 	tristate
 

sound/soc/codecs/Makefile

@@ -114,6 +114,7 @@ snd-soc-wm8991-objs := wm8991.o
 snd-soc-wm8993-objs := wm8993.o
 snd-soc-wm8994-objs := wm8994.o wm8958-dsp2.o
 snd-soc-wm8995-objs := wm8995.o
+snd-soc-wm8997-objs := wm8997.o
 snd-soc-wm9081-objs := wm9081.o
 snd-soc-wm9090-objs := wm9090.o
 snd-soc-wm9705-objs := wm9705.o
@@ -239,6 +240,7 @@ obj-$(CONFIG_SND_SOC_WM8991)	+= snd-soc-wm8991.o
 obj-$(CONFIG_SND_SOC_WM8993)	+= snd-soc-wm8993.o
 obj-$(CONFIG_SND_SOC_WM8994)	+= snd-soc-wm8994.o
 obj-$(CONFIG_SND_SOC_WM8995)	+= snd-soc-wm8995.o
+obj-$(CONFIG_SND_SOC_WM8997)	+= snd-soc-wm8997.o
 obj-$(CONFIG_SND_SOC_WM9081)	+= snd-soc-wm9081.o
 obj-$(CONFIG_SND_SOC_WM9090)	+= snd-soc-wm9090.o
 obj-$(CONFIG_SND_SOC_WM9705)	+= snd-soc-wm9705.o

sound/soc/codecs/arizona.c

@@ -200,9 +200,16 @@ int arizona_init_spk(struct snd_soc_codec *codec)
 	if (ret != 0)
 		return ret;
 
-	ret = snd_soc_dapm_new_controls(&codec->dapm, &arizona_spkr, 1);
-	if (ret != 0)
-		return ret;
+	switch (arizona->type) {
+	case WM8997:
+		break;
+	default:
+		ret = snd_soc_dapm_new_controls(&codec->dapm,
+						&arizona_spkr, 1);
+		if (ret != 0)
+			return ret;
+		break;
+	}
 
 	ret = arizona_request_irq(arizona, ARIZONA_IRQ_SPK_SHUTDOWN_WARN,
 				  "Thermal warning", arizona_thermal_warn,

sound/soc/codecs/wm8997.h

+/*
+ * wm8997.h  --  WM8997 ALSA SoC Audio driver
+ *
+ * Copyright 2012 Wolfson Microelectronics plc
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.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 _WM8997_H
+#define _WM8997_H
+
+#include "arizona.h"
+
+#define WM8997_FLL1        1
+#define WM8997_FLL2        2
+#define WM8997_FLL1_REFCLK 3
+#define WM8997_FLL2_REFCLK 4
+
+#endif