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ASoC: Add WM9090 amplifier driver

The WM9090 is a high performance low power audio subsystem, including
headphone and class D speaker drivers.

Note that this driver is a standalone CODEC driver and so is only
immediately suitable for use with the WM9090 as a standalone sound card
taking line inputs, or with a DAC with no software control.  The pending
ASoC multi-CODEC support will expand the range of systems that can use
the driver, or system-specific adaptations can be made.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
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broonie committed Apr 28, 2010
1 parent dde3a7e commit 39b8eab7e7fe429d8d57f18c0ebdb7c25df55f5c
Showing with 1,522 additions and 0 deletions.
  1. +28 −0 include/sound/wm9090.h
  2. +4 −0 sound/soc/codecs/Kconfig
  3. +2 −0 sound/soc/codecs/Makefile
  4. +773 −0 sound/soc/codecs/wm9090.c
  5. +715 −0 sound/soc/codecs/wm9090.h
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@@ -0,0 +1,28 @@
+/*
+ * linux/sound/wm9090.h -- Platform data for WM9090
+ *
+ * Copyright 2009, 2010 Wolfson Microelectronics. PLC.
+ *
+ * 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_WM9090_H
+#define __LINUX_SND_WM9090_H
+
+struct wm9090_platform_data {
+ /* Line inputs 1 & 2 can optionally be differential */
+ unsigned int lin1_diff:1;
+ unsigned int lin2_diff:1;
+
+ /* AGC configuration. This is intended to protect the speaker
+ * against overdriving and will therefore depend on the
+ * hardware setup with incorrect runtime configuration
+ * potentially causing hardware damage.
+ */
+ unsigned int agc_ena:1;
+ u16 agc[3];
+};
+
+#endif
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@@ -66,6 +66,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_WM8993 if I2C
select SND_SOC_WM8994 if MFD_WM8994
select SND_SOC_WM9081 if I2C
+ select SND_SOC_WM9090 if I2C
select SND_SOC_WM9705 if SND_SOC_AC97_BUS
select SND_SOC_WM9712 if SND_SOC_AC97_BUS
select SND_SOC_WM9713 if SND_SOC_AC97_BUS
@@ -277,3 +278,6 @@ config SND_SOC_TPA6130A2
config SND_SOC_WM2000
tristate
+
+config SND_SOC_WM9090
+ tristate
@@ -61,6 +61,7 @@ snd-soc-wm-hubs-objs := wm_hubs.o
snd-soc-max9877-objs := max9877.o
snd-soc-tpa6130a2-objs := tpa6130a2.o
snd-soc-wm2000-objs := wm2000.o
+snd-soc-wm9090-objs := wm9090.o
obj-$(CONFIG_SND_SOC_AC97_CODEC) += snd-soc-ac97.o
obj-$(CONFIG_SND_SOC_AD1836) += snd-soc-ad1836.o
@@ -125,3 +126,4 @@ obj-$(CONFIG_SND_SOC_WM_HUBS) += snd-soc-wm-hubs.o
obj-$(CONFIG_SND_SOC_MAX9877) += snd-soc-max9877.o
obj-$(CONFIG_SND_SOC_TPA6130A2) += snd-soc-tpa6130a2.o
obj-$(CONFIG_SND_SOC_WM2000) += snd-soc-wm2000.o
+obj-$(CONFIG_SND_SOC_WM9090) += snd-soc-wm9090.o
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