ASoC: Add WM8988 CODEC driver
The WM8988 is a low power, high quality stereo CODEC designed for
portable digital audio applications.
The device integrates complete interfaces to 2 stereo headphone or line
out ports. External component requirements are drastically reduced as no
separate headphone amplifiers are required. Advanced on-chip digital
signal processing performs graphic equaliser, 3-D sound enhancement and
automatic level control for the microphone or line input.
The WM8988 can operate as a master or a slave, with various master clock
frequencies including 12 or 24MHz for USB devices, or standard 256fs
rates like 12.288MHz and 24.576MHz. Different audio sample rates such as
96kHz, 48kHz, 44.1kHz are generated directly from the master clock
without the need for an external PLL.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm8988.h b/sound/soc/codecs/wm8988.h
new file mode 100644
index 0000000..4552d37
--- /dev/null
+++ b/sound/soc/codecs/wm8988.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2005 Openedhand Ltd.
+ *
+ * Author: Richard Purdie <richard@openedhand.com>
+ *
+ * Based on WM8753.h
+ *
+ * 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 _WM8988_H
+#define _WM8988_H
+
+/* WM8988 register space */
+
+#define WM8988_LINVOL 0x00
+#define WM8988_RINVOL 0x01
+#define WM8988_LOUT1V 0x02
+#define WM8988_ROUT1V 0x03
+#define WM8988_ADCDAC 0x05
+#define WM8988_IFACE 0x07
+#define WM8988_SRATE 0x08
+#define WM8988_LDAC 0x0a
+#define WM8988_RDAC 0x0b
+#define WM8988_BASS 0x0c
+#define WM8988_TREBLE 0x0d
+#define WM8988_RESET 0x0f
+#define WM8988_3D 0x10
+#define WM8988_ALC1 0x11
+#define WM8988_ALC2 0x12
+#define WM8988_ALC3 0x13
+#define WM8988_NGATE 0x14
+#define WM8988_LADC 0x15
+#define WM8988_RADC 0x16
+#define WM8988_ADCTL1 0x17
+#define WM8988_ADCTL2 0x18
+#define WM8988_PWR1 0x19
+#define WM8988_PWR2 0x1a
+#define WM8988_ADCTL3 0x1b
+#define WM8988_ADCIN 0x1f
+#define WM8988_LADCIN 0x20
+#define WM8988_RADCIN 0x21
+#define WM8988_LOUTM1 0x22
+#define WM8988_LOUTM2 0x23
+#define WM8988_ROUTM1 0x24
+#define WM8988_ROUTM2 0x25
+#define WM8988_LOUT2V 0x28
+#define WM8988_ROUT2V 0x29
+#define WM8988_LPPB 0x43
+#define WM8988_NUM_REG 0x44
+
+#define WM8988_SYSCLK 0
+
+extern struct snd_soc_dai wm8988_dai;
+extern struct snd_soc_codec_device soc_codec_dev_wm8988;
+
+#endif