ASoC: add a WM8978 codec driver

The WM8978 codec from Wolfson Microelectronics is very similar to
wm8974, but is stereo and also has some differences in pin configuration
and internal signal routing. This driver is based on wm8974 and takes
the differences into account.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 89 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8978.h b/sound/soc/codecs/wm8978.h
new file mode 100644
index 000000000000..b58f0bf947e7
--- /dev/null
+++ b/sound/soc/codecs/wm8978.h
@@ -0,0 +1,89 @@
+/*
+ * wm8978.h             --  codec driver for WM8978
+ *
+ * Copyright 2009 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+ *
+ * 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 __WM8978_H__
+#define __WM8978_H__
+
+/*
+ * Register values.
+ */
+#define WM8978_RESET                            0x00
+#define WM8978_POWER_MANAGEMENT_1               0x01
+#define WM8978_POWER_MANAGEMENT_2               0x02
+#define WM8978_POWER_MANAGEMENT_3               0x03
+#define WM8978_AUDIO_INTERFACE                  0x04
+#define WM8978_COMPANDING_CONTROL               0x05
+#define WM8978_CLOCKING                         0x06
+#define WM8978_ADDITIONAL_CONTROL               0x07
+#define WM8978_GPIO_CONTROL                     0x08
+#define WM8978_JACK_DETECT_CONTROL_1            0x09
+#define WM8978_DAC_CONTROL                      0x0A
+#define WM8978_LEFT_DAC_DIGITAL_VOLUME          0x0B
+#define WM8978_RIGHT_DAC_DIGITAL_VOLUME         0x0C
+#define WM8978_JACK_DETECT_CONTROL_2            0x0D
+#define WM8978_ADC_CONTROL                      0x0E
+#define WM8978_LEFT_ADC_DIGITAL_VOLUME          0x0F
+#define WM8978_RIGHT_ADC_DIGITAL_VOLUME         0x10
+#define WM8978_EQ1                              0x12
+#define WM8978_EQ2                              0x13
+#define WM8978_EQ3                              0x14
+#define WM8978_EQ4                              0x15
+#define WM8978_EQ5                              0x16
+#define WM8978_DAC_LIMITER_1                    0x18
+#define WM8978_DAC_LIMITER_2                    0x19
+#define WM8978_NOTCH_FILTER_1                   0x1b
+#define WM8978_NOTCH_FILTER_2                   0x1c
+#define WM8978_NOTCH_FILTER_3                   0x1d
+#define WM8978_NOTCH_FILTER_4                   0x1e
+#define WM8978_ALC_CONTROL_1                    0x20
+#define WM8978_ALC_CONTROL_2                    0x21
+#define WM8978_ALC_CONTROL_3                    0x22
+#define WM8978_NOISE_GATE                       0x23
+#define WM8978_PLL_N                            0x24
+#define WM8978_PLL_K1                           0x25
+#define WM8978_PLL_K2                           0x26
+#define WM8978_PLL_K3                           0x27
+#define WM8978_3D_CONTROL                       0x29
+#define WM8978_BEEP_CONTROL                     0x2b
+#define WM8978_INPUT_CONTROL                    0x2c
+#define WM8978_LEFT_INP_PGA_CONTROL             0x2d
+#define WM8978_RIGHT_INP_PGA_CONTROL            0x2e
+#define WM8978_LEFT_ADC_BOOST_CONTROL           0x2f
+#define WM8978_RIGHT_ADC_BOOST_CONTROL          0x30
+#define WM8978_OUTPUT_CONTROL                   0x31
+#define WM8978_LEFT_MIXER_CONTROL               0x32
+#define WM8978_RIGHT_MIXER_CONTROL              0x33
+#define WM8978_LOUT1_HP_CONTROL                 0x34
+#define WM8978_ROUT1_HP_CONTROL                 0x35
+#define WM8978_LOUT2_SPK_CONTROL                0x36
+#define WM8978_ROUT2_SPK_CONTROL                0x37
+#define WM8978_OUT3_MIXER_CONTROL               0x38
+#define WM8978_OUT4_MIXER_CONTROL               0x39
+
+#define WM8978_CACHEREGNUM                      58
+
+/* Clock divider Id's */
+enum wm8978_clk_id {
+        WM8978_OPCLKRATE,
+        WM8978_MCLKDIV,
+        WM8978_ADCCLK,
+        WM8978_DACCLK,
+        WM8978_BCLKDIV,
+};
+
+enum wm8978_sysclk_src {
+        WM8978_PLL,
+        WM8978_MCLK
+};
+
+extern struct snd_soc_dai wm8978_dai;
+extern struct snd_soc_codec_device soc_codec_dev_wm8978;
+
+#endif  /* __WM8978_H__ */