ASoC: Initial WM8741 CODEC driver
The WM8741 is a very high performance stereo DAC designed for audio
applications such as professional recording systems, A/V receivers and
high specification CD, DVD and home theatre systems. The device supports
PCM data input word lengths from 16 to 32-bits and sampling rates up to
192kHz. The WM8741 also supports DSD bit-stream data format, in both
direct DSD and PCM-converted DSD modes.
TODO: Expand wm8741_set_dai_sysclk and rate_constraint members to
allow for all supported sample rate / Master Clock frequency combinations.
Fully enable control of supplies.
Signed-off-by: Ian Lartey <ian@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm8741.h b/sound/soc/codecs/wm8741.h
new file mode 100644
index 0000000..fdef6ec
--- /dev/null
+++ b/sound/soc/codecs/wm8741.h
@@ -0,0 +1,214 @@
+/*
+ * wm8741.h -- WM8423 ASoC driver
+ *
+ * Copyright 2010 Wolfson Microelectronics, plc
+ *
+ * Author: Ian Lartey <ian@opensource.wolfsonmicro.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 _WM8741_H
+#define _WM8741_H
+
+/*
+ * Register values.
+ */
+#define WM8741_DACLLSB_ATTENUATION 0x00
+#define WM8741_DACLMSB_ATTENUATION 0x01
+#define WM8741_DACRLSB_ATTENUATION 0x02
+#define WM8741_DACRMSB_ATTENUATION 0x03
+#define WM8741_VOLUME_CONTROL 0x04
+#define WM8741_FORMAT_CONTROL 0x05
+#define WM8741_FILTER_CONTROL 0x06
+#define WM8741_MODE_CONTROL_1 0x07
+#define WM8741_MODE_CONTROL_2 0x08
+#define WM8741_RESET 0x09
+#define WM8741_ADDITIONAL_CONTROL_1 0x20
+
+#define WM8741_REGISTER_COUNT 11
+#define WM8741_MAX_REGISTER 0x20
+
+/*
+ * Field Definitions.
+ */
+
+/*
+ * R0 (0x00) - DACLLSB_ATTENUATION
+ */
+#define WM8741_UPDATELL 0x0020 /* UPDATELL */
+#define WM8741_UPDATELL_MASK 0x0020 /* UPDATELL */
+#define WM8741_UPDATELL_SHIFT 5 /* UPDATELL */
+#define WM8741_UPDATELL_WIDTH 1 /* UPDATELL */
+#define WM8741_LAT_4_0_MASK 0x001F /* LAT[4:0] - [4:0] */
+#define WM8741_LAT_4_0_SHIFT 0 /* LAT[4:0] - [4:0] */
+#define WM8741_LAT_4_0_WIDTH 5 /* LAT[4:0] - [4:0] */
+
+/*
+ * R1 (0x01) - DACLMSB_ATTENUATION
+ */
+#define WM8741_UPDATELM 0x0020 /* UPDATELM */
+#define WM8741_UPDATELM_MASK 0x0020 /* UPDATELM */
+#define WM8741_UPDATELM_SHIFT 5 /* UPDATELM */
+#define WM8741_UPDATELM_WIDTH 1 /* UPDATELM */
+#define WM8741_LAT_9_5_0_MASK 0x001F /* LAT[9:5] - [4:0] */
+#define WM8741_LAT_9_5_0_SHIFT 0 /* LAT[9:5] - [4:0] */
+#define WM8741_LAT_9_5_0_WIDTH 5 /* LAT[9:5] - [4:0] */
+
+/*
+ * R2 (0x02) - DACRLSB_ATTENUATION
+ */
+#define WM8741_UPDATERL 0x0020 /* UPDATERL */
+#define WM8741_UPDATERL_MASK 0x0020 /* UPDATERL */
+#define WM8741_UPDATERL_SHIFT 5 /* UPDATERL */
+#define WM8741_UPDATERL_WIDTH 1 /* UPDATERL */
+#define WM8741_RAT_4_0_MASK 0x001F /* RAT[4:0] - [4:0] */
+#define WM8741_RAT_4_0_SHIFT 0 /* RAT[4:0] - [4:0] */
+#define WM8741_RAT_4_0_WIDTH 5 /* RAT[4:0] - [4:0] */
+
+/*
+ * R3 (0x03) - DACRMSB_ATTENUATION
+ */
+#define WM8741_UPDATERM 0x0020 /* UPDATERM */
+#define WM8741_UPDATERM_MASK 0x0020 /* UPDATERM */
+#define WM8741_UPDATERM_SHIFT 5 /* UPDATERM */
+#define WM8741_UPDATERM_WIDTH 1 /* UPDATERM */
+#define WM8741_RAT_9_5_0_MASK 0x001F /* RAT[9:5] - [4:0] */
+#define WM8741_RAT_9_5_0_SHIFT 0 /* RAT[9:5] - [4:0] */
+#define WM8741_RAT_9_5_0_WIDTH 5 /* RAT[9:5] - [4:0] */
+
+/*
+ * R4 (0x04) - VOLUME_CONTROL
+ */
+#define WM8741_AMUTE 0x0080 /* AMUTE */
+#define WM8741_AMUTE_MASK 0x0080 /* AMUTE */
+#define WM8741_AMUTE_SHIFT 7 /* AMUTE */
+#define WM8741_AMUTE_WIDTH 1 /* AMUTE */
+#define WM8741_ZFLAG_MASK 0x0060 /* ZFLAG - [6:5] */
+#define WM8741_ZFLAG_SHIFT 5 /* ZFLAG - [6:5] */
+#define WM8741_ZFLAG_WIDTH 2 /* ZFLAG - [6:5] */
+#define WM8741_IZD 0x0010 /* IZD */
+#define WM8741_IZD_MASK 0x0010 /* IZD */
+#define WM8741_IZD_SHIFT 4 /* IZD */
+#define WM8741_IZD_WIDTH 1 /* IZD */
+#define WM8741_SOFT 0x0008 /* SOFT MUTE */
+#define WM8741_SOFT_MASK 0x0008 /* SOFT MUTE */
+#define WM8741_SOFT_SHIFT 3 /* SOFT MUTE */
+#define WM8741_SOFT_WIDTH 1 /* SOFT MUTE */
+#define WM8741_ATC 0x0004 /* ATC */
+#define WM8741_ATC_MASK 0x0004 /* ATC */
+#define WM8741_ATC_SHIFT 2 /* ATC */
+#define WM8741_ATC_WIDTH 1 /* ATC */
+#define WM8741_ATT2DB 0x0002 /* ATT2DB */
+#define WM8741_ATT2DB_MASK 0x0002 /* ATT2DB */
+#define WM8741_ATT2DB_SHIFT 1 /* ATT2DB */
+#define WM8741_ATT2DB_WIDTH 1 /* ATT2DB */
+#define WM8741_VOL_RAMP 0x0001 /* VOL_RAMP */
+#define WM8741_VOL_RAMP_MASK 0x0001 /* VOL_RAMP */
+#define WM8741_VOL_RAMP_SHIFT 0 /* VOL_RAMP */
+#define WM8741_VOL_RAMP_WIDTH 1 /* VOL_RAMP */
+
+/*
+ * R5 (0x05) - FORMAT_CONTROL
+ */
+#define WM8741_PWDN 0x0080 /* PWDN */
+#define WM8741_PWDN_MASK 0x0080 /* PWDN */
+#define WM8741_PWDN_SHIFT 7 /* PWDN */
+#define WM8741_PWDN_WIDTH 1 /* PWDN */
+#define WM8741_REV 0x0040 /* REV */
+#define WM8741_REV_MASK 0x0040 /* REV */
+#define WM8741_REV_SHIFT 6 /* REV */
+#define WM8741_REV_WIDTH 1 /* REV */
+#define WM8741_BCP 0x0020 /* BCP */
+#define WM8741_BCP_MASK 0x0020 /* BCP */
+#define WM8741_BCP_SHIFT 5 /* BCP */
+#define WM8741_BCP_WIDTH 1 /* BCP */
+#define WM8741_LRP 0x0010 /* LRP */
+#define WM8741_LRP_MASK 0x0010 /* LRP */
+#define WM8741_LRP_SHIFT 4 /* LRP */
+#define WM8741_LRP_WIDTH 1 /* LRP */
+#define WM8741_FMT_MASK 0x000C /* FMT - [3:2] */
+#define WM8741_FMT_SHIFT 2 /* FMT - [3:2] */
+#define WM8741_FMT_WIDTH 2 /* FMT - [3:2] */
+#define WM8741_IWL_MASK 0x0003 /* IWL - [1:0] */
+#define WM8741_IWL_SHIFT 0 /* IWL - [1:0] */
+#define WM8741_IWL_WIDTH 2 /* IWL - [1:0] */
+
+/*
+ * R6 (0x06) - FILTER_CONTROL
+ */
+#define WM8741_ZFLAG_HI 0x0080 /* ZFLAG_HI */
+#define WM8741_ZFLAG_HI_MASK 0x0080 /* ZFLAG_HI */
+#define WM8741_ZFLAG_HI_SHIFT 7 /* ZFLAG_HI */
+#define WM8741_ZFLAG_HI_WIDTH 1 /* ZFLAG_HI */
+#define WM8741_DEEMPH_MASK 0x0060 /* DEEMPH - [6:5] */
+#define WM8741_DEEMPH_SHIFT 5 /* DEEMPH - [6:5] */
+#define WM8741_DEEMPH_WIDTH 2 /* DEEMPH - [6:5] */
+#define WM8741_DSDFILT_MASK 0x0018 /* DSDFILT - [4:3] */
+#define WM8741_DSDFILT_SHIFT 3 /* DSDFILT - [4:3] */
+#define WM8741_DSDFILT_WIDTH 2 /* DSDFILT - [4:3] */
+#define WM8741_FIRSEL_MASK 0x0007 /* FIRSEL - [2:0] */
+#define WM8741_FIRSEL_SHIFT 0 /* FIRSEL - [2:0] */
+#define WM8741_FIRSEL_WIDTH 3 /* FIRSEL - [2:0] */
+
+/*
+ * R7 (0x07) - MODE_CONTROL_1
+ */
+#define WM8741_MODE8X 0x0080 /* MODE8X */
+#define WM8741_MODE8X_MASK 0x0080 /* MODE8X */
+#define WM8741_MODE8X_SHIFT 7 /* MODE8X */
+#define WM8741_MODE8X_WIDTH 1 /* MODE8X */
+#define WM8741_OSR_MASK 0x0060 /* OSR - [6:5] */
+#define WM8741_OSR_SHIFT 5 /* OSR - [6:5] */
+#define WM8741_OSR_WIDTH 2 /* OSR - [6:5] */
+#define WM8741_SR_MASK 0x001C /* SR - [4:2] */
+#define WM8741_SR_SHIFT 2 /* SR - [4:2] */
+#define WM8741_SR_WIDTH 3 /* SR - [4:2] */
+#define WM8741_MODESEL_MASK 0x0003 /* MODESEL - [1:0] */
+#define WM8741_MODESEL_SHIFT 0 /* MODESEL - [1:0] */
+#define WM8741_MODESEL_WIDTH 2 /* MODESEL - [1:0] */
+
+/*
+ * R8 (0x08) - MODE_CONTROL_2
+ */
+#define WM8741_DSD_GAIN 0x0040 /* DSD_GAIN */
+#define WM8741_DSD_GAIN_MASK 0x0040 /* DSD_GAIN */
+#define WM8741_DSD_GAIN_SHIFT 6 /* DSD_GAIN */
+#define WM8741_DSD_GAIN_WIDTH 1 /* DSD_GAIN */
+#define WM8741_SDOUT 0x0020 /* SDOUT */
+#define WM8741_SDOUT_MASK 0x0020 /* SDOUT */
+#define WM8741_SDOUT_SHIFT 5 /* SDOUT */
+#define WM8741_SDOUT_WIDTH 1 /* SDOUT */
+#define WM8741_DOUT 0x0010 /* DOUT */
+#define WM8741_DOUT_MASK 0x0010 /* DOUT */
+#define WM8741_DOUT_SHIFT 4 /* DOUT */
+#define WM8741_DOUT_WIDTH 1 /* DOUT */
+#define WM8741_DIFF_MASK 0x000C /* DIFF - [3:2] */
+#define WM8741_DIFF_SHIFT 2 /* DIFF - [3:2] */
+#define WM8741_DIFF_WIDTH 2 /* DIFF - [3:2] */
+#define WM8741_DITHER_MASK 0x0003 /* DITHER - [1:0] */
+#define WM8741_DITHER_SHIFT 0 /* DITHER - [1:0] */
+#define WM8741_DITHER_WIDTH 2 /* DITHER - [1:0] */
+
+/*
+ * R32 (0x20) - ADDITONAL_CONTROL_1
+ */
+#define WM8741_DSD_LEVEL 0x0002 /* DSD_LEVEL */
+#define WM8741_DSD_LEVEL_MASK 0x0002 /* DSD_LEVEL */
+#define WM8741_DSD_LEVEL_SHIFT 1 /* DSD_LEVEL */
+#define WM8741_DSD_LEVEL_WIDTH 1 /* DSD_LEVEL */
+#define WM8741_DSD_NO_NOTCH 0x0001 /* DSD_NO_NOTCH */
+#define WM8741_DSD_NO_NOTCH_MASK 0x0001 /* DSD_NO_NOTCH */
+#define WM8741_DSD_NO_NOTCH_SHIFT 0 /* DSD_NO_NOTCH */
+#define WM8741_DSD_NO_NOTCH_WIDTH 1 /* DSD_NO_NOTCH */
+
+#define WM8741_SYSCLK 0
+
+extern struct snd_soc_dai wm8741_dai;
+extern struct snd_soc_codec_device soc_codec_dev_wm8741;
+
+#endif