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diff --git a/include/asm-arm/arch-omap/aic23.h b/include/asm-arm/arch-omap/aic23.h
new file mode 100644
index 000000000000..590bac25b7c4
--- /dev/null
+++ b/include/asm-arm/arch-omap/aic23.h
@@ -0,0 +1,112 @@
+/*
+ * linux/include/asm-arm/arch-omap/aic23.h
+ *
+ * Hardware definitions for TI TLV320AIC23 audio codec
+ *
+ * Copyright (C) 2002 RidgeRun, Inc.
+ * Author: Steve Johnson
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the  GNU General Public License along
+ * with this program; if not, write  to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __ASM_ARCH_AIC23_H
+#define __ASM_ARCH_AIC23_H
+
+// Codec TLV320AIC23
+#define LEFT_LINE_VOLUME_ADDR           0x00
+#define RIGHT_LINE_VOLUME_ADDR          0x01
+#define LEFT_CHANNEL_VOLUME_ADDR        0x02
+#define RIGHT_CHANNEL_VOLUME_ADDR       0x03
+#define ANALOG_AUDIO_CONTROL_ADDR       0x04
+#define DIGITAL_AUDIO_CONTROL_ADDR      0x05
+#define POWER_DOWN_CONTROL_ADDR         0x06
+#define DIGITAL_AUDIO_FORMAT_ADDR       0x07
+#define SAMPLE_RATE_CONTROL_ADDR        0x08
+#define DIGITAL_INTERFACE_ACT_ADDR      0x09
+#define RESET_CONTROL_ADDR              0x0F
+
+// Left (right) line input volume control register
+#define LRS_ENABLED                     0x0100
+#define LIM_MUTED                       0x0080
+#define LIV_DEFAULT                     0x0017
+#define LIV_MAX                         0x001f
+#define LIV_MIN                         0x0000
+
+// Left (right) channel headphone volume control register
+#define LZC_ON                          0x0080
+#define LHV_DEFAULT                     0x0079
+#define LHV_MAX                         0x007f
+#define LHV_MIN                         0x0000
+
+// Analog audio path control register
+#define STE_ENABLED                     0x0020
+#define DAC_SELECTED                    0x0010
+#define BYPASS_ON                       0x0008
+#define INSEL_MIC                       0x0004
+#define MICM_MUTED                      0x0002
+#define MICB_20DB                       0x0001
+
+// Digital audio path control register
+#define DACM_MUTE                       0x0008
+#define DEEMP_32K                       0x0002
+#define DEEMP_44K                       0x0004
+#define DEEMP_48K                       0x0006
+#define ADCHP_ON                        0x0001
+
+// Power control down register
+#define DEVICE_POWER_OFF                0x0080
+#define CLK_OFF                         0x0040
+#define OSC_OFF                         0x0020
+#define OUT_OFF                         0x0010
+#define DAC_OFF                         0x0008
+#define ADC_OFF                         0x0004
+#define MIC_OFF                         0x0002
+#define LINE_OFF                        0x0001
+
+// Digital audio interface register
+#define MS_MASTER                       0x0040
+#define LRSWAP_ON                       0x0020
+#define LRP_ON                          0x0010
+#define IWL_16                          0x0000
+#define IWL_20                          0x0004
+#define IWL_24                          0x0008
+#define IWL_32                          0x000C
+#define FOR_I2S                         0x0002
+#define FOR_DSP                         0x0003
+
+// Sample rate control register
+#define CLKOUT_HALF                     0x0080
+#define CLKIN_HALF                      0x0040
+#define BOSR_384fs                      0x0002 // BOSR_272fs when in USB mode
+#define USB_CLK_ON                      0x0001
+#define SR_MASK                         0xf
+#define CLKOUT_SHIFT                    7
+#define CLKIN_SHIFT                     6
+#define SR_SHIFT                        2
+#define BOSR_SHIFT                      1
+
+// Digital interface register
+#define ACT_ON                          0x0001
+
+#define TLV320AIC23ID1                  (0x1a)  // cs low
+#define TLV320AIC23ID2                  (0x1b)  // cs high
+
+#endif /* __ASM_ARCH_AIC23_H */