x1000: internal codec audio driver

Change-Id: I2eb551ec6b593951c33ae6b93df2a23dc6612c43

2 files changed, 191 insertions, 0 deletions

diff --git a/firmware/export/audiohw.h b/firmware/export/audiohw.h
index 3f1bcb6feb..a365b97828 100644
--- a/firmware/export/audiohw.h
+++ b/firmware/export/audiohw.h
@@ -192,6 +192,8 @@ struct sound_settings_info
 #include "tsc2100.h"
 #elif defined(HAVE_JZ4740_CODEC)
 #include "jz4740-codec.h"
+#elif defined(HAVE_X1000_ICODEC_PLAY)
+#include "x1000-codec.h"
 #elif defined(HAVE_AK4537)
 #include "ak4537.h"
 #elif defined(HAVE_AK4376)
@@ -237,6 +239,11 @@ struct sound_settings_info
 #include "erosqlinux_codec.h"
 #endif
 
+#if defined(HAVE_X1000_ICODEC_REC) && !defined(HAVE_X1000_ICODEC_PLAY)
+/* Targets may have an external DAC above, but use icodec for recording only */
+#include "x1000-codec.h"
+#endif
+
 /* convert caps into defines */
 #ifdef AUDIOHW_CAPS
 /* Tone controls */
diff --git a/firmware/export/x1000-codec.h b/firmware/export/x1000-codec.h
new file mode 100644
index 0000000000..cfc71dbd60
--- /dev/null
+++ b/firmware/export/x1000-codec.h
@@ -0,0 +1,184 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2021-2022 Aidan MacDonald
+ *
+ * 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 distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __X1000_CODEC_H__
+#define __X1000_CODEC_H__
+
+#include "config.h"
+#include <stdbool.h>
+
+/* Note: the internal X1000 codec supports playback and record, but devices
+ * can employ an external codec for one and the internal codec for the other.
+ * The caveat, in this case, is that only one codec can be used at a time
+ * because the HW cannot mux playback/record independently.
+ *
+ * At present only recording is implemented, since all X1000 ports use an
+ * external DAC for playback.
+ */
+
+#ifdef HAVE_X1000_ICODEC_PLAY
+# error "X1000 icodec playback not implemented"
+#endif
+
+#define X1000_ICODEC_ADC_GAIN_MIN  0
+#define X1000_ICODEC_ADC_GAIN_MAX  43
+#define X1000_ICODEC_ADC_GAIN_STEP 1
+
+#define X1000_ICODEC_MIC_GAIN_MIN  0
+#define X1000_ICODEC_MIC_GAIN_MAX  20
+#define X1000_ICODEC_MIC_GAIN_STEP 4
+
+#ifdef HAVE_X1000_ICODEC_REC
+AUDIOHW_SETTING(MIC_GAIN, "dB", 0, 1, 0, 63, 12)
+#endif
+
+#define JZCODEC_INDIRECT_CREG(r)  ((r) & 0xff)
+#define JZCODEC_INDIRECT_INDEX(r) (((r) >> 8) & 0x7)
+#define JZCODEC_INDIRECT_BIT      0x800
+
+#define JZCODEC_INDIRECT(c, i) (JZCODEC_INDIRECT_BIT | ((i) << 8) | (c))
+
+/* Codec registers from Ingenic's kernel sources. The datasheet is badly
+ * screwed up and the addresses listed cannot be trusted. */
+enum {
+    JZCODEC_SR = 0,
+    JZCODEC_SR2,
+    JZCODEC_SIGR,
+    JZCODEC_SIGR2,
+    JZCODEC_SIGR3,
+    JZCODEC_SIGR5,
+    JZCODEC_SIGR7,
+    JZCODEC_MR,
+    JZCODEC_AICR_DAC,
+    JZCODEC_AICR_ADC,
+    JZCODEC_CR_DMIC,
+    JZCODEC_CR_MIC1,
+    JZCODEC_CR_MIC2,
+    JZCODEC_CR_DAC,
+    JZCODEC_CR_DAC2,
+    JZCODEC_CR_ADC,
+    JZCODEC_CR_MIX,
+    JZCODEC_DR_MIX,
+    JZCODEC_CR_VIC,
+    JZCODEC_CR_CK,
+    JZCODEC_FCR_DAC,
+    JZCODEC_SFCCR_DAC,
+    JZCODEC_SFFCR_DAC,
+    JZCODEC_FCR_ADC,
+    JZCODEC_CR_TIMER_MSB,
+    JZCODEC_CR_TIMER_LSB,
+    JZCODEC_ICR,
+    JZCODEC_IMR,
+    JZCODEC_IFR,
+    JZCODEC_IMR2,
+    JZCODEC_IFR2,
+    JZCODEC_GCR_DACL,
+    JZCODEC_GCR_DACR,
+    JZCODEC_GCR_DACL2,
+    JZCODEC_GCR_DACR2,
+    JZCODEC_GCR_MIC1,
+    JZCODEC_GCR_MIC2,
+    JZCODEC_GCR_ADCL,
+    JZCODEC_GCR_ADCR,
+    JZCODEC_GCR_MIXDACL,
+    JZCODEC_GCR_MIXDACR,
+    JZCODEC_GCR_MIXADCL,
+    JZCODEC_GCR_MIXADCR,
+    JZCODEC_CR_DAC_AGC,
+    JZCODEC_DR_DAC_AGC,
+    JZCODEC_CR_DAC2_AGC,
+    JZCODEC_DR_DAC2_AGC,
+    JZCODEC_CR_ADC_AGC,
+    JZCODEC_DR_ADC_AGC,
+    JZCODEC_SR_ADC_AGCDGL,
+    JZCODEC_SR_ADC_AGCDGR,
+    JZCODEC_SR_ADC_AGCAGL,
+    JZCODEC_SR_ADC_AGCAGR,
+    JZCODEC_CR_TR,
+    JZCODEC_DR_TR,
+    JZCODEC_SR_TR1,
+    JZCODEC_SR_TR2,
+    JZCODEC_SR_TR_SRCDAC,
+
+    JZCODEC_MIX0 = JZCODEC_INDIRECT(JZCODEC_CR_MIX, 0),
+    JZCODEC_MIX1 = JZCODEC_INDIRECT(JZCODEC_CR_MIX, 1),
+    JZCODEC_MIX2 = JZCODEC_INDIRECT(JZCODEC_CR_MIX, 2),
+    JZCODEC_MIX3 = JZCODEC_INDIRECT(JZCODEC_CR_MIX, 3),
+    JZCODEC_MIX4 = JZCODEC_INDIRECT(JZCODEC_CR_MIX, 4),
+
+    JZCODEC_DAC_AGC0 = JZCODEC_INDIRECT(JZCODEC_CR_DAC_AGC, 0),
+    JZCODEC_DAC_AGC1 = JZCODEC_INDIRECT(JZCODEC_CR_DAC_AGC, 1),
+    JZCODEC_DAC_AGC2 = JZCODEC_INDIRECT(JZCODEC_CR_DAC_AGC, 2),
+    JZCODEC_DAC_AGC3 = JZCODEC_INDIRECT(JZCODEC_CR_DAC_AGC, 3),
+
+    JZCODEC_DAC2_AGC0 = JZCODEC_INDIRECT(JZCODEC_CR_DAC2_AGC, 0),
+    JZCODEC_DAC2_AGC1 = JZCODEC_INDIRECT(JZCODEC_CR_DAC2_AGC, 1),
+    JZCODEC_DAC2_AGC2 = JZCODEC_INDIRECT(JZCODEC_CR_DAC2_AGC, 2),
+    JZCODEC_DAC2_AGC3 = JZCODEC_INDIRECT(JZCODEC_CR_DAC2_AGC, 3),
+
+    JZCODEC_ADC_AGC0 = JZCODEC_INDIRECT(JZCODEC_CR_ADC_AGC, 0),
+    JZCODEC_ADC_AGC1 = JZCODEC_INDIRECT(JZCODEC_CR_ADC_AGC, 1),
+    JZCODEC_ADC_AGC2 = JZCODEC_INDIRECT(JZCODEC_CR_ADC_AGC, 2),
+    JZCODEC_ADC_AGC3 = JZCODEC_INDIRECT(JZCODEC_CR_ADC_AGC, 3),
+    JZCODEC_ADC_AGC4 = JZCODEC_INDIRECT(JZCODEC_CR_ADC_AGC, 4),
+};
+
+/* for use with x1000_icodec_mic1_configure() */
+enum {
+    JZCODEC_MIC1_SINGLE_ENDED = (0 << 6),
+    JZCODEC_MIC1_DIFFERENTIAL = (1 << 6),
+
+    JZCODEC_MIC1_BIAS_2_08V = (0 << 3),
+    JZCODEC_MIC1_BIAS_1_66V = (1 << 3),
+
+    JZCODEC_MIC1_CONFIGURE_MASK = (1 << 6) | (1 << 3),
+};
+
+/* for use with x1000_icodec_adc_mic_sel() */
+enum {
+    JZCODEC_MIC_SEL_ANALOG,
+    JZCODEC_MIC_SEL_DIGITAL,
+};
+
+extern void x1000_icodec_open(void);
+extern void x1000_icodec_close(void);
+
+extern void x1000_icodec_dac_frequency(int fsel);
+
+extern void x1000_icodec_adc_enable(bool en);
+extern void x1000_icodec_adc_mute(bool muted);
+extern void x1000_icodec_adc_mic_sel(int sel);
+extern void x1000_icodec_adc_frequency(int fsel);
+extern void x1000_icodec_adc_highpass_filter(bool en);
+extern void x1000_icodec_adc_gain(int gain_dB);
+
+extern void x1000_icodec_mic1_enable(bool en);
+extern void x1000_icodec_mic1_bias_enable(bool en);
+extern void x1000_icodec_mic1_configure(int settings);
+extern void x1000_icodec_mic1_gain(int gain_dB);
+
+extern void x1000_icodec_mixer_enable(bool en);
+
+extern int  x1000_icodec_read(int reg);
+extern void x1000_icodec_write(int reg, int value);
+extern void x1000_icodec_update(int reg, int mask, int value);
+
+#endif /* __X1000_CODEC_H__ */