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[src/trunk]: src/sys/dev/i2c Add driver for Everest Semi ES8316 Low Power Aud...
details: https://anonhg.NetBSD.org/src/rev/d06c5f2b5d18
branches: trunk
changeset: 466823:d06c5f2b5d18
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Thu Jan 02 22:06:59 2020 +0000
description:
Add driver for Everest Semi ES8316 Low Power Audio CODEC
diffstat:
sys/dev/i2c/es8316ac.c | 753 +++++++++++++++++++++++++++++++++++++++++++++++++
sys/dev/i2c/files.i2c | 7 +-
2 files changed, 759 insertions(+), 1 deletions(-)
diffs (truncated from 775 to 300 lines):
diff -r eaba6c7501e2 -r d06c5f2b5d18 sys/dev/i2c/es8316ac.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/i2c/es8316ac.c Thu Jan 02 22:06:59 2020 +0000
@@ -0,0 +1,753 @@
+/* $NetBSD: es8316ac.c,v 1.1 2020/01/02 22:06:59 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2020 Jared McNeill <jmcneill%invisible.ca@localhost>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: es8316ac.c,v 1.1 2020/01/02 22:06:59 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/conf.h>
+#include <sys/bitops.h>
+
+#include <dev/audio/audio_dai.h>
+
+#include <dev/i2c/i2cvar.h>
+
+#include <dev/fdt/fdtvar.h>
+
+#define ESCODEC_RESET_REG 0x00
+#define RESET_ALL __BITS(5,0)
+#define RESET_CSM_ON __BIT(7)
+#define ESCODEC_CLKMAN1_REG 0x01
+#define CLKMAN1_MCLK_ON __BIT(6)
+#define CLKMAN1_BCLK_ON __BIT(5)
+#define CLKMAN1_CLK_CP_ON __BIT(4)
+#define CLKMAN1_CLK_DAC_ON __BIT(2)
+#define CLKMAN1_ANACLK_DAC_ON __BIT(0)
+#define ESCODEC_ADC_OSR_REG 0x03
+#define ESCODEC_SD_CLK_REG 0x09
+#define SD_CLK_MSC __BIT(7)
+#define SD_CLK_BCLK_INV __BIT(5)
+#define ESCODEC_SD_ADC_REG 0x0a
+#define ESCODEC_SD_DAC_REG 0x0b
+#define SD_FMT_LRP __BIT(5)
+#define SD_FMT_WL __BITS(4,2)
+#define SD_FMT_WL_16 3
+#define SD_FMT_MASK __BITS(1,0)
+#define SD_FMT_I2S 0
+#define ESCODEC_VMID_REG 0x0c
+#define ESCODEC_PDN_REG 0x0d
+#define ESCODEC_HPSEL_REG 0x13
+#define ESCODEC_HPMIXRT_REG 0x14
+#define HPMIXRT_LD2LHPMIX __BIT(7)
+#define HPMIXRT_RD2RHPMIX __BIT(3)
+#define ESCODEC_HPMIX_REG 0x15
+#define HPMIX_LHPMIX_MUTE __BIT(5)
+#define HPMIX_PDN_LHP_MIX __BIT(4)
+#define HPMIX_RHPMIX_MUTE __BIT(1)
+#define HPMIX_PDN_RHP_MIX __BIT(0)
+#define ESCODEC_HPMIXVOL_REG 0x16
+#define HPMIXVOL_LHPMIXVOL __BITS(7,4)
+#define HPMIXVOL_RHPMIXVOL __BITS(3,0)
+#define ESCODEC_HPOUTEN_REG 0x17
+#define HPOUTEN_EN_HPL __BIT(6)
+#define HPOUTEN_HPL_OUTEN __BIT(5)
+#define HPOUTEN_EN_HPR __BIT(2)
+#define HPOUTEN_HPR_OUTEN __BIT(1)
+#define ESCODEC_HPVOL_REG 0x18
+#define HPVOL_PDN_LICAL __BIT(7)
+#define HPVOL_HPLVOL __BITS(5,4)
+#define HPVOL_PDN_RICAL __BIT(3)
+#define HPVOL_HPRVOL __BITS(1,0)
+#define ESCODEC_HPPWR_REG 0x19
+#define HPPWR_PDN_CPHP __BIT(2)
+#define ESCODEC_CPPWR_REG 0x1a
+#define CPPWR_PDN_CP __BIT(5)
+#define ESCODEC_DACPWR_REG 0x2f
+#define DACPWR_PDN_DAC_L __BIT(4)
+#define DACPWR_PDN_DAC_R __BIT(0)
+#define ESCODEC_DACCTL1_REG 0x30
+#define DACCTL1_MUTE __BIT(5)
+#define ESCODEC_DACVOL_L_REG 0x33
+#define DACVOL_L_DACVOLUME __BITS(7,0)
+#define ESCODEC_DACVOL_R_REG 0x34
+#define DACVOL_R_DACVOLUME __BITS(7,0)
+
+static const struct device_compatible_entry compat_data[] = {
+ { "everest,es8316", 1 },
+ { NULL }
+};
+
+struct escodec_softc {
+ device_t sc_dev;
+ i2c_tag_t sc_i2c;
+ i2c_addr_t sc_addr;
+ int sc_phandle;
+ struct clk *sc_clk;
+
+ struct audio_dai_device sc_dai;
+ audio_dai_tag_t sc_amplifier;
+
+ uint8_t sc_swvol;
+};
+
+static void
+escodec_lock(struct escodec_softc *sc)
+{
+ iic_acquire_bus(sc->sc_i2c, 0);
+}
+
+static void
+escodec_unlock(struct escodec_softc *sc)
+{
+ iic_release_bus(sc->sc_i2c, 0);
+}
+
+static uint8_t
+escodec_read(struct escodec_softc *sc, uint8_t reg)
+{
+ uint8_t val;
+
+ if (iic_smbus_read_byte(sc->sc_i2c, sc->sc_addr, reg, &val, I2C_F_POLL) != 0)
+ val = 0xff;
+
+ return val;
+}
+
+static void
+escodec_write(struct escodec_softc *sc, uint8_t reg, uint8_t val)
+{
+ (void)iic_smbus_write_byte(sc->sc_i2c, sc->sc_addr, reg, val, I2C_F_POLL);
+}
+
+enum escodec_mixer_ctrl {
+ ESCODEC_OUTPUT_CLASS,
+ ESCODEC_INPUT_CLASS,
+ ESCODEC_OUTPUT_MASTER,
+ ESCODEC_INPUT_DAC,
+ ESCODEC_INPUT_DAC_MUTE,
+ ESCODEC_INPUT_HEADPHONE,
+ ESCODEC_INPUT_MIXEROUT,
+ ESCODEC_INPUT_MIXEROUT_MUTE,
+
+ ESCODEC_MIXER_CTRL_LAST
+};
+
+enum escodec_mixer_type {
+ ESCODEC_MIXER_CLASS,
+ ESCODEC_MIXER_SWVOL,
+ ESCODEC_MIXER_AMPLIFIER,
+ ESCODEC_MIXER_ATTENUATOR,
+ ESCODEC_MIXER_MUTE,
+};
+
+static const struct escodec_mixer {
+ const char * name;
+ int mixer_class;
+ int prev, next;
+ enum escodec_mixer_ctrl ctrl;
+ enum escodec_mixer_type type;
+ u_int reg[2];
+ uint8_t mask[2];
+ uint8_t maxval;
+} escodec_mixers[ESCODEC_MIXER_CTRL_LAST] = {
+ /*
+ * Mixer classes
+ */
+ [ESCODEC_OUTPUT_CLASS] = {
+ .name = AudioCoutputs,
+ .type = ESCODEC_MIXER_CLASS,
+ },
+ [ESCODEC_INPUT_CLASS] = {
+ .name = AudioCinputs,
+ .type = ESCODEC_MIXER_CLASS,
+ },
+
+ /*
+ * Software master volume
+ */
+ [ESCODEC_OUTPUT_MASTER] = {
+ .name = AudioNmaster,
+ .mixer_class = ESCODEC_OUTPUT_CLASS,
+ .prev = AUDIO_MIXER_LAST,
+ .next = AUDIO_MIXER_LAST,
+ .type = ESCODEC_MIXER_SWVOL,
+ },
+
+ /*
+ * Stereo DAC
+ */
+ [ESCODEC_INPUT_DAC] = {
+ .name = AudioNdac,
+ .mixer_class = ESCODEC_INPUT_CLASS,
+ .prev = AUDIO_MIXER_LAST,
+ .next = ESCODEC_INPUT_DAC_MUTE,
+ .type = ESCODEC_MIXER_ATTENUATOR,
+ .reg = {
+ [AUDIO_MIXER_LEVEL_LEFT] = ESCODEC_DACVOL_L_REG,
+ [AUDIO_MIXER_LEVEL_RIGHT] = ESCODEC_DACVOL_R_REG,
+ },
+ .mask = {
+ [AUDIO_MIXER_LEVEL_LEFT] = DACVOL_L_DACVOLUME,
+ [AUDIO_MIXER_LEVEL_RIGHT] = DACVOL_R_DACVOLUME,
+ },
+ .maxval = 0xc0,
+ },
+ [ESCODEC_INPUT_DAC_MUTE] = {
+ .name = AudioNmute,
+ .mixer_class = ESCODEC_INPUT_CLASS,
+ .prev = ESCODEC_INPUT_DAC,
+ .next = AUDIO_MIXER_LAST,
+ .type = ESCODEC_MIXER_MUTE,
+ .reg = {
+ [AUDIO_MIXER_LEVEL_MONO] = ESCODEC_DACCTL1_REG,
+ },
+ .mask = {
+ [AUDIO_MIXER_LEVEL_MONO] = DACCTL1_MUTE,
+ }
+ },
+
+ /*
+ * Charge Pump Headphones
+ */
+ [ESCODEC_INPUT_HEADPHONE] = {
+ .name = AudioNheadphone,
+ .mixer_class = ESCODEC_INPUT_CLASS,
+ .prev = AUDIO_MIXER_LAST,
+ .next = AUDIO_MIXER_LAST,
+ .type = ESCODEC_MIXER_ATTENUATOR,
+ .reg = {
+ [AUDIO_MIXER_LEVEL_LEFT] = ESCODEC_HPVOL_REG,
+ [AUDIO_MIXER_LEVEL_RIGHT] = ESCODEC_HPVOL_REG,
+ },
+ .mask = {
+ [AUDIO_MIXER_LEVEL_LEFT] = HPVOL_HPLVOL,
+ [AUDIO_MIXER_LEVEL_RIGHT] = HPVOL_HPRVOL,
+ }
+ },
+
+ /*
+ * Headphone mixer
+ */
+ [ESCODEC_INPUT_MIXEROUT] = {
+ .name = AudioNmixerout,
+ .mixer_class = ESCODEC_INPUT_CLASS,
+ .prev = AUDIO_MIXER_LAST,
+ .next = ESCODEC_INPUT_MIXEROUT_MUTE,
+ .type = ESCODEC_MIXER_AMPLIFIER,
+ .reg = {
+ [AUDIO_MIXER_LEVEL_LEFT] = ESCODEC_HPMIXVOL_REG,
+ [AUDIO_MIXER_LEVEL_RIGHT] = ESCODEC_HPMIXVOL_REG,
+ },
+ .mask = {
+ [AUDIO_MIXER_LEVEL_LEFT] = HPMIXVOL_LHPMIXVOL,
+ [AUDIO_MIXER_LEVEL_RIGHT] = HPMIXVOL_RHPMIXVOL
+ },
+ /*
+ * Datasheet says this field goes up to 0xb, but values
+ * above 0x4 result in noisy output in practice.
+ */
+ .maxval = 0x4,
+ },
+ [ESCODEC_INPUT_MIXEROUT_MUTE] = {
+ .name = AudioNmute,
+ .mixer_class = ESCODEC_INPUT_CLASS,
+ .prev = ESCODEC_INPUT_MIXEROUT,
+ .next = AUDIO_MIXER_LAST,
+ .type = ESCODEC_MIXER_MUTE,
+ .reg = {
+ [AUDIO_MIXER_LEVEL_MONO] = ESCODEC_HPMIX_REG,
+ },
+ .mask = {
+ [AUDIO_MIXER_LEVEL_MONO] = HPMIX_LHPMIX_MUTE | HPMIX_RHPMIX_MUTE,
+ }
+ },
+};
+
+static void
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