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openwrt/target/linux/sunxi/patches-4.1/165-asoc-add-sunxi-codec.patch

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From 97dcb50623db12f13c9c9a8b68dca61901b7f030 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
Date: Mon, 14 Jul 2014 20:25:23 -0300
Subject: [PATCH] ASoC: sunxi: add support for the on-chip codec on early
Allwinner SoCs
The sun4i, sun5i and sun7i SoC families have a built-in codec, capable
of both audio capture and playback. This memory-mapped device can be fed
with audio data via the Allwinner DMA controller.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
sound/soc/Kconfig | 1 +
sound/soc/Makefile | 1 +
sound/soc/sunxi/Kconfig | 10 +
sound/soc/sunxi/Makefile | 2 +
sound/soc/sunxi/sunxi-codec.c | 802 ++++++++++++++++++++++++++++++++++++++++++
5 files changed, 816 insertions(+)
create mode 100644 sound/soc/sunxi/Kconfig
create mode 100644 sound/soc/sunxi/Makefile
create mode 100644 sound/soc/sunxi/sunxi-codec.c
--- a/sound/soc/Kconfig
+++ b/sound/soc/Kconfig
@@ -53,6 +53,7 @@ source "sound/soc/samsung/Kconfig"
source "sound/soc/sh/Kconfig"
source "sound/soc/sirf/Kconfig"
source "sound/soc/spear/Kconfig"
+source "sound/soc/sunxi/Kconfig"
source "sound/soc/tegra/Kconfig"
source "sound/soc/txx9/Kconfig"
source "sound/soc/ux500/Kconfig"
--- a/sound/soc/Makefile
+++ b/sound/soc/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_SND_SOC) += samsung/
obj-$(CONFIG_SND_SOC) += sh/
obj-$(CONFIG_SND_SOC) += sirf/
obj-$(CONFIG_SND_SOC) += spear/
+obj-$(CONFIG_SND_SOC) += sunxi/
obj-$(CONFIG_SND_SOC) += tegra/
obj-$(CONFIG_SND_SOC) += txx9/
obj-$(CONFIG_SND_SOC) += ux500/
--- /dev/null
+++ b/sound/soc/sunxi/Kconfig
@@ -0,0 +1,10 @@
+menu "SoC Audio support for Allwinner SoCs"
+ depends on ARCH_SUNXI
+
+config SND_SUNXI_SOC_CODEC
+ tristate "APB on-chip sun4i/sun5i/sun7i CODEC"
+ select SND_SOC_GENERIC_DMAENGINE_PCM
+ select REGMAP_MMIO
+ default y
+
+endmenu
--- /dev/null
+++ b/sound/soc/sunxi/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_SND_SUNXI_SOC_CODEC) += sunxi-codec.o
+
--- /dev/null
+++ b/sound/soc/sunxi/sunxi-codec.c
@@ -0,0 +1,802 @@
+/*
+ * Copyright 2014 Emilio López <emilio@elopez.com.ar>
+ * Copyright 2014 Jon Smirl <jonsmirl@gmail.com>
+ *
+ * Based on the Allwinner SDK driver, released under the GPL.
+ *
+ * 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <linux/clk.h>
+#include <linux/regmap.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/initval.h>
+#include <sound/dmaengine_pcm.h>
+
+/* Codec DAC register offsets and bit fields */
+#define SUNXI_DAC_DPC (0x00)
+#define SUNXI_DAC_DPC_EN_DA (31)
+#define SUNXI_DAC_DPC_DVOL (12)
+#define SUNXI_DAC_FIFOC (0x04)
+#define SUNXI_DAC_FIFOC_DAC_FS (29)
+#define SUNXI_DAC_FIFOC_FIR_VERSION (28)
+#define SUNXI_DAC_FIFOC_SEND_LASAT (26)
+#define SUNXI_DAC_FIFOC_TX_FIFO_MODE (24)
+#define SUNXI_DAC_FIFOC_DRQ_CLR_CNT (21)
+#define SUNXI_DAC_FIFOC_TX_TRIG_LEVEL (8)
+#define SUNXI_DAC_FIFOC_MONO_EN (6)
+#define SUNXI_DAC_FIFOC_TX_SAMPLE_BITS (5)
+#define SUNXI_DAC_FIFOC_DAC_DRQ_EN (4)
+#define SUNXI_DAC_FIFOC_FIFO_FLUSH (0)
+#define SUNXI_DAC_FIFOS (0x08)
+#define SUNXI_DAC_TXDATA (0x0c)
+#define SUNXI_DAC_ACTL (0x10)
+#define SUNXI_DAC_ACTL_DACAENR (31)
+#define SUNXI_DAC_ACTL_DACAENL (30)
+#define SUNXI_DAC_ACTL_MIXEN (29)
+#define SUNXI_DAC_ACTL_LDACLMIXS (15)
+#define SUNXI_DAC_ACTL_RDACRMIXS (14)
+#define SUNXI_DAC_ACTL_LDACRMIXS (13)
+#define SUNXI_DAC_ACTL_DACPAS (8)
+#define SUNXI_DAC_ACTL_MIXPAS (7)
+#define SUNXI_DAC_ACTL_PA_MUTE (6)
+#define SUNXI_DAC_ACTL_PA_VOL (0)
+#define SUNXI_DAC_TUNE (0x14)
+#define SUNXI_DAC_DEBUG (0x18)
+
+/* Codec ADC register offsets and bit fields */
+#define SUNXI_ADC_FIFOC (0x1c)
+#define SUNXI_ADC_FIFOC_EN_AD (28)
+#define SUNXI_ADC_FIFOC_RX_FIFO_MODE (24)
+#define SUNXI_ADC_FIFOC_RX_TRIG_LEVEL (8)
+#define SUNXI_ADC_FIFOC_MONO_EN (7)
+#define SUNXI_ADC_FIFOC_RX_SAMPLE_BITS (6)
+#define SUNXI_ADC_FIFOC_ADC_DRQ_EN (4)
+#define SUNXI_ADC_FIFOC_FIFO_FLUSH (0)
+#define SUNXI_ADC_FIFOS (0x20)
+#define SUNXI_ADC_RXDATA (0x24)
+#define SUNXI_ADC_ACTL (0x28)
+#define SUNXI_ADC_ACTL_ADCREN (31)
+#define SUNXI_ADC_ACTL_ADCLEN (30)
+#define SUNXI_ADC_ACTL_PREG1EN (29)
+#define SUNXI_ADC_ACTL_PREG2EN (28)
+#define SUNXI_ADC_ACTL_VMICEN (27)
+#define SUNXI_ADC_ACTL_VADCG (20)
+#define SUNXI_ADC_ACTL_ADCIS (17)
+#define SUNXI_ADC_ACTL_PA_EN (4)
+#define SUNXI_ADC_ACTL_DDE (3)
+#define SUNXI_ADC_DEBUG (0x2c)
+
+/* Other various ADC registers */
+#define SUNXI_DAC_TXCNT (0x30)
+#define SUNXI_ADC_RXCNT (0x34)
+#define SUNXI_AC_SYS_VERI (0x38)
+#define SUNXI_AC_MIC_PHONE_CAL (0x3c)
+
+/* Supported SoC families - used for quirks */
+enum sunxi_soc_family {
+ SUN4IA, /* A10 SoC - revision A */
+ SUN4I, /* A10 SoC - later revisions */
+ SUN5I, /* A10S/A13 SoCs */
+ SUN7I, /* A20 SoC */
+};
+
+struct sunxi_priv {
+ struct regmap *regmap;
+ struct clk *clk_apb, *clk_module;
+
+ enum sunxi_soc_family revision;
+
+ struct snd_dmaengine_dai_dma_data playback_dma_data;
+ struct snd_dmaengine_dai_dma_data capture_dma_data;
+};
+
+static void sunxi_codec_play_start(struct sunxi_priv *priv)
+{
+ /* TODO: see if we need to drive PA GPIO high */
+
+ /* flush TX FIFO */
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_FIFO_FLUSH, 0x1 << SUNXI_DAC_FIFOC_FIFO_FLUSH);
+
+ /* enable DAC DRQ */
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_DAC_DRQ_EN, 0x1 << SUNXI_DAC_FIFOC_DAC_DRQ_EN);
+}
+
+static void sunxi_codec_play_stop(struct sunxi_priv *priv)
+{
+ /* TODO: see if we need to drive PA GPIO low */
+
+ /* disable DAC DRQ */
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_DAC_DRQ_EN, 0x0 << SUNXI_DAC_FIFOC_DAC_DRQ_EN);
+}
+
+static void sunxi_codec_capture_start(struct sunxi_priv *priv)
+{
+ /* TODO: see if we need to drive PA GPIO high */
+
+ /* enable ADC DRQ */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_ADC_DRQ_EN, 0x1 << SUNXI_ADC_FIFOC_ADC_DRQ_EN);
+}
+
+static void sunxi_codec_capture_stop(struct sunxi_priv *priv)
+{
+ /* disable ADC DRQ */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_ADC_DRQ_EN, 0x0 << SUNXI_ADC_FIFOC_ADC_DRQ_EN);
+
+ /* enable mic1 PA */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x1 << SUNXI_ADC_ACTL_PREG1EN, 0x0 << SUNXI_ADC_ACTL_PREG1EN);
+
+ /* enable VMIC */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x1 << SUNXI_ADC_ACTL_VMICEN, 0x0 << SUNXI_ADC_ACTL_VMICEN);
+ if (priv->revision == SUN7I) {
+ /* TODO: undocumented */
+ regmap_update_bits(priv->regmap, SUNXI_DAC_TUNE, 0x3 << 8, 0x0 << 8);
+ }
+
+ /* enable ADC digital */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_EN_AD, 0x0 << SUNXI_ADC_FIFOC_EN_AD);
+
+ /* set RX FIFO mode */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_RX_FIFO_MODE, 0x0 << SUNXI_ADC_FIFOC_RX_FIFO_MODE);
+
+ /* flush RX FIFO */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_FIFO_FLUSH, 0x0 << SUNXI_ADC_FIFOC_FIFO_FLUSH);
+
+ /* enable adc1 analog */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x3 << SUNXI_ADC_ACTL_ADCLEN, 0x0 << SUNXI_ADC_ACTL_ADCLEN);
+}
+
+static int sunxi_codec_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sunxi_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ sunxi_codec_capture_start(priv);
+ else
+ sunxi_codec_play_start(priv);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ sunxi_codec_capture_stop(priv);
+ else
+ sunxi_codec_play_stop(priv);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int sunxi_codec_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sunxi_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_FIFO_FLUSH, 0x1 << SUNXI_DAC_FIFOC_FIFO_FLUSH);
+
+ /* set TX FIFO send DRQ level */
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x3f << SUNXI_DAC_FIFOC_TX_TRIG_LEVEL, 0xf << SUNXI_DAC_FIFOC_TX_TRIG_LEVEL);
+ if (substream->runtime->rate > 32000) {
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_FIR_VERSION, 0x0 << SUNXI_DAC_FIFOC_FIR_VERSION);
+ } else {
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_FIR_VERSION, 0x1 << SUNXI_DAC_FIFOC_FIR_VERSION);
+ }
+
+ /* set TX FIFO MODE - 0 works for both 16 and 24 bits */
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_TX_FIFO_MODE, 0x0 << SUNXI_DAC_FIFOC_TX_FIFO_MODE);
+
+ /* send last sample when DAC FIFO under run */
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_SEND_LASAT, 0x0 << SUNXI_DAC_FIFOC_SEND_LASAT);
+ } else {
+ /* enable mic1 PA */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x1 << SUNXI_ADC_ACTL_PREG1EN, 0x1 << SUNXI_ADC_ACTL_PREG1EN);
+
+ /* mic1 gain 32dB */ /* FIXME - makes no sense */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x3 << 25, 0x1 << 25);
+
+ /* enable VMIC */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x1 << SUNXI_ADC_ACTL_VMICEN, 0x1 << SUNXI_ADC_ACTL_VMICEN);
+
+ if (priv->revision == SUN7I) {
+ /* boost up record effect */
+ regmap_update_bits(priv->regmap, SUNXI_DAC_TUNE, 0x3 << 8, 0x1 << 8);
+ }
+
+ /* enable ADC digital */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_EN_AD, 0x1 << SUNXI_ADC_FIFOC_EN_AD);
+
+ /* set RX FIFO mode */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_RX_FIFO_MODE, 0x1 << SUNXI_ADC_FIFOC_RX_FIFO_MODE);
+
+ /* flush RX FIFO */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_FIFO_FLUSH, 0x1 << SUNXI_ADC_FIFOC_FIFO_FLUSH);
+
+ /* set RX FIFO rec drq level */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0xf << SUNXI_ADC_FIFOC_RX_TRIG_LEVEL, 0x7 << SUNXI_ADC_FIFOC_RX_TRIG_LEVEL);
+
+ /* enable adc1 analog */
+ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x3 << SUNXI_ADC_ACTL_ADCLEN, 0x3 << SUNXI_ADC_ACTL_ADCLEN);
+ }
+
+ return 0;
+}
+
+static int sunxi_codec_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sunxi_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+ int is_mono = !!(params_channels(params) == 1);
+ int is_24bit = !!(hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min == 32);
+ unsigned int rate = params_rate(params);
+ unsigned int hwrate;
+
+ switch (rate) {
+ case 176400:
+ case 88200:
+ case 44100:
+ case 33075:
+ case 22050:
+ case 14700:
+ case 11025:
+ case 7350:
+ default:
+ clk_set_rate(priv->clk_module, 22579200);
+ break;
+ case 192000:
+ case 96000:
+ case 48000:
+ case 32000:
+ case 24000:
+ case 16000:
+ case 12000:
+ case 8000:
+ clk_set_rate(priv->clk_module, 24576000);
+ break;
+ }
+
+ switch (rate) {
+ case 192000:
+ case 176400:
+ hwrate = 6;
+ break;
+ case 96000:
+ case 88200:
+ hwrate = 7;
+ break;
+ default:
+ case 48000:
+ case 44100:
+ hwrate = 0;
+ break;
+ case 32000:
+ case 33075:
+ hwrate = 1;
+ break;
+ case 24000:
+ case 22050:
+ hwrate = 2;
+ break;
+ case 16000:
+ case 14700:
+ hwrate = 3;
+ break;
+ case 12000:
+ case 11025:
+ hwrate = 4;
+ break;
+ case 8000:
+ case 7350:
+ hwrate = 5;
+ break;
+ }
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 7 << SUNXI_DAC_FIFOC_DAC_FS, hwrate << SUNXI_DAC_FIFOC_DAC_FS);
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_MONO_EN, is_mono << SUNXI_DAC_FIFOC_MONO_EN);
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_TX_SAMPLE_BITS, is_24bit << SUNXI_DAC_FIFOC_TX_SAMPLE_BITS);
+ if (is_24bit)
+ priv->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ else
+ priv->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+ } else {
+ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 7 << SUNXI_DAC_FIFOC_DAC_FS, hwrate << SUNXI_DAC_FIFOC_DAC_FS);
+ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 1 << SUNXI_ADC_FIFOC_MONO_EN, is_mono << SUNXI_ADC_FIFOC_MONO_EN);
+ }
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new sun7i_dac_ctls[] = {
+ /*SUNXI_DAC_ACTL = 0x10,PAVOL*/
+ SOC_SINGLE("Master Playback Volume", SUNXI_DAC_ACTL, 0, 0x3f, 0),
+ SOC_SINGLE("Playback Switch", SUNXI_DAC_ACTL, 6, 1, 0), /* Global output switch */
+ SOC_SINGLE("FmL Switch", SUNXI_DAC_ACTL, 17, 1, 0), /* FM left switch */
+ SOC_SINGLE("FmR Switch", SUNXI_DAC_ACTL, 16, 1, 0), /* FM right switch */
+ SOC_SINGLE("LineL Switch", SUNXI_DAC_ACTL, 19, 1, 0), /* Line left switch */
+ SOC_SINGLE("LineR Switch", SUNXI_DAC_ACTL, 18, 1, 0), /* Line right switch */
+ SOC_SINGLE("Ldac Left Mixer", SUNXI_DAC_ACTL, 15, 1, 0),
+ SOC_SINGLE("Rdac Right Mixer", SUNXI_DAC_ACTL, 14, 1, 0),
+ SOC_SINGLE("Ldac Right Mixer", SUNXI_DAC_ACTL, 13, 1, 0),
+ SOC_SINGLE("Mic Input Mux", SUNXI_DAC_ACTL, 9, 15, 0), /* from bit 9 to bit 12. Microphone input mute */
+ SOC_SINGLE("MIC output volume", SUNXI_DAC_ACTL, 20, 7, 0),
+ /* FM Input to output mixer Gain Control
+ * From -4.5db to 6db,1.5db/step,default is 0db
+ * -4.5db:0x0,-3.0db:0x1,-1.5db:0x2,0db:0x3
+ * 1.5db:0x4,3.0db:0x5,4.5db:0x6,6db:0x7
+ */
+ SOC_SINGLE("Fm output Volume", SUNXI_DAC_ACTL, 23, 7, 0),
+ /* Line-in gain stage to output mixer Gain Control
+ * 0:-1.5db,1:0db
+ */
+ SOC_SINGLE("Line output Volume", SUNXI_DAC_ACTL, 26, 1, 0),
+
+ SOC_SINGLE("Master Capture Mute", SUNXI_ADC_ACTL, 4, 1, 0),
+ SOC_SINGLE("Right Capture Mute", SUNXI_ADC_ACTL, 31, 1, 0),
+ SOC_SINGLE("Left Capture Mute", SUNXI_ADC_ACTL, 30, 1, 0),
+ SOC_SINGLE("Linein Pre-AMP", SUNXI_ADC_ACTL, 13, 7, 0),
+ SOC_SINGLE("LINEIN APM Volume", SUNXI_AC_MIC_PHONE_CAL, 13, 0x7, 0),
+ /* ADC Input Gain Control, capture volume
+ * 000:-4.5db,001:-3db,010:-1.5db,011:0db,100:1.5db,101:3db,110:4.5db,111:6db
+ */
+ SOC_SINGLE("Capture Volume", SUNXI_ADC_ACTL, 20, 7, 0),
+ /*
+ * MIC2 pre-amplifier Gain Control
+ * 00:0db,01:35db,10:38db,11:41db
+ */
+ SOC_SINGLE("MicL Volume", SUNXI_ADC_ACTL, 25, 3, 0), /* Microphone left volume */
+ SOC_SINGLE("MicR Volume", SUNXI_ADC_ACTL, 23, 3, 0), /* Microphone right volume */
+ SOC_SINGLE("Mic2 Boost", SUNXI_ADC_ACTL, 29, 1, 0),
+ SOC_SINGLE("Mic1 Boost", SUNXI_ADC_ACTL, 28, 1, 0),
+ SOC_SINGLE("Mic Power", SUNXI_ADC_ACTL, 27, 1, 0),
+ SOC_SINGLE("ADC Input Mux", SUNXI_ADC_ACTL, 17, 7, 0), /* ADC input mute */
+ SOC_SINGLE("Mic2 gain Volume", SUNXI_AC_MIC_PHONE_CAL, 26, 7, 0),
+ /*
+ * MIC1 pre-amplifier Gain Control
+ * 00:0db,01:35db,10:38db,11:41db
+ */
+ SOC_SINGLE("Mic1 gain Volume", SUNXI_AC_MIC_PHONE_CAL, 29, 3, 0),
+};
+
+static int sunxi_codec_dai_probe(struct snd_soc_dai *dai)
+{
+ struct snd_soc_card *card = snd_soc_dai_get_drvdata(dai);
+ struct sunxi_priv *priv = snd_soc_card_get_drvdata(card);
+
+ snd_soc_dai_init_dma_data(dai, &priv->playback_dma_data, &priv->capture_dma_data);
+
+ return 0;
+}
+
+static void sunxi_codec_init(struct sunxi_priv *priv)
+{
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_FIR_VERSION, 1 << SUNXI_DAC_FIFOC_FIR_VERSION);
+
+ /* set digital volume to maximum */
+ if (priv->revision == SUN4IA)
+ regmap_update_bits(priv->regmap, SUNXI_DAC_DPC, 0x3F << SUNXI_DAC_DPC_DVOL, 0 << SUNXI_DAC_DPC_DVOL);
+
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 3 << SUNXI_DAC_FIFOC_DRQ_CLR_CNT, 3 << SUNXI_DAC_FIFOC_DRQ_CLR_CNT);
+
+ /* set volume */ /* TODO: is A10A inverted? */
+ if (priv->revision == SUN4IA)
+ regmap_update_bits(priv->regmap, SUNXI_DAC_ACTL, 0x3f << SUNXI_DAC_ACTL_PA_VOL, 1 << SUNXI_DAC_ACTL_PA_VOL);
+ else
+ regmap_update_bits(priv->regmap, SUNXI_DAC_ACTL, 0x3f << SUNXI_DAC_ACTL_PA_VOL, 0x3b << SUNXI_DAC_ACTL_PA_VOL);
+}
+
+static int sunxi_codec_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sunxi_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+
+ sunxi_codec_init(priv);
+
+ return clk_prepare_enable(priv->clk_module);
+}
+
+static void sunxi_codec_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sunxi_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+
+ clk_disable_unprepare(priv->clk_module);
+}
+
+/*** Codec DAI ***/
+
+static const struct snd_soc_dai_ops sunxi_codec_dai_ops = {
+ .startup = sunxi_codec_startup,
+ .shutdown = sunxi_codec_shutdown,
+ .trigger = sunxi_codec_trigger,
+ .hw_params = sunxi_codec_hw_params,
+ .prepare = sunxi_codec_prepare,
+};
+
+static struct snd_soc_dai_driver sunxi_codec_dai = {
+ .name = "Codec",
+ .playback = {
+ .stream_name = "Codec Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rate_min = 8000,
+ .rate_max = 192000,
+ .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_11025 |\
+ SNDRV_PCM_RATE_22050| SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
+ SNDRV_PCM_RATE_48000 |SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000 |\
+ SNDRV_PCM_RATE_KNOT),
+ .formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE),
+ .sig_bits = 24,
+ },
+ .capture = {
+ .stream_name = "Codec Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rate_min = 8000,
+ .rate_max = 192000,
+ .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_11025 |\
+ SNDRV_PCM_RATE_22050| SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
+ SNDRV_PCM_RATE_48000 |SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000 |\
+ SNDRV_PCM_RATE_KNOT),
+ .formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE),
+ .sig_bits = 24,
+ },
+ .ops = &sunxi_codec_dai_ops,
+};
+
+/*** Codec ***/
+
+static const struct snd_kcontrol_new sunxi_pa =
+ SOC_DAPM_SINGLE("PA Switch", SUNXI_ADC_ACTL, SUNXI_ADC_ACTL_PA_EN, 1, 0);
+
+static const struct snd_kcontrol_new sunxi_pa_mute =
+ SOC_DAPM_SINGLE("PA Mute Switch", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_PA_MUTE, 1, 0);
+
+static DECLARE_TLV_DB_SCALE(sunxi_pa_volume_scale, -6300, 100, 1);
+
+static const struct snd_kcontrol_new sunxi_codec_widgets[] = {
+ SOC_SINGLE_TLV("PA Volume", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_PA_VOL,
+ 0x3F, 0, sunxi_pa_volume_scale),
+};
+
+static const char *right_output_mixer_text[] = { "Disabled", "Left", "Right" };
+static const unsigned int right_output_mixer_values[] = { 0x0, 0x1, 0x2 };
+static SOC_VALUE_ENUM_SINGLE_DECL(right_output_mixer, SUNXI_DAC_ACTL,
+ SUNXI_DAC_ACTL_LDACRMIXS, 0x3,
+ right_output_mixer_text,
+ right_output_mixer_values);
+
+static const char *left_output_mixer_text[] = { "Disabled", "Left" };
+static const unsigned int left_output_mixer_values[] = { 0x0, 0x1 };
+static SOC_VALUE_ENUM_SINGLE_DECL(left_output_mixer, SUNXI_DAC_ACTL,
+ SUNXI_DAC_ACTL_LDACLMIXS, 0x1,
+ left_output_mixer_text,
+ left_output_mixer_values);
+
+static const struct snd_kcontrol_new right_mixer =
+ SOC_DAPM_ENUM("Right Mixer", right_output_mixer);
+
+static const struct snd_kcontrol_new left_mixer =
+ SOC_DAPM_ENUM("Left Mixer", left_output_mixer);
+
+static const struct snd_kcontrol_new sunxi_mixer =
+ SOC_DAPM_SINGLE("Mixer Switch", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_MIXEN, 1, 0);
+
+static const char *sunxi_dac_output_text[] = { "Muted", "Mixed", "Direct" };
+static const unsigned int sunxi_dac_output_values[] = { 0x0, 0x1, 0x2 };
+static SOC_VALUE_ENUM_SINGLE_DECL(dac_output_mux, SUNXI_DAC_ACTL,
+ SUNXI_DAC_ACTL_MIXPAS, 0x3,
+ sunxi_dac_output_text,
+ sunxi_dac_output_values);
+
+static const struct snd_kcontrol_new sunxi_dac_output =
+ SOC_DAPM_ENUM("DAC Output", dac_output_mux);
+
+static const struct snd_soc_dapm_widget codec_dapm_widgets[] = {
+ /* Digital parts of the DACs */
+ SND_SOC_DAPM_SUPPLY("DAC", SUNXI_DAC_DPC, SUNXI_DAC_DPC_EN_DA, 0, NULL, 0),
+
+ /* Analog parts of the DACs */
+ SND_SOC_DAPM_DAC("Left DAC", NULL, SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_DACAENL, 0),
+ SND_SOC_DAPM_DAC("Right DAC", NULL, SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_DACAENR, 0),
+
+ SND_SOC_DAPM_SWITCH("PA", SUNXI_ADC_ACTL, SUNXI_ADC_ACTL_PA_EN, 0, &sunxi_pa),
+ SND_SOC_DAPM_SWITCH("PA Mute", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_PA_MUTE, 0, &sunxi_pa_mute),
+
+ SND_SOC_DAPM_MUX("Right Mixer", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_LDACRMIXS, 0, &right_mixer),
+ SND_SOC_DAPM_MUX("Left Mixer", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_LDACLMIXS, 0, &left_mixer),
+ SND_SOC_DAPM_SWITCH("Mixer", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_MIXEN, 0, &sunxi_mixer),
+
+ SND_SOC_DAPM_MUX("DAC Output", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_MIXPAS, 0, &sunxi_dac_output),
+
+ SND_SOC_DAPM_OUTPUT("Mic Bias"),
+ SND_SOC_DAPM_OUTPUT("HP Right"),
+ SND_SOC_DAPM_OUTPUT("HP Left"),
+ SND_SOC_DAPM_INPUT("MIC_IN"),
+ SND_SOC_DAPM_INPUT("LINE_IN"),
+};
+
+static const struct snd_soc_dapm_route codec_dapm_routes[] = {
+ /* DAC block */
+ { "Left DAC", NULL, "Codec Playback" },
+ { "Right DAC", NULL, "Codec Playback" },
+ { "Left DAC", NULL, "DAC" },
+ { "Right DAC", NULL, "DAC" },
+
+ /* DAC -> PA path */
+ { "DAC Output", "Direct", "Left DAC" },
+ { "DAC Output", "Direct", "Right DAC" },
+ { "PA", NULL, "DAC Output"},
+
+ /* DAC -> MIX -> PA path */
+ { "Left Mixer", "Left", "Left DAC" },
+ { "Right Mixer", "Right", "Right DAC" },
+ { "Mixer", NULL, "Left Mixer" },
+ { "Mixer", NULL, "Right Mixer" },
+ { "DAC Output", "Mixed", "Mixer" },
+ { "PA", NULL, "DAC Output" },
+
+ /* PA -> HP path */
+ { "PA Mute", NULL, "PA" },
+ { "HP Right", NULL, "PA Mute" },
+ { "HP Left", NULL, "PA Mute" },
+};
+
+static struct snd_soc_codec_driver sunxi_codec = {
+ .controls = sunxi_codec_widgets,
+ .num_controls = ARRAY_SIZE(sunxi_codec_widgets),
+ .dapm_widgets = codec_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(codec_dapm_widgets),
+ .dapm_routes = codec_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(codec_dapm_routes),
+};
+
+/*** Board routing ***/
+/* TODO: do this with DT */
+
+static const struct snd_soc_dapm_widget sunxi_board_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+};
+
+static const struct snd_soc_dapm_route sunxi_board_routing[] = {
+ { "Headphone Jack", NULL, "HP Right" },
+ { "Headphone Jack", NULL, "HP Left" },
+};
+
+/*** Card and DAI Link ***/
+
+static struct snd_soc_dai_link cdc_dai = {
+ .name = "cdc",
+
+ .stream_name = "CDC PCM",
+ .codec_dai_name = "Codec",
+ .cpu_dai_name = "1c22c00.codec",
+ .codec_name = "1c22c00.codec",
+ .platform_name = "1c22c00.codec",
+ .dai_fmt = SND_SOC_DAIFMT_I2S,
+};
+
+static struct snd_soc_card snd_soc_sunxi_codec = {
+ .name = "sunxi-codec",
+ .owner = THIS_MODULE,
+ .dai_link = &cdc_dai,
+ .num_links = 1,
+ .dapm_widgets = sunxi_board_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(sunxi_board_dapm_widgets),
+ .dapm_routes = sunxi_board_routing,
+ .num_dapm_routes = ARRAY_SIZE(sunxi_board_routing),
+};
+
+/*** CPU DAI ***/
+
+static const struct snd_soc_component_driver sunxi_codec_component = {
+ .name = "sunxi-codec",
+};
+
+#define SUNXI_RATES SNDRV_PCM_RATE_8000_192000
+#define SUNXI_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_driver dummy_cpu_dai = {
+ .name = "sunxi-cpu-dai",
+ .probe = sunxi_codec_dai_probe,
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SUNXI_RATES,
+ .formats = SUNXI_FORMATS,
+ .sig_bits = 24,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SUNXI_RATES,
+ .formats = SUNXI_FORMATS,
+ .sig_bits = 24,
+ },
+};
+
+static const struct regmap_config sunxi_codec_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = SUNXI_AC_MIC_PHONE_CAL,
+};
+
+static const struct of_device_id sunxi_codec_of_match[] = {
+ { .compatible = "allwinner,sun4i-a10a-codec", .data = (void *)SUN4IA},
+ { .compatible = "allwinner,sun4i-a10-codec", .data = (void *)SUN4I},
+ { .compatible = "allwinner,sun5i-a13-codec", .data = (void *)SUN5I},
+ { .compatible = "allwinner,sun7i-a20-codec", .data = (void *)SUN7I},
+ {}
+};
+MODULE_DEVICE_TABLE(of, sunxi_codec_of_match);
+
+static int sunxi_codec_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct snd_soc_card *card = &snd_soc_sunxi_codec;
+ const struct of_device_id *of_id;
+ struct device *dev = &pdev->dev;
+ struct sunxi_priv *priv;
+ struct resource *res;
+ void __iomem *base;
+ int ret;
+
+ if (!of_device_is_available(np))
+ return -ENODEV;
+
+ of_id = of_match_device(sunxi_codec_of_match, dev);
+ if (!of_id)
+ return -EINVAL;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ card->dev = &pdev->dev;
+ platform_set_drvdata(pdev, card);
+ snd_soc_card_set_drvdata(card, priv);
+
+ priv->revision = (enum sunxi_soc_family)of_id->data;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ priv->regmap = devm_regmap_init_mmio(&pdev->dev, base,
+ &sunxi_codec_regmap_config);
+ if (IS_ERR(priv->regmap))
+ return PTR_ERR(priv->regmap);
+
+ /* Get the clocks from the DT */
+ priv->clk_apb = devm_clk_get(dev, "apb");
+ if (IS_ERR(priv->clk_apb)) {
+ dev_err(dev, "failed to get apb clock\n");
+ return PTR_ERR(priv->clk_apb);
+ }
+ priv->clk_module = devm_clk_get(dev, "codec");
+ if (IS_ERR(priv->clk_module)) {
+ dev_err(dev, "failed to get codec clock\n");
+ return PTR_ERR(priv->clk_module);
+ }
+
+ /* Enable the clock on a basic rate */
+ ret = clk_set_rate(priv->clk_module, 24576000);
+ if (ret) {
+ dev_err(dev, "failed to set codec base clock rate\n");
+ return ret;
+ }
+
+ /* Enable the bus clock */
+ if (clk_prepare_enable(priv->clk_apb)) {
+ dev_err(dev, "failed to enable apb clock\n");
+ clk_disable_unprepare(priv->clk_module);
+ return -EINVAL;
+ }
+
+ /* DMA configuration for TX FIFO */
+ priv->playback_dma_data.addr = res->start + SUNXI_DAC_TXDATA;
+ priv->playback_dma_data.maxburst = 4;
+ priv->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+
+ /* DMA configuration for RX FIFO */
+ priv->capture_dma_data.addr = res->start + SUNXI_ADC_RXDATA;
+ priv->capture_dma_data.maxburst = 4;
+ priv->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+
+ ret = snd_soc_register_codec(&pdev->dev, &sunxi_codec, &sunxi_codec_dai, 1);
+
+ ret = devm_snd_soc_register_component(&pdev->dev, &sunxi_codec_component, &dummy_cpu_dai, 1);
+ if (ret)
+ goto err_clk_disable;
+
+ ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+ if (ret)
+ goto err_clk_disable;
+
+ sunxi_codec_init(priv);
+
+ ret = snd_soc_register_card(card);
+ if (ret) {
+ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+ goto err_fini_utils;
+ }
+
+ ret = snd_soc_of_parse_audio_routing(card, "routing");
+ if (ret)
+ goto err;
+
+ return 0;
+
+err_fini_utils:
+err:
+err_clk_disable:
+ clk_disable_unprepare(priv->clk_apb);
+ return ret;
+}
+
+static int sunxi_codec_remove(struct platform_device *pdev)
+{
+ struct sunxi_priv *priv = platform_get_drvdata(pdev);
+
+ clk_disable_unprepare(priv->clk_apb);
+ clk_disable_unprepare(priv->clk_module);
+
+ return 0;
+}
+
+static struct platform_driver sunxi_codec_driver = {
+ .driver = {
+ .name = "sunxi-codec",
+ .owner = THIS_MODULE,
+ .of_match_table = sunxi_codec_of_match,
+ },
+ .probe = sunxi_codec_probe,
+ .remove = sunxi_codec_remove,
+};
+module_platform_driver(sunxi_codec_driver);
+
+MODULE_DESCRIPTION("sunxi codec ASoC driver");
+MODULE_AUTHOR("Emilio López <emilio@elopez.com.ar>");
+MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
+MODULE_LICENSE("GPL");
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