svn commit: r295657 - in head/sys: arm/allwinner arm/conf boot/fdt/dts/arm
Andrew Turner
andrew at FreeBSD.org
Tue Feb 16 11:45:47 UTC 2016
Author: andrew
Date: Tue Feb 16 11:45:46 2016
New Revision: 295657
URL: https://svnweb.freebsd.org/changeset/base/295657
Log:
Add an analog audio driver for the audio codec found on the Allwinner
A10/A20 SoC. Based loosely on the submitters NetBSD driver, tested on
Cubieboard 2. Playback and capture are supported.
Submitted by: Jared McNeill <jmcneill at invisible.ca>
Differential Revision: https://reviews.freebsd.org/D5202
Added:
head/sys/arm/allwinner/a10_codec.c (contents, props changed)
Modified:
head/sys/arm/allwinner/files.allwinner
head/sys/arm/conf/A20
head/sys/boot/fdt/dts/arm/sun7i-a20.dtsi
Added: head/sys/arm/allwinner/a10_codec.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/allwinner/a10_codec.c Tue Feb 16 11:45:46 2016 (r295657)
@@ -0,0 +1,850 @@
+/*-
+ * Copyright (c) 2014-2016 Jared D. McNeill <jmcneill at invisible.ca>
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Allwinner A10/A20 Audio Codec
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/rman.h>
+#include <sys/condvar.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/gpio.h>
+
+#include <machine/bus.h>
+
+#include <dev/sound/pcm/sound.h>
+#include <dev/sound/chip.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <arm/allwinner/a10_clk.h>
+
+#include "sunxi_dma_if.h"
+#include "mixer_if.h"
+#include "gpio_if.h"
+
+#define TX_TRIG_LEVEL 0xf
+#define RX_TRIG_LEVEL 0x7
+#define DRQ_CLR_CNT 0x3
+
+#define AC_DAC_DPC 0x00
+#define DAC_DPC_EN_DA 0x80000000
+#define AC_DAC_FIFOC 0x04
+#define DAC_FIFOC_FS_SHIFT 29
+#define DAC_FIFOC_FS_MASK (7U << DAC_FIFOC_FS_SHIFT)
+#define DAC_FS_48KHZ 0
+#define DAC_FS_32KHZ 1
+#define DAC_FS_24KHZ 2
+#define DAC_FS_16KHZ 3
+#define DAC_FS_12KHZ 4
+#define DAC_FS_8KHZ 5
+#define DAC_FS_192KHZ 6
+#define DAC_FS_96KHZ 7
+#define DAC_FIFOC_FIFO_MODE_SHIFT 24
+#define DAC_FIFOC_FIFO_MODE_MASK (3U << DAC_FIFOC_FIFO_MODE_SHIFT)
+#define FIFO_MODE_24_31_8 0
+#define FIFO_MODE_16_31_16 0
+#define FIFO_MODE_16_15_0 1
+#define DAC_FIFOC_DRQ_CLR_CNT_SHIFT 21
+#define DAC_FIFOC_DRQ_CLR_CNT_MASK (3U << DAC_FIFOC_DRQ_CLR_CNT_SHIFT)
+#define DAC_FIFOC_TX_TRIG_LEVEL_SHIFT 8
+#define DAC_FIFOC_TX_TRIG_LEVEL_MASK (0x7f << DAC_FIFOC_TX_TRIG_LEVEL_SHIFT)
+#define DAC_FIFOC_MONO_EN (1U << 6)
+#define DAC_FIFOC_TX_BITS (1U << 5)
+#define DAC_FIFOC_DRQ_EN (1U << 4)
+#define DAC_FIFOC_FIFO_FLUSH (1U << 0)
+#define AC_DAC_FIFOS 0x08
+#define AC_DAC_TXDATA 0x0c
+#define AC_DAC_ACTL 0x10
+#define DAC_ACTL_DACAREN (1U << 31)
+#define DAC_ACTL_DACALEN (1U << 30)
+#define DAC_ACTL_MIXEN (1U << 29)
+#define DAC_ACTL_DACPAS (1U << 8)
+#define DAC_ACTL_PAMUTE (1U << 6)
+#define DAC_ACTL_PAVOL_SHIFT 0
+#define DAC_ACTL_PAVOL_MASK (0x3f << DAC_ACTL_PAVOL_SHIFT)
+#define AC_ADC_FIFOC 0x1c
+#define ADC_FIFOC_FS_SHIFT 29
+#define ADC_FIFOC_FS_MASK (7U << ADC_FIFOC_FS_SHIFT)
+#define ADC_FS_48KHZ 0
+#define ADC_FIFOC_EN_AD (1U << 28)
+#define ADC_FIFOC_RX_FIFO_MODE (1U << 24)
+#define ADC_FIFOC_RX_TRIG_LEVEL_SHIFT 8
+#define ADC_FIFOC_RX_TRIG_LEVEL_MASK (0x1f << ADC_FIFOC_RX_TRIG_LEVEL_SHIFT)
+#define ADC_FIFOC_MONO_EN (1U << 7)
+#define ADC_FIFOC_RX_BITS (1U << 6)
+#define ADC_FIFOC_DRQ_EN (1U << 4)
+#define ADC_FIFOC_FIFO_FLUSH (1U << 1)
+#define AC_ADC_FIFOS 0x20
+#define AC_ADC_RXDATA 0x24
+#define AC_ADC_ACTL 0x28
+#define ADC_ACTL_ADCREN (1U << 31)
+#define ADC_ACTL_ADCLEN (1U << 30)
+#define ADC_ACTL_PREG1EN (1U << 29)
+#define ADC_ACTL_PREG2EN (1U << 28)
+#define ADC_ACTL_VMICEN (1U << 27)
+#define ADC_ACTL_ADCG_SHIFT 20
+#define ADC_ACTL_ADCG_MASK (7U << ADC_ACTL_ADCG_SHIFT)
+#define ADC_ACTL_ADCIS_SHIFT 17
+#define ADC_ACTL_ADCIS_MASK (7U << ADC_ACTL_ADCIS_SHIFT)
+#define ADC_IS_LINEIN 0
+#define ADC_IS_FMIN 1
+#define ADC_IS_MIC1 2
+#define ADC_IS_MIC2 3
+#define ADC_IS_MIC1_L_MIC2_R 4
+#define ADC_IS_MIC1_LR_MIC2_LR 5
+#define ADC_IS_OMIX 6
+#define ADC_IS_LINEIN_L_MIC1_R 7
+#define ADC_ACTL_LNRDF (1U << 16)
+#define ADC_ACTL_LNPREG_SHIFT 13
+#define ADC_ACTL_LNPREG_MASK (7U << ADC_ACTL_LNPREG_SHIFT)
+#define ADC_ACTL_PA_EN (1U << 4)
+#define ADC_ACTL_DDE (1U << 3)
+#define AC_DAC_CNT 0x30
+#define AC_ADC_CNT 0x34
+
+static uint32_t a10codec_fmt[] = {
+ SND_FORMAT(AFMT_S16_LE, 1, 0),
+ SND_FORMAT(AFMT_S16_LE, 2, 0),
+ 0
+};
+
+static struct pcmchan_caps a10codec_pcaps = { 8000, 192000, a10codec_fmt, 0 };
+static struct pcmchan_caps a10codec_rcaps = { 8000, 48000, a10codec_fmt, 0 };
+
+struct a10codec_info;
+
+struct a10codec_chinfo {
+ struct snd_dbuf *buffer;
+ struct pcm_channel *channel;
+ struct a10codec_info *parent;
+ bus_dmamap_t dmamap;
+ void *dmaaddr;
+ bus_addr_t physaddr;
+ bus_size_t fifo;
+ device_t dmac;
+ void *dmachan;
+
+ int dir;
+ int run;
+ uint32_t pos;
+ uint32_t format;
+ uint32_t blocksize;
+ uint32_t speed;
+};
+
+struct a10codec_info {
+ device_t dev;
+ struct resource *res[2];
+ struct mtx *lock;
+ bus_dma_tag_t dmat;
+ unsigned dmasize;
+ void *ih;
+
+ unsigned drqtype_codec;
+ unsigned drqtype_sdram;
+
+ struct a10codec_chinfo play;
+ struct a10codec_chinfo rec;
+};
+
+static struct resource_spec a10codec_spec[] = {
+ { SYS_RES_MEMORY, 0, RF_ACTIVE },
+ { SYS_RES_IRQ, 0, RF_ACTIVE },
+ { -1, 0 }
+};
+
+#define CODEC_READ(sc, reg) bus_read_4((sc)->res[0], (reg))
+#define CODEC_WRITE(sc, reg, val) bus_write_4((sc)->res[0], (reg), (val))
+
+/*
+ * Mixer interface
+ */
+
+static int
+a10codec_mixer_init(struct snd_mixer *m)
+{
+ struct a10codec_info *sc = mix_getdevinfo(m);
+ pcell_t prop[4];
+ phandle_t node;
+ device_t gpio;
+ uint32_t val;
+ ssize_t len;
+ int pin;
+
+ mix_setdevs(m, SOUND_MASK_VOLUME | SOUND_MASK_LINE | SOUND_MASK_RECLEV);
+ mix_setrecdevs(m, SOUND_MASK_LINE | SOUND_MASK_LINE1 | SOUND_MASK_MIC);
+
+ /* Unmute input source to PA */
+ val = CODEC_READ(sc, AC_DAC_ACTL);
+ val |= DAC_ACTL_PAMUTE;
+ CODEC_WRITE(sc, AC_DAC_ACTL, val);
+
+ /* Enable PA */
+ val = CODEC_READ(sc, AC_ADC_ACTL);
+ val |= ADC_ACTL_PA_EN;
+ CODEC_WRITE(sc, AC_ADC_ACTL, val);
+
+ /* Unmute PA */
+ node = ofw_bus_get_node(sc->dev);
+ len = OF_getencprop(node, "allwinner,pa-gpios", prop, sizeof(prop));
+ if (len > 0 && (len / sizeof(prop[0])) == 4) {
+ gpio = OF_device_from_xref(prop[0]);
+ if (gpio != NULL) {
+ pin = prop[1] * 32 + prop[2];
+ GPIO_PIN_SETFLAGS(gpio, pin, GPIO_PIN_OUTPUT);
+ GPIO_PIN_SET(gpio, pin, GPIO_PIN_LOW);
+ }
+ }
+
+ return (0);
+}
+
+static const struct a10codec_mixer {
+ unsigned reg;
+ unsigned mask;
+ unsigned shift;
+} a10codec_mixers[SOUND_MIXER_NRDEVICES] = {
+ [SOUND_MIXER_VOLUME] = { AC_DAC_ACTL, DAC_ACTL_PAVOL_MASK,
+ DAC_ACTL_PAVOL_SHIFT },
+ [SOUND_MIXER_LINE] = { AC_ADC_ACTL, ADC_ACTL_LNPREG_MASK,
+ ADC_ACTL_LNPREG_SHIFT },
+ [SOUND_MIXER_RECLEV] = { AC_ADC_ACTL, ADC_ACTL_ADCG_MASK,
+ ADC_ACTL_ADCG_SHIFT },
+};
+
+static int
+a10codec_mixer_set(struct snd_mixer *m, unsigned dev, unsigned left,
+ unsigned right)
+{
+ struct a10codec_info *sc = mix_getdevinfo(m);
+ uint32_t val;
+ unsigned nvol, max;
+
+ max = a10codec_mixers[dev].mask >> a10codec_mixers[dev].shift;
+ nvol = (left * max) / 100;
+
+ val = CODEC_READ(sc, a10codec_mixers[dev].reg);
+ val &= ~a10codec_mixers[dev].mask;
+ val |= (nvol << a10codec_mixers[dev].shift);
+ CODEC_WRITE(sc, a10codec_mixers[dev].reg, val);
+
+ left = right = (left * 100) / max;
+ return (left | (right << 8));
+}
+
+static uint32_t
+a10codec_mixer_setrecsrc(struct snd_mixer *m, uint32_t src)
+{
+ struct a10codec_info *sc = mix_getdevinfo(m);
+ uint32_t val;
+
+ val = CODEC_READ(sc, AC_ADC_ACTL);
+
+ switch (src) {
+ case SOUND_MASK_LINE: /* line-in */
+ val &= ~ADC_ACTL_ADCIS_MASK;
+ val |= (ADC_IS_LINEIN << ADC_ACTL_ADCIS_SHIFT);
+ break;
+ case SOUND_MASK_MIC: /* MIC1 */
+ val &= ~ADC_ACTL_ADCIS_MASK;
+ val |= (ADC_IS_MIC1 << ADC_ACTL_ADCIS_SHIFT);
+ break;
+ case SOUND_MASK_LINE1: /* MIC2 */
+ val &= ~ADC_ACTL_ADCIS_MASK;
+ val |= (ADC_IS_MIC2 << ADC_ACTL_ADCIS_SHIFT);
+ break;
+ default:
+ break;
+ }
+
+ CODEC_WRITE(sc, AC_ADC_ACTL, val);
+
+ switch ((val & ADC_ACTL_ADCIS_MASK) >> ADC_ACTL_ADCIS_SHIFT) {
+ case ADC_IS_LINEIN:
+ return (SOUND_MASK_LINE);
+ case ADC_IS_MIC1:
+ return (SOUND_MASK_MIC);
+ case ADC_IS_MIC2:
+ return (SOUND_MASK_LINE1);
+ default:
+ return (0);
+ }
+}
+
+static kobj_method_t a10codec_mixer_methods[] = {
+ KOBJMETHOD(mixer_init, a10codec_mixer_init),
+ KOBJMETHOD(mixer_set, a10codec_mixer_set),
+ KOBJMETHOD(mixer_setrecsrc, a10codec_mixer_setrecsrc),
+ KOBJMETHOD_END
+};
+MIXER_DECLARE(a10codec_mixer);
+
+
+/*
+ * Channel interface
+ */
+
+static void
+a10codec_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
+{
+ struct a10codec_chinfo *ch = arg;
+
+ if (error != 0)
+ return;
+
+ ch->physaddr = segs[0].ds_addr;
+}
+
+static void
+a10codec_transfer(struct a10codec_chinfo *ch)
+{
+ bus_addr_t src, dst;
+ int error;
+
+ if (ch->dir == PCMDIR_PLAY) {
+ src = ch->physaddr + ch->pos;
+ dst = ch->fifo;
+ } else {
+ src = ch->fifo;
+ dst = ch->physaddr + ch->pos;
+ }
+
+ error = SUNXI_DMA_TRANSFER(ch->dmac, ch->dmachan, src, dst,
+ ch->blocksize);
+ if (error) {
+ ch->run = 0;
+ device_printf(ch->parent->dev, "DMA transfer failed: %d\n",
+ error);
+ }
+}
+
+static void
+a10codec_dmaconfig(struct a10codec_chinfo *ch)
+{
+ struct a10codec_info *sc = ch->parent;
+ struct sunxi_dma_config conf;
+
+ memset(&conf, 0, sizeof(conf));
+ conf.src_width = conf.dst_width = 16;
+ conf.src_burst_len = conf.dst_burst_len = 4;
+
+ if (ch->dir == PCMDIR_PLAY) {
+ conf.dst_noincr = true;
+ conf.src_drqtype = sc->drqtype_sdram;
+ conf.dst_drqtype = sc->drqtype_codec;
+ } else {
+ conf.src_noincr = true;
+ conf.src_drqtype = sc->drqtype_codec;
+ conf.dst_drqtype = sc->drqtype_sdram;
+ }
+
+ SUNXI_DMA_SET_CONFIG(ch->dmac, ch->dmachan, &conf);
+}
+
+static void
+a10codec_dmaintr(void *priv)
+{
+ struct a10codec_chinfo *ch = priv;
+ unsigned bufsize;
+
+ bufsize = sndbuf_getsize(ch->buffer);
+
+ ch->pos += ch->blocksize;
+ if (ch->pos >= bufsize)
+ ch->pos -= bufsize;
+
+ if (ch->run) {
+ chn_intr(ch->channel);
+ a10codec_transfer(ch);
+ }
+}
+
+static unsigned
+a10codec_fs(struct a10codec_chinfo *ch)
+{
+ switch (ch->speed) {
+ case 48000:
+ return (DAC_FS_48KHZ);
+ case 24000:
+ return (DAC_FS_24KHZ);
+ case 12000:
+ return (DAC_FS_12KHZ);
+ case 192000:
+ return (DAC_FS_192KHZ);
+ case 32000:
+ return (DAC_FS_32KHZ);
+ case 16000:
+ return (DAC_FS_16KHZ);
+ case 8000:
+ return (DAC_FS_8KHZ);
+ case 96000:
+ return (DAC_FS_96KHZ);
+ default:
+ return (DAC_FS_48KHZ);
+ }
+}
+
+static void
+a10codec_start(struct a10codec_chinfo *ch)
+{
+ struct a10codec_info *sc = ch->parent;
+ uint32_t val;
+
+ ch->pos = 0;
+
+ if (ch->dir == PCMDIR_PLAY) {
+ /* Flush DAC FIFO */
+ CODEC_WRITE(sc, AC_DAC_FIFOC, DAC_FIFOC_FIFO_FLUSH);
+
+ /* Clear DAC FIFO status */
+ CODEC_WRITE(sc, AC_DAC_FIFOS, CODEC_READ(sc, AC_DAC_FIFOS));
+
+ /* Enable DAC analog left/right channels and output mixer */
+ val = CODEC_READ(sc, AC_DAC_ACTL);
+ val |= DAC_ACTL_DACAREN;
+ val |= DAC_ACTL_DACALEN;
+ val |= DAC_ACTL_DACPAS;
+ CODEC_WRITE(sc, AC_DAC_ACTL, val);
+
+ /* Configure DAC DMA channel */
+ a10codec_dmaconfig(ch);
+
+ /* Configure DAC FIFO */
+ CODEC_WRITE(sc, AC_DAC_FIFOC,
+ (AFMT_CHANNEL(ch->format) == 1 ? DAC_FIFOC_MONO_EN : 0) |
+ (a10codec_fs(ch) << DAC_FIFOC_FS_SHIFT) |
+ (FIFO_MODE_16_15_0 << DAC_FIFOC_FIFO_MODE_SHIFT) |
+ (DRQ_CLR_CNT << DAC_FIFOC_DRQ_CLR_CNT_SHIFT) |
+ (TX_TRIG_LEVEL << DAC_FIFOC_TX_TRIG_LEVEL_SHIFT));
+
+ /* Enable DAC DRQ */
+ val = CODEC_READ(sc, AC_DAC_FIFOC);
+ val |= DAC_FIFOC_DRQ_EN;
+ CODEC_WRITE(sc, AC_DAC_FIFOC, val);
+ } else {
+ /* Flush ADC FIFO */
+ CODEC_WRITE(sc, AC_ADC_FIFOC, ADC_FIFOC_FIFO_FLUSH);
+
+ /* Clear ADC FIFO status */
+ CODEC_WRITE(sc, AC_ADC_FIFOS, CODEC_READ(sc, AC_ADC_FIFOS));
+
+ /* Enable ADC analog left/right channels, MIC1 preamp,
+ * and VMIC pin voltage
+ */
+ val = CODEC_READ(sc, AC_ADC_ACTL);
+ val |= ADC_ACTL_ADCREN;
+ val |= ADC_ACTL_ADCLEN;
+ val |= ADC_ACTL_PREG1EN;
+ val |= ADC_ACTL_VMICEN;
+ CODEC_WRITE(sc, AC_ADC_ACTL, val);
+
+ /* Configure ADC DMA channel */
+ a10codec_dmaconfig(ch);
+
+ /* Configure ADC FIFO */
+ CODEC_WRITE(sc, AC_ADC_FIFOC,
+ ADC_FIFOC_EN_AD |
+ ADC_FIFOC_RX_FIFO_MODE |
+ (AFMT_CHANNEL(ch->format) == 1 ? ADC_FIFOC_MONO_EN : 0) |
+ (a10codec_fs(ch) << ADC_FIFOC_FS_SHIFT) |
+ (RX_TRIG_LEVEL << ADC_FIFOC_RX_TRIG_LEVEL_SHIFT));
+
+ /* Enable ADC DRQ */
+ val = CODEC_READ(sc, AC_ADC_FIFOC);
+ val |= ADC_FIFOC_DRQ_EN;
+ CODEC_WRITE(sc, AC_ADC_FIFOC, val);
+ }
+
+ /* Start DMA transfer */
+ a10codec_transfer(ch);
+}
+
+static void
+a10codec_stop(struct a10codec_chinfo *ch)
+{
+ struct a10codec_info *sc = ch->parent;
+ uint32_t val;
+
+ /* Disable DMA channel */
+ SUNXI_DMA_HALT(ch->dmac, ch->dmachan);
+
+ if (ch->dir == PCMDIR_PLAY) {
+ /* Disable DAC analog left/right channels and output mixer */
+ val = CODEC_READ(sc, AC_DAC_ACTL);
+ val &= ~DAC_ACTL_DACAREN;
+ val &= ~DAC_ACTL_DACALEN;
+ val &= ~DAC_ACTL_DACPAS;
+ CODEC_WRITE(sc, AC_DAC_ACTL, val);
+
+ /* Disable DAC DRQ */
+ CODEC_WRITE(sc, AC_DAC_FIFOC, 0);
+ } else {
+ /* Disable ADC analog left/right channels, MIC1 preamp,
+ * and VMIC pin voltage
+ */
+ val = CODEC_READ(sc, AC_ADC_ACTL);
+ val &= ~ADC_ACTL_ADCREN;
+ val &= ~ADC_ACTL_ADCLEN;
+ val &= ~ADC_ACTL_PREG1EN;
+ val &= ~ADC_ACTL_VMICEN;
+ CODEC_WRITE(sc, AC_ADC_ACTL, val);
+
+ /* Disable ADC DRQ */
+ CODEC_WRITE(sc, AC_ADC_FIFOC, 0);
+ }
+}
+
+static void *
+a10codec_chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
+ struct pcm_channel *c, int dir)
+{
+ struct a10codec_info *sc = devinfo;
+ struct a10codec_chinfo *ch = dir == PCMDIR_PLAY ? &sc->play : &sc->rec;
+ int error;
+
+ ch->parent = sc;
+ ch->channel = c;
+ ch->buffer = b;
+ ch->dir = dir;
+ ch->fifo = rman_get_start(sc->res[0]) +
+ (dir == PCMDIR_REC ? AC_ADC_RXDATA : AC_DAC_TXDATA);
+
+ ch->dmac = devclass_get_device(devclass_find("a10dmac"), 0);
+ if (ch->dmac == NULL) {
+ device_printf(sc->dev, "cannot find DMA controller\n");
+ return (NULL);
+ }
+ ch->dmachan = SUNXI_DMA_ALLOC(ch->dmac, false, a10codec_dmaintr, ch);
+ if (ch->dmachan == NULL) {
+ device_printf(sc->dev, "cannot allocate DMA channel\n");
+ return (NULL);
+ }
+
+ error = bus_dmamem_alloc(sc->dmat, &ch->dmaaddr,
+ BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &ch->dmamap);
+ if (error != 0) {
+ device_printf(sc->dev, "cannot allocate channel buffer\n");
+ return (NULL);
+ }
+ error = bus_dmamap_load(sc->dmat, ch->dmamap, ch->dmaaddr,
+ sc->dmasize, a10codec_dmamap_cb, ch, BUS_DMA_NOWAIT);
+ if (error != 0) {
+ device_printf(sc->dev, "cannot load DMA map\n");
+ return (NULL);
+ }
+ memset(ch->dmaaddr, 0, sc->dmasize);
+
+ if (sndbuf_setup(ch->buffer, ch->dmaaddr, sc->dmasize) != 0) {
+ device_printf(sc->dev, "cannot setup sndbuf\n");
+ return (NULL);
+ }
+
+ return (ch);
+}
+
+static int
+a10codec_chan_free(kobj_t obj, void *data)
+{
+ struct a10codec_chinfo *ch = data;
+ struct a10codec_info *sc = ch->parent;
+
+ SUNXI_DMA_FREE(ch->dmac, ch->dmachan);
+ bus_dmamap_unload(sc->dmat, ch->dmamap);
+ bus_dmamem_free(sc->dmat, ch->dmaaddr, ch->dmamap);
+
+ return (0);
+}
+
+static int
+a10codec_chan_setformat(kobj_t obj, void *data, uint32_t format)
+{
+ struct a10codec_chinfo *ch = data;
+
+ ch->format = format;
+
+ return (0);
+}
+
+static uint32_t
+a10codec_chan_setspeed(kobj_t obj, void *data, uint32_t speed)
+{
+ struct a10codec_chinfo *ch = data;
+
+ /*
+ * The codec supports full duplex operation but both DAC and ADC
+ * use the same source clock (PLL2). Limit the available speeds to
+ * those supported by a 24576000 Hz input.
+ */
+ switch (speed) {
+ case 8000:
+ case 12000:
+ case 16000:
+ case 24000:
+ case 32000:
+ case 48000:
+ ch->speed = speed;
+ break;
+ case 96000:
+ case 192000:
+ /* 96 KHz / 192 KHz mode only supported for playback */
+ if (ch->dir == PCMDIR_PLAY) {
+ ch->speed = speed;
+ } else {
+ ch->speed = 48000;
+ }
+ break;
+ case 44100:
+ ch->speed = 48000;
+ break;
+ case 22050:
+ ch->speed = 24000;
+ break;
+ case 11025:
+ ch->speed = 12000;
+ break;
+ default:
+ ch->speed = 48000;
+ break;
+ }
+
+ return (ch->speed);
+}
+
+static uint32_t
+a10codec_chan_setblocksize(kobj_t obj, void *data, uint32_t blocksize)
+{
+ struct a10codec_chinfo *ch = data;
+
+ ch->blocksize = blocksize & ~3;
+
+ return (ch->blocksize);
+}
+
+static int
+a10codec_chan_trigger(kobj_t obj, void *data, int go)
+{
+ struct a10codec_chinfo *ch = data;
+ struct a10codec_info *sc = ch->parent;
+
+ if (!PCMTRIG_COMMON(go))
+ return (0);
+
+ snd_mtxlock(sc->lock);
+ switch (go) {
+ case PCMTRIG_START:
+ ch->run = 1;
+ a10codec_start(ch);
+ break;
+ case PCMTRIG_STOP:
+ case PCMTRIG_ABORT:
+ ch->run = 0;
+ a10codec_stop(ch);
+ break;
+ default:
+ break;
+ }
+ snd_mtxunlock(sc->lock);
+
+ return (0);
+}
+
+static uint32_t
+a10codec_chan_getptr(kobj_t obj, void *data)
+{
+ struct a10codec_chinfo *ch = data;
+
+ return (ch->pos);
+}
+
+static struct pcmchan_caps *
+a10codec_chan_getcaps(kobj_t obj, void *data)
+{
+ struct a10codec_chinfo *ch = data;
+
+ if (ch->dir == PCMDIR_PLAY) {
+ return (&a10codec_pcaps);
+ } else {
+ return (&a10codec_rcaps);
+ }
+}
+
+static kobj_method_t a10codec_chan_methods[] = {
+ KOBJMETHOD(channel_init, a10codec_chan_init),
+ KOBJMETHOD(channel_free, a10codec_chan_free),
+ KOBJMETHOD(channel_setformat, a10codec_chan_setformat),
+ KOBJMETHOD(channel_setspeed, a10codec_chan_setspeed),
+ KOBJMETHOD(channel_setblocksize, a10codec_chan_setblocksize),
+ KOBJMETHOD(channel_trigger, a10codec_chan_trigger),
+ KOBJMETHOD(channel_getptr, a10codec_chan_getptr),
+ KOBJMETHOD(channel_getcaps, a10codec_chan_getcaps),
+ KOBJMETHOD_END
+};
+CHANNEL_DECLARE(a10codec_chan);
+
+
+/*
+ * Device interface
+ */
+
+static int
+a10codec_probe(device_t dev)
+{
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (!ofw_bus_is_compatible(dev, "allwinner,sun7i-a20-codec"))
+ return (ENXIO);
+
+ device_set_desc(dev, "Allwinner Audio Codec");
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+a10codec_attach(device_t dev)
+{
+ struct a10codec_info *sc;
+ char status[SND_STATUSLEN];
+ uint32_t val;
+ int error;
+
+ sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
+ sc->dev = dev;
+ sc->lock = snd_mtxcreate(device_get_nameunit(dev), "a10codec softc");
+
+ if (bus_alloc_resources(dev, a10codec_spec, sc->res)) {
+ device_printf(dev, "cannot allocate resources for device\n");
+ error = ENXIO;
+ goto fail;
+ }
+
+ /* XXX DRQ types should come from FDT, but how? */
+ if (ofw_bus_is_compatible(dev, "allwinner,sun4i-a10-codec") ||
+ ofw_bus_is_compatible(dev, "allwinner,sun7i-a20-codec")) {
+ sc->drqtype_codec = 19;
+ sc->drqtype_sdram = 22;
+ } else {
+ device_printf(dev, "DRQ types not known for this SoC\n");
+ error = ENXIO;
+ goto fail;
+ }
+
+ sc->dmasize = 131072;
+ error = bus_dma_tag_create(
+ bus_get_dma_tag(dev),
+ 4, sc->dmasize, /* alignment, boundary */
+ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
+ BUS_SPACE_MAXADDR, /* highaddr */
+ NULL, NULL, /* filter, filterarg */
+ sc->dmasize, 1, /* maxsize, nsegs */
+ sc->dmasize, 0, /* maxsegsize, flags */
+ NULL, NULL, /* lockfunc, lockarg */
+ &sc->dmat);
+ if (error != 0) {
+ device_printf(dev, "cannot create DMA tag\n");
+ goto fail;
+ }
+
+ /* Activate audio codec clock. According to the A10 and A20 user
+ * manuals, Audio_pll can be either 24.576MHz or 22.5792MHz. Most
+ * audio sampling rates require an 24.576MHz input clock with the
+ * exception of 44.1kHz, 22.05kHz, and 11.025kHz. Unfortunately,
+ * both capture and playback use the same clock source so to
+ * safely support independent full duplex operation, we use a fixed
+ * 24.576MHz clock source and don't advertise native support for
+ * the three sampling rates that require a 22.5792MHz input.
+ */
+ a10_clk_codec_activate(24576000);
+
+ /* Enable DAC */
+ val = CODEC_READ(sc, AC_DAC_DPC);
+ val |= DAC_DPC_EN_DA;
+ CODEC_WRITE(sc, AC_DAC_DPC, val);
+
+#ifdef notdef
+ error = snd_setup_intr(dev, sc->irq, INTR_MPSAFE, a10codec_intr, sc,
+ &sc->ih);
+ if (error != 0) {
+ device_printf(dev, "could not setup interrupt handler\n");
+ goto fail;
+ }
+#endif
+
+ if (mixer_init(dev, &a10codec_mixer_class, sc)) {
+ device_printf(dev, "mixer_init failed\n");
+ goto fail;
+ }
+
+ pcm_setflags(dev, pcm_getflags(dev) | SD_F_MPSAFE);
+
+ if (pcm_register(dev, sc, 1, 1)) {
+ device_printf(dev, "pcm_register failed\n");
+ goto fail;
+ }
+
+ pcm_addchan(dev, PCMDIR_PLAY, &a10codec_chan_class, sc);
+ pcm_addchan(dev, PCMDIR_REC, &a10codec_chan_class, sc);
+
+ snprintf(status, SND_STATUSLEN, "at %s", ofw_bus_get_name(dev));
+ pcm_setstatus(dev, status);
+
+ return (0);
+
+fail:
+ bus_release_resources(dev, a10codec_spec, sc->res);
+ snd_mtxfree(sc->lock);
+ free(sc, M_DEVBUF);
+
+ return (error);
+}
+
+static device_method_t a10codec_pcm_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, a10codec_probe),
+ DEVMETHOD(device_attach, a10codec_attach),
+
+ DEVMETHOD_END
+};
+
+static driver_t a10codec_pcm_driver = {
+ "pcm",
+ a10codec_pcm_methods,
+ PCM_SOFTC_SIZE,
+};
+
+DRIVER_MODULE(a10codec, simplebus, a10codec_pcm_driver, pcm_devclass, 0, 0);
+MODULE_DEPEND(a10codec, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
+MODULE_VERSION(a10codec, 1);
Modified: head/sys/arm/allwinner/files.allwinner
==============================================================================
--- head/sys/arm/allwinner/files.allwinner Tue Feb 16 11:43:57 2016 (r295656)
+++ head/sys/arm/allwinner/files.allwinner Tue Feb 16 11:45:46 2016 (r295657)
@@ -3,6 +3,7 @@ kern/kern_clocksource.c standard
arm/allwinner/a10_ahci.c optional ahci
arm/allwinner/a10_clk.c standard
+arm/allwinner/a10_codec.c optional sound
arm/allwinner/a10_common.c standard
arm/allwinner/a10_dmac.c standard
arm/allwinner/a10_ehci.c optional ehci
Modified: head/sys/arm/conf/A20
==============================================================================
--- head/sys/arm/conf/A20 Tue Feb 16 11:43:57 2016 (r295656)
+++ head/sys/arm/conf/A20 Tue Feb 16 11:45:46 2016 (r295657)
@@ -112,6 +112,9 @@ device dwc # 10/100/1000 integrated G
# USB ethernet support, requires miibus
device miibus
+# Sound support
+device sound
+
# Flattened Device Tree
options FDT # Configure using FDT/DTB data
makeoptions MODULES_EXTRA=dtb/allwinner
Modified: head/sys/boot/fdt/dts/arm/sun7i-a20.dtsi
==============================================================================
--- head/sys/boot/fdt/dts/arm/sun7i-a20.dtsi Tue Feb 16 11:43:57 2016 (r295656)
+++ head/sys/boot/fdt/dts/arm/sun7i-a20.dtsi Tue Feb 16 11:45:46 2016 (r295657)
@@ -180,6 +180,14 @@
interrupts = <27>;
interrupt-parent = <&GIC>;
};
+
+ codec: codec at 01c22c00 {
+ compatible = "allwinner,sun7i-a20-codec";
+ reg = <0x01c22c00 0x40>;
+ interrupts = <30>;
+ interrupt-parent = <&GIC>;
+ status = "disabled";
+ };
};
};
More information about the svn-src-head
mailing list