Module Name:    src
Committed By:   snj
Date:           Fri Jun  9 16:59:20 UTC 2017

Modified Files:
        src/sys/arch/arm/fdt [netbsd-8]: files.fdt
        src/sys/arch/evbarm/conf [netbsd-8]: VEXPRESS_A15
        src/sys/conf [netbsd-8]: files
Added Files:
        src/sys/arch/arm/fdt [netbsd-8]: aaci_fdt.c
        src/sys/dev/ic [netbsd-8]: pl041.c pl041var.h

Log Message:
Pull up following revision(s) (requested by jmcneill in ticket #17):
        sys/arch/arm/fdt/aaci_fdt.c: revision 1.1
        sys/arch/arm/fdt/files.fdt: revision 1.10
        sys/arch/evbarm/conf/VEXPRESS_A15: revisions 1.14, 1.15
        sys/conf/files: revision 1.1174
        sys/dev/ic/pl041.c: revisions 1.1-1.3
        sys/dev/ic/pl041var.h: revision 1.1
Add driver for ARM PrimeCell Advanced Audio CODEC interface (PL041).
Don't expect this driver to work on real hardware, but QEMU emulates it.
--
Add fdt glue for ARM PrimeCell Advanced Audio CODEC interface (PL041).
--
Add aaci at fdt, commented out for now. Driver should work (tm) but QEMU
and my old Thinkpad can't seem to keep up.
--
Fix two bugs:
 - Inverted test for fifo status in aaci_write_data
 - Return success from trigger_output (thanks nat)
--
Enable aaci
--
bus_space_write_multi_4 takes a count, not number of bytes. With this,
audio works in qemu.


To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1.2.2 src/sys/arch/arm/fdt/aaci_fdt.c
cvs rdiff -u -r1.9 -r1.9.2.1 src/sys/arch/arm/fdt/files.fdt
cvs rdiff -u -r1.12.2.1 -r1.12.2.2 src/sys/arch/evbarm/conf/VEXPRESS_A15
cvs rdiff -u -r1.1173 -r1.1173.2.1 src/sys/conf/files
cvs rdiff -u -r0 -r1.3.2.2 src/sys/dev/ic/pl041.c
cvs rdiff -u -r0 -r1.1.2.2 src/sys/dev/ic/pl041var.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/sys/arch/arm/fdt/files.fdt
diff -u src/sys/arch/arm/fdt/files.fdt:1.9 src/sys/arch/arm/fdt/files.fdt:1.9.2.1
--- src/sys/arch/arm/fdt/files.fdt:1.9	Sat Jun  3 17:05:23 2017
+++ src/sys/arch/arm/fdt/files.fdt	Fri Jun  9 16:59:20 2017
@@ -1,4 +1,4 @@
-# $NetBSD: files.fdt,v 1.9 2017/06/03 17:05:23 jmcneill Exp $
+# $NetBSD: files.fdt,v 1.9.2.1 2017/06/09 16:59:20 snj Exp $
 
 include	"dev/pckbport/files.pckbport"
 
@@ -32,5 +32,8 @@ file	arch/arm/fdt/plmmc_fdt.c		plmmc_fdt
 attach	smsh at fdt with smsh_fdt
 file	arch/arm/fdt/smsh_fdt.c			smsh_fdt
 
+attach	aaci at fdt with aaci_fdt
+file	arch/arm/fdt/aaci_fdt.c			aaci_fdt
+
 # Console parameters
 defparam opt_fdt_arm.h				CONSADDR

Index: src/sys/arch/evbarm/conf/VEXPRESS_A15
diff -u src/sys/arch/evbarm/conf/VEXPRESS_A15:1.12.2.1 src/sys/arch/evbarm/conf/VEXPRESS_A15:1.12.2.2
--- src/sys/arch/evbarm/conf/VEXPRESS_A15:1.12.2.1	Tue Jun  6 16:26:53 2017
+++ src/sys/arch/evbarm/conf/VEXPRESS_A15	Fri Jun  9 16:59:20 2017
@@ -1,5 +1,5 @@
 #
-#	$NetBSD: VEXPRESS_A15,v 1.12.2.1 2017/06/06 16:26:53 snj Exp $
+#	$NetBSD: VEXPRESS_A15,v 1.12.2.2 2017/06/09 16:59:20 snj Exp $
 #
 #	ARM Versatile Express A15
 #
@@ -63,6 +63,11 @@ ld2		at sdmmc2
 ld3		at sdmmc3
 ld*		at sdmmc?
 
+# Audio
+aaci*		at fdt?			# ARM PrimeCell AACI
+audio*		at audiobus?
+spkr*		at audio?		# PC speaker (synthesized)
+
 # Framebuffer
 genfb*		at fdt?
 wsdisplay*	at genfb?

Index: src/sys/conf/files
diff -u src/sys/conf/files:1.1173 src/sys/conf/files:1.1173.2.1
--- src/sys/conf/files:1.1173	Sat Jun  3 17:03:36 2017
+++ src/sys/conf/files	Fri Jun  9 16:59:20 2017
@@ -1,4 +1,4 @@
-#	$NetBSD: files,v 1.1173 2017/06/03 17:03:36 jmcneill Exp $
+#	$NetBSD: files,v 1.1173.2.1 2017/06/09 16:59:20 snj Exp $
 #	@(#)files.newconf	7.5 (Berkeley) 5/10/93
 
 version 	20150846
@@ -1315,6 +1315,10 @@ defflag	opt_dwc_mmc.h	DWC_MMC_DEBUG
 device	dwcmmc: sdmmcbus
 file	dev/ic/dwc_mmc.c		dwcmmc
 
+# ARM PrimeCell PL041 (AACI) Advanced Audio CODEC interface
+device	aaci: audiobus, auconv, aurateconv, mulaw, ac97
+file	dev/ic/pl041.c			aaci
+
 # ARM PrimeCell PL050 (KMI) PS2 keyboard/mouse interface
 device	plkmi: pckbport
 file	dev/ic/pl050.c			plkmi

Added files:

Index: src/sys/arch/arm/fdt/aaci_fdt.c
diff -u /dev/null src/sys/arch/arm/fdt/aaci_fdt.c:1.1.2.2
--- /dev/null	Fri Jun  9 16:59:21 2017
+++ src/sys/arch/arm/fdt/aaci_fdt.c	Fri Jun  9 16:59:20 2017
@@ -0,0 +1,106 @@
+/* $NetBSD: aaci_fdt.c,v 1.1.2.2 2017/06/09 16:59:20 snj Exp $ */
+
+/*-
+ * Copyright (c) 2017 Jared McNeill <jmcne...@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.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: aaci_fdt.c,v 1.1.2.2 2017/06/09 16:59:20 snj Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+
+#include <dev/fdt/fdtvar.h>
+
+#include <dev/ic/pl041var.h>
+
+static int	aaci_fdt_match(device_t, cfdata_t, void *);
+static void	aaci_fdt_attach(device_t, device_t, void *);
+
+static const char * const compatible[] = {
+	"arm,pl041",
+	NULL
+};
+
+CFATTACH_DECL_NEW(aaci_fdt, sizeof(struct aaci_softc),
+	aaci_fdt_match, aaci_fdt_attach, NULL, NULL);
+
+static int
+aaci_fdt_match(device_t parent, cfdata_t cf, void *aux)
+{
+	struct fdt_attach_args * const faa = aux;
+
+	return of_compatible(faa->faa_phandle, compatible) >= 0;
+}
+
+static void
+aaci_fdt_attach(device_t parent, device_t self, void *aux)
+{
+	struct aaci_softc * const sc = device_private(self);
+	struct fdt_attach_args * const faa = aux;
+	const int phandle = faa->faa_phandle;
+	char intrstr[128];
+	struct clk *clk;
+	bus_addr_t addr;
+	bus_size_t size;
+	void *ih;
+
+	if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
+		aprint_error(": missing 'reg' property\n");
+		return;
+	}
+
+	if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
+		aprint_error_dev(self, "failed to decode interrupt\n");
+		return;
+	}
+
+	for (int i = 0; (clk = fdtbus_clock_get_index(phandle, i)); i++)
+		if (clk_enable(clk) != 0) {
+			aprint_error(": couldn't enable clock #%d\n", i);
+			return;
+		}
+
+	sc->sc_dev = self;
+	sc->sc_bst = faa->faa_bst;
+	if (bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_bsh)) {
+		aprint_error(": couldn't map device\n");
+		return;
+	}
+
+	ih = fdtbus_intr_establish(phandle, 0, IPL_AUDIO, FDT_INTR_MPSAFE,
+	    aaci_intr, sc);
+	if (ih == NULL) {
+		aprint_error_dev(self, "couldn't install interrupt handler\n");
+		return;
+	}
+
+	aaci_attach(sc);
+
+	aprint_normal_dev(self, "interrupting on %s\n", intrstr);
+}

Index: src/sys/dev/ic/pl041.c
diff -u /dev/null src/sys/dev/ic/pl041.c:1.3.2.2
--- /dev/null	Fri Jun  9 16:59:21 2017
+++ src/sys/dev/ic/pl041.c	Fri Jun  9 16:59:20 2017
@@ -0,0 +1,358 @@
+/* $NetBSD: pl041.c,v 1.3.2.2 2017/06/09 16:59:20 snj Exp $ */
+
+/*-
+ * Copyright (c) 2017 Jared McNeill <jmcne...@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.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: pl041.c,v 1.3.2.2 2017/06/09 16:59:20 snj Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/kmem.h>
+#include <sys/bus.h>
+#include <sys/audioio.h>
+
+#include <dev/audio_if.h>
+#include <dev/auconv.h>
+
+#include <dev/ic/ac97var.h>
+#include <dev/ic/ac97reg.h>
+
+#include <dev/ic/pl041var.h>
+
+#define	AACIRXCR		0x00
+#define	AACITXCR		0x04
+#define	 AACITXCR_TXFEN		__BIT(16)
+#define	 AACITXCR_TXCM		__BIT(15)
+#define	 AACITXCR_TSIZE		__BITS(14,13)
+#define	  AACITXCR_TSIZE_16	__SHIFTIN(0, AACITXCR_TSIZE)
+#define	  AACITXCR_TX(n)	__BIT(n)
+#define	 AACITXCR_TXEN		__BIT(0)
+#define	AACISR			0x08
+#define	 AACISR_TXFF		__BIT(5)
+#define	 AACISR_TXHE		__BIT(3)
+#define	AACIISR			0x0c
+#define	 AACIISR_URINTR		__BIT(5)
+#define	 AACIISR_TXINTR		__BIT(2)
+#define	AACIIE			0x10
+#define	 AACIIE_TXUIE		__BIT(5)
+#define	 AACIIE_TXIE		__BIT(2)
+#define	AACISL1RX		0x50
+#define	AACISL1TX		0x54
+#define	AACISL2RX		0x58
+#define	AACISL2TX		0x5c
+#define	AACISLFR		0x68
+#define	AACISLISTAT		0x6c
+#define	AACISLIEN		0x70
+#define	AACIINTCLR		0x74
+#define	AACIMAINCR		0x78
+#define	AACIRESET		0x7c
+#define	AACISYNC		0x80
+#define	AACIALLINTS		0x84
+#define	AACIMAINFR		0x88
+#define	AACIDR			0x90
+
+#define	AACI_FIFO_DEPTH		512
+#define	AACI_BLOCK_ALIGN	4
+
+#define	AACI_READ(sc, reg)			\
+	bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg))
+#define	AACI_WRITE(sc, reg, val)		\
+	bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val))
+#define	AACI_WRITE_MULTI(sc, reg, val, cnt)	\
+	bus_space_write_multi_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val), (cnt))
+
+static const struct audio_format aaci_format = {
+	.mode = AUMODE_PLAY,
+	.encoding = AUDIO_ENCODING_SLINEAR_LE,
+	.validbits = 16,
+	.precision = 16,
+	.channels = 2,
+	.channel_mask = AUFMT_STEREO,
+	.frequency_type = 0,
+	.frequency = { 48000, 48000 }
+};
+
+static void
+aaci_write_data(struct aaci_softc *sc)
+{
+	KASSERT(mutex_owned(&sc->sc_intr_lock));
+
+	if (sc->sc_pint == NULL)
+		return;
+
+	while ((AACI_READ(sc, AACISR) & AACISR_TXHE) != 0) {
+		const int len = min(AACI_FIFO_DEPTH / 2, min(sc->sc_pblkresid,
+		    (uintptr_t)sc->sc_pend - (uintptr_t)sc->sc_pcur));
+		KASSERT((len & 3) == 0);
+		AACI_WRITE_MULTI(sc, AACIDR, sc->sc_pcur, len >> 2);
+		sc->sc_pcur += (len >> 2);
+		if (sc->sc_pcur == sc->sc_pend)
+			sc->sc_pcur = sc->sc_pstart;
+		sc->sc_pblkresid -= len;
+		if (sc->sc_pblkresid == 0) {
+			sc->sc_pblkresid = sc->sc_pblksize;
+			sc->sc_pint(sc->sc_pintarg);
+		}
+	}
+}
+
+static int
+aaci_query_encoding(void *priv, struct audio_encoding *enc)
+{
+	struct aaci_softc * const sc = priv;
+
+	return auconv_query_encoding(sc->sc_encodings, enc);
+}
+
+static int
+aaci_set_params(void *priv, int setmode, int usermode,
+    audio_params_t *play, audio_params_t *rec,
+    stream_filter_list_t *pfil, stream_filter_list_t *rfil)
+{
+	int index;
+
+	if (play && (setmode & AUMODE_PLAY) != 0) {
+		index = auconv_set_converter(&aaci_format, 1, AUMODE_PLAY,
+		    play, true, pfil);
+		if (index < 0)
+			return EINVAL;
+	}
+
+	return 0;
+}
+
+static int
+aaci_getdev(void *priv, struct audio_device *audiodev)
+{
+	snprintf(audiodev->name, sizeof(audiodev->name), "ARM");
+	snprintf(audiodev->version, sizeof(audiodev->version),
+	    "PrimeCell AACI");
+	snprintf(audiodev->config, sizeof(audiodev->config), "aaci");
+	return 0;
+}
+
+static int
+aaci_set_port(void *priv, mixer_ctrl_t *mc)
+{
+	struct aaci_softc * const sc = priv;
+
+	return sc->sc_ac97_codec->vtbl->mixer_set_port(sc->sc_ac97_codec, mc);
+}
+
+static int
+aaci_get_port(void *priv, mixer_ctrl_t *mc)
+{
+	struct aaci_softc * const sc = priv;
+
+	return sc->sc_ac97_codec->vtbl->mixer_get_port(sc->sc_ac97_codec, mc);
+}
+
+static int
+aaci_query_devinfo(void *priv, mixer_devinfo_t *di)
+{
+	struct aaci_softc * const sc = priv;
+
+	return sc->sc_ac97_codec->vtbl->query_devinfo(sc->sc_ac97_codec, di);
+}
+
+static int
+aaci_get_props(void *priv)
+{
+	return AUDIO_PROP_PLAYBACK;
+}
+
+static int
+aaci_trigger_output(void *priv, void *start, void *end, int blksize,
+    void (*intr)(void *), void *intrarg, const audio_params_t *params)
+{
+	struct aaci_softc * const sc = priv;
+
+	sc->sc_pcur = start;
+	sc->sc_pstart = start;
+	sc->sc_pend = end;
+	sc->sc_pblksize = blksize;
+	sc->sc_pblkresid = blksize;
+	sc->sc_pint = intr;
+	sc->sc_pintarg = intrarg;
+
+	AACI_WRITE(sc, AACIIE, AACIIE_TXIE | AACIIE_TXUIE);
+	AACI_WRITE(sc, AACITXCR, AACITXCR_TXFEN | AACITXCR_TXEN |
+	    AACITXCR_TXCM | AACITXCR_TSIZE_16 |
+	    AACITXCR_TX(3) | AACITXCR_TX(4));
+
+	return 0;
+}
+
+static int
+aaci_trigger_input(void *priv, void *start, void *end, int blksize,
+    void (*intr)(void *), void *intrarg, const audio_params_t *params)
+{
+	return ENXIO;
+}
+
+static int
+aaci_halt_output(void *priv)
+{
+	struct aaci_softc * const sc = priv;
+
+	sc->sc_pint = NULL;
+
+	AACI_WRITE(sc, AACITXCR, 0);
+	AACI_WRITE(sc, AACIIE, 0);
+
+	return 0;
+}
+
+static int
+aaci_halt_input(void *priv)
+{
+	return ENXIO;
+}
+
+static int
+aaci_round_blocksize(void *priv, int bs, int mode, const audio_params_t *params)
+{
+	return roundup(bs, AACI_BLOCK_ALIGN);
+}
+
+static void
+aaci_get_locks(void *priv, kmutex_t **intr, kmutex_t **thread)
+{
+	struct aaci_softc * const sc = priv;
+
+	*intr = &sc->sc_intr_lock;
+	*thread = &sc->sc_lock;
+}
+
+static const struct audio_hw_if aaci_hw_if = {
+	.query_encoding = aaci_query_encoding,
+	.set_params = aaci_set_params,
+	.getdev = aaci_getdev,
+	.set_port = aaci_set_port,
+	.get_port = aaci_get_port,
+	.query_devinfo = aaci_query_devinfo,
+	.get_props = aaci_get_props,
+	.trigger_output = aaci_trigger_output,
+	.trigger_input = aaci_trigger_input,
+	.halt_output = aaci_halt_output,
+	.halt_input = aaci_halt_input,
+	.round_blocksize = aaci_round_blocksize,
+	.get_locks = aaci_get_locks,
+};
+
+static int
+aaci_ac97_attach(void *priv, struct ac97_codec_if *codec)
+{
+	struct aaci_softc * const sc = priv;
+
+	sc->sc_ac97_codec = codec;
+
+	return 0;
+}
+
+static int
+aaci_ac97_read(void *priv, uint8_t reg, uint16_t *val)
+{
+	struct aaci_softc * const sc = priv;
+
+	AACI_WRITE(sc, AACISL1TX, (reg << 12) | (1 << 19));
+
+	if (AACI_READ(sc, AACISL1RX) != (reg << 12))
+		return 1;
+
+	*val = AACI_READ(sc, AACISL2RX) >> 4;
+	return 0;
+}
+
+static int
+aaci_ac97_write(void *priv, uint8_t reg, uint16_t val)
+{
+	struct aaci_softc * const sc = priv;
+
+	AACI_WRITE(sc, AACISL2TX, val << 4);
+	AACI_WRITE(sc, AACISL1TX, (reg << 12) | (0 << 19));
+
+	return 0;
+}
+
+void
+aaci_attach(struct aaci_softc *sc)
+{
+	int error;
+
+	aprint_naive("\n");
+	aprint_normal(": Advanced Audio CODEC\n");
+
+	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
+	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
+
+	sc->sc_ac97_host.arg = sc;
+	sc->sc_ac97_host.attach = aaci_ac97_attach;
+	sc->sc_ac97_host.read = aaci_ac97_read;
+	sc->sc_ac97_host.write = aaci_ac97_write;
+	error = ac97_attach(&sc->sc_ac97_host, sc->sc_dev, &sc->sc_lock);
+	if (error) {
+		aprint_error_dev(sc->sc_dev, "couldn't attach codec (%d)\n",
+		    error);
+		return;
+	}
+
+	error = auconv_create_encodings(&aaci_format, 1, &sc->sc_encodings);
+	if (error) {
+		aprint_error_dev(sc->sc_dev, "couldn't create encodings (%d)\n",
+		    error);
+		return;
+	}
+
+	sc->sc_audiodev = audio_attach_mi(&aaci_hw_if, sc, sc->sc_dev);
+}
+
+int
+aaci_intr(void *priv)
+{
+	struct aaci_softc * const sc = priv;
+	uint32_t isr;
+
+	if (sc->sc_audiodev == NULL)
+		return 0;
+
+	isr = AACI_READ(sc, AACIISR);
+
+	if (isr & AACIISR_URINTR)
+		AACI_WRITE(sc, AACIINTCLR, AACIISR_URINTR);
+
+	if (isr & AACIISR_TXINTR) {
+		mutex_enter(&sc->sc_intr_lock);
+		if (sc->sc_pint == NULL)
+			AACI_WRITE(sc, AACIIE, 0);
+		aaci_write_data(sc);
+		mutex_exit(&sc->sc_intr_lock);
+	}
+
+	return 1;
+}

Index: src/sys/dev/ic/pl041var.h
diff -u /dev/null src/sys/dev/ic/pl041var.h:1.1.2.2
--- /dev/null	Fri Jun  9 16:59:21 2017
+++ src/sys/dev/ic/pl041var.h	Fri Jun  9 16:59:20 2017
@@ -0,0 +1,60 @@
+/* $NetBSD: pl041var.h,v 1.1.2.2 2017/06/09 16:59:20 snj Exp $ */
+
+/*-
+ * Copyright (c) 2017 Jared McNeill <jmcne...@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.
+ */
+
+#ifndef _PL041VAR_H
+#define _PL041VAR_H
+
+#include <dev/audiovar.h>
+#include <dev/ic/ac97var.h>
+
+struct aaci_softc {
+	device_t		sc_dev;
+	bus_space_tag_t		sc_bst;
+	bus_space_handle_t	sc_bsh;
+	kmutex_t		sc_lock;
+	kmutex_t		sc_intr_lock;
+	struct ac97_host_if	sc_ac97_host;
+	struct ac97_codec_if	*sc_ac97_codec;
+	device_t		sc_audiodev;
+
+	void			(*sc_pint)(void *);
+	void			*sc_pintarg;
+	uint32_t		*sc_pstart;
+	uint32_t		*sc_pend;
+	int			sc_pblksize;
+
+	uint32_t		*sc_pcur;
+	int			sc_pblkresid;
+
+	struct audio_encoding_set *sc_encodings;
+};
+
+void	aaci_attach(struct aaci_softc *);
+int	aaci_intr(void *);
+
+#endif /* !_PL041VAR_H */

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