brcm2708: remove linux 4.1 support

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

SVN-Revision: 48766

1 files changed, 0 insertions, 2818 deletions

diff --git a/target/linux/brcm2708/patches-4.1/0011-bcm2708-alsa-sound-driver.patch b/target/linux/brcm2708/patches-4.1/0011-bcm2708-alsa-sound-driver.patch
deleted file mode 100644
index c6c508181e..0000000000
--- a/target/linux/brcm2708/patches-4.1/0011-bcm2708-alsa-sound-driver.patch
+++ /dev/null
@@ -1,2818 +0,0 @@
-From f03865c96a8fd8a9a33d690a31adaea3b9ed001d Mon Sep 17 00:00:00 2001
-From: popcornmix <popcornmix@gmail.com>
-Date: Mon, 26 Mar 2012 22:15:50 +0100
-Subject: [PATCH 011/222] bcm2708: alsa sound driver
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Signed-off-by: popcornmix <popcornmix@gmail.com>
-
-alsa: add mmap support and some cleanups to bcm2835 ALSA driver
-
-snd-bcm2835: Add support for spdif/hdmi passthrough
-
-This adds a dedicated subdevice which can be used for passthrough of non-audio
-formats (ie encoded a52) through the hdmi audio link. In addition to this
-driver extension an appropriate card config is required to make alsa-lib
-support the AES parameters for this device.
-
-snd-bcm2708: Add mutex, improve logging
-
-Fix for ALSA driver crash
-
-Avoids an issue when closing and opening vchiq where a message can arrive before service handle has been written
-
-alsa: reduce severity of expected warning message
-
-snd-bcm2708: Fix dmesg spam for non-error case
-
-alsa: Ensure mutexes are released through error paths
-
-alsa: Make interrupted close paths quieter
-
-BCM270x: Add onboard sound device to Device Tree
-
-Add Device Tree support to alsa driver.
-Add device to Device Tree.
-Don't add platform devices when booting in DT mode.
-
-Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
----
- arch/arm/mach-bcm2708/bcm2708.c    |  53 +++
- arch/arm/mach-bcm2709/bcm2709.c    |  53 +++
- sound/arm/Kconfig                  |   8 +
- sound/arm/Makefile                 |   5 +
- sound/arm/bcm2835-ctl.c            | 323 +++++++++++++
- sound/arm/bcm2835-pcm.c            | 557 +++++++++++++++++++++++
- sound/arm/bcm2835-vchiq.c          | 902 +++++++++++++++++++++++++++++++++++++
- sound/arm/bcm2835.c                | 511 +++++++++++++++++++++
- sound/arm/bcm2835.h                | 167 +++++++
- sound/arm/vc_vchi_audioserv_defs.h | 116 +++++
- 10 files changed, 2695 insertions(+)
- create mode 100755 sound/arm/bcm2835-ctl.c
- create mode 100755 sound/arm/bcm2835-pcm.c
- create mode 100755 sound/arm/bcm2835-vchiq.c
- create mode 100644 sound/arm/bcm2835.c
- create mode 100755 sound/arm/bcm2835.h
- create mode 100644 sound/arm/vc_vchi_audioserv_defs.h
-
---- a/arch/arm/mach-bcm2708/bcm2708.c
-+++ b/arch/arm/mach-bcm2708/bcm2708.c
-@@ -429,6 +429,57 @@ struct platform_device bcm2835_emmc_devi
- };
- #endif /* CONFIG_MMC_BCM2835 */
- 
-+static struct platform_device bcm2708_alsa_devices[] = {
-+	[0] = {
-+	       .name = "bcm2835_AUD0",
-+	       .id = 0,		/* first audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[1] = {
-+	       .name = "bcm2835_AUD1",
-+	       .id = 1,		/* second audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[2] = {
-+	       .name = "bcm2835_AUD2",
-+	       .id = 2,		/* third audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[3] = {
-+	       .name = "bcm2835_AUD3",
-+	       .id = 3,		/* forth audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[4] = {
-+	       .name = "bcm2835_AUD4",
-+	       .id = 4,		/* fifth audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[5] = {
-+	       .name = "bcm2835_AUD5",
-+	       .id = 5,		/* sixth audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[6] = {
-+	       .name = "bcm2835_AUD6",
-+	       .id = 6,		/* seventh audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[7] = {
-+	       .name = "bcm2835_AUD7",
-+	       .id = 7,		/* eighth audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+};
-+
- int __init bcm_register_device(struct platform_device *pdev)
- {
- 	int ret;
-@@ -571,6 +622,8 @@ void __init bcm2708_init(void)
- #endif
- 	bcm2708_init_led();
- 	bcm2708_init_uart1();
-+	for (i = 0; i < ARRAY_SIZE(bcm2708_alsa_devices); i++)
-+		bcm_register_device_dt(&bcm2708_alsa_devices[i]);
- 
- 	if (!use_dt) {
- 		for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
---- a/arch/arm/mach-bcm2709/bcm2709.c
-+++ b/arch/arm/mach-bcm2709/bcm2709.c
-@@ -449,6 +449,57 @@ struct platform_device bcm2835_emmc_devi
- };
- #endif /* CONFIG_MMC_BCM2835 */
- 
-+static struct platform_device bcm2708_alsa_devices[] = {
-+	[0] = {
-+	       .name = "bcm2835_AUD0",
-+	       .id = 0,		/* first audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[1] = {
-+	       .name = "bcm2835_AUD1",
-+	       .id = 1,		/* second audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[2] = {
-+	       .name = "bcm2835_AUD2",
-+	       .id = 2,		/* third audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[3] = {
-+	       .name = "bcm2835_AUD3",
-+	       .id = 3,		/* forth audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[4] = {
-+	       .name = "bcm2835_AUD4",
-+	       .id = 4,		/* fifth audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[5] = {
-+	       .name = "bcm2835_AUD5",
-+	       .id = 5,		/* sixth audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[6] = {
-+	       .name = "bcm2835_AUD6",
-+	       .id = 6,		/* seventh audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+	[7] = {
-+	       .name = "bcm2835_AUD7",
-+	       .id = 7,		/* eighth audio device */
-+	       .resource = 0,
-+	       .num_resources = 0,
-+	       },
-+};
-+
- int __init bcm_register_device(struct platform_device *pdev)
- {
- 	int ret;
-@@ -591,6 +642,8 @@ void __init bcm2709_init(void)
- #endif
- 	bcm2709_init_led();
- 	bcm2709_init_uart1();
-+	for (i = 0; i < ARRAY_SIZE(bcm2708_alsa_devices); i++)
-+		bcm_register_device_dt(&bcm2708_alsa_devices[i]);
- 
- 	if (!use_dt) {
- 		for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
---- a/sound/arm/Kconfig
-+++ b/sound/arm/Kconfig
-@@ -40,5 +40,13 @@ config SND_PXA2XX_AC97
- 	  Say Y or M if you want to support any AC97 codec attached to
- 	  the PXA2xx AC97 interface.
- 
-+config SND_BCM2835
-+	tristate "BCM2835 ALSA driver"
-+	depends on (ARCH_BCM2708 || ARCH_BCM2709 || ARCH_BCM2835) \
-+		   && BCM2708_VCHIQ && SND
-+	select SND_PCM
-+	help
-+	  Say Y or M if you want to support BCM2835 Alsa pcm card driver
-+
- endif	# SND_ARM
- 
---- a/sound/arm/Makefile
-+++ b/sound/arm/Makefile
-@@ -14,3 +14,8 @@ snd-pxa2xx-lib-$(CONFIG_SND_PXA2XX_LIB_A
- 
- obj-$(CONFIG_SND_PXA2XX_AC97)	+= snd-pxa2xx-ac97.o
- snd-pxa2xx-ac97-objs		:= pxa2xx-ac97.o
-+
-+obj-$(CONFIG_SND_BCM2835)	+= snd-bcm2835.o
-+snd-bcm2835-objs		:= bcm2835.o bcm2835-ctl.o bcm2835-pcm.o bcm2835-vchiq.o
-+
-+ccflags-y += -Idrivers/misc/vc04_services -Idrivers/misc/vc04_services/interface/vcos/linuxkernel -D__VCCOREVER__=0x04000000
---- /dev/null
-+++ b/sound/arm/bcm2835-ctl.c
-@@ -0,0 +1,323 @@
-+/*****************************************************************************
-+* Copyright 2011 Broadcom Corporation.  All rights reserved.
-+*
-+* Unless you and Broadcom execute a separate written software license
-+* agreement governing use of this software, this software is licensed to you
-+* under the terms of the GNU General Public License version 2, available at
-+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
-+*
-+* Notwithstanding the above, under no circumstances may you combine this
-+* software in any way with any other Broadcom software provided under a
-+* license other than the GPL, without Broadcom's express prior written
-+* consent.
-+*****************************************************************************/
-+
-+#include <linux/platform_device.h>
-+#include <linux/init.h>
-+#include <linux/io.h>
-+#include <linux/jiffies.h>
-+#include <linux/slab.h>
-+#include <linux/time.h>
-+#include <linux/wait.h>
-+#include <linux/delay.h>
-+#include <linux/moduleparam.h>
-+#include <linux/sched.h>
-+
-+#include <sound/core.h>
-+#include <sound/control.h>
-+#include <sound/pcm.h>
-+#include <sound/pcm_params.h>
-+#include <sound/rawmidi.h>
-+#include <sound/initval.h>
-+#include <sound/tlv.h>
-+#include <sound/asoundef.h>
-+
-+#include "bcm2835.h"
-+
-+/* volume maximum and minimum in terms of 0.01dB */
-+#define CTRL_VOL_MAX 400
-+#define CTRL_VOL_MIN -10239 /* originally -10240 */
-+
-+
-+static int snd_bcm2835_ctl_info(struct snd_kcontrol *kcontrol,
-+				struct snd_ctl_elem_info *uinfo)
-+{
-+	audio_info(" ... IN\n");
-+	if (kcontrol->private_value == PCM_PLAYBACK_VOLUME) {
-+		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-+		uinfo->count = 1;
-+		uinfo->value.integer.min = CTRL_VOL_MIN;
-+		uinfo->value.integer.max = CTRL_VOL_MAX;      /* 2303 */
-+	} else if (kcontrol->private_value == PCM_PLAYBACK_MUTE) {
-+		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
-+		uinfo->count = 1;
-+		uinfo->value.integer.min = 0;
-+		uinfo->value.integer.max = 1;
-+	} else if (kcontrol->private_value == PCM_PLAYBACK_DEVICE) {
-+		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-+		uinfo->count = 1;
-+		uinfo->value.integer.min = 0;
-+		uinfo->value.integer.max = AUDIO_DEST_MAX-1;
-+	}
-+	audio_info(" ... OUT\n");
-+	return 0;
-+}
-+
-+/* toggles mute on or off depending on the value of nmute, and returns
-+ * 1 if the mute value was changed, otherwise 0
-+ */
-+static int toggle_mute(struct bcm2835_chip *chip, int nmute)
-+{
-+	/* if settings are ok, just return 0 */
-+	if(chip->mute == nmute)
-+		return 0;
-+
-+	/* if the sound is muted then we need to unmute */
-+	if(chip->mute == CTRL_VOL_MUTE)
-+	{
-+		chip->volume = chip->old_volume; /* copy the old volume back */
-+		audio_info("Unmuting, old_volume = %d, volume = %d ...\n", chip->old_volume, chip->volume);
-+	}
-+	else /* otherwise we mute */
-+	{
-+		chip->old_volume = chip->volume;
-+		chip->volume = 26214; /* set volume to minimum level AKA mute */
-+		audio_info("Muting, old_volume = %d, volume = %d ...\n", chip->old_volume, chip->volume);
-+	}
-+
-+	chip->mute = nmute;
-+	return 1;
-+}
-+
-+static int snd_bcm2835_ctl_get(struct snd_kcontrol *kcontrol,
-+			       struct snd_ctl_elem_value *ucontrol)
-+{
-+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
-+
-+	BUG_ON(!chip && !(chip->avail_substreams & AVAIL_SUBSTREAMS_MASK));
-+
-+	if (kcontrol->private_value == PCM_PLAYBACK_VOLUME)
-+		ucontrol->value.integer.value[0] = chip2alsa(chip->volume);
-+	else if (kcontrol->private_value == PCM_PLAYBACK_MUTE)
-+		ucontrol->value.integer.value[0] = chip->mute;
-+	else if (kcontrol->private_value == PCM_PLAYBACK_DEVICE)
-+		ucontrol->value.integer.value[0] = chip->dest;
-+
-+	return 0;
-+}
-+
-+static int snd_bcm2835_ctl_put(struct snd_kcontrol *kcontrol,
-+			       struct snd_ctl_elem_value *ucontrol)
-+{
-+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
-+	int changed = 0;
-+
-+	if (kcontrol->private_value == PCM_PLAYBACK_VOLUME) {
-+		audio_info("Volume change attempted.. volume = %d new_volume = %d\n", chip->volume, (int)ucontrol->value.integer.value[0]);
-+		if (chip->mute == CTRL_VOL_MUTE) {
-+			/* changed = toggle_mute(chip, CTRL_VOL_UNMUTE); */
-+			return 1; /* should return 0 to signify no change but the mixer takes this as the opposite sign (no idea why) */
-+		}
-+		if (changed
-+		    || (ucontrol->value.integer.value[0] != chip2alsa(chip->volume))) {
-+
-+			chip->volume = alsa2chip(ucontrol->value.integer.value[0]);
-+			changed = 1;
-+		}
-+
-+	} else if (kcontrol->private_value == PCM_PLAYBACK_MUTE) {
-+		/* Now implemented */
-+		audio_info(" Mute attempted\n");
-+		changed = toggle_mute(chip, ucontrol->value.integer.value[0]);
-+
-+	} else if (kcontrol->private_value == PCM_PLAYBACK_DEVICE) {
-+		if (ucontrol->value.integer.value[0] != chip->dest) {
-+			chip->dest = ucontrol->value.integer.value[0];
-+			changed = 1;
-+		}
-+	}
-+
-+	if (changed) {
-+		if (bcm2835_audio_set_ctls(chip))
-+			printk(KERN_ERR "Failed to set ALSA controls..\n");
-+	}
-+
-+	return changed;
-+}
-+
-+static DECLARE_TLV_DB_SCALE(snd_bcm2835_db_scale, CTRL_VOL_MIN, 1, 1);
-+
-+static struct snd_kcontrol_new snd_bcm2835_ctl[] = {
-+	{
-+	 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-+	 .name = "PCM Playback Volume",
-+	 .index = 0,
-+	 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
-+	 .private_value = PCM_PLAYBACK_VOLUME,
-+	 .info = snd_bcm2835_ctl_info,
-+	 .get = snd_bcm2835_ctl_get,
-+	 .put = snd_bcm2835_ctl_put,
-+	 .count = 1,
-+	 .tlv = {.p = snd_bcm2835_db_scale}
-+	},
-+	{
-+	 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-+	 .name = "PCM Playback Switch",
-+	 .index = 0,
-+	 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
-+	 .private_value = PCM_PLAYBACK_MUTE,
-+	 .info = snd_bcm2835_ctl_info,
-+	 .get = snd_bcm2835_ctl_get,
-+	 .put = snd_bcm2835_ctl_put,
-+	 .count = 1,
-+	 },
-+	{
-+	 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-+	 .name = "PCM Playback Route",
-+	 .index = 0,
-+	 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
-+	 .private_value = PCM_PLAYBACK_DEVICE,
-+	 .info = snd_bcm2835_ctl_info,
-+	 .get = snd_bcm2835_ctl_get,
-+	 .put = snd_bcm2835_ctl_put,
-+	 .count = 1,
-+	},
-+};
-+
-+static int snd_bcm2835_spdif_default_info(struct snd_kcontrol *kcontrol,
-+					  struct snd_ctl_elem_info *uinfo)
-+{
-+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
-+	uinfo->count = 1;
-+	return 0;
-+}
-+
-+static int snd_bcm2835_spdif_default_get(struct snd_kcontrol *kcontrol,
-+					 struct snd_ctl_elem_value *ucontrol)
-+{
-+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
-+	int i;
-+
-+	for (i = 0; i < 4; i++)
-+		ucontrol->value.iec958.status[i] =
-+			(chip->spdif_status >> (i * 8)) && 0xff;
-+
-+	return 0;
-+}
-+
-+static int snd_bcm2835_spdif_default_put(struct snd_kcontrol *kcontrol,
-+					 struct snd_ctl_elem_value *ucontrol)
-+{
-+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
-+	unsigned int val = 0;
-+	int i, change;
-+
-+	for (i = 0; i < 4; i++)
-+		val |= (unsigned int)ucontrol->value.iec958.status[i] << (i * 8);
-+
-+	change = val != chip->spdif_status;
-+	chip->spdif_status = val;
-+
-+	return change;
-+}
-+
-+static int snd_bcm2835_spdif_mask_info(struct snd_kcontrol *kcontrol,
-+				       struct snd_ctl_elem_info *uinfo)
-+{
-+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
-+	uinfo->count = 1;
-+	return 0;
-+}
-+
-+static int snd_bcm2835_spdif_mask_get(struct snd_kcontrol *kcontrol,
-+				      struct snd_ctl_elem_value *ucontrol)
-+{
-+	/* bcm2835 supports only consumer mode and sets all other format flags
-+	 * automatically. So the only thing left is signalling non-audio
-+	 * content */
-+	ucontrol->value.iec958.status[0] = IEC958_AES0_NONAUDIO;
-+	return 0;
-+}
-+
-+static int snd_bcm2835_spdif_stream_info(struct snd_kcontrol *kcontrol,
-+					 struct snd_ctl_elem_info *uinfo)
-+{
-+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
-+	uinfo->count = 1;
-+	return 0;
-+}
-+
-+static int snd_bcm2835_spdif_stream_get(struct snd_kcontrol *kcontrol,
-+					struct snd_ctl_elem_value *ucontrol)
-+{
-+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
-+	int i;
-+
-+	for (i = 0; i < 4; i++)
-+		ucontrol->value.iec958.status[i] =
-+			(chip->spdif_status >> (i * 8)) & 0xff;
-+	return 0;
-+}
-+
-+static int snd_bcm2835_spdif_stream_put(struct snd_kcontrol *kcontrol,
-+					struct snd_ctl_elem_value *ucontrol)
-+{
-+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
-+	unsigned int val = 0;
-+	int i, change;
-+
-+	for (i = 0; i < 4; i++)
-+		val |= (unsigned int)ucontrol->value.iec958.status[i] << (i * 8);
-+	change = val != chip->spdif_status;
-+	chip->spdif_status = val;
-+
-+	return change;
-+}
-+
-+static struct snd_kcontrol_new snd_bcm2835_spdif[] = {
-+	{
-+		.iface = SNDRV_CTL_ELEM_IFACE_PCM,
-+		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
-+		.info = snd_bcm2835_spdif_default_info,
-+		.get = snd_bcm2835_spdif_default_get,
-+		.put = snd_bcm2835_spdif_default_put
-+	},
-+	{
-+		.access = SNDRV_CTL_ELEM_ACCESS_READ,
-+		.iface = SNDRV_CTL_ELEM_IFACE_PCM,
-+		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK),
-+		.info = snd_bcm2835_spdif_mask_info,
-+		.get = snd_bcm2835_spdif_mask_get,
-+	},
-+	{
-+		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
-+			SNDRV_CTL_ELEM_ACCESS_INACTIVE,
-+		.iface = SNDRV_CTL_ELEM_IFACE_PCM,
-+		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PCM_STREAM),
-+		.info = snd_bcm2835_spdif_stream_info,
-+		.get = snd_bcm2835_spdif_stream_get,
-+		.put = snd_bcm2835_spdif_stream_put,
-+	},
-+};
-+
-+int snd_bcm2835_new_ctl(bcm2835_chip_t * chip)
-+{
-+	int err;
-+	unsigned int idx;
-+
-+	strcpy(chip->card->mixername, "Broadcom Mixer");
-+	for (idx = 0; idx < ARRAY_SIZE(snd_bcm2835_ctl); idx++) {
-+		err =
-+		    snd_ctl_add(chip->card,
-+				snd_ctl_new1(&snd_bcm2835_ctl[idx], chip));
-+		if (err < 0)
-+			return err;
-+	}
-+	for (idx = 0; idx < ARRAY_SIZE(snd_bcm2835_spdif); idx++) {
-+		err = snd_ctl_add(chip->card,
-+				snd_ctl_new1(&snd_bcm2835_spdif[idx], chip));
-+		if (err < 0)
-+			return err;
-+	}
-+	return 0;
-+}
---- /dev/null
-+++ b/sound/arm/bcm2835-pcm.c
-@@ -0,0 +1,557 @@
-+/*****************************************************************************
-+* Copyright 2011 Broadcom Corporation.  All rights reserved.
-+*
-+* Unless you and Broadcom execute a separate written software license
-+* agreement governing use of this software, this software is licensed to you
-+* under the terms of the GNU General Public License version 2, available at
-+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
-+*
-+* Notwithstanding the above, under no circumstances may you combine this
-+* software in any way with any other Broadcom software provided under a
-+* license other than the GPL, without Broadcom's express prior written
-+* consent.
-+*****************************************************************************/
-+
-+#include <linux/interrupt.h>
-+#include <linux/slab.h>
-+
-+#include <sound/asoundef.h>
-+
-+#include "bcm2835.h"
-+
-+/* hardware definition */
-+static struct snd_pcm_hardware snd_bcm2835_playback_hw = {
-+	.info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
-+		 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID),
-+	.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
-+	.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
-+	.rate_min = 8000,
-+	.rate_max = 48000,
-+	.channels_min = 1,
-+	.channels_max = 2,
-+	.buffer_bytes_max = 128 * 1024,
-+	.period_bytes_min =   1 * 1024,
-+	.period_bytes_max = 128 * 1024,
-+	.periods_min = 1,
-+	.periods_max = 128,
-+};
-+
-+static struct snd_pcm_hardware snd_bcm2835_playback_spdif_hw = {
-+	.info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
-+		 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID),
-+	.formats = SNDRV_PCM_FMTBIT_S16_LE,
-+	.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_44100 |
-+		SNDRV_PCM_RATE_48000,
-+	.rate_min = 44100,
-+	.rate_max = 48000,
-+	.channels_min = 2,
-+	.channels_max = 2,
-+	.buffer_bytes_max = 128 * 1024,
-+	.period_bytes_min =   1 * 1024,
-+	.period_bytes_max = 128 * 1024,
-+	.periods_min = 1,
-+	.periods_max = 128,
-+};
-+
-+static void snd_bcm2835_playback_free(struct snd_pcm_runtime *runtime)
-+{
-+	audio_info("Freeing up alsa stream here ..\n");
-+	if (runtime->private_data)
-+		kfree(runtime->private_data);
-+	runtime->private_data = NULL;
-+}
-+
-+static irqreturn_t bcm2835_playback_fifo_irq(int irq, void *dev_id)
-+{
-+	bcm2835_alsa_stream_t *alsa_stream = (bcm2835_alsa_stream_t *) dev_id;
-+	uint32_t consumed = 0;
-+	int new_period = 0;
-+
-+	audio_info(" .. IN\n");
-+
-+	audio_info("alsa_stream=%p substream=%p\n", alsa_stream,
-+		   alsa_stream ? alsa_stream->substream : 0);
-+
-+	if (alsa_stream->open)
-+		consumed = bcm2835_audio_retrieve_buffers(alsa_stream);
-+
-+	/* We get called only if playback was triggered, So, the number of buffers we retrieve in
-+	 * each iteration are the buffers that have been played out already
-+	 */
-+
-+	if (alsa_stream->period_size) {
-+		if ((alsa_stream->pos / alsa_stream->period_size) !=
-+		    ((alsa_stream->pos + consumed) / alsa_stream->period_size))
-+			new_period = 1;
-+	}
-+	audio_debug("updating pos cur: %d + %d max:%d period_bytes:%d, hw_ptr: %d new_period:%d\n",
-+		      alsa_stream->pos,
-+		      consumed,
-+		      alsa_stream->buffer_size,
-+			  (int)(alsa_stream->period_size*alsa_stream->substream->runtime->periods),
-+			  frames_to_bytes(alsa_stream->substream->runtime, alsa_stream->substream->runtime->status->hw_ptr),
-+			  new_period);
-+	if (alsa_stream->buffer_size) {
-+		alsa_stream->pos += consumed &~ (1<<30);
-+		alsa_stream->pos %= alsa_stream->buffer_size;
-+	}
-+
-+	if (alsa_stream->substream) {
-+		if (new_period)
-+			snd_pcm_period_elapsed(alsa_stream->substream);
-+	} else {
-+		audio_warning(" unexpected NULL substream\n");
-+	}
-+	audio_info(" .. OUT\n");
-+
-+	return IRQ_HANDLED;
-+}
-+
-+/* open callback */
-+static int snd_bcm2835_playback_open_generic(
-+		struct snd_pcm_substream *substream, int spdif)
-+{
-+	bcm2835_chip_t *chip = snd_pcm_substream_chip(substream);
-+	struct snd_pcm_runtime *runtime = substream->runtime;
-+	bcm2835_alsa_stream_t *alsa_stream;
-+	int idx;
-+	int err;
-+
-+	audio_info(" .. IN (%d)\n", substream->number);
-+
-+	if(mutex_lock_interruptible(&chip->audio_mutex))
-+	{
-+		audio_error("Interrupted whilst waiting for lock\n");
-+		return -EINTR;
-+	}
-+	audio_info("Alsa open (%d)\n", substream->number);
-+	idx = substream->number;
-+
-+	if (spdif && chip->opened != 0) {
-+		err = -EBUSY;
-+		goto out;
-+	}
-+	else if (!spdif && (chip->opened & (1 << idx))) {
-+		err = -EBUSY;
-+		goto out;
-+	}
-+	if (idx > MAX_SUBSTREAMS) {
-+		audio_error
-+		    ("substream(%d) device doesn't exist max(%d) substreams allowed\n",
-+		     idx, MAX_SUBSTREAMS);
-+		err = -ENODEV;
-+		goto out;
-+	}
-+
-+	/* Check if we are ready */
-+	if (!(chip->avail_substreams & (1 << idx))) {
-+		/* We are not ready yet */
-+		audio_error("substream(%d) device is not ready yet\n", idx);
-+		err = -EAGAIN;
-+		goto out;
-+	}
-+
-+	alsa_stream = kzalloc(sizeof(bcm2835_alsa_stream_t), GFP_KERNEL);
-+	if (alsa_stream == NULL) {
-+		err = -ENOMEM;
-+		goto out;
-+	}
-+
-+	/* Initialise alsa_stream */
-+	alsa_stream->chip = chip;
-+	alsa_stream->substream = substream;
-+	alsa_stream->idx = idx;
-+
-+	sema_init(&alsa_stream->buffers_update_sem, 0);
-+	sema_init(&alsa_stream->control_sem, 0);
-+	spin_lock_init(&alsa_stream->lock);
-+
-+	/* Enabled in start trigger, called on each "fifo irq" after that */
-+	alsa_stream->enable_fifo_irq = 0;
-+	alsa_stream->fifo_irq_handler = bcm2835_playback_fifo_irq;
-+
-+	err = bcm2835_audio_open(alsa_stream);
-+	if (err != 0) {
-+		kfree(alsa_stream);
-+		goto out;
-+	}
-+	runtime->private_data = alsa_stream;
-+	runtime->private_free = snd_bcm2835_playback_free;
-+	if (spdif) {
-+		runtime->hw = snd_bcm2835_playback_spdif_hw;
-+	} else {
-+		/* clear spdif status, as we are not in spdif mode */
-+		chip->spdif_status = 0;
-+		runtime->hw = snd_bcm2835_playback_hw;
-+	}
-+	/* minimum 16 bytes alignment (for vchiq bulk transfers) */
-+	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
-+				   16);
-+
-+	chip->alsa_stream[idx] = alsa_stream;
-+
-+	chip->opened |= (1 << idx);
-+	alsa_stream->open = 1;
-+	alsa_stream->draining = 1;
-+
-+out:
-+	mutex_unlock(&chip->audio_mutex);
-+
-+	audio_info(" .. OUT =%d\n", err);
-+
-+	return err;
-+}
-+
-+static int snd_bcm2835_playback_open(struct snd_pcm_substream *substream)
-+{
-+	return snd_bcm2835_playback_open_generic(substream, 0);
-+}
-+
-+static int snd_bcm2835_playback_spdif_open(struct snd_pcm_substream *substream)
-+{
-+	return snd_bcm2835_playback_open_generic(substream, 1);
-+}
-+
-+/* close callback */
-+static int snd_bcm2835_playback_close(struct snd_pcm_substream *substream)
-+{
-+	/* the hardware-specific codes will be here */
-+
-+	bcm2835_chip_t *chip;
-+	struct snd_pcm_runtime *runtime;
-+	bcm2835_alsa_stream_t *alsa_stream;
-+
-+	audio_info(" .. IN\n");
-+
-+	chip = snd_pcm_substream_chip(substream);
-+	if(mutex_lock_interruptible(&chip->audio_mutex))
-+	{
-+		audio_error("Interrupted whilst waiting for lock\n");
-+		return -EINTR;
-+	}
-+	runtime = substream->runtime;
-+	alsa_stream = runtime->private_data;
-+
-+	audio_info("Alsa close\n");
-+
-+	/*
-+	 * Call stop if it's still running. This happens when app
-+	 * is force killed and we don't get a stop trigger.
-+	 */
-+	if (alsa_stream->running) {
-+		int err;
-+		err = bcm2835_audio_stop(alsa_stream);
-+		alsa_stream->running = 0;
-+		if (err != 0)
-+			audio_error(" Failed to STOP alsa device\n");
-+	}
-+
-+	alsa_stream->period_size = 0;
-+	alsa_stream->buffer_size = 0;
-+
-+	if (alsa_stream->open) {
-+		alsa_stream->open = 0;
-+		bcm2835_audio_close(alsa_stream);
-+	}
-+	if (alsa_stream->chip)
-+		alsa_stream->chip->alsa_stream[alsa_stream->idx] = NULL;
-+	/*
-+	 * Do not free up alsa_stream here, it will be freed up by
-+	 * runtime->private_free callback we registered in *_open above
-+	 */
-+
-+	chip->opened &= ~(1 << substream->number);
-+
-+	mutex_unlock(&chip->audio_mutex);
-+	audio_info(" .. OUT\n");
-+
-+	return 0;
-+}
-+
-+/* hw_params callback */
-+static int snd_bcm2835_pcm_hw_params(struct snd_pcm_substream *substream,
-+				     struct snd_pcm_hw_params *params)
-+{
-+	struct snd_pcm_runtime *runtime = substream->runtime;
-+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
-+	int err;
-+
-+	audio_info(" .. IN\n");
-+
-+	err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
-+	if (err < 0) {
-+		audio_error
-+		    (" pcm_lib_malloc failed to allocated pages for buffers\n");
-+		return err;
-+	}
-+
-+	alsa_stream->channels = params_channels(params);
-+	alsa_stream->params_rate = params_rate(params);
-+	alsa_stream->pcm_format_width = snd_pcm_format_width(params_format (params));
-+	audio_info(" .. OUT\n");
-+
-+	return err;
-+}
-+
-+/* hw_free callback */
-+static int snd_bcm2835_pcm_hw_free(struct snd_pcm_substream *substream)
-+{
-+	audio_info(" .. IN\n");
-+	return snd_pcm_lib_free_pages(substream);
-+}
-+
-+/* prepare callback */
-+static int snd_bcm2835_pcm_prepare(struct snd_pcm_substream *substream)
-+{
-+	bcm2835_chip_t *chip = snd_pcm_substream_chip(substream);
-+	struct snd_pcm_runtime *runtime = substream->runtime;
-+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
-+	int channels;
-+	int err;
-+
-+	audio_info(" .. IN\n");
-+
-+	/* notify the vchiq that it should enter spdif passthrough mode by
-+	 * setting channels=0 (see
-+	 * https://github.com/raspberrypi/linux/issues/528) */
-+	if (chip->spdif_status & IEC958_AES0_NONAUDIO)
-+		channels = 0;
-+	else
-+		channels = alsa_stream->channels;
-+
-+	err = bcm2835_audio_set_params(alsa_stream, channels,
-+				       alsa_stream->params_rate,
-+				       alsa_stream->pcm_format_width);
-+	if (err < 0) {
-+		audio_error(" error setting hw params\n");
-+	}
-+
-+	bcm2835_audio_setup(alsa_stream);
-+
-+	/* in preparation of the stream, set the controls (volume level) of the stream */
-+	bcm2835_audio_set_ctls(alsa_stream->chip);
-+
-+
-+	memset(&alsa_stream->pcm_indirect, 0, sizeof(alsa_stream->pcm_indirect));
-+
-+	alsa_stream->pcm_indirect.hw_buffer_size =
-+	alsa_stream->pcm_indirect.sw_buffer_size =
-+		snd_pcm_lib_buffer_bytes(substream);
-+
-+	alsa_stream->buffer_size = snd_pcm_lib_buffer_bytes(substream);
-+	alsa_stream->period_size = snd_pcm_lib_period_bytes(substream);
-+	alsa_stream->pos = 0;
-+
-+	audio_debug("buffer_size=%d, period_size=%d pos=%d frame_bits=%d\n",
-+		      alsa_stream->buffer_size, alsa_stream->period_size,
-+		      alsa_stream->pos, runtime->frame_bits);
-+
-+	audio_info(" .. OUT\n");
-+	return 0;
-+}
-+
-+static void snd_bcm2835_pcm_transfer(struct snd_pcm_substream *substream,
-+				    struct snd_pcm_indirect *rec, size_t bytes)
-+{
-+	struct snd_pcm_runtime *runtime = substream->runtime;
-+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
-+	void *src = (void *)(substream->runtime->dma_area + rec->sw_data);
-+	int err;
-+
-+	err = bcm2835_audio_write(alsa_stream, bytes, src);
-+	if (err)
-+		audio_error(" Failed to transfer to alsa device (%d)\n", err);
-+
-+}
-+
-+static int snd_bcm2835_pcm_ack(struct snd_pcm_substream *substream)
-+{
-+	struct snd_pcm_runtime *runtime = substream->runtime;
-+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
-+	struct snd_pcm_indirect *pcm_indirect = &alsa_stream->pcm_indirect;
-+
-+	pcm_indirect->hw_queue_size = runtime->hw.buffer_bytes_max;
-+	snd_pcm_indirect_playback_transfer(substream, pcm_indirect,
-+					   snd_bcm2835_pcm_transfer);
-+	return 0;
-+}
-+
-+/* trigger callback */
-+static int snd_bcm2835_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-+{
-+	struct snd_pcm_runtime *runtime = substream->runtime;
-+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
-+	int err = 0;
-+
-+	audio_info(" .. IN\n");
-+
-+	switch (cmd) {
-+	case SNDRV_PCM_TRIGGER_START:
-+		audio_debug("bcm2835_AUDIO_TRIGGER_START running=%d\n",
-+			      alsa_stream->running);
-+		if (!alsa_stream->running) {
-+			err = bcm2835_audio_start(alsa_stream);
-+			if (err == 0) {
-+				alsa_stream->pcm_indirect.hw_io =
-+				alsa_stream->pcm_indirect.hw_data =
-+					bytes_to_frames(runtime,
-+							alsa_stream->pos);
-+				substream->ops->ack(substream);
-+				alsa_stream->running = 1;
-+				alsa_stream->draining = 1;
-+			} else {
-+				audio_error(" Failed to START alsa device (%d)\n", err);
-+			}
-+		}
-+		break;
-+	case SNDRV_PCM_TRIGGER_STOP:
-+		audio_debug
-+		    ("bcm2835_AUDIO_TRIGGER_STOP running=%d draining=%d\n",
-+			     alsa_stream->running, runtime->status->state == SNDRV_PCM_STATE_DRAINING);
-+		if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
-+			audio_info("DRAINING\n");
-+			alsa_stream->draining = 1;
-+		} else {
-+			audio_info("DROPPING\n");
-+			alsa_stream->draining = 0;
-+		}
-+		if (alsa_stream->running) {
-+			err = bcm2835_audio_stop(alsa_stream);
-+			if (err != 0)
-+				audio_error(" Failed to STOP alsa device (%d)\n", err);
-+			alsa_stream->running = 0;
-+		}
-+		break;
-+	default:
-+		err = -EINVAL;
-+	}
-+
-+	audio_info(" .. OUT\n");
-+	return err;
-+}
-+
-+/* pointer callback */
-+static snd_pcm_uframes_t
-+snd_bcm2835_pcm_pointer(struct snd_pcm_substream *substream)
-+{
-+	struct snd_pcm_runtime *runtime = substream->runtime;
-+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
-+
-+	audio_info(" .. IN\n");
-+
-+	audio_debug("pcm_pointer... (%d) hwptr=%d appl=%d pos=%d\n", 0,
-+		      frames_to_bytes(runtime, runtime->status->hw_ptr),
-+		      frames_to_bytes(runtime, runtime->control->appl_ptr),
-+		      alsa_stream->pos);
-+
-+	audio_info(" .. OUT\n");
-+	return snd_pcm_indirect_playback_pointer(substream,
-+						 &alsa_stream->pcm_indirect,
-+						 alsa_stream->pos);
-+}
-+
-+static int snd_bcm2835_pcm_lib_ioctl(struct snd_pcm_substream *substream,
-+				     unsigned int cmd, void *arg)
-+{
-+	int ret = snd_pcm_lib_ioctl(substream, cmd, arg);
-+	audio_info(" .. substream=%p, cmd=%d, arg=%p (%x) ret=%d\n", substream,
-+		    cmd, arg, arg ? *(unsigned *)arg : 0, ret);
-+	return ret;
-+}
-+
-+/* operators */
-+static struct snd_pcm_ops snd_bcm2835_playback_ops = {
-+	.open = snd_bcm2835_playback_open,
-+	.close = snd_bcm2835_playback_close,
-+	.ioctl = snd_bcm2835_pcm_lib_ioctl,
-+	.hw_params = snd_bcm2835_pcm_hw_params,
-+	.hw_free = snd_bcm2835_pcm_hw_free,
-+	.prepare = snd_bcm2835_pcm_prepare,
-+	.trigger = snd_bcm2835_pcm_trigger,
-+	.pointer = snd_bcm2835_pcm_pointer,
-+	.ack = snd_bcm2835_pcm_ack,
-+};
-+
-+static struct snd_pcm_ops snd_bcm2835_playback_spdif_ops = {
-+	.open = snd_bcm2835_playback_spdif_open,
-+	.close = snd_bcm2835_playback_close,
-+	.ioctl = snd_bcm2835_pcm_lib_ioctl,
-+	.hw_params = snd_bcm2835_pcm_hw_params,
-+	.hw_free = snd_bcm2835_pcm_hw_free,
-+	.prepare = snd_bcm2835_pcm_prepare,
-+	.trigger = snd_bcm2835_pcm_trigger,
-+	.pointer = snd_bcm2835_pcm_pointer,
-+	.ack = snd_bcm2835_pcm_ack,
-+};
-+
-+/* create a pcm device */
-+int snd_bcm2835_new_pcm(bcm2835_chip_t * chip)
-+{
-+	struct snd_pcm *pcm;
-+	int err;
-+
-+	audio_info(" .. IN\n");
-+	mutex_init(&chip->audio_mutex);
-+	if(mutex_lock_interruptible(&chip->audio_mutex))
-+	{
-+		audio_error("Interrupted whilst waiting for lock\n");
-+		return -EINTR;
-+	}
-+	err =
-+	    snd_pcm_new(chip->card, "bcm2835 ALSA", 0, MAX_SUBSTREAMS, 0, &pcm);
-+	if (err < 0)
-+		goto out;
-+	pcm->private_data = chip;
-+	strcpy(pcm->name, "bcm2835 ALSA");
-+	chip->pcm = pcm;
-+	chip->dest = AUDIO_DEST_AUTO;
-+	chip->volume = alsa2chip(0);
-+	chip->mute = CTRL_VOL_UNMUTE;	/*disable mute on startup */
-+	/* set operators */
-+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
-+			&snd_bcm2835_playback_ops);
-+
-+	/* pre-allocation of buffers */
-+	/* NOTE: this may fail */
-+	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
-+					      snd_dma_continuous_data
-+					      (GFP_KERNEL), 64 * 1024,
-+					      64 * 1024);
-+
-+out:
-+	mutex_unlock(&chip->audio_mutex);
-+	audio_info(" .. OUT\n");
-+
-+	return 0;
-+}
-+
-+int snd_bcm2835_new_spdif_pcm(bcm2835_chip_t * chip)
-+{
-+	struct snd_pcm *pcm;
-+	int err;
-+
-+	audio_info(" .. IN\n");
-+	if(mutex_lock_interruptible(&chip->audio_mutex))
-+	{
-+		audio_error("Interrupted whilst waiting for lock\n");
-+		return -EINTR;
-+	}
-+	err = snd_pcm_new(chip->card, "bcm2835 ALSA", 1, 1, 0, &pcm);
-+	if (err < 0)
-+		goto out;
-+
-+	pcm->private_data = chip;
-+	strcpy(pcm->name, "bcm2835 IEC958/HDMI");
-+	chip->pcm_spdif = pcm;
-+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
-+			&snd_bcm2835_playback_spdif_ops);
-+
-+	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
-+					      snd_dma_continuous_data (GFP_KERNEL),
-+					      64 * 1024, 64 * 1024);
-+out:
-+	mutex_unlock(&chip->audio_mutex);
-+	audio_info(" .. OUT\n");
-+
-+	return 0;
-+}
---- /dev/null
-+++ b/sound/arm/bcm2835-vchiq.c
-@@ -0,0 +1,902 @@
-+/*****************************************************************************
-+* Copyright 2011 Broadcom Corporation.  All rights reserved.
-+*
-+* Unless you and Broadcom execute a separate written software license
-+* agreement governing use of this software, this software is licensed to you
-+* under the terms of the GNU General Public License version 2, available at
-+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
-+*
-+* Notwithstanding the above, under no circumstances may you combine this
-+* software in any way with any other Broadcom software provided under a
-+* license other than the GPL, without Broadcom's express prior written
-+* consent.
-+*****************************************************************************/
-+
-+#include <linux/device.h>
-+#include <sound/core.h>
-+#include <sound/initval.h>
-+#include <sound/pcm.h>
-+#include <linux/io.h>
-+#include <linux/interrupt.h>
-+#include <linux/fs.h>
-+#include <linux/file.h>
-+#include <linux/mm.h>
-+#include <linux/syscalls.h>
-+#include <asm/uaccess.h>
-+#include <linux/slab.h>
-+#include <linux/delay.h>
-+#include <linux/atomic.h>
-+#include <linux/module.h>
-+#include <linux/completion.h>
-+
-+#include "bcm2835.h"
-+
-+/* ---- Include Files -------------------------------------------------------- */
-+
-+#include "interface/vchi/vchi.h"
-+#include "vc_vchi_audioserv_defs.h"
-+
-+/* ---- Private Constants and Types ------------------------------------------ */
-+
-+#define BCM2835_AUDIO_STOP           0
-+#define BCM2835_AUDIO_START          1
-+#define BCM2835_AUDIO_WRITE          2
-+
-+/* Logging macros (for remapping to other logging mechanisms, i.e., printf) */
-+#ifdef AUDIO_DEBUG_ENABLE
-+	#define LOG_ERR( fmt, arg... )   pr_err( "%s:%d " fmt, __func__, __LINE__, ##arg)
-+	#define LOG_WARN( fmt, arg... )  pr_info( "%s:%d " fmt, __func__, __LINE__, ##arg)
-+	#define LOG_INFO( fmt, arg... )  pr_info( "%s:%d " fmt, __func__, __LINE__, ##arg)
-+	#define LOG_DBG( fmt, arg... )   pr_info( "%s:%d " fmt, __func__, __LINE__, ##arg)
-+#else
-+	#define LOG_ERR( fmt, arg... )   pr_err( "%s:%d " fmt, __func__, __LINE__, ##arg)
-+	#define LOG_WARN( fmt, arg... )
-+	#define LOG_INFO( fmt, arg... )
-+	#define LOG_DBG( fmt, arg... )
-+#endif
-+
-+typedef struct opaque_AUDIO_INSTANCE_T {
-+	uint32_t num_connections;
-+	VCHI_SERVICE_HANDLE_T vchi_handle[VCHI_MAX_NUM_CONNECTIONS];
-+	struct completion msg_avail_comp;
-+	struct mutex vchi_mutex;
-+	bcm2835_alsa_stream_t *alsa_stream;
-+	int32_t result;
-+	short peer_version;
-+} AUDIO_INSTANCE_T;
-+
-+bool force_bulk = false;
-+
-+/* ---- Private Variables ---------------------------------------------------- */
-+
-+/* ---- Private Function Prototypes ------------------------------------------ */
-+
-+/* ---- Private Functions ---------------------------------------------------- */
-+
-+static int bcm2835_audio_stop_worker(bcm2835_alsa_stream_t * alsa_stream);
-+static int bcm2835_audio_start_worker(bcm2835_alsa_stream_t * alsa_stream);
-+static int bcm2835_audio_write_worker(bcm2835_alsa_stream_t *alsa_stream,
-+				      uint32_t count, void *src);
-+
-+typedef struct {
-+	struct work_struct my_work;
-+	bcm2835_alsa_stream_t *alsa_stream;
-+	int cmd;
-+	void *src;
-+	uint32_t count;
-+} my_work_t;
-+
-+static void my_wq_function(struct work_struct *work)
-+{
-+	my_work_t *w = (my_work_t *) work;
-+	int ret = -9;
-+	LOG_DBG(" .. IN %p:%d\n", w->alsa_stream, w->cmd);
-+	switch (w->cmd) {
-+	case BCM2835_AUDIO_START:
-+		ret = bcm2835_audio_start_worker(w->alsa_stream);
-+		break;
-+	case BCM2835_AUDIO_STOP:
-+		ret = bcm2835_audio_stop_worker(w->alsa_stream);
-+		break;
-+	case BCM2835_AUDIO_WRITE:
-+		ret = bcm2835_audio_write_worker(w->alsa_stream, w->count,
-+						 w->src);
-+		break;
-+	default:
-+		LOG_ERR(" Unexpected work: %p:%d\n", w->alsa_stream, w->cmd);
-+		break;
-+	}
-+	kfree((void *)work);
-+	LOG_DBG(" .. OUT %d\n", ret);
-+}
-+
-+int bcm2835_audio_start(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	int ret = -1;
-+	LOG_DBG(" .. IN\n");
-+	if (alsa_stream->my_wq) {
-+		my_work_t *work = kmalloc(sizeof(my_work_t), GFP_ATOMIC);
-+		/*--- Queue some work (item 1) ---*/
-+		if (work) {
-+			INIT_WORK((struct work_struct *)work, my_wq_function);
-+			work->alsa_stream = alsa_stream;
-+			work->cmd = BCM2835_AUDIO_START;
-+			if (queue_work
-+			    (alsa_stream->my_wq, (struct work_struct *)work))
-+				ret = 0;
-+		} else
-+			LOG_ERR(" .. Error: NULL work kmalloc\n");
-+	}
-+	LOG_DBG(" .. OUT %d\n", ret);
-+	return ret;
-+}
-+
-+int bcm2835_audio_stop(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	int ret = -1;
-+	LOG_DBG(" .. IN\n");
-+	if (alsa_stream->my_wq) {
-+		my_work_t *work = kmalloc(sizeof(my_work_t), GFP_ATOMIC);
-+		 /*--- Queue some work (item 1) ---*/
-+		if (work) {
-+			INIT_WORK((struct work_struct *)work, my_wq_function);
-+			work->alsa_stream = alsa_stream;
-+			work->cmd = BCM2835_AUDIO_STOP;
-+			if (queue_work
-+			    (alsa_stream->my_wq, (struct work_struct *)work))
-+				ret = 0;
-+		} else
-+			LOG_ERR(" .. Error: NULL work kmalloc\n");
-+	}
-+	LOG_DBG(" .. OUT %d\n", ret);
-+	return ret;
-+}
-+
-+int bcm2835_audio_write(bcm2835_alsa_stream_t *alsa_stream,
-+			uint32_t count, void *src)
-+{
-+	int ret = -1;
-+	LOG_DBG(" .. IN\n");
-+	if (alsa_stream->my_wq) {
-+		my_work_t *work = kmalloc(sizeof(my_work_t), GFP_ATOMIC);
-+		 /*--- Queue some work (item 1) ---*/
-+		if (work) {
-+			INIT_WORK((struct work_struct *)work, my_wq_function);
-+			work->alsa_stream = alsa_stream;
-+			work->cmd = BCM2835_AUDIO_WRITE;
-+			work->src = src;
-+			work->count = count;
-+			if (queue_work
-+			    (alsa_stream->my_wq, (struct work_struct *)work))
-+				ret = 0;
-+		} else
-+			LOG_ERR(" .. Error: NULL work kmalloc\n");
-+	}
-+	LOG_DBG(" .. OUT %d\n", ret);
-+	return ret;
-+}
-+
-+void my_workqueue_init(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	alsa_stream->my_wq = alloc_workqueue("my_queue", WQ_HIGHPRI, 1);
-+	return;
-+}
-+
-+void my_workqueue_quit(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	if (alsa_stream->my_wq) {
-+		flush_workqueue(alsa_stream->my_wq);
-+		destroy_workqueue(alsa_stream->my_wq);
-+		alsa_stream->my_wq = NULL;
-+	}
-+	return;
-+}
-+
-+static void audio_vchi_callback(void *param,
-+				const VCHI_CALLBACK_REASON_T reason,
-+				void *msg_handle)
-+{
-+	AUDIO_INSTANCE_T *instance = (AUDIO_INSTANCE_T *) param;
-+	int32_t status;
-+	int32_t msg_len;
-+	VC_AUDIO_MSG_T m;
-+	LOG_DBG(" .. IN instance=%p, handle=%p, alsa=%p, reason=%d, handle=%p\n",
-+		instance, instance ? instance->vchi_handle[0] : NULL, instance ? instance->alsa_stream : NULL, reason, msg_handle);
-+
-+	if (reason != VCHI_CALLBACK_MSG_AVAILABLE) {
-+		return;
-+	}
-+	if (!instance) {
-+		LOG_ERR(" .. instance is null\n");
-+		BUG();
-+		return;
-+  }
-+  if (!instance->vchi_handle[0]) {
-+		LOG_ERR(" .. instance->vchi_handle[0] is null\n");
-+		BUG();
-+		return;
-+  }
-+	status = vchi_msg_dequeue(instance->vchi_handle[0],
-+				  &m, sizeof m, &msg_len, VCHI_FLAGS_NONE);
-+	if (m.type == VC_AUDIO_MSG_TYPE_RESULT) {
-+		LOG_DBG
-+		    (" .. instance=%p, m.type=VC_AUDIO_MSG_TYPE_RESULT, success=%d\n",
-+		     instance, m.u.result.success);
-+		instance->result = m.u.result.success;
-+		complete(&instance->msg_avail_comp);
-+	} else if (m.type == VC_AUDIO_MSG_TYPE_COMPLETE) {
-+		bcm2835_alsa_stream_t *alsa_stream = instance->alsa_stream;
-+		irq_handler_t callback = (irq_handler_t) m.u.complete.callback;
-+		LOG_DBG
-+		    (" .. instance=%p, m.type=VC_AUDIO_MSG_TYPE_COMPLETE, complete=%d\n",
-+		     instance, m.u.complete.count);
-+		if (alsa_stream && callback) {
-+			atomic_add(m.u.complete.count, &alsa_stream->retrieved);
-+			callback(0, alsa_stream);
-+		} else {
-+			LOG_ERR(" .. unexpected alsa_stream=%p, callback=%p\n",
-+				alsa_stream, callback);
-+		}
-+	} else {
-+		LOG_ERR(" .. unexpected m.type=%d\n", m.type);
-+	}
-+	LOG_DBG(" .. OUT\n");
-+}
-+
-+static AUDIO_INSTANCE_T *vc_vchi_audio_init(VCHI_INSTANCE_T vchi_instance,
-+					    VCHI_CONNECTION_T **
-+					    vchi_connections,
-+					    uint32_t num_connections)
-+{
-+	uint32_t i;
-+	AUDIO_INSTANCE_T *instance;
-+	int status;
-+
-+	LOG_DBG("%s: start", __func__);
-+
-+	if (num_connections > VCHI_MAX_NUM_CONNECTIONS) {
-+		LOG_ERR("%s: unsupported number of connections %u (max=%u)\n",
-+			__func__, num_connections, VCHI_MAX_NUM_CONNECTIONS);
-+
-+		return NULL;
-+	}
-+	/* Allocate memory for this instance */
-+	instance = kmalloc(sizeof(*instance), GFP_KERNEL);
-+	if (!instance)
-+		return NULL;
-+
-+	memset(instance, 0, sizeof(*instance));
-+	instance->num_connections = num_connections;
-+
-+	/* Create a lock for exclusive, serialized VCHI connection access */
-+	mutex_init(&instance->vchi_mutex);
-+	/* Open the VCHI service connections */
-+	for (i = 0; i < num_connections; i++) {
-+		SERVICE_CREATION_T params = {
-+			VCHI_VERSION_EX(VC_AUDIOSERV_VER, VC_AUDIOSERV_MIN_VER),
-+			VC_AUDIO_SERVER_NAME,	// 4cc service code
-+			vchi_connections[i],	// passed in fn pointers
-+			0,	// rx fifo size (unused)
-+			0,	// tx fifo size (unused)
-+			audio_vchi_callback,	// service callback
-+			instance,	// service callback parameter
-+			1,	//TODO: remove VCOS_FALSE,   // unaligned bulk recieves
-+			1,	//TODO: remove VCOS_FALSE,   // unaligned bulk transmits
-+			0	// want crc check on bulk transfers
-+		};
-+
-+		LOG_DBG("%s: about to open %i\n", __func__, i);
-+		status = vchi_service_open(vchi_instance, &params,
-+					   &instance->vchi_handle[i]);
-+		LOG_DBG("%s: opened %i: %p=%d\n", __func__, i, instance->vchi_handle[i], status);
-+		if (status) {
-+			LOG_ERR
-+			    ("%s: failed to open VCHI service connection (status=%d)\n",
-+			     __func__, status);
-+
-+			goto err_close_services;
-+		}
-+		/* Finished with the service for now */
-+		vchi_service_release(instance->vchi_handle[i]);
-+	}
-+
-+	LOG_DBG("%s: okay\n", __func__);
-+	return instance;
-+
-+err_close_services:
-+	for (i = 0; i < instance->num_connections; i++) {
-+		LOG_ERR("%s: closing %i: %p\n", __func__, i, instance->vchi_handle[i]);
-+		if (instance->vchi_handle[i])
-+			vchi_service_close(instance->vchi_handle[i]);
-+	}
-+
-+	kfree(instance);
-+	LOG_ERR("%s: error\n", __func__);
-+
-+	return NULL;
-+}
-+
-+static int32_t vc_vchi_audio_deinit(AUDIO_INSTANCE_T * instance)
-+{
-+	uint32_t i;
-+
-+	LOG_DBG(" .. IN\n");
-+
-+	if (instance == NULL) {
-+		LOG_ERR("%s: invalid handle %p\n", __func__, instance);
-+
-+		return -1;
-+	}
-+
-+	LOG_DBG(" .. about to lock (%d)\n", instance->num_connections);
-+	if(mutex_lock_interruptible(&instance->vchi_mutex))
-+	{
-+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
-+		return -EINTR;
-+	}
-+
-+	/* Close all VCHI service connections */
-+	for (i = 0; i < instance->num_connections; i++) {
-+		int32_t success;
-+		LOG_DBG(" .. %i:closing %p\n", i, instance->vchi_handle[i]);
-+		vchi_service_use(instance->vchi_handle[i]);
-+
-+		success = vchi_service_close(instance->vchi_handle[i]);
-+		if (success != 0) {
-+			LOG_DBG
-+			    ("%s: failed to close VCHI service connection (status=%d)\n",
-+			     __func__, success);
-+		}
-+	}
-+
-+	mutex_unlock(&instance->vchi_mutex);
-+
-+	kfree(instance);
-+
-+	LOG_DBG(" .. OUT\n");
-+
-+	return 0;
-+}
-+
-+static int bcm2835_audio_open_connection(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	static VCHI_INSTANCE_T vchi_instance;
-+	static VCHI_CONNECTION_T *vchi_connection;
-+	static int initted;
-+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
-+	int ret;
-+	LOG_DBG(" .. IN\n");
-+
-+	LOG_INFO("%s: start\n", __func__);
-+	BUG_ON(instance);
-+	if (instance) {
-+		LOG_ERR("%s: VCHI instance already open (%p)\n",
-+			__func__, instance);
-+		instance->alsa_stream = alsa_stream;
-+		alsa_stream->instance = instance;
-+		ret = 0;	// xxx todo -1;
-+		goto err_free_mem;
-+	}
-+
-+	/* Initialize and create a VCHI connection */
-+	if (!initted) {
-+	  ret = vchi_initialise(&vchi_instance);
-+	  if (ret != 0) {
-+		  LOG_ERR("%s: failed to initialise VCHI instance (ret=%d)\n",
-+			  __func__, ret);
-+
-+		  ret = -EIO;
-+		  goto err_free_mem;
-+	  }
-+	  ret = vchi_connect(NULL, 0, vchi_instance);
-+	  if (ret != 0) {
-+		  LOG_ERR("%s: failed to connect VCHI instance (ret=%d)\n",
-+			  __func__, ret);
-+
-+		  ret = -EIO;
-+		  goto err_free_mem;
-+	  }
-+	initted = 1;
-+	}
-+
-+	/* Initialize an instance of the audio service */
-+	instance = vc_vchi_audio_init(vchi_instance, &vchi_connection, 1);
-+
-+	if (instance == NULL) {
-+		LOG_ERR("%s: failed to initialize audio service\n", __func__);
-+
-+		ret = -EPERM;
-+		goto err_free_mem;
-+	}
-+
-+	instance->alsa_stream = alsa_stream;
-+	alsa_stream->instance = instance;
-+
-+	LOG_DBG(" success !\n");
-+err_free_mem:
-+	LOG_DBG(" .. OUT\n");
-+
-+	return ret;
-+}
-+
-+int bcm2835_audio_open(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	AUDIO_INSTANCE_T *instance;
-+	VC_AUDIO_MSG_T m;
-+	int32_t success;
-+	int ret;
-+	LOG_DBG(" .. IN\n");
-+
-+	my_workqueue_init(alsa_stream);
-+
-+	ret = bcm2835_audio_open_connection(alsa_stream);
-+	if (ret != 0) {
-+		ret = -1;
-+		goto exit;
-+	}
-+	instance = alsa_stream->instance;
-+	LOG_DBG(" instance (%p)\n", instance);
-+
-+	if(mutex_lock_interruptible(&instance->vchi_mutex))
-+	{
-+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
-+		return -EINTR;
-+	}
-+	vchi_service_use(instance->vchi_handle[0]);
-+
-+	m.type = VC_AUDIO_MSG_TYPE_OPEN;
-+
-+	/* Send the message to the videocore */
-+	success = vchi_msg_queue(instance->vchi_handle[0],
-+				 &m, sizeof m,
-+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
-+
-+	if (success != 0) {
-+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
-+			__func__, success);
-+
-+		ret = -1;
-+		goto unlock;
-+	}
-+
-+	ret = 0;
-+
-+unlock:
-+	vchi_service_release(instance->vchi_handle[0]);
-+	mutex_unlock(&instance->vchi_mutex);
-+exit:
-+	LOG_DBG(" .. OUT\n");
-+	return ret;
-+}
-+
-+static int bcm2835_audio_set_ctls_chan(bcm2835_alsa_stream_t * alsa_stream,
-+				       bcm2835_chip_t * chip)
-+{
-+	VC_AUDIO_MSG_T m;
-+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
-+	int32_t success;
-+	int ret;
-+	LOG_DBG(" .. IN\n");
-+
-+	LOG_INFO
-+	    (" Setting ALSA dest(%d), volume(%d)\n", chip->dest, chip->volume);
-+
-+	if(mutex_lock_interruptible(&instance->vchi_mutex))
-+	{
-+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
-+		return -EINTR;
-+	}
-+	vchi_service_use(instance->vchi_handle[0]);
-+
-+	instance->result = -1;
-+
-+	m.type = VC_AUDIO_MSG_TYPE_CONTROL;
-+	m.u.control.dest = chip->dest;
-+	m.u.control.volume = chip->volume;
-+
-+	/* Create the message available completion */
-+	init_completion(&instance->msg_avail_comp);
-+
-+	/* Send the message to the videocore */
-+	success = vchi_msg_queue(instance->vchi_handle[0],
-+				 &m, sizeof m,
-+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
-+
-+	if (success != 0) {
-+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
-+			__func__, success);
-+
-+		ret = -1;
-+		goto unlock;
-+	}
-+
-+	/* We are expecting a reply from the videocore */
-+	ret = wait_for_completion_interruptible(&instance->msg_avail_comp);
-+	if (ret) {
-+		LOG_DBG("%s: failed on waiting for event (status=%d)\n",
-+			__func__, success);
-+		goto unlock;
-+	}
-+
-+	if (instance->result != 0) {
-+		LOG_ERR("%s: result=%d\n", __func__, instance->result);
-+
-+		ret = -1;
-+		goto unlock;
-+	}
-+
-+	ret = 0;
-+
-+unlock:
-+	vchi_service_release(instance->vchi_handle[0]);
-+	mutex_unlock(&instance->vchi_mutex);
-+
-+	LOG_DBG(" .. OUT\n");
-+	return ret;
-+}
-+
-+int bcm2835_audio_set_ctls(bcm2835_chip_t * chip)
-+{
-+	int i;
-+	int ret = 0;
-+	LOG_DBG(" .. IN\n");
-+	LOG_DBG(" Setting ALSA dest(%d), volume(%d)\n", chip->dest, chip->volume);
-+
-+	/* change ctls for all substreams */
-+	for (i = 0; i < MAX_SUBSTREAMS; i++) {
-+		if (chip->avail_substreams & (1 << i)) {
-+			if (!chip->alsa_stream[i])
-+			{
-+				LOG_DBG(" No ALSA stream available?! %i:%p (%x)\n", i, chip->alsa_stream[i], chip->avail_substreams);
-+				ret = 0;
-+			}
-+			else if (bcm2835_audio_set_ctls_chan /* returns 0 on success */
-+				 (chip->alsa_stream[i], chip) != 0)
-+				 {
-+					LOG_ERR("Couldn't set the controls for stream %d\n", i);
-+					ret = -1;
-+				 }
-+			else LOG_DBG(" Controls set for stream %d\n", i);
-+		}
-+	}
-+	LOG_DBG(" .. OUT ret=%d\n", ret);
-+	return ret;
-+}
-+
-+int bcm2835_audio_set_params(bcm2835_alsa_stream_t * alsa_stream,
-+			     uint32_t channels, uint32_t samplerate,
-+			     uint32_t bps)
-+{
-+	VC_AUDIO_MSG_T m;
-+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
-+	int32_t success;
-+	int ret;
-+	LOG_DBG(" .. IN\n");
-+
-+	LOG_INFO
-+	    (" Setting ALSA channels(%d), samplerate(%d), bits-per-sample(%d)\n",
-+	     channels, samplerate, bps);
-+
-+	/* resend ctls - alsa_stream may not have been open when first send */
-+	ret = bcm2835_audio_set_ctls_chan(alsa_stream, alsa_stream->chip);
-+	if (ret != 0) {
-+		LOG_ERR(" Alsa controls not supported\n");
-+		return -EINVAL;
-+	}
-+
-+	if(mutex_lock_interruptible(&instance->vchi_mutex))
-+	{
-+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
-+		return -EINTR;
-+	}
-+	vchi_service_use(instance->vchi_handle[0]);
-+
-+	instance->result = -1;
-+
-+	m.type = VC_AUDIO_MSG_TYPE_CONFIG;
-+	m.u.config.channels = channels;
-+	m.u.config.samplerate = samplerate;
-+	m.u.config.bps = bps;
-+
-+	/* Create the message available completion */
-+	init_completion(&instance->msg_avail_comp);
-+
-+	/* Send the message to the videocore */
-+	success = vchi_msg_queue(instance->vchi_handle[0],
-+				 &m, sizeof m,
-+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
-+
-+	if (success != 0) {
-+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
-+			__func__, success);
-+
-+		ret = -1;
-+		goto unlock;
-+	}
-+
-+	/* We are expecting a reply from the videocore */
-+	ret = wait_for_completion_interruptible(&instance->msg_avail_comp);
-+	if (ret) {
-+		LOG_DBG("%s: failed on waiting for event (status=%d)\n",
-+			__func__, success);
-+		goto unlock;
-+	}
-+
-+	if (instance->result != 0) {
-+		LOG_ERR("%s: result=%d", __func__, instance->result);
-+
-+		ret = -1;
-+		goto unlock;
-+	}
-+
-+	ret = 0;
-+
-+unlock:
-+	vchi_service_release(instance->vchi_handle[0]);
-+	mutex_unlock(&instance->vchi_mutex);
-+
-+	LOG_DBG(" .. OUT\n");
-+	return ret;
-+}
-+
-+int bcm2835_audio_setup(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	LOG_DBG(" .. IN\n");
-+
-+	LOG_DBG(" .. OUT\n");
-+
-+	return 0;
-+}
-+
-+static int bcm2835_audio_start_worker(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	VC_AUDIO_MSG_T m;
-+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
-+	int32_t success;
-+	int ret;
-+	LOG_DBG(" .. IN\n");
-+
-+	if(mutex_lock_interruptible(&instance->vchi_mutex))
-+	{
-+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
-+		return -EINTR;
-+	}
-+	vchi_service_use(instance->vchi_handle[0]);
-+
-+	m.type = VC_AUDIO_MSG_TYPE_START;
-+
-+	/* Send the message to the videocore */
-+	success = vchi_msg_queue(instance->vchi_handle[0],
-+				 &m, sizeof m,
-+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
-+
-+	if (success != 0) {
-+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
-+			__func__, success);
-+
-+		ret = -1;
-+		goto unlock;
-+	}
-+
-+	ret = 0;
-+
-+unlock:
-+	vchi_service_release(instance->vchi_handle[0]);
-+	mutex_unlock(&instance->vchi_mutex);
-+	LOG_DBG(" .. OUT\n");
-+	return ret;
-+}
-+
-+static int bcm2835_audio_stop_worker(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	VC_AUDIO_MSG_T m;
-+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
-+	int32_t success;
-+	int ret;
-+	LOG_DBG(" .. IN\n");
-+
-+	if(mutex_lock_interruptible(&instance->vchi_mutex))
-+	{
-+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
-+		return -EINTR;
-+	}
-+	vchi_service_use(instance->vchi_handle[0]);
-+
-+	m.type = VC_AUDIO_MSG_TYPE_STOP;
-+	m.u.stop.draining = alsa_stream->draining;
-+
-+	/* Send the message to the videocore */
-+	success = vchi_msg_queue(instance->vchi_handle[0],
-+				 &m, sizeof m,
-+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
-+
-+	if (success != 0) {
-+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
-+			__func__, success);
-+
-+		ret = -1;
-+		goto unlock;
-+	}
-+
-+	ret = 0;
-+
-+unlock:
-+	vchi_service_release(instance->vchi_handle[0]);
-+	mutex_unlock(&instance->vchi_mutex);
-+	LOG_DBG(" .. OUT\n");
-+	return ret;
-+}
-+
-+int bcm2835_audio_close(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	VC_AUDIO_MSG_T m;
-+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
-+	int32_t success;
-+	int ret;
-+	LOG_DBG(" .. IN\n");
-+
-+	my_workqueue_quit(alsa_stream);
-+
-+	if(mutex_lock_interruptible(&instance->vchi_mutex))
-+	{
-+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
-+		return -EINTR;
-+	}
-+	vchi_service_use(instance->vchi_handle[0]);
-+
-+	m.type = VC_AUDIO_MSG_TYPE_CLOSE;
-+
-+	/* Create the message available completion */
-+	init_completion(&instance->msg_avail_comp);
-+
-+	/* Send the message to the videocore */
-+	success = vchi_msg_queue(instance->vchi_handle[0],
-+				 &m, sizeof m,
-+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
-+
-+	if (success != 0) {
-+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
-+			__func__, success);
-+		ret = -1;
-+		goto unlock;
-+	}
-+
-+	ret = wait_for_completion_interruptible(&instance->msg_avail_comp);
-+	if (ret) {
-+		LOG_DBG("%s: failed on waiting for event (status=%d)\n",
-+			__func__, success);
-+		goto unlock;
-+	}
-+	if (instance->result != 0) {
-+		LOG_ERR("%s: failed result (status=%d)\n",
-+			__func__, instance->result);
-+
-+		ret = -1;
-+		goto unlock;
-+	}
-+
-+	ret = 0;
-+
-+unlock:
-+	vchi_service_release(instance->vchi_handle[0]);
-+	mutex_unlock(&instance->vchi_mutex);
-+
-+	/* Stop the audio service */
-+	if (instance) {
-+		vc_vchi_audio_deinit(instance);
-+		alsa_stream->instance = NULL;
-+	}
-+	LOG_DBG(" .. OUT\n");
-+	return ret;
-+}
-+
-+int bcm2835_audio_write_worker(bcm2835_alsa_stream_t *alsa_stream,
-+			       uint32_t count, void *src)
-+{
-+	VC_AUDIO_MSG_T m;
-+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
-+	int32_t success;
-+	int ret;
-+
-+	LOG_DBG(" .. IN\n");
-+
-+	LOG_INFO(" Writing %d bytes from %p\n", count, src);
-+
-+	if(mutex_lock_interruptible(&instance->vchi_mutex))
-+	{
-+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
-+		return -EINTR;
-+	}
-+	vchi_service_use(instance->vchi_handle[0]);
-+
-+	if ( instance->peer_version==0 && vchi_get_peer_version(instance->vchi_handle[0], &instance->peer_version) == 0 ) {
-+		LOG_DBG("%s: client version %d connected\n", __func__, instance->peer_version);
-+	}
-+	m.type = VC_AUDIO_MSG_TYPE_WRITE;
-+	m.u.write.count = count;
-+	// old version uses bulk, new version uses control
-+	m.u.write.max_packet = instance->peer_version < 2 || force_bulk ? 0:4000;
-+	m.u.write.callback = alsa_stream->fifo_irq_handler;
-+	m.u.write.cookie = alsa_stream;
-+	m.u.write.silence = src == NULL;
-+
-+	/* Send the message to the videocore */
-+	success = vchi_msg_queue(instance->vchi_handle[0],
-+				 &m, sizeof m,
-+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
-+
-+	if (success != 0) {
-+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
-+			__func__, success);
-+
-+		ret = -1;
-+		goto unlock;
-+	}
-+	if (!m.u.write.silence) {
-+		if (m.u.write.max_packet == 0) {
-+			/* Send the message to the videocore */
-+			success = vchi_bulk_queue_transmit(instance->vchi_handle[0],
-+							   src, count,
-+							   0 *
-+							   VCHI_FLAGS_BLOCK_UNTIL_QUEUED
-+							   +
-+							   1 *
-+							   VCHI_FLAGS_BLOCK_UNTIL_DATA_READ,
-+							   NULL);
-+		} else {
-+			while (count > 0) {
-+				int bytes = min((int)m.u.write.max_packet, (int)count);
-+				success = vchi_msg_queue(instance->vchi_handle[0],
-+							 src, bytes,
-+							 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
-+				src = (char *)src + bytes;
-+				count -= bytes;
-+			}
-+		}
-+		if (success != 0) {
-+			LOG_ERR
-+			    ("%s: failed on vchi_bulk_queue_transmit (status=%d)\n",
-+			     __func__, success);
-+
-+			ret = -1;
-+			goto unlock;
-+		}
-+	}
-+	ret = 0;
-+
-+unlock:
-+	vchi_service_release(instance->vchi_handle[0]);
-+	mutex_unlock(&instance->vchi_mutex);
-+	LOG_DBG(" .. OUT\n");
-+	return ret;
-+}
-+
-+/**
-+  * Returns all buffers from arm->vc
-+  */
-+void bcm2835_audio_flush_buffers(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	LOG_DBG(" .. IN\n");
-+	LOG_DBG(" .. OUT\n");
-+	return;
-+}
-+
-+/**
-+  * Forces VC to flush(drop) its filled playback buffers and
-+  * return them the us. (VC->ARM)
-+  */
-+void bcm2835_audio_flush_playback_buffers(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	LOG_DBG(" .. IN\n");
-+	LOG_DBG(" .. OUT\n");
-+}
-+
-+uint32_t bcm2835_audio_retrieve_buffers(bcm2835_alsa_stream_t * alsa_stream)
-+{
-+	uint32_t count = atomic_read(&alsa_stream->retrieved);
-+	atomic_sub(count, &alsa_stream->retrieved);
-+	return count;
-+}
-+
-+module_param(force_bulk, bool, 0444);
-+MODULE_PARM_DESC(force_bulk, "Force use of vchiq bulk for audio");
---- /dev/null
-+++ b/sound/arm/bcm2835.c
-@@ -0,0 +1,511 @@
-+/*****************************************************************************
-+* Copyright 2011 Broadcom Corporation.  All rights reserved.
-+*
-+* Unless you and Broadcom execute a separate written software license
-+* agreement governing use of this software, this software is licensed to you
-+* under the terms of the GNU General Public License version 2, available at
-+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
-+*
-+* Notwithstanding the above, under no circumstances may you combine this
-+* software in any way with any other Broadcom software provided under a
-+* license other than the GPL, without Broadcom's express prior written
-+* consent.
-+*****************************************************************************/
-+
-+#include <linux/platform_device.h>
-+
-+#include <linux/init.h>
-+#include <linux/slab.h>
-+#include <linux/module.h>
-+#include <linux/of.h>
-+
-+#include "bcm2835.h"
-+
-+/* module parameters (see "Module Parameters") */
-+/* SNDRV_CARDS: maximum number of cards supported by this module */
-+static int index[MAX_SUBSTREAMS] = {[0 ... (MAX_SUBSTREAMS - 1)] = -1 };
-+static char *id[MAX_SUBSTREAMS] = {[0 ... (MAX_SUBSTREAMS - 1)] = NULL };
-+static int enable[MAX_SUBSTREAMS] = {[0 ... (MAX_SUBSTREAMS - 1)] = 1 };
-+
-+/* HACKY global pointers needed for successive probes to work : ssp
-+ * But compared against the changes we will have to do in VC audio_ipc code
-+ * to export 8 audio_ipc devices as a single IPC device and then monitor all
-+ * four devices in a thread, this gets things done quickly and should be easier
-+ * to debug if we run into issues
-+ */
-+
-+static struct snd_card *g_card = NULL;
-+static bcm2835_chip_t *g_chip = NULL;
-+
-+static int snd_bcm2835_free(bcm2835_chip_t * chip)
-+{
-+	kfree(chip);
-+	return 0;
-+}
-+
-+/* component-destructor
-+ * (see "Management of Cards and Components")
-+ */
-+static int snd_bcm2835_dev_free(struct snd_device *device)
-+{
-+	return snd_bcm2835_free(device->device_data);
-+}
-+
-+/* chip-specific constructor
-+ * (see "Management of Cards and Components")
-+ */
-+static int snd_bcm2835_create(struct snd_card *card,
-+					struct platform_device *pdev,
-+					bcm2835_chip_t ** rchip)
-+{
-+	bcm2835_chip_t *chip;
-+	int err;
-+	static struct snd_device_ops ops = {
-+		.dev_free = snd_bcm2835_dev_free,
-+	};
-+
-+	*rchip = NULL;
-+
-+	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
-+	if (chip == NULL)
-+		return -ENOMEM;
-+
-+	chip->card = card;
-+
-+	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
-+	if (err < 0) {
-+		snd_bcm2835_free(chip);
-+		return err;
-+	}
-+
-+	*rchip = chip;
-+	return 0;
-+}
-+
-+static int snd_bcm2835_alsa_probe_dt(struct platform_device *pdev)
-+{
-+	struct device *dev = &pdev->dev;
-+	bcm2835_chip_t *chip;
-+	struct snd_card *card;
-+	u32 numchans;
-+	int err, i;
-+
-+	err = of_property_read_u32(dev->of_node, "brcm,pwm-channels",
-+				   &numchans);
-+	if (err) {
-+		dev_err(dev, "Failed to get DT property 'brcm,pwm-channels'");
-+		return err;
-+	}
-+
-+	if (numchans == 0 || numchans > MAX_SUBSTREAMS) {
-+		numchans = MAX_SUBSTREAMS;
-+		dev_warn(dev, "Illegal 'brcm,pwm-channels' value, will use %u\n",
-+			 numchans);
-+	}
-+
-+	err = snd_card_new(NULL, -1, NULL, THIS_MODULE, 0, &card);
-+	if (err) {
-+		dev_err(dev, "Failed to create soundcard structure\n");
-+		return err;
-+	}
-+
-+	snd_card_set_dev(card, dev);
-+	strcpy(card->driver, "bcm2835");
-+	strcpy(card->shortname, "bcm2835 ALSA");
-+	sprintf(card->longname, "%s", card->shortname);
-+
-+	err = snd_bcm2835_create(card, pdev, &chip);
-+	if (err < 0) {
-+		dev_err(dev, "Failed to create bcm2835 chip\n");
-+		goto err_free;
-+	}
-+
-+	err = snd_bcm2835_new_pcm(chip);
-+	if (err < 0) {
-+		dev_err(dev, "Failed to create new bcm2835 pcm device\n");
-+		goto err_free;
-+	}
-+
-+	err = snd_bcm2835_new_spdif_pcm(chip);
-+	if (err < 0) {
-+		dev_err(dev, "Failed to create new bcm2835 spdif pcm device\n");
-+		goto err_free;
-+	}
-+
-+	err = snd_bcm2835_new_ctl(chip);
-+	if (err < 0) {
-+		dev_err(dev, "Failed to create new bcm2835 ctl\n");
-+		goto err_free;
-+	}
-+
-+	for (i = 0; i < numchans; i++) {
-+		chip->avail_substreams |= (1 << i);
-+		chip->pdev[i] = pdev;
-+	}
-+
-+	err = snd_card_register(card);
-+	if (err) {
-+		dev_err(dev, "Failed to register bcm2835 ALSA card \n");
-+		goto err_free;
-+	}
-+
-+	g_card = card;
-+	g_chip = chip;
-+	platform_set_drvdata(pdev, card);
-+	audio_info("bcm2835 ALSA card created with %u channels\n", numchans);
-+
-+	return 0;
-+
-+err_free:
-+	snd_card_free(card);
-+
-+	return err;
-+}
-+
-+static int snd_bcm2835_alsa_probe(struct platform_device *pdev)
-+{
-+	static int dev;
-+	bcm2835_chip_t *chip;
-+	struct snd_card *card;
-+	int err;
-+
-+	if (pdev->dev.of_node)
-+		return snd_bcm2835_alsa_probe_dt(pdev);
-+
-+	if (dev >= MAX_SUBSTREAMS)
-+		return -ENODEV;
-+
-+	if (!enable[dev]) {
-+		dev++;
-+		return -ENOENT;
-+	}
-+
-+	if (dev > 0)
-+		goto add_register_map;
-+
-+	err = snd_card_new(NULL, index[dev], id[dev], THIS_MODULE, 0, &g_card);
-+	if (err < 0)
-+		goto out;
-+
-+	snd_card_set_dev(g_card, &pdev->dev);
-+	strcpy(g_card->driver, "bcm2835");
-+	strcpy(g_card->shortname, "bcm2835 ALSA");
-+	sprintf(g_card->longname, "%s", g_card->shortname);
-+
-+	err = snd_bcm2835_create(g_card, pdev, &chip);
-+	if (err < 0) {
-+		dev_err(&pdev->dev, "Failed to create bcm2835 chip\n");
-+		goto out_bcm2835_create;
-+	}
-+
-+	g_chip = chip;
-+	err = snd_bcm2835_new_pcm(chip);
-+	if (err < 0) {
-+		dev_err(&pdev->dev, "Failed to create new BCM2835 pcm device\n");
-+		goto out_bcm2835_new_pcm;
-+	}
-+
-+	err = snd_bcm2835_new_spdif_pcm(chip);
-+	if (err < 0) {
-+		dev_err(&pdev->dev, "Failed to create new BCM2835 spdif pcm device\n");
-+		goto out_bcm2835_new_spdif;
-+	}
-+
-+	err = snd_bcm2835_new_ctl(chip);
-+	if (err < 0) {
-+		dev_err(&pdev->dev, "Failed to create new BCM2835 ctl\n");
-+		goto out_bcm2835_new_ctl;
-+	}
-+
-+add_register_map:
-+	card = g_card;
-+	chip = g_chip;
-+
-+	BUG_ON(!(card && chip));
-+
-+	chip->avail_substreams |= (1 << dev);
-+	chip->pdev[dev] = pdev;
-+
-+	if (dev == 0) {
-+		err = snd_card_register(card);
-+		if (err < 0) {
-+			dev_err(&pdev->dev,
-+				"Failed to register bcm2835 ALSA card \n");
-+			goto out_card_register;
-+		}
-+		platform_set_drvdata(pdev, card);
-+		audio_info("bcm2835 ALSA card created!\n");
-+	} else {
-+		audio_info("bcm2835 ALSA chip created!\n");
-+		platform_set_drvdata(pdev, (void *)dev);
-+	}
-+
-+	dev++;
-+
-+	return 0;
-+
-+out_card_register:
-+out_bcm2835_new_ctl:
-+out_bcm2835_new_spdif:
-+out_bcm2835_new_pcm:
-+out_bcm2835_create:
-+	BUG_ON(!g_card);
-+	if (snd_card_free(g_card))
-+		dev_err(&pdev->dev, "Failed to free Registered alsa card\n");
-+	g_card = NULL;
-+out:
-+	dev = SNDRV_CARDS;	/* stop more avail_substreams from being probed */
-+	dev_err(&pdev->dev, "BCM2835 ALSA Probe failed !!\n");
-+	return err;
-+}
-+
-+static int snd_bcm2835_alsa_remove(struct platform_device *pdev)
-+{
-+	uint32_t idx;
-+	void *drv_data;
-+
-+	drv_data = platform_get_drvdata(pdev);
-+
-+	if (drv_data == (void *)g_card) {
-+		/* This is the card device */
-+		snd_card_free((struct snd_card *)drv_data);
-+		g_card = NULL;
-+		g_chip = NULL;
-+	} else {
-+		idx = (uint32_t) drv_data;
-+		if (g_card != NULL) {
-+			BUG_ON(!g_chip);
-+			/* We pass chip device numbers in audio ipc devices
-+			 * other than the one we registered our card with
-+			 */
-+			idx = (uint32_t) drv_data;
-+			BUG_ON(!idx || idx > MAX_SUBSTREAMS);
-+			g_chip->avail_substreams &= ~(1 << idx);
-+			/* There should be atleast one substream registered
-+			 * after we are done here, as it wil be removed when
-+			 * the *remove* is called for the card device
-+			 */
-+			BUG_ON(!g_chip->avail_substreams);
-+		}
-+	}
-+
-+	platform_set_drvdata(pdev, NULL);
-+
-+	return 0;
-+}
-+
-+#ifdef CONFIG_PM
-+static int snd_bcm2835_alsa_suspend(struct platform_device *pdev,
-+				    pm_message_t state)
-+{
-+	return 0;
-+}
-+
-+static int snd_bcm2835_alsa_resume(struct platform_device *pdev)
-+{
-+	return 0;
-+}
-+
-+#endif
-+
-+static const struct of_device_id snd_bcm2835_of_match_table[] = {
-+	{ .compatible = "brcm,bcm2835-audio", },
-+	{},
-+};
-+MODULE_DEVICE_TABLE(of, snd_bcm2835_of_match_table);
-+
-+static struct platform_driver bcm2835_alsa0_driver = {
-+	.probe = snd_bcm2835_alsa_probe,
-+	.remove = snd_bcm2835_alsa_remove,
-+#ifdef CONFIG_PM
-+	.suspend = snd_bcm2835_alsa_suspend,
-+	.resume = snd_bcm2835_alsa_resume,
-+#endif
-+	.driver = {
-+		   .name = "bcm2835_AUD0",
-+		   .owner = THIS_MODULE,
-+		   .of_match_table = snd_bcm2835_of_match_table,
-+		   },
-+};
-+
-+static struct platform_driver bcm2835_alsa1_driver = {
-+	.probe = snd_bcm2835_alsa_probe,
-+	.remove = snd_bcm2835_alsa_remove,
-+#ifdef CONFIG_PM
-+	.suspend = snd_bcm2835_alsa_suspend,
-+	.resume = snd_bcm2835_alsa_resume,
-+#endif
-+	.driver = {
-+		   .name = "bcm2835_AUD1",
-+		   .owner = THIS_MODULE,
-+		   },
-+};
-+
-+static struct platform_driver bcm2835_alsa2_driver = {
-+	.probe = snd_bcm2835_alsa_probe,
-+	.remove = snd_bcm2835_alsa_remove,
-+#ifdef CONFIG_PM
-+	.suspend = snd_bcm2835_alsa_suspend,
-+	.resume = snd_bcm2835_alsa_resume,
-+#endif
-+	.driver = {
-+		   .name = "bcm2835_AUD2",
-+		   .owner = THIS_MODULE,
-+		   },
-+};
-+
-+static struct platform_driver bcm2835_alsa3_driver = {
-+	.probe = snd_bcm2835_alsa_probe,
-+	.remove = snd_bcm2835_alsa_remove,
-+#ifdef CONFIG_PM
-+	.suspend = snd_bcm2835_alsa_suspend,
-+	.resume = snd_bcm2835_alsa_resume,
-+#endif
-+	.driver = {
-+		   .name = "bcm2835_AUD3",
-+		   .owner = THIS_MODULE,
-+		   },
-+};
-+
-+static struct platform_driver bcm2835_alsa4_driver = {
-+	.probe = snd_bcm2835_alsa_probe,
-+	.remove = snd_bcm2835_alsa_remove,
-+#ifdef CONFIG_PM
-+	.suspend = snd_bcm2835_alsa_suspend,
-+	.resume = snd_bcm2835_alsa_resume,
-+#endif
-+	.driver = {
-+		   .name = "bcm2835_AUD4",
-+		   .owner = THIS_MODULE,
-+		   },
-+};
-+
-+static struct platform_driver bcm2835_alsa5_driver = {
-+	.probe = snd_bcm2835_alsa_probe,
-+	.remove = snd_bcm2835_alsa_remove,
-+#ifdef CONFIG_PM
-+	.suspend = snd_bcm2835_alsa_suspend,
-+	.resume = snd_bcm2835_alsa_resume,
-+#endif
-+	.driver = {
-+		   .name = "bcm2835_AUD5",
-+		   .owner = THIS_MODULE,
-+		   },
-+};
-+
-+static struct platform_driver bcm2835_alsa6_driver = {
-+	.probe = snd_bcm2835_alsa_probe,
-+	.remove = snd_bcm2835_alsa_remove,
-+#ifdef CONFIG_PM
-+	.suspend = snd_bcm2835_alsa_suspend,
-+	.resume = snd_bcm2835_alsa_resume,
-+#endif
-+	.driver = {
-+		   .name = "bcm2835_AUD6",
-+		   .owner = THIS_MODULE,
-+		   },
-+};
-+
-+static struct platform_driver bcm2835_alsa7_driver = {
-+	.probe = snd_bcm2835_alsa_probe,
-+	.remove = snd_bcm2835_alsa_remove,
-+#ifdef CONFIG_PM
-+	.suspend = snd_bcm2835_alsa_suspend,
-+	.resume = snd_bcm2835_alsa_resume,
-+#endif
-+	.driver = {
-+		   .name = "bcm2835_AUD7",
-+		   .owner = THIS_MODULE,
-+		   },
-+};
-+
-+static int bcm2835_alsa_device_init(void)
-+{
-+	int err;
-+	err = platform_driver_register(&bcm2835_alsa0_driver);
-+	if (err) {
-+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
-+		goto out;
-+	}
-+
-+	err = platform_driver_register(&bcm2835_alsa1_driver);
-+	if (err) {
-+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
-+		goto unregister_0;
-+	}
-+
-+	err = platform_driver_register(&bcm2835_alsa2_driver);
-+	if (err) {
-+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
-+		goto unregister_1;
-+	}
-+
-+	err = platform_driver_register(&bcm2835_alsa3_driver);
-+	if (err) {
-+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
-+		goto unregister_2;
-+	}
-+
-+	err = platform_driver_register(&bcm2835_alsa4_driver);
-+	if (err) {
-+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
-+		goto unregister_3;
-+	}
-+
-+	err = platform_driver_register(&bcm2835_alsa5_driver);
-+	if (err) {
-+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
-+		goto unregister_4;
-+	}
-+
-+	err = platform_driver_register(&bcm2835_alsa6_driver);
-+	if (err) {
-+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
-+		goto unregister_5;
-+	}
-+
-+	err = platform_driver_register(&bcm2835_alsa7_driver);
-+	if (err) {
-+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
-+		goto unregister_6;
-+	}
-+
-+	return 0;
-+
-+unregister_6:
-+	platform_driver_unregister(&bcm2835_alsa6_driver);
-+unregister_5:
-+	platform_driver_unregister(&bcm2835_alsa5_driver);
-+unregister_4:
-+	platform_driver_unregister(&bcm2835_alsa4_driver);
-+unregister_3:
-+	platform_driver_unregister(&bcm2835_alsa3_driver);
-+unregister_2:
-+	platform_driver_unregister(&bcm2835_alsa2_driver);
-+unregister_1:
-+	platform_driver_unregister(&bcm2835_alsa1_driver);
-+unregister_0:
-+	platform_driver_unregister(&bcm2835_alsa0_driver);
-+out:
-+	return err;
-+}
-+
-+static void bcm2835_alsa_device_exit(void)
-+{
-+	platform_driver_unregister(&bcm2835_alsa0_driver);
-+	platform_driver_unregister(&bcm2835_alsa1_driver);
-+	platform_driver_unregister(&bcm2835_alsa2_driver);
-+	platform_driver_unregister(&bcm2835_alsa3_driver);
-+	platform_driver_unregister(&bcm2835_alsa4_driver);
-+	platform_driver_unregister(&bcm2835_alsa5_driver);
-+	platform_driver_unregister(&bcm2835_alsa6_driver);
-+	platform_driver_unregister(&bcm2835_alsa7_driver);
-+}
-+
-+late_initcall(bcm2835_alsa_device_init);
-+module_exit(bcm2835_alsa_device_exit);
-+
-+MODULE_AUTHOR("Dom Cobley");
-+MODULE_DESCRIPTION("Alsa driver for BCM2835 chip");
-+MODULE_LICENSE("GPL");
-+MODULE_ALIAS("platform:bcm2835_alsa");
---- /dev/null
-+++ b/sound/arm/bcm2835.h
-@@ -0,0 +1,167 @@
-+/*****************************************************************************
-+* Copyright 2011 Broadcom Corporation.  All rights reserved.
-+*
-+* Unless you and Broadcom execute a separate written software license
-+* agreement governing use of this software, this software is licensed to you
-+* under the terms of the GNU General Public License version 2, available at
-+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
-+*
-+* Notwithstanding the above, under no circumstances may you combine this
-+* software in any way with any other Broadcom software provided under a
-+* license other than the GPL, without Broadcom's express prior written
-+* consent.
-+*****************************************************************************/
-+
-+#ifndef __SOUND_ARM_BCM2835_H
-+#define __SOUND_ARM_BCM2835_H
-+
-+#include <linux/device.h>
-+#include <linux/list.h>
-+#include <linux/interrupt.h>
-+#include <linux/wait.h>
-+#include <sound/core.h>
-+#include <sound/initval.h>
-+#include <sound/pcm.h>
-+#include <sound/pcm_params.h>
-+#include <sound/pcm-indirect.h>
-+#include <linux/workqueue.h>
-+
-+/*
-+#define AUDIO_DEBUG_ENABLE
-+#define AUDIO_VERBOSE_DEBUG_ENABLE
-+*/
-+
-+/* Debug macros */
-+
-+#ifdef AUDIO_DEBUG_ENABLE
-+#ifdef AUDIO_VERBOSE_DEBUG_ENABLE
-+
-+#define audio_debug(fmt, arg...)	\
-+	printk(KERN_INFO"%s:%d " fmt, __func__, __LINE__, ##arg)
-+
-+#define audio_info(fmt, arg...)	\
-+	printk(KERN_INFO"%s:%d " fmt, __func__, __LINE__, ##arg)
-+
-+#else
-+
-+#define audio_debug(fmt, arg...)
-+
-+#define audio_info(fmt, arg...)
-+
-+#endif /* AUDIO_VERBOSE_DEBUG_ENABLE */
-+
-+#else
-+
-+#define audio_debug(fmt, arg...)
-+
-+#define audio_info(fmt, arg...)
-+
-+#endif /* AUDIO_DEBUG_ENABLE */
-+
-+#define audio_error(fmt, arg...)	\
-+	printk(KERN_ERR"%s:%d " fmt, __func__, __LINE__, ##arg)
-+
-+#define audio_warning(fmt, arg...)	\
-+	printk(KERN_WARNING"%s:%d " fmt, __func__, __LINE__, ##arg)
-+
-+#define audio_alert(fmt, arg...)	\
-+	printk(KERN_ALERT"%s:%d " fmt, __func__, __LINE__, ##arg)
-+
-+#define MAX_SUBSTREAMS			(8)
-+#define AVAIL_SUBSTREAMS_MASK		(0xff)
-+enum {
-+	CTRL_VOL_MUTE,
-+	CTRL_VOL_UNMUTE
-+};
-+
-+/* macros for alsa2chip and chip2alsa, instead of functions */
-+
-+#define alsa2chip(vol) (uint)(-((vol << 8) / 100))	/* convert alsa to chip volume (defined as macro rather than function call) */
-+#define chip2alsa(vol) -((vol * 100) >> 8)			/* convert chip to alsa volume */
-+
-+/* Some constants for values .. */
-+typedef enum {
-+	AUDIO_DEST_AUTO = 0,
-+	AUDIO_DEST_HEADPHONES = 1,
-+	AUDIO_DEST_HDMI = 2,
-+	AUDIO_DEST_MAX,
-+} SND_BCM2835_ROUTE_T;
-+
-+typedef enum {
-+	PCM_PLAYBACK_VOLUME,
-+	PCM_PLAYBACK_MUTE,
-+	PCM_PLAYBACK_DEVICE,
-+} SND_BCM2835_CTRL_T;
-+
-+/* definition of the chip-specific record */
-+typedef struct bcm2835_chip {
-+	struct snd_card *card;
-+	struct snd_pcm *pcm;
-+	struct snd_pcm *pcm_spdif;
-+	/* Bitmat for valid reg_base and irq numbers */
-+	uint32_t avail_substreams;
-+	struct platform_device *pdev[MAX_SUBSTREAMS];
-+	struct bcm2835_alsa_stream *alsa_stream[MAX_SUBSTREAMS];
-+
-+	int volume;
-+	int old_volume; /* stores the volume value whist muted */
-+	int dest;
-+	int mute;
-+
-+	unsigned int opened;
-+	unsigned int spdif_status;
-+	struct mutex audio_mutex;
-+} bcm2835_chip_t;
-+
-+typedef struct bcm2835_alsa_stream {
-+	bcm2835_chip_t *chip;
-+	struct snd_pcm_substream *substream;
-+	struct snd_pcm_indirect pcm_indirect;
-+
-+	struct semaphore buffers_update_sem;
-+	struct semaphore control_sem;
-+	spinlock_t lock;
-+	volatile uint32_t control;
-+	volatile uint32_t status;
-+
-+	int open;
-+	int running;
-+	int draining;
-+
-+	int channels;
-+	int params_rate;
-+	int pcm_format_width;
-+
-+	unsigned int pos;
-+	unsigned int buffer_size;
-+	unsigned int period_size;
-+
-+	uint32_t enable_fifo_irq;
-+	irq_handler_t fifo_irq_handler;
-+
-+	atomic_t retrieved;
-+	struct opaque_AUDIO_INSTANCE_T *instance;
-+	struct workqueue_struct *my_wq;
-+	int idx;
-+} bcm2835_alsa_stream_t;
-+
-+int snd_bcm2835_new_ctl(bcm2835_chip_t * chip);
-+int snd_bcm2835_new_pcm(bcm2835_chip_t * chip);
-+int snd_bcm2835_new_spdif_pcm(bcm2835_chip_t * chip);
-+
-+int bcm2835_audio_open(bcm2835_alsa_stream_t * alsa_stream);
-+int bcm2835_audio_close(bcm2835_alsa_stream_t * alsa_stream);
-+int bcm2835_audio_set_params(bcm2835_alsa_stream_t * alsa_stream,
-+			     uint32_t channels, uint32_t samplerate,
-+			     uint32_t bps);
-+int bcm2835_audio_setup(bcm2835_alsa_stream_t * alsa_stream);
-+int bcm2835_audio_start(bcm2835_alsa_stream_t * alsa_stream);
-+int bcm2835_audio_stop(bcm2835_alsa_stream_t * alsa_stream);
-+int bcm2835_audio_set_ctls(bcm2835_chip_t * chip);
-+int bcm2835_audio_write(bcm2835_alsa_stream_t * alsa_stream, uint32_t count,
-+			void *src);
-+uint32_t bcm2835_audio_retrieve_buffers(bcm2835_alsa_stream_t * alsa_stream);
-+void bcm2835_audio_flush_buffers(bcm2835_alsa_stream_t * alsa_stream);
-+void bcm2835_audio_flush_playback_buffers(bcm2835_alsa_stream_t * alsa_stream);
-+
-+#endif /* __SOUND_ARM_BCM2835_H */
---- /dev/null
-+++ b/sound/arm/vc_vchi_audioserv_defs.h
-@@ -0,0 +1,116 @@
-+/*****************************************************************************
-+* Copyright 2011 Broadcom Corporation.  All rights reserved.
-+*
-+* Unless you and Broadcom execute a separate written software license
-+* agreement governing use of this software, this software is licensed to you
-+* under the terms of the GNU General Public License version 2, available at
-+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
-+*
-+* Notwithstanding the above, under no circumstances may you combine this
-+* software in any way with any other Broadcom software provided under a
-+* license other than the GPL, without Broadcom's express prior written
-+* consent.
-+*****************************************************************************/
-+
-+#ifndef _VC_AUDIO_DEFS_H_
-+#define _VC_AUDIO_DEFS_H_
-+
-+#define VC_AUDIOSERV_MIN_VER 1
-+#define VC_AUDIOSERV_VER 2
-+
-+// FourCC code used for VCHI connection
-+#define VC_AUDIO_SERVER_NAME  MAKE_FOURCC("AUDS")
-+
-+// Maximum message length
-+#define VC_AUDIO_MAX_MSG_LEN  (sizeof( VC_AUDIO_MSG_T ))
-+
-+// List of screens that are currently supported
-+// All message types supported for HOST->VC direction
-+typedef enum {
-+	VC_AUDIO_MSG_TYPE_RESULT,	// Generic result
-+	VC_AUDIO_MSG_TYPE_COMPLETE,	// Generic result
-+	VC_AUDIO_MSG_TYPE_CONFIG,	// Configure audio
-+	VC_AUDIO_MSG_TYPE_CONTROL,	// Configure audio
-+	VC_AUDIO_MSG_TYPE_OPEN,	// Configure audio
-+	VC_AUDIO_MSG_TYPE_CLOSE,	// Configure audio
-+	VC_AUDIO_MSG_TYPE_START,	// Configure audio
-+	VC_AUDIO_MSG_TYPE_STOP,	// Configure audio
-+	VC_AUDIO_MSG_TYPE_WRITE,	// Configure audio
-+	VC_AUDIO_MSG_TYPE_MAX
-+} VC_AUDIO_MSG_TYPE;
-+
-+// configure the audio
-+typedef struct {
-+	uint32_t channels;
-+	uint32_t samplerate;
-+	uint32_t bps;
-+
-+} VC_AUDIO_CONFIG_T;
-+
-+typedef struct {
-+	uint32_t volume;
-+	uint32_t dest;
-+
-+} VC_AUDIO_CONTROL_T;
-+
-+// audio
-+typedef struct {
-+	uint32_t dummy;
-+
-+} VC_AUDIO_OPEN_T;
-+
-+// audio
-+typedef struct {
-+	uint32_t dummy;
-+
-+} VC_AUDIO_CLOSE_T;
-+// audio
-+typedef struct {
-+	uint32_t dummy;
-+
-+} VC_AUDIO_START_T;
-+// audio
-+typedef struct {
-+	uint32_t draining;
-+
-+} VC_AUDIO_STOP_T;
-+
-+// configure the write audio samples
-+typedef struct {
-+	uint32_t count;		// in bytes
-+	void *callback;
-+	void *cookie;
-+	uint16_t silence;
-+	uint16_t max_packet;
-+} VC_AUDIO_WRITE_T;
-+
-+// Generic result for a request (VC->HOST)
-+typedef struct {
-+	int32_t success;	// Success value
-+
-+} VC_AUDIO_RESULT_T;
-+
-+// Generic result for a request (VC->HOST)
-+typedef struct {
-+	int32_t count;		// Success value
-+	void *callback;
-+	void *cookie;
-+} VC_AUDIO_COMPLETE_T;
-+
-+// Message header for all messages in HOST->VC direction
-+typedef struct {
-+	int32_t type;		// Message type (VC_AUDIO_MSG_TYPE)
-+	union {
-+		VC_AUDIO_CONFIG_T config;
-+		VC_AUDIO_CONTROL_T control;
-+		VC_AUDIO_OPEN_T open;
-+		VC_AUDIO_CLOSE_T close;
-+		VC_AUDIO_START_T start;
-+		VC_AUDIO_STOP_T stop;
-+		VC_AUDIO_WRITE_T write;
-+		VC_AUDIO_RESULT_T result;
-+		VC_AUDIO_COMPLETE_T complete;
-+	} u;
-+} VC_AUDIO_MSG_T;
-+
-+#endif // _VC_AUDIO_DEFS_H_