You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
2715 lines
74 KiB
2715 lines
74 KiB
From 41a90e24c272c84fb8c6d23ac451f0c725dcded6 Mon Sep 17 00:00:00 2001
|
|
From: popcornmix <popcornmix@gmail.com>
|
|
Date: Mon, 26 Mar 2012 22:15:50 +0100
|
|
Subject: [PATCH] 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>
|
|
|
|
bcm2835: access controls under the audio mutex
|
|
|
|
I don't think the ALSA framework provides any kind of automatic
|
|
synchronization within the control callbacks. We most likely need
|
|
to ensure this manually, so add locking around all access to shared
|
|
mutable data. In particular, bcm2835_audio_set_ctls() should
|
|
probably always be called under our own audio lock.
|
|
|
|
snd-bcm2835: Don't allow responses from VC to be interrupted by user signals
|
|
|
|
There should always be a response, and retry after a signal interruption is not handled, so don't report
|
|
we are interruptible.
|
|
|
|
See: https://github.com/raspberrypi/linux/issues/1560
|
|
|
|
snd-bcm2835: Use bcm2835_hw params in preallocate
|
|
---
|
|
sound/arm/Kconfig | 7 +
|
|
sound/arm/Makefile | 5 +
|
|
sound/arm/bcm2835-ctl.c | 350 +++++++++++++++
|
|
sound/arm/bcm2835-pcm.c | 563 +++++++++++++++++++++++
|
|
sound/arm/bcm2835-vchiq.c | 889 +++++++++++++++++++++++++++++++++++++
|
|
sound/arm/bcm2835.c | 511 +++++++++++++++++++++
|
|
sound/arm/bcm2835.h | 167 +++++++
|
|
sound/arm/vc_vchi_audioserv_defs.h | 116 +++++
|
|
8 files changed, 2608 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/sound/arm/Kconfig
|
|
+++ b/sound/arm/Kconfig
|
|
@@ -32,6 +32,13 @@ 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_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
|
|
|
|
config SND_PXA2XX_LIB
|
|
--- 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/staging/vc04_services -Idrivers/staging/vc04_services/interface/vcos/linuxkernel -D__VCCOREVER__=0x04000000
|
|
--- /dev/null
|
|
+++ b/sound/arm/bcm2835-ctl.c
|
|
@@ -0,0 +1,350 @@
|
|
+/*****************************************************************************
|
|
+* 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);
|
|
+
|
|
+ if (mutex_lock_interruptible(&chip->audio_mutex))
|
|
+ return -EINTR;
|
|
+
|
|
+ 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;
|
|
+
|
|
+ mutex_unlock(&chip->audio_mutex);
|
|
+ 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 (mutex_lock_interruptible(&chip->audio_mutex))
|
|
+ return -EINTR;
|
|
+
|
|
+ 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); */
|
|
+ changed = 1; /* should return 0 to signify no change but the mixer takes this as the opposite sign (no idea why) */
|
|
+ goto unlock;
|
|
+ }
|
|
+ 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");
|
|
+ }
|
|
+
|
|
+unlock:
|
|
+ mutex_unlock(&chip->audio_mutex);
|
|
+ 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;
|
|
+
|
|
+ if (mutex_lock_interruptible(&chip->audio_mutex))
|
|
+ return -EINTR;
|
|
+
|
|
+ for (i = 0; i < 4; i++)
|
|
+ ucontrol->value.iec958.status[i] =
|
|
+ (chip->spdif_status >> (i * 8)) && 0xff;
|
|
+
|
|
+ mutex_unlock(&chip->audio_mutex);
|
|
+ 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;
|
|
+
|
|
+ if (mutex_lock_interruptible(&chip->audio_mutex))
|
|
+ return -EINTR;
|
|
+
|
|
+ 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;
|
|
+
|
|
+ mutex_unlock(&chip->audio_mutex);
|
|
+ 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;
|
|
+
|
|
+ if (mutex_lock_interruptible(&chip->audio_mutex))
|
|
+ return -EINTR;
|
|
+
|
|
+ for (i = 0; i < 4; i++)
|
|
+ ucontrol->value.iec958.status[i] =
|
|
+ (chip->spdif_status >> (i * 8)) & 0xff;
|
|
+
|
|
+ mutex_unlock(&chip->audio_mutex);
|
|
+ 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;
|
|
+
|
|
+ if (mutex_lock_interruptible(&chip->audio_mutex))
|
|
+ return -EINTR;
|
|
+
|
|
+ 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;
|
|
+
|
|
+ mutex_unlock(&chip->audio_mutex);
|
|
+ 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 +1,563 @@
|
|
+/*****************************************************************************
|
|
+* 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");
|
|
+
|
|
+ if (mutex_lock_interruptible(&chip->audio_mutex))
|
|
+ return -EINTR;
|
|
+
|
|
+ /* 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);
|
|
+
|
|
+ mutex_unlock(&chip->audio_mutex);
|
|
+ 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),
|
|
+ snd_bcm2835_playback_hw.buffer_bytes_max, snd_bcm2835_playback_hw.buffer_bytes_max);
|
|
+
|
|
+
|
|
+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);
|
|
+
|
|
+ /* 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),
|
|
+ snd_bcm2835_playback_spdif_hw.buffer_bytes_max, snd_bcm2835_playback_spdif_hw.buffer_bytes_max);
|
|
+out:
|
|
+ mutex_unlock(&chip->audio_mutex);
|
|
+ audio_info(" .. OUT\n");
|
|
+
|
|
+ return 0;
|
|
+}
|
|
--- /dev/null
|
|
+++ b/sound/arm/bcm2835-vchiq.c
|
|
@@ -0,0 +1,889 @@
|
|
+/*****************************************************************************
|
|
+* 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, ¶ms,
|
|
+ &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 */
|
|
+ wait_for_completion(&instance->msg_avail_comp);
|
|
+
|
|
+ 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 */
|
|
+ wait_for_completion(&instance->msg_avail_comp);
|
|
+
|
|
+ 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;
|
|
+ }
|
|
+
|
|
+ /* We are expecting a reply from the videocore */
|
|
+ wait_for_completion(&instance->msg_avail_comp);
|
|
+
|
|
+ if (instance->result != 0) {
|
|
+ LOG_ERR("%s: failed result (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);
|
|
+
|
|
+ /* 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(&pdev->dev, -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(&pdev->dev, 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_
|
|
|