diff options
author | Stijn Tintel <stijn@linux-ipv6.be> | 2019-02-02 21:53:15 +0100 |
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committer | Stijn Tintel <stijn@linux-ipv6.be> | 2019-02-06 07:39:39 +0200 |
commit | c30f7f402f1be7a7917b3dd604ee32be8ed20716 (patch) | |
tree | c858e61a864a9409408cf3eb58b7e8800112c2e6 /target/linux/brcm2708/patches-4.9/950-0038-bcm2708-alsa-sound-driver.patch | |
parent | 12310f05b7b080b016ec515796be437f4cd30b62 (diff) | |
download | upstream-c30f7f402f1be7a7917b3dd604ee32be8ed20716.tar.gz upstream-c30f7f402f1be7a7917b3dd604ee32be8ed20716.tar.bz2 upstream-c30f7f402f1be7a7917b3dd604ee32be8ed20716.zip |
brcm2708: drop 4.9 support
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Diffstat (limited to 'target/linux/brcm2708/patches-4.9/950-0038-bcm2708-alsa-sound-driver.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.9/950-0038-bcm2708-alsa-sound-driver.patch | 2715 |
1 files changed, 0 insertions, 2715 deletions
diff --git a/target/linux/brcm2708/patches-4.9/950-0038-bcm2708-alsa-sound-driver.patch b/target/linux/brcm2708/patches-4.9/950-0038-bcm2708-alsa-sound-driver.patch deleted file mode 100644 index 58b45dec6e..0000000000 --- a/target/linux/brcm2708/patches-4.9/950-0038-bcm2708-alsa-sound-driver.patch +++ /dev/null @@ -1,2715 +0,0 @@ -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_ |