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author | Felix Fietkau <nbd@openwrt.org> | 2016-01-17 10:42:23 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2016-01-17 10:42:23 +0000 |
commit | 4224b52c3acc7203e7c2535d6806f30432dae5e3 (patch) | |
tree | 7a847d3e84dfc3608555587c3b9958474fc17d72 /target/linux/brcm2708/patches-4.4/0036-bcm2708-alsa-sound-driver.patch | |
parent | cad399c87b7739c4b8eeb4119706860818f7d84f (diff) | |
download | mtk-20170518-4224b52c3acc7203e7c2535d6806f30432dae5e3.zip mtk-20170518-4224b52c3acc7203e7c2535d6806f30432dae5e3.tar.gz mtk-20170518-4224b52c3acc7203e7c2535d6806f30432dae5e3.tar.bz2 |
brcm2708: add linux 4.4 support
- random-bcm2708 and spi-bcm2708 have been removed.
- sound-soc-bcm2708-i2s has been upstreamed as sound-soc-bcm2835-i2s.
Let's keep linux 4.1 for a while, since linux 4.4 appears to have some issues
with multicast traffic on RPi ethernet:
https://gist.github.com/Noltari/5b1cfdecce5ed4bc08fd
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
SVN-Revision: 48266
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0036-bcm2708-alsa-sound-driver.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.4/0036-bcm2708-alsa-sound-driver.patch | 2678 |
1 files changed, 2678 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0036-bcm2708-alsa-sound-driver.patch b/target/linux/brcm2708/patches-4.4/0036-bcm2708-alsa-sound-driver.patch new file mode 100644 index 0000000..47cb912 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0036-bcm2708-alsa-sound-driver.patch @@ -0,0 +1,2678 @@ +From d3e64892070a0399dad4cdae9e72bb9c7801b86d Mon Sep 17 00:00:00 2001 +From: popcornmix <popcornmix@gmail.com> +Date: Mon, 26 Mar 2012 22:15:50 +0100 +Subject: [PATCH 036/127] 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> +--- + sound/arm/Kconfig | 8 + + sound/arm/Makefile | 5 + + sound/arm/bcm2835-ctl.c | 323 +++++++++++++ + sound/arm/bcm2835-pcm.c | 557 +++++++++++++++++++++++ + sound/arm/bcm2835-vchiq.c | 902 +++++++++++++++++++++++++++++++++++++ + sound/arm/bcm2835.c | 511 +++++++++++++++++++++ + sound/arm/bcm2835.h | 167 +++++++ + sound/arm/vc_vchi_audioserv_defs.h | 116 +++++ + 8 files changed, 2589 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 +@@ -40,5 +40,13 @@ config SND_PXA2XX_AC97 + Say Y or M if you want to support any AC97 codec attached to + the PXA2xx AC97 interface. + ++config SND_BCM2835 ++ tristate "BCM2835 ALSA driver" ++ depends on (ARCH_BCM2708 || ARCH_BCM2709 || ARCH_BCM2835) \ ++ && BCM2708_VCHIQ && SND ++ select SND_PCM ++ help ++ Say Y or M if you want to support BCM2835 Alsa pcm card driver ++ + endif # SND_ARM + +--- a/sound/arm/Makefile ++++ b/sound/arm/Makefile +@@ -14,3 +14,8 @@ snd-pxa2xx-lib-$(CONFIG_SND_PXA2XX_LIB_A + + obj-$(CONFIG_SND_PXA2XX_AC97) += snd-pxa2xx-ac97.o + snd-pxa2xx-ac97-objs := pxa2xx-ac97.o ++ ++obj-$(CONFIG_SND_BCM2835) += snd-bcm2835.o ++snd-bcm2835-objs := bcm2835.o bcm2835-ctl.o bcm2835-pcm.o bcm2835-vchiq.o ++ ++ccflags-y += -Idrivers/misc/vc04_services -Idrivers/misc/vc04_services/interface/vcos/linuxkernel -D__VCCOREVER__=0x04000000 +--- /dev/null ++++ b/sound/arm/bcm2835-ctl.c +@@ -0,0 +1,323 @@ ++/***************************************************************************** ++* Copyright 2011 Broadcom Corporation. All rights reserved. ++* ++* Unless you and Broadcom execute a separate written software license ++* agreement governing use of this software, this software is licensed to you ++* under the terms of the GNU General Public License version 2, available at ++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). ++* ++* Notwithstanding the above, under no circumstances may you combine this ++* software in any way with any other Broadcom software provided under a ++* license other than the GPL, without Broadcom's express prior written ++* consent. ++*****************************************************************************/ ++ ++#include <linux/platform_device.h> ++#include <linux/init.h> ++#include <linux/io.h> ++#include <linux/jiffies.h> ++#include <linux/slab.h> ++#include <linux/time.h> ++#include <linux/wait.h> ++#include <linux/delay.h> ++#include <linux/moduleparam.h> ++#include <linux/sched.h> ++ ++#include <sound/core.h> ++#include <sound/control.h> ++#include <sound/pcm.h> ++#include <sound/pcm_params.h> ++#include <sound/rawmidi.h> ++#include <sound/initval.h> ++#include <sound/tlv.h> ++#include <sound/asoundef.h> ++ ++#include "bcm2835.h" ++ ++/* volume maximum and minimum in terms of 0.01dB */ ++#define CTRL_VOL_MAX 400 ++#define CTRL_VOL_MIN -10239 /* originally -10240 */ ++ ++ ++static int snd_bcm2835_ctl_info(struct snd_kcontrol *kcontrol, ++ struct snd_ctl_elem_info *uinfo) ++{ ++ audio_info(" ... IN\n"); ++ if (kcontrol->private_value == PCM_PLAYBACK_VOLUME) { ++ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; ++ uinfo->count = 1; ++ uinfo->value.integer.min = CTRL_VOL_MIN; ++ uinfo->value.integer.max = CTRL_VOL_MAX; /* 2303 */ ++ } else if (kcontrol->private_value == PCM_PLAYBACK_MUTE) { ++ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; ++ uinfo->count = 1; ++ uinfo->value.integer.min = 0; ++ uinfo->value.integer.max = 1; ++ } else if (kcontrol->private_value == PCM_PLAYBACK_DEVICE) { ++ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; ++ uinfo->count = 1; ++ uinfo->value.integer.min = 0; ++ uinfo->value.integer.max = AUDIO_DEST_MAX-1; ++ } ++ audio_info(" ... OUT\n"); ++ return 0; ++} ++ ++/* toggles mute on or off depending on the value of nmute, and returns ++ * 1 if the mute value was changed, otherwise 0 ++ */ ++static int toggle_mute(struct bcm2835_chip *chip, int nmute) ++{ ++ /* if settings are ok, just return 0 */ ++ if(chip->mute == nmute) ++ return 0; ++ ++ /* if the sound is muted then we need to unmute */ ++ if(chip->mute == CTRL_VOL_MUTE) ++ { ++ chip->volume = chip->old_volume; /* copy the old volume back */ ++ audio_info("Unmuting, old_volume = %d, volume = %d ...\n", chip->old_volume, chip->volume); ++ } ++ else /* otherwise we mute */ ++ { ++ chip->old_volume = chip->volume; ++ chip->volume = 26214; /* set volume to minimum level AKA mute */ ++ audio_info("Muting, old_volume = %d, volume = %d ...\n", chip->old_volume, chip->volume); ++ } ++ ++ chip->mute = nmute; ++ return 1; ++} ++ ++static int snd_bcm2835_ctl_get(struct snd_kcontrol *kcontrol, ++ struct snd_ctl_elem_value *ucontrol) ++{ ++ struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol); ++ ++ BUG_ON(!chip && !(chip->avail_substreams & AVAIL_SUBSTREAMS_MASK)); ++ ++ if (kcontrol->private_value == PCM_PLAYBACK_VOLUME) ++ ucontrol->value.integer.value[0] = chip2alsa(chip->volume); ++ else if (kcontrol->private_value == PCM_PLAYBACK_MUTE) ++ ucontrol->value.integer.value[0] = chip->mute; ++ else if (kcontrol->private_value == PCM_PLAYBACK_DEVICE) ++ ucontrol->value.integer.value[0] = chip->dest; ++ ++ return 0; ++} ++ ++static int snd_bcm2835_ctl_put(struct snd_kcontrol *kcontrol, ++ struct snd_ctl_elem_value *ucontrol) ++{ ++ struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol); ++ int changed = 0; ++ ++ if (kcontrol->private_value == PCM_PLAYBACK_VOLUME) { ++ audio_info("Volume change attempted.. volume = %d new_volume = %d\n", chip->volume, (int)ucontrol->value.integer.value[0]); ++ if (chip->mute == CTRL_VOL_MUTE) { ++ /* changed = toggle_mute(chip, CTRL_VOL_UNMUTE); */ ++ return 1; /* should return 0 to signify no change but the mixer takes this as the opposite sign (no idea why) */ ++ } ++ if (changed ++ || (ucontrol->value.integer.value[0] != chip2alsa(chip->volume))) { ++ ++ chip->volume = alsa2chip(ucontrol->value.integer.value[0]); ++ changed = 1; ++ } ++ ++ } else if (kcontrol->private_value == PCM_PLAYBACK_MUTE) { ++ /* Now implemented */ ++ audio_info(" Mute attempted\n"); ++ changed = toggle_mute(chip, ucontrol->value.integer.value[0]); ++ ++ } else if (kcontrol->private_value == PCM_PLAYBACK_DEVICE) { ++ if (ucontrol->value.integer.value[0] != chip->dest) { ++ chip->dest = ucontrol->value.integer.value[0]; ++ changed = 1; ++ } ++ } ++ ++ if (changed) { ++ if (bcm2835_audio_set_ctls(chip)) ++ printk(KERN_ERR "Failed to set ALSA controls..\n"); ++ } ++ ++ return changed; ++} ++ ++static DECLARE_TLV_DB_SCALE(snd_bcm2835_db_scale, CTRL_VOL_MIN, 1, 1); ++ ++static struct snd_kcontrol_new snd_bcm2835_ctl[] = { ++ { ++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, ++ .name = "PCM Playback Volume", ++ .index = 0, ++ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, ++ .private_value = PCM_PLAYBACK_VOLUME, ++ .info = snd_bcm2835_ctl_info, ++ .get = snd_bcm2835_ctl_get, ++ .put = snd_bcm2835_ctl_put, ++ .count = 1, ++ .tlv = {.p = snd_bcm2835_db_scale} ++ }, ++ { ++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, ++ .name = "PCM Playback Switch", ++ .index = 0, ++ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, ++ .private_value = PCM_PLAYBACK_MUTE, ++ .info = snd_bcm2835_ctl_info, ++ .get = snd_bcm2835_ctl_get, ++ .put = snd_bcm2835_ctl_put, ++ .count = 1, ++ }, ++ { ++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, ++ .name = "PCM Playback Route", ++ .index = 0, ++ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, ++ .private_value = PCM_PLAYBACK_DEVICE, ++ .info = snd_bcm2835_ctl_info, ++ .get = snd_bcm2835_ctl_get, ++ .put = snd_bcm2835_ctl_put, ++ .count = 1, ++ }, ++}; ++ ++static int snd_bcm2835_spdif_default_info(struct snd_kcontrol *kcontrol, ++ struct snd_ctl_elem_info *uinfo) ++{ ++ uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; ++ uinfo->count = 1; ++ return 0; ++} ++ ++static int snd_bcm2835_spdif_default_get(struct snd_kcontrol *kcontrol, ++ struct snd_ctl_elem_value *ucontrol) ++{ ++ struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol); ++ int i; ++ ++ for (i = 0; i < 4; i++) ++ ucontrol->value.iec958.status[i] = ++ (chip->spdif_status >> (i * 8)) && 0xff; ++ ++ return 0; ++} ++ ++static int snd_bcm2835_spdif_default_put(struct snd_kcontrol *kcontrol, ++ struct snd_ctl_elem_value *ucontrol) ++{ ++ struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol); ++ unsigned int val = 0; ++ int i, change; ++ ++ for (i = 0; i < 4; i++) ++ val |= (unsigned int)ucontrol->value.iec958.status[i] << (i * 8); ++ ++ change = val != chip->spdif_status; ++ chip->spdif_status = val; ++ ++ return change; ++} ++ ++static int snd_bcm2835_spdif_mask_info(struct snd_kcontrol *kcontrol, ++ struct snd_ctl_elem_info *uinfo) ++{ ++ uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; ++ uinfo->count = 1; ++ return 0; ++} ++ ++static int snd_bcm2835_spdif_mask_get(struct snd_kcontrol *kcontrol, ++ struct snd_ctl_elem_value *ucontrol) ++{ ++ /* bcm2835 supports only consumer mode and sets all other format flags ++ * automatically. So the only thing left is signalling non-audio ++ * content */ ++ ucontrol->value.iec958.status[0] = IEC958_AES0_NONAUDIO; ++ return 0; ++} ++ ++static int snd_bcm2835_spdif_stream_info(struct snd_kcontrol *kcontrol, ++ struct snd_ctl_elem_info *uinfo) ++{ ++ uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; ++ uinfo->count = 1; ++ return 0; ++} ++ ++static int snd_bcm2835_spdif_stream_get(struct snd_kcontrol *kcontrol, ++ struct snd_ctl_elem_value *ucontrol) ++{ ++ struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol); ++ int i; ++ ++ for (i = 0; i < 4; i++) ++ ucontrol->value.iec958.status[i] = ++ (chip->spdif_status >> (i * 8)) & 0xff; ++ return 0; ++} ++ ++static int snd_bcm2835_spdif_stream_put(struct snd_kcontrol *kcontrol, ++ struct snd_ctl_elem_value *ucontrol) ++{ ++ struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol); ++ unsigned int val = 0; ++ int i, change; ++ ++ for (i = 0; i < 4; i++) ++ val |= (unsigned int)ucontrol->value.iec958.status[i] << (i * 8); ++ change = val != chip->spdif_status; ++ chip->spdif_status = val; ++ ++ return change; ++} ++ ++static struct snd_kcontrol_new snd_bcm2835_spdif[] = { ++ { ++ .iface = SNDRV_CTL_ELEM_IFACE_PCM, ++ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), ++ .info = snd_bcm2835_spdif_default_info, ++ .get = snd_bcm2835_spdif_default_get, ++ .put = snd_bcm2835_spdif_default_put ++ }, ++ { ++ .access = SNDRV_CTL_ELEM_ACCESS_READ, ++ .iface = SNDRV_CTL_ELEM_IFACE_PCM, ++ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK), ++ .info = snd_bcm2835_spdif_mask_info, ++ .get = snd_bcm2835_spdif_mask_get, ++ }, ++ { ++ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | ++ SNDRV_CTL_ELEM_ACCESS_INACTIVE, ++ .iface = SNDRV_CTL_ELEM_IFACE_PCM, ++ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PCM_STREAM), ++ .info = snd_bcm2835_spdif_stream_info, ++ .get = snd_bcm2835_spdif_stream_get, ++ .put = snd_bcm2835_spdif_stream_put, ++ }, ++}; ++ ++int snd_bcm2835_new_ctl(bcm2835_chip_t * chip) ++{ ++ int err; ++ unsigned int idx; ++ ++ strcpy(chip->card->mixername, "Broadcom Mixer"); ++ for (idx = 0; idx < ARRAY_SIZE(snd_bcm2835_ctl); idx++) { ++ err = ++ snd_ctl_add(chip->card, ++ snd_ctl_new1(&snd_bcm2835_ctl[idx], chip)); ++ if (err < 0) ++ return err; ++ } ++ for (idx = 0; idx < ARRAY_SIZE(snd_bcm2835_spdif); idx++) { ++ err = snd_ctl_add(chip->card, ++ snd_ctl_new1(&snd_bcm2835_spdif[idx], chip)); ++ if (err < 0) ++ return err; ++ } ++ return 0; ++} +--- /dev/null ++++ b/sound/arm/bcm2835-pcm.c +@@ -0,0 +1,557 @@ ++/***************************************************************************** ++* Copyright 2011 Broadcom Corporation. All rights reserved. ++* ++* Unless you and Broadcom execute a separate written software license ++* agreement governing use of this software, this software is licensed to you ++* under the terms of the GNU General Public License version 2, available at ++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). ++* ++* Notwithstanding the above, under no circumstances may you combine this ++* software in any way with any other Broadcom software provided under a ++* license other than the GPL, without Broadcom's express prior written ++* consent. ++*****************************************************************************/ ++ ++#include <linux/interrupt.h> ++#include <linux/slab.h> ++ ++#include <sound/asoundef.h> ++ ++#include "bcm2835.h" ++ ++/* hardware definition */ ++static struct snd_pcm_hardware snd_bcm2835_playback_hw = { ++ .info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | ++ SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID), ++ .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, ++ .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, ++ .rate_min = 8000, ++ .rate_max = 48000, ++ .channels_min = 1, ++ .channels_max = 2, ++ .buffer_bytes_max = 128 * 1024, ++ .period_bytes_min = 1 * 1024, ++ .period_bytes_max = 128 * 1024, ++ .periods_min = 1, ++ .periods_max = 128, ++}; ++ ++static struct snd_pcm_hardware snd_bcm2835_playback_spdif_hw = { ++ .info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | ++ SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID), ++ .formats = SNDRV_PCM_FMTBIT_S16_LE, ++ .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_44100 | ++ SNDRV_PCM_RATE_48000, ++ .rate_min = 44100, ++ .rate_max = 48000, ++ .channels_min = 2, ++ .channels_max = 2, ++ .buffer_bytes_max = 128 * 1024, ++ .period_bytes_min = 1 * 1024, ++ .period_bytes_max = 128 * 1024, ++ .periods_min = 1, ++ .periods_max = 128, ++}; ++ ++static void snd_bcm2835_playback_free(struct snd_pcm_runtime *runtime) ++{ ++ audio_info("Freeing up alsa stream here ..\n"); ++ if (runtime->private_data) ++ kfree(runtime->private_data); ++ runtime->private_data = NULL; ++} ++ ++static irqreturn_t bcm2835_playback_fifo_irq(int irq, void *dev_id) ++{ ++ bcm2835_alsa_stream_t *alsa_stream = (bcm2835_alsa_stream_t *) dev_id; ++ uint32_t consumed = 0; ++ int new_period = 0; ++ ++ audio_info(" .. IN\n"); ++ ++ audio_info("alsa_stream=%p substream=%p\n", alsa_stream, ++ alsa_stream ? alsa_stream->substream : 0); ++ ++ if (alsa_stream->open) ++ consumed = bcm2835_audio_retrieve_buffers(alsa_stream); ++ ++ /* We get called only if playback was triggered, So, the number of buffers we retrieve in ++ * each iteration are the buffers that have been played out already ++ */ ++ ++ if (alsa_stream->period_size) { ++ if ((alsa_stream->pos / alsa_stream->period_size) != ++ ((alsa_stream->pos + consumed) / alsa_stream->period_size)) ++ new_period = 1; ++ } ++ audio_debug("updating pos cur: %d + %d max:%d period_bytes:%d, hw_ptr: %d new_period:%d\n", ++ alsa_stream->pos, ++ consumed, ++ alsa_stream->buffer_size, ++ (int)(alsa_stream->period_size*alsa_stream->substream->runtime->periods), ++ frames_to_bytes(alsa_stream->substream->runtime, alsa_stream->substream->runtime->status->hw_ptr), ++ new_period); ++ if (alsa_stream->buffer_size) { ++ alsa_stream->pos += consumed &~ (1<<30); ++ alsa_stream->pos %= alsa_stream->buffer_size; ++ } ++ ++ if (alsa_stream->substream) { ++ if (new_period) ++ snd_pcm_period_elapsed(alsa_stream->substream); ++ } else { ++ audio_warning(" unexpected NULL substream\n"); ++ } ++ audio_info(" .. OUT\n"); ++ ++ return IRQ_HANDLED; ++} ++ ++/* open callback */ ++static int snd_bcm2835_playback_open_generic( ++ struct snd_pcm_substream *substream, int spdif) ++{ ++ bcm2835_chip_t *chip = snd_pcm_substream_chip(substream); ++ struct snd_pcm_runtime *runtime = substream->runtime; ++ bcm2835_alsa_stream_t *alsa_stream; ++ int idx; ++ int err; ++ ++ audio_info(" .. IN (%d)\n", substream->number); ++ ++ if(mutex_lock_interruptible(&chip->audio_mutex)) ++ { ++ audio_error("Interrupted whilst waiting for lock\n"); ++ return -EINTR; ++ } ++ audio_info("Alsa open (%d)\n", substream->number); ++ idx = substream->number; ++ ++ if (spdif && chip->opened != 0) { ++ err = -EBUSY; ++ goto out; ++ } ++ else if (!spdif && (chip->opened & (1 << idx))) { ++ err = -EBUSY; ++ goto out; ++ } ++ if (idx > MAX_SUBSTREAMS) { ++ audio_error ++ ("substream(%d) device doesn't exist max(%d) substreams allowed\n", ++ idx, MAX_SUBSTREAMS); ++ err = -ENODEV; ++ goto out; ++ } ++ ++ /* Check if we are ready */ ++ if (!(chip->avail_substreams & (1 << idx))) { ++ /* We are not ready yet */ ++ audio_error("substream(%d) device is not ready yet\n", idx); ++ err = -EAGAIN; ++ goto out; ++ } ++ ++ alsa_stream = kzalloc(sizeof(bcm2835_alsa_stream_t), GFP_KERNEL); ++ if (alsa_stream == NULL) { ++ err = -ENOMEM; ++ goto out; ++ } ++ ++ /* Initialise alsa_stream */ ++ alsa_stream->chip = chip; ++ alsa_stream->substream = substream; ++ alsa_stream->idx = idx; ++ ++ sema_init(&alsa_stream->buffers_update_sem, 0); ++ sema_init(&alsa_stream->control_sem, 0); ++ spin_lock_init(&alsa_stream->lock); ++ ++ /* Enabled in start trigger, called on each "fifo irq" after that */ ++ alsa_stream->enable_fifo_irq = 0; ++ alsa_stream->fifo_irq_handler = bcm2835_playback_fifo_irq; ++ ++ err = bcm2835_audio_open(alsa_stream); ++ if (err != 0) { ++ kfree(alsa_stream); ++ goto out; ++ } ++ runtime->private_data = alsa_stream; ++ runtime->private_free = snd_bcm2835_playback_free; ++ if (spdif) { ++ runtime->hw = snd_bcm2835_playback_spdif_hw; ++ } else { ++ /* clear spdif status, as we are not in spdif mode */ ++ chip->spdif_status = 0; ++ runtime->hw = snd_bcm2835_playback_hw; ++ } ++ /* minimum 16 bytes alignment (for vchiq bulk transfers) */ ++ snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, ++ 16); ++ ++ chip->alsa_stream[idx] = alsa_stream; ++ ++ chip->opened |= (1 << idx); ++ alsa_stream->open = 1; ++ alsa_stream->draining = 1; ++ ++out: ++ mutex_unlock(&chip->audio_mutex); ++ ++ audio_info(" .. OUT =%d\n", err); ++ ++ return err; ++} ++ ++static int snd_bcm2835_playback_open(struct snd_pcm_substream *substream) ++{ ++ return snd_bcm2835_playback_open_generic(substream, 0); ++} ++ ++static int snd_bcm2835_playback_spdif_open(struct snd_pcm_substream *substream) ++{ ++ return snd_bcm2835_playback_open_generic(substream, 1); ++} ++ ++/* close callback */ ++static int snd_bcm2835_playback_close(struct snd_pcm_substream *substream) ++{ ++ /* the hardware-specific codes will be here */ ++ ++ bcm2835_chip_t *chip; ++ struct snd_pcm_runtime *runtime; ++ bcm2835_alsa_stream_t *alsa_stream; ++ ++ audio_info(" .. IN\n"); ++ ++ chip = snd_pcm_substream_chip(substream); ++ if(mutex_lock_interruptible(&chip->audio_mutex)) ++ { ++ audio_error("Interrupted whilst waiting for lock\n"); ++ return -EINTR; ++ } ++ runtime = substream->runtime; ++ alsa_stream = runtime->private_data; ++ ++ audio_info("Alsa close\n"); ++ ++ /* ++ * Call stop if it's still running. This happens when app ++ * is force killed and we don't get a stop trigger. ++ */ ++ if (alsa_stream->running) { ++ int err; ++ err = bcm2835_audio_stop(alsa_stream); ++ alsa_stream->running = 0; ++ if (err != 0) ++ audio_error(" Failed to STOP alsa device\n"); ++ } ++ ++ alsa_stream->period_size = 0; ++ alsa_stream->buffer_size = 0; ++ ++ if (alsa_stream->open) { ++ alsa_stream->open = 0; ++ bcm2835_audio_close(alsa_stream); ++ } ++ if (alsa_stream->chip) ++ alsa_stream->chip->alsa_stream[alsa_stream->idx] = NULL; ++ /* ++ * Do not free up alsa_stream here, it will be freed up by ++ * runtime->private_free callback we registered in *_open above ++ */ ++ ++ chip->opened &= ~(1 << substream->number); ++ ++ mutex_unlock(&chip->audio_mutex); ++ audio_info(" .. OUT\n"); ++ ++ return 0; ++} ++ ++/* hw_params callback */ ++static int snd_bcm2835_pcm_hw_params(struct snd_pcm_substream *substream, ++ struct snd_pcm_hw_params *params) ++{ ++ struct snd_pcm_runtime *runtime = substream->runtime; ++ bcm2835_alsa_stream_t *alsa_stream = runtime->private_data; ++ int err; ++ ++ audio_info(" .. IN\n"); ++ ++ err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); ++ if (err < 0) { ++ audio_error ++ (" pcm_lib_malloc failed to allocated pages for buffers\n"); ++ return err; ++ } ++ ++ alsa_stream->channels = params_channels(params); ++ alsa_stream->params_rate = params_rate(params); ++ alsa_stream->pcm_format_width = snd_pcm_format_width(params_format (params)); ++ audio_info(" .. OUT\n"); ++ ++ return err; ++} ++ ++/* hw_free callback */ ++static int snd_bcm2835_pcm_hw_free(struct snd_pcm_substream *substream) ++{ ++ audio_info(" .. IN\n"); ++ return snd_pcm_lib_free_pages(substream); ++} ++ ++/* prepare callback */ ++static int snd_bcm2835_pcm_prepare(struct snd_pcm_substream *substream) ++{ ++ bcm2835_chip_t *chip = snd_pcm_substream_chip(substream); ++ struct snd_pcm_runtime *runtime = substream->runtime; ++ bcm2835_alsa_stream_t *alsa_stream = runtime->private_data; ++ int channels; ++ int err; ++ ++ audio_info(" .. IN\n"); ++ ++ /* notify the vchiq that it should enter spdif passthrough mode by ++ * setting channels=0 (see ++ * https://github.com/raspberrypi/linux/issues/528) */ ++ if (chip->spdif_status & IEC958_AES0_NONAUDIO) ++ channels = 0; ++ else ++ channels = alsa_stream->channels; ++ ++ err = bcm2835_audio_set_params(alsa_stream, channels, ++ alsa_stream->params_rate, ++ alsa_stream->pcm_format_width); ++ if (err < 0) { ++ audio_error(" error setting hw params\n"); ++ } ++ ++ bcm2835_audio_setup(alsa_stream); ++ ++ /* in preparation of the stream, set the controls (volume level) of the stream */ ++ bcm2835_audio_set_ctls(alsa_stream->chip); ++ ++ ++ memset(&alsa_stream->pcm_indirect, 0, sizeof(alsa_stream->pcm_indirect)); ++ ++ alsa_stream->pcm_indirect.hw_buffer_size = ++ alsa_stream->pcm_indirect.sw_buffer_size = ++ snd_pcm_lib_buffer_bytes(substream); ++ ++ alsa_stream->buffer_size = snd_pcm_lib_buffer_bytes(substream); ++ alsa_stream->period_size = snd_pcm_lib_period_bytes(substream); ++ alsa_stream->pos = 0; ++ ++ audio_debug("buffer_size=%d, period_size=%d pos=%d frame_bits=%d\n", ++ alsa_stream->buffer_size, alsa_stream->period_size, ++ alsa_stream->pos, runtime->frame_bits); ++ ++ audio_info(" .. OUT\n"); ++ return 0; ++} ++ ++static void snd_bcm2835_pcm_transfer(struct snd_pcm_substream *substream, ++ struct snd_pcm_indirect *rec, size_t bytes) ++{ ++ struct snd_pcm_runtime *runtime = substream->runtime; ++ bcm2835_alsa_stream_t *alsa_stream = runtime->private_data; ++ void *src = (void *)(substream->runtime->dma_area + rec->sw_data); ++ int err; ++ ++ err = bcm2835_audio_write(alsa_stream, bytes, src); ++ if (err) ++ audio_error(" Failed to transfer to alsa device (%d)\n", err); ++ ++} ++ ++static int snd_bcm2835_pcm_ack(struct snd_pcm_substream *substream) ++{ ++ struct snd_pcm_runtime *runtime = substream->runtime; ++ bcm2835_alsa_stream_t *alsa_stream = runtime->private_data; ++ struct snd_pcm_indirect *pcm_indirect = &alsa_stream->pcm_indirect; ++ ++ pcm_indirect->hw_queue_size = runtime->hw.buffer_bytes_max; ++ snd_pcm_indirect_playback_transfer(substream, pcm_indirect, ++ snd_bcm2835_pcm_transfer); ++ return 0; ++} ++ ++/* trigger callback */ ++static int snd_bcm2835_pcm_trigger(struct snd_pcm_substream *substream, int cmd) ++{ ++ struct snd_pcm_runtime *runtime = substream->runtime; ++ bcm2835_alsa_stream_t *alsa_stream = runtime->private_data; ++ int err = 0; ++ ++ audio_info(" .. IN\n"); ++ ++ switch (cmd) { ++ case SNDRV_PCM_TRIGGER_START: ++ audio_debug("bcm2835_AUDIO_TRIGGER_START running=%d\n", ++ alsa_stream->running); ++ if (!alsa_stream->running) { ++ err = bcm2835_audio_start(alsa_stream); ++ if (err == 0) { ++ alsa_stream->pcm_indirect.hw_io = ++ alsa_stream->pcm_indirect.hw_data = ++ bytes_to_frames(runtime, ++ alsa_stream->pos); ++ substream->ops->ack(substream); ++ alsa_stream->running = 1; ++ alsa_stream->draining = 1; ++ } else { ++ audio_error(" Failed to START alsa device (%d)\n", err); ++ } ++ } ++ break; ++ case SNDRV_PCM_TRIGGER_STOP: ++ audio_debug ++ ("bcm2835_AUDIO_TRIGGER_STOP running=%d draining=%d\n", ++ alsa_stream->running, runtime->status->state == SNDRV_PCM_STATE_DRAINING); ++ if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { ++ audio_info("DRAINING\n"); ++ alsa_stream->draining = 1; ++ } else { ++ audio_info("DROPPING\n"); ++ alsa_stream->draining = 0; ++ } ++ if (alsa_stream->running) { ++ err = bcm2835_audio_stop(alsa_stream); ++ if (err != 0) ++ audio_error(" Failed to STOP alsa device (%d)\n", err); ++ alsa_stream->running = 0; ++ } ++ break; ++ default: ++ err = -EINVAL; ++ } ++ ++ audio_info(" .. OUT\n"); ++ return err; ++} ++ ++/* pointer callback */ ++static snd_pcm_uframes_t ++snd_bcm2835_pcm_pointer(struct snd_pcm_substream *substream) ++{ ++ struct snd_pcm_runtime *runtime = substream->runtime; ++ bcm2835_alsa_stream_t *alsa_stream = runtime->private_data; ++ ++ audio_info(" .. IN\n"); ++ ++ audio_debug("pcm_pointer... (%d) hwptr=%d appl=%d pos=%d\n", 0, ++ frames_to_bytes(runtime, runtime->status->hw_ptr), ++ frames_to_bytes(runtime, runtime->control->appl_ptr), ++ alsa_stream->pos); ++ ++ audio_info(" .. OUT\n"); ++ return snd_pcm_indirect_playback_pointer(substream, ++ &alsa_stream->pcm_indirect, ++ alsa_stream->pos); ++} ++ ++static int snd_bcm2835_pcm_lib_ioctl(struct snd_pcm_substream *substream, ++ unsigned int cmd, void *arg) ++{ ++ int ret = snd_pcm_lib_ioctl(substream, cmd, arg); ++ audio_info(" .. substream=%p, cmd=%d, arg=%p (%x) ret=%d\n", substream, ++ cmd, arg, arg ? *(unsigned *)arg : 0, ret); ++ return ret; ++} ++ ++/* operators */ ++static struct snd_pcm_ops snd_bcm2835_playback_ops = { ++ .open = snd_bcm2835_playback_open, ++ .close = snd_bcm2835_playback_close, ++ .ioctl = snd_bcm2835_pcm_lib_ioctl, ++ .hw_params = snd_bcm2835_pcm_hw_params, ++ .hw_free = snd_bcm2835_pcm_hw_free, ++ .prepare = snd_bcm2835_pcm_prepare, ++ .trigger = snd_bcm2835_pcm_trigger, ++ .pointer = snd_bcm2835_pcm_pointer, ++ .ack = snd_bcm2835_pcm_ack, ++}; ++ ++static struct snd_pcm_ops snd_bcm2835_playback_spdif_ops = { ++ .open = snd_bcm2835_playback_spdif_open, ++ .close = snd_bcm2835_playback_close, ++ .ioctl = snd_bcm2835_pcm_lib_ioctl, ++ .hw_params = snd_bcm2835_pcm_hw_params, ++ .hw_free = snd_bcm2835_pcm_hw_free, ++ .prepare = snd_bcm2835_pcm_prepare, ++ .trigger = snd_bcm2835_pcm_trigger, ++ .pointer = snd_bcm2835_pcm_pointer, ++ .ack = snd_bcm2835_pcm_ack, ++}; ++ ++/* create a pcm device */ ++int snd_bcm2835_new_pcm(bcm2835_chip_t * chip) ++{ ++ struct snd_pcm *pcm; ++ int err; ++ ++ audio_info(" .. IN\n"); ++ mutex_init(&chip->audio_mutex); ++ if(mutex_lock_interruptible(&chip->audio_mutex)) ++ { ++ audio_error("Interrupted whilst waiting for lock\n"); ++ return -EINTR; ++ } ++ err = ++ snd_pcm_new(chip->card, "bcm2835 ALSA", 0, MAX_SUBSTREAMS, 0, &pcm); ++ if (err < 0) ++ goto out; ++ pcm->private_data = chip; ++ strcpy(pcm->name, "bcm2835 ALSA"); ++ chip->pcm = pcm; ++ chip->dest = AUDIO_DEST_AUTO; ++ chip->volume = alsa2chip(0); ++ chip->mute = CTRL_VOL_UNMUTE; /*disable mute on startup */ ++ /* set operators */ ++ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, ++ &snd_bcm2835_playback_ops); ++ ++ /* pre-allocation of buffers */ ++ /* NOTE: this may fail */ ++ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, ++ snd_dma_continuous_data ++ (GFP_KERNEL), 64 * 1024, ++ 64 * 1024); ++ ++out: ++ mutex_unlock(&chip->audio_mutex); ++ audio_info(" .. OUT\n"); ++ ++ return 0; ++} ++ ++int snd_bcm2835_new_spdif_pcm(bcm2835_chip_t * chip) ++{ ++ struct snd_pcm *pcm; ++ int err; ++ ++ audio_info(" .. IN\n"); ++ if(mutex_lock_interruptible(&chip->audio_mutex)) ++ { ++ audio_error("Interrupted whilst waiting for lock\n"); ++ return -EINTR; ++ } ++ err = snd_pcm_new(chip->card, "bcm2835 ALSA", 1, 1, 0, &pcm); ++ if (err < 0) ++ goto out; ++ ++ pcm->private_data = chip; ++ strcpy(pcm->name, "bcm2835 IEC958/HDMI"); ++ chip->pcm_spdif = pcm; ++ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, ++ &snd_bcm2835_playback_spdif_ops); ++ ++ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, ++ snd_dma_continuous_data (GFP_KERNEL), ++ 64 * 1024, 64 * 1024); ++out: ++ mutex_unlock(&chip->audio_mutex); ++ audio_info(" .. OUT\n"); ++ ++ return 0; ++} +--- /dev/null ++++ b/sound/arm/bcm2835-vchiq.c +@@ -0,0 +1,902 @@ ++/***************************************************************************** ++* Copyright 2011 Broadcom Corporation. All rights reserved. ++* ++* Unless you and Broadcom execute a separate written software license ++* agreement governing use of this software, this software is licensed to you ++* under the terms of the GNU General Public License version 2, available at ++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). ++* ++* Notwithstanding the above, under no circumstances may you combine this ++* software in any way with any other Broadcom software provided under a ++* license other than the GPL, without Broadcom's express prior written ++* consent. ++*****************************************************************************/ ++ ++#include <linux/device.h> ++#include <sound/core.h> ++#include <sound/initval.h> ++#include <sound/pcm.h> ++#include <linux/io.h> ++#include <linux/interrupt.h> ++#include <linux/fs.h> ++#include <linux/file.h> ++#include <linux/mm.h> ++#include <linux/syscalls.h> ++#include <asm/uaccess.h> ++#include <linux/slab.h> ++#include <linux/delay.h> ++#include <linux/atomic.h> ++#include <linux/module.h> ++#include <linux/completion.h> ++ ++#include "bcm2835.h" ++ ++/* ---- Include Files -------------------------------------------------------- */ ++ ++#include "interface/vchi/vchi.h" ++#include "vc_vchi_audioserv_defs.h" ++ ++/* ---- Private Constants and Types ------------------------------------------ */ ++ ++#define BCM2835_AUDIO_STOP 0 ++#define BCM2835_AUDIO_START 1 ++#define BCM2835_AUDIO_WRITE 2 ++ ++/* Logging macros (for remapping to other logging mechanisms, i.e., printf) */ ++#ifdef AUDIO_DEBUG_ENABLE ++ #define LOG_ERR( fmt, arg... ) pr_err( "%s:%d " fmt, __func__, __LINE__, ##arg) ++ #define LOG_WARN( fmt, arg... ) pr_info( "%s:%d " fmt, __func__, __LINE__, ##arg) ++ #define LOG_INFO( fmt, arg... ) pr_info( "%s:%d " fmt, __func__, __LINE__, ##arg) ++ #define LOG_DBG( fmt, arg... ) pr_info( "%s:%d " fmt, __func__, __LINE__, ##arg) ++#else ++ #define LOG_ERR( fmt, arg... ) pr_err( "%s:%d " fmt, __func__, __LINE__, ##arg) ++ #define LOG_WARN( fmt, arg... ) ++ #define LOG_INFO( fmt, arg... ) ++ #define LOG_DBG( fmt, arg... ) ++#endif ++ ++typedef struct opaque_AUDIO_INSTANCE_T { ++ uint32_t num_connections; ++ VCHI_SERVICE_HANDLE_T vchi_handle[VCHI_MAX_NUM_CONNECTIONS]; ++ struct completion msg_avail_comp; ++ struct mutex vchi_mutex; ++ bcm2835_alsa_stream_t *alsa_stream; ++ int32_t result; ++ short peer_version; ++} AUDIO_INSTANCE_T; ++ ++bool force_bulk = false; ++ ++/* ---- Private Variables ---------------------------------------------------- */ ++ ++/* ---- Private Function Prototypes ------------------------------------------ */ ++ ++/* ---- Private Functions ---------------------------------------------------- */ ++ ++static int bcm2835_audio_stop_worker(bcm2835_alsa_stream_t * alsa_stream); ++static int bcm2835_audio_start_worker(bcm2835_alsa_stream_t * alsa_stream); ++static int bcm2835_audio_write_worker(bcm2835_alsa_stream_t *alsa_stream, ++ uint32_t count, void *src); ++ ++typedef struct { ++ struct work_struct my_work; ++ bcm2835_alsa_stream_t *alsa_stream; ++ int cmd; ++ void *src; ++ uint32_t count; ++} my_work_t; ++ ++static void my_wq_function(struct work_struct *work) ++{ ++ my_work_t *w = (my_work_t *) work; ++ int ret = -9; ++ LOG_DBG(" .. IN %p:%d\n", w->alsa_stream, w->cmd); ++ switch (w->cmd) { ++ case BCM2835_AUDIO_START: ++ ret = bcm2835_audio_start_worker(w->alsa_stream); ++ break; ++ case BCM2835_AUDIO_STOP: ++ ret = bcm2835_audio_stop_worker(w->alsa_stream); ++ break; ++ case BCM2835_AUDIO_WRITE: ++ ret = bcm2835_audio_write_worker(w->alsa_stream, w->count, ++ w->src); ++ break; ++ default: ++ LOG_ERR(" Unexpected work: %p:%d\n", w->alsa_stream, w->cmd); ++ break; ++ } ++ kfree((void *)work); ++ LOG_DBG(" .. OUT %d\n", ret); ++} ++ ++int bcm2835_audio_start(bcm2835_alsa_stream_t * alsa_stream) ++{ ++ int ret = -1; ++ LOG_DBG(" .. IN\n"); ++ if (alsa_stream->my_wq) { ++ my_work_t *work = kmalloc(sizeof(my_work_t), GFP_ATOMIC); ++ /*--- Queue some work (item 1) ---*/ ++ if (work) { ++ INIT_WORK((struct work_struct *)work, my_wq_function); ++ work->alsa_stream = alsa_stream; ++ work->cmd = BCM2835_AUDIO_START; ++ if (queue_work ++ (alsa_stream->my_wq, (struct work_struct *)work)) ++ ret = 0; ++ } else ++ LOG_ERR(" .. Error: NULL work kmalloc\n"); ++ } ++ LOG_DBG(" .. OUT %d\n", ret); ++ return ret; ++} ++ ++int bcm2835_audio_stop(bcm2835_alsa_stream_t * alsa_stream) ++{ ++ int ret = -1; ++ LOG_DBG(" .. IN\n"); ++ if (alsa_stream->my_wq) { ++ my_work_t *work = kmalloc(sizeof(my_work_t), GFP_ATOMIC); ++ /*--- Queue some work (item 1) ---*/ ++ if (work) { ++ INIT_WORK((struct work_struct *)work, my_wq_function); ++ work->alsa_stream = alsa_stream; ++ work->cmd = BCM2835_AUDIO_STOP; ++ if (queue_work ++ (alsa_stream->my_wq, (struct work_struct *)work)) ++ ret = 0; ++ } else ++ LOG_ERR(" .. Error: NULL work kmalloc\n"); ++ } ++ LOG_DBG(" .. OUT %d\n", ret); ++ return ret; ++} ++ ++int bcm2835_audio_write(bcm2835_alsa_stream_t *alsa_stream, ++ uint32_t count, void *src) ++{ ++ int ret = -1; ++ LOG_DBG(" .. IN\n"); ++ if (alsa_stream->my_wq) { ++ my_work_t *work = kmalloc(sizeof(my_work_t), GFP_ATOMIC); ++ /*--- Queue some work (item 1) ---*/ ++ if (work) { ++ INIT_WORK((struct work_struct *)work, my_wq_function); ++ work->alsa_stream = alsa_stream; ++ work->cmd = BCM2835_AUDIO_WRITE; ++ work->src = src; ++ work->count = count; ++ if (queue_work ++ (alsa_stream->my_wq, (struct work_struct *)work)) ++ ret = 0; ++ } else ++ LOG_ERR(" .. Error: NULL work kmalloc\n"); ++ } ++ LOG_DBG(" .. OUT %d\n", ret); ++ return ret; ++} ++ ++void my_workqueue_init(bcm2835_alsa_stream_t * alsa_stream) ++{ ++ alsa_stream->my_wq = alloc_workqueue("my_queue", WQ_HIGHPRI, 1); ++ return; ++} ++ ++void my_workqueue_quit(bcm2835_alsa_stream_t * alsa_stream) ++{ ++ if (alsa_stream->my_wq) { ++ flush_workqueue(alsa_stream->my_wq); ++ destroy_workqueue(alsa_stream->my_wq); ++ alsa_stream->my_wq = NULL; ++ } ++ return; ++} ++ ++static void audio_vchi_callback(void *param, ++ const VCHI_CALLBACK_REASON_T reason, ++ void *msg_handle) ++{ ++ AUDIO_INSTANCE_T *instance = (AUDIO_INSTANCE_T *) param; ++ int32_t status; ++ int32_t msg_len; ++ VC_AUDIO_MSG_T m; ++ LOG_DBG(" .. IN instance=%p, handle=%p, alsa=%p, reason=%d, handle=%p\n", ++ instance, instance ? instance->vchi_handle[0] : NULL, instance ? instance->alsa_stream : NULL, reason, msg_handle); ++ ++ if (reason != VCHI_CALLBACK_MSG_AVAILABLE) { ++ return; ++ } ++ if (!instance) { ++ LOG_ERR(" .. instance is null\n"); ++ BUG(); ++ return; ++ } ++ if (!instance->vchi_handle[0]) { ++ LOG_ERR(" .. instance->vchi_handle[0] is null\n"); ++ BUG(); ++ return; ++ } ++ status = vchi_msg_dequeue(instance->vchi_handle[0], ++ &m, sizeof m, &msg_len, VCHI_FLAGS_NONE); ++ if (m.type == VC_AUDIO_MSG_TYPE_RESULT) { ++ LOG_DBG ++ (" .. instance=%p, m.type=VC_AUDIO_MSG_TYPE_RESULT, success=%d\n", ++ instance, m.u.result.success); ++ instance->result = m.u.result.success; ++ complete(&instance->msg_avail_comp); ++ } else if (m.type == VC_AUDIO_MSG_TYPE_COMPLETE) { ++ bcm2835_alsa_stream_t *alsa_stream = instance->alsa_stream; ++ irq_handler_t callback = (irq_handler_t) m.u.complete.callback; ++ LOG_DBG ++ (" .. instance=%p, m.type=VC_AUDIO_MSG_TYPE_COMPLETE, complete=%d\n", ++ instance, m.u.complete.count); ++ if (alsa_stream && callback) { ++ atomic_add(m.u.complete.count, &alsa_stream->retrieved); ++ callback(0, alsa_stream); ++ } else { ++ LOG_ERR(" .. unexpected alsa_stream=%p, callback=%p\n", ++ alsa_stream, callback); ++ } ++ } else { ++ LOG_ERR(" .. unexpected m.type=%d\n", m.type); ++ } ++ LOG_DBG(" .. OUT\n"); ++} ++ ++static AUDIO_INSTANCE_T *vc_vchi_audio_init(VCHI_INSTANCE_T vchi_instance, ++ VCHI_CONNECTION_T ** ++ vchi_connections, ++ uint32_t num_connections) ++{ ++ uint32_t i; ++ AUDIO_INSTANCE_T *instance; ++ int status; ++ ++ LOG_DBG("%s: start", __func__); ++ ++ if (num_connections > VCHI_MAX_NUM_CONNECTIONS) { ++ LOG_ERR("%s: unsupported number of connections %u (max=%u)\n", ++ __func__, num_connections, VCHI_MAX_NUM_CONNECTIONS); ++ ++ return NULL; ++ } ++ /* Allocate memory for this instance */ ++ instance = kmalloc(sizeof(*instance), GFP_KERNEL); ++ if (!instance) ++ return NULL; ++ ++ memset(instance, 0, sizeof(*instance)); ++ instance->num_connections = num_connections; ++ ++ /* Create a lock for exclusive, serialized VCHI connection access */ ++ mutex_init(&instance->vchi_mutex); ++ /* Open the VCHI service connections */ ++ for (i = 0; i < num_connections; i++) { ++ SERVICE_CREATION_T params = { ++ VCHI_VERSION_EX(VC_AUDIOSERV_VER, VC_AUDIOSERV_MIN_VER), ++ VC_AUDIO_SERVER_NAME, // 4cc service code ++ vchi_connections[i], // passed in fn pointers ++ 0, // rx fifo size (unused) ++ 0, // tx fifo size (unused) ++ audio_vchi_callback, // service callback ++ instance, // service callback parameter ++ 1, //TODO: remove VCOS_FALSE, // unaligned bulk recieves ++ 1, //TODO: remove VCOS_FALSE, // unaligned bulk transmits ++ 0 // want crc check on bulk transfers ++ }; ++ ++ LOG_DBG("%s: about to open %i\n", __func__, i); ++ status = vchi_service_open(vchi_instance, ¶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 */ ++ ret = wait_for_completion_interruptible(&instance->msg_avail_comp); ++ if (ret) { ++ LOG_DBG("%s: failed on waiting for event (status=%d)\n", ++ __func__, success); ++ goto unlock; ++ } ++ ++ if (instance->result != 0) { ++ LOG_ERR("%s: result=%d\n", __func__, instance->result); ++ ++ ret = -1; ++ goto unlock; ++ } ++ ++ ret = 0; ++ ++unlock: ++ vchi_service_release(instance->vchi_handle[0]); ++ mutex_unlock(&instance->vchi_mutex); ++ ++ LOG_DBG(" .. OUT\n"); ++ return ret; ++} ++ ++int bcm2835_audio_set_ctls(bcm2835_chip_t * chip) ++{ ++ int i; ++ int ret = 0; ++ LOG_DBG(" .. IN\n"); ++ LOG_DBG(" Setting ALSA dest(%d), volume(%d)\n", chip->dest, chip->volume); ++ ++ /* change ctls for all substreams */ ++ for (i = 0; i < MAX_SUBSTREAMS; i++) { ++ if (chip->avail_substreams & (1 << i)) { ++ if (!chip->alsa_stream[i]) ++ { ++ LOG_DBG(" No ALSA stream available?! %i:%p (%x)\n", i, chip->alsa_stream[i], chip->avail_substreams); ++ ret = 0; ++ } ++ else if (bcm2835_audio_set_ctls_chan /* returns 0 on success */ ++ (chip->alsa_stream[i], chip) != 0) ++ { ++ LOG_ERR("Couldn't set the controls for stream %d\n", i); ++ ret = -1; ++ } ++ else LOG_DBG(" Controls set for stream %d\n", i); ++ } ++ } ++ LOG_DBG(" .. OUT ret=%d\n", ret); ++ return ret; ++} ++ ++int bcm2835_audio_set_params(bcm2835_alsa_stream_t * alsa_stream, ++ uint32_t channels, uint32_t samplerate, ++ uint32_t bps) ++{ ++ VC_AUDIO_MSG_T m; ++ AUDIO_INSTANCE_T *instance = alsa_stream->instance; ++ int32_t success; ++ int ret; ++ LOG_DBG(" .. IN\n"); ++ ++ LOG_INFO ++ (" Setting ALSA channels(%d), samplerate(%d), bits-per-sample(%d)\n", ++ channels, samplerate, bps); ++ ++ /* resend ctls - alsa_stream may not have been open when first send */ ++ ret = bcm2835_audio_set_ctls_chan(alsa_stream, alsa_stream->chip); ++ if (ret != 0) { ++ LOG_ERR(" Alsa controls not supported\n"); ++ return -EINVAL; ++ } ++ ++ if(mutex_lock_interruptible(&instance->vchi_mutex)) ++ { ++ LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections); ++ return -EINTR; ++ } ++ vchi_service_use(instance->vchi_handle[0]); ++ ++ instance->result = -1; ++ ++ m.type = VC_AUDIO_MSG_TYPE_CONFIG; ++ m.u.config.channels = channels; ++ m.u.config.samplerate = samplerate; ++ m.u.config.bps = bps; ++ ++ /* Create the message available completion */ ++ init_completion(&instance->msg_avail_comp); ++ ++ /* Send the message to the videocore */ ++ success = vchi_msg_queue(instance->vchi_handle[0], ++ &m, sizeof m, ++ VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); ++ ++ if (success != 0) { ++ LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n", ++ __func__, success); ++ ++ ret = -1; ++ goto unlock; ++ } ++ ++ /* We are expecting a reply from the videocore */ ++ ret = wait_for_completion_interruptible(&instance->msg_avail_comp); ++ if (ret) { ++ LOG_DBG("%s: failed on waiting for event (status=%d)\n", ++ __func__, success); ++ goto unlock; ++ } ++ ++ if (instance->result != 0) { ++ LOG_ERR("%s: result=%d", __func__, instance->result); ++ ++ ret = -1; ++ goto unlock; ++ } ++ ++ ret = 0; ++ ++unlock: ++ vchi_service_release(instance->vchi_handle[0]); ++ mutex_unlock(&instance->vchi_mutex); ++ ++ LOG_DBG(" .. OUT\n"); ++ return ret; ++} ++ ++int bcm2835_audio_setup(bcm2835_alsa_stream_t * alsa_stream) ++{ ++ LOG_DBG(" .. IN\n"); ++ ++ LOG_DBG(" .. OUT\n"); ++ ++ return 0; ++} ++ ++static int bcm2835_audio_start_worker(bcm2835_alsa_stream_t * alsa_stream) ++{ ++ VC_AUDIO_MSG_T m; ++ AUDIO_INSTANCE_T *instance = alsa_stream->instance; ++ int32_t success; ++ int ret; ++ LOG_DBG(" .. IN\n"); ++ ++ if(mutex_lock_interruptible(&instance->vchi_mutex)) ++ { ++ LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections); ++ return -EINTR; ++ } ++ vchi_service_use(instance->vchi_handle[0]); ++ ++ m.type = VC_AUDIO_MSG_TYPE_START; ++ ++ /* Send the message to the videocore */ ++ success = vchi_msg_queue(instance->vchi_handle[0], ++ &m, sizeof m, ++ VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); ++ ++ if (success != 0) { ++ LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n", ++ __func__, success); ++ ++ ret = -1; ++ goto unlock; ++ } ++ ++ ret = 0; ++ ++unlock: ++ vchi_service_release(instance->vchi_handle[0]); ++ mutex_unlock(&instance->vchi_mutex); ++ LOG_DBG(" .. OUT\n"); ++ return ret; ++} ++ ++static int bcm2835_audio_stop_worker(bcm2835_alsa_stream_t * alsa_stream) ++{ ++ VC_AUDIO_MSG_T m; ++ AUDIO_INSTANCE_T *instance = alsa_stream->instance; ++ int32_t success; ++ int ret; ++ LOG_DBG(" .. IN\n"); ++ ++ if(mutex_lock_interruptible(&instance->vchi_mutex)) ++ { ++ LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections); ++ return -EINTR; ++ } ++ vchi_service_use(instance->vchi_handle[0]); ++ ++ m.type = VC_AUDIO_MSG_TYPE_STOP; ++ m.u.stop.draining = alsa_stream->draining; ++ ++ /* Send the message to the videocore */ ++ success = vchi_msg_queue(instance->vchi_handle[0], ++ &m, sizeof m, ++ VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); ++ ++ if (success != 0) { ++ LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n", ++ __func__, success); ++ ++ ret = -1; ++ goto unlock; ++ } ++ ++ ret = 0; ++ ++unlock: ++ vchi_service_release(instance->vchi_handle[0]); ++ mutex_unlock(&instance->vchi_mutex); ++ LOG_DBG(" .. OUT\n"); ++ return ret; ++} ++ ++int bcm2835_audio_close(bcm2835_alsa_stream_t * alsa_stream) ++{ ++ VC_AUDIO_MSG_T m; ++ AUDIO_INSTANCE_T *instance = alsa_stream->instance; ++ int32_t success; ++ int ret; ++ LOG_DBG(" .. IN\n"); ++ ++ my_workqueue_quit(alsa_stream); ++ ++ if(mutex_lock_interruptible(&instance->vchi_mutex)) ++ { ++ LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections); ++ return -EINTR; ++ } ++ vchi_service_use(instance->vchi_handle[0]); ++ ++ m.type = VC_AUDIO_MSG_TYPE_CLOSE; ++ ++ /* Create the message available completion */ ++ init_completion(&instance->msg_avail_comp); ++ ++ /* Send the message to the videocore */ ++ success = vchi_msg_queue(instance->vchi_handle[0], ++ &m, sizeof m, ++ VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); ++ ++ if (success != 0) { ++ LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n", ++ __func__, success); ++ ret = -1; ++ goto unlock; ++ } ++ ++ ret = wait_for_completion_interruptible(&instance->msg_avail_comp); ++ if (ret) { ++ LOG_DBG("%s: failed on waiting for event (status=%d)\n", ++ __func__, success); ++ goto unlock; ++ } ++ if (instance->result != 0) { ++ LOG_ERR("%s: failed result (status=%d)\n", ++ __func__, instance->result); ++ ++ ret = -1; ++ goto unlock; ++ } ++ ++ ret = 0; ++ ++unlock: ++ vchi_service_release(instance->vchi_handle[0]); ++ mutex_unlock(&instance->vchi_mutex); ++ ++ /* Stop the audio service */ ++ if (instance) { ++ vc_vchi_audio_deinit(instance); ++ alsa_stream->instance = NULL; ++ } ++ LOG_DBG(" .. OUT\n"); ++ return ret; ++} ++ ++int bcm2835_audio_write_worker(bcm2835_alsa_stream_t *alsa_stream, ++ uint32_t count, void *src) ++{ ++ VC_AUDIO_MSG_T m; ++ AUDIO_INSTANCE_T *instance = alsa_stream->instance; ++ int32_t success; ++ int ret; ++ ++ LOG_DBG(" .. IN\n"); ++ ++ LOG_INFO(" Writing %d bytes from %p\n", count, src); ++ ++ if(mutex_lock_interruptible(&instance->vchi_mutex)) ++ { ++ LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections); ++ return -EINTR; ++ } ++ vchi_service_use(instance->vchi_handle[0]); ++ ++ if ( instance->peer_version==0 && vchi_get_peer_version(instance->vchi_handle[0], &instance->peer_version) == 0 ) { ++ LOG_DBG("%s: client version %d connected\n", __func__, instance->peer_version); ++ } ++ m.type = VC_AUDIO_MSG_TYPE_WRITE; ++ m.u.write.count = count; ++ // old version uses bulk, new version uses control ++ m.u.write.max_packet = instance->peer_version < 2 || force_bulk ? 0:4000; ++ m.u.write.callback = alsa_stream->fifo_irq_handler; ++ m.u.write.cookie = alsa_stream; ++ m.u.write.silence = src == NULL; ++ ++ /* Send the message to the videocore */ ++ success = vchi_msg_queue(instance->vchi_handle[0], ++ &m, sizeof m, ++ VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); ++ ++ if (success != 0) { ++ LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n", ++ __func__, success); ++ ++ ret = -1; ++ goto unlock; ++ } ++ if (!m.u.write.silence) { ++ if (m.u.write.max_packet == 0) { ++ /* Send the message to the videocore */ ++ success = vchi_bulk_queue_transmit(instance->vchi_handle[0], ++ src, count, ++ 0 * ++ VCHI_FLAGS_BLOCK_UNTIL_QUEUED ++ + ++ 1 * ++ VCHI_FLAGS_BLOCK_UNTIL_DATA_READ, ++ NULL); ++ } else { ++ while (count > 0) { ++ int bytes = min((int)m.u.write.max_packet, (int)count); ++ success = vchi_msg_queue(instance->vchi_handle[0], ++ src, bytes, ++ VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); ++ src = (char *)src + bytes; ++ count -= bytes; ++ } ++ } ++ if (success != 0) { ++ LOG_ERR ++ ("%s: failed on vchi_bulk_queue_transmit (status=%d)\n", ++ __func__, success); ++ ++ ret = -1; ++ goto unlock; ++ } ++ } ++ ret = 0; ++ ++unlock: ++ vchi_service_release(instance->vchi_handle[0]); ++ mutex_unlock(&instance->vchi_mutex); ++ LOG_DBG(" .. OUT\n"); ++ return ret; ++} ++ ++/** ++ * Returns all buffers from arm->vc ++ */ ++void bcm2835_audio_flush_buffers(bcm2835_alsa_stream_t * alsa_stream) ++{ ++ LOG_DBG(" .. IN\n"); ++ LOG_DBG(" .. OUT\n"); ++ return; ++} ++ ++/** ++ * Forces VC to flush(drop) its filled playback buffers and ++ * return them the us. (VC->ARM) ++ */ ++void bcm2835_audio_flush_playback_buffers(bcm2835_alsa_stream_t * alsa_stream) ++{ ++ LOG_DBG(" .. IN\n"); ++ LOG_DBG(" .. OUT\n"); ++} ++ ++uint32_t bcm2835_audio_retrieve_buffers(bcm2835_alsa_stream_t * alsa_stream) ++{ ++ uint32_t count = atomic_read(&alsa_stream->retrieved); ++ atomic_sub(count, &alsa_stream->retrieved); ++ return count; ++} ++ ++module_param(force_bulk, bool, 0444); ++MODULE_PARM_DESC(force_bulk, "Force use of vchiq bulk for audio"); +--- /dev/null ++++ b/sound/arm/bcm2835.c +@@ -0,0 +1,511 @@ ++/***************************************************************************** ++* Copyright 2011 Broadcom Corporation. All rights reserved. ++* ++* Unless you and Broadcom execute a separate written software license ++* agreement governing use of this software, this software is licensed to you ++* under the terms of the GNU General Public License version 2, available at ++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). ++* ++* Notwithstanding the above, under no circumstances may you combine this ++* software in any way with any other Broadcom software provided under a ++* license other than the GPL, without Broadcom's express prior written ++* consent. ++*****************************************************************************/ ++ ++#include <linux/platform_device.h> ++ ++#include <linux/init.h> ++#include <linux/slab.h> ++#include <linux/module.h> ++#include <linux/of.h> ++ ++#include "bcm2835.h" ++ ++/* module parameters (see "Module Parameters") */ ++/* SNDRV_CARDS: maximum number of cards supported by this module */ ++static int index[MAX_SUBSTREAMS] = {[0 ... (MAX_SUBSTREAMS - 1)] = -1 }; ++static char *id[MAX_SUBSTREAMS] = {[0 ... (MAX_SUBSTREAMS - 1)] = NULL }; ++static int enable[MAX_SUBSTREAMS] = {[0 ... (MAX_SUBSTREAMS - 1)] = 1 }; ++ ++/* HACKY global pointers needed for successive probes to work : ssp ++ * But compared against the changes we will have to do in VC audio_ipc code ++ * to export 8 audio_ipc devices as a single IPC device and then monitor all ++ * four devices in a thread, this gets things done quickly and should be easier ++ * to debug if we run into issues ++ */ ++ ++static struct snd_card *g_card = NULL; ++static bcm2835_chip_t *g_chip = NULL; ++ ++static int snd_bcm2835_free(bcm2835_chip_t * chip) ++{ ++ kfree(chip); ++ return 0; ++} ++ ++/* component-destructor ++ * (see "Management of Cards and Components") ++ */ ++static int snd_bcm2835_dev_free(struct snd_device *device) ++{ ++ return snd_bcm2835_free(device->device_data); ++} ++ ++/* chip-specific constructor ++ * (see "Management of Cards and Components") ++ */ ++static int snd_bcm2835_create(struct snd_card *card, ++ struct platform_device *pdev, ++ bcm2835_chip_t ** rchip) ++{ ++ bcm2835_chip_t *chip; ++ int err; ++ static struct snd_device_ops ops = { ++ .dev_free = snd_bcm2835_dev_free, ++ }; ++ ++ *rchip = NULL; ++ ++ chip = kzalloc(sizeof(*chip), GFP_KERNEL); ++ if (chip == NULL) ++ return -ENOMEM; ++ ++ chip->card = card; ++ ++ err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); ++ if (err < 0) { ++ snd_bcm2835_free(chip); ++ return err; ++ } ++ ++ *rchip = chip; ++ return 0; ++} ++ ++static int snd_bcm2835_alsa_probe_dt(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ bcm2835_chip_t *chip; ++ struct snd_card *card; ++ u32 numchans; ++ int err, i; ++ ++ err = of_property_read_u32(dev->of_node, "brcm,pwm-channels", ++ &numchans); ++ if (err) { ++ dev_err(dev, "Failed to get DT property 'brcm,pwm-channels'"); ++ return err; ++ } ++ ++ if (numchans == 0 || numchans > MAX_SUBSTREAMS) { ++ numchans = MAX_SUBSTREAMS; ++ dev_warn(dev, "Illegal 'brcm,pwm-channels' value, will use %u\n", ++ numchans); ++ } ++ ++ err = snd_card_new(NULL, -1, NULL, THIS_MODULE, 0, &card); ++ if (err) { ++ dev_err(dev, "Failed to create soundcard structure\n"); ++ return err; ++ } ++ ++ snd_card_set_dev(card, dev); ++ strcpy(card->driver, "bcm2835"); ++ strcpy(card->shortname, "bcm2835 ALSA"); ++ sprintf(card->longname, "%s", card->shortname); ++ ++ err = snd_bcm2835_create(card, pdev, &chip); ++ if (err < 0) { ++ dev_err(dev, "Failed to create bcm2835 chip\n"); ++ goto err_free; ++ } ++ ++ err = snd_bcm2835_new_pcm(chip); ++ if (err < 0) { ++ dev_err(dev, "Failed to create new bcm2835 pcm device\n"); ++ goto err_free; ++ } ++ ++ err = snd_bcm2835_new_spdif_pcm(chip); ++ if (err < 0) { ++ dev_err(dev, "Failed to create new bcm2835 spdif pcm device\n"); ++ goto err_free; ++ } ++ ++ err = snd_bcm2835_new_ctl(chip); ++ if (err < 0) { ++ dev_err(dev, "Failed to create new bcm2835 ctl\n"); ++ goto err_free; ++ } ++ ++ for (i = 0; i < numchans; i++) { ++ chip->avail_substreams |= (1 << i); ++ chip->pdev[i] = pdev; ++ } ++ ++ err = snd_card_register(card); ++ if (err) { ++ dev_err(dev, "Failed to register bcm2835 ALSA card \n"); ++ goto err_free; ++ } ++ ++ g_card = card; ++ g_chip = chip; ++ platform_set_drvdata(pdev, card); ++ audio_info("bcm2835 ALSA card created with %u channels\n", numchans); ++ ++ return 0; ++ ++err_free: ++ snd_card_free(card); ++ ++ return err; ++} ++ ++static int snd_bcm2835_alsa_probe(struct platform_device *pdev) ++{ ++ static int dev; ++ bcm2835_chip_t *chip; ++ struct snd_card *card; ++ int err; ++ ++ if (pdev->dev.of_node) ++ return snd_bcm2835_alsa_probe_dt(pdev); ++ ++ if (dev >= MAX_SUBSTREAMS) ++ return -ENODEV; ++ ++ if (!enable[dev]) { ++ dev++; ++ return -ENOENT; ++ } ++ ++ if (dev > 0) ++ goto add_register_map; ++ ++ err = snd_card_new(NULL, index[dev], id[dev], THIS_MODULE, 0, &g_card); ++ if (err < 0) ++ goto out; ++ ++ snd_card_set_dev(g_card, &pdev->dev); ++ strcpy(g_card->driver, "bcm2835"); ++ strcpy(g_card->shortname, "bcm2835 ALSA"); ++ sprintf(g_card->longname, "%s", g_card->shortname); ++ ++ err = snd_bcm2835_create(g_card, pdev, &chip); ++ if (err < 0) { ++ dev_err(&pdev->dev, "Failed to create bcm2835 chip\n"); ++ goto out_bcm2835_create; ++ } ++ ++ g_chip = chip; ++ err = snd_bcm2835_new_pcm(chip); ++ if (err < 0) { ++ dev_err(&pdev->dev, "Failed to create new BCM2835 pcm device\n"); ++ goto out_bcm2835_new_pcm; ++ } ++ ++ err = snd_bcm2835_new_spdif_pcm(chip); ++ if (err < 0) { ++ dev_err(&pdev->dev, "Failed to create new BCM2835 spdif pcm device\n"); ++ goto out_bcm2835_new_spdif; ++ } ++ ++ err = snd_bcm2835_new_ctl(chip); ++ if (err < 0) { ++ dev_err(&pdev->dev, "Failed to create new BCM2835 ctl\n"); ++ goto out_bcm2835_new_ctl; ++ } ++ ++add_register_map: ++ card = g_card; ++ chip = g_chip; ++ ++ BUG_ON(!(card && chip)); ++ ++ chip->avail_substreams |= (1 << dev); ++ chip->pdev[dev] = pdev; ++ ++ if (dev == 0) { ++ err = snd_card_register(card); ++ if (err < 0) { ++ dev_err(&pdev->dev, ++ "Failed to register bcm2835 ALSA card \n"); ++ goto out_card_register; ++ } ++ platform_set_drvdata(pdev, card); ++ audio_info("bcm2835 ALSA card created!\n"); ++ } else { ++ audio_info("bcm2835 ALSA chip created!\n"); ++ platform_set_drvdata(pdev, (void *)dev); ++ } ++ ++ dev++; ++ ++ return 0; ++ ++out_card_register: ++out_bcm2835_new_ctl: ++out_bcm2835_new_spdif: ++out_bcm2835_new_pcm: ++out_bcm2835_create: ++ BUG_ON(!g_card); ++ if (snd_card_free(g_card)) ++ dev_err(&pdev->dev, "Failed to free Registered alsa card\n"); ++ g_card = NULL; ++out: ++ dev = SNDRV_CARDS; /* stop more avail_substreams from being probed */ ++ dev_err(&pdev->dev, "BCM2835 ALSA Probe failed !!\n"); ++ return err; ++} ++ ++static int snd_bcm2835_alsa_remove(struct platform_device *pdev) ++{ ++ uint32_t idx; ++ void *drv_data; ++ ++ drv_data = platform_get_drvdata(pdev); ++ ++ if (drv_data == (void *)g_card) { ++ /* This is the card device */ ++ snd_card_free((struct snd_card *)drv_data); ++ g_card = NULL; ++ g_chip = NULL; ++ } else { ++ idx = (uint32_t) drv_data; ++ if (g_card != NULL) { ++ BUG_ON(!g_chip); ++ /* We pass chip device numbers in audio ipc devices ++ * other than the one we registered our card with ++ */ ++ idx = (uint32_t) drv_data; ++ BUG_ON(!idx || idx > MAX_SUBSTREAMS); ++ g_chip->avail_substreams &= ~(1 << idx); ++ /* There should be atleast one substream registered ++ * after we are done here, as it wil be removed when ++ * the *remove* is called for the card device ++ */ ++ BUG_ON(!g_chip->avail_substreams); ++ } ++ } ++ ++ platform_set_drvdata(pdev, NULL); ++ ++ return 0; ++} ++ ++#ifdef CONFIG_PM ++static int snd_bcm2835_alsa_suspend(struct platform_device *pdev, ++ pm_message_t state) ++{ ++ return 0; ++} ++ ++static int snd_bcm2835_alsa_resume(struct platform_device *pdev) ++{ ++ return 0; ++} ++ ++#endif ++ ++static const struct of_device_id snd_bcm2835_of_match_table[] = { ++ { .compatible = "brcm,bcm2835-audio", }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, snd_bcm2835_of_match_table); ++ ++static struct platform_driver bcm2835_alsa0_driver = { ++ .probe = snd_bcm2835_alsa_probe, ++ .remove = snd_bcm2835_alsa_remove, ++#ifdef CONFIG_PM ++ .suspend = snd_bcm2835_alsa_suspend, ++ .resume = snd_bcm2835_alsa_resume, ++#endif ++ .driver = { ++ .name = "bcm2835_AUD0", ++ .owner = THIS_MODULE, ++ .of_match_table = snd_bcm2835_of_match_table, ++ }, ++}; ++ ++static struct platform_driver bcm2835_alsa1_driver = { ++ .probe = snd_bcm2835_alsa_probe, ++ .remove = snd_bcm2835_alsa_remove, ++#ifdef CONFIG_PM ++ .suspend = snd_bcm2835_alsa_suspend, ++ .resume = snd_bcm2835_alsa_resume, ++#endif ++ .driver = { ++ .name = "bcm2835_AUD1", ++ .owner = THIS_MODULE, ++ }, ++}; ++ ++static struct platform_driver bcm2835_alsa2_driver = { ++ .probe = snd_bcm2835_alsa_probe, ++ .remove = snd_bcm2835_alsa_remove, ++#ifdef CONFIG_PM ++ .suspend = snd_bcm2835_alsa_suspend, ++ .resume = snd_bcm2835_alsa_resume, ++#endif ++ .driver = { ++ .name = "bcm2835_AUD2", ++ .owner = THIS_MODULE, ++ }, ++}; ++ ++static struct platform_driver bcm2835_alsa3_driver = { ++ .probe = snd_bcm2835_alsa_probe, ++ .remove = snd_bcm2835_alsa_remove, ++#ifdef CONFIG_PM ++ .suspend = snd_bcm2835_alsa_suspend, ++ .resume = snd_bcm2835_alsa_resume, ++#endif ++ .driver = { ++ .name = "bcm2835_AUD3", ++ .owner = THIS_MODULE, ++ }, ++}; ++ ++static struct platform_driver bcm2835_alsa4_driver = { ++ .probe = snd_bcm2835_alsa_probe, ++ .remove = snd_bcm2835_alsa_remove, ++#ifdef CONFIG_PM ++ .suspend = snd_bcm2835_alsa_suspend, ++ .resume = snd_bcm2835_alsa_resume, ++#endif ++ .driver = { ++ .name = "bcm2835_AUD4", ++ .owner = THIS_MODULE, ++ }, ++}; ++ ++static struct platform_driver bcm2835_alsa5_driver = { ++ .probe = snd_bcm2835_alsa_probe, ++ .remove = snd_bcm2835_alsa_remove, ++#ifdef CONFIG_PM ++ .suspend = snd_bcm2835_alsa_suspend, ++ .resume = snd_bcm2835_alsa_resume, ++#endif ++ .driver = { ++ .name = "bcm2835_AUD5", ++ .owner = THIS_MODULE, ++ }, ++}; ++ ++static struct platform_driver bcm2835_alsa6_driver = { ++ .probe = snd_bcm2835_alsa_probe, ++ .remove = snd_bcm2835_alsa_remove, ++#ifdef CONFIG_PM ++ .suspend = snd_bcm2835_alsa_suspend, ++ .resume = snd_bcm2835_alsa_resume, ++#endif ++ .driver = { ++ .name = "bcm2835_AUD6", ++ .owner = THIS_MODULE, ++ }, ++}; ++ ++static struct platform_driver bcm2835_alsa7_driver = { ++ .probe = snd_bcm2835_alsa_probe, ++ .remove = snd_bcm2835_alsa_remove, ++#ifdef CONFIG_PM ++ .suspend = snd_bcm2835_alsa_suspend, ++ .resume = snd_bcm2835_alsa_resume, ++#endif ++ .driver = { ++ .name = "bcm2835_AUD7", ++ .owner = THIS_MODULE, ++ }, ++}; ++ ++static int bcm2835_alsa_device_init(void) ++{ ++ int err; ++ err = platform_driver_register(&bcm2835_alsa0_driver); ++ if (err) { ++ pr_err("Error registering bcm2835_alsa0_driver %d .\n", err); ++ goto out; ++ } ++ ++ err = platform_driver_register(&bcm2835_alsa1_driver); ++ if (err) { ++ pr_err("Error registering bcm2835_alsa0_driver %d .\n", err); ++ goto unregister_0; ++ } ++ ++ err = platform_driver_register(&bcm2835_alsa2_driver); ++ if (err) { ++ pr_err("Error registering bcm2835_alsa0_driver %d .\n", err); ++ goto unregister_1; ++ } ++ ++ err = platform_driver_register(&bcm2835_alsa3_driver); ++ if (err) { ++ pr_err("Error registering bcm2835_alsa0_driver %d .\n", err); ++ goto unregister_2; ++ } ++ ++ err = platform_driver_register(&bcm2835_alsa4_driver); ++ if (err) { ++ pr_err("Error registering bcm2835_alsa0_driver %d .\n", err); ++ goto unregister_3; ++ } ++ ++ err = platform_driver_register(&bcm2835_alsa5_driver); ++ if (err) { ++ pr_err("Error registering bcm2835_alsa0_driver %d .\n", err); ++ goto unregister_4; ++ } ++ ++ err = platform_driver_register(&bcm2835_alsa6_driver); ++ if (err) { ++ pr_err("Error registering bcm2835_alsa0_driver %d .\n", err); ++ goto unregister_5; ++ } ++ ++ err = platform_driver_register(&bcm2835_alsa7_driver); ++ if (err) { ++ pr_err("Error registering bcm2835_alsa0_driver %d .\n", err); ++ goto unregister_6; ++ } ++ ++ return 0; ++ ++unregister_6: ++ platform_driver_unregister(&bcm2835_alsa6_driver); ++unregister_5: ++ platform_driver_unregister(&bcm2835_alsa5_driver); ++unregister_4: ++ platform_driver_unregister(&bcm2835_alsa4_driver); ++unregister_3: ++ platform_driver_unregister(&bcm2835_alsa3_driver); ++unregister_2: ++ platform_driver_unregister(&bcm2835_alsa2_driver); ++unregister_1: ++ platform_driver_unregister(&bcm2835_alsa1_driver); ++unregister_0: ++ platform_driver_unregister(&bcm2835_alsa0_driver); ++out: ++ return err; ++} ++ ++static void bcm2835_alsa_device_exit(void) ++{ ++ platform_driver_unregister(&bcm2835_alsa0_driver); ++ platform_driver_unregister(&bcm2835_alsa1_driver); ++ platform_driver_unregister(&bcm2835_alsa2_driver); ++ platform_driver_unregister(&bcm2835_alsa3_driver); ++ platform_driver_unregister(&bcm2835_alsa4_driver); ++ platform_driver_unregister(&bcm2835_alsa5_driver); ++ platform_driver_unregister(&bcm2835_alsa6_driver); ++ platform_driver_unregister(&bcm2835_alsa7_driver); ++} ++ ++late_initcall(bcm2835_alsa_device_init); ++module_exit(bcm2835_alsa_device_exit); ++ ++MODULE_AUTHOR("Dom Cobley"); ++MODULE_DESCRIPTION("Alsa driver for BCM2835 chip"); ++MODULE_LICENSE("GPL"); ++MODULE_ALIAS("platform:bcm2835_alsa"); +--- /dev/null ++++ b/sound/arm/bcm2835.h +@@ -0,0 +1,167 @@ ++/***************************************************************************** ++* Copyright 2011 Broadcom Corporation. All rights reserved. ++* ++* Unless you and Broadcom execute a separate written software license ++* agreement governing use of this software, this software is licensed to you ++* under the terms of the GNU General Public License version 2, available at ++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). ++* ++* Notwithstanding the above, under no circumstances may you combine this ++* software in any way with any other Broadcom software provided under a ++* license other than the GPL, without Broadcom's express prior written ++* consent. ++*****************************************************************************/ ++ ++#ifndef __SOUND_ARM_BCM2835_H ++#define __SOUND_ARM_BCM2835_H ++ ++#include <linux/device.h> ++#include <linux/list.h> ++#include <linux/interrupt.h> ++#include <linux/wait.h> ++#include <sound/core.h> ++#include <sound/initval.h> ++#include <sound/pcm.h> ++#include <sound/pcm_params.h> ++#include <sound/pcm-indirect.h> ++#include <linux/workqueue.h> ++ ++/* ++#define AUDIO_DEBUG_ENABLE ++#define AUDIO_VERBOSE_DEBUG_ENABLE ++*/ ++ ++/* Debug macros */ ++ ++#ifdef AUDIO_DEBUG_ENABLE ++#ifdef AUDIO_VERBOSE_DEBUG_ENABLE ++ ++#define audio_debug(fmt, arg...) \ ++ printk(KERN_INFO"%s:%d " fmt, __func__, __LINE__, ##arg) ++ ++#define audio_info(fmt, arg...) \ ++ printk(KERN_INFO"%s:%d " fmt, __func__, __LINE__, ##arg) ++ ++#else ++ ++#define audio_debug(fmt, arg...) ++ ++#define audio_info(fmt, arg...) ++ ++#endif /* AUDIO_VERBOSE_DEBUG_ENABLE */ ++ ++#else ++ ++#define audio_debug(fmt, arg...) ++ ++#define audio_info(fmt, arg...) ++ ++#endif /* AUDIO_DEBUG_ENABLE */ ++ ++#define audio_error(fmt, arg...) \ ++ printk(KERN_ERR"%s:%d " fmt, __func__, __LINE__, ##arg) ++ ++#define audio_warning(fmt, arg...) \ ++ printk(KERN_WARNING"%s:%d " fmt, __func__, __LINE__, ##arg) ++ ++#define audio_alert(fmt, arg...) \ ++ printk(KERN_ALERT"%s:%d " fmt, __func__, __LINE__, ##arg) ++ ++#define MAX_SUBSTREAMS (8) ++#define AVAIL_SUBSTREAMS_MASK (0xff) ++enum { ++ CTRL_VOL_MUTE, ++ CTRL_VOL_UNMUTE ++}; ++ ++/* macros for alsa2chip and chip2alsa, instead of functions */ ++ ++#define alsa2chip(vol) (uint)(-((vol << 8) / 100)) /* convert alsa to chip volume (defined as macro rather than function call) */ ++#define chip2alsa(vol) -((vol * 100) >> 8) /* convert chip to alsa volume */ ++ ++/* Some constants for values .. */ ++typedef enum { ++ AUDIO_DEST_AUTO = 0, ++ AUDIO_DEST_HEADPHONES = 1, ++ AUDIO_DEST_HDMI = 2, ++ AUDIO_DEST_MAX, ++} SND_BCM2835_ROUTE_T; ++ ++typedef enum { ++ PCM_PLAYBACK_VOLUME, ++ PCM_PLAYBACK_MUTE, ++ PCM_PLAYBACK_DEVICE, ++} SND_BCM2835_CTRL_T; ++ ++/* definition of the chip-specific record */ ++typedef struct bcm2835_chip { ++ struct snd_card *card; ++ struct snd_pcm *pcm; ++ struct snd_pcm *pcm_spdif; ++ /* Bitmat for valid reg_base and irq numbers */ ++ uint32_t avail_substreams; ++ struct platform_device *pdev[MAX_SUBSTREAMS]; ++ struct bcm2835_alsa_stream *alsa_stream[MAX_SUBSTREAMS]; ++ ++ int volume; ++ int old_volume; /* stores the volume value whist muted */ ++ int dest; ++ int mute; ++ ++ unsigned int opened; ++ unsigned int spdif_status; ++ struct mutex audio_mutex; ++} bcm2835_chip_t; ++ ++typedef struct bcm2835_alsa_stream { ++ bcm2835_chip_t *chip; ++ struct snd_pcm_substream *substream; ++ struct snd_pcm_indirect pcm_indirect; ++ ++ struct semaphore buffers_update_sem; ++ struct semaphore control_sem; ++ spinlock_t lock; ++ volatile uint32_t control; ++ volatile uint32_t status; ++ ++ int open; ++ int running; ++ int draining; ++ ++ int channels; ++ int params_rate; ++ int pcm_format_width; ++ ++ unsigned int pos; ++ unsigned int buffer_size; ++ unsigned int period_size; ++ ++ uint32_t enable_fifo_irq; ++ irq_handler_t fifo_irq_handler; ++ ++ atomic_t retrieved; ++ struct opaque_AUDIO_INSTANCE_T *instance; ++ struct workqueue_struct *my_wq; ++ int idx; ++} bcm2835_alsa_stream_t; ++ ++int snd_bcm2835_new_ctl(bcm2835_chip_t * chip); ++int snd_bcm2835_new_pcm(bcm2835_chip_t * chip); ++int snd_bcm2835_new_spdif_pcm(bcm2835_chip_t * chip); ++ ++int bcm2835_audio_open(bcm2835_alsa_stream_t * alsa_stream); ++int bcm2835_audio_close(bcm2835_alsa_stream_t * alsa_stream); ++int bcm2835_audio_set_params(bcm2835_alsa_stream_t * alsa_stream, ++ uint32_t channels, uint32_t samplerate, ++ uint32_t bps); ++int bcm2835_audio_setup(bcm2835_alsa_stream_t * alsa_stream); ++int bcm2835_audio_start(bcm2835_alsa_stream_t * alsa_stream); ++int bcm2835_audio_stop(bcm2835_alsa_stream_t * alsa_stream); ++int bcm2835_audio_set_ctls(bcm2835_chip_t * chip); ++int bcm2835_audio_write(bcm2835_alsa_stream_t * alsa_stream, uint32_t count, ++ void *src); ++uint32_t bcm2835_audio_retrieve_buffers(bcm2835_alsa_stream_t * alsa_stream); ++void bcm2835_audio_flush_buffers(bcm2835_alsa_stream_t * alsa_stream); ++void bcm2835_audio_flush_playback_buffers(bcm2835_alsa_stream_t * alsa_stream); ++ ++#endif /* __SOUND_ARM_BCM2835_H */ +--- /dev/null ++++ b/sound/arm/vc_vchi_audioserv_defs.h +@@ -0,0 +1,116 @@ ++/***************************************************************************** ++* Copyright 2011 Broadcom Corporation. All rights reserved. ++* ++* Unless you and Broadcom execute a separate written software license ++* agreement governing use of this software, this software is licensed to you ++* under the terms of the GNU General Public License version 2, available at ++* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). ++* ++* Notwithstanding the above, under no circumstances may you combine this ++* software in any way with any other Broadcom software provided under a ++* license other than the GPL, without Broadcom's express prior written ++* consent. ++*****************************************************************************/ ++ ++#ifndef _VC_AUDIO_DEFS_H_ ++#define _VC_AUDIO_DEFS_H_ ++ ++#define VC_AUDIOSERV_MIN_VER 1 ++#define VC_AUDIOSERV_VER 2 ++ ++// FourCC code used for VCHI connection ++#define VC_AUDIO_SERVER_NAME MAKE_FOURCC("AUDS") ++ ++// Maximum message length ++#define VC_AUDIO_MAX_MSG_LEN (sizeof( VC_AUDIO_MSG_T )) ++ ++// List of screens that are currently supported ++// All message types supported for HOST->VC direction ++typedef enum { ++ VC_AUDIO_MSG_TYPE_RESULT, // Generic result ++ VC_AUDIO_MSG_TYPE_COMPLETE, // Generic result ++ VC_AUDIO_MSG_TYPE_CONFIG, // Configure audio ++ VC_AUDIO_MSG_TYPE_CONTROL, // Configure audio ++ VC_AUDIO_MSG_TYPE_OPEN, // Configure audio ++ VC_AUDIO_MSG_TYPE_CLOSE, // Configure audio ++ VC_AUDIO_MSG_TYPE_START, // Configure audio ++ VC_AUDIO_MSG_TYPE_STOP, // Configure audio ++ VC_AUDIO_MSG_TYPE_WRITE, // Configure audio ++ VC_AUDIO_MSG_TYPE_MAX ++} VC_AUDIO_MSG_TYPE; ++ ++// configure the audio ++typedef struct { ++ uint32_t channels; ++ uint32_t samplerate; ++ uint32_t bps; ++ ++} VC_AUDIO_CONFIG_T; ++ ++typedef struct { ++ uint32_t volume; ++ uint32_t dest; ++ ++} VC_AUDIO_CONTROL_T; ++ ++// audio ++typedef struct { ++ uint32_t dummy; ++ ++} VC_AUDIO_OPEN_T; ++ ++// audio ++typedef struct { ++ uint32_t dummy; ++ ++} VC_AUDIO_CLOSE_T; ++// audio ++typedef struct { ++ uint32_t dummy; ++ ++} VC_AUDIO_START_T; ++// audio ++typedef struct { ++ uint32_t draining; ++ ++} VC_AUDIO_STOP_T; ++ ++// configure the write audio samples ++typedef struct { ++ uint32_t count; // in bytes ++ void *callback; ++ void *cookie; ++ uint16_t silence; ++ uint16_t max_packet; ++} VC_AUDIO_WRITE_T; ++ ++// Generic result for a request (VC->HOST) ++typedef struct { ++ int32_t success; // Success value ++ ++} VC_AUDIO_RESULT_T; ++ ++// Generic result for a request (VC->HOST) ++typedef struct { ++ int32_t count; // Success value ++ void *callback; ++ void *cookie; ++} VC_AUDIO_COMPLETE_T; ++ ++// Message header for all messages in HOST->VC direction ++typedef struct { ++ int32_t type; // Message type (VC_AUDIO_MSG_TYPE) ++ union { ++ VC_AUDIO_CONFIG_T config; ++ VC_AUDIO_CONTROL_T control; ++ VC_AUDIO_OPEN_T open; ++ VC_AUDIO_CLOSE_T close; ++ VC_AUDIO_START_T start; ++ VC_AUDIO_STOP_T stop; ++ VC_AUDIO_WRITE_T write; ++ VC_AUDIO_RESULT_T result; ++ VC_AUDIO_COMPLETE_T complete; ++ } u; ++} VC_AUDIO_MSG_T; ++ ++#endif // _VC_AUDIO_DEFS_H_ |