+++ /dev/null
-From a7e31a16c66c5ecd1665250cfee9f3cfb64cfa67 Mon Sep 17 00:00:00 2001
-From: popcornmix <popcornmix@gmail.com>
-Date: Mon, 26 Mar 2012 22:15:50 +0100
-Subject: [PATCH 09/54] bcm2708: alsa sound driver
-
- Signed-off-by: popcornmix <popcornmix@gmail.com>
----
- arch/arm/configs/bcmrpi_cutdown_defconfig | 20 +
- arch/arm/configs/bcmrpi_defconfig | 20 +
- arch/arm/mach-bcm2708/bcm2708.c | 54 ++
- sound/arm/Kconfig | 7 +
- sound/arm/Makefile | 5 +
- sound/arm/bcm2835-ctl.c | 200 +++++++
- sound/arm/bcm2835-pcm.c | 409 +++++++++++++++
- sound/arm/bcm2835-vchiq.c | 844 ++++++++++++++++++++++++++++++
- sound/arm/bcm2835.c | 413 +++++++++++++++
- sound/arm/bcm2835.h | 155 ++++++
- sound/arm/vc_vchi_audioserv_defs.h | 116 ++++
- 11 files changed, 2243 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 100755 sound/arm/bcm2835.c
- create mode 100755 sound/arm/bcm2835.h
- create mode 100644 sound/arm/vc_vchi_audioserv_defs.h
-
---- a/arch/arm/configs/bcmrpi_cutdown_defconfig
-+++ b/arch/arm/configs/bcmrpi_cutdown_defconfig
-@@ -208,6 +208,26 @@ CONFIG_FRAMEBUFFER_CONSOLE=y
- CONFIG_LOGO=y
- # CONFIG_LOGO_LINUX_MONO is not set
- # CONFIG_LOGO_LINUX_VGA16 is not set
-+CONFIG_SOUND=y
-+CONFIG_SND=m
-+CONFIG_SND_SEQUENCER=m
-+CONFIG_SND_SEQ_DUMMY=m
-+CONFIG_SND_MIXER_OSS=m
-+CONFIG_SND_PCM_OSS=m
-+CONFIG_SND_SEQUENCER_OSS=y
-+CONFIG_SND_HRTIMER=m
-+CONFIG_SND_DUMMY=m
-+CONFIG_SND_ALOOP=m
-+CONFIG_SND_VIRMIDI=m
-+CONFIG_SND_MTPAV=m
-+CONFIG_SND_SERIAL_U16550=m
-+CONFIG_SND_MPU401=m
-+CONFIG_SND_BCM2835=m
-+CONFIG_SND_USB_AUDIO=m
-+CONFIG_SND_USB_UA101=m
-+CONFIG_SND_USB_CAIAQ=m
-+CONFIG_SND_USB_6FIRE=m
-+CONFIG_SOUND_PRIME=m
- CONFIG_HID_PID=y
- CONFIG_USB_HIDDEV=y
- CONFIG_HID_A4TECH=m
---- a/arch/arm/configs/bcmrpi_defconfig
-+++ b/arch/arm/configs/bcmrpi_defconfig
-@@ -225,6 +225,26 @@ CONFIG_FRAMEBUFFER_CONSOLE=y
- CONFIG_LOGO=y
- # CONFIG_LOGO_LINUX_MONO is not set
- # CONFIG_LOGO_LINUX_VGA16 is not set
-+CONFIG_SOUND=y
-+CONFIG_SND=m
-+CONFIG_SND_SEQUENCER=m
-+CONFIG_SND_SEQ_DUMMY=m
-+CONFIG_SND_MIXER_OSS=m
-+CONFIG_SND_PCM_OSS=m
-+CONFIG_SND_SEQUENCER_OSS=y
-+CONFIG_SND_HRTIMER=m
-+CONFIG_SND_DUMMY=m
-+CONFIG_SND_ALOOP=m
-+CONFIG_SND_VIRMIDI=m
-+CONFIG_SND_MTPAV=m
-+CONFIG_SND_SERIAL_U16550=m
-+CONFIG_SND_MPU401=m
-+CONFIG_SND_BCM2835=m
-+CONFIG_SND_USB_AUDIO=m
-+CONFIG_SND_USB_UA101=m
-+CONFIG_SND_USB_CAIAQ=m
-+CONFIG_SND_USB_6FIRE=m
-+CONFIG_SOUND_PRIME=m
- CONFIG_HID_PID=y
- CONFIG_USB_HIDDEV=y
- CONFIG_HID_A4TECH=m
---- a/arch/arm/mach-bcm2708/bcm2708.c
-+++ b/arch/arm/mach-bcm2708/bcm2708.c
-@@ -431,6 +431,58 @@ struct platform_device bcm2708_powerman_
- .coherent_dma_mask = 0xffffffffUL},
- };
-
-+
-+static struct platform_device bcm2708_alsa_devices[] = {
-+ [0] = {
-+ .name = "bcm2835_AUD0",
-+ .id = 0, /* first audio device */
-+ .resource = 0,
-+ .num_resources = 0,
-+ },
-+ [1] = {
-+ .name = "bcm2835_AUD1",
-+ .id = 1, /* second audio device */
-+ .resource = 0,
-+ .num_resources = 0,
-+ },
-+ [2] = {
-+ .name = "bcm2835_AUD2",
-+ .id = 2, /* third audio device */
-+ .resource = 0,
-+ .num_resources = 0,
-+ },
-+ [3] = {
-+ .name = "bcm2835_AUD3",
-+ .id = 3, /* forth audio device */
-+ .resource = 0,
-+ .num_resources = 0,
-+ },
-+ [4] = {
-+ .name = "bcm2835_AUD4",
-+ .id = 4, /* fifth audio device */
-+ .resource = 0,
-+ .num_resources = 0,
-+ },
-+ [5] = {
-+ .name = "bcm2835_AUD5",
-+ .id = 5, /* sixth audio device */
-+ .resource = 0,
-+ .num_resources = 0,
-+ },
-+ [6] = {
-+ .name = "bcm2835_AUD6",
-+ .id = 6, /* seventh audio device */
-+ .resource = 0,
-+ .num_resources = 0,
-+ },
-+ [7] = {
-+ .name = "bcm2835_AUD7",
-+ .id = 7, /* eighth audio device */
-+ .resource = 0,
-+ .num_resources = 0,
-+ },
-+};
-+
- int __init bcm_register_device(struct platform_device *pdev)
- {
- int ret;
-@@ -539,6 +591,8 @@ void __init bcm2708_init(void)
- bcm_register_device(&bcm2708_emmc_device);
- #endif
- bcm2708_init_led();
-+ for (i = 0; i < ARRAY_SIZE(bcm2708_alsa_devices); i++)
-+ bcm_register_device(&bcm2708_alsa_devices[i]);
-
- for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
- struct amba_device *d = amba_devs[i];
---- a/sound/arm/Kconfig
-+++ b/sound/arm/Kconfig
-@@ -39,5 +39,12 @@ 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 && 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 +1,200 @@
-+/*****************************************************************************
-+* 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 "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,
-+ },
-+};
-+
-+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;
-+ }
-+ return 0;
-+}
---- /dev/null
-+++ b/sound/arm/bcm2835-pcm.c
-@@ -0,0 +1,409 @@
-+/*****************************************************************************
-+* 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 "bcm2835.h"
-+
-+/* hardware definition */
-+static struct snd_pcm_hardware snd_bcm2835_playback_hw = {
-+ .info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER),
-+ .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 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(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;
-+ int idx;
-+ int err;
-+
-+ audio_info(" .. IN (%d)\n", substream->number);
-+
-+ audio_info("Alsa open (%d)\n", substream->number);
-+ idx = substream->number;
-+
-+ 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) {
-+ return -ENOMEM;
-+ }
-+
-+ /* 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);
-+ return err;
-+ }
-+ runtime->private_data = alsa_stream;
-+ runtime->private_free = snd_bcm2835_playback_free;
-+ 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;
-+
-+ alsa_stream->open = 1;
-+ alsa_stream->draining = 1;
-+
-+out:
-+ audio_info(" .. OUT =%d\n", err);
-+
-+ return err;
-+}
-+
-+/* close callback */
-+static int snd_bcm2835_playback_close(struct snd_pcm_substream *substream)
-+{
-+ /* the hardware-specific codes will be here */
-+
-+ struct snd_pcm_runtime *runtime = substream->runtime;
-+ bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
-+
-+ audio_info(" .. IN\n");
-+ 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
-+ */
-+
-+ 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)
-+{
-+ int err;
-+ struct snd_pcm_runtime *runtime = substream->runtime;
-+ bcm2835_alsa_stream_t *alsa_stream =
-+ (bcm2835_alsa_stream_t *) runtime->private_data;
-+
-+ 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;
-+ }
-+
-+ err = bcm2835_audio_set_params(alsa_stream, params_channels(params),
-+ params_rate(params),
-+ snd_pcm_format_width(params_format
-+ (params)));
-+ 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);
-+
-+ 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)
-+{
-+ struct snd_pcm_runtime *runtime = substream->runtime;
-+ bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
-+
-+ audio_info(" .. IN\n");
-+
-+ 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;
-+}
-+
-+/* 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->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 bytes_to_frames(runtime, alsa_stream->pos);
-+}
-+
-+static int snd_bcm2835_pcm_copy(struct snd_pcm_substream *substream,
-+ int channel, snd_pcm_uframes_t pos, void *src,
-+ snd_pcm_uframes_t count)
-+{
-+ int ret;
-+ struct snd_pcm_runtime *runtime = substream->runtime;
-+ bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
-+
-+ audio_info(" .. IN\n");
-+ audio_debug("copy.......... (%d) hwptr=%d appl=%d pos=%d\n",
-+ frames_to_bytes(runtime, count), frames_to_bytes(runtime,
-+ runtime->
-+ status->
-+ hw_ptr),
-+ frames_to_bytes(runtime, runtime->control->appl_ptr),
-+ alsa_stream->pos);
-+ ret =
-+ bcm2835_audio_write(alsa_stream, frames_to_bytes(runtime, count),
-+ src);
-+ audio_info(" .. OUT\n");
-+ return ret;
-+}
-+
-+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,
-+ .copy = snd_bcm2835_pcm_copy,
-+};
-+
-+/* create a pcm device */
-+int snd_bcm2835_new_pcm(bcm2835_chip_t * chip)
-+{
-+ struct snd_pcm *pcm;
-+ int err;
-+
-+ audio_info(" .. IN\n");
-+ err =
-+ snd_pcm_new(chip->card, "bcm2835 ALSA", 0, MAX_SUBSTREAMS, 0, &pcm);
-+ if (err < 0)
-+ return err;
-+ 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);
-+
-+ audio_info(" .. OUT\n");
-+
-+ return 0;
-+}
---- /dev/null
-+++ b/sound/arm/bcm2835-vchiq.c
-@@ -0,0 +1,844 @@
-+/*****************************************************************************
-+* 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 "bcm2835.h"
-+
-+/* ---- Include Files -------------------------------------------------------- */
-+
-+#include "interface/vchi/vchi.h"
-+#include "vc_vchi_audioserv_defs.h"
-+
-+/* ---- Private Constants and Types ------------------------------------------ */
-+
-+/* 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 semaphore msg_avail_event;
-+ 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);
-+
-+typedef struct {
-+ struct work_struct my_work;
-+ bcm2835_alsa_stream_t *alsa_stream;
-+ int x;
-+} 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->x);
-+ switch (w->x) {
-+ case 1:
-+ ret = bcm2835_audio_start_worker(w->alsa_stream);
-+ break;
-+ case 2:
-+ ret = bcm2835_audio_stop_worker(w->alsa_stream);
-+ break;
-+ default:
-+ LOG_ERR(" Unexpected work: %p:%d\n", w->alsa_stream, w->x);
-+ 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->x = 1;
-+ 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->x = 2;
-+ 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;
-+ bcm2835_alsa_stream_t *alsa_stream = 0;
-+ LOG_DBG(" .. IN instance=%p, param=%p, reason=%d, handle=%p\n",
-+ instance, param, reason, msg_handle);
-+
-+ if (!instance || reason != VCHI_CALLBACK_MSG_AVAILABLE) {
-+ return;
-+ }
-+ alsa_stream = instance->alsa_stream;
-+ 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;
-+ up(&instance->msg_avail_event);
-+ } else if (m.type == VC_AUDIO_MSG_TYPE_COMPLETE) {
-+ 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_DBG(" .. unexpected alsa_stream=%p, callback=%p\n",
-+ alsa_stream, callback);
-+ }
-+ } else {
-+ LOG_DBG(" .. 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);
-+
-+ 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
-+ };
-+
-+ status = vchi_service_open(vchi_instance, ¶ms,
-+ &instance->vchi_handle[i]);
-+ 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]);
-+ }
-+
-+ return instance;
-+
-+err_close_services:
-+ for (i = 0; i < instance->num_connections; i++) {
-+ vchi_service_close(instance->vchi_handle[i]);
-+ }
-+
-+ kfree(instance);
-+
-+ 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_ERR
-+ ("%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;
-+ AUDIO_INSTANCE_T *instance = alsa_stream->instance;
-+ int ret;
-+ LOG_DBG(" .. IN\n");
-+
-+ LOG_INFO("%s: start", __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 */
-+ 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;
-+ }
-+
-+ /* Initialize an instance of the audio service */
-+ instance = vc_vchi_audio_init(vchi_instance, &vchi_connection, 1);
-+
-+ if (instance == NULL /*|| audio_handle != instance */ ) {
-+ 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;
-+
-+ 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 event */
-+ sema_init(&instance->msg_avail_event, 0);
-+
-+ /* 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 */
-+ if (down_interruptible(&instance->msg_avail_event)) {
-+ LOG_ERR("%s: failed on waiting for event (status=%d)\n",
-+ __func__, success);
-+
-+ ret = -1;
-+ 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");
-+
-+ /* 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_DBG("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 event */
-+ sema_init(&instance->msg_avail_event, 0);
-+
-+ /* 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 */
-+ if (down_interruptible(&instance->msg_avail_event)) {
-+ LOG_ERR("%s: failed on waiting for event (status=%d)\n",
-+ __func__, success);
-+
-+ ret = -1;
-+ 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)",
-+ __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)",
-+ __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 event */
-+ sema_init(&instance->msg_avail_event, 0);
-+
-+ /* 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)",
-+ __func__, success);
-+ ret = -1;
-+ goto unlock;
-+ }
-+ if (down_interruptible(&instance->msg_avail_event)) {
-+ LOG_ERR("%s: failed on waiting for event (status=%d)",
-+ __func__, success);
-+
-+ ret = -1;
-+ goto unlock;
-+ }
-+ if (instance->result != 0) {
-+ LOG_ERR("%s: failed result (status=%d)",
-+ __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(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)",
-+ __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)",
-+ __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 +1,413 @@
-+/*****************************************************************************
-+* 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 "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(struct platform_device *pdev)
-+{
-+ static int dev;
-+ bcm2835_chip_t *chip;
-+ struct snd_card *card;
-+ int err;
-+
-+ if (dev >= MAX_SUBSTREAMS)
-+ return -ENODEV;
-+
-+ if (!enable[dev]) {
-+ dev++;
-+ return -ENOENT;
-+ }
-+
-+ if (dev > 0)
-+ goto add_register_map;
-+
-+ err = snd_card_create(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, "BRCM bcm2835 ALSA Driver");
-+ 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) {
-+ printk(KERN_ERR "Failed to create bcm2835 chip\n");
-+ goto out_bcm2835_create;
-+ }
-+
-+ g_chip = chip;
-+ err = snd_bcm2835_new_pcm(chip);
-+ if (err < 0) {
-+ printk(KERN_ERR "Failed to create new BCM2835 pcm device\n");
-+ goto out_bcm2835_new_pcm;
-+ }
-+
-+ err = snd_bcm2835_new_ctl(chip);
-+ if (err < 0) {
-+ printk(KERN_ERR "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) {
-+ printk(KERN_ERR
-+ "Failed to register bcm2835 ALSA card \n");
-+ goto out_card_register;
-+ }
-+ platform_set_drvdata(pdev, card);
-+ printk(KERN_INFO "bcm2835 ALSA card created!\n");
-+ } else {
-+ printk(KERN_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_pcm:
-+out_bcm2835_create:
-+ BUG_ON(!g_card);
-+ if (snd_card_free(g_card))
-+ printk(KERN_ERR "Failed to free Registered alsa card\n");
-+ g_card = NULL;
-+out:
-+ dev = SNDRV_CARDS; /* stop more avail_substreams from being probed */
-+ printk(KERN_ERR "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 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,
-+ },
-+};
-+
-+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) {
-+ printk("Error registering bcm2835_alsa0_driver %d .\n", err);
-+ goto out;
-+ }
-+
-+ err = platform_driver_register(&bcm2835_alsa1_driver);
-+ if (err) {
-+ printk("Error registering bcm2835_alsa1_driver %d .\n", err);
-+ goto unregister_0;
-+ }
-+
-+ err = platform_driver_register(&bcm2835_alsa2_driver);
-+ if (err) {
-+ printk("Error registering bcm2835_alsa2_driver %d .\n", err);
-+ goto unregister_1;
-+ }
-+
-+ err = platform_driver_register(&bcm2835_alsa3_driver);
-+ if (err) {
-+ printk("Error registering bcm2835_alsa3_driver %d .\n", err);
-+ goto unregister_2;
-+ }
-+
-+ err = platform_driver_register(&bcm2835_alsa4_driver);
-+ if (err) {
-+ printk("Error registering bcm2835_alsa4_driver %d .\n", err);
-+ goto unregister_3;
-+ }
-+
-+ err = platform_driver_register(&bcm2835_alsa5_driver);
-+ if (err) {
-+ printk("Error registering bcm2835_alsa5_driver %d .\n", err);
-+ goto unregister_4;
-+ }
-+
-+ err = platform_driver_register(&bcm2835_alsa6_driver);
-+ if (err) {
-+ printk("Error registering bcm2835_alsa6_driver %d .\n", err);
-+ goto unregister_5;
-+ }
-+
-+ err = platform_driver_register(&bcm2835_alsa7_driver);
-+ if (err) {
-+ printk("Error registering bcm2835_alsa7_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 +1,155 @@
-+/*****************************************************************************
-+* 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 <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;
-+ /* 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;
-+} bcm2835_chip_t;
-+
-+typedef struct bcm2835_alsa_stream {
-+ bcm2835_chip_t *chip;
-+ struct snd_pcm_substream *substream;
-+
-+ 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;
-+
-+ 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 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_
projects / openwrt / svn-archive / archive.git / blobdiff