From 0d59423263be43f22cf8d597a6da4ec5f2d7f142 Mon Sep 17 00:00:00 2001 From: Scott Murray Date: Mon, 9 May 2022 17:53:46 -0400 Subject: meta-agl-bsp: update virtio-aarch64 Updates to get the virtio-aarch64 machine building after the upgrade to Yocto Project 4.0 / kirkstone: - Switch to the 5.15 linux-yocto kernel and drop the local backport of the 5.10 recipe. - Fix override syntax in the machine-specific linux-yocto bbappend. - Remove all the patches applied for the virtio and virtio-snd configuration fragments, they seem to have all been applied upstream. Bug-AGL: SPEC-4356 Signed-off-by: Scott Murray Change-Id: I96d4bb9b04d74280d1a3767fe17284fe6049fcba Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/27465 Reviewed-by: Vasyl Vavrychuk Tested-by: Jenkins Job builder account ci-image-build: Jenkins Job builder account ci-image-boot-test: Jenkins Job builder account --- .../0006-ALSA-virtio-PCM-substream-operators.patch | 525 --------------------- 1 file changed, 525 deletions(-) delete mode 100644 meta-agl-bsp/virtualization-layer/recipes-kernel/linux/linux-yocto/virtio-kmeta/bsp/virtio/virtio-snd/0006-ALSA-virtio-PCM-substream-operators.patch (limited to 'meta-agl-bsp/virtualization-layer/recipes-kernel/linux/linux-yocto/virtio-kmeta/bsp/virtio/virtio-snd/0006-ALSA-virtio-PCM-substream-operators.patch') diff --git a/meta-agl-bsp/virtualization-layer/recipes-kernel/linux/linux-yocto/virtio-kmeta/bsp/virtio/virtio-snd/0006-ALSA-virtio-PCM-substream-operators.patch b/meta-agl-bsp/virtualization-layer/recipes-kernel/linux/linux-yocto/virtio-kmeta/bsp/virtio/virtio-snd/0006-ALSA-virtio-PCM-substream-operators.patch deleted file mode 100644 index 9196b34e4..000000000 --- a/meta-agl-bsp/virtualization-layer/recipes-kernel/linux/linux-yocto/virtio-kmeta/bsp/virtio/virtio-snd/0006-ALSA-virtio-PCM-substream-operators.patch +++ /dev/null @@ -1,525 +0,0 @@ -From 93c313dc4fc78b077bb0911afe3a77ffa845ad58 Mon Sep 17 00:00:00 2001 -From: Anton Yakovlev -Date: Tue, 2 Mar 2021 17:47:06 +0100 -Subject: [PATCH] ALSA: virtio: PCM substream operators - -Introduce the operators required for the operation of substreams. - -Signed-off-by: Anton Yakovlev -Link: https://lore.kernel.org/r/20210302164709.3142702-7-anton.yakovlev@opensynergy.com -Signed-off-by: Takashi Iwai -Signed-off-by: Vasyl Vavrychuk ---- - sound/virtio/Makefile | 3 +- - sound/virtio/virtio_pcm.c | 2 + - sound/virtio/virtio_pcm.h | 5 + - sound/virtio/virtio_pcm_ops.c | 445 ++++++++++++++++++++++++++++++++++ - 4 files changed, 454 insertions(+), 1 deletion(-) - create mode 100644 sound/virtio/virtio_pcm_ops.c - -diff --git a/sound/virtio/Makefile b/sound/virtio/Makefile -index 626af3cc3ed7..34493226793f 100644 ---- a/sound/virtio/Makefile -+++ b/sound/virtio/Makefile -@@ -6,5 +6,6 @@ virtio_snd-objs := \ - virtio_card.o \ - virtio_ctl_msg.o \ - virtio_pcm.o \ -- virtio_pcm_msg.o -+ virtio_pcm_msg.o \ -+ virtio_pcm_ops.o - -diff --git a/sound/virtio/virtio_pcm.c b/sound/virtio/virtio_pcm.c -index 2dcd763efa29..c10d91fff2fb 100644 ---- a/sound/virtio/virtio_pcm.c -+++ b/sound/virtio/virtio_pcm.c -@@ -470,6 +470,8 @@ int virtsnd_pcm_build_devs(struct virtio_snd *snd) - - for (kss = ks->substream; kss; kss = kss->next) - vs->substreams[kss->number]->substream = kss; -+ -+ snd_pcm_set_ops(vpcm->pcm, i, &virtsnd_pcm_ops); - } - - snd_pcm_set_managed_buffer_all(vpcm->pcm, -diff --git a/sound/virtio/virtio_pcm.h b/sound/virtio/virtio_pcm.h -index 6722f1139666..efd0228746cf 100644 ---- a/sound/virtio/virtio_pcm.h -+++ b/sound/virtio/virtio_pcm.h -@@ -29,6 +29,8 @@ struct virtio_pcm_msg; - * @hw_ptr: Substream hardware pointer value in bytes [0 ... buffer_bytes). - * @xfer_enabled: Data transfer state (0 - off, 1 - on). - * @xfer_xrun: Data underflow/overflow state (0 - no xrun, 1 - xrun). -+ * @stopped: True if the substream is stopped and must be released on the device -+ * side. - * @msgs: Allocated I/O messages. - * @nmsgs: Number of allocated I/O messages. - * @msg_last_enqueued: Index of the last I/O message added to the virtqueue. -@@ -49,6 +51,7 @@ struct virtio_pcm_substream { - size_t hw_ptr; - bool xfer_enabled; - bool xfer_xrun; -+ bool stopped; - struct virtio_pcm_msg **msgs; - unsigned int nmsgs; - int msg_last_enqueued; -@@ -80,6 +83,8 @@ struct virtio_pcm { - struct virtio_pcm_stream streams[SNDRV_PCM_STREAM_LAST + 1]; - }; - -+extern const struct snd_pcm_ops virtsnd_pcm_ops; -+ - int virtsnd_pcm_validate(struct virtio_device *vdev); - - int virtsnd_pcm_parse_cfg(struct virtio_snd *snd); -diff --git a/sound/virtio/virtio_pcm_ops.c b/sound/virtio/virtio_pcm_ops.c -new file mode 100644 -index 000000000000..0682a2df6c8c ---- /dev/null -+++ b/sound/virtio/virtio_pcm_ops.c -@@ -0,0 +1,445 @@ -+// SPDX-License-Identifier: GPL-2.0+ -+/* -+ * virtio-snd: Virtio sound device -+ * Copyright (C) 2021 OpenSynergy GmbH -+ */ -+#include -+ -+#include "virtio_card.h" -+ -+/* -+ * I/O messages lifetime -+ * --------------------- -+ * -+ * Allocation: -+ * Messages are initially allocated in the ops->hw_params() after the size and -+ * number of periods have been successfully negotiated. -+ * -+ * Freeing: -+ * Messages can be safely freed after the queue has been successfully flushed -+ * (RELEASE command in the ops->sync_stop()) and the ops->hw_free() has been -+ * called. -+ * -+ * When the substream stops, the ops->sync_stop() waits until the device has -+ * completed all pending messages. This wait can be interrupted either by a -+ * signal or due to a timeout. In this case, the device can still access -+ * messages even after calling ops->hw_free(). It can also issue an interrupt, -+ * and the interrupt handler will also try to access message structures. -+ * -+ * Therefore, freeing of already allocated messages occurs: -+ * -+ * - in ops->hw_params(), if this operator was called several times in a row, -+ * or if ops->hw_free() failed to free messages previously; -+ * -+ * - in ops->hw_free(), if the queue has been successfully flushed; -+ * -+ * - in dev->release(). -+ */ -+ -+/* Map for converting ALSA format to VirtIO format. */ -+struct virtsnd_a2v_format { -+ snd_pcm_format_t alsa_bit; -+ unsigned int vio_bit; -+}; -+ -+static const struct virtsnd_a2v_format g_a2v_format_map[] = { -+ { SNDRV_PCM_FORMAT_IMA_ADPCM, VIRTIO_SND_PCM_FMT_IMA_ADPCM }, -+ { SNDRV_PCM_FORMAT_MU_LAW, VIRTIO_SND_PCM_FMT_MU_LAW }, -+ { SNDRV_PCM_FORMAT_A_LAW, VIRTIO_SND_PCM_FMT_A_LAW }, -+ { SNDRV_PCM_FORMAT_S8, VIRTIO_SND_PCM_FMT_S8 }, -+ { SNDRV_PCM_FORMAT_U8, VIRTIO_SND_PCM_FMT_U8 }, -+ { SNDRV_PCM_FORMAT_S16_LE, VIRTIO_SND_PCM_FMT_S16 }, -+ { SNDRV_PCM_FORMAT_U16_LE, VIRTIO_SND_PCM_FMT_U16 }, -+ { SNDRV_PCM_FORMAT_S18_3LE, VIRTIO_SND_PCM_FMT_S18_3 }, -+ { SNDRV_PCM_FORMAT_U18_3LE, VIRTIO_SND_PCM_FMT_U18_3 }, -+ { SNDRV_PCM_FORMAT_S20_3LE, VIRTIO_SND_PCM_FMT_S20_3 }, -+ { SNDRV_PCM_FORMAT_U20_3LE, VIRTIO_SND_PCM_FMT_U20_3 }, -+ { SNDRV_PCM_FORMAT_S24_3LE, VIRTIO_SND_PCM_FMT_S24_3 }, -+ { SNDRV_PCM_FORMAT_U24_3LE, VIRTIO_SND_PCM_FMT_U24_3 }, -+ { SNDRV_PCM_FORMAT_S20_LE, VIRTIO_SND_PCM_FMT_S20 }, -+ { SNDRV_PCM_FORMAT_U20_LE, VIRTIO_SND_PCM_FMT_U20 }, -+ { SNDRV_PCM_FORMAT_S24_LE, VIRTIO_SND_PCM_FMT_S24 }, -+ { SNDRV_PCM_FORMAT_U24_LE, VIRTIO_SND_PCM_FMT_U24 }, -+ { SNDRV_PCM_FORMAT_S32_LE, VIRTIO_SND_PCM_FMT_S32 }, -+ { SNDRV_PCM_FORMAT_U32_LE, VIRTIO_SND_PCM_FMT_U32 }, -+ { SNDRV_PCM_FORMAT_FLOAT_LE, VIRTIO_SND_PCM_FMT_FLOAT }, -+ { SNDRV_PCM_FORMAT_FLOAT64_LE, VIRTIO_SND_PCM_FMT_FLOAT64 }, -+ { SNDRV_PCM_FORMAT_DSD_U8, VIRTIO_SND_PCM_FMT_DSD_U8 }, -+ { SNDRV_PCM_FORMAT_DSD_U16_LE, VIRTIO_SND_PCM_FMT_DSD_U16 }, -+ { SNDRV_PCM_FORMAT_DSD_U32_LE, VIRTIO_SND_PCM_FMT_DSD_U32 }, -+ { SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE, -+ VIRTIO_SND_PCM_FMT_IEC958_SUBFRAME } -+}; -+ -+/* Map for converting ALSA frame rate to VirtIO frame rate. */ -+struct virtsnd_a2v_rate { -+ unsigned int rate; -+ unsigned int vio_bit; -+}; -+ -+static const struct virtsnd_a2v_rate g_a2v_rate_map[] = { -+ { 5512, VIRTIO_SND_PCM_RATE_5512 }, -+ { 8000, VIRTIO_SND_PCM_RATE_8000 }, -+ { 11025, VIRTIO_SND_PCM_RATE_11025 }, -+ { 16000, VIRTIO_SND_PCM_RATE_16000 }, -+ { 22050, VIRTIO_SND_PCM_RATE_22050 }, -+ { 32000, VIRTIO_SND_PCM_RATE_32000 }, -+ { 44100, VIRTIO_SND_PCM_RATE_44100 }, -+ { 48000, VIRTIO_SND_PCM_RATE_48000 }, -+ { 64000, VIRTIO_SND_PCM_RATE_64000 }, -+ { 88200, VIRTIO_SND_PCM_RATE_88200 }, -+ { 96000, VIRTIO_SND_PCM_RATE_96000 }, -+ { 176400, VIRTIO_SND_PCM_RATE_176400 }, -+ { 192000, VIRTIO_SND_PCM_RATE_192000 } -+}; -+ -+static int virtsnd_pcm_sync_stop(struct snd_pcm_substream *substream); -+ -+/** -+ * virtsnd_pcm_open() - Open the PCM substream. -+ * @substream: Kernel ALSA substream. -+ * -+ * Context: Process context. -+ * Return: 0 on success, -errno on failure. -+ */ -+static int virtsnd_pcm_open(struct snd_pcm_substream *substream) -+{ -+ struct virtio_pcm *vpcm = snd_pcm_substream_chip(substream); -+ struct virtio_pcm_stream *vs = &vpcm->streams[substream->stream]; -+ struct virtio_pcm_substream *vss = vs->substreams[substream->number]; -+ -+ substream->runtime->hw = vss->hw; -+ substream->private_data = vss; -+ -+ snd_pcm_hw_constraint_integer(substream->runtime, -+ SNDRV_PCM_HW_PARAM_PERIODS); -+ -+ vss->stopped = !!virtsnd_pcm_msg_pending_num(vss); -+ -+ /* -+ * If the substream has already been used, then the I/O queue may be in -+ * an invalid state. Just in case, we do a check and try to return the -+ * queue to its original state, if necessary. -+ */ -+ return virtsnd_pcm_sync_stop(substream); -+} -+ -+/** -+ * virtsnd_pcm_close() - Close the PCM substream. -+ * @substream: Kernel ALSA substream. -+ * -+ * Context: Process context. -+ * Return: 0. -+ */ -+static int virtsnd_pcm_close(struct snd_pcm_substream *substream) -+{ -+ return 0; -+} -+ -+/** -+ * virtsnd_pcm_dev_set_params() - Set the parameters of the PCM substream on -+ * the device side. -+ * @vss: VirtIO PCM substream. -+ * @buffer_bytes: Size of the hardware buffer. -+ * @period_bytes: Size of the hardware period. -+ * @channels: Selected number of channels. -+ * @format: Selected sample format (SNDRV_PCM_FORMAT_XXX). -+ * @rate: Selected frame rate. -+ * -+ * Context: Any context that permits to sleep. -+ * Return: 0 on success, -errno on failure. -+ */ -+static int virtsnd_pcm_dev_set_params(struct virtio_pcm_substream *vss, -+ unsigned int buffer_bytes, -+ unsigned int period_bytes, -+ unsigned int channels, -+ snd_pcm_format_t format, -+ unsigned int rate) -+{ -+ struct virtio_snd_msg *msg; -+ struct virtio_snd_pcm_set_params *request; -+ unsigned int i; -+ int vformat = -1; -+ int vrate = -1; -+ -+ for (i = 0; i < ARRAY_SIZE(g_a2v_format_map); ++i) -+ if (g_a2v_format_map[i].alsa_bit == format) { -+ vformat = g_a2v_format_map[i].vio_bit; -+ -+ break; -+ } -+ -+ for (i = 0; i < ARRAY_SIZE(g_a2v_rate_map); ++i) -+ if (g_a2v_rate_map[i].rate == rate) { -+ vrate = g_a2v_rate_map[i].vio_bit; -+ -+ break; -+ } -+ -+ if (vformat == -1 || vrate == -1) -+ return -EINVAL; -+ -+ msg = virtsnd_pcm_ctl_msg_alloc(vss, VIRTIO_SND_R_PCM_SET_PARAMS, -+ GFP_KERNEL); -+ if (!msg) -+ return -ENOMEM; -+ -+ request = virtsnd_ctl_msg_request(msg); -+ request->buffer_bytes = cpu_to_le32(buffer_bytes); -+ request->period_bytes = cpu_to_le32(period_bytes); -+ request->channels = channels; -+ request->format = vformat; -+ request->rate = vrate; -+ -+ if (vss->features & (1U << VIRTIO_SND_PCM_F_MSG_POLLING)) -+ request->features |= -+ cpu_to_le32(1U << VIRTIO_SND_PCM_F_MSG_POLLING); -+ -+ if (vss->features & (1U << VIRTIO_SND_PCM_F_EVT_XRUNS)) -+ request->features |= -+ cpu_to_le32(1U << VIRTIO_SND_PCM_F_EVT_XRUNS); -+ -+ return virtsnd_ctl_msg_send_sync(vss->snd, msg); -+} -+ -+/** -+ * virtsnd_pcm_hw_params() - Set the parameters of the PCM substream. -+ * @substream: Kernel ALSA substream. -+ * @hw_params: Hardware parameters. -+ * -+ * Context: Process context. -+ * Return: 0 on success, -errno on failure. -+ */ -+static int virtsnd_pcm_hw_params(struct snd_pcm_substream *substream, -+ struct snd_pcm_hw_params *hw_params) -+{ -+ struct virtio_pcm_substream *vss = snd_pcm_substream_chip(substream); -+ struct virtio_device *vdev = vss->snd->vdev; -+ int rc; -+ -+ if (virtsnd_pcm_msg_pending_num(vss)) { -+ dev_err(&vdev->dev, "SID %u: invalid I/O queue state\n", -+ vss->sid); -+ return -EBADFD; -+ } -+ -+ rc = virtsnd_pcm_dev_set_params(vss, params_buffer_bytes(hw_params), -+ params_period_bytes(hw_params), -+ params_channels(hw_params), -+ params_format(hw_params), -+ params_rate(hw_params)); -+ if (rc) -+ return rc; -+ -+ /* -+ * Free previously allocated messages if ops->hw_params() is called -+ * several times in a row, or if ops->hw_free() failed to free messages. -+ */ -+ virtsnd_pcm_msg_free(vss); -+ -+ return virtsnd_pcm_msg_alloc(vss, params_periods(hw_params), -+ params_period_bytes(hw_params)); -+} -+ -+/** -+ * virtsnd_pcm_hw_free() - Reset the parameters of the PCM substream. -+ * @substream: Kernel ALSA substream. -+ * -+ * Context: Process context. -+ * Return: 0 -+ */ -+static int virtsnd_pcm_hw_free(struct snd_pcm_substream *substream) -+{ -+ struct virtio_pcm_substream *vss = snd_pcm_substream_chip(substream); -+ -+ /* If the queue is flushed, we can safely free the messages here. */ -+ if (!virtsnd_pcm_msg_pending_num(vss)) -+ virtsnd_pcm_msg_free(vss); -+ -+ return 0; -+} -+ -+/** -+ * virtsnd_pcm_prepare() - Prepare the PCM substream. -+ * @substream: Kernel ALSA substream. -+ * -+ * Context: Process context. -+ * Return: 0 on success, -errno on failure. -+ */ -+static int virtsnd_pcm_prepare(struct snd_pcm_substream *substream) -+{ -+ struct virtio_pcm_substream *vss = snd_pcm_substream_chip(substream); -+ struct virtio_device *vdev = vss->snd->vdev; -+ struct virtio_snd_msg *msg; -+ -+ if (virtsnd_pcm_msg_pending_num(vss)) { -+ dev_err(&vdev->dev, "SID %u: invalid I/O queue state\n", -+ vss->sid); -+ return -EBADFD; -+ } -+ -+ vss->buffer_bytes = snd_pcm_lib_buffer_bytes(substream); -+ vss->hw_ptr = 0; -+ vss->xfer_xrun = false; -+ vss->msg_last_enqueued = -1; -+ vss->msg_count = 0; -+ -+ msg = virtsnd_pcm_ctl_msg_alloc(vss, VIRTIO_SND_R_PCM_PREPARE, -+ GFP_KERNEL); -+ if (!msg) -+ return -ENOMEM; -+ -+ return virtsnd_ctl_msg_send_sync(vss->snd, msg); -+} -+ -+/** -+ * virtsnd_pcm_trigger() - Process command for the PCM substream. -+ * @substream: Kernel ALSA substream. -+ * @command: Substream command (SNDRV_PCM_TRIGGER_XXX). -+ * -+ * Context: Any context. Takes and releases the VirtIO substream spinlock. -+ * May take and release the tx/rx queue spinlock. -+ * Return: 0 on success, -errno on failure. -+ */ -+static int virtsnd_pcm_trigger(struct snd_pcm_substream *substream, int command) -+{ -+ struct virtio_pcm_substream *vss = snd_pcm_substream_chip(substream); -+ struct virtio_snd *snd = vss->snd; -+ struct virtio_snd_queue *queue; -+ struct virtio_snd_msg *msg; -+ unsigned long flags; -+ int rc; -+ -+ switch (command) { -+ case SNDRV_PCM_TRIGGER_START: -+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: -+ queue = virtsnd_pcm_queue(vss); -+ -+ spin_lock_irqsave(&queue->lock, flags); -+ spin_lock(&vss->lock); -+ rc = virtsnd_pcm_msg_send(vss); -+ if (!rc) -+ vss->xfer_enabled = true; -+ spin_unlock(&vss->lock); -+ spin_unlock_irqrestore(&queue->lock, flags); -+ if (rc) -+ return rc; -+ -+ msg = virtsnd_pcm_ctl_msg_alloc(vss, VIRTIO_SND_R_PCM_START, -+ GFP_KERNEL); -+ if (!msg) { -+ spin_lock_irqsave(&vss->lock, flags); -+ vss->xfer_enabled = false; -+ spin_unlock_irqrestore(&vss->lock, flags); -+ -+ return -ENOMEM; -+ } -+ -+ return virtsnd_ctl_msg_send_sync(snd, msg); -+ case SNDRV_PCM_TRIGGER_STOP: -+ vss->stopped = true; -+ fallthrough; -+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH: -+ spin_lock_irqsave(&vss->lock, flags); -+ vss->xfer_enabled = false; -+ spin_unlock_irqrestore(&vss->lock, flags); -+ -+ msg = virtsnd_pcm_ctl_msg_alloc(vss, VIRTIO_SND_R_PCM_STOP, -+ GFP_KERNEL); -+ if (!msg) -+ return -ENOMEM; -+ -+ return virtsnd_ctl_msg_send_sync(snd, msg); -+ default: -+ return -EINVAL; -+ } -+} -+ -+/** -+ * virtsnd_pcm_sync_stop() - Synchronous PCM substream stop. -+ * @substream: Kernel ALSA substream. -+ * -+ * The function can be called both from the upper level or from the driver -+ * itself. -+ * -+ * Context: Process context. Takes and releases the VirtIO substream spinlock. -+ * Return: 0 on success, -errno on failure. -+ */ -+static int virtsnd_pcm_sync_stop(struct snd_pcm_substream *substream) -+{ -+ struct virtio_pcm_substream *vss = snd_pcm_substream_chip(substream); -+ struct virtio_snd *snd = vss->snd; -+ struct virtio_snd_msg *msg; -+ unsigned int js = msecs_to_jiffies(virtsnd_msg_timeout_ms); -+ int rc; -+ -+ cancel_work_sync(&vss->elapsed_period); -+ -+ if (!vss->stopped) -+ return 0; -+ -+ msg = virtsnd_pcm_ctl_msg_alloc(vss, VIRTIO_SND_R_PCM_RELEASE, -+ GFP_KERNEL); -+ if (!msg) -+ return -ENOMEM; -+ -+ rc = virtsnd_ctl_msg_send_sync(snd, msg); -+ if (rc) -+ return rc; -+ -+ /* -+ * The spec states that upon receipt of the RELEASE command "the device -+ * MUST complete all pending I/O messages for the specified stream ID". -+ * Thus, we consider the absence of I/O messages in the queue as an -+ * indication that the substream has been released. -+ */ -+ rc = wait_event_interruptible_timeout(vss->msg_empty, -+ !virtsnd_pcm_msg_pending_num(vss), -+ js); -+ if (rc <= 0) { -+ dev_warn(&snd->vdev->dev, "SID %u: failed to flush I/O queue\n", -+ vss->sid); -+ -+ return !rc ? -ETIMEDOUT : rc; -+ } -+ -+ vss->stopped = false; -+ -+ return 0; -+} -+ -+/** -+ * virtsnd_pcm_pointer() - Get the current hardware position for the PCM -+ * substream. -+ * @substream: Kernel ALSA substream. -+ * -+ * Context: Any context. Takes and releases the VirtIO substream spinlock. -+ * Return: Hardware position in frames inside [0 ... buffer_size) range. -+ */ -+static snd_pcm_uframes_t -+virtsnd_pcm_pointer(struct snd_pcm_substream *substream) -+{ -+ struct virtio_pcm_substream *vss = snd_pcm_substream_chip(substream); -+ snd_pcm_uframes_t hw_ptr = SNDRV_PCM_POS_XRUN; -+ unsigned long flags; -+ -+ spin_lock_irqsave(&vss->lock, flags); -+ if (!vss->xfer_xrun) -+ hw_ptr = bytes_to_frames(substream->runtime, vss->hw_ptr); -+ spin_unlock_irqrestore(&vss->lock, flags); -+ -+ return hw_ptr; -+} -+ -+/* PCM substream operators map. */ -+const struct snd_pcm_ops virtsnd_pcm_ops = { -+ .open = virtsnd_pcm_open, -+ .close = virtsnd_pcm_close, -+ .ioctl = snd_pcm_lib_ioctl, -+ .hw_params = virtsnd_pcm_hw_params, -+ .hw_free = virtsnd_pcm_hw_free, -+ .prepare = virtsnd_pcm_prepare, -+ .trigger = virtsnd_pcm_trigger, -+ .sync_stop = virtsnd_pcm_sync_stop, -+ .pointer = virtsnd_pcm_pointer, -+}; -- cgit 1.2.3-korg