From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- sound/soc/sof/stream-ipc.c | 131 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 131 insertions(+) create mode 100644 sound/soc/sof/stream-ipc.c (limited to 'sound/soc/sof/stream-ipc.c') diff --git a/sound/soc/sof/stream-ipc.c b/sound/soc/sof/stream-ipc.c new file mode 100644 index 000000000..78758cf58 --- /dev/null +++ b/sound/soc/sof/stream-ipc.c @@ -0,0 +1,131 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) +// +// This file is provided under a dual BSD/GPLv2 license. When using or +// redistributing this file, you may do so under either license. +// +// Copyright(c) 2019 Intel Corporation +// +// Authors: Guennadi Liakhovetski + +/* Generic SOF IPC code */ + +#include +#include +#include +#include + +#include +#include + +#include "ops.h" +#include "sof-priv.h" +#include "sof-audio.h" + +struct sof_stream { + size_t posn_offset; +}; + +/* Mailbox-based Generic IPC implementation */ +int sof_ipc_msg_data(struct snd_sof_dev *sdev, + struct snd_sof_pcm_stream *sps, + void *p, size_t sz) +{ + if (!sps || !sdev->stream_box.size) { + snd_sof_dsp_mailbox_read(sdev, sdev->dsp_box.offset, p, sz); + } else { + size_t posn_offset; + + if (sps->substream) { + struct sof_stream *stream = sps->substream->runtime->private_data; + + /* The stream might already be closed */ + if (!stream) + return -ESTRPIPE; + + posn_offset = stream->posn_offset; + } else if (sps->cstream) { + + struct sof_compr_stream *sstream = sps->cstream->runtime->private_data; + + if (!sstream) + return -ESTRPIPE; + + posn_offset = sstream->posn_offset; + + } else { + dev_err(sdev->dev, "%s: No stream opened\n", __func__); + return -EINVAL; + } + + snd_sof_dsp_mailbox_read(sdev, posn_offset, p, sz); + } + + return 0; +} +EXPORT_SYMBOL(sof_ipc_msg_data); + +int sof_set_stream_data_offset(struct snd_sof_dev *sdev, + struct snd_sof_pcm_stream *sps, + size_t posn_offset) +{ + /* check if offset is overflow or it is not aligned */ + if (posn_offset > sdev->stream_box.size || + posn_offset % sizeof(struct sof_ipc_stream_posn) != 0) + return -EINVAL; + + posn_offset += sdev->stream_box.offset; + + if (sps->substream) { + struct sof_stream *stream = sps->substream->runtime->private_data; + + stream->posn_offset = posn_offset; + dev_dbg(sdev->dev, "pcm: stream dir %d, posn mailbox offset is %zu", + sps->substream->stream, posn_offset); + } else if (sps->cstream) { + struct sof_compr_stream *sstream = sps->cstream->runtime->private_data; + + sstream->posn_offset = posn_offset; + dev_dbg(sdev->dev, "compr: stream dir %d, posn mailbox offset is %zu", + sps->cstream->direction, posn_offset); + } else { + dev_err(sdev->dev, "No stream opened"); + return -EINVAL; + } + + return 0; +} +EXPORT_SYMBOL(sof_set_stream_data_offset); + +int sof_stream_pcm_open(struct snd_sof_dev *sdev, + struct snd_pcm_substream *substream) +{ + struct sof_stream *stream = kmalloc_obj(*stream); + + if (!stream) + return -ENOMEM; + + /* binding pcm substream to hda stream */ + substream->runtime->private_data = stream; + + /* align to DMA minimum transfer size */ + snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4); + + /* avoid circular buffer wrap in middle of period */ + snd_pcm_hw_constraint_integer(substream->runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + + return 0; +} +EXPORT_SYMBOL(sof_stream_pcm_open); + +int sof_stream_pcm_close(struct snd_sof_dev *sdev, + struct snd_pcm_substream *substream) +{ + struct sof_stream *stream = substream->runtime->private_data; + + substream->runtime->private_data = NULL; + kfree(stream); + + return 0; +} +EXPORT_SYMBOL(sof_stream_pcm_close); -- cgit v1.3.1