kernel/sound/soc/sof/intel/hda-pcm.c, branch linux-rolling-stable

ASoC: SOF: Intel: hda-pcm: Place the constraint on period time instead of buffer time

2025-10-19T14:37:08Z

[ Upstream commit 45ad27d9a6f7c620d8bbc80be3bab1faf37dfa0a ] Instead of constraining the ALSA buffer time to be double of the firmware host buffer size, it is better to set it for the period time. This will implicitly constrain the buffer time to a safe value (num_periods is at least 2) and prohibits applications to set smaller period size than what will be covered by the initial DMA burst. Fixes: fe76d2e75a6d ("ASoC: SOF: Intel: hda-pcm: Use dsp_max_burst_size_in_ms to place constraint") Signed-off-by: Peter Ujfalusi Reviewed-by: Ranjani Sridharan Reviewed-by: Kai Vehmanen Reviewed-by: Bard Liao Link: https://patch.msgid.link/20251002135752.2430-4-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

ASoC: SOF: Intel: hda-pcm: Follow the pause_supported flag to drop PAUSE support

2024-12-13T13:10:30Z

If the stream's pause_supported flag is false then mask out the PAUSE support, so user space will be prevented to use it. Introduce a module parameter to ignore the pause_supported flag, named as force_pause_support to allow testing of the PAUSE feature. Signed-off-by: Peter Ujfalusi Reviewed-by: Pierre-Louis Bossart Reviewed-by: Bard Liao Reviewed-by: Kai Vehmanen Reviewed-by: Liam Girdwood Link: https://patch.msgid.link/20241213101123.27318-3-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown

module: Convert symbol namespace to string literal

2024-12-02T19:34:44Z

Clean up the existing export namespace code along the same lines of commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")") and for the same reason, it is not desired for the namespace argument to be a macro expansion itself. Scripted using git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file; do awk -i inplace ' /^#define EXPORT_SYMBOL_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /^#define MODULE_IMPORT_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /MODULE_IMPORT_NS/ { $0 = gensub(/MODULE_IMPORT_NS$([^)]*)$/, "MODULE_IMPORT_NS(\"\\1\")", "g"); } /EXPORT_SYMBOL_NS/ { if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)$([^,]+),/) { if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)$/ && $0 !~ /(EXPORT_SYMBOL_NS[^(]*)/ && $0 !~ /^my/) { getline line; gsub(/[[:space:]]*\\$/, ""); gsub(/[[:space:]]/, "", line); $0 = $0 " " line; } $0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)$([^,]+), ([^)]+)$/, "\\1(\\2, \"\\3\")", "g"); } } { print }' $file; done Requested-by: Masahiro Yamada Signed-off-by: Peter Zijlstra (Intel) Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc Acked-by: Greg KH Signed-off-by: Linus Torvalds

ASoC: SOF: Intel: hda-pcm: Limit the maximum number of periods by MAX_BDL_ENTRIES

2024-07-04T11:09:11Z

The HDaudio specification Section 3.6.2 limits the number of BDL entries to 256. Make sure we don't allow more periods than this normative value. Signed-off-by: Peter Ujfalusi Signed-off-by: Pierre-Louis Bossart Link: https://patch.msgid.link/20240704090106.371497-1-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown

ALSA/ASoC: Intel: clarify Copyright information

2024-05-07T01:37:51Z

Merge series from Pierre-Louis Bossart : This patchset does not change any functionality. It only clarifies the Copyright information in ASoC/HDAudio contributions, where an "All rights reserved" notice was mistakenly added in a number of files over the years, likely due to copy/paste. The Intel template never included this statement.

ASoC: SOF: Intel: clarify Copyright information

2024-05-06T14:59:35Z

For some reason a number of files included the "All rights reserved" statement. Good old copy-paste made sure this mistake proliferated. Remove the "All rights reserved" in all Intel-copyright to align with internal guidance. Reviewed-by: Cezary Rojewski Signed-off-by: Pierre-Louis Bossart Reviewed-by: Bard Liao Reviewed-by: Péter Ujfalusi Link: https://lore.kernel.org/r/20240503140359.259762-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown

ASoC: SOF: Intel: move hda.c to different module

2024-05-05T14:45:48Z

Now that most of the code moves are done, we can add a new module and the required EXPORT_SYMBOL definitions. No functionality change, just a new module added. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Bard Liao Reviewed-by: Ranjani Sridharan Link: https://lore.kernel.org/r/20240503135221.229202-8-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown

ASoC: SOF: Intel: hda: Compensate LLP in case it is not reset

2024-03-25T16:36:06Z

During pause/reset or stop/start the LLP counter is not reset, which will result broken delay reporting. Read the LLP value on STOP/PAUSE trigger and use it in LLP reading to normalize the LLP from the register. Cc: stable@vger.kernel.org # 6.8 Signed-off-by: Peter Ujfalusi Reviewed-by: Kai Vehmanen Reviewed-by: Pierre-Louis Bossart Link: https://msgid.link/r/20240321130814.4412-18-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown

ASoC: SOF: Intel: hda-pcm: Use dsp_max_burst_size_in_ms to place constraint

2024-03-25T16:35:53Z

If the PCM have the dsp_max_burst_size_in_ms set then place a constraint to limit the minimum buffer time to avoid xruns caused by DMA bursts spinning on the ALSA buffer. Cc: stable@vger.kernel.org # 6.8 Signed-off-by: Peter Ujfalusi Reviewed-by: Kai Vehmanen Reviewed-by: Pierre-Louis Bossart Link: https://msgid.link/r/20240321130814.4412-4-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown

ASoC: sof: intel: convert not to use asoc_xxx()

2023-09-25T12:16:45Z

ASoC is now unified asoc_xxx() into snd_soc_xxx(). This patch convert asoc_xxx() to snd_soc_xxx(). Signed-off-by: Kuninori Morimoto Link: https://lore.kernel.org/r/87sf7kp8um.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown