kernel/git/stable/linux-stable.git/drivers/soundwire/stream.c, branch master

Merge tag 'soundwire-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire

2026-08-24T19:16:16+00:00

Pull soundwire updates from Vinod Koul: - Intel dmi quirks ghost list handling for Asus Zenbook Duo, Asus ROG Zephyrus Duo and Asus Expertbook. Intel Peripheral bra_block_alignment handling - Cadence library BRA_NumBytes[8] support - Qualcomm SCP address paging, bus mclk_freq support. Increase of data ports to 17 and driver improvements * tag 'soundwire-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: soundwire: dmi-quirks: Disable ghost Realtek on Asus ROG Zephyrus Duo soundwire: stream: validate slave port properties soundwire: honor clock_reg_supported in the clock scaling check soundwire: qcom: set the bus mclk_freq property soundwire: dmi-quirks: Disable ghost Realtek on Asus Zenbook Duo soundwire: intel_ace2x: handle the max_data_per_frame property soundwire: get mipi-sdw-bra-mode-max-data-per-frame property soundwire: intel: handle Peripheral bra_block_alignment soundwire: Add bra_block_alignment property support soundwire: cadence_master: add BRA_NumBytes[8] support soundwire: bus.h: repair kernel-doc comments soundwire: intel_auxdevice: Add cs42l44 to wake_capable_list soundwire: qcom: add SCP address paging support soundwire: dmi-quirks: add a global ghost list soundwire: dmi-quirks: Disable ghost Realtek on Asus Expertbook soundwire: qcom: Allocate sruntime array dynamically soundwire: qcom: Fix port exhaustion check in stream_alloc_ports dt-bindings: soundwire: qcom: Increase max data ports to 17

soundwire: stream: validate slave port properties

2026-08-06T08:38:00+00:00

sdw_slave_port_config() validates that a port number is within the generic valid range, but does not verify that the Slave exposes the port for the requested stream direction. As a result, an in-range but unsupported port, or a valid port used in the wrong direction, can be accepted. Use sdw_get_slave_dpn_prop() to perform the direction-specific lookup and reject unsupported ports before storing the runtime configuration. Signed-off-by: Eric Wu Reviewed-by: Charles Keepax Reviewed-by: Bard Liao Link: https://patch.msgid.link/20260731123415.34070-1-kunjinkao.jp@gmail.com Signed-off-by: Vinod Koul

Replace by more specific (c files)

2026-07-03T05:38:17+00:00

Replace the #include of by the more specific where applicable. For most cases the include can be dropped completely, only a few drivers need one or two headers added. Acked-by: Danilo Krummrich Acked-by: Takashi Sakamoto Acked-by: Bjorn Helgaas Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König (The Capable Hub)

soundwire: don't program SDW_SCP_BUSCLOCK_SCALE on a unattached Peripheral

2026-05-07T07:33:39+00:00

The SDW_SCP_BUSCLOCK_SCALE register will be programmed when the Peripheral is attached. We can and should skip programming the SDW_SCP_BUSCLOCK_SCALE register when the Peripheral is unattached. Fixes: 645291cfe5e5 ("Soundwire: stream: program BUSCLOCK_SCALE") Signed-off-by: Bard Liao Reviewed-by: Simon Trimmer Reviewed-by: Péter Ujfalusi Reviewed-by: Ranjani Sridharan Link: https://patch.msgid.link/20260428084612.322701-1-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul

soundwire: stream: sdw_stream_remove_slave(): Check stream is valid

2026-05-03T16:27:43+00:00

In sdw_stream_remove_slave() check that stream is a valid pointer before passing it to functions that dereference it. Return 0 if the pointer is invalid. This is a convenience for callers. They can safely call this function during cleanup code without needing a pointer validity check duplicated at every call point. Signed-off-by: Richard Fitzgerald Reviewed-by: Pierre-Louis Bossart Link: https://patch.msgid.link/20260430143353.2702714-1-rf@opensource.cirrus.com Signed-off-by: Vinod Koul

soundwire: stream: Poll for DP prepare to avoid interrupt deadlock

2026-03-09T07:02:38+00:00

Replace the wait_for_completion_timeout() in sdw_prep_deprep_slave_ports() with a read_poll_timeout(). The original intent of the wait_for_completion_timeout() was to wait for the port prepare interrupt. But at this time the code is holding the bus_lock, which prevents the interrupt handler from running. Because of this, the port_prep completion will not be signaled and the wait_for_completion_timeout() will always timeout. Rewriting the code to avoid taking the bus_lock carries risks, and needs careful consideration of the consequences. It is safer and simpler to replace the completion with a simple register poll. As the code is holding the bus_lock, it is already blocking other activity so consuming control channel bandwidth for polling isn't really a concern. Signed-off-by: Richard Fitzgerald Link: https://patch.msgid.link/20260227111648.175548-1-rf@opensource.cirrus.com Signed-off-by: Vinod Koul

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

soundwire: stream: restore params when prepare ports fail

2025-07-21T05:13:20+00:00

The bus->params should be restored if the stream is failed to prepare. The issue exists since beginning. The Fixes tag just indicates the first commit that the commit can be applied to. Fixes: 17ed5bef49f4 ("soundwire: add missing newlines in dynamic debug logs") Signed-off-by: Bard Liao Reviewed-by: Péter Ujfalusi Reviewed-by: Ranjani Sridharan Link: https://lore.kernel.org/r/20250626060952.405996-1-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul

soundwire: bus: add send_async/wait APIs for BPT protocol

2025-03-10T07:01:18+00:00

Add definitions and helpers for the BPT/BRA protocol. Peripheral drivers (aka ASoC codec drivers) can use this API to send bulk data such as firmware or tables. The design intent is however NOT to directly use this API but to rely on an intermediate regmap layer. The API is only available when no other audio streams have been allocated, and only one BTP/BRA stream is allowed per link. To avoid the addition of yet another lock, the refcount tests are handled in the stream master_runtime alloc/free routines where the bus_lock is already held. Another benefit of this approach is that the same bus_lock is used to handle runtime and port linked lists, which reduces the potential for misaligned configurations. In addition to exclusion with audio streams, BPT transfers have a lot of overhead, specifically registers writes are needed to enable transport in DP0. Most DMAs don't handle too well very small data sets and they may have alignment limitations. The size and alignment requirements are for now not handled by the core but must be checked by platform-specific drivers. Signed-off-by: Pierre-Louis Bossart Signed-off-by: Bard Liao Reviewed-by: Péter Ujfalusi Reviewed-by: Liam Girdwood Reviewed-by: Ranjani Sridharan Tested-by: shumingf@realtek.com Link: https://lore.kernel.org/r/20250227140615.8147-8-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul