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soundwire: Add bra_block_alignment property support

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Add a property to struct sdw_slave_prop equivalent to the Disco
property "mipi-sdw-bra-mode-block-alignment".

The SoundWire Disco specification defines this as:

"The data payload size for this BRA Mode shall be an integer
multiple of the value of this Property."

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Co-developed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.dev>
Link: https://patch.msgid.link/20260728124639.1484973-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Richard Fitzgerald 2026-07-28 20:46:36 +08:00 committed by Vinod Koul
parent f74b589025
commit c0840f8be5
2 changed files with 6 additions and 0 deletions
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3
drivers/soundwire/mipi_disco.c
View File

@ -471,6 +471,9 @@ int sdw_slave_read_prop(struct sdw_slave *slave)
device_property_read_u32(dev, "mipi-sdw-sdca-interrupt-register-list",
&prop->sdca_interrupt_register_list);
device_property_read_u32(dev, "mipi-sdw-bra-mode-block-alignment",
&prop->bra_block_alignment);
prop->commit_register_supported = mipi_device_property_read_bool(dev,
"mipi-sdw-commit-register-supported");

3
include/linux/soundwire/sdw.h
View File

@ -365,6 +365,8 @@ struct sdw_dpn_prop {
* @commit_register_supported: is PCP_Commit register supported
* @scp_int1_mask: SCP_INT1_MASK desired settings
* @lane_maps: Lane mapping for the slave, only valid if lane_control_support is set
* @bra_block_alignment: If non-zero the length of data in a BRA frame must be
* a multiple of this number of bytes.
* @clock_reg_supported: the Peripheral implements the clock base and scale
* registers introduced with the SoundWire 1.2 specification. SDCA devices
* do not need to set this boolean property as the registers are required.
@ -395,6 +397,7 @@ struct sdw_slave_prop {
u8 commit_register_supported;
u8 scp_int1_mask;
u8 lane_maps[SDW_MAX_LANES];
u32 bra_block_alignment;
bool clock_reg_supported;
bool use_domain_irq;
};