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soundwire: get mipi-sdw-bra-mode-max-data-per-frame property

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Get the mipi-sdw-bra-mode-max-data-per-frame property which indicates
the maximum data payload size (in bytes per frame excluding header,
CRC, and footer) for the BRA Mode.

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/20260728124639.1484973-5-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Bard Liao 2026-07-28 20:46:38 +08:00 committed by Vinod Koul
parent 110956d5fe
commit 5ccdf9ba59
2 changed files with 6 additions and 0 deletions
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3
drivers/soundwire/mipi_disco.c
View File

@ -474,6 +474,9 @@ int sdw_slave_read_prop(struct sdw_slave *slave)
device_property_read_u32(dev, "mipi-sdw-bra-mode-block-alignment",
&prop->bra_block_alignment);
device_property_read_u32(dev, "mipi-sdw-bra-mode-max-data-per-frame",
&prop->bra_max_data_per_frame);
prop->commit_register_supported = mipi_device_property_read_bool(dev,
"mipi-sdw-commit-register-supported");

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

@ -367,6 +367,8 @@ struct sdw_dpn_prop {
* @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.
* @bra_max_data_per_frame: If non-zero the maximum data payload size (in bytes per
* frame excluding header, CRC, and footer) for this BRA Mode
* @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.
@ -398,6 +400,7 @@ struct sdw_slave_prop {
u8 scp_int1_mask;
u8 lane_maps[SDW_MAX_LANES];
u32 bra_block_alignment;
u32 bra_max_data_per_frame;
bool clock_reg_supported;
bool use_domain_irq;
};