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soundwire: mipi-disco: add new properties from 2.0 spec

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The DisCo for SoundWire 2.0 spec adds support for new
'mipi-sdw-sdca-interrupt-register-list' and
'mipi-sdw-commit-register-supported'.

This patch only adds the definitions and property reads, but the use
of these properties will come at some point in the future when needed.

Note a slight conceptual disconnect between the MIPI DisCo definition
of a boolean property and the Linux implementation. The latter only
checks the presence of the property to set its value to 'true',
whereas the MIPI definitions allow for a property with a 'false'
value. This patch uses the new introduced mipi_device_property_read_bool()
to handle it.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-14-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2024-10-03 15:06:49 +08:00 committed by Vinod Koul
parent 1ab88b57bb
commit 543bd28a3b
2 changed files with 12 additions and 1 deletions
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6
drivers/soundwire/mipi_disco.c
View File

@ -398,6 +398,12 @@ int sdw_slave_read_prop(struct sdw_slave *slave)
device_property_read_u32(dev, "mipi-sdw-sink-port-list",
&prop->sink_ports);
device_property_read_u32(dev, "mipi-sdw-sdca-interrupt-register-list",
&prop->sdca_interrupt_register_list);
prop->commit_register_supported = mipi_device_property_read_bool(dev,
"mipi-sdw-commit-register-supported");
/*
* Read dp0 properties - we don't rely on the 'mipi-sdw-dp-0-supported'
* property since the 'mipi-sdw-dp0-subproperties' property is logically

7
include/linux/soundwire/sdw.h
View File

@ -335,8 +335,11 @@ struct sdw_dpn_prop {
* @master_count: Number of Masters present on this Slave
* @source_ports: Bitmap identifying source ports
* @sink_ports: Bitmap identifying sink ports
* @scp_int1_mask: SCP_INT1_MASK desired settings
* @quirks: bitmask identifying deltas from the MIPI specification
* @sdca_interrupt_register_list: indicates which sets of SDCA interrupt status
* and masks are supported
* @commit_register_supported: is PCP_Commit register supported
* @scp_int1_mask: SCP_INT1_MASK desired settings
* @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.
@ -363,6 +366,8 @@ struct sdw_slave_prop {
u32 source_ports;
u32 sink_ports;
u32 quirks;
u32 sdca_interrupt_register_list;
u8 commit_register_supported;
u8 scp_int1_mask;
bool clock_reg_supported;
bool use_domain_irq;