Commit 4a7a603c authored by Pierre-Louis Bossart's avatar Pierre-Louis Bossart Committed by Vinod Koul
Browse files

soundwire: add flag to ignore all command/control for mockup devices 



SoundWire mockup devices don't take part in the command/control
protocol, so all commands will complete with -ENODATA or
Command_Ignored results. With a flag, we can suppress such errors in
the bus management and make it appear as if all read/writes succeed.

Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: default avatarRander Wang <rander.wang@intel.com>
Signed-off-by: default avatarBard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20210714032209.11284-7-yung-chuan.liao@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent e6645314

include/linux/soundwire/sdw.h

+3 −0
Original line number Diff line number Diff line
@@ -661,6 +661,8 @@ struct sdw_slave_ops { 
 * initialized

 * @first_interrupt_done: status flag tracking if the interrupt handling

 * for a Slave happens for the first time after enumeration

 * @is_mockup_device: status flag used to squelch errors in the command/control

 * protocol for SoundWire mockup devices

 */

struct sdw_slave {

	struct sdw_slave_id id;
@@ -683,6 +685,7 @@ struct sdw_slave { 
	struct completion initialization_complete;

	u32 unattach_request;

	bool first_interrupt_done;

	bool is_mockup_device;

};



#define dev_to_sdw_dev(_dev) container_of(_dev, struct sdw_slave, dev)

sound/soc/codecs/sdw-mockup.c

+2 −0
Original line number Diff line number Diff line
@@ -263,6 +263,8 @@ static int sdw_mockup_sdw_probe(struct sdw_slave *slave, 
	dev_set_drvdata(dev, sdw_mockup);

	sdw_mockup->slave = slave;



	slave->is_mockup_device = true;



	ret =  devm_snd_soc_register_component(dev,

					       &snd_soc_sdw_mockup_component,

					       sdw_mockup_dai,