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When we set a source PDI, the target PDI parameters will be overridden by the source register values. The loopback streams can be independently enabled on each link. While the loopback source and target can be configured before any stream is active on each link, the loopback stream should only be prepared/triggered when the playback stream is prepared. Otherwise all registers might be programmed to their reset values and the loopback will not succeed. The SoundWire bus driver currently does not allow two streams to be triggered at the same time, so the playback will have to be started first, and later the loopback. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20210714032209.11284-11-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org> |
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| .. | ||
| bus_type.c | ||
| bus.c | ||
| bus.h | ||
| cadence_master.c | ||
| cadence_master.h | ||
| debugfs.c | ||
| dmi-quirks.c | ||
| generic_bandwidth_allocation.c | ||
| intel_init.c | ||
| intel.c | ||
| intel.h | ||
| Kconfig | ||
| Makefile | ||
| master.c | ||
| mipi_disco.c | ||
| qcom.c | ||
| slave.c | ||
| stream.c | ||
| sysfs_local.h | ||
| sysfs_slave_dpn.c | ||
| sysfs_slave.c | ||