kernel.git/drivers/soundwire/bus.c, branch linux-4.19.y

soundwire: bus: Fix device found flag correctly

2021-05-22T08:59:29Z

[ Upstream commit f03690f4f6992225d05dbd1171212e5be5a370dd ] found flag is used to indicate SoundWire devices that are both enumerated on the bus and available in the device list. However this flag is not reset correctly after one iteration, This could miss some of the devices that are enumerated on the bus but not in device list. So reset this correctly to fix this issue! Fixes: d52d7a1be02c ("soundwire: Add Slave status handling helpers") Signed-off-by: Srinivas Kandagatla Reviewed-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20210309104816.20350-1-srinivas.kandagatla@linaro.org Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin

soundwire: Initialize completion for defer messages

2019-11-20T17:45:22Z

[ Upstream commit a306a0e4a5326269b6c78d136407f08433ab5ece ] Deferred messages are async messages used to synchronize transitions mostly while doing a bank switch on multi links. On successful transitions these messages are marked complete and thereby confirming that all the buses performed bank switch successfully. So, initialize the completion structure for the same. Signed-off-by: Sanyog Kale Signed-off-by: Shreyas NC Acked-by: Pierre-Louis Bossart Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin

soundwire: bus: set initial value to port_status

2019-11-12T18:20:38Z

commit f1fac63af678b2fc1044ca71fedf1f2ae8bf7c3b upstream. port_status[port_num] are assigned for each port_num in some if conditions. So some of the port_status may not be initialized. Signed-off-by: Bard Liao Reviewed-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20190829181135.16049-1-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman

soundwire: Add stream configuration APIs

2018-05-11T16:17:06Z

Add APIs for prepare, enable, disable and de-prepare stream. Signed-off-by: Sanyog Kale Signed-off-by: Shreyas NC Signed-off-by: Vinod Koul

soundwire: Add bank switch routine

2018-05-11T16:17:05Z

SoundWire supports two registers banks. So, program the alternate bank with new configuration and then performs bank switch. Signed-off-by: Sanyog Kale Signed-off-by: Shreyas NC Signed-off-by: Vinod Koul

soundwire: Add helpers for ports operations

2018-05-11T16:17:05Z

Add helpers to configure, prepare, enable, disable and de-prepare ports. Signed-off-by: Sanyog Kale Signed-off-by: Shreyas NC Signed-off-by: Vinod Koul

soundwire: Add support for SoundWire stream management

2018-05-11T16:17:03Z

This patch adds APIs and relevant stream data structures for initialization and release of stream. Signed-off-by: Hardik T Shah Signed-off-by: Sanyog Kale Signed-off-by: Shreyas NC Signed-off-by: Vinod Koul

soundwire: Fix a signedness bug

2018-01-22T15:45:26Z

"ret" is an int and "buf" is a u8. sdw_read() returns negative error codes which are truncated to the u8, 0-255 range before being stored as an int. It means that "ret" can't be less than zero. Fixes: b0a9c37b0178 ("soundwire: Add slave status handling") Signed-off-by: Dan Carpenter Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman

soundwire: Fix incorrect return value check

2018-01-09T16:01:16Z

pm_runtime_get_sync will return negative values for error and 0 or 1 for success. Update the error check accordingly. Signed-off-by: Shreyas NC Reported-by: Dan Carpenter Fixes: 9d715fa005eb: ("soundwire: Add IO transfer") Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman

soundwire: Fix typo in return value check of sdw_read()

2018-01-08T16:53:21Z

Fix the typo, 'status' should be instead of 'status2'. Fixes: b0a9c37b0178 ("soundwire: Add slave status handling") Signed-off-by: Wei Yongjun Acked-by: Pierre-Louis Bossart Acked-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman