diff options
Diffstat (limited to 'drivers/soundwire/cadence_master.c')
| -rw-r--r-- | drivers/soundwire/cadence_master.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 39502bc75712..58686ae50bbf 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -283,6 +283,29 @@ static int cdns_config_update(struct sdw_cdns *cdns) return ret; } +/** + * sdw_cdns_config_update() - Update configurations + * @cdns: Cadence instance + */ +void sdw_cdns_config_update(struct sdw_cdns *cdns) +{ + /* commit changes */ + cdns_writel(cdns, CDNS_MCP_CONFIG_UPDATE, CDNS_MCP_CONFIG_UPDATE_BIT); +} +EXPORT_SYMBOL(sdw_cdns_config_update); + +/** + * sdw_cdns_config_update_set_wait() - wait until configuration update bit is self-cleared + * @cdns: Cadence instance + */ +int sdw_cdns_config_update_set_wait(struct sdw_cdns *cdns) +{ + /* the hardware recommendation is to wait at least 300us */ + return cdns_set_wait(cdns, CDNS_MCP_CONFIG_UPDATE, + CDNS_MCP_CONFIG_UPDATE_BIT, 0); +} +EXPORT_SYMBOL(sdw_cdns_config_update_set_wait); + /* * debugfs */ @@ -1116,13 +1139,7 @@ int sdw_cdns_exit_reset(struct sdw_cdns *cdns) CDNS_MCP_CONTROL_HW_RST); /* commit changes */ - cdns_updatel(cdns, CDNS_MCP_CONFIG_UPDATE, - CDNS_MCP_CONFIG_UPDATE_BIT, - CDNS_MCP_CONFIG_UPDATE_BIT); - - /* don't wait here */ - return 0; - + return cdns_config_update(cdns); } EXPORT_SYMBOL(sdw_cdns_exit_reset); |