diff options
Diffstat (limited to 'drivers/soundwire/cadence_master.c')
| -rw-r--r-- | drivers/soundwire/cadence_master.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 05652e983539..f367670ea991 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -1378,6 +1378,31 @@ static void cdns_init_clock_ctrl(struct sdw_cdns *cdns) } /** + * sdw_cdns_soft_reset() - Cadence soft-reset + * @cdns: Cadence instance + */ +int sdw_cdns_soft_reset(struct sdw_cdns *cdns) +{ + int ret; + + cdns_updatel(cdns, CDNS_MCP_CONTROL, CDNS_MCP_CONTROL_SOFT_RST, + CDNS_MCP_CONTROL_SOFT_RST); + + ret = cdns_config_update(cdns); + if (ret < 0) { + dev_err(cdns->dev, "%s: config update failed\n", __func__); + return ret; + } + + ret = cdns_set_wait(cdns, CDNS_MCP_CONTROL, CDNS_MCP_CONTROL_SOFT_RST, 0); + if (ret < 0) + dev_err(cdns->dev, "%s: Soft Reset timed out\n", __func__); + + return ret; +} +EXPORT_SYMBOL(sdw_cdns_soft_reset); + +/** * sdw_cdns_init() - Cadence initialization * @cdns: Cadence instance */ @@ -1400,6 +1425,11 @@ int sdw_cdns_init(struct sdw_cdns *cdns) cdns_ip_updatel(cdns, CDNS_IP_MCP_CONTROL, CDNS_IP_MCP_CONTROL_CMD_ACCEPT, CDNS_IP_MCP_CONTROL_CMD_ACCEPT); + /* disable wakeup */ + cdns_ip_updatel(cdns, CDNS_IP_MCP_CONTROL, + CDNS_IP_MCP_CONTROL_BLOCK_WAKEUP, + 0); + /* Configure mcp config */ val = cdns_readl(cdns, CDNS_MCP_CONFIG); |