From: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
While the hardware exposes independent bits to power-up each master, the recommended sequence is to power all links or none. Idle links can still use the clock stop mode while the master is powered.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Signed-off-by: Bard Liao yung-chuan.liao@linux.intel.com --- drivers/soundwire/intel.h | 2 ++ drivers/soundwire/intel_init.c | 1 + 2 files changed, 3 insertions(+)
diff --git a/drivers/soundwire/intel.h b/drivers/soundwire/intel.h index 23daab9da329..76820d0b9deb 100644 --- a/drivers/soundwire/intel.h +++ b/drivers/soundwire/intel.h @@ -18,6 +18,7 @@ * @shim_lock: mutex to handle access to shared SHIM registers * @shim_mask: global pointer to check SHIM register initialization * @clock_stop_quirks: mask defining requested behavior on pm_suspend + * @link_mask: global mask needed for power-up/down sequences * @cdns: Cadence master descriptor * @list: used to walk-through all masters exposed by the same controller */ @@ -33,6 +34,7 @@ struct sdw_intel_link_res { struct mutex *shim_lock; /* protect shared registers */ u32 *shim_mask; u32 clock_stop_quirks; + u32 link_mask; struct sdw_cdns *cdns; struct list_head list; }; diff --git a/drivers/soundwire/intel_init.c b/drivers/soundwire/intel_init.c index add46d8fc85c..65d9b9bd2106 100644 --- a/drivers/soundwire/intel_init.c +++ b/drivers/soundwire/intel_init.c @@ -255,6 +255,7 @@ static struct sdw_intel_ctx link->clock_stop_quirks = res->clock_stop_quirks; link->shim_lock = &ctx->shim_lock; link->shim_mask = &ctx->shim_mask; + link->link_mask = link_mask;
memset(&pdevinfo, 0, sizeof(pdevinfo));