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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2020-09-01 23:05:55 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-09-03 16:14:39 +0530 |
| commit | de763fa888736f2ac2cb5bf7eac965e017310a7b (patch) | |
| tree | 6676c9d113f132d60b3c785cb42010d89b9df05c /drivers/soundwire | |
| parent | f748f34ef96848fc576002084d7ef9773011ed6a (diff) | |
| download | linux-de763fa888736f2ac2cb5bf7eac965e017310a7b.tar.gz linux-de763fa888736f2ac2cb5bf7eac965e017310a7b.tar.bz2 linux-de763fa888736f2ac2cb5bf7eac965e017310a7b.zip | |
soundwire: intel: pass link_mask information to each master
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>
Link: https://lore.kernel.org/r/20200901150556.19432-10-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire')
| -rw-r--r-- | drivers/soundwire/intel.h | 2 | ||||
| -rw-r--r-- | drivers/soundwire/intel_init.c | 1 |
2 files changed, 3 insertions, 0 deletions
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)); |