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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2020-09-01 23:05:55 +0800
committerVinod Koul <vkoul@kernel.org>2020-09-03 16:14:39 +0530
commitde763fa888736f2ac2cb5bf7eac965e017310a7b (patch)
tree6676c9d113f132d60b3c785cb42010d89b9df05c /drivers/soundwire
parentf748f34ef96848fc576002084d7ef9773011ed6a (diff)
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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.h2
-rw-r--r--drivers/soundwire/intel_init.c1
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));