diff mbox series

[10/11] soundwire: intel: pass link_mask information to each master

Message ID 20200818024120.20721-11-yung-chuan.liao@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series soundwire: intel: add multi-link support | expand

Commit Message

Bard Liao Aug. 18, 2020, 2:41 a.m. UTC 
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 mbox series

Patch

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));