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soundwire: intel: introduce intel_shim_check_wake() helper 

Add new helper before code partitioning in order to avoid direct read
from specific register. No functionality change.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220919175721.354679-10-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2022-09-20 01:57:19 +08:00 committed by Vinod Koul
parent 0b59d4c947
commit 0f3c54c22a
1 changed files with 12 additions and 6 deletions
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18
drivers/soundwire/intel.c
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@ -344,6 +344,17 @@ static void intel_shim_init(struct sdw_intel *sdw)
usleep_range(10, 15);
}
static int intel_shim_check_wake(struct sdw_intel *sdw)
{
void __iomem *shim;
u16 wake_sts;
shim = sdw->link_res->shim;
wake_sts = intel_readw(shim, SDW_SHIM_WAKESTS);
return wake_sts & BIT(sdw->instance);
}
static void intel_shim_wake(struct sdw_intel *sdw, bool wake_enable)
{
void __iomem *shim = sdw->link_res->shim;
@ -1491,8 +1502,6 @@ int intel_link_process_wakeen_event(struct auxiliary_device *auxdev)
struct device *dev = &auxdev->dev;
struct sdw_intel *sdw;
struct sdw_bus *bus;
void __iomem *shim;
u16 wake_sts;
sdw = auxiliary_get_drvdata(auxdev);
bus = &sdw->cdns.bus;
@ -1503,10 +1512,7 @@ int intel_link_process_wakeen_event(struct auxiliary_device *auxdev)
return 0;
}
shim = sdw->link_res->shim;
wake_sts = intel_readw(shim, SDW_SHIM_WAKESTS);
if (!(wake_sts & BIT(sdw->instance)))
if (!intel_shim_check_wake(sdw))
return 0;
/* disable WAKEEN interrupt ASAP to prevent interrupt flood */