Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-01 08:31:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

ASoC: Intel: mrfld - add shim save restore

Browse Source 
In ACPI platform we need to save few registers of Shim on suspend and
restore them on resume, so add handlers to do this

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vinod Koul 2014-11-04 16:25:17 +05:30 committed by Mark Brown
parent f533a035e4
commit b0d94acd63
1 changed files with 28 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
sound/soc/intel/sst/sst.c
View File

@ -339,6 +339,34 @@ void sst_context_cleanup(struct intel_sst_drv *ctx)
}
EXPORT_SYMBOL_GPL(sst_context_cleanup);
static inline void sst_save_shim64(struct intel_sst_drv *ctx,
void __iomem *shim,
struct sst_shim_regs64 *shim_regs)
{
unsigned long irq_flags;
spin_lock_irqsave(&ctx->ipc_spin_lock, irq_flags);
shim_regs->imrx = sst_shim_read64(shim, SST_IMRX),
spin_unlock_irqrestore(&ctx->ipc_spin_lock, irq_flags);
}
static inline void sst_restore_shim64(struct intel_sst_drv *ctx,
void __iomem *shim,
struct sst_shim_regs64 *shim_regs)
{
unsigned long irq_flags;
/*
* we only need to restore IMRX for this case, rest will be
* initialize by FW or driver when firmware is loaded
*/
spin_lock_irqsave(&ctx->ipc_spin_lock, irq_flags);
sst_shim_write64(shim, SST_IMRX, shim_regs->imrx),
spin_unlock_irqrestore(&ctx->ipc_spin_lock, irq_flags);
}
void sst_configure_runtime_pm(struct intel_sst_drv *ctx)
{
pm_runtime_set_autosuspend_delay(ctx->dev, SST_SUSPEND_DELAY);