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Commit b0d94acd authored by Vinod Koul's avatar Vinod Koul Committed by Mark Brown
Browse files

ASoC: Intel: mrfld - add shim save restore 



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: default avatarSubhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f533a035

sound/soc/intel/sst/sst.c

+28 −0
Original line number Diff line number Diff line
@@ -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);