RE: [PATCH 1/2] DSPBRIDGE: Cleanup SleepDSP

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>From: Ameya Palande [mailto:ameya.palande@xxxxxxxxx]
>Subject: [PATCH 1/2] DSPBRIDGE: Cleanup SleepDSP
>
>Signed-off-by: Ameya Palande <ameya.palande@xxxxxxxxx>

[omar ramirez: avoid saving mailbox settings while setting a contraint]

Acked-by: Omar Ramirez Luna <omar.ramirez@xxxxxx>

>---
> drivers/dsp/bridge/wmd/tiomap3430_pwr.c |   33 ++++++++++++++++++------------
> 1 files changed, 20 insertions(+), 13 deletions(-)
>
>diff --git a/drivers/dsp/bridge/wmd/tiomap3430_pwr.c b/drivers/dsp/bridge/wmd/tiomap3430_pwr.c
>index b81df8c..7aa58d1 100644
>--- a/drivers/dsp/bridge/wmd/tiomap3430_pwr.c
>+++ b/drivers/dsp/bridge/wmd/tiomap3430_pwr.c
>@@ -204,20 +204,21 @@ DSP_STATUS SleepDSP(struct WMD_DEV_CONTEXT *pDevContext, IN u32 dwCmd,
> 	struct CFG_HOSTRES resources;
> 	struct DEH_MGR *hDehMgr;
> 	u16 usCount = TIHELEN_ACKTIMEOUT;
>-	enum HW_PwrState_t pwrState;
>-	enum HW_PwrState_t targetPwrState;
>+	enum HW_PwrState_t pwrState, targetPwrState;
>
>-	status = CFG_GetHostResources(
>-		 (struct CFG_DEVNODE *)DRV_GetFirstDevExtension(), &resources);
>-	if (DSP_FAILED(status))
>-		return status;
> 	DBG_Trace(DBG_LEVEL7, "SleepDSP- Enter function \n");
>
>-		/* next, check if sleep code is valid... */
>+	/* Check if sleep code is valid */
> 	if ((dwCmd != PWR_DEEPSLEEP) && (dwCmd != PWR_EMERGENCYDEEPSLEEP)) {
> 		DBG_Trace(DBG_LEVEL7, "SleepDSP- Illegal sleep command\n");
> 		return DSP_EINVALIDARG;
> 	}
>+
>+	status = CFG_GetHostResources(
>+		 (struct CFG_DEVNODE *)DRV_GetFirstDevExtension(), &resources);
>+	if (DSP_FAILED(status))
>+		return status;
>+
> 	switch (pDevContext->dwBrdState) {
> 	case BRD_RUNNING:
> 		status = HW_MBOX_saveSettings(resources.dwMboxBase);
>@@ -245,7 +246,6 @@ DSP_STATUS SleepDSP(struct WMD_DEV_CONTEXT *pDevContext, IN u32 dwCmd,
> 		break;
> 	case BRD_HIBERNATION:
> 	case BRD_DSP_HIBERNATION:
>-		status = HW_MBOX_saveSettings(resources.dwMboxBase);
> 		/* Already in Hibernation, so just return */
> 		DBG_Trace(DBG_LEVEL7, "SleepDSP- DSP already in "
> 			 "hibernation\n");
>@@ -259,17 +259,22 @@ DSP_STATUS SleepDSP(struct WMD_DEV_CONTEXT *pDevContext, IN u32 dwCmd,
> 			 "SleepDSP- Bridge in Illegal state\n");
> 			return DSP_EFAIL;
> 	}
>+
> 	/* Get the PRCM DSP power domain status */
> 	HW_PWR_IVA2StateGet(resources.dwPrmBase, HW_PWR_DOMAIN_DSP,
>-			    &pwrState);
>-	/* Wait for DSP to move into Standby state,  how much time
>-	 * should we wait?*/
>+			&pwrState);
>+
>+	/*
>+	 * Wait for DSP to move into Standby state,  how much time
>+	 * should we wait?
>+	 */
> 	while ((pwrState != targetPwrState) && --usCount) {
> 		udelay(500);
> 		HW_PWR_IVA2StateGet(resources.dwPrmBase, HW_PWR_DOMAIN_DSP,
> 				    &pwrState);
> 	}
>-	if (usCount == 0) {
>+
>+	if (!usCount) {
> 		DBG_Trace(DBG_LEVEL7, "SleepDSP: Timed out Waiting for DSP"
> 			 " STANDBY %x \n", pwrState);
> 		DEV_GetDehMgr(pDevContext->hDevObject, &hDehMgr);
>@@ -278,17 +283,19 @@ DSP_STATUS SleepDSP(struct WMD_DEV_CONTEXT *pDevContext, IN u32 dwCmd,
> 	} else {
> 		DBG_Trace(DBG_LEVEL7, "SleepDSP: DSP STANDBY Pwr state %x \n",
> 			 pwrState);
>+
> 		/* Update the Bridger Driver state */
> 		if (enable_off_mode)
> 			pDevContext->dwBrdState = BRD_HIBERNATION;
> 		else
> 			pDevContext->dwBrdState = BRD_RETENTION;
>+
> 		/* Turn off DSP Peripheral clocks  */
> 		status = DSP_PeripheralClocks_Disable(pDevContext, NULL);
> 		if (DSP_FAILED(status))
> 			DBG_Trace(DBG_LEVEL7, "SleepDSP- FAILED\n");
> 	}
>-#endif
>+#endif /* CONFIG_PM */
> 	return status;
> }
>
>--
>1.6.2.4
>

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