From: Alex Crowther <alex.crowther@imgtec.com>
Date: Mon, 7 Mar 2011 13:14:06 +0000 (+0000)
Subject: gpu: pvr: disable sgx active power management while pvrtune is running
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e80ec76aaae3eb37552a99599fe0b0249e7bec28;p=sgx.git

gpu: pvr: disable sgx active power management while pvrtune is running

Disable sgx active power management while sgxPerfServer is running.
This enables pvrtune to run correctly without data loss.

Signed-off-by: Alex Crowther <alex.crowther@imgtec.com>
Signed-off-by: Imre Deak <imre.deak@nokia.com>
---

diff --git a/pvr/sgx_bridge_km.h b/pvr/sgx_bridge_km.h
index 2819a7e..fbd3379 100644
--- a/pvr/sgx_bridge_km.h
+++ b/pvr/sgx_bridge_km.h
@@ -106,4 +106,7 @@ enum PVRSRV_ERROR SGXGetInternalDevInfoKM(void *hDevCookie,
 
 int sgx_force_reset(void);
 
+IMG_BOOL isSGXPerfServerActive(void);
+void	   SGXPerfServerMonitor(u32 u32TimeStamp);
+
 #endif
diff --git a/pvr/sgxinit.c b/pvr/sgxinit.c
index f75989b..c551039 100644
--- a/pvr/sgxinit.c
+++ b/pvr/sgxinit.c
@@ -1785,6 +1785,38 @@ enum PVRSRV_ERROR SGXGetMiscInfoKM(struct PVRSRV_SGXDEV_INFO *psDevInfo,
 	}
 }
 
+
+
+static bool sgxps_active;
+static unsigned long sgxps_timeout;
+
+IMG_BOOL isSGXPerfServerActive(void)
+{
+	if (!sgxps_active)
+		return 0;
+
+	if (time_before_eq((unsigned long)OSClockus(), sgxps_timeout))
+		return 1;
+
+	sgxps_active = false;
+	PVR_DPF(DBGPRIV_WARNING, "pvr: perf server inactive\n");
+
+	return 0;
+}
+
+
+void SGXPerfServerMonitor(u32 u32TimeStamp)
+{
+	if (!sgxps_active) {
+		PVR_DPF(DBGPRIV_WARNING, "pvr: perf server active\n");
+		sgxps_active = true;
+	}
+
+	/* turn off after 1 second of inactivity */
+	sgxps_timeout = u32TimeStamp + 1000000;
+}
+
+
 enum PVRSRV_ERROR SGXReadDiffCountersKM(void *hDevHandle, u32 ui32Reg,
 				   u32 *pui32Old, IMG_BOOL bNew, u32 ui32New,
 				   u32 ui32NewReset, u32 ui32CountersReg,
@@ -1830,6 +1862,8 @@ enum PVRSRV_ERROR SGXReadDiffCountersKM(void *hDevHandle, u32 ui32Reg,
 		*pui32Time = sNew.ui32Time[0];
 		if (sNew.ui32Time[0] != psPrev->ui32Time[0] && bPowered) {
 
+			SGXPerfServerMonitor(*pui32Time);
+
 			*pui32Old =
 			    OSReadHWReg(psDevInfo->pvRegsBaseKM, ui32Reg);
 
diff --git a/pvr/sgxutils.c b/pvr/sgxutils.c
index b92d502..2e97811 100644
--- a/pvr/sgxutils.c
+++ b/pvr/sgxutils.c
@@ -70,6 +70,9 @@ void SGXTestActivePowerEvent(struct PVRSRV_DEVICE_NODE *psDeviceNode)
 	struct SGXMKIF_HOST_CTL __iomem *psSGXHostCtl = psDevInfo->psSGXHostCtl;
 	u32 l;
 
+	if (isSGXPerfServerActive())
+		return;
+
 	l = readl(&psSGXHostCtl->ui32InterruptFlags);
 	if (!(l & PVRSRV_USSE_EDM_INTERRUPT_ACTIVE_POWER))
 		return;