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[4/4] staging: vt6655: Correct listen interval TBTT wake up

Message ID 1436457687-3113-4-git-send-email-tvboxspy@gmail.com (mailing list archive)
State Not Applicable
Delegated to: Kalle Valo
Headers show

Commit Message

Malcolm Priestley July 9, 2015, 4:01 p.m. UTC 
PSbIsNextTBTTWakeUp is called at beacon intervals.

The should listen to next beacon on count down of wake_up_count == 1.

This restores this back to vendors code but modified for mac80211.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
---
 drivers/staging/vt6655/device.h |  1 +
 drivers/staging/vt6655/power.c  | 16 ++++++++++++----
 2 files changed, 13 insertions(+), 4 deletions(-)
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Patch

diff --git a/drivers/staging/vt6655/device.h b/drivers/staging/vt6655/device.h
index 5cf1b33..6aebb49 100644
--- a/drivers/staging/vt6655/device.h
+++ b/drivers/staging/vt6655/device.h
@@ -403,6 +403,7 @@  struct vnt_private {
 	unsigned char abyEEPROM[EEP_MAX_CONTEXT_SIZE]; /* unsigned long alignment */
 
 	unsigned short wBeaconInterval;
+	u16 wake_up_count;
 
 	struct work_struct interrupt_work;
 
diff --git a/drivers/staging/vt6655/power.c b/drivers/staging/vt6655/power.c
index be3c4e9..06e6b9d 100644
--- a/drivers/staging/vt6655/power.c
+++ b/drivers/staging/vt6655/power.c
@@ -157,10 +157,18 @@  PSbIsNextTBTTWakeUp(
 	struct ieee80211_conf *conf = &hw->conf;
 	bool bWakeUp = false;
 
-	if (conf->listen_interval == 1) {
-		/* Turn on wake up to listen next beacon */
-		MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_LNBCN);
-		bWakeUp = true;
+	if (conf->listen_interval > 1) {
+		if (!pDevice->wake_up_count)
+			pDevice->wake_up_count = conf->listen_interval;
+
+		--pDevice->wake_up_count;
+
+		if (pDevice->wake_up_count == 1) {
+			/* Turn on wake up to listen next beacon */
+			MACvRegBitsOn(pDevice->PortOffset,
+				      MAC_REG_PSCTL, PSCTL_LNBCN);
+			bWakeUp = true;
+		}
 	}
 
 	return bWakeUp;