From patchwork Tue Jun 7 13:09:58 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Berg X-Patchwork-Id: 9161157 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1F83460571 for ; Tue, 7 Jun 2016 13:10:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E99C622A2A for ; Tue, 7 Jun 2016 13:10:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DCDB4281D2; Tue, 7 Jun 2016 13:10:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9D41022A2A for ; Tue, 7 Jun 2016 13:10:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932626AbcFGNK1 (ORCPT ); Tue, 7 Jun 2016 09:10:27 -0400 Received: from s3.sipsolutions.net ([5.9.151.49]:45933 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932589AbcFGNKK (ORCPT ); Tue, 7 Jun 2016 09:10:10 -0400 Received: by sipsolutions.net with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.87) (envelope-from ) id 1bAGlj-0007aI-TW; Tue, 07 Jun 2016 15:10:08 +0200 From: Benjamin Berg To: linux-wireless@vger.kernel.org Cc: Kalle Valo , Felix Fietkau , ath9k-devel@lists.ath9k.org, Benjamin Berg Subject: [PATCH 3/6] ath9k: Use tsf offset helper in ath9k_hw_reset Date: Tue, 7 Jun 2016 15:09:58 +0200 Message-Id: <1465305001-26067-3-git-send-email-benjamin@sipsolutions.net> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1465305001-26067-1-git-send-email-benjamin@sipsolutions.net> References: <1465305001-26067-1-git-send-email-benjamin@sipsolutions.net> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Benjamin Berg Not much of a change. Only small fix is that we don't assume that exactly 1.5ms have passed for the second AR91xx SoC TSF setting. Signed-off-by: Benjamin Berg --- drivers/net/wireless/ath/ath9k/hw.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 8b2895f..1c27e2d 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -1832,8 +1832,9 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan, u32 saveLedState; u32 saveDefAntenna; u32 macStaId1; + struct timespec tsf_ts; + u32 tsf_offset; u64 tsf = 0; - s64 usec = 0; int r; bool start_mci_reset = false; bool save_fullsleep = ah->chip_fullsleep; @@ -1877,8 +1878,8 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan, macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B; /* Save TSF before chip reset, a cold reset clears it */ + getrawmonotonic(&tsf_ts); tsf = ath9k_hw_gettsf64(ah); - usec = ktime_to_us(ktime_get_raw()); saveLedState = REG_READ(ah, AR_CFG_LED) & (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL | @@ -1911,8 +1912,8 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan, } /* Restore TSF */ - usec = ktime_to_us(ktime_get_raw()) - usec; - ath9k_hw_settsf64(ah, tsf + usec); + tsf_offset = ath9k_hw_get_tsf_offset(&tsf_ts, NULL); + ath9k_hw_settsf64(ah, tsf + tsf_offset); if (AR_SREV_9280_20_OR_LATER(ah)) REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE); @@ -1932,12 +1933,11 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan, /* * Some AR91xx SoC devices frequently fail to accept TSF writes * right after the chip reset. When that happens, write a new - * value after the initvals have been applied, with an offset - * based on measured time difference + * value after the initvals have been applied. */ if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) { - tsf += 1500; - ath9k_hw_settsf64(ah, tsf); + tsf_offset = ath9k_hw_get_tsf_offset(&tsf_ts, NULL); + ath9k_hw_settsf64(ah, tsf + tsf_offset); } ath9k_hw_init_mfp(ah);