From patchwork Thu Jun 23 03:50:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 584539 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7210DC433EF for ; Thu, 23 Jun 2022 04:42:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231766AbiFWEmz (ORCPT ); Thu, 23 Jun 2022 00:42:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243708AbiFWDvF (ORCPT ); Wed, 22 Jun 2022 23:51:05 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F7013E5FD; Wed, 22 Jun 2022 20:51:03 -0700 (PDT) X-UUID: 8605db21ed5b4b0c9e540786b06d053a-20220623 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:336c56d7-6a73-424c-9d4b-cff73a00d4cb, OB:0, LO B:0,IP:0,URL:5,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:0 X-CID-META: VersionHash:b14ad71, CLOUDID:a43ed02d-1756-4fa3-be7f-474a6e4be921, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:1,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: 8605db21ed5b4b0c9e540786b06d053a-20220623 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1802570432; Thu, 23 Jun 2022 11:50:55 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 23 Jun 2022 11:50:54 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 23 Jun 2022 11:50:54 +0800 From: Stanley Chu To: , , , , , , CC: , , , , , , , , , , , , Subject: [PATCH v2 4/8] scsi: ufs-mediatek: Add stage information for ref-clk control Date: Thu, 23 Jun 2022 11:50:48 +0800 Message-ID: <20220623035052.18802-5-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220623035052.18802-1-stanley.chu@mediatek.com> References: <20220623035052.18802-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Peter Wang Add "PRE_CHANGE" and "POST_CHANGE" information for ref-clk control to precisely configure the low-power state of the parent of ref-clk. Reviewed-by: Stanley Chu Signed-off-by: Peter Wang Signed-off-by: Stanley Chu --- drivers/ufs/host/ufs-mediatek.c | 9 +++++---- drivers/ufs/host/ufs-mediatek.h | 4 ++-- 2 files changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index d6b2734e7f81..8184e871ff8e 100755 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -244,8 +244,9 @@ static int ufs_mtk_setup_ref_clk(struct ufs_hba *hba, bool on) if (host->ref_clk_enabled == on) return 0; + ufs_mtk_ref_clk_notify(on, PRE_CHANGE, res); + if (on) { - ufs_mtk_ref_clk_notify(on, res); ufshcd_writel(hba, REFCLK_REQUEST, REG_UFS_REFCLK_CTRL); } else { ufshcd_delay_us(host->ref_clk_gating_wait_us, 10); @@ -267,7 +268,7 @@ static int ufs_mtk_setup_ref_clk(struct ufs_hba *hba, bool on) dev_err(hba->dev, "missing ack of refclk req, reg: 0x%x\n", value); - ufs_mtk_ref_clk_notify(host->ref_clk_enabled, res); + ufs_mtk_ref_clk_notify(host->ref_clk_enabled, POST_CHANGE, res); return -ETIMEDOUT; @@ -275,8 +276,8 @@ static int ufs_mtk_setup_ref_clk(struct ufs_hba *hba, bool on) host->ref_clk_enabled = on; if (on) ufshcd_delay_us(host->ref_clk_ungating_wait_us, 10); - else - ufs_mtk_ref_clk_notify(on, res); + + ufs_mtk_ref_clk_notify(on, POST_CHANGE, res); return 0; } diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h index f5c1c643dd52..c12ceb4d941f 100755 --- a/drivers/ufs/host/ufs-mediatek.h +++ b/drivers/ufs/host/ufs-mediatek.h @@ -189,8 +189,8 @@ static void _ufs_mtk_smc(struct ufs_mtk_smc_arg s) #define ufs_mtk_crypto_ctrl(res, enable) \ ufs_mtk_smc(UFS_MTK_SIP_CRYPTO_CTRL, &(res), enable) -#define ufs_mtk_ref_clk_notify(on, res) \ - ufs_mtk_smc(UFS_MTK_SIP_REF_CLK_NOTIFICATION, &(res), on) +#define ufs_mtk_ref_clk_notify(on, stage, res) \ + ufs_mtk_smc(UFS_MTK_SIP_REF_CLK_NOTIFICATION, &(res), on, stage) #define ufs_mtk_device_reset_ctrl(high, res) \ ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, &(res), high)