From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B5FDC43387 for ; Mon, 17 Dec 2018 03:16:29 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5396C206BA for ; Mon, 17 Dec 2018 03:16:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="h5rw//zV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5396C206BA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Date:To:From:Subject:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=20o+PPeyAmtvChEWHIaKnVKFrvyC+42H1H2o1Qc+jg8=; b=h5rw//zV15unhB Fd8H7CUr0ozHSnxmd+u8jAa7Z1eBQ2OjCC5XlfOCqXnO1BSWbbPILEJRQt0Z+uZU2UznTdwIQXp8E rfYXNsdt8wcyDl/mtYSRZcv0SrPvzLjECQ1MC6AqxcwzrtovFG/urYNcRvCRYdFePJHFIW0wqeZzq gvNczQZmuQQ0mxH1f4LCgyC5xmlW+v1Ad/sWsxCVPvwtDrs1ibyJBnM4tGWhgup7altauXvAR5vpk ISeUJujvLy3Hd3mWace5Dtm5vhJ4GfPN2AzGe2b1GrecByNyWXiRdT5hSuJzHciCbGCKzVifmS0tF KiCEzbiS3iX3RcMmWYQA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gYjON-0001zq-Of; Mon, 17 Dec 2018 03:16:27 +0000 Received: from [1.203.163.81] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gYjOI-0001xF-Kz; Mon, 17 Dec 2018 03:16:25 +0000 X-UUID: ef6fe58ba54b4183b52781f5e27b3d2b-20181217 X-UUID: ef6fe58ba54b4183b52781f5e27b3d2b-20181217 Received: from mtkcas34.mediatek.inc [(172.27.4.250)] by mailgw02.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 333517610; Mon, 17 Dec 2018 11:15:07 +0800 Received: from MTKCAS36.mediatek.inc (172.27.4.186) by MTKMBS31N1.mediatek.inc (172.27.4.69) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 17 Dec 2018 11:15:05 +0800 Received: from [10.17.3.153] (10.17.3.153) by MTKCAS36.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 17 Dec 2018 11:15:04 +0800 Message-ID: <1545016504.29293.10.camel@mhfsdcap03> Subject: Re: [PATCH] eint: add gpio vritual number select From: Chuanjia Liu To: Sean Wang Date: Mon, 17 Dec 2018 11:15:04 +0800 In-Reply-To: References: <1544693783-25079-1-git-send-email-chuanjia.liu@mediatek.com> X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181216_191623_209042_F55D86BB X-CRM114-Status: GOOD ( 21.36 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: youlin.pei@mediatek.com, hongkun.cao@mediatek.com, zhiyong.tao@mediatek.com, Linus Walleij , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, hailong.fan@mediatek.com, Matthias Brugger , eddie.huang@mediatek.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, 2018-12-13 at 11:33 -0800, Sean Wang wrote: > On Thu, Dec 13, 2018 at 1:36 AM wrote: > > > > From: Chuanjia Liu > > > > This patch add gpio vritual number select,avoid virtual gpio set SMT. > > s/gpio/GPIO/ > s/vritual/virtual/ > > Virtual GPIOs you said here that means these pins only used inside SoC > and not being exported to outside SoC, right? It seems this kind of > pins doesn't need SMT. > Yes,virtual gpio only used inside SOC and these pins doesn't need set SMT > > > > Signed-off-by: Chuanjia Liu > > --- > > drivers/pinctrl/mediatek/mtk-eint.h | 1 + > > drivers/pinctrl/mediatek/pinctrl-mt8183.c | 1 + > > drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 9 ++++++--- > > 3 files changed, 8 insertions(+), 3 deletions(-) > > > > diff --git a/drivers/pinctrl/mediatek/mtk-eint.h b/drivers/pinctrl/mediatek/mtk-eint.h > > index 48468d0..c16beaf 100644 > > --- a/drivers/pinctrl/mediatek/mtk-eint.h > > +++ b/drivers/pinctrl/mediatek/mtk-eint.h > > @@ -37,6 +37,7 @@ struct mtk_eint_hw { > > u8 ports; > > unsigned int ap_num; > > unsigned int db_cnt; > > + unsigned int vir_start; > > }; > > > > struct mtk_eint; > > diff --git a/drivers/pinctrl/mediatek/pinctrl-mt8183.c b/drivers/pinctrl/mediatek/pinctrl-mt8183.c > > index 6262fd3..bbeafd3 100644 > > --- a/drivers/pinctrl/mediatek/pinctrl-mt8183.c > > +++ b/drivers/pinctrl/mediatek/pinctrl-mt8183.c > > @@ -497,6 +497,7 @@ > > .ports = 6, > > .ap_num = 212, > > .db_cnt = 13, > > + .vir_start = 180, > > }; > > > > static const struct mtk_pin_soc mt8183_data = { > > diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c > > index 4a9e0d4..ca3bae1 100644 > > --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c > > +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c > > @@ -289,9 +289,12 @@ static int mtk_xt_set_gpio_as_eint(void *data, unsigned long eint_n) > > if (err) > > return err; > > > > - err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_SMT, MTK_ENABLE); > > - if (err) > > - return err; > > + if (gpio_n < hw->eint->hw->vir_start) { > > + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_SMT, > > + MTK_ENABLE); > > + if (err) > > + return err; > > + } > > The changes will break these SoCs without a properly configured vir_start. > > If SMT seems unnecessary for these kinds of virtual GPIOs pin in the > path, we can do it as > > err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_SMT, > MTK_ENABLE); > /* please add comments for the exclusion condition */ > if (err && err != -ENOTSUPP) > return err; > > If there is getting much special on certain pins between SoCs, and > then we can consider creating a desc->flag to split logic. Yes,SMT unnecessary for these kinds of virtual GPIOS pin in the path,if do it as err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_SMT, MTK_ENABLE); if (err && err != -ENOTSUPP) return err; I wonder if system will lose -ENOTSUPP information when smt was not successfully set by real gpio? > > > > > return 0; > > } > > -- > > 1.7.9.5 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel