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=-9.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT 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 EBE8FC433E3 for ; Thu, 18 Jun 2020 11:34:40 +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 C1E8A206C3 for ; Thu, 18 Jun 2020 11:34:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="KMGpjqyZ"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="sc2Q/pV3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C1E8A206C3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+linux-mediatek=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: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=P8pyPoVQGu9M6FsY/iWyst+4YVle3moh9M3SO/rZyss=; b=KMGpjqyZq/F3Fn YjMMQHriqI+R/yvZ/qrUzpR0VXQfQPpJqyJM/DNf8t3Xo578nJar5ivbaT2R0r1pdyB5rePQDnkjV rLOvZwFiTCtF94X5TYtiAKAEss5YWUKhM6moiSxee0uUZmx29Lr+3a0BbCu/TAmMRLaNUQUboDcBl 9pSC4e8pA5/B6t0v3xxvigc1INT9H9geZgHfNkKuIiWdqjd3defRZDCKSzXZ2xTqAGRAvqMeDWlBr cATHeUELNBonMTB2njYxHB2qkC7ArjfcepTnvG+ptU5hd7OW91DFVQDuu9/pI3XapqriEQj9sp/li 7Zkl+G5ArzStieoNm2rg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jlsoP-0008TS-Qi; Thu, 18 Jun 2020 11:34:29 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jlsoC-0008FO-GC; Thu, 18 Jun 2020 11:34:17 +0000 X-UUID: 3823626af74141f195f9991c2f1b8534-20200618 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=hw1Pb8jVQk9FC4VBMjRDMJKfMp8kJn7O5WM3f/NAK3Y=; b=sc2Q/pV320OfrmW8HqdxmtNmKtaZW8dmL0ofVKpkMGFriyYj1M6MGXgAXRTNg3AdV5cEjZZoaTXH7r0kIIqJEqmmt6uWkvF9uXXDdyG3axGi6dB93aDfxu9UVrPlGmRxpH31GJWi7Tr1Ox6EsZWIEy05vDZDHYROl3RL+tbuzrQ=; X-UUID: 3823626af74141f195f9991c2f1b8534-20200618 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 123669692; Thu, 18 Jun 2020 03:33:59 -0800 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 18 Jun 2020 04:34:09 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 18 Jun 2020 19:34:02 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 18 Jun 2020 19:34:02 +0800 From: Hanks Chen To: Linus Walleij , Rob Herring , Matthias Brugger , "Michael Turquette" , Stephen Boyd , "Sean Wang" Subject: [PATCH v6 3/7] pinctrl: mediatek: avoid virtual gpio trying to set reg Date: Thu, 18 Jun 2020 19:33:34 +0800 Message-ID: <1592480018-3340-4-git-send-email-hanks.chen@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1592480018-3340-1-git-send-email-hanks.chen@mediatek.com> References: <1592480018-3340-1-git-send-email-hanks.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200618_043416_547946_21773F24 X-CRM114-Status: GOOD ( 10.76 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, CC Hwang , wsd_upstream@mediatek.com, Andy Teng , Mars Cheng , Hanks Chen , Loda Chou , linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-mediatek@lists.infradead.org, mtk01761 , linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org for virtual gpios, they should not do reg setting and should behave as expected for eint function. Signed-off-by: Hanks Chen Signed-off-by: Mars Cheng --- drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 25 ++++++++++++++++++++++ drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h | 1 + drivers/pinctrl/mediatek/pinctrl-paris.c | 7 ++++++ 3 files changed, 33 insertions(+) diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c index b77b18f..c53e2c3 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c @@ -243,6 +243,28 @@ static int mtk_xt_find_eint_num(struct mtk_pinctrl *hw, unsigned long eint_n) return EINT_NA; } +/* + * Virtual GPIO only used inside SOC and not being exported to outside SOC. + * Some modules use virtual GPIO as eint (e.g. pmif or usb). + * In MTK platform, external interrupt (EINT) and GPIO is 1-1 mapping + * and we can set GPIO as eint. + * But some modules use specific eint which doesn't have real GPIO pin. + * So we use virtual GPIO to map it. + */ + +bool mtk_is_virt_gpio(struct mtk_pinctrl *hw, unsigned int gpio_n) +{ + const struct mtk_pin_desc *desc; + bool virt_gpio = false; + + desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n]; + + if (desc->funcs && !desc->funcs[desc->eint.eint_m].name) + virt_gpio = true; + + return virt_gpio; +} + static int mtk_xt_get_gpio_n(void *data, unsigned long eint_n, unsigned int *gpio_n, struct gpio_chip **gpio_chip) @@ -295,6 +317,9 @@ static int mtk_xt_set_gpio_as_eint(void *data, unsigned long eint_n) if (err) return err; + if (mtk_is_virt_gpio(hw, gpio_n)) + return 0; + desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n]; err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_MODE, diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h index 27df087..bd079f4f 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h @@ -315,4 +315,5 @@ int mtk_pinconf_adv_drive_set(struct mtk_pinctrl *hw, int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, u32 *val); +bool mtk_is_virt_gpio(struct mtk_pinctrl *hw, unsigned int gpio_n); #endif /* __PINCTRL_MTK_COMMON_V2_H */ diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c index 90a432b..a23c182 100644 --- a/drivers/pinctrl/mediatek/pinctrl-paris.c +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c @@ -769,6 +769,13 @@ static int mtk_gpio_get_direction(struct gpio_chip *chip, unsigned int gpio) if (gpio >= hw->soc->npins) return -EINVAL; + /* + * "Virtual" GPIOs are always and only used for interrupts + * Since they are only used for interrupts, they are always inputs + */ + if (mtk_is_virt_gpio(hw, gpio)) + return 1; + desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio]; err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DIR, &value); -- 1.7.9.5 _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek