From patchwork Thu Mar 17 10:12:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?QXhlIFlhbmcgKOadqOejiik=?= X-Patchwork-Id: 12783851 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 11952C433EF for ; Thu, 17 Mar 2022 10:13:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=PETjsLM5OnlY7JDEHU8NG16NlZbtFx2gh2zi9YBKjFY=; b=NPdF/pIO5oCAC2 0CLmDur0I1eGnL92P10li7kMCYCw/5NRTmW1XkX4x+y8zdyy69jqn16SkxCkrvQq69un4/B6c6YwC 3U18+G0MjfTDADpxkHEhF0cU5jH8Dm40daR99KxjsrwGEZhRAr+Gkm4jqMrfoMsYBJmzK9BL4u7/Q dgPyeM/h+vra7uTmipMCuEjCvtWzF0OfNJzv+2bhT2GT66Fx/8A1mhDNJRup8daHeRwAsYe0n63OC ECM22G2ObPm4AHhDCFy6XZiL096zyWmIb5Mw/a42TN/9iW4CuHi7EOe9Tpf2fvTqmUlDI4Tb0kJSe LFkpkpTJj655qkpOTxgg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nUn7v-00Fexs-Pz; Thu, 17 Mar 2022 10:13:03 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nUn7R-00Fej1-IU; Thu, 17 Mar 2022 10:12:37 +0000 X-UUID: 898689ad537f460cb8e76e512a21a063-20220317 X-UUID: 898689ad537f460cb8e76e512a21a063-20220317 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1815731414; Thu, 17 Mar 2022 03:12:29 -0700 Received: from mtkexhb02.mediatek.inc (172.21.101.103) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 17 Mar 2022 03:12:28 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkexhb02.mediatek.inc (172.21.101.103) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 17 Mar 2022 18:12:20 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 17 Mar 2022 18:12:19 +0800 From: Axe Yang To: Ulf Hansson , Rob Herring , Chaotian Jing , Matthias Brugger , Adrian Hunter CC: Yoshihiro Shimoda , Satya Tangirala , Andy Shevchenko , Wolfram Sang , Axe Yang , Lucas Stach , Eric Biggers , Andrew Jeffery , Stephen Boyd , Kiwoong Kim , Yue Hu , Tian Tao , , , , , , Subject: [RESEND v7 1/3] dt-bindings: mmc: mtk-sd: extend interrupts and pinctrls properties Date: Thu, 17 Mar 2022 18:12:13 +0800 Message-ID: <20220317101215.24985-2-axe.yang@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220317101215.24985-1-axe.yang@mediatek.com> References: <20220317101215.24985-1-axe.yang@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-20220317_031233_665956_3E57B4D6 X-CRM114-Status: GOOD ( 11.06 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Extend interrupts and pinctrls for SDIO wakeup interrupt feature. This feature allow SDIO devices alarm asynchronous interrupt to host even when host stop providing clock to SDIO card. An extra wakeup interrupt and pinctrl states for SDIO DAT1 pin state switching are required in this scenario. Signed-off-by: Axe Yang Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/mmc/mtk-sd.yaml | 24 ++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml index 297ada03e3de..fb66b042c32f 100644 --- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml @@ -69,12 +69,24 @@ properties: - const: ahb_cg interrupts: - maxItems: 1 + description: + Should at least contain MSDC GIC interrupt. To support SDIO in-band wakeup, an extended + interrupt is required and be configured as wakeup source irq. + minItems: 1 + maxItems: 2 pinctrl-names: + description: + Should at least contain default and state_uhs. To support SDIO in-band wakeup, dat1 pin + will be switched between GPIO mode and SDIO DAT1 mode, state_eint and state_dat1 are + mandatory in this scenarios. + minItems: 2 + maxItems: 4 items: - const: default - const: state_uhs + - const: state_eint + - const: state_dat1 pinctrl-0: description: @@ -86,6 +98,16 @@ properties: should contain uhs mode pin ctrl. maxItems: 1 + pinctrl-2: + description: + should switch dat1 pin to GPIO mode. + maxItems: 1 + + pinctrl-3: + description: + should switch SDIO dat1 pin from GPIO mode back to SDIO mode. + maxItems: 1 + assigned-clocks: description: PLL of the source clock. From patchwork Thu Mar 17 10:12:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?QXhlIFlhbmcgKOadqOejiik=?= X-Patchwork-Id: 12783850 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id DCBE8C433F5 for ; Thu, 17 Mar 2022 10:13:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4GCG2nH69xuR0z5QkY2yiUCNtXVZgIAgOeiX5cKHIi0=; b=M9VqsKRVBQ9P5r oaY7FmeFOlRBKke3aAfXYKwxSqkcIcBwFCreo4J8IO4Apqcux5boATI3SAl6sV1VN+YmyAnuw5dWm PpcP0S347ZKYnMOWfNbl/kzPzpsdGsgVZkrmqTNVrsfHUivAJjbNTZYDEY4ZtsiFW/kYlIjKB748U D3Rxz2dZReC9mAQXSXRPnWoW+NFsmeo3ors9WCQxVXhGmEAihi9cTHe9keBEJXeia/OgRFipei75G sFQHGpnrmFcTQ9q9eXVkRExrVI2gS6Woz7ADUet74PGLfSOdpfqRetGHks9oMR0bJzVoV0YwNonh5 gIObPvN1u9nYDD6tFICg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nUn7u-00FexQ-TS; Thu, 17 Mar 2022 10:13:02 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nUn7R-00Feiz-2a; Thu, 17 Mar 2022 10:12:37 +0000 X-UUID: 2042e92b0781482bae959dcfe51f69a6-20220317 X-UUID: 2042e92b0781482bae959dcfe51f69a6-20220317 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 857425329; Thu, 17 Mar 2022 03:12:25 -0700 Received: from mtkmbs10n2.mediatek.inc (172.21.101.183) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 17 Mar 2022 03:12:23 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Thu, 17 Mar 2022 18:12:21 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 17 Mar 2022 18:12:20 +0800 From: Axe Yang To: Ulf Hansson , Rob Herring , Chaotian Jing , Matthias Brugger , Adrian Hunter CC: Yoshihiro Shimoda , Satya Tangirala , Andy Shevchenko , Wolfram Sang , Axe Yang , Lucas Stach , Eric Biggers , Andrew Jeffery , Stephen Boyd , Kiwoong Kim , Yue Hu , Tian Tao , , , , , , Subject: [RESEND v7 2/3] mmc: core: Add support for SDIO wakeup interrupt Date: Thu, 17 Mar 2022 18:12:14 +0800 Message-ID: <20220317101215.24985-3-axe.yang@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220317101215.24985-1-axe.yang@mediatek.com> References: <20220317101215.24985-1-axe.yang@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-20220317_031233_188296_10DE2BCC X-CRM114-Status: GOOD ( 14.39 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org If wakeup-source flag is set in host dts node, parse EAI information from SDIO CCCR interrupt externsion segment for in-band wakeup. If async interrupt is supported by SDIO card then enable it and set enable_async_irq flag in sdio_cccr structure to 1. The parse flow is implemented in sdio_read_cccr(). Acked-by: AngeloGioacchino Del Regno Signed-off-by: Axe Yang --- drivers/mmc/core/sdio.c | 17 +++++++++++++++++ include/linux/mmc/card.h | 8 +++++++- include/linux/mmc/sdio.h | 5 +++++ 3 files changed, 29 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 25799accf8a0..4898c5e9a299 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -226,6 +226,23 @@ static int sdio_read_cccr(struct mmc_card *card, u32 ocr) card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_C; if (data & SDIO_DRIVE_SDTD) card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_D; + + if (card->host->pm_caps & MMC_PM_WAKE_SDIO_IRQ) { + ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_INTERRUPT_EXT, 0, + &data); + if (ret) + goto out; + + if (data & SDIO_INTERRUPT_EXT_SAI) { + data |= SDIO_INTERRUPT_EXT_EAI; + ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_INTERRUPT_EXT, + data, NULL); + if (ret) + goto out; + + card->cccr.enable_async_irq = 1; + } + } } /* if no uhs mode ensure we check for high speed */ diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 37f975875102..968650c0b345 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -219,7 +219,8 @@ struct sdio_cccr { wide_bus:1, high_power:1, high_speed:1, - disable_cd:1; + disable_cd:1, + enable_async_irq:1; }; struct sdio_cis { @@ -343,6 +344,11 @@ static inline bool mmc_large_sector(struct mmc_card *card) return card->ext_csd.data_sector_size == 4096; } +static inline int mmc_card_enable_async_irq(struct mmc_card *card) +{ + return card->cccr.enable_async_irq; +} + bool mmc_card_is_blockaddr(struct mmc_card *card); #define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC) diff --git a/include/linux/mmc/sdio.h b/include/linux/mmc/sdio.h index 2a05d1ac4f0e..1ef400f28642 100644 --- a/include/linux/mmc/sdio.h +++ b/include/linux/mmc/sdio.h @@ -159,6 +159,11 @@ #define SDIO_DTSx_SET_TYPE_A (1 << SDIO_DRIVE_DTSx_SHIFT) #define SDIO_DTSx_SET_TYPE_C (2 << SDIO_DRIVE_DTSx_SHIFT) #define SDIO_DTSx_SET_TYPE_D (3 << SDIO_DRIVE_DTSx_SHIFT) + +#define SDIO_CCCR_INTERRUPT_EXT 0x16 +#define SDIO_INTERRUPT_EXT_SAI (1 << 0) +#define SDIO_INTERRUPT_EXT_EAI (1 << 1) + /* * Function Basic Registers (FBR) */ From patchwork Thu Mar 17 10:12:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?QXhlIFlhbmcgKOadqOejiik=?= X-Patchwork-Id: 12783854 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id B9EAAC433EF for ; Thu, 17 Mar 2022 10:22:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=xg1axsO7kFuWDCNa0JaPC9cvUJ1RJ3qCwizN9pCu8gA=; b=msYmJVVfuhi668 gqSc5hGOtJOGRAxS9Di6EQKD+NKqRLc54GAdKhk2e31g2QQl9501YRBC2MiKG5T38e6e4kiwqIDod OhhtgZ1snl4S+yzwhtiC5U/4e2yaz4RWOxcvp6A7FeLPoF76IMC95GRFapSmZin22E6+ztbLJ5Z7t 6XYB1GFVgR4ez/xTmGnxP9N0EjXjLLXGTEn+x61BprQiGS86f1P7/zZJ4wj3feiF/dopLZmMxbzpL QcaM6NkMNXO2eCh1HXxsij4KY72sgDJxZmYo8IZ6+WJmZgDPRs8SNOjRYU+TOeCGLNyf39PUIBMYj 7af2wc3ng69tIlipxSpw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nUnHH-00Fhus-1K; Thu, 17 Mar 2022 10:22:43 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nUnHD-00FhtB-M8; Thu, 17 Mar 2022 10:22:41 +0000 X-UUID: bb0e05b9b4f74b8283a06a97cf8cd2cd-20220317 X-UUID: bb0e05b9b4f74b8283a06a97cf8cd2cd-20220317 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 413760112; Thu, 17 Mar 2022 03:22:33 -0700 Received: from mtkexhb01.mediatek.inc (172.21.101.102) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 17 Mar 2022 03:12:31 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkexhb01.mediatek.inc (172.21.101.102) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 17 Mar 2022 18:12:23 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 17 Mar 2022 18:12:21 +0800 From: Axe Yang To: Ulf Hansson , Rob Herring , Chaotian Jing , Matthias Brugger , Adrian Hunter CC: Yoshihiro Shimoda , Satya Tangirala , Andy Shevchenko , Wolfram Sang , Axe Yang , Lucas Stach , Eric Biggers , Andrew Jeffery , Stephen Boyd , Kiwoong Kim , Yue Hu , Tian Tao , , , , , , , Yong Mao Subject: [RESEND v7 3/3] mmc: mediatek: add support for SDIO eint wakup IRQ Date: Thu, 17 Mar 2022 18:12:15 +0800 Message-ID: <20220317101215.24985-4-axe.yang@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220317101215.24985-1-axe.yang@mediatek.com> References: <20220317101215.24985-1-axe.yang@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-20220317_032239_742926_E57D5CA5 X-CRM114-Status: GOOD ( 24.35 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Add support for eint IRQ when MSDC is used as an SDIO host. This feature requires SDIO device support async IRQ function. With this feature, SDIO host can be awakened by SDIO card in suspend state, without additional pin. MSDC driver will time-share the SDIO DAT1 pin. During suspend, MSDC turn off clock and switch SDIO DAT1 pin to GPIO mode. And during resume, switch GPIO function back to DAT1 mode then turn on clock. Some device tree property should be added or modified in MSDC node to support SDIO eint IRQ. Pinctrls named "state_dat1" and "state_eint" are mandatory. Since this feature depends on asynchronous interrupts, "wakeup-source", "keep-power-in-suspend" and "cap-sdio-irq" flags are necessary, and the interrupts list should be extended: &mmcX { ... interrupts-extended = <...>, <&pio xxx IRQ_TYPE_LEVEL_LOW>; ... pinctrl-names = "default", "state_uhs", "state_eint", "state_dat1"; ... pinctrl-2 = <&mmc2_pins_eint>; pinctrl-3 = <&mmc2_pins_dat1>; ... cap-sdio-irq; keep-power-in-suspend; wakeup-source; ... }; Co-developed-by: Yong Mao Signed-off-by: Yong Mao Signed-off-by: Axe Yang --- drivers/mmc/host/mtk-sd.c | 100 +++++++++++++++++++++++++++++++++++--- 1 file changed, 92 insertions(+), 8 deletions(-) diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index 65037e1d7723..8560d040bacb 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * Copyright (c) 2014-2015 MediaTek Inc. + * Copyright (c) 2014-2015, 2022 MediaTek Inc. * Author: Chaotian.Jing */ @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -440,8 +441,12 @@ struct msdc_host { struct pinctrl *pinctrl; struct pinctrl_state *pins_default; struct pinctrl_state *pins_uhs; + struct pinctrl_state *pins_eint; + struct pinctrl_state *pins_dat1; struct delayed_work req_timeout; int irq; /* host interrupt */ + int eint_irq; /* interrupt from sdio device for waking up system */ + int sdio_wake_irq_depth; struct reset_control *reset; struct clk *src_clk; /* msdc source clock */ @@ -465,6 +470,7 @@ struct msdc_host { bool hs400_tuning; /* hs400 mode online tuning */ bool internal_cd; /* Use internal card-detect logic */ bool cqhci; /* support eMMC hw cmdq */ + bool sdio_eint_ready; /* Ready to support SDIO eint interrupt */ struct msdc_save_para save_para; /* used when gate HCLK */ struct msdc_tune_para def_tune_para; /* default tune setting */ struct msdc_tune_para saved_tune_para; /* tune result of CMD21/CMD19 */ @@ -1527,10 +1533,12 @@ static void msdc_enable_sdio_irq(struct mmc_host *mmc, int enb) __msdc_enable_sdio_irq(host, enb); spin_unlock_irqrestore(&host->lock, flags); - if (enb) - pm_runtime_get_noresume(host->dev); - else - pm_runtime_put_noidle(host->dev); + if (mmc->card && !mmc_card_enable_async_irq(mmc->card)) { + if (enb) + pm_runtime_get_noresume(host->dev); + else + pm_runtime_put_noidle(host->dev); + } } static irqreturn_t msdc_cmdq_irq(struct msdc_host *host, u32 intsts) @@ -2631,6 +2639,23 @@ static int msdc_drv_probe(struct platform_device *pdev) goto host_free; } + /* Support for SDIO eint irq ? */ + if (mmc->pm_caps & MMC_PM_WAKE_SDIO_IRQ) { + host->pins_eint = pinctrl_lookup_state(host->pinctrl, "state_eint"); + if (IS_ERR(host->pins_eint)) { + dev_dbg(&pdev->dev, "Cannot find pinctrl eint!\n"); + } else { + host->pins_dat1 = pinctrl_lookup_state(host->pinctrl, "state_dat1"); + if (IS_ERR(host->pins_dat1)) { + ret = dev_err_probe(&pdev->dev, PTR_ERR(host->pins_dat1), + "Cannot find pinctrl dat1!\n"); + goto host_free; + } + + host->sdio_eint_ready = true; + } + } + msdc_of_property_parse(pdev, host); host->dev = &pdev->dev; @@ -2722,6 +2747,21 @@ static int msdc_drv_probe(struct platform_device *pdev) if (ret) goto release; + if (host->sdio_eint_ready) { + host->eint_irq = irq_of_parse_and_map(host->dev->of_node, 1); + ret = host->eint_irq ? dev_pm_set_dedicated_wake_irq(host->dev, host->eint_irq) : + -ENODEV; + + if (ret) { + dev_err(host->dev, "Failed to register data1 eint irq!\n"); + goto release; + } + + dev_pm_disable_wake_irq(host->dev); + pinctrl_select_state(host->pinctrl, host->pins_dat1); + } + + device_init_wakeup(host->dev, true); pm_runtime_set_active(host->dev); pm_runtime_set_autosuspend_delay(host->dev, MTK_MMC_AUTOSUSPEND_DELAY); pm_runtime_use_autosuspend(host->dev); @@ -2734,6 +2774,7 @@ static int msdc_drv_probe(struct platform_device *pdev) return 0; end: pm_runtime_disable(host->dev); + dev_pm_clear_wake_irq(host->dev); release: platform_set_drvdata(pdev, NULL); msdc_deinit_hw(host); @@ -2845,6 +2886,16 @@ static int __maybe_unused msdc_runtime_suspend(struct device *dev) struct msdc_host *host = mmc_priv(mmc); msdc_save_reg(host); + + if (host->sdio_eint_ready) { + disable_irq(host->irq); + pinctrl_select_state(host->pinctrl, host->pins_eint); + if (host->sdio_wake_irq_depth == 0) { + dev_pm_enable_wake_irq(dev); + host->sdio_wake_irq_depth++; + } + sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); + } msdc_gate_clock(host); return 0; } @@ -2860,12 +2911,25 @@ static int __maybe_unused msdc_runtime_resume(struct device *dev) return ret; msdc_restore_reg(host); + + if (host->sdio_eint_ready) { + if (host->sdio_wake_irq_depth > 0) { + dev_pm_disable_wake_irq(dev); + host->sdio_wake_irq_depth--; + sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); + } else { + sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ); + } + pinctrl_select_state(host->pinctrl, host->pins_dat1); + enable_irq(host->irq); + } return 0; } -static int __maybe_unused msdc_suspend(struct device *dev) +static int __maybe_unused msdc_suspend_noirq(struct device *dev) { struct mmc_host *mmc = dev_get_drvdata(dev); + struct msdc_host *host = mmc_priv(mmc); int ret; if (mmc->caps2 & MMC_CAP2_CQE) { @@ -2874,16 +2938,36 @@ static int __maybe_unused msdc_suspend(struct device *dev) return ret; } + if (host->sdio_eint_ready) + enable_irq_wake(host->eint_irq); + return pm_runtime_force_suspend(dev); } -static int __maybe_unused msdc_resume(struct device *dev) +static int __maybe_unused msdc_resume_noirq(struct device *dev) { + struct mmc_host *mmc = dev_get_drvdata(dev); + struct msdc_host *host = mmc_priv(mmc); + + if (host->sdio_eint_ready) { + disable_irq_wake(host->eint_irq); + + /* + * In noirq resume stage, msdc_runtime_resume() + * won't be called, so disalbe wake irq here + * to block dedicated wake irq handler callback. + */ + if (likely(host->sdio_wake_irq_depth > 0)) { + dev_pm_disable_wake_irq(dev); + host->sdio_wake_irq_depth--; + } + } + return pm_runtime_force_resume(dev); } static const struct dev_pm_ops msdc_dev_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(msdc_suspend, msdc_resume) + SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(msdc_suspend_noirq, msdc_resume_noirq) SET_RUNTIME_PM_OPS(msdc_runtime_suspend, msdc_runtime_resume, NULL) };