From patchwork Thu Jun 23 09:04:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Axe Yang X-Patchwork-Id: 584376 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 65F91C433EF for ; Thu, 23 Jun 2022 09:05:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231208AbiFWJFS (ORCPT ); Thu, 23 Jun 2022 05:05:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45018 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229624AbiFWJFN (ORCPT ); Thu, 23 Jun 2022 05:05:13 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0BDEF2BB29; Thu, 23 Jun 2022 02:05:11 -0700 (PDT) X-UUID: 4f5902a5f1504a228bf647a0626b67ff-20220623 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:169fe4fc-31e2-47fc-8230-3a5e0de372d3, OB:0, LO B:10,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:95,FILE:0,RULE:Release_Ham,A CTION:release,TS:90 X-CID-INFO: VERSION:1.1.6, REQID:169fe4fc-31e2-47fc-8230-3a5e0de372d3, OB:0, LOB: 10,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:95,FILE:0,RULE:Spam_GS981B3D,A CTION:quarantine,TS:90 X-CID-META: VersionHash:b14ad71, CLOUDID:9f1451ea-f7af-4e69-92ee-0fd74a0c286c, C OID:175be5b56798,Recheck:0,SF:28|17|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,QS:nil,BEC:nil,COL:0 X-UUID: 4f5902a5f1504a228bf647a0626b67ff-20220623 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 670946125; Thu, 23 Jun 2022 17:05:07 +0800 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) 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, 23 Jun 2022 17:05:07 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 23 Jun 2022 17:05:06 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 23 Jun 2022 17:05:05 +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: [PATCH v13 2/3] mmc: core: Add support for SDIO wakeup interrupt Date: Thu, 23 Jun 2022 17:04:44 +0800 Message-ID: <20220623090445.1401-3-axe.yang@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220623090445.1401-1-axe.yang@mediatek.com> References: <20220623090445.1401-1-axe.yang@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.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(). Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Axe Yang --- drivers/mmc/core/sdio.c | 14 ++++++++++++++ include/linux/mmc/card.h | 8 +++++++- include/linux/mmc/sdio.h | 5 +++++ 3 files changed, 26 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 25799accf8a0..165d8b3c3a96 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -226,6 +226,20 @@ 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; + + 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) */