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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10328C00140 for ; Thu, 18 Aug 2022 05:54:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242733AbiHRFyT (ORCPT ); Thu, 18 Aug 2022 01:54:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240278AbiHRFyS (ORCPT ); Thu, 18 Aug 2022 01:54:18 -0400 Received: from mail-ej1-x62c.google.com (mail-ej1-x62c.google.com [IPv6:2a00:1450:4864:20::62c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DDB1C70E57 for ; Wed, 17 Aug 2022 22:54:16 -0700 (PDT) Received: by mail-ej1-x62c.google.com with SMTP id dc19so1285962ejb.12 for ; Wed, 17 Aug 2022 22:54:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:subject:from:references:cc:to :content-language:user-agent:mime-version:date:message-id:from:to:cc; bh=QAv3rLn5bLt/fWxgAqcMN5YqYdzhNtYErcOJxTXB1wk=; b=YXJHZCJLTldxtnwTgFApWl5em9QGjb6cjLo7ipDDAmNU70f/ztjqYR0wOiD6fkMiFf HjQOy1EPOF1/VPwpLx9wZXs1m+iGQrlIbx6nf8j0ss5BgX5y6MHt429VLmIbpZ5Ls8/+ Q5yBuSobeTIzrnhsB+6a30yyv8+XnlNFQTOxqFF6FWFRWARHcM5aN1xbKtaJ9v29X9P0 9frGHmcFleQGWLH9E/KI+Y5QT2Wt3xyNaL8ZHz1SLMKdL7vjDMCChhED+V0rGyquS4H1 r1ri2CejNPjyzLFLD4M5aI7Xr659bVAU7ISOoOzp68+w8wCPEqzbdQA2ghsBtIPkrNgu HkPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:subject:from:references:cc:to :content-language:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc; bh=QAv3rLn5bLt/fWxgAqcMN5YqYdzhNtYErcOJxTXB1wk=; b=LLRTEtRtRKzKsuSg3pXeezZ4lRc51MmxePUUd5+0chgIUQMVK5QIitOGl4UcKo4Ruu trxX8OxcWvVIVg84KJqtwkAS/b4fm9sXZMeu/0LPNYnyZQMinzhE2btszwtt5LQPgk2H 2Tr95yCj1S+E/DOb7xhXPpaiOuS9v2/jy5Pz+E46mgkbC7xklxasDrvoDPzt5KQFv86M mvKap7GFMm65de9VHWrc40R54yCRHzwNgG/Sr1E8LZ8kmi8tKMbnMXMSK57++dwmfgCu 5r/ynsbeYUrKZ0nTzJDg3R0rWvzFP7vVuRzLhAc4JgwhvMm0zH6IpxFJBLTt0/aEYj3r TKvQ== X-Gm-Message-State: ACgBeo2Bux9X82q6WS4utcQaUnn44sm78F72Gnq10tkwcqSLECmk7qJO 27dHb9LJNmVo31GotpsxttE= X-Google-Smtp-Source: AA6agR6tmkRbmUUxJBHemc7tmef2wlNa/hC363RS4IryW+nPyp07x0jQJf2vMZH6fmeN/A0/xTgGmg== X-Received: by 2002:a17:907:738a:b0:730:7537:848c with SMTP id er10-20020a170907738a00b007307537848cmr895158ejc.488.1660802055414; Wed, 17 Aug 2022 22:54:15 -0700 (PDT) Received: from ?IPV6:2a01:c23:bdc7:a00:a1fc:6cca:3686:2302? (dynamic-2a01-0c23-bdc7-0a00-a1fc-6cca-3686-2302.c23.pool.telefonica.de. [2a01:c23:bdc7:a00:a1fc:6cca:3686:2302]) by smtp.googlemail.com with ESMTPSA id o26-20020a170906289a00b0071cbc7487e1sm330077ejd.69.2022.08.17.22.54.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 17 Aug 2022 22:54:14 -0700 (PDT) Message-ID: <5030c495-e027-e900-0f79-e5343aa5777c@gmail.com> Date: Thu, 18 Aug 2022 07:54:09 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.12.0 Content-Language: en-US To: Ulf Hansson Cc: Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , "linux-mmc@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "open list:ARM/Amlogic Meson..." References: From: Heiner Kallweit Subject: Re: [PATCH] mmc: meson-gx: add SDIO interrupt support In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org On 15.08.2022 20:20, Ulf Hansson wrote: > On Sun, 14 Aug 2022 at 23:44, Heiner Kallweit wrote: >> >> This adds SDIO interrupt support. >> Successfully tested on a S905X4-based system with a BRCM4334 >> SDIO wifi module (brcmfmac driver). >> >> Signed-off-by: Heiner Kallweit >> --- >> drivers/mmc/host/meson-gx-mmc.c | 45 +++++++++++++++++++++++++-------- >> 1 file changed, 34 insertions(+), 11 deletions(-) >> >> diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c >> index 2f08d442e..e8d53fcdd 100644 >> --- a/drivers/mmc/host/meson-gx-mmc.c >> +++ b/drivers/mmc/host/meson-gx-mmc.c >> @@ -41,14 +41,17 @@ >> #define CLK_V2_TX_DELAY_MASK GENMASK(19, 16) >> #define CLK_V2_RX_DELAY_MASK GENMASK(23, 20) >> #define CLK_V2_ALWAYS_ON BIT(24) >> +#define CLK_V2_IRQ_SDIO_SLEEP BIT(29) >> >> #define CLK_V3_TX_DELAY_MASK GENMASK(21, 16) >> #define CLK_V3_RX_DELAY_MASK GENMASK(27, 22) >> #define CLK_V3_ALWAYS_ON BIT(28) >> +#define CLK_V3_IRQ_SDIO_SLEEP BIT(29) >> >> #define CLK_TX_DELAY_MASK(h) (h->data->tx_delay_mask) >> #define CLK_RX_DELAY_MASK(h) (h->data->rx_delay_mask) >> #define CLK_ALWAYS_ON(h) (h->data->always_on) >> +#define CLK_IRQ_SDIO_SLEEP(h) (h->data->irq_sdio_sleep) >> >> #define SD_EMMC_DELAY 0x4 >> #define SD_EMMC_ADJUST 0x8 >> @@ -100,9 +103,6 @@ >> #define IRQ_END_OF_CHAIN BIT(13) >> #define IRQ_RESP_STATUS BIT(14) >> #define IRQ_SDIO BIT(15) >> -#define IRQ_EN_MASK \ >> - (IRQ_CRC_ERR | IRQ_TIMEOUTS | IRQ_END_OF_CHAIN | IRQ_RESP_STATUS |\ >> - IRQ_SDIO) >> >> #define SD_EMMC_CMD_CFG 0x50 >> #define SD_EMMC_CMD_ARG 0x54 >> @@ -136,6 +136,7 @@ struct meson_mmc_data { >> unsigned int rx_delay_mask; >> unsigned int always_on; >> unsigned int adjust; >> + unsigned int irq_sdio_sleep; >> }; >> >> struct sd_emmc_desc { >> @@ -431,6 +432,7 @@ static int meson_mmc_clk_init(struct meson_host *host) >> clk_reg |= FIELD_PREP(CLK_CORE_PHASE_MASK, CLK_PHASE_180); >> clk_reg |= FIELD_PREP(CLK_TX_PHASE_MASK, CLK_PHASE_0); >> clk_reg |= FIELD_PREP(CLK_RX_PHASE_MASK, CLK_PHASE_0); >> + clk_reg |= CLK_IRQ_SDIO_SLEEP(host); >> writel(clk_reg, host->regs + SD_EMMC_CLOCK); >> >> /* get the mux parents */ >> @@ -933,7 +935,6 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id) >> { >> struct meson_host *host = dev_id; >> struct mmc_command *cmd; >> - struct mmc_data *data; >> u32 irq_en, status, raw_status; >> irqreturn_t ret = IRQ_NONE; >> >> @@ -948,14 +949,24 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id) >> return IRQ_NONE; >> } >> >> - if (WARN_ON(!host) || WARN_ON(!host->cmd)) >> + if (WARN_ON(!host)) >> return IRQ_NONE; >> >> /* ack all raised interrupts */ >> writel(status, host->regs + SD_EMMC_STATUS); >> >> cmd = host->cmd; >> - data = cmd->data; >> + >> + if (status & IRQ_SDIO) { >> + mmc_signal_sdio_irq(host->mmc); > > This is the legacy interface for supporting SDIO irqs. I am planning > to remove it, sooner or later. > > Please convert into using sdio_signal_irq() instead. Note that, using > sdio_signal_irq() means you need to implement support for > MMC_CAP2_SDIO_IRQ_NOTHREAD, which also includes to implement the > ->ack_sdio_irq() callback. > > There are other host drivers to be inspired from, but don't hesitate > to ask if there is something unclear. > I switched to the new API and it works for me, will submit a v2. Just one question regarding core code: The core defines sdio_irq_work as delayed work, but no caller sets a delay. Then why not use a simple workqueue and schedule_work() instead of queue_delayed_work()? > [...] > > Kind regards > Uffe 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 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 7DB4EC00140 for ; Thu, 18 Aug 2022 05:54:44 +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:In-Reply-To:Subject:From:References:Cc: To:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=VF0rUyjODxYh5Di7P6fCEDMLW3OombHcBMjYCuveLu8=; b=GYYy9ddULuxo6u /xyEusuQNSNV90eBOlRQ96LY/Rp3Z8MB1DVOQoQCOZi+uueZrYg5IJAhKMPv7jczGO0eCEgK7+K94 T6zT1Jtzln9YmigytS8O0RiWzzuCUHYX8tURV//xm+C69iBPU+NxqyFiceBrStPxeOAK2/INQDVCC HvldzUHW6hXmPZPUwh6hL0YxV+1RZwRFiCHnD88/BB8IOjcz3HgKNCHDo41fdDzpydaM/xJdsK1jc uoNZMKpHe1OfJpIFVTQpjBP6gy8ZsFkzB1hyhqANmIE/YOl1IaM1i9MneF0nuIj8RVb5wgOR2Kktn gMyss8bWeCPu2G9TdzyA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oOYUC-00GPO3-3m; Thu, 18 Aug 2022 05:54:32 +0000 Received: from mail-ej1-x635.google.com ([2a00:1450:4864:20::635]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oOYTz-00GOqI-UH; Thu, 18 Aug 2022 05:54:21 +0000 Received: by mail-ej1-x635.google.com with SMTP id i14so1321464ejg.6; Wed, 17 Aug 2022 22:54:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:subject:from:references:cc:to :content-language:user-agent:mime-version:date:message-id:from:to:cc; bh=QAv3rLn5bLt/fWxgAqcMN5YqYdzhNtYErcOJxTXB1wk=; b=YXJHZCJLTldxtnwTgFApWl5em9QGjb6cjLo7ipDDAmNU70f/ztjqYR0wOiD6fkMiFf HjQOy1EPOF1/VPwpLx9wZXs1m+iGQrlIbx6nf8j0ss5BgX5y6MHt429VLmIbpZ5Ls8/+ Q5yBuSobeTIzrnhsB+6a30yyv8+XnlNFQTOxqFF6FWFRWARHcM5aN1xbKtaJ9v29X9P0 9frGHmcFleQGWLH9E/KI+Y5QT2Wt3xyNaL8ZHz1SLMKdL7vjDMCChhED+V0rGyquS4H1 r1ri2CejNPjyzLFLD4M5aI7Xr659bVAU7ISOoOzp68+w8wCPEqzbdQA2ghsBtIPkrNgu HkPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:subject:from:references:cc:to :content-language:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc; bh=QAv3rLn5bLt/fWxgAqcMN5YqYdzhNtYErcOJxTXB1wk=; b=Por3fNU84URrTSbMT1a1e37Pkhs/IFLFCoI7KPAofui3sx4Lks5vh61Hm4x1OzXjux dxZyXsp/71JcpP0ttUjkCvy2lVIKr4h90CAHBvK38TdkhVm22CynRfCJ6hsxqjCXo/Eo ESoC/csra/kzvEqPM39J3KR/FcaQcWVl+PCt+60BreWBT0t2pf0tTKePCv3/FQIX4M+1 ByC3qePjJD66QMm4LEOGNxq/2MmQtYnNyjlQkA+312R94Gd+Zkm8E4+sXY1dwtOGH2Dc CmVBYRWYILG8+ldc4ANqKegujIRSkdsY5c6JmCGW07MAXLMkMTVV9EUYWEmoILyWZpLR cVmA== X-Gm-Message-State: ACgBeo1o1d7TvMCpU0uKYycyhdpTA+b+cjlR8wfZuwHxcwvcP8yWVAje LnSb0RgkL5f/LHzyqfo/MrIuhRkrFK4= X-Google-Smtp-Source: AA6agR6tmkRbmUUxJBHemc7tmef2wlNa/hC363RS4IryW+nPyp07x0jQJf2vMZH6fmeN/A0/xTgGmg== X-Received: by 2002:a17:907:738a:b0:730:7537:848c with SMTP id er10-20020a170907738a00b007307537848cmr895158ejc.488.1660802055414; Wed, 17 Aug 2022 22:54:15 -0700 (PDT) Received: from ?IPV6:2a01:c23:bdc7:a00:a1fc:6cca:3686:2302? (dynamic-2a01-0c23-bdc7-0a00-a1fc-6cca-3686-2302.c23.pool.telefonica.de. [2a01:c23:bdc7:a00:a1fc:6cca:3686:2302]) by smtp.googlemail.com with ESMTPSA id o26-20020a170906289a00b0071cbc7487e1sm330077ejd.69.2022.08.17.22.54.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 17 Aug 2022 22:54:14 -0700 (PDT) Message-ID: <5030c495-e027-e900-0f79-e5343aa5777c@gmail.com> Date: Thu, 18 Aug 2022 07:54:09 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.12.0 Content-Language: en-US To: Ulf Hansson Cc: Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , "linux-mmc@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "open list:ARM/Amlogic Meson..." References: From: Heiner Kallweit Subject: Re: [PATCH] mmc: meson-gx: add SDIO interrupt support In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220817_225420_050918_D737A6E9 X-CRM114-Status: GOOD ( 22.48 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org On 15.08.2022 20:20, Ulf Hansson wrote: > On Sun, 14 Aug 2022 at 23:44, Heiner Kallweit wrote: >> >> This adds SDIO interrupt support. >> Successfully tested on a S905X4-based system with a BRCM4334 >> SDIO wifi module (brcmfmac driver). >> >> Signed-off-by: Heiner Kallweit >> --- >> drivers/mmc/host/meson-gx-mmc.c | 45 +++++++++++++++++++++++++-------- >> 1 file changed, 34 insertions(+), 11 deletions(-) >> >> diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c >> index 2f08d442e..e8d53fcdd 100644 >> --- a/drivers/mmc/host/meson-gx-mmc.c >> +++ b/drivers/mmc/host/meson-gx-mmc.c >> @@ -41,14 +41,17 @@ >> #define CLK_V2_TX_DELAY_MASK GENMASK(19, 16) >> #define CLK_V2_RX_DELAY_MASK GENMASK(23, 20) >> #define CLK_V2_ALWAYS_ON BIT(24) >> +#define CLK_V2_IRQ_SDIO_SLEEP BIT(29) >> >> #define CLK_V3_TX_DELAY_MASK GENMASK(21, 16) >> #define CLK_V3_RX_DELAY_MASK GENMASK(27, 22) >> #define CLK_V3_ALWAYS_ON BIT(28) >> +#define CLK_V3_IRQ_SDIO_SLEEP BIT(29) >> >> #define CLK_TX_DELAY_MASK(h) (h->data->tx_delay_mask) >> #define CLK_RX_DELAY_MASK(h) (h->data->rx_delay_mask) >> #define CLK_ALWAYS_ON(h) (h->data->always_on) >> +#define CLK_IRQ_SDIO_SLEEP(h) (h->data->irq_sdio_sleep) >> >> #define SD_EMMC_DELAY 0x4 >> #define SD_EMMC_ADJUST 0x8 >> @@ -100,9 +103,6 @@ >> #define IRQ_END_OF_CHAIN BIT(13) >> #define IRQ_RESP_STATUS BIT(14) >> #define IRQ_SDIO BIT(15) >> -#define IRQ_EN_MASK \ >> - (IRQ_CRC_ERR | IRQ_TIMEOUTS | IRQ_END_OF_CHAIN | IRQ_RESP_STATUS |\ >> - IRQ_SDIO) >> >> #define SD_EMMC_CMD_CFG 0x50 >> #define SD_EMMC_CMD_ARG 0x54 >> @@ -136,6 +136,7 @@ struct meson_mmc_data { >> unsigned int rx_delay_mask; >> unsigned int always_on; >> unsigned int adjust; >> + unsigned int irq_sdio_sleep; >> }; >> >> struct sd_emmc_desc { >> @@ -431,6 +432,7 @@ static int meson_mmc_clk_init(struct meson_host *host) >> clk_reg |= FIELD_PREP(CLK_CORE_PHASE_MASK, CLK_PHASE_180); >> clk_reg |= FIELD_PREP(CLK_TX_PHASE_MASK, CLK_PHASE_0); >> clk_reg |= FIELD_PREP(CLK_RX_PHASE_MASK, CLK_PHASE_0); >> + clk_reg |= CLK_IRQ_SDIO_SLEEP(host); >> writel(clk_reg, host->regs + SD_EMMC_CLOCK); >> >> /* get the mux parents */ >> @@ -933,7 +935,6 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id) >> { >> struct meson_host *host = dev_id; >> struct mmc_command *cmd; >> - struct mmc_data *data; >> u32 irq_en, status, raw_status; >> irqreturn_t ret = IRQ_NONE; >> >> @@ -948,14 +949,24 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id) >> return IRQ_NONE; >> } >> >> - if (WARN_ON(!host) || WARN_ON(!host->cmd)) >> + if (WARN_ON(!host)) >> return IRQ_NONE; >> >> /* ack all raised interrupts */ >> writel(status, host->regs + SD_EMMC_STATUS); >> >> cmd = host->cmd; >> - data = cmd->data; >> + >> + if (status & IRQ_SDIO) { >> + mmc_signal_sdio_irq(host->mmc); > > This is the legacy interface for supporting SDIO irqs. I am planning > to remove it, sooner or later. > > Please convert into using sdio_signal_irq() instead. Note that, using > sdio_signal_irq() means you need to implement support for > MMC_CAP2_SDIO_IRQ_NOTHREAD, which also includes to implement the > ->ack_sdio_irq() callback. > > There are other host drivers to be inspired from, but don't hesitate > to ask if there is something unclear. > I switched to the new API and it works for me, will submit a v2. Just one question regarding core code: The core defines sdio_irq_work as delayed work, but no caller sets a delay. Then why not use a simple workqueue and schedule_work() instead of queue_delayed_work()? > [...] > > Kind regards > Uffe _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic 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 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 E4EF5C00140 for ; Thu, 18 Aug 2022 05:55:52 +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:In-Reply-To:Subject:From:References:Cc: To:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=x7XYrqDNlE7OUDKIDRdnzEM2YEMTUsbExTCSLYn3Oaw=; b=Jklj9ougQ6CYDu VHoAxb0XKc0zVuq7bIhniSQNPotokKBYxP2+iSQIs2oi5+Szm/wWW3QDzw6Aq7WI9ZtEJVkEd33PG N78yAPpwCOauq72NBo040dzILQlMJDA/0DE2TurnfGeXielXFdJPDa8slvweVJti//4Pv5sKQCesD duNHjsHGKmmAWEJ2hgtgGjJqdjvVfcZJ/GthaHgwzghvvYBFDkbrp11iTypAaFnJfhlQfyYFUGK3j xCV4pO5btzNFqwvLrzNH3MmMSYPqrJsZ+bZ3rMl4wgZcOWOHsMDzia92m2qmLSJ6/8t7kgGD4A2HS xj257+RIazKevd9ZJRog==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oOYU3-00GP3r-Jc; Thu, 18 Aug 2022 05:54:23 +0000 Received: from mail-ej1-x635.google.com ([2a00:1450:4864:20::635]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oOYTz-00GOqI-UH; Thu, 18 Aug 2022 05:54:21 +0000 Received: by mail-ej1-x635.google.com with SMTP id i14so1321464ejg.6; Wed, 17 Aug 2022 22:54:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:subject:from:references:cc:to :content-language:user-agent:mime-version:date:message-id:from:to:cc; bh=QAv3rLn5bLt/fWxgAqcMN5YqYdzhNtYErcOJxTXB1wk=; b=YXJHZCJLTldxtnwTgFApWl5em9QGjb6cjLo7ipDDAmNU70f/ztjqYR0wOiD6fkMiFf HjQOy1EPOF1/VPwpLx9wZXs1m+iGQrlIbx6nf8j0ss5BgX5y6MHt429VLmIbpZ5Ls8/+ Q5yBuSobeTIzrnhsB+6a30yyv8+XnlNFQTOxqFF6FWFRWARHcM5aN1xbKtaJ9v29X9P0 9frGHmcFleQGWLH9E/KI+Y5QT2Wt3xyNaL8ZHz1SLMKdL7vjDMCChhED+V0rGyquS4H1 r1ri2CejNPjyzLFLD4M5aI7Xr659bVAU7ISOoOzp68+w8wCPEqzbdQA2ghsBtIPkrNgu HkPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:subject:from:references:cc:to :content-language:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc; bh=QAv3rLn5bLt/fWxgAqcMN5YqYdzhNtYErcOJxTXB1wk=; b=Por3fNU84URrTSbMT1a1e37Pkhs/IFLFCoI7KPAofui3sx4Lks5vh61Hm4x1OzXjux dxZyXsp/71JcpP0ttUjkCvy2lVIKr4h90CAHBvK38TdkhVm22CynRfCJ6hsxqjCXo/Eo ESoC/csra/kzvEqPM39J3KR/FcaQcWVl+PCt+60BreWBT0t2pf0tTKePCv3/FQIX4M+1 ByC3qePjJD66QMm4LEOGNxq/2MmQtYnNyjlQkA+312R94Gd+Zkm8E4+sXY1dwtOGH2Dc CmVBYRWYILG8+ldc4ANqKegujIRSkdsY5c6JmCGW07MAXLMkMTVV9EUYWEmoILyWZpLR cVmA== X-Gm-Message-State: ACgBeo1o1d7TvMCpU0uKYycyhdpTA+b+cjlR8wfZuwHxcwvcP8yWVAje LnSb0RgkL5f/LHzyqfo/MrIuhRkrFK4= X-Google-Smtp-Source: AA6agR6tmkRbmUUxJBHemc7tmef2wlNa/hC363RS4IryW+nPyp07x0jQJf2vMZH6fmeN/A0/xTgGmg== X-Received: by 2002:a17:907:738a:b0:730:7537:848c with SMTP id er10-20020a170907738a00b007307537848cmr895158ejc.488.1660802055414; Wed, 17 Aug 2022 22:54:15 -0700 (PDT) Received: from ?IPV6:2a01:c23:bdc7:a00:a1fc:6cca:3686:2302? (dynamic-2a01-0c23-bdc7-0a00-a1fc-6cca-3686-2302.c23.pool.telefonica.de. [2a01:c23:bdc7:a00:a1fc:6cca:3686:2302]) by smtp.googlemail.com with ESMTPSA id o26-20020a170906289a00b0071cbc7487e1sm330077ejd.69.2022.08.17.22.54.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 17 Aug 2022 22:54:14 -0700 (PDT) Message-ID: <5030c495-e027-e900-0f79-e5343aa5777c@gmail.com> Date: Thu, 18 Aug 2022 07:54:09 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.12.0 Content-Language: en-US To: Ulf Hansson Cc: Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , "linux-mmc@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "open list:ARM/Amlogic Meson..." References: From: Heiner Kallweit Subject: Re: [PATCH] mmc: meson-gx: add SDIO interrupt support In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220817_225420_050918_D737A6E9 X-CRM114-Status: GOOD ( 22.48 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 15.08.2022 20:20, Ulf Hansson wrote: > On Sun, 14 Aug 2022 at 23:44, Heiner Kallweit wrote: >> >> This adds SDIO interrupt support. >> Successfully tested on a S905X4-based system with a BRCM4334 >> SDIO wifi module (brcmfmac driver). >> >> Signed-off-by: Heiner Kallweit >> --- >> drivers/mmc/host/meson-gx-mmc.c | 45 +++++++++++++++++++++++++-------- >> 1 file changed, 34 insertions(+), 11 deletions(-) >> >> diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c >> index 2f08d442e..e8d53fcdd 100644 >> --- a/drivers/mmc/host/meson-gx-mmc.c >> +++ b/drivers/mmc/host/meson-gx-mmc.c >> @@ -41,14 +41,17 @@ >> #define CLK_V2_TX_DELAY_MASK GENMASK(19, 16) >> #define CLK_V2_RX_DELAY_MASK GENMASK(23, 20) >> #define CLK_V2_ALWAYS_ON BIT(24) >> +#define CLK_V2_IRQ_SDIO_SLEEP BIT(29) >> >> #define CLK_V3_TX_DELAY_MASK GENMASK(21, 16) >> #define CLK_V3_RX_DELAY_MASK GENMASK(27, 22) >> #define CLK_V3_ALWAYS_ON BIT(28) >> +#define CLK_V3_IRQ_SDIO_SLEEP BIT(29) >> >> #define CLK_TX_DELAY_MASK(h) (h->data->tx_delay_mask) >> #define CLK_RX_DELAY_MASK(h) (h->data->rx_delay_mask) >> #define CLK_ALWAYS_ON(h) (h->data->always_on) >> +#define CLK_IRQ_SDIO_SLEEP(h) (h->data->irq_sdio_sleep) >> >> #define SD_EMMC_DELAY 0x4 >> #define SD_EMMC_ADJUST 0x8 >> @@ -100,9 +103,6 @@ >> #define IRQ_END_OF_CHAIN BIT(13) >> #define IRQ_RESP_STATUS BIT(14) >> #define IRQ_SDIO BIT(15) >> -#define IRQ_EN_MASK \ >> - (IRQ_CRC_ERR | IRQ_TIMEOUTS | IRQ_END_OF_CHAIN | IRQ_RESP_STATUS |\ >> - IRQ_SDIO) >> >> #define SD_EMMC_CMD_CFG 0x50 >> #define SD_EMMC_CMD_ARG 0x54 >> @@ -136,6 +136,7 @@ struct meson_mmc_data { >> unsigned int rx_delay_mask; >> unsigned int always_on; >> unsigned int adjust; >> + unsigned int irq_sdio_sleep; >> }; >> >> struct sd_emmc_desc { >> @@ -431,6 +432,7 @@ static int meson_mmc_clk_init(struct meson_host *host) >> clk_reg |= FIELD_PREP(CLK_CORE_PHASE_MASK, CLK_PHASE_180); >> clk_reg |= FIELD_PREP(CLK_TX_PHASE_MASK, CLK_PHASE_0); >> clk_reg |= FIELD_PREP(CLK_RX_PHASE_MASK, CLK_PHASE_0); >> + clk_reg |= CLK_IRQ_SDIO_SLEEP(host); >> writel(clk_reg, host->regs + SD_EMMC_CLOCK); >> >> /* get the mux parents */ >> @@ -933,7 +935,6 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id) >> { >> struct meson_host *host = dev_id; >> struct mmc_command *cmd; >> - struct mmc_data *data; >> u32 irq_en, status, raw_status; >> irqreturn_t ret = IRQ_NONE; >> >> @@ -948,14 +949,24 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id) >> return IRQ_NONE; >> } >> >> - if (WARN_ON(!host) || WARN_ON(!host->cmd)) >> + if (WARN_ON(!host)) >> return IRQ_NONE; >> >> /* ack all raised interrupts */ >> writel(status, host->regs + SD_EMMC_STATUS); >> >> cmd = host->cmd; >> - data = cmd->data; >> + >> + if (status & IRQ_SDIO) { >> + mmc_signal_sdio_irq(host->mmc); > > This is the legacy interface for supporting SDIO irqs. I am planning > to remove it, sooner or later. > > Please convert into using sdio_signal_irq() instead. Note that, using > sdio_signal_irq() means you need to implement support for > MMC_CAP2_SDIO_IRQ_NOTHREAD, which also includes to implement the > ->ack_sdio_irq() callback. > > There are other host drivers to be inspired from, but don't hesitate > to ask if there is something unclear. > I switched to the new API and it works for me, will submit a v2. Just one question regarding core code: The core defines sdio_irq_work as delayed work, but no caller sets a delay. Then why not use a simple workqueue and schedule_work() instead of queue_delayed_work()? > [...] > > Kind regards > Uffe _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel