From patchwork Fri Mar 31 10:55:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Victor Shih X-Patchwork-Id: 77724 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp476841vqo; Fri, 31 Mar 2023 04:05:55 -0700 (PDT) X-Google-Smtp-Source: AK7set8RlooXVNKMBIKLmzxMDW22e6veK2f7fSy4N7dsX+sOAP8J43PtILO0QnfyHNX1zxEBZQt0 X-Received: by 2002:a05:6a20:3402:b0:dd:df53:4351 with SMTP id i2-20020a056a20340200b000dddf534351mr20723455pzd.40.1680260755345; Fri, 31 Mar 2023 04:05:55 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680260755; cv=none; d=google.com; s=arc-20160816; b=Dewco3/Qsr/8bFRvwxZhitFafEkSrKfSwNHxdzds1BIFM4cpQiRTQMwCZgvStZa4p0 9OjhV1ZG8/99ArfwRAsRKFxCkH3khh5r92NGAhKY0z6ey4bU/nVqIqv01aL+IIuzN226 WxFN16hgnlZ+9fHg03aN2lYWoPaB2hKYeqxDxvQFH4GHV4gBs38wxP2kFs8NKptdFIGE OdKcxidK/i7ssuwY/8csKoXo2In+MrJ3T+LwsmDEzd1nmcYU3mpDfQ/9H6czYqLlND2W 2X21f+fcS8Ox3ERF1z3fduoXUamgMn6JWzqO7W62s7wLe3JlJcko2WAnVGN7qAl41Gtv 806w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=0Iovf4syaqrV5QF9RpdQC8yFp3zM2t9jD65R/OIUlEE=; b=mJvW0Z9RZbEHwpm0hD36dglX7OFLT09/ymeiZIEhT7ZUAC8ERSE06C3PFoffYp4gaP ai6K+NYzYQr3bQRHe2xY0JkHAgp1uC9h8+Tex8xmMLBA08nQEyeS8znLQukngUbLhKJh 8nO6xDBFhJy4khBTu8XuPYEBESkSAp20YybxQRtIOi+rMjYo/dJDtkumCWWJAJBdP/So eeJeSQ6ZNgyKUOjavxnCH1jkP8oFyV9oEuJFUABISOGYBEsz6j2IF2mzcX1BPDgqIpvu EBF3EAG3MZlOCNOIfS3NMyT8Clhtz4LU3CL1QREvPljymWISdf2qD9eqC50yC+M6C34l YpJQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=IGR2QqPh; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id h18-20020aa79f52000000b005a8b856ad47si2213258pfr.7.2023.03.31.04.05.42; Fri, 31 Mar 2023 04:05:55 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=IGR2QqPh; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231948AbjCaK54 (ORCPT + 99 others); Fri, 31 Mar 2023 06:57:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60288 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231801AbjCaK4u (ORCPT ); Fri, 31 Mar 2023 06:56:50 -0400 Received: from mail-pl1-x635.google.com (mail-pl1-x635.google.com [IPv6:2607:f8b0:4864:20::635]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C0B851DF97; Fri, 31 Mar 2023 03:56:35 -0700 (PDT) Received: by mail-pl1-x635.google.com with SMTP id f22so16746597plr.0; Fri, 31 Mar 2023 03:56:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1680260195; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=0Iovf4syaqrV5QF9RpdQC8yFp3zM2t9jD65R/OIUlEE=; b=IGR2QqPhO3v3CqqC7Dj91QDOQjaTsziUerRzLnW1G9f9RASHKLEtP4dKPaXhe0V4Fa nNH2zuOTd8ATQMEr/WCCEZmHoNlaCzCbtAjAuMqOphdJvKt5xRlBASvKZvRvwdAT4+4Z UexP/Hsyo78fp+8BSkp+sX/g+XzhXdtn9UaoZCfwEKQBKkWd9nfLUqXNxWxHQJnOGEKO 8akIjkpBYrF9m3VYZJ3AEgCFG9EpnS9LfbUOkSt8UrXsiRIJaElel81RxKjK6e2w+zCQ y9eZy3OHwgJm97dEz9d/IMuut8mrJaqqqJXw+LNP0kPtcS/sJfp8kfUklhCVTl7Z1KAP HTKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680260195; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=0Iovf4syaqrV5QF9RpdQC8yFp3zM2t9jD65R/OIUlEE=; b=D/oOKigWTMTVBNQblB47d4aY4Aum0njTqXBrctib144/lLk1MsDDMzhHaZBo67d8dK 0AfT3kKY5L5O6Yww5+HO7jZe0roQ2JCF8Se40Zn8CkVD12QKpQ8sAgeqVkGLXqzToozF pxwAGiLjCtvBrq66VZgh90UTmXX11lRNESx7EgtDSi56VpVFfJQ3GWvOzeNyWo3DYyiW Mum/tp/kClC1RGyI+vq1voiX+nvIYG14j9ZCW8DBWCtWYY6Aur+s2CkCnGbYoCf8UoAJ Ho4QzcQVWjmatA+2w+e+U7fsLcKc9JC7n2ssy17ZpSFe1rH1hNRwZoQTMITYZ3mda6vj 1CGw== X-Gm-Message-State: AAQBX9fbkWQARyho/5PRFyf+iYfdS8b05r987Ay2MF08201DTIrc0PVg VlJySKXmUJXcZllfOWRPm2nAPlHneFY= X-Received: by 2002:a17:902:f54c:b0:1a1:b238:d1ab with SMTP id h12-20020a170902f54c00b001a1b238d1abmr28269878plf.69.1680260195453; Fri, 31 Mar 2023 03:56:35 -0700 (PDT) Received: from localhost.localdomain (2001-b400-e25c-983f-c7ff-3efd-77d9-6c16.emome-ip6.hinet.net. [2001:b400:e25c:983f:c7ff:3efd:77d9:6c16]) by smtp.gmail.com with ESMTPSA id f19-20020a170902e99300b0019acd3151d0sm1287665plb.114.2023.03.31.03.56.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 31 Mar 2023 03:56:35 -0700 (PDT) From: Victor Shih X-Google-Original-From: Victor Shih To: ulf.hansson@linaro.org, adrian.hunter@intel.com Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, benchuanggli@gmail.com, HL.Liu@genesyslogic.com.tw, Greg.tu@genesyslogic.com.tw, takahiro.akashi@linaro.org, dlunev@chromium.org, Victor Shih , Ben Chuang Subject: [PATCH V7 11/23] mmc: sdhci-uhs2: add set_power() to support vdd2 Date: Fri, 31 Mar 2023 18:55:34 +0800 Message-Id: <20230331105546.13607-12-victor.shih@genesyslogic.com.tw> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230331105546.13607-1-victor.shih@genesyslogic.com.tw> References: <20230331105546.13607-1-victor.shih@genesyslogic.com.tw> MIME-Version: 1.0 X-Spam-Status: No, score=-0.2 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1761881101570064176?= X-GMAIL-MSGID: =?utf-8?q?1761881101570064176?= This is a UHS-II version of sdhci's set_power operation. VDD2, as well as VDD, is handled here. Signed-off-by: Ben Chuang Signed-off-by: AKASHI Takahiro Signed-off-by: Victor Shih --- drivers/mmc/host/sdhci-uhs2.c | 49 ++++++++++++++++++++++++++++ drivers/mmc/host/sdhci.c | 61 +++++++++++++++++++---------------- drivers/mmc/host/sdhci.h | 1 + 3 files changed, 83 insertions(+), 28 deletions(-) diff --git a/drivers/mmc/host/sdhci-uhs2.c b/drivers/mmc/host/sdhci-uhs2.c index 67621eaabafc..3f232f4e0820 100644 --- a/drivers/mmc/host/sdhci-uhs2.c +++ b/drivers/mmc/host/sdhci-uhs2.c @@ -57,6 +57,13 @@ EXPORT_SYMBOL_GPL(sdhci_uhs2_dump_regs); * * \*****************************************************************************/ +static inline int mmc_opt_regulator_set_ocr(struct mmc_host *mmc, + struct regulator *supply, + unsigned short vdd_bit) +{ + return IS_ERR_OR_NULL(supply) ? 0 : mmc_regulator_set_ocr(mmc, supply, vdd_bit); +} + bool sdhci_uhs2_mode(struct sdhci_host *host) { return host->mmc->flags & MMC_UHS2_SUPPORT; @@ -95,6 +102,48 @@ void sdhci_uhs2_reset(struct sdhci_host *host, u16 mask) } EXPORT_SYMBOL_GPL(sdhci_uhs2_reset); +static void sdhci_uhs2_set_power(struct sdhci_host *host, unsigned char mode, + unsigned short vdd) +{ + struct mmc_host *mmc = host->mmc; + u8 pwr; + + if (mode != MMC_POWER_OFF) { + pwr = sdhci_get_vdd_value(vdd); + if (!pwr) + WARN(1, "%s: Invalid vdd %#x\n", + mmc_hostname(host->mmc), vdd); + pwr |= SDHCI_VDD2_POWER_180; + } + + if (host->pwr == pwr) + return; + host->pwr = pwr; + + if (pwr == 0) { + sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); + + mmc_opt_regulator_set_ocr(mmc, mmc->supply.vmmc, 0); + mmc_opt_regulator_set_ocr(mmc, mmc->supply.vmmc2, 0); + } else { + mmc_opt_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd); + /* support 1.8v only for now */ + mmc_opt_regulator_set_ocr(mmc, mmc->supply.vmmc2, fls(MMC_VDD_165_195) - 1); + + /* Clear the power reg before setting a new value */ + sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); + + /* vdd first */ + pwr |= SDHCI_POWER_ON; + sdhci_writeb(host, pwr & 0xf, SDHCI_POWER_CONTROL); + mdelay(5); + + pwr |= SDHCI_VDD2_POWER_ON; + sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); + mdelay(5); + } +} + /*****************************************************************************\ * * * Driver init/exit * diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index e79e1b5d5cd4..a68a2dce0efe 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -23,7 +23,7 @@ #include #include #include - +#include #include #include @@ -2061,41 +2061,46 @@ static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode, sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); } +unsigned short sdhci_get_vdd_value(unsigned short vdd) +{ + switch (1 << vdd) { + case MMC_VDD_165_195: + /* + * Without a regulator, SDHCI does not support 2.0v + * so we only get here if the driver deliberately + * added the 2.0v range to ocr_avail. Map it to 1.8v + * for the purpose of turning on the power. + */ + case MMC_VDD_20_21: + return SDHCI_POWER_180; + case MMC_VDD_29_30: + case MMC_VDD_30_31: + return SDHCI_POWER_300; + case MMC_VDD_32_33: + case MMC_VDD_33_34: + /* + * 3.4V ~ 3.6V are valid only for those platforms where it's + * known that the voltage reange is supported by hardware. + */ + case MMC_VDD_34_35: + case MMC_VDD_35_36: + return SDHCI_POWER_330; + default: + return 0; + } +} +EXPORT_SYMBOL_GPL(sdhci_get_vdd_value); + void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, unsigned short vdd) { u8 pwr = 0; if (mode != MMC_POWER_OFF) { - switch (1 << vdd) { - case MMC_VDD_165_195: - /* - * Without a regulator, SDHCI does not support 2.0v - * so we only get here if the driver deliberately - * added the 2.0v range to ocr_avail. Map it to 1.8v - * for the purpose of turning on the power. - */ - case MMC_VDD_20_21: - pwr = SDHCI_POWER_180; - break; - case MMC_VDD_29_30: - case MMC_VDD_30_31: - pwr = SDHCI_POWER_300; - break; - case MMC_VDD_32_33: - case MMC_VDD_33_34: - /* - * 3.4 ~ 3.6V are valid only for those platforms where it's - * known that the voltage range is supported by hardware. - */ - case MMC_VDD_34_35: - case MMC_VDD_35_36: - pwr = SDHCI_POWER_330; - break; - default: + pwr = sdhci_get_vdd_value(vdd); + if (!pwr) { WARN(1, "%s: Invalid vdd %#x\n", mmc_hostname(host->mmc), vdd); - break; } } diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 5dffa334d3fc..02ea4a00ad63 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -838,6 +838,7 @@ void sdhci_set_power(struct sdhci_host *host, unsigned char mode, void sdhci_set_power_and_bus_voltage(struct sdhci_host *host, unsigned char mode, unsigned short vdd); +unsigned short sdhci_get_vdd_value(unsigned short vdd); void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, unsigned short vdd); int sdhci_get_cd_nogpio(struct mmc_host *mmc);