From patchwork Fri Sep 13 10:28:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Victor Shih X-Patchwork-Id: 829358 Received: from mail-pl1-f175.google.com (mail-pl1-f175.google.com [209.85.214.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 670BF1DB940; Fri, 13 Sep 2024 10:29:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.175 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726223386; cv=none; b=SHufaLR+ZUwL+/cbHADBwNHixSxjLEBzOE84NkF9oCene0iIOakVBCVISV87aT8Sl1bLzFmlzLeJotTCwN4DGn5P/0RGZswoRpNXrdlfHOzVKZkWvseqmEglQLvZb2238krm2TzVzkWQrHizvZ5XEpLWWw3WVcAFJyZ/KD1cQ8E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726223386; c=relaxed/simple; bh=YFLqV890Z42BNuleGy/377WU3cFQMODtUvsZxEvUggE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=tzFmZYep0+FiYzuGL3gLL/I2538hGVIUpgzWxtqfpAPOLrUq9kSYusPdJdiEVt7jIz9NKaTZG/xeFGQLJsFn8p1BVGt0rKV1zWBNfpcxZVaKlGDoY1l5+iX0tXQTlPD+IciXmKRhfhOKVE5yR+119LDhHKiWuqPO57uVi+iMsps= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=cBZvyHKs; arc=none smtp.client-ip=209.85.214.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="cBZvyHKs" Received: by mail-pl1-f175.google.com with SMTP id d9443c01a7336-2055a3f80a4so14085855ad.2; Fri, 13 Sep 2024 03:29:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1726223385; x=1726828185; darn=vger.kernel.org; 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=sA8jKHOlnNb5oztdOQ8CqUpGZDm97ramC29vExw2ghw=; b=cBZvyHKsvfnn22Fg+krf0umqJim/e4hvoa/W9hNV3rCSsLHJWuyjn+lceAL32c4a+j njTlJf+7JpCxB8dwnurJnazbZHWiQ17SlAI8oMB4/raRF7T5QMBm4fYv/KYmYfX2tRuk JDK1GjIBj8XrqBGBgINEM1gP1TLcw9VzN8fQMOwgW65tNUgrVBPdDqpzncoBEK8IvduI 3S/mYDHDhNKcWOWchLHOd+K/rCHigYB/dhnELKP6gTam/FC+1k5m9EQoQvAD2Z1g4EIy cF+gKGukoO3MEK5oq8mp+50iHpPH2W+864UigYRNkw55ABSEORkKUZP9TSnKEbzf7e+Z PIlQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726223385; x=1726828185; 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=sA8jKHOlnNb5oztdOQ8CqUpGZDm97ramC29vExw2ghw=; b=px5S5/B+1+TJFOiL/mlRzBQwn6nqewW7ChZjsNRYoz/xh2ccFrdYZL8wOE6ctlF8do gxKs55q0rpoTXMM4wlgosvexy1IcHY92m652tGNF84xpte6QLujut11cJQzJUzqaGYV1 sl9/xBJ+bP7c5B6KNCUlSAnLw3xiGMSsS2KZdTot+rECQgIuXeum3JCjmbMDVhermBlj odsTVG5qVsJ8YYAF8ikayvaKgWysoTO1bmfoxWWZ5hJ8o1LJPjdWwhpSmAkhKT/66pkt ZUfzYt9Uf+qrmVamgndTlynv+PY+GbyiWosGINLGrGlSaEzHhP/Go2pjwFvVcPQYUKPD KsEA== X-Forwarded-Encrypted: i=1; AJvYcCWyBcQBH/n3bioSKM3ztZA7hhnT1s+pLCC3bfttt1/qUgaVlQT4Comh4MsNQI6pcApgePNv2Pn0e7wfBbc=@vger.kernel.org X-Gm-Message-State: AOJu0YwPF960asAGglCQnNqsIe5Dc5/lSLXReOzuEPbzv4Bnnk5h08p7 RVrXGBw2w1KoalaovUWoI5a1BG8sVESQtGEgdB7y6eXmsLnpjWZp X-Google-Smtp-Source: AGHT+IFDo86Kh1wDO0Bi76s7UcJVHrghgeRC5dZI/qG07qNoZ96ObwxowNSojYoSUM9scAV4D021Rw== X-Received: by 2002:a17:903:18b:b0:202:301f:36fd with SMTP id d9443c01a7336-2076e361277mr80818475ad.18.1726223384696; Fri, 13 Sep 2024 03:29:44 -0700 (PDT) Received: from localhost.localdomain ([2402:7500:568:acb8:4bcf:ada3:4620:3cfb]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-7db1fad0ac6sm3137683a12.0.2024.09.13.03.29.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Sep 2024 03:29:44 -0700 (PDT) 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, Lucas.Lai@genesyslogic.com.tw, HL.Liu@genesyslogic.com.tw, Greg.tu@genesyslogic.com.tw, dlunev@chromium.org, Victor Shih , Ben Chuang , AKASHI Takahiro , Victor Shih Subject: [PATCH V22 14/22] mmc: sdhci-uhs2: add add_host() and others to set up the driver Date: Fri, 13 Sep 2024 18:28:28 +0800 Message-Id: <20240913102836.6144-15-victorshihgli@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240913102836.6144-1-victorshihgli@gmail.com> References: <20240913102836.6144-1-victorshihgli@gmail.com> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Victor Shih This is a UHS-II version of sdhci's add_host/remove_host operation. Any sdhci drivers which are capable of handling UHS-II cards must call those functions instead of the corresponding sdhci's. Signed-off-by: Ben Chuang Signed-off-by: AKASHI Takahiro Signed-off-by: Victor Shih --- Updates in V22: - Adjust the patch order from v21 patch#18 to v22 patch#14 and remove unnecessary code to avoid defined but not used warnings. Updates in V14: - Use mmc_card_uhs2() to stead sdhci_uhs2_mode() in the __sdhci_uhs2_remove_host(). Updates in V13: - Re-order function to avoid declaration. - Use vqmmc2 to stead vmmc2. Updates in V11: - Remove unused ocr_avail_uhs2. Updates in V10: - Move some definitions of PatchV9[05/23] to PatchV10[20/23]. Updates in V8: - Change return type to void for __sdhci_uhs2_add_host_v4(). - Remove unused variables in __sdhci_uhs2_add_host_v4(). Updates in V7: - __sdhci_add_host() to instead of __sdhci_uhs2_add_host() in sdhci_uhs2_add_host(). - Cancel export state of some functions. Updates in V6: - Add complete_work_fn/thread_irq_fn variables in struct sdhci_host. - Use complete_work_fn/thread_irq_fn variables in sdhci_alloc_host() and sdhci_uhs2_add_host(). - Use sdhci_uhs2_mode() to simplify code in __sdhci_uhs2_remove_host(). --- drivers/mmc/host/sdhci-uhs2.c | 91 +++++++++++++++++++++++++++++++++++ drivers/mmc/host/sdhci-uhs2.h | 2 + 2 files changed, 93 insertions(+) diff --git a/drivers/mmc/host/sdhci-uhs2.c b/drivers/mmc/host/sdhci-uhs2.c index 6b249eb8395a..d3af620c7b68 100644 --- a/drivers/mmc/host/sdhci-uhs2.c +++ b/drivers/mmc/host/sdhci-uhs2.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "sdhci.h" #include "sdhci-uhs2.h" @@ -224,6 +225,96 @@ static void __exit sdhci_uhs2_mod_exit(void) } module_exit(sdhci_uhs2_mod_exit); +/*****************************************************************************\ + * + * Device allocation/registration * + * * +\*****************************************************************************/ + +static void __sdhci_uhs2_add_host_v4(struct sdhci_host *host, u32 caps1) +{ + struct mmc_host *mmc; + u32 max_current_caps2; + + mmc = host->mmc; + + /* Support UHS2 */ + if (caps1 & SDHCI_SUPPORT_UHS2) + mmc->caps2 |= MMC_CAP2_SD_UHS2; + + max_current_caps2 = sdhci_readl(host, SDHCI_MAX_CURRENT_1); + + if ((caps1 & SDHCI_CAN_VDD2_180) && + !max_current_caps2 && + !IS_ERR(mmc->supply.vqmmc2)) { + /* UHS2 - VDD2 */ + int curr = regulator_get_current_limit(mmc->supply.vqmmc2); + + if (curr > 0) { + /* convert to SDHCI_MAX_CURRENT format */ + curr = curr / 1000; /* convert to mA */ + curr = curr / SDHCI_MAX_CURRENT_MULTIPLIER; + curr = min_t(u32, curr, SDHCI_MAX_CURRENT_LIMIT); + max_current_caps2 = curr; + } + } + + if (!(caps1 & SDHCI_CAN_VDD2_180)) + mmc->caps2 &= ~MMC_CAP2_SD_UHS2; +} + +static void __sdhci_uhs2_remove_host(struct sdhci_host *host, int dead) +{ + if (!mmc_card_uhs2(host->mmc)) + return; + + if (!dead) + sdhci_uhs2_reset(host, SDHCI_UHS2_SW_RESET_FULL); +} + +int sdhci_uhs2_add_host(struct sdhci_host *host) +{ + struct mmc_host *mmc = host->mmc; + int ret; + + ret = sdhci_setup_host(host); + if (ret) + return ret; + + if (host->version >= SDHCI_SPEC_400) + __sdhci_uhs2_add_host_v4(host, host->caps1); + + if ((mmc->caps2 & MMC_CAP2_SD_UHS2) && !host->v4_mode) + /* host doesn't want to enable UHS2 support */ + mmc->caps2 &= ~MMC_CAP2_SD_UHS2; + + /* LED support not implemented for UHS2 */ + host->quirks |= SDHCI_QUIRK_NO_LED; + + ret = __sdhci_add_host(host); + if (ret) + goto cleanup; + + return 0; + +cleanup: + if (host->version >= SDHCI_SPEC_400) + __sdhci_uhs2_remove_host(host, 0); + + sdhci_cleanup_host(host); + + return ret; +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_add_host); + +void sdhci_uhs2_remove_host(struct sdhci_host *host, int dead) +{ + __sdhci_uhs2_remove_host(host, dead); + + sdhci_remove_host(host, dead); +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_remove_host); + MODULE_AUTHOR("Intel, Genesys Logic, Linaro"); MODULE_DESCRIPTION("MMC UHS-II Support"); MODULE_LICENSE("GPL"); diff --git a/drivers/mmc/host/sdhci-uhs2.h b/drivers/mmc/host/sdhci-uhs2.h index 9bd3f610cf8c..0e1866a6bdb6 100644 --- a/drivers/mmc/host/sdhci-uhs2.h +++ b/drivers/mmc/host/sdhci-uhs2.h @@ -181,5 +181,7 @@ void sdhci_uhs2_dump_regs(struct sdhci_host *host); void sdhci_uhs2_reset(struct sdhci_host *host, u16 mask); void sdhci_uhs2_set_power(struct sdhci_host *host, unsigned char mode, unsigned short vdd); void sdhci_uhs2_set_timeout(struct sdhci_host *host, struct mmc_command *cmd); +int sdhci_uhs2_add_host(struct sdhci_host *host); +void sdhci_uhs2_remove_host(struct sdhci_host *host, int dead); #endif /* __SDHCI_UHS2_H */