From patchwork Wed Oct 6 03:53:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 12538507 X-Patchwork-Delegate: johannes@sipsolutions.net 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 63BF0C433F5 for ; Wed, 6 Oct 2021 03:55:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4EFE1611C1 for ; Wed, 6 Oct 2021 03:55:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237820AbhJFD5H (ORCPT ); Tue, 5 Oct 2021 23:57:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32958 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237324AbhJFD4I (ORCPT ); Tue, 5 Oct 2021 23:56:08 -0400 Received: from mail-lf1-x133.google.com (mail-lf1-x133.google.com [IPv6:2a00:1450:4864:20::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 57FA1C06178A for ; Tue, 5 Oct 2021 20:54:16 -0700 (PDT) Received: by mail-lf1-x133.google.com with SMTP id y26so4461359lfa.11 for ; Tue, 05 Oct 2021 20:54:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=9lmj4z2XmvtgOeyuCcLAR8+/FQoqDUZMLX1DvXWCDtk=; b=cMeYaNyTbMR8bGLWrM98suMs6L0Yshkz2dJCZMFbLzamLV+tOYwNg1q0EFd9rZZwzK s8gV/uthkE5+RN9/bQV52t78R7tU+hMwu5HPOWsXPtkNGO7hLm/LNVw8Hp2TBYl00uzz iymzZ1siy3Li2jScYl44aSSBG9jSWzs9v/KmkCDSZz9zzaaglKVqTaly7cIpwImQleY3 Jt4e6dBAOpLzYca9ka7Px/snHAZI4r9SdZ+9YGAvn14Rplfp5SBZVVELE7D81vuDlhfm aT8G1R+idv20rIeIr63bDBletPmiwDxaQNaFYqFaWNUbKY54EfayHITiwHWGc7opOUh9 we0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=9lmj4z2XmvtgOeyuCcLAR8+/FQoqDUZMLX1DvXWCDtk=; b=T+aTE4Vza08SCFLRvl0W449G/rv2FXFx0H96wJU3KeZdMuNEY8IJCIQGpGvoHf0tGz YRlKLhUb0c3sVgg9vayo1KbsbqjBx1aNjtxceAKX5tSI+kHkVANHelSb+/PfXQ9B9//t kKvp+ZOPFssgfpqfBTXHz45IrAQUSTI4RNPjmUsXBnFRzUkE5ZzMbH8tCKun913REUDd 2QIrlvR+wPYCMuLJYoC4Bama+zSvu2Mtn7JsXeh2v8tORKyf0Kej+6wfu+IB48f9sRC6 /6TS1/k/aGt2DkuurYjCUbpPR1Yr3aywaYfXD3OejLN8qGFPZ0DJi8PIm11hDjdSN9FJ WBvA== X-Gm-Message-State: AOAM532jnNndVz6gXXnaxac/V7/lSK+hqdYabdPDXQKAKYfvrBJ2ncd3 e0m0nEtg8l8zT/uMQh/LBa14Hg== X-Google-Smtp-Source: ABdhPJzaab7eXLdHwpE+7i1SfolFjAbanjbGoslkWp1x8IKRGRFcoRzPguB7/mw2H4Kzt92jpXGVqA== X-Received: by 2002:a2e:7f14:: with SMTP id a20mr27460466ljd.259.1633492454543; Tue, 05 Oct 2021 20:54:14 -0700 (PDT) Received: from eriador.lan ([37.153.55.125]) by smtp.gmail.com with ESMTPSA id s4sm2142967lfd.103.2021.10.05.20.54.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Oct 2021 20:54:14 -0700 (PDT) From: Dmitry Baryshkov To: Andy Gross , Bjorn Andersson , Ulf Hansson , Marcel Holtmann , Johan Hedberg , Luiz Augusto von Dentz , Kalle Valo , "David S. Miller" , Jakub Kicinski , Stanimir Varbanov Cc: linux-arm-msm@vger.kernel.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-bluetooth@vger.kernel.org, ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v1 04/15] mmc: core: switch to new pwrseq subsystem Date: Wed, 6 Oct 2021 06:53:56 +0300 Message-Id: <20211006035407.1147909-5-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211006035407.1147909-1-dmitry.baryshkov@linaro.org> References: <20211006035407.1147909-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Drop old MMC pwrseq code and use new pwrseq subsystem instead. Individual drivers are already ported to new subsystem. Signed-off-by: Dmitry Baryshkov --- drivers/mmc/core/Makefile | 1 - drivers/mmc/core/core.c | 9 ++- drivers/mmc/core/host.c | 8 ++- drivers/mmc/core/mmc.c | 3 +- drivers/mmc/core/pwrseq.c | 117 ------------------------------------ drivers/mmc/core/pwrseq.h | 58 ------------------ drivers/power/pwrseq/core.c | 8 +++ include/linux/mmc/host.h | 4 +- 8 files changed, 20 insertions(+), 188 deletions(-) delete mode 100644 drivers/mmc/core/pwrseq.c delete mode 100644 drivers/mmc/core/pwrseq.h diff --git a/drivers/mmc/core/Makefile b/drivers/mmc/core/Makefile index 322eb69bd00e..a504d873cf8e 100644 --- a/drivers/mmc/core/Makefile +++ b/drivers/mmc/core/Makefile @@ -9,7 +9,6 @@ mmc_core-y := core.o bus.o host.o \ sdio.o sdio_ops.o sdio_bus.o \ sdio_cis.o sdio_io.o sdio_irq.o \ slot-gpio.o regulator.o -mmc_core-$(CONFIG_OF) += pwrseq.o mmc_core-$(CONFIG_DEBUG_FS) += debugfs.o obj-$(CONFIG_MMC_BLOCK) += mmc_block.o mmc_block-objs := block.o queue.o diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 240c5af793dc..c4b08067ab9f 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -41,7 +41,6 @@ #include "bus.h" #include "host.h" #include "sdio_bus.h" -#include "pwrseq.h" #include "mmc_ops.h" #include "sd_ops.h" @@ -1322,7 +1321,7 @@ void mmc_power_up(struct mmc_host *host, u32 ocr) if (host->ios.power_mode == MMC_POWER_ON) return; - mmc_pwrseq_pre_power_on(host); + pwrseq_pre_power_on(host->pwrseq); host->ios.vdd = fls(ocr) - 1; host->ios.power_mode = MMC_POWER_UP; @@ -1337,7 +1336,7 @@ void mmc_power_up(struct mmc_host *host, u32 ocr) */ mmc_delay(host->ios.power_delay_ms); - mmc_pwrseq_post_power_on(host); + pwrseq_power_on(host->pwrseq); host->ios.clock = host->f_init; @@ -1356,7 +1355,7 @@ void mmc_power_off(struct mmc_host *host) if (host->ios.power_mode == MMC_POWER_OFF) return; - mmc_pwrseq_power_off(host); + pwrseq_power_off(host->pwrseq); host->ios.clock = 0; host->ios.vdd = 0; @@ -1986,7 +1985,7 @@ EXPORT_SYMBOL(mmc_set_blocklen); static void mmc_hw_reset_for_init(struct mmc_host *host) { - mmc_pwrseq_reset(host); + pwrseq_reset(host->pwrseq); if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset) return; diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index d4683b1d263f..aa5326db7c60 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -28,7 +28,6 @@ #include "crypto.h" #include "host.h" #include "slot-gpio.h" -#include "pwrseq.h" #include "sdio_ops.h" #define cls_dev_to_mmc_host(d) container_of(d, struct mmc_host, class_dev) @@ -422,7 +421,11 @@ int mmc_of_parse(struct mmc_host *host) device_property_read_u32(dev, "post-power-on-delay-ms", &host->ios.power_delay_ms); - return mmc_pwrseq_alloc(host); + host->pwrseq = devm_pwrseq_get(dev, "mmc"); + if (IS_ERR(host->pwrseq)) + return PTR_ERR(host->pwrseq); + + return 0; } EXPORT_SYMBOL(mmc_of_parse); @@ -641,7 +644,6 @@ EXPORT_SYMBOL(mmc_remove_host); */ void mmc_free_host(struct mmc_host *host) { - mmc_pwrseq_free(host); put_device(&host->class_dev); } diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 29e58ffae379..d7e1c083fa12 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -24,7 +24,6 @@ #include "mmc_ops.h" #include "quirks.h" #include "sd_ops.h" -#include "pwrseq.h" #define DEFAULT_CMD6_TIMEOUT_MS 500 #define MIN_CACHE_EN_TIMEOUT_MS 1600 @@ -2222,7 +2221,7 @@ static int _mmc_hw_reset(struct mmc_host *host) } else { /* Do a brute force power cycle */ mmc_power_cycle(host, card->ocr); - mmc_pwrseq_reset(host); + pwrseq_reset(host->pwrseq); } return mmc_init_card(host, card->ocr, card); } diff --git a/drivers/mmc/core/pwrseq.c b/drivers/mmc/core/pwrseq.c deleted file mode 100644 index ef675f364bf0..000000000000 --- a/drivers/mmc/core/pwrseq.c +++ /dev/null @@ -1,117 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 2014 Linaro Ltd - * - * Author: Ulf Hansson - * - * MMC power sequence management - */ -#include -#include -#include -#include - -#include - -#include "pwrseq.h" - -static DEFINE_MUTEX(pwrseq_list_mutex); -static LIST_HEAD(pwrseq_list); - -int mmc_pwrseq_alloc(struct mmc_host *host) -{ - struct device_node *np; - struct mmc_pwrseq *p; - - np = of_parse_phandle(host->parent->of_node, "mmc-pwrseq", 0); - if (!np) - return 0; - - mutex_lock(&pwrseq_list_mutex); - list_for_each_entry(p, &pwrseq_list, pwrseq_node) { - if (p->dev->of_node == np) { - if (!try_module_get(p->owner)) - dev_err(host->parent, - "increasing module refcount failed\n"); - else - host->pwrseq = p; - - break; - } - } - - of_node_put(np); - mutex_unlock(&pwrseq_list_mutex); - - if (!host->pwrseq) - return -EPROBE_DEFER; - - dev_info(host->parent, "allocated mmc-pwrseq\n"); - - return 0; -} - -void mmc_pwrseq_pre_power_on(struct mmc_host *host) -{ - struct mmc_pwrseq *pwrseq = host->pwrseq; - - if (pwrseq && pwrseq->ops->pre_power_on) - pwrseq->ops->pre_power_on(host); -} - -void mmc_pwrseq_post_power_on(struct mmc_host *host) -{ - struct mmc_pwrseq *pwrseq = host->pwrseq; - - if (pwrseq && pwrseq->ops->post_power_on) - pwrseq->ops->post_power_on(host); -} - -void mmc_pwrseq_power_off(struct mmc_host *host) -{ - struct mmc_pwrseq *pwrseq = host->pwrseq; - - if (pwrseq && pwrseq->ops->power_off) - pwrseq->ops->power_off(host); -} - -void mmc_pwrseq_reset(struct mmc_host *host) -{ - struct mmc_pwrseq *pwrseq = host->pwrseq; - - if (pwrseq && pwrseq->ops->reset) - pwrseq->ops->reset(host); -} - -void mmc_pwrseq_free(struct mmc_host *host) -{ - struct mmc_pwrseq *pwrseq = host->pwrseq; - - if (pwrseq) { - module_put(pwrseq->owner); - host->pwrseq = NULL; - } -} - -int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq) -{ - if (!pwrseq || !pwrseq->ops || !pwrseq->dev) - return -EINVAL; - - mutex_lock(&pwrseq_list_mutex); - list_add(&pwrseq->pwrseq_node, &pwrseq_list); - mutex_unlock(&pwrseq_list_mutex); - - return 0; -} -EXPORT_SYMBOL_GPL(mmc_pwrseq_register); - -void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq) -{ - if (pwrseq) { - mutex_lock(&pwrseq_list_mutex); - list_del(&pwrseq->pwrseq_node); - mutex_unlock(&pwrseq_list_mutex); - } -} -EXPORT_SYMBOL_GPL(mmc_pwrseq_unregister); diff --git a/drivers/mmc/core/pwrseq.h b/drivers/mmc/core/pwrseq.h deleted file mode 100644 index f3bb103db9ad..000000000000 --- a/drivers/mmc/core/pwrseq.h +++ /dev/null @@ -1,58 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (C) 2014 Linaro Ltd - * - * Author: Ulf Hansson - */ -#ifndef _MMC_CORE_PWRSEQ_H -#define _MMC_CORE_PWRSEQ_H - -#include - -struct mmc_host; -struct device; -struct module; - -struct mmc_pwrseq_ops { - void (*pre_power_on)(struct mmc_host *host); - void (*post_power_on)(struct mmc_host *host); - void (*power_off)(struct mmc_host *host); - void (*reset)(struct mmc_host *host); -}; - -struct mmc_pwrseq { - const struct mmc_pwrseq_ops *ops; - struct device *dev; - struct list_head pwrseq_node; - struct module *owner; -}; - -#ifdef CONFIG_OF - -int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq); -void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq); - -int mmc_pwrseq_alloc(struct mmc_host *host); -void mmc_pwrseq_pre_power_on(struct mmc_host *host); -void mmc_pwrseq_post_power_on(struct mmc_host *host); -void mmc_pwrseq_power_off(struct mmc_host *host); -void mmc_pwrseq_reset(struct mmc_host *host); -void mmc_pwrseq_free(struct mmc_host *host); - -#else - -static inline int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq) -{ - return -ENOSYS; -} -static inline void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq) {} -static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; } -static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {} -static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {} -static inline void mmc_pwrseq_power_off(struct mmc_host *host) {} -static inline void mmc_pwrseq_reset(struct mmc_host *host) {} -static inline void mmc_pwrseq_free(struct mmc_host *host) {} - -#endif - -#endif diff --git a/drivers/power/pwrseq/core.c b/drivers/power/pwrseq/core.c index d29b4b97b95c..0aaba4e79a44 100644 --- a/drivers/power/pwrseq/core.c +++ b/drivers/power/pwrseq/core.c @@ -68,6 +68,14 @@ static struct pwrseq *_of_pwrseq_get(struct device *dev, const char *id) snprintf(prop_name, sizeof(prop_name), "%s-pwrseq", id); ret = of_parse_phandle_with_args(dev->of_node, prop_name, "#pwrseq-cells", 0, &args); + + /* + * Parsing failed. Try locating old bindings for mmc-pwrseq, which did + * not use #pwrseq-cells. + */ + if (ret == -EINVAL && !strcmp(id, "mmc")) + ret = of_parse_phandle_with_args(dev->of_node, prop_name, NULL, 0, &args); + if (ret == -ENOENT) return NULL; else if (ret < 0) diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 0c0c9a0fdf57..f5daee6c1d7b 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -16,6 +16,7 @@ #include #include #include +#include struct mmc_ios { unsigned int clock; /* clock rate */ @@ -278,7 +279,6 @@ struct mmc_context_info { }; struct regulator; -struct mmc_pwrseq; struct mmc_supply { struct regulator *vmmc; /* Card power supply */ @@ -294,7 +294,7 @@ struct mmc_host { struct device class_dev; int index; const struct mmc_host_ops *ops; - struct mmc_pwrseq *pwrseq; + struct pwrseq *pwrseq; unsigned int f_min; unsigned int f_max; unsigned int f_init;