From patchwork Wed Nov 9 00:26:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Torokhov X-Patchwork-Id: 13036997 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 E409FC4321E for ; Wed, 9 Nov 2022 00:27:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229828AbiKIA1I (ORCPT ); Tue, 8 Nov 2022 19:27:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60052 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229723AbiKIA1F (ORCPT ); Tue, 8 Nov 2022 19:27:05 -0500 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 0494361746; Tue, 8 Nov 2022 16:27:03 -0800 (PST) Received: by mail-pl1-x635.google.com with SMTP id p12so10131425plq.4; Tue, 08 Nov 2022 16:27:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; 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=2AGc3emho2rw8bHzX4XM873wewr02G0nK1D2GVmf5H0=; b=U/sstLWrT7UYMgcp+CLTpwoGQckvH5ozD2NRowfFIlzaQeP+xJn5gBmsSj/xBrMJvF olaMDsSvah6hZlW4XRXSXEuWdVgIbF4lup8Uba82WZ7M+Qc5NTcSTZujXVC7Dwu/6XaX dwJAEQaRN+qX9s+BuEmHyKegqI7Zq9WuzVLxjvnUuQWjpb8Zws4tKMUXGjW0a7LpLUcr 1F0mpMKCXaByofjWJWSsu3BM1itEUaaBrfBN3GUVKu41WvSO9h3XYm9IKst03JTh4wSN TooZDV1tR63OpyUkJ7epgKyB+04laZTEzARqwaM3cfTY3uM4M9d4/5VT5aH9zP9Zjh9W suTA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=2AGc3emho2rw8bHzX4XM873wewr02G0nK1D2GVmf5H0=; b=5M8mus3eQhm4boI+ldHGgWd2F+us9cDR1xI419G9NfBttFMCswcoYOOAncjy3zAn/1 d7GmqaV+K2IDk6IAsgMsVUN1OdOvacyMsChWW7TszrMyDF7y8ph7juqD3lXo36buK6i5 V2cBf5EGLQ6t2zldqky2b4o9VJ4LI57GuEcKfBGlvjUlOgzqJKZY3ZCKhZben7I1vHN3 UM5Aw7oZjxi4PPhqzHUGBCDSVXcAHX6Q/BUWOQ16dcMLGnvyhwizn/Omg9zJ48BRU6/4 qYYgF3KPM6QLldkeB5gxM2bfYB9/0xUtKdkav3m0Eu1GOwF7qeoEV8RJZihbaVX4vd9U t9/g== X-Gm-Message-State: ACrzQf3awmotrDR4LyPi6iBRijQ8hQuVRqgMCAEhcT7AOuxcfjYA1N+5 gVTpjIHitPxlALBuQlsNtxU= X-Google-Smtp-Source: AMsMyM6H3ES1AoHyIqSgqZSWMDhRreAEr6eNgCx+UkMndvMaQBh724iQArFBIjWZoOYJDOo72Q+vaA== X-Received: by 2002:a17:90a:8504:b0:212:c1f4:ddf1 with SMTP id l4-20020a17090a850400b00212c1f4ddf1mr60798416pjn.224.1667953623060; Tue, 08 Nov 2022 16:27:03 -0800 (PST) Received: from dtor-ws.mtv.corp.google.com ([2620:15c:9d:2:9f46:7242:26:f220]) by smtp.gmail.com with ESMTPSA id i65-20020a626d44000000b0056bd737fdf3sm6907324pfc.123.2022.11.08.16.27.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Nov 2022 16:27:02 -0800 (PST) From: Dmitry Torokhov To: Linus Walleij , Andy Shevchenko , Bartosz Golaszewski Cc: linux-acpi@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 4/6] gpiolib: acpi: avoid leaking ACPI details into upper gpiolib layers Date: Tue, 8 Nov 2022 16:26:49 -0800 Message-Id: <20221031-gpiolib-swnode-v2-4-81f55af5fa0e@gmail.com> X-Mailer: git-send-email 2.38.1.431.g37b22c650d-goog In-Reply-To: <20221031-gpiolib-swnode-v2-0-81f55af5fa0e@gmail.com> References: <20221031-gpiolib-swnode-v2-0-81f55af5fa0e@gmail.com> MIME-Version: 1.0 X-Mailer: b4 0.11.0-dev-28747 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org There is no need for the generic parts of GPIOLIB to be aware of implementation details of ACPI-bases lookups. Reviewed-by: Andy Shevchenko Acked-by: Linus Walleij Signed-off-by: Dmitry Torokhov --- drivers/gpio/gpiolib-acpi.c | 51 ++++++++++++++++++++++++++++++++++++++------- drivers/gpio/gpiolib-acpi.h | 46 +++------------------------------------- drivers/gpio/gpiolib.c | 8 ++----- 3 files changed, 48 insertions(+), 57 deletions(-) diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index d51bf2a3203d..1bc386032ca8 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -89,6 +89,30 @@ struct acpi_gpio_chip { struct list_head deferred_req_irqs_list_entry; }; +/** + * struct acpi_gpio_info - ACPI GPIO specific information + * @adev: reference to ACPI device which consumes GPIO resource + * @flags: GPIO initialization flags + * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo + * @pin_config: pin bias as provided by ACPI + * @polarity: interrupt polarity as provided by ACPI + * @triggering: triggering type as provided by ACPI + * @wake_capable: wake capability as provided by ACPI + * @debounce: debounce timeout as provided by ACPI + * @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping + */ +struct acpi_gpio_info { + struct acpi_device *adev; + enum gpiod_flags flags; + bool gpioint; + int pin_config; + int polarity; + int triggering; + bool wake_capable; + unsigned int debounce; + unsigned int quirks; +}; + /* * For GPIO chips which call acpi_gpiochip_request_interrupts() before late_init * (so builtin drivers) we register the ACPI GpioInt IRQ handlers from a @@ -670,8 +694,8 @@ __acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, enum gpiod_flags update) return ret; } -int -acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *info) +static int acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, + struct acpi_gpio_info *info) { struct device *dev = &info->adev->dev; enum gpiod_flags old = *flags; @@ -690,8 +714,8 @@ acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *inf return ret; } -int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags, - struct acpi_gpio_info *info) +static int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags, + struct acpi_gpio_info *info) { switch (info->pin_config) { case ACPI_PIN_CONFIG_PULLUP: @@ -1005,7 +1029,8 @@ struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode, * @fwnode: pointer to an ACPI firmware node to get the GPIO information from * @propname: Property name of the GPIO * @index: index of GpioIo/GpioInt resource (starting from %0) - * @info: info pointer to fill in (optional) + * @lflags: bitmask of gpio_lookup_flags GPIO_* values + * @dflags: gpiod initialization flags * * If @fwnode is an ACPI device object, call acpi_get_gpiod_by_index() for it. * Otherwise (i.e. it is a data-only non-device object), use the property-based @@ -1017,15 +1042,25 @@ struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode, */ struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname, int index, - struct acpi_gpio_info *info) + unsigned long *lflags, + enum gpiod_flags *dflags) { + struct acpi_gpio_info info; struct acpi_device *adev; + struct gpio_desc *desc; adev = to_acpi_device_node(fwnode); if (adev) - return acpi_get_gpiod_by_index(adev, propname, index, info); + desc = acpi_get_gpiod_by_index(adev, propname, index, &info); + else + desc = acpi_get_gpiod_from_data(fwnode, propname, index, &info); - return acpi_get_gpiod_from_data(fwnode, propname, index, info); + if (!IS_ERR(desc)) { + acpi_gpio_update_gpiod_flags(dflags, &info); + acpi_gpio_update_gpiod_lookup_flags(lflags, &info); + } + + return desc; } /** diff --git a/drivers/gpio/gpiolib-acpi.h b/drivers/gpio/gpiolib-acpi.h index bd1f9b92ea9e..8880615327ac 100644 --- a/drivers/gpio/gpiolib-acpi.h +++ b/drivers/gpio/gpiolib-acpi.h @@ -22,30 +22,6 @@ struct gpio_chip; struct gpio_desc; struct gpio_device; -/** - * struct acpi_gpio_info - ACPI GPIO specific information - * @adev: reference to ACPI device which consumes GPIO resource - * @flags: GPIO initialization flags - * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo - * @pin_config: pin bias as provided by ACPI - * @polarity: interrupt polarity as provided by ACPI - * @triggering: triggering type as provided by ACPI - * @wake_capable: wake capability as provided by ACPI - * @debounce: debounce timeout as provided by ACPI - * @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping - */ -struct acpi_gpio_info { - struct acpi_device *adev; - enum gpiod_flags flags; - bool gpioint; - int pin_config; - int polarity; - int triggering; - bool wake_capable; - unsigned int debounce; - unsigned int quirks; -}; - #ifdef CONFIG_ACPI void acpi_gpiochip_add(struct gpio_chip *chip); void acpi_gpiochip_remove(struct gpio_chip *chip); @@ -55,11 +31,6 @@ void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev); void acpi_gpiochip_request_interrupts(struct gpio_chip *chip); void acpi_gpiochip_free_interrupts(struct gpio_chip *chip); -int acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, - struct acpi_gpio_info *info); -int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags, - struct acpi_gpio_info *info); - struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode, const char *con_id, unsigned int idx, @@ -67,7 +38,8 @@ struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode, unsigned long *lookupflags); struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname, int index, - struct acpi_gpio_info *info); + unsigned long *lflags, + enum gpiod_flags *dflags); int acpi_gpio_count(struct device *dev, const char *con_id); #else @@ -82,18 +54,6 @@ acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { } static inline void acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { } -static inline int -acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *info) -{ - return 0; -} -static inline int -acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags, - struct acpi_gpio_info *info) -{ - return 0; -} - static inline struct gpio_desc * acpi_find_gpio(struct fwnode_handle *fwnode, const char *con_id, unsigned int idx, enum gpiod_flags *dflags, @@ -103,7 +63,7 @@ acpi_find_gpio(struct fwnode_handle *fwnode, const char *con_id, } static inline struct gpio_desc * acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname, - int index, struct acpi_gpio_info *info) + int index, unsigned long *lflags, enum gpiod_flags *dflags) { return ERR_PTR(-ENXIO); } diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index eebcdaca5e06..f0a7a59ac630 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -3838,14 +3838,10 @@ static struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, label); return desc; } else if (is_acpi_node(fwnode)) { - struct acpi_gpio_info info; - - desc = acpi_node_get_gpiod(fwnode, propname, index, &info); + desc = acpi_node_get_gpiod(fwnode, propname, index, + &lflags, &dflags); if (IS_ERR(desc)) return desc; - - acpi_gpio_update_gpiod_flags(&dflags, &info); - acpi_gpio_update_gpiod_lookup_flags(&lflags, &info); } else { return ERR_PTR(-EINVAL); }