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[24.56.189.219]) by smtp.gmail.com with ESMTPSA id 18-20020a056e020cb200b002f16e7021f6sm4077334ilg.22.2022.09.12.15.13.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Sep 2022 15:13:51 -0700 (PDT) From: Raul E Rangel To: linux-acpi@vger.kernel.org, linux-input@vger.kernel.org Cc: andriy.shevchenko@linux.intel.com, jingle.wu@emc.com.tw, mario.limonciello@amd.com, timvp@google.com, linus.walleij@linaro.org, hdegoede@redhat.com, rafael@kernel.org, Raul E Rangel , Asmaa Mnebhi , Bartosz Golaszewski , "David S. Miller" , David Thompson , Eric Dumazet , Jakub Kicinski , Len Brown , Lu Wei , Mika Westerberg , Paolo Abeni , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v2 05/13] gpiolib: acpi: Add wake_capable parameter to acpi_dev_gpio_irq_get_by Date: Mon, 12 Sep 2022 16:13:09 -0600 Message-Id: <20220912160931.v2.5.I4ff95ba7e884a486d7814ee888bf864be2ebdef4@changeid> X-Mailer: git-send-email 2.37.2.789.g6183377224-goog In-Reply-To: <20220912221317.2775651-1-rrangel@chromium.org> References: <20220912221317.2775651-1-rrangel@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org The ACPI spec defines the SharedAndWake and ExclusiveAndWake share type keywords. This is an indication that the GPIO IRQ can also be used as a wake source. This change exposes the wake_capable bit so drivers can correctly enable wake functionality instead of making an assumption. Signed-off-by: Raul E Rangel --- Changes in v2: - Fixed call site in mlxbf_gige_probe drivers/gpio/gpio-pca953x.c | 3 ++- drivers/gpio/gpiolib-acpi.c | 11 ++++++++++- drivers/gpio/gpiolib-acpi.h | 2 ++ .../ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c | 3 ++- include/linux/acpi.h | 14 +++++++++++--- 5 files changed, 27 insertions(+), 6 deletions(-) diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index ecd7d169470b06..df02c3eb34a294 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -130,7 +130,8 @@ static int pca953x_acpi_get_irq(struct device *dev) if (ret) dev_warn(dev, "can't add GPIO ACPI mapping\n"); - ret = acpi_dev_gpio_irq_get_by(ACPI_COMPANION(dev), "irq-gpios", 0); + ret = acpi_dev_gpio_irq_get_by(ACPI_COMPANION(dev), "irq-gpios", 0, + NULL); if (ret < 0) return ret; diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 9be1376f9a627f..5cda2fcf7f43df 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -741,6 +741,7 @@ static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data) lookup->info.pin_config = agpio->pin_config; lookup->info.debounce = agpio->debounce_timeout; lookup->info.gpioint = gpioint; + lookup->info.wake_capable = agpio->wake_capable; /* * Polarity and triggering are only specified for GpioInt @@ -991,6 +992,7 @@ struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode, * @adev: pointer to a ACPI device to get IRQ from * @name: optional name of GpioInt resource * @index: index of GpioInt resource (starting from %0) + * @wake_capable: Set to 1 if the IRQ is wake capable * * If the device has one or more GpioInt resources, this function can be * used to translate from the GPIO offset in the resource to the Linux IRQ @@ -1002,9 +1004,13 @@ struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode, * The function takes optional @name parameter. If the resource has a property * name, then only those will be taken into account. * + * The GPIO is considered wake capable if GpioInt specifies SharedAndWake or + * ExclusiveAndWake. + * * Return: Linux IRQ number (> %0) on success, negative errno on failure. */ -int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name, int index) +int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name, + int index, int *wake_capable) { int idx, i; unsigned int irq_flags; @@ -1061,6 +1067,9 @@ int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name, int ind dev_dbg(&adev->dev, "IRQ %d already in use\n", irq); } + if (wake_capable) + *wake_capable = info.wake_capable; + return irq; } diff --git a/drivers/gpio/gpiolib-acpi.h b/drivers/gpio/gpiolib-acpi.h index e476558d947136..1ac6816839dbce 100644 --- a/drivers/gpio/gpiolib-acpi.h +++ b/drivers/gpio/gpiolib-acpi.h @@ -18,6 +18,7 @@ struct acpi_device; * @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 */ @@ -28,6 +29,7 @@ struct acpi_gpio_info { int pin_config; int polarity; int triggering; + bool wake_capable; unsigned int debounce; unsigned int quirks; }; diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c index b03e1c66bac0d9..fa38271718d9e7 100644 --- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c +++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c @@ -340,7 +340,8 @@ static int mlxbf_gige_probe(struct platform_device *pdev) priv->rx_irq = platform_get_irq(pdev, MLXBF_GIGE_RECEIVE_PKT_INTR_IDX); priv->llu_plu_irq = platform_get_irq(pdev, MLXBF_GIGE_LLU_PLU_INTR_IDX); - phy_irq = acpi_dev_gpio_irq_get_by(ACPI_COMPANION(&pdev->dev), "phy-gpios", 0); + phy_irq = acpi_dev_gpio_irq_get_by(ACPI_COMPANION(&pdev->dev), + "phy-gpios", 0, NULL); if (phy_irq < 0) { dev_err(&pdev->dev, "Error getting PHY irq. Use polling instead"); phy_irq = PHY_POLL; diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 6f64b2f3dc5479..7ee946758c5bcc 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -1202,7 +1202,8 @@ bool acpi_gpio_get_irq_resource(struct acpi_resource *ares, struct acpi_resource_gpio **agpio); bool acpi_gpio_get_io_resource(struct acpi_resource *ares, struct acpi_resource_gpio **agpio); -int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name, int index); +int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name, + int index, int *wake_capable); #else static inline bool acpi_gpio_get_irq_resource(struct acpi_resource *ares, struct acpi_resource_gpio **agpio) @@ -1215,7 +1216,8 @@ static inline bool acpi_gpio_get_io_resource(struct acpi_resource *ares, return false; } static inline int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, - const char *name, int index) + const char *name, int index, + int *wake_capable) { return -ENXIO; } @@ -1223,7 +1225,13 @@ static inline int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, static inline int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index) { - return acpi_dev_gpio_irq_get_by(adev, NULL, index); + return acpi_dev_gpio_irq_get_by(adev, NULL, index, NULL); +} + +static inline int acpi_dev_gpio_irq_get_wake(struct acpi_device *adev, + int index, int *wake_capable) +{ + return acpi_dev_gpio_irq_get_by(adev, NULL, index, wake_capable); } /* Device properties */