Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
IronPort-SDR: Ry/Sf24IzWpYMHkJHlwEryvNVq7qmY/fnWvmYc3wkwrncwg2QtVRO2xoOWUDzpphk59YQaXCmI
 rcQ6lt23SowA==
IronPort-SDR: 5B9uJ4FbXNqRvB+2m0JkeVbnJXwMNOl1v+uc2PPGp8wmRlRUUdtQUlW7T2EmxeF2vSyl7YGp9Q
 z3vzH3gi/Bew==
From:   Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To:     Mika Westerberg <mika.westerberg@linux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org
Cc:     Marc Zyngier <maz@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        "Rafael J. Wysocki" <rafael@kernel.org>
Subject: [PATCH v6 4/6] gpiolib: Introduce acpi_gpio_dev_init() and call it from core
Date:   Tue,  9 Mar 2021 11:37:34 +0200
Message-Id: <20210309093736.67925-5-andriy.shevchenko@linux.intel.com>
In-Reply-To: <20210309093736.67925-1-andriy.shevchenko@linux.intel.com>
References: <20210309093736.67925-1-andriy.shevchenko@linux.intel.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

In the ACPI case we may use the firmware node in the similar way
as it's done for OF case. We may use that fwnode for other purposes
in the future.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/gpio/gpiolib-acpi.c | 7 +++++++
 drivers/gpio/gpiolib-acpi.h | 4 ++++
 drivers/gpio/gpiolib.c      | 1 +
 3 files changed, 12 insertions(+)

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 1aacd2a5a1fd..21750be9c489 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -1291,6 +1291,13 @@ void acpi_gpiochip_remove(struct gpio_chip *chip)
 	kfree(acpi_gpio);
 }
 
+void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev)
+{
+	/* Set default fwnode to parent's one if present */
+	if (gc->parent)
+		ACPI_COMPANION_SET(&gdev->dev, ACPI_COMPANION(gc->parent));
+}
+
 static int acpi_gpio_package_count(const union acpi_object *obj)
 {
 	const union acpi_object *element = obj->package.elements;
diff --git a/drivers/gpio/gpiolib-acpi.h b/drivers/gpio/gpiolib-acpi.h
index e2edb632b2cc..e476558d9471 100644
--- a/drivers/gpio/gpiolib-acpi.h
+++ b/drivers/gpio/gpiolib-acpi.h
@@ -36,6 +36,8 @@ struct acpi_gpio_info {
 void acpi_gpiochip_add(struct gpio_chip *chip);
 void acpi_gpiochip_remove(struct gpio_chip *chip);
 
+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);
 
@@ -58,6 +60,8 @@ int acpi_gpio_count(struct device *dev, const char *con_id);
 static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
 static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
 
+static inline void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev) { }
+
 static inline void
 acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
 
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 41a57f042843..1853075df741 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -590,6 +590,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
 	gc->gpiodev = gdev;
 
 	of_gpio_dev_init(gc, gdev);
+	acpi_gpio_dev_init(gc, gdev);
 
 	gdev->id = ida_alloc(&gpio_ida, GFP_KERNEL);
 	if (gdev->id < 0) {
-- 
2.30.1