linux-kernel - [PATCH 1/1] gpio: tegra186: Set fwnode of the GPIO chip

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Date:   Mon, 9 Oct 2023 10:38:58 -0700
From:   Dipen Patel <dipenp@...dia.com>
To:     <linus.walleij@...aro.org>, <brgl@...ev.pl>, <andy@...nel.org>,
        <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <linux-gpio@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     Dipen Patel <dipenp@...dia.com>
Subject: [PATCH 1/1] gpio: tegra186: Set fwnode of the GPIO chip

Any driver that depends on the GPIO match function to locate the GPIO
controller, it has to use the fwnode from the gpio_chip structure. But
with [1], it is GPIO providers job to set any members of the gpio_chip
structure. This patch addresses that.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/pateldipen1984/linux.git/patch/drivers/gpio/gpiolib.c?id=daecca4b8433d47f0db4933bcc0f283d530ba22e

Signed-off-by: Dipen Patel <dipenp@...dia.com>
---
 drivers/gpio/gpio-tegra186.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpio/gpio-tegra186.c b/drivers/gpio/gpio-tegra186.c
index d87dd06db40d..86ad34e07841 100644
--- a/drivers/gpio/gpio-tegra186.c
+++ b/drivers/gpio/gpio-tegra186.c
@@ -989,6 +989,12 @@ static int tegra186_gpio_probe(struct platform_device *pdev)
 		offset += port->pins;
 	}
 
+	/*
+	 * This is needed for driver using gpio device matching where it
+	 * has to use gpio_chip fwnode to match the gpio controller.
+	 */
+	gpio->gpio.fwnode = of_node_to_fwnode(pdev->dev.of_node);
+
 	return devm_gpiochip_add_data(&pdev->dev, &gpio->gpio, gpio);
 }
 
-- 
2.25.1