linux-kernel - [PATCH RESEND 01/14] gpio: generic: provide to_gpio_generic

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Message-Id: <20250812-gpio-mmio-gpio-conv-v1-1-8492f4a4c1e4@linaro.org>
Date: Tue, 12 Aug 2025 11:57:56 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Yinbo Zhu <zhuyinbo@...ngson.cn>, 
 Hoan Tran <hoan@...amperecomputing.com>, 
 Manivannan Sadhasivam <mani@...nel.org>, Yang Shen <shenyang39@...wei.com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-unisoc@...ts.infradead.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH RESEND 01/14] gpio: generic: provide to_gpio_generic_chip()

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

Provide a helper allowing to convert a struct gpio_chip address to the
struct gpio_generic_chip that wraps it.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 include/linux/gpio/generic.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/gpio/generic.h b/include/linux/gpio/generic.h
index f3a8db4598bb59f1dba4fbebace24dc10be44ae4..5a85ecbef8d234d9cf0c2f1db7a97f5f3781b2e4 100644
--- a/include/linux/gpio/generic.h
+++ b/include/linux/gpio/generic.h
@@ -55,6 +55,12 @@ struct gpio_generic_chip {
 	struct gpio_chip gc;
 };
 
+static inline struct gpio_generic_chip *
+to_gpio_generic_chip(struct gpio_chip *gc)
+{
+	return container_of(gc, struct gpio_generic_chip, gc);
+}
+
 /**
  * gpio_generic_chip_init() - Initialize a generic GPIO chip.
  * @chip: Generic GPIO chip to set up.

-- 
2.48.1