linux-kernel - [PATCH 0/2] leds: gpio: Add devlink between the leds-gpio device and the gpio used.

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Message-ID: <20240220111111.133826-1-herve.codina@bootlin.com>
Date: Tue, 20 Feb 2024 12:11:05 +0100
From: Herve Codina <herve.codina@...tlin.com>
To: Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Pavel Machek <pavel@....cz>,
	Lee Jones <lee@...nel.org>
Cc: linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-leds@...r.kernel.org,
	Luca Ceresoli <luca.ceresoli@...tlin.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Herve Codina <herve.codina@...tlin.com>
Subject: [PATCH 0/2] leds: gpio: Add devlink between the leds-gpio device and the gpio used.

Hi,

When a gpio used by the leds-gpio device is removed, the leds-gpio
device continues to use this gpio. Also, when the gpio is back, the
leds-gpio still uses the old removed gpio.

A consumer/supplier relationship is missing between the leds-gpio device
(consumer) and the gpio used (supplier).

This series adds an addionnal devlink between this two device.
With this link when the gpio is removed, the leds-gpio device is also
removed.

Best regards,
Hervé Codina

Herve Codina (2):
  gpiolib: Introduce gpiod_device_add_link()
  leds: gpio: Add devlinks between the gpio consumed and the gpio leds
    device

 drivers/gpio/gpiolib.c        | 32 ++++++++++++++++++++++++++++++++
 drivers/leds/leds-gpio.c      | 15 +++++++++++++++
 include/linux/gpio/consumer.h |  5 +++++
 3 files changed, 52 insertions(+)

-- 
2.43.0