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From: Bartosz Golaszewski <brgl@bgdev.pl>
To: "Ahmad Fatoum" <a.fatoum@pengutronix.de>,
	"Kent Gibson" <warthog618@gmail.com>,
	"Jan Lübbe" <jlu@pengutronix.de>, "Marek Vasut" <marex@denx.de>,
	"Geert Uytterhoeven" <geert+renesas@glider.be>,
	"Linus Walleij" <linus.walleij@linaro.org>,
	"Andy Shevchenko" <andriy.shevchenko@intel.com>,
	"Bartosz Golaszewski" <brgl@bgdev.pl>
Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
	 Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Subject: [PATCH v4 10/10] gpio: TODO: remove the task for the sysfs rework
Date: Fri, 04 Jul 2025 14:58:57 +0200	[thread overview]
Message-ID: <20250704-gpio-sysfs-chip-export-v4-10-9289d8758243@linaro.org> (raw)
In-Reply-To: <20250704-gpio-sysfs-chip-export-v4-0-9289d8758243@linaro.org>

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

Remove the completed task tracking the rework of the sysfs interface and
add a new task to track the removal of the legacy bits and pieces.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 drivers/gpio/TODO | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/gpio/TODO b/drivers/gpio/TODO
index ef53892cb44d7c01d100f10f1b805c0aca561b46..7a09a4f58551b51c55938c278a47a04e86ef4106 100644
--- a/drivers/gpio/TODO
+++ b/drivers/gpio/TODO
@@ -188,16 +188,12 @@ remove the old ones and finally rename the new ones back to the old names.
 
 -------------------------------------------------------------------------------
 
-Extend the sysfs ABI to allow exporting lines by their HW offsets
+Remove legacy sysfs features
 
-The need to support the sysfs GPIO class is one of the main obstacles to
-removing the global GPIO numberspace from the kernel. In order to wean users
-off using global numbers from user-space, extend the existing interface with
-new per-gpiochip export/unexport attributes that allow to refer to GPIOs using
-their hardware offsets within the chip.
-
-Encourage users to switch to using them and eventually remove the existing
-global export/unexport attribues.
+We have two parallel per-chip class devices and per-exported-line attribute
+groups in sysfs. One is using the obsolete global GPIO numberspace and the
+second relies on hardware offsets of pins within the chip. Remove the former
+once user-space has switched to using the latter.
 
 -------------------------------------------------------------------------------
 

-- 
2.48.1


  parent reply	other threads:[~2025-07-04 12:59 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-04 12:58 [PATCH v4 00/10] gpio: sysfs: add a per-chip export/unexport attribute pair Bartosz Golaszewski
2025-07-04 12:58 ` [PATCH v4 01/10] gpio: sysfs: use gpiod_is_equal() to compare GPIO descriptors Bartosz Golaszewski
2025-07-04 12:58 ` [PATCH v4 02/10] gpio: sysfs: add a parallel class device for each GPIO chip using device IDs Bartosz Golaszewski
2025-07-04 12:58 ` [PATCH v4 03/10] gpio: sysfs: only get the dirent reference for the value attr once Bartosz Golaszewski
2025-07-04 12:58 ` [PATCH v4 04/10] gpio: sysfs: pass gpiod_data directly to internal GPIO sysfs functions Bartosz Golaszewski
2025-07-04 12:58 ` [PATCH v4 05/10] gpio: sysfs: rename the data variable in gpiod_(un)export() Bartosz Golaszewski
2025-07-04 12:58 ` [PATCH v4 06/10] gpio: sysfs: don't use driver data in sysfs callbacks for line attributes Bartosz Golaszewski
2025-07-04 12:58 ` [PATCH v4 07/10] gpio: sysfs: don't look up exported lines as class devices Bartosz Golaszewski
2025-07-04 12:58 ` [PATCH v4 08/10] gpio: sysfs: export the GPIO directory locally in the gpiochip<id> directory Bartosz Golaszewski
2025-07-04 12:58 ` [PATCH v4 09/10] gpio: sysfs: allow disabling the legacy parts of the GPIO sysfs interface Bartosz Golaszewski
2025-07-04 12:58 ` Bartosz Golaszewski [this message]
2025-07-13  8:48 ` [PATCH v4 00/10] gpio: sysfs: add a per-chip export/unexport attribute pair Bartosz Golaszewski
2025-07-14  1:38   ` Kent Gibson
2025-07-16  8:26     ` Bartosz Golaszewski
2025-07-16 12:45   ` Jan Lübbe
2025-07-16  8:28 ` Bartosz Golaszewski

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