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>,
"Bartosz Golaszewski" <brgl@bgdev.pl>
Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Subject: [PATCH RFC/RFT 02/15] Documentation: gpio: document the active_low field in the sysfs ABI
Date: Tue, 10 Jun 2025 16:38:17 +0200 [thread overview]
Message-ID: <20250610-gpio-sysfs-chip-export-v1-2-a8c7aa4478b1@linaro.org> (raw)
In-Reply-To: <20250610-gpio-sysfs-chip-export-v1-0-a8c7aa4478b1@linaro.org>
From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Exported GPIO lines also have the active_low attribute which is not
documented. Add a short mention for it.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
Documentation/ABI/obsolete/sysfs-gpio | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/ABI/obsolete/sysfs-gpio b/Documentation/ABI/obsolete/sysfs-gpio
index 8203bc2128db7eb9ea6724884e680ed4b669853c..480316fee6d80fb7a0ed61706559838591ec0932 100644
--- a/Documentation/ABI/obsolete/sysfs-gpio
+++ b/Documentation/ABI/obsolete/sysfs-gpio
@@ -22,6 +22,7 @@ Description:
/value ... always readable, writes fail for input GPIOs
/direction ... r/w as: in, out (default low); write: high, low
/edge ... r/w as: none, falling, rising, both
+ /active_low ... r/w as: 0, 1
/gpiochipN ... for each gpiochip; #N is its first GPIO
/base ... (r/o) same as N
/label ... (r/o) descriptive, not necessarily unique
--
2.48.1
next prev parent reply other threads:[~2025-06-10 14:38 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-10 14:38 [PATCH RFC/RFT 00/15] gpio: sysfs: add a per-chip export/unexport attribute pair Bartosz Golaszewski
2025-06-10 14:38 ` [PATCH RFC/RFT 01/15] Documentation: gpio: undocument removed behavior Bartosz Golaszewski
2025-06-11 8:15 ` Linus Walleij
2025-06-10 14:38 ` Bartosz Golaszewski [this message]
2025-06-11 8:15 ` [PATCH RFC/RFT 02/15] Documentation: gpio: document the active_low field in the sysfs ABI Linus Walleij
2025-06-10 14:38 ` [PATCH RFC/RFT 03/15] gpio: sysfs: call mutex_destroy() in gpiod_unexport() Bartosz Golaszewski
2025-06-11 8:16 ` Linus Walleij
2025-06-10 14:38 ` [PATCH RFC/RFT 04/15] gpio: sysfs: refactor the coding style Bartosz Golaszewski
2025-06-11 8:16 ` Linus Walleij
2025-06-10 14:38 ` [PATCH RFC/RFT 05/15] gpio: sysfs: remove unneeded headers Bartosz Golaszewski
2025-06-11 8:17 ` Linus Walleij
2025-06-10 14:38 ` [PATCH RFC/RFT 06/15] gpio: sysfs: remove the mockdev pointer from struct gpio_device Bartosz Golaszewski
2025-06-11 8:19 ` Linus Walleij
2025-06-10 14:38 ` [PATCH RFC/RFT 07/15] gpio: sysfs: add a parallel class device for each GPIO chip using device IDs Bartosz Golaszewski
2025-06-11 8:27 ` Linus Walleij
2025-06-23 8:02 ` Bartosz Golaszewski
2025-06-10 14:38 ` [PATCH RFC/RFT 08/15] gpio: sysfs: only get the dirent reference for the value attr once Bartosz Golaszewski
2025-06-10 14:38 ` [PATCH RFC/RFT 09/15] gpio: sysfs: pass gpiod_data directly to internal GPIO sysfs functions Bartosz Golaszewski
2025-06-10 14:38 ` [PATCH RFC/RFT 10/15] gpio: sysfs: don't use driver data in sysfs callbacks for line attributes Bartosz Golaszewski
2025-06-10 14:38 ` [PATCH RFC/RFT 11/15] gpio: sysfs: rename the data variable in gpiod_(un)export() Bartosz Golaszewski
2025-06-10 14:38 ` [PATCH RFC/RFT 12/15] gpio: sysfs: don't look up exported lines as class devices Bartosz Golaszewski
2025-06-10 14:38 ` [PATCH RFC/RFT 13/15] gpio: sysfs: export the GPIO directory locally in the gpiochip<id> directory Bartosz Golaszewski
2025-06-10 14:38 ` [PATCH RFC/RFT 14/15] gpio: sysfs: allow disabling the legacy parts of the GPIO sysfs interface Bartosz Golaszewski
2025-06-10 14:38 ` [PATCH RFC/RFT 15/15] gpio: TODO: remove the task for the sysfs rework Bartosz Golaszewski
2025-06-13 8:02 ` [PATCH RFC/RFT 00/15] gpio: sysfs: add a per-chip export/unexport attribute pair Geert Uytterhoeven
2025-06-16 12:27 ` Bartosz Golaszewski
2025-06-18 13:38 ` Jan Lübbe
2025-06-18 14:53 ` Bartosz Golaszewski
2025-06-18 15:56 ` Bartosz Golaszewski
2025-06-23 8:27 ` Jan Lübbe
2025-06-18 14:54 ` Bartosz Golaszewski
2025-06-20 7:30 ` (subset) " Bartosz Golaszewski
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