Date: Wed, 27 Aug 2025 21:57:10 GMT From: Ahmad Khalifa <vexeduxr@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 4fd32b1e7f54 - main - gpio: add GPIO_GET_PIN_LIST Message-ID: <202508272157.57RLvABq026493@gitrepo.freebsd.org>
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The branch main has been updated by vexeduxr: URL: https://cgit.FreeBSD.org/src/commit/?id=4fd32b1e7f54811bd3a6f362493d256db40bb686 commit 4fd32b1e7f54811bd3a6f362493d256db40bb686 Author: Ahmad Khalifa <vexeduxr@FreeBSD.org> AuthorDate: 2025-08-27 21:25:39 +0000 Commit: Ahmad Khalifa <vexeduxr@FreeBSD.org> CommitDate: 2025-08-27 21:38:32 +0000 gpio: add GPIO_GET_PIN_LIST While most GPIO controllers provide pins from 0 .. N in a sequential manner, not all controllers start with pin 0, and not all controllers order their pins sequentially. Allow callers to get a pin list from the controller. The default behaviour is to fill pin_list with pins 0 to GPIO_PIN_MAX(). Suggested by: mmel Reviewed by: mmel Approved by: imp (mentor) Differential Revision: https://reviews.freebsd.org/D52172 --- sys/dev/gpio/gpio_if.m | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/sys/dev/gpio/gpio_if.m b/sys/dev/gpio/gpio_if.m index 5501b2b5c0e7..0b6988ceba79 100644 --- a/sys/dev/gpio/gpio_if.m +++ b/sys/dev/gpio/gpio_if.m @@ -62,6 +62,22 @@ CODE { return (0); } + + static int + gpio_default_get_pin_list(device_t dev, uint32_t *pin_list) + { + uint32_t maxpin; + int err; + + err = GPIO_PIN_MAX(dev, &maxpin); + if (err != 0) + return (ENXIO); + + for (int i = 0; i <= maxpin; i++) + pin_list[i] = i; + + return (0); + } }; HEADER { @@ -185,3 +201,13 @@ METHOD int pin_config_32 { uint32_t num_pins; uint32_t *pin_flags; } DEFAULT gpio_default_nosupport; + +# +# Get the controller's pin numbers. pin_list is expected to be an array with at +# least GPIO_PIN_MAX() elements. Populates pin_list from 0 to GPIO_PIN_MAX() by +# default. +# +METHOD int get_pin_list { + device_t dev; + uint32_t *pin_list; +} DEFAULT gpio_default_get_pin_list;
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