8f9e91ad03
These patches were generated from: https://github.com/raspberrypi/linux/commits/rpi-6.12.y With the following command: git format-patch -N v6.12.27..HEAD (HEAD -> 8d3206ee456a5ecdf9ddbfd8e5e231e4f0cd716e) Exceptions: - (def)configs patches - github workflows patches - applied & reverted patches - readme patches - wireless patches Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
58 lines
1.9 KiB
Diff
58 lines
1.9 KiB
Diff
From fcfa5a981cc4b0e89210484abc7a2027873f937f Mon Sep 17 00:00:00 2001
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From: Nick Bulleid <nedbulleid@fastmail.com>
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Date: Thu, 10 May 2018 21:57:02 +0100
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Subject: [PATCH] Add ability to export gpio used by gpio-poweroff
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Signed-off-by: Nick Bulleid <nedbulleid@fastmail.com>
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Added export feature to gpio-poweroff documentation
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Signed-off-by: Nick Bulleid <nedbulleid@fastmail.com>
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---
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.../bindings/power/reset/gpio-poweroff.yaml | 4 ++++
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drivers/power/reset/gpio-poweroff.c | 11 ++++++++++-
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2 files changed, 14 insertions(+), 1 deletion(-)
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--- a/Documentation/devicetree/bindings/power/reset/gpio-poweroff.yaml
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+++ b/Documentation/devicetree/bindings/power/reset/gpio-poweroff.yaml
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@@ -50,6 +50,10 @@ properties:
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default: 3000
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description: Time to wait before assuming the power off sequence failed.
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+ export:
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+ type: boolean
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+ description: Export the GPIO line to the sysfs system
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+
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required:
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- compatible
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- gpios
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--- a/drivers/power/reset/gpio-poweroff.c
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+++ b/drivers/power/reset/gpio-poweroff.c
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@@ -55,6 +55,7 @@ static int gpio_poweroff_probe(struct pl
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bool input = false;
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enum gpiod_flags flags;
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int priority = SYS_OFF_PRIO_DEFAULT;
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+ bool export = false;
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int ret;
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gpio_poweroff = devm_kzalloc(&pdev->dev, sizeof(*gpio_poweroff), GFP_KERNEL);
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@@ -86,10 +87,18 @@ static int gpio_poweroff_probe(struct pl
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if (IS_ERR(gpio_poweroff->reset_gpio))
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return PTR_ERR(gpio_poweroff->reset_gpio);
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+ export = device_property_read_bool(&pdev->dev, "export");
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+ if (export) {
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+ gpiod_export(gpio_poweroff->reset_gpio, true);
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+ gpiod_export_link(&pdev->dev, "poweroff-gpio", gpio_poweroff->reset_gpio);
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+ }
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+
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ret = devm_register_sys_off_handler(&pdev->dev, SYS_OFF_MODE_POWER_OFF,
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priority, gpio_poweroff_do_poweroff, gpio_poweroff);
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- if (ret)
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+ if (ret) {
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+ gpiod_unexport(gpio_poweroff->reset_gpio);
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return dev_err_probe(&pdev->dev, ret, "Cannot register poweroff handler\n");
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+ }
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return 0;
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}
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