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53 lines
1.8 KiB
Diff
53 lines
1.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Samuel Holland <samuel@sholland.org>
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Date: Sat, 2 Jan 2021 15:52:27 -0600
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Subject: [PATCH] Input: axp20x-pek - allow wakeup after shutdown
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While the AXP20x PMIC handles the power button itself after shutting
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down, it is not always possible to use the PMIC's built-in shutdown
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feature, such as when other wakeup sources are needed (for example, an
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IR remote or wake-on-LAN) that require firmware support. In that case,
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the PMIC remains on, but suspended, until the board is powered back on.
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During this "fake" off state, IRQ configuration is similar to system
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sleep, where enable_irq_wake() must be call on an IRQ for it to be
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wakeup capable. Run the suspend callback to arm the power button IRQs
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during the shutdown process, so the power button works in this state.
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Signed-off-by: Samuel Holland <samuel@sholland.org>
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---
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drivers/input/misc/axp20x-pek.c | 8 +++++++-
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1 file changed, 7 insertions(+), 1 deletion(-)
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--- a/drivers/input/misc/axp20x-pek.c
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+++ b/drivers/input/misc/axp20x-pek.c
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@@ -354,7 +354,7 @@ static int axp20x_pek_probe(struct platf
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return 0;
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}
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-static int __maybe_unused axp20x_pek_suspend(struct device *dev)
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+static int axp20x_pek_suspend(struct device *dev)
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{
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struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
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@@ -413,6 +413,11 @@ static const struct dev_pm_ops axp20x_pe
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#endif
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};
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+static void axp20x_pek_shutdown(struct platform_device *pdev)
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+{
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+ axp20x_pek_suspend(&pdev->dev);
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+}
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+
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static const struct platform_device_id axp_pek_id_match[] = {
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{
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.name = "axp20x-pek",
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@@ -428,6 +433,7 @@ MODULE_DEVICE_TABLE(platform, axp_pek_id
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static struct platform_driver axp20x_pek_driver = {
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.probe = axp20x_pek_probe,
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+ .shutdown = axp20x_pek_shutdown,
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.id_table = axp_pek_id_match,
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.driver = {
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.name = "axp20x-pek",
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