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83 lines
2.5 KiB
Diff
83 lines
2.5 KiB
Diff
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From 1b1305e95e85624f538ec56db9acf88e2d3d7397 Mon Sep 17 00:00:00 2001
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From: Samuel Holland <samuel@sholland.org>
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Date: Wed, 28 Dec 2022 10:27:52 -0600
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Subject: [PATCH] mfd: axp20x: Switch to the sys-off handler API
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This removes a layer of indirection through pm_power_off() and allows
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the PMIC handler to be used as a fallback when firmware power off fails.
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This happens on boards like the Clockwork DevTerm R-01 where OpenSBI
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does not know how to use the PMIC to power off the board.
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Move the check for AXP288 to avoid registering a dummy handler.
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Signed-off-by: Samuel Holland <samuel@sholland.org>
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[Lee: Removed superfluous new line]
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Signed-off-by: Lee Jones <lee@kernel.org>
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Link: https://lore.kernel.org/r/20221228162752.14204-1-samuel@sholland.org
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---
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drivers/mfd/axp20x.c | 27 +++++++++++----------------
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1 file changed, 11 insertions(+), 16 deletions(-)
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--- a/drivers/mfd/axp20x.c
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+++ b/drivers/mfd/axp20x.c
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@@ -23,7 +23,7 @@
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#include <linux/mfd/core.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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-#include <linux/pm_runtime.h>
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+#include <linux/reboot.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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@@ -832,17 +832,16 @@ static const struct mfd_cell axp813_cell
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},
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};
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-static struct axp20x_dev *axp20x_pm_power_off;
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-static void axp20x_power_off(void)
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+static int axp20x_power_off(struct sys_off_data *data)
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{
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- if (axp20x_pm_power_off->variant == AXP288_ID)
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- return;
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+ struct axp20x_dev *axp20x = data->cb_data;
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- regmap_write(axp20x_pm_power_off->regmap, AXP20X_OFF_CTRL,
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- AXP20X_OFF);
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+ regmap_write(axp20x->regmap, AXP20X_OFF_CTRL, AXP20X_OFF);
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/* Give capacitors etc. time to drain to avoid kernel panic msg. */
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mdelay(500);
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+
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+ return NOTIFY_DONE;
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}
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int axp20x_match_device(struct axp20x_dev *axp20x)
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@@ -1009,10 +1008,11 @@ int axp20x_device_probe(struct axp20x_de
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return ret;
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}
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- if (!pm_power_off) {
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- axp20x_pm_power_off = axp20x;
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- pm_power_off = axp20x_power_off;
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- }
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+ if (axp20x->variant != AXP288_ID)
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+ devm_register_sys_off_handler(axp20x->dev,
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+ SYS_OFF_MODE_POWER_OFF,
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+ SYS_OFF_PRIO_DEFAULT,
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+ axp20x_power_off, axp20x);
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dev_info(axp20x->dev, "AXP20X driver loaded\n");
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@@ -1022,11 +1022,6 @@ EXPORT_SYMBOL(axp20x_device_probe);
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void axp20x_device_remove(struct axp20x_dev *axp20x)
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{
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- if (axp20x == axp20x_pm_power_off) {
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- axp20x_pm_power_off = NULL;
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- pm_power_off = NULL;
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- }
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-
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mfd_remove_devices(axp20x->dev);
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regmap_del_irq_chip(axp20x->irq, axp20x->regmap_irqc);
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}
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