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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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995832b2ce
Replace the #include of <linux/mod_devicetable.h> by the more specific <linux/device-id/*.h> where applicable. For most cases the include can be dropped completely, only a few drivers need one or two headers added. Acked-by: Danilo Krummrich <dakr@kernel.org> Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2025 by Aurelien Jarno
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*/
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#include <linux/bits.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/reboot.h>
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/* Power Control Register 2 */
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#define PWR_CTRL2 0x7e
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#define PWR_CTRL2_SHUTDOWN BIT(2) /* Shutdown request */
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#define PWR_CTRL2_RST BIT(1) /* Reset request */
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static int spacemit_p1_pwroff_handler(struct sys_off_data *data)
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{
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struct regmap *regmap = data->cb_data;
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int ret;
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/* Put the PMIC into shutdown state */
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ret = regmap_set_bits(regmap, PWR_CTRL2, PWR_CTRL2_SHUTDOWN);
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if (ret) {
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dev_err(data->dev, "shutdown failed: %d\n", ret);
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return notifier_from_errno(ret);
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}
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return NOTIFY_DONE;
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}
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static int spacemit_p1_restart_handler(struct sys_off_data *data)
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{
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struct regmap *regmap = data->cb_data;
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int ret;
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/* Put the PMIC into reset state */
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ret = regmap_set_bits(regmap, PWR_CTRL2, PWR_CTRL2_RST);
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if (ret) {
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dev_err(data->dev, "restart failed: %d\n", ret);
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return notifier_from_errno(ret);
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}
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return NOTIFY_DONE;
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}
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static int spacemit_p1_reboot_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct regmap *regmap;
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int ret;
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regmap = dev_get_regmap(dev->parent, NULL);
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if (!regmap)
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return -ENODEV;
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ret = devm_register_power_off_handler(dev, &spacemit_p1_pwroff_handler,
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regmap);
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if (ret)
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return dev_err_probe(dev, ret,
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"Failed to register power off handler\n");
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ret = devm_register_restart_handler(dev, spacemit_p1_restart_handler,
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regmap);
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if (ret)
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return dev_err_probe(dev, ret,
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"Failed to register restart handler\n");
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return 0;
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}
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static const struct platform_device_id spacemit_p1_reboot_id_table[] = {
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{ .name = "spacemit-p1-reboot" },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(platform, spacemit_p1_reboot_id_table);
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static struct platform_driver spacemit_p1_reboot_driver = {
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.driver = {
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.name = "spacemit-p1-reboot",
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},
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.probe = spacemit_p1_reboot_probe,
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.id_table = spacemit_p1_reboot_id_table,
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};
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module_platform_driver(spacemit_p1_reboot_driver);
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MODULE_DESCRIPTION("SpacemiT P1 reboot/poweroff driver");
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MODULE_LICENSE("GPL");
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