mirror of
https://github.com/physwizz/a155-U-u1.git
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92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2021 MediaTek Inc.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/pm_runtime.h>
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static int pd_bring_up_probe(struct platform_device *pdev)
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{
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pm_runtime_enable(&pdev->dev);
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/* always enabled in lifetime */
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pm_runtime_get_sync(&pdev->dev);
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return 0;
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}
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static int pd_post_ao_probe(struct platform_device *pdev)
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{
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struct device_node *node = pdev->dev.of_node;
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u32 enabled;
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of_property_read_u32(node, "mediatek,post_ao", &enabled);
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pm_runtime_enable(&pdev->dev);
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if (enabled != 1) {
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pr_notice("btypass_pd_post_ao\n");
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return 0;
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}
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/* always enabled in lifetime */
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pm_runtime_get_sync(&pdev->dev);
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return 0;
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}
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static const struct of_device_id scpsys_bring_up_id_table[] = {
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{
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.compatible = "mediatek,scpsys-bringup",
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.data = pd_bring_up_probe,
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}, {
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.compatible = "mediatek,scpsys-bring-up",
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.data = pd_bring_up_probe,
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}, {
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.compatible = "mediatek,scpsys-post-ao",
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.data = pd_post_ao_probe,
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}, {
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/* sentinel */
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}
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};
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static int scpsys_bring_up_probe(struct platform_device *pdev)
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{
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int (*pd_probe)(struct platform_device *pd);
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int r;
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pd_probe = of_device_get_match_data(&pdev->dev);
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if (!pd_probe)
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return -EINVAL;
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r = pd_probe(pdev);
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if (r)
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dev_err(&pdev->dev,
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"could not register power-domain provider: %s: %d\n",
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pdev->name, r);
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return r;
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}
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static int scpsys_bring_up_remove(struct platform_device *pdev)
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{
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pm_runtime_put_sync(&pdev->dev);
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return 0;
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}
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static struct platform_driver scpsys_bring_up = {
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.probe = scpsys_bring_up_probe,
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.remove = scpsys_bring_up_remove,
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.driver = {
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.name = "scpsys_bring_up",
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.owner = THIS_MODULE,
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.of_match_table = scpsys_bring_up_id_table,
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},
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};
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module_platform_driver(scpsys_bring_up);
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MODULE_LICENSE("GPL");
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