99 lines
1.9 KiB
C
99 lines
1.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/irq.h>
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#include <linux/interrupt.h>
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#include <linux/of_irq.h>
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#include "mtu3.h"
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#include "mtu3_priv.h"
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static int ipsleep_irqnum;
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static int ipsleep_init;
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static irqreturn_t ipsleep_eint_isr(int irqnum, void *data)
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{
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disable_irq_nosync(irqnum);
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pr_info("ipsleep_eint\n");
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return IRQ_HANDLED;
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}
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static int ipsleep_eint_irq_en(struct device *dev)
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{
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int ret = 0;
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ret = devm_request_irq(dev, ipsleep_irqnum,
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ipsleep_eint_isr, 0, "usbcd_eint", NULL);
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if (ret != 0) {
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dev_info(dev, "usbcd irq fail, ret %d, irqnum %d!!!\n",
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ret, ipsleep_irqnum);
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} else
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enable_irq_wake(ipsleep_irqnum);
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return ret;
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}
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static int mt_usb_ipsleep_probe(struct platform_device *pdev)
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{
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int ret = 0;
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struct device *dev = &pdev->dev;
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struct device_node *node = dev->of_node;
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ipsleep_irqnum = irq_of_parse_and_map(node, 0);
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if (ipsleep_irqnum < 0) {
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dev_info(dev, "get eint fail\n");
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return -ENODEV;
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}
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ret = ipsleep_eint_irq_en(dev);
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if (ret != 0)
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goto irqfail;
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ipsleep_init = 1;
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irqfail:
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return ret;
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}
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static int mt_usb_ipsleep_remove(struct platform_device *pdev)
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{
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free_irq(ipsleep_irqnum, NULL);
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return 0;
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}
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static const struct of_device_id usb_ipsleep_of_match[] = {
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{.compatible = "mediatek,usb_ipsleep"},
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{},
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};
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static struct platform_driver usb_ipsleep_driver = {
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.remove = mt_usb_ipsleep_remove,
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.probe = mt_usb_ipsleep_probe,
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.driver = {
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.name = "usb_ipsleep",
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.owner = THIS_MODULE,
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.of_match_table = usb_ipsleep_of_match,
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},
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};
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void usb_wakeup_enable(struct ssusb_mtk *ssusb)
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{
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if (ipsleep_init)
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enable_irq(ipsleep_irqnum);
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}
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void usb_wakeup_disable(struct ssusb_mtk *ssusb)
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{
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if (ipsleep_init)
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disable_irq(ipsleep_irqnum);
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}
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module_platform_driver(usb_ipsleep_driver);
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