drivers/net/wireless/mediatek/mt76/mt7921/usb.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/mediatek/mt76/mt7921/usb.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/mediatek/mt76/mt7921/usb.c
Extension
.c
Size
8358 bytes
Lines
356
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (!(val & MT_WF_SW_SER_TRIGGER_SUSPEND)) {
			reinit = false;
			break;
		}
		if (val & MT_WF_SW_SER_DONE_SUSPEND) {
			mt76_wr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT, 0);
			break;
		}

		msleep(20);
	}

	if (reinit || mt792x_dma_need_reinit(dev)) {
		err = mt792xu_dma_init(dev, true);
		if (err)
			goto failed;
	}

	err = mt76u_resume_rx(&dev->mt76);
	if (err < 0)
		goto failed;

	err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, false, true);
failed:
	pm->suspended = false;

	if (err < 0)
		mt792x_reset(&dev->mt76);

	return err;
}
#endif /* CONFIG_PM */

MODULE_DEVICE_TABLE(usb, mt7921u_device_table);
MODULE_FIRMWARE(MT7921_FIRMWARE_WM);
MODULE_FIRMWARE(MT7921_ROM_PATCH);

static struct usb_driver mt7921u_driver = {
	.name		= KBUILD_MODNAME,
	.id_table	= mt7921u_device_table,
	.probe		= mt7921u_probe,
	.disconnect	= mt792xu_disconnect,
#ifdef CONFIG_PM
	.suspend	= mt7921u_suspend,
	.resume		= mt7921u_resume,
	.reset_resume	= mt7921u_resume,
#endif /* CONFIG_PM */
	.soft_unbind	= 1,
	.disable_hub_initiated_lpm = 1,
};
module_usb_driver(mt7921u_driver);

MODULE_DESCRIPTION("MediaTek MT7921U (USB) wireless driver");
MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
MODULE_LICENSE("Dual BSD/GPL");

Annotation

Implementation Notes