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mt76: mt7663u: introduce suspend/resume to mt7663u

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Tested on Chromebok by "echo mem to /sys/power/state" to suspend and
then waked up by keyboard keystrokes to resume system.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Sean Wang 2020-05-01 12:36:14 +02:00 committed by Felix Fietkau
parent c6bf20109a
commit d0846f0867
2 changed files with 39 additions and 6 deletions
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1
drivers/net/wireless/mediatek/mt76/mt76.h
View File

@ -381,6 +381,7 @@ enum mt_vendor_req {
MT_VEND_READ_CFG = 0x47,
MT_VEND_READ_EXT = 0x63,
MT_VEND_WRITE_EXT = 0x66,
MT_VEND_FEATURE_SET = 0x91,
};
enum mt76u_in_ep {

44
drivers/net/wireless/mediatek/mt76/mt7615/usb.c
View File

@ -372,18 +372,50 @@ static void mt7663u_disconnect(struct usb_interface *usb_intf)
ieee80211_free_hw(dev->mt76.hw);
}
static int __maybe_unused
mt7663u_suspend(struct usb_interface *intf,
pm_message_t state)
#ifdef CONFIG_PM
static int mt7663u_suspend(struct usb_interface *intf, pm_message_t state)
{
struct mt7615_dev *dev = usb_get_intfdata(intf);
if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
mt7615_firmware_offload(dev)) {
int err;
err = mt7615_mcu_set_hif_suspend(dev, true);
if (err < 0)
return err;
}
mt76u_stop_rx(&dev->mt76);
mt76u_stop_tx(&dev->mt76);
tasklet_kill(&dev->mt76.tx_tasklet);
return 0;
}
static int __maybe_unused
mt7663u_resume(struct usb_interface *intf)
static int mt7663u_resume(struct usb_interface *intf)
{
return 0;
struct mt7615_dev *dev = usb_get_intfdata(intf);
int err;
err = mt76u_vendor_request(&dev->mt76, MT_VEND_FEATURE_SET,
USB_DIR_OUT | USB_TYPE_VENDOR,
0x5, 0x0, NULL, 0);
if (err)
return err;
err = mt76u_resume_rx(&dev->mt76);
if (err < 0)
return err;
if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
mt7615_firmware_offload(dev))
err = mt7615_mcu_set_hif_suspend(dev, false);
return err;
}
#endif /* CONFIG_PM */
MODULE_DEVICE_TABLE(usb, mt7615_device_table);
MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);