1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2019 MediaTek Inc. 3 * 4 * Author: Felix Fietkau <nbd@nbd.name> 5 * Lorenzo Bianconi <lorenzo@kernel.org> 6 * Sean Wang <sean.wang@mediatek.com> 7 */ 8 9 #include <linux/kernel.h> 10 #include <linux/module.h> 11 #include <linux/usb.h> 12 13 #include "mt7615.h" 14 #include "mac.h" 15 #include "mcu.h" 16 #include "regs.h" 17 18 static const struct usb_device_id mt7615_device_table[] = { 19 { USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7663, 0xff, 0xff, 0xff) }, 20 { }, 21 }; 22 23 static void mt7663u_stop(struct ieee80211_hw *hw) 24 { 25 struct mt7615_phy *phy = mt7615_hw_phy(hw); 26 struct mt7615_dev *dev = hw->priv; 27 28 clear_bit(MT76_STATE_RUNNING, &dev->mphy.state); 29 del_timer_sync(&phy->roc_timer); 30 cancel_work_sync(&phy->roc_work); 31 cancel_delayed_work_sync(&phy->scan_work); 32 cancel_delayed_work_sync(&phy->mt76->mac_work); 33 mt76u_stop_tx(&dev->mt76); 34 } 35 36 static void mt7663u_cleanup(struct mt7615_dev *dev) 37 { 38 clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); 39 mt76u_queues_deinit(&dev->mt76); 40 } 41 42 static void mt7663u_init_work(struct work_struct *work) 43 { 44 struct mt7615_dev *dev; 45 46 dev = container_of(work, struct mt7615_dev, mcu_work); 47 if (mt7663u_mcu_init(dev)) 48 return; 49 50 mt7615_init_work(dev); 51 } 52 53 static int mt7663u_probe(struct usb_interface *usb_intf, 54 const struct usb_device_id *id) 55 { 56 static const struct mt76_driver_ops drv_ops = { 57 .txwi_size = MT_USB_TXD_SIZE, 58 .drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ, 59 .tx_prepare_skb = mt7663_usb_sdio_tx_prepare_skb, 60 .tx_complete_skb = mt7663_usb_sdio_tx_complete_skb, 61 .tx_status_data = mt7663_usb_sdio_tx_status_data, 62 .rx_skb = mt7615_queue_rx_skb, 63 .sta_ps = mt7615_sta_ps, 64 .sta_add = mt7615_mac_sta_add, 65 .sta_remove = mt7615_mac_sta_remove, 66 .update_survey = mt7615_update_channel, 67 }; 68 struct usb_device *udev = interface_to_usbdev(usb_intf); 69 struct ieee80211_ops *ops; 70 struct mt7615_dev *dev; 71 struct mt76_dev *mdev; 72 int ret; 73 74 ops = devm_kmemdup(&usb_intf->dev, &mt7615_ops, sizeof(mt7615_ops), 75 GFP_KERNEL); 76 if (!ops) 77 return -ENOMEM; 78 79 ops->stop = mt7663u_stop; 80 81 mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops); 82 if (!mdev) 83 return -ENOMEM; 84 85 dev = container_of(mdev, struct mt7615_dev, mt76); 86 udev = usb_get_dev(udev); 87 usb_reset_device(udev); 88 89 usb_set_intfdata(usb_intf, dev); 90 91 INIT_WORK(&dev->mcu_work, mt7663u_init_work); 92 dev->reg_map = mt7663_usb_sdio_reg_map; 93 dev->ops = ops; 94 ret = mt76u_init(mdev, usb_intf, true); 95 if (ret < 0) 96 goto error; 97 98 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 99 (mt76_rr(dev, MT_HW_REV) & 0xff); 100 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 101 102 if (mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON, 103 FW_STATE_PWR_ON << 1, 500)) { 104 dev_dbg(dev->mt76.dev, "Usb device already powered on\n"); 105 set_bit(MT76_STATE_POWER_OFF, &dev->mphy.state); 106 goto alloc_queues; 107 } 108 109 ret = mt76u_vendor_request(&dev->mt76, MT_VEND_POWER_ON, 110 USB_DIR_OUT | USB_TYPE_VENDOR, 111 0x0, 0x1, NULL, 0); 112 if (ret) 113 goto error; 114 115 if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON, 116 FW_STATE_PWR_ON << 1, 500)) { 117 dev_err(dev->mt76.dev, "Timeout for power on\n"); 118 ret = -EIO; 119 goto error; 120 } 121 122 alloc_queues: 123 ret = mt76u_alloc_mcu_queue(&dev->mt76); 124 if (ret) 125 goto error; 126 127 ret = mt76u_alloc_queues(&dev->mt76); 128 if (ret) 129 goto error; 130 131 ret = mt7663_usb_sdio_register_device(dev); 132 if (ret) 133 goto error; 134 135 return 0; 136 137 error: 138 mt76u_queues_deinit(&dev->mt76); 139 usb_set_intfdata(usb_intf, NULL); 140 usb_put_dev(interface_to_usbdev(usb_intf)); 141 142 mt76_free_device(&dev->mt76); 143 144 return ret; 145 } 146 147 static void mt7663u_disconnect(struct usb_interface *usb_intf) 148 { 149 struct mt7615_dev *dev = usb_get_intfdata(usb_intf); 150 151 if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state)) 152 return; 153 154 ieee80211_unregister_hw(dev->mt76.hw); 155 mt7663u_cleanup(dev); 156 157 usb_set_intfdata(usb_intf, NULL); 158 usb_put_dev(interface_to_usbdev(usb_intf)); 159 160 mt76_free_device(&dev->mt76); 161 } 162 163 #ifdef CONFIG_PM 164 static int mt7663u_suspend(struct usb_interface *intf, pm_message_t state) 165 { 166 struct mt7615_dev *dev = usb_get_intfdata(intf); 167 168 if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) && 169 mt7615_firmware_offload(dev)) { 170 int err; 171 172 err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, true); 173 if (err < 0) 174 return err; 175 } 176 177 mt76u_stop_rx(&dev->mt76); 178 mt76u_stop_tx(&dev->mt76); 179 180 return 0; 181 } 182 183 static int mt7663u_resume(struct usb_interface *intf) 184 { 185 struct mt7615_dev *dev = usb_get_intfdata(intf); 186 int err; 187 188 err = mt76u_vendor_request(&dev->mt76, MT_VEND_FEATURE_SET, 189 USB_DIR_OUT | USB_TYPE_VENDOR, 190 0x5, 0x0, NULL, 0); 191 if (err) 192 return err; 193 194 err = mt76u_resume_rx(&dev->mt76); 195 if (err < 0) 196 return err; 197 198 if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) && 199 mt7615_firmware_offload(dev)) 200 err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, false); 201 202 return err; 203 } 204 #endif /* CONFIG_PM */ 205 206 MODULE_DEVICE_TABLE(usb, mt7615_device_table); 207 MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9); 208 MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH); 209 MODULE_FIRMWARE(MT7663_FIRMWARE_N9); 210 MODULE_FIRMWARE(MT7663_ROM_PATCH); 211 212 static struct usb_driver mt7663u_driver = { 213 .name = KBUILD_MODNAME, 214 .id_table = mt7615_device_table, 215 .probe = mt7663u_probe, 216 .disconnect = mt7663u_disconnect, 217 #ifdef CONFIG_PM 218 .suspend = mt7663u_suspend, 219 .resume = mt7663u_resume, 220 .reset_resume = mt7663u_resume, 221 #endif /* CONFIG_PM */ 222 .soft_unbind = 1, 223 .disable_hub_initiated_lpm = 1, 224 }; 225 module_usb_driver(mt7663u_driver); 226 227 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); 228 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>"); 229 MODULE_LICENSE("Dual BSD/GPL"); 230