1 // SPDX-License-Identifier: GPL-2.0 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 #include <linux/kernel.h> 9 #include <linux/module.h> 10 11 #include "mt7615.h" 12 #include "mac.h" 13 #include "mcu.h" 14 #include "regs.h" 15 16 static int 17 mt7663u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb, 18 int cmd, bool wait_resp) 19 { 20 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); 21 int ret, seq, ep; 22 23 mutex_lock(&mdev->mcu.mutex); 24 25 mt7615_mcu_fill_msg(dev, skb, cmd, &seq); 26 if (cmd != MCU_CMD_FW_SCATTER) 27 ep = MT_EP_OUT_INBAND_CMD; 28 else 29 ep = MT_EP_OUT_AC_BE; 30 31 put_unaligned_le32(skb->len, skb_push(skb, sizeof(skb->len))); 32 ret = mt76_skb_adjust_pad(skb); 33 if (ret < 0) 34 goto out; 35 36 ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL, 37 1000, ep); 38 if (ret < 0) 39 goto out; 40 41 if (wait_resp) 42 ret = mt7615_mcu_wait_response(dev, cmd, seq); 43 44 out: 45 mutex_unlock(&mdev->mcu.mutex); 46 dev_kfree_skb(skb); 47 48 return ret; 49 } 50 51 int mt7663u_mcu_init(struct mt7615_dev *dev) 52 { 53 static const struct mt76_mcu_ops mt7663u_mcu_ops = { 54 .headroom = MT_USB_HDR_SIZE + sizeof(struct mt7615_mcu_txd), 55 .tailroom = MT_USB_TAIL_SIZE, 56 .mcu_skb_send_msg = mt7663u_mcu_send_message, 57 .mcu_send_msg = mt7615_mcu_msg_send, 58 .mcu_restart = mt7615_mcu_restart, 59 }; 60 int ret; 61 62 dev->mt76.mcu_ops = &mt7663u_mcu_ops, 63 64 /* usb does not support runtime-pm */ 65 clear_bit(MT76_STATE_PM, &dev->mphy.state); 66 mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 67 68 if (test_and_clear_bit(MT76_STATE_POWER_OFF, &dev->mphy.state)) { 69 mt7615_mcu_restart(&dev->mt76); 70 if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, 71 MT_TOP_MISC2_FW_PWR_ON, 0, 500)) 72 return -EIO; 73 74 ret = mt76u_vendor_request(&dev->mt76, MT_VEND_POWER_ON, 75 USB_DIR_OUT | USB_TYPE_VENDOR, 76 0x0, 0x1, NULL, 0); 77 if (ret) 78 return ret; 79 80 if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, 81 MT_TOP_MISC2_FW_PWR_ON, 82 FW_STATE_PWR_ON << 1, 500)) { 83 dev_err(dev->mt76.dev, "Timeout for power on\n"); 84 return -EIO; 85 } 86 } 87 88 ret = __mt7663_load_firmware(dev); 89 if (ret) 90 return ret; 91 92 mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 93 set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state); 94 95 return 0; 96 } 97