1 // SPDX-License-Identifier: ISC
2 /* Copyright (C) 2021 MediaTek Inc. */
4 #include <linux/kernel.h>
5 #include <linux/mmc/sdio_func.h>
6 #include <linux/module.h>
7 #include <linux/iopoll.h>
16 mt7921s_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
19 struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
20 enum mt7921_sdio_pkt_type type = MT7921_SDIO_CMD;
21 enum mt76_mcuq_id txq = MT_MCUQ_WM;
24 /* We just return in case firmware assertion to avoid blocking the
25 * common workqueue to run, for example, the coredump work might be
26 * blocked by mt7921_mac_work that is excuting register access via sdio
32 ret = mt7921_mcu_fill_message(mdev, skb, cmd, seq);
36 if (cmd == MCU_CMD(FW_SCATTER))
37 type = MT7921_SDIO_FWDL;
39 mt7921_skb_add_usb_sdio_hdr(dev, skb, type);
40 pad = round_up(skb->len, 4) - skb->len;
41 __skb_put_zero(skb, pad);
43 ret = mt76_tx_queue_skb_raw(dev, mdev->q_mcu[txq], skb, 0);
47 mt76_queue_kick(dev, mdev->q_mcu[txq]);
52 static u32 mt7921s_read_rm3r(struct mt7921_dev *dev)
54 struct mt76_sdio *sdio = &dev->mt76.sdio;
56 return sdio_readl(sdio->func, MCR_D2HRM3R, NULL);
59 static u32 mt7921s_clear_rm3r_drv_own(struct mt7921_dev *dev)
61 struct mt76_sdio *sdio = &dev->mt76.sdio;
64 val = sdio_readl(sdio->func, MCR_D2HRM3R, NULL);
66 sdio_writel(sdio->func, H2D_SW_INT_CLEAR_MAILBOX_ACK,
72 int mt7921s_mcu_init(struct mt7921_dev *dev)
74 static const struct mt76_mcu_ops mt7921s_mcu_ops = {
75 .headroom = MT_SDIO_HDR_SIZE + sizeof(struct mt7921_mcu_txd),
76 .tailroom = MT_SDIO_TAIL_SIZE,
77 .mcu_skb_send_msg = mt7921s_mcu_send_message,
78 .mcu_parse_response = mt7921_mcu_parse_response,
79 .mcu_rr = mt76_connac_mcu_reg_rr,
80 .mcu_wr = mt76_connac_mcu_reg_wr,
84 mt7921s_mcu_drv_pmctrl(dev);
86 dev->mt76.mcu_ops = &mt7921s_mcu_ops;
88 ret = mt7921_run_firmware(dev);
92 set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
97 int mt7921s_mcu_drv_pmctrl(struct mt7921_dev *dev)
99 struct sdio_func *func = dev->mt76.sdio.func;
100 struct mt76_phy *mphy = &dev->mt76.phy;
101 struct mt76_connac_pm *pm = &dev->pm;
105 sdio_claim_host(func);
107 sdio_writel(func, WHLPCR_FW_OWN_REQ_CLR, MCR_WHLPCR, NULL);
109 err = readx_poll_timeout(mt76s_read_pcr, &dev->mt76, status,
110 status & WHLPCR_IS_DRIVER_OWN, 2000, 1000000);
112 if (!err && test_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state))
113 err = readx_poll_timeout(mt7921s_read_rm3r, dev, status,
114 status & D2HRM3R_IS_DRIVER_OWN,
117 sdio_release_host(func);
120 dev_err(dev->mt76.dev, "driver own failed\n");
125 clear_bit(MT76_STATE_PM, &mphy->state);
127 pm->stats.last_wake_event = jiffies;
128 pm->stats.doze_time += pm->stats.last_wake_event -
129 pm->stats.last_doze_event;
134 int mt7921s_mcu_fw_pmctrl(struct mt7921_dev *dev)
136 struct sdio_func *func = dev->mt76.sdio.func;
137 struct mt76_phy *mphy = &dev->mt76.phy;
138 struct mt76_connac_pm *pm = &dev->pm;
142 sdio_claim_host(func);
144 if (test_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state)) {
145 err = readx_poll_timeout(mt7921s_clear_rm3r_drv_own,
147 !(status & D2HRM3R_IS_DRIVER_OWN),
150 dev_err(dev->mt76.dev, "mailbox ACK not cleared\n");
155 sdio_writel(func, WHLPCR_FW_OWN_REQ_SET, MCR_WHLPCR, NULL);
157 err = readx_poll_timeout(mt76s_read_pcr, &dev->mt76, status,
158 !(status & WHLPCR_IS_DRIVER_OWN), 2000, 1000000);
160 sdio_release_host(func);
163 dev_err(dev->mt76.dev, "firmware own failed\n");
164 clear_bit(MT76_STATE_PM, &mphy->state);
168 pm->stats.last_doze_event = jiffies;
169 pm->stats.awake_time += pm->stats.last_doze_event -
170 pm->stats.last_wake_event;