1// SPDX-License-Identifier: ISC
2/* Copyright (C) 2020 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/iopoll.h>
11#include <linux/module.h>
12
13#include <linux/mmc/host.h>
14#include <linux/mmc/sdio_ids.h>
15#include <linux/mmc/sdio_func.h>
16
17#include "../sdio.h"
18#include "mt7615.h"
19#include "mac.h"
20#include "mcu.h"
21
22static const struct sdio_device_id mt7663s_table[] = {
23	{ SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, 0x7603) },
24	{ }	/* Terminating entry */
25};
26
27static void mt7663s_txrx_worker(struct mt76_worker *w)
28{
29	struct mt76_sdio *sdio = container_of(w, struct mt76_sdio,
30					      txrx_worker);
31	struct mt76_dev *mdev = container_of(sdio, struct mt76_dev, sdio);
32	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
33
34	if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
35		queue_work(mdev->wq, &dev->pm.wake_work);
36		return;
37	}
38	mt76s_txrx_worker(sdio);
39	mt76_connac_pm_unref(&dev->mphy, &dev->pm);
40}
41
42static void mt7663s_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 (mt7663s_mcu_init(dev))
48		return;
49
50	mt7615_init_work(dev);
51}
52
53static int mt7663s_parse_intr(struct mt76_dev *dev, struct mt76s_intr *intr)
54{
55	struct mt76_sdio *sdio = &dev->sdio;
56	struct mt7663s_intr *irq_data = sdio->intr_data;
57	int i, err;
58
59	sdio_claim_host(sdio->func);
60	err = sdio_readsb(sdio->func, irq_data, MCR_WHISR, sizeof(*irq_data));
61	sdio_release_host(sdio->func);
62
63	if (err)
64		return err;
65
66	intr->isr = irq_data->isr;
67	intr->rec_mb = irq_data->rec_mb;
68	intr->tx.wtqcr = irq_data->tx.wtqcr;
69	intr->rx.num = irq_data->rx.num;
70	for (i = 0; i < 2 ; i++)
71		intr->rx.len[i] = irq_data->rx.len[i];
72
73	return 0;
74}
75
76static int mt7663s_probe(struct sdio_func *func,
77			 const struct sdio_device_id *id)
78{
79	static const struct mt76_driver_ops drv_ops = {
80		.txwi_size = MT_USB_TXD_SIZE,
81		.drv_flags = MT_DRV_RX_DMA_HDR,
82		.tx_prepare_skb = mt7663_usb_sdio_tx_prepare_skb,
83		.tx_complete_skb = mt7663_usb_sdio_tx_complete_skb,
84		.tx_status_data = mt7663_usb_sdio_tx_status_data,
85		.rx_skb = mt7615_queue_rx_skb,
86		.rx_check = mt7615_rx_check,
87		.sta_add = mt7615_mac_sta_add,
88		.sta_remove = mt7615_mac_sta_remove,
89		.update_survey = mt7615_update_channel,
90	};
91	static const struct mt76_bus_ops mt7663s_ops = {
92		.rr = mt76s_rr,
93		.rmw = mt76s_rmw,
94		.wr = mt76s_wr,
95		.write_copy = mt76s_write_copy,
96		.read_copy = mt76s_read_copy,
97		.wr_rp = mt76s_wr_rp,
98		.rd_rp = mt76s_rd_rp,
99		.type = MT76_BUS_SDIO,
100	};
101	struct ieee80211_ops *ops;
102	struct mt7615_dev *dev;
103	struct mt76_dev *mdev;
104	int ret;
105
106	ops = devm_kmemdup(&func->dev, &mt7615_ops, sizeof(mt7615_ops),
107			   GFP_KERNEL);
108	if (!ops)
109		return -ENOMEM;
110
111	mdev = mt76_alloc_device(&func->dev, sizeof(*dev), ops, &drv_ops);
112	if (!mdev)
113		return -ENOMEM;
114
115	dev = container_of(mdev, struct mt7615_dev, mt76);
116
117	INIT_WORK(&dev->mcu_work, mt7663s_init_work);
118	dev->reg_map = mt7663_usb_sdio_reg_map;
119	dev->ops = ops;
120	sdio_set_drvdata(func, dev);
121
122	ret = mt76s_init(mdev, func, &mt7663s_ops);
123	if (ret < 0)
124		goto error;
125
126	ret = mt76s_hw_init(mdev, func, MT76_CONNAC_SDIO);
127	if (ret)
128		goto error;
129
130	mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
131		    (mt76_rr(dev, MT_HW_REV) & 0xff);
132	dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
133
134	mdev->sdio.parse_irq = mt7663s_parse_intr;
135	mdev->sdio.intr_data = devm_kmalloc(mdev->dev,
136					    sizeof(struct mt7663s_intr),
137					    GFP_KERNEL);
138	if (!mdev->sdio.intr_data) {
139		ret = -ENOMEM;
140		goto error;
141	}
142
143	ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN);
144	if (ret)
145		goto error;
146
147	ret = mt76s_alloc_tx(mdev);
148	if (ret)
149		goto error;
150
151	ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker,
152				mt7663s_txrx_worker, "sdio-txrx");
153	if (ret)
154		goto error;
155
156	sched_set_fifo_low(mdev->sdio.txrx_worker.task);
157
158	ret = mt7663_usb_sdio_register_device(dev);
159	if (ret)
160		goto error;
161
162	return 0;
163
164error:
165	mt76s_deinit(&dev->mt76);
166	mt76_free_device(&dev->mt76);
167
168	return ret;
169}
170
171static void mt7663s_remove(struct sdio_func *func)
172{
173	struct mt7615_dev *dev = sdio_get_drvdata(func);
174
175	if (!test_and_clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
176		return;
177
178	ieee80211_unregister_hw(dev->mt76.hw);
179	mt76s_deinit(&dev->mt76);
180	mt76_free_device(&dev->mt76);
181}
182
183static int mt7663s_suspend(struct device *dev)
184{
185	struct sdio_func *func = dev_to_sdio_func(dev);
186	struct mt7615_dev *mdev = sdio_get_drvdata(func);
187	int err;
188
189	if (!test_bit(MT76_STATE_SUSPEND, &mdev->mphy.state) &&
190	    mt7615_firmware_offload(mdev)) {
191		int err;
192
193		err = mt76_connac_mcu_set_hif_suspend(&mdev->mt76, true);
194		if (err < 0)
195			return err;
196	}
197
198	sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
199
200	err = mt7615_mcu_set_fw_ctrl(mdev);
201	if (err)
202		return err;
203
204	mt76_worker_disable(&mdev->mt76.sdio.txrx_worker);
205	mt76_worker_disable(&mdev->mt76.sdio.status_worker);
206	mt76_worker_disable(&mdev->mt76.sdio.net_worker);
207
208	cancel_work_sync(&mdev->mt76.sdio.stat_work);
209	clear_bit(MT76_READING_STATS, &mdev->mphy.state);
210
211	mt76_tx_status_check(&mdev->mt76, true);
212
213	return 0;
214}
215
216static int mt7663s_resume(struct device *dev)
217{
218	struct sdio_func *func = dev_to_sdio_func(dev);
219	struct mt7615_dev *mdev = sdio_get_drvdata(func);
220	int err;
221
222	mt76_worker_enable(&mdev->mt76.sdio.txrx_worker);
223	mt76_worker_enable(&mdev->mt76.sdio.status_worker);
224	mt76_worker_enable(&mdev->mt76.sdio.net_worker);
225
226	err = mt7615_mcu_set_drv_ctrl(mdev);
227	if (err)
228		return err;
229
230	if (!test_bit(MT76_STATE_SUSPEND, &mdev->mphy.state) &&
231	    mt7615_firmware_offload(mdev))
232		err = mt76_connac_mcu_set_hif_suspend(&mdev->mt76, false);
233
234	return err;
235}
236
237MODULE_DEVICE_TABLE(sdio, mt7663s_table);
238MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);
239MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH);
240MODULE_FIRMWARE(MT7663_FIRMWARE_N9);
241MODULE_FIRMWARE(MT7663_ROM_PATCH);
242
243static DEFINE_SIMPLE_DEV_PM_OPS(mt7663s_pm_ops, mt7663s_suspend, mt7663s_resume);
244
245static struct sdio_driver mt7663s_driver = {
246	.name		= KBUILD_MODNAME,
247	.probe		= mt7663s_probe,
248	.remove		= mt7663s_remove,
249	.id_table	= mt7663s_table,
250	.drv.pm		= pm_sleep_ptr(&mt7663s_pm_ops),
251};
252module_sdio_driver(mt7663s_driver);
253
254MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
255MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
256MODULE_LICENSE("Dual BSD/GPL");
257