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
22 static const struct sdio_device_id mt7663s_table[] = {
23 { SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, 0x7603) },
24 { } /* Terminating entry */
25 };
26
mt7663s_txrx_worker(struct mt76_worker * w)27 static 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
mt7663s_init_work(struct work_struct * work)42 static 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
mt7663s_parse_intr(struct mt76_dev * dev,struct mt76s_intr * intr)53 static 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 err = sdio_readsb(sdio->func, irq_data, MCR_WHISR, sizeof(*irq_data));
60 if (err)
61 return err;
62
63 intr->isr = irq_data->isr;
64 intr->rec_mb = irq_data->rec_mb;
65 intr->tx.wtqcr = irq_data->tx.wtqcr;
66 intr->rx.num = irq_data->rx.num;
67 for (i = 0; i < 2 ; i++)
68 intr->rx.len[i] = irq_data->rx.len[i];
69
70 return 0;
71 }
72
mt7663s_probe(struct sdio_func * func,const struct sdio_device_id * id)73 static int mt7663s_probe(struct sdio_func *func,
74 const struct sdio_device_id *id)
75 {
76 static const struct mt76_driver_ops drv_ops = {
77 .txwi_size = MT_USB_TXD_SIZE,
78 .drv_flags = MT_DRV_RX_DMA_HDR,
79 .tx_prepare_skb = mt7663_usb_sdio_tx_prepare_skb,
80 .tx_complete_skb = mt7663_usb_sdio_tx_complete_skb,
81 .tx_status_data = mt7663_usb_sdio_tx_status_data,
82 .rx_skb = mt7615_queue_rx_skb,
83 .sta_ps = mt7615_sta_ps,
84 .sta_add = mt7615_mac_sta_add,
85 .sta_remove = mt7615_mac_sta_remove,
86 .update_survey = mt7615_update_channel,
87 };
88 static const struct mt76_bus_ops mt7663s_ops = {
89 .rr = mt76s_rr,
90 .rmw = mt76s_rmw,
91 .wr = mt76s_wr,
92 .write_copy = mt76s_write_copy,
93 .read_copy = mt76s_read_copy,
94 .wr_rp = mt76s_wr_rp,
95 .rd_rp = mt76s_rd_rp,
96 .type = MT76_BUS_SDIO,
97 };
98 struct ieee80211_ops *ops;
99 struct mt7615_dev *dev;
100 struct mt76_dev *mdev;
101 int i, ret;
102
103 ops = devm_kmemdup(&func->dev, &mt7615_ops, sizeof(mt7615_ops),
104 GFP_KERNEL);
105 if (!ops)
106 return -ENOMEM;
107
108 mdev = mt76_alloc_device(&func->dev, sizeof(*dev), ops, &drv_ops);
109 if (!mdev)
110 return -ENOMEM;
111
112 dev = container_of(mdev, struct mt7615_dev, mt76);
113
114 INIT_WORK(&dev->mcu_work, mt7663s_init_work);
115 dev->reg_map = mt7663_usb_sdio_reg_map;
116 dev->ops = ops;
117 sdio_set_drvdata(func, dev);
118
119 ret = mt76s_init(mdev, func, &mt7663s_ops);
120 if (ret < 0)
121 goto error;
122
123 ret = mt76s_hw_init(mdev, func, MT76_CONNAC_SDIO);
124 if (ret)
125 goto error;
126
127 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
128 (mt76_rr(dev, MT_HW_REV) & 0xff);
129 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
130
131 mdev->sdio.parse_irq = mt7663s_parse_intr;
132 mdev->sdio.intr_data = devm_kmalloc(mdev->dev,
133 sizeof(struct mt7663s_intr),
134 GFP_KERNEL);
135 if (!mdev->sdio.intr_data) {
136 ret = -ENOMEM;
137 goto error;
138 }
139
140 for (i = 0; i < ARRAY_SIZE(mdev->sdio.xmit_buf); i++) {
141 mdev->sdio.xmit_buf[i] = devm_kmalloc(mdev->dev,
142 MT76S_XMIT_BUF_SZ,
143 GFP_KERNEL);
144 if (!mdev->sdio.xmit_buf[i]) {
145 ret = -ENOMEM;
146 goto error;
147 }
148 }
149
150 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN);
151 if (ret)
152 goto error;
153
154 ret = mt76s_alloc_tx(mdev);
155 if (ret)
156 goto error;
157
158 ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker,
159 mt7663s_txrx_worker, "sdio-txrx");
160 if (ret)
161 goto error;
162
163 sched_set_fifo_low(mdev->sdio.txrx_worker.task);
164
165 ret = mt7663_usb_sdio_register_device(dev);
166 if (ret)
167 goto error;
168
169 return 0;
170
171 error:
172 mt76s_deinit(&dev->mt76);
173 mt76_free_device(&dev->mt76);
174
175 return ret;
176 }
177
mt7663s_remove(struct sdio_func * func)178 static void mt7663s_remove(struct sdio_func *func)
179 {
180 struct mt7615_dev *dev = sdio_get_drvdata(func);
181
182 if (!test_and_clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
183 return;
184
185 ieee80211_unregister_hw(dev->mt76.hw);
186 mt76s_deinit(&dev->mt76);
187 mt76_free_device(&dev->mt76);
188 }
189
190 #ifdef CONFIG_PM
mt7663s_suspend(struct device * dev)191 static int mt7663s_suspend(struct device *dev)
192 {
193 struct sdio_func *func = dev_to_sdio_func(dev);
194 struct mt7615_dev *mdev = sdio_get_drvdata(func);
195 int err;
196
197 if (!test_bit(MT76_STATE_SUSPEND, &mdev->mphy.state) &&
198 mt7615_firmware_offload(mdev)) {
199 int err;
200
201 err = mt76_connac_mcu_set_hif_suspend(&mdev->mt76, true);
202 if (err < 0)
203 return err;
204 }
205
206 sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
207
208 err = mt7615_mcu_set_fw_ctrl(mdev);
209 if (err)
210 return err;
211
212 mt76_worker_disable(&mdev->mt76.sdio.txrx_worker);
213 mt76_worker_disable(&mdev->mt76.sdio.status_worker);
214 mt76_worker_disable(&mdev->mt76.sdio.net_worker);
215
216 cancel_work_sync(&mdev->mt76.sdio.stat_work);
217 clear_bit(MT76_READING_STATS, &mdev->mphy.state);
218
219 mt76_tx_status_check(&mdev->mt76, true);
220
221 return 0;
222 }
223
mt7663s_resume(struct device * dev)224 static int mt7663s_resume(struct device *dev)
225 {
226 struct sdio_func *func = dev_to_sdio_func(dev);
227 struct mt7615_dev *mdev = sdio_get_drvdata(func);
228 int err;
229
230 mt76_worker_enable(&mdev->mt76.sdio.txrx_worker);
231 mt76_worker_enable(&mdev->mt76.sdio.status_worker);
232 mt76_worker_enable(&mdev->mt76.sdio.net_worker);
233
234 err = mt7615_mcu_set_drv_ctrl(mdev);
235 if (err)
236 return err;
237
238 if (!test_bit(MT76_STATE_SUSPEND, &mdev->mphy.state) &&
239 mt7615_firmware_offload(mdev))
240 err = mt76_connac_mcu_set_hif_suspend(&mdev->mt76, false);
241
242 return err;
243 }
244
245 static const struct dev_pm_ops mt7663s_pm_ops = {
246 .suspend = mt7663s_suspend,
247 .resume = mt7663s_resume,
248 };
249 #endif
250
251 MODULE_DEVICE_TABLE(sdio, mt7663s_table);
252 MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);
253 MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH);
254 MODULE_FIRMWARE(MT7663_FIRMWARE_N9);
255 MODULE_FIRMWARE(MT7663_ROM_PATCH);
256
257 static struct sdio_driver mt7663s_driver = {
258 .name = KBUILD_MODNAME,
259 .probe = mt7663s_probe,
260 .remove = mt7663s_remove,
261 .id_table = mt7663s_table,
262 #ifdef CONFIG_PM
263 .drv = {
264 .pm = &mt7663s_pm_ops,
265 }
266 #endif
267 };
268 module_sdio_driver(mt7663s_driver);
269
270 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
271 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
272 MODULE_LICENSE("Dual BSD/GPL");
273