1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2021 MediaTek Inc. 3 * 4 */ 5 6 #include <linux/kernel.h> 7 #include <linux/iopoll.h> 8 #include <linux/module.h> 9 10 #include <linux/mmc/host.h> 11 #include <linux/mmc/sdio_ids.h> 12 #include <linux/mmc/sdio_func.h> 13 14 #include "mt7921.h" 15 #include "../sdio.h" 16 #include "../mt76_connac2_mac.h" 17 #include "mcu.h" 18 19 static const struct sdio_device_id mt7921s_table[] = { 20 { SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, 0x7901), 21 .driver_data = (kernel_ulong_t)MT7921_FIRMWARE_WM }, 22 { } /* Terminating entry */ 23 }; 24 25 static void mt7921s_txrx_worker(struct mt76_worker *w) 26 { 27 struct mt76_sdio *sdio = container_of(w, struct mt76_sdio, 28 txrx_worker); 29 struct mt76_dev *mdev = container_of(sdio, struct mt76_dev, sdio); 30 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 31 32 if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) { 33 queue_work(mdev->wq, &dev->pm.wake_work); 34 return; 35 } 36 37 mt76s_txrx_worker(sdio); 38 mt76_connac_pm_unref(&dev->mphy, &dev->pm); 39 } 40 41 static void mt7921s_unregister_device(struct mt792x_dev *dev) 42 { 43 struct mt76_connac_pm *pm = &dev->pm; 44 45 cancel_work_sync(&dev->init_work); 46 mt76_unregister_device(&dev->mt76); 47 cancel_delayed_work_sync(&pm->ps_work); 48 cancel_work_sync(&pm->wake_work); 49 50 mt76s_deinit(&dev->mt76); 51 mt7921s_wfsys_reset(dev); 52 skb_queue_purge(&dev->mt76.mcu.res_q); 53 54 mt76_free_device(&dev->mt76); 55 } 56 57 static int mt7921s_parse_intr(struct mt76_dev *dev, struct mt76s_intr *intr) 58 { 59 struct mt76_sdio *sdio = &dev->sdio; 60 struct mt7921_sdio_intr *irq_data = sdio->intr_data; 61 int i, err; 62 63 sdio_claim_host(sdio->func); 64 err = sdio_readsb(sdio->func, irq_data, MCR_WHISR, sizeof(*irq_data)); 65 sdio_release_host(sdio->func); 66 67 if (err < 0) 68 return err; 69 70 if (irq_data->rx.num[0] > 16 || 71 irq_data->rx.num[1] > 128) 72 return -EINVAL; 73 74 intr->isr = irq_data->isr; 75 intr->rec_mb = irq_data->rec_mb; 76 intr->tx.wtqcr = irq_data->tx.wtqcr; 77 intr->rx.num = irq_data->rx.num; 78 for (i = 0; i < 2 ; i++) { 79 if (!i) 80 intr->rx.len[0] = irq_data->rx.len0; 81 else 82 intr->rx.len[1] = irq_data->rx.len1; 83 } 84 85 return 0; 86 } 87 88 static int mt7921s_probe(struct sdio_func *func, 89 const struct sdio_device_id *id) 90 { 91 static const struct mt76_driver_ops drv_ops = { 92 .txwi_size = MT_SDIO_TXD_SIZE, 93 .drv_flags = MT_DRV_AMSDU_OFFLOAD, 94 .survey_flags = SURVEY_INFO_TIME_TX | 95 SURVEY_INFO_TIME_RX | 96 SURVEY_INFO_TIME_BSS_RX, 97 .tx_prepare_skb = mt7921_usb_sdio_tx_prepare_skb, 98 .tx_complete_skb = mt7921_usb_sdio_tx_complete_skb, 99 .tx_status_data = mt7921_usb_sdio_tx_status_data, 100 .rx_skb = mt7921_queue_rx_skb, 101 .rx_check = mt7921_rx_check, 102 .sta_add = mt7921_mac_sta_add, 103 .sta_event = mt7921_mac_sta_event, 104 .sta_remove = mt7921_mac_sta_remove, 105 .update_survey = mt792x_update_channel, 106 .set_channel = mt7921_set_channel, 107 }; 108 static const struct mt76_bus_ops mt7921s_ops = { 109 .rr = mt76s_rr, 110 .rmw = mt76s_rmw, 111 .wr = mt76s_wr, 112 .write_copy = mt76s_write_copy, 113 .read_copy = mt76s_read_copy, 114 .wr_rp = mt76s_wr_rp, 115 .rd_rp = mt76s_rd_rp, 116 .type = MT76_BUS_SDIO, 117 }; 118 static const struct mt792x_hif_ops mt7921_sdio_ops = { 119 .init_reset = mt7921s_init_reset, 120 .reset = mt7921s_mac_reset, 121 .mcu_init = mt7921s_mcu_init, 122 .drv_own = mt7921s_mcu_drv_pmctrl, 123 .fw_own = mt7921s_mcu_fw_pmctrl, 124 }; 125 struct ieee80211_ops *ops; 126 struct mt792x_dev *dev; 127 struct mt76_dev *mdev; 128 u8 features; 129 int ret; 130 131 ops = mt792x_get_mac80211_ops(&func->dev, &mt7921_ops, 132 (void *)id->driver_data, &features); 133 if (!ops) 134 return -ENOMEM; 135 136 mdev = mt76_alloc_device(&func->dev, sizeof(*dev), ops, &drv_ops); 137 if (!mdev) 138 return -ENOMEM; 139 140 dev = container_of(mdev, struct mt792x_dev, mt76); 141 dev->fw_features = features; 142 dev->hif_ops = &mt7921_sdio_ops; 143 sdio_set_drvdata(func, dev); 144 145 ret = mt76s_init(mdev, func, &mt7921s_ops); 146 if (ret < 0) 147 goto error; 148 149 ret = mt76s_hw_init(mdev, func, MT76_CONNAC2_SDIO); 150 if (ret) 151 goto error; 152 153 atomic_set(&mdev->bus_hung, false); 154 155 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 156 (mt76_rr(dev, MT_HW_REV) & 0xff); 157 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 158 159 mdev->sdio.parse_irq = mt7921s_parse_intr; 160 mdev->sdio.intr_data = devm_kmalloc(mdev->dev, 161 sizeof(struct mt7921_sdio_intr), 162 GFP_KERNEL); 163 if (!mdev->sdio.intr_data) { 164 ret = -ENOMEM; 165 goto error; 166 } 167 168 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN); 169 if (ret) 170 goto error; 171 172 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MCU); 173 if (ret) 174 goto error; 175 176 ret = mt76s_alloc_tx(mdev); 177 if (ret) 178 goto error; 179 180 ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker, 181 mt7921s_txrx_worker, "sdio-txrx"); 182 if (ret) 183 goto error; 184 185 sched_set_fifo_low(mdev->sdio.txrx_worker.task); 186 187 ret = mt7921_register_device(dev); 188 if (ret) 189 goto error; 190 191 return 0; 192 193 error: 194 mt76s_deinit(&dev->mt76); 195 mt76_free_device(&dev->mt76); 196 197 return ret; 198 } 199 200 static void mt7921s_remove(struct sdio_func *func) 201 { 202 struct mt792x_dev *dev = sdio_get_drvdata(func); 203 204 mt7921s_unregister_device(dev); 205 } 206 207 static int mt7921s_suspend(struct device *__dev) 208 { 209 struct sdio_func *func = dev_to_sdio_func(__dev); 210 struct mt792x_dev *dev = sdio_get_drvdata(func); 211 struct mt76_connac_pm *pm = &dev->pm; 212 struct mt76_dev *mdev = &dev->mt76; 213 int err; 214 215 pm->suspended = true; 216 set_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 217 218 flush_work(&dev->reset_work); 219 cancel_delayed_work_sync(&pm->ps_work); 220 cancel_work_sync(&pm->wake_work); 221 222 mt7921_roc_abort_sync(dev); 223 224 err = mt792x_mcu_drv_pmctrl(dev); 225 if (err < 0) 226 goto restore_suspend; 227 228 /* always enable deep sleep during suspend to reduce 229 * power consumption 230 */ 231 mt76_connac_mcu_set_deep_sleep(mdev, true); 232 233 mt76_txq_schedule_all(&dev->mphy); 234 mt76_worker_disable(&mdev->tx_worker); 235 mt76_worker_disable(&mdev->sdio.status_worker); 236 mt76_worker_disable(&mdev->sdio.stat_worker); 237 clear_bit(MT76_READING_STATS, &dev->mphy.state); 238 mt76_tx_status_check(mdev, true); 239 240 mt76_worker_schedule(&mdev->sdio.txrx_worker); 241 wait_event_timeout(dev->mt76.sdio.wait, 242 mt76s_txqs_empty(&dev->mt76), 5 * HZ); 243 244 /* It is supposed that SDIO bus is idle at the point */ 245 err = mt76_connac_mcu_set_hif_suspend(mdev, true, true); 246 if (err) 247 goto restore_worker; 248 249 mt76_worker_disable(&mdev->sdio.txrx_worker); 250 mt76_worker_disable(&mdev->sdio.net_worker); 251 252 err = mt792x_mcu_fw_pmctrl(dev); 253 if (err) 254 goto restore_txrx_worker; 255 256 sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 257 258 return 0; 259 260 restore_txrx_worker: 261 mt76_worker_enable(&mdev->sdio.net_worker); 262 mt76_worker_enable(&mdev->sdio.txrx_worker); 263 mt76_connac_mcu_set_hif_suspend(mdev, false, true); 264 265 restore_worker: 266 mt76_worker_enable(&mdev->tx_worker); 267 mt76_worker_enable(&mdev->sdio.status_worker); 268 mt76_worker_enable(&mdev->sdio.stat_worker); 269 270 if (!pm->ds_enable) 271 mt76_connac_mcu_set_deep_sleep(mdev, false); 272 273 restore_suspend: 274 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 275 pm->suspended = false; 276 277 if (err < 0) 278 mt792x_reset(&dev->mt76); 279 280 return err; 281 } 282 283 static int mt7921s_resume(struct device *__dev) 284 { 285 struct sdio_func *func = dev_to_sdio_func(__dev); 286 struct mt792x_dev *dev = sdio_get_drvdata(func); 287 struct mt76_connac_pm *pm = &dev->pm; 288 struct mt76_dev *mdev = &dev->mt76; 289 int err; 290 291 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 292 293 err = mt792x_mcu_drv_pmctrl(dev); 294 if (err < 0) 295 goto failed; 296 297 mt76_worker_enable(&mdev->tx_worker); 298 mt76_worker_enable(&mdev->sdio.txrx_worker); 299 mt76_worker_enable(&mdev->sdio.status_worker); 300 mt76_worker_enable(&mdev->sdio.net_worker); 301 mt76_worker_enable(&mdev->sdio.stat_worker); 302 303 /* restore previous ds setting */ 304 if (!pm->ds_enable) 305 mt76_connac_mcu_set_deep_sleep(mdev, false); 306 307 err = mt76_connac_mcu_set_hif_suspend(mdev, false, true); 308 failed: 309 pm->suspended = false; 310 311 if (err < 0) 312 mt792x_reset(&dev->mt76); 313 314 return err; 315 } 316 317 MODULE_DEVICE_TABLE(sdio, mt7921s_table); 318 MODULE_FIRMWARE(MT7921_FIRMWARE_WM); 319 MODULE_FIRMWARE(MT7921_ROM_PATCH); 320 321 static DEFINE_SIMPLE_DEV_PM_OPS(mt7921s_pm_ops, mt7921s_suspend, mt7921s_resume); 322 323 static struct sdio_driver mt7921s_driver = { 324 .name = KBUILD_MODNAME, 325 .probe = mt7921s_probe, 326 .remove = mt7921s_remove, 327 .id_table = mt7921s_table, 328 .drv.pm = pm_sleep_ptr(&mt7921s_pm_ops), 329 }; 330 module_sdio_driver(mt7921s_driver); 331 MODULE_DESCRIPTION("MediaTek MT7921S (SDIO) wireless driver"); 332 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); 333 MODULE_LICENSE("Dual BSD/GPL"); 334