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 "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 mt7921_dev *dev = container_of(mdev, struct mt7921_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 mt7921_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_ps = mt7921_sta_ps, 103 .sta_add = mt7921_mac_sta_add, 104 .sta_assoc = mt7921_mac_sta_assoc, 105 .sta_remove = mt7921_mac_sta_remove, 106 .update_survey = mt7921_update_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 mt7921_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 }; 125 126 struct ieee80211_ops *ops; 127 struct mt7921_dev *dev; 128 struct mt76_dev *mdev; 129 u8 features; 130 int ret; 131 132 features = mt7921_check_offload_capability(&func->dev, (const char *) 133 id->driver_data); 134 135 ops = devm_kmemdup(&func->dev, &mt7921_ops, sizeof(mt7921_ops), 136 GFP_KERNEL); 137 if (!ops) 138 return -ENOMEM; 139 140 if (!(features & MT7921_FW_CAP_CNM)) { 141 ops->remain_on_channel = NULL; 142 ops->cancel_remain_on_channel = NULL; 143 ops->add_chanctx = NULL; 144 ops->remove_chanctx = NULL; 145 ops->change_chanctx = NULL; 146 ops->assign_vif_chanctx = NULL; 147 ops->unassign_vif_chanctx = NULL; 148 ops->mgd_prepare_tx = NULL; 149 ops->mgd_complete_tx = NULL; 150 } 151 152 mdev = mt76_alloc_device(&func->dev, sizeof(*dev), ops, &drv_ops); 153 if (!mdev) 154 return -ENOMEM; 155 156 dev = container_of(mdev, struct mt7921_dev, mt76); 157 dev->fw_features = features; 158 dev->hif_ops = &mt7921_sdio_ops; 159 sdio_set_drvdata(func, dev); 160 161 ret = mt76s_init(mdev, func, &mt7921s_ops); 162 if (ret < 0) 163 goto error; 164 165 ret = mt76s_hw_init(mdev, func, MT76_CONNAC2_SDIO); 166 if (ret) 167 goto error; 168 169 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 170 (mt76_rr(dev, MT_HW_REV) & 0xff); 171 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 172 173 mdev->sdio.parse_irq = mt7921s_parse_intr; 174 mdev->sdio.intr_data = devm_kmalloc(mdev->dev, 175 sizeof(struct mt7921_sdio_intr), 176 GFP_KERNEL); 177 if (!mdev->sdio.intr_data) { 178 ret = -ENOMEM; 179 goto error; 180 } 181 182 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN); 183 if (ret) 184 goto error; 185 186 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MCU); 187 if (ret) 188 goto error; 189 190 ret = mt76s_alloc_tx(mdev); 191 if (ret) 192 goto error; 193 194 ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker, 195 mt7921s_txrx_worker, "sdio-txrx"); 196 if (ret) 197 goto error; 198 199 sched_set_fifo_low(mdev->sdio.txrx_worker.task); 200 201 ret = mt7921_register_device(dev); 202 if (ret) 203 goto error; 204 205 return 0; 206 207 error: 208 mt76s_deinit(&dev->mt76); 209 mt76_free_device(&dev->mt76); 210 211 return ret; 212 } 213 214 static void mt7921s_remove(struct sdio_func *func) 215 { 216 struct mt7921_dev *dev = sdio_get_drvdata(func); 217 218 mt7921s_unregister_device(dev); 219 } 220 221 static int mt7921s_suspend(struct device *__dev) 222 { 223 struct sdio_func *func = dev_to_sdio_func(__dev); 224 struct mt7921_dev *dev = sdio_get_drvdata(func); 225 struct mt76_connac_pm *pm = &dev->pm; 226 struct mt76_dev *mdev = &dev->mt76; 227 int err; 228 229 pm->suspended = true; 230 set_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 231 232 flush_work(&dev->reset_work); 233 cancel_delayed_work_sync(&pm->ps_work); 234 cancel_work_sync(&pm->wake_work); 235 236 err = mt7921_mcu_drv_pmctrl(dev); 237 if (err < 0) 238 goto restore_suspend; 239 240 /* always enable deep sleep during suspend to reduce 241 * power consumption 242 */ 243 mt76_connac_mcu_set_deep_sleep(mdev, true); 244 245 mt76_txq_schedule_all(&dev->mphy); 246 mt76_worker_disable(&mdev->tx_worker); 247 mt76_worker_disable(&mdev->sdio.status_worker); 248 cancel_work_sync(&mdev->sdio.stat_work); 249 clear_bit(MT76_READING_STATS, &dev->mphy.state); 250 mt76_tx_status_check(mdev, true); 251 252 mt76_worker_schedule(&mdev->sdio.txrx_worker); 253 wait_event_timeout(dev->mt76.sdio.wait, 254 mt76s_txqs_empty(&dev->mt76), 5 * HZ); 255 256 /* It is supposed that SDIO bus is idle at the point */ 257 err = mt76_connac_mcu_set_hif_suspend(mdev, true); 258 if (err) 259 goto restore_worker; 260 261 mt76_worker_disable(&mdev->sdio.txrx_worker); 262 mt76_worker_disable(&mdev->sdio.net_worker); 263 264 err = mt7921_mcu_fw_pmctrl(dev); 265 if (err) 266 goto restore_txrx_worker; 267 268 sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 269 270 return 0; 271 272 restore_txrx_worker: 273 mt76_worker_enable(&mdev->sdio.net_worker); 274 mt76_worker_enable(&mdev->sdio.txrx_worker); 275 mt76_connac_mcu_set_hif_suspend(mdev, false); 276 277 restore_worker: 278 mt76_worker_enable(&mdev->tx_worker); 279 mt76_worker_enable(&mdev->sdio.status_worker); 280 281 if (!pm->ds_enable) 282 mt76_connac_mcu_set_deep_sleep(mdev, false); 283 284 restore_suspend: 285 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 286 pm->suspended = false; 287 288 if (err < 0) 289 mt7921_reset(&dev->mt76); 290 291 return err; 292 } 293 294 static int mt7921s_resume(struct device *__dev) 295 { 296 struct sdio_func *func = dev_to_sdio_func(__dev); 297 struct mt7921_dev *dev = sdio_get_drvdata(func); 298 struct mt76_connac_pm *pm = &dev->pm; 299 struct mt76_dev *mdev = &dev->mt76; 300 int err; 301 302 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 303 304 err = mt7921_mcu_drv_pmctrl(dev); 305 if (err < 0) 306 goto failed; 307 308 mt76_worker_enable(&mdev->tx_worker); 309 mt76_worker_enable(&mdev->sdio.txrx_worker); 310 mt76_worker_enable(&mdev->sdio.status_worker); 311 mt76_worker_enable(&mdev->sdio.net_worker); 312 313 /* restore previous ds setting */ 314 if (!pm->ds_enable) 315 mt76_connac_mcu_set_deep_sleep(mdev, false); 316 317 err = mt76_connac_mcu_set_hif_suspend(mdev, false); 318 failed: 319 pm->suspended = false; 320 321 if (err < 0) 322 mt7921_reset(&dev->mt76); 323 324 return err; 325 } 326 327 MODULE_DEVICE_TABLE(sdio, mt7921s_table); 328 MODULE_FIRMWARE(MT7921_FIRMWARE_WM); 329 MODULE_FIRMWARE(MT7921_ROM_PATCH); 330 331 static DEFINE_SIMPLE_DEV_PM_OPS(mt7921s_pm_ops, mt7921s_suspend, mt7921s_resume); 332 333 static struct sdio_driver mt7921s_driver = { 334 .name = KBUILD_MODNAME, 335 .probe = mt7921s_probe, 336 .remove = mt7921s_remove, 337 .id_table = mt7921s_table, 338 .drv.pm = pm_sleep_ptr(&mt7921s_pm_ops), 339 }; 340 module_sdio_driver(mt7921s_driver); 341 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); 342 MODULE_LICENSE("Dual BSD/GPL"); 343