1 // SPDX-License-Identifier: BSD-3-Clause-Clear 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 { SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, 0x7902), 23 .driver_data = (kernel_ulong_t)MT7902_FIRMWARE_WM }, 24 { } /* Terminating entry */ 25 }; 26 27 static void mt7921s_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 mt792x_dev *dev = container_of(mdev, struct mt792x_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 39 mt76s_txrx_worker(sdio); 40 mt76_connac_pm_unref(&dev->mphy, &dev->pm); 41 } 42 43 static void mt7921s_unregister_device(struct mt792x_dev *dev) 44 { 45 struct mt76_connac_pm *pm = &dev->pm; 46 47 cancel_work_sync(&dev->init_work); 48 mt76_unregister_device(&dev->mt76); 49 cancel_delayed_work_sync(&pm->ps_work); 50 cancel_work_sync(&pm->wake_work); 51 52 mt76s_deinit(&dev->mt76); 53 mt7921s_wfsys_reset(dev); 54 skb_queue_purge(&dev->mt76.mcu.res_q); 55 56 mt76_free_device(&dev->mt76); 57 } 58 59 static int mt7921s_parse_intr(struct mt76_dev *dev, struct mt76s_intr *intr) 60 { 61 struct mt76_sdio *sdio = &dev->sdio; 62 struct mt7921_sdio_intr *irq_data = sdio->intr_data; 63 int i, err; 64 65 sdio_claim_host(sdio->func); 66 err = sdio_readsb(sdio->func, irq_data, MCR_WHISR, sizeof(*irq_data)); 67 sdio_release_host(sdio->func); 68 69 if (err < 0) 70 return err; 71 72 if (irq_data->rx.num[0] > 16 || 73 irq_data->rx.num[1] > 128) 74 return -EINVAL; 75 76 intr->isr = irq_data->isr; 77 intr->rec_mb = irq_data->rec_mb; 78 intr->tx.wtqcr = irq_data->tx.wtqcr; 79 intr->rx.num = irq_data->rx.num; 80 for (i = 0; i < 2 ; i++) { 81 if (!i) 82 intr->rx.len[0] = irq_data->rx.len0; 83 else 84 intr->rx.len[1] = irq_data->rx.len1; 85 } 86 87 return 0; 88 } 89 90 static int mt7921s_probe(struct sdio_func *func, 91 const struct sdio_device_id *id) 92 { 93 static const struct mt76_driver_ops drv_ops = { 94 .txwi_size = MT_SDIO_TXD_SIZE, 95 .drv_flags = MT_DRV_AMSDU_OFFLOAD, 96 .survey_flags = SURVEY_INFO_TIME_TX | 97 SURVEY_INFO_TIME_RX | 98 SURVEY_INFO_TIME_BSS_RX, 99 .tx_prepare_skb = mt7921_usb_sdio_tx_prepare_skb, 100 .tx_complete_skb = mt7921_usb_sdio_tx_complete_skb, 101 .tx_status_data = mt7921_usb_sdio_tx_status_data, 102 .rx_skb = mt7921_queue_rx_skb, 103 .rx_check = mt7921_rx_check, 104 .sta_add = mt7921_mac_sta_add, 105 .sta_event = mt7921_mac_sta_event, 106 .sta_remove = mt7921_mac_sta_remove, 107 .update_survey = mt792x_update_channel, 108 .set_channel = mt7921_set_channel, 109 }; 110 static const struct mt76_bus_ops mt7921s_ops = { 111 .rr = mt76s_rr, 112 .rmw = mt76s_rmw, 113 .wr = mt76s_wr, 114 .write_copy = mt76s_write_copy, 115 .read_copy = mt76s_read_copy, 116 .wr_rp = mt76s_wr_rp, 117 .rd_rp = mt76s_rd_rp, 118 .type = MT76_BUS_SDIO, 119 }; 120 static const struct mt792x_hif_ops mt7921_sdio_ops = { 121 .init_reset = mt7921s_init_reset, 122 .reset = mt7921s_mac_reset, 123 .mcu_init = mt7921s_mcu_init, 124 .drv_own = mt7921s_mcu_drv_pmctrl, 125 .fw_own = mt7921s_mcu_fw_pmctrl, 126 }; 127 struct ieee80211_ops *ops; 128 struct mt792x_dev *dev; 129 struct mt76_dev *mdev; 130 u8 features; 131 int ret; 132 133 ops = mt792x_get_mac80211_ops(&func->dev, &mt7921_ops, 134 (void *)id->driver_data, &features); 135 if (!ops) 136 return -ENOMEM; 137 138 mdev = mt76_alloc_device(&func->dev, sizeof(*dev), ops, &drv_ops); 139 if (!mdev) 140 return -ENOMEM; 141 142 dev = container_of(mdev, struct mt792x_dev, mt76); 143 dev->fw_features = features; 144 dev->hif_ops = &mt7921_sdio_ops; 145 sdio_set_drvdata(func, dev); 146 147 ret = mt76s_init(mdev, func, &mt7921s_ops); 148 if (ret < 0) 149 goto error; 150 151 ret = mt76s_hw_init(mdev, func, MT76_CONNAC2_SDIO); 152 if (ret) 153 goto error; 154 155 atomic_set(&mdev->bus_hung, false); 156 157 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 158 (mt76_rr(dev, MT_HW_REV) & 0xff); 159 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 160 161 mdev->sdio.parse_irq = mt7921s_parse_intr; 162 mdev->sdio.intr_data = devm_kmalloc(mdev->dev, 163 sizeof(struct mt7921_sdio_intr), 164 GFP_KERNEL); 165 if (!mdev->sdio.intr_data) { 166 ret = -ENOMEM; 167 goto error; 168 } 169 170 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN); 171 if (ret) 172 goto error; 173 174 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MCU); 175 if (ret) 176 goto error; 177 178 ret = mt76s_alloc_tx(mdev); 179 if (ret) 180 goto error; 181 182 ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker, 183 mt7921s_txrx_worker, "sdio-txrx"); 184 if (ret) 185 goto error; 186 187 sched_set_fifo_low(mdev->sdio.txrx_worker.task); 188 189 ret = mt7921_register_device(dev); 190 if (ret) 191 goto error; 192 193 return 0; 194 195 error: 196 mt76s_deinit(&dev->mt76); 197 mt76_free_device(&dev->mt76); 198 199 return ret; 200 } 201 202 static void mt7921s_remove(struct sdio_func *func) 203 { 204 struct mt792x_dev *dev = sdio_get_drvdata(func); 205 206 mt7921s_unregister_device(dev); 207 } 208 209 static int mt7921s_suspend(struct device *__dev) 210 { 211 struct sdio_func *func = dev_to_sdio_func(__dev); 212 struct mt792x_dev *dev = sdio_get_drvdata(func); 213 struct mt76_connac_pm *pm = &dev->pm; 214 struct mt76_dev *mdev = &dev->mt76; 215 int err; 216 217 pm->suspended = true; 218 set_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 219 220 flush_work(&dev->reset_work); 221 cancel_delayed_work_sync(&pm->ps_work); 222 cancel_work_sync(&pm->wake_work); 223 224 mt7921_roc_abort_sync(dev); 225 226 err = mt792x_mcu_drv_pmctrl(dev); 227 if (err < 0) 228 goto restore_suspend; 229 230 /* always enable deep sleep during suspend to reduce 231 * power consumption 232 */ 233 mt76_connac_mcu_set_deep_sleep(mdev, true); 234 235 mt76_txq_schedule_all(&dev->mphy); 236 mt76_worker_disable(&mdev->tx_worker); 237 mt76_worker_disable(&mdev->sdio.status_worker); 238 mt76_worker_disable(&mdev->sdio.stat_worker); 239 clear_bit(MT76_READING_STATS, &dev->mphy.state); 240 mt76_tx_status_check(mdev, true); 241 242 mt76_worker_schedule(&mdev->sdio.txrx_worker); 243 wait_event_timeout(dev->mt76.sdio.wait, 244 mt76s_txqs_empty(&dev->mt76), 5 * HZ); 245 246 /* It is supposed that SDIO bus is idle at the point */ 247 err = mt76_connac_mcu_set_hif_suspend(mdev, true, true); 248 if (err) 249 goto restore_worker; 250 251 mt76_worker_disable(&mdev->sdio.txrx_worker); 252 mt76_worker_disable(&mdev->sdio.net_worker); 253 254 err = mt792x_mcu_fw_pmctrl(dev); 255 if (err) 256 goto restore_txrx_worker; 257 258 sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 259 260 return 0; 261 262 restore_txrx_worker: 263 mt76_worker_enable(&mdev->sdio.net_worker); 264 mt76_worker_enable(&mdev->sdio.txrx_worker); 265 mt76_connac_mcu_set_hif_suspend(mdev, false, true); 266 267 restore_worker: 268 mt76_worker_enable(&mdev->tx_worker); 269 mt76_worker_enable(&mdev->sdio.status_worker); 270 mt76_worker_enable(&mdev->sdio.stat_worker); 271 272 if (!pm->ds_enable) 273 mt76_connac_mcu_set_deep_sleep(mdev, false); 274 275 restore_suspend: 276 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 277 pm->suspended = false; 278 279 if (err < 0) 280 mt792x_reset(&dev->mt76); 281 282 return err; 283 } 284 285 static int mt7921s_resume(struct device *__dev) 286 { 287 struct sdio_func *func = dev_to_sdio_func(__dev); 288 struct mt792x_dev *dev = sdio_get_drvdata(func); 289 struct mt76_connac_pm *pm = &dev->pm; 290 struct mt76_dev *mdev = &dev->mt76; 291 int err; 292 293 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 294 295 err = mt792x_mcu_drv_pmctrl(dev); 296 if (err < 0) 297 goto failed; 298 299 mt76_worker_enable(&mdev->tx_worker); 300 mt76_worker_enable(&mdev->sdio.txrx_worker); 301 mt76_worker_enable(&mdev->sdio.status_worker); 302 mt76_worker_enable(&mdev->sdio.net_worker); 303 mt76_worker_enable(&mdev->sdio.stat_worker); 304 305 /* restore previous ds setting */ 306 if (!pm->ds_enable) 307 mt76_connac_mcu_set_deep_sleep(mdev, false); 308 309 err = mt76_connac_mcu_set_hif_suspend(mdev, false, true); 310 failed: 311 pm->suspended = false; 312 313 if (err < 0) 314 mt792x_reset(&dev->mt76); 315 316 return err; 317 } 318 319 MODULE_DEVICE_TABLE(sdio, mt7921s_table); 320 MODULE_FIRMWARE(MT7921_FIRMWARE_WM); 321 MODULE_FIRMWARE(MT7921_ROM_PATCH); 322 MODULE_FIRMWARE(MT7902_FIRMWARE_WM); 323 MODULE_FIRMWARE(MT7902_ROM_PATCH); 324 325 static DEFINE_SIMPLE_DEV_PM_OPS(mt7921s_pm_ops, mt7921s_suspend, mt7921s_resume); 326 327 static struct sdio_driver mt7921s_driver = { 328 .name = KBUILD_MODNAME, 329 .probe = mt7921s_probe, 330 .remove = mt7921s_remove, 331 .id_table = mt7921s_table, 332 .drv.pm = pm_sleep_ptr(&mt7921s_pm_ops), 333 }; 334 module_sdio_driver(mt7921s_driver); 335 MODULE_DESCRIPTION("MediaTek MT7921S (SDIO) wireless driver"); 336 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); 337 MODULE_LICENSE("Dual BSD/GPL"); 338