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 { } /* Terminating entry */ 22 }; 23 24 static void mt7921s_txrx_worker(struct mt76_worker *w) 25 { 26 struct mt76_sdio *sdio = container_of(w, struct mt76_sdio, 27 txrx_worker); 28 struct mt76_dev *mdev = container_of(sdio, struct mt76_dev, sdio); 29 struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76); 30 31 if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) { 32 queue_work(mdev->wq, &dev->pm.wake_work); 33 return; 34 } 35 36 mt76s_txrx_worker(sdio); 37 mt76_connac_pm_unref(&dev->mphy, &dev->pm); 38 } 39 40 static void mt7921s_unregister_device(struct mt7921_dev *dev) 41 { 42 struct mt76_connac_pm *pm = &dev->pm; 43 44 mt76_unregister_device(&dev->mt76); 45 cancel_delayed_work_sync(&pm->ps_work); 46 cancel_work_sync(&pm->wake_work); 47 48 mt76s_deinit(&dev->mt76); 49 mt7921s_wfsys_reset(dev); 50 mt7921_mcu_exit(dev); 51 52 mt76_free_device(&dev->mt76); 53 } 54 55 static int mt7921s_parse_intr(struct mt76_dev *dev, struct mt76s_intr *intr) 56 { 57 struct mt76_sdio *sdio = &dev->sdio; 58 struct mt7921_sdio_intr *irq_data = sdio->intr_data; 59 int i, err; 60 61 sdio_claim_host(sdio->func); 62 err = sdio_readsb(sdio->func, irq_data, MCR_WHISR, sizeof(*irq_data)); 63 sdio_release_host(sdio->func); 64 65 if (err < 0) 66 return err; 67 68 if (irq_data->rx.num[0] > 16 || 69 irq_data->rx.num[1] > 128) 70 return -EINVAL; 71 72 intr->isr = irq_data->isr; 73 intr->rec_mb = irq_data->rec_mb; 74 intr->tx.wtqcr = irq_data->tx.wtqcr; 75 intr->rx.num = irq_data->rx.num; 76 for (i = 0; i < 2 ; i++) { 77 if (!i) 78 intr->rx.len[0] = irq_data->rx.len0; 79 else 80 intr->rx.len[1] = irq_data->rx.len1; 81 } 82 83 return 0; 84 } 85 86 static int mt7921s_probe(struct sdio_func *func, 87 const struct sdio_device_id *id) 88 { 89 static const struct mt76_driver_ops drv_ops = { 90 .txwi_size = MT_SDIO_TXD_SIZE, 91 .survey_flags = SURVEY_INFO_TIME_TX | 92 SURVEY_INFO_TIME_RX | 93 SURVEY_INFO_TIME_BSS_RX, 94 .tx_prepare_skb = mt7921s_tx_prepare_skb, 95 .tx_complete_skb = mt7921s_tx_complete_skb, 96 .tx_status_data = mt7921s_tx_status_data, 97 .rx_skb = mt7921_queue_rx_skb, 98 .sta_ps = mt7921_sta_ps, 99 .sta_add = mt7921_mac_sta_add, 100 .sta_assoc = mt7921_mac_sta_assoc, 101 .sta_remove = mt7921_mac_sta_remove, 102 .update_survey = mt7921_update_channel, 103 }; 104 static const struct mt76_bus_ops mt7921s_ops = { 105 .rr = mt76s_rr, 106 .rmw = mt76s_rmw, 107 .wr = mt76s_wr, 108 .write_copy = mt76s_write_copy, 109 .read_copy = mt76s_read_copy, 110 .wr_rp = mt76s_wr_rp, 111 .rd_rp = mt76s_rd_rp, 112 .type = MT76_BUS_SDIO, 113 }; 114 static const struct mt7921_hif_ops mt7921_sdio_ops = { 115 .init_reset = mt7921s_init_reset, 116 .reset = mt7921s_mac_reset, 117 .mcu_init = mt7921s_mcu_init, 118 .drv_own = mt7921s_mcu_drv_pmctrl, 119 .fw_own = mt7921s_mcu_fw_pmctrl, 120 }; 121 122 struct mt7921_dev *dev; 123 struct mt76_dev *mdev; 124 int ret; 125 126 mdev = mt76_alloc_device(&func->dev, sizeof(*dev), &mt7921_ops, 127 &drv_ops); 128 if (!mdev) 129 return -ENOMEM; 130 131 dev = container_of(mdev, struct mt7921_dev, mt76); 132 dev->hif_ops = &mt7921_sdio_ops; 133 134 sdio_set_drvdata(func, dev); 135 136 ret = mt76s_init(mdev, func, &mt7921s_ops); 137 if (ret < 0) 138 goto error; 139 140 ret = mt76s_hw_init(mdev, func, MT76_CONNAC2_SDIO); 141 if (ret) 142 goto error; 143 144 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 145 (mt76_rr(dev, MT_HW_REV) & 0xff); 146 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 147 148 mdev->sdio.parse_irq = mt7921s_parse_intr; 149 mdev->sdio.intr_data = devm_kmalloc(mdev->dev, 150 sizeof(struct mt7921_sdio_intr), 151 GFP_KERNEL); 152 if (!mdev->sdio.intr_data) { 153 ret = -ENOMEM; 154 goto error; 155 } 156 157 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN); 158 if (ret) 159 goto error; 160 161 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MCU); 162 if (ret) 163 goto error; 164 165 ret = mt76s_alloc_tx(mdev); 166 if (ret) 167 goto error; 168 169 ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker, 170 mt7921s_txrx_worker, "sdio-txrx"); 171 if (ret) 172 goto error; 173 174 sched_set_fifo_low(mdev->sdio.txrx_worker.task); 175 176 ret = mt7921_register_device(dev); 177 if (ret) 178 goto error; 179 180 return 0; 181 182 error: 183 mt76s_deinit(&dev->mt76); 184 mt76_free_device(&dev->mt76); 185 186 return ret; 187 } 188 189 static void mt7921s_remove(struct sdio_func *func) 190 { 191 struct mt7921_dev *dev = sdio_get_drvdata(func); 192 193 mt7921s_unregister_device(dev); 194 } 195 196 #ifdef CONFIG_PM 197 static int mt7921s_suspend(struct device *__dev) 198 { 199 struct sdio_func *func = dev_to_sdio_func(__dev); 200 struct mt7921_dev *dev = sdio_get_drvdata(func); 201 struct mt76_connac_pm *pm = &dev->pm; 202 struct mt76_dev *mdev = &dev->mt76; 203 int err; 204 205 pm->suspended = true; 206 set_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 207 208 cancel_delayed_work_sync(&pm->ps_work); 209 cancel_work_sync(&pm->wake_work); 210 211 err = mt7921_mcu_drv_pmctrl(dev); 212 if (err < 0) 213 goto restore_suspend; 214 215 /* always enable deep sleep during suspend to reduce 216 * power consumption 217 */ 218 mt76_connac_mcu_set_deep_sleep(mdev, true); 219 220 mt76_txq_schedule_all(&dev->mphy); 221 mt76_worker_disable(&mdev->tx_worker); 222 mt76_worker_disable(&mdev->sdio.status_worker); 223 cancel_work_sync(&mdev->sdio.stat_work); 224 clear_bit(MT76_READING_STATS, &dev->mphy.state); 225 mt76_tx_status_check(mdev, true); 226 227 mt76_worker_schedule(&mdev->sdio.txrx_worker); 228 wait_event_timeout(dev->mt76.sdio.wait, 229 mt76s_txqs_empty(&dev->mt76), 5 * HZ); 230 231 /* It is supposed that SDIO bus is idle at the point */ 232 err = mt76_connac_mcu_set_hif_suspend(mdev, true); 233 if (err) 234 goto restore_worker; 235 236 mt76_worker_disable(&mdev->sdio.txrx_worker); 237 mt76_worker_disable(&mdev->sdio.net_worker); 238 239 err = mt7921_mcu_fw_pmctrl(dev); 240 if (err) 241 goto restore_txrx_worker; 242 243 sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 244 245 return 0; 246 247 restore_txrx_worker: 248 mt76_worker_enable(&mdev->sdio.net_worker); 249 mt76_worker_enable(&mdev->sdio.txrx_worker); 250 mt76_connac_mcu_set_hif_suspend(mdev, false); 251 252 restore_worker: 253 mt76_worker_enable(&mdev->tx_worker); 254 mt76_worker_enable(&mdev->sdio.status_worker); 255 256 if (!pm->ds_enable) 257 mt76_connac_mcu_set_deep_sleep(mdev, false); 258 259 restore_suspend: 260 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 261 pm->suspended = false; 262 263 return err; 264 } 265 266 static int mt7921s_resume(struct device *__dev) 267 { 268 struct sdio_func *func = dev_to_sdio_func(__dev); 269 struct mt7921_dev *dev = sdio_get_drvdata(func); 270 struct mt76_connac_pm *pm = &dev->pm; 271 struct mt76_dev *mdev = &dev->mt76; 272 int err; 273 274 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 275 276 err = mt7921_mcu_drv_pmctrl(dev); 277 if (err < 0) 278 return err; 279 280 mt76_worker_enable(&mdev->tx_worker); 281 mt76_worker_enable(&mdev->sdio.txrx_worker); 282 mt76_worker_enable(&mdev->sdio.status_worker); 283 mt76_worker_enable(&mdev->sdio.net_worker); 284 285 /* restore previous ds setting */ 286 if (!pm->ds_enable) 287 mt76_connac_mcu_set_deep_sleep(mdev, false); 288 289 err = mt76_connac_mcu_set_hif_suspend(mdev, false); 290 if (err) 291 return err; 292 293 pm->suspended = false; 294 295 return err; 296 } 297 298 static const struct dev_pm_ops mt7921s_pm_ops = { 299 .suspend = mt7921s_suspend, 300 .resume = mt7921s_resume, 301 }; 302 #endif 303 304 MODULE_DEVICE_TABLE(sdio, mt7921s_table); 305 MODULE_FIRMWARE(MT7921_FIRMWARE_WM); 306 MODULE_FIRMWARE(MT7921_ROM_PATCH); 307 308 static struct sdio_driver mt7921s_driver = { 309 .name = KBUILD_MODNAME, 310 .probe = mt7921s_probe, 311 .remove = mt7921s_remove, 312 .id_table = mt7921s_table, 313 #ifdef CONFIG_PM 314 .drv = { 315 .pm = &mt7921s_pm_ops, 316 } 317 #endif 318 }; 319 module_sdio_driver(mt7921s_driver); 320 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); 321 MODULE_LICENSE("Dual BSD/GPL"); 322