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 err = sdio_readsb(sdio->func, irq_data, MCR_WHISR, sizeof(*irq_data)); 62 if (err < 0) 63 return err; 64 65 if (irq_data->rx.num[0] > 16 || 66 irq_data->rx.num[1] > 128) 67 return -EINVAL; 68 69 intr->isr = irq_data->isr; 70 intr->rec_mb = irq_data->rec_mb; 71 intr->tx.wtqcr = irq_data->tx.wtqcr; 72 intr->rx.num = irq_data->rx.num; 73 for (i = 0; i < 2 ; i++) { 74 if (!i) 75 intr->rx.len[0] = irq_data->rx.len0; 76 else 77 intr->rx.len[1] = irq_data->rx.len1; 78 } 79 80 return 0; 81 } 82 83 static int mt7921s_probe(struct sdio_func *func, 84 const struct sdio_device_id *id) 85 { 86 static const struct mt76_driver_ops drv_ops = { 87 .txwi_size = MT_SDIO_TXD_SIZE, 88 .survey_flags = SURVEY_INFO_TIME_TX | 89 SURVEY_INFO_TIME_RX | 90 SURVEY_INFO_TIME_BSS_RX, 91 .tx_prepare_skb = mt7921s_tx_prepare_skb, 92 .tx_complete_skb = mt7921s_tx_complete_skb, 93 .tx_status_data = mt7921s_tx_status_data, 94 .rx_skb = mt7921_queue_rx_skb, 95 .sta_ps = mt7921_sta_ps, 96 .sta_add = mt7921_mac_sta_add, 97 .sta_assoc = mt7921_mac_sta_assoc, 98 .sta_remove = mt7921_mac_sta_remove, 99 .update_survey = mt7921_update_channel, 100 }; 101 static const struct mt76_bus_ops mt7921s_ops = { 102 .rr = mt76s_rr, 103 .rmw = mt76s_rmw, 104 .wr = mt76s_wr, 105 .write_copy = mt76s_write_copy, 106 .read_copy = mt76s_read_copy, 107 .wr_rp = mt76s_wr_rp, 108 .rd_rp = mt76s_rd_rp, 109 .type = MT76_BUS_SDIO, 110 }; 111 static const struct mt7921_hif_ops mt7921_sdio_ops = { 112 .init_reset = mt7921s_init_reset, 113 .reset = mt7921s_mac_reset, 114 .mcu_init = mt7921s_mcu_init, 115 .drv_own = mt7921s_mcu_drv_pmctrl, 116 .fw_own = mt7921s_mcu_fw_pmctrl, 117 }; 118 119 struct mt7921_dev *dev; 120 struct mt76_dev *mdev; 121 int ret, i; 122 123 mdev = mt76_alloc_device(&func->dev, sizeof(*dev), &mt7921_ops, 124 &drv_ops); 125 if (!mdev) 126 return -ENOMEM; 127 128 dev = container_of(mdev, struct mt7921_dev, mt76); 129 dev->hif_ops = &mt7921_sdio_ops; 130 131 sdio_set_drvdata(func, dev); 132 133 ret = mt76s_init(mdev, func, &mt7921s_ops); 134 if (ret < 0) 135 goto error; 136 137 ret = mt76s_hw_init(mdev, func, MT76_CONNAC2_SDIO); 138 if (ret) 139 goto error; 140 141 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 142 (mt76_rr(dev, MT_HW_REV) & 0xff); 143 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 144 145 mdev->sdio.parse_irq = mt7921s_parse_intr; 146 mdev->sdio.intr_data = devm_kmalloc(mdev->dev, 147 sizeof(struct mt7921_sdio_intr), 148 GFP_KERNEL); 149 if (!mdev->sdio.intr_data) { 150 ret = -ENOMEM; 151 goto error; 152 } 153 154 for (i = 0; i < ARRAY_SIZE(mdev->sdio.xmit_buf); i++) { 155 mdev->sdio.xmit_buf[i] = devm_kmalloc(mdev->dev, 156 MT76S_XMIT_BUF_SZ, 157 GFP_KERNEL); 158 if (!mdev->sdio.xmit_buf[i]) { 159 ret = -ENOMEM; 160 goto error; 161 } 162 } 163 164 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN); 165 if (ret) 166 goto error; 167 168 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MCU); 169 if (ret) 170 goto error; 171 172 ret = mt76s_alloc_tx(mdev); 173 if (ret) 174 goto error; 175 176 ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker, 177 mt7921s_txrx_worker, "sdio-txrx"); 178 if (ret) 179 goto error; 180 181 sched_set_fifo_low(mdev->sdio.txrx_worker.task); 182 183 ret = mt7921_register_device(dev); 184 if (ret) 185 goto error; 186 187 return 0; 188 189 error: 190 mt76s_deinit(&dev->mt76); 191 mt76_free_device(&dev->mt76); 192 193 return ret; 194 } 195 196 static void mt7921s_remove(struct sdio_func *func) 197 { 198 struct mt7921_dev *dev = sdio_get_drvdata(func); 199 200 mt7921s_unregister_device(dev); 201 } 202 203 #ifdef CONFIG_PM 204 static int mt7921s_suspend(struct device *__dev) 205 { 206 struct sdio_func *func = dev_to_sdio_func(__dev); 207 struct mt7921_dev *dev = sdio_get_drvdata(func); 208 struct mt76_connac_pm *pm = &dev->pm; 209 struct mt76_dev *mdev = &dev->mt76; 210 int err; 211 212 pm->suspended = true; 213 set_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 214 215 cancel_delayed_work_sync(&pm->ps_work); 216 cancel_work_sync(&pm->wake_work); 217 218 err = mt7921_mcu_drv_pmctrl(dev); 219 if (err < 0) 220 goto restore_suspend; 221 222 /* always enable deep sleep during suspend to reduce 223 * power consumption 224 */ 225 mt76_connac_mcu_set_deep_sleep(mdev, true); 226 227 mt76_txq_schedule_all(&dev->mphy); 228 mt76_worker_disable(&mdev->tx_worker); 229 mt76_worker_disable(&mdev->sdio.status_worker); 230 cancel_work_sync(&mdev->sdio.stat_work); 231 clear_bit(MT76_READING_STATS, &dev->mphy.state); 232 mt76_tx_status_check(mdev, true); 233 234 mt76_worker_schedule(&mdev->sdio.txrx_worker); 235 wait_event_timeout(dev->mt76.sdio.wait, 236 mt76s_txqs_empty(&dev->mt76), 5 * HZ); 237 238 /* It is supposed that SDIO bus is idle at the point */ 239 err = mt76_connac_mcu_set_hif_suspend(mdev, true); 240 if (err) 241 goto restore_worker; 242 243 mt76_worker_disable(&mdev->sdio.txrx_worker); 244 mt76_worker_disable(&mdev->sdio.net_worker); 245 246 err = mt7921_mcu_fw_pmctrl(dev); 247 if (err) 248 goto restore_txrx_worker; 249 250 sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 251 252 return 0; 253 254 restore_txrx_worker: 255 mt76_worker_enable(&mdev->sdio.net_worker); 256 mt76_worker_enable(&mdev->sdio.txrx_worker); 257 mt76_connac_mcu_set_hif_suspend(mdev, false); 258 259 restore_worker: 260 mt76_worker_enable(&mdev->tx_worker); 261 mt76_worker_enable(&mdev->sdio.status_worker); 262 263 if (!pm->ds_enable) 264 mt76_connac_mcu_set_deep_sleep(mdev, false); 265 266 restore_suspend: 267 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 268 pm->suspended = false; 269 270 return err; 271 } 272 273 static int mt7921s_resume(struct device *__dev) 274 { 275 struct sdio_func *func = dev_to_sdio_func(__dev); 276 struct mt7921_dev *dev = sdio_get_drvdata(func); 277 struct mt76_connac_pm *pm = &dev->pm; 278 struct mt76_dev *mdev = &dev->mt76; 279 int err; 280 281 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 282 283 err = mt7921_mcu_drv_pmctrl(dev); 284 if (err < 0) 285 return err; 286 287 mt76_worker_enable(&mdev->tx_worker); 288 mt76_worker_enable(&mdev->sdio.txrx_worker); 289 mt76_worker_enable(&mdev->sdio.status_worker); 290 mt76_worker_enable(&mdev->sdio.net_worker); 291 292 /* restore previous ds setting */ 293 if (!pm->ds_enable) 294 mt76_connac_mcu_set_deep_sleep(mdev, false); 295 296 err = mt76_connac_mcu_set_hif_suspend(mdev, false); 297 if (err) 298 return err; 299 300 pm->suspended = false; 301 302 return err; 303 } 304 305 static const struct dev_pm_ops mt7921s_pm_ops = { 306 .suspend = mt7921s_suspend, 307 .resume = mt7921s_resume, 308 }; 309 #endif 310 311 MODULE_DEVICE_TABLE(sdio, mt7921s_table); 312 MODULE_FIRMWARE(MT7921_FIRMWARE_WM); 313 MODULE_FIRMWARE(MT7921_ROM_PATCH); 314 315 static struct sdio_driver mt7921s_driver = { 316 .name = KBUILD_MODNAME, 317 .probe = mt7921s_probe, 318 .remove = mt7921s_remove, 319 .id_table = mt7921s_table, 320 #ifdef CONFIG_PM 321 .drv = { 322 .pm = &mt7921s_pm_ops, 323 } 324 #endif 325 }; 326 module_sdio_driver(mt7921s_driver); 327 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); 328 MODULE_LICENSE("Dual BSD/GPL"); 329