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 cancel_work_sync(&dev->init_work); 45 mt76_unregister_device(&dev->mt76); 46 cancel_delayed_work_sync(&pm->ps_work); 47 cancel_work_sync(&pm->wake_work); 48 49 mt76s_deinit(&dev->mt76); 50 mt7921s_wfsys_reset(dev); 51 skb_queue_purge(&dev->mt76.mcu.res_q); 52 53 mt76_free_device(&dev->mt76); 54 } 55 56 static int mt7921s_parse_intr(struct mt76_dev *dev, struct mt76s_intr *intr) 57 { 58 struct mt76_sdio *sdio = &dev->sdio; 59 struct mt7921_sdio_intr *irq_data = sdio->intr_data; 60 int i, err; 61 62 sdio_claim_host(sdio->func); 63 err = sdio_readsb(sdio->func, irq_data, MCR_WHISR, sizeof(*irq_data)); 64 sdio_release_host(sdio->func); 65 66 if (err < 0) 67 return err; 68 69 if (irq_data->rx.num[0] > 16 || 70 irq_data->rx.num[1] > 128) 71 return -EINVAL; 72 73 intr->isr = irq_data->isr; 74 intr->rec_mb = irq_data->rec_mb; 75 intr->tx.wtqcr = irq_data->tx.wtqcr; 76 intr->rx.num = irq_data->rx.num; 77 for (i = 0; i < 2 ; i++) { 78 if (!i) 79 intr->rx.len[0] = irq_data->rx.len0; 80 else 81 intr->rx.len[1] = irq_data->rx.len1; 82 } 83 84 return 0; 85 } 86 87 static int mt7921s_probe(struct sdio_func *func, 88 const struct sdio_device_id *id) 89 { 90 static const struct mt76_driver_ops drv_ops = { 91 .txwi_size = MT_SDIO_TXD_SIZE, 92 .survey_flags = SURVEY_INFO_TIME_TX | 93 SURVEY_INFO_TIME_RX | 94 SURVEY_INFO_TIME_BSS_RX, 95 .tx_prepare_skb = mt7921_usb_sdio_tx_prepare_skb, 96 .tx_complete_skb = mt7921_usb_sdio_tx_complete_skb, 97 .tx_status_data = mt7921_usb_sdio_tx_status_data, 98 .rx_skb = mt7921_queue_rx_skb, 99 .rx_check = mt7921_rx_check, 100 .sta_ps = mt7921_sta_ps, 101 .sta_add = mt7921_mac_sta_add, 102 .sta_assoc = mt7921_mac_sta_assoc, 103 .sta_remove = mt7921_mac_sta_remove, 104 .update_survey = mt7921_update_channel, 105 }; 106 static const struct mt76_bus_ops mt7921s_ops = { 107 .rr = mt76s_rr, 108 .rmw = mt76s_rmw, 109 .wr = mt76s_wr, 110 .write_copy = mt76s_write_copy, 111 .read_copy = mt76s_read_copy, 112 .wr_rp = mt76s_wr_rp, 113 .rd_rp = mt76s_rd_rp, 114 .type = MT76_BUS_SDIO, 115 }; 116 static const struct mt7921_hif_ops mt7921_sdio_ops = { 117 .init_reset = mt7921s_init_reset, 118 .reset = mt7921s_mac_reset, 119 .mcu_init = mt7921s_mcu_init, 120 .drv_own = mt7921s_mcu_drv_pmctrl, 121 .fw_own = mt7921s_mcu_fw_pmctrl, 122 }; 123 124 struct mt7921_dev *dev; 125 struct mt76_dev *mdev; 126 int ret; 127 128 mdev = mt76_alloc_device(&func->dev, sizeof(*dev), &mt7921_ops, 129 &drv_ops); 130 if (!mdev) 131 return -ENOMEM; 132 133 dev = container_of(mdev, struct mt7921_dev, mt76); 134 dev->hif_ops = &mt7921_sdio_ops; 135 136 sdio_set_drvdata(func, dev); 137 138 ret = mt76s_init(mdev, func, &mt7921s_ops); 139 if (ret < 0) 140 goto error; 141 142 ret = mt76s_hw_init(mdev, func, MT76_CONNAC2_SDIO); 143 if (ret) 144 goto error; 145 146 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 147 (mt76_rr(dev, MT_HW_REV) & 0xff); 148 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 149 150 mdev->sdio.parse_irq = mt7921s_parse_intr; 151 mdev->sdio.intr_data = devm_kmalloc(mdev->dev, 152 sizeof(struct mt7921_sdio_intr), 153 GFP_KERNEL); 154 if (!mdev->sdio.intr_data) { 155 ret = -ENOMEM; 156 goto error; 157 } 158 159 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN); 160 if (ret) 161 goto error; 162 163 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MCU); 164 if (ret) 165 goto error; 166 167 ret = mt76s_alloc_tx(mdev); 168 if (ret) 169 goto error; 170 171 ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker, 172 mt7921s_txrx_worker, "sdio-txrx"); 173 if (ret) 174 goto error; 175 176 sched_set_fifo_low(mdev->sdio.txrx_worker.task); 177 178 ret = mt7921_register_device(dev); 179 if (ret) 180 goto error; 181 182 return 0; 183 184 error: 185 mt76s_deinit(&dev->mt76); 186 mt76_free_device(&dev->mt76); 187 188 return ret; 189 } 190 191 static void mt7921s_remove(struct sdio_func *func) 192 { 193 struct mt7921_dev *dev = sdio_get_drvdata(func); 194 195 mt7921s_unregister_device(dev); 196 } 197 198 static int mt7921s_suspend(struct device *__dev) 199 { 200 struct sdio_func *func = dev_to_sdio_func(__dev); 201 struct mt7921_dev *dev = sdio_get_drvdata(func); 202 struct mt76_connac_pm *pm = &dev->pm; 203 struct mt76_dev *mdev = &dev->mt76; 204 int err; 205 206 pm->suspended = true; 207 set_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 208 209 flush_work(&dev->reset_work); 210 cancel_delayed_work_sync(&pm->ps_work); 211 cancel_work_sync(&pm->wake_work); 212 213 err = mt7921_mcu_drv_pmctrl(dev); 214 if (err < 0) 215 goto restore_suspend; 216 217 /* always enable deep sleep during suspend to reduce 218 * power consumption 219 */ 220 mt76_connac_mcu_set_deep_sleep(mdev, true); 221 222 mt76_txq_schedule_all(&dev->mphy); 223 mt76_worker_disable(&mdev->tx_worker); 224 mt76_worker_disable(&mdev->sdio.status_worker); 225 cancel_work_sync(&mdev->sdio.stat_work); 226 clear_bit(MT76_READING_STATS, &dev->mphy.state); 227 mt76_tx_status_check(mdev, true); 228 229 mt76_worker_schedule(&mdev->sdio.txrx_worker); 230 wait_event_timeout(dev->mt76.sdio.wait, 231 mt76s_txqs_empty(&dev->mt76), 5 * HZ); 232 233 /* It is supposed that SDIO bus is idle at the point */ 234 err = mt76_connac_mcu_set_hif_suspend(mdev, true); 235 if (err) 236 goto restore_worker; 237 238 mt76_worker_disable(&mdev->sdio.txrx_worker); 239 mt76_worker_disable(&mdev->sdio.net_worker); 240 241 err = mt7921_mcu_fw_pmctrl(dev); 242 if (err) 243 goto restore_txrx_worker; 244 245 sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 246 247 return 0; 248 249 restore_txrx_worker: 250 mt76_worker_enable(&mdev->sdio.net_worker); 251 mt76_worker_enable(&mdev->sdio.txrx_worker); 252 mt76_connac_mcu_set_hif_suspend(mdev, false); 253 254 restore_worker: 255 mt76_worker_enable(&mdev->tx_worker); 256 mt76_worker_enable(&mdev->sdio.status_worker); 257 258 if (!pm->ds_enable) 259 mt76_connac_mcu_set_deep_sleep(mdev, false); 260 261 restore_suspend: 262 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 263 pm->suspended = false; 264 265 if (err < 0) 266 mt7921_reset(&dev->mt76); 267 268 return err; 269 } 270 271 static int mt7921s_resume(struct device *__dev) 272 { 273 struct sdio_func *func = dev_to_sdio_func(__dev); 274 struct mt7921_dev *dev = sdio_get_drvdata(func); 275 struct mt76_connac_pm *pm = &dev->pm; 276 struct mt76_dev *mdev = &dev->mt76; 277 int err; 278 279 clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); 280 281 err = mt7921_mcu_drv_pmctrl(dev); 282 if (err < 0) 283 goto failed; 284 285 mt76_worker_enable(&mdev->tx_worker); 286 mt76_worker_enable(&mdev->sdio.txrx_worker); 287 mt76_worker_enable(&mdev->sdio.status_worker); 288 mt76_worker_enable(&mdev->sdio.net_worker); 289 290 /* restore previous ds setting */ 291 if (!pm->ds_enable) 292 mt76_connac_mcu_set_deep_sleep(mdev, false); 293 294 err = mt76_connac_mcu_set_hif_suspend(mdev, false); 295 failed: 296 pm->suspended = false; 297 298 if (err < 0) 299 mt7921_reset(&dev->mt76); 300 301 return err; 302 } 303 304 MODULE_DEVICE_TABLE(sdio, mt7921s_table); 305 MODULE_FIRMWARE(MT7921_FIRMWARE_WM); 306 MODULE_FIRMWARE(MT7921_ROM_PATCH); 307 308 static DEFINE_SIMPLE_DEV_PM_OPS(mt7921s_pm_ops, mt7921s_suspend, mt7921s_resume); 309 310 static struct sdio_driver mt7921s_driver = { 311 .name = KBUILD_MODNAME, 312 .probe = mt7921s_probe, 313 .remove = mt7921s_remove, 314 .id_table = mt7921s_table, 315 .drv.pm = pm_sleep_ptr(&mt7921s_pm_ops), 316 }; 317 module_sdio_driver(mt7921s_driver); 318 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); 319 MODULE_LICENSE("Dual BSD/GPL"); 320