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