developer | 0f312e8 | 2022-11-01 12:31:52 +0800 | [diff] [blame] | 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 | .drv_flags = MT_DRV_AMSDU_OFFLOAD, |
| 93 | .survey_flags = SURVEY_INFO_TIME_TX | |
| 94 | SURVEY_INFO_TIME_RX | |
| 95 | SURVEY_INFO_TIME_BSS_RX, |
| 96 | .tx_prepare_skb = mt7921_usb_sdio_tx_prepare_skb, |
| 97 | .tx_complete_skb = mt7921_usb_sdio_tx_complete_skb, |
| 98 | .tx_status_data = mt7921_usb_sdio_tx_status_data, |
| 99 | .rx_skb = mt7921_queue_rx_skb, |
| 100 | .rx_check = mt7921_rx_check, |
| 101 | .sta_ps = mt7921_sta_ps, |
| 102 | .sta_add = mt7921_mac_sta_add, |
| 103 | .sta_assoc = mt7921_mac_sta_assoc, |
| 104 | .sta_remove = mt7921_mac_sta_remove, |
| 105 | .update_survey = mt7921_update_channel, |
| 106 | }; |
| 107 | static const struct mt76_bus_ops mt7921s_ops = { |
| 108 | .rr = mt76s_rr, |
| 109 | .rmw = mt76s_rmw, |
| 110 | .wr = mt76s_wr, |
| 111 | .write_copy = mt76s_write_copy, |
| 112 | .read_copy = mt76s_read_copy, |
| 113 | .wr_rp = mt76s_wr_rp, |
| 114 | .rd_rp = mt76s_rd_rp, |
| 115 | .type = MT76_BUS_SDIO, |
| 116 | }; |
| 117 | static const struct mt7921_hif_ops mt7921_sdio_ops = { |
| 118 | .init_reset = mt7921s_init_reset, |
| 119 | .reset = mt7921s_mac_reset, |
| 120 | .mcu_init = mt7921s_mcu_init, |
| 121 | .drv_own = mt7921s_mcu_drv_pmctrl, |
| 122 | .fw_own = mt7921s_mcu_fw_pmctrl, |
| 123 | }; |
| 124 | |
| 125 | struct mt7921_dev *dev; |
| 126 | struct mt76_dev *mdev; |
| 127 | int ret; |
| 128 | |
| 129 | mdev = mt76_alloc_device(&func->dev, sizeof(*dev), &mt7921_ops, |
| 130 | &drv_ops); |
| 131 | if (!mdev) |
| 132 | return -ENOMEM; |
| 133 | |
| 134 | dev = container_of(mdev, struct mt7921_dev, mt76); |
| 135 | dev->hif_ops = &mt7921_sdio_ops; |
| 136 | |
| 137 | sdio_set_drvdata(func, dev); |
| 138 | |
| 139 | ret = mt76s_init(mdev, func, &mt7921s_ops); |
| 140 | if (ret < 0) |
| 141 | goto error; |
| 142 | |
| 143 | ret = mt76s_hw_init(mdev, func, MT76_CONNAC2_SDIO); |
| 144 | if (ret) |
| 145 | goto error; |
| 146 | |
| 147 | mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | |
| 148 | (mt76_rr(dev, MT_HW_REV) & 0xff); |
| 149 | dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); |
| 150 | |
| 151 | mdev->sdio.parse_irq = mt7921s_parse_intr; |
| 152 | mdev->sdio.intr_data = devm_kmalloc(mdev->dev, |
| 153 | sizeof(struct mt7921_sdio_intr), |
| 154 | GFP_KERNEL); |
| 155 | if (!mdev->sdio.intr_data) { |
| 156 | ret = -ENOMEM; |
| 157 | goto error; |
| 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 | int err; |
| 207 | |
| 208 | pm->suspended = true; |
| 209 | set_bit(MT76_STATE_SUSPEND, &mdev->phy.state); |
| 210 | |
| 211 | flush_work(&dev->reset_work); |
| 212 | cancel_delayed_work_sync(&pm->ps_work); |
| 213 | cancel_work_sync(&pm->wake_work); |
| 214 | |
| 215 | err = mt7921_mcu_drv_pmctrl(dev); |
| 216 | if (err < 0) |
| 217 | goto restore_suspend; |
| 218 | |
| 219 | /* always enable deep sleep during suspend to reduce |
| 220 | * power consumption |
| 221 | */ |
| 222 | mt76_connac_mcu_set_deep_sleep(mdev, true); |
| 223 | |
| 224 | mt76_txq_schedule_all(&dev->mphy); |
| 225 | mt76_worker_disable(&mdev->tx_worker); |
| 226 | mt76_worker_disable(&mdev->sdio.status_worker); |
| 227 | cancel_work_sync(&mdev->sdio.stat_work); |
| 228 | clear_bit(MT76_READING_STATS, &dev->mphy.state); |
| 229 | mt76_tx_status_check(mdev, true); |
| 230 | |
| 231 | mt76_worker_schedule(&mdev->sdio.txrx_worker); |
| 232 | wait_event_timeout(dev->mt76.sdio.wait, |
| 233 | mt76s_txqs_empty(&dev->mt76), 5 * HZ); |
| 234 | |
| 235 | /* It is supposed that SDIO bus is idle at the point */ |
| 236 | err = mt76_connac_mcu_set_hif_suspend(mdev, true); |
| 237 | if (err) |
| 238 | goto restore_worker; |
| 239 | |
| 240 | mt76_worker_disable(&mdev->sdio.txrx_worker); |
| 241 | mt76_worker_disable(&mdev->sdio.net_worker); |
| 242 | |
| 243 | err = mt7921_mcu_fw_pmctrl(dev); |
| 244 | if (err) |
| 245 | goto restore_txrx_worker; |
| 246 | |
| 247 | sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); |
| 248 | |
| 249 | return 0; |
| 250 | |
| 251 | restore_txrx_worker: |
| 252 | mt76_worker_enable(&mdev->sdio.net_worker); |
| 253 | mt76_worker_enable(&mdev->sdio.txrx_worker); |
| 254 | mt76_connac_mcu_set_hif_suspend(mdev, false); |
| 255 | |
| 256 | restore_worker: |
| 257 | mt76_worker_enable(&mdev->tx_worker); |
| 258 | mt76_worker_enable(&mdev->sdio.status_worker); |
| 259 | |
| 260 | if (!pm->ds_enable) |
| 261 | mt76_connac_mcu_set_deep_sleep(mdev, false); |
| 262 | |
| 263 | restore_suspend: |
| 264 | clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state); |
| 265 | pm->suspended = false; |
| 266 | |
| 267 | if (err < 0) |
| 268 | mt7921_reset(&dev->mt76); |
| 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 | goto failed; |
| 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 | failed: |
| 298 | pm->suspended = false; |
| 299 | |
| 300 | if (err < 0) |
| 301 | mt7921_reset(&dev->mt76); |
| 302 | |
| 303 | return err; |
| 304 | } |
| 305 | |
| 306 | static const struct dev_pm_ops mt7921s_pm_ops = { |
| 307 | .suspend = mt7921s_suspend, |
| 308 | .resume = mt7921s_resume, |
| 309 | }; |
| 310 | #endif |
| 311 | |
| 312 | MODULE_DEVICE_TABLE(sdio, mt7921s_table); |
| 313 | MODULE_FIRMWARE(MT7921_FIRMWARE_WM); |
| 314 | MODULE_FIRMWARE(MT7921_ROM_PATCH); |
| 315 | |
| 316 | static struct sdio_driver mt7921s_driver = { |
| 317 | .name = KBUILD_MODNAME, |
| 318 | .probe = mt7921s_probe, |
| 319 | .remove = mt7921s_remove, |
| 320 | .id_table = mt7921s_table, |
| 321 | #ifdef CONFIG_PM |
| 322 | .drv = { |
| 323 | .pm = &mt7921s_pm_ops, |
| 324 | } |
| 325 | #endif |
| 326 | }; |
| 327 | module_sdio_driver(mt7921s_driver); |
| 328 | MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); |
| 329 | MODULE_LICENSE("Dual BSD/GPL"); |