1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2020 MediaTek Inc. 3 * 4 * Author: Felix Fietkau <nbd@nbd.name> 5 * Lorenzo Bianconi <lorenzo@kernel.org> 6 * Sean Wang <sean.wang@mediatek.com> 7 */ 8 9 #include <linux/kernel.h> 10 #include <linux/iopoll.h> 11 #include <linux/module.h> 12 13 #include <linux/mmc/host.h> 14 #include <linux/mmc/sdio_ids.h> 15 #include <linux/mmc/sdio_func.h> 16 17 #include "../sdio.h" 18 #include "mt7615.h" 19 #include "mac.h" 20 #include "mcu.h" 21 22 static const struct sdio_device_id mt7663s_table[] = { 23 { SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, 0x7603) }, 24 { } /* Terminating entry */ 25 }; 26 27 static void mt7663s_txrx_worker(struct mt76_worker *w) 28 { 29 struct mt76_sdio *sdio = container_of(w, struct mt76_sdio, 30 txrx_worker); 31 struct mt76_dev *mdev = container_of(sdio, struct mt76_dev, sdio); 32 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); 33 34 if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) { 35 queue_work(mdev->wq, &dev->pm.wake_work); 36 return; 37 } 38 mt76s_txrx_worker(sdio); 39 mt76_connac_pm_unref(&dev->mphy, &dev->pm); 40 } 41 42 static void mt7663s_init_work(struct work_struct *work) 43 { 44 struct mt7615_dev *dev; 45 46 dev = container_of(work, struct mt7615_dev, mcu_work); 47 if (mt7663s_mcu_init(dev)) 48 return; 49 50 mt7615_init_work(dev); 51 } 52 53 static int mt7663s_parse_intr(struct mt76_dev *dev, struct mt76s_intr *intr) 54 { 55 struct mt76_sdio *sdio = &dev->sdio; 56 struct mt7663s_intr *irq_data = sdio->intr_data; 57 int i, err; 58 59 sdio_claim_host(sdio->func); 60 err = sdio_readsb(sdio->func, irq_data, MCR_WHISR, sizeof(*irq_data)); 61 sdio_release_host(sdio->func); 62 63 if (err) 64 return err; 65 66 intr->isr = irq_data->isr; 67 intr->rec_mb = irq_data->rec_mb; 68 intr->tx.wtqcr = irq_data->tx.wtqcr; 69 intr->rx.num = irq_data->rx.num; 70 for (i = 0; i < 2 ; i++) 71 intr->rx.len[i] = irq_data->rx.len[i]; 72 73 return 0; 74 } 75 76 static int mt7663s_probe(struct sdio_func *func, 77 const struct sdio_device_id *id) 78 { 79 static const struct mt76_driver_ops drv_ops = { 80 .txwi_size = MT_USB_TXD_SIZE, 81 .drv_flags = MT_DRV_RX_DMA_HDR, 82 .tx_prepare_skb = mt7663_usb_sdio_tx_prepare_skb, 83 .tx_complete_skb = mt7663_usb_sdio_tx_complete_skb, 84 .tx_status_data = mt7663_usb_sdio_tx_status_data, 85 .rx_skb = mt7615_queue_rx_skb, 86 .rx_check = mt7615_rx_check, 87 .sta_ps = mt7615_sta_ps, 88 .sta_add = mt7615_mac_sta_add, 89 .sta_remove = mt7615_mac_sta_remove, 90 .update_survey = mt7615_update_channel, 91 }; 92 static const struct mt76_bus_ops mt7663s_ops = { 93 .rr = mt76s_rr, 94 .rmw = mt76s_rmw, 95 .wr = mt76s_wr, 96 .write_copy = mt76s_write_copy, 97 .read_copy = mt76s_read_copy, 98 .wr_rp = mt76s_wr_rp, 99 .rd_rp = mt76s_rd_rp, 100 .type = MT76_BUS_SDIO, 101 }; 102 struct ieee80211_ops *ops; 103 struct mt7615_dev *dev; 104 struct mt76_dev *mdev; 105 int ret; 106 107 ops = devm_kmemdup(&func->dev, &mt7615_ops, sizeof(mt7615_ops), 108 GFP_KERNEL); 109 if (!ops) 110 return -ENOMEM; 111 112 mdev = mt76_alloc_device(&func->dev, sizeof(*dev), ops, &drv_ops); 113 if (!mdev) 114 return -ENOMEM; 115 116 dev = container_of(mdev, struct mt7615_dev, mt76); 117 118 INIT_WORK(&dev->mcu_work, mt7663s_init_work); 119 dev->reg_map = mt7663_usb_sdio_reg_map; 120 dev->ops = ops; 121 sdio_set_drvdata(func, dev); 122 123 ret = mt76s_init(mdev, func, &mt7663s_ops); 124 if (ret < 0) 125 goto error; 126 127 ret = mt76s_hw_init(mdev, func, MT76_CONNAC_SDIO); 128 if (ret) 129 goto error; 130 131 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 132 (mt76_rr(dev, MT_HW_REV) & 0xff); 133 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 134 135 mdev->sdio.parse_irq = mt7663s_parse_intr; 136 mdev->sdio.intr_data = devm_kmalloc(mdev->dev, 137 sizeof(struct mt7663s_intr), 138 GFP_KERNEL); 139 if (!mdev->sdio.intr_data) { 140 ret = -ENOMEM; 141 goto error; 142 } 143 144 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN); 145 if (ret) 146 goto error; 147 148 ret = mt76s_alloc_tx(mdev); 149 if (ret) 150 goto error; 151 152 ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker, 153 mt7663s_txrx_worker, "sdio-txrx"); 154 if (ret) 155 goto error; 156 157 sched_set_fifo_low(mdev->sdio.txrx_worker.task); 158 159 ret = mt7663_usb_sdio_register_device(dev); 160 if (ret) 161 goto error; 162 163 return 0; 164 165 error: 166 mt76s_deinit(&dev->mt76); 167 mt76_free_device(&dev->mt76); 168 169 return ret; 170 } 171 172 static void mt7663s_remove(struct sdio_func *func) 173 { 174 struct mt7615_dev *dev = sdio_get_drvdata(func); 175 176 if (!test_and_clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state)) 177 return; 178 179 ieee80211_unregister_hw(dev->mt76.hw); 180 mt76s_deinit(&dev->mt76); 181 mt76_free_device(&dev->mt76); 182 } 183 184 static int mt7663s_suspend(struct device *dev) 185 { 186 struct sdio_func *func = dev_to_sdio_func(dev); 187 struct mt7615_dev *mdev = sdio_get_drvdata(func); 188 int err; 189 190 if (!test_bit(MT76_STATE_SUSPEND, &mdev->mphy.state) && 191 mt7615_firmware_offload(mdev)) { 192 int err; 193 194 err = mt76_connac_mcu_set_hif_suspend(&mdev->mt76, true); 195 if (err < 0) 196 return err; 197 } 198 199 sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 200 201 err = mt7615_mcu_set_fw_ctrl(mdev); 202 if (err) 203 return err; 204 205 mt76_worker_disable(&mdev->mt76.sdio.txrx_worker); 206 mt76_worker_disable(&mdev->mt76.sdio.status_worker); 207 mt76_worker_disable(&mdev->mt76.sdio.net_worker); 208 209 cancel_work_sync(&mdev->mt76.sdio.stat_work); 210 clear_bit(MT76_READING_STATS, &mdev->mphy.state); 211 212 mt76_tx_status_check(&mdev->mt76, true); 213 214 return 0; 215 } 216 217 static int mt7663s_resume(struct device *dev) 218 { 219 struct sdio_func *func = dev_to_sdio_func(dev); 220 struct mt7615_dev *mdev = sdio_get_drvdata(func); 221 int err; 222 223 mt76_worker_enable(&mdev->mt76.sdio.txrx_worker); 224 mt76_worker_enable(&mdev->mt76.sdio.status_worker); 225 mt76_worker_enable(&mdev->mt76.sdio.net_worker); 226 227 err = mt7615_mcu_set_drv_ctrl(mdev); 228 if (err) 229 return err; 230 231 if (!test_bit(MT76_STATE_SUSPEND, &mdev->mphy.state) && 232 mt7615_firmware_offload(mdev)) 233 err = mt76_connac_mcu_set_hif_suspend(&mdev->mt76, false); 234 235 return err; 236 } 237 238 MODULE_DEVICE_TABLE(sdio, mt7663s_table); 239 MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9); 240 MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH); 241 MODULE_FIRMWARE(MT7663_FIRMWARE_N9); 242 MODULE_FIRMWARE(MT7663_ROM_PATCH); 243 244 static DEFINE_SIMPLE_DEV_PM_OPS(mt7663s_pm_ops, mt7663s_suspend, mt7663s_resume); 245 246 static struct sdio_driver mt7663s_driver = { 247 .name = KBUILD_MODNAME, 248 .probe = mt7663s_probe, 249 .remove = mt7663s_remove, 250 .id_table = mt7663s_table, 251 .drv.pm = pm_sleep_ptr(&mt7663s_pm_ops), 252 }; 253 module_sdio_driver(mt7663s_driver); 254 255 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); 256 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>"); 257 MODULE_LICENSE("Dual BSD/GPL"); 258