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_add = mt7615_mac_sta_add, 88 .sta_remove = mt7615_mac_sta_remove, 89 .update_survey = mt7615_update_channel, 90 }; 91 static const struct mt76_bus_ops mt7663s_ops = { 92 .rr = mt76s_rr, 93 .rmw = mt76s_rmw, 94 .wr = mt76s_wr, 95 .write_copy = mt76s_write_copy, 96 .read_copy = mt76s_read_copy, 97 .wr_rp = mt76s_wr_rp, 98 .rd_rp = mt76s_rd_rp, 99 .type = MT76_BUS_SDIO, 100 }; 101 struct ieee80211_ops *ops; 102 struct mt7615_dev *dev; 103 struct mt76_dev *mdev; 104 int ret; 105 106 ops = devm_kmemdup(&func->dev, &mt7615_ops, sizeof(mt7615_ops), 107 GFP_KERNEL); 108 if (!ops) 109 return -ENOMEM; 110 111 mdev = mt76_alloc_device(&func->dev, sizeof(*dev), ops, &drv_ops); 112 if (!mdev) 113 return -ENOMEM; 114 115 dev = container_of(mdev, struct mt7615_dev, mt76); 116 117 INIT_WORK(&dev->mcu_work, mt7663s_init_work); 118 dev->reg_map = mt7663_usb_sdio_reg_map; 119 dev->ops = ops; 120 sdio_set_drvdata(func, dev); 121 122 ret = mt76s_init(mdev, func, &mt7663s_ops); 123 if (ret < 0) 124 goto error; 125 126 ret = mt76s_hw_init(mdev, func, MT76_CONNAC_SDIO); 127 if (ret) 128 goto error; 129 130 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 131 (mt76_rr(dev, MT_HW_REV) & 0xff); 132 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 133 134 mdev->sdio.parse_irq = mt7663s_parse_intr; 135 mdev->sdio.intr_data = devm_kmalloc(mdev->dev, 136 sizeof(struct mt7663s_intr), 137 GFP_KERNEL); 138 if (!mdev->sdio.intr_data) { 139 ret = -ENOMEM; 140 goto error; 141 } 142 143 ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN); 144 if (ret) 145 goto error; 146 147 ret = mt76s_alloc_tx(mdev); 148 if (ret) 149 goto error; 150 151 ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker, 152 mt7663s_txrx_worker, "sdio-txrx"); 153 if (ret) 154 goto error; 155 156 sched_set_fifo_low(mdev->sdio.txrx_worker.task); 157 158 ret = mt7663_usb_sdio_register_device(dev); 159 if (ret) 160 goto error; 161 162 return 0; 163 164 error: 165 mt76s_deinit(&dev->mt76); 166 mt76_free_device(&dev->mt76); 167 168 return ret; 169 } 170 171 static void mt7663s_remove(struct sdio_func *func) 172 { 173 struct mt7615_dev *dev = sdio_get_drvdata(func); 174 175 if (!test_and_clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state)) 176 return; 177 178 ieee80211_unregister_hw(dev->mt76.hw); 179 mt76s_deinit(&dev->mt76); 180 mt76_free_device(&dev->mt76); 181 } 182 183 static int mt7663s_suspend(struct device *dev) 184 { 185 struct sdio_func *func = dev_to_sdio_func(dev); 186 struct mt7615_dev *mdev = sdio_get_drvdata(func); 187 int err; 188 189 if (!test_bit(MT76_STATE_SUSPEND, &mdev->mphy.state) && 190 mt7615_firmware_offload(mdev)) { 191 int err; 192 193 err = mt76_connac_mcu_set_hif_suspend(&mdev->mt76, true); 194 if (err < 0) 195 return err; 196 } 197 198 sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 199 200 err = mt7615_mcu_set_fw_ctrl(mdev); 201 if (err) 202 return err; 203 204 mt76_worker_disable(&mdev->mt76.sdio.txrx_worker); 205 mt76_worker_disable(&mdev->mt76.sdio.status_worker); 206 mt76_worker_disable(&mdev->mt76.sdio.net_worker); 207 mt76_worker_disable(&mdev->mt76.sdio.stat_worker); 208 209 clear_bit(MT76_READING_STATS, &mdev->mphy.state); 210 211 mt76_tx_status_check(&mdev->mt76, true); 212 213 return 0; 214 } 215 216 static int mt7663s_resume(struct device *dev) 217 { 218 struct sdio_func *func = dev_to_sdio_func(dev); 219 struct mt7615_dev *mdev = sdio_get_drvdata(func); 220 int err; 221 222 mt76_worker_enable(&mdev->mt76.sdio.txrx_worker); 223 mt76_worker_enable(&mdev->mt76.sdio.status_worker); 224 mt76_worker_enable(&mdev->mt76.sdio.net_worker); 225 226 err = mt7615_mcu_set_drv_ctrl(mdev); 227 if (err) 228 return err; 229 230 if (!test_bit(MT76_STATE_SUSPEND, &mdev->mphy.state) && 231 mt7615_firmware_offload(mdev)) 232 err = mt76_connac_mcu_set_hif_suspend(&mdev->mt76, false); 233 234 return err; 235 } 236 237 MODULE_DEVICE_TABLE(sdio, mt7663s_table); 238 MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9); 239 MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH); 240 MODULE_FIRMWARE(MT7663_FIRMWARE_N9); 241 MODULE_FIRMWARE(MT7663_ROM_PATCH); 242 243 static DEFINE_SIMPLE_DEV_PM_OPS(mt7663s_pm_ops, mt7663s_suspend, mt7663s_resume); 244 245 static struct sdio_driver mt7663s_driver = { 246 .name = KBUILD_MODNAME, 247 .probe = mt7663s_probe, 248 .remove = mt7663s_remove, 249 .id_table = mt7663s_table, 250 .drv.pm = pm_sleep_ptr(&mt7663s_pm_ops), 251 }; 252 module_sdio_driver(mt7663s_driver); 253 254 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); 255 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>"); 256 MODULE_DESCRIPTION("MediaTek MT7663S (SDIO) wireless driver"); 257 MODULE_LICENSE("Dual BSD/GPL"); 258