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mt76/mt7615/sdio.c
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Felix Fietkau 33f29d2345 wifi: mt76: relicense to BSD-3-Clause-Clear 
MediaTek has asked to switch from the ISC license to BSD-3-Clause-Clear,
in order to improve clarity and the legal integrity of the code.

The BSD-3-Clause license includes the "no endorsement" clause, which is
important for protecting the reputation of the original authors and
contributors by preventing unauthorized use of their names for endorsement
purposes.

This clause is absent in the BSD-2-Clause license, which is more permissive
but lacks this specific protection.

This change also cleans up the license of some Kconfig/Makefile files,
which were accidentally marked as GPL.

The GPL 2.0 remains in use on mt76x0, as well as two source files in mt7615
for which the license situation still needs to be clarified.

Signed-off-by: Felix Fietkau <[email protected]>
2025-10-13 11:11:19 +02:00

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// SPDX-License-Identifier: BSD-3-Clause-Clear
/* Copyright (C) 2020 MediaTek Inc.
*
* Author: Felix Fietkau <[email protected]>
* Lorenzo Bianconi <[email protected]>
* Sean Wang <[email protected]>
*/
#include <linux/kernel.h>
#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/sdio_func.h>
#include "../sdio.h"
#include "mt7615.h"
#include "mac.h"
#include "mcu.h"
static const struct sdio_device_id mt7663s_table[] = {
{ SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, 0x7603) },
{ } /* Terminating entry */
};
static void mt7663s_txrx_worker(struct mt76_worker *w)
{
struct mt76_sdio *sdio = container_of(w, struct mt76_sdio,
txrx_worker);
struct mt76_dev *mdev = container_of(sdio, struct mt76_dev, sdio);
struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
queue_work(mdev->wq, &dev->pm.wake_work);
return;
}
mt76s_txrx_worker(sdio);
mt76_connac_pm_unref(&dev->mphy, &dev->pm);
}
static void mt7663s_init_work(struct work_struct *work)
{
struct mt7615_dev *dev;
dev = container_of(work, struct mt7615_dev, mcu_work);
if (mt7663s_mcu_init(dev))
return;
mt7615_init_work(dev);
}
static int mt7663s_parse_intr(struct mt76_dev *dev, struct mt76s_intr *intr)
{
struct mt76_sdio *sdio = &dev->sdio;
struct mt7663s_intr *irq_data = sdio->intr_data;
int i, err;
sdio_claim_host(sdio->func);
err = sdio_readsb(sdio->func, irq_data, MCR_WHISR, sizeof(*irq_data));
sdio_release_host(sdio->func);
if (err)
return err;
intr->isr = irq_data->isr;
intr->rec_mb = irq_data->rec_mb;
intr->tx.wtqcr = irq_data->tx.wtqcr;
intr->rx.num = irq_data->rx.num;
for (i = 0; i < 2 ; i++)
intr->rx.len[i] = irq_data->rx.len[i];
return 0;
}
static int mt7663s_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
static const struct mt76_driver_ops drv_ops = {
.txwi_size = MT_USB_TXD_SIZE,
.drv_flags = MT_DRV_RX_DMA_HDR,
.tx_prepare_skb = mt7663_usb_sdio_tx_prepare_skb,
.tx_complete_skb = mt7663_usb_sdio_tx_complete_skb,
.tx_status_data = mt7663_usb_sdio_tx_status_data,
.rx_skb = mt7615_queue_rx_skb,
.rx_check = mt7615_rx_check,
.sta_add = mt7615_mac_sta_add,
.sta_remove = mt7615_mac_sta_remove,
.update_survey = mt7615_update_channel,
.set_channel = mt7615_set_channel,
};
static const struct mt76_bus_ops mt7663s_ops = {
.rr = mt76s_rr,
.rmw = mt76s_rmw,
.wr = mt76s_wr,
.write_copy = mt76s_write_copy,
.read_copy = mt76s_read_copy,
.wr_rp = mt76s_wr_rp,
.rd_rp = mt76s_rd_rp,
.type = MT76_BUS_SDIO,
};
struct ieee80211_ops *ops;
struct mt7615_dev *dev;
struct mt76_dev *mdev;
int ret;
ops = devm_kmemdup(&func->dev, &mt7615_ops, sizeof(mt7615_ops),
GFP_KERNEL);
if (!ops)
return -ENOMEM;
mdev = mt76_alloc_device(&func->dev, sizeof(*dev), ops, &drv_ops);
if (!mdev)
return -ENOMEM;
dev = container_of(mdev, struct mt7615_dev, mt76);
INIT_WORK(&dev->mcu_work, mt7663s_init_work);
dev->reg_map = mt7663_usb_sdio_reg_map;
dev->ops = ops;
sdio_set_drvdata(func, dev);
ret = mt76s_init(mdev, func, &mt7663s_ops);
if (ret < 0)
goto error;
ret = mt76s_hw_init(mdev, func, MT76_CONNAC_SDIO);
if (ret)
goto error;
mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
(mt76_rr(dev, MT_HW_REV) & 0xff);
dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
mdev->sdio.parse_irq = mt7663s_parse_intr;
mdev->sdio.intr_data = devm_kmalloc(mdev->dev,
sizeof(struct mt7663s_intr),
GFP_KERNEL);
if (!mdev->sdio.intr_data) {
ret = -ENOMEM;
goto error;
}
ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN);
if (ret)
goto error;
ret = mt76s_alloc_tx(mdev);
if (ret)
goto error;
ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker,
mt7663s_txrx_worker, "sdio-txrx");
if (ret)
goto error;
sched_set_fifo_low(mdev->sdio.txrx_worker.task);
ret = mt7663_usb_sdio_register_device(dev);
if (ret)
goto error;
return 0;
error:
mt76s_deinit(&dev->mt76);
mt76_free_device(&dev->mt76);
return ret;
}
static void mt7663s_remove(struct sdio_func *func)
{
struct mt7615_dev *dev = sdio_get_drvdata(func);
if (!test_and_clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
return;
ieee80211_unregister_hw(dev->mt76.hw);
mt76s_deinit(&dev->mt76);
mt76_free_device(&dev->mt76);
}
static int mt7663s_suspend(struct device *dev)
{
struct sdio_func *func = dev_to_sdio_func(dev);
struct mt7615_dev *mdev = sdio_get_drvdata(func);
int err;
if (!test_bit(MT76_STATE_SUSPEND, &mdev->mphy.state) &&
mt7615_firmware_offload(mdev)) {
int err;
err = mt76_connac_mcu_set_hif_suspend(&mdev->mt76, true, true);
if (err < 0)
return err;
}
sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
err = mt7615_mcu_set_fw_ctrl(mdev);
if (err)
return err;
mt76_worker_disable(&mdev->mt76.sdio.txrx_worker);
mt76_worker_disable(&mdev->mt76.sdio.status_worker);
mt76_worker_disable(&mdev->mt76.sdio.net_worker);
mt76_worker_disable(&mdev->mt76.sdio.stat_worker);
clear_bit(MT76_READING_STATS, &mdev->mphy.state);
mt76_tx_status_check(&mdev->mt76, true);
return 0;
}
static int mt7663s_resume(struct device *dev)
{
struct sdio_func *func = dev_to_sdio_func(dev);
struct mt7615_dev *mdev = sdio_get_drvdata(func);
int err;
mt76_worker_enable(&mdev->mt76.sdio.txrx_worker);
mt76_worker_enable(&mdev->mt76.sdio.status_worker);
mt76_worker_enable(&mdev->mt76.sdio.net_worker);
err = mt7615_mcu_set_drv_ctrl(mdev);
if (err)
return err;
if (!test_bit(MT76_STATE_SUSPEND, &mdev->mphy.state) &&
mt7615_firmware_offload(mdev))
err = mt76_connac_mcu_set_hif_suspend(&mdev->mt76, false, true);
return err;
}
MODULE_DEVICE_TABLE(sdio, mt7663s_table);
MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);
MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH);
MODULE_FIRMWARE(MT7663_FIRMWARE_N9);
MODULE_FIRMWARE(MT7663_ROM_PATCH);
static DEFINE_SIMPLE_DEV_PM_OPS(mt7663s_pm_ops, mt7663s_suspend, mt7663s_resume);
static struct sdio_driver mt7663s_driver = {
.name = KBUILD_MODNAME,
.probe = mt7663s_probe,
.remove = mt7663s_remove,
.id_table = mt7663s_table,
.drv.pm = pm_sleep_ptr(&mt7663s_pm_ops),
};
module_sdio_driver(mt7663s_driver);
MODULE_AUTHOR("Sean Wang <[email protected]>");
MODULE_AUTHOR("Lorenzo Bianconi <[email protected]>");
MODULE_DESCRIPTION("MediaTek MT7663S (SDIO) wireless driver");
MODULE_LICENSE("Dual BSD/GPL");
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