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path: root/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c
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Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7921/sdio.c')
-rw-r--r--drivers/net/wireless/mediatek/mt76/mt7921/sdio.c321
1 files changed, 321 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c
new file mode 100644
index 000000000..8898ba69b
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c
@@ -0,0 +1,321 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2021 MediaTek Inc.
+ *
+ */
+
+#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 "mt7921.h"
+#include "../sdio.h"
+#include "mac.h"
+#include "mcu.h"
+
+static const struct sdio_device_id mt7921s_table[] = {
+ { SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, 0x7901) },
+ { } /* Terminating entry */
+};
+
+static void mt7921s_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 mt7921_dev *dev = container_of(mdev, struct mt7921_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 mt7921s_unregister_device(struct mt7921_dev *dev)
+{
+ struct mt76_connac_pm *pm = &dev->pm;
+
+ cancel_work_sync(&dev->init_work);
+ mt76_unregister_device(&dev->mt76);
+ cancel_delayed_work_sync(&pm->ps_work);
+ cancel_work_sync(&pm->wake_work);
+
+ mt76s_deinit(&dev->mt76);
+ mt7921s_wfsys_reset(dev);
+ skb_queue_purge(&dev->mt76.mcu.res_q);
+
+ mt76_free_device(&dev->mt76);
+}
+
+static int mt7921s_parse_intr(struct mt76_dev *dev, struct mt76s_intr *intr)
+{
+ struct mt76_sdio *sdio = &dev->sdio;
+ struct mt7921_sdio_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 < 0)
+ return err;
+
+ if (irq_data->rx.num[0] > 16 ||
+ irq_data->rx.num[1] > 128)
+ return -EINVAL;
+
+ 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++) {
+ if (!i)
+ intr->rx.len[0] = irq_data->rx.len0;
+ else
+ intr->rx.len[1] = irq_data->rx.len1;
+ }
+
+ return 0;
+}
+
+static int mt7921s_probe(struct sdio_func *func,
+ const struct sdio_device_id *id)
+{
+ static const struct mt76_driver_ops drv_ops = {
+ .txwi_size = MT_SDIO_TXD_SIZE,
+ .survey_flags = SURVEY_INFO_TIME_TX |
+ SURVEY_INFO_TIME_RX |
+ SURVEY_INFO_TIME_BSS_RX,
+ .tx_prepare_skb = mt7921_usb_sdio_tx_prepare_skb,
+ .tx_complete_skb = mt7921_usb_sdio_tx_complete_skb,
+ .tx_status_data = mt7921_usb_sdio_tx_status_data,
+ .rx_skb = mt7921_queue_rx_skb,
+ .rx_check = mt7921_rx_check,
+ .sta_ps = mt7921_sta_ps,
+ .sta_add = mt7921_mac_sta_add,
+ .sta_assoc = mt7921_mac_sta_assoc,
+ .sta_remove = mt7921_mac_sta_remove,
+ .update_survey = mt7921_update_channel,
+ };
+ static const struct mt76_bus_ops mt7921s_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,
+ };
+ static const struct mt7921_hif_ops mt7921_sdio_ops = {
+ .init_reset = mt7921s_init_reset,
+ .reset = mt7921s_mac_reset,
+ .mcu_init = mt7921s_mcu_init,
+ .drv_own = mt7921s_mcu_drv_pmctrl,
+ .fw_own = mt7921s_mcu_fw_pmctrl,
+ };
+
+ struct mt7921_dev *dev;
+ struct mt76_dev *mdev;
+ int ret;
+
+ mdev = mt76_alloc_device(&func->dev, sizeof(*dev), &mt7921_ops,
+ &drv_ops);
+ if (!mdev)
+ return -ENOMEM;
+
+ dev = container_of(mdev, struct mt7921_dev, mt76);
+ dev->hif_ops = &mt7921_sdio_ops;
+
+ sdio_set_drvdata(func, dev);
+
+ ret = mt76s_init(mdev, func, &mt7921s_ops);
+ if (ret < 0)
+ goto error;
+
+ ret = mt76s_hw_init(mdev, func, MT76_CONNAC2_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 = mt7921s_parse_intr;
+ mdev->sdio.intr_data = devm_kmalloc(mdev->dev,
+ sizeof(struct mt7921_sdio_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_rx_queue(mdev, MT_RXQ_MCU);
+ if (ret)
+ goto error;
+
+ ret = mt76s_alloc_tx(mdev);
+ if (ret)
+ goto error;
+
+ ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker,
+ mt7921s_txrx_worker, "sdio-txrx");
+ if (ret)
+ goto error;
+
+ sched_set_fifo_low(mdev->sdio.txrx_worker.task);
+
+ ret = mt7921_register_device(dev);
+ if (ret)
+ goto error;
+
+ return 0;
+
+error:
+ mt76s_deinit(&dev->mt76);
+ mt76_free_device(&dev->mt76);
+
+ return ret;
+}
+
+static void mt7921s_remove(struct sdio_func *func)
+{
+ struct mt7921_dev *dev = sdio_get_drvdata(func);
+
+ mt7921s_unregister_device(dev);
+}
+
+static int mt7921s_suspend(struct device *__dev)
+{
+ struct sdio_func *func = dev_to_sdio_func(__dev);
+ struct mt7921_dev *dev = sdio_get_drvdata(func);
+ struct mt76_connac_pm *pm = &dev->pm;
+ struct mt76_dev *mdev = &dev->mt76;
+ int err;
+
+ pm->suspended = true;
+ set_bit(MT76_STATE_SUSPEND, &mdev->phy.state);
+
+ flush_work(&dev->reset_work);
+ cancel_delayed_work_sync(&pm->ps_work);
+ cancel_work_sync(&pm->wake_work);
+
+ err = mt7921_mcu_drv_pmctrl(dev);
+ if (err < 0)
+ goto restore_suspend;
+
+ /* always enable deep sleep during suspend to reduce
+ * power consumption
+ */
+ mt76_connac_mcu_set_deep_sleep(mdev, true);
+
+ mt76_txq_schedule_all(&dev->mphy);
+ mt76_worker_disable(&mdev->tx_worker);
+ mt76_worker_disable(&mdev->sdio.status_worker);
+ mt76_worker_disable(&mdev->sdio.stat_worker);
+ clear_bit(MT76_READING_STATS, &dev->mphy.state);
+ mt76_tx_status_check(mdev, true);
+
+ mt76_worker_schedule(&mdev->sdio.txrx_worker);
+ wait_event_timeout(dev->mt76.sdio.wait,
+ mt76s_txqs_empty(&dev->mt76), 5 * HZ);
+
+ /* It is supposed that SDIO bus is idle at the point */
+ err = mt76_connac_mcu_set_hif_suspend(mdev, true);
+ if (err)
+ goto restore_worker;
+
+ mt76_worker_disable(&mdev->sdio.txrx_worker);
+ mt76_worker_disable(&mdev->sdio.net_worker);
+
+ err = mt7921_mcu_fw_pmctrl(dev);
+ if (err)
+ goto restore_txrx_worker;
+
+ sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+
+ return 0;
+
+restore_txrx_worker:
+ mt76_worker_enable(&mdev->sdio.net_worker);
+ mt76_worker_enable(&mdev->sdio.txrx_worker);
+ mt76_connac_mcu_set_hif_suspend(mdev, false);
+
+restore_worker:
+ mt76_worker_enable(&mdev->tx_worker);
+ mt76_worker_enable(&mdev->sdio.status_worker);
+ mt76_worker_enable(&mdev->sdio.stat_worker);
+
+ if (!pm->ds_enable)
+ mt76_connac_mcu_set_deep_sleep(mdev, false);
+
+restore_suspend:
+ clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state);
+ pm->suspended = false;
+
+ if (err < 0)
+ mt7921_reset(&dev->mt76);
+
+ return err;
+}
+
+static int mt7921s_resume(struct device *__dev)
+{
+ struct sdio_func *func = dev_to_sdio_func(__dev);
+ struct mt7921_dev *dev = sdio_get_drvdata(func);
+ struct mt76_connac_pm *pm = &dev->pm;
+ struct mt76_dev *mdev = &dev->mt76;
+ int err;
+
+ clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state);
+
+ err = mt7921_mcu_drv_pmctrl(dev);
+ if (err < 0)
+ goto failed;
+
+ mt76_worker_enable(&mdev->tx_worker);
+ mt76_worker_enable(&mdev->sdio.txrx_worker);
+ mt76_worker_enable(&mdev->sdio.status_worker);
+ mt76_worker_enable(&mdev->sdio.net_worker);
+ mt76_worker_enable(&mdev->sdio.stat_worker);
+
+ /* restore previous ds setting */
+ if (!pm->ds_enable)
+ mt76_connac_mcu_set_deep_sleep(mdev, false);
+
+ err = mt76_connac_mcu_set_hif_suspend(mdev, false);
+failed:
+ pm->suspended = false;
+
+ if (err < 0)
+ mt7921_reset(&dev->mt76);
+
+ return err;
+}
+
+MODULE_DEVICE_TABLE(sdio, mt7921s_table);
+MODULE_FIRMWARE(MT7921_FIRMWARE_WM);
+MODULE_FIRMWARE(MT7921_ROM_PATCH);
+
+static DEFINE_SIMPLE_DEV_PM_OPS(mt7921s_pm_ops, mt7921s_suspend, mt7921s_resume);
+
+static struct sdio_driver mt7921s_driver = {
+ .name = KBUILD_MODNAME,
+ .probe = mt7921s_probe,
+ .remove = mt7921s_remove,
+ .id_table = mt7921s_table,
+ .drv.pm = pm_sleep_ptr(&mt7921s_pm_ops),
+};
+module_sdio_driver(mt7921s_driver);
+MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
+MODULE_LICENSE("Dual BSD/GPL");