mt76: mt7921: refactor init.c to be bus independent

This is a preliminary patch to introduce mt7921s support.

Make init.c reusable between mt7921s and mt7921e
Tested-by: Deren Wu <deren.wu@mediatek.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7921/dma.c

@@ -343,6 +343,9 @@ int mt7921_dma_init(struct mt7921_dev *dev)
 	struct mt76_bus_ops *bus_ops;
 	int ret;
 
+	dev->phy.dev = dev;
+	dev->phy.mt76 = &dev->mt76.phy;
+	dev->mt76.phy.priv = &dev->phy;
 	dev->bus_ops = dev->mt76.bus;
 	bus_ops = devm_kmemdup(dev->mt76.dev, dev->bus_ops, sizeof(*bus_ops),
 			       GFP_KERNEL);

drivers/net/wireless/mediatek/mt76/mt7921/init.c

@@ -181,10 +181,6 @@ static int mt7921_init_hardware(struct mt7921_dev *dev)
 {
 	int ret, idx, i;
 
-	ret = mt7921_dma_init(dev);
-	if (ret)
-		return ret;
-
 	set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
 
 	for (i = 0; i < MT7921_MCU_INIT_RETRY_COUNT; i++) {
@@ -192,7 +188,7 @@ static int mt7921_init_hardware(struct mt7921_dev *dev)
 		if (!ret)
 			break;
 
-		mt7921_wpdma_reset(dev, true);
+		mt7921_init_reset(dev);
 	}
 
 	if (i == MT7921_MCU_INIT_RETRY_COUNT) {
@@ -289,24 +285,3 @@ int mt7921_register_device(struct mt7921_dev *dev)
 
 	return 0;
 }
-
-void mt7921_unregister_device(struct mt7921_dev *dev)
-{
-	int i;
-	struct mt76_connac_pm *pm = &dev->pm;
-
-	mt76_unregister_device(&dev->mt76);
-	mt76_for_each_q_rx(&dev->mt76, i)
-		napi_disable(&dev->mt76.napi[i]);
-	cancel_delayed_work_sync(&pm->ps_work);
-	cancel_work_sync(&pm->wake_work);
-
-	mt7921_tx_token_put(dev);
-	mt7921_mcu_drv_pmctrl(dev);
-	mt7921_dma_cleanup(dev);
-	mt7921_wfsys_reset(dev);
-	mt7921_mcu_exit(dev);
-
-	tasklet_disable(&dev->irq_tasklet);
-	mt76_free_device(&dev->mt76);
-}

drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h

@@ -133,11 +133,13 @@ struct mt7921_phy {
 	struct delayed_work scan_work;
 };
 
+#define mt7921_init_reset(dev)		((dev)->hif_ops->init_reset(dev))
 #define mt7921_dev_reset(dev)		((dev)->hif_ops->reset(dev))
 #define mt7921_mcu_init(dev)		((dev)->hif_ops->mcu_init(dev))
 #define __mt7921_mcu_drv_pmctrl(dev)	((dev)->hif_ops->drv_own(dev))
 #define	__mt7921_mcu_fw_pmctrl(dev)	((dev)->hif_ops->fw_own(dev))
 struct mt7921_hif_ops {
+	int (*init_reset)(struct mt7921_dev *dev);
 	int (*reset)(struct mt7921_dev *dev);
 	int (*mcu_init)(struct mt7921_dev *dev);
 	int (*drv_own)(struct mt7921_dev *dev);

drivers/net/wireless/mediatek/mt76/mt7921/pci.c

@@ -93,6 +93,32 @@ static void mt7921_irq_tasklet(unsigned long data)
 		napi_schedule(&dev->mt76.napi[MT_RXQ_MAIN]);
 }
 
+static int mt7921e_init_reset(struct mt7921_dev *dev)
+{
+	return mt7921_wpdma_reset(dev, true);
+}
+
+static void mt7921e_unregister_device(struct mt7921_dev *dev)
+{
+	int i;
+	struct mt76_connac_pm *pm = &dev->pm;
+
+	mt76_unregister_device(&dev->mt76);
+	mt76_for_each_q_rx(&dev->mt76, i)
+		napi_disable(&dev->mt76.napi[i]);
+	cancel_delayed_work_sync(&pm->ps_work);
+	cancel_work_sync(&pm->wake_work);
+
+	mt7921_tx_token_put(dev);
+	mt7921_mcu_drv_pmctrl(dev);
+	mt7921_dma_cleanup(dev);
+	mt7921_wfsys_reset(dev);
+	mt7921_mcu_exit(dev);
+
+	tasklet_disable(&dev->irq_tasklet);
+	mt76_free_device(&dev->mt76);
+}
+
 static int mt7921_pci_probe(struct pci_dev *pdev,
 			    const struct pci_device_id *id)
 {
@@ -116,6 +142,7 @@ static int mt7921_pci_probe(struct pci_dev *pdev,
 	};
 
 	static const struct mt7921_hif_ops mt7921_pcie_ops = {
+		.init_reset = mt7921e_init_reset,
 		.reset = mt7921e_mac_reset,
 		.mcu_init = mt7921e_mcu_init,
 		.drv_own = mt7921e_mcu_drv_pmctrl,
@@ -172,6 +199,10 @@ static int mt7921_pci_probe(struct pci_dev *pdev,
 	if (ret)
 		goto err_free_dev;
 
+	ret = mt7921_dma_init(dev);
+	if (ret)
+		goto err_free_irq;
+
 	ret = mt7921_register_device(dev);
 	if (ret)
 		goto err_free_irq;
@@ -193,7 +224,7 @@ static void mt7921_pci_remove(struct pci_dev *pdev)
 	struct mt76_dev *mdev = pci_get_drvdata(pdev);
 	struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
 
-	mt7921_unregister_device(dev);
+	mt7921e_unregister_device(dev);
 	devm_free_irq(&pdev->dev, pdev->irq, dev);
 	pci_free_irq_vectors(pdev);
 }