mt76: unify wait_for_mac

Create new mt76x02_mac.h for common mac functions of mt76x0 and mt76x2
and unity wait_for_mac for both drivers.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/mediatek/mt76/mt76x0/init.c

@@ -384,9 +384,11 @@ int mt76x0_init_hardware(struct mt76x0_dev *dev)
 
 	mt76x0_chip_onoff(dev, true, true);
 
-	ret = mt76x0_wait_asic_ready(dev);
-	if (ret)
+	if (!mt76x02_wait_for_mac(&dev->mt76)) {
+		ret = -ETIMEDOUT;
 		goto err;
+	}
+
 	ret = mt76x0_mcu_init(dev);
 	if (ret)
 		goto err;
@@ -399,9 +401,10 @@ int mt76x0_init_hardware(struct mt76x0_dev *dev)
 	}
 
 	/* Wait for ASIC ready after FW load. */
-	ret = mt76x0_wait_asic_ready(dev);
-	if (ret)
+	if (!mt76x02_wait_for_mac(&dev->mt76)) {
+		ret = -ETIMEDOUT;
 		goto err;
+	}
 
 	mt76x0_reset_csr_bbp(dev);
 	mt76x0_init_usb_dma(dev);

drivers/net/wireless/mediatek/mt76/mt76x0/mt76x0.h

@@ -26,6 +26,7 @@
 #include <linux/debugfs.h>
 
 #include "../mt76.h"
+#include "../mt76x02_mac.h"
 #include "regs.h"
 
 #define MT_CALIBRATE_INTERVAL		(4 * HZ)
@@ -263,8 +264,6 @@ static inline bool is_mt7610e(struct mt76x0_dev *dev)
 
 void mt76x0_init_debugfs(struct mt76x0_dev *dev);
 
-int mt76x0_wait_asic_ready(struct mt76x0_dev *dev);
-
 /* Compatibility with mt76 */
 #define mt76_rmw_field(_dev, _reg, _field, _val)	\
 	mt76_rmw(_dev, _reg, _field, FIELD_PREP(_field, _val))

drivers/net/wireless/mediatek/mt76/mt76x0/usb.c

@@ -287,9 +287,10 @@ static int mt76x0_probe(struct usb_interface *usb_intf,
 	/* Disable the HW, otherwise MCU fail to initalize on hot reboot */
 	mt76x0_chip_onoff(dev, false, false);
 
-	ret = mt76x0_wait_asic_ready(dev);
-	if (ret)
+	if (!mt76x02_wait_for_mac(&dev->mt76)) {
+		ret = -ETIMEDOUT;
 		goto err;
+	}
 
 	asic_rev = mt76_rr(dev, MT_ASIC_VERSION);
 	mac_rev = mt76_rr(dev, MT_MAC_CSR0);

drivers/net/wireless/mediatek/mt76/mt76x02_mac.h

+/*
+ * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
+ * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef __MT76X02_MAC_H
+#define __MT76X02_MAC_H
+
+static inline bool mt76x02_wait_for_mac(struct mt76_dev *dev)
+{
+	const u32 MAC_CSR0 = 0x1000;
+	int i;
+
+	for (i = 0; i < 500; i++) {
+		if (test_bit(MT76_REMOVED, &dev->state))
+			return -EIO;
+
+		switch (dev->bus->rr(dev, MAC_CSR0)) {
+		case 0:
+		case ~0:
+			break;
+		default:
+			return true;
+		}
+		usleep_range(5000, 10000);
+	}
+	return false;
+}
+
+#endif

drivers/net/wireless/mediatek/mt76/mt76x2.h

@@ -163,23 +163,6 @@ struct mt76x2_sta {
 	int inactive_count;
 };
 
-static inline bool mt76x2_wait_for_mac(struct mt76x2_dev *dev)
-{
-	int i;
-
-	for (i = 0; i < 500; i++) {
-		switch (mt76_rr(dev, MT_MAC_CSR0)) {
-		case 0:
-		case ~0:
-			break;
-		default:
-			return true;
-		}
-		usleep_range(5000, 10000);
-	}
-	return false;
-}
-
 static inline bool is_mt7612(struct mt76x2_dev *dev)
 {
 	return mt76_chip(&dev->mt76) == 0x7612;

drivers/net/wireless/mediatek/mt76/mt76x2_init.c

@@ -101,7 +101,7 @@ static int mt76x2_mac_reset(struct mt76x2_dev *dev, bool hard)
 	u32 val;
 	int i, k;
 
-	if (!mt76x2_wait_for_mac(dev))
+	if (!mt76x02_wait_for_mac(&dev->mt76))
 		return -ETIMEDOUT;
 
 	val = mt76_rr(dev, MT_WPDMA_GLO_CFG);

drivers/net/wireless/mediatek/mt76/mt76x2_mac.h

@@ -18,6 +18,7 @@
 #define __MT76x2_MAC_H
 
 #include "mt76.h"
+#include "mt76x02_mac.h"
 
 struct mt76x2_dev;
 struct mt76x2_sta;

drivers/net/wireless/mediatek/mt76/mt76x2u_init.c

@@ -184,7 +184,7 @@ int mt76x2u_init_hardware(struct mt76x2_dev *dev)
 	mt76x2_reset_wlan(dev, true);
 	mt76x2u_power_on(dev);
 
-	if (!mt76x2_wait_for_mac(dev))
+	if (!mt76x02_wait_for_mac(&dev->mt76))
 		return -ETIMEDOUT;
 
 	err = mt76x2u_mcu_fw_init(dev);
@@ -197,7 +197,7 @@ int mt76x2u_init_hardware(struct mt76x2_dev *dev)
 		return -EIO;
 
 	/* wait for asic ready after fw load. */
-	if (!mt76x2_wait_for_mac(dev))
+	if (!mt76x02_wait_for_mac(&dev->mt76))
 		return -ETIMEDOUT;
 
 	mt76_wr(dev, MT_HEADER_TRANS_CTRL_REG, 0);