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>

1 files changed, 42 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h
new file mode 100644
index 000000000000..4bf14fd8916d
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h
@@ -0,0 +1,42 @@
+/*
+ * 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