From e7138b34b0def8c015cca74dd4b25d9bc0aca069 Mon Sep 17 00:00:00 2001
From: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Date: Sat, 23 Jan 2016 11:54:33 +0100
Subject: [PATCH] net: zynq_gem: Use shared wait_for_bit

Use existing library function to poll bit(s).
Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
---
 drivers/net/zynq_gem.c | 35 ++---------------------------------
 1 file changed, 2 insertions(+), 33 deletions(-)

diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c
index 7059c8432a3..97e30f3be04 100644
--- a/drivers/net/zynq_gem.c
+++ b/drivers/net/zynq_gem.c
@@ -19,6 +19,7 @@
 #include <asm/io.h>
 #include <phy.h>
 #include <miiphy.h>
+#include <wait_bit.h>
 #include <watchdog.h>
 #include <asm/system.h>
 #include <asm/arch/hardware.h>
@@ -448,38 +449,6 @@ static int zynq_gem_init(struct udevice *dev)
 	return 0;
 }
 
-static int wait_for_bit(const char *func, u32 *reg, const u32 mask,
-			bool set, unsigned int timeout)
-{
-	u32 val;
-	unsigned long start = get_timer(0);
-
-	while (1) {
-		val = readl(reg);
-
-		if (!set)
-			val = ~val;
-
-		if ((val & mask) == mask)
-			return 0;
-
-		if (get_timer(start) > timeout)
-			break;
-
-		if (ctrlc()) {
-			puts("Abort\n");
-			return -EINTR;
-		}
-
-		udelay(1);
-	}
-
-	debug("%s: Timeout (reg=%p mask=%08x wait_set=%i)\n",
-	      func, reg, mask, set);
-
-	return -ETIMEDOUT;
-}
-
 static int zynq_gem_send(struct udevice *dev, void *ptr, int len)
 {
 	u32 addr, size;
@@ -521,7 +490,7 @@ static int zynq_gem_send(struct udevice *dev, void *ptr, int len)
 		printf("TX buffers exhausted in mid frame\n");
 
 	return wait_for_bit(__func__, &regs->txsr, ZYNQ_GEM_TSR_DONE,
-			    true, 20000);
+			    true, 20000, true);
 }
 
 /* Do not check frame_recd flag in rx_status register 0x20 - just poll BD */