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[U-Boot,170/172] ddr: altera: Clean up of delay_for_n_mem_clocks() part 3

Message ID 1438030335-10631-171-git-send-email-marex@denx.de
State Accepted
Delegated to: Marek Vasut
Headers show

Commit Message

Marek Vasut July 27, 2015, 8:52 p.m. UTC 
Clean up the computation of c_loop, outer and inner variables.

Signed-off-by: Marek Vasut <marex@denx.de>
---
 drivers/ddr/altera/sequencer.c | 24 ++++++------------------
 1 file changed, 6 insertions(+), 18 deletions(-)
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Patch

diff --git a/drivers/ddr/altera/sequencer.c b/drivers/ddr/altera/sequencer.c
index 25de209..ed4d791 100644
--- a/drivers/ddr/altera/sequencer.c
+++ b/drivers/ddr/altera/sequencer.c
@@ -761,9 +761,9 @@  static void set_jump_as_return(void)
 static void delay_for_n_mem_clocks(const u32 clocks)
 {
 	u32 afi_clocks;
-	u16 c_loop = 0;
-	u8 inner = 0;
-	u8 outer = 0;
+	u16 c_loop;
+	u8 inner;
+	u8 outer;
 
 	debug("%s:%d: clocks=%u ... start\n", __func__, __LINE__, clocks);
 
@@ -779,21 +779,9 @@  static void delay_for_n_mem_clocks(const u32 clocks)
 	 * before the decrement, and so always perform the loop
 	 * 1 time more than the counter value
 	 */
-	if (afi_clocks == 0) {
-		;
-	} else if (afi_clocks < 0x100) {
-		inner = afi_clocks;
-		outer = 0;
-		c_loop = 0;
-	} else if (afi_clocks < 0x10000) {
-		inner = 0xff;
-		outer = afi_clocks >> 8;
-		c_loop = 0;
-	} else {	/* >= 0x10000 */
-		inner = 0xff;
-		outer = 0xff;
-		c_loop = afi_clocks >> 16;
-	}
+	c_loop = afi_clocks >> 16;
+	outer = c_loop ? 0xff : (afi_clocks >> 8);
+	inner = outer ? 0xff : afi_clocks;
 
 	/*
 	 * rom instructions are structured as follows: