From: Marek Vasut <marex@denx.de>
Date: Fri, 17 Jul 2015 01:50:17 +0000 (+0200)
Subject: ddr: altera: Internal rw_mgr_mem_calibrate_vfifo() cleanup part 4
X-Git-Tag: v2015.10-rc2~287
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=fe2d0a2da1b11e4702fcd08705fcce16f0fc2427;p=oweals%2Fu-boot.git

ddr: altera: Internal rw_mgr_mem_calibrate_vfifo() cleanup part 4

This is kind of microseries-within-series indent cleanup.
This patch cleans up the handling of grp_calibrated such
that the variable isn't used all over the place, but just
very localy. This allows trimming down the indent issues.

It is likely that this patch has checkpatch warnings, but
for the sake of not breaking the code, these are ignored.

No functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
---

diff --git a/drivers/ddr/altera/sequencer.c b/drivers/ddr/altera/sequencer.c
index 81c33071af..2d16ce5c88 100644
--- a/drivers/ddr/altera/sequencer.c
+++ b/drivers/ddr/altera/sequencer.c
@@ -2226,12 +2226,10 @@ static uint32_t rw_mgr_mem_calibrate_vfifo(uint32_t read_group,
 	/* update info for sims */
 	reg_file_set_group(read_group);
 
-	grp_calibrated = 0;
-
 	reg_file_set_sub_stage(CAL_SUBSTAGE_GUARANTEED_READ);
 	failed_substage = CAL_SUBSTAGE_GUARANTEED_READ;
 
-	for (d = 0; d <= dtaps_per_ptap && grp_calibrated == 0; d += 2) {
+	for (d = 0; d <= dtaps_per_ptap; d += 2) {
 		/*
 		 * In RLDRAMX we may be messing the delay of pins in
 		 * the same write group but outside of the current read
@@ -2243,7 +2241,7 @@ static uint32_t rw_mgr_mem_calibrate_vfifo(uint32_t read_group,
 								write_group, d);
 		}
 
-		for (p = 0; p <= IO_DQDQS_OUT_PHASE_MAX && grp_calibrated == 0; p++) {
+		for (p = 0; p <= IO_DQDQS_OUT_PHASE_MAX; p++) {
 			/* set a particular dqdqs phase */
 			scc_mgr_set_dqdqs_output_phase_all_ranks(read_group, p);
 
@@ -2268,49 +2266,52 @@ static uint32_t rw_mgr_mem_calibrate_vfifo(uint32_t read_group,
 			}
 
 			/* case:56390 */
-			grp_calibrated = 1;
-			if (rw_mgr_mem_calibrate_vfifo_find_dqs_en_phase_sweep_dq_in_delay
+			if (!rw_mgr_mem_calibrate_vfifo_find_dqs_en_phase_sweep_dq_in_delay
 			    (write_group, read_group, test_bgn)) {
-					/*
-					 * USER Read per-bit deskew can be done on a
-					 * per shadow register basis.
-					 */
-					for (rank_bgn = 0, sr = 0;
-					     rank_bgn < RW_MGR_MEM_NUMBER_OF_RANKS;
-					     rank_bgn += NUM_RANKS_PER_SHADOW_REG, sr++) {
-						/*
-						 * Determine if this set of ranks
-						 * should be skipped entirely.
-						 */
-						if (param->skip_shadow_regs[sr])
-							continue;
-						/*
-						 * If doing read after write
-						 * calibration, do not update
-						 * FOM, now - do it then.
-						 */
-						if (rw_mgr_mem_calibrate_vfifo_center
-								(rank_bgn, write_group,
-								read_group, test_bgn,
-								1, 0))
-							continue;
-
-						grp_calibrated = 0;
-						failed_substage = CAL_SUBSTAGE_VFIFO_CENTER;
-					}
-			} else {
-				grp_calibrated = 0;
 				failed_substage = CAL_SUBSTAGE_DQS_EN_PHASE;
+				continue;
+			}
+
+			/*
+			 * USER Read per-bit deskew can be done on a
+			 * per shadow register basis.
+			 */
+			grp_calibrated = 1;
+			for (rank_bgn = 0, sr = 0;
+			     rank_bgn < RW_MGR_MEM_NUMBER_OF_RANKS;
+			     rank_bgn += NUM_RANKS_PER_SHADOW_REG, sr++) {
+				/*
+				 * Determine if this set of ranks
+				 * should be skipped entirely.
+				 */
+				if (param->skip_shadow_regs[sr])
+					continue;
+				/*
+				 * If doing read after write
+				 * calibration, do not update
+				 * FOM, now - do it then.
+				 */
+				if (rw_mgr_mem_calibrate_vfifo_center(rank_bgn,
+							write_group, read_group,
+							test_bgn, 1, 0))
+
+					continue;
+
+				grp_calibrated = 0;
+				failed_substage = CAL_SUBSTAGE_VFIFO_CENTER;
 			}
+
+			if (grp_calibrated)
+				goto cal_done_ok;
 		}
 	}
 
-	if (grp_calibrated == 0) {
-		set_failing_group_stage(write_group, CAL_STAGE_VFIFO,
-					failed_substage);
-		return 0;
-	}
+	/* Calibration Stage 1 failed. */
+	set_failing_group_stage(write_group, CAL_STAGE_VFIFO, failed_substage);
+	return 0;
 
+	/* Calibration Stage 1 completed OK. */
+cal_done_ok:
 	/*
 	 * Reset the delay chains back to zero if they have moved > 1
 	 * (check for > 1 because loop will increase d even when pass in