ddr: altera: Trivial mem_calibrate() indent cleanup
Redo the mega-condition such that if the calibration is to be skipped,
the positive branch of the condition does all the work and returns.
The negative branch, which is in fact the default behavior, is then
converted to a code which is no longer conditional. This trims down
the indent by one level.
Signed-off-by: Marek Vasut <marex@denx.de>
diff --git a/drivers/ddr/altera/sequencer.c b/drivers/ddr/altera/sequencer.c
index 874868d..77a1308 100644
--- a/drivers/ddr/altera/sequencer.c
+++ b/drivers/ddr/altera/sequencer.c
@@ -3295,152 +3295,161 @@
scc_set_bypass_mode(i);
}
+ /* Calibration is skipped. */
if ((dyn_calib_steps & CALIB_SKIP_ALL) == CALIB_SKIP_ALL) {
/*
* Set VFIFO and LFIFO to instant-on settings in skip
* calibration mode.
*/
mem_skip_calibrate();
- } else {
- for (i = 0; i < NUM_CALIB_REPEAT; i++) {
- /*
- * Zero all delay chain/phase settings for all
- * groups and all shadow register sets.
- */
- scc_mgr_zero_all();
- run_groups = ~param->skip_groups;
+ /*
+ * Do not remove this line as it makes sure all of our
+ * decisions have been applied.
+ */
+ writel(0, &sdr_scc_mgr->update);
+ return 1;
+ }
- for (write_group = 0, write_test_bgn = 0; write_group
- < RW_MGR_MEM_IF_WRITE_DQS_WIDTH; write_group++,
- write_test_bgn += RW_MGR_MEM_DQ_PER_WRITE_DQS) {
- /* Initialized the group failure */
- group_failed = 0;
+ /* Calibration is not skipped. */
+ for (i = 0; i < NUM_CALIB_REPEAT; i++) {
+ /*
+ * Zero all delay chain/phase settings for all
+ * groups and all shadow register sets.
+ */
+ scc_mgr_zero_all();
- current_run = run_groups & ((1 <<
- RW_MGR_NUM_DQS_PER_WRITE_GROUP) - 1);
- run_groups = run_groups >>
- RW_MGR_NUM_DQS_PER_WRITE_GROUP;
+ run_groups = ~param->skip_groups;
- if (current_run == 0)
- continue;
+ for (write_group = 0, write_test_bgn = 0; write_group
+ < RW_MGR_MEM_IF_WRITE_DQS_WIDTH; write_group++,
+ write_test_bgn += RW_MGR_MEM_DQ_PER_WRITE_DQS) {
+ /* Initialized the group failure */
+ group_failed = 0;
- writel(write_group, SDR_PHYGRP_SCCGRP_ADDRESS |
- SCC_MGR_GROUP_COUNTER_OFFSET);
- scc_mgr_zero_group(write_group, 0);
+ current_run = run_groups & ((1 <<
+ RW_MGR_NUM_DQS_PER_WRITE_GROUP) - 1);
+ run_groups = run_groups >>
+ RW_MGR_NUM_DQS_PER_WRITE_GROUP;
+ if (current_run == 0)
+ continue;
+
+ writel(write_group, SDR_PHYGRP_SCCGRP_ADDRESS |
+ SCC_MGR_GROUP_COUNTER_OFFSET);
+ scc_mgr_zero_group(write_group, 0);
+
+ for (read_group = write_group *
+ RW_MGR_MEM_IF_READ_DQS_WIDTH /
+ RW_MGR_MEM_IF_WRITE_DQS_WIDTH,
+ read_test_bgn = 0;
+ read_group < (write_group + 1) *
+ RW_MGR_MEM_IF_READ_DQS_WIDTH /
+ RW_MGR_MEM_IF_WRITE_DQS_WIDTH &&
+ group_failed == 0;
+ read_group++, read_test_bgn +=
+ RW_MGR_MEM_DQ_PER_READ_DQS) {
+ /* Calibrate the VFIFO */
+ if (!((STATIC_CALIB_STEPS) &
+ CALIB_SKIP_VFIFO)) {
+ if (!rw_mgr_mem_calibrate_vfifo
+ (read_group,
+ read_test_bgn)) {
+ group_failed = 1;
+
+ if (!(gbl->
+ phy_debug_mode_flags &
+ PHY_DEBUG_SWEEP_ALL_GROUPS)) {
+ return 0;
+ }
+ }
+ }
+ }
+
+ /* Calibrate the output side */
+ if (group_failed == 0) {
+ for (rank_bgn = 0, sr = 0; rank_bgn
+ < RW_MGR_MEM_NUMBER_OF_RANKS;
+ rank_bgn +=
+ NUM_RANKS_PER_SHADOW_REG,
+ ++sr) {
+ sr_failed = 0;
+ if (!((STATIC_CALIB_STEPS) &
+ CALIB_SKIP_WRITES)) {
+ if ((STATIC_CALIB_STEPS)
+ & CALIB_SKIP_DELAY_SWEEPS) {
+ /* not needed in quick mode! */
+ } else {
+ /*
+ * Determine if this set of
+ * ranks should be skipped
+ * entirely.
+ */
+ if (!param->skip_shadow_regs[sr]) {
+ if (!rw_mgr_mem_calibrate_writes
+ (rank_bgn, write_group,
+ write_test_bgn)) {
+ sr_failed = 1;
+ if (!(gbl->
+ phy_debug_mode_flags &
+ PHY_DEBUG_SWEEP_ALL_GROUPS)) {
+ return 0;
+ }
+ }
+ }
+ }
+ }
+ if (sr_failed != 0)
+ group_failed = 1;
+ }
+ }
+
+ if (group_failed == 0) {
for (read_group = write_group *
- RW_MGR_MEM_IF_READ_DQS_WIDTH /
- RW_MGR_MEM_IF_WRITE_DQS_WIDTH,
- read_test_bgn = 0;
- read_group < (write_group + 1) *
- RW_MGR_MEM_IF_READ_DQS_WIDTH /
- RW_MGR_MEM_IF_WRITE_DQS_WIDTH &&
+ RW_MGR_MEM_IF_READ_DQS_WIDTH /
+ RW_MGR_MEM_IF_WRITE_DQS_WIDTH,
+ read_test_bgn = 0;
+ read_group < (write_group + 1)
+ * RW_MGR_MEM_IF_READ_DQS_WIDTH
+ / RW_MGR_MEM_IF_WRITE_DQS_WIDTH &&
group_failed == 0;
read_group++, read_test_bgn +=
RW_MGR_MEM_DQ_PER_READ_DQS) {
- /* Calibrate the VFIFO */
if (!((STATIC_CALIB_STEPS) &
- CALIB_SKIP_VFIFO)) {
- if (!rw_mgr_mem_calibrate_vfifo
- (read_group,
- read_test_bgn)) {
- group_failed = 1;
-
- if (!(gbl->
- phy_debug_mode_flags &
- PHY_DEBUG_SWEEP_ALL_GROUPS)) {
- return 0;
- }
- }
- }
- }
-
- /* Calibrate the output side */
- if (group_failed == 0) {
- for (rank_bgn = 0, sr = 0; rank_bgn
- < RW_MGR_MEM_NUMBER_OF_RANKS;
- rank_bgn +=
- NUM_RANKS_PER_SHADOW_REG,
- ++sr) {
- sr_failed = 0;
- if (!((STATIC_CALIB_STEPS) &
CALIB_SKIP_WRITES)) {
- if ((STATIC_CALIB_STEPS)
- & CALIB_SKIP_DELAY_SWEEPS) {
- /* not needed in quick mode! */
- } else {
- /*
- * Determine if this set of
- * ranks should be skipped
- * entirely.
- */
- if (!param->skip_shadow_regs[sr]) {
- if (!rw_mgr_mem_calibrate_writes
- (rank_bgn, write_group,
- write_test_bgn)) {
- sr_failed = 1;
- if (!(gbl->
- phy_debug_mode_flags &
- PHY_DEBUG_SWEEP_ALL_GROUPS)) {
- return 0;
- }
- }
- }
- }
- }
- if (sr_failed != 0)
- group_failed = 1;
- }
- }
+ if (!rw_mgr_mem_calibrate_vfifo_end
+ (read_group, read_test_bgn)) {
+ group_failed = 1;
- if (group_failed == 0) {
- for (read_group = write_group *
- RW_MGR_MEM_IF_READ_DQS_WIDTH /
- RW_MGR_MEM_IF_WRITE_DQS_WIDTH,
- read_test_bgn = 0;
- read_group < (write_group + 1)
- * RW_MGR_MEM_IF_READ_DQS_WIDTH
- / RW_MGR_MEM_IF_WRITE_DQS_WIDTH &&
- group_failed == 0;
- read_group++, read_test_bgn +=
- RW_MGR_MEM_DQ_PER_READ_DQS) {
- if (!((STATIC_CALIB_STEPS) &
- CALIB_SKIP_WRITES)) {
- if (!rw_mgr_mem_calibrate_vfifo_end
- (read_group, read_test_bgn)) {
- group_failed = 1;
-
- if (!(gbl->phy_debug_mode_flags
- & PHY_DEBUG_SWEEP_ALL_GROUPS)) {
- return 0;
- }
+ if (!(gbl->phy_debug_mode_flags
+ & PHY_DEBUG_SWEEP_ALL_GROUPS)) {
+ return 0;
}
}
}
}
-
- if (group_failed != 0)
- failing_groups++;
}
- /*
- * USER If there are any failing groups then report
- * the failure.
- */
- if (failing_groups != 0)
- return 0;
+ if (group_failed != 0)
+ failing_groups++;
+ }
- /* Calibrate the LFIFO */
- if (!((STATIC_CALIB_STEPS) & CALIB_SKIP_LFIFO)) {
- /*
- * If we're skipping groups as part of debug,
- * don't calibrate LFIFO.
- */
- if (param->skip_groups == 0) {
- if (!rw_mgr_mem_calibrate_lfifo())
- return 0;
- }
+ /*
+ * USER If there are any failing groups then report
+ * the failure.
+ */
+ if (failing_groups != 0)
+ return 0;
+
+ /* Calibrate the LFIFO */
+ if (!((STATIC_CALIB_STEPS) & CALIB_SKIP_LFIFO)) {
+ /*
+ * If we're skipping groups as part of debug,
+ * don't calibrate LFIFO.
+ */
+ if (param->skip_groups == 0) {
+ if (!rw_mgr_mem_calibrate_lfifo())
+ return 0;
}
}
}