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ddr: altera: Internal scc_mgr_apply_group_all_out_delay_add() cleanup part 2

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Clean the DQS and OCT parts of the function, clean up the chopped
formatting strings in debug_cond() and slightly improve the code.
Zap group_bgn argument as it is used only in debug messages. Document
the function using kerneldoc. No functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Marek Vasut 2015-07-17 05:33:28 +02:00
parent 8eccde3ebb
commit 5cb1b50870
1 changed files with 24 additions and 26 deletions
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50
drivers/ddr/altera/sequencer.c
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@ -663,9 +663,14 @@ static void scc_mgr_apply_group_dqs_io_and_oct_out1(uint32_t write_group,
scc_mgr_load_dqs_for_write_group(write_group);
}
/* apply a delay to the entire output side: DQ, DM, DQS, OCT */
/**
* scc_mgr_apply_group_all_out_delay_add() - Apply a delay to the entire output side: DQ, DM, DQS, OCT
* @write_group: Write group
* @delay: Delay value
*
* Apply a delay to the entire output side: DQ, DM, DQS, OCT.
*/
static void scc_mgr_apply_group_all_out_delay_add(const u32 write_group,
const u32 group_bgn,
const u32 delay)
{
u32 i, new_delay;
@ -678,36 +683,30 @@ static void scc_mgr_apply_group_all_out_delay_add(const u32 write_group,
for (i = 0; i < RW_MGR_NUM_DM_PER_WRITE_GROUP; i++)
scc_mgr_load_dm(i);
/* dqs shift */
new_delay = READ_SCC_DQS_IO_OUT2_DELAY;
new_delay += delay;
/* DQS shift */
new_delay = READ_SCC_DQS_IO_OUT2_DELAY + delay;
if (new_delay > IO_IO_OUT2_DELAY_MAX) {
debug_cond(DLEVEL == 1, "%s:%d (%u, %u, %u) DQS: %u > %d => %d;"
" adding %u to OUT1\n", __func__, __LINE__,
write_group, group_bgn, delay, new_delay,
IO_IO_OUT2_DELAY_MAX, IO_IO_OUT2_DELAY_MAX,
debug_cond(DLEVEL == 1,
"%s:%d (%u, %u) DQS: %u > %d; adding %u to OUT1\n",
__func__, __LINE__, write_group, delay, new_delay,
IO_IO_OUT2_DELAY_MAX,
new_delay - IO_IO_OUT2_DELAY_MAX);
scc_mgr_set_dqs_out1_delay(new_delay -
IO_IO_OUT2_DELAY_MAX);
new_delay = IO_IO_OUT2_DELAY_MAX;
new_delay -= IO_IO_OUT2_DELAY_MAX;
scc_mgr_set_dqs_out1_delay(new_delay);
}
scc_mgr_load_dqs_io();
/* oct shift */
new_delay = READ_SCC_OCT_OUT2_DELAY;
new_delay += delay;
/* OCT shift */
new_delay = READ_SCC_OCT_OUT2_DELAY + delay;
if (new_delay > IO_IO_OUT2_DELAY_MAX) {
debug_cond(DLEVEL == 1, "%s:%d (%u, %u, %u) DQS: %u > %d => %d;"
" adding %u to OUT1\n", __func__, __LINE__,
write_group, group_bgn, delay, new_delay,
IO_IO_OUT2_DELAY_MAX, IO_IO_OUT2_DELAY_MAX,
debug_cond(DLEVEL == 1,
"%s:%d (%u, %u) DQS: %u > %d; adding %u to OUT1\n",
__func__, __LINE__, write_group, delay,
new_delay, IO_IO_OUT2_DELAY_MAX,
new_delay - IO_IO_OUT2_DELAY_MAX);
scc_mgr_set_oct_out1_delay(write_group, new_delay -
IO_IO_OUT2_DELAY_MAX);
new_delay = IO_IO_OUT2_DELAY_MAX;
new_delay -= IO_IO_OUT2_DELAY_MAX;
scc_mgr_set_oct_out1_delay(write_group, new_delay);
}
scc_mgr_load_dqs_for_write_group(write_group);
@ -724,8 +723,7 @@ static void scc_mgr_apply_group_all_out_delay_add_all_ranks(
for (r = 0; r < RW_MGR_MEM_NUMBER_OF_RANKS;
r += NUM_RANKS_PER_SHADOW_REG) {
scc_mgr_apply_group_all_out_delay_add(write_group,
group_bgn, delay);
scc_mgr_apply_group_all_out_delay_add(write_group, delay);
writel(0, &sdr_scc_mgr->update);
}
}