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ddr: altera: Clean up scc_mgr_zero_group()

Browse source 
First, zap unused argument of the function. Next, clean up
the data types, constify where applicable, clean up comments
and add kerneldoc.

Signed-off-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Marek Vasut 2015-07-20 08:41:04 +02:00
parent f42af35bdc
commit d41ea93a33
1 changed files with 21 additions and 18 deletions
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39
drivers/ddr/altera/sequencer.c
View file

@ -565,43 +565,47 @@ static void scc_mgr_load_dqs_for_write_group(const u32 write_group)
writel(base + i, &sdr_scc_mgr->dqs_ena);
}
static void scc_mgr_zero_group(uint32_t write_group, uint32_t test_begin,
int32_t out_only)
/**
* scc_mgr_zero_group() - Zero all configs for a group
*
* Zero DQ, DM, DQS and OCT configs for a group.
*/
static void scc_mgr_zero_group(const u32 write_group, const int out_only)
{
uint32_t i, r;
int i, r;
for (r = 0; r < RW_MGR_MEM_NUMBER_OF_RANKS; r +=
NUM_RANKS_PER_SHADOW_REG) {
/* Zero all DQ config settings */
for (r = 0; r < RW_MGR_MEM_NUMBER_OF_RANKS;
r += NUM_RANKS_PER_SHADOW_REG) {
/* Zero all DQ config settings. */
for (i = 0; i < RW_MGR_MEM_DQ_PER_WRITE_DQS; i++) {
scc_mgr_set_dq_out1_delay(i, 0);
if (!out_only)
scc_mgr_set_dq_in_delay(i, 0);
}
/* multicast to all DQ enables */
/* Multicast to all DQ enables. */
writel(0xff, &sdr_scc_mgr->dq_ena);
/* Zero all DM config settings */
for (i = 0; i < RW_MGR_NUM_DM_PER_WRITE_GROUP; i++) {
/* Zero all DM config settings. */
for (i = 0; i < RW_MGR_NUM_DM_PER_WRITE_GROUP; i++)
scc_mgr_set_dm_out1_delay(i, 0);
}
/* multicast to all DM enables */
/* Multicast to all DM enables. */
writel(0xff, &sdr_scc_mgr->dm_ena);
/* zero all DQS io settings */
/* Zero all DQS IO settings. */
if (!out_only)
scc_mgr_set_dqs_io_in_delay(0);
/* av/cv don't have out2 */
/* Arria V/Cyclone V don't have out2. */
scc_mgr_set_dqs_out1_delay(IO_DQS_OUT_RESERVE);
scc_mgr_set_oct_out1_delay(write_group, IO_DQS_OUT_RESERVE);
scc_mgr_load_dqs_for_write_group(write_group);
/* multicast to all DQS IO enables (only 1) */
/* Multicast to all DQS IO enables (only 1 in total). */
writel(0, &sdr_scc_mgr->dqs_io_ena);
/* hit update to zero everything */
/* Hit update to zero everything. */
writel(0, &sdr_scc_mgr->update);
}
}
@ -2344,7 +2348,7 @@ static uint32_t rw_mgr_mem_calibrate_vfifo(uint32_t read_group,
* first case).
*/
if (d > 2)
scc_mgr_zero_group(write_group, write_test_bgn, 1);
scc_mgr_zero_group(write_group, 1);
return 1;
}
@ -3368,8 +3372,7 @@ static uint32_t mem_calibrate(void)
writel(write_group, SDR_PHYGRP_SCCGRP_ADDRESS |
SCC_MGR_GROUP_COUNTER_OFFSET);
scc_mgr_zero_group(write_group, write_test_bgn,
0);
scc_mgr_zero_group(write_group, 0);
for (read_group = write_group *
RW_MGR_MEM_IF_READ_DQS_WIDTH /