The "d" variable is set to 0 in sdr_backup_phase() and is not used
at all in sdr_nonworking_phase(). Make it local and zap it respectively.
Signed-off-by: Marek Vasut <marex@denx.de>
Wrap dtaps_per_ptap into the sdr_working_phase() function to trim
down the number of params. It's a constant too.
Signed-off-by: Marek Vasut <marex@denx.de>
It is now clear that the max_working_cnt variable is totally unused.
Zap the variable and zap other variables which became unused due to
this change too.
Signed-off-by: Marek Vasut <marex@denx.de>
Pull out the loop for eaching working/non-working DQS enable phase
into a separate function, as this is mostly common code between.
Clean up sdr_working_phase() and sdr_nonworking_phase() while switching
these two functions to the common sdr_find_phase().
Signed-off-by: Marek Vasut <marex@denx.de>
Get rid of found_{begin,end} variables. Instead of breaking out
through all of the loops, just return when the begin/end of the
window is found and be done with it. Also clean up the trailing
conditional expression, which is now much easier.
Signed-off-by: Marek Vasut <marex@denx.de>
Fix the arguments passed to these functions. The bit_chk is
overriden by rw_mgr_mem_calibrate_read_test_all_ranks() which
is invoked by all three sdr_*_phase() functions, so just make
this into local variable.
Signed-off-by: Marek Vasut <marex@denx.de>
Fix the arguments passed to these functions. The grp argument
does not have to be passed via reference, it's never modified
within either of those functions, so make it into a value.
Signed-off-by: Marek Vasut <marex@denx.de>
Reorder the end of the function a little by moving the conditional
debug output around a little. Rename the function from _centre() to
_center(). Document the function in kerneldoc.
Signed-off-by: Marek Vasut <marex@denx.de>
This function is a treasure trove of ad-hoc iterative
implementations of mathematical functions. Replace all
of those with their non-iterative counterpart.
Signed-off-by: Marek Vasut <marex@denx.de>
Clean up the arguments of this function. Most of the pointers
passed into the function are either not needed at all, or can
be passed as value instead of reference. Also fix the broken
multiline debug strings. No functional change.
Signed-off-by: Marek Vasut <marex@denx.de>
This function is only invoked from rw_mgr_mem_calibrate_dqs_enable_calibration()
and at this point, it is just one level of indirection, so wrap the
rw_mgr_mem_calibrate_vfifo_find_dqs_en_phase_sweep_dq_in_delay() into
rw_mgr_mem_calibrate_dqs_enable_calibration() to get rid of the level
of indirection.
Signed-off-by: Marek Vasut <marex@denx.de>
Replace at least one of the loops in this function with call of a
standard function call instead of the ad-hoc implementation. The
other one cannot be replaced, since the delay is incremented for
each group.
Signed-off-by: Marek Vasut <marex@denx.de>
The read_group and write_group params have the same value for all (one)
invocations of this function, just merge them into a single param.
Signed-off-by: Marek Vasut <marex@denx.de>
Start cleaning up this function. In the first part, just fix
the incorrectly broken debug strings and fix return value to
respect the common convention.
Signed-off-by: Marek Vasut <marex@denx.de>
Rework this function such that the code is more readable. Zap
unused parameter "num_tries" while at it. Also wrap parameter
"bit_chk" into this function as it's value is not used outside.
Finally, fix the return value from this function to match the
common expectation, where 0 means success.
Signed-off-by: Marek Vasut <marex@denx.de>
This function is called from one single place and it's sole purpose
is to call one single function with slightly modified arguments.
Zap this function to skip this useless intermediate step.
Signed-off-by: Marek Vasut <marex@denx.de>
Just extract this piece of functionality into separate function
to make the code better separated. This matches the division in
Altera documentation, Altera EMI_RM 2015.05.04 , section 1, the
UniPHY Calibration Stages.
Signed-off-by: Marek Vasut <marex@denx.de>
Just extract this piece of functionality into separate function
to make the code better separated. This matches the division in
Altera documentation, Altera EMI_RM 2015.05.04 , section 1, the
UniPHY Calibration Stages.
Signed-off-by: Marek Vasut <marex@denx.de>
Just extract this piece of functionality into separate function
to make the code better separated. This matches the division in
Altera documentation, Altera EMI_RM 2015.05.04 , section 1, the
UniPHY Calibration Stages.
Signed-off-by: Marek Vasut <marex@denx.de>
This is kind of microseries-within-series indent cleanup.
It is clear that the read_group and write_group variables
have the same value, to just make them into one variable
called rw_group. While doing this, constify the variables
as they are constant.
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>
This is kind of microseries-within-series indent cleanup.
This patch fixes the broken formatting strings in debug_cond()
invocations.
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>
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>
This is kind of microseries-within-series indent cleanup.
This patch just tweaks the indentation so it is visible
what to do with the grp_calibrated variable.
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>
This is kind of microseries-within-series indent cleanup.
This patch just tweaks the indentation so it is visible
what is supposed to go where.
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>
This patch just adds an expanded documentation header to the
aforementioned function. This is needed to make it easier to
match the purpose of this function with the documentation.
No functional change.
Signed-off-by: Marek Vasut <marex@denx.de>
This is kind of microseries-within-series indent cleanup.
Rework the code for the the middle-loop of the mega-loop
this time and deal with the group_failed variable. Instead
of checking if the group failed in the previous calibration
part, just jump to the end of the loop if calibration did
fail and increment the counter. This shaves away one more
level of indent while making the code slightly more readable.
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>
This is kind of microseries-within-series indent cleanup.
Rework the code for the last loop within the mega-loop
to make it actually readable and not an insane cryptic pile
of indent failure.
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>
This is kind of microseries-within-series indent cleanup.
Rework the code for the third loop within the middle-loop
of the mega-loop to make it actually readable and not an
insane cryptic pile of indent failure.
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>
This is kind of microseries-within-series indent cleanup.
Rework the code for the second loop within the middle-loop
of the mega-loop to make it actually readable and not an
insane cryptic pile of indent failure.
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>
This is kind of microseries-within-series indent cleanup.
Rework the code for the first loop within the middle-loop
of the mega-loop to make it actually readable and not an
insane cryptic pile of indent failure.
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>
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>
Perform minor coding style cleanup of the mem_skip_calibrate() function,
clean up comments and add kerneldoc. No functional change.
Signed-off-by: Marek Vasut <marex@denx.de>
Turn the big inner if (RW_MGR_MEM_NUMBER_OF_RANKS == ...) conditional
into a switch {} statement instead. No functional change.
Signed-off-by: Marek Vasut <marex@denx.de>
First, invert the logic of the if (odt_mode == ...) conditional to make
the OFF mode harder to miss. It is a short piece of code right at the
end, so move it up.
Also, clean up data types and constify where applicable and clean up
the cs_and_odt_mask assignment. No functional change.
Signed-off-by: Marek Vasut <marex@denx.de>
Clean mem_config() function. First, reorder the math done in the
function such that WLAT and RLAT computation is together. Then,
scrap contradictory comments which do not match the result of the
math at all. Next, extract the mem_precharge_and_activate() call
from the end of the function as it is completely unrelated here.
Finally, rename the function to mem_init_latency().
Signed-off-by: Marek Vasut <marex@denx.de>
Clean the function up slightly by using clrsetbits_le32() to flip
bits in registers instead of cryptic bitmasks. Zap condition checking
for PHY_DEBUG_IN_DEBUG_MODE flag, which is never set. Split the
calibration report into separate debug_mem_calibrate() function.
Signed-off-by: Marek Vasut <marex@denx.de>
Init both structures with zeroes and zap all those zeroing shenanigans
further down in the sdram_calibration_full().
Signed-off-by: Marek Vasut <marex@denx.de>
Clean the function up by getting rid of all the insane XOR-leftshift
combos when assembling register values. While at it, remove all the
ad-hoc variables necessary for this XOR-leftshift voodoo. Finally,
get rid of the iterative division implementation of two constants
and replace it with a DIV_ROUND_UP() macro :-)
Signed-off-by: Marek Vasut <marex@denx.de>
Contemporary CPUs can perform division just fine, use this
functionality and zap another implementation of iterative
division :-)
Signed-off-by: Marek Vasut <marex@denx.de>
