Introduce structure socfpga_sdram_io_config to wrap the IO configuration
values in board file. Introduce socfpga_get_sdram_io_config() function,
which returns this the structure. This is another step toward wrapping
the nasty QTS generated macros in board files and reducing the pollution
of the namespace.
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Actually convert the sequencer code to use socfpga_sdram_rw_mgr_config
instead of the RW_MGR_* macros. This is just an sed exercise here, no
manual coding needed.
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Introduce structure socfpga_sdram_rw_mgr_config to wrap the RW manager
configuration values in board file. Introduce a complementary function,
socfpga_get_sdram_rwmgr_config(), which returns this the structure.
This is another step toward wrapping the nasty QTS generated macros
in board files and reducing the pollution of the namespace.
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Introduce two wrapper functions, socfpga_get_seq_ac_init() and
socfpga_get_seq_inst_init() to avoid direct inclusion of the
sequencer_auto_ac_init.h and sequencer_auto_inst_init.h QTS
generated files. This reduces namespace pollution again.
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
These parameters are not used in the code, zap them and the
macros which are used by them as well.
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Move the files generated by QTS into the board directory, they should not
be part of the driver files at all.
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
This function is implementing the DDR calibration Stage 3 as
described in Altera EMI_RM 2015.05.04 . The main body of this
function is almost identical to Stage 1.3 (DQ/DQS centering)
for all but two flags -- use_read_test and update_fom. Convert
this function to call rw_mgr_mem_calibrate_dq_dqs_centering()
with the correct flags set to trim down the code duplication.
Moreover, reorder the remnants in the function a little and
convert the function to return either 0 or -EIO in case of
success and failure respectively, to match the common return
value convention.
Signed-off-by: Marek Vasut <marex@denx.de>
Clean up coding style, mostly broken multiline formatting strings
in debug output. Also clean up data types and constify where applicable.
Signed-off-by: Marek Vasut <marex@denx.de>
Fix data types and constify where applicable, fix broken multiline
debug strings and fix comments. No functional change.
Signed-off-by: Marek Vasut <marex@denx.de>
Fix the return value of the function to match common convention
where 0 means success and negative means error. Fix the return
values in case of an error to use errno.h codes.
Signed-off-by: Marek Vasut <marex@denx.de>
The read_group and write_group arguments are the same in all
cases when this function is invoked, just merge them into one
rw_group argument. Also, clean up the function argument data
types and constify them.
Signed-off-by: Marek Vasut <marex@denx.de>
The search_stop_check() always resets the bit_chk to a new value,
so bit_chk will never survive between search_left_edge() and
search_right_edge() invocation. There is thus no need to pass
it into these functions, so make bit_chk local to them.
Signed-off-by: Marek Vasut <marex@denx.de>
Factor out center_dq_windows(), which is common code between
stage 2 and stage 3 of the calibration again and cater for
the minor differences.
Signed-off-by: Marek Vasut <marex@denx.de>
Factor out the get_window_mid_index() for finding the best DQ
window centering. This is again code common to two stages, so
pull it out.
Signed-off-by: Marek Vasut <marex@denx.de>
First of all, don't break strings in the debug_cond() calls across
multiple lines. Next, zap a couple of really odd casts in the code.
Finally, make i into a signed variable, so it is possible to avoid
constructs of the form:
for (i = FOO;; i--) { <code>; if (i == 0) break; }.
Signed-off-by: Marek Vasut <marex@denx.de>
Factor out common code from search_left_edge() and search_right_edge()
which checks whether searching for the window edge should stop. The
code is almost identical, so pull it into separate function and cater
for the minor differences.
Signed-off-by: Marek Vasut <marex@denx.de>
Factor out common code from rw_mgr_mem_calibrate_writes_center()
and rw_mgr_mem_calibrate_vfifo_center() for searching for the
left edge of the window. The code is almost identical, so pull
it into separate function and cater for the minor differences.
Signed-off-by: Marek Vasut <marex@denx.de>
Factor out common code from rw_mgr_mem_calibrate_writes_center()
and rw_mgr_mem_calibrate_vfifo_center() for searching for the
right edge of the window. The code is almost identical, so pull
it into separate function and cater for the minor differences.
Signed-off-by: Marek Vasut <marex@denx.de>
Reorder the content of the function a little and fix the comments
so they at least become full sentences. Constify function args.
Fix the return value to match the common convention of 0 meaning
success.
Signed-off-by: Marek Vasut <marex@denx.de>
The C language has signed types, so make use of them. Fix this
obscene loop, which tries to do away with unsigned type, but
just makes the code more cryptic.
Signed-off-by: Marek Vasut <marex@denx.de>
Clean up the debug output handling at the end of the function
and factor out common function call from the condition.
Signed-off-by: Marek Vasut <marex@denx.de>
Implement common sdr_find_phase_delay() function and convert all
places which use such code to this unified function. No functional
change to the code.
Signed-off-by: Marek Vasut <marex@denx.de>
If d != 0 after sdr_working_phase() finishes, the else branch
of the condition has no impact on anything at all, since work_end
was already set independently of the value of "d" . Zap this
useless code.
Signed-off-by: Marek Vasut <marex@denx.de>
Fix data types, constify where applicable, fix comments and debug
strings. In case enough failing reads are detected, just return
right away instead of breaking from the loop. This lets us make
the error handling at the end much simpler.
Signed-off-by: Marek Vasut <marex@denx.de>
Pluck out all this VFIFO value counting, which turns out to be
completely unused. Thus, remove it to simplify the code.
Signed-off-by: Marek Vasut <marex@denx.de>
