Commit graph

159 commits

Author SHA1 Message Date
Marek Vasut
bce24efa1d ddr: altera: Internal rw_mgr_mem_calibrate_vfifo() cleanup part 1
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>
2015-08-08 14:14:16 +02:00
Marek Vasut
8e9d7d04b0 ddr: altera: Minor clean up of rw_mgr_mem_initialize()
Add kerneldoc and do a minor comment cleanup. No functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:16 +02:00
Marek Vasut
3589fbfbc3 ddr: altera: Internal mem_calibrate() cleanup part 6
Add kerneldoc to this function.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:16 +02:00
Marek Vasut
c452dcd0b7 ddr: altera: Internal mem_calibrate() cleanup part 5
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>
2015-08-08 14:14:16 +02:00
Marek Vasut
c50ae30341 ddr: altera: Internal mem_calibrate() cleanup part 4
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>
2015-08-08 14:14:16 +02:00
Marek Vasut
8213609e68 ddr: altera: Internal mem_calibrate() cleanup part 3
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>
2015-08-08 14:14:15 +02:00
Marek Vasut
4ac2161014 ddr: altera: Internal mem_calibrate() cleanup part 2
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>
2015-08-08 14:14:15 +02:00
Marek Vasut
33c42bb88c ddr: altera: Internal mem_calibrate() cleanup part 1
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>
2015-08-08 14:14:15 +02:00
Marek Vasut
722c968570 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>
2015-08-08 14:14:15 +02:00
Marek Vasut
51cea0b6c0 ddr: altera: Minor clean up of mem_skip_calibrate()
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>
2015-08-08 14:14:15 +02:00
Marek Vasut
080bf64ef1 ddr: altera: Clean up set_rank_and_odt_mask() part 3
Clean up comments and add kerneldoc.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:15 +02:00
Marek Vasut
287cdf6be7 ddr: altera: Clean up set_rank_and_odt_mask() part 2
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>
2015-08-08 14:14:15 +02:00
Marek Vasut
b2dfd100bc ddr: altera: Clean up set_rank_and_odt_mask() part 1
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>
2015-08-08 14:14:15 +02:00
Marek Vasut
4b0ac26a15 ddr: altera: Clean up mem_precharge_and_activate()
Perform minor cleanup of this function, fix datatype and add kerneldoc.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:15 +02:00
Marek Vasut
16502a0b2b ddr: altera: Clean up mem_config()
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>
2015-08-08 14:14:14 +02:00
Marek Vasut
7c89c2d9ce ddr: altera: Clean up phy_mgr_initialize()
Zap the cryptic casts and rework the code into a slightly more
readable form. No functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:14 +02:00
Marek Vasut
23a040c047 ddr: altera: Clean up run_mem_calibrate()
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>
2015-08-08 14:14:14 +02:00
Marek Vasut
9fa9c90e70 ddr: altera: Rename initialize() to phy_mgr_initialize()
Just perform the rename to make the name more descriptive,
no functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:14 +02:00
Marek Vasut
84e0b0cf2b ddr: altera: Init my_param and my_gbl
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>
2015-08-08 14:14:14 +02:00
Marek Vasut
880e46f2d3 ddr: altera: Rework initialize_tracking()
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>
2015-08-08 14:14:14 +02:00
Marek Vasut
d32badbd80 ddr: altera: Fix ad-hoc iterative division implementation
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>
2015-08-08 14:14:14 +02:00
Marek Vasut
f936f94f80 ddr: altera: Minor clean up of set_jump_as_return()
Add kerneldoc and do a minor comment cleanup.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:14 +02:00
Marek Vasut
ecd2334a17 ddr: altera: Factor out common code
Factor out almost common code from rw_mgr_mem_handoff() and
rw_mgr_mem_initialize() into separate rw_mgr_mem_load_user().
No functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:14 +02:00
Marek Vasut
944fe7193e ddr: altera: Factor out instruction loading from rw_mgr_mem_initialize()
Pull the duplicate code out into a separate function.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:13 +02:00
Marek Vasut
f51a7d3592 ddr: altera: Clean up scc_mgr_apply_group_all_out_delay_add_all_ranks()
Zap unused group_bgn parameter, fix and constify data types.
Document in kerneldoc. No functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:13 +02:00
Marek Vasut
5cb1b50870 ddr: altera: Internal scc_mgr_apply_group_all_out_delay_add() cleanup part 2
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>
2015-08-08 14:14:13 +02:00
Marek Vasut
8eccde3ebb ddr: altera: Internal scc_mgr_apply_group_all_out_delay_add() cleanup part 1
Apparently, in case of the DQ and DM, the value if the new_delay variable
is calculated, but the value is not used. Zap the entire code which does
calculate the value.

It is not clear to me whether or not the code is doing the right thing
in the first place. Right now, it calls scc_mgr_load_dq() and
scc_mgr_load_dm() respectively, but I suspect it might need to call
scc_mgr_apply_group_dq_out1_delay() and scc_mgr_apply_group_dm_out1_delay()
instead. This is something Altera must investigate.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:13 +02:00
Marek Vasut
d41ea93a33 ddr: altera: Clean up scc_mgr_zero_group()
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>
2015-08-08 14:14:13 +02:00
Marek Vasut
f42af35bdc ddr: altera: Clean up scc_mgr_zero_all()
Add kerneldoc, clean up datatypes and fix minor indentation issue.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:13 +02:00
Marek Vasut
fa5d821b6b ddr: altera: Extract scc_mgr_set_hhp_extras()
Move scc_mgr_set_hhp_extras() out of scc_set_bypass_mode() as it
has nothing to do in there. Instead, invoke it from mem_calibrate()
just before invoking scc_set_bypass_mode().

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:13 +02:00
Marek Vasut
37a37ca7f8 ddr: altera: Clean up scc_mgr_set_hhp_extras()
Minor coding style cleanup for this function. Furthermore, move
ad-hoc debug_cond() calls from the only location from where this
function is invoked into this actual function.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:13 +02:00
Marek Vasut
3267524960 ddr: altera: Clean up scc_mgr_*_delay() args
Zap args which are not used by these functions, in particular
the write_group is often passed, but unused.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:13 +02:00
Marek Vasut
300c2e6263 ddr: altera: Clean up scc_mgr_apply_group_dq_out1_delay()
Remove unused write_group and group_bgn argument from this function.
Document the function using kerneldoc.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:12 +02:00
Marek Vasut
5be355c102 ddr: altera: Clean up scc_mgr_set_oct_out1_delay()
Make this function more readable, no functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:12 +02:00
Marek Vasut
c5c5f5378f ddr: altera: Clean up scc_set_bypass_mode()
The mode argument of this function is not used at all, zap it.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:12 +02:00
Marek Vasut
5e83789634 ddr: altera: Clean up scc_mgr_load_dqs_for_write_group()
Make this function more readable, no functional change. Also, zap the
forward declaration, which is no longer needed.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:12 +02:00
Marek Vasut
0b69b807d8 ddr: altera: Implement universal scc_mgr_set_all_ranks()
Implement universal scc_mgr_set_all_ranks() function and convert
various ad-hoc implementations of similar functionality to use
this single function. Document the function in kerneldoc.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:12 +02:00
Marek Vasut
162d60ef73 ddr: altera: Shuffle around scc_mgr_set_*all_ranks()
Shuffle the code around a bit, but without any functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:12 +02:00
Marek Vasut
e893f4dc2f ddr: altera: Clean up scc_mgr_initialize()
Clean up the comments and add kerneldoc. No functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:12 +02:00
Marek Vasut
c76976d98f ddr: altera: Implement universal scc manager config function
Implement unified scc_mgr_set() function and convert all those
9 scc_mgr_set_*() ad-hoc functions to call this one function.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:12 +02:00
Marek Vasut
5ff825b853 ddr: altera: Reorder scc manager functions
This patch just puts functions which look similar next to each
other, so they can be sorted out. No functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:12 +02:00
Marek Vasut
07aee5bd98 ddr: altera: Clean up scc manager function args
Clean up the unused args of the functions used to configure the
SCC manager.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:11 +02:00
Marek Vasut
2c0d2d9c40 ddr: altera: Clean up reg_file_set*()
Turn the insides of these functions into trivial clrsetbits_le32()
and fix the data type of their argument to reflect it's actual size.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:11 +02:00
Marek Vasut
2ca151f86c ddr: altera: Clean up initialize_hps_phy()
Add brief kerneldoc.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:11 +02:00
Marek Vasut
9c1ab2ca19 ddr: altera: Clean up initialize_reg_file()
Add brief kerneldoc.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:11 +02:00
Marek Vasut
bb06434bb2 ddr: altera: Clean up hc_initialize_rom_data()
Clean the function up, fix data types, add kerneldoc.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:11 +02:00
Marek Vasut
1273dd9ea3 ddr: altera: Massage addr into I/O accessors
Get rid of invocations of this sort:
  addr = (u32)&base->reg;
  writel(val, addr);

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:11 +02:00
Marek Vasut
6cb9f16781 ddr: altera: Stop using SDR_CTRLGRP_ADDRESS directly
Use the proper structure which describes these registers,
especially since this is already in place.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:11 +02:00
Marek Vasut
17fdc9167f ddr: altera: Wrap SOCFPGA_SDR_ADDRESS into SDR_PHYGRP.*ADDRESS
Just trim down the constant SOCFPGA_SDR_ADDRESS + SDR_PHYGRP.*ADDRESS
in the code.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:11 +02:00
Marek Vasut
c4815f7671 ddr: altera: Pluck out remaining sdr_get_addr() calls
Remove the remaining invocations of sdr_get_addr() and the function
itself. This makes the code a bit less cryptic.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:11 +02:00
Marek Vasut
1bc6f14a61 ddr: altera: Dissolve invocation of sdr_get_addr(&sdr_mgr_.*->.*)
Instead of this indirection, just adjust the register pointer and
directly use the register base address.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:10 +02:00
Marek Vasut
6afb4fe2a0 ddr: altera: Dissolve invocation of sdr_get_addr(&sdr_rw_load.*->.*)
Instead of this indirection, just adjust the register pointer and
directly use the register base address.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:10 +02:00
Marek Vasut
e79025a774 ddr: altera: Dissolve invocation of sdr_get_addr(&sdr_scc_mgr->.*)
Instead of this indirection, just adjust the register pointer and
directly use the register base address.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:10 +02:00
Marek Vasut
a1c654a893 ddr: altera: Dissolve invocation of sdr_get_addr(&sdr_reg_file->.*)
Instead of this indirection, just adjust the register pointer and
directly use the register base address.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:10 +02:00
Marek Vasut
a4bfa463e0 ddr: altera: Zap invocation of sdr_get_addr((u32 *)BASE_RW_MGR)"
Instead of this indirection, just adjust the register pointer and
directly use the register base address.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:10 +02:00
Marek Vasut
23f62b36da ddr: altera: Clean up ugly casts in sdram_calibration_full()
Use the correct formating string in those debug_cond() invocations
and zap those unnecessary ugly casts.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:10 +02:00
Marek Vasut
963bca63b6 ddr: altera: Minor indent fix in set_rank_and_odt_mask()
Fix the position of the } else { statement to make it correctly
indented.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:10 +02:00
Marek Vasut
7ac40d25cf ddr: altera: Fix debug message format in sequencer
The debug messages missed proper newlines and/or spaces in them.
Fix the formatting.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Cc: Tom Rini <trini@konsulko.com>
2015-08-08 14:14:06 +02:00
Dinh Nguyen
3da428595e driver/ddr/altera: Add the sdram calibration portion
This patch adds the DDR calibration portion of the Altera SDRAM driver.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
2015-08-08 14:14:05 +02:00