ddr: altera: sdram: Clean up sdram_calculate_size() part 2

Clean up coding style, mostly clean up comments, add kerneldoc.
Also, zap assignment of the "cs" variable, which is outright
dead code, so

ddr: altera: sdram: Clean up sdram_calculate_size() part 2

Clean up coding style, mostly clean up comments, add kerneldoc.
Also, zap assignment of the "cs" variable, which is outright
dead code, so just remove it.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up sdram_calculate_size() part 1

Pluck out all of the CONFIG_HPS_SDR_CTRLCFG_* macros. This change
makes sdram.c completely clear of these macros and allows removing
of the

ddr: altera: sdram: Clean up sdram_calculate_size() part 1

Pluck out all of the CONFIG_HPS_SDR_CTRLCFG_* macros. This change
makes sdram.c completely clear of these macros and allows removing
of the ugly include of sdram.h . The namespace is now a much nicer
place!

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Introduce socfpga_sdram_get_config()

Introduce socfpga_sdram_get_config() function implement in a board file,
which returns the socfpga_sdram_config structure. This is the last s

ddr: altera: sdram: Introduce socfpga_sdram_get_config()

Introduce socfpga_sdram_get_config() function implement in a board file,
which returns the socfpga_sdram_config structure. This is the last step
in cleaning up the socfpga_mmr_init_full(), but not the last step which
allows removing the inclusion of sdram.h from drivers/ddr/altera/sdram.c
thus far.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up sdram_mmr_init_full() part 8

Fix the return value so that standard errno return values can be used.

Signed-off-by: Marek Vasut <marex@denx.de>

ddr: altera: sdram: Clean up sdram_mmr_init_full() part 7

Add kerneldoc.

Signed-off-by: Marek Vasut <marex@denx.de>

ddr: altera: sdram: Clean up sdram_mmr_init_full() part 6

Pull out the block of register programming into a separate function.

Signed-off-by: Marek Vasut <marex@denx.de>

ddr: altera: sdram: Clean up sdram_mmr_init_full() part 5

Rework remaining two register setting functions such that they only
return the final register value. Move the register setting into the
bloc

ddr: altera: sdram: Clean up sdram_mmr_init_full() part 5

Rework remaining two register setting functions such that they only
return the final register value. Move the register setting into the
block of register I/O in sdram_mmr_init_full().

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up sdram_mmr_init_full() part 4

Merge sdr_set_*() functions which are just setting registers among
the sea of register setting in sdram_mmr_init_full(). There is no
need to

ddr: altera: sdram: Clean up sdram_mmr_init_full() part 4

Merge sdr_set_*() functions which are just setting registers among
the sea of register setting in sdram_mmr_init_full(). There is no
need to keep them separate this way, there is nothing special about
them.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up sdram_mmr_init_full() part 3

Pluck out the remaining CONFIG_HPS_SDR_CTRLCFG_ and put it into
the socfpga_sdram_config structure.

Signed-off-by: Marek Vasut <marex@denx.

ddr: altera: sdram: Clean up sdram_mmr_init_full() part 3

Pluck out the remaining CONFIG_HPS_SDR_CTRLCFG_ and put it into
the socfpga_sdram_config structure.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up sdram_mmr_init_full() part 2

Suck out all the CONFIG_HPS_SDR_CTRLCFG_* from sdram_mmr_init_full()
into the socfpga_sdram_config structure. There is still one ugly
macro

ddr: altera: sdram: Clean up sdram_mmr_init_full() part 2

Suck out all the CONFIG_HPS_SDR_CTRLCFG_* from sdram_mmr_init_full()
into the socfpga_sdram_config structure. There is still one ugly
macro left behind, but this will be taken care of in subsequent patch.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up sdram_mmr_init_full() part 1

Zap all the ad-hoc readbacks from the registers and other useless
and broken debug output. This is really not useful and is only
confusing.

ddr: altera: sdram: Clean up sdram_mmr_init_full() part 1

Zap all the ad-hoc readbacks from the registers and other useless
and broken debug output. This is really not useful and is only
confusing.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Introduce socfpga_sdram_config() structure

Introduce this seemingly massive structure, which holds required values
of all the registers of the SDRAM controller. The idea here is

ddr: altera: sdram: Introduce socfpga_sdram_config() structure

Introduce this seemingly massive structure, which holds required values
of all the registers of the SDRAM controller. The idea here is to avoid
including the sdram.h header file, which is full of ad-hoc macros that
polute the global namespace. Once the cleanup of sdram.c would be complete
and all registers would be loaded from this new socfpga_sdram_config, a
board file will only pass this structure into the sdram.c . This will
hide all the horrors generated by QTS in the board directory.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up set_sdr_mp_threshold()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed

ddr: altera: sdram: Clean up set_sdr_mp_threshold()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up set_sdr_mp_pacing()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed-of

ddr: altera: sdram: Clean up set_sdr_mp_pacing()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up set_sdr_mp_weight()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed-of

ddr: altera: sdram: Clean up set_sdr_mp_weight()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up set_sdr_fifo_cfg()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed-off

ddr: altera: sdram: Clean up set_sdr_fifo_cfg()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up set_sdr_static_cfg()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed-o

ddr: altera: sdram: Clean up set_sdr_static_cfg()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up set_sdr_addr_rw()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed-off-

ddr: altera: sdram: Clean up set_sdr_addr_rw()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up set_sdr_dram_timing*()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.
Merge s

ddr: altera: sdram: Clean up set_sdr_dram_timing*()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.
Merge set_sdr_dram_timing{1,2,3,4,lowpwr}() into single function
set_sdr_dram_timing() , since there's no point in keeping all this
stuff separate anymore.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up set_sdr_ctrlcfg()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.
The big plan

ddr: altera: sdram: Clean up set_sdr_ctrlcfg()

Get rid of the constant clrsetbits_le32(), instead prepare the whole
content of the register once and write it at the end of the function.
The big plan here is to remove all the CONFIG_HPS_SDR_ macros, hide
them in QTS compatibility layer in board implementation and pass only
a small structure into the driver.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up compute_errata_rows() part 2

Remove all parameters of this function, since they are only constants
passed in from another function, so make them local. Also, rename the

ddr: altera: sdram: Clean up compute_errata_rows() part 2

Remove all parameters of this function, since they are only constants
passed in from another function, so make them local. Also, rename the
function to get_errata_rows() as this is closer to what it does.

Signed-off-by: Marek Vasut <marex@denx.de>

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ddr: altera: sdram: Clean up compute_errata_rows() part 1

Clean up weird parenthesis and odd type casts from the function.
Fix comment style.

Signed-off-by: Marek Vasut <marex@denx.de>

ddr: altera: sdram: Switch to generic_hweight32()

Use generic function instead of CPU-specific one.

Signed-off-by: Marek Vasut <marex@denx.de>

ddr: altera: Clean up of delay_for_n_mem_clocks() part 5

Add kerneldoc.

Signed-off-by: Marek Vasut <marex@denx.de>

ddr: altera: Clean up of delay_for_n_mem_clocks() part 4

Simplify the loop code, optimizing compiler can deal with this.
No functional change.

Signed-off-by: Marek Vasut <marex@denx.de>