wifi: rtlwifi: remove unreachable code in rtl92d_dm_check_edca_turbo()

Since '!(0x5ea42b & 0xffff0000)' is always false, remove unreachable
block in 'rtl92d_dm_check_edca_turbo()' and convert EDCA limits to
constant variables. Compile tested only.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20231003043318.11370-1-dmantipov@yandex.ru

rtlwifi: rtl8192de: fix ofdm power compensation

ofdm_index[] is used to indicate how many power compensation is needed to
current thermal value. For internal PA module or 2.4G band, the min_index
is different from other cases.

This issue originally is reported by Dan. He found the size of ofdm_index[]
is 2, but access index 'i' may be equal to 2 if 'rf' is 2 in case of
'is2t'.

In fact, the chunk of code is added to wrong place, so move it back to
proper place, and then power compensation and buffer overflow are fixed.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20201207031903.7599-1-pkshih@realtek.com

rtlwifi: rtl8192de: Rename RT_TRACE to rtl_dbg

Change the misleading macro name to one that is more descriptive for
rtl8192de. Changes suggested by ckeckpatch.pl have been made.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200723204244.24457-9-Larry.Finger@lwfinger.net

rtlwifi: 8192de: use le32 to access cckswing tables

The cckswing tables cckswing_table_ch1ch13 and cckswing_table_ch14 are
u8 array in little-endian order. To compare four u8 value with register
u32 value, cast the value to cpu order.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

rtlwifi: 8192de: Fix used uninitialized variables in power tracking

ofdm_index_old[] is the index of ofdmswing_table[], and used to indicate
initial value of ROFDM0_X{A,B}TXIQIMBALANCE in rtl8192de_phy_reg_2tarray[]
table, and the initial value is corresponding to calibration thermal value
written in efuse, namely rtlefuse->eeprom_thermalmeter. Then, local
variable ofdm_index_old[] save to rtlpriv->dm.ofdm_index[] for operational
use.

If thermal value (temperature) is increasing, output TX power is lower.
So, we calculate the delta between current and calibration thermal value,
then add power to yield expected and the same output TX power.

Thus, ofdm_index[] should be initialized as rtlpriv->dm.ofdm_index[], and
shift to proper index depends on delta of thermal value. Then, new power
value ofdmswing_table[ofdm_index[]] is written to register.

Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

rtlwifi: 8192de: make tables to be 'static const'

This can reduce code size 264 bytes, and make code more readable.

text data bss dec hex filename
Before: 13586 0 16 13602 3522 rtl8192de/dm.o
After: 13322 0 16 13338 341a rtl8192de/dm.o

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

rtlwifi: 8192de: Reduce indentation and fix coding style

This commit doesn't change logic at all. Since indentation is lower, the
wrapped statements can be put in single line that will become more
readable.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

rtlwifi: rtl8188de: Remove CamelCase variables

If a macro is in CamelCase, it it converted to upper case. Variables
and routine names are converted to lower case.

The following checkpatch exceptions are also fixed:

CHECK: No space is necessary after a cast
#211: FILE: drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.c:109:
+ (u8 *) (&rfstate));

CHECK: No space is necessary after a cast
#241: FILE: drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.c:277:
+ ptmp_byte = (u8 *) (&regtoset) + index;

Note that not all checkpatch exceptions are addressed. Those will be
handled in later patches.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

rtlwifi: rtl8192de: Replace old-style license information

The traditional license information is replaced by the SPDX form. There
are no code changes.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

rtlwifi: rtl8192de: Remove address of Free Software Foundation

Since this driver was added to the kernel, the checkpatch script was
modified to request that the address of the FSF not be included.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

rtlwifi: rtl818x: Move drivers into new realtek directory

Now that a new mac80211-based driver for Realtek devices has been submitted,
it is time to reorganize the directories. Rather than having directories
rtlwifi and rtl818x be in drivers/net/wireless/, they will now be in
drivers/net/wireless/realtek/. This change simplifies the directory
structure, but does not result in any configuration changes that are
visable to the user.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>