[Keymap] clean up helix:five_rows keymap (#10866)

* Makes the OLED driver used by the helix:five_rows keymap switchable.

* use TOP/drivers/oled/oled_driver.c
  `make HELIX=stdole helix:five_rows`
* use helix/local_drivers/ssd1306.c
  `make HELIX=oled helix:five_rows`

* Separated the OLED related code from keymap.c and moved it to oled_display.c.

* scan rate without OLED
  * make HELIX=verbose,dispoff,scan helix/rev2:five_rows
    use Helix original code
    text   data    bss    dec    hex   filename
    18880    58    235  19173   4ae5   .build/helix_rev2_five_rows.elf
    matrix scan frequency: 1590

  * make HELIX=verbose,dispoff,scan,sc helix/rev2:five_rows
    use split_common code
    text   data    bss    dec    hex   filename
    18554    40    231  18825   4989   .build/helix_rev2_five_rows.elf
    matrix scan frequency: 1202

* scan rate with helix/local_drivers/ssd1306.c
  * make HELIX=verbose,dispoff,scan,oled helix/rev2:five_rows
    use Helix original code
    text   data    bss    dec    hex   filename
    24048   196    342  24586   600a   .build/helix_rev2_five_rows.elf
    matrix scan frequency: 739

  * make HELIX=verbose,dispoff,scan,sc,oled helix/rev2:five_rows
    use split_common code
    text   data    bss    dec    hex   filename
    23750   176    338  24264   5ec8   .build/helix_rev2_five_rows.elf
    matrix scan frequency: 642

* scan rate with drivers/oled/oled_driver.c
  * make HELIX=verbose,dispoff,scan,stdole helix/rev2:five_rows
    use Helix original code
    text   data    bss    dec    hex   filename
    24590   210    798  25598   63fe   .build/helix_rev2_five_rows.elf
    matrix scan frequency: 293

  * make HELIX=verbose,dispoff,scan,sc,stdole helix/rev2:five_rows
    use split_common code
    text   data    bss    dec    hex   filename
    24290   190    794  25274   62ba   .build/helix_rev2_five_rows.elf
    matrix scan frequency: 277

* clean up helix/rev2/keymaps/five_rows/keymap.c

* update five_rows/oled_display.c

* update helix/rev2/keymaps/five_rows/keymap.c: remove LAYOUT_kc()

* Ported the keymap from helix/rev2:five_rows to helix/rev3_5rows:five_rows.

* update five_rows/oled_display.c

* add License comment

1 files changed, 45 insertions, 3 deletions

diff --git a/keyboards/helix/rev2/keymaps/five_rows/rules.mk b/keyboards/helix/rev2/keymaps/five_rows/rules.mk
index 8c4239deb9..83cdb30d0c 100644
--- a/keyboards/helix/rev2/keymaps/five_rows/rules.mk
+++ b/keyboards/helix/rev2/keymaps/five_rows/rules.mk
@@ -25,9 +25,51 @@ HELIX_ROWS = 5              # Helix Rows is 4 or 5
 # IOS_DEVICE_ENABLE = no      # connect to IOS device (iPad,iPhone)
 
 ifneq ($(strip $(HELIX)),)
-  ifeq ($(findstring console,$(HELIX)), console)
-    CONSOLE_ENABLE = yes
-  endif
+  define KEYMAP_OPTION_PARSE
+    # $xinfo .$1.x #debug
+    # parse  'dispoff', 'consle', 'stdole', 'oled', 'sc'
+    ifeq ($(strip $1),dispoff)
+        OLED_ENABLE = no
+        OLED_DRIVER_ENABLE = no
+        LED_BACK_ENABLE = no
+        LED_UNDERGLOW_ENABLE = no
+    endif
+    ifeq ($(strip $1),console)
+        CONSOLE_ENABLE = yes
+    endif
+    ifeq ($(strip $1),stdole)
+        ## make HELIX=stdole helix:five_rows -- use TOP/drivers/oled/oled_driver.c
+        OLED_ENABLE = new
+    endif
+    ifeq ($(strip $1),oled)
+         ## make HELIX=oled helix:five_rows -- use helix/local_drivers/ssd1306.c
+        OLED_ENABLE = yes
+    endif
+    ifeq ($(strip $1),back)
+        LED_BACK_ENABLE = yes
+    endif
+    ifeq ($(strip $1),sc)
+        SPLIT_KEYBOARD = yes
+    endif
+  endef # end of KEYMAP_OPTION_PARSE
+
+  COMMA=,
+  $(eval $(foreach A_OPTION_NAME,$(subst $(COMMA), ,$(HELIX)),  \
+      $(call KEYMAP_OPTION_PARSE,$(A_OPTION_NAME))))
+endif
+
+ifeq ($(strip $(OLED_ENABLE)), new)
+    OLED_DRIVER_ENABLE = yes
+    OLED_ENABLE = no
+    SRC += oled_display.c
+    ifeq ($(strip $(LOCAL_GLCDFONT)), yes)
+       OPT_DEFS += -DOLED_FONT_H=\<helixfont.h\>
+    else
+       OPT_DEFS += -DOLED_FONT_H=\"common/glcdfont.c\"
+    endif
+endif
+ifeq ($(strip $(OLED_ENABLE)), yes)
+    SRC += oled_display.c
 endif
 
 # convert Helix-specific options (that represent combinations of standard options)