[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, 200 insertions, 0 deletions

diff --git a/keyboards/helix/rev3_5rows/keymaps/five_rows/oled_display.c b/keyboards/helix/rev3_5rows/keymaps/five_rows/oled_display.c
new file mode 100644
index 0000000000..c1f039e5b1
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/keymaps/five_rows/oled_display.c
@@ -0,0 +1,200 @@
+/* Copyright 2020 mtei
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include QMK_KEYBOARD_H
+#include <stdio.h>
+#ifdef CONSOLE_ENABLE
+  #include <print.h>
+#endif
+#ifdef SSD1306OLED
+  #include "ssd1306.h"
+#endif
+#include "string.h"
+#include "layer_number.h"
+
+extern int current_default_layer;
+
+void init_helix_oled(void) {
+#ifdef SSD1306OLED
+    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
+    iota_gfx_init(!has_usb());   // turns on the display
+#endif
+}
+
+//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
+#if defined(SSD1306OLED) || defined(OLED_DRIVER_ENABLE)
+
+#    if defined(OLED_DRIVER_ENABLE)
+oled_rotation_t oled_init_user(oled_rotation_t rotation) {
+    if (is_keyboard_master()) {
+        return OLED_ROTATION_0;
+    } else {
+        return OLED_ROTATION_180;
+    }
+}
+#    else
+#    define oled_write(data,flag)    matrix_write(matrix, data)
+#    define oled_write_P(data,flag)  matrix_write_P(matrix, data)
+#    endif
+
+#    ifdef SSD1306OLED
+void matrix_scan_user(void) {
+    iota_gfx_task();  // this is what updates the display continuously
+}
+
+void matrix_update(struct CharacterMatrix *dest,
+                   const struct CharacterMatrix *source) {
+    if (memcmp(dest->display, source->display, sizeof(dest->display))) {
+        memcpy(dest->display, source->display, sizeof(dest->display));
+        dest->dirty = true;
+    }
+}
+#    endif
+
+#    ifdef SSD1306OLED
+static void render_logo(struct CharacterMatrix *matrix) {
+#    else
+static void render_logo(void) {
+#    endif
+
+    static const char helix_logo[] PROGMEM = {
+        0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
+        0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
+        0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
+        0};
+    oled_write_P(helix_logo, false);
+#    ifdef RGBLIGHT_ENABLE
+    char buf[30];
+    if (RGBLIGHT_MODES > 1 && rgblight_is_enabled()) {
+        snprintf(buf, sizeof(buf), " LED %2d: %d,%d,%d ",
+                 rgblight_get_mode(),
+                 rgblight_get_hue()/RGBLIGHT_HUE_STEP,
+                 rgblight_get_sat()/RGBLIGHT_SAT_STEP,
+                 rgblight_get_val()/RGBLIGHT_VAL_STEP);
+        oled_write(buf, false);
+#        ifndef SSD1306OLED
+    } else {
+        oled_write_P( PSTR("\n"), false);
+#        endif
+    }
+#    endif
+}
+
+static const char Qwerty_name[]  PROGMEM = " Qwerty";
+static const char Colemak_name[] PROGMEM = " Colemak";
+static const char Dvorak_name[]  PROGMEM = " Dvorak";
+static const char Eucalyn_name[] PROGMEM = " Eucalyn";
+static const char Keypad_name[]  PROGMEM = " Keypad";
+
+static const char AUX_name[]     PROGMEM = ":AUX";
+static const char KAUX_name[]    PROGMEM = ":00";
+static const char Padfunc_name[] PROGMEM = ":PadFunc";
+static const char Lower_name[]   PROGMEM = ":Func";
+static const char Raise_name[]   PROGMEM = ":Extra";
+static const char Adjust_name[]  PROGMEM = ":Adjust";
+
+static const char *layer_names[] = {
+    [_QWERTY] = Qwerty_name,
+    [_COLEMAK] = Colemak_name,
+    [_DVORAK] = Dvorak_name,
+    [_EUCALYN]= Eucalyn_name,
+    [_KEYPAD] = Keypad_name,
+    [_AUX]    = AUX_name,
+    [_KAUX]   = KAUX_name,
+    [_LOWER]  = Lower_name,
+    [_RAISE]  = Raise_name,
+    [_PADFUNC]= Padfunc_name,
+    [_ADJUST] = Adjust_name
+};
+
+#    ifdef SSD1306OLED
+void render_status(struct CharacterMatrix *matrix) {
+#    else
+void render_status(void) {
+#    endif
+
+    // Render to mode icon
+    static const char os_logo[][2][3] PROGMEM ={{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
+    if(keymap_config.swap_lalt_lgui==false){
+        oled_write_P(os_logo[0][0], false);
+        oled_write_P(PSTR("\n"), false);
+        oled_write_P(os_logo[0][1], false);
+    } else {
+        oled_write_P(os_logo[1][0], false);
+        oled_write_P(PSTR("\n"), false);
+        oled_write_P(os_logo[1][1], false);
+    }
+
+    // Define layers here, Have not worked out how to have text displayed for each layer. Copy down the number you see and add a case for it below
+    int name_num;
+    uint32_t lstate;
+    oled_write_P(layer_names[current_default_layer], false);
+    oled_write_P(PSTR("\n"), false);
+    for (lstate = layer_state, name_num = 0;
+         lstate && name_num < sizeof(layer_names)/sizeof(char *);
+         lstate >>=1, name_num++) {
+        if ((lstate & 1) != 0) {
+            if (layer_names[name_num]) {
+                oled_write_P(layer_names[name_num], false);
+            }
+        }
+    }
+
+    // Host Keyboard LED Status
+    char led[40];
+    snprintf(led, sizeof(led), "\n%s  %s  %s",
+             (host_keyboard_leds() & (1<<USB_LED_NUM_LOCK)) ? "NUMLOCK" : "       ",
+             (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) ? "CAPS" : "    ",
+             (host_keyboard_leds() & (1<<USB_LED_SCROLL_LOCK)) ? "SCLK" : "    ");
+    oled_write(led, false);
+}
+
+#    ifdef SSD1306OLED
+void iota_gfx_task_user(void) {
+    struct CharacterMatrix matrix;
+
+#        if DEBUG_TO_SCREEN
+    if (debug_enable) {
+        return;
+    }
+#        endif
+
+    matrix_clear(&matrix);
+    if (is_keyboard_master()) {
+        render_status(&matrix);
+    } else {
+        render_logo(&matrix);
+    }
+    matrix_update(&display, &matrix);
+}
+#    else
+void oled_task_user(void) {
+
+#        if DEBUG_TO_SCREEN
+    if (debug_enable) {
+        return;
+    }
+#        endif
+
+    if(is_keyboard_master()){
+        render_status();
+    }else{
+        render_logo();
+    }
+}
+#    endif
+
+#endif