Fix backlight support for some boards (#21554)

keyboards/deng/thirty/config.h

@@ -15,6 +15,9 @@
  */
 #pragma once
 
+#define BACKLIGHT_PWM_DRIVER PWMD2
+#define BACKLIGHT_PWM_CHANNEL 4
+
 /* RGB Matrix */
 #ifdef RGB_MATRIX_ENABLE
 #define RGB_MATRIX_LED_COUNT 30

keyboards/deng/thirty/halconf.h

@@ -0,0 +1,20 @@
+/* Copyright 2020 Nick Brassel (tzarc)
+ *
+ *  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 3 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 <https://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#define HAL_USE_PWM TRUE
+
+#include_next <halconf.h>

keyboards/deng/thirty/info.json

@@ -17,7 +17,6 @@
     },
     "diode_direction": "COL2ROW",
     "backlight": {
-        "driver": "software",
         "pin": "B11",
         "levels": 5,
         "on_state": 0

keyboards/deng/thirty/mcuconf.h

@@ -0,0 +1,21 @@
+/* Copyright 2020 Nick Brassel (tzarc)
+ *
+ *  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 3 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 <https://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include_next <mcuconf.h>
+
+#undef STM32_PWM_USE_TIM2
+#define STM32_PWM_USE_TIM2 TRUE

keyboards/deng/thirty/thirty.c

@@ -46,3 +46,8 @@ led_config_t g_led_config = {
 };
 
 #endif
+
+void board_init(void) {
+    // Remap B11 AF to TIM2_CH4
+    AFIO->MAPR |= AFIO_MAPR_TIM2_REMAP_PARTIALREMAP2;
+}