3 files changed, 9 insertions, 4 deletions
diff --git a/shared-module/displayio/Display.c b/shared-module/displayio/Display.c
index add42f599..6af8324ef 100644
--- a/shared-module/displayio/Display.c
+++ b/shared-module/displayio/Display.c
@@ -48,7 +48,7 @@ void common_hal_displayio_display_construct(displayio_display_obj_t* self,
         uint8_t set_row_command, uint8_t write_ram_command, uint8_t set_vertical_scroll,
         uint8_t* init_sequence, uint16_t init_sequence_len, const mcu_pin_obj_t* backlight_pin,
         uint16_t brightness_command, mp_float_t brightness, bool auto_brightness,
-        bool single_byte_bounds, bool data_as_commands, bool auto_refresh, uint16_t native_frames_per_second) {
+        bool single_byte_bounds, bool data_as_commands, bool auto_refresh, uint16_t native_frames_per_second, bool backlight_on_high) {
     // Turn off auto-refresh as we init.
     self->auto_refresh = false;
     uint16_t ram_width = 0x100;
@@ -157,6 +157,9 @@ mp_float_t common_hal_displayio_display_get_brightness(displayio_display_obj_t*
 
 bool common_hal_displayio_display_set_brightness(displayio_display_obj_t* self, mp_float_t brightness) {
     self->updating_backlight = true;
+    if (!self->backlight_on_high){
+        brightness = 1.0-brightness;
+    }
     bool ok = false;
     if (self->backlight_pwm.base.type == &pulseio_pwmout_type) {
         common_hal_pulseio_pwmout_set_duty_cycle(&self->backlight_pwm, (uint16_t) (0xffff * brightness));
diff --git a/shared-module/displayio/Display.h b/shared-module/displayio/Display.h
index e5fe0a708..8adaf597f 100644
--- a/shared-module/displayio/Display.h
+++ b/shared-module/displayio/Display.h
@@ -55,6 +55,7 @@ typedef struct {
     bool data_as_commands;
     bool auto_brightness;
     bool updating_backlight;
+    bool backlight_on_high;
 } displayio_display_obj_t;
 
 void displayio_display_background(displayio_display_obj_t* self);
diff --git a/shared-module/displayio/FourWire.c b/shared-module/displayio/FourWire.c
index c98b2d670..17e8cfa1d 100644
--- a/shared-module/displayio/FourWire.c
+++ b/shared-module/displayio/FourWire.c
@@ -38,7 +38,8 @@
 
 void common_hal_displayio_fourwire_construct(displayio_fourwire_obj_t* self,
     busio_spi_obj_t* spi, const mcu_pin_obj_t* command,
-    const mcu_pin_obj_t* chip_select, const mcu_pin_obj_t* reset, uint32_t baudrate) {
+    const mcu_pin_obj_t* chip_select, const mcu_pin_obj_t* reset, uint32_t baudrate,
+    uint8_t polarity, uint8_t phase) {
 
     self->bus = spi;
     common_hal_busio_spi_never_reset(self->bus);
@@ -47,8 +48,8 @@ void common_hal_displayio_fourwire_construct(displayio_fourwire_obj_t* self,
     gc_never_free(self->bus);
 
     self->frequency = baudrate;
-    self->polarity = 0;
-    self->phase = 0;
+    self->polarity = polarity;
+    self->phase = phase;
 
     common_hal_digitalio_digitalinout_construct(&self->command, command);
     common_hal_digitalio_digitalinout_switch_to_output(&self->command, true, DRIVE_MODE_PUSH_PULL);