From ca03a9232767754d24bbf9c3203f6e56a20f9ea6 Mon Sep 17 00:00:00 2001
From: Dong Heng <dongheng@espressif.com>
Date: Wed, 20 Sep 2023 15:11:13 +0800
Subject: [PATCH] drivers/lcd/st7789: Add option to support set BGR mode

---
 drivers/lcd/Kconfig  | 6 ++++++
 drivers/lcd/st7789.c | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/lcd/Kconfig b/drivers/lcd/Kconfig
index 66bd58ef86..667b571b6c 100644
--- a/drivers/lcd/Kconfig
+++ b/drivers/lcd/Kconfig
@@ -752,6 +752,12 @@ config LCD_ST7789_INVCOLOR
 		Invert colors of the LCD display. This is useful for implementations
 		that assume that that colors are inverted by default.
 
+config LCD_ST7789_BGR
+	bool "ST7789 Use BGR Instead Of RGB"
+	default n
+	---help---
+		Use BGR color format instead of RGB color format.
+
 config LCD_ST7789_BPP
 	int "Bit Per Pixel (12 or 16)"
 	default 16
diff --git a/drivers/lcd/st7789.c b/drivers/lcd/st7789.c
index 1e92f82864..b6418fa5dd 100644
--- a/drivers/lcd/st7789.c
+++ b/drivers/lcd/st7789.c
@@ -480,6 +480,10 @@ static void st7789_setorientation(FAR struct st7789_dev_s *dev)
   madctl ^= 0x80;
 #endif
 
+#ifdef CONFIG_LCD_ST7789_BGR
+  madctl |= 0x08;
+#endif
+
   SPI_SEND(dev->spi, LCD_ST7789_DATA_PREFIX | madctl);
 
   st7789_deselect(dev->spi);