display: Add support for an ST7789V based LCD

This adds a driver for st7789v lcd controller, and TL019FQV01 lcd.
The bulk of the driver is based on the existing ili9340 driver.

Signed-off-by: Marc Reilly <marc@cpdesign.com.au>

drivers/display/CMakeLists.txt

@@ -8,6 +8,7 @@ zephyr_sources_ifdef(CONFIG_SDL_DISPLAY		display_sdl.c)
 zephyr_sources_ifdef(CONFIG_DUMMY_DISPLAY	display_dummy.c)
 zephyr_sources_ifdef(CONFIG_FRAMEBUF_DISPLAY	display_framebuf.c)
 zephyr_sources_ifdef(CONFIG_ILI9340		display_ili9340.c)
+zephyr_sources_ifdef(CONFIG_ST7789V		display_st7789v.c)
 
 zephyr_sources_ifdef(CONFIG_MICROBIT_DISPLAY
 	mb_display.c
@@ -20,3 +21,7 @@ zephyr_sources_ifdef(CONFIG_ILI9340_LCD_ADAFRUIT_1480
 zephyr_sources_ifdef(CONFIG_ILI9340_LCD_SEEED_TFTV2
 	display_ili9340_seeed_tftv2.c
 )
+
+zephyr_sources_ifdef(CONFIG_ST7789V_LCD_TL019FQV01
+	display_st7789v_tl019fqv01.c
+)

drivers/display/Kconfig

@@ -24,6 +24,7 @@ source "drivers/display/Kconfig.ili9340"
 source "drivers/display/Kconfig.sdl"
 source "drivers/display/Kconfig.ssd1306"
 source "drivers/display/Kconfig.ssd16xx"
+source "drivers/display/Kconfig.st7789v"
 source "drivers/display/Kconfig.dummy"
 
 config FRAMEBUF_DISPLAY

drivers/display/Kconfig.st7789v

@@ -0,0 +1,68 @@
+# Kconfig - ST7789V display driver configuration options
+
+#
+# Copyright (c) 2019 Marc Reilly <marc@cpdesign.com.au>
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+menuconfig ST7789V
+	bool "ST7789V display driver"
+	depends on SPI
+	help
+	  Enable driver for ST7789V display driver.
+
+if ST7789V
+
+choice
+	prompt "LCD"
+	help
+	  Specify the type of LCD connected to the ST7789V display controller.
+
+config ST7789V_LCD_TL019FQV01
+	bool "TDO TL019FQV01"
+
+endchoice
+
+choice
+	prompt "Color pixel format"
+	default ST7789V_RGB565
+	help
+	  Specify the color pixel format for the ST7789V display controller.
+
+config ST7789V_RGB888
+	bool "RGB888"
+
+config ST7789V_RGB565
+	bool "RGB565"
+
+endchoice
+
+if ST7789V_RGB565
+config ST7789V_SWAP_PIXEL_LCD_ENDIANNESS
+	bool "Swap pixel endianness at LCD"
+	help
+	  Pixel data bytes are swapped when being blitted to the LCD.
+	  Note that this isn't just a swap of RGB <--> BGR, (if the endianness is
+	  swapped then the 3 lowest bits of G are sent first/last).
+	  You may want to enable this if you are using lvgl and your colors
+	  don't look right.
+
+config ST7789V_REVERSE_LCD_RGB_ORDER
+	bool "Reverse draw order of controller ram to LCD"
+	help
+	  This reverses the order that the controller draws RGB to the LCD.
+
+config ST7789V_REVERSE_X
+	bool "Reverse X axis"
+	help
+	  Address pixels from right to left.
+
+config ST7789V_REVERSE_Y
+	bool "Reverse Y axis"
+	help
+	  Address pixels from bottom to top.
+
+endif #ST7789V_RGB565
+
+endif #ST7789V