drivers: display: add stm32_ltdc driver

Add Kconfig for STM32 LTDC driver
Add STM32 LTDC driver C source
Update display drivers CMakeLists with the new driver
Update display drivers Kconfig with the new driver

Signed-off-by: Tomislav Milkovic <[email protected]>

Author: tmilkovic51

drivers/display/CMakeLists.txt

@@ -16,6 +16,7 @@ zephyr_library_sources_ifdef(CONFIG_SSD1306		ssd1306.c)
 zephyr_library_sources_ifdef(CONFIG_SSD16XX		ssd16xx.c)
 zephyr_library_sources_ifdef(CONFIG_ST7789V		display_st7789v.c)
 zephyr_library_sources_ifdef(CONFIG_ST7735R		display_st7735r.c)
+zephyr_library_sources_ifdef(CONFIG_STM32_LTDC		display_stm32_ltdc.c)
 
 zephyr_library_sources_ifdef(CONFIG_MICROBIT_DISPLAY
 	mb_display.c

drivers/display/Kconfig

@@ -29,6 +29,7 @@ source "drivers/display/Kconfig.ssd1306"
 source "drivers/display/Kconfig.ssd16xx"
 source "drivers/display/Kconfig.st7735r"
 source "drivers/display/Kconfig.st7789v"
+source "drivers/display/Kconfig.stm32_ltdc"
 source "drivers/display/Kconfig.gd7965"
 source "drivers/display/Kconfig.dummy"
 source "drivers/display/Kconfig.ls0xx"

drivers/display/Kconfig.stm32_ltdc

@@ -0,0 +1,40 @@
+# STM32 LTDC display driver configuration options
+
+# Copyright (c) 2022 Byte-Lab d.o.o. <[email protected]>
+# SPDX-License-Identifier: Apache-2.0
+
+DT_COMPAT_STM32_LTDC := st,stm32-ltdc
+
+menuconfig STM32_LTDC
+	bool "STM32 LCD-TFT display controller driver"
+	default $(dt_compat_enabled,$(DT_COMPAT_STM32_LTDC))
+	select USE_STM32_HAL_LTDC
+	help
+	  Enable driver for STM32 LCT-TFT display controller periheral.
+
+choice STM32_LTDC_PIXEL_FORMAT
+	prompt "Color pixel format"
+	default STM32_LTDC_RGB565
+	depends on STM32_LTDC
+	help
+	  Specify the color pixel format for the STM32 LCD-TFT display controller.
+
+config STM32_LTDC_ARGB8888
+	bool "ARGB8888"
+	help
+	  One pixel consists of 8-bit alpha, 8-bit red, 8-bit green and 8-bit blue value
+	  (4 bytes per pixel)
+
+config STM32_LTDC_RGB888
+	bool "RGB888"
+	help
+	  One pixel consists of 8-bit red, 8-bit green and 8-bit blue value
+	  (3 bytes per pixel)
+
+config STM32_LTDC_RGB565
+	bool "RGB565"
+	help
+	  One pixel consists of 5-bit red, 6-bit green and 5-bit blue value
+	  (2 bytes per pixel)
+
+endchoice