stm32f429i-disco: enable usage of ili93414ws

This enables build and configuration of the ili94314ws sub driver.

Signed-off-by: Marco Krahl <ocram.lhark@gmail.com>

configs/stm32f429i-disco/Kconfig

@@ -133,4 +133,45 @@ config PM_SLEEP_WAKEUP_NSEC
 	---help---
 		Number of additional nanoseconds to wait in PM_SLEEP before going to PM_STANDBY mode.
 
+config STM32F429I_DISCO_ILI9341
+	bool "LCD driver for ILI9341 Liquid Crystal Display Controller"
+	default n
+	---help---
+		Enables  support for a connected display based on ili9341 LCD Single Chip
+		Driver. This sub driver supports only communication with the display driver
+		connected via 4-wire serial (spi) mcu interface.
+
+config STM32F429I_DISCO_ILI9341_SPIFREQUENCY
+	int "SPI frequency"
+	default 12000000
+	depends on STM32F429I_DISCO_ILI9341
+	---help---
+		Define the bus freqency of the spi device.
+
+config STM32F429I_DISCO_ILI9341_SPIBITS16
+	bool "Enable 16 bit pixel read/write"
+	default n
+	depends on STM32F429I_DISCO_ILI9341
+	---help---
+		This enables faster 16-bit spi mode for transmitting or receiving pixel data
+		to or from the display gram. But uses default 8-bit spi mode for all other
+		display operations.
+
+config STM32F429I_DISCO_ILI9341_LCDIFACE
+	bool "Enable support for nuttx lcd interface"
+	default n
+	depends on STM32F429I_DISCO_ILI9341 && LCD_ILI9341
+	---help---
+		Enable lcd driver support for the nuttx lcd interface.
+
+config STM32F429I_DISCO_ILI9341_LCDDEVICE
+	int "LCD interface"
+	default 0
+	range 0 1
+	depends on STM32F429I_DISCO_ILI9341_LCDIFACE
+	---help---
+		Define the lcd interface which should be used. This must be
+		corresponding to the configured ili9341 lcd device in the driver
+		section.
+
 endif

configs/stm32f429i-disco/src/Makefile

@@ -72,6 +72,14 @@ ifeq ($(CONFIG_STM32_OTGFHS),y)
 CSRCS += stm32_usb.c
 endif
 
+ifeq ($(CONFIG_STM32F429I_DISCO_ILI9341),y)
+CSRCS += stm32_ili93414ws.c
+endif
+
+ifeq ($(CONFIG_STM32F429I_DISCO_ILI9341_LCDIFACE),y)
+CSRCS += stm32_lcd.c
+endif
+
 ifeq ($(CONFIG_ARCH_FPU),y)
 CSRCS += stm32_ostest.c
 endif

configs/stm32f429i-disco/src/stm32_spi.c

@@ -2,7 +2,8 @@
  * configs/stm32f429i-disco/src/stm32_spi.c
  *
  *   Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *   Authors: Gregory Nutt <gnutt@nuttx.org>
+ *            Marco Krahl <ocram.lhark@gmail.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -189,7 +190,7 @@ void stm32_spi5select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool sele
 {
   spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
 
-#if defined(CONFIG_STM32_LTDC)
+#if defined(CONFIG_STM32F429I_DISCO_ILI9341)
   if (devid == SPIDEV_DISPLAY)
     {
       stm32_gpiowrite(GPIO_CS_LCD, !selected);
@@ -263,16 +264,15 @@ int stm32_spi4cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
 #ifdef CONFIG_STM32_SPI5
 int stm32_spi5cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
 {
-#if defined(CONFIG_STM32_LTDC)
+#if defined(CONFIG_STM32F429I_DISCO_ILI9341)
   if (devid == SPIDEV_DISPLAY)
     {
-      /* "This is the Data/Command control pad which determines whether the
+      /*  This is the Data/Command control pad which determines whether the
        *  data bits are data or a command.
        */
 
-# if defined(CONFIG_STM32_LTDC)
       (void)stm32_gpiowrite(GPIO_LCD_DC, !cmd);
-# endif
+
       return OK;
     }
 #endif