ARM: add an "eet" variant of the imx31_phycore board

The "eet" variant of the imx31_phycore board has an OLED display, using a
s6e63d6 display controller on the first SPI interface, using GPIO57 as a
chip-select for it. With this configuration you can display 256 colour BMP
images in 16-bit RGB (RGB565) LCD mode.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

Makefile

@@ -3029,8 +3029,12 @@ apollon_config		: unconfig
 imx31_litekit_config	: unconfig
 	@$(MKCONFIG) $(@:_config=) arm arm1136 imx31_litekit NULL mx31
 
+imx31_phycore_eet_config \
 imx31_phycore_config	: unconfig
-	@$(MKCONFIG) $(@:_config=) arm arm1136 imx31_phycore NULL mx31
+	@if [ -n "$(findstring _eet_,$@)" ]; then			\
+		echo "#define CONFIG_IMX31_PHYCORE_EET" >> $(obj)include/config.h;	\
+	fi
+	@$(MKCONFIG) -a imx31_phycore arm arm1136 imx31_phycore NULL mx31
 
 mx31ads_config		: unconfig
 	@$(MKCONFIG) $(@:_config=) arm arm1136 mx31ads freescale mx31

board/imx31_phycore/imx31_phycore.c

@@ -23,6 +23,7 @@
 
 
 #include <common.h>
+#include <s6e63d6.h>
 #include <asm/arch/mx31.h>
 #include <asm/arch/mx31-regs.h>
 
@@ -66,6 +67,62 @@ int board_init (void)
 	return 0;
 }
 
+#ifdef BOARD_LATE_INIT
+int board_late_init(void)
+{
+#ifdef CONFIG_S6E63D6
+	struct s6e63d6 data = {
+		/*
+		 * See comment in mxc_spi.c::decode_cs() for .cs field format.
+		 * We use GPIO 57 as a chipselect for the S6E63D6 and chipselect
+		 * 2 of the SPI controller #1, since it is unused.
+		 */
+		.cs = 2 | (57 << 8),
+		.bus = 0,
+		.id = 0,
+	};
+	int ret;
+
+	/* SPI1 */
+	mx31_gpio_mux(MUX_CSPI1_SCLK__CSPI1_CLK);
+	mx31_gpio_mux(MUX_CSPI1_SPI_RDY__CSPI1_DATAREADY_B);
+	mx31_gpio_mux(MUX_CSPI1_MOSI__CSPI1_MOSI);
+	mx31_gpio_mux(MUX_CSPI1_MISO__CSPI1_MISO);
+	mx31_gpio_mux(MUX_CSPI1_SS0__CSPI1_SS0_B);
+	mx31_gpio_mux(MUX_CSPI1_SS1__CSPI1_SS1_B);
+	mx31_gpio_mux(MUX_CSPI1_SS2__CSPI1_SS2_B);
+
+	/* start SPI1 clock */
+	__REG(CCM_CGR2) = __REG(CCM_CGR2) | (3 << 2);
+
+	/* GPIO 57 */
+	/* sw_mux_ctl_key_col4_key_col5_key_col6_key_col7 */
+	mx31_gpio_mux(IOMUX_MODE(0x63, MUX_CTL_GPIO));
+
+	/* SPI1 CS2 is free */
+	ret = s6e63d6_init(&data);
+	if (ret)
+		return ret;
+
+	/*
+	 * This is a "magic" sequence to initialise a C0240QGLA / C0283QGLC
+	 * OLED display connected to a S6E63D6 SPI display controller in the
+	 * 18 bit RGB mode
+	 */
+	s6e63d6_index(&data, 2);
+	s6e63d6_param(&data, 0x0182);
+	s6e63d6_index(&data, 3);
+	s6e63d6_param(&data, 0x8130);
+	s6e63d6_index(&data, 0x10);
+	s6e63d6_param(&data, 0x0000);
+	s6e63d6_index(&data, 5);
+	s6e63d6_param(&data, 0x0001);
+	s6e63d6_index(&data, 0x22);
+#endif
+	return 0;
+}
+#endif
+
 int checkboard (void)
 {
 	printf("Board: Phytec phyCore i.MX31\n");

include/asm-arm/arch-mx31/mx31-regs.h

@@ -134,7 +134,14 @@
 #define MUX_CTL_CSPI2_SS0	0x85
 #define MUX_CTL_CSPI2_SS1	0x86
 #define MUX_CTL_CSPI2_SS2	0x87
+#define MUX_CTL_CSPI1_SS2	0x88
+#define MUX_CTL_CSPI1_SCLK	0x89
+#define MUX_CTL_CSPI1_SPI_RDY	0x8a
 #define MUX_CTL_CSPI2_MOSI	0x8b
+#define MUX_CTL_CSPI1_MOSI	0x8c
+#define MUX_CTL_CSPI1_MISO	0x8d
+#define MUX_CTL_CSPI1_SS0	0x8e
+#define MUX_CTL_CSPI1_SS1	0x8f
 
 /*
  * Helper macros for the MUX_[contact name]__[pin function] macros
@@ -160,6 +167,15 @@
 	IOMUX_MODE(MUX_CTL_CSPI2_SPI_RDY, MUX_CTL_FUNC)
 #define MUX_CSPI2_SCLK__CSPI2_CLK IOMUX_MODE(MUX_CTL_CSPI2_SCLK, MUX_CTL_FUNC)
 
+#define MUX_CSPI1_SS0__CSPI1_SS0_B IOMUX_MODE(MUX_CTL_CSPI1_SS0, MUX_CTL_FUNC)
+#define MUX_CSPI1_SS1__CSPI1_SS1_B IOMUX_MODE(MUX_CTL_CSPI1_SS1, MUX_CTL_FUNC)
+#define MUX_CSPI1_SS2__CSPI1_SS2_B IOMUX_MODE(MUX_CTL_CSPI1_SS2, MUX_CTL_FUNC)
+#define MUX_CSPI1_MOSI__CSPI1_MOSI IOMUX_MODE(MUX_CTL_CSPI1_MOSI, MUX_CTL_FUNC)
+#define MUX_CSPI1_MISO__CSPI1_MISO IOMUX_MODE(MUX_CTL_CSPI1_MISO, MUX_CTL_FUNC)
+#define MUX_CSPI1_SPI_RDY__CSPI1_DATAREADY_B \
+	IOMUX_MODE(MUX_CTL_CSPI1_SPI_RDY, MUX_CTL_FUNC)
+#define MUX_CSPI1_SCLK__CSPI1_CLK IOMUX_MODE(MUX_CTL_CSPI1_SCLK, MUX_CTL_FUNC)
+
 #define MUX_CSPI2_MOSI__I2C2_SCL IOMUX_MODE(MUX_CTL_CSPI2_MOSI, MUX_CTL_ALT1)
 #define MUX_CSPI2_MISO__I2C2_SDA IOMUX_MODE(MUX_CTL_CSPI2_MISO, MUX_CTL_ALT1)
 

include/configs/imx31_phycore.h

@@ -178,4 +178,27 @@
 #undef CONFIG_JFFS2_CMDLINE
 #define CONFIG_JFFS2_DEV	"nor0"
 
+/* EET platform additions */
+#ifdef CONFIG_IMX31_PHYCORE_EET
+#define BOARD_LATE_INIT
+
+#define CONFIG_MX31_GPIO			1
+
+#define CONFIG_HARD_SPI				1
+#define CONFIG_MXC_SPI				1
+#define CONFIG_CMD_SPI
+
+#define CONFIG_S6E63D6				1
+
+#define CONFIG_LCD				1
+#define CONFIG_VIDEO_MX3			1
+#define CONFIG_SYS_WHITE_ON_BLACK		1
+#define LCD_BPP					LCD_COLOR8
+#define	CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE	1
+#define CONFIG_SYS_CONSOLE_IS_IN_ENV		1
+
+#define	CONFIG_SPLASH_SCREEN			1
+#define CONFIG_CMD_BMP				1
+#endif
+
 #endif /* __CONFIG_H */