powerpc/t1042RDB: Add Video - HDMI support

T1042 has internal display interface unit (DIU) for driving video.
T1042RDB supports video mode via
-LCD using TI enconder
-HDMI type interface via HDMI encoder

Chrontel, CH7301C encoder which is I2C programmable is used
as HDMI connector on T1042RDB.
This patch add support to
-enable Video interface for T1042RDB
-route qixis multiplexing to enable DIU-HDMI interface on board
-program DIU pixel clock gerenartor for T1042
-program HDMI encoder via I2C on board

This patch refer to the upstream diu patch
(337b0c52b3) for T1040qds.

Signed-off-by: Jason Jin <Jason.Jin@freescale.com>
Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com>
[York Sun: resolve conflict and move changes to T104xRDB.h]
Reviewed-by: York Sun <yorksun@freescale.com>

include/configs/T104xRDB.h

@@ -268,6 +268,9 @@
 #define CPLD_LBMAP_DFLTBANK		0x40 /* BANK OR | BANK0 */
 #define CPLD_LBMAP_RESET		0xFF
 #define CPLD_LBMAP_SHIFT		0x03
+#ifdef CONFIG_T1042RDB_PI
+#define CPLD_DIU_SEL_DFP		0x80
+#endif
 
 #define CONFIG_SYS_CPLD_BASE	0xffdf0000
 #define CONFIG_SYS_CPLD_BASE_PHYS	(0xf00000000ull | CONFIG_SYS_CPLD_BASE)
@@ -429,6 +432,24 @@
 #define CONFIG_SYS_HUSH_PARSER
 #define CONFIG_SYS_PROMPT_HUSH_PS2 "> "
 
+#ifdef CONFIG_T1042RDB_PI
+/* Video */
+#define CONFIG_FSL_DIU_FB
+
+#ifdef CONFIG_FSL_DIU_FB
+#define CONFIG_FSL_DIU_CH7301
+#define CONFIG_SYS_DIU_ADDR	(CONFIG_SYS_CCSRBAR + 0x180000)
+#define CONFIG_VIDEO
+#define CONFIG_CMD_BMP
+#define CONFIG_CFB_CONSOLE
+#define CONFIG_CFB_CONSOLE_ANSI
+#define CONFIG_VIDEO_SW_CURSOR
+#define CONFIG_VGA_AS_SINGLE_DEVICE
+#define CONFIG_VIDEO_LOGO
+#define CONFIG_VIDEO_BMP_LOGO
+#endif
+#endif
+
 /* pass open firmware flat tree */
 #define CONFIG_OF_LIBFDT
 #define CONFIG_OF_BOARD_SETUP
@@ -461,6 +482,10 @@
 #endif
 
 #ifdef CONFIG_T1042RDB_PI
+/* LDI/DVI Encoder for display */
+#define CONFIG_SYS_I2C_LDI_ADDR		0x38
+#define CONFIG_SYS_I2C_DVI_ADDR		0x75
+
 /*
  * RTC configuration
  */
@@ -772,11 +797,18 @@
 #define RAMDISKFILE	"t1040rdb_pi/ramdisk.uboot"
 #endif
 
+#ifdef CONFIG_FSL_DIU_FB
+#define DIU_ENVIRONMENT "video-mode=fslfb:1024x768-32@60,monitor=dvi"
+#else
+#define DIU_ENVIRONMENT
+#endif
+
 #define	CONFIG_EXTRA_ENV_SETTINGS				\
 	"hwconfig=fsl_ddr:bank_intlv=cs0_cs1;"			\
 	"usb1:dr_mode=host,phy_type=" __stringify(__USB_PHY_TYPE) ";"\
 	"usb2:dr_mode=host,phy_type=" __stringify(__USB_PHY_TYPE) "\0"\
 	"netdev=eth0\0"						\
+	"video-mode=" __stringify(DIU_ENVIRONMENT) "\0"		\
 	"uboot=" __stringify(CONFIG_UBOOTPATH) "\0"		\
 	"ubootaddr=" __stringify(CONFIG_SYS_TEXT_BASE) "\0"	\
 	"tftpflash=tftpboot $loadaddr $uboot && "		\