ls102xa: dcu: Add platform support for DCU on LS1021ATWR board

This patch adds the TWR_LCD_RGB card/HDMI options and the common
configuration for DCU on LS1021ATWR board.

Signed-off-by: Alison Wang <alison.wang@freescale.com>

board/freescale/ls1021atwr/Makefile

@@ -5,3 +5,4 @@
 #
 
 obj-y += ls1021atwr.o
+obj-$(CONFIG_FSL_DCU_FB) += dcu.o

board/freescale/ls1021atwr/dcu.c

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * FSL DCU Framebuffer driver
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <fsl_dcu_fb.h>
+#include "div64.h"
+#include "../common/dcu_sii9022a.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+unsigned int dcu_set_pixel_clock(unsigned int pixclock)
+{
+	unsigned long long div;
+
+	div = (unsigned long long)(gd->bus_clk / 1000);
+	div *= (unsigned long long)pixclock;
+	do_div(div, 1000000000);
+
+	return div;
+}
+
+int platform_dcu_init(unsigned int xres, unsigned int yres,
+		      const char *port,
+		      struct fb_videomode *dcu_fb_videomode)
+{
+	const char *name;
+	unsigned int pixel_format;
+
+	if (strncmp(port, "twr_lcd", 4) == 0) {
+		name = "TWR_LCD_RGB card";
+	} else {
+		name = "HDMI";
+		dcu_set_dvi_encoder(dcu_fb_videomode);
+	}
+
+	printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres);
+
+	pixel_format = 32;
+	fsl_dcu_init(xres, yres, pixel_format);
+
+	return 0;
+}

board/freescale/ls1021atwr/ls1021atwr.c

@@ -261,6 +261,12 @@ int board_early_init_f(void)
 	init_early_memctl_regs();
 #endif
 
+#ifdef CONFIG_FSL_DCU_FB
+	out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_REV);
+	out_be32(&scfg->pixclkcr, SCFG_PIXCLKCR_PXCKEN);
+	out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_NOREV);
+#endif
+
 	return 0;
 }
 

include/configs/ls1021atwr.h

@@ -162,6 +162,24 @@
 #define CONFIG_FSL_ESDHC
 #define CONFIG_GENERIC_MMC
 
+/*
+ * Video
+ */
+#define CONFIG_FSL_DCU_FB
+
+#ifdef CONFIG_FSL_DCU_FB
+#define CONFIG_VIDEO
+#define CONFIG_CMD_BMP
+#define CONFIG_CFB_CONSOLE
+#define CONFIG_VGA_AS_SINGLE_DEVICE
+#define CONFIG_VIDEO_LOGO
+#define CONFIG_VIDEO_BMP_LOGO
+
+#define CONFIG_FSL_DCU_SII9022A
+#define CONFIG_SYS_I2C_DVI_BUS_NUM	1
+#define CONFIG_SYS_I2C_DVI_ADDR		0x39
+#endif
+
 /*
  * eTSEC
  */