8610: Add 8610 DIU display driver

1280x1024 and 1024x768 @ 32 bpp are supported now.
DVI, Single-link LVDS, Double-link LVDS are all supported.

Environmental variable "monitor" is used to specify monitor port.

A new command "diufb" is introduced to reinitialize monitor
and display a BMP file in the memory. So far, 1-bit, 4-bit,
8-bit and 24-bit BMP formats are supported.

    diufb init
        - initialize the diu driver
    Enable the port specified in the environmental variable "monitor"

    diufb addr
        - display bmp file in memory.
    The bmp image should be no bigger than the resolution, 1280x1024
    for DVI and double-link LVDS, 1024x768 for single-link LVDS.

Note, this driver allocate memory but doesn't free it after use
It is written on purpose -- to avoid a failure of reallocation
due to memory fragement.

ECC of DDR is disabled for DIU performance. L2 data cache is also disabled.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Jon loeliger <jdl@freescale.com>

3 files changed, 150 insertions, 4 deletions

diff --git a/board/freescale/mpc8610hpcd/Makefile b/board/freescale/mpc8610hpcd/Makefile
index 6f5a5c1..76087c1 100644
--- a/board/freescale/mpc8610hpcd/Makefile
+++ b/board/freescale/mpc8610hpcd/Makefile
@@ -29,7 +29,9 @@ LIB	= $(obj)lib$(BOARD).a
 
 COBJS	:= $(BOARD).o \
 	../common/sys_eeprom.o \
-	../common/pixis.o
+	../common/pixis.o \
+	mpc8610hpcd_diu.o \
+	../common/fsl_diu_fb.o
 
 SOBJS	:= init.o
 
diff --git a/board/freescale/mpc8610hpcd/mpc8610hpcd.c b/board/freescale/mpc8610hpcd/mpc8610hpcd.c
index 63790ca..617881a 100644
--- a/board/freescale/mpc8610hpcd/mpc8610hpcd.c
+++ b/board/freescale/mpc8610hpcd/mpc8610hpcd.c
@@ -54,7 +54,47 @@ int board_early_init_f(void)
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;
 	volatile ccsr_gur_t *gur = &immap->im_gur;
 
-	gur->gpiocr |= 0x888a5500; /* DIU16, IR1, UART0, UART2 */
+	gur->gpiocr |= 0x88aa5500; /* DIU16, IR1, UART0, UART2 */
+
+	return 0;
+}
+
+int misc_init_r(void)
+{
+	u8 tmp_val, version;
+
+	/*Do not use 8259PIC*/
+	tmp_val = in8(PIXIS_BASE + PIXIS_BRDCFG0);
+	out8(PIXIS_BASE + PIXIS_BRDCFG0, tmp_val | 0x80);
+
+	/*For FPGA V7 or higher, set the IRQMAPSEL to 0 to use MAP0 interrupt*/
+	version = in8(PIXIS_BASE + PIXIS_PVER);
+	if(version >= 0x07) {
+		tmp_val = in8(PIXIS_BASE + PIXIS_BRDCFG0);
+		out8(PIXIS_BASE + PIXIS_BRDCFG0, tmp_val & 0xbf);
+	}
+
+	/* Using this for DIU init before the driver in linux takes over
+	 *  Enable the TFP410 Encoder (I2C address 0x38)
+	 */
+
+	tmp_val = 0xBF;
+	i2c_write(0x38, 0x08, 1, &tmp_val, sizeof(tmp_val));
+	/* Verify if enabled */
+	tmp_val = 0;
+	i2c_read(0x38, 0x08, 1, &tmp_val, sizeof(tmp_val));
+	debug("DVI Encoder Read: 0x%02lx\n",tmp_val);
+
+	tmp_val = 0x10;
+	i2c_write(0x38, 0x0A, 1, &tmp_val, sizeof(tmp_val));
+	/* Verify if enabled */
+	tmp_val = 0;
+	i2c_read(0x38, 0x0A, 1, &tmp_val, sizeof(tmp_val));
+	debug("DVI Encoder Read: 0x%02lx\n",tmp_val);
+
+#ifdef CONFIG_FSL_DIU_FB
+	mpc8610hpcd_diu_init();
+#endif
 
 	return 0;
 }
@@ -62,7 +102,6 @@ int board_early_init_f(void)
 int checkboard(void)
 {
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;
-	volatile ccsr_lbc_t *memctl = &immap->im_lbc;
 	volatile ccsr_local_mcm_t *mcm = &immap->im_local_mcm;
 
 	puts("Board: MPC8610HPCD\n");
@@ -468,7 +507,7 @@ ft_board_setup(void *blob, bd_t *bd)
 unsigned long
 get_board_sys_clk(ulong dummy)
 {
-	u8 i, go_bit, rd_clks;
+	u8 i;
 	ulong val = 0;
 	ulong a;
 
diff --git a/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c b/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c
new file mode 100644
index 0000000..4449376
--- /dev/null
+++ b/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2007 Freescale Semiconductor, Inc.
+ * York Sun <yorksun@freescale.com>
+ *
+ * FSL DIU Framebuffer driver
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/io.h>
+
+#ifdef CONFIG_FSL_DIU_FB
+
+#include "../common/pixis.h"
+#include "../common/fsl_diu_fb.h"
+
+
+extern unsigned int FSL_Logo_BMP[];
+
+
+void mpc8610hpcd_diu_init(void)
+{
+	char *monitor_port;
+	int xres, gamma_fix;
+	unsigned int pixel_format;
+	unsigned char tmp_val;
+
+	tmp_val = in8(PIXIS_BASE + PIXIS_BRDCFG0);
+	monitor_port = getenv ("monitor");
+
+	if (!strncmp(monitor_port, "0", 1)) {	/* 0 - DVI */
+		xres = 1280;
+		pixel_format = 0x88882317;
+		gamma_fix = 0;
+		out8(PIXIS_BASE + PIXIS_BRDCFG0, tmp_val | 0x08);
+
+	} else if (!strncmp(monitor_port, "1", 1)) { /* 1 - Single link LVDS */
+		xres = 1024;
+		pixel_format = 0x88883316;
+		gamma_fix = 0;
+		out8(PIXIS_BASE + PIXIS_BRDCFG0, (tmp_val & 0xf7) | 0x10);
+
+	} else if (!strncmp(monitor_port, "2", 1)) { /* 2 - Double link LVDS */
+		xres = 1280;
+		pixel_format = 0x88883316;
+		gamma_fix = 1;
+		out8(PIXIS_BASE + PIXIS_BRDCFG0, tmp_val & 0xe7);
+
+	} else {	/* DVI */
+		xres = 1280;
+		pixel_format = 0x88882317;
+		gamma_fix = 0;
+		out8(PIXIS_BASE + PIXIS_BRDCFG0, tmp_val | 0x08);
+	}
+
+	fsl_diu_init(xres, pixel_format, gamma_fix,
+		     (unsigned char *)FSL_Logo_BMP);
+}
+
+int mpc8610diu_init_show_bmp(cmd_tbl_t *cmdtp,
+			     int flag, int argc, char *argv[])
+{
+	unsigned int addr;
+
+	if (argc < 2) {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	if (!strncmp(argv[1],"init",4)) {
+		mpc8610hpcd_diu_init();
+	} else {
+		addr = simple_strtoul(argv[1], NULL, 16);
+		fsl_diu_clear_screen();
+		fsl_diu_display_bmp((unsigned char *)addr, 0, 0, 0);
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	diufb, CFG_MAXARGS, 1, mpc8610diu_init_show_bmp,
+	"diufb init | addr - Init or Display BMP file\n",
+	"init\n    - initialize DIU\n"
+	"addr\n    - display bmp at address 'addr'\n"
+	);
+#endif /* CONFIG_FSL_DIU_FB */