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>

1 files changed, 105 insertions, 0 deletions

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 */