p1022ds: add video support

Add support for the DIU controller.  If CONFIG_VIDEO is defined, then
the console will appear on a DVI monitor instead of the serial port.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>

diff --git a/board/freescale/p1022ds/Makefile b/board/freescale/p1022ds/Makefile
index 8ede2d6055d95a34114bd0ac9e0421815da79133..678eb2ae0687355eea9a1ef0fe4b2f845e8cf46b 100644 (file)
--- a/board/freescale/p1022ds/Makefile
+++ b/board/freescale/p1022ds/Makefile
@@ -16,6 +16,8 @@ COBJS-y       += ddr.o
 COBJS-y        += law.o
 COBJS-y        += tlb.o
 
+COBJS-$(CONFIG_FSL_DIU_FB) += diu.o
+
 SRCS   := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
 OBJS   := $(addprefix $(obj),$(COBJS-y))
 SOBJS  := $(addprefix $(obj),$(SOBJS))

diff --git a/board/freescale/p1022ds/diu.c b/board/freescale/p1022ds/diu.c
new file mode 100644 (file)
index 0000000..5ca84df
--- /dev/null
+++ b/board/freescale/p1022ds/diu.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2010 Freescale Semiconductor, Inc.
+ * Authors: Timur Tabi <timur@freescale.com>
+ *
+ * FSL DIU Framebuffer driver
+ *
+ * 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.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/io.h>
+#include <stdio_dev.h>
+#include <video_fb.h>
+#include "../common/ngpixis.h"
+#include <fsl_diu_fb.h>
+
+#define PX_BRDCFG0_ELBC_DIU    0x02
+
+#define PX_BRDCFG1_DVIEN       0x80
+#define PX_BRDCFG1_DFPEN       0x40
+#define PX_BRDCFG1_BACKLIGHT   0x20
+
+/*
+ * DIU Area Descriptor
+ *
+ * Note that we need to byte-swap the value before it's written to the AD
+ * register.  So even though the registers don't look like they're in the same
+ * bit positions as they are on the MPC8610, the same value is written to the
+ * AD register on the MPC8610 and on the P1022.
+ */
+#define AD_BYTE_F              0x10000000
+#define AD_ALPHA_C_SHIFT       25
+#define AD_BLUE_C_SHIFT                23
+#define AD_GREEN_C_SHIFT       21
+#define AD_RED_C_SHIFT         19
+#define AD_PIXEL_S_SHIFT       16
+#define AD_COMP_3_SHIFT                12
+#define AD_COMP_2_SHIFT                8
+#define AD_COMP_1_SHIFT                4
+#define AD_COMP_0_SHIFT                0
+
+void diu_set_pixel_clock(unsigned int pixclock)
+{
+       ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+       unsigned long speed_ccb, temp;
+       u32 pixval;
+
+       speed_ccb = get_bus_freq(0);
+       temp = 1000000000 / pixclock;
+       temp *= 1000;
+       pixval = speed_ccb / temp;
+       debug("DIU pixval = %lu\n", pixval);
+
+       /* Modify PXCLK in GUTS CLKDVDR */
+       temp = in_be32(&gur->clkdvdr) & 0x2000FFFF;
+       out_be32(&gur->clkdvdr, temp);                  /* turn off clock */
+       out_be32(&gur->clkdvdr, temp | 0x80000000 | ((pixval & 0x1F) << 16));
+}
+
+int platform_diu_init(unsigned int *xres, unsigned int *yres)
+{
+       ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+       char *monitor_port;
+       u32 pixel_format;
+       u8 temp;
+
+       pixel_format = cpu_to_le32(AD_BYTE_F | (3 << AD_ALPHA_C_SHIFT) |
+               (0 << AD_BLUE_C_SHIFT) | (1 << AD_GREEN_C_SHIFT) |
+               (2 << AD_RED_C_SHIFT) | (8 << AD_COMP_3_SHIFT) |
+               (8 << AD_COMP_2_SHIFT) | (8 << AD_COMP_1_SHIFT) |
+               (8 << AD_COMP_0_SHIFT) | (3 << AD_PIXEL_S_SHIFT));
+
+       temp = in_8(&pixis->brdcfg1);
+
+       monitor_port = getenv("monitor");
+       if (!strncmp(monitor_port, "1", 1)) { /* 1 - Single link LVDS */
+               *xres = 1024;
+               *yres = 768;
+               /* Enable the DFP port, disable the DVI and the backlight */
+               temp &= ~(PX_BRDCFG1_DVIEN | PX_BRDCFG1_BACKLIGHT);
+               temp |= PX_BRDCFG1_DFPEN;
+       } else {        /* DVI */
+               *xres = 1280;
+               *yres = 1024;
+               /* Enable the DVI port, disable the DFP and the backlight */
+               temp &= ~(PX_BRDCFG1_DFPEN | PX_BRDCFG1_BACKLIGHT);
+               temp |= PX_BRDCFG1_DVIEN;
+       }
+
+       out_8(&pixis->brdcfg1, temp);
+
+       /*
+        * Route the LAD pins to the DIU.  This will disable access to the eLBC,
+        * which means we won't be able to read/write any NOR flash addresses!
+        */
+       out_8(&pixis->brdcfg0, in_8(&pixis->brdcfg0) | PX_BRDCFG0_ELBC_DIU);
+       /* we must do the dummy read from eLBC to sync the write as above */
+       in_8(&pixis->brdcfg0);
+
+       /* Setting PMUXCR to switch to DVI from ELBC */
+       /* Set pmuxcr to allow both i2c1 and i2c2 */
+       clrsetbits_be32(&gur->pmuxcr, 0xc0000000, 0x40000000);
+       in_be32(&gur->pmuxcr);
+
+       return fsl_diu_init(*xres, pixel_format, 0);
+}

diff --git a/include/configs/P1022DS.h b/include/configs/P1022DS.h
index dcaca2b617dd32185b1a9dad3ccfdacb711f6480..8e0117f6a1b732bd3912571a78589360048abc0f 100644 (file)
--- a/include/configs/P1022DS.h
+++ b/include/configs/P1022DS.h
@@ -177,14 +177,17 @@
 #define CONFIG_SYS_HUSH_PARSER
 #define CONFIG_SYS_PROMPT_HUSH_PS2 "> "
 
-#define CONFIG_FSL_DIU_FB
-#define CONFIG_SYS_DIU_ADDR    (CONFIG_SYS_CCSRBAR + 0x10000)
-
 /* Video */
-/* #define CONFIG_VIDEO */
-#ifdef CONFIG_VIDEO
+#undef CONFIG_FSL_DIU_FB
+
+#ifdef CONFIG_FSL_DIU_FB
+#define CONFIG_SYS_DIU_ADDR    (CONFIG_SYS_CCSRBAR + 0x10000)
+#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
 #endif
 
 /*