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Diffstat (limited to 'drivers/video/sm501.c')
-rw-r--r--drivers/video/sm501.c150
1 files changed, 150 insertions, 0 deletions
diff --git a/drivers/video/sm501.c b/drivers/video/sm501.c
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+++ b/drivers/video/sm501.c
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+/*
+ * (C) Copyright 2002
+ * Stäubli Faverges - <www.staubli.com>
+ * Pierre AUBERT p.aubert@staubli.com
+ *
+ * (C) Copyright 2005
+ * Martin Krause TQ-Systems GmbH martin.krause@tqs.de
+ *
+ * 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
+ */
+
+/*
+ * Basic video support for SMI SM501 "Voyager" graphic controller
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_VIDEO_SM501
+
+#include <video_fb.h>
+#include <sm501.h>
+
+#define read8(ptrReg) \
+ *(volatile unsigned char *)(sm501.isaBase + ptrReg)
+
+#define write8(ptrReg,value) \
+ *(volatile unsigned char *)(sm501.isaBase + ptrReg) = value
+
+#define read16(ptrReg) \
+ (*(volatile unsigned short *)(sm501.isaBase + ptrReg))
+
+#define write16(ptrReg,value) \
+ (*(volatile unsigned short *)(sm501.isaBase + ptrReg) = value)
+
+#define read32(ptrReg) \
+ (*(volatile unsigned int *)(sm501.isaBase + ptrReg))
+
+#define write32(ptrReg, value) \
+ (*(volatile unsigned int *)(sm501.isaBase + ptrReg) = value)
+
+GraphicDevice sm501;
+
+/*-----------------------------------------------------------------------------
+ * SmiSetRegs --
+ *-----------------------------------------------------------------------------
+ */
+static void SmiSetRegs (void)
+{
+ /*
+ * The content of the chipset register depends on the board (clocks,
+ * ...)
+ */
+ const SMI_REGS *preg = board_get_regs ();
+ while (preg->Index) {
+ write32 (preg->Index, preg->Value);
+ /*
+ * Insert a delay between
+ */
+ udelay (1000);
+ preg ++;
+ }
+}
+
+/*-----------------------------------------------------------------------------
+ * video_hw_init --
+ *-----------------------------------------------------------------------------
+ */
+void *video_hw_init (void)
+{
+ unsigned int *vm, i;
+
+ memset (&sm501, 0, sizeof (GraphicDevice));
+
+ /*
+ * Initialization of the access to the graphic chipset Retreive base
+ * address of the chipset (see board/RPXClassic/eccx.c)
+ */
+ if ((sm501.isaBase = board_video_init ()) == 0) {
+ return (NULL);
+ }
+
+ if ((sm501.frameAdrs = board_video_get_fb ()) == 0) {
+ return (NULL);
+ }
+
+ sm501.winSizeX = board_get_width ();
+ sm501.winSizeY = board_get_height ();
+
+#if defined(CONFIG_VIDEO_SM501_8BPP)
+ sm501.gdfIndex = GDF__8BIT_INDEX;
+ sm501.gdfBytesPP = 1;
+
+#elif defined(CONFIG_VIDEO_SM501_16BPP)
+ sm501.gdfIndex = GDF_16BIT_565RGB;
+ sm501.gdfBytesPP = 2;
+
+#elif defined(CONFIG_VIDEO_SM501_32BPP)
+ sm501.gdfIndex = GDF_32BIT_X888RGB;
+ sm501.gdfBytesPP = 4;
+#else
+#error Unsupported SM501 BPP
+#endif
+
+ sm501.memSize = sm501.winSizeX * sm501.winSizeY * sm501.gdfBytesPP;
+
+ /* Load Smi registers */
+ SmiSetRegs ();
+
+ /* (see board/RPXClassic/RPXClassic.c) */
+ board_validate_screen (sm501.isaBase);
+
+ /* Clear video memory */
+ i = sm501.memSize/4;
+ vm = (unsigned int *)sm501.frameAdrs;
+ while(i--)
+ *vm++ = 0;
+
+ return (&sm501);
+}
+
+/*-----------------------------------------------------------------------------
+ * video_set_lut --
+ *-----------------------------------------------------------------------------
+ */
+void video_set_lut (
+ unsigned int index, /* color number */
+ unsigned char r, /* red */
+ unsigned char g, /* green */
+ unsigned char b /* blue */
+ )
+{
+}
+
+#endif /* CONFIG_VIDEO_SM501 */