diff options
Diffstat (limited to 'drivers/video/sm501.c')
| -rw-r--r-- | drivers/video/sm501.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/drivers/video/sm501.c b/drivers/video/sm501.c new file mode 100644 index 000000000..23db02cd1 --- /dev/null +++ b/drivers/video/sm501.c @@ -0,0 +1,150 @@ +/* + * (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 */ |