/* $OpenBSD: ibm525reg.h,v 1.1 2005/07/19 09:34:14 miod Exp $ */ /* * Copyright (c) 2005, Miodrag Vallat. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * IBM RGB525 Ramdac registers */ #define IBM525_REVISION 0x00 #define IBM525_ID 0x01 /* Miscellaneous clock control */ #define IBM525_MISC_CLOCK 0x02 #define MC_B24P_PLL 0x00 #define MC_B24P_SCLK 0x20 #define MC_DDOT_DIV_1 0x00 /* (VRAM size / 1) bpp */ #define MC_DDOT_DIV_2 0x02 /* (VRAM size / 2) bpp */ #define MC_DDOT_DIV_4 0x04 /* (VRAM size / 4) bpp */ #define MC_DDOT_DIV_8 0x06 /* (VRAM size / 8) bpp */ #define MC_DDOT_DIV_16 0x08 /* (VRAM size / 16) bpp */ #define MC_DDOT_DIV_MASK 0x0e #define MC_PLL_ENABLE 0x01 /* Sync control */ #define IBM525_SYNC 0x03 #define S_CSYN_INVERT 0x40 /* Composite sync invert */ #define S_VSYN_INVERT 0x20 /* Vertical sync invert (positive) */ #define S_HSYN_INVERT 0x10 /* Horizontal sync invert (positive) */ #define S_VSYN_NORMAL 0x00 #define S_VSYN_HIGH 0x04 #define S_VSYN_LOW 0x08 #define S_VSYN_DISABLE 0x0c #define S_VSYN_MASK 0x0c #define S_HSYN_NORMAL 0x00 #define S_HSYN_HIGH 0x01 #define S_HSYN_LOW 0x02 #define S_HSYN_DISABLE 0x03 #define S_HSYN_MASK 0x03 /* Horizontal sync position */ #define IBM525_HSYNC_POS 0x04 /* Power management */ #define IBM525_POWER 0x05 #define P_SCLK_DISABLE 0x10 #define P_DDOT_DISABLE 0x08 #define P_SYNC_DISABLE 0x04 #define P_ICLK_DISABLE 0x02 /* Disable internal DAC clock */ #define P_DAC_PWR_DISABLE 0x01 /* Disable internal DAC power */ /* DAC operation */ #define IBM525_DAC_OP 0x06 #define DO_SOG 0x08 /* Sync on Green */ #define DO_FAST_SLEW 0x02 /* fast (>= 20 MHz) pixel clock */ #define DO_BLANK_BR 0x04 /* blank blue and red channels */ #define DO_PEDESTAL 0x01 /* Palette control */ #define IBM525_PALETTE 0x07 /* System clock control */ #define IBM525_SYSCLK 0x08 #define SC_ENABLE 0x01 /* Pixel format */ #define IBM525_PIXEL 0x0a #define PIX_4BPP 0x02 #define PIX_8BPP 0x03 #define PIX_16BPP 0x04 #define PIX_24BPP 0x05 #define PIX_32BPP 0x06 /* 8bpp pixel format */ #define IBM525_PF8 0x0b #define PF8_INDIRECT 0x00 #define PF8_DIRECT 0x01 /* 16bpp pixel format */ #define IBM525_PF16 0x0c #define PF16_INDIRECT 0x00 #define PF16_DIRECT 0xc0 #define PF16_LINEAR 0x04 #define PF16_555 0x00 /* 5:5:5 15bpp */ #define PF16_565 0x02 /* 5:6:5 15bpp */ /* 24bpp pixel format */ #define IBM525_PF24 0x0d #define PF24_INDIRECT 0x00 #define PF24_DIRECT 0x01 /* 32bpp pixel format */ #define IBM525_PF32 0x0e #define PF32_INDIRECT 0x00 #define PF32_DIRECT 0x03 #define PF32_BYPASS 0x00 #define PF32_LOOKUP 0x04 /* Pixel PLL control #1 */ #define IBM525_PLL1 0x10 #define P1_CLK_REF 0x00 #define P1_CLK_EXT 0x10 #define P1_SRC_EXT_F 0x00 /* Use F registers for timing */ #define P1_SRC_EXT_MN 0x01 /* Use M:N registers for timing */ #define P1_SRC_DIRECT_F 0x02 /* Use F registers for timing */ #define P1_SRC_DIRECT_MN 0x03 /* Use M:N registers for timing */ /* Pixel PLL control #2 */ #define IBM525_PLL2 0x11 /* Fixed PLL reference */ #define IBM525_PLL_FIXED_REF 0x14 /* PLL reference divider */ #define IBM525_PLL_REF_DIV 0x15 /* PLL VCO divider */ #define IBM525_PLL_VCO_DIV 0x16 /* N0-N15 */ #define IBM525_F(n) (0x20 + (n)) /* Miscellaneous control #1 */ #define IBM525_MISC1 0x70 #define M1_VRAM_32 0x00 #define M1_VRAM_64 0x01 #define M1_VRAM_SIZE_MASK 0x01 #define M1_SENSE_DISABLE 0x10 /* Miscellaneous control #2 */ #define IBM525_MISC2 0x71 #define M2_PCLK_LOCAL 0x00 #define M2_PCLK_PLL 0x40 #define M2_PCLK_EXT 0x80 #define M2_PCLK_MASK 0xc0 #define M2_PALETTE_6 0x00 /* VGA compatible 6bit palette */ #define M2_PALETTE_8 0x04 /* 8bit palette */ #define M2_PALETTE_MASK 0x04 #define M2_MODE_VRAM 0x01 #define M2_MODE_VGA 0x00 #define M2_MODE_MASK 0x01 /* Miscellaneous control #3 */ #define IBM525_MISC3 0x72 #define M3_SWAP_BR 0x80 /* swap blue and red */ #define M3_SWAP_WORDS 0x10 #define M3_SWAP_NIBBLES 0x02 /* Miscellaneous control #4 */ #define IBM525_MISC4 0x73 #define M4_INVERT_DCLK 0x10 #define M4_FAST 0x20 /* Fast (>= 50 MHz) pixel clock */ /* * Pixel clock encoding */ #define MHZ_TO_PLL(m) \ (m) < 32 ? 0x00 | (4 * (m) - 65) : \ (m) < 64 ? 0x40 | (2 * (m) - 65) : \ (m) < 128 ? 0x80 | ((m) - 65) : \ 0xc0 | ((m) / 2 - 65)