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/* Copyright (c) 2005 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Neither the name of the Advanced Micro Devices, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
* */
/*
* File Contents: This file panel functions which query for the BIOS for
* current FP Paramters.
*
* SubModule: Geode FlatPanel library
* */
#include "panel.h"
#if defined(_WIN32) /* windows */
extern unsigned long gfx_cpu_version;
extern void gfx_outw(unsigned short port, unsigned short data);
extern unsigned short gfx_inw(unsigned short port);
#endif
#define SOFTVGA_DISPLAY_ENABLE 0x50
#define SOFTVGA_FPRESOLUTION 0x52
#define SOFTVGA_FPCLOCKFREQUENCY 0x54
/* SOFTVG VIRTUAL REGISTER DEFINITIONS */
#define VR_INDEX 0xAC1C
#define VR_DATA 0xAC1E
#define VR_UNLOCK 0xFC53
#define VRC_VG 0x0002 /* SoftVG Virtual Register Class */
#define VG_MEM_SIZE 0x0000 /* MemSize Virtual Register */
#define FP_DETECT_MASK 0x8000
#define VG_FP_TYPE 0x0002 /* Flat Panel Info Virtual Register */
#define FP_DEV_MASK 0x0003 /* Flat Panel type */
#define FP_TYPE_SSTN 0x0000 /* SSTN panel type value */
#define FP_TYPE_DSTN 0x0001 /* DSTN panel type value */
#define FP_TYPE_TFT 0x0002 /* TFT panel type value */
#define FP_TYPE_LVDS 0x0003 /* LVDS panel type value */
#define FP_RESOLUTION_MASK 0x0038
#define FP_RES_6X4 0x0000 /* 640x480 resolution value */
#define FP_RES_8X6 0x0008 /* 800x600 resolution value */
#define FP_RES_10X7 0x0010 /* 1024x768 resolution value */
#define FP_RES_11X8 0x0018 /* 1152x864 resolution value */
#define FP_RES_12X10 0x0020 /* 1280x1024 resolution value */
#define FP_RES_16X12 0x0028 /* 1600x1200 resolution value */
#define FP_WIDTH_MASK 0x01C0
#define FP_WIDTH_8 0x0000 /* 8 bit data bus width */
#define FP_WIDTH_9 0x0040 /* 9 bit data bus width */
#define FP_WIDTH_12 0x0080 /* 12 bit data bus width */
#define FP_WIDTH_18 0x00C0 /* 18 bit data bus width */
#define FP_WIDTH_24 0x0100 /* 24 bit data bus width */
#define FP_WIDTH_16 0x0140 /* 16 bit data bus width - 16 bit
* Mono DSTN only */
#define FP_COLOR_MASK 0x0200
#define FP_COLOR_COLOR 0x0000 /* Color panel */
#define FP_COLOR_MONO 0x0200 /* Mono Panel */
#define FP_PPC_MASK 0x0400
#define FP_PPC_1PPC 0x0000 /* One pixel per clock */
#define FP_PPC_2PPC 0x0400 /* Two pixels per clock */
#define FP_HPOL_MASK 0x0800
#define FP_H_POL_LGH 0x0000 /* HSync at panel, normally low,
* active high */
#define FP_H_POL_HGL 0x0800 /* HSync at panel, normally high,
* active low */
#define FP_VPOL_MASK 0x1000
#define FP_V_POL_LGH 0x0000 /* VSync at panel, normally low,
* active high */
#define FP_V_POL_HGL 0x1000 /* VSync at panel, normally high,
* active low */
#define FP_REF_MASK 0xE000
#define FP_REF_60 0x0000 /* 60Hz refresh rate */
#define FP_REF_70 0x2000 /* 70Hz refresh rate */
#define FP_REF_72 0x4000 /* 72Hz refresh rate */
#define FP_REF_75 0x6000 /* 75Hz refresh rate */
#define FP_REF_85 0x8000 /* 85Hz refresh rate */
#define FP_REF_90 0xA000 /* 90Hz refresh rate */
#define FP_REF_100 0xC000 /* 100Hz refresh rate */
/*-----------------------------------------------------------------
* Pnl_IsPanelEnabledInBIOS
*
* Description: This function specifies whether the panel is enabled
* by the BIOS or not.
* parameters: none.
* return: 1 - Enabled, 0 - Disabled
*-----------------------------------------------------------------*/
int
Pnl_IsPanelEnabledInBIOS(void)
{
unsigned char ret = 0;
if ((gfx_cpu_version & 0xFF) == GFX_CPU_REDCLOUD) {
unsigned short data;
gfx_outw(VR_INDEX, VR_UNLOCK);
gfx_outw(VR_INDEX, (VRC_VG << 8) | VG_MEM_SIZE);
data = gfx_inw(VR_DATA);
if (data & FP_DETECT_MASK)
ret = 1;
}
else {
unsigned short crtcindex, crtcdata;
crtcindex = (gfx_inb(0x3CC) & 0x01) ? 0x3D4 : 0x3B4;
crtcdata = crtcindex + 1;
/* CHECK DisplayEnable Reg in SoftVGA */
gfx_outb(crtcindex, (unsigned char) SOFTVGA_DISPLAY_ENABLE);
ret = gfx_inb(crtcdata);
}
return (ret & 0x1);
}
/*-----------------------------------------------------------------
* Pnl_GetPanelInfoFromBIOS
*
* Description: This function queries the panel information from
* the BIOS.
* parameters:
* xres: width of the panel configured
* yres: height of the panel configured
* bpp: depth of the panel configured
* hz: vertical frequency of the panel configured
* return: none
*-----------------------------------------------------------------*/
void
Pnl_GetPanelInfoFromBIOS(int *xres, int *yres, int *bpp, int *hz)
{
unsigned short crtcindex, crtcdata;
unsigned short ret;
if ((gfx_cpu_version & 0xFF) == GFX_CPU_REDCLOUD) {
gfx_outw(VR_INDEX, VR_UNLOCK);
gfx_outw(VR_INDEX, (VRC_VG << 8) | VG_FP_TYPE);
ret = gfx_inw(VR_DATA);
switch (ret & FP_RESOLUTION_MASK) {
case FP_RES_6X4:
*xres = 640;
*yres = 480;
break;
case FP_RES_8X6:
*xres = 800;
*yres = 600;
break;
case FP_RES_10X7:
*xres = 1024;
*yres = 768;
break;
case FP_RES_11X8:
*xres = 1152;
*yres = 864;
break;
case FP_RES_12X10:
*xres = 1280;
*yres = 1024;
break;
case FP_RES_16X12:
*xres = 1600;
*yres = 1200;
break;
}
switch (ret & FP_WIDTH_MASK) {
case FP_WIDTH_8:
*bpp = 8;
break;
case FP_WIDTH_9:
*bpp = 9;
break;
case FP_WIDTH_12:
*bpp = 12;
break;
case FP_WIDTH_18:
*bpp = 18;
break;
case FP_WIDTH_24:
*bpp = 24;
break;
case FP_WIDTH_16:
*bpp = 16;
break;
}
switch (ret & FP_REF_MASK) {
case FP_REF_60:
*hz = 60;
break;
case FP_REF_70:
*hz = 70;
break;
case FP_REF_72:
*hz = 72;
break;
case FP_REF_75:
*hz = 75;
break;
case FP_REF_85:
*hz = 85;
break;
case FP_REF_90:
*hz = 90;
break;
case FP_REF_100:
*hz = 100;
break;
}
}
else {
crtcindex = (gfx_inb(0x3CC) & 0x01) ? 0x3D4 : 0x3B4;
crtcdata = crtcindex + 1;
/* CHECK FPResolution Reg in SoftVGA */
gfx_outb(crtcindex, (unsigned char) SOFTVGA_FPRESOLUTION);
ret = gfx_inb(crtcdata);
switch (ret & 0x3) {
case 0:
*xres = 640;
*yres = 480;
break;
case 1:
*xres = 800;
*yres = 600;
break;
case 2:
*xres = 1024;
*yres = 768;
break;
}
switch ((ret >> 4) & 0x3) {
case 0:
*bpp = 12;
break;
case 1:
*bpp = 18;
break;
case 2:
*bpp = 16;
break;
case 3:
*bpp = 8;
break;
}
/* CHECK FPClockFrequency Reg in SoftVGA */
gfx_outb(crtcindex, (unsigned char) SOFTVGA_FPCLOCKFREQUENCY);
*hz = gfx_inb(crtcdata);
}
}
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