SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/video/via/via_utility.c

   1 /*
   2  * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
   3  * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
   4
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public
   7  * License as published by the Free Software Foundation;
   8  * either version 2, or (at your option) any later version.
   9
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
  12  * the implied warranty of MERCHANTABILITY or FITNESS FOR
  13  * A PARTICULAR PURPOSE.See the GNU General Public License
  14  * for more details.
  15
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc.,
  19  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20  */
  21
  22 #include "global.h"
  23
  24 void viafb_get_device_support_state(u32 *support_state)
  25 {
  26         *support_state = CRT_Device;
  27
  28         if (viaparinfo->chip_info->tmds_chip_info.tmds_chip_name == VT1632_TMDS)
  29                 *support_state |= DVI_Device;
  30
  31         if (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name == VT1631_LVDS)
  32                 *support_state |= LCD_Device;
  33 }
  34
  35 void viafb_get_device_connect_state(u32 *connect_state)
  36 {
  37         bool mobile = false;
  38
  39         *connect_state = CRT_Device;
  40
  41         if (viafb_dvi_sense())
  42                 *connect_state |= DVI_Device;
  43
  44         viafb_lcd_get_mobile_state(&mobile);
  45         if (mobile)
  46                 *connect_state |= LCD_Device;
  47 }
  48
  49 bool viafb_lcd_get_support_expand_state(u32 xres, u32 yres)
  50 {
  51         unsigned int support_state = 0;
  52
  53         switch (viafb_lcd_panel_id) {
  54         case LCD_PANEL_ID0_640X480:
  55                 if ((xres < 640) && (yres < 480))
  56                         support_state = true;
  57                 break;
  58
  59         case LCD_PANEL_ID1_800X600:
  60                 if ((xres < 800) && (yres < 600))
  61                         support_state = true;
  62                 break;
  63
  64         case LCD_PANEL_ID2_1024X768:
  65                 if ((xres < 1024) && (yres < 768))
  66                         support_state = true;
  67                 break;
  68
  69         case LCD_PANEL_ID3_1280X768:
  70                 if ((xres < 1280) && (yres < 768))
  71                         support_state = true;
  72                 break;
  73
  74         case LCD_PANEL_ID4_1280X1024:
  75                 if ((xres < 1280) && (yres < 1024))
  76                         support_state = true;
  77                 break;
  78
  79         case LCD_PANEL_ID5_1400X1050:
  80                 if ((xres < 1400) && (yres < 1050))
  81                         support_state = true;
  82                 break;
  83
  84         case LCD_PANEL_ID6_1600X1200:
  85                 if ((xres < 1600) && (yres < 1200))
  86                         support_state = true;
  87                 break;
  88
  89         case LCD_PANEL_ID7_1366X768:
  90                 if ((xres < 1366) && (yres < 768))
  91                         support_state = true;
  92                 break;
  93
  94         case LCD_PANEL_ID8_1024X600:
  95                 if ((xres < 1024) && (yres < 600))
  96                         support_state = true;
  97                 break;
  98
  99         case LCD_PANEL_ID9_1280X800:
 100                 if ((xres < 1280) && (yres < 800))
 101                         support_state = true;
 102                 break;
 103
 104         case LCD_PANEL_IDA_800X480:
 105                 if ((xres < 800) && (yres < 480))
 106                         support_state = true;
 107                 break;
 108
 109         case LCD_PANEL_IDB_1360X768:
 110                 if ((xres < 1360) && (yres < 768))
 111                         support_state = true;
 112                 break;
 113
 114         case LCD_PANEL_IDC_480X640:
 115                 if ((xres < 480) && (yres < 640))
 116                         support_state = true;
 117                 break;
 118
 119         default:
 120                 support_state = false;
 121                 break;
 122         }
 123
 124         return support_state;
 125 }
 126
 127 /*====================================================================*/
 128 /*                      Gamma Function Implementation*/
 129 /*====================================================================*/
 130
 131 void viafb_set_gamma_table(int bpp, unsigned int *gamma_table)
 132 {
 133         int i, sr1a;
 134         int active_device_amount = 0;
 135         int device_status = viafb_DeviceStatus;
 136
 137         for (i = 0; i < sizeof(viafb_DeviceStatus) * 8; i++) {
 138                 if (device_status & 1)
 139                         active_device_amount++;
 140                 device_status >>= 1;
 141         }
 142
 143         /* 8 bpp mode can't adjust gamma */
 144         if (bpp == 8)
 145                 return ;
 146
 147         /* Enable Gamma */
 148         switch (viaparinfo->chip_info->gfx_chip_name) {
 149         case UNICHROME_CLE266:
 150         case UNICHROME_K400:
 151                 viafb_write_reg_mask(SR16, VIASR, 0x80, BIT7);
 152                 break;
 153
 154         case UNICHROME_K800:
 155         case UNICHROME_PM800:
 156         case UNICHROME_CN700:
 157         case UNICHROME_CX700:
 158         case UNICHROME_K8M890:
 159         case UNICHROME_P4M890:
 160         case UNICHROME_P4M900:
 161                 viafb_write_reg_mask(CR33, VIACR, 0x80, BIT7);
 162                 break;
 163         }
 164         sr1a = (unsigned int)viafb_read_reg(VIASR, SR1A);
 165         viafb_write_reg_mask(SR1A, VIASR, 0x0, BIT0);
 166
 167         /* Fill IGA1 Gamma Table */
 168         outb(0, LUT_INDEX_WRITE);
 169         for (i = 0; i < 256; i++) {
 170                 outb(gamma_table[i] >> 16, LUT_DATA);
 171                 outb(gamma_table[i] >> 8 & 0xFF, LUT_DATA);
 172                 outb(gamma_table[i] & 0xFF, LUT_DATA);
 173         }
 174
 175         /* If adjust Gamma value in SAMM, fill IGA1,
 176            IGA2 Gamma table simultanous. */
 177         /* Switch to IGA2 Gamma Table */
 178         if ((active_device_amount > 1) &&
 179                 !((viaparinfo->chip_info->gfx_chip_name ==
 180                 UNICHROME_CLE266) &&
 181                 (viaparinfo->chip_info->gfx_chip_revision < 15))) {
 182                 viafb_write_reg_mask(SR1A, VIASR, 0x01, BIT0);
 183                 viafb_write_reg_mask(CR6A, VIACR, 0x02, BIT1);
 184
 185                 /* Fill IGA2 Gamma Table */
 186                 outb(0, LUT_INDEX_WRITE);
 187                 for (i = 0; i < 256; i++) {
 188                         outb(gamma_table[i] >> 16, LUT_DATA);
 189                         outb(gamma_table[i] >> 8 & 0xFF, LUT_DATA);
 190                         outb(gamma_table[i] & 0xFF, LUT_DATA);
 191                 }
 192         }
 193         viafb_write_reg(SR1A, VIASR, sr1a);
 194 }
 195
 196 void viafb_get_gamma_table(unsigned int *gamma_table)
 197 {
 198         unsigned char color_r, color_g, color_b;
 199         unsigned char sr1a = 0;
 200         int i;
 201
 202         /* Enable Gamma */
 203         switch (viaparinfo->chip_info->gfx_chip_name) {
 204         case UNICHROME_CLE266:
 205         case UNICHROME_K400:
 206                 viafb_write_reg_mask(SR16, VIASR, 0x80, BIT7);
 207                 break;
 208
 209         case UNICHROME_K800:
 210         case UNICHROME_PM800:
 211         case UNICHROME_CN700:
 212         case UNICHROME_CX700:
 213         case UNICHROME_K8M890:
 214         case UNICHROME_P4M890:
 215         case UNICHROME_P4M900:
 216                 viafb_write_reg_mask(CR33, VIACR, 0x80, BIT7);
 217                 break;
 218         }
 219         sr1a = viafb_read_reg(VIASR, SR1A);
 220         viafb_write_reg_mask(SR1A, VIASR, 0x0, BIT0);
 221
 222         /* Reading gamma table to get color value */
 223         outb(0, LUT_INDEX_READ);
 224         for (i = 0; i < 256; i++) {
 225                 color_r = inb(LUT_DATA);
 226                 color_g = inb(LUT_DATA);
 227                 color_b = inb(LUT_DATA);
 228                 gamma_table[i] =
 229                     ((((u32) color_r) << 16) |
 230                      (((u16) color_g) << 8)) | color_b;
 231         }
 232         viafb_write_reg(SR1A, VIASR, sr1a);
 233 }
 234
 235 void viafb_get_gamma_support_state(int bpp, unsigned int *support_state)
 236 {
 237         if (bpp == 8)
 238                 *support_state = None_Device;
 239         else
 240                 *support_state = CRT_Device | DVI_Device | LCD_Device;
 241 }