release/src-rt-6.x.4708/linux/linux-2.6.36/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 <linux/via-core.h>
  23 #include "global.h"
  24
  25 void viafb_get_device_support_state(u32 *support_state)
  26 {
  27         *support_state = CRT_Device;
  28
  29         if (viaparinfo->chip_info->tmds_chip_info.tmds_chip_name == VT1632_TMDS)
  30                 *support_state |= DVI_Device;
  31
  32         if (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name == VT1631_LVDS)
  33                 *support_state |= LCD_Device;
  34 }
  35
  36 void viafb_get_device_connect_state(u32 *connect_state)
  37 {
  38         bool mobile = false;
  39
  40         *connect_state = CRT_Device;
  41
  42         if (viafb_dvi_sense())
  43                 *connect_state |= DVI_Device;
  44
  45         viafb_lcd_get_mobile_state(&mobile);
  46         if (mobile)
  47                 *connect_state |= LCD_Device;
  48 }
  49
  50 bool viafb_lcd_get_support_expand_state(u32 xres, u32 yres)
  51 {
  52         unsigned int support_state = 0;
  53
  54         switch (viafb_lcd_panel_id) {
  55         case LCD_PANEL_ID0_640X480:
  56                 if ((xres < 640) && (yres < 480))
  57                         support_state = true;
  58                 break;
  59
  60         case LCD_PANEL_ID1_800X600:
  61                 if ((xres < 800) && (yres < 600))
  62                         support_state = true;
  63                 break;
  64
  65         case LCD_PANEL_ID2_1024X768:
  66                 if ((xres < 1024) && (yres < 768))
  67                         support_state = true;
  68                 break;
  69
  70         case LCD_PANEL_ID3_1280X768:
  71                 if ((xres < 1280) && (yres < 768))
  72                         support_state = true;
  73                 break;
  74
  75         case LCD_PANEL_ID4_1280X1024:
  76                 if ((xres < 1280) && (yres < 1024))
  77                         support_state = true;
  78                 break;
  79
  80         case LCD_PANEL_ID5_1400X1050:
  81                 if ((xres < 1400) && (yres < 1050))
  82                         support_state = true;
  83                 break;
  84
  85         case LCD_PANEL_ID6_1600X1200:
  86                 if ((xres < 1600) && (yres < 1200))
  87                         support_state = true;
  88                 break;
  89
  90         case LCD_PANEL_ID7_1366X768:
  91                 if ((xres < 1366) && (yres < 768))
  92                         support_state = true;
  93                 break;
  94
  95         case LCD_PANEL_ID8_1024X600:
  96                 if ((xres < 1024) && (yres < 600))
  97                         support_state = true;
  98                 break;
  99
 100         case LCD_PANEL_ID9_1280X800:
 101                 if ((xres < 1280) && (yres < 800))
 102                         support_state = true;
 103                 break;
 104
 105         case LCD_PANEL_IDA_800X480:
 106                 if ((xres < 800) && (yres < 480))
 107                         support_state = true;
 108                 break;
 109
 110         case LCD_PANEL_IDB_1360X768:
 111                 if ((xres < 1360) && (yres < 768))
 112                         support_state = true;
 113                 break;
 114
 115         case LCD_PANEL_IDC_480X640:
 116                 if ((xres < 480) && (yres < 640))
 117                         support_state = true;
 118                 break;
 119
 120         default:
 121                 support_state = false;
 122                 break;
 123         }
 124
 125         return support_state;
 126 }
 127
 128 /*====================================================================*/
 129 /*                      Gamma Function Implementation*/
 130 /*====================================================================*/
 131
 132 void viafb_set_gamma_table(int bpp, unsigned int *gamma_table)
 133 {
 134         int i, sr1a;
 135         int active_device_amount = 0;
 136         int device_status = viafb_DeviceStatus;
 137
 138         for (i = 0; i < sizeof(viafb_DeviceStatus) * 8; i++) {
 139                 if (device_status & 1)
 140                         active_device_amount++;
 141                 device_status >>= 1;
 142         }
 143
 144         /* 8 bpp mode can't adjust gamma */
 145         if (bpp == 8)
 146                 return ;
 147
 148         /* Enable Gamma */
 149         switch (viaparinfo->chip_info->gfx_chip_name) {
 150         case UNICHROME_CLE266:
 151         case UNICHROME_K400:
 152                 viafb_write_reg_mask(SR16, VIASR, 0x80, BIT7);
 153                 break;
 154
 155         case UNICHROME_K800:
 156         case UNICHROME_PM800:
 157         case UNICHROME_CN700:
 158         case UNICHROME_CX700:
 159         case UNICHROME_K8M890:
 160         case UNICHROME_P4M890:
 161         case UNICHROME_P4M900:
 162                 viafb_write_reg_mask(CR33, VIACR, 0x80, BIT7);
 163                 break;
 164         }
 165         sr1a = (unsigned int)viafb_read_reg(VIASR, SR1A);
 166         viafb_write_reg_mask(SR1A, VIASR, 0x0, BIT0);
 167
 168         /* Fill IGA1 Gamma Table */
 169         outb(0, LUT_INDEX_WRITE);
 170         for (i = 0; i < 256; i++) {
 171                 outb(gamma_table[i] >> 16, LUT_DATA);
 172                 outb(gamma_table[i] >> 8 & 0xFF, LUT_DATA);
 173                 outb(gamma_table[i] & 0xFF, LUT_DATA);
 174         }
 175
 176         /* If adjust Gamma value in SAMM, fill IGA1,
 177            IGA2 Gamma table simultanous. */
 178         /* Switch to IGA2 Gamma Table */
 179         if ((active_device_amount > 1) &&
 180                 !((viaparinfo->chip_info->gfx_chip_name ==
 181                 UNICHROME_CLE266) &&
 182                 (viaparinfo->chip_info->gfx_chip_revision < 15))) {
 183                 viafb_write_reg_mask(SR1A, VIASR, 0x01, BIT0);
 184                 viafb_write_reg_mask(CR6A, VIACR, 0x02, BIT1);
 185
 186                 /* Fill IGA2 Gamma Table */
 187                 outb(0, LUT_INDEX_WRITE);
 188                 for (i = 0; i < 256; i++) {
 189                         outb(gamma_table[i] >> 16, LUT_DATA);
 190                         outb(gamma_table[i] >> 8 & 0xFF, LUT_DATA);
 191                         outb(gamma_table[i] & 0xFF, LUT_DATA);
 192                 }
 193         }
 194         viafb_write_reg(SR1A, VIASR, sr1a);
 195 }
 196
 197 void viafb_get_gamma_table(unsigned int *gamma_table)
 198 {
 199         unsigned char color_r, color_g, color_b;
 200         unsigned char sr1a = 0;
 201         int i;
 202
 203         /* Enable Gamma */
 204         switch (viaparinfo->chip_info->gfx_chip_name) {
 205         case UNICHROME_CLE266:
 206         case UNICHROME_K400:
 207                 viafb_write_reg_mask(SR16, VIASR, 0x80, BIT7);
 208                 break;
 209
 210         case UNICHROME_K800:
 211         case UNICHROME_PM800:
 212         case UNICHROME_CN700:
 213         case UNICHROME_CX700:
 214         case UNICHROME_K8M890:
 215         case UNICHROME_P4M890:
 216         case UNICHROME_P4M900:
 217                 viafb_write_reg_mask(CR33, VIACR, 0x80, BIT7);
 218                 break;
 219         }
 220         sr1a = viafb_read_reg(VIASR, SR1A);
 221         viafb_write_reg_mask(SR1A, VIASR, 0x0, BIT0);
 222
 223         /* Reading gamma table to get color value */
 224         outb(0, LUT_INDEX_READ);
 225         for (i = 0; i < 256; i++) {
 226                 color_r = inb(LUT_DATA);
 227                 color_g = inb(LUT_DATA);
 228                 color_b = inb(LUT_DATA);
 229                 gamma_table[i] =
 230                     ((((u32) color_r) << 16) |
 231                      (((u16) color_g) << 8)) | color_b;
 232         }
 233         viafb_write_reg(SR1A, VIASR, sr1a);
 234 }
 235
 236 void viafb_get_gamma_support_state(int bpp, unsigned int *support_state)
 237 {
 238         if (bpp == 8)
 239                 *support_state = None_Device;
 240         else
 241                 *support_state = CRT_Device | DVI_Device | LCD_Device;
 242 }