1 /*-*- linux-c -*- 2 * linux/drivers/video/i810_dvt.c -- Intel 810 Discrete Video Timings (Intel) 3 * 4 * Copyright (C) 2001 Antonino Daplas<adaplas@pol.net> 5 * All Rights Reserved 6 * 7 * 8 * This file is subject to the terms and conditions of the GNU General Public 9 * License. See the file COPYING in the main directory of this archive for 10 * more details. 11 */ 12 13 #include <linux/kernel.h> 14 15 #include "i810_regs.h" 16 #include "i810.h" 17 #include "i810_main.h" 18 19 struct mode_registers std_modes[] = { 20 /* 640x480 @ 60Hz */ 21 { 25000, 0x0013, 0x0003, 0x40, 0x5F, 0x4F, 0x50, 0x82, 0x51, 0x9D, 22 0x0B, 0x10, 0x40, 0xE9, 0x0B, 0xDF, 0x50, 0xE7, 0x04, 0x02, 23 0x01, 0x01, 0x01, 0x00, 0x01, 0x22002000, 0x22004000, 0x22006000, 24 0x22002000, 0x22004000, 0x22006000, 0xC0 }, 25 26 /* 640x480 @ 70Hz */ 27 { 28000, 0x0053, 0x0010, 0x40, 0x61, 0x4F, 0x4F, 0x85, 0x52, 0x9A, 28 0xF2, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xF3, 0x01, 29 0x01, 0x01, 0x01, 0x00, 0x01, 0x22002000, 0x22004000, 0x22005000, 30 0x22002000, 0x22004000, 0x22005000, 0xC0 }, 31 32 /* 640x480 @ 72Hz */ 33 { 31000, 0x0013, 0x0002, 0x40, 0x63, 0x4F, 0x4F, 0x87, 0x52, 0x97, 34 0x06, 0x0F, 0x40, 0xE8, 0x0B, 0xDF, 0x50, 0xDF, 0x07, 0x02, 35 0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22007000, 36 0x22003000, 0x22005000, 0x22007000, 0xC0 }, 37 38 /* 640x480 @ 75Hz */ 39 { 31000, 0x0013, 0x0002, 0x40, 0x64, 0x4F, 0x4F, 0x88, 0x51, 0x99, 40 0xF2, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xF3, 0x01, 41 0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22007000, 42 0x22003000, 0x22005000, 0x22007000, 0xC0 }, 43 44 /* 640x480 @ 85Hz */ 45 { 36000, 0x0010, 0x0001, 0x40, 0x63, 0x4F, 0x4F, 0x87, 0x56, 0x9D, 46 0xFB, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xFC, 0x01, 47 0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22107000, 48 0x22003000, 0x22005000, 0x22107000, 0xC0 }, 49 50 /* 800x600 @ 56Hz */ 51 { 36000, 0x0010, 0x0001, 0x40, 0x7B, 0x63, 0x63, 0x9F, 0x66, 0x8F, 52 0x6F, 0x10, 0x40, 0x58, 0x0A, 0x57, 0xC8, 0x57, 0x70, 0x02, 53 0x02, 0x02, 0x02, 0x00, 0x01, 0x22003000, 0x22005000, 0x22107000, 54 0x22003000, 0x22005000, 0x22107000, 0x00 }, 55 56 /* 800x600 @ 60Hz */ 57 { 40000, 0x0008, 0x0001, 0x30, 0x7F, 0x63, 0x63, 0x83, 0x68, 0x18, 58 0x72, 0x10, 0x40, 0x58, 0x0C, 0x57, 0xC8, 0x57, 0x73, 0x02, 59 0x02, 0x02, 0x02, 0x00, 0x00, 0x22003000, 0x22006000, 0x22108000, 60 0x22003000, 0x22006000, 0x22108000, 0x00 }, 61 62 /* 800x600 @ 70Hz */ 63 { 45000, 0x0054, 0x0015, 0x30, 0x7D, 0x63, 0x63, 0x81, 0x68, 0x12, 64 0x6f, 0x10, 0x40, 0x58, 0x0b, 0x57, 0x64, 0x57, 0x70, 0x02, 65 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210A000, 66 0x22004000, 0x22007000, 0x2210A000, 0x00 }, 67 68 /* 800x600 @ 72Hz */ 69 { 50000, 0x0017, 0x0004, 0x30, 0x7D, 0x63, 0x63, 0x81, 0x6A, 0x19, 70 0x98, 0x10, 0x40, 0x7C, 0x02, 0x57, 0xC8, 0x57, 0x99, 0x02, 71 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210A000, 72 0x22004000, 0x22007000, 0x2210A000, 0x00 }, 73 74 /* 800x600 @ 75Hz */ 75 { 49000, 0x001F, 0x0006, 0x30, 0x7F, 0x63, 0x63, 0x83, 0x65, 0x0F, 76 0x6F, 0x10, 0x40, 0x58, 0x0B, 0x57, 0xC8, 0x57, 0x70, 0x02, 77 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210B000, 78 0x22004000, 0x22007000, 0x2210B000, 0x00 }, 79 80 /* 800x600 @ 85Hz */ 81 { 56000, 0x0049, 0x000E, 0x30, 0x7E, 0x63, 0x63, 0x82, 0x67, 0x0F, 82 0x75, 0x10, 0x40, 0x58, 0x0B, 0x57, 0xC8, 0x57, 0x76, 0x02, 83 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22108000, 0x2210b000, 84 0x22004000, 0x22108000, 0x2210b000, 0x00 }, 85 86 /* 1024x768 @ 60Hz */ 87 { 65000, 0x003F, 0x000A, 0x30, 0xA3, 0x7F, 0x7F, 0x87, 0x83, 0x94, 88 0x24, 0x10, 0x40, 0x02, 0x08, 0xFF, 0x80, 0xFF, 0x25, 0x03, 89 0x02, 0x03, 0x02, 0x00, 0x00, 0x22005000, 0x22109000, 0x2220D000, 90 0x22005000, 0x22109000, 0x2220D000, 0xC0 }, 91 92 /* 1024x768 @ 70Hz */ 93 { 75000, 0x0017, 0x0002, 0x30, 0xA1, 0x7F, 0x7F, 0x85, 0x82, 0x93, 94 0x24, 0x10, 0x40, 0x02, 0x08, 0xFF, 0x80, 0xFF, 0x25, 0x03, 95 0x02, 0x03, 0x02, 0x00, 0x00, 0x22005000, 0x2210A000, 0x2220F000, 96 0x22005000, 0x2210A000, 0x2220F000, 0xC0 }, 97 98 /* 1024x768 @ 75Hz */ 99 { 78000, 0x0050, 0x0017, 0x20, 0x9F, 0x7F, 0x7F, 0x83, 0x81, 0x8D, 100 0x1E, 0x10, 0x40, 0x00, 0x03, 0xFF, 0x80, 0xFF, 0x1F, 0x03, 101 0x02, 0x03, 0x02, 0x00, 0x00, 0x22006000, 0x2210B000, 0x22210000, 102 0x22006000, 0x2210B000, 0x22210000, 0x00 }, 103 104 /* 1024x768 @ 85Hz */ 105 { 94000, 0x003D, 0x000E, 0x20, 0xA7, 0x7F, 0x7F, 0x8B, 0x85, 0x91, 106 0x26, 0x10, 0x40, 0x00, 0x03, 0xFF, 0x80, 0xFF, 0x27, 0x03, 107 0x02, 0x03, 0x02, 0x00, 0x00, 0x22007000, 0x2220E000, 0x22212000, 108 0x22007000, 0x2220E000, 0x22212000, 0x00 }, 109 110 /* 1152x864 @ 60Hz */ 111 { 80000, 0x0008, 0x0001, 0x20, 0xB3, 0x8F, 0x8F, 0x97, 0x93, 0x9f, 112 0x87, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5f, 0x88, 0x03, 113 0x03, 0x03, 0x03, 0x00, 0x00, 0x2220C000, 0x22210000, 0x22415000, 114 0x2220C000, 0x22210000, 0x22415000, 0x00 }, 115 116 /* 1152x864 @ 70Hz */ 117 { 96000, 0x000a, 0x0001, 0x20, 0xbb, 0x8F, 0x8F, 0x9f, 0x98, 0x87, 118 0x82, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x83, 0x03, 119 0x03, 0x03, 0x03, 0x00, 0x00, 0x22107000, 0x22210000, 0x22415000, 120 0x22107000, 0x22210000, 0x22415000, 0x00 }, 121 122 /* 1152x864 @ 72Hz */ 123 { 99000, 0x001f, 0x0006, 0x20, 0xbb, 0x8F, 0x8F, 0x9f, 0x98, 0x87, 124 0x83, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x84, 0x03, 125 0x03, 0x03, 0x03, 0x00, 0x00, 0x22107000, 0x22210000, 0x22415000, 126 0x22107000, 0x22210000, 0x22415000, 0x00 }, 127 128 /* 1152x864 @ 75Hz */ 129 { 108000, 0x0010, 0x0002, 0x20, 0xC3, 0x8F, 0x8F, 0x87, 0x97, 0x07, 130 0x82, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x83, 0x03, 131 0x03, 0x03, 0x03, 0x00, 0x01, 0x22107000, 0x22210000, 0x22415000, 132 0x22107000, 0x22210000, 0x22415000, 0x00 }, 133 134 /* 1152x864 @ 85Hz */ 135 { 121000, 0x006D, 0x0014, 0x20, 0xc0, 0x8F, 0x8F, 0x84, 0x97, 0x07, 136 0x93, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x94, 0x03, 137 0x03, 0x03, 0x03, 0x00, 0x01, 0x2220C000, 0x22210000, 0x22415000, 138 0x2220C000, 0x22210000, 0x22415000, 0x0 }, 139 140 /* 1280x960 @ 60Hz */ 141 { 108000, 0x0010, 0x0002, 0x20, 0xDC, 0x9F, 0x9F, 0x80, 0xAB, 0x99, 142 0xE6, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xE7, 0x03, 143 0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22210000, 0x22415000, 144 0x2210A000, 0x22210000, 0x22415000, 0x00 }, 145 146 /* 1280x960 @ 75Hz */ 147 { 129000, 0x0029, 0x0006, 0x20, 0xD3, 0x9F, 0x9F, 0x97, 0xaa, 0x1b, 148 0xE8, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xE9, 0x03, 149 0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22210000, 0x2241B000, 150 0x2210A000, 0x22210000, 0x2241B000, 0x00 }, 151 152 /* 1280x960 @ 85Hz */ 153 { 148000, 0x0042, 0x0009, 0x20, 0xD3, 0x9F, 0x9F, 0x97, 0xA7, 0x1B, 154 0xF1, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xF2, 0x03, 155 0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22220000, 0x2241D000, 156 0x2210A000, 0x22220000, 0x2241D000, 0x00 }, 157 158 /* 1600x1200 @ 60Hz */ 159 { 162000, 0x0019, 0x0006, 0x10, 0x09, 0xC7, 0xC7, 0x8D, 0xcf, 0x07, 160 0xE0, 0x10, 0x40, 0xB0, 0x03, 0xAF, 0xC8, 0xAF, 0xE1, 0x04, 161 0x04, 0x04, 0x04, 0x01, 0x00, 0x2210b000, 0x22416000, 0x44419000, 162 0x2210b000, 0x22416000, 0x44419000, 0x00 }, 163 164 /* 1600x1200 @ 65 Hz */ 165 { 175000, 0x005d, 0x0018, 0x10, 0x09, 0xC7, 0xC7, 0x8D, 0xcf, 0x07, 166 0xE0, 0x10, 0x40, 0xB0, 0x03, 0xAF, 0xC8, 0xAF, 0xE1, 0x04, 167 0x04, 0x04, 0x04, 0x01, 0x00, 0x2210c000, 0x22416000, 0x44419000, 168 0x2210c000, 0x22416000, 0x44419000, 0x00 }, 169 170 /* 1600x1200 @ 70 Hz */ 171 { 189000, 0x003D, 0x000e, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07, 172 0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04, 173 0x04, 0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000, 174 0x2220e000, 0x22416000, 0x44419000, 0x00 }, 175 176 /* 1600x1200 @ 72 Hz */ 177 { 195000, 0x003f, 0x000e, 0x10, 0x0b, 0xC7, 0xC7, 0x8f, 0xd5, 0x0b, 178 0xE1, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xe2, 0x04, 0x04, 179 0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000, 180 0x2220e000, 0x22416000, 0x44419000, 0x00 }, 181 182 /* 1600x1200 @ 75 Hz */ 183 { 202000, 0x0024, 0x0007, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07, 184 0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04, 0x04, 185 0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000, 186 0x2220e000, 0x22416000, 0x44419000, 0x00 }, 187 188 /* 1600x1200 @ 85 Hz */ 189 { 229000, 0x0029, 0x0007, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07, 190 0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04, 0x04, 191 0x04, 0x04, 0x01, 0x00, 0x22210000, 0x22416000, 0x0, 192 0x22210000, 0x22416000, 0x0, 0x00 }, 193 }; 194 195 void round_off_xres(u32 *xres) 196 { 197 if (*xres <= 640) 198 *xres = 640; 199 else if (*xres <= 800) 200 *xres = 800; 201 else if (*xres <= 1024) 202 *xres = 1024; 203 else if (*xres <= 1152) 204 *xres = 1152; 205 else if (*xres <= 1280) 206 *xres = 1280; 207 else 208 *xres = 1600; 209 } 210 211 inline void round_off_yres(u32 *xres, u32 *yres) 212 { 213 *yres = (*xres * 3) >> 2; 214 } 215 216 static int i810fb_find_best_mode(u32 xres, u32 yres, u32 pixclock) 217 { 218 u32 diff = 0, diff_best = 0xFFFFFFFF, i = 0, i_best = 0; 219 u8 hfl = (u8) ((xres >> 3) - 1); 220 221 for (i = 0; i < ARRAY_SIZE(std_modes); i++) { 222 if (std_modes[i].cr01 == hfl) { 223 if (std_modes[i].pixclock <= pixclock) 224 diff = pixclock - std_modes[i].pixclock; 225 if (diff < diff_best) { 226 i_best = i; 227 diff_best = diff; 228 } 229 } 230 } 231 return i_best; 232 } 233 234 void i810fb_encode_registers(const struct fb_var_screeninfo *var, 235 struct i810fb_par *par, u32 xres, u32 yres) 236 { 237 u32 i_best = i810fb_find_best_mode(xres, yres, par->regs.pixclock); 238 239 par->regs = std_modes[i_best]; 240 241 /* overlay */ 242 par->ovract = ((xres + var->right_margin + var->hsync_len + 243 var->left_margin - 32) | ((xres - 32) << 16)); 244 } 245 246 void i810fb_fill_var_timings(struct fb_var_screeninfo *var) 247 { 248 u32 total, xres, yres; 249 u32 mode, pixclock; 250 251 xres = var->xres; 252 yres = var->yres; 253 254 pixclock = 1000000000 / var->pixclock; 255 mode = i810fb_find_best_mode(xres, yres, pixclock); 256 257 total = (std_modes[mode].cr00 | (std_modes[mode].cr35 & 1) << 8) + 3; 258 total <<= 3; 259 260 var->pixclock = 1000000000 / std_modes[mode].pixclock; 261 var->right_margin = (std_modes[mode].cr04 << 3) - xres; 262 var->hsync_len = ((std_modes[mode].cr05 & 0x1F) - 263 (std_modes[mode].cr04 & 0x1F)) << 3; 264 var->left_margin = (total - (xres + var->right_margin + 265 var->hsync_len)); 266 var->sync = FB_SYNC_ON_GREEN; 267 if (~(std_modes[mode].msr & (1 << 6))) 268 var->sync |= FB_SYNC_HOR_HIGH_ACT; 269 if (~(std_modes[mode].msr & (1 << 7))) 270 var->sync |= FB_SYNC_VERT_HIGH_ACT; 271 272 total = (std_modes[mode].cr06 | (std_modes[mode].cr30 & 0xF) << 8) + 2; 273 var->lower_margin = (std_modes[mode].cr10 | 274 (std_modes[mode].cr32 & 0x0F) << 8) - yres; 275 var->vsync_len = (std_modes[mode].cr11 & 0x0F) - 276 (var->lower_margin & 0x0F); 277 var->upper_margin = total - (yres + var->lower_margin + var->vsync_len); 278 } 279 280 u32 i810_get_watermark(const struct fb_var_screeninfo *var, 281 struct i810fb_par *par) 282 { 283 struct mode_registers *params = &par->regs; 284 u32 wmark = 0; 285 286 if (par->mem_freq == 100) { 287 switch (var->bits_per_pixel) { 288 case 8: 289 wmark = params->bpp8_100; 290 break; 291 case 16: 292 wmark = params->bpp16_100; 293 break; 294 case 24: 295 case 32: 296 wmark = params->bpp24_100; 297 } 298 } else { 299 switch (var->bits_per_pixel) { 300 case 8: 301 wmark = params->bpp8_133; 302 break; 303 case 16: 304 wmark = params->bpp16_133; 305 break; 306 case 24: 307 case 32: 308 wmark = params->bpp24_133; 309 } 310 } 311 return wmark; 312 } 313 314