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