Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/video/tgafb.c -- DEC 21030 TGA frame buffer device |
| 3 | * |
| 4 | * Copyright (C) 1995 Jay Estabrook |
| 5 | * Copyright (C) 1997 Geert Uytterhoeven |
| 6 | * Copyright (C) 1999,2000 Martin Lucina, Tom Zerucha |
| 7 | * Copyright (C) 2002 Richard Henderson |
| 8 | * |
| 9 | * This file is subject to the terms and conditions of the GNU General Public |
| 10 | * License. See the file COPYING in the main directory of this archive for |
| 11 | * more details. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/sched.h> |
| 17 | #include <linux/errno.h> |
| 18 | #include <linux/string.h> |
| 19 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include <linux/slab.h> |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/fb.h> |
| 24 | #include <linux/pci.h> |
| 25 | #include <linux/selection.h> |
Akinobu Mita | 1c66768 | 2006-12-08 02:36:26 -0800 | [diff] [blame] | 26 | #include <linux/bitrev.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <asm/io.h> |
| 28 | #include <video/tgafb.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | /* |
| 31 | * Local functions. |
| 32 | */ |
| 33 | |
| 34 | static int tgafb_check_var(struct fb_var_screeninfo *, struct fb_info *); |
| 35 | static int tgafb_set_par(struct fb_info *); |
| 36 | static void tgafb_set_pll(struct tga_par *, int); |
| 37 | static int tgafb_setcolreg(unsigned, unsigned, unsigned, unsigned, |
| 38 | unsigned, struct fb_info *); |
| 39 | static int tgafb_blank(int, struct fb_info *); |
| 40 | static void tgafb_init_fix(struct fb_info *); |
| 41 | |
| 42 | static void tgafb_imageblit(struct fb_info *, const struct fb_image *); |
| 43 | static void tgafb_fillrect(struct fb_info *, const struct fb_fillrect *); |
| 44 | static void tgafb_copyarea(struct fb_info *, const struct fb_copyarea *); |
| 45 | |
Maciej W. Rozycki | 1b2f2fe | 2007-02-12 00:54:56 -0800 | [diff] [blame^] | 46 | static int __devinit tgafb_pci_register(struct pci_dev *, |
| 47 | const struct pci_device_id *); |
| 48 | static void __devexit tgafb_pci_unregister(struct pci_dev *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | static const char *mode_option = "640x480@60"; |
| 51 | |
| 52 | |
| 53 | /* |
| 54 | * Frame buffer operations |
| 55 | */ |
| 56 | |
| 57 | static struct fb_ops tgafb_ops = { |
| 58 | .owner = THIS_MODULE, |
| 59 | .fb_check_var = tgafb_check_var, |
| 60 | .fb_set_par = tgafb_set_par, |
| 61 | .fb_setcolreg = tgafb_setcolreg, |
| 62 | .fb_blank = tgafb_blank, |
| 63 | .fb_fillrect = tgafb_fillrect, |
| 64 | .fb_copyarea = tgafb_copyarea, |
| 65 | .fb_imageblit = tgafb_imageblit, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | }; |
| 67 | |
| 68 | |
| 69 | /* |
| 70 | * PCI registration operations |
| 71 | */ |
| 72 | |
| 73 | static struct pci_device_id const tgafb_pci_table[] = { |
| 74 | { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TGA, PCI_ANY_ID, PCI_ANY_ID, |
| 75 | 0, 0, 0 } |
| 76 | }; |
| 77 | |
| 78 | static struct pci_driver tgafb_driver = { |
| 79 | .name = "tgafb", |
| 80 | .id_table = tgafb_pci_table, |
| 81 | .probe = tgafb_pci_register, |
| 82 | .remove = __devexit_p(tgafb_pci_unregister), |
| 83 | }; |
| 84 | |
| 85 | |
| 86 | /** |
| 87 | * tgafb_check_var - Optional function. Validates a var passed in. |
| 88 | * @var: frame buffer variable screen structure |
| 89 | * @info: frame buffer structure that represents a single frame buffer |
| 90 | */ |
| 91 | static int |
| 92 | tgafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
| 93 | { |
| 94 | struct tga_par *par = (struct tga_par *)info->par; |
| 95 | |
| 96 | if (par->tga_type == TGA_TYPE_8PLANE) { |
| 97 | if (var->bits_per_pixel != 8) |
| 98 | return -EINVAL; |
| 99 | } else { |
| 100 | if (var->bits_per_pixel != 32) |
| 101 | return -EINVAL; |
| 102 | } |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 103 | var->red.length = var->green.length = var->blue.length = 8; |
| 104 | if (var->bits_per_pixel == 32) { |
| 105 | var->red.offset = 16; |
| 106 | var->green.offset = 8; |
| 107 | var->blue.offset = 0; |
| 108 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
| 110 | if (var->xres_virtual != var->xres || var->yres_virtual != var->yres) |
| 111 | return -EINVAL; |
| 112 | if (var->nonstd) |
| 113 | return -EINVAL; |
| 114 | if (1000000000 / var->pixclock > TGA_PLL_MAX_FREQ) |
| 115 | return -EINVAL; |
| 116 | if ((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) |
| 117 | return -EINVAL; |
| 118 | |
| 119 | /* Some of the acceleration routines assume the line width is |
| 120 | a multiple of 64 bytes. */ |
| 121 | if (var->xres * (par->tga_type == TGA_TYPE_8PLANE ? 1 : 4) % 64) |
| 122 | return -EINVAL; |
| 123 | |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * tgafb_set_par - Optional function. Alters the hardware state. |
| 129 | * @info: frame buffer structure that represents a single frame buffer |
| 130 | */ |
| 131 | static int |
| 132 | tgafb_set_par(struct fb_info *info) |
| 133 | { |
| 134 | static unsigned int const deep_presets[4] = { |
| 135 | 0x00014000, |
| 136 | 0x0001440d, |
| 137 | 0xffffffff, |
| 138 | 0x0001441d |
| 139 | }; |
| 140 | static unsigned int const rasterop_presets[4] = { |
| 141 | 0x00000003, |
| 142 | 0x00000303, |
| 143 | 0xffffffff, |
| 144 | 0x00000303 |
| 145 | }; |
| 146 | static unsigned int const mode_presets[4] = { |
Maciej W. Rozycki | c7488ce | 2007-02-12 00:54:55 -0800 | [diff] [blame] | 147 | 0x00000000, |
| 148 | 0x00000300, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | 0xffffffff, |
Maciej W. Rozycki | c7488ce | 2007-02-12 00:54:55 -0800 | [diff] [blame] | 150 | 0x00000300 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | }; |
| 152 | static unsigned int const base_addr_presets[4] = { |
| 153 | 0x00000000, |
| 154 | 0x00000001, |
| 155 | 0xffffffff, |
| 156 | 0x00000001 |
| 157 | }; |
| 158 | |
| 159 | struct tga_par *par = (struct tga_par *) info->par; |
| 160 | u32 htimings, vtimings, pll_freq; |
| 161 | u8 tga_type; |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 162 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
| 164 | /* Encode video timings. */ |
| 165 | htimings = (((info->var.xres/4) & TGA_HORIZ_ACT_LSB) |
| 166 | | (((info->var.xres/4) & 0x600 << 19) & TGA_HORIZ_ACT_MSB)); |
| 167 | vtimings = (info->var.yres & TGA_VERT_ACTIVE); |
| 168 | htimings |= ((info->var.right_margin/4) << 9) & TGA_HORIZ_FP; |
| 169 | vtimings |= (info->var.lower_margin << 11) & TGA_VERT_FP; |
| 170 | htimings |= ((info->var.hsync_len/4) << 14) & TGA_HORIZ_SYNC; |
| 171 | vtimings |= (info->var.vsync_len << 16) & TGA_VERT_SYNC; |
| 172 | htimings |= ((info->var.left_margin/4) << 21) & TGA_HORIZ_BP; |
| 173 | vtimings |= (info->var.upper_margin << 22) & TGA_VERT_BP; |
| 174 | |
| 175 | if (info->var.sync & FB_SYNC_HOR_HIGH_ACT) |
| 176 | htimings |= TGA_HORIZ_POLARITY; |
| 177 | if (info->var.sync & FB_SYNC_VERT_HIGH_ACT) |
| 178 | vtimings |= TGA_VERT_POLARITY; |
| 179 | |
| 180 | par->htimings = htimings; |
| 181 | par->vtimings = vtimings; |
| 182 | |
| 183 | par->sync_on_green = !!(info->var.sync & FB_SYNC_ON_GREEN); |
| 184 | |
| 185 | /* Store other useful values in par. */ |
| 186 | par->xres = info->var.xres; |
| 187 | par->yres = info->var.yres; |
| 188 | par->pll_freq = pll_freq = 1000000000 / info->var.pixclock; |
| 189 | par->bits_per_pixel = info->var.bits_per_pixel; |
| 190 | |
| 191 | tga_type = par->tga_type; |
| 192 | |
| 193 | /* First, disable video. */ |
| 194 | TGA_WRITE_REG(par, TGA_VALID_VIDEO | TGA_VALID_BLANK, TGA_VALID_REG); |
| 195 | |
| 196 | /* Write the DEEP register. */ |
| 197 | while (TGA_READ_REG(par, TGA_CMD_STAT_REG) & 1) /* wait for not busy */ |
| 198 | continue; |
| 199 | mb(); |
| 200 | TGA_WRITE_REG(par, deep_presets[tga_type], TGA_DEEP_REG); |
| 201 | while (TGA_READ_REG(par, TGA_CMD_STAT_REG) & 1) /* wait for not busy */ |
| 202 | continue; |
| 203 | mb(); |
| 204 | |
| 205 | /* Write some more registers. */ |
| 206 | TGA_WRITE_REG(par, rasterop_presets[tga_type], TGA_RASTEROP_REG); |
| 207 | TGA_WRITE_REG(par, mode_presets[tga_type], TGA_MODE_REG); |
| 208 | TGA_WRITE_REG(par, base_addr_presets[tga_type], TGA_BASE_ADDR_REG); |
| 209 | |
| 210 | /* Calculate & write the PLL. */ |
| 211 | tgafb_set_pll(par, pll_freq); |
| 212 | |
| 213 | /* Write some more registers. */ |
| 214 | TGA_WRITE_REG(par, 0xffffffff, TGA_PLANEMASK_REG); |
| 215 | TGA_WRITE_REG(par, 0xffffffff, TGA_PIXELMASK_REG); |
| 216 | |
| 217 | /* Init video timing regs. */ |
| 218 | TGA_WRITE_REG(par, htimings, TGA_HORIZ_REG); |
| 219 | TGA_WRITE_REG(par, vtimings, TGA_VERT_REG); |
| 220 | |
| 221 | /* Initalise RAMDAC. */ |
| 222 | if (tga_type == TGA_TYPE_8PLANE) { |
| 223 | |
| 224 | /* Init BT485 RAMDAC registers. */ |
| 225 | BT485_WRITE(par, 0xa2 | (par->sync_on_green ? 0x8 : 0x0), |
| 226 | BT485_CMD_0); |
| 227 | BT485_WRITE(par, 0x01, BT485_ADDR_PAL_WRITE); |
| 228 | BT485_WRITE(par, 0x14, BT485_CMD_3); /* cursor 64x64 */ |
| 229 | BT485_WRITE(par, 0x40, BT485_CMD_1); |
| 230 | BT485_WRITE(par, 0x20, BT485_CMD_2); /* cursor off, for now */ |
| 231 | BT485_WRITE(par, 0xff, BT485_PIXEL_MASK); |
| 232 | |
| 233 | /* Fill palette registers. */ |
| 234 | BT485_WRITE(par, 0x00, BT485_ADDR_PAL_WRITE); |
| 235 | TGA_WRITE_REG(par, BT485_DATA_PAL, TGA_RAMDAC_SETUP_REG); |
| 236 | |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 237 | #ifdef CONFIG_HW_CONSOLE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | for (i = 0; i < 16; i++) { |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 239 | int j = color_table[i]; |
| 240 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | TGA_WRITE_REG(par, default_red[j]|(BT485_DATA_PAL<<8), |
| 242 | TGA_RAMDAC_REG); |
| 243 | TGA_WRITE_REG(par, default_grn[j]|(BT485_DATA_PAL<<8), |
| 244 | TGA_RAMDAC_REG); |
| 245 | TGA_WRITE_REG(par, default_blu[j]|(BT485_DATA_PAL<<8), |
| 246 | TGA_RAMDAC_REG); |
| 247 | } |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 248 | for (i = 0; i < 240 * 3; i += 4) { |
| 249 | #else |
| 250 | for (i = 0; i < 256 * 3; i += 4) { |
| 251 | #endif |
| 252 | TGA_WRITE_REG(par, 0x55 | (BT485_DATA_PAL << 8), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | TGA_RAMDAC_REG); |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 254 | TGA_WRITE_REG(par, 0x00 | (BT485_DATA_PAL << 8), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | TGA_RAMDAC_REG); |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 256 | TGA_WRITE_REG(par, 0x00 | (BT485_DATA_PAL << 8), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | TGA_RAMDAC_REG); |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 258 | TGA_WRITE_REG(par, 0x00 | (BT485_DATA_PAL << 8), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | TGA_RAMDAC_REG); |
| 260 | } |
| 261 | |
| 262 | } else { /* 24-plane or 24plusZ */ |
| 263 | |
| 264 | /* Init BT463 registers. */ |
| 265 | BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_0, 0x40); |
| 266 | BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_1, 0x08); |
| 267 | BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_2, |
| 268 | (par->sync_on_green ? 0x80 : 0x40)); |
| 269 | |
| 270 | BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_0, 0xff); |
| 271 | BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_1, 0xff); |
| 272 | BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_2, 0xff); |
| 273 | BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_3, 0x0f); |
| 274 | |
| 275 | BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_0, 0x00); |
| 276 | BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_1, 0x00); |
| 277 | BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_2, 0x00); |
| 278 | BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_3, 0x00); |
| 279 | |
| 280 | /* Fill the palette. */ |
| 281 | BT463_LOAD_ADDR(par, 0x0000); |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 282 | TGA_WRITE_REG(par, BT463_PALETTE << 2, TGA_RAMDAC_SETUP_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 284 | #ifdef CONFIG_HW_CONSOLE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | for (i = 0; i < 16; i++) { |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 286 | int j = color_table[i]; |
| 287 | |
| 288 | TGA_WRITE_REG(par, default_red[j], TGA_RAMDAC_REG); |
| 289 | TGA_WRITE_REG(par, default_grn[j], TGA_RAMDAC_REG); |
| 290 | TGA_WRITE_REG(par, default_blu[j], TGA_RAMDAC_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | } |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 292 | for (i = 0; i < 512 * 3; i += 4) { |
| 293 | #else |
| 294 | for (i = 0; i < 528 * 3; i += 4) { |
| 295 | #endif |
| 296 | TGA_WRITE_REG(par, 0x55, TGA_RAMDAC_REG); |
| 297 | TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); |
| 298 | TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); |
| 299 | TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | } |
| 301 | |
| 302 | /* Fill window type table after start of vertical retrace. */ |
| 303 | while (!(TGA_READ_REG(par, TGA_INTR_STAT_REG) & 0x01)) |
| 304 | continue; |
| 305 | TGA_WRITE_REG(par, 0x01, TGA_INTR_STAT_REG); |
| 306 | mb(); |
| 307 | while (!(TGA_READ_REG(par, TGA_INTR_STAT_REG) & 0x01)) |
| 308 | continue; |
| 309 | TGA_WRITE_REG(par, 0x01, TGA_INTR_STAT_REG); |
| 310 | |
| 311 | BT463_LOAD_ADDR(par, BT463_WINDOW_TYPE_BASE); |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 312 | TGA_WRITE_REG(par, BT463_REG_ACC << 2, TGA_RAMDAC_SETUP_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | |
| 314 | for (i = 0; i < 16; i++) { |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 315 | TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); |
| 316 | TGA_WRITE_REG(par, 0x01, TGA_RAMDAC_REG); |
| 317 | TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | } |
| 319 | |
| 320 | } |
| 321 | |
| 322 | /* Finally, enable video scan (and pray for the monitor... :-) */ |
| 323 | TGA_WRITE_REG(par, TGA_VALID_VIDEO, TGA_VALID_REG); |
| 324 | |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | #define DIFFCHECK(X) \ |
| 329 | do { \ |
| 330 | if (m <= 0x3f) { \ |
| 331 | int delta = f - (TGA_PLL_BASE_FREQ * (X)) / (r << shift); \ |
| 332 | if (delta < 0) \ |
| 333 | delta = -delta; \ |
| 334 | if (delta < min_diff) \ |
| 335 | min_diff = delta, vm = m, va = a, vr = r; \ |
| 336 | } \ |
| 337 | } while (0) |
| 338 | |
| 339 | static void |
| 340 | tgafb_set_pll(struct tga_par *par, int f) |
| 341 | { |
| 342 | int n, shift, base, min_diff, target; |
| 343 | int r,a,m,vm = 34, va = 1, vr = 30; |
| 344 | |
| 345 | for (r = 0 ; r < 12 ; r++) |
| 346 | TGA_WRITE_REG(par, !r, TGA_CLOCK_REG); |
| 347 | |
| 348 | if (f > TGA_PLL_MAX_FREQ) |
| 349 | f = TGA_PLL_MAX_FREQ; |
| 350 | |
| 351 | if (f >= TGA_PLL_MAX_FREQ / 2) |
| 352 | shift = 0; |
| 353 | else if (f >= TGA_PLL_MAX_FREQ / 4) |
| 354 | shift = 1; |
| 355 | else |
| 356 | shift = 2; |
| 357 | |
| 358 | TGA_WRITE_REG(par, shift & 1, TGA_CLOCK_REG); |
| 359 | TGA_WRITE_REG(par, shift >> 1, TGA_CLOCK_REG); |
| 360 | |
| 361 | for (r = 0 ; r < 10 ; r++) |
| 362 | TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); |
| 363 | |
| 364 | if (f <= 120000) { |
| 365 | TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); |
| 366 | TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); |
| 367 | } |
| 368 | else if (f <= 200000) { |
| 369 | TGA_WRITE_REG(par, 1, TGA_CLOCK_REG); |
| 370 | TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); |
| 371 | } |
| 372 | else { |
| 373 | TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); |
| 374 | TGA_WRITE_REG(par, 1, TGA_CLOCK_REG); |
| 375 | } |
| 376 | |
| 377 | TGA_WRITE_REG(par, 1, TGA_CLOCK_REG); |
| 378 | TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); |
| 379 | TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); |
| 380 | TGA_WRITE_REG(par, 1, TGA_CLOCK_REG); |
| 381 | TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); |
| 382 | TGA_WRITE_REG(par, 1, TGA_CLOCK_REG); |
| 383 | |
| 384 | target = (f << shift) / TGA_PLL_BASE_FREQ; |
| 385 | min_diff = TGA_PLL_MAX_FREQ; |
| 386 | |
| 387 | r = 7 / target; |
| 388 | if (!r) r = 1; |
| 389 | |
| 390 | base = target * r; |
| 391 | while (base < 449) { |
| 392 | for (n = base < 7 ? 7 : base; n < base + target && n < 449; n++) { |
| 393 | m = ((n + 3) / 7) - 1; |
| 394 | a = 0; |
| 395 | DIFFCHECK((m + 1) * 7); |
| 396 | m++; |
| 397 | DIFFCHECK((m + 1) * 7); |
| 398 | m = (n / 6) - 1; |
| 399 | if ((a = n % 6)) |
| 400 | DIFFCHECK(n); |
| 401 | } |
| 402 | r++; |
| 403 | base += target; |
| 404 | } |
| 405 | |
| 406 | vr--; |
| 407 | |
| 408 | for (r = 0; r < 8; r++) |
| 409 | TGA_WRITE_REG(par, (vm >> r) & 1, TGA_CLOCK_REG); |
| 410 | for (r = 0; r < 8 ; r++) |
| 411 | TGA_WRITE_REG(par, (va >> r) & 1, TGA_CLOCK_REG); |
| 412 | for (r = 0; r < 7 ; r++) |
| 413 | TGA_WRITE_REG(par, (vr >> r) & 1, TGA_CLOCK_REG); |
| 414 | TGA_WRITE_REG(par, ((vr >> 7) & 1)|2, TGA_CLOCK_REG); |
| 415 | } |
| 416 | |
| 417 | |
| 418 | /** |
| 419 | * tgafb_setcolreg - Optional function. Sets a color register. |
| 420 | * @regno: boolean, 0 copy local, 1 get_user() function |
| 421 | * @red: frame buffer colormap structure |
| 422 | * @green: The green value which can be up to 16 bits wide |
| 423 | * @blue: The blue value which can be up to 16 bits wide. |
| 424 | * @transp: If supported the alpha value which can be up to 16 bits wide. |
| 425 | * @info: frame buffer info structure |
| 426 | */ |
| 427 | static int |
| 428 | tgafb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, |
| 429 | unsigned transp, struct fb_info *info) |
| 430 | { |
| 431 | struct tga_par *par = (struct tga_par *) info->par; |
| 432 | |
| 433 | if (regno > 255) |
| 434 | return 1; |
| 435 | red >>= 8; |
| 436 | green >>= 8; |
| 437 | blue >>= 8; |
| 438 | |
| 439 | if (par->tga_type == TGA_TYPE_8PLANE) { |
| 440 | BT485_WRITE(par, regno, BT485_ADDR_PAL_WRITE); |
| 441 | TGA_WRITE_REG(par, BT485_DATA_PAL, TGA_RAMDAC_SETUP_REG); |
| 442 | TGA_WRITE_REG(par, red|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG); |
| 443 | TGA_WRITE_REG(par, green|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG); |
| 444 | TGA_WRITE_REG(par, blue|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG); |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 445 | } else { |
| 446 | if (regno < 16) { |
| 447 | u32 value = (regno << 16) | (regno << 8) | regno; |
| 448 | ((u32 *)info->pseudo_palette)[regno] = value; |
| 449 | } |
| 450 | BT463_LOAD_ADDR(par, regno); |
| 451 | TGA_WRITE_REG(par, BT463_PALETTE << 2, TGA_RAMDAC_SETUP_REG); |
| 452 | TGA_WRITE_REG(par, red, TGA_RAMDAC_REG); |
| 453 | TGA_WRITE_REG(par, green, TGA_RAMDAC_REG); |
| 454 | TGA_WRITE_REG(par, blue, TGA_RAMDAC_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | } |
| 456 | |
| 457 | return 0; |
| 458 | } |
| 459 | |
| 460 | |
| 461 | /** |
| 462 | * tgafb_blank - Optional function. Blanks the display. |
| 463 | * @blank_mode: the blank mode we want. |
| 464 | * @info: frame buffer structure that represents a single frame buffer |
| 465 | */ |
| 466 | static int |
| 467 | tgafb_blank(int blank, struct fb_info *info) |
| 468 | { |
| 469 | struct tga_par *par = (struct tga_par *) info->par; |
| 470 | u32 vhcr, vvcr, vvvr; |
| 471 | unsigned long flags; |
| 472 | |
| 473 | local_irq_save(flags); |
| 474 | |
| 475 | vhcr = TGA_READ_REG(par, TGA_HORIZ_REG); |
| 476 | vvcr = TGA_READ_REG(par, TGA_VERT_REG); |
| 477 | vvvr = TGA_READ_REG(par, TGA_VALID_REG); |
| 478 | vvvr &= ~(TGA_VALID_VIDEO | TGA_VALID_BLANK); |
| 479 | |
| 480 | switch (blank) { |
| 481 | case FB_BLANK_UNBLANK: /* Unblanking */ |
| 482 | if (par->vesa_blanked) { |
| 483 | TGA_WRITE_REG(par, vhcr & 0xbfffffff, TGA_HORIZ_REG); |
| 484 | TGA_WRITE_REG(par, vvcr & 0xbfffffff, TGA_VERT_REG); |
| 485 | par->vesa_blanked = 0; |
| 486 | } |
| 487 | TGA_WRITE_REG(par, vvvr | TGA_VALID_VIDEO, TGA_VALID_REG); |
| 488 | break; |
| 489 | |
| 490 | case FB_BLANK_NORMAL: /* Normal blanking */ |
| 491 | TGA_WRITE_REG(par, vvvr | TGA_VALID_VIDEO | TGA_VALID_BLANK, |
| 492 | TGA_VALID_REG); |
| 493 | break; |
| 494 | |
| 495 | case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */ |
| 496 | TGA_WRITE_REG(par, vvcr | 0x40000000, TGA_VERT_REG); |
| 497 | TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG); |
| 498 | par->vesa_blanked = 1; |
| 499 | break; |
| 500 | |
| 501 | case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */ |
| 502 | TGA_WRITE_REG(par, vhcr | 0x40000000, TGA_HORIZ_REG); |
| 503 | TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG); |
| 504 | par->vesa_blanked = 1; |
| 505 | break; |
| 506 | |
| 507 | case FB_BLANK_POWERDOWN: /* Poweroff */ |
| 508 | TGA_WRITE_REG(par, vhcr | 0x40000000, TGA_HORIZ_REG); |
| 509 | TGA_WRITE_REG(par, vvcr | 0x40000000, TGA_VERT_REG); |
| 510 | TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG); |
| 511 | par->vesa_blanked = 1; |
| 512 | break; |
| 513 | } |
| 514 | |
| 515 | local_irq_restore(flags); |
| 516 | return 0; |
| 517 | } |
| 518 | |
| 519 | |
| 520 | /* |
| 521 | * Acceleration. |
| 522 | */ |
| 523 | |
| 524 | /** |
| 525 | * tgafb_imageblit - REQUIRED function. Can use generic routines if |
| 526 | * non acclerated hardware and packed pixel based. |
| 527 | * Copies a image from system memory to the screen. |
| 528 | * |
| 529 | * @info: frame buffer structure that represents a single frame buffer |
| 530 | * @image: structure defining the image. |
| 531 | */ |
| 532 | static void |
| 533 | tgafb_imageblit(struct fb_info *info, const struct fb_image *image) |
| 534 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | struct tga_par *par = (struct tga_par *) info->par; |
| 536 | u32 fgcolor, bgcolor, dx, dy, width, height, vxres, vyres, pixelmask; |
| 537 | unsigned long rincr, line_length, shift, pos, is8bpp; |
| 538 | unsigned long i, j; |
| 539 | const unsigned char *data; |
| 540 | void __iomem *regs_base; |
| 541 | void __iomem *fb_base; |
| 542 | |
| 543 | dx = image->dx; |
| 544 | dy = image->dy; |
| 545 | width = image->width; |
| 546 | height = image->height; |
| 547 | vxres = info->var.xres_virtual; |
| 548 | vyres = info->var.yres_virtual; |
| 549 | line_length = info->fix.line_length; |
| 550 | rincr = (width + 7) / 8; |
| 551 | |
| 552 | /* Crop the image to the screen. */ |
| 553 | if (dx > vxres || dy > vyres) |
| 554 | return; |
| 555 | if (dx + width > vxres) |
| 556 | width = vxres - dx; |
| 557 | if (dy + height > vyres) |
| 558 | height = vyres - dy; |
| 559 | |
| 560 | /* For copies that aren't pixel expansion, there's little we |
| 561 | can do better than the generic code. */ |
| 562 | /* ??? There is a DMA write mode; I wonder if that could be |
| 563 | made to pull the data from the image buffer... */ |
| 564 | if (image->depth > 1) { |
| 565 | cfb_imageblit(info, image); |
| 566 | return; |
| 567 | } |
| 568 | |
| 569 | regs_base = par->tga_regs_base; |
| 570 | fb_base = par->tga_fb_base; |
| 571 | is8bpp = info->var.bits_per_pixel == 8; |
| 572 | |
| 573 | /* Expand the color values to fill 32-bits. */ |
| 574 | /* ??? Would be nice to notice colour changes elsewhere, so |
| 575 | that we can do this only when necessary. */ |
| 576 | fgcolor = image->fg_color; |
| 577 | bgcolor = image->bg_color; |
| 578 | if (is8bpp) { |
| 579 | fgcolor |= fgcolor << 8; |
| 580 | fgcolor |= fgcolor << 16; |
| 581 | bgcolor |= bgcolor << 8; |
| 582 | bgcolor |= bgcolor << 16; |
| 583 | } else { |
| 584 | if (fgcolor < 16) |
| 585 | fgcolor = ((u32 *)info->pseudo_palette)[fgcolor]; |
| 586 | if (bgcolor < 16) |
| 587 | bgcolor = ((u32 *)info->pseudo_palette)[bgcolor]; |
| 588 | } |
| 589 | __raw_writel(fgcolor, regs_base + TGA_FOREGROUND_REG); |
| 590 | __raw_writel(bgcolor, regs_base + TGA_BACKGROUND_REG); |
| 591 | |
| 592 | /* Acquire proper alignment; set up the PIXELMASK register |
| 593 | so that we only write the proper character cell. */ |
| 594 | pos = dy * line_length; |
| 595 | if (is8bpp) { |
| 596 | pos += dx; |
| 597 | shift = pos & 3; |
| 598 | pos &= -4; |
| 599 | } else { |
| 600 | pos += dx * 4; |
| 601 | shift = (pos & 7) >> 2; |
| 602 | pos &= -8; |
| 603 | } |
| 604 | |
| 605 | data = (const unsigned char *) image->data; |
| 606 | |
| 607 | /* Enable opaque stipple mode. */ |
| 608 | __raw_writel((is8bpp |
| 609 | ? TGA_MODE_SBM_8BPP | TGA_MODE_OPAQUE_STIPPLE |
| 610 | : TGA_MODE_SBM_24BPP | TGA_MODE_OPAQUE_STIPPLE), |
| 611 | regs_base + TGA_MODE_REG); |
| 612 | |
| 613 | if (width + shift <= 32) { |
| 614 | unsigned long bwidth; |
| 615 | |
| 616 | /* Handle common case of imaging a single character, in |
| 617 | a font less than 32 pixels wide. */ |
| 618 | |
| 619 | pixelmask = (1 << width) - 1; |
| 620 | pixelmask <<= shift; |
| 621 | __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG); |
| 622 | wmb(); |
| 623 | |
| 624 | bwidth = (width + 7) / 8; |
| 625 | |
| 626 | for (i = 0; i < height; ++i) { |
| 627 | u32 mask = 0; |
| 628 | |
| 629 | /* The image data is bit big endian; we need |
| 630 | little endian. */ |
| 631 | for (j = 0; j < bwidth; ++j) |
Akinobu Mita | 1c66768 | 2006-12-08 02:36:26 -0800 | [diff] [blame] | 632 | mask |= bitrev8(data[j]) << (j * 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | |
| 634 | __raw_writel(mask << shift, fb_base + pos); |
| 635 | |
| 636 | pos += line_length; |
| 637 | data += rincr; |
| 638 | } |
| 639 | wmb(); |
| 640 | __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG); |
| 641 | } else if (shift == 0) { |
| 642 | unsigned long pos0 = pos; |
| 643 | const unsigned char *data0 = data; |
| 644 | unsigned long bincr = (is8bpp ? 8 : 8*4); |
| 645 | unsigned long bwidth; |
| 646 | |
| 647 | /* Handle another common case in which accel_putcs |
| 648 | generates a large bitmap, which happens to be aligned. |
| 649 | Allow the tail to be misaligned. This case is |
| 650 | interesting because we've not got to hold partial |
| 651 | bytes across the words being written. */ |
| 652 | |
| 653 | wmb(); |
| 654 | |
| 655 | bwidth = (width / 8) & -4; |
| 656 | for (i = 0; i < height; ++i) { |
| 657 | for (j = 0; j < bwidth; j += 4) { |
| 658 | u32 mask = 0; |
Akinobu Mita | 1c66768 | 2006-12-08 02:36:26 -0800 | [diff] [blame] | 659 | mask |= bitrev8(data[j+0]) << (0 * 8); |
| 660 | mask |= bitrev8(data[j+1]) << (1 * 8); |
| 661 | mask |= bitrev8(data[j+2]) << (2 * 8); |
| 662 | mask |= bitrev8(data[j+3]) << (3 * 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | __raw_writel(mask, fb_base + pos + j*bincr); |
| 664 | } |
| 665 | pos += line_length; |
| 666 | data += rincr; |
| 667 | } |
| 668 | wmb(); |
| 669 | |
| 670 | pixelmask = (1ul << (width & 31)) - 1; |
| 671 | if (pixelmask) { |
| 672 | __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG); |
| 673 | wmb(); |
| 674 | |
| 675 | pos = pos0 + bwidth*bincr; |
| 676 | data = data0 + bwidth; |
| 677 | bwidth = ((width & 31) + 7) / 8; |
| 678 | |
| 679 | for (i = 0; i < height; ++i) { |
| 680 | u32 mask = 0; |
| 681 | for (j = 0; j < bwidth; ++j) |
Akinobu Mita | 1c66768 | 2006-12-08 02:36:26 -0800 | [diff] [blame] | 682 | mask |= bitrev8(data[j]) << (j * 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | __raw_writel(mask, fb_base + pos); |
| 684 | pos += line_length; |
| 685 | data += rincr; |
| 686 | } |
| 687 | wmb(); |
| 688 | __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG); |
| 689 | } |
| 690 | } else { |
| 691 | unsigned long pos0 = pos; |
| 692 | const unsigned char *data0 = data; |
| 693 | unsigned long bincr = (is8bpp ? 8 : 8*4); |
| 694 | unsigned long bwidth; |
| 695 | |
| 696 | /* Finally, handle the generic case of misaligned start. |
| 697 | Here we split the write into 16-bit spans. This allows |
| 698 | us to use only one pixel mask, instead of four as would |
| 699 | be required by writing 24-bit spans. */ |
| 700 | |
| 701 | pixelmask = 0xffff << shift; |
| 702 | __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG); |
| 703 | wmb(); |
| 704 | |
| 705 | bwidth = (width / 8) & -2; |
| 706 | for (i = 0; i < height; ++i) { |
| 707 | for (j = 0; j < bwidth; j += 2) { |
| 708 | u32 mask = 0; |
Akinobu Mita | 1c66768 | 2006-12-08 02:36:26 -0800 | [diff] [blame] | 709 | mask |= bitrev8(data[j+0]) << (0 * 8); |
| 710 | mask |= bitrev8(data[j+1]) << (1 * 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | mask <<= shift; |
| 712 | __raw_writel(mask, fb_base + pos + j*bincr); |
| 713 | } |
| 714 | pos += line_length; |
| 715 | data += rincr; |
| 716 | } |
| 717 | wmb(); |
| 718 | |
| 719 | pixelmask = ((1ul << (width & 15)) - 1) << shift; |
| 720 | if (pixelmask) { |
| 721 | __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG); |
| 722 | wmb(); |
| 723 | |
| 724 | pos = pos0 + bwidth*bincr; |
| 725 | data = data0 + bwidth; |
| 726 | bwidth = (width & 15) > 8; |
| 727 | |
| 728 | for (i = 0; i < height; ++i) { |
Akinobu Mita | 1c66768 | 2006-12-08 02:36:26 -0800 | [diff] [blame] | 729 | u32 mask = bitrev8(data[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | if (bwidth) |
Akinobu Mita | 1c66768 | 2006-12-08 02:36:26 -0800 | [diff] [blame] | 731 | mask |= bitrev8(data[1]) << 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | mask <<= shift; |
| 733 | __raw_writel(mask, fb_base + pos); |
| 734 | pos += line_length; |
| 735 | data += rincr; |
| 736 | } |
| 737 | wmb(); |
| 738 | } |
| 739 | __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG); |
| 740 | } |
| 741 | |
| 742 | /* Disable opaque stipple mode. */ |
| 743 | __raw_writel((is8bpp |
| 744 | ? TGA_MODE_SBM_8BPP | TGA_MODE_SIMPLE |
| 745 | : TGA_MODE_SBM_24BPP | TGA_MODE_SIMPLE), |
| 746 | regs_base + TGA_MODE_REG); |
| 747 | } |
| 748 | |
| 749 | /** |
| 750 | * tgafb_fillrect - REQUIRED function. Can use generic routines if |
| 751 | * non acclerated hardware and packed pixel based. |
| 752 | * Draws a rectangle on the screen. |
| 753 | * |
| 754 | * @info: frame buffer structure that represents a single frame buffer |
| 755 | * @rect: structure defining the rectagle and operation. |
| 756 | */ |
| 757 | static void |
| 758 | tgafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) |
| 759 | { |
| 760 | struct tga_par *par = (struct tga_par *) info->par; |
| 761 | int is8bpp = info->var.bits_per_pixel == 8; |
| 762 | u32 dx, dy, width, height, vxres, vyres, color; |
| 763 | unsigned long pos, align, line_length, i, j; |
| 764 | void __iomem *regs_base; |
| 765 | void __iomem *fb_base; |
| 766 | |
| 767 | dx = rect->dx; |
| 768 | dy = rect->dy; |
| 769 | width = rect->width; |
| 770 | height = rect->height; |
| 771 | vxres = info->var.xres_virtual; |
| 772 | vyres = info->var.yres_virtual; |
| 773 | line_length = info->fix.line_length; |
| 774 | regs_base = par->tga_regs_base; |
| 775 | fb_base = par->tga_fb_base; |
| 776 | |
| 777 | /* Crop the rectangle to the screen. */ |
| 778 | if (dx > vxres || dy > vyres || !width || !height) |
| 779 | return; |
| 780 | if (dx + width > vxres) |
| 781 | width = vxres - dx; |
| 782 | if (dy + height > vyres) |
| 783 | height = vyres - dy; |
| 784 | |
| 785 | pos = dy * line_length + dx * (is8bpp ? 1 : 4); |
| 786 | |
| 787 | /* ??? We could implement ROP_XOR with opaque fill mode |
| 788 | and a RasterOp setting of GXxor, but as far as I can |
| 789 | tell, this mode is not actually used in the kernel. |
| 790 | Thus I am ignoring it for now. */ |
| 791 | if (rect->rop != ROP_COPY) { |
| 792 | cfb_fillrect(info, rect); |
| 793 | return; |
| 794 | } |
| 795 | |
| 796 | /* Expand the color value to fill 8 pixels. */ |
| 797 | color = rect->color; |
| 798 | if (is8bpp) { |
| 799 | color |= color << 8; |
| 800 | color |= color << 16; |
| 801 | __raw_writel(color, regs_base + TGA_BLOCK_COLOR0_REG); |
| 802 | __raw_writel(color, regs_base + TGA_BLOCK_COLOR1_REG); |
| 803 | } else { |
| 804 | if (color < 16) |
| 805 | color = ((u32 *)info->pseudo_palette)[color]; |
| 806 | __raw_writel(color, regs_base + TGA_BLOCK_COLOR0_REG); |
| 807 | __raw_writel(color, regs_base + TGA_BLOCK_COLOR1_REG); |
| 808 | __raw_writel(color, regs_base + TGA_BLOCK_COLOR2_REG); |
| 809 | __raw_writel(color, regs_base + TGA_BLOCK_COLOR3_REG); |
| 810 | __raw_writel(color, regs_base + TGA_BLOCK_COLOR4_REG); |
| 811 | __raw_writel(color, regs_base + TGA_BLOCK_COLOR5_REG); |
| 812 | __raw_writel(color, regs_base + TGA_BLOCK_COLOR6_REG); |
| 813 | __raw_writel(color, regs_base + TGA_BLOCK_COLOR7_REG); |
| 814 | } |
| 815 | |
| 816 | /* The DATA register holds the fill mask for block fill mode. |
| 817 | Since we're not stippling, this is all ones. */ |
| 818 | __raw_writel(0xffffffff, regs_base + TGA_DATA_REG); |
| 819 | |
| 820 | /* Enable block fill mode. */ |
| 821 | __raw_writel((is8bpp |
| 822 | ? TGA_MODE_SBM_8BPP | TGA_MODE_BLOCK_FILL |
| 823 | : TGA_MODE_SBM_24BPP | TGA_MODE_BLOCK_FILL), |
| 824 | regs_base + TGA_MODE_REG); |
| 825 | wmb(); |
| 826 | |
| 827 | /* We can fill 2k pixels per operation. Notice blocks that fit |
| 828 | the width of the screen so that we can take advantage of this |
| 829 | and fill more than one line per write. */ |
| 830 | if (width == line_length) |
| 831 | width *= height, height = 1; |
| 832 | |
| 833 | /* The write into the frame buffer must be aligned to 4 bytes, |
| 834 | but we are allowed to encode the offset within the word in |
| 835 | the data word written. */ |
| 836 | align = (pos & 3) << 16; |
| 837 | pos &= -4; |
| 838 | |
| 839 | if (width <= 2048) { |
| 840 | u32 data; |
| 841 | |
| 842 | data = (width - 1) | align; |
| 843 | |
| 844 | for (i = 0; i < height; ++i) { |
| 845 | __raw_writel(data, fb_base + pos); |
| 846 | pos += line_length; |
| 847 | } |
| 848 | } else { |
| 849 | unsigned long Bpp = (is8bpp ? 1 : 4); |
| 850 | unsigned long nwidth = width & -2048; |
| 851 | u32 fdata, ldata; |
| 852 | |
| 853 | fdata = (2048 - 1) | align; |
| 854 | ldata = ((width & 2047) - 1) | align; |
| 855 | |
| 856 | for (i = 0; i < height; ++i) { |
| 857 | for (j = 0; j < nwidth; j += 2048) |
| 858 | __raw_writel(fdata, fb_base + pos + j*Bpp); |
| 859 | if (j < width) |
| 860 | __raw_writel(ldata, fb_base + pos + j*Bpp); |
| 861 | pos += line_length; |
| 862 | } |
| 863 | } |
| 864 | wmb(); |
| 865 | |
| 866 | /* Disable block fill mode. */ |
| 867 | __raw_writel((is8bpp |
| 868 | ? TGA_MODE_SBM_8BPP | TGA_MODE_SIMPLE |
| 869 | : TGA_MODE_SBM_24BPP | TGA_MODE_SIMPLE), |
| 870 | regs_base + TGA_MODE_REG); |
| 871 | } |
| 872 | |
| 873 | /** |
| 874 | * tgafb_copyarea - REQUIRED function. Can use generic routines if |
| 875 | * non acclerated hardware and packed pixel based. |
| 876 | * Copies on area of the screen to another area. |
| 877 | * |
| 878 | * @info: frame buffer structure that represents a single frame buffer |
| 879 | * @area: structure defining the source and destination. |
| 880 | */ |
| 881 | |
| 882 | /* Handle the special case of copying entire lines, e.g. during scrolling. |
| 883 | We can avoid a lot of needless computation in this case. In the 8bpp |
| 884 | case we need to use the COPY64 registers instead of mask writes into |
| 885 | the frame buffer to achieve maximum performance. */ |
| 886 | |
| 887 | static inline void |
| 888 | copyarea_line_8bpp(struct fb_info *info, u32 dy, u32 sy, |
| 889 | u32 height, u32 width) |
| 890 | { |
| 891 | struct tga_par *par = (struct tga_par *) info->par; |
| 892 | void __iomem *tga_regs = par->tga_regs_base; |
| 893 | unsigned long dpos, spos, i, n64; |
| 894 | |
| 895 | /* Set up the MODE and PIXELSHIFT registers. */ |
| 896 | __raw_writel(TGA_MODE_SBM_8BPP | TGA_MODE_COPY, tga_regs+TGA_MODE_REG); |
| 897 | __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG); |
| 898 | wmb(); |
| 899 | |
| 900 | n64 = (height * width) / 64; |
| 901 | |
Maciej W. Rozycki | 36f7140 | 2007-02-12 00:54:53 -0800 | [diff] [blame] | 902 | if (sy < dy) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | spos = (sy + height) * width; |
| 904 | dpos = (dy + height) * width; |
| 905 | |
| 906 | for (i = 0; i < n64; ++i) { |
| 907 | spos -= 64; |
| 908 | dpos -= 64; |
| 909 | __raw_writel(spos, tga_regs+TGA_COPY64_SRC); |
| 910 | wmb(); |
| 911 | __raw_writel(dpos, tga_regs+TGA_COPY64_DST); |
| 912 | wmb(); |
| 913 | } |
| 914 | } else { |
| 915 | spos = sy * width; |
| 916 | dpos = dy * width; |
| 917 | |
| 918 | for (i = 0; i < n64; ++i) { |
| 919 | __raw_writel(spos, tga_regs+TGA_COPY64_SRC); |
| 920 | wmb(); |
| 921 | __raw_writel(dpos, tga_regs+TGA_COPY64_DST); |
| 922 | wmb(); |
| 923 | spos += 64; |
| 924 | dpos += 64; |
| 925 | } |
| 926 | } |
| 927 | |
| 928 | /* Reset the MODE register to normal. */ |
| 929 | __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG); |
| 930 | } |
| 931 | |
| 932 | static inline void |
| 933 | copyarea_line_32bpp(struct fb_info *info, u32 dy, u32 sy, |
| 934 | u32 height, u32 width) |
| 935 | { |
| 936 | struct tga_par *par = (struct tga_par *) info->par; |
| 937 | void __iomem *tga_regs = par->tga_regs_base; |
| 938 | void __iomem *tga_fb = par->tga_fb_base; |
| 939 | void __iomem *src; |
| 940 | void __iomem *dst; |
| 941 | unsigned long i, n16; |
| 942 | |
| 943 | /* Set up the MODE and PIXELSHIFT registers. */ |
| 944 | __raw_writel(TGA_MODE_SBM_24BPP | TGA_MODE_COPY, tga_regs+TGA_MODE_REG); |
| 945 | __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG); |
| 946 | wmb(); |
| 947 | |
| 948 | n16 = (height * width) / 16; |
| 949 | |
Maciej W. Rozycki | 36f7140 | 2007-02-12 00:54:53 -0800 | [diff] [blame] | 950 | if (sy < dy) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | src = tga_fb + (sy + height) * width * 4; |
| 952 | dst = tga_fb + (dy + height) * width * 4; |
| 953 | |
| 954 | for (i = 0; i < n16; ++i) { |
| 955 | src -= 64; |
| 956 | dst -= 64; |
| 957 | __raw_writel(0xffff, src); |
| 958 | wmb(); |
| 959 | __raw_writel(0xffff, dst); |
| 960 | wmb(); |
| 961 | } |
| 962 | } else { |
| 963 | src = tga_fb + sy * width * 4; |
| 964 | dst = tga_fb + dy * width * 4; |
| 965 | |
| 966 | for (i = 0; i < n16; ++i) { |
| 967 | __raw_writel(0xffff, src); |
| 968 | wmb(); |
| 969 | __raw_writel(0xffff, dst); |
| 970 | wmb(); |
| 971 | src += 64; |
| 972 | dst += 64; |
| 973 | } |
| 974 | } |
| 975 | |
| 976 | /* Reset the MODE register to normal. */ |
| 977 | __raw_writel(TGA_MODE_SBM_24BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG); |
| 978 | } |
| 979 | |
| 980 | /* The general case of forward copy in 8bpp mode. */ |
| 981 | static inline void |
| 982 | copyarea_foreward_8bpp(struct fb_info *info, u32 dx, u32 dy, u32 sx, u32 sy, |
| 983 | u32 height, u32 width, u32 line_length) |
| 984 | { |
| 985 | struct tga_par *par = (struct tga_par *) info->par; |
| 986 | unsigned long i, copied, left; |
| 987 | unsigned long dpos, spos, dalign, salign, yincr; |
| 988 | u32 smask_first, dmask_first, dmask_last; |
| 989 | int pixel_shift, need_prime, need_second; |
| 990 | unsigned long n64, n32, xincr_first; |
| 991 | void __iomem *tga_regs; |
| 992 | void __iomem *tga_fb; |
| 993 | |
| 994 | yincr = line_length; |
| 995 | if (dy > sy) { |
| 996 | dy += height - 1; |
| 997 | sy += height - 1; |
| 998 | yincr = -yincr; |
| 999 | } |
| 1000 | |
| 1001 | /* Compute the offsets and alignments in the frame buffer. |
| 1002 | More than anything else, these control how we do copies. */ |
| 1003 | dpos = dy * line_length + dx; |
| 1004 | spos = sy * line_length + sx; |
| 1005 | dalign = dpos & 7; |
| 1006 | salign = spos & 7; |
| 1007 | dpos &= -8; |
| 1008 | spos &= -8; |
| 1009 | |
| 1010 | /* Compute the value for the PIXELSHIFT register. This controls |
| 1011 | both non-co-aligned source and destination and copy direction. */ |
| 1012 | if (dalign >= salign) |
| 1013 | pixel_shift = dalign - salign; |
| 1014 | else |
| 1015 | pixel_shift = 8 - (salign - dalign); |
| 1016 | |
| 1017 | /* Figure out if we need an additional priming step for the |
| 1018 | residue register. */ |
| 1019 | need_prime = (salign > dalign); |
| 1020 | if (need_prime) |
| 1021 | dpos -= 8; |
| 1022 | |
| 1023 | /* Begin by copying the leading unaligned destination. Copy enough |
| 1024 | to make the next destination address 32-byte aligned. */ |
| 1025 | copied = 32 - (dalign + (dpos & 31)); |
| 1026 | if (copied == 32) |
| 1027 | copied = 0; |
| 1028 | xincr_first = (copied + 7) & -8; |
| 1029 | smask_first = dmask_first = (1ul << copied) - 1; |
| 1030 | smask_first <<= salign; |
| 1031 | dmask_first <<= dalign + need_prime*8; |
| 1032 | if (need_prime && copied > 24) |
| 1033 | copied -= 8; |
| 1034 | left = width - copied; |
| 1035 | |
| 1036 | /* Care for small copies. */ |
| 1037 | if (copied > width) { |
| 1038 | u32 t; |
| 1039 | t = (1ul << width) - 1; |
| 1040 | t <<= dalign + need_prime*8; |
| 1041 | dmask_first &= t; |
| 1042 | left = 0; |
| 1043 | } |
| 1044 | |
| 1045 | /* Attempt to use 64-byte copies. This is only possible if the |
| 1046 | source and destination are co-aligned at 64 bytes. */ |
| 1047 | n64 = need_second = 0; |
| 1048 | if ((dpos & 63) == (spos & 63) |
| 1049 | && (height == 1 || line_length % 64 == 0)) { |
| 1050 | /* We may need a 32-byte copy to ensure 64 byte alignment. */ |
| 1051 | need_second = (dpos + xincr_first) & 63; |
| 1052 | if ((need_second & 32) != need_second) |
| 1053 | printk(KERN_ERR "tgafb: need_second wrong\n"); |
| 1054 | if (left >= need_second + 64) { |
| 1055 | left -= need_second; |
| 1056 | n64 = left / 64; |
| 1057 | left %= 64; |
| 1058 | } else |
| 1059 | need_second = 0; |
| 1060 | } |
| 1061 | |
| 1062 | /* Copy trailing full 32-byte sections. This will be the main |
| 1063 | loop if the 64 byte loop can't be used. */ |
| 1064 | n32 = left / 32; |
| 1065 | left %= 32; |
| 1066 | |
| 1067 | /* Copy the trailing unaligned destination. */ |
| 1068 | dmask_last = (1ul << left) - 1; |
| 1069 | |
| 1070 | tga_regs = par->tga_regs_base; |
| 1071 | tga_fb = par->tga_fb_base; |
| 1072 | |
| 1073 | /* Set up the MODE and PIXELSHIFT registers. */ |
| 1074 | __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_COPY, tga_regs+TGA_MODE_REG); |
| 1075 | __raw_writel(pixel_shift, tga_regs+TGA_PIXELSHIFT_REG); |
| 1076 | wmb(); |
| 1077 | |
| 1078 | for (i = 0; i < height; ++i) { |
| 1079 | unsigned long j; |
| 1080 | void __iomem *sfb; |
| 1081 | void __iomem *dfb; |
| 1082 | |
| 1083 | sfb = tga_fb + spos; |
| 1084 | dfb = tga_fb + dpos; |
| 1085 | if (dmask_first) { |
| 1086 | __raw_writel(smask_first, sfb); |
| 1087 | wmb(); |
| 1088 | __raw_writel(dmask_first, dfb); |
| 1089 | wmb(); |
| 1090 | sfb += xincr_first; |
| 1091 | dfb += xincr_first; |
| 1092 | } |
| 1093 | |
| 1094 | if (need_second) { |
| 1095 | __raw_writel(0xffffffff, sfb); |
| 1096 | wmb(); |
| 1097 | __raw_writel(0xffffffff, dfb); |
| 1098 | wmb(); |
| 1099 | sfb += 32; |
| 1100 | dfb += 32; |
| 1101 | } |
| 1102 | |
| 1103 | if (n64 && (((unsigned long)sfb | (unsigned long)dfb) & 63)) |
| 1104 | printk(KERN_ERR |
| 1105 | "tgafb: misaligned copy64 (s:%p, d:%p)\n", |
| 1106 | sfb, dfb); |
| 1107 | |
| 1108 | for (j = 0; j < n64; ++j) { |
| 1109 | __raw_writel(sfb - tga_fb, tga_regs+TGA_COPY64_SRC); |
| 1110 | wmb(); |
| 1111 | __raw_writel(dfb - tga_fb, tga_regs+TGA_COPY64_DST); |
| 1112 | wmb(); |
| 1113 | sfb += 64; |
| 1114 | dfb += 64; |
| 1115 | } |
| 1116 | |
| 1117 | for (j = 0; j < n32; ++j) { |
| 1118 | __raw_writel(0xffffffff, sfb); |
| 1119 | wmb(); |
| 1120 | __raw_writel(0xffffffff, dfb); |
| 1121 | wmb(); |
| 1122 | sfb += 32; |
| 1123 | dfb += 32; |
| 1124 | } |
| 1125 | |
| 1126 | if (dmask_last) { |
| 1127 | __raw_writel(0xffffffff, sfb); |
| 1128 | wmb(); |
| 1129 | __raw_writel(dmask_last, dfb); |
| 1130 | wmb(); |
| 1131 | } |
| 1132 | |
| 1133 | spos += yincr; |
| 1134 | dpos += yincr; |
| 1135 | } |
| 1136 | |
| 1137 | /* Reset the MODE register to normal. */ |
| 1138 | __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG); |
| 1139 | } |
| 1140 | |
| 1141 | /* The (almost) general case of backward copy in 8bpp mode. */ |
| 1142 | static inline void |
| 1143 | copyarea_backward_8bpp(struct fb_info *info, u32 dx, u32 dy, u32 sx, u32 sy, |
| 1144 | u32 height, u32 width, u32 line_length, |
| 1145 | const struct fb_copyarea *area) |
| 1146 | { |
| 1147 | struct tga_par *par = (struct tga_par *) info->par; |
| 1148 | unsigned long i, left, yincr; |
| 1149 | unsigned long depos, sepos, dealign, sealign; |
| 1150 | u32 mask_first, mask_last; |
| 1151 | unsigned long n32; |
| 1152 | void __iomem *tga_regs; |
| 1153 | void __iomem *tga_fb; |
| 1154 | |
| 1155 | yincr = line_length; |
| 1156 | if (dy > sy) { |
| 1157 | dy += height - 1; |
| 1158 | sy += height - 1; |
| 1159 | yincr = -yincr; |
| 1160 | } |
| 1161 | |
| 1162 | /* Compute the offsets and alignments in the frame buffer. |
| 1163 | More than anything else, these control how we do copies. */ |
| 1164 | depos = dy * line_length + dx + width; |
| 1165 | sepos = sy * line_length + sx + width; |
| 1166 | dealign = depos & 7; |
| 1167 | sealign = sepos & 7; |
| 1168 | |
| 1169 | /* ??? The documentation appears to be incorrect (or very |
| 1170 | misleading) wrt how pixel shifting works in backward copy |
| 1171 | mode, i.e. when PIXELSHIFT is negative. I give up for now. |
| 1172 | Do handle the common case of co-aligned backward copies, |
| 1173 | but frob everything else back on generic code. */ |
| 1174 | if (dealign != sealign) { |
| 1175 | cfb_copyarea(info, area); |
| 1176 | return; |
| 1177 | } |
| 1178 | |
| 1179 | /* We begin the copy with the trailing pixels of the |
| 1180 | unaligned destination. */ |
| 1181 | mask_first = (1ul << dealign) - 1; |
| 1182 | left = width - dealign; |
| 1183 | |
| 1184 | /* Care for small copies. */ |
| 1185 | if (dealign > width) { |
| 1186 | mask_first ^= (1ul << (dealign - width)) - 1; |
| 1187 | left = 0; |
| 1188 | } |
| 1189 | |
| 1190 | /* Next copy full words at a time. */ |
| 1191 | n32 = left / 32; |
| 1192 | left %= 32; |
| 1193 | |
| 1194 | /* Finally copy the unaligned head of the span. */ |
| 1195 | mask_last = -1 << (32 - left); |
| 1196 | |
| 1197 | tga_regs = par->tga_regs_base; |
| 1198 | tga_fb = par->tga_fb_base; |
| 1199 | |
| 1200 | /* Set up the MODE and PIXELSHIFT registers. */ |
| 1201 | __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_COPY, tga_regs+TGA_MODE_REG); |
| 1202 | __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG); |
| 1203 | wmb(); |
| 1204 | |
| 1205 | for (i = 0; i < height; ++i) { |
| 1206 | unsigned long j; |
| 1207 | void __iomem *sfb; |
| 1208 | void __iomem *dfb; |
| 1209 | |
| 1210 | sfb = tga_fb + sepos; |
| 1211 | dfb = tga_fb + depos; |
| 1212 | if (mask_first) { |
| 1213 | __raw_writel(mask_first, sfb); |
| 1214 | wmb(); |
| 1215 | __raw_writel(mask_first, dfb); |
| 1216 | wmb(); |
| 1217 | } |
| 1218 | |
| 1219 | for (j = 0; j < n32; ++j) { |
| 1220 | sfb -= 32; |
| 1221 | dfb -= 32; |
| 1222 | __raw_writel(0xffffffff, sfb); |
| 1223 | wmb(); |
| 1224 | __raw_writel(0xffffffff, dfb); |
| 1225 | wmb(); |
| 1226 | } |
| 1227 | |
| 1228 | if (mask_last) { |
| 1229 | sfb -= 32; |
| 1230 | dfb -= 32; |
| 1231 | __raw_writel(mask_last, sfb); |
| 1232 | wmb(); |
| 1233 | __raw_writel(mask_last, dfb); |
| 1234 | wmb(); |
| 1235 | } |
| 1236 | |
| 1237 | sepos += yincr; |
| 1238 | depos += yincr; |
| 1239 | } |
| 1240 | |
| 1241 | /* Reset the MODE register to normal. */ |
| 1242 | __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG); |
| 1243 | } |
| 1244 | |
| 1245 | static void |
| 1246 | tgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area) |
| 1247 | { |
| 1248 | unsigned long dx, dy, width, height, sx, sy, vxres, vyres; |
| 1249 | unsigned long line_length, bpp; |
| 1250 | |
| 1251 | dx = area->dx; |
| 1252 | dy = area->dy; |
| 1253 | width = area->width; |
| 1254 | height = area->height; |
| 1255 | sx = area->sx; |
| 1256 | sy = area->sy; |
| 1257 | vxres = info->var.xres_virtual; |
| 1258 | vyres = info->var.yres_virtual; |
| 1259 | line_length = info->fix.line_length; |
| 1260 | |
| 1261 | /* The top left corners must be in the virtual screen. */ |
| 1262 | if (dx > vxres || sx > vxres || dy > vyres || sy > vyres) |
| 1263 | return; |
| 1264 | |
| 1265 | /* Clip the destination. */ |
| 1266 | if (dx + width > vxres) |
| 1267 | width = vxres - dx; |
| 1268 | if (dy + height > vyres) |
| 1269 | height = vyres - dy; |
| 1270 | |
| 1271 | /* The source must be completely inside the virtual screen. */ |
| 1272 | if (sx + width > vxres || sy + height > vyres) |
| 1273 | return; |
| 1274 | |
| 1275 | bpp = info->var.bits_per_pixel; |
| 1276 | |
| 1277 | /* Detect copies of the entire line. */ |
| 1278 | if (width * (bpp >> 3) == line_length) { |
| 1279 | if (bpp == 8) |
| 1280 | copyarea_line_8bpp(info, dy, sy, height, width); |
| 1281 | else |
| 1282 | copyarea_line_32bpp(info, dy, sy, height, width); |
| 1283 | } |
| 1284 | |
| 1285 | /* ??? The documentation is unclear to me exactly how the pixelshift |
| 1286 | register works in 32bpp mode. Since I don't have hardware to test, |
| 1287 | give up for now and fall back on the generic routines. */ |
| 1288 | else if (bpp == 32) |
| 1289 | cfb_copyarea(info, area); |
| 1290 | |
| 1291 | /* Detect overlapping source and destination that requires |
| 1292 | a backward copy. */ |
| 1293 | else if (dy == sy && dx > sx && dx < sx + width) |
| 1294 | copyarea_backward_8bpp(info, dx, dy, sx, sy, height, |
| 1295 | width, line_length, area); |
| 1296 | else |
| 1297 | copyarea_foreward_8bpp(info, dx, dy, sx, sy, height, |
| 1298 | width, line_length); |
| 1299 | } |
| 1300 | |
| 1301 | |
| 1302 | /* |
| 1303 | * Initialisation |
| 1304 | */ |
| 1305 | |
| 1306 | static void |
| 1307 | tgafb_init_fix(struct fb_info *info) |
| 1308 | { |
| 1309 | struct tga_par *par = (struct tga_par *)info->par; |
| 1310 | u8 tga_type = par->tga_type; |
| 1311 | const char *tga_type_name; |
| 1312 | |
| 1313 | switch (tga_type) { |
| 1314 | case TGA_TYPE_8PLANE: |
| 1315 | tga_type_name = "Digital ZLXp-E1"; |
| 1316 | break; |
| 1317 | case TGA_TYPE_24PLANE: |
| 1318 | tga_type_name = "Digital ZLXp-E2"; |
| 1319 | break; |
| 1320 | case TGA_TYPE_24PLUSZ: |
| 1321 | tga_type_name = "Digital ZLXp-E3"; |
| 1322 | break; |
| 1323 | default: |
| 1324 | tga_type_name = "Unknown"; |
| 1325 | break; |
| 1326 | } |
| 1327 | |
| 1328 | strlcpy(info->fix.id, tga_type_name, sizeof(info->fix.id)); |
| 1329 | |
| 1330 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
| 1331 | info->fix.type_aux = 0; |
| 1332 | info->fix.visual = (tga_type == TGA_TYPE_8PLANE |
| 1333 | ? FB_VISUAL_PSEUDOCOLOR |
Maciej W. Rozycki | be60118 | 2007-02-12 00:54:54 -0800 | [diff] [blame] | 1334 | : FB_VISUAL_DIRECTCOLOR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | |
| 1336 | info->fix.line_length = par->xres * (par->bits_per_pixel >> 3); |
| 1337 | info->fix.smem_start = (size_t) par->tga_fb_base; |
| 1338 | info->fix.smem_len = info->fix.line_length * par->yres; |
| 1339 | info->fix.mmio_start = (size_t) par->tga_regs_base; |
| 1340 | info->fix.mmio_len = 512; |
| 1341 | |
| 1342 | info->fix.xpanstep = 0; |
| 1343 | info->fix.ypanstep = 0; |
| 1344 | info->fix.ywrapstep = 0; |
| 1345 | |
| 1346 | info->fix.accel = FB_ACCEL_DEC_TGA; |
| 1347 | } |
| 1348 | |
| 1349 | static __devinit int |
| 1350 | tgafb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent) |
| 1351 | { |
| 1352 | static unsigned int const fb_offset_presets[4] = { |
| 1353 | TGA_8PLANE_FB_OFFSET, |
| 1354 | TGA_24PLANE_FB_OFFSET, |
| 1355 | 0xffffffff, |
| 1356 | TGA_24PLUSZ_FB_OFFSET |
| 1357 | }; |
| 1358 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | void __iomem *mem_base; |
| 1360 | unsigned long bar0_start, bar0_len; |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1361 | struct fb_info *info; |
| 1362 | struct tga_par *par; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | u8 tga_type; |
| 1364 | int ret; |
| 1365 | |
| 1366 | /* Enable device in PCI config. */ |
| 1367 | if (pci_enable_device(pdev)) { |
| 1368 | printk(KERN_ERR "tgafb: Cannot enable PCI device\n"); |
| 1369 | return -ENODEV; |
| 1370 | } |
| 1371 | |
| 1372 | /* Allocate the fb and par structures. */ |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1373 | info = framebuffer_alloc(sizeof(struct tga_par), &pdev->dev); |
| 1374 | if (!info) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | printk(KERN_ERR "tgafb: Cannot allocate memory\n"); |
| 1376 | return -ENOMEM; |
| 1377 | } |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1378 | |
| 1379 | par = info->par; |
| 1380 | pci_set_drvdata(pdev, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | |
| 1382 | /* Request the mem regions. */ |
| 1383 | bar0_start = pci_resource_start(pdev, 0); |
| 1384 | bar0_len = pci_resource_len(pdev, 0); |
| 1385 | ret = -ENODEV; |
| 1386 | if (!request_mem_region (bar0_start, bar0_len, "tgafb")) { |
| 1387 | printk(KERN_ERR "tgafb: cannot reserve FB region\n"); |
| 1388 | goto err0; |
| 1389 | } |
| 1390 | |
| 1391 | /* Map the framebuffer. */ |
| 1392 | mem_base = ioremap(bar0_start, bar0_len); |
| 1393 | if (!mem_base) { |
| 1394 | printk(KERN_ERR "tgafb: Cannot map MMIO\n"); |
| 1395 | goto err1; |
| 1396 | } |
| 1397 | |
| 1398 | /* Grab info about the card. */ |
| 1399 | tga_type = (readl(mem_base) >> 12) & 0x0f; |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1400 | par->pdev = pdev; |
| 1401 | par->tga_mem_base = mem_base; |
| 1402 | par->tga_fb_base = mem_base + fb_offset_presets[tga_type]; |
| 1403 | par->tga_regs_base = mem_base + TGA_REGS_OFFSET; |
| 1404 | par->tga_type = tga_type; |
| 1405 | pci_read_config_byte(pdev, PCI_REVISION_ID, &par->tga_chip_rev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | |
| 1407 | /* Setup framebuffer. */ |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1408 | info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | |
| 1409 | FBINFO_HWACCEL_IMAGEBLIT | FBINFO_HWACCEL_FILLRECT; |
| 1410 | info->fbops = &tgafb_ops; |
| 1411 | info->screen_base = par->tga_fb_base; |
| 1412 | info->pseudo_palette = (void *)(par + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | |
| 1414 | /* This should give a reasonable default video mode. */ |
| 1415 | |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1416 | ret = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | tga_type == TGA_TYPE_8PLANE ? 8 : 32); |
| 1418 | if (ret == 0 || ret == 4) { |
| 1419 | printk(KERN_ERR "tgafb: Could not find valid video mode\n"); |
| 1420 | ret = -EINVAL; |
| 1421 | goto err1; |
| 1422 | } |
| 1423 | |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1424 | if (fb_alloc_cmap(&info->cmap, 256, 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | printk(KERN_ERR "tgafb: Could not allocate color map\n"); |
| 1426 | ret = -ENOMEM; |
| 1427 | goto err1; |
| 1428 | } |
| 1429 | |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1430 | tgafb_set_par(info); |
| 1431 | tgafb_init_fix(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1433 | if (register_framebuffer(info) < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | printk(KERN_ERR "tgafb: Could not register framebuffer\n"); |
| 1435 | ret = -EINVAL; |
| 1436 | goto err1; |
| 1437 | } |
| 1438 | |
| 1439 | printk(KERN_INFO "tgafb: DC21030 [TGA] detected, rev=0x%02x\n", |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1440 | par->tga_chip_rev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | printk(KERN_INFO "tgafb: at PCI bus %d, device %d, function %d\n", |
| 1442 | pdev->bus->number, PCI_SLOT(pdev->devfn), |
| 1443 | PCI_FUNC(pdev->devfn)); |
| 1444 | printk(KERN_INFO "fb%d: %s frame buffer device at 0x%lx\n", |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1445 | info->node, info->fix.id, bar0_start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | |
| 1447 | return 0; |
| 1448 | |
| 1449 | err1: |
Amol Lad | e4bf051 | 2006-12-08 02:40:04 -0800 | [diff] [blame] | 1450 | if (mem_base) |
| 1451 | iounmap(mem_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | release_mem_region(bar0_start, bar0_len); |
| 1453 | err0: |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1454 | framebuffer_release(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1455 | return ret; |
| 1456 | } |
| 1457 | |
Maciej W. Rozycki | 1b2f2fe | 2007-02-12 00:54:56 -0800 | [diff] [blame^] | 1458 | static void __devexit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | tgafb_pci_unregister(struct pci_dev *pdev) |
| 1460 | { |
| 1461 | struct fb_info *info = pci_get_drvdata(pdev); |
| 1462 | struct tga_par *par = info->par; |
| 1463 | |
| 1464 | if (!info) |
| 1465 | return; |
| 1466 | unregister_framebuffer(info); |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1467 | fb_dealloc_cmap(&info->cmap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | iounmap(par->tga_mem_base); |
| 1469 | release_mem_region(pci_resource_start(pdev, 0), |
| 1470 | pci_resource_len(pdev, 0)); |
Maciej W. Rozycki | ee9a25e | 2007-02-12 00:54:52 -0800 | [diff] [blame] | 1471 | framebuffer_release(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | } |
| 1473 | |
Maciej W. Rozycki | 1b2f2fe | 2007-02-12 00:54:56 -0800 | [diff] [blame^] | 1474 | static void __devexit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | tgafb_exit(void) |
| 1476 | { |
| 1477 | pci_unregister_driver(&tgafb_driver); |
| 1478 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | |
| 1480 | #ifndef MODULE |
Maciej W. Rozycki | 1b2f2fe | 2007-02-12 00:54:56 -0800 | [diff] [blame^] | 1481 | static int __devinit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | tgafb_setup(char *arg) |
| 1483 | { |
| 1484 | char *this_opt; |
| 1485 | |
| 1486 | if (arg && *arg) { |
| 1487 | while ((this_opt = strsep(&arg, ","))) { |
| 1488 | if (!*this_opt) |
| 1489 | continue; |
| 1490 | if (!strncmp(this_opt, "mode:", 5)) |
| 1491 | mode_option = this_opt+5; |
| 1492 | else |
| 1493 | printk(KERN_ERR |
| 1494 | "tgafb: unknown parameter %s\n", |
| 1495 | this_opt); |
| 1496 | } |
| 1497 | } |
| 1498 | |
| 1499 | return 0; |
| 1500 | } |
| 1501 | #endif /* !MODULE */ |
| 1502 | |
Maciej W. Rozycki | 1b2f2fe | 2007-02-12 00:54:56 -0800 | [diff] [blame^] | 1503 | static int __devinit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1504 | tgafb_init(void) |
| 1505 | { |
| 1506 | #ifndef MODULE |
| 1507 | char *option = NULL; |
| 1508 | |
| 1509 | if (fb_get_options("tgafb", &option)) |
| 1510 | return -ENODEV; |
| 1511 | tgafb_setup(option); |
| 1512 | #endif |
| 1513 | return pci_register_driver(&tgafb_driver); |
| 1514 | } |
| 1515 | |
| 1516 | /* |
| 1517 | * Modularisation |
| 1518 | */ |
| 1519 | |
| 1520 | module_init(tgafb_init); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | module_exit(tgafb_exit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | |
| 1523 | MODULE_DESCRIPTION("framebuffer driver for TGA chipset"); |
| 1524 | MODULE_LICENSE("GPL"); |