2 * linux/drivers/video/vt8623fb.c - fbdev driver for
3 * integrated graphic core in VIA VT8623 [CLE266] chipset
5 * Copyright (c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org>
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file COPYING in the main directory of this archive for
11 * Code is based on s3fb, some parts are from David Boucher's viafb
12 * (http://davesdomain.org.uk/viafb/)
15 #include <linux/version.h>
16 #include <linux/module.h>
17 #include <linux/kernel.h>
18 #include <linux/errno.h>
19 #include <linux/string.h>
21 #include <linux/tty.h>
22 #include <linux/slab.h>
23 #include <linux/delay.h>
25 #include <linux/svga.h>
26 #include <linux/init.h>
27 #include <linux/pci.h>
28 #include <linux/console.h> /* Why should fb driver call console functions? because acquire_console_sem() */
29 #include <video/vga.h>
35 struct vt8623fb_info {
36 char __iomem *mmio_base;
38 struct vgastate state;
39 struct mutex open_lock;
40 unsigned int ref_count;
41 u32 pseudo_palette[16];
46 /* ------------------------------------------------------------------------- */
48 static const struct svga_fb_format vt8623fb_formats[] = {
49 { 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
50 FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP8, FB_VISUAL_PSEUDOCOLOR, 16, 16},
51 { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
52 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 16, 16},
53 { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 1,
54 FB_TYPE_INTERLEAVED_PLANES, 1, FB_VISUAL_PSEUDOCOLOR, 16, 16},
55 { 8, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
56 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 8},
57 /* {16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0,
58 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4}, */
59 {16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0,
60 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4},
61 {32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
62 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 2},
66 static const struct svga_pll vt8623_pll = {2, 127, 2, 7, 0, 3,
67 60000, 300000, 14318};
69 /* CRT timing register sets */
71 struct vga_regset vt8623_h_total_regs[] = {{0x00, 0, 7}, {0x36, 3, 3}, VGA_REGSET_END};
72 struct vga_regset vt8623_h_display_regs[] = {{0x01, 0, 7}, VGA_REGSET_END};
73 struct vga_regset vt8623_h_blank_start_regs[] = {{0x02, 0, 7}, VGA_REGSET_END};
74 struct vga_regset vt8623_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7}, {0x33, 5, 5}, VGA_REGSET_END};
75 struct vga_regset vt8623_h_sync_start_regs[] = {{0x04, 0, 7}, {0x33, 4, 4}, VGA_REGSET_END};
76 struct vga_regset vt8623_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END};
78 struct vga_regset vt8623_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x35, 0, 0}, VGA_REGSET_END};
79 struct vga_regset vt8623_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x35, 2, 2}, VGA_REGSET_END};
80 struct vga_regset vt8623_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x35, 3, 3}, VGA_REGSET_END};
81 struct vga_regset vt8623_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END};
82 struct vga_regset vt8623_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x35, 1, 1}, VGA_REGSET_END};
83 struct vga_regset vt8623_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END};
85 struct vga_regset vt8623_offset_regs[] = {{0x13, 0, 7}, {0x35, 5, 7}, VGA_REGSET_END};
86 struct vga_regset vt8623_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, {0x33, 0, 2}, {0x35, 4, 4}, VGA_REGSET_END};
87 struct vga_regset vt8623_fetch_count_regs[] = {{0x1C, 0, 7}, {0x1D, 0, 1}, VGA_REGSET_END};
88 struct vga_regset vt8623_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x34, 0, 7}, {0x48, 0, 1}, VGA_REGSET_END};
90 struct svga_timing_regs vt8623_timing_regs = {
91 vt8623_h_total_regs, vt8623_h_display_regs, vt8623_h_blank_start_regs,
92 vt8623_h_blank_end_regs, vt8623_h_sync_start_regs, vt8623_h_sync_end_regs,
93 vt8623_v_total_regs, vt8623_v_display_regs, vt8623_v_blank_start_regs,
94 vt8623_v_blank_end_regs, vt8623_v_sync_start_regs, vt8623_v_sync_end_regs,
98 /* ------------------------------------------------------------------------- */
101 /* Module parameters */
103 static char *mode = "640x480-8@60";
109 MODULE_AUTHOR("(c) 2006 Ondrej Zajicek <santiago@crfreenet.org>");
110 MODULE_LICENSE("GPL");
111 MODULE_DESCRIPTION("fbdev driver for integrated graphics core in VIA VT8623 [CLE266]");
113 module_param(mode, charp, 0644);
114 MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc)");
117 module_param(mtrr, int, 0444);
118 MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)");
122 /* ------------------------------------------------------------------------- */
125 static struct fb_tile_ops vt8623fb_tile_ops = {
126 .fb_settile = svga_settile,
127 .fb_tilecopy = svga_tilecopy,
128 .fb_tilefill = svga_tilefill,
129 .fb_tileblit = svga_tileblit,
130 .fb_tilecursor = svga_tilecursor,
131 .fb_get_tilemax = svga_get_tilemax,
135 /* ------------------------------------------------------------------------- */
138 /* image data is MSB-first, fb structure is MSB-first too */
139 static inline u32 expand_color(u32 c)
141 return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF;
144 /* vt8623fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */
145 static void vt8623fb_iplan_imageblit(struct fb_info *info, const struct fb_image *image)
147 u32 fg = expand_color(image->fg_color);
148 u32 bg = expand_color(image->bg_color);
149 const u8 *src1, *src;
156 dst1 = info->screen_base + (image->dy * info->fix.line_length)
157 + ((image->dx / 8) * 4);
159 for (y = 0; y < image->height; y++) {
161 dst = (u32 __iomem *) dst1;
162 for (x = 0; x < image->width; x += 8) {
163 val = *(src++) * 0x01010101;
164 val = (val & fg) | (~val & bg);
165 fb_writel(val, dst++);
167 src1 += image->width / 8;
168 dst1 += info->fix.line_length;
172 /* vt8623fb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */
173 static void vt8623fb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
175 u32 fg = expand_color(rect->color);
180 dst1 = info->screen_base + (rect->dy * info->fix.line_length)
181 + ((rect->dx / 8) * 4);
183 for (y = 0; y < rect->height; y++) {
184 dst = (u32 __iomem *) dst1;
185 for (x = 0; x < rect->width; x += 8) {
186 fb_writel(fg, dst++);
188 dst1 += info->fix.line_length;
193 /* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */
194 static inline u32 expand_pixel(u32 c)
196 return (((c & 1) << 24) | ((c & 2) << 27) | ((c & 4) << 14) | ((c & 8) << 17) |
197 ((c & 16) << 4) | ((c & 32) << 7) | ((c & 64) >> 6) | ((c & 128) >> 3)) * 0xF;
200 /* vt8623fb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */
201 static void vt8623fb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image)
203 u32 fg = image->fg_color * 0x11111111;
204 u32 bg = image->bg_color * 0x11111111;
205 const u8 *src1, *src;
212 dst1 = info->screen_base + (image->dy * info->fix.line_length)
213 + ((image->dx / 8) * 4);
215 for (y = 0; y < image->height; y++) {
217 dst = (u32 __iomem *) dst1;
218 for (x = 0; x < image->width; x += 8) {
219 val = expand_pixel(*(src++));
220 val = (val & fg) | (~val & bg);
221 fb_writel(val, dst++);
223 src1 += image->width / 8;
224 dst1 += info->fix.line_length;
228 static void vt8623fb_imageblit(struct fb_info *info, const struct fb_image *image)
230 if ((info->var.bits_per_pixel == 4) && (image->depth == 1)
231 && ((image->width % 8) == 0) && ((image->dx % 8) == 0)) {
232 if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)
233 vt8623fb_iplan_imageblit(info, image);
235 vt8623fb_cfb4_imageblit(info, image);
237 cfb_imageblit(info, image);
240 static void vt8623fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
242 if ((info->var.bits_per_pixel == 4)
243 && ((rect->width % 8) == 0) && ((rect->dx % 8) == 0)
244 && (info->fix.type == FB_TYPE_INTERLEAVED_PLANES))
245 vt8623fb_iplan_fillrect(info, rect);
247 cfb_fillrect(info, rect);
251 /* ------------------------------------------------------------------------- */
254 static void vt8623_set_pixclock(struct fb_info *info, u32 pixclock)
260 rv = svga_compute_pll(&vt8623_pll, 1000000000 / pixclock, &m, &n, &r, info->node);
262 printk(KERN_ERR "fb%d: cannot set requested pixclock, keeping old value\n", info->node);
266 /* Set VGA misc register */
267 regval = vga_r(NULL, VGA_MIS_R);
268 vga_w(NULL, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD);
270 /* Set clock registers */
271 vga_wseq(NULL, 0x46, (n | (r << 6)));
272 vga_wseq(NULL, 0x47, m);
277 svga_wseq_mask(0x40, 0x02, 0x02);
278 svga_wseq_mask(0x40, 0x00, 0x02);
282 static int vt8623fb_open(struct fb_info *info, int user)
284 struct vt8623fb_info *par = info->par;
286 mutex_lock(&(par->open_lock));
287 if (par->ref_count == 0) {
288 memset(&(par->state), 0, sizeof(struct vgastate));
289 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP;
290 par->state.num_crtc = 0xA2;
291 par->state.num_seq = 0x50;
292 save_vga(&(par->state));
296 mutex_unlock(&(par->open_lock));
301 static int vt8623fb_release(struct fb_info *info, int user)
303 struct vt8623fb_info *par = info->par;
305 mutex_lock(&(par->open_lock));
306 if (par->ref_count == 0) {
307 mutex_unlock(&(par->open_lock));
311 if (par->ref_count == 1)
312 restore_vga(&(par->state));
315 mutex_unlock(&(par->open_lock));
320 static int vt8623fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
324 /* Find appropriate format */
325 rv = svga_match_format (vt8623fb_formats, var, NULL);
328 printk(KERN_ERR "fb%d: unsupported mode requested\n", info->node);
332 /* Do not allow to have real resoulution larger than virtual */
333 if (var->xres > var->xres_virtual)
334 var->xres_virtual = var->xres;
336 if (var->yres > var->yres_virtual)
337 var->yres_virtual = var->yres;
339 /* Round up xres_virtual to have proper alignment of lines */
340 step = vt8623fb_formats[rv].xresstep - 1;
341 var->xres_virtual = (var->xres_virtual+step) & ~step;
343 /* Check whether have enough memory */
344 mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual;
345 if (mem > info->screen_size)
347 printk(KERN_ERR "fb%d: not enough framebuffer memory (%d kB requested , %d kB available)\n", info->node, mem >> 10, (unsigned int) (info->screen_size >> 10));
351 /* Text mode is limited to 256 kB of memory */
352 if ((var->bits_per_pixel == 0) && (mem > (256*1024)))
354 printk(KERN_ERR "fb%d: text framebuffer size too large (%d kB requested, 256 kB possible)\n", info->node, mem >> 10);
358 rv = svga_check_timings (&vt8623_timing_regs, var, info->node);
361 printk(KERN_ERR "fb%d: invalid timings requested\n", info->node);
365 /* Interlaced mode not supported */
366 if (var->vmode & FB_VMODE_INTERLACED)
373 static int vt8623fb_set_par(struct fb_info *info)
375 u32 mode, offset_value, fetch_value, screen_size;
376 u32 bpp = info->var.bits_per_pixel;
379 info->fix.ypanstep = 1;
380 info->fix.line_length = (info->var.xres_virtual * bpp) / 8;
382 info->flags &= ~FBINFO_MISC_TILEBLITTING;
383 info->tileops = NULL;
385 /* in 4bpp supports 8p wide tiles only, any tiles otherwise */
386 info->pixmap.blit_x = (bpp == 4) ? (1 << (8 - 1)) : (~(u32)0);
387 info->pixmap.blit_y = ~(u32)0;
389 offset_value = (info->var.xres_virtual * bpp) / 64;
390 fetch_value = ((info->var.xres * bpp) / 128) + 4;
393 fetch_value = (info->var.xres / 8) + 8; /* + 0 is OK */
395 screen_size = info->var.yres_virtual * info->fix.line_length;
397 info->fix.ypanstep = 16;
398 info->fix.line_length = 0;
400 info->flags |= FBINFO_MISC_TILEBLITTING;
401 info->tileops = &vt8623fb_tile_ops;
403 /* supports 8x16 tiles only */
404 info->pixmap.blit_x = 1 << (8 - 1);
405 info->pixmap.blit_y = 1 << (16 - 1);
407 offset_value = info->var.xres_virtual / 16;
408 fetch_value = (info->var.xres / 8) + 8;
409 screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64;
412 info->var.xoffset = 0;
413 info->var.yoffset = 0;
414 info->var.activate = FB_ACTIVATE_NOW;
416 /* Unlock registers */
417 svga_wseq_mask(0x10, 0x01, 0x01);
418 svga_wcrt_mask(0x11, 0x00, 0x80);
419 svga_wcrt_mask(0x47, 0x00, 0x01);
421 /* Device, screen and sync off */
422 svga_wseq_mask(0x01, 0x20, 0x20);
423 svga_wcrt_mask(0x36, 0x30, 0x30);
424 svga_wcrt_mask(0x17, 0x00, 0x80);
426 /* Set default values */
427 svga_set_default_gfx_regs();
428 svga_set_default_atc_regs();
429 svga_set_default_seq_regs();
430 svga_set_default_crt_regs();
431 svga_wcrt_multi(vt8623_line_compare_regs, 0xFFFFFFFF);
432 svga_wcrt_multi(vt8623_start_address_regs, 0);
434 svga_wcrt_multi(vt8623_offset_regs, offset_value);
435 svga_wseq_multi(vt8623_fetch_count_regs, fetch_value);
437 if (info->var.vmode & FB_VMODE_DOUBLE)
438 svga_wcrt_mask(0x09, 0x80, 0x80);
440 svga_wcrt_mask(0x09, 0x00, 0x80);
442 svga_wseq_mask(0x1E, 0xF0, 0xF0); // DI/DVP bus
443 svga_wseq_mask(0x2A, 0x0F, 0x0F); // DI/DVP bus
444 svga_wseq_mask(0x16, 0x08, 0xBF); // FIFO read treshold
445 vga_wseq(NULL, 0x17, 0x1F); // FIFO depth
446 vga_wseq(NULL, 0x18, 0x4E);
447 svga_wseq_mask(0x1A, 0x08, 0x08); // enable MMIO ?
449 vga_wcrt(NULL, 0x32, 0x00);
450 vga_wcrt(NULL, 0x34, 0x00);
451 vga_wcrt(NULL, 0x6A, 0x80);
452 vga_wcrt(NULL, 0x6A, 0xC0);
454 vga_wgfx(NULL, 0x20, 0x00);
455 vga_wgfx(NULL, 0x21, 0x00);
456 vga_wgfx(NULL, 0x22, 0x00);
458 /* Set SR15 according to number of bits per pixel */
459 mode = svga_match_format(vt8623fb_formats, &(info->var), &(info->fix));
462 pr_debug("fb%d: text mode\n", info->node);
463 svga_set_textmode_vga_regs();
464 svga_wseq_mask(0x15, 0x00, 0xFE);
465 svga_wcrt_mask(0x11, 0x60, 0x70);
468 pr_debug("fb%d: 4 bit pseudocolor\n", info->node);
469 vga_wgfx(NULL, VGA_GFX_MODE, 0x40);
470 svga_wseq_mask(0x15, 0x20, 0xFE);
471 svga_wcrt_mask(0x11, 0x00, 0x70);
474 pr_debug("fb%d: 4 bit pseudocolor, planar\n", info->node);
475 svga_wseq_mask(0x15, 0x00, 0xFE);
476 svga_wcrt_mask(0x11, 0x00, 0x70);
479 pr_debug("fb%d: 8 bit pseudocolor\n", info->node);
480 svga_wseq_mask(0x15, 0x22, 0xFE);
483 pr_debug("fb%d: 5/6/5 truecolor\n", info->node);
484 svga_wseq_mask(0x15, 0xB6, 0xFE);
487 pr_debug("fb%d: 8/8/8 truecolor\n", info->node);
488 svga_wseq_mask(0x15, 0xAE, 0xFE);
491 printk(KERN_ERR "vt8623fb: unsupported mode - bug\n");
495 vt8623_set_pixclock(info, info->var.pixclock);
496 svga_set_timings(&vt8623_timing_regs, &(info->var), 1, 1,
497 (info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1, 1,
500 memset_io(info->screen_base, 0x00, screen_size);
502 /* Device and screen back on */
503 svga_wcrt_mask(0x17, 0x80, 0x80);
504 svga_wcrt_mask(0x36, 0x00, 0x30);
505 svga_wseq_mask(0x01, 0x00, 0x20);
511 static int vt8623fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
512 u_int transp, struct fb_info *fb)
514 switch (fb->var.bits_per_pixel) {
520 outb(0x0F, VGA_PEL_MSK);
521 outb(regno, VGA_PEL_IW);
522 outb(red >> 10, VGA_PEL_D);
523 outb(green >> 10, VGA_PEL_D);
524 outb(blue >> 10, VGA_PEL_D);
530 outb(0xFF, VGA_PEL_MSK);
531 outb(regno, VGA_PEL_IW);
532 outb(red >> 10, VGA_PEL_D);
533 outb(green >> 10, VGA_PEL_D);
534 outb(blue >> 10, VGA_PEL_D);
540 if (fb->var.green.length == 5)
541 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) |
542 ((green & 0xF800) >> 6) | ((blue & 0xF800) >> 11);
543 else if (fb->var.green.length == 6)
544 ((u32*)fb->pseudo_palette)[regno] = (red & 0xF800) |
545 ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11);
554 /* ((transp & 0xFF00) << 16) */
555 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xFF00) << 8) |
556 (green & 0xFF00) | ((blue & 0xFF00) >> 8);
566 static int vt8623fb_blank(int blank_mode, struct fb_info *info)
568 switch (blank_mode) {
569 case FB_BLANK_UNBLANK:
570 pr_debug("fb%d: unblank\n", info->node);
571 svga_wcrt_mask(0x36, 0x00, 0x30);
572 svga_wseq_mask(0x01, 0x00, 0x20);
574 case FB_BLANK_NORMAL:
575 pr_debug("fb%d: blank\n", info->node);
576 svga_wcrt_mask(0x36, 0x00, 0x30);
577 svga_wseq_mask(0x01, 0x20, 0x20);
579 case FB_BLANK_HSYNC_SUSPEND:
580 pr_debug("fb%d: DPMS standby (hsync off)\n", info->node);
581 svga_wcrt_mask(0x36, 0x10, 0x30);
582 svga_wseq_mask(0x01, 0x20, 0x20);
584 case FB_BLANK_VSYNC_SUSPEND:
585 pr_debug("fb%d: DPMS suspend (vsync off)\n", info->node);
586 svga_wcrt_mask(0x36, 0x20, 0x30);
587 svga_wseq_mask(0x01, 0x20, 0x20);
589 case FB_BLANK_POWERDOWN:
590 pr_debug("fb%d: DPMS off (no sync)\n", info->node);
591 svga_wcrt_mask(0x36, 0x30, 0x30);
592 svga_wseq_mask(0x01, 0x20, 0x20);
600 static int vt8623fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
604 /* Calculate the offset */
605 if (var->bits_per_pixel == 0) {
606 offset = (var->yoffset / 16) * var->xres_virtual + var->xoffset;
607 offset = offset >> 3;
609 offset = (var->yoffset * info->fix.line_length) +
610 (var->xoffset * var->bits_per_pixel / 8);
611 offset = offset >> ((var->bits_per_pixel == 4) ? 2 : 1);
615 svga_wcrt_multi(vt8623_start_address_regs, offset);
621 /* ------------------------------------------------------------------------- */
624 /* Frame buffer operations */
626 static struct fb_ops vt8623fb_ops = {
627 .owner = THIS_MODULE,
628 .fb_open = vt8623fb_open,
629 .fb_release = vt8623fb_release,
630 .fb_check_var = vt8623fb_check_var,
631 .fb_set_par = vt8623fb_set_par,
632 .fb_setcolreg = vt8623fb_setcolreg,
633 .fb_blank = vt8623fb_blank,
634 .fb_pan_display = vt8623fb_pan_display,
635 .fb_fillrect = vt8623fb_fillrect,
636 .fb_copyarea = cfb_copyarea,
637 .fb_imageblit = vt8623fb_imageblit,
638 .fb_get_caps = svga_get_caps,
644 static int __devinit vt8623_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
646 struct fb_info *info;
647 struct vt8623fb_info *par;
648 unsigned int memsize1, memsize2;
651 /* Ignore secondary VGA device because there is no VGA arbitration */
652 if (! svga_primary_device(dev)) {
653 dev_info(&(dev->dev), "ignoring secondary device\n");
657 /* Allocate and fill driver data structure */
658 info = framebuffer_alloc(sizeof(struct vt8623fb_info), NULL);
660 dev_err(&(dev->dev), "cannot allocate memory\n");
665 mutex_init(&par->open_lock);
667 info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN;
668 info->fbops = &vt8623fb_ops;
670 /* Prepare PCI device */
672 rc = pci_enable_device(dev);
674 dev_err(&(dev->dev), "cannot enable PCI device\n");
675 goto err_enable_device;
678 rc = pci_request_regions(dev, "vt8623fb");
680 dev_err(&(dev->dev), "cannot reserve framebuffer region\n");
681 goto err_request_regions;
684 info->fix.smem_start = pci_resource_start(dev, 0);
685 info->fix.smem_len = pci_resource_len(dev, 0);
686 info->fix.mmio_start = pci_resource_start(dev, 1);
687 info->fix.mmio_len = pci_resource_len(dev, 1);
689 /* Map physical IO memory address into kernel space */
690 info->screen_base = pci_iomap(dev, 0, 0);
691 if (! info->screen_base) {
693 dev_err(&(dev->dev), "iomap for framebuffer failed\n");
697 par->mmio_base = pci_iomap(dev, 1, 0);
698 if (! par->mmio_base) {
700 dev_err(&(dev->dev), "iomap for MMIO failed\n");
704 /* Find how many physical memory there is on card */
705 memsize1 = (vga_rseq(NULL, 0x34) + 1) >> 1;
706 memsize2 = vga_rseq(NULL, 0x39) << 2;
708 if ((16 <= memsize1) && (memsize1 <= 64) && (memsize1 == memsize2))
709 info->screen_size = memsize1 << 20;
711 dev_err(&(dev->dev), "memory size detection failed (%x %x), suppose 16 MB\n", memsize1, memsize2);
712 info->screen_size = 16 << 20;
715 info->fix.smem_len = info->screen_size;
716 strcpy(info->fix.id, "VIA VT8623");
717 info->fix.type = FB_TYPE_PACKED_PIXELS;
718 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
719 info->fix.ypanstep = 0;
720 info->fix.accel = FB_ACCEL_NONE;
721 info->pseudo_palette = (void*)par->pseudo_palette;
723 /* Prepare startup mode */
725 rc = fb_find_mode(&(info->var), info, mode, NULL, 0, NULL, 8);
726 if (! ((rc == 1) || (rc == 2))) {
728 dev_err(&(dev->dev), "mode %s not found\n", mode);
732 rc = fb_alloc_cmap(&info->cmap, 256, 0);
734 dev_err(&(dev->dev), "cannot allocate colormap\n");
738 rc = register_framebuffer(info);
740 dev_err(&(dev->dev), "cannot register framebugger\n");
744 printk(KERN_INFO "fb%d: %s on %s, %d MB RAM\n", info->node, info->fix.id,
745 pci_name(dev), info->fix.smem_len >> 20);
747 /* Record a reference to the driver data */
748 pci_set_drvdata(dev, info);
753 par->mtrr_reg = mtrr_add(info->fix.smem_start, info->fix.smem_len, MTRR_TYPE_WRCOMB, 1);
761 fb_dealloc_cmap(&info->cmap);
764 pci_iounmap(dev, par->mmio_base);
766 pci_iounmap(dev, info->screen_base);
768 pci_release_regions(dev);
770 /* pci_disable_device(dev); */
772 framebuffer_release(info);
778 static void __devexit vt8623_pci_remove(struct pci_dev *dev)
780 struct fb_info *info = pci_get_drvdata(dev);
783 struct vt8623fb_info *par = info->par;
786 if (par->mtrr_reg >= 0) {
787 mtrr_del(par->mtrr_reg, 0, 0);
792 unregister_framebuffer(info);
793 fb_dealloc_cmap(&info->cmap);
795 pci_iounmap(dev, info->screen_base);
796 pci_iounmap(dev, par->mmio_base);
797 pci_release_regions(dev);
798 /* pci_disable_device(dev); */
800 pci_set_drvdata(dev, NULL);
801 framebuffer_release(info);
809 static int vt8623_pci_suspend(struct pci_dev* dev, pm_message_t state)
811 struct fb_info *info = pci_get_drvdata(dev);
812 struct vt8623fb_info *par = info->par;
814 dev_info(&(dev->dev), "suspend\n");
816 acquire_console_sem();
817 mutex_lock(&(par->open_lock));
819 if ((state.event == PM_EVENT_FREEZE) || (par->ref_count == 0)) {
820 mutex_unlock(&(par->open_lock));
821 release_console_sem();
825 fb_set_suspend(info, 1);
828 pci_disable_device(dev);
829 pci_set_power_state(dev, pci_choose_state(dev, state));
831 mutex_unlock(&(par->open_lock));
832 release_console_sem();
840 static int vt8623_pci_resume(struct pci_dev* dev)
842 struct fb_info *info = pci_get_drvdata(dev);
843 struct vt8623fb_info *par = info->par;
845 dev_info(&(dev->dev), "resume\n");
847 acquire_console_sem();
848 mutex_lock(&(par->open_lock));
850 if (par->ref_count == 0) {
851 mutex_unlock(&(par->open_lock));
852 release_console_sem();
856 pci_set_power_state(dev, PCI_D0);
857 pci_restore_state(dev);
859 if (pci_enable_device(dev))
864 vt8623fb_set_par(info);
865 fb_set_suspend(info, 0);
867 mutex_unlock(&(par->open_lock));
869 release_console_sem();
874 #define vt8623_pci_suspend NULL
875 #define vt8623_pci_resume NULL
876 #endif /* CONFIG_PM */
878 /* List of boards that we are trying to support */
880 static struct pci_device_id vt8623_devices[] __devinitdata = {
881 {PCI_DEVICE(PCI_VENDOR_ID_VIA, 0x3122)},
882 {0, 0, 0, 0, 0, 0, 0}
885 MODULE_DEVICE_TABLE(pci, vt8623_devices);
887 static struct pci_driver vt8623fb_pci_driver = {
889 .id_table = vt8623_devices,
890 .probe = vt8623_pci_probe,
891 .remove = __devexit_p(vt8623_pci_remove),
892 .suspend = vt8623_pci_suspend,
893 .resume = vt8623_pci_resume,
898 static void __exit vt8623fb_cleanup(void)
900 pr_debug("vt8623fb: cleaning up\n");
901 pci_unregister_driver(&vt8623fb_pci_driver);
904 /* Driver Initialisation */
906 int __init vt8623fb_init(void)
912 if (fb_get_options("vt8623fb", &option))
915 if (option && *option)
919 pr_debug("vt8623fb: initializing\n");
920 return pci_register_driver(&vt8623fb_pci_driver);
923 /* ------------------------------------------------------------------------- */
927 module_init(vt8623fb_init);
928 module_exit(vt8623fb_cleanup);