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/module.h>
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/string.h>
20 #include <linux/tty.h>
21 #include <linux/slab.h>
22 #include <linux/delay.h>
24 #include <linux/svga.h>
25 #include <linux/init.h>
26 #include <linux/pci.h>
27 #include <linux/console.h> /* Why should fb driver call console functions? because acquire_console_sem() */
28 #include <video/vga.h>
34 struct vt8623fb_info
{
35 char __iomem
*mmio_base
;
37 struct vgastate state
;
38 struct mutex open_lock
;
39 unsigned int ref_count
;
40 u32 pseudo_palette
[16];
45 /* ------------------------------------------------------------------------- */
47 static const struct svga_fb_format vt8623fb_formats
[] = {
48 { 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
49 FB_TYPE_TEXT
, FB_AUX_TEXT_SVGA_STEP8
, FB_VISUAL_PSEUDOCOLOR
, 16, 16},
50 { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
51 FB_TYPE_PACKED_PIXELS
, 0, FB_VISUAL_PSEUDOCOLOR
, 16, 16},
52 { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 1,
53 FB_TYPE_INTERLEAVED_PLANES
, 1, FB_VISUAL_PSEUDOCOLOR
, 16, 16},
54 { 8, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
55 FB_TYPE_PACKED_PIXELS
, 0, FB_VISUAL_PSEUDOCOLOR
, 8, 8},
56 /* {16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0,
57 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4}, */
58 {16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0,
59 FB_TYPE_PACKED_PIXELS
, 0, FB_VISUAL_TRUECOLOR
, 4, 4},
60 {32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
61 FB_TYPE_PACKED_PIXELS
, 0, FB_VISUAL_TRUECOLOR
, 2, 2},
65 static const struct svga_pll vt8623_pll
= {2, 127, 2, 7, 0, 3,
66 60000, 300000, 14318};
68 /* CRT timing register sets */
70 static struct vga_regset vt8623_h_total_regs
[] = {{0x00, 0, 7}, {0x36, 3, 3}, VGA_REGSET_END
};
71 static struct vga_regset vt8623_h_display_regs
[] = {{0x01, 0, 7}, VGA_REGSET_END
};
72 static struct vga_regset vt8623_h_blank_start_regs
[] = {{0x02, 0, 7}, VGA_REGSET_END
};
73 static struct vga_regset vt8623_h_blank_end_regs
[] = {{0x03, 0, 4}, {0x05, 7, 7}, {0x33, 5, 5}, VGA_REGSET_END
};
74 static struct vga_regset vt8623_h_sync_start_regs
[] = {{0x04, 0, 7}, {0x33, 4, 4}, VGA_REGSET_END
};
75 static struct vga_regset vt8623_h_sync_end_regs
[] = {{0x05, 0, 4}, VGA_REGSET_END
};
77 static struct vga_regset vt8623_v_total_regs
[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x35, 0, 0}, VGA_REGSET_END
};
78 static struct vga_regset vt8623_v_display_regs
[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x35, 2, 2}, VGA_REGSET_END
};
79 static struct vga_regset vt8623_v_blank_start_regs
[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x35, 3, 3}, VGA_REGSET_END
};
80 static struct vga_regset vt8623_v_blank_end_regs
[] = {{0x16, 0, 7}, VGA_REGSET_END
};
81 static struct vga_regset vt8623_v_sync_start_regs
[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x35, 1, 1}, VGA_REGSET_END
};
82 static struct vga_regset vt8623_v_sync_end_regs
[] = {{0x11, 0, 3}, VGA_REGSET_END
};
84 static struct vga_regset vt8623_offset_regs
[] = {{0x13, 0, 7}, {0x35, 5, 7}, VGA_REGSET_END
};
85 static 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
};
86 static struct vga_regset vt8623_fetch_count_regs
[] = {{0x1C, 0, 7}, {0x1D, 0, 1}, VGA_REGSET_END
};
87 static struct vga_regset vt8623_start_address_regs
[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x34, 0, 7}, {0x48, 0, 1}, VGA_REGSET_END
};
89 static struct svga_timing_regs vt8623_timing_regs
= {
90 vt8623_h_total_regs
, vt8623_h_display_regs
, vt8623_h_blank_start_regs
,
91 vt8623_h_blank_end_regs
, vt8623_h_sync_start_regs
, vt8623_h_sync_end_regs
,
92 vt8623_v_total_regs
, vt8623_v_display_regs
, vt8623_v_blank_start_regs
,
93 vt8623_v_blank_end_regs
, vt8623_v_sync_start_regs
, vt8623_v_sync_end_regs
,
97 /* ------------------------------------------------------------------------- */
100 /* Module parameters */
102 static char *mode_option
= "640x480-8@60";
108 MODULE_AUTHOR("(c) 2006 Ondrej Zajicek <santiago@crfreenet.org>");
109 MODULE_LICENSE("GPL");
110 MODULE_DESCRIPTION("fbdev driver for integrated graphics core in VIA VT8623 [CLE266]");
112 module_param(mode_option
, charp
, 0644);
113 MODULE_PARM_DESC(mode_option
, "Default video mode ('640x480-8@60', etc)");
114 module_param_named(mode
, mode_option
, charp
, 0);
115 MODULE_PARM_DESC(mode
, "Default video mode e.g. '648x480-8@60' (deprecated)");
118 module_param(mtrr
, int, 0444);
119 MODULE_PARM_DESC(mtrr
, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)");
123 /* ------------------------------------------------------------------------- */
126 static struct fb_tile_ops vt8623fb_tile_ops
= {
127 .fb_settile
= svga_settile
,
128 .fb_tilecopy
= svga_tilecopy
,
129 .fb_tilefill
= svga_tilefill
,
130 .fb_tileblit
= svga_tileblit
,
131 .fb_tilecursor
= svga_tilecursor
,
132 .fb_get_tilemax
= svga_get_tilemax
,
136 /* ------------------------------------------------------------------------- */
139 /* image data is MSB-first, fb structure is MSB-first too */
140 static inline u32
expand_color(u32 c
)
142 return ((c
& 1) | ((c
& 2) << 7) | ((c
& 4) << 14) | ((c
& 8) << 21)) * 0xFF;
145 /* vt8623fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */
146 static void vt8623fb_iplan_imageblit(struct fb_info
*info
, const struct fb_image
*image
)
148 u32 fg
= expand_color(image
->fg_color
);
149 u32 bg
= expand_color(image
->bg_color
);
150 const u8
*src1
, *src
;
157 dst1
= info
->screen_base
+ (image
->dy
* info
->fix
.line_length
)
158 + ((image
->dx
/ 8) * 4);
160 for (y
= 0; y
< image
->height
; y
++) {
162 dst
= (u32 __iomem
*) dst1
;
163 for (x
= 0; x
< image
->width
; x
+= 8) {
164 val
= *(src
++) * 0x01010101;
165 val
= (val
& fg
) | (~val
& bg
);
166 fb_writel(val
, dst
++);
168 src1
+= image
->width
/ 8;
169 dst1
+= info
->fix
.line_length
;
173 /* vt8623fb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */
174 static void vt8623fb_iplan_fillrect(struct fb_info
*info
, const struct fb_fillrect
*rect
)
176 u32 fg
= expand_color(rect
->color
);
181 dst1
= info
->screen_base
+ (rect
->dy
* info
->fix
.line_length
)
182 + ((rect
->dx
/ 8) * 4);
184 for (y
= 0; y
< rect
->height
; y
++) {
185 dst
= (u32 __iomem
*) dst1
;
186 for (x
= 0; x
< rect
->width
; x
+= 8) {
187 fb_writel(fg
, dst
++);
189 dst1
+= info
->fix
.line_length
;
194 /* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */
195 static inline u32
expand_pixel(u32 c
)
197 return (((c
& 1) << 24) | ((c
& 2) << 27) | ((c
& 4) << 14) | ((c
& 8) << 17) |
198 ((c
& 16) << 4) | ((c
& 32) << 7) | ((c
& 64) >> 6) | ((c
& 128) >> 3)) * 0xF;
201 /* vt8623fb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */
202 static void vt8623fb_cfb4_imageblit(struct fb_info
*info
, const struct fb_image
*image
)
204 u32 fg
= image
->fg_color
* 0x11111111;
205 u32 bg
= image
->bg_color
* 0x11111111;
206 const u8
*src1
, *src
;
213 dst1
= info
->screen_base
+ (image
->dy
* info
->fix
.line_length
)
214 + ((image
->dx
/ 8) * 4);
216 for (y
= 0; y
< image
->height
; y
++) {
218 dst
= (u32 __iomem
*) dst1
;
219 for (x
= 0; x
< image
->width
; x
+= 8) {
220 val
= expand_pixel(*(src
++));
221 val
= (val
& fg
) | (~val
& bg
);
222 fb_writel(val
, dst
++);
224 src1
+= image
->width
/ 8;
225 dst1
+= info
->fix
.line_length
;
229 static void vt8623fb_imageblit(struct fb_info
*info
, const struct fb_image
*image
)
231 if ((info
->var
.bits_per_pixel
== 4) && (image
->depth
== 1)
232 && ((image
->width
% 8) == 0) && ((image
->dx
% 8) == 0)) {
233 if (info
->fix
.type
== FB_TYPE_INTERLEAVED_PLANES
)
234 vt8623fb_iplan_imageblit(info
, image
);
236 vt8623fb_cfb4_imageblit(info
, image
);
238 cfb_imageblit(info
, image
);
241 static void vt8623fb_fillrect(struct fb_info
*info
, const struct fb_fillrect
*rect
)
243 if ((info
->var
.bits_per_pixel
== 4)
244 && ((rect
->width
% 8) == 0) && ((rect
->dx
% 8) == 0)
245 && (info
->fix
.type
== FB_TYPE_INTERLEAVED_PLANES
))
246 vt8623fb_iplan_fillrect(info
, rect
);
248 cfb_fillrect(info
, rect
);
252 /* ------------------------------------------------------------------------- */
255 static void vt8623_set_pixclock(struct fb_info
*info
, u32 pixclock
)
261 rv
= svga_compute_pll(&vt8623_pll
, 1000000000 / pixclock
, &m
, &n
, &r
, info
->node
);
263 printk(KERN_ERR
"fb%d: cannot set requested pixclock, keeping old value\n", info
->node
);
267 /* Set VGA misc register */
268 regval
= vga_r(NULL
, VGA_MIS_R
);
269 vga_w(NULL
, VGA_MIS_W
, regval
| VGA_MIS_ENB_PLL_LOAD
);
271 /* Set clock registers */
272 vga_wseq(NULL
, 0x46, (n
| (r
<< 6)));
273 vga_wseq(NULL
, 0x47, m
);
278 svga_wseq_mask(0x40, 0x02, 0x02);
279 svga_wseq_mask(0x40, 0x00, 0x02);
283 static int vt8623fb_open(struct fb_info
*info
, int user
)
285 struct vt8623fb_info
*par
= info
->par
;
287 mutex_lock(&(par
->open_lock
));
288 if (par
->ref_count
== 0) {
289 memset(&(par
->state
), 0, sizeof(struct vgastate
));
290 par
->state
.flags
= VGA_SAVE_MODE
| VGA_SAVE_FONTS
| VGA_SAVE_CMAP
;
291 par
->state
.num_crtc
= 0xA2;
292 par
->state
.num_seq
= 0x50;
293 save_vga(&(par
->state
));
297 mutex_unlock(&(par
->open_lock
));
302 static int vt8623fb_release(struct fb_info
*info
, int user
)
304 struct vt8623fb_info
*par
= info
->par
;
306 mutex_lock(&(par
->open_lock
));
307 if (par
->ref_count
== 0) {
308 mutex_unlock(&(par
->open_lock
));
312 if (par
->ref_count
== 1)
313 restore_vga(&(par
->state
));
316 mutex_unlock(&(par
->open_lock
));
321 static int vt8623fb_check_var(struct fb_var_screeninfo
*var
, struct fb_info
*info
)
325 /* Find appropriate format */
326 rv
= svga_match_format (vt8623fb_formats
, var
, NULL
);
329 printk(KERN_ERR
"fb%d: unsupported mode requested\n", info
->node
);
333 /* Do not allow to have real resoulution larger than virtual */
334 if (var
->xres
> var
->xres_virtual
)
335 var
->xres_virtual
= var
->xres
;
337 if (var
->yres
> var
->yres_virtual
)
338 var
->yres_virtual
= var
->yres
;
340 /* Round up xres_virtual to have proper alignment of lines */
341 step
= vt8623fb_formats
[rv
].xresstep
- 1;
342 var
->xres_virtual
= (var
->xres_virtual
+step
) & ~step
;
344 /* Check whether have enough memory */
345 mem
= ((var
->bits_per_pixel
* var
->xres_virtual
) >> 3) * var
->yres_virtual
;
346 if (mem
> info
->screen_size
)
348 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));
352 /* Text mode is limited to 256 kB of memory */
353 if ((var
->bits_per_pixel
== 0) && (mem
> (256*1024)))
355 printk(KERN_ERR
"fb%d: text framebuffer size too large (%d kB requested, 256 kB possible)\n", info
->node
, mem
>> 10);
359 rv
= svga_check_timings (&vt8623_timing_regs
, var
, info
->node
);
362 printk(KERN_ERR
"fb%d: invalid timings requested\n", info
->node
);
366 /* Interlaced mode not supported */
367 if (var
->vmode
& FB_VMODE_INTERLACED
)
374 static int vt8623fb_set_par(struct fb_info
*info
)
376 u32 mode
, offset_value
, fetch_value
, screen_size
;
377 u32 bpp
= info
->var
.bits_per_pixel
;
380 info
->fix
.ypanstep
= 1;
381 info
->fix
.line_length
= (info
->var
.xres_virtual
* bpp
) / 8;
383 info
->flags
&= ~FBINFO_MISC_TILEBLITTING
;
384 info
->tileops
= NULL
;
386 /* in 4bpp supports 8p wide tiles only, any tiles otherwise */
387 info
->pixmap
.blit_x
= (bpp
== 4) ? (1 << (8 - 1)) : (~(u32
)0);
388 info
->pixmap
.blit_y
= ~(u32
)0;
390 offset_value
= (info
->var
.xres_virtual
* bpp
) / 64;
391 fetch_value
= ((info
->var
.xres
* bpp
) / 128) + 4;
394 fetch_value
= (info
->var
.xres
/ 8) + 8; /* + 0 is OK */
396 screen_size
= info
->var
.yres_virtual
* info
->fix
.line_length
;
398 info
->fix
.ypanstep
= 16;
399 info
->fix
.line_length
= 0;
401 info
->flags
|= FBINFO_MISC_TILEBLITTING
;
402 info
->tileops
= &vt8623fb_tile_ops
;
404 /* supports 8x16 tiles only */
405 info
->pixmap
.blit_x
= 1 << (8 - 1);
406 info
->pixmap
.blit_y
= 1 << (16 - 1);
408 offset_value
= info
->var
.xres_virtual
/ 16;
409 fetch_value
= (info
->var
.xres
/ 8) + 8;
410 screen_size
= (info
->var
.xres_virtual
* info
->var
.yres_virtual
) / 64;
413 info
->var
.xoffset
= 0;
414 info
->var
.yoffset
= 0;
415 info
->var
.activate
= FB_ACTIVATE_NOW
;
417 /* Unlock registers */
418 svga_wseq_mask(0x10, 0x01, 0x01);
419 svga_wcrt_mask(0x11, 0x00, 0x80);
420 svga_wcrt_mask(0x47, 0x00, 0x01);
422 /* Device, screen and sync off */
423 svga_wseq_mask(0x01, 0x20, 0x20);
424 svga_wcrt_mask(0x36, 0x30, 0x30);
425 svga_wcrt_mask(0x17, 0x00, 0x80);
427 /* Set default values */
428 svga_set_default_gfx_regs();
429 svga_set_default_atc_regs();
430 svga_set_default_seq_regs();
431 svga_set_default_crt_regs();
432 svga_wcrt_multi(vt8623_line_compare_regs
, 0xFFFFFFFF);
433 svga_wcrt_multi(vt8623_start_address_regs
, 0);
435 svga_wcrt_multi(vt8623_offset_regs
, offset_value
);
436 svga_wseq_multi(vt8623_fetch_count_regs
, fetch_value
);
439 svga_wcrt_mask(0x03, 0x00, 0x60);
440 svga_wcrt_mask(0x05, 0x00, 0x60);
442 if (info
->var
.vmode
& FB_VMODE_DOUBLE
)
443 svga_wcrt_mask(0x09, 0x80, 0x80);
445 svga_wcrt_mask(0x09, 0x00, 0x80);
447 svga_wseq_mask(0x1E, 0xF0, 0xF0); // DI/DVP bus
448 svga_wseq_mask(0x2A, 0x0F, 0x0F); // DI/DVP bus
449 svga_wseq_mask(0x16, 0x08, 0xBF); // FIFO read treshold
450 vga_wseq(NULL
, 0x17, 0x1F); // FIFO depth
451 vga_wseq(NULL
, 0x18, 0x4E);
452 svga_wseq_mask(0x1A, 0x08, 0x08); // enable MMIO ?
454 vga_wcrt(NULL
, 0x32, 0x00);
455 vga_wcrt(NULL
, 0x34, 0x00);
456 vga_wcrt(NULL
, 0x6A, 0x80);
457 vga_wcrt(NULL
, 0x6A, 0xC0);
459 vga_wgfx(NULL
, 0x20, 0x00);
460 vga_wgfx(NULL
, 0x21, 0x00);
461 vga_wgfx(NULL
, 0x22, 0x00);
463 /* Set SR15 according to number of bits per pixel */
464 mode
= svga_match_format(vt8623fb_formats
, &(info
->var
), &(info
->fix
));
467 pr_debug("fb%d: text mode\n", info
->node
);
468 svga_set_textmode_vga_regs();
469 svga_wseq_mask(0x15, 0x00, 0xFE);
470 svga_wcrt_mask(0x11, 0x60, 0x70);
473 pr_debug("fb%d: 4 bit pseudocolor\n", info
->node
);
474 vga_wgfx(NULL
, VGA_GFX_MODE
, 0x40);
475 svga_wseq_mask(0x15, 0x20, 0xFE);
476 svga_wcrt_mask(0x11, 0x00, 0x70);
479 pr_debug("fb%d: 4 bit pseudocolor, planar\n", info
->node
);
480 svga_wseq_mask(0x15, 0x00, 0xFE);
481 svga_wcrt_mask(0x11, 0x00, 0x70);
484 pr_debug("fb%d: 8 bit pseudocolor\n", info
->node
);
485 svga_wseq_mask(0x15, 0x22, 0xFE);
488 pr_debug("fb%d: 5/6/5 truecolor\n", info
->node
);
489 svga_wseq_mask(0x15, 0xB6, 0xFE);
492 pr_debug("fb%d: 8/8/8 truecolor\n", info
->node
);
493 svga_wseq_mask(0x15, 0xAE, 0xFE);
496 printk(KERN_ERR
"vt8623fb: unsupported mode - bug\n");
500 vt8623_set_pixclock(info
, info
->var
.pixclock
);
501 svga_set_timings(&vt8623_timing_regs
, &(info
->var
), 1, 1,
502 (info
->var
.vmode
& FB_VMODE_DOUBLE
) ? 2 : 1, 1,
505 memset_io(info
->screen_base
, 0x00, screen_size
);
507 /* Device and screen back on */
508 svga_wcrt_mask(0x17, 0x80, 0x80);
509 svga_wcrt_mask(0x36, 0x00, 0x30);
510 svga_wseq_mask(0x01, 0x00, 0x20);
516 static int vt8623fb_setcolreg(u_int regno
, u_int red
, u_int green
, u_int blue
,
517 u_int transp
, struct fb_info
*fb
)
519 switch (fb
->var
.bits_per_pixel
) {
525 outb(0x0F, VGA_PEL_MSK
);
526 outb(regno
, VGA_PEL_IW
);
527 outb(red
>> 10, VGA_PEL_D
);
528 outb(green
>> 10, VGA_PEL_D
);
529 outb(blue
>> 10, VGA_PEL_D
);
535 outb(0xFF, VGA_PEL_MSK
);
536 outb(regno
, VGA_PEL_IW
);
537 outb(red
>> 10, VGA_PEL_D
);
538 outb(green
>> 10, VGA_PEL_D
);
539 outb(blue
>> 10, VGA_PEL_D
);
545 if (fb
->var
.green
.length
== 5)
546 ((u32
*)fb
->pseudo_palette
)[regno
] = ((red
& 0xF800) >> 1) |
547 ((green
& 0xF800) >> 6) | ((blue
& 0xF800) >> 11);
548 else if (fb
->var
.green
.length
== 6)
549 ((u32
*)fb
->pseudo_palette
)[regno
] = (red
& 0xF800) |
550 ((green
& 0xFC00) >> 5) | ((blue
& 0xF800) >> 11);
559 /* ((transp & 0xFF00) << 16) */
560 ((u32
*)fb
->pseudo_palette
)[regno
] = ((red
& 0xFF00) << 8) |
561 (green
& 0xFF00) | ((blue
& 0xFF00) >> 8);
571 static int vt8623fb_blank(int blank_mode
, struct fb_info
*info
)
573 switch (blank_mode
) {
574 case FB_BLANK_UNBLANK
:
575 pr_debug("fb%d: unblank\n", info
->node
);
576 svga_wcrt_mask(0x36, 0x00, 0x30);
577 svga_wseq_mask(0x01, 0x00, 0x20);
579 case FB_BLANK_NORMAL
:
580 pr_debug("fb%d: blank\n", info
->node
);
581 svga_wcrt_mask(0x36, 0x00, 0x30);
582 svga_wseq_mask(0x01, 0x20, 0x20);
584 case FB_BLANK_HSYNC_SUSPEND
:
585 pr_debug("fb%d: DPMS standby (hsync off)\n", info
->node
);
586 svga_wcrt_mask(0x36, 0x10, 0x30);
587 svga_wseq_mask(0x01, 0x20, 0x20);
589 case FB_BLANK_VSYNC_SUSPEND
:
590 pr_debug("fb%d: DPMS suspend (vsync off)\n", info
->node
);
591 svga_wcrt_mask(0x36, 0x20, 0x30);
592 svga_wseq_mask(0x01, 0x20, 0x20);
594 case FB_BLANK_POWERDOWN
:
595 pr_debug("fb%d: DPMS off (no sync)\n", info
->node
);
596 svga_wcrt_mask(0x36, 0x30, 0x30);
597 svga_wseq_mask(0x01, 0x20, 0x20);
605 static int vt8623fb_pan_display(struct fb_var_screeninfo
*var
, struct fb_info
*info
)
609 /* Calculate the offset */
610 if (var
->bits_per_pixel
== 0) {
611 offset
= (var
->yoffset
/ 16) * var
->xres_virtual
+ var
->xoffset
;
612 offset
= offset
>> 3;
614 offset
= (var
->yoffset
* info
->fix
.line_length
) +
615 (var
->xoffset
* var
->bits_per_pixel
/ 8);
616 offset
= offset
>> ((var
->bits_per_pixel
== 4) ? 2 : 1);
620 svga_wcrt_multi(vt8623_start_address_regs
, offset
);
626 /* ------------------------------------------------------------------------- */
629 /* Frame buffer operations */
631 static struct fb_ops vt8623fb_ops
= {
632 .owner
= THIS_MODULE
,
633 .fb_open
= vt8623fb_open
,
634 .fb_release
= vt8623fb_release
,
635 .fb_check_var
= vt8623fb_check_var
,
636 .fb_set_par
= vt8623fb_set_par
,
637 .fb_setcolreg
= vt8623fb_setcolreg
,
638 .fb_blank
= vt8623fb_blank
,
639 .fb_pan_display
= vt8623fb_pan_display
,
640 .fb_fillrect
= vt8623fb_fillrect
,
641 .fb_copyarea
= cfb_copyarea
,
642 .fb_imageblit
= vt8623fb_imageblit
,
643 .fb_get_caps
= svga_get_caps
,
649 static int __devinit
vt8623_pci_probe(struct pci_dev
*dev
, const struct pci_device_id
*id
)
651 struct fb_info
*info
;
652 struct vt8623fb_info
*par
;
653 unsigned int memsize1
, memsize2
;
656 /* Ignore secondary VGA device because there is no VGA arbitration */
657 if (! svga_primary_device(dev
)) {
658 dev_info(&(dev
->dev
), "ignoring secondary device\n");
662 /* Allocate and fill driver data structure */
663 info
= framebuffer_alloc(sizeof(struct vt8623fb_info
), &(dev
->dev
));
665 dev_err(&(dev
->dev
), "cannot allocate memory\n");
670 mutex_init(&par
->open_lock
);
672 info
->flags
= FBINFO_PARTIAL_PAN_OK
| FBINFO_HWACCEL_YPAN
;
673 info
->fbops
= &vt8623fb_ops
;
675 /* Prepare PCI device */
677 rc
= pci_enable_device(dev
);
679 dev_err(info
->device
, "cannot enable PCI device\n");
680 goto err_enable_device
;
683 rc
= pci_request_regions(dev
, "vt8623fb");
685 dev_err(info
->device
, "cannot reserve framebuffer region\n");
686 goto err_request_regions
;
689 info
->fix
.smem_start
= pci_resource_start(dev
, 0);
690 info
->fix
.smem_len
= pci_resource_len(dev
, 0);
691 info
->fix
.mmio_start
= pci_resource_start(dev
, 1);
692 info
->fix
.mmio_len
= pci_resource_len(dev
, 1);
694 /* Map physical IO memory address into kernel space */
695 info
->screen_base
= pci_iomap(dev
, 0, 0);
696 if (! info
->screen_base
) {
698 dev_err(info
->device
, "iomap for framebuffer failed\n");
702 par
->mmio_base
= pci_iomap(dev
, 1, 0);
703 if (! par
->mmio_base
) {
705 dev_err(info
->device
, "iomap for MMIO failed\n");
709 /* Find how many physical memory there is on card */
710 memsize1
= (vga_rseq(NULL
, 0x34) + 1) >> 1;
711 memsize2
= vga_rseq(NULL
, 0x39) << 2;
713 if ((16 <= memsize1
) && (memsize1
<= 64) && (memsize1
== memsize2
))
714 info
->screen_size
= memsize1
<< 20;
716 dev_err(info
->device
, "memory size detection failed (%x %x), suppose 16 MB\n", memsize1
, memsize2
);
717 info
->screen_size
= 16 << 20;
720 info
->fix
.smem_len
= info
->screen_size
;
721 strcpy(info
->fix
.id
, "VIA VT8623");
722 info
->fix
.type
= FB_TYPE_PACKED_PIXELS
;
723 info
->fix
.visual
= FB_VISUAL_PSEUDOCOLOR
;
724 info
->fix
.ypanstep
= 0;
725 info
->fix
.accel
= FB_ACCEL_NONE
;
726 info
->pseudo_palette
= (void*)par
->pseudo_palette
;
728 /* Prepare startup mode */
730 rc
= fb_find_mode(&(info
->var
), info
, mode_option
, NULL
, 0, NULL
, 8);
731 if (! ((rc
== 1) || (rc
== 2))) {
733 dev_err(info
->device
, "mode %s not found\n", mode_option
);
737 rc
= fb_alloc_cmap(&info
->cmap
, 256, 0);
739 dev_err(info
->device
, "cannot allocate colormap\n");
743 rc
= register_framebuffer(info
);
745 dev_err(info
->device
, "cannot register framebugger\n");
749 printk(KERN_INFO
"fb%d: %s on %s, %d MB RAM\n", info
->node
, info
->fix
.id
,
750 pci_name(dev
), info
->fix
.smem_len
>> 20);
752 /* Record a reference to the driver data */
753 pci_set_drvdata(dev
, info
);
758 par
->mtrr_reg
= mtrr_add(info
->fix
.smem_start
, info
->fix
.smem_len
, MTRR_TYPE_WRCOMB
, 1);
766 fb_dealloc_cmap(&info
->cmap
);
769 pci_iounmap(dev
, par
->mmio_base
);
771 pci_iounmap(dev
, info
->screen_base
);
773 pci_release_regions(dev
);
775 /* pci_disable_device(dev); */
777 framebuffer_release(info
);
783 static void __devexit
vt8623_pci_remove(struct pci_dev
*dev
)
785 struct fb_info
*info
= pci_get_drvdata(dev
);
788 struct vt8623fb_info
*par
= info
->par
;
791 if (par
->mtrr_reg
>= 0) {
792 mtrr_del(par
->mtrr_reg
, 0, 0);
797 unregister_framebuffer(info
);
798 fb_dealloc_cmap(&info
->cmap
);
800 pci_iounmap(dev
, info
->screen_base
);
801 pci_iounmap(dev
, par
->mmio_base
);
802 pci_release_regions(dev
);
803 /* pci_disable_device(dev); */
805 pci_set_drvdata(dev
, NULL
);
806 framebuffer_release(info
);
814 static int vt8623_pci_suspend(struct pci_dev
* dev
, pm_message_t state
)
816 struct fb_info
*info
= pci_get_drvdata(dev
);
817 struct vt8623fb_info
*par
= info
->par
;
819 dev_info(info
->device
, "suspend\n");
821 acquire_console_sem();
822 mutex_lock(&(par
->open_lock
));
824 if ((state
.event
== PM_EVENT_FREEZE
) || (par
->ref_count
== 0)) {
825 mutex_unlock(&(par
->open_lock
));
826 release_console_sem();
830 fb_set_suspend(info
, 1);
833 pci_disable_device(dev
);
834 pci_set_power_state(dev
, pci_choose_state(dev
, state
));
836 mutex_unlock(&(par
->open_lock
));
837 release_console_sem();
845 static int vt8623_pci_resume(struct pci_dev
* dev
)
847 struct fb_info
*info
= pci_get_drvdata(dev
);
848 struct vt8623fb_info
*par
= info
->par
;
850 dev_info(info
->device
, "resume\n");
852 acquire_console_sem();
853 mutex_lock(&(par
->open_lock
));
855 if (par
->ref_count
== 0)
858 pci_set_power_state(dev
, PCI_D0
);
859 pci_restore_state(dev
);
861 if (pci_enable_device(dev
))
866 vt8623fb_set_par(info
);
867 fb_set_suspend(info
, 0);
870 mutex_unlock(&(par
->open_lock
));
871 release_console_sem();
876 #define vt8623_pci_suspend NULL
877 #define vt8623_pci_resume NULL
878 #endif /* CONFIG_PM */
880 /* List of boards that we are trying to support */
882 static struct pci_device_id vt8623_devices
[] __devinitdata
= {
883 {PCI_DEVICE(PCI_VENDOR_ID_VIA
, 0x3122)},
884 {0, 0, 0, 0, 0, 0, 0}
887 MODULE_DEVICE_TABLE(pci
, vt8623_devices
);
889 static struct pci_driver vt8623fb_pci_driver
= {
891 .id_table
= vt8623_devices
,
892 .probe
= vt8623_pci_probe
,
893 .remove
= __devexit_p(vt8623_pci_remove
),
894 .suspend
= vt8623_pci_suspend
,
895 .resume
= vt8623_pci_resume
,
900 static void __exit
vt8623fb_cleanup(void)
902 pr_debug("vt8623fb: cleaning up\n");
903 pci_unregister_driver(&vt8623fb_pci_driver
);
906 /* Driver Initialisation */
908 static int __init
vt8623fb_init(void)
914 if (fb_get_options("vt8623fb", &option
))
917 if (option
&& *option
)
918 mode_option
= option
;
921 pr_debug("vt8623fb: initializing\n");
922 return pci_register_driver(&vt8623fb_pci_driver
);
925 /* ------------------------------------------------------------------------- */
929 module_init(vt8623fb_init
);
930 module_exit(vt8623fb_cleanup
);