2 * linux/drivers/video/arkfb.c -- Frame buffer device driver for ARK 2000PV
3 * with ICS 5342 dac (it is easy to add support for different dacs).
5 * Copyright (c) 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
14 #include <linux/version.h>
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>
39 struct vgastate state;
40 struct mutex open_lock;
41 unsigned int ref_count;
42 u32 pseudo_palette[16];
46 /* ------------------------------------------------------------------------- */
49 static const struct svga_fb_format arkfb_formats[] = {
50 { 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
51 FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP4, FB_VISUAL_PSEUDOCOLOR, 8, 8},
52 { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
53 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 16},
54 { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 1,
55 FB_TYPE_INTERLEAVED_PLANES, 1, FB_VISUAL_PSEUDOCOLOR, 8, 16},
56 { 8, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
57 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 8},
58 {16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0,
59 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4},
60 {16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0,
61 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4},
62 {24, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
63 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 8, 8},
64 {32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
65 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 2},
70 /* CRT timing register sets */
72 static const struct vga_regset ark_h_total_regs[] = {{0x00, 0, 7}, {0x41, 7, 7}, VGA_REGSET_END};
73 static const struct vga_regset ark_h_display_regs[] = {{0x01, 0, 7}, {0x41, 6, 6}, VGA_REGSET_END};
74 static const struct vga_regset ark_h_blank_start_regs[] = {{0x02, 0, 7}, {0x41, 5, 5}, VGA_REGSET_END};
75 static const struct vga_regset ark_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7 }, VGA_REGSET_END};
76 static const struct vga_regset ark_h_sync_start_regs[] = {{0x04, 0, 7}, {0x41, 4, 4}, VGA_REGSET_END};
77 static const struct vga_regset ark_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END};
79 static const struct vga_regset ark_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x40, 7, 7}, VGA_REGSET_END};
80 static const struct vga_regset ark_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x40, 6, 6}, VGA_REGSET_END};
81 static const struct vga_regset ark_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x40, 5, 5}, VGA_REGSET_END};
82 // const struct vga_regset ark_v_blank_end_regs[] = {{0x16, 0, 6}, VGA_REGSET_END};
83 static const struct vga_regset ark_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END};
84 static const struct vga_regset ark_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x40, 4, 4}, VGA_REGSET_END};
85 static const struct vga_regset ark_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END};
87 static const struct vga_regset ark_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, VGA_REGSET_END};
88 static const struct vga_regset ark_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x40, 0, 2}, VGA_REGSET_END};
89 static const struct vga_regset ark_offset_regs[] = {{0x13, 0, 7}, {0x41, 3, 3}, VGA_REGSET_END};
91 static const struct svga_timing_regs ark_timing_regs = {
92 ark_h_total_regs, ark_h_display_regs, ark_h_blank_start_regs,
93 ark_h_blank_end_regs, ark_h_sync_start_regs, ark_h_sync_end_regs,
94 ark_v_total_regs, ark_v_display_regs, ark_v_blank_start_regs,
95 ark_v_blank_end_regs, ark_v_sync_start_regs, ark_v_sync_end_regs,
99 /* ------------------------------------------------------------------------- */
102 /* Module parameters */
104 static char *mode = "640x480-8@60";
110 MODULE_AUTHOR("(c) 2007 Ondrej Zajicek <santiago@crfreenet.org>");
111 MODULE_LICENSE("GPL");
112 MODULE_DESCRIPTION("fbdev driver for ARK 2000PV");
114 module_param(mode, charp, 0444);
115 MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc)");
118 module_param(mtrr, int, 0444);
119 MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)");
122 static int threshold = 4;
124 module_param(threshold, int, 0644);
125 MODULE_PARM_DESC(threshold, "FIFO threshold");
128 /* ------------------------------------------------------------------------- */
131 static void arkfb_settile(struct fb_info *info, struct fb_tilemap *map)
133 const u8 *font = map->data;
134 u8 __iomem *fb = (u8 __iomem *)info->screen_base;
137 if ((map->width != 8) || (map->height != 16) ||
138 (map->depth != 1) || (map->length != 256)) {
139 printk(KERN_ERR "fb%d: unsupported font parameters: width %d, "
140 "height %d, depth %d, length %d\n", info->node,
141 map->width, map->height, map->depth, map->length);
146 for (c = 0; c < map->length; c++) {
147 for (i = 0; i < map->height; i++) {
148 fb_writeb(font[i], &fb[i * 4]);
149 fb_writeb(font[i], &fb[i * 4 + (128 * 8)]);
160 static struct fb_tile_ops arkfb_tile_ops = {
161 .fb_settile = arkfb_settile,
162 .fb_tilecopy = svga_tilecopy,
163 .fb_tilefill = svga_tilefill,
164 .fb_tileblit = svga_tileblit,
165 .fb_tilecursor = svga_tilecursor,
166 .fb_get_tilemax = svga_get_tilemax,
170 /* ------------------------------------------------------------------------- */
173 /* image data is MSB-first, fb structure is MSB-first too */
174 static inline u32 expand_color(u32 c)
176 return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF;
179 /* arkfb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */
180 static void arkfb_iplan_imageblit(struct fb_info *info, const struct fb_image *image)
182 u32 fg = expand_color(image->fg_color);
183 u32 bg = expand_color(image->bg_color);
184 const u8 *src1, *src;
191 dst1 = info->screen_base + (image->dy * info->fix.line_length)
192 + ((image->dx / 8) * 4);
194 for (y = 0; y < image->height; y++) {
196 dst = (u32 __iomem *) dst1;
197 for (x = 0; x < image->width; x += 8) {
198 val = *(src++) * 0x01010101;
199 val = (val & fg) | (~val & bg);
200 fb_writel(val, dst++);
202 src1 += image->width / 8;
203 dst1 += info->fix.line_length;
208 /* arkfb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */
209 static void arkfb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
211 u32 fg = expand_color(rect->color);
216 dst1 = info->screen_base + (rect->dy * info->fix.line_length)
217 + ((rect->dx / 8) * 4);
219 for (y = 0; y < rect->height; y++) {
220 dst = (u32 __iomem *) dst1;
221 for (x = 0; x < rect->width; x += 8) {
222 fb_writel(fg, dst++);
224 dst1 += info->fix.line_length;
230 /* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */
231 static inline u32 expand_pixel(u32 c)
233 return (((c & 1) << 24) | ((c & 2) << 27) | ((c & 4) << 14) | ((c & 8) << 17) |
234 ((c & 16) << 4) | ((c & 32) << 7) | ((c & 64) >> 6) | ((c & 128) >> 3)) * 0xF;
237 /* arkfb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */
238 static void arkfb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image)
240 u32 fg = image->fg_color * 0x11111111;
241 u32 bg = image->bg_color * 0x11111111;
242 const u8 *src1, *src;
249 dst1 = info->screen_base + (image->dy * info->fix.line_length)
250 + ((image->dx / 8) * 4);
252 for (y = 0; y < image->height; y++) {
254 dst = (u32 __iomem *) dst1;
255 for (x = 0; x < image->width; x += 8) {
256 val = expand_pixel(*(src++));
257 val = (val & fg) | (~val & bg);
258 fb_writel(val, dst++);
260 src1 += image->width / 8;
261 dst1 += info->fix.line_length;
266 static void arkfb_imageblit(struct fb_info *info, const struct fb_image *image)
268 if ((info->var.bits_per_pixel == 4) && (image->depth == 1)
269 && ((image->width % 8) == 0) && ((image->dx % 8) == 0)) {
270 if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)
271 arkfb_iplan_imageblit(info, image);
273 arkfb_cfb4_imageblit(info, image);
275 cfb_imageblit(info, image);
278 static void arkfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
280 if ((info->var.bits_per_pixel == 4)
281 && ((rect->width % 8) == 0) && ((rect->dx % 8) == 0)
282 && (info->fix.type == FB_TYPE_INTERLEAVED_PLANES))
283 arkfb_iplan_fillrect(info, rect);
285 cfb_fillrect(info, rect);
289 /* ------------------------------------------------------------------------- */
308 int (*dac_get_mode)(struct dac_info *info);
309 int (*dac_set_mode)(struct dac_info *info, int mode);
310 int (*dac_get_freq)(struct dac_info *info, int channel);
311 int (*dac_set_freq)(struct dac_info *info, int channel, u32 freq);
312 void (*dac_release)(struct dac_info *info);
315 typedef void (*dac_read_regs_t)(void *data, u8 *code, int count);
316 typedef void (*dac_write_regs_t)(void *data, u8 *code, int count);
320 struct dac_ops *dacops;
321 dac_read_regs_t dac_read_regs;
322 dac_write_regs_t dac_write_regs;
327 static inline u8 dac_read_reg(struct dac_info *info, u8 reg)
329 u8 code[2] = {reg, 0};
330 info->dac_read_regs(info->data, code, 1);
334 static inline void dac_read_regs(struct dac_info *info, u8 *code, int count)
336 info->dac_read_regs(info->data, code, count);
339 static inline void dac_write_reg(struct dac_info *info, u8 reg, u8 val)
341 u8 code[2] = {reg, val};
342 info->dac_write_regs(info->data, code, 1);
345 static inline void dac_write_regs(struct dac_info *info, u8 *code, int count)
347 info->dac_write_regs(info->data, code, count);
350 static inline int dac_set_mode(struct dac_info *info, int mode)
352 return info->dacops->dac_set_mode(info, mode);
355 static inline int dac_set_freq(struct dac_info *info, int channel, u32 freq)
357 return info->dacops->dac_set_freq(info, channel, freq);
360 static inline void dac_release(struct dac_info *info)
362 info->dacops->dac_release(info);
366 /* ------------------------------------------------------------------------- */
377 #define DAC_PAR(info) ((struct ics5342_info *) info)
379 /* LSB is set to distinguish unused slots */
380 static const u8 ics5342_mode_table[DAC_MAX] = {
381 [DAC_PSEUDO8_8] = 0x01, [DAC_RGB1555_8] = 0x21, [DAC_RGB0565_8] = 0x61,
382 [DAC_RGB0888_8] = 0x41, [DAC_PSEUDO8_16] = 0x11, [DAC_RGB1555_16] = 0x31,
383 [DAC_RGB0565_16] = 0x51, [DAC_RGB0888_16] = 0x91, [DAC_RGB8888_16] = 0x71
386 static int ics5342_set_mode(struct dac_info *info, int mode)
393 code = ics5342_mode_table[mode];
398 dac_write_reg(info, 6, code & 0xF0);
399 DAC_PAR(info)->mode = mode;
404 static const struct svga_pll ics5342_pll = {3, 129, 3, 33, 0, 3,
405 60000, 250000, 14318};
407 /* pd4 - allow only posdivider 4 (r=2) */
408 static const struct svga_pll ics5342_pll_pd4 = {3, 129, 3, 33, 2, 2,
409 60000, 335000, 14318};
411 /* 270 MHz should be upper bound for VCO clock according to specs,
412 but that is too restrictive in pd4 case */
414 static int ics5342_set_freq(struct dac_info *info, int channel, u32 freq)
418 /* only postdivider 4 (r=2) is valid in mode DAC_PSEUDO8_16 */
419 int rv = svga_compute_pll((DAC_PAR(info)->mode == DAC_PSEUDO8_16)
420 ? &ics5342_pll_pd4 : &ics5342_pll,
421 freq, &m, &n, &r, 0);
426 u8 code[6] = {4, 3, 5, m-2, 5, (n-2) | (r << 5)};
427 dac_write_regs(info, code, 3);
432 static void ics5342_release(struct dac_info *info)
434 ics5342_set_mode(info, DAC_PSEUDO8_8);
438 static struct dac_ops ics5342_ops = {
439 .dac_set_mode = ics5342_set_mode,
440 .dac_set_freq = ics5342_set_freq,
441 .dac_release = ics5342_release
445 static struct dac_info * ics5342_init(dac_read_regs_t drr, dac_write_regs_t dwr, void *data)
447 struct dac_info *info = kzalloc(sizeof(struct ics5342_info), GFP_KERNEL);
452 info->dacops = &ics5342_ops;
453 info->dac_read_regs = drr;
454 info->dac_write_regs = dwr;
456 DAC_PAR(info)->mode = DAC_PSEUDO8_8; /* estimation */
461 /* ------------------------------------------------------------------------- */
464 static unsigned short dac_regs[4] = {0x3c8, 0x3c9, 0x3c6, 0x3c7};
466 static void ark_dac_read_regs(void *data, u8 *code, int count)
468 u8 regval = vga_rseq(NULL, 0x1C);
472 vga_wseq(NULL, 0x1C, regval | (code[0] & 4) ? 0x80 : 0);
473 code[1] = vga_r(NULL, dac_regs[code[0] & 3]);
478 vga_wseq(NULL, 0x1C, regval);
481 static void ark_dac_write_regs(void *data, u8 *code, int count)
483 u8 regval = vga_rseq(NULL, 0x1C);
487 vga_wseq(NULL, 0x1C, regval | (code[0] & 4) ? 0x80 : 0);
488 vga_w(NULL, dac_regs[code[0] & 3], code[1]);
493 vga_wseq(NULL, 0x1C, regval);
497 static void ark_set_pixclock(struct fb_info *info, u32 pixclock)
499 struct arkfb_info *par = info->par;
502 int rv = dac_set_freq(par->dac, 0, 1000000000 / pixclock);
504 printk(KERN_ERR "fb%d: cannot set requested pixclock, keeping old value\n", info->node);
508 /* Set VGA misc register */
509 regval = vga_r(NULL, VGA_MIS_R);
510 vga_w(NULL, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD);
514 /* Open framebuffer */
516 static int arkfb_open(struct fb_info *info, int user)
518 struct arkfb_info *par = info->par;
520 mutex_lock(&(par->open_lock));
521 if (par->ref_count == 0) {
522 memset(&(par->state), 0, sizeof(struct vgastate));
523 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP;
524 par->state.num_crtc = 0x60;
525 par->state.num_seq = 0x30;
526 save_vga(&(par->state));
530 mutex_unlock(&(par->open_lock));
535 /* Close framebuffer */
537 static int arkfb_release(struct fb_info *info, int user)
539 struct arkfb_info *par = info->par;
541 mutex_lock(&(par->open_lock));
542 if (par->ref_count == 0) {
543 mutex_unlock(&(par->open_lock));
547 if (par->ref_count == 1) {
548 restore_vga(&(par->state));
549 dac_set_mode(par->dac, DAC_PSEUDO8_8);
553 mutex_unlock(&(par->open_lock));
558 /* Validate passed in var */
560 static int arkfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
564 /* Find appropriate format */
565 rv = svga_match_format (arkfb_formats, var, NULL);
568 printk(KERN_ERR "fb%d: unsupported mode requested\n", info->node);
572 /* Do not allow to have real resoulution larger than virtual */
573 if (var->xres > var->xres_virtual)
574 var->xres_virtual = var->xres;
576 if (var->yres > var->yres_virtual)
577 var->yres_virtual = var->yres;
579 /* Round up xres_virtual to have proper alignment of lines */
580 step = arkfb_formats[rv].xresstep - 1;
581 var->xres_virtual = (var->xres_virtual+step) & ~step;
584 /* Check whether have enough memory */
585 mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual;
586 if (mem > info->screen_size)
588 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));
592 rv = svga_check_timings (&ark_timing_regs, var, info->node);
595 printk(KERN_ERR "fb%d: invalid timings requested\n", info->node);
599 /* Interlaced mode is broken */
600 if (var->vmode & FB_VMODE_INTERLACED)
606 /* Set video mode from par */
608 static int arkfb_set_par(struct fb_info *info)
610 struct arkfb_info *par = info->par;
611 u32 value, mode, hmul, hdiv, offset_value, screen_size;
612 u32 bpp = info->var.bits_per_pixel;
616 info->fix.ypanstep = 1;
617 info->fix.line_length = (info->var.xres_virtual * bpp) / 8;
619 info->flags &= ~FBINFO_MISC_TILEBLITTING;
620 info->tileops = NULL;
622 /* in 4bpp supports 8p wide tiles only, any tiles otherwise */
623 info->pixmap.blit_x = (bpp == 4) ? (1 << (8 - 1)) : (~(u32)0);
624 info->pixmap.blit_y = ~(u32)0;
626 offset_value = (info->var.xres_virtual * bpp) / 64;
627 screen_size = info->var.yres_virtual * info->fix.line_length;
629 info->fix.ypanstep = 16;
630 info->fix.line_length = 0;
632 info->flags |= FBINFO_MISC_TILEBLITTING;
633 info->tileops = &arkfb_tile_ops;
635 /* supports 8x16 tiles only */
636 info->pixmap.blit_x = 1 << (8 - 1);
637 info->pixmap.blit_y = 1 << (16 - 1);
639 offset_value = info->var.xres_virtual / 16;
640 screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64;
643 info->var.xoffset = 0;
644 info->var.yoffset = 0;
645 info->var.activate = FB_ACTIVATE_NOW;
647 /* Unlock registers */
648 svga_wcrt_mask(0x11, 0x00, 0x80);
650 /* Blank screen and turn off sync */
651 svga_wseq_mask(0x01, 0x20, 0x20);
652 svga_wcrt_mask(0x17, 0x00, 0x80);
654 /* Set default values */
655 svga_set_default_gfx_regs();
656 svga_set_default_atc_regs();
657 svga_set_default_seq_regs();
658 svga_set_default_crt_regs();
659 svga_wcrt_multi(ark_line_compare_regs, 0xFFFFFFFF);
660 svga_wcrt_multi(ark_start_address_regs, 0);
662 /* ARK specific initialization */
663 svga_wseq_mask(0x10, 0x1F, 0x1F); /* enable linear framebuffer and full memory access */
664 svga_wseq_mask(0x12, 0x03, 0x03); /* 4 MB linear framebuffer size */
666 vga_wseq(NULL, 0x13, info->fix.smem_start >> 16);
667 vga_wseq(NULL, 0x14, info->fix.smem_start >> 24);
668 vga_wseq(NULL, 0x15, 0);
669 vga_wseq(NULL, 0x16, 0);
671 /* Set the FIFO threshold register */
672 /* It is fascinating way to store 5-bit value in 8-bit register */
673 regval = 0x10 | ((threshold & 0x0E) >> 1) | (threshold & 0x01) << 7 | (threshold & 0x10) << 1;
674 vga_wseq(NULL, 0x18, regval);
676 /* Set the offset register */
677 pr_debug("fb%d: offset register : %d\n", info->node, offset_value);
678 svga_wcrt_multi(ark_offset_regs, offset_value);
680 /* fix for hi-res textmode */
681 svga_wcrt_mask(0x40, 0x08, 0x08);
683 if (info->var.vmode & FB_VMODE_DOUBLE)
684 svga_wcrt_mask(0x09, 0x80, 0x80);
686 svga_wcrt_mask(0x09, 0x00, 0x80);
688 if (info->var.vmode & FB_VMODE_INTERLACED)
689 svga_wcrt_mask(0x44, 0x04, 0x04);
691 svga_wcrt_mask(0x44, 0x00, 0x04);
695 mode = svga_match_format(arkfb_formats, &(info->var), &(info->fix));
697 /* Set mode-specific register values */
700 pr_debug("fb%d: text mode\n", info->node);
701 svga_set_textmode_vga_regs();
703 vga_wseq(NULL, 0x11, 0x10); /* basic VGA mode */
704 svga_wcrt_mask(0x46, 0x00, 0x04); /* 8bit pixel path */
705 dac_set_mode(par->dac, DAC_PSEUDO8_8);
709 pr_debug("fb%d: 4 bit pseudocolor\n", info->node);
710 vga_wgfx(NULL, VGA_GFX_MODE, 0x40);
712 vga_wseq(NULL, 0x11, 0x10); /* basic VGA mode */
713 svga_wcrt_mask(0x46, 0x00, 0x04); /* 8bit pixel path */
714 dac_set_mode(par->dac, DAC_PSEUDO8_8);
717 pr_debug("fb%d: 4 bit pseudocolor, planar\n", info->node);
719 vga_wseq(NULL, 0x11, 0x10); /* basic VGA mode */
720 svga_wcrt_mask(0x46, 0x00, 0x04); /* 8bit pixel path */
721 dac_set_mode(par->dac, DAC_PSEUDO8_8);
724 pr_debug("fb%d: 8 bit pseudocolor\n", info->node);
726 vga_wseq(NULL, 0x11, 0x16); /* 8bpp accel mode */
728 if (info->var.pixclock > 20000) {
729 pr_debug("fb%d: not using multiplex\n", info->node);
730 svga_wcrt_mask(0x46, 0x00, 0x04); /* 8bit pixel path */
731 dac_set_mode(par->dac, DAC_PSEUDO8_8);
733 pr_debug("fb%d: using multiplex\n", info->node);
734 svga_wcrt_mask(0x46, 0x04, 0x04); /* 16bit pixel path */
735 dac_set_mode(par->dac, DAC_PSEUDO8_16);
740 pr_debug("fb%d: 5/5/5 truecolor\n", info->node);
742 vga_wseq(NULL, 0x11, 0x1A); /* 16bpp accel mode */
743 svga_wcrt_mask(0x46, 0x04, 0x04); /* 16bit pixel path */
744 dac_set_mode(par->dac, DAC_RGB1555_16);
747 pr_debug("fb%d: 5/6/5 truecolor\n", info->node);
749 vga_wseq(NULL, 0x11, 0x1A); /* 16bpp accel mode */
750 svga_wcrt_mask(0x46, 0x04, 0x04); /* 16bit pixel path */
751 dac_set_mode(par->dac, DAC_RGB0565_16);
754 pr_debug("fb%d: 8/8/8 truecolor\n", info->node);
756 vga_wseq(NULL, 0x11, 0x16); /* 8bpp accel mode ??? */
757 svga_wcrt_mask(0x46, 0x04, 0x04); /* 16bit pixel path */
758 dac_set_mode(par->dac, DAC_RGB0888_16);
763 pr_debug("fb%d: 8/8/8/8 truecolor\n", info->node);
765 vga_wseq(NULL, 0x11, 0x1E); /* 32bpp accel mode */
766 svga_wcrt_mask(0x46, 0x04, 0x04); /* 16bit pixel path */
767 dac_set_mode(par->dac, DAC_RGB8888_16);
771 printk(KERN_ERR "fb%d: unsupported mode - bug\n", info->node);
775 ark_set_pixclock(info, (hdiv * info->var.pixclock) / hmul);
776 svga_set_timings(&ark_timing_regs, &(info->var), hmul, hdiv,
777 (info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1,
778 (info->var.vmode & FB_VMODE_INTERLACED) ? 2 : 1,
781 /* Set interlaced mode start/end register */
782 value = info->var.xres + info->var.left_margin + info->var.right_margin + info->var.hsync_len;
783 value = ((value * hmul / hdiv) / 8) - 5;
784 vga_wcrt(NULL, 0x42, (value + 1) / 2);
786 memset_io(info->screen_base, 0x00, screen_size);
787 /* Device and screen back on */
788 svga_wcrt_mask(0x17, 0x80, 0x80);
789 svga_wseq_mask(0x01, 0x00, 0x20);
794 /* Set a colour register */
796 static int arkfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
797 u_int transp, struct fb_info *fb)
799 switch (fb->var.bits_per_pixel) {
805 if ((fb->var.bits_per_pixel == 4) &&
806 (fb->var.nonstd == 0)) {
807 outb(0xF0, VGA_PEL_MSK);
808 outb(regno*16, VGA_PEL_IW);
810 outb(0x0F, VGA_PEL_MSK);
811 outb(regno, VGA_PEL_IW);
813 outb(red >> 10, VGA_PEL_D);
814 outb(green >> 10, VGA_PEL_D);
815 outb(blue >> 10, VGA_PEL_D);
821 outb(0xFF, VGA_PEL_MSK);
822 outb(regno, VGA_PEL_IW);
823 outb(red >> 10, VGA_PEL_D);
824 outb(green >> 10, VGA_PEL_D);
825 outb(blue >> 10, VGA_PEL_D);
831 if (fb->var.green.length == 5)
832 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) |
833 ((green & 0xF800) >> 6) | ((blue & 0xF800) >> 11);
834 else if (fb->var.green.length == 6)
835 ((u32*)fb->pseudo_palette)[regno] = (red & 0xF800) |
836 ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11);
845 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xFF00) << 8) |
846 (green & 0xFF00) | ((blue & 0xFF00) >> 8);
855 /* Set the display blanking state */
857 static int arkfb_blank(int blank_mode, struct fb_info *info)
859 switch (blank_mode) {
860 case FB_BLANK_UNBLANK:
861 pr_debug("fb%d: unblank\n", info->node);
862 svga_wseq_mask(0x01, 0x00, 0x20);
863 svga_wcrt_mask(0x17, 0x80, 0x80);
865 case FB_BLANK_NORMAL:
866 pr_debug("fb%d: blank\n", info->node);
867 svga_wseq_mask(0x01, 0x20, 0x20);
868 svga_wcrt_mask(0x17, 0x80, 0x80);
870 case FB_BLANK_POWERDOWN:
871 case FB_BLANK_HSYNC_SUSPEND:
872 case FB_BLANK_VSYNC_SUSPEND:
873 pr_debug("fb%d: sync down\n", info->node);
874 svga_wseq_mask(0x01, 0x20, 0x20);
875 svga_wcrt_mask(0x17, 0x00, 0x80);
882 /* Pan the display */
884 static int arkfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
888 /* Calculate the offset */
889 if (var->bits_per_pixel == 0) {
890 offset = (var->yoffset / 16) * (var->xres_virtual / 2) + (var->xoffset / 2);
891 offset = offset >> 2;
893 offset = (var->yoffset * info->fix.line_length) +
894 (var->xoffset * var->bits_per_pixel / 8);
895 offset = offset >> ((var->bits_per_pixel == 4) ? 2 : 3);
899 svga_wcrt_multi(ark_start_address_regs, offset);
905 /* ------------------------------------------------------------------------- */
908 /* Frame buffer operations */
910 static struct fb_ops arkfb_ops = {
911 .owner = THIS_MODULE,
912 .fb_open = arkfb_open,
913 .fb_release = arkfb_release,
914 .fb_check_var = arkfb_check_var,
915 .fb_set_par = arkfb_set_par,
916 .fb_setcolreg = arkfb_setcolreg,
917 .fb_blank = arkfb_blank,
918 .fb_pan_display = arkfb_pan_display,
919 .fb_fillrect = arkfb_fillrect,
920 .fb_copyarea = cfb_copyarea,
921 .fb_imageblit = arkfb_imageblit,
922 .fb_get_caps = svga_get_caps,
926 /* ------------------------------------------------------------------------- */
930 static int __devinit ark_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
932 struct fb_info *info;
933 struct arkfb_info *par;
937 /* Ignore secondary VGA device because there is no VGA arbitration */
938 if (! svga_primary_device(dev)) {
939 dev_info(&(dev->dev), "ignoring secondary device\n");
943 /* Allocate and fill driver data structure */
944 info = framebuffer_alloc(sizeof(struct arkfb_info), NULL);
946 dev_err(&(dev->dev), "cannot allocate memory\n");
951 mutex_init(&par->open_lock);
953 info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN;
954 info->fbops = &arkfb_ops;
956 /* Prepare PCI device */
957 rc = pci_enable_device(dev);
959 dev_err(&(dev->dev), "cannot enable PCI device\n");
960 goto err_enable_device;
963 rc = pci_request_regions(dev, "arkfb");
965 dev_err(&(dev->dev), "cannot reserve framebuffer region\n");
966 goto err_request_regions;
969 par->dac = ics5342_init(ark_dac_read_regs, ark_dac_write_regs, info);
972 dev_err(&(dev->dev), "RAMDAC initialization failed\n");
976 info->fix.smem_start = pci_resource_start(dev, 0);
977 info->fix.smem_len = pci_resource_len(dev, 0);
979 /* Map physical IO memory address into kernel space */
980 info->screen_base = pci_iomap(dev, 0, 0);
981 if (! info->screen_base) {
983 dev_err(&(dev->dev), "iomap for framebuffer failed\n");
987 /* FIXME get memsize */
988 regval = vga_rseq(NULL, 0x10);
989 info->screen_size = (1 << (regval >> 6)) << 20;
990 info->fix.smem_len = info->screen_size;
992 strcpy(info->fix.id, "ARK 2000PV");
993 info->fix.mmio_start = 0;
994 info->fix.mmio_len = 0;
995 info->fix.type = FB_TYPE_PACKED_PIXELS;
996 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
997 info->fix.ypanstep = 0;
998 info->fix.accel = FB_ACCEL_NONE;
999 info->pseudo_palette = (void*) (par->pseudo_palette);
1001 /* Prepare startup mode */
1002 rc = fb_find_mode(&(info->var), info, mode, NULL, 0, NULL, 8);
1003 if (! ((rc == 1) || (rc == 2))) {
1005 dev_err(&(dev->dev), "mode %s not found\n", mode);
1009 rc = fb_alloc_cmap(&info->cmap, 256, 0);
1011 dev_err(&(dev->dev), "cannot allocate colormap\n");
1012 goto err_alloc_cmap;
1015 rc = register_framebuffer(info);
1017 dev_err(&(dev->dev), "cannot register framebugger\n");
1021 printk(KERN_INFO "fb%d: %s on %s, %d MB RAM\n", info->node, info->fix.id,
1022 pci_name(dev), info->fix.smem_len >> 20);
1024 /* Record a reference to the driver data */
1025 pci_set_drvdata(dev, info);
1030 par->mtrr_reg = mtrr_add(info->fix.smem_start, info->fix.smem_len, MTRR_TYPE_WRCOMB, 1);
1036 /* Error handling */
1038 fb_dealloc_cmap(&info->cmap);
1041 pci_iounmap(dev, info->screen_base);
1043 dac_release(par->dac);
1045 pci_release_regions(dev);
1046 err_request_regions:
1047 /* pci_disable_device(dev); */
1049 framebuffer_release(info);
1055 static void __devexit ark_pci_remove(struct pci_dev *dev)
1057 struct fb_info *info = pci_get_drvdata(dev);
1058 struct arkfb_info *par = info->par;
1062 if (par->mtrr_reg >= 0) {
1063 mtrr_del(par->mtrr_reg, 0, 0);
1068 dac_release(par->dac);
1069 unregister_framebuffer(info);
1070 fb_dealloc_cmap(&info->cmap);
1072 pci_iounmap(dev, info->screen_base);
1073 pci_release_regions(dev);
1074 /* pci_disable_device(dev); */
1076 pci_set_drvdata(dev, NULL);
1077 framebuffer_release(info);
1085 static int ark_pci_suspend (struct pci_dev* dev, pm_message_t state)
1087 struct fb_info *info = pci_get_drvdata(dev);
1088 struct arkfb_info *par = info->par;
1090 dev_info(&(dev->dev), "suspend\n");
1092 acquire_console_sem();
1093 mutex_lock(&(par->open_lock));
1095 if ((state.event == PM_EVENT_FREEZE) || (par->ref_count == 0)) {
1096 mutex_unlock(&(par->open_lock));
1097 release_console_sem();
1101 fb_set_suspend(info, 1);
1103 pci_save_state(dev);
1104 pci_disable_device(dev);
1105 pci_set_power_state(dev, pci_choose_state(dev, state));
1107 mutex_unlock(&(par->open_lock));
1108 release_console_sem();
1116 static int ark_pci_resume (struct pci_dev* dev)
1118 struct fb_info *info = pci_get_drvdata(dev);
1119 struct arkfb_info *par = info->par;
1121 dev_info(&(dev->dev), "resume\n");
1123 acquire_console_sem();
1124 mutex_lock(&(par->open_lock));
1126 if (par->ref_count == 0) {
1127 mutex_unlock(&(par->open_lock));
1128 release_console_sem();
1132 pci_set_power_state(dev, PCI_D0);
1133 pci_restore_state(dev);
1135 if (pci_enable_device(dev))
1138 pci_set_master(dev);
1140 arkfb_set_par(info);
1141 fb_set_suspend(info, 0);
1143 mutex_unlock(&(par->open_lock));
1145 release_console_sem();
1149 #define ark_pci_suspend NULL
1150 #define ark_pci_resume NULL
1151 #endif /* CONFIG_PM */
1153 /* List of boards that we are trying to support */
1155 static struct pci_device_id ark_devices[] __devinitdata = {
1156 {PCI_DEVICE(0xEDD8, 0xA099)},
1157 {0, 0, 0, 0, 0, 0, 0}
1161 MODULE_DEVICE_TABLE(pci, ark_devices);
1163 static struct pci_driver arkfb_pci_driver = {
1165 .id_table = ark_devices,
1166 .probe = ark_pci_probe,
1167 .remove = __devexit_p(ark_pci_remove),
1168 .suspend = ark_pci_suspend,
1169 .resume = ark_pci_resume,
1174 static void __exit arkfb_cleanup(void)
1176 pr_debug("arkfb: cleaning up\n");
1177 pci_unregister_driver(&arkfb_pci_driver);
1180 /* Driver Initialisation */
1182 static int __init arkfb_init(void)
1186 char *option = NULL;
1188 if (fb_get_options("arkfb", &option))
1191 if (option && *option)
1195 pr_debug("arkfb: initializing\n");
1196 return pci_register_driver(&arkfb_pci_driver);
1199 module_init(arkfb_init);
1200 module_exit(arkfb_cleanup);