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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1da177e4 LT |
2 | /* |
3 | * linux/drivers/video/acornfb.c | |
4 | * | |
5 | * Copyright (C) 1998-2001 Russell King | |
6 | * | |
1da177e4 LT |
7 | * Frame buffer code for Acorn platforms |
8 | * | |
9 | * NOTE: Most of the modes with X!=640 will disappear shortly. | |
10 | * NOTE: Startup setting of HS & VS polarity not supported. | |
11 | * (do we need to support it if we're coming up in 640x480?) | |
12 | * | |
13 | * FIXME: (things broken by the "new improved" FBCON API) | |
14 | * - Blanking 8bpp displays with VIDC | |
15 | */ | |
16 | ||
1da177e4 LT |
17 | #include <linux/module.h> |
18 | #include <linux/kernel.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/string.h> | |
21 | #include <linux/ctype.h> | |
27ac792c | 22 | #include <linux/mm.h> |
1da177e4 LT |
23 | #include <linux/init.h> |
24 | #include <linux/fb.h> | |
d052d1be | 25 | #include <linux/platform_device.h> |
1da177e4 | 26 | #include <linux/dma-mapping.h> |
99730225 | 27 | #include <linux/io.h> |
5a0e3ad6 | 28 | #include <linux/gfp.h> |
1da177e4 | 29 | |
a09e64fb | 30 | #include <mach/hardware.h> |
1da177e4 LT |
31 | #include <asm/irq.h> |
32 | #include <asm/mach-types.h> | |
33 | #include <asm/pgtable.h> | |
34 | ||
35 | #include "acornfb.h" | |
36 | ||
1da177e4 LT |
37 | /* |
38 | * Default resolution. | |
39 | * NOTE that it has to be supported in the table towards | |
40 | * the end of this file. | |
41 | */ | |
42 | #define DEFAULT_XRES 640 | |
43 | #define DEFAULT_YRES 480 | |
44 | #define DEFAULT_BPP 4 | |
45 | ||
46 | /* | |
47 | * define this to debug the video mode selection | |
48 | */ | |
49 | #undef DEBUG_MODE_SELECTION | |
50 | ||
51 | /* | |
52 | * Translation from RISC OS monitor types to actual | |
53 | * HSYNC and VSYNC frequency ranges. These are | |
54 | * probably not right, but they're the best info I | |
55 | * have. Allow 1% either way on the nominal for TVs. | |
56 | */ | |
57 | #define NR_MONTYPES 6 | |
48c68c4f | 58 | static struct fb_monspecs monspecs[NR_MONTYPES] = { |
1da177e4 LT |
59 | { /* TV */ |
60 | .hfmin = 15469, | |
61 | .hfmax = 15781, | |
62 | .vfmin = 49, | |
63 | .vfmax = 51, | |
64 | }, { /* Multi Freq */ | |
65 | .hfmin = 0, | |
66 | .hfmax = 99999, | |
67 | .vfmin = 0, | |
68 | .vfmax = 199, | |
69 | }, { /* Hi-res mono */ | |
70 | .hfmin = 58608, | |
71 | .hfmax = 58608, | |
72 | .vfmin = 64, | |
73 | .vfmax = 64, | |
74 | }, { /* VGA */ | |
75 | .hfmin = 30000, | |
76 | .hfmax = 70000, | |
77 | .vfmin = 60, | |
78 | .vfmax = 60, | |
79 | }, { /* SVGA */ | |
80 | .hfmin = 30000, | |
81 | .hfmax = 70000, | |
82 | .vfmin = 56, | |
83 | .vfmax = 75, | |
84 | }, { | |
85 | .hfmin = 30000, | |
86 | .hfmax = 70000, | |
87 | .vfmin = 60, | |
88 | .vfmax = 60, | |
89 | } | |
90 | }; | |
91 | ||
92 | static struct fb_info fb_info; | |
93 | static struct acornfb_par current_par; | |
94 | static struct vidc_timing current_vidc; | |
95 | ||
96 | extern unsigned int vram_size; /* set by setup.c */ | |
97 | ||
1da177e4 | 98 | #ifdef HAS_VIDC20 |
a09e64fb | 99 | #include <mach/acornfb.h> |
1da177e4 | 100 | |
0cb51f65 | 101 | #define MAX_SIZE (2*1024*1024) |
1da177e4 LT |
102 | |
103 | /* VIDC20 has a different set of rules from the VIDC: | |
104 | * hcr : must be multiple of 4 | |
105 | * hswr : must be even | |
106 | * hdsr : must be even | |
107 | * hder : must be even | |
108 | * vcr : >= 2, (interlace, must be odd) | |
109 | * vswr : >= 1 | |
110 | * vdsr : >= 1 | |
111 | * vder : >= vdsr | |
112 | */ | |
113 | static void acornfb_set_timing(struct fb_info *info) | |
114 | { | |
115 | struct fb_var_screeninfo *var = &info->var; | |
116 | struct vidc_timing vidc; | |
117 | u_int vcr, fsize; | |
118 | u_int ext_ctl, dat_ctl; | |
119 | u_int words_per_line; | |
120 | ||
121 | memset(&vidc, 0, sizeof(vidc)); | |
122 | ||
123 | vidc.h_sync_width = var->hsync_len - 8; | |
124 | vidc.h_border_start = vidc.h_sync_width + var->left_margin + 8 - 12; | |
125 | vidc.h_display_start = vidc.h_border_start + 12 - 18; | |
126 | vidc.h_display_end = vidc.h_display_start + var->xres; | |
127 | vidc.h_border_end = vidc.h_display_end + 18 - 12; | |
128 | vidc.h_cycle = vidc.h_border_end + var->right_margin + 12 - 8; | |
129 | vidc.h_interlace = vidc.h_cycle / 2; | |
130 | vidc.v_sync_width = var->vsync_len - 1; | |
131 | vidc.v_border_start = vidc.v_sync_width + var->upper_margin; | |
132 | vidc.v_display_start = vidc.v_border_start; | |
133 | vidc.v_display_end = vidc.v_display_start + var->yres; | |
134 | vidc.v_border_end = vidc.v_display_end; | |
135 | vidc.control = acornfb_default_control(); | |
136 | ||
137 | vcr = var->vsync_len + var->upper_margin + var->yres + | |
138 | var->lower_margin; | |
139 | ||
140 | if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) { | |
141 | vidc.v_cycle = (vcr - 3) / 2; | |
142 | vidc.control |= VIDC20_CTRL_INT; | |
143 | } else | |
144 | vidc.v_cycle = vcr - 2; | |
145 | ||
146 | switch (var->bits_per_pixel) { | |
147 | case 1: vidc.control |= VIDC20_CTRL_1BPP; break; | |
148 | case 2: vidc.control |= VIDC20_CTRL_2BPP; break; | |
149 | case 4: vidc.control |= VIDC20_CTRL_4BPP; break; | |
150 | default: | |
151 | case 8: vidc.control |= VIDC20_CTRL_8BPP; break; | |
152 | case 16: vidc.control |= VIDC20_CTRL_16BPP; break; | |
153 | case 32: vidc.control |= VIDC20_CTRL_32BPP; break; | |
154 | } | |
155 | ||
156 | acornfb_vidc20_find_rates(&vidc, var); | |
157 | fsize = var->vsync_len + var->upper_margin + var->lower_margin - 1; | |
158 | ||
159 | if (memcmp(¤t_vidc, &vidc, sizeof(vidc))) { | |
160 | current_vidc = vidc; | |
161 | ||
0cb51f65 | 162 | vidc_writel(VIDC20_CTRL | vidc.control); |
1da177e4 LT |
163 | vidc_writel(0xd0000000 | vidc.pll_ctl); |
164 | vidc_writel(0x80000000 | vidc.h_cycle); | |
165 | vidc_writel(0x81000000 | vidc.h_sync_width); | |
166 | vidc_writel(0x82000000 | vidc.h_border_start); | |
167 | vidc_writel(0x83000000 | vidc.h_display_start); | |
168 | vidc_writel(0x84000000 | vidc.h_display_end); | |
169 | vidc_writel(0x85000000 | vidc.h_border_end); | |
170 | vidc_writel(0x86000000); | |
171 | vidc_writel(0x87000000 | vidc.h_interlace); | |
172 | vidc_writel(0x90000000 | vidc.v_cycle); | |
173 | vidc_writel(0x91000000 | vidc.v_sync_width); | |
174 | vidc_writel(0x92000000 | vidc.v_border_start); | |
175 | vidc_writel(0x93000000 | vidc.v_display_start); | |
176 | vidc_writel(0x94000000 | vidc.v_display_end); | |
177 | vidc_writel(0x95000000 | vidc.v_border_end); | |
178 | vidc_writel(0x96000000); | |
179 | vidc_writel(0x97000000); | |
180 | } | |
181 | ||
182 | iomd_writel(fsize, IOMD_FSIZE); | |
183 | ||
184 | ext_ctl = acornfb_default_econtrol(); | |
185 | ||
186 | if (var->sync & FB_SYNC_COMP_HIGH_ACT) /* should be FB_SYNC_COMP */ | |
187 | ext_ctl |= VIDC20_ECTL_HS_NCSYNC | VIDC20_ECTL_VS_NCSYNC; | |
188 | else { | |
189 | if (var->sync & FB_SYNC_HOR_HIGH_ACT) | |
190 | ext_ctl |= VIDC20_ECTL_HS_HSYNC; | |
191 | else | |
192 | ext_ctl |= VIDC20_ECTL_HS_NHSYNC; | |
193 | ||
194 | if (var->sync & FB_SYNC_VERT_HIGH_ACT) | |
195 | ext_ctl |= VIDC20_ECTL_VS_VSYNC; | |
196 | else | |
197 | ext_ctl |= VIDC20_ECTL_VS_NVSYNC; | |
198 | } | |
199 | ||
200 | vidc_writel(VIDC20_ECTL | ext_ctl); | |
201 | ||
202 | words_per_line = var->xres * var->bits_per_pixel / 32; | |
203 | ||
204 | if (current_par.using_vram && info->fix.smem_len == 2048*1024) | |
205 | words_per_line /= 2; | |
206 | ||
207 | /* RiscPC doesn't use the VIDC's VRAM control. */ | |
208 | dat_ctl = VIDC20_DCTL_VRAM_DIS | VIDC20_DCTL_SNA | words_per_line; | |
209 | ||
210 | /* The data bus width is dependent on both the type | |
211 | * and amount of video memory. | |
212 | * DRAM 32bit low | |
213 | * 1MB VRAM 32bit | |
214 | * 2MB VRAM 64bit | |
215 | */ | |
216 | if (current_par.using_vram && current_par.vram_half_sam == 2048) | |
217 | dat_ctl |= VIDC20_DCTL_BUS_D63_0; | |
218 | else | |
219 | dat_ctl |= VIDC20_DCTL_BUS_D31_0; | |
220 | ||
221 | vidc_writel(VIDC20_DCTL | dat_ctl); | |
222 | ||
223 | #ifdef DEBUG_MODE_SELECTION | |
224 | printk(KERN_DEBUG "VIDC registers for %dx%dx%d:\n", var->xres, | |
225 | var->yres, var->bits_per_pixel); | |
226 | printk(KERN_DEBUG " H-cycle : %d\n", vidc.h_cycle); | |
227 | printk(KERN_DEBUG " H-sync-width : %d\n", vidc.h_sync_width); | |
228 | printk(KERN_DEBUG " H-border-start : %d\n", vidc.h_border_start); | |
229 | printk(KERN_DEBUG " H-display-start : %d\n", vidc.h_display_start); | |
230 | printk(KERN_DEBUG " H-display-end : %d\n", vidc.h_display_end); | |
231 | printk(KERN_DEBUG " H-border-end : %d\n", vidc.h_border_end); | |
232 | printk(KERN_DEBUG " H-interlace : %d\n", vidc.h_interlace); | |
233 | printk(KERN_DEBUG " V-cycle : %d\n", vidc.v_cycle); | |
234 | printk(KERN_DEBUG " V-sync-width : %d\n", vidc.v_sync_width); | |
235 | printk(KERN_DEBUG " V-border-start : %d\n", vidc.v_border_start); | |
236 | printk(KERN_DEBUG " V-display-start : %d\n", vidc.v_display_start); | |
237 | printk(KERN_DEBUG " V-display-end : %d\n", vidc.v_display_end); | |
238 | printk(KERN_DEBUG " V-border-end : %d\n", vidc.v_border_end); | |
239 | printk(KERN_DEBUG " Ext Ctrl (C) : 0x%08X\n", ext_ctl); | |
240 | printk(KERN_DEBUG " PLL Ctrl (D) : 0x%08X\n", vidc.pll_ctl); | |
241 | printk(KERN_DEBUG " Ctrl (E) : 0x%08X\n", vidc.control); | |
242 | printk(KERN_DEBUG " Data Ctrl (F) : 0x%08X\n", dat_ctl); | |
243 | printk(KERN_DEBUG " Fsize : 0x%08X\n", fsize); | |
244 | #endif | |
245 | } | |
246 | ||
247 | /* | |
248 | * We have to take note of the VIDC20's 16-bit palette here. | |
249 | * The VIDC20 looks up a 16 bit pixel as follows: | |
250 | * | |
251 | * bits 111111 | |
252 | * 5432109876543210 | |
253 | * red ++++++++ (8 bits, 7 to 0) | |
254 | * green ++++++++ (8 bits, 11 to 4) | |
255 | * blue ++++++++ (8 bits, 15 to 8) | |
256 | * | |
257 | * We use a pixel which looks like: | |
258 | * | |
259 | * bits 111111 | |
260 | * 5432109876543210 | |
261 | * red +++++ (5 bits, 4 to 0) | |
262 | * green +++++ (5 bits, 9 to 5) | |
263 | * blue +++++ (5 bits, 14 to 10) | |
264 | */ | |
265 | static int | |
266 | acornfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, | |
267 | u_int trans, struct fb_info *info) | |
268 | { | |
269 | union palette pal; | |
270 | ||
271 | if (regno >= current_par.palette_size) | |
272 | return 1; | |
273 | ||
274 | if (regno < 16 && info->fix.visual == FB_VISUAL_DIRECTCOLOR) { | |
275 | u32 pseudo_val; | |
276 | ||
277 | pseudo_val = regno << info->var.red.offset; | |
278 | pseudo_val |= regno << info->var.green.offset; | |
279 | pseudo_val |= regno << info->var.blue.offset; | |
280 | ||
281 | ((u32 *)info->pseudo_palette)[regno] = pseudo_val; | |
282 | } | |
283 | ||
284 | pal.p = 0; | |
285 | pal.vidc20.red = red >> 8; | |
286 | pal.vidc20.green = green >> 8; | |
287 | pal.vidc20.blue = blue >> 8; | |
288 | ||
289 | current_par.palette[regno] = pal; | |
290 | ||
291 | if (info->var.bits_per_pixel == 16) { | |
292 | int i; | |
293 | ||
294 | pal.p = 0; | |
295 | vidc_writel(0x10000000); | |
296 | for (i = 0; i < 256; i += 1) { | |
0cb51f65 | 297 | pal.vidc20.red = current_par.palette[i & 31].vidc20.red; |
1da177e4 LT |
298 | pal.vidc20.green = current_par.palette[(i >> 1) & 31].vidc20.green; |
299 | pal.vidc20.blue = current_par.palette[(i >> 2) & 31].vidc20.blue; | |
300 | vidc_writel(pal.p); | |
301 | /* Palette register pointer auto-increments */ | |
302 | } | |
303 | } else { | |
304 | vidc_writel(0x10000000 | regno); | |
305 | vidc_writel(pal.p); | |
306 | } | |
307 | ||
308 | return 0; | |
309 | } | |
310 | #endif | |
311 | ||
312 | /* | |
313 | * Before selecting the timing parameters, adjust | |
314 | * the resolution to fit the rules. | |
315 | */ | |
316 | static int | |
317 | acornfb_adjust_timing(struct fb_info *info, struct fb_var_screeninfo *var, u_int fontht) | |
318 | { | |
319 | u_int font_line_len, sam_size, min_size, size, nr_y; | |
320 | ||
321 | /* xres must be even */ | |
322 | var->xres = (var->xres + 1) & ~1; | |
323 | ||
324 | /* | |
325 | * We don't allow xres_virtual to differ from xres | |
326 | */ | |
327 | var->xres_virtual = var->xres; | |
328 | var->xoffset = 0; | |
329 | ||
330 | if (current_par.using_vram) | |
331 | sam_size = current_par.vram_half_sam * 2; | |
332 | else | |
333 | sam_size = 16; | |
334 | ||
335 | /* | |
336 | * Now, find a value for yres_virtual which allows | |
337 | * us to do ywrap scrolling. The value of | |
338 | * yres_virtual must be such that the end of the | |
339 | * displayable frame buffer must be aligned with | |
340 | * the start of a font line. | |
341 | */ | |
342 | font_line_len = var->xres * var->bits_per_pixel * fontht / 8; | |
343 | min_size = var->xres * var->yres * var->bits_per_pixel / 8; | |
344 | ||
345 | /* | |
346 | * If minimum screen size is greater than that we have | |
347 | * available, reject it. | |
348 | */ | |
349 | if (min_size > info->fix.smem_len) | |
350 | return -EINVAL; | |
351 | ||
352 | /* Find int 'y', such that y * fll == s * sam < maxsize | |
353 | * y = s * sam / fll; s = maxsize / sam | |
354 | */ | |
355 | for (size = info->fix.smem_len; | |
356 | nr_y = size / font_line_len, min_size <= size; | |
357 | size -= sam_size) { | |
358 | if (nr_y * font_line_len == size) | |
359 | break; | |
360 | } | |
361 | nr_y *= fontht; | |
362 | ||
363 | if (var->accel_flags & FB_ACCELF_TEXT) { | |
364 | if (min_size > size) { | |
365 | /* | |
366 | * failed, use ypan | |
367 | */ | |
368 | size = info->fix.smem_len; | |
369 | var->yres_virtual = size / (font_line_len / fontht); | |
370 | } else | |
371 | var->yres_virtual = nr_y; | |
372 | } else if (var->yres_virtual > nr_y) | |
373 | var->yres_virtual = nr_y; | |
374 | ||
375 | current_par.screen_end = info->fix.smem_start + size; | |
376 | ||
377 | /* | |
378 | * Fix yres & yoffset if needed. | |
379 | */ | |
380 | if (var->yres > var->yres_virtual) | |
381 | var->yres = var->yres_virtual; | |
382 | ||
383 | if (var->vmode & FB_VMODE_YWRAP) { | |
384 | if (var->yoffset > var->yres_virtual) | |
385 | var->yoffset = var->yres_virtual; | |
386 | } else { | |
387 | if (var->yoffset + var->yres > var->yres_virtual) | |
388 | var->yoffset = var->yres_virtual - var->yres; | |
389 | } | |
390 | ||
391 | /* hsync_len must be even */ | |
392 | var->hsync_len = (var->hsync_len + 1) & ~1; | |
393 | ||
ffd29195 | 394 | #if defined(HAS_VIDC20) |
1da177e4 LT |
395 | /* left_margin must be even */ |
396 | if (var->left_margin & 1) { | |
397 | var->left_margin += 1; | |
398 | var->right_margin -= 1; | |
399 | } | |
400 | ||
401 | /* right_margin must be even */ | |
402 | if (var->right_margin & 1) | |
403 | var->right_margin += 1; | |
404 | #endif | |
405 | ||
406 | if (var->vsync_len < 1) | |
407 | var->vsync_len = 1; | |
408 | ||
409 | return 0; | |
410 | } | |
411 | ||
412 | static int | |
413 | acornfb_validate_timing(struct fb_var_screeninfo *var, | |
414 | struct fb_monspecs *monspecs) | |
415 | { | |
416 | unsigned long hs, vs; | |
417 | ||
418 | /* | |
419 | * hs(Hz) = 10^12 / (pixclock * xtotal) | |
420 | * vs(Hz) = hs(Hz) / ytotal | |
421 | * | |
422 | * No need to do long long divisions or anything | |
423 | * like that if you factor it correctly | |
424 | */ | |
425 | hs = 1953125000 / var->pixclock; | |
426 | hs = hs * 512 / | |
427 | (var->xres + var->left_margin + var->right_margin + var->hsync_len); | |
428 | vs = hs / | |
429 | (var->yres + var->upper_margin + var->lower_margin + var->vsync_len); | |
430 | ||
431 | return (vs >= monspecs->vfmin && vs <= monspecs->vfmax && | |
432 | hs >= monspecs->hfmin && hs <= monspecs->hfmax) ? 0 : -EINVAL; | |
433 | } | |
434 | ||
435 | static inline void | |
436 | acornfb_update_dma(struct fb_info *info, struct fb_var_screeninfo *var) | |
437 | { | |
438 | u_int off = var->yoffset * info->fix.line_length; | |
439 | ||
440 | #if defined(HAS_MEMC) | |
441 | memc_write(VDMA_INIT, off >> 2); | |
442 | #elif defined(HAS_IOMD) | |
443 | iomd_writel(info->fix.smem_start + off, IOMD_VIDINIT); | |
444 | #endif | |
445 | } | |
446 | ||
447 | static int | |
448 | acornfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) | |
449 | { | |
450 | u_int fontht; | |
451 | int err; | |
452 | ||
453 | /* | |
454 | * FIXME: Find the font height | |
455 | */ | |
456 | fontht = 8; | |
457 | ||
458 | var->red.msb_right = 0; | |
459 | var->green.msb_right = 0; | |
460 | var->blue.msb_right = 0; | |
461 | var->transp.msb_right = 0; | |
462 | ||
463 | switch (var->bits_per_pixel) { | |
464 | case 1: case 2: case 4: case 8: | |
465 | var->red.offset = 0; | |
466 | var->red.length = var->bits_per_pixel; | |
467 | var->green = var->red; | |
468 | var->blue = var->red; | |
469 | var->transp.offset = 0; | |
470 | var->transp.length = 0; | |
471 | break; | |
472 | ||
473 | #ifdef HAS_VIDC20 | |
474 | case 16: | |
475 | var->red.offset = 0; | |
476 | var->red.length = 5; | |
477 | var->green.offset = 5; | |
478 | var->green.length = 5; | |
479 | var->blue.offset = 10; | |
480 | var->blue.length = 5; | |
481 | var->transp.offset = 15; | |
482 | var->transp.length = 1; | |
483 | break; | |
484 | ||
485 | case 32: | |
486 | var->red.offset = 0; | |
487 | var->red.length = 8; | |
488 | var->green.offset = 8; | |
489 | var->green.length = 8; | |
490 | var->blue.offset = 16; | |
491 | var->blue.length = 8; | |
492 | var->transp.offset = 24; | |
493 | var->transp.length = 4; | |
494 | break; | |
495 | #endif | |
496 | default: | |
497 | return -EINVAL; | |
498 | } | |
499 | ||
500 | /* | |
501 | * Check to see if the pixel rate is valid. | |
502 | */ | |
503 | if (!acornfb_valid_pixrate(var)) | |
504 | return -EINVAL; | |
505 | ||
506 | /* | |
507 | * Validate and adjust the resolution to | |
508 | * match the video generator hardware. | |
509 | */ | |
510 | err = acornfb_adjust_timing(info, var, fontht); | |
511 | if (err) | |
512 | return err; | |
513 | ||
514 | /* | |
515 | * Validate the timing against the | |
516 | * monitor hardware. | |
517 | */ | |
518 | return acornfb_validate_timing(var, &info->monspecs); | |
519 | } | |
520 | ||
521 | static int acornfb_set_par(struct fb_info *info) | |
522 | { | |
523 | switch (info->var.bits_per_pixel) { | |
524 | case 1: | |
525 | current_par.palette_size = 2; | |
526 | info->fix.visual = FB_VISUAL_MONO10; | |
527 | break; | |
528 | case 2: | |
529 | current_par.palette_size = 4; | |
530 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
531 | break; | |
532 | case 4: | |
533 | current_par.palette_size = 16; | |
534 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
535 | break; | |
536 | case 8: | |
537 | current_par.palette_size = VIDC_PALETTE_SIZE; | |
1da177e4 | 538 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; |
1da177e4 LT |
539 | break; |
540 | #ifdef HAS_VIDC20 | |
541 | case 16: | |
542 | current_par.palette_size = 32; | |
543 | info->fix.visual = FB_VISUAL_DIRECTCOLOR; | |
544 | break; | |
545 | case 32: | |
546 | current_par.palette_size = VIDC_PALETTE_SIZE; | |
547 | info->fix.visual = FB_VISUAL_DIRECTCOLOR; | |
548 | break; | |
549 | #endif | |
550 | default: | |
551 | BUG(); | |
552 | } | |
553 | ||
554 | info->fix.line_length = (info->var.xres * info->var.bits_per_pixel) / 8; | |
555 | ||
556 | #if defined(HAS_MEMC) | |
557 | { | |
558 | unsigned long size = info->fix.smem_len - VDMA_XFERSIZE; | |
559 | ||
560 | memc_write(VDMA_START, 0); | |
561 | memc_write(VDMA_END, size >> 2); | |
562 | } | |
563 | #elif defined(HAS_IOMD) | |
564 | { | |
565 | unsigned long start, size; | |
566 | u_int control; | |
567 | ||
568 | start = info->fix.smem_start; | |
569 | size = current_par.screen_end; | |
570 | ||
571 | if (current_par.using_vram) { | |
572 | size -= current_par.vram_half_sam; | |
573 | control = DMA_CR_E | (current_par.vram_half_sam / 256); | |
574 | } else { | |
575 | size -= 16; | |
576 | control = DMA_CR_E | DMA_CR_D | 16; | |
577 | } | |
578 | ||
579 | iomd_writel(start, IOMD_VIDSTART); | |
580 | iomd_writel(size, IOMD_VIDEND); | |
581 | iomd_writel(control, IOMD_VIDCR); | |
582 | } | |
583 | #endif | |
584 | ||
585 | acornfb_update_dma(info, &info->var); | |
586 | acornfb_set_timing(info); | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
591 | static int | |
592 | acornfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) | |
593 | { | |
594 | u_int y_bottom = var->yoffset; | |
595 | ||
596 | if (!(var->vmode & FB_VMODE_YWRAP)) | |
2970840c | 597 | y_bottom += info->var.yres; |
1da177e4 | 598 | |
2970840c | 599 | if (y_bottom > info->var.yres_virtual) |
3846e93a | 600 | return -EINVAL; |
1da177e4 LT |
601 | |
602 | acornfb_update_dma(info, var); | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
1da177e4 LT |
607 | static struct fb_ops acornfb_ops = { |
608 | .owner = THIS_MODULE, | |
609 | .fb_check_var = acornfb_check_var, | |
610 | .fb_set_par = acornfb_set_par, | |
611 | .fb_setcolreg = acornfb_setcolreg, | |
612 | .fb_pan_display = acornfb_pan_display, | |
613 | .fb_fillrect = cfb_fillrect, | |
614 | .fb_copyarea = cfb_copyarea, | |
615 | .fb_imageblit = cfb_imageblit, | |
1da177e4 LT |
616 | }; |
617 | ||
618 | /* | |
619 | * Everything after here is initialisation!!! | |
620 | */ | |
48c68c4f | 621 | static struct fb_videomode modedb[] = { |
1da177e4 LT |
622 | { /* 320x256 @ 50Hz */ |
623 | NULL, 50, 320, 256, 125000, 92, 62, 35, 19, 38, 2, | |
624 | FB_SYNC_COMP_HIGH_ACT, | |
625 | FB_VMODE_NONINTERLACED | |
626 | }, { /* 640x250 @ 50Hz, 15.6 kHz hsync */ | |
627 | NULL, 50, 640, 250, 62500, 185, 123, 38, 21, 76, 3, | |
628 | 0, | |
629 | FB_VMODE_NONINTERLACED | |
630 | }, { /* 640x256 @ 50Hz, 15.6 kHz hsync */ | |
631 | NULL, 50, 640, 256, 62500, 185, 123, 35, 18, 76, 3, | |
632 | 0, | |
633 | FB_VMODE_NONINTERLACED | |
634 | }, { /* 640x512 @ 50Hz, 26.8 kHz hsync */ | |
635 | NULL, 50, 640, 512, 41667, 113, 87, 18, 1, 56, 3, | |
636 | 0, | |
637 | FB_VMODE_NONINTERLACED | |
638 | }, { /* 640x250 @ 70Hz, 31.5 kHz hsync */ | |
639 | NULL, 70, 640, 250, 39722, 48, 16, 109, 88, 96, 2, | |
640 | 0, | |
641 | FB_VMODE_NONINTERLACED | |
642 | }, { /* 640x256 @ 70Hz, 31.5 kHz hsync */ | |
643 | NULL, 70, 640, 256, 39722, 48, 16, 106, 85, 96, 2, | |
644 | 0, | |
645 | FB_VMODE_NONINTERLACED | |
646 | }, { /* 640x352 @ 70Hz, 31.5 kHz hsync */ | |
647 | NULL, 70, 640, 352, 39722, 48, 16, 58, 37, 96, 2, | |
648 | 0, | |
649 | FB_VMODE_NONINTERLACED | |
650 | }, { /* 640x480 @ 60Hz, 31.5 kHz hsync */ | |
651 | NULL, 60, 640, 480, 39722, 48, 16, 32, 11, 96, 2, | |
652 | 0, | |
653 | FB_VMODE_NONINTERLACED | |
654 | }, { /* 800x600 @ 56Hz, 35.2 kHz hsync */ | |
655 | NULL, 56, 800, 600, 27778, 101, 23, 22, 1, 100, 2, | |
656 | 0, | |
657 | FB_VMODE_NONINTERLACED | |
658 | }, { /* 896x352 @ 60Hz, 21.8 kHz hsync */ | |
659 | NULL, 60, 896, 352, 41667, 59, 27, 9, 0, 118, 3, | |
660 | 0, | |
661 | FB_VMODE_NONINTERLACED | |
662 | }, { /* 1024x 768 @ 60Hz, 48.4 kHz hsync */ | |
663 | NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6, | |
664 | 0, | |
665 | FB_VMODE_NONINTERLACED | |
666 | }, { /* 1280x1024 @ 60Hz, 63.8 kHz hsync */ | |
667 | NULL, 60, 1280, 1024, 9090, 186, 96, 38, 1, 160, 3, | |
668 | 0, | |
669 | FB_VMODE_NONINTERLACED | |
670 | } | |
671 | }; | |
672 | ||
48c68c4f | 673 | static struct fb_videomode acornfb_default_mode = { |
1da177e4 LT |
674 | .name = NULL, |
675 | .refresh = 60, | |
676 | .xres = 640, | |
677 | .yres = 480, | |
678 | .pixclock = 39722, | |
679 | .left_margin = 56, | |
680 | .right_margin = 16, | |
681 | .upper_margin = 34, | |
682 | .lower_margin = 9, | |
683 | .hsync_len = 88, | |
684 | .vsync_len = 2, | |
685 | .sync = 0, | |
686 | .vmode = FB_VMODE_NONINTERLACED | |
687 | }; | |
688 | ||
48c68c4f | 689 | static void acornfb_init_fbinfo(void) |
1da177e4 LT |
690 | { |
691 | static int first = 1; | |
692 | ||
693 | if (!first) | |
694 | return; | |
695 | first = 0; | |
696 | ||
697 | fb_info.fbops = &acornfb_ops; | |
698 | fb_info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN; | |
699 | fb_info.pseudo_palette = current_par.pseudo_palette; | |
700 | ||
701 | strcpy(fb_info.fix.id, "Acorn"); | |
702 | fb_info.fix.type = FB_TYPE_PACKED_PIXELS; | |
703 | fb_info.fix.type_aux = 0; | |
704 | fb_info.fix.xpanstep = 0; | |
705 | fb_info.fix.ypanstep = 1; | |
706 | fb_info.fix.ywrapstep = 1; | |
707 | fb_info.fix.line_length = 0; | |
708 | fb_info.fix.accel = FB_ACCEL_NONE; | |
709 | ||
710 | /* | |
711 | * setup initial parameters | |
712 | */ | |
713 | memset(&fb_info.var, 0, sizeof(fb_info.var)); | |
714 | ||
715 | #if defined(HAS_VIDC20) | |
716 | fb_info.var.red.length = 8; | |
717 | fb_info.var.transp.length = 4; | |
1da177e4 LT |
718 | #endif |
719 | fb_info.var.green = fb_info.var.red; | |
720 | fb_info.var.blue = fb_info.var.red; | |
721 | fb_info.var.nonstd = 0; | |
722 | fb_info.var.activate = FB_ACTIVATE_NOW; | |
723 | fb_info.var.height = -1; | |
724 | fb_info.var.width = -1; | |
725 | fb_info.var.vmode = FB_VMODE_NONINTERLACED; | |
726 | fb_info.var.accel_flags = FB_ACCELF_TEXT; | |
727 | ||
728 | current_par.dram_size = 0; | |
729 | current_par.montype = -1; | |
730 | current_par.dpms = 0; | |
731 | } | |
732 | ||
733 | /* | |
734 | * setup acornfb options: | |
735 | * | |
736 | * mon:hmin-hmax:vmin-vmax:dpms:width:height | |
737 | * Set monitor parameters: | |
738 | * hmin = horizontal minimum frequency (Hz) | |
739 | * hmax = horizontal maximum frequency (Hz) (optional) | |
740 | * vmin = vertical minimum frequency (Hz) | |
741 | * vmax = vertical maximum frequency (Hz) (optional) | |
742 | * dpms = DPMS supported? (optional) | |
743 | * width = width of picture in mm. (optional) | |
744 | * height = height of picture in mm. (optional) | |
745 | * | |
746 | * montype:type | |
747 | * Set RISC-OS style monitor type: | |
748 | * 0 (or tv) - TV frequency | |
749 | * 1 (or multi) - Multi frequency | |
750 | * 2 (or hires) - Hi-res monochrome | |
751 | * 3 (or vga) - VGA | |
752 | * 4 (or svga) - SVGA | |
753 | * auto, or option missing | |
754 | * - try hardware detect | |
755 | * | |
756 | * dram:size | |
757 | * Set the amount of DRAM to use for the frame buffer | |
758 | * (even if you have VRAM). | |
759 | * size can optionally be followed by 'M' or 'K' for | |
760 | * MB or KB respectively. | |
761 | */ | |
48c68c4f | 762 | static void acornfb_parse_mon(char *opt) |
1da177e4 LT |
763 | { |
764 | char *p = opt; | |
765 | ||
766 | current_par.montype = -2; | |
767 | ||
768 | fb_info.monspecs.hfmin = simple_strtoul(p, &p, 0); | |
769 | if (*p == '-') | |
770 | fb_info.monspecs.hfmax = simple_strtoul(p + 1, &p, 0); | |
771 | else | |
772 | fb_info.monspecs.hfmax = fb_info.monspecs.hfmin; | |
773 | ||
774 | if (*p != ':') | |
775 | goto bad; | |
776 | ||
777 | fb_info.monspecs.vfmin = simple_strtoul(p + 1, &p, 0); | |
778 | if (*p == '-') | |
779 | fb_info.monspecs.vfmax = simple_strtoul(p + 1, &p, 0); | |
780 | else | |
781 | fb_info.monspecs.vfmax = fb_info.monspecs.vfmin; | |
782 | ||
783 | if (*p != ':') | |
784 | goto check_values; | |
785 | ||
786 | fb_info.monspecs.dpms = simple_strtoul(p + 1, &p, 0); | |
787 | ||
788 | if (*p != ':') | |
789 | goto check_values; | |
790 | ||
791 | fb_info.var.width = simple_strtoul(p + 1, &p, 0); | |
792 | ||
793 | if (*p != ':') | |
794 | goto check_values; | |
795 | ||
796 | fb_info.var.height = simple_strtoul(p + 1, NULL, 0); | |
797 | ||
798 | check_values: | |
799 | if (fb_info.monspecs.hfmax < fb_info.monspecs.hfmin || | |
800 | fb_info.monspecs.vfmax < fb_info.monspecs.vfmin) | |
801 | goto bad; | |
802 | return; | |
803 | ||
804 | bad: | |
805 | printk(KERN_ERR "Acornfb: bad monitor settings: %s\n", opt); | |
806 | current_par.montype = -1; | |
807 | } | |
808 | ||
48c68c4f | 809 | static void acornfb_parse_montype(char *opt) |
1da177e4 LT |
810 | { |
811 | current_par.montype = -2; | |
812 | ||
813 | if (strncmp(opt, "tv", 2) == 0) { | |
814 | opt += 2; | |
815 | current_par.montype = 0; | |
816 | } else if (strncmp(opt, "multi", 5) == 0) { | |
817 | opt += 5; | |
818 | current_par.montype = 1; | |
819 | } else if (strncmp(opt, "hires", 5) == 0) { | |
820 | opt += 5; | |
821 | current_par.montype = 2; | |
822 | } else if (strncmp(opt, "vga", 3) == 0) { | |
823 | opt += 3; | |
824 | current_par.montype = 3; | |
825 | } else if (strncmp(opt, "svga", 4) == 0) { | |
826 | opt += 4; | |
827 | current_par.montype = 4; | |
828 | } else if (strncmp(opt, "auto", 4) == 0) { | |
829 | opt += 4; | |
830 | current_par.montype = -1; | |
831 | } else if (isdigit(*opt)) | |
832 | current_par.montype = simple_strtoul(opt, &opt, 0); | |
833 | ||
834 | if (current_par.montype == -2 || | |
835 | current_par.montype > NR_MONTYPES) { | |
836 | printk(KERN_ERR "acornfb: unknown monitor type: %s\n", | |
837 | opt); | |
838 | current_par.montype = -1; | |
839 | } else | |
840 | if (opt && *opt) { | |
841 | if (strcmp(opt, ",dpms") == 0) | |
842 | current_par.dpms = 1; | |
843 | else | |
844 | printk(KERN_ERR | |
845 | "acornfb: unknown monitor option: %s\n", | |
846 | opt); | |
847 | } | |
848 | } | |
849 | ||
48c68c4f | 850 | static void acornfb_parse_dram(char *opt) |
1da177e4 LT |
851 | { |
852 | unsigned int size; | |
853 | ||
854 | size = simple_strtoul(opt, &opt, 0); | |
855 | ||
856 | if (opt) { | |
857 | switch (*opt) { | |
858 | case 'M': | |
859 | case 'm': | |
860 | size *= 1024; | |
861 | case 'K': | |
862 | case 'k': | |
863 | size *= 1024; | |
864 | default: | |
865 | break; | |
866 | } | |
867 | } | |
868 | ||
869 | current_par.dram_size = size; | |
870 | } | |
871 | ||
872 | static struct options { | |
873 | char *name; | |
874 | void (*parse)(char *opt); | |
48c68c4f | 875 | } opt_table[] = { |
1da177e4 LT |
876 | { "mon", acornfb_parse_mon }, |
877 | { "montype", acornfb_parse_montype }, | |
878 | { "dram", acornfb_parse_dram }, | |
879 | { NULL, NULL } | |
880 | }; | |
881 | ||
48c68c4f | 882 | static int acornfb_setup(char *options) |
1da177e4 LT |
883 | { |
884 | struct options *optp; | |
885 | char *opt; | |
886 | ||
887 | if (!options || !*options) | |
888 | return 0; | |
889 | ||
890 | acornfb_init_fbinfo(); | |
891 | ||
892 | while ((opt = strsep(&options, ",")) != NULL) { | |
893 | if (!*opt) | |
894 | continue; | |
895 | ||
896 | for (optp = opt_table; optp->name; optp++) { | |
897 | int optlen; | |
898 | ||
899 | optlen = strlen(optp->name); | |
900 | ||
901 | if (strncmp(opt, optp->name, optlen) == 0 && | |
902 | opt[optlen] == ':') { | |
903 | optp->parse(opt + optlen + 1); | |
904 | break; | |
905 | } | |
906 | } | |
907 | ||
908 | if (!optp->name) | |
909 | printk(KERN_ERR "acornfb: unknown parameter: %s\n", | |
910 | opt); | |
911 | } | |
912 | return 0; | |
913 | } | |
914 | ||
915 | /* | |
916 | * Detect type of monitor connected | |
917 | * For now, we just assume SVGA | |
918 | */ | |
48c68c4f | 919 | static int acornfb_detect_monitortype(void) |
1da177e4 LT |
920 | { |
921 | return 4; | |
922 | } | |
923 | ||
924 | /* | |
925 | * This enables the unused memory to be freed on older Acorn machines. | |
926 | * We are freeing memory on behalf of the architecture initialisation | |
927 | * code here. | |
928 | */ | |
929 | static inline void | |
930 | free_unused_pages(unsigned int virtual_start, unsigned int virtual_end) | |
931 | { | |
932 | int mb_freed = 0; | |
933 | ||
934 | /* | |
935 | * Align addresses | |
936 | */ | |
937 | virtual_start = PAGE_ALIGN(virtual_start); | |
938 | virtual_end = PAGE_ALIGN(virtual_end); | |
939 | ||
940 | while (virtual_start < virtual_end) { | |
941 | struct page *page; | |
942 | ||
943 | /* | |
944 | * Clear page reserved bit, | |
945 | * set count to 1, and free | |
946 | * the page. | |
947 | */ | |
948 | page = virt_to_page(virtual_start); | |
3207d9e7 | 949 | __free_reserved_page(page); |
1da177e4 LT |
950 | |
951 | virtual_start += PAGE_SIZE; | |
952 | mb_freed += PAGE_SIZE / 1024; | |
953 | } | |
954 | ||
955 | printk("acornfb: freed %dK memory\n", mb_freed); | |
956 | } | |
957 | ||
48c68c4f | 958 | static int acornfb_probe(struct platform_device *dev) |
1da177e4 LT |
959 | { |
960 | unsigned long size; | |
961 | u_int h_sync, v_sync; | |
962 | int rc, i; | |
963 | char *option = NULL; | |
964 | ||
965 | if (fb_get_options("acornfb", &option)) | |
966 | return -ENODEV; | |
967 | acornfb_setup(option); | |
968 | ||
969 | acornfb_init_fbinfo(); | |
970 | ||
3ae5eaec | 971 | current_par.dev = &dev->dev; |
1da177e4 LT |
972 | |
973 | if (current_par.montype == -1) | |
974 | current_par.montype = acornfb_detect_monitortype(); | |
975 | ||
976 | if (current_par.montype == -1 || current_par.montype > NR_MONTYPES) | |
977 | current_par.montype = 4; | |
978 | ||
979 | if (current_par.montype >= 0) { | |
980 | fb_info.monspecs = monspecs[current_par.montype]; | |
981 | fb_info.monspecs.dpms = current_par.dpms; | |
982 | } | |
983 | ||
984 | /* | |
985 | * Try to select a suitable default mode | |
986 | */ | |
d1ae418e | 987 | for (i = 0; i < ARRAY_SIZE(modedb); i++) { |
1da177e4 LT |
988 | unsigned long hs; |
989 | ||
990 | hs = modedb[i].refresh * | |
991 | (modedb[i].yres + modedb[i].upper_margin + | |
992 | modedb[i].lower_margin + modedb[i].vsync_len); | |
993 | if (modedb[i].xres == DEFAULT_XRES && | |
994 | modedb[i].yres == DEFAULT_YRES && | |
995 | modedb[i].refresh >= fb_info.monspecs.vfmin && | |
996 | modedb[i].refresh <= fb_info.monspecs.vfmax && | |
997 | hs >= fb_info.monspecs.hfmin && | |
998 | hs <= fb_info.monspecs.hfmax) { | |
999 | acornfb_default_mode = modedb[i]; | |
1000 | break; | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | fb_info.screen_base = (char *)SCREEN_BASE; | |
1005 | fb_info.fix.smem_start = SCREEN_START; | |
1006 | current_par.using_vram = 0; | |
1007 | ||
1008 | /* | |
1009 | * If vram_size is set, we are using VRAM in | |
1010 | * a Risc PC. However, if the user has specified | |
1011 | * an amount of DRAM then use that instead. | |
1012 | */ | |
1013 | if (vram_size && !current_par.dram_size) { | |
1014 | size = vram_size; | |
1015 | current_par.vram_half_sam = vram_size / 1024; | |
1016 | current_par.using_vram = 1; | |
1017 | } else if (current_par.dram_size) | |
1018 | size = current_par.dram_size; | |
1019 | else | |
1020 | size = MAX_SIZE; | |
1021 | ||
1022 | /* | |
1023 | * Limit maximum screen size. | |
1024 | */ | |
1025 | if (size > MAX_SIZE) | |
1026 | size = MAX_SIZE; | |
1027 | ||
1028 | size = PAGE_ALIGN(size); | |
1029 | ||
1030 | #if defined(HAS_VIDC20) | |
1031 | if (!current_par.using_vram) { | |
1032 | dma_addr_t handle; | |
1033 | void *base; | |
1034 | ||
1035 | /* | |
1036 | * RiscPC needs to allocate the DRAM memory | |
1037 | * for the framebuffer if we are not using | |
1038 | * VRAM. | |
1039 | */ | |
f6e45661 LR |
1040 | base = dma_alloc_wc(current_par.dev, size, &handle, |
1041 | GFP_KERNEL); | |
1da177e4 | 1042 | if (base == NULL) { |
0cb51f65 | 1043 | printk(KERN_ERR "acornfb: unable to allocate screen memory\n"); |
1da177e4 LT |
1044 | return -ENOMEM; |
1045 | } | |
1046 | ||
1047 | fb_info.screen_base = base; | |
1048 | fb_info.fix.smem_start = handle; | |
1049 | } | |
1050 | #endif | |
1da177e4 LT |
1051 | fb_info.fix.smem_len = size; |
1052 | current_par.palette_size = VIDC_PALETTE_SIZE; | |
1053 | ||
1054 | /* | |
1055 | * Lookup the timing for this resolution. If we can't | |
1056 | * find it, then we can't restore it if we change | |
1057 | * the resolution, so we disable this feature. | |
1058 | */ | |
1059 | do { | |
1060 | rc = fb_find_mode(&fb_info.var, &fb_info, NULL, modedb, | |
d1ae418e | 1061 | ARRAY_SIZE(modedb), |
1da177e4 LT |
1062 | &acornfb_default_mode, DEFAULT_BPP); |
1063 | /* | |
1064 | * If we found an exact match, all ok. | |
1065 | */ | |
1066 | if (rc == 1) | |
1067 | break; | |
1068 | ||
1069 | rc = fb_find_mode(&fb_info.var, &fb_info, NULL, NULL, 0, | |
1070 | &acornfb_default_mode, DEFAULT_BPP); | |
1071 | /* | |
1072 | * If we found an exact match, all ok. | |
1073 | */ | |
1074 | if (rc == 1) | |
1075 | break; | |
1076 | ||
1077 | rc = fb_find_mode(&fb_info.var, &fb_info, NULL, modedb, | |
d1ae418e | 1078 | ARRAY_SIZE(modedb), |
1da177e4 LT |
1079 | &acornfb_default_mode, DEFAULT_BPP); |
1080 | if (rc) | |
1081 | break; | |
1082 | ||
1083 | rc = fb_find_mode(&fb_info.var, &fb_info, NULL, NULL, 0, | |
1084 | &acornfb_default_mode, DEFAULT_BPP); | |
1085 | } while (0); | |
1086 | ||
1087 | /* | |
1088 | * If we didn't find an exact match, try the | |
1089 | * generic database. | |
1090 | */ | |
1091 | if (rc == 0) { | |
1092 | printk("Acornfb: no valid mode found\n"); | |
1093 | return -EINVAL; | |
1094 | } | |
1095 | ||
1096 | h_sync = 1953125000 / fb_info.var.pixclock; | |
1097 | h_sync = h_sync * 512 / (fb_info.var.xres + fb_info.var.left_margin + | |
1098 | fb_info.var.right_margin + fb_info.var.hsync_len); | |
1099 | v_sync = h_sync / (fb_info.var.yres + fb_info.var.upper_margin + | |
1100 | fb_info.var.lower_margin + fb_info.var.vsync_len); | |
1101 | ||
0cb51f65 | 1102 | printk(KERN_INFO "Acornfb: %dkB %cRAM, %s, using %dx%d, %d.%03dkHz, %dHz\n", |
1da177e4 LT |
1103 | fb_info.fix.smem_len / 1024, |
1104 | current_par.using_vram ? 'V' : 'D', | |
1105 | VIDC_NAME, fb_info.var.xres, fb_info.var.yres, | |
1106 | h_sync / 1000, h_sync % 1000, v_sync); | |
1107 | ||
1108 | printk(KERN_INFO "Acornfb: Monitor: %d.%03d-%d.%03dkHz, %d-%dHz%s\n", | |
1109 | fb_info.monspecs.hfmin / 1000, fb_info.monspecs.hfmin % 1000, | |
1110 | fb_info.monspecs.hfmax / 1000, fb_info.monspecs.hfmax % 1000, | |
1111 | fb_info.monspecs.vfmin, fb_info.monspecs.vfmax, | |
1112 | fb_info.monspecs.dpms ? ", DPMS" : ""); | |
1113 | ||
1114 | if (fb_set_var(&fb_info, &fb_info.var)) | |
1115 | printk(KERN_ERR "Acornfb: unable to set display parameters\n"); | |
1116 | ||
1117 | if (register_framebuffer(&fb_info) < 0) | |
1118 | return -EINVAL; | |
1119 | return 0; | |
1120 | } | |
1121 | ||
3ae5eaec | 1122 | static struct platform_driver acornfb_driver = { |
1da177e4 | 1123 | .probe = acornfb_probe, |
3ae5eaec RK |
1124 | .driver = { |
1125 | .name = "acornfb", | |
1126 | }, | |
1da177e4 LT |
1127 | }; |
1128 | ||
1129 | static int __init acornfb_init(void) | |
1130 | { | |
3ae5eaec | 1131 | return platform_driver_register(&acornfb_driver); |
1da177e4 LT |
1132 | } |
1133 | ||
1134 | module_init(acornfb_init); | |
1135 | ||
1136 | MODULE_AUTHOR("Russell King"); | |
1137 | MODULE_DESCRIPTION("VIDC 1/1a/20 framebuffer driver"); | |
1138 | MODULE_LICENSE("GPL"); |