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ce443ab5 G |
1 | /* |
2 | * Frame Buffer Driver for PKUnity-v3 Unigfx | |
3 | * Code specific to PKUnity SoC and UniCore ISA | |
4 | * | |
5 | * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn> | |
6 | * Copyright (C) 2001-2010 Guan Xuetao | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/errno.h> | |
ce443ab5 G |
16 | #include <linux/platform_device.h> |
17 | #include <linux/clk.h> | |
18 | #include <linux/fb.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/console.h> | |
21 | ||
22 | #include <asm/sizes.h> | |
23 | #include <mach/hardware.h> | |
24 | ||
25 | /* Platform_data reserved for unifb registers. */ | |
26 | #define UNIFB_REGS_NUM 10 | |
27 | /* RAM reserved for the frame buffer. */ | |
28 | #define UNIFB_MEMSIZE (SZ_4M) /* 4 MB for 1024*768*32b */ | |
29 | ||
30 | /* | |
31 | * cause UNIGFX don not have EDID | |
32 | * all the modes are organized as follow | |
33 | */ | |
34 | static const struct fb_videomode unifb_modes[] = { | |
35 | /* 0 640x480-60 VESA */ | |
36 | { "640x480@60", 60, 640, 480, 25175000, 48, 16, 34, 10, 96, 1, | |
37 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
38 | /* 1 640x480-75 VESA */ | |
39 | { "640x480@75", 75, 640, 480, 31500000, 120, 16, 18, 1, 64, 1, | |
40 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
41 | /* 2 800x600-60 VESA */ | |
42 | { "800x600@60", 60, 800, 600, 40000000, 88, 40, 26, 1, 128, 1, | |
43 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
44 | /* 3 800x600-75 VESA */ | |
45 | { "800x600@75", 75, 800, 600, 49500000, 160, 16, 23, 1, 80, 1, | |
46 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
47 | /* 4 1024x768-60 VESA */ | |
48 | { "1024x768@60", 60, 1024, 768, 65000000, 160, 24, 34, 3, 136, 1, | |
49 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
50 | /* 5 1024x768-75 VESA */ | |
51 | { "1024x768@75", 75, 1024, 768, 78750000, 176, 16, 30, 1, 96, 1, | |
52 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
53 | /* 6 1280x960-60 VESA */ | |
54 | { "1280x960@60", 60, 1280, 960, 108000000, 312, 96, 38, 1, 112, 1, | |
55 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
56 | /* 7 1440x900-60 VESA */ | |
57 | { "1440x900@60", 60, 1440, 900, 106500000, 232, 80, 30, 3, 152, 1, | |
58 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
59 | /* 8 FIXME 9 1024x600-60 VESA UNTESTED */ | |
60 | { "1024x600@60", 60, 1024, 600, 50650000, 160, 24, 26, 1, 136, 1, | |
61 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
62 | /* 9 FIXME 10 1024x600-75 VESA UNTESTED */ | |
63 | { "1024x600@75", 75, 1024, 600, 61500000, 176, 16, 23, 1, 96, 1, | |
64 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
65 | /* 10 FIXME 11 1366x768-60 VESA UNTESTED */ | |
66 | { "1366x768@60", 60, 1366, 768, 85500000, 256, 58, 18, 1, 112, 3, | |
67 | 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, | |
68 | }; | |
69 | ||
70 | static struct fb_var_screeninfo unifb_default = { | |
71 | .xres = 640, | |
72 | .yres = 480, | |
73 | .xres_virtual = 640, | |
74 | .yres_virtual = 480, | |
75 | .bits_per_pixel = 16, | |
76 | .red = { 11, 5, 0 }, | |
77 | .green = { 5, 6, 0 }, | |
78 | .blue = { 0, 5, 0 }, | |
79 | .activate = FB_ACTIVATE_NOW, | |
80 | .height = -1, | |
81 | .width = -1, | |
82 | .pixclock = 25175000, | |
83 | .left_margin = 48, | |
84 | .right_margin = 16, | |
85 | .upper_margin = 33, | |
86 | .lower_margin = 10, | |
87 | .hsync_len = 96, | |
88 | .vsync_len = 2, | |
89 | .vmode = FB_VMODE_NONINTERLACED, | |
90 | }; | |
91 | ||
92 | static struct fb_fix_screeninfo unifb_fix = { | |
93 | .id = "UNIGFX FB", | |
94 | .type = FB_TYPE_PACKED_PIXELS, | |
95 | .visual = FB_VISUAL_TRUECOLOR, | |
96 | .xpanstep = 1, | |
97 | .ypanstep = 1, | |
98 | .ywrapstep = 1, | |
99 | .accel = FB_ACCEL_NONE, | |
100 | }; | |
101 | ||
102 | static void unifb_sync(struct fb_info *info) | |
103 | { | |
104 | /* TODO: may, this can be replaced by interrupt */ | |
105 | int cnt; | |
106 | ||
107 | for (cnt = 0; cnt < 0x10000000; cnt++) { | |
108 | if (readl(UGE_COMMAND) & 0x1000000) | |
109 | return; | |
110 | } | |
111 | ||
112 | if (cnt > 0x8000000) | |
113 | dev_warn(info->device, "Warning: UniGFX GE time out ...\n"); | |
114 | } | |
115 | ||
116 | static void unifb_prim_fillrect(struct fb_info *info, | |
117 | const struct fb_fillrect *region) | |
118 | { | |
119 | int awidth = region->width; | |
120 | int aheight = region->height; | |
121 | int m_iBpp = info->var.bits_per_pixel; | |
122 | int screen_width = info->var.xres; | |
123 | int src_sel = 1; /* from fg_color */ | |
124 | int pat_sel = 1; | |
125 | int src_x0 = 0; | |
126 | int dst_x0 = region->dx; | |
127 | int src_y0 = 0; | |
128 | int dst_y0 = region->dy; | |
129 | int rop_alpha_sel = 0; | |
130 | int rop_alpha_code = 0xCC; | |
131 | int x_dir = 1; | |
132 | int y_dir = 1; | |
133 | int alpha_r = 0; | |
134 | int alpha_sel = 0; | |
135 | int dst_pitch = screen_width * (m_iBpp / 8); | |
136 | int dst_offset = dst_y0 * dst_pitch + dst_x0 * (m_iBpp / 8); | |
137 | int src_pitch = screen_width * (m_iBpp / 8); | |
138 | int src_offset = src_y0 * src_pitch + src_x0 * (m_iBpp / 8); | |
139 | unsigned int command = 0; | |
140 | int clip_region = 0; | |
141 | int clip_en = 0; | |
142 | int tp_en = 0; | |
143 | int fg_color = 0; | |
144 | int bottom = info->var.yres - 1; | |
145 | int right = info->var.xres - 1; | |
146 | int top = 0; | |
147 | ||
148 | bottom = (bottom << 16) | right; | |
149 | command = (rop_alpha_sel << 26) | (pat_sel << 18) | (src_sel << 16) | |
150 | | (x_dir << 20) | (y_dir << 21) | (command << 24) | |
151 | | (clip_region << 23) | (clip_en << 22) | (tp_en << 27); | |
152 | src_pitch = (dst_pitch << 16) | src_pitch; | |
153 | awidth = awidth | (aheight << 16); | |
154 | alpha_r = ((rop_alpha_code & 0xff) << 8) | (alpha_r & 0xff) | |
155 | | (alpha_sel << 16); | |
156 | src_x0 = (src_x0 & 0x1fff) | ((src_y0 & 0x1fff) << 16); | |
157 | dst_x0 = (dst_x0 & 0x1fff) | ((dst_y0 & 0x1fff) << 16); | |
158 | fg_color = region->color; | |
159 | ||
160 | unifb_sync(info); | |
161 | ||
162 | writel(((u32 *)(info->pseudo_palette))[fg_color], UGE_FCOLOR); | |
163 | writel(0, UGE_BCOLOR); | |
164 | writel(src_pitch, UGE_PITCH); | |
165 | writel(src_offset, UGE_SRCSTART); | |
166 | writel(dst_offset, UGE_DSTSTART); | |
167 | writel(awidth, UGE_WIDHEIGHT); | |
168 | writel(top, UGE_CLIP0); | |
169 | writel(bottom, UGE_CLIP1); | |
170 | writel(alpha_r, UGE_ROPALPHA); | |
171 | writel(src_x0, UGE_SRCXY); | |
172 | writel(dst_x0, UGE_DSTXY); | |
173 | writel(command, UGE_COMMAND); | |
174 | } | |
175 | ||
176 | static void unifb_fillrect(struct fb_info *info, | |
177 | const struct fb_fillrect *region) | |
178 | { | |
179 | struct fb_fillrect modded; | |
180 | int vxres, vyres; | |
181 | ||
182 | if (info->flags & FBINFO_HWACCEL_DISABLED) { | |
183 | sys_fillrect(info, region); | |
184 | return; | |
185 | } | |
186 | ||
187 | vxres = info->var.xres_virtual; | |
188 | vyres = info->var.yres_virtual; | |
189 | ||
190 | memcpy(&modded, region, sizeof(struct fb_fillrect)); | |
191 | ||
192 | if (!modded.width || !modded.height || | |
193 | modded.dx >= vxres || modded.dy >= vyres) | |
194 | return; | |
195 | ||
196 | if (modded.dx + modded.width > vxres) | |
197 | modded.width = vxres - modded.dx; | |
198 | if (modded.dy + modded.height > vyres) | |
199 | modded.height = vyres - modded.dy; | |
200 | ||
201 | unifb_prim_fillrect(info, &modded); | |
202 | } | |
203 | ||
204 | static void unifb_prim_copyarea(struct fb_info *info, | |
205 | const struct fb_copyarea *area) | |
206 | { | |
207 | int awidth = area->width; | |
208 | int aheight = area->height; | |
209 | int m_iBpp = info->var.bits_per_pixel; | |
210 | int screen_width = info->var.xres; | |
211 | int src_sel = 2; /* from mem */ | |
212 | int pat_sel = 0; | |
213 | int src_x0 = area->sx; | |
214 | int dst_x0 = area->dx; | |
215 | int src_y0 = area->sy; | |
216 | int dst_y0 = area->dy; | |
217 | ||
218 | int rop_alpha_sel = 0; | |
219 | int rop_alpha_code = 0xCC; | |
220 | int x_dir = 1; | |
221 | int y_dir = 1; | |
222 | ||
223 | int alpha_r = 0; | |
224 | int alpha_sel = 0; | |
225 | int dst_pitch = screen_width * (m_iBpp / 8); | |
226 | int dst_offset = dst_y0 * dst_pitch + dst_x0 * (m_iBpp / 8); | |
227 | int src_pitch = screen_width * (m_iBpp / 8); | |
228 | int src_offset = src_y0 * src_pitch + src_x0 * (m_iBpp / 8); | |
229 | unsigned int command = 0; | |
230 | int clip_region = 0; | |
231 | int clip_en = 1; | |
232 | int tp_en = 0; | |
233 | int top = 0; | |
234 | int bottom = info->var.yres; | |
235 | int right = info->var.xres; | |
236 | int fg_color = 0; | |
237 | int bg_color = 0; | |
238 | ||
239 | if (src_x0 < 0) | |
240 | src_x0 = 0; | |
241 | if (src_y0 < 0) | |
242 | src_y0 = 0; | |
243 | ||
244 | if (src_y0 - dst_y0 > 0) { | |
245 | y_dir = 1; | |
246 | } else { | |
247 | y_dir = 0; | |
248 | src_offset = (src_y0 + aheight) * src_pitch + | |
249 | src_x0 * (m_iBpp / 8); | |
250 | dst_offset = (dst_y0 + aheight) * dst_pitch + | |
251 | dst_x0 * (m_iBpp / 8); | |
252 | src_y0 += aheight; | |
253 | dst_y0 += aheight; | |
254 | } | |
255 | ||
256 | command = (rop_alpha_sel << 26) | (pat_sel << 18) | (src_sel << 16) | | |
257 | (x_dir << 20) | (y_dir << 21) | (command << 24) | | |
258 | (clip_region << 23) | (clip_en << 22) | (tp_en << 27); | |
259 | src_pitch = (dst_pitch << 16) | src_pitch; | |
260 | awidth = awidth | (aheight << 16); | |
261 | alpha_r = ((rop_alpha_code & 0xff) << 8) | (alpha_r & 0xff) | | |
262 | (alpha_sel << 16); | |
263 | src_x0 = (src_x0 & 0x1fff) | ((src_y0 & 0x1fff) << 16); | |
264 | dst_x0 = (dst_x0 & 0x1fff) | ((dst_y0 & 0x1fff) << 16); | |
265 | bottom = (bottom << 16) | right; | |
266 | ||
267 | unifb_sync(info); | |
268 | ||
269 | writel(src_pitch, UGE_PITCH); | |
270 | writel(src_offset, UGE_SRCSTART); | |
271 | writel(dst_offset, UGE_DSTSTART); | |
272 | writel(awidth, UGE_WIDHEIGHT); | |
273 | writel(top, UGE_CLIP0); | |
274 | writel(bottom, UGE_CLIP1); | |
275 | writel(bg_color, UGE_BCOLOR); | |
276 | writel(fg_color, UGE_FCOLOR); | |
277 | writel(alpha_r, UGE_ROPALPHA); | |
278 | writel(src_x0, UGE_SRCXY); | |
279 | writel(dst_x0, UGE_DSTXY); | |
280 | writel(command, UGE_COMMAND); | |
281 | } | |
282 | ||
283 | static void unifb_copyarea(struct fb_info *info, const struct fb_copyarea *area) | |
284 | { | |
285 | struct fb_copyarea modded; | |
286 | u32 vxres, vyres; | |
287 | modded.sx = area->sx; | |
288 | modded.sy = area->sy; | |
289 | modded.dx = area->dx; | |
290 | modded.dy = area->dy; | |
291 | modded.width = area->width; | |
292 | modded.height = area->height; | |
293 | ||
294 | if (info->flags & FBINFO_HWACCEL_DISABLED) { | |
295 | sys_copyarea(info, area); | |
296 | return; | |
297 | } | |
298 | ||
299 | vxres = info->var.xres_virtual; | |
300 | vyres = info->var.yres_virtual; | |
301 | ||
302 | if (!modded.width || !modded.height || | |
303 | modded.sx >= vxres || modded.sy >= vyres || | |
304 | modded.dx >= vxres || modded.dy >= vyres) | |
305 | return; | |
306 | ||
307 | if (modded.sx + modded.width > vxres) | |
308 | modded.width = vxres - modded.sx; | |
309 | if (modded.dx + modded.width > vxres) | |
310 | modded.width = vxres - modded.dx; | |
311 | if (modded.sy + modded.height > vyres) | |
312 | modded.height = vyres - modded.sy; | |
313 | if (modded.dy + modded.height > vyres) | |
314 | modded.height = vyres - modded.dy; | |
315 | ||
316 | unifb_prim_copyarea(info, &modded); | |
317 | } | |
318 | ||
319 | static void unifb_imageblit(struct fb_info *info, const struct fb_image *image) | |
320 | { | |
321 | sys_imageblit(info, image); | |
322 | } | |
323 | ||
324 | static u_long get_line_length(int xres_virtual, int bpp) | |
325 | { | |
326 | u_long length; | |
327 | ||
328 | length = xres_virtual * bpp; | |
329 | length = (length + 31) & ~31; | |
330 | length >>= 3; | |
331 | return length; | |
332 | } | |
333 | ||
334 | /* | |
335 | * Setting the video mode has been split into two parts. | |
336 | * First part, xxxfb_check_var, must not write anything | |
337 | * to hardware, it should only verify and adjust var. | |
338 | * This means it doesn't alter par but it does use hardware | |
339 | * data from it to check this var. | |
340 | */ | |
341 | static int unifb_check_var(struct fb_var_screeninfo *var, | |
342 | struct fb_info *info) | |
343 | { | |
344 | u_long line_length; | |
345 | ||
346 | /* | |
347 | * FB_VMODE_CONUPDATE and FB_VMODE_SMOOTH_XPAN are equal! | |
348 | * as FB_VMODE_SMOOTH_XPAN is only used internally | |
349 | */ | |
350 | ||
351 | if (var->vmode & FB_VMODE_CONUPDATE) { | |
352 | var->vmode |= FB_VMODE_YWRAP; | |
353 | var->xoffset = info->var.xoffset; | |
354 | var->yoffset = info->var.yoffset; | |
355 | } | |
356 | ||
357 | /* | |
358 | * Some very basic checks | |
359 | */ | |
360 | if (!var->xres) | |
361 | var->xres = 1; | |
362 | if (!var->yres) | |
363 | var->yres = 1; | |
364 | if (var->xres > var->xres_virtual) | |
365 | var->xres_virtual = var->xres; | |
366 | if (var->yres > var->yres_virtual) | |
367 | var->yres_virtual = var->yres; | |
368 | if (var->bits_per_pixel <= 1) | |
369 | var->bits_per_pixel = 1; | |
370 | else if (var->bits_per_pixel <= 8) | |
371 | var->bits_per_pixel = 8; | |
372 | else if (var->bits_per_pixel <= 16) | |
373 | var->bits_per_pixel = 16; | |
374 | else if (var->bits_per_pixel <= 24) | |
375 | var->bits_per_pixel = 24; | |
376 | else if (var->bits_per_pixel <= 32) | |
377 | var->bits_per_pixel = 32; | |
378 | else | |
379 | return -EINVAL; | |
380 | ||
381 | if (var->xres_virtual < var->xoffset + var->xres) | |
382 | var->xres_virtual = var->xoffset + var->xres; | |
383 | if (var->yres_virtual < var->yoffset + var->yres) | |
384 | var->yres_virtual = var->yoffset + var->yres; | |
385 | ||
386 | /* | |
387 | * Memory limit | |
388 | */ | |
389 | line_length = | |
390 | get_line_length(var->xres_virtual, var->bits_per_pixel); | |
391 | if (line_length * var->yres_virtual > UNIFB_MEMSIZE) | |
392 | return -ENOMEM; | |
393 | ||
394 | /* | |
395 | * Now that we checked it we alter var. The reason being is that the | |
396 | * video mode passed in might not work but slight changes to it might | |
397 | * make it work. This way we let the user know what is acceptable. | |
398 | */ | |
399 | switch (var->bits_per_pixel) { | |
400 | case 1: | |
401 | case 8: | |
402 | var->red.offset = 0; | |
403 | var->red.length = 8; | |
404 | var->green.offset = 0; | |
405 | var->green.length = 8; | |
406 | var->blue.offset = 0; | |
407 | var->blue.length = 8; | |
408 | var->transp.offset = 0; | |
409 | var->transp.length = 0; | |
410 | break; | |
411 | case 16: /* RGBA 5551 */ | |
412 | if (var->transp.length) { | |
413 | var->red.offset = 0; | |
414 | var->red.length = 5; | |
415 | var->green.offset = 5; | |
416 | var->green.length = 5; | |
417 | var->blue.offset = 10; | |
418 | var->blue.length = 5; | |
419 | var->transp.offset = 15; | |
420 | var->transp.length = 1; | |
421 | } else { /* RGB 565 */ | |
422 | var->red.offset = 11; | |
423 | var->red.length = 5; | |
424 | var->green.offset = 5; | |
425 | var->green.length = 6; | |
426 | var->blue.offset = 0; | |
427 | var->blue.length = 5; | |
428 | var->transp.offset = 0; | |
429 | var->transp.length = 0; | |
430 | } | |
431 | break; | |
432 | case 24: /* RGB 888 */ | |
433 | var->red.offset = 0; | |
434 | var->red.length = 8; | |
435 | var->green.offset = 8; | |
436 | var->green.length = 8; | |
437 | var->blue.offset = 16; | |
438 | var->blue.length = 8; | |
439 | var->transp.offset = 0; | |
440 | var->transp.length = 0; | |
441 | break; | |
442 | case 32: /* RGBA 8888 */ | |
443 | var->red.offset = 16; | |
444 | var->red.length = 8; | |
445 | var->green.offset = 8; | |
446 | var->green.length = 8; | |
447 | var->blue.offset = 0; | |
448 | var->blue.length = 8; | |
449 | var->transp.offset = 24; | |
450 | var->transp.length = 8; | |
451 | break; | |
452 | } | |
453 | var->red.msb_right = 0; | |
454 | var->green.msb_right = 0; | |
455 | var->blue.msb_right = 0; | |
456 | var->transp.msb_right = 0; | |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
461 | /* | |
462 | * This routine actually sets the video mode. It's in here where we | |
463 | * the hardware state info->par and fix which can be affected by the | |
464 | * change in par. For this driver it doesn't do much. | |
465 | */ | |
466 | static int unifb_set_par(struct fb_info *info) | |
467 | { | |
468 | int hTotal, vTotal, hSyncStart, hSyncEnd, vSyncStart, vSyncEnd; | |
469 | int format; | |
470 | ||
471 | #ifdef CONFIG_PUV3_PM | |
472 | struct clk *clk_vga; | |
473 | u32 pixclk = 0; | |
474 | int i; | |
475 | ||
476 | for (i = 0; i <= 10; i++) { | |
477 | if (info->var.xres == unifb_modes[i].xres | |
478 | && info->var.yres == unifb_modes[i].yres | |
479 | && info->var.upper_margin == unifb_modes[i].upper_margin | |
480 | && info->var.lower_margin == unifb_modes[i].lower_margin | |
481 | && info->var.left_margin == unifb_modes[i].left_margin | |
482 | && info->var.right_margin == unifb_modes[i].right_margin | |
483 | && info->var.hsync_len == unifb_modes[i].hsync_len | |
484 | && info->var.vsync_len == unifb_modes[i].vsync_len) { | |
485 | pixclk = unifb_modes[i].pixclock; | |
486 | break; | |
487 | } | |
488 | } | |
489 | ||
490 | /* set clock rate */ | |
491 | clk_vga = clk_get(info->device, "VGA_CLK"); | |
492 | if (clk_vga == ERR_PTR(-ENOENT)) | |
493 | return -ENOENT; | |
494 | ||
495 | if (pixclk != 0) { | |
496 | if (clk_set_rate(clk_vga, pixclk)) { /* set clock failed */ | |
497 | info->fix = unifb_fix; | |
498 | info->var = unifb_default; | |
499 | if (clk_set_rate(clk_vga, unifb_default.pixclock)) | |
500 | return -EINVAL; | |
501 | } | |
502 | } | |
503 | #endif | |
504 | ||
505 | info->fix.line_length = get_line_length(info->var.xres_virtual, | |
506 | info->var.bits_per_pixel); | |
507 | ||
508 | hSyncStart = info->var.xres + info->var.right_margin; | |
509 | hSyncEnd = hSyncStart + info->var.hsync_len; | |
510 | hTotal = hSyncEnd + info->var.left_margin; | |
511 | ||
512 | vSyncStart = info->var.yres + info->var.lower_margin; | |
513 | vSyncEnd = vSyncStart + info->var.vsync_len; | |
514 | vTotal = vSyncEnd + info->var.upper_margin; | |
515 | ||
516 | switch (info->var.bits_per_pixel) { | |
517 | case 8: | |
518 | format = UDE_CFG_DST8; | |
519 | break; | |
520 | case 16: | |
521 | format = UDE_CFG_DST16; | |
522 | break; | |
523 | case 24: | |
524 | format = UDE_CFG_DST24; | |
525 | break; | |
526 | case 32: | |
527 | format = UDE_CFG_DST32; | |
528 | break; | |
529 | default: | |
530 | return -EINVAL; | |
531 | } | |
532 | ||
6b794743 | 533 | writel(info->fix.smem_start, UDE_FSA); |
ce443ab5 G |
534 | writel(info->var.yres, UDE_LS); |
535 | writel(get_line_length(info->var.xres, | |
536 | info->var.bits_per_pixel) >> 3, UDE_PS); | |
537 | /* >> 3 for hardware required. */ | |
538 | writel((hTotal << 16) | (info->var.xres), UDE_HAT); | |
539 | writel(((hTotal - 1) << 16) | (info->var.xres - 1), UDE_HBT); | |
540 | writel(((hSyncEnd - 1) << 16) | (hSyncStart - 1), UDE_HST); | |
541 | writel((vTotal << 16) | (info->var.yres), UDE_VAT); | |
542 | writel(((vTotal - 1) << 16) | (info->var.yres - 1), UDE_VBT); | |
543 | writel(((vSyncEnd - 1) << 16) | (vSyncStart - 1), UDE_VST); | |
544 | writel(UDE_CFG_GDEN_ENABLE | UDE_CFG_TIMEUP_ENABLE | |
545 | | format | 0xC0000001, UDE_CFG); | |
546 | ||
547 | return 0; | |
548 | } | |
549 | ||
550 | /* | |
551 | * Set a single color register. The values supplied are already | |
552 | * rounded down to the hardware's capabilities (according to the | |
553 | * entries in the var structure). Return != 0 for invalid regno. | |
554 | */ | |
555 | static int unifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, | |
556 | u_int transp, struct fb_info *info) | |
557 | { | |
558 | if (regno >= 256) /* no. of hw registers */ | |
559 | return 1; | |
560 | ||
561 | /* grayscale works only partially under directcolor */ | |
562 | if (info->var.grayscale) { | |
563 | /* grayscale = 0.30*R + 0.59*G + 0.11*B */ | |
564 | red = green = blue = | |
565 | (red * 77 + green * 151 + blue * 28) >> 8; | |
566 | } | |
567 | ||
568 | #define CNVT_TOHW(val, width) ((((val)<<(width))+0x7FFF-(val))>>16) | |
569 | switch (info->fix.visual) { | |
570 | case FB_VISUAL_TRUECOLOR: | |
571 | case FB_VISUAL_PSEUDOCOLOR: | |
572 | red = CNVT_TOHW(red, info->var.red.length); | |
573 | green = CNVT_TOHW(green, info->var.green.length); | |
574 | blue = CNVT_TOHW(blue, info->var.blue.length); | |
575 | transp = CNVT_TOHW(transp, info->var.transp.length); | |
576 | break; | |
577 | case FB_VISUAL_DIRECTCOLOR: | |
578 | red = CNVT_TOHW(red, 8); /* expect 8 bit DAC */ | |
579 | green = CNVT_TOHW(green, 8); | |
580 | blue = CNVT_TOHW(blue, 8); | |
581 | /* hey, there is bug in transp handling... */ | |
582 | transp = CNVT_TOHW(transp, 8); | |
583 | break; | |
584 | } | |
585 | #undef CNVT_TOHW | |
586 | /* Truecolor has hardware independent palette */ | |
587 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { | |
588 | u32 v; | |
589 | ||
590 | if (regno >= 16) | |
591 | return 1; | |
592 | ||
593 | v = (red << info->var.red.offset) | | |
594 | (green << info->var.green.offset) | | |
595 | (blue << info->var.blue.offset) | | |
596 | (transp << info->var.transp.offset); | |
597 | switch (info->var.bits_per_pixel) { | |
598 | case 8: | |
599 | break; | |
600 | case 16: | |
601 | case 24: | |
602 | case 32: | |
603 | ((u32 *) (info->pseudo_palette))[regno] = v; | |
604 | break; | |
605 | default: | |
606 | return 1; | |
607 | } | |
608 | return 0; | |
609 | } | |
610 | return 0; | |
611 | } | |
612 | ||
613 | /* | |
614 | * Pan or Wrap the Display | |
615 | * | |
616 | * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag | |
617 | */ | |
618 | static int unifb_pan_display(struct fb_var_screeninfo *var, | |
619 | struct fb_info *info) | |
620 | { | |
621 | if (var->vmode & FB_VMODE_YWRAP) { | |
622 | if (var->yoffset < 0 | |
623 | || var->yoffset >= info->var.yres_virtual | |
624 | || var->xoffset) | |
625 | return -EINVAL; | |
626 | } else { | |
465cb7e7 LP |
627 | if (var->xoffset + info->var.xres > info->var.xres_virtual || |
628 | var->yoffset + info->var.yres > info->var.yres_virtual) | |
ce443ab5 G |
629 | return -EINVAL; |
630 | } | |
631 | info->var.xoffset = var->xoffset; | |
632 | info->var.yoffset = var->yoffset; | |
633 | if (var->vmode & FB_VMODE_YWRAP) | |
634 | info->var.vmode |= FB_VMODE_YWRAP; | |
635 | else | |
636 | info->var.vmode &= ~FB_VMODE_YWRAP; | |
637 | return 0; | |
638 | } | |
639 | ||
640 | int unifb_mmap(struct fb_info *info, | |
641 | struct vm_area_struct *vma) | |
642 | { | |
643 | unsigned long size = vma->vm_end - vma->vm_start; | |
644 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; | |
645 | unsigned long pos = info->fix.smem_start + offset; | |
646 | ||
647 | if (offset + size > info->fix.smem_len) | |
648 | return -EINVAL; | |
649 | ||
650 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); | |
651 | ||
652 | if (io_remap_pfn_range(vma, vma->vm_start, pos >> PAGE_SHIFT, size, | |
653 | vma->vm_page_prot)) | |
654 | return -EAGAIN; | |
655 | ||
656 | vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ | |
657 | return 0; | |
658 | ||
659 | } | |
660 | ||
661 | static struct fb_ops unifb_ops = { | |
662 | .fb_read = fb_sys_read, | |
663 | .fb_write = fb_sys_write, | |
664 | .fb_check_var = unifb_check_var, | |
665 | .fb_set_par = unifb_set_par, | |
666 | .fb_setcolreg = unifb_setcolreg, | |
667 | .fb_pan_display = unifb_pan_display, | |
668 | .fb_fillrect = unifb_fillrect, | |
669 | .fb_copyarea = unifb_copyarea, | |
670 | .fb_imageblit = unifb_imageblit, | |
671 | .fb_mmap = unifb_mmap, | |
672 | }; | |
673 | ||
674 | /* | |
675 | * Initialisation | |
676 | */ | |
677 | static int unifb_probe(struct platform_device *dev) | |
678 | { | |
679 | struct fb_info *info; | |
680 | u32 unifb_regs[UNIFB_REGS_NUM]; | |
681 | int retval = -ENOMEM; | |
6b794743 GX |
682 | struct resource *iomem; |
683 | void *videomemory; | |
684 | ||
685 | videomemory = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP, | |
686 | get_order(UNIFB_MEMSIZE)); | |
687 | if (!videomemory) | |
688 | goto err; | |
689 | ||
690 | memset(videomemory, 0, UNIFB_MEMSIZE); | |
691 | ||
692 | unifb_fix.smem_start = virt_to_phys(videomemory); | |
693 | unifb_fix.smem_len = UNIFB_MEMSIZE; | |
694 | ||
695 | iomem = platform_get_resource(dev, IORESOURCE_MEM, 0); | |
696 | unifb_fix.mmio_start = iomem->start; | |
ce443ab5 G |
697 | |
698 | info = framebuffer_alloc(sizeof(u32)*256, &dev->dev); | |
699 | if (!info) | |
700 | goto err; | |
701 | ||
6b794743 | 702 | info->screen_base = (char __iomem *)videomemory; |
ce443ab5 G |
703 | info->fbops = &unifb_ops; |
704 | ||
705 | retval = fb_find_mode(&info->var, info, NULL, | |
706 | unifb_modes, 10, &unifb_modes[0], 16); | |
707 | ||
708 | if (!retval || (retval == 4)) | |
709 | info->var = unifb_default; | |
710 | ||
ce443ab5 G |
711 | info->fix = unifb_fix; |
712 | info->pseudo_palette = info->par; | |
713 | info->par = NULL; | |
714 | info->flags = FBINFO_FLAG_DEFAULT; | |
715 | #ifdef FB_ACCEL_PUV3_UNIGFX | |
716 | info->fix.accel = FB_ACCEL_PUV3_UNIGFX; | |
717 | #endif | |
718 | ||
719 | retval = fb_alloc_cmap(&info->cmap, 256, 0); | |
720 | if (retval < 0) | |
721 | goto err1; | |
722 | ||
723 | retval = register_framebuffer(info); | |
724 | if (retval < 0) | |
725 | goto err2; | |
726 | platform_set_drvdata(dev, info); | |
727 | platform_device_add_data(dev, unifb_regs, sizeof(u32) * UNIFB_REGS_NUM); | |
728 | ||
729 | printk(KERN_INFO | |
730 | "fb%d: Virtual frame buffer device, using %dM of video memory\n", | |
731 | info->node, UNIFB_MEMSIZE >> 20); | |
732 | return 0; | |
733 | err2: | |
734 | fb_dealloc_cmap(&info->cmap); | |
735 | err1: | |
736 | framebuffer_release(info); | |
737 | err: | |
738 | return retval; | |
739 | } | |
740 | ||
741 | static int unifb_remove(struct platform_device *dev) | |
742 | { | |
743 | struct fb_info *info = platform_get_drvdata(dev); | |
744 | ||
745 | if (info) { | |
746 | unregister_framebuffer(info); | |
747 | fb_dealloc_cmap(&info->cmap); | |
748 | framebuffer_release(info); | |
749 | } | |
750 | return 0; | |
751 | } | |
752 | ||
753 | #ifdef CONFIG_PM | |
754 | static int unifb_resume(struct platform_device *dev) | |
755 | { | |
756 | int rc = 0; | |
757 | u32 *unifb_regs = dev->dev.platform_data; | |
758 | ||
759 | if (dev->dev.power.power_state.event == PM_EVENT_ON) | |
760 | return 0; | |
761 | ||
762 | console_lock(); | |
763 | ||
764 | if (dev->dev.power.power_state.event == PM_EVENT_SUSPEND) { | |
765 | writel(unifb_regs[0], UDE_FSA); | |
766 | writel(unifb_regs[1], UDE_LS); | |
767 | writel(unifb_regs[2], UDE_PS); | |
768 | writel(unifb_regs[3], UDE_HAT); | |
769 | writel(unifb_regs[4], UDE_HBT); | |
770 | writel(unifb_regs[5], UDE_HST); | |
771 | writel(unifb_regs[6], UDE_VAT); | |
772 | writel(unifb_regs[7], UDE_VBT); | |
773 | writel(unifb_regs[8], UDE_VST); | |
774 | writel(unifb_regs[9], UDE_CFG); | |
775 | } | |
776 | dev->dev.power.power_state = PMSG_ON; | |
777 | ||
778 | console_unlock(); | |
779 | ||
780 | return rc; | |
781 | } | |
782 | ||
783 | static int unifb_suspend(struct platform_device *dev, pm_message_t mesg) | |
784 | { | |
785 | u32 *unifb_regs = dev->dev.platform_data; | |
786 | ||
787 | unifb_regs[0] = readl(UDE_FSA); | |
788 | unifb_regs[1] = readl(UDE_LS); | |
789 | unifb_regs[2] = readl(UDE_PS); | |
790 | unifb_regs[3] = readl(UDE_HAT); | |
791 | unifb_regs[4] = readl(UDE_HBT); | |
792 | unifb_regs[5] = readl(UDE_HST); | |
793 | unifb_regs[6] = readl(UDE_VAT); | |
794 | unifb_regs[7] = readl(UDE_VBT); | |
795 | unifb_regs[8] = readl(UDE_VST); | |
796 | unifb_regs[9] = readl(UDE_CFG); | |
797 | ||
798 | if (mesg.event == dev->dev.power.power_state.event) | |
799 | return 0; | |
800 | ||
801 | switch (mesg.event) { | |
802 | case PM_EVENT_FREEZE: /* about to take snapshot */ | |
803 | case PM_EVENT_PRETHAW: /* before restoring snapshot */ | |
804 | goto done; | |
805 | } | |
806 | ||
807 | console_lock(); | |
808 | ||
809 | /* do nothing... */ | |
810 | ||
811 | console_unlock(); | |
812 | ||
813 | done: | |
814 | dev->dev.power.power_state = mesg; | |
815 | ||
816 | return 0; | |
817 | } | |
818 | #else | |
819 | #define unifb_resume NULL | |
820 | #define unifb_suspend NULL | |
821 | #endif | |
822 | ||
823 | static struct platform_driver unifb_driver = { | |
824 | .probe = unifb_probe, | |
825 | .remove = unifb_remove, | |
826 | .resume = unifb_resume, | |
827 | .suspend = unifb_suspend, | |
828 | .driver = { | |
829 | .name = "PKUnity-v3-UNIGFX", | |
830 | }, | |
831 | }; | |
832 | ||
833 | static int __init unifb_init(void) | |
834 | { | |
835 | #ifndef MODULE | |
836 | if (fb_get_options("unifb", NULL)) | |
837 | return -ENODEV; | |
838 | #endif | |
839 | ||
840 | return platform_driver_register(&unifb_driver); | |
841 | } | |
842 | ||
843 | module_init(unifb_init); | |
844 | ||
845 | static void __exit unifb_exit(void) | |
846 | { | |
847 | platform_driver_unregister(&unifb_driver); | |
848 | } | |
849 | ||
850 | module_exit(unifb_exit); | |
851 | ||
852 | MODULE_LICENSE("GPL v2"); |