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1da177e4 LT |
1 | /* cg14.c: CGFOURTEEN frame buffer driver |
2 | * | |
50312ce9 | 3 | * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net) |
1da177e4 LT |
4 | * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz) |
5 | * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx) | |
6 | * | |
7 | * Driver layout based loosely on tgafb.c, see that file for credits. | |
8 | */ | |
9 | ||
10 | #include <linux/module.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/errno.h> | |
13 | #include <linux/string.h> | |
14 | #include <linux/slab.h> | |
15 | #include <linux/delay.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/fb.h> | |
18 | #include <linux/mm.h> | |
631a9dca | 19 | #include <linux/uaccess.h> |
6cd5a86b | 20 | #include <linux/of_device.h> |
1da177e4 LT |
21 | |
22 | #include <asm/io.h> | |
1da177e4 LT |
23 | #include <asm/fbio.h> |
24 | ||
25 | #include "sbuslib.h" | |
26 | ||
27 | /* | |
28 | * Local functions. | |
29 | */ | |
30 | ||
31 | static int cg14_setcolreg(unsigned, unsigned, unsigned, unsigned, | |
32 | unsigned, struct fb_info *); | |
33 | ||
216d526c | 34 | static int cg14_mmap(struct fb_info *, struct vm_area_struct *); |
67a6680d | 35 | static int cg14_ioctl(struct fb_info *, unsigned int, unsigned long); |
1da177e4 LT |
36 | static int cg14_pan_display(struct fb_var_screeninfo *, struct fb_info *); |
37 | ||
38 | /* | |
39 | * Frame buffer operations | |
40 | */ | |
41 | ||
42 | static struct fb_ops cg14_ops = { | |
43 | .owner = THIS_MODULE, | |
44 | .fb_setcolreg = cg14_setcolreg, | |
45 | .fb_pan_display = cg14_pan_display, | |
46 | .fb_fillrect = cfb_fillrect, | |
47 | .fb_copyarea = cfb_copyarea, | |
48 | .fb_imageblit = cfb_imageblit, | |
49 | .fb_mmap = cg14_mmap, | |
50 | .fb_ioctl = cg14_ioctl, | |
9ffb83bc CH |
51 | #ifdef CONFIG_COMPAT |
52 | .fb_compat_ioctl = sbusfb_compat_ioctl, | |
53 | #endif | |
1da177e4 LT |
54 | }; |
55 | ||
56 | #define CG14_MCR_INTENABLE_SHIFT 7 | |
57 | #define CG14_MCR_INTENABLE_MASK 0x80 | |
58 | #define CG14_MCR_VIDENABLE_SHIFT 6 | |
59 | #define CG14_MCR_VIDENABLE_MASK 0x40 | |
60 | #define CG14_MCR_PIXMODE_SHIFT 4 | |
61 | #define CG14_MCR_PIXMODE_MASK 0x30 | |
62 | #define CG14_MCR_TMR_SHIFT 2 | |
63 | #define CG14_MCR_TMR_MASK 0x0c | |
64 | #define CG14_MCR_TMENABLE_SHIFT 1 | |
65 | #define CG14_MCR_TMENABLE_MASK 0x02 | |
66 | #define CG14_MCR_RESET_SHIFT 0 | |
67 | #define CG14_MCR_RESET_MASK 0x01 | |
68 | #define CG14_REV_REVISION_SHIFT 4 | |
69 | #define CG14_REV_REVISION_MASK 0xf0 | |
70 | #define CG14_REV_IMPL_SHIFT 0 | |
71 | #define CG14_REV_IMPL_MASK 0x0f | |
72 | #define CG14_VBR_FRAMEBASE_SHIFT 12 | |
73 | #define CG14_VBR_FRAMEBASE_MASK 0x00fff000 | |
74 | #define CG14_VMCR1_SETUP_SHIFT 0 | |
75 | #define CG14_VMCR1_SETUP_MASK 0x000001ff | |
76 | #define CG14_VMCR1_VCONFIG_SHIFT 9 | |
77 | #define CG14_VMCR1_VCONFIG_MASK 0x00000e00 | |
78 | #define CG14_VMCR2_REFRESH_SHIFT 0 | |
79 | #define CG14_VMCR2_REFRESH_MASK 0x00000001 | |
80 | #define CG14_VMCR2_TESTROWCNT_SHIFT 1 | |
81 | #define CG14_VMCR2_TESTROWCNT_MASK 0x00000002 | |
82 | #define CG14_VMCR2_FBCONFIG_SHIFT 2 | |
83 | #define CG14_VMCR2_FBCONFIG_MASK 0x0000000c | |
84 | #define CG14_VCR_REFRESHREQ_SHIFT 0 | |
85 | #define CG14_VCR_REFRESHREQ_MASK 0x000003ff | |
86 | #define CG14_VCR1_REFRESHENA_SHIFT 10 | |
87 | #define CG14_VCR1_REFRESHENA_MASK 0x00000400 | |
88 | #define CG14_VCA_CAD_SHIFT 0 | |
89 | #define CG14_VCA_CAD_MASK 0x000003ff | |
90 | #define CG14_VCA_VERS_SHIFT 10 | |
91 | #define CG14_VCA_VERS_MASK 0x00000c00 | |
92 | #define CG14_VCA_RAMSPEED_SHIFT 12 | |
93 | #define CG14_VCA_RAMSPEED_MASK 0x00001000 | |
94 | #define CG14_VCA_8MB_SHIFT 13 | |
95 | #define CG14_VCA_8MB_MASK 0x00002000 | |
96 | ||
97 | #define CG14_MCR_PIXMODE_8 0 | |
98 | #define CG14_MCR_PIXMODE_16 2 | |
99 | #define CG14_MCR_PIXMODE_32 3 | |
100 | ||
101 | struct cg14_regs{ | |
50312ce9 DM |
102 | u8 mcr; /* Master Control Reg */ |
103 | u8 ppr; /* Packed Pixel Reg */ | |
104 | u8 tms[2]; /* Test Mode Status Regs */ | |
105 | u8 msr; /* Master Status Reg */ | |
106 | u8 fsr; /* Fault Status Reg */ | |
107 | u8 rev; /* Revision & Impl */ | |
108 | u8 ccr; /* Clock Control Reg */ | |
109 | u32 tmr; /* Test Mode Read Back */ | |
110 | u8 mod; /* Monitor Operation Data Reg */ | |
111 | u8 acr; /* Aux Control */ | |
1da177e4 | 112 | u8 xxx0[6]; |
50312ce9 DM |
113 | u16 hct; /* Hor Counter */ |
114 | u16 vct; /* Vert Counter */ | |
115 | u16 hbs; /* Hor Blank Start */ | |
116 | u16 hbc; /* Hor Blank Clear */ | |
117 | u16 hss; /* Hor Sync Start */ | |
118 | u16 hsc; /* Hor Sync Clear */ | |
119 | u16 csc; /* Composite Sync Clear */ | |
120 | u16 vbs; /* Vert Blank Start */ | |
121 | u16 vbc; /* Vert Blank Clear */ | |
122 | u16 vss; /* Vert Sync Start */ | |
123 | u16 vsc; /* Vert Sync Clear */ | |
124 | u16 xcs; | |
125 | u16 xcc; | |
126 | u16 fsa; /* Fault Status Address */ | |
127 | u16 adr; /* Address Registers */ | |
1da177e4 | 128 | u8 xxx1[0xce]; |
50312ce9 DM |
129 | u8 pcg[0x100]; /* Pixel Clock Generator */ |
130 | u32 vbr; /* Frame Base Row */ | |
131 | u32 vmcr; /* VBC Master Control */ | |
132 | u32 vcr; /* VBC refresh */ | |
133 | u32 vca; /* VBC Config */ | |
1da177e4 LT |
134 | }; |
135 | ||
136 | #define CG14_CCR_ENABLE 0x04 | |
137 | #define CG14_CCR_SELECT 0x02 /* HW/Full screen */ | |
138 | ||
139 | struct cg14_cursor { | |
50312ce9 DM |
140 | u32 cpl0[32]; /* Enable plane 0 */ |
141 | u32 cpl1[32]; /* Color selection plane */ | |
142 | u8 ccr; /* Cursor Control Reg */ | |
1da177e4 | 143 | u8 xxx0[3]; |
50312ce9 DM |
144 | u16 cursx; /* Cursor x,y position */ |
145 | u16 cursy; /* Cursor x,y position */ | |
146 | u32 color0; | |
147 | u32 color1; | |
1da177e4 | 148 | u32 xxx1[0x1bc]; |
50312ce9 DM |
149 | u32 cpl0i[32]; /* Enable plane 0 autoinc */ |
150 | u32 cpl1i[32]; /* Color selection autoinc */ | |
1da177e4 LT |
151 | }; |
152 | ||
153 | struct cg14_dac { | |
50312ce9 | 154 | u8 addr; /* Address Register */ |
1da177e4 | 155 | u8 xxx0[255]; |
50312ce9 | 156 | u8 glut; /* Gamma table */ |
1da177e4 | 157 | u8 xxx1[255]; |
50312ce9 | 158 | u8 select; /* Register Select */ |
1da177e4 | 159 | u8 xxx2[255]; |
50312ce9 | 160 | u8 mode; /* Mode Register */ |
1da177e4 LT |
161 | }; |
162 | ||
163 | struct cg14_xlut{ | |
50312ce9 DM |
164 | u8 x_xlut [256]; |
165 | u8 x_xlutd [256]; | |
1da177e4 | 166 | u8 xxx0[0x600]; |
50312ce9 DM |
167 | u8 x_xlut_inc [256]; |
168 | u8 x_xlutd_inc [256]; | |
1da177e4 LT |
169 | }; |
170 | ||
171 | /* Color look up table (clut) */ | |
172 | /* Each one of these arrays hold the color lookup table (for 256 | |
173 | * colors) for each MDI page (I assume then there should be 4 MDI | |
174 | * pages, I still wonder what they are. I have seen NeXTStep split | |
175 | * the screen in four parts, while operating in 24 bits mode. Each | |
176 | * integer holds 4 values: alpha value (transparency channel, thanks | |
177 | * go to John Stone (johns@umr.edu) from OpenBSD), red, green and blue | |
178 | * | |
179 | * I currently use the clut instead of the Xlut | |
180 | */ | |
181 | struct cg14_clut { | |
182 | u32 c_clut [256]; | |
183 | u32 c_clutd [256]; /* i wonder what the 'd' is for */ | |
184 | u32 c_clut_inc [256]; | |
185 | u32 c_clutd_inc [256]; | |
186 | }; | |
187 | ||
188 | #define CG14_MMAP_ENTRIES 16 | |
189 | ||
190 | struct cg14_par { | |
191 | spinlock_t lock; | |
192 | struct cg14_regs __iomem *regs; | |
193 | struct cg14_clut __iomem *clut; | |
194 | struct cg14_cursor __iomem *cursor; | |
195 | ||
196 | u32 flags; | |
197 | #define CG14_FLAG_BLANKED 0x00000001 | |
198 | ||
1da177e4 | 199 | unsigned long iospace; |
1da177e4 LT |
200 | |
201 | struct sbus_mmap_map mmap_map[CG14_MMAP_ENTRIES]; | |
202 | ||
203 | int mode; | |
204 | int ramsize; | |
1da177e4 LT |
205 | }; |
206 | ||
207 | static void __cg14_reset(struct cg14_par *par) | |
208 | { | |
209 | struct cg14_regs __iomem *regs = par->regs; | |
210 | u8 val; | |
211 | ||
212 | val = sbus_readb(®s->mcr); | |
213 | val &= ~(CG14_MCR_PIXMODE_MASK); | |
214 | sbus_writeb(val, ®s->mcr); | |
215 | } | |
216 | ||
217 | static int cg14_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) | |
218 | { | |
219 | struct cg14_par *par = (struct cg14_par *) info->par; | |
220 | unsigned long flags; | |
221 | ||
222 | /* We just use this to catch switches out of | |
223 | * graphics mode. | |
224 | */ | |
225 | spin_lock_irqsave(&par->lock, flags); | |
226 | __cg14_reset(par); | |
227 | spin_unlock_irqrestore(&par->lock, flags); | |
228 | ||
229 | if (var->xoffset || var->yoffset || var->vmode) | |
230 | return -EINVAL; | |
231 | return 0; | |
232 | } | |
233 | ||
234 | /** | |
235 | * cg14_setcolreg - Optional function. Sets a color register. | |
236 | * @regno: boolean, 0 copy local, 1 get_user() function | |
237 | * @red: frame buffer colormap structure | |
238 | * @green: The green value which can be up to 16 bits wide | |
239 | * @blue: The blue value which can be up to 16 bits wide. | |
240 | * @transp: If supported the alpha value which can be up to 16 bits wide. | |
241 | * @info: frame buffer info structure | |
242 | */ | |
243 | static int cg14_setcolreg(unsigned regno, | |
244 | unsigned red, unsigned green, unsigned blue, | |
245 | unsigned transp, struct fb_info *info) | |
246 | { | |
247 | struct cg14_par *par = (struct cg14_par *) info->par; | |
248 | struct cg14_clut __iomem *clut = par->clut; | |
249 | unsigned long flags; | |
250 | u32 val; | |
251 | ||
252 | if (regno >= 256) | |
253 | return 1; | |
254 | ||
255 | red >>= 8; | |
256 | green >>= 8; | |
257 | blue >>= 8; | |
258 | val = (red | (green << 8) | (blue << 16)); | |
259 | ||
260 | spin_lock_irqsave(&par->lock, flags); | |
261 | sbus_writel(val, &clut->c_clut[regno]); | |
262 | spin_unlock_irqrestore(&par->lock, flags); | |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
216d526c | 267 | static int cg14_mmap(struct fb_info *info, struct vm_area_struct *vma) |
1da177e4 LT |
268 | { |
269 | struct cg14_par *par = (struct cg14_par *) info->par; | |
270 | ||
271 | return sbusfb_mmap_helper(par->mmap_map, | |
de4dc48e | 272 | info->fix.smem_start, info->fix.smem_len, |
1da177e4 LT |
273 | par->iospace, vma); |
274 | } | |
275 | ||
67a6680d | 276 | static int cg14_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) |
1da177e4 LT |
277 | { |
278 | struct cg14_par *par = (struct cg14_par *) info->par; | |
279 | struct cg14_regs __iomem *regs = par->regs; | |
280 | struct mdi_cfginfo kmdi, __user *mdii; | |
281 | unsigned long flags; | |
282 | int cur_mode, mode, ret = 0; | |
283 | ||
284 | switch (cmd) { | |
285 | case MDI_RESET: | |
286 | spin_lock_irqsave(&par->lock, flags); | |
287 | __cg14_reset(par); | |
288 | spin_unlock_irqrestore(&par->lock, flags); | |
289 | break; | |
290 | ||
291 | case MDI_GET_CFGINFO: | |
292 | memset(&kmdi, 0, sizeof(kmdi)); | |
293 | ||
294 | spin_lock_irqsave(&par->lock, flags); | |
295 | kmdi.mdi_type = FBTYPE_MDICOLOR; | |
296 | kmdi.mdi_height = info->var.yres; | |
297 | kmdi.mdi_width = info->var.xres; | |
298 | kmdi.mdi_mode = par->mode; | |
299 | kmdi.mdi_pixfreq = 72; /* FIXME */ | |
300 | kmdi.mdi_size = par->ramsize; | |
301 | spin_unlock_irqrestore(&par->lock, flags); | |
302 | ||
303 | mdii = (struct mdi_cfginfo __user *) arg; | |
304 | if (copy_to_user(mdii, &kmdi, sizeof(kmdi))) | |
305 | ret = -EFAULT; | |
306 | break; | |
307 | ||
308 | case MDI_SET_PIXELMODE: | |
309 | if (get_user(mode, (int __user *) arg)) { | |
310 | ret = -EFAULT; | |
311 | break; | |
312 | } | |
313 | ||
314 | spin_lock_irqsave(&par->lock, flags); | |
315 | cur_mode = sbus_readb(®s->mcr); | |
316 | cur_mode &= ~CG14_MCR_PIXMODE_MASK; | |
317 | switch(mode) { | |
318 | case MDI_32_PIX: | |
319 | cur_mode |= (CG14_MCR_PIXMODE_32 << | |
320 | CG14_MCR_PIXMODE_SHIFT); | |
321 | break; | |
322 | ||
323 | case MDI_16_PIX: | |
324 | cur_mode |= (CG14_MCR_PIXMODE_16 << | |
325 | CG14_MCR_PIXMODE_SHIFT); | |
326 | break; | |
327 | ||
328 | case MDI_8_PIX: | |
329 | break; | |
330 | ||
331 | default: | |
332 | ret = -ENOSYS; | |
333 | break; | |
334 | }; | |
335 | if (!ret) { | |
336 | sbus_writeb(cur_mode, ®s->mcr); | |
337 | par->mode = mode; | |
338 | } | |
339 | spin_unlock_irqrestore(&par->lock, flags); | |
340 | break; | |
341 | ||
342 | default: | |
343 | ret = sbusfb_ioctl_helper(cmd, arg, info, | |
de4dc48e KH |
344 | FBTYPE_MDICOLOR, 8, |
345 | info->fix.smem_len); | |
1da177e4 LT |
346 | break; |
347 | }; | |
348 | ||
349 | return ret; | |
350 | } | |
351 | ||
352 | /* | |
353 | * Initialisation | |
354 | */ | |
355 | ||
8fdab476 RR |
356 | static void __devinit cg14_init_fix(struct fb_info *info, int linebytes, |
357 | struct device_node *dp) | |
1da177e4 | 358 | { |
50312ce9 | 359 | const char *name = dp->name; |
1da177e4 LT |
360 | |
361 | strlcpy(info->fix.id, name, sizeof(info->fix.id)); | |
362 | ||
363 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
364 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
365 | ||
366 | info->fix.line_length = linebytes; | |
367 | ||
368 | info->fix.accel = FB_ACCEL_SUN_CG14; | |
369 | } | |
370 | ||
8fdab476 | 371 | static struct sbus_mmap_map __cg14_mmap_map[CG14_MMAP_ENTRIES] __devinitdata = { |
1da177e4 LT |
372 | { |
373 | .voff = CG14_REGS, | |
374 | .poff = 0x80000000, | |
375 | .size = 0x1000 | |
376 | }, | |
377 | { | |
378 | .voff = CG14_XLUT, | |
379 | .poff = 0x80003000, | |
380 | .size = 0x1000 | |
381 | }, | |
382 | { | |
383 | .voff = CG14_CLUT1, | |
384 | .poff = 0x80004000, | |
385 | .size = 0x1000 | |
386 | }, | |
387 | { | |
388 | .voff = CG14_CLUT2, | |
389 | .poff = 0x80005000, | |
390 | .size = 0x1000 | |
391 | }, | |
392 | { | |
393 | .voff = CG14_CLUT3, | |
394 | .poff = 0x80006000, | |
395 | .size = 0x1000 | |
396 | }, | |
397 | { | |
398 | .voff = CG3_MMAP_OFFSET - 0x7000, | |
399 | .poff = 0x80000000, | |
400 | .size = 0x7000 | |
401 | }, | |
402 | { | |
403 | .voff = CG3_MMAP_OFFSET, | |
404 | .poff = 0x00000000, | |
405 | .size = SBUS_MMAP_FBSIZE(1) | |
406 | }, | |
407 | { | |
408 | .voff = MDI_CURSOR_MAP, | |
409 | .poff = 0x80001000, | |
410 | .size = 0x1000 | |
411 | }, | |
412 | { | |
413 | .voff = MDI_CHUNKY_BGR_MAP, | |
414 | .poff = 0x01000000, | |
415 | .size = 0x400000 | |
416 | }, | |
417 | { | |
418 | .voff = MDI_PLANAR_X16_MAP, | |
419 | .poff = 0x02000000, | |
420 | .size = 0x200000 | |
421 | }, | |
422 | { | |
423 | .voff = MDI_PLANAR_C16_MAP, | |
424 | .poff = 0x02800000, | |
425 | .size = 0x200000 | |
426 | }, | |
427 | { | |
428 | .voff = MDI_PLANAR_X32_MAP, | |
429 | .poff = 0x03000000, | |
430 | .size = 0x100000 | |
431 | }, | |
432 | { | |
433 | .voff = MDI_PLANAR_B32_MAP, | |
434 | .poff = 0x03400000, | |
435 | .size = 0x100000 | |
436 | }, | |
437 | { | |
438 | .voff = MDI_PLANAR_G32_MAP, | |
439 | .poff = 0x03800000, | |
440 | .size = 0x100000 | |
441 | }, | |
442 | { | |
443 | .voff = MDI_PLANAR_R32_MAP, | |
444 | .poff = 0x03c00000, | |
445 | .size = 0x100000 | |
446 | }, | |
447 | { .size = 0 } | |
448 | }; | |
449 | ||
c7f439b9 DM |
450 | static void cg14_unmap_regs(struct of_device *op, struct fb_info *info, |
451 | struct cg14_par *par) | |
1da177e4 | 452 | { |
c7f439b9 | 453 | if (par->regs) |
e3a411a3 | 454 | of_iounmap(&op->resource[0], |
c7f439b9 DM |
455 | par->regs, sizeof(struct cg14_regs)); |
456 | if (par->clut) | |
e3a411a3 | 457 | of_iounmap(&op->resource[0], |
c7f439b9 DM |
458 | par->clut, sizeof(struct cg14_clut)); |
459 | if (par->cursor) | |
e3a411a3 | 460 | of_iounmap(&op->resource[0], |
c7f439b9 DM |
461 | par->cursor, sizeof(struct cg14_cursor)); |
462 | if (info->screen_base) | |
e3a411a3 | 463 | of_iounmap(&op->resource[1], |
de4dc48e | 464 | info->screen_base, info->fix.smem_len); |
50312ce9 | 465 | } |
1da177e4 | 466 | |
c7f439b9 | 467 | static int __devinit cg14_probe(struct of_device *op, const struct of_device_id *match) |
50312ce9 DM |
468 | { |
469 | struct device_node *dp = op->node; | |
c7f439b9 DM |
470 | struct fb_info *info; |
471 | struct cg14_par *par; | |
50312ce9 | 472 | int is_8mb, linebytes, i, err; |
1da177e4 | 473 | |
c7f439b9 DM |
474 | info = framebuffer_alloc(sizeof(struct cg14_par), &op->dev); |
475 | ||
476 | err = -ENOMEM; | |
477 | if (!info) | |
478 | goto out_err; | |
479 | par = info->par; | |
1da177e4 | 480 | |
c7f439b9 | 481 | spin_lock_init(&par->lock); |
1da177e4 | 482 | |
6cd5a86b | 483 | sbusfb_fill_var(&info->var, dp, 8); |
c7f439b9 DM |
484 | info->var.red.length = 8; |
485 | info->var.green.length = 8; | |
486 | info->var.blue.length = 8; | |
1da177e4 | 487 | |
50312ce9 | 488 | linebytes = of_getintprop_default(dp, "linebytes", |
c7f439b9 | 489 | info->var.xres); |
de4dc48e | 490 | info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres); |
1da177e4 | 491 | |
50312ce9 DM |
492 | if (!strcmp(dp->parent->name, "sbus") || |
493 | !strcmp(dp->parent->name, "sbi")) { | |
de4dc48e | 494 | info->fix.smem_start = op->resource[0].start; |
c7f439b9 | 495 | par->iospace = op->resource[0].flags & IORESOURCE_BITS; |
1da177e4 | 496 | } else { |
de4dc48e | 497 | info->fix.smem_start = op->resource[1].start; |
c7f439b9 | 498 | par->iospace = op->resource[0].flags & IORESOURCE_BITS; |
1da177e4 LT |
499 | } |
500 | ||
c7f439b9 DM |
501 | par->regs = of_ioremap(&op->resource[0], 0, |
502 | sizeof(struct cg14_regs), "cg14 regs"); | |
503 | par->clut = of_ioremap(&op->resource[0], CG14_CLUT1, | |
504 | sizeof(struct cg14_clut), "cg14 clut"); | |
505 | par->cursor = of_ioremap(&op->resource[0], CG14_CURSORREGS, | |
506 | sizeof(struct cg14_cursor), "cg14 cursor"); | |
1da177e4 | 507 | |
c7f439b9 | 508 | info->screen_base = of_ioremap(&op->resource[1], 0, |
de4dc48e | 509 | info->fix.smem_len, "cg14 ram"); |
1da177e4 | 510 | |
c7f439b9 DM |
511 | if (!par->regs || !par->clut || !par->cursor || !info->screen_base) |
512 | goto out_unmap_regs; | |
50312ce9 DM |
513 | |
514 | is_8mb = (((op->resource[1].end - op->resource[1].start) + 1) == | |
515 | (8 * 1024 * 1024)); | |
516 | ||
c7f439b9 | 517 | BUILD_BUG_ON(sizeof(par->mmap_map) != sizeof(__cg14_mmap_map)); |
1da177e4 | 518 | |
c7f439b9 | 519 | memcpy(&par->mmap_map, &__cg14_mmap_map, sizeof(par->mmap_map)); |
50312ce9 | 520 | |
1da177e4 | 521 | for (i = 0; i < CG14_MMAP_ENTRIES; i++) { |
c7f439b9 | 522 | struct sbus_mmap_map *map = &par->mmap_map[i]; |
1da177e4 LT |
523 | |
524 | if (!map->size) | |
525 | break; | |
526 | if (map->poff & 0x80000000) | |
50312ce9 DM |
527 | map->poff = (map->poff & 0x7fffffff) + |
528 | (op->resource[0].start - | |
529 | op->resource[1].start); | |
1da177e4 LT |
530 | if (is_8mb && |
531 | map->size >= 0x100000 && | |
532 | map->size <= 0x400000) | |
533 | map->size *= 2; | |
534 | } | |
535 | ||
c7f439b9 DM |
536 | par->mode = MDI_8_PIX; |
537 | par->ramsize = (is_8mb ? 0x800000 : 0x400000); | |
1da177e4 | 538 | |
c7f439b9 DM |
539 | info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN; |
540 | info->fbops = &cg14_ops; | |
1da177e4 | 541 | |
c7f439b9 | 542 | __cg14_reset(par); |
1da177e4 | 543 | |
c7f439b9 DM |
544 | if (fb_alloc_cmap(&info->cmap, 256, 0)) |
545 | goto out_unmap_regs; | |
1da177e4 | 546 | |
c7f439b9 | 547 | fb_set_cmap(&info->cmap, info); |
1da177e4 | 548 | |
c7f439b9 DM |
549 | cg14_init_fix(info, linebytes, dp); |
550 | ||
551 | err = register_framebuffer(info); | |
552 | if (err < 0) | |
553 | goto out_dealloc_cmap; | |
1da177e4 | 554 | |
c7f439b9 | 555 | dev_set_drvdata(&op->dev, info); |
1da177e4 | 556 | |
194f1a68 | 557 | printk(KERN_INFO "%s: cgfourteen at %lx:%lx, %dMB\n", |
50312ce9 | 558 | dp->full_name, |
de4dc48e | 559 | par->iospace, info->fix.smem_start, |
c7f439b9 | 560 | par->ramsize >> 20); |
1da177e4 | 561 | |
50312ce9 | 562 | return 0; |
1da177e4 | 563 | |
c7f439b9 DM |
564 | out_dealloc_cmap: |
565 | fb_dealloc_cmap(&info->cmap); | |
566 | ||
567 | out_unmap_regs: | |
568 | cg14_unmap_regs(op, info, par); | |
1da177e4 | 569 | |
c7f439b9 DM |
570 | out_err: |
571 | return err; | |
50312ce9 | 572 | } |
1da177e4 | 573 | |
e3a411a3 | 574 | static int __devexit cg14_remove(struct of_device *op) |
50312ce9 | 575 | { |
c7f439b9 DM |
576 | struct fb_info *info = dev_get_drvdata(&op->dev); |
577 | struct cg14_par *par = info->par; | |
50312ce9 | 578 | |
c7f439b9 DM |
579 | unregister_framebuffer(info); |
580 | fb_dealloc_cmap(&info->cmap); | |
50312ce9 | 581 | |
c7f439b9 | 582 | cg14_unmap_regs(op, info, par); |
50312ce9 | 583 | |
c7f439b9 | 584 | framebuffer_release(info); |
50312ce9 | 585 | |
e3a411a3 | 586 | dev_set_drvdata(&op->dev, NULL); |
1da177e4 LT |
587 | |
588 | return 0; | |
589 | } | |
590 | ||
fd098316 | 591 | static const struct of_device_id cg14_match[] = { |
50312ce9 DM |
592 | { |
593 | .name = "cgfourteen", | |
594 | }, | |
595 | {}, | |
596 | }; | |
597 | MODULE_DEVICE_TABLE(of, cg14_match); | |
1da177e4 | 598 | |
50312ce9 DM |
599 | static struct of_platform_driver cg14_driver = { |
600 | .name = "cg14", | |
601 | .match_table = cg14_match, | |
602 | .probe = cg14_probe, | |
603 | .remove = __devexit_p(cg14_remove), | |
604 | }; | |
1da177e4 | 605 | |
54433000 | 606 | static int __init cg14_init(void) |
50312ce9 DM |
607 | { |
608 | if (fb_get_options("cg14fb", NULL)) | |
609 | return -ENODEV; | |
610 | ||
611 | return of_register_driver(&cg14_driver, &of_bus_type); | |
1da177e4 LT |
612 | } |
613 | ||
54433000 | 614 | static void __exit cg14_exit(void) |
1da177e4 | 615 | { |
50312ce9 | 616 | of_unregister_driver(&cg14_driver); |
1da177e4 LT |
617 | } |
618 | ||
619 | module_init(cg14_init); | |
1da177e4 | 620 | module_exit(cg14_exit); |
1da177e4 LT |
621 | |
622 | MODULE_DESCRIPTION("framebuffer driver for CGfourteen chipsets"); | |
50312ce9 DM |
623 | MODULE_AUTHOR("David S. Miller <davem@davemloft.net>"); |
624 | MODULE_VERSION("2.0"); | |
1da177e4 | 625 | MODULE_LICENSE("GPL"); |