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Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
[linux-2.6/mini2440.git] / drivers / video / carminefb.c
blobc7ff3c1a266a3611c2081e71e56bbb29264eaa0b
1 /*
2 * Frame buffer driver for the Carmine GPU.
3 *
4 * The driver configures the GPU as follows
5 * - FB0 is display 0 with unique memory area
6 * - FB1 is display 1 with unique memory area
7 * - both display use 32 bit colors
8 */
9 #include <linux/delay.h>
10 #include <linux/errno.h>
11 #include <linux/fb.h>
12 #include <linux/interrupt.h>
13 #include <linux/pci.h>
14
15 #include "carminefb.h"
16 #include "carminefb_regs.h"
17
18 #if !defined(__LITTLE_ENDIAN) && !defined(__BIG_ENDIAN)
19 #error "The endianness of the target host has not been defined."
20 #endif
21
22 /*
23 * The initial video mode can be supplied via two different ways:
24 * - as a string that is passed to fb_find_mode() (module option fb_mode_str)
25 * - as an integer that picks the video mode from carmine_modedb[] (module
26 * option fb_mode)
27 *
28 * If nothing is used than the initial video mode will be the
29 * CARMINEFB_DEFAULT_VIDEO_MODE member of the carmine_modedb[].
30 */
31 #define CARMINEFB_DEFAULT_VIDEO_MODE 1
32
33 static unsigned int fb_mode = CARMINEFB_DEFAULT_VIDEO_MODE;
34 module_param(fb_mode, uint, 444);
35 MODULE_PARM_DESC(fb_mode, "Initial video mode as integer.");
36
37 static char *fb_mode_str;
38 module_param(fb_mode_str, charp, 444);
39 MODULE_PARM_DESC(fb_mode_str, "Initial video mode in characters.");
40
41 /*
42 * Carminefb displays:
43 * 0b000 None
44 * 0b001 Display 0
45 * 0b010 Display 1
46 */
47 static int fb_displays = CARMINE_USE_DISPLAY0 | CARMINE_USE_DISPLAY1;
48 module_param(fb_displays, int, 444);
49 MODULE_PARM_DESC(fb_displays, "Bit mode, which displays are used");
50
51 struct carmine_hw {
52 void __iomem *v_regs;
53 void __iomem *screen_mem;
54 struct fb_info *fb[MAX_DISPLAY];
55 };
56
57 struct carmine_resolution {
58 u32 htp;
59 u32 hsp;
60 u32 hsw;
61 u32 hdp;
62 u32 vtr;
63 u32 vsp;
64 u32 vsw;
65 u32 vdp;
66 u32 disp_mode;
67 };
68
69 struct carmine_fb {
70 void __iomem *display_reg;
71 void __iomem *screen_base;
72 u32 smem_offset;
73 u32 cur_mode;
74 u32 new_mode;
75 struct carmine_resolution *res;
76 u32 pseudo_palette[16];
77 };
78
79 static struct fb_fix_screeninfo carminefb_fix __devinitdata = {
80 .id = "Carmine",
81 .type = FB_TYPE_PACKED_PIXELS,
82 .visual = FB_VISUAL_TRUECOLOR,
83 .accel = FB_ACCEL_NONE,
84 };
85
86 static const struct fb_videomode carmine_modedb[] = {
87 {
88 .name = "640x480",
89 .xres = 640,
90 .yres = 480,
91 }, {
92 .name = "800x600",
93 .xres = 800,
94 .yres = 600,
95 },
96 };
97
98 static struct carmine_resolution car_modes[] = {
99 {
100 /* 640x480 */
101 .htp = 800,
102 .hsp = 672,
103 .hsw = 96,
104 .hdp = 640,
105 .vtr = 525,
106 .vsp = 490,
107 .vsw = 2,
108 .vdp = 480,
109 .disp_mode = 0x1400,
110 },
111 {
112 /* 800x600 */
113 .htp = 1060,
114 .hsp = 864,
115 .hsw = 72,
116 .hdp = 800,
117 .vtr = 628,
118 .vsp = 601,
119 .vsw = 2,
120 .vdp = 600,
121 .disp_mode = 0x0d00,
122 }
123 };
124
125 static int carmine_find_mode(const struct fb_var_screeninfo *var)
126 {
127 int i;
128
129 for (i = 0; i < ARRAY_SIZE(car_modes); i++)
130 if (car_modes[i].hdp == var->xres &&
131 car_modes[i].vdp == var->yres)
132 return i;
133 return -EINVAL;
134 }
135
136 static void c_set_disp_reg(const struct carmine_fb *par,
137 u32 offset, u32 val)
138 {
139 writel(val, par->display_reg + offset);
140 }
141
142 static u32 c_get_disp_reg(const struct carmine_fb *par,
143 u32 offset)
144 {
145 return readl(par->display_reg + offset);
146 }
147
148 static void c_set_hw_reg(const struct carmine_hw *hw,
149 u32 offset, u32 val)
150 {
151 writel(val, hw->v_regs + offset);
152 }
153
154 static u32 c_get_hw_reg(const struct carmine_hw *hw,
155 u32 offset)
156 {
157 return readl(hw->v_regs + offset);
158 }
159
160 static int carmine_setcolreg(unsigned regno, unsigned red, unsigned green,
161 unsigned blue, unsigned transp, struct fb_info *info)
162 {
163 if (regno >= 16)
164 return 1;
165
166 red >>= 8;
167 green >>= 8;
168 blue >>= 8;
169 transp >>= 8;
170
171 ((__be32 *)info->pseudo_palette)[regno] = cpu_to_be32(transp << 24 |
172 red << 0 | green << 8 | blue << 16);
173 return 0;
174 }
175
176 static int carmine_check_var(struct fb_var_screeninfo *var,
177 struct fb_info *info)
178 {
179 int ret;
180
181 ret = carmine_find_mode(var);
182 if (ret < 0)
183 return ret;
184
185 if (var->grayscale || var->rotate || var->nonstd)
186 return -EINVAL;
187
188 var->xres_virtual = var->xres;
189 var->yres_virtual = var->yres;
190
191 var->bits_per_pixel = 32;
192
193 #ifdef __BIG_ENDIAN
194 var->transp.offset = 24;
195 var->red.offset = 0;
196 var->green.offset = 8;
197 var->blue.offset = 16;
198 #else
199 var->transp.offset = 24;
200 var->red.offset = 16;
201 var->green.offset = 8;
202 var->blue.offset = 0;
203 #endif
204
205 var->red.length = 8;
206 var->green.length = 8;
207 var->blue.length = 8;
208 var->transp.length = 8;
209
210 var->red.msb_right = 0;
211 var->green.msb_right = 0;
212 var->blue.msb_right = 0;
213 var->transp.msb_right = 0;
214 return 0;
215 }
216
217 static void carmine_init_display_param(struct carmine_fb *par)
218 {
219 u32 width;
220 u32 height;
221 u32 param;
222 u32 window_size;
223 u32 soffset = par->smem_offset;
224
225 c_set_disp_reg(par, CARMINE_DISP_REG_C_TRANS, 0);
226 c_set_disp_reg(par, CARMINE_DISP_REG_MLMR_TRANS, 0);
227 c_set_disp_reg(par, CARMINE_DISP_REG_CURSOR_MODE,
228 CARMINE_CURSOR0_PRIORITY_MASK |
229 CARMINE_CURSOR1_PRIORITY_MASK |
230 CARMINE_CURSOR_CUTZ_MASK);
231
232 /* Set default cursor position */
233 c_set_disp_reg(par, CARMINE_DISP_REG_CUR1_POS, 0 << 16 | 0);
234 c_set_disp_reg(par, CARMINE_DISP_REG_CUR2_POS, 0 << 16 | 0);
235
236 /* Set default display mode */
237 c_set_disp_reg(par, CARMINE_DISP_REG_L0_EXT_MODE, CARMINE_WINDOW_MODE |
238 CARMINE_EXT_CMODE_DIRECT24_RGBA);
239 c_set_disp_reg(par, CARMINE_DISP_REG_L1_EXT_MODE,
240 CARMINE_EXT_CMODE_DIRECT24_RGBA);
241 c_set_disp_reg(par, CARMINE_DISP_REG_L2_EXT_MODE, CARMINE_EXTEND_MODE |
242 CARMINE_EXT_CMODE_DIRECT24_RGBA);
243 c_set_disp_reg(par, CARMINE_DISP_REG_L3_EXT_MODE, CARMINE_EXTEND_MODE |
244 CARMINE_EXT_CMODE_DIRECT24_RGBA);
245 c_set_disp_reg(par, CARMINE_DISP_REG_L4_EXT_MODE, CARMINE_EXTEND_MODE |
246 CARMINE_EXT_CMODE_DIRECT24_RGBA);
247 c_set_disp_reg(par, CARMINE_DISP_REG_L5_EXT_MODE, CARMINE_EXTEND_MODE |
248 CARMINE_EXT_CMODE_DIRECT24_RGBA);
249 c_set_disp_reg(par, CARMINE_DISP_REG_L6_EXT_MODE, CARMINE_EXTEND_MODE |
250 CARMINE_EXT_CMODE_DIRECT24_RGBA);
251 c_set_disp_reg(par, CARMINE_DISP_REG_L7_EXT_MODE, CARMINE_EXTEND_MODE |
252 CARMINE_EXT_CMODE_DIRECT24_RGBA);
253
254 /* Set default frame size to layer mode register */
255 width = par->res->hdp * 4 / CARMINE_DISP_WIDTH_UNIT;
256 width = width << CARMINE_DISP_WIDTH_SHIFT;
257
258 height = par->res->vdp - 1;
259 param = width | height;
260
261 c_set_disp_reg(par, CARMINE_DISP_REG_L0_MODE_W_H, param);
262 c_set_disp_reg(par, CARMINE_DISP_REG_L1_WIDTH, width);
263 c_set_disp_reg(par, CARMINE_DISP_REG_L2_MODE_W_H, param);
264 c_set_disp_reg(par, CARMINE_DISP_REG_L3_MODE_W_H, param);
265 c_set_disp_reg(par, CARMINE_DISP_REG_L4_MODE_W_H, param);
266 c_set_disp_reg(par, CARMINE_DISP_REG_L5_MODE_W_H, param);
267 c_set_disp_reg(par, CARMINE_DISP_REG_L6_MODE_W_H, param);
268 c_set_disp_reg(par, CARMINE_DISP_REG_L7_MODE_W_H, param);
269
270 /* Set default pos and size */
271 window_size = (par->res->vdp - 1) << CARMINE_DISP_WIN_H_SHIFT;
272 window_size |= par->res->hdp;
273
274 c_set_disp_reg(par, CARMINE_DISP_REG_L0_WIN_POS, 0);
275 c_set_disp_reg(par, CARMINE_DISP_REG_L0_WIN_SIZE, window_size);
276 c_set_disp_reg(par, CARMINE_DISP_REG_L1_WIN_POS, 0);
277 c_set_disp_reg(par, CARMINE_DISP_REG_L1_WIN_SIZE, window_size);
278 c_set_disp_reg(par, CARMINE_DISP_REG_L2_WIN_POS, 0);
279 c_set_disp_reg(par, CARMINE_DISP_REG_L2_WIN_SIZE, window_size);
280 c_set_disp_reg(par, CARMINE_DISP_REG_L3_WIN_POS, 0);
281 c_set_disp_reg(par, CARMINE_DISP_REG_L3_WIN_SIZE, window_size);
282 c_set_disp_reg(par, CARMINE_DISP_REG_L4_WIN_POS, 0);
283 c_set_disp_reg(par, CARMINE_DISP_REG_L4_WIN_SIZE, window_size);
284 c_set_disp_reg(par, CARMINE_DISP_REG_L5_WIN_POS, 0);
285 c_set_disp_reg(par, CARMINE_DISP_REG_L5_WIN_SIZE, window_size);
286 c_set_disp_reg(par, CARMINE_DISP_REG_L6_WIN_POS, 0);
287 c_set_disp_reg(par, CARMINE_DISP_REG_L6_WIN_SIZE, window_size);
288 c_set_disp_reg(par, CARMINE_DISP_REG_L7_WIN_POS, 0);
289 c_set_disp_reg(par, CARMINE_DISP_REG_L7_WIN_SIZE, window_size);
290
291 /* Set default origin address */
292 c_set_disp_reg(par, CARMINE_DISP_REG_L0_ORG_ADR, soffset);
293 c_set_disp_reg(par, CARMINE_DISP_REG_L1_ORG_ADR, soffset);
294 c_set_disp_reg(par, CARMINE_DISP_REG_L2_ORG_ADR1, soffset);
295 c_set_disp_reg(par, CARMINE_DISP_REG_L3_ORG_ADR1, soffset);
296 c_set_disp_reg(par, CARMINE_DISP_REG_L4_ORG_ADR1, soffset);
297 c_set_disp_reg(par, CARMINE_DISP_REG_L5_ORG_ADR1, soffset);
298 c_set_disp_reg(par, CARMINE_DISP_REG_L6_ORG_ADR1, soffset);
299 c_set_disp_reg(par, CARMINE_DISP_REG_L7_ORG_ADR1, soffset);
300
301 /* Set default display address */
302 c_set_disp_reg(par, CARMINE_DISP_REG_L0_DISP_ADR, soffset);
303 c_set_disp_reg(par, CARMINE_DISP_REG_L2_DISP_ADR1, soffset);
304 c_set_disp_reg(par, CARMINE_DISP_REG_L3_DISP_ADR1, soffset);
305 c_set_disp_reg(par, CARMINE_DISP_REG_L4_DISP_ADR1, soffset);
306 c_set_disp_reg(par, CARMINE_DISP_REG_L5_DISP_ADR1, soffset);
307 c_set_disp_reg(par, CARMINE_DISP_REG_L6_DISP_ADR0, soffset);
308 c_set_disp_reg(par, CARMINE_DISP_REG_L7_DISP_ADR0, soffset);
309
310 /* Set default display position */
311 c_set_disp_reg(par, CARMINE_DISP_REG_L0_DISP_POS, 0);
312 c_set_disp_reg(par, CARMINE_DISP_REG_L2_DISP_POS, 0);
313 c_set_disp_reg(par, CARMINE_DISP_REG_L3_DISP_POS, 0);
314 c_set_disp_reg(par, CARMINE_DISP_REG_L4_DISP_POS, 0);
315 c_set_disp_reg(par, CARMINE_DISP_REG_L5_DISP_POS, 0);
316 c_set_disp_reg(par, CARMINE_DISP_REG_L6_DISP_POS, 0);
317 c_set_disp_reg(par, CARMINE_DISP_REG_L7_DISP_POS, 0);
318
319 /* Set default blend mode */
320 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L0, 0);
321 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L1, 0);
322 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L2, 0);
323 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L3, 0);
324 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L4, 0);
325 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L5, 0);
326 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L6, 0);
327 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L7, 0);
328
329 /* default transparency mode */
330 c_set_disp_reg(par, CARMINE_DISP_REG_L0_TRANS, 0);
331 c_set_disp_reg(par, CARMINE_DISP_REG_L1_TRANS, 0);
332 c_set_disp_reg(par, CARMINE_DISP_REG_L2_TRANS, 0);
333 c_set_disp_reg(par, CARMINE_DISP_REG_L3_TRANS, 0);
334 c_set_disp_reg(par, CARMINE_DISP_REG_L4_TRANS, 0);
335 c_set_disp_reg(par, CARMINE_DISP_REG_L5_TRANS, 0);
336 c_set_disp_reg(par, CARMINE_DISP_REG_L6_TRANS, 0);
337 c_set_disp_reg(par, CARMINE_DISP_REG_L7_TRANS, 0);
338
339 /* Set default read skip parameter */
340 c_set_disp_reg(par, CARMINE_DISP_REG_L0RM, 0);
341 c_set_disp_reg(par, CARMINE_DISP_REG_L2RM, 0);
342 c_set_disp_reg(par, CARMINE_DISP_REG_L3RM, 0);
343 c_set_disp_reg(par, CARMINE_DISP_REG_L4RM, 0);
344 c_set_disp_reg(par, CARMINE_DISP_REG_L5RM, 0);
345 c_set_disp_reg(par, CARMINE_DISP_REG_L6RM, 0);
346 c_set_disp_reg(par, CARMINE_DISP_REG_L7RM, 0);
347
348 c_set_disp_reg(par, CARMINE_DISP_REG_L0PX, 0);
349 c_set_disp_reg(par, CARMINE_DISP_REG_L2PX, 0);
350 c_set_disp_reg(par, CARMINE_DISP_REG_L3PX, 0);
351 c_set_disp_reg(par, CARMINE_DISP_REG_L4PX, 0);
352 c_set_disp_reg(par, CARMINE_DISP_REG_L5PX, 0);
353 c_set_disp_reg(par, CARMINE_DISP_REG_L6PX, 0);
354 c_set_disp_reg(par, CARMINE_DISP_REG_L7PX, 0);
355
356 c_set_disp_reg(par, CARMINE_DISP_REG_L0PY, 0);
357 c_set_disp_reg(par, CARMINE_DISP_REG_L2PY, 0);
358 c_set_disp_reg(par, CARMINE_DISP_REG_L3PY, 0);
359 c_set_disp_reg(par, CARMINE_DISP_REG_L4PY, 0);
360 c_set_disp_reg(par, CARMINE_DISP_REG_L5PY, 0);
361 c_set_disp_reg(par, CARMINE_DISP_REG_L6PY, 0);
362 c_set_disp_reg(par, CARMINE_DISP_REG_L7PY, 0);
363 }
364
365 static void set_display_parameters(struct carmine_fb *par)
366 {
367 u32 mode;
368 u32 hdp, vdp, htp, hsp, hsw, vtr, vsp, vsw;
369
370 /*
371 * display timing. Parameters are decreased by one because hardware
372 * spec is 0 to (n - 1)
373 * */
374 hdp = par->res->hdp - 1;
375 vdp = par->res->vdp - 1;
376 htp = par->res->htp - 1;
377 hsp = par->res->hsp - 1;
378 hsw = par->res->hsw - 1;
379 vtr = par->res->vtr - 1;
380 vsp = par->res->vsp - 1;
381 vsw = par->res->vsw - 1;
382
383 c_set_disp_reg(par, CARMINE_DISP_REG_H_TOTAL,
384 htp << CARMINE_DISP_HTP_SHIFT);
385 c_set_disp_reg(par, CARMINE_DISP_REG_H_PERIOD,
386 (hdp << CARMINE_DISP_HDB_SHIFT) | hdp);
387 c_set_disp_reg(par, CARMINE_DISP_REG_V_H_W_H_POS,
388 (vsw << CARMINE_DISP_VSW_SHIFT) |
389 (hsw << CARMINE_DISP_HSW_SHIFT) |
390 (hsp));
391 c_set_disp_reg(par, CARMINE_DISP_REG_V_TOTAL,
392 vtr << CARMINE_DISP_VTR_SHIFT);
393 c_set_disp_reg(par, CARMINE_DISP_REG_V_PERIOD_POS,
394 (vdp << CARMINE_DISP_VDP_SHIFT) | vsp);
395
396 /* clock */
397 mode = c_get_disp_reg(par, CARMINE_DISP_REG_DCM1);
398 mode = (mode & ~CARMINE_DISP_DCM_MASK) |
399 (par->res->disp_mode & CARMINE_DISP_DCM_MASK);
400 /* enable video output and layer 0 */
401 mode |= CARMINE_DEN | CARMINE_L0E;
402 c_set_disp_reg(par, CARMINE_DISP_REG_DCM1, mode);
403 }
404
405 static int carmine_set_par(struct fb_info *info)
406 {
407 struct carmine_fb *par = info->par;
408 int ret;
409
410 ret = carmine_find_mode(&info->var);
411 if (ret < 0)
412 return ret;
413
414 par->new_mode = ret;
415 if (par->cur_mode != par->new_mode) {
416
417 par->cur_mode = par->new_mode;
418 par->res = &car_modes[par->new_mode];
419
420 carmine_init_display_param(par);
421 set_display_parameters(par);
422 }
423
424 info->fix.line_length = info->var.xres * info->var.bits_per_pixel / 8;
425 return 0;
426 }
427
428 static int init_hardware(struct carmine_hw *hw)
429 {
430 u32 flags;
431 u32 loops;
432 u32 ret;
433
434 /* Initalize Carmine */
435 /* Sets internal clock */
436 c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_CLOCK_ENABLE,
437 CARMINE_DFLT_IP_CLOCK_ENABLE);
438
439 /* Video signal output is turned off */
440 c_set_hw_reg(hw, CARMINE_DISP0_REG + CARMINE_DISP_REG_DCM1, 0);
441 c_set_hw_reg(hw, CARMINE_DISP1_REG + CARMINE_DISP_REG_DCM1, 0);
442
443 /* Software reset */
444 c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_SOFTWARE_RESET, 1);
445 c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_SOFTWARE_RESET, 0);
446
447 /* I/O mode settings */
448 flags = CARMINE_DFLT_IP_DCTL_IO_CONT1 << 16 |
449 CARMINE_DFLT_IP_DCTL_IO_CONT0;
450 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_IOCONT1_IOCONT0,
451 flags);
452
453 /* DRAM initial sequence */
454 flags = CARMINE_DFLT_IP_DCTL_MODE << 16 | CARMINE_DFLT_IP_DCTL_ADD;
455 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_MODE_ADD,
456 flags);
457
458 flags = CARMINE_DFLT_IP_DCTL_SET_TIME1 << 16 |
459 CARMINE_DFLT_IP_DCTL_EMODE;
460 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_SETTIME1_EMODE,
461 flags);
462
463 flags = CARMINE_DFLT_IP_DCTL_REFRESH << 16 |
464 CARMINE_DFLT_IP_DCTL_SET_TIME2;
465 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_REFRESH_SETTIME2,
466 flags);
467
468 flags = CARMINE_DFLT_IP_DCTL_RESERVE2 << 16 |
469 CARMINE_DFLT_IP_DCTL_FIFO_DEPTH;
470 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_RSV2_RSV1, flags);
471
472 flags = CARMINE_DFLT_IP_DCTL_DDRIF2 << 16 | CARMINE_DFLT_IP_DCTL_DDRIF1;
473 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_DDRIF2_DDRIF1,
474 flags);
475
476 flags = CARMINE_DFLT_IP_DCTL_RESERVE0 << 16 |
477 CARMINE_DFLT_IP_DCTL_STATES;
478 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_RSV0_STATES,
479 flags);
480
481 /* Executes DLL reset */
482 if (CARMINE_DCTL_DLL_RESET) {
483 for (loops = 0; loops < CARMINE_DCTL_INIT_WAIT_LIMIT; loops++) {
484
485 ret = c_get_hw_reg(hw, CARMINE_DCTL_REG +
486 CARMINE_DCTL_REG_RSV0_STATES);
487 ret &= CARMINE_DCTL_REG_STATES_MASK;
488 if (!ret)
489 break;
490
491 mdelay(CARMINE_DCTL_INIT_WAIT_INTERVAL);
492 }
493
494 if (loops >= CARMINE_DCTL_INIT_WAIT_LIMIT) {
495 printk(KERN_ERR "DRAM init failed\n");
496 return -EIO;
497 }
498 }
499
500 flags = CARMINE_DFLT_IP_DCTL_MODE_AFT_RST << 16 |
501 CARMINE_DFLT_IP_DCTL_ADD;
502 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_MODE_ADD, flags);
503
504 flags = CARMINE_DFLT_IP_DCTL_RESERVE0 << 16 |
505 CARMINE_DFLT_IP_DCTL_STATES_AFT_RST;
506 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_RSV0_STATES,
507 flags);
508
509 /* Initialize the write back register */
510 c_set_hw_reg(hw, CARMINE_WB_REG + CARMINE_WB_REG_WBM,
511 CARMINE_WB_REG_WBM_DEFAULT);
512
513 /* Initialize the Kottos registers */
514 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_VRINTM, 0);
515 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_VRERRM, 0);
516
517 /* Set DC offsets */
518 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_PX, 0);
519 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_PY, 0);
520 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_LX, 0);
521 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_LY, 0);
522 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_TX, 0);
523 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_TY, 0);
524 return 0;
525 }
526
527 static struct fb_ops carminefb_ops = {
528 .owner = THIS_MODULE,
529 .fb_fillrect = cfb_fillrect,
530 .fb_copyarea = cfb_copyarea,
531 .fb_imageblit = cfb_imageblit,
532
533 .fb_check_var = carmine_check_var,
534 .fb_set_par = carmine_set_par,
535 .fb_setcolreg = carmine_setcolreg,
536 };
537
538 static int __devinit alloc_carmine_fb(void __iomem *regs, void __iomem *smem_base,
539 int smem_offset, struct device *device, struct fb_info **rinfo)
540 {
541 int ret;
542 struct fb_info *info;
543 struct carmine_fb *par;
544
545 info = framebuffer_alloc(sizeof *par, device);
546 if (!info)
547 return -ENOMEM;
548
549 par = info->par;
550 par->display_reg = regs;
551 par->smem_offset = smem_offset;
552
553 info->screen_base = smem_base + smem_offset;
554 info->screen_size = CARMINE_DISPLAY_MEM;
555 info->fbops = &carminefb_ops;
556
557 info->fix = carminefb_fix;
558 info->pseudo_palette = par->pseudo_palette;
559 info->flags = FBINFO_DEFAULT;
560
561 ret = fb_alloc_cmap(&info->cmap, 256, 1);
562 if (ret < 0)
563 goto err_free_fb;
564
565 if (fb_mode > ARRAY_SIZE(carmine_modedb))
566 fb_mode = CARMINEFB_DEFAULT_VIDEO_MODE;
567
568 par->cur_mode = par->new_mode = ~0;
569
570 ret = fb_find_mode(&info->var, info, fb_mode_str, carmine_modedb,
571 ARRAY_SIZE(carmine_modedb),
572 &carmine_modedb[fb_mode], 32);
573 if (!ret || ret == 4) {
574 ret = -EINVAL;
575 goto err_dealloc_cmap;
576 }
577
578 fb_videomode_to_modelist(carmine_modedb, ARRAY_SIZE(carmine_modedb),
579 &info->modelist);
580
581 ret = register_framebuffer(info);
582 if (ret < 0)
583 goto err_dealloc_cmap;
584
585 printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
586 info->fix.id);
587
588 *rinfo = info;
589 return 0;
590
591 err_dealloc_cmap:
592 fb_dealloc_cmap(&info->cmap);
593 err_free_fb:
594 framebuffer_release(info);
595 return ret;
596 }
597
598 static void cleanup_fb_device(struct fb_info *info)
599 {
600 if (info) {
601 unregister_framebuffer(info);
602 fb_dealloc_cmap(&info->cmap);
603 framebuffer_release(info);
604 }
605 }
606
607 static int __devinit carminefb_probe(struct pci_dev *dev,
608 const struct pci_device_id *ent)
609 {
610 struct carmine_hw *hw;
611 struct device *device = &dev->dev;
612 struct fb_info *info;
613 int ret;
614
615 ret = pci_enable_device(dev);
616 if (ret)
617 return ret;
618
619 ret = -ENOMEM;
620 hw = kzalloc(sizeof *hw, GFP_KERNEL);
621 if (!hw)
622 goto err_enable_pci;
623
624 carminefb_fix.mmio_start = pci_resource_start(dev, CARMINE_CONFIG_BAR);
625 carminefb_fix.mmio_len = pci_resource_len(dev, CARMINE_CONFIG_BAR);
626
627 if (!request_mem_region(carminefb_fix.mmio_start,
628 carminefb_fix.mmio_len,
629 "carminefb regbase")) {
630 printk(KERN_ERR "carminefb: Can't reserve regbase.\n");
631 ret = -EBUSY;
632 goto err_free_hw;
633 }
634 hw->v_regs = ioremap_nocache(carminefb_fix.mmio_start,
635 carminefb_fix.mmio_len);
636 if (!hw->v_regs) {
637 printk(KERN_ERR "carminefb: Can't remap %s register.\n",
638 carminefb_fix.id);
639 goto err_free_reg_mmio;
640 }
641
642 carminefb_fix.smem_start = pci_resource_start(dev, CARMINE_MEMORY_BAR);
643 carminefb_fix.smem_len = pci_resource_len(dev, CARMINE_MEMORY_BAR);
644
645 /* The memory area tends to be very large (256 MiB). Remap only what
646 * is required for that largest resolution to avoid remaps at run
647 * time
648 */
649 if (carminefb_fix.smem_len > CARMINE_TOTAL_DIPLAY_MEM)
650 carminefb_fix.smem_len = CARMINE_TOTAL_DIPLAY_MEM;
651
652 else if (carminefb_fix.smem_len < CARMINE_TOTAL_DIPLAY_MEM) {
653 printk(KERN_ERR "carminefb: Memory bar is only %d bytes, %d "
654 "are required.", carminefb_fix.smem_len,
655 CARMINE_TOTAL_DIPLAY_MEM);
656 goto err_free_reg_mmio;
657 }
658
659 if (!request_mem_region(carminefb_fix.smem_start,
660 carminefb_fix.smem_len, "carminefb smem")) {
661 printk(KERN_ERR "carminefb: Can't reserve smem.\n");
662 goto err_unmap_vregs;
663 }
664
665 hw->screen_mem = ioremap_nocache(carminefb_fix.smem_start,
666 carminefb_fix.smem_len);
667 if (!hw->screen_mem) {
668 printk(KERN_ERR "carmine: Can't ioremap smem area.\n");
669 release_mem_region(carminefb_fix.smem_start,
670 carminefb_fix.smem_len);
671 goto err_reg_smem;
672 }
673
674 ret = init_hardware(hw);
675 if (ret)
676 goto err_unmap_screen;
677
678 info = NULL;
679 if (fb_displays & CARMINE_USE_DISPLAY0) {
680 ret = alloc_carmine_fb(hw->v_regs + CARMINE_DISP0_REG,
681 hw->screen_mem, CARMINE_DISPLAY_MEM * 0,
682 device, &info);
683 if (ret)
684 goto err_deinit_hw;
685 }
686
687 hw->fb[0] = info;
688
689 info = NULL;
690 if (fb_displays & CARMINE_USE_DISPLAY1) {
691 ret = alloc_carmine_fb(hw->v_regs + CARMINE_DISP1_REG,
692 hw->screen_mem, CARMINE_DISPLAY_MEM * 1,
693 device, &info);
694 if (ret)
695 goto err_cleanup_fb0;
696 }
697
698 hw->fb[1] = info;
699 info = NULL;
700
701 pci_set_drvdata(dev, hw);
702 return 0;
703
704 err_cleanup_fb0:
705 cleanup_fb_device(hw->fb[0]);
706 err_deinit_hw:
707 /* disable clock, etc */
708 c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_CLOCK_ENABLE, 0);
709 err_unmap_screen:
710 iounmap(hw->screen_mem);
711 err_reg_smem:
712 release_mem_region(carminefb_fix.mmio_start, carminefb_fix.mmio_len);
713 err_unmap_vregs:
714 iounmap(hw->v_regs);
715 err_free_reg_mmio:
716 release_mem_region(carminefb_fix.mmio_start, carminefb_fix.mmio_len);
717 err_free_hw:
718 kfree(hw);
719 err_enable_pci:
720 pci_disable_device(dev);
721 return ret;
722 }
723
724 static void __devexit carminefb_remove(struct pci_dev *dev)
725 {
726 struct carmine_hw *hw = pci_get_drvdata(dev);
727 struct fb_fix_screeninfo fix;
728 int i;
729
730 /* in case we use only fb1 and not fb1 */
731 if (hw->fb[0])
732 fix = hw->fb[0]->fix;
733 else
734 fix = hw->fb[1]->fix;
735
736 /* deactivate display(s) and switch clocks */
737 c_set_hw_reg(hw, CARMINE_DISP0_REG + CARMINE_DISP_REG_DCM1, 0);
738 c_set_hw_reg(hw, CARMINE_DISP1_REG + CARMINE_DISP_REG_DCM1, 0);
739 c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_CLOCK_ENABLE, 0);
740
741 for (i = 0; i < MAX_DISPLAY; i++)
742 cleanup_fb_device(hw->fb[i]);
743
744 iounmap(hw->screen_mem);
745 release_mem_region(fix.smem_start, fix.smem_len);
746 iounmap(hw->v_regs);
747 release_mem_region(fix.mmio_start, fix.mmio_len);
748
749 pci_set_drvdata(dev, NULL);
750 pci_disable_device(dev);
751 kfree(hw);
752 }
753
754 #define PCI_VENDOR_ID_FUJITU_LIMITED 0x10cf
755 static struct pci_device_id carmine_devices[] __devinitdata = {
756 {
757 PCI_DEVICE(PCI_VENDOR_ID_FUJITU_LIMITED, 0x202b)},
758 {0, 0, 0, 0, 0, 0, 0}
759 };
760
761 MODULE_DEVICE_TABLE(pci, carmine_devices);
762
763 static struct pci_driver carmine_pci_driver = {
764 .name = "carminefb",
765 .id_table = carmine_devices,
766 .probe = carminefb_probe,
767 .remove = __devexit_p(carminefb_remove),
768 };
769
770 static int __init carminefb_init(void)
771 {
772 if (!(fb_displays &
773 (CARMINE_USE_DISPLAY0 | CARMINE_USE_DISPLAY1))) {
774 printk(KERN_ERR "If you disable both displays than you don't "
775 "need the driver at all\n");
776 return -EINVAL;
777 }
778 return pci_register_driver(&carmine_pci_driver);
779 }
780 module_init(carminefb_init);
781
782 static void __exit carminefb_cleanup(void)
783 {
784 pci_unregister_driver(&carmine_pci_driver);
785 }
786 module_exit(carminefb_cleanup);
787
788 MODULE_AUTHOR("Sebastian Siewior <bigeasy@linutronix.de>");
789 MODULE_DESCRIPTION("Framebuffer driver for Fujitsu Carmine based devices");
790 MODULE_LICENSE("GPL v2");
Support for the Chinese Samsung S3C2440 based development boards