2 * Frame buffer driver for the Carmine GPU.
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
9 #include <linux/delay.h>
10 #include <linux/errno.h>
12 #include <linux/interrupt.h>
13 #include <linux/pci.h>
14 #include <linux/slab.h>
16 #include "carminefb.h"
17 #include "carminefb_regs.h"
19 #if !defined(__LITTLE_ENDIAN) && !defined(__BIG_ENDIAN)
20 #error "The endianness of the target host has not been defined."
24 * The initial video mode can be supplied via two different ways:
25 * - as a string that is passed to fb_find_mode() (module option fb_mode_str)
26 * - as an integer that picks the video mode from carmine_modedb[] (module
29 * If nothing is used than the initial video mode will be the
30 * CARMINEFB_DEFAULT_VIDEO_MODE member of the carmine_modedb[].
32 #define CARMINEFB_DEFAULT_VIDEO_MODE 1
34 static unsigned int fb_mode = CARMINEFB_DEFAULT_VIDEO_MODE;
35 module_param(fb_mode, uint, 444);
36 MODULE_PARM_DESC(fb_mode, "Initial video mode as integer.");
38 static char *fb_mode_str;
39 module_param(fb_mode_str, charp, 444);
40 MODULE_PARM_DESC(fb_mode_str, "Initial video mode in characters.");
48 static int fb_displays = CARMINE_USE_DISPLAY0 | CARMINE_USE_DISPLAY1;
49 module_param(fb_displays, int, 444);
50 MODULE_PARM_DESC(fb_displays, "Bit mode, which displays are used");
54 void __iomem *screen_mem;
55 struct fb_info *fb[MAX_DISPLAY];
58 struct carmine_resolution {
71 void __iomem *display_reg;
72 void __iomem *screen_base;
76 struct carmine_resolution *res;
77 u32 pseudo_palette[16];
80 static struct fb_fix_screeninfo carminefb_fix __devinitdata = {
82 .type = FB_TYPE_PACKED_PIXELS,
83 .visual = FB_VISUAL_TRUECOLOR,
84 .accel = FB_ACCEL_NONE,
87 static const struct fb_videomode carmine_modedb[] = {
99 static struct carmine_resolution car_modes[] = {
126 static int carmine_find_mode(const struct fb_var_screeninfo *var)
130 for (i = 0; i < ARRAY_SIZE(car_modes); i++)
131 if (car_modes[i].hdp == var->xres &&
132 car_modes[i].vdp == var->yres)
137 static void c_set_disp_reg(const struct carmine_fb *par,
140 writel(val, par->display_reg + offset);
143 static u32 c_get_disp_reg(const struct carmine_fb *par,
146 return readl(par->display_reg + offset);
149 static void c_set_hw_reg(const struct carmine_hw *hw,
152 writel(val, hw->v_regs + offset);
155 static u32 c_get_hw_reg(const struct carmine_hw *hw,
158 return readl(hw->v_regs + offset);
161 static int carmine_setcolreg(unsigned regno, unsigned red, unsigned green,
162 unsigned blue, unsigned transp, struct fb_info *info)
172 ((__be32 *)info->pseudo_palette)[regno] = cpu_to_be32(transp << 24 |
173 red << 0 | green << 8 | blue << 16);
177 static int carmine_check_var(struct fb_var_screeninfo *var,
178 struct fb_info *info)
182 ret = carmine_find_mode(var);
186 if (var->grayscale || var->rotate || var->nonstd)
189 var->xres_virtual = var->xres;
190 var->yres_virtual = var->yres;
192 var->bits_per_pixel = 32;
195 var->transp.offset = 24;
197 var->green.offset = 8;
198 var->blue.offset = 16;
200 var->transp.offset = 24;
201 var->red.offset = 16;
202 var->green.offset = 8;
203 var->blue.offset = 0;
207 var->green.length = 8;
208 var->blue.length = 8;
209 var->transp.length = 8;
211 var->red.msb_right = 0;
212 var->green.msb_right = 0;
213 var->blue.msb_right = 0;
214 var->transp.msb_right = 0;
218 static void carmine_init_display_param(struct carmine_fb *par)
224 u32 soffset = par->smem_offset;
226 c_set_disp_reg(par, CARMINE_DISP_REG_C_TRANS, 0);
227 c_set_disp_reg(par, CARMINE_DISP_REG_MLMR_TRANS, 0);
228 c_set_disp_reg(par, CARMINE_DISP_REG_CURSOR_MODE,
229 CARMINE_CURSOR0_PRIORITY_MASK |
230 CARMINE_CURSOR1_PRIORITY_MASK |
231 CARMINE_CURSOR_CUTZ_MASK);
233 /* Set default cursor position */
234 c_set_disp_reg(par, CARMINE_DISP_REG_CUR1_POS, 0 << 16 | 0);
235 c_set_disp_reg(par, CARMINE_DISP_REG_CUR2_POS, 0 << 16 | 0);
237 /* Set default display mode */
238 c_set_disp_reg(par, CARMINE_DISP_REG_L0_EXT_MODE, CARMINE_WINDOW_MODE |
239 CARMINE_EXT_CMODE_DIRECT24_RGBA);
240 c_set_disp_reg(par, CARMINE_DISP_REG_L1_EXT_MODE,
241 CARMINE_EXT_CMODE_DIRECT24_RGBA);
242 c_set_disp_reg(par, CARMINE_DISP_REG_L2_EXT_MODE, CARMINE_EXTEND_MODE |
243 CARMINE_EXT_CMODE_DIRECT24_RGBA);
244 c_set_disp_reg(par, CARMINE_DISP_REG_L3_EXT_MODE, CARMINE_EXTEND_MODE |
245 CARMINE_EXT_CMODE_DIRECT24_RGBA);
246 c_set_disp_reg(par, CARMINE_DISP_REG_L4_EXT_MODE, CARMINE_EXTEND_MODE |
247 CARMINE_EXT_CMODE_DIRECT24_RGBA);
248 c_set_disp_reg(par, CARMINE_DISP_REG_L5_EXT_MODE, CARMINE_EXTEND_MODE |
249 CARMINE_EXT_CMODE_DIRECT24_RGBA);
250 c_set_disp_reg(par, CARMINE_DISP_REG_L6_EXT_MODE, CARMINE_EXTEND_MODE |
251 CARMINE_EXT_CMODE_DIRECT24_RGBA);
252 c_set_disp_reg(par, CARMINE_DISP_REG_L7_EXT_MODE, CARMINE_EXTEND_MODE |
253 CARMINE_EXT_CMODE_DIRECT24_RGBA);
255 /* Set default frame size to layer mode register */
256 width = par->res->hdp * 4 / CARMINE_DISP_WIDTH_UNIT;
257 width = width << CARMINE_DISP_WIDTH_SHIFT;
259 height = par->res->vdp - 1;
260 param = width | height;
262 c_set_disp_reg(par, CARMINE_DISP_REG_L0_MODE_W_H, param);
263 c_set_disp_reg(par, CARMINE_DISP_REG_L1_WIDTH, width);
264 c_set_disp_reg(par, CARMINE_DISP_REG_L2_MODE_W_H, param);
265 c_set_disp_reg(par, CARMINE_DISP_REG_L3_MODE_W_H, param);
266 c_set_disp_reg(par, CARMINE_DISP_REG_L4_MODE_W_H, param);
267 c_set_disp_reg(par, CARMINE_DISP_REG_L5_MODE_W_H, param);
268 c_set_disp_reg(par, CARMINE_DISP_REG_L6_MODE_W_H, param);
269 c_set_disp_reg(par, CARMINE_DISP_REG_L7_MODE_W_H, param);
271 /* Set default pos and size */
272 window_size = (par->res->vdp - 1) << CARMINE_DISP_WIN_H_SHIFT;
273 window_size |= par->res->hdp;
275 c_set_disp_reg(par, CARMINE_DISP_REG_L0_WIN_POS, 0);
276 c_set_disp_reg(par, CARMINE_DISP_REG_L0_WIN_SIZE, window_size);
277 c_set_disp_reg(par, CARMINE_DISP_REG_L1_WIN_POS, 0);
278 c_set_disp_reg(par, CARMINE_DISP_REG_L1_WIN_SIZE, window_size);
279 c_set_disp_reg(par, CARMINE_DISP_REG_L2_WIN_POS, 0);
280 c_set_disp_reg(par, CARMINE_DISP_REG_L2_WIN_SIZE, window_size);
281 c_set_disp_reg(par, CARMINE_DISP_REG_L3_WIN_POS, 0);
282 c_set_disp_reg(par, CARMINE_DISP_REG_L3_WIN_SIZE, window_size);
283 c_set_disp_reg(par, CARMINE_DISP_REG_L4_WIN_POS, 0);
284 c_set_disp_reg(par, CARMINE_DISP_REG_L4_WIN_SIZE, window_size);
285 c_set_disp_reg(par, CARMINE_DISP_REG_L5_WIN_POS, 0);
286 c_set_disp_reg(par, CARMINE_DISP_REG_L5_WIN_SIZE, window_size);
287 c_set_disp_reg(par, CARMINE_DISP_REG_L6_WIN_POS, 0);
288 c_set_disp_reg(par, CARMINE_DISP_REG_L6_WIN_SIZE, window_size);
289 c_set_disp_reg(par, CARMINE_DISP_REG_L7_WIN_POS, 0);
290 c_set_disp_reg(par, CARMINE_DISP_REG_L7_WIN_SIZE, window_size);
292 /* Set default origin address */
293 c_set_disp_reg(par, CARMINE_DISP_REG_L0_ORG_ADR, soffset);
294 c_set_disp_reg(par, CARMINE_DISP_REG_L1_ORG_ADR, soffset);
295 c_set_disp_reg(par, CARMINE_DISP_REG_L2_ORG_ADR1, soffset);
296 c_set_disp_reg(par, CARMINE_DISP_REG_L3_ORG_ADR1, soffset);
297 c_set_disp_reg(par, CARMINE_DISP_REG_L4_ORG_ADR1, soffset);
298 c_set_disp_reg(par, CARMINE_DISP_REG_L5_ORG_ADR1, soffset);
299 c_set_disp_reg(par, CARMINE_DISP_REG_L6_ORG_ADR1, soffset);
300 c_set_disp_reg(par, CARMINE_DISP_REG_L7_ORG_ADR1, soffset);
302 /* Set default display address */
303 c_set_disp_reg(par, CARMINE_DISP_REG_L0_DISP_ADR, soffset);
304 c_set_disp_reg(par, CARMINE_DISP_REG_L2_DISP_ADR1, soffset);
305 c_set_disp_reg(par, CARMINE_DISP_REG_L3_DISP_ADR1, soffset);
306 c_set_disp_reg(par, CARMINE_DISP_REG_L4_DISP_ADR1, soffset);
307 c_set_disp_reg(par, CARMINE_DISP_REG_L5_DISP_ADR1, soffset);
308 c_set_disp_reg(par, CARMINE_DISP_REG_L6_DISP_ADR0, soffset);
309 c_set_disp_reg(par, CARMINE_DISP_REG_L7_DISP_ADR0, soffset);
311 /* Set default display position */
312 c_set_disp_reg(par, CARMINE_DISP_REG_L0_DISP_POS, 0);
313 c_set_disp_reg(par, CARMINE_DISP_REG_L2_DISP_POS, 0);
314 c_set_disp_reg(par, CARMINE_DISP_REG_L3_DISP_POS, 0);
315 c_set_disp_reg(par, CARMINE_DISP_REG_L4_DISP_POS, 0);
316 c_set_disp_reg(par, CARMINE_DISP_REG_L5_DISP_POS, 0);
317 c_set_disp_reg(par, CARMINE_DISP_REG_L6_DISP_POS, 0);
318 c_set_disp_reg(par, CARMINE_DISP_REG_L7_DISP_POS, 0);
320 /* Set default blend mode */
321 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L0, 0);
322 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L1, 0);
323 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L2, 0);
324 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L3, 0);
325 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L4, 0);
326 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L5, 0);
327 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L6, 0);
328 c_set_disp_reg(par, CARMINE_DISP_REG_BLEND_MODE_L7, 0);
330 /* default transparency mode */
331 c_set_disp_reg(par, CARMINE_DISP_REG_L0_TRANS, 0);
332 c_set_disp_reg(par, CARMINE_DISP_REG_L1_TRANS, 0);
333 c_set_disp_reg(par, CARMINE_DISP_REG_L2_TRANS, 0);
334 c_set_disp_reg(par, CARMINE_DISP_REG_L3_TRANS, 0);
335 c_set_disp_reg(par, CARMINE_DISP_REG_L4_TRANS, 0);
336 c_set_disp_reg(par, CARMINE_DISP_REG_L5_TRANS, 0);
337 c_set_disp_reg(par, CARMINE_DISP_REG_L6_TRANS, 0);
338 c_set_disp_reg(par, CARMINE_DISP_REG_L7_TRANS, 0);
340 /* Set default read skip parameter */
341 c_set_disp_reg(par, CARMINE_DISP_REG_L0RM, 0);
342 c_set_disp_reg(par, CARMINE_DISP_REG_L2RM, 0);
343 c_set_disp_reg(par, CARMINE_DISP_REG_L3RM, 0);
344 c_set_disp_reg(par, CARMINE_DISP_REG_L4RM, 0);
345 c_set_disp_reg(par, CARMINE_DISP_REG_L5RM, 0);
346 c_set_disp_reg(par, CARMINE_DISP_REG_L6RM, 0);
347 c_set_disp_reg(par, CARMINE_DISP_REG_L7RM, 0);
349 c_set_disp_reg(par, CARMINE_DISP_REG_L0PX, 0);
350 c_set_disp_reg(par, CARMINE_DISP_REG_L2PX, 0);
351 c_set_disp_reg(par, CARMINE_DISP_REG_L3PX, 0);
352 c_set_disp_reg(par, CARMINE_DISP_REG_L4PX, 0);
353 c_set_disp_reg(par, CARMINE_DISP_REG_L5PX, 0);
354 c_set_disp_reg(par, CARMINE_DISP_REG_L6PX, 0);
355 c_set_disp_reg(par, CARMINE_DISP_REG_L7PX, 0);
357 c_set_disp_reg(par, CARMINE_DISP_REG_L0PY, 0);
358 c_set_disp_reg(par, CARMINE_DISP_REG_L2PY, 0);
359 c_set_disp_reg(par, CARMINE_DISP_REG_L3PY, 0);
360 c_set_disp_reg(par, CARMINE_DISP_REG_L4PY, 0);
361 c_set_disp_reg(par, CARMINE_DISP_REG_L5PY, 0);
362 c_set_disp_reg(par, CARMINE_DISP_REG_L6PY, 0);
363 c_set_disp_reg(par, CARMINE_DISP_REG_L7PY, 0);
366 static void set_display_parameters(struct carmine_fb *par)
369 u32 hdp, vdp, htp, hsp, hsw, vtr, vsp, vsw;
372 * display timing. Parameters are decreased by one because hardware
373 * spec is 0 to (n - 1)
375 hdp = par->res->hdp - 1;
376 vdp = par->res->vdp - 1;
377 htp = par->res->htp - 1;
378 hsp = par->res->hsp - 1;
379 hsw = par->res->hsw - 1;
380 vtr = par->res->vtr - 1;
381 vsp = par->res->vsp - 1;
382 vsw = par->res->vsw - 1;
384 c_set_disp_reg(par, CARMINE_DISP_REG_H_TOTAL,
385 htp << CARMINE_DISP_HTP_SHIFT);
386 c_set_disp_reg(par, CARMINE_DISP_REG_H_PERIOD,
387 (hdp << CARMINE_DISP_HDB_SHIFT) | hdp);
388 c_set_disp_reg(par, CARMINE_DISP_REG_V_H_W_H_POS,
389 (vsw << CARMINE_DISP_VSW_SHIFT) |
390 (hsw << CARMINE_DISP_HSW_SHIFT) |
392 c_set_disp_reg(par, CARMINE_DISP_REG_V_TOTAL,
393 vtr << CARMINE_DISP_VTR_SHIFT);
394 c_set_disp_reg(par, CARMINE_DISP_REG_V_PERIOD_POS,
395 (vdp << CARMINE_DISP_VDP_SHIFT) | vsp);
398 mode = c_get_disp_reg(par, CARMINE_DISP_REG_DCM1);
399 mode = (mode & ~CARMINE_DISP_DCM_MASK) |
400 (par->res->disp_mode & CARMINE_DISP_DCM_MASK);
401 /* enable video output and layer 0 */
402 mode |= CARMINE_DEN | CARMINE_L0E;
403 c_set_disp_reg(par, CARMINE_DISP_REG_DCM1, mode);
406 static int carmine_set_par(struct fb_info *info)
408 struct carmine_fb *par = info->par;
411 ret = carmine_find_mode(&info->var);
416 if (par->cur_mode != par->new_mode) {
418 par->cur_mode = par->new_mode;
419 par->res = &car_modes[par->new_mode];
421 carmine_init_display_param(par);
422 set_display_parameters(par);
425 info->fix.line_length = info->var.xres * info->var.bits_per_pixel / 8;
429 static int init_hardware(struct carmine_hw *hw)
435 /* Initialize Carmine */
436 /* Sets internal clock */
437 c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_CLOCK_ENABLE,
438 CARMINE_DFLT_IP_CLOCK_ENABLE);
440 /* Video signal output is turned off */
441 c_set_hw_reg(hw, CARMINE_DISP0_REG + CARMINE_DISP_REG_DCM1, 0);
442 c_set_hw_reg(hw, CARMINE_DISP1_REG + CARMINE_DISP_REG_DCM1, 0);
445 c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_SOFTWARE_RESET, 1);
446 c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_SOFTWARE_RESET, 0);
448 /* I/O mode settings */
449 flags = CARMINE_DFLT_IP_DCTL_IO_CONT1 << 16 |
450 CARMINE_DFLT_IP_DCTL_IO_CONT0;
451 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_IOCONT1_IOCONT0,
454 /* DRAM initial sequence */
455 flags = CARMINE_DFLT_IP_DCTL_MODE << 16 | CARMINE_DFLT_IP_DCTL_ADD;
456 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_MODE_ADD,
459 flags = CARMINE_DFLT_IP_DCTL_SET_TIME1 << 16 |
460 CARMINE_DFLT_IP_DCTL_EMODE;
461 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_SETTIME1_EMODE,
464 flags = CARMINE_DFLT_IP_DCTL_REFRESH << 16 |
465 CARMINE_DFLT_IP_DCTL_SET_TIME2;
466 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_REFRESH_SETTIME2,
469 flags = CARMINE_DFLT_IP_DCTL_RESERVE2 << 16 |
470 CARMINE_DFLT_IP_DCTL_FIFO_DEPTH;
471 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_RSV2_RSV1, flags);
473 flags = CARMINE_DFLT_IP_DCTL_DDRIF2 << 16 | CARMINE_DFLT_IP_DCTL_DDRIF1;
474 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_DDRIF2_DDRIF1,
477 flags = CARMINE_DFLT_IP_DCTL_RESERVE0 << 16 |
478 CARMINE_DFLT_IP_DCTL_STATES;
479 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_RSV0_STATES,
482 /* Executes DLL reset */
483 if (CARMINE_DCTL_DLL_RESET) {
484 for (loops = 0; loops < CARMINE_DCTL_INIT_WAIT_LIMIT; loops++) {
486 ret = c_get_hw_reg(hw, CARMINE_DCTL_REG +
487 CARMINE_DCTL_REG_RSV0_STATES);
488 ret &= CARMINE_DCTL_REG_STATES_MASK;
492 mdelay(CARMINE_DCTL_INIT_WAIT_INTERVAL);
495 if (loops >= CARMINE_DCTL_INIT_WAIT_LIMIT) {
496 printk(KERN_ERR "DRAM init failed\n");
501 flags = CARMINE_DFLT_IP_DCTL_MODE_AFT_RST << 16 |
502 CARMINE_DFLT_IP_DCTL_ADD;
503 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_MODE_ADD, flags);
505 flags = CARMINE_DFLT_IP_DCTL_RESERVE0 << 16 |
506 CARMINE_DFLT_IP_DCTL_STATES_AFT_RST;
507 c_set_hw_reg(hw, CARMINE_DCTL_REG + CARMINE_DCTL_REG_RSV0_STATES,
510 /* Initialize the write back register */
511 c_set_hw_reg(hw, CARMINE_WB_REG + CARMINE_WB_REG_WBM,
512 CARMINE_WB_REG_WBM_DEFAULT);
514 /* Initialize the Kottos registers */
515 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_VRINTM, 0);
516 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_VRERRM, 0);
519 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_PX, 0);
520 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_PY, 0);
521 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_LX, 0);
522 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_LY, 0);
523 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_TX, 0);
524 c_set_hw_reg(hw, CARMINE_GRAPH_REG + CARMINE_GRAPH_REG_DC_OFFSET_TY, 0);
528 static struct fb_ops carminefb_ops = {
529 .owner = THIS_MODULE,
530 .fb_fillrect = cfb_fillrect,
531 .fb_copyarea = cfb_copyarea,
532 .fb_imageblit = cfb_imageblit,
534 .fb_check_var = carmine_check_var,
535 .fb_set_par = carmine_set_par,
536 .fb_setcolreg = carmine_setcolreg,
539 static int __devinit alloc_carmine_fb(void __iomem *regs, void __iomem *smem_base,
540 int smem_offset, struct device *device, struct fb_info **rinfo)
543 struct fb_info *info;
544 struct carmine_fb *par;
546 info = framebuffer_alloc(sizeof *par, device);
551 par->display_reg = regs;
552 par->smem_offset = smem_offset;
554 info->screen_base = smem_base + smem_offset;
555 info->screen_size = CARMINE_DISPLAY_MEM;
556 info->fbops = &carminefb_ops;
558 info->fix = carminefb_fix;
559 info->pseudo_palette = par->pseudo_palette;
560 info->flags = FBINFO_DEFAULT;
562 ret = fb_alloc_cmap(&info->cmap, 256, 1);
566 if (fb_mode >= ARRAY_SIZE(carmine_modedb))
567 fb_mode = CARMINEFB_DEFAULT_VIDEO_MODE;
569 par->cur_mode = par->new_mode = ~0;
571 ret = fb_find_mode(&info->var, info, fb_mode_str, carmine_modedb,
572 ARRAY_SIZE(carmine_modedb),
573 &carmine_modedb[fb_mode], 32);
574 if (!ret || ret == 4) {
576 goto err_dealloc_cmap;
579 fb_videomode_to_modelist(carmine_modedb, ARRAY_SIZE(carmine_modedb),
582 ret = register_framebuffer(info);
584 goto err_dealloc_cmap;
586 printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
593 fb_dealloc_cmap(&info->cmap);
595 framebuffer_release(info);
599 static void cleanup_fb_device(struct fb_info *info)
602 unregister_framebuffer(info);
603 fb_dealloc_cmap(&info->cmap);
604 framebuffer_release(info);
608 static int __devinit carminefb_probe(struct pci_dev *dev,
609 const struct pci_device_id *ent)
611 struct carmine_hw *hw;
612 struct device *device = &dev->dev;
613 struct fb_info *info;
616 ret = pci_enable_device(dev);
621 hw = kzalloc(sizeof *hw, GFP_KERNEL);
625 carminefb_fix.mmio_start = pci_resource_start(dev, CARMINE_CONFIG_BAR);
626 carminefb_fix.mmio_len = pci_resource_len(dev, CARMINE_CONFIG_BAR);
628 if (!request_mem_region(carminefb_fix.mmio_start,
629 carminefb_fix.mmio_len,
630 "carminefb regbase")) {
631 printk(KERN_ERR "carminefb: Can't reserve regbase.\n");
635 hw->v_regs = ioremap_nocache(carminefb_fix.mmio_start,
636 carminefb_fix.mmio_len);
638 printk(KERN_ERR "carminefb: Can't remap %s register.\n",
640 goto err_free_reg_mmio;
643 carminefb_fix.smem_start = pci_resource_start(dev, CARMINE_MEMORY_BAR);
644 carminefb_fix.smem_len = pci_resource_len(dev, CARMINE_MEMORY_BAR);
646 /* The memory area tends to be very large (256 MiB). Remap only what
647 * is required for that largest resolution to avoid remaps at run
650 if (carminefb_fix.smem_len > CARMINE_TOTAL_DIPLAY_MEM)
651 carminefb_fix.smem_len = CARMINE_TOTAL_DIPLAY_MEM;
653 else if (carminefb_fix.smem_len < CARMINE_TOTAL_DIPLAY_MEM) {
654 printk(KERN_ERR "carminefb: Memory bar is only %d bytes, %d "
655 "are required.", carminefb_fix.smem_len,
656 CARMINE_TOTAL_DIPLAY_MEM);
657 goto err_free_reg_mmio;
660 if (!request_mem_region(carminefb_fix.smem_start,
661 carminefb_fix.smem_len, "carminefb smem")) {
662 printk(KERN_ERR "carminefb: Can't reserve smem.\n");
663 goto err_unmap_vregs;
666 hw->screen_mem = ioremap_nocache(carminefb_fix.smem_start,
667 carminefb_fix.smem_len);
668 if (!hw->screen_mem) {
669 printk(KERN_ERR "carmine: Can't ioremap smem area.\n");
670 release_mem_region(carminefb_fix.smem_start,
671 carminefb_fix.smem_len);
675 ret = init_hardware(hw);
677 goto err_unmap_screen;
680 if (fb_displays & CARMINE_USE_DISPLAY0) {
681 ret = alloc_carmine_fb(hw->v_regs + CARMINE_DISP0_REG,
682 hw->screen_mem, CARMINE_DISPLAY_MEM * 0,
691 if (fb_displays & CARMINE_USE_DISPLAY1) {
692 ret = alloc_carmine_fb(hw->v_regs + CARMINE_DISP1_REG,
693 hw->screen_mem, CARMINE_DISPLAY_MEM * 1,
696 goto err_cleanup_fb0;
702 pci_set_drvdata(dev, hw);
706 cleanup_fb_device(hw->fb[0]);
708 /* disable clock, etc */
709 c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_CLOCK_ENABLE, 0);
711 iounmap(hw->screen_mem);
713 release_mem_region(carminefb_fix.mmio_start, carminefb_fix.mmio_len);
717 release_mem_region(carminefb_fix.mmio_start, carminefb_fix.mmio_len);
721 pci_disable_device(dev);
725 static void __devexit carminefb_remove(struct pci_dev *dev)
727 struct carmine_hw *hw = pci_get_drvdata(dev);
728 struct fb_fix_screeninfo fix;
731 /* in case we use only fb1 and not fb1 */
733 fix = hw->fb[0]->fix;
735 fix = hw->fb[1]->fix;
737 /* deactivate display(s) and switch clocks */
738 c_set_hw_reg(hw, CARMINE_DISP0_REG + CARMINE_DISP_REG_DCM1, 0);
739 c_set_hw_reg(hw, CARMINE_DISP1_REG + CARMINE_DISP_REG_DCM1, 0);
740 c_set_hw_reg(hw, CARMINE_CTL_REG + CARMINE_CTL_REG_CLOCK_ENABLE, 0);
742 for (i = 0; i < MAX_DISPLAY; i++)
743 cleanup_fb_device(hw->fb[i]);
745 iounmap(hw->screen_mem);
746 release_mem_region(fix.smem_start, fix.smem_len);
748 release_mem_region(fix.mmio_start, fix.mmio_len);
750 pci_set_drvdata(dev, NULL);
751 pci_disable_device(dev);
755 #define PCI_VENDOR_ID_FUJITU_LIMITED 0x10cf
756 static struct pci_device_id carmine_devices[] __devinitdata = {
758 PCI_DEVICE(PCI_VENDOR_ID_FUJITU_LIMITED, 0x202b)},
759 {0, 0, 0, 0, 0, 0, 0}
762 MODULE_DEVICE_TABLE(pci, carmine_devices);
764 static struct pci_driver carmine_pci_driver = {
766 .id_table = carmine_devices,
767 .probe = carminefb_probe,
768 .remove = __devexit_p(carminefb_remove),
771 static int __init carminefb_init(void)
774 (CARMINE_USE_DISPLAY0 | CARMINE_USE_DISPLAY1))) {
775 printk(KERN_ERR "If you disable both displays than you don't "
776 "need the driver at all\n");
779 return pci_register_driver(&carmine_pci_driver);
781 module_init(carminefb_init);
783 static void __exit carminefb_cleanup(void)
785 pci_unregister_driver(&carmine_pci_driver);
787 module_exit(carminefb_cleanup);
789 MODULE_AUTHOR("Sebastian Siewior <bigeasy@linutronix.de>");
790 MODULE_DESCRIPTION("Framebuffer driver for Fujitsu Carmine based devices");
791 MODULE_LICENSE("GPL v2");