Root/
1 | /* |
2 | * BRIEF MODULE DESCRIPTION |
3 | * Au1100 LCD Driver. |
4 | * |
5 | * Rewritten for 2.6 by Embedded Alley Solutions |
6 | * <source@embeddedalley.com>, based on submissions by |
7 | * Karl Lessard <klessard@sunrisetelecom.com> |
8 | * <c.pellegrin@exadron.com> |
9 | * |
10 | * PM support added by Rodolfo Giometti <giometti@linux.it> |
11 | * Cursor enable/disable by Rodolfo Giometti <giometti@linux.it> |
12 | * |
13 | * Copyright 2002 MontaVista Software |
14 | * Author: MontaVista Software, Inc. |
15 | * ppopov@mvista.com or source@mvista.com |
16 | * |
17 | * Copyright 2002 Alchemy Semiconductor |
18 | * Author: Alchemy Semiconductor |
19 | * |
20 | * Based on: |
21 | * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device |
22 | * Created 28 Dec 1997 by Geert Uytterhoeven |
23 | * |
24 | * This program is free software; you can redistribute it and/or modify it |
25 | * under the terms of the GNU General Public License as published by the |
26 | * Free Software Foundation; either version 2 of the License, or (at your |
27 | * option) any later version. |
28 | * |
29 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
30 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
31 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
32 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
33 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
34 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
35 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
36 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
37 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
38 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
39 | * |
40 | * You should have received a copy of the GNU General Public License along |
41 | * with this program; if not, write to the Free Software Foundation, Inc., |
42 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
43 | */ |
44 | #include <linux/module.h> |
45 | #include <linux/kernel.h> |
46 | #include <linux/errno.h> |
47 | #include <linux/string.h> |
48 | #include <linux/mm.h> |
49 | #include <linux/fb.h> |
50 | #include <linux/init.h> |
51 | #include <linux/interrupt.h> |
52 | #include <linux/ctype.h> |
53 | #include <linux/dma-mapping.h> |
54 | #include <linux/platform_device.h> |
55 | #include <linux/slab.h> |
56 | |
57 | #include <asm/mach-au1x00/au1000.h> |
58 | |
59 | #define DEBUG 0 |
60 | |
61 | #include "au1100fb.h" |
62 | |
63 | /* |
64 | * Sanity check. If this is a new Au1100 based board, search for |
65 | * the PB1100 ifdefs to make sure you modify the code accordingly. |
66 | */ |
67 | #if defined(CONFIG_MIPS_PB1100) |
68 | #include <asm/mach-pb1x00/pb1100.h> |
69 | #elif defined(CONFIG_MIPS_DB1100) |
70 | #include <asm/mach-db1x00/db1x00.h> |
71 | #else |
72 | #error "Unknown Au1100 board, Au1100 FB driver not supported" |
73 | #endif |
74 | |
75 | #define DRIVER_NAME "au1100fb" |
76 | #define DRIVER_DESC "LCD controller driver for AU1100 processors" |
77 | |
78 | #define to_au1100fb_device(_info) \ |
79 | (_info ? container_of(_info, struct au1100fb_device, info) : NULL); |
80 | |
81 | /* Bitfields format supported by the controller. Note that the order of formats |
82 | * SHOULD be the same as in the LCD_CONTROL_SBPPF field, so we can retrieve the |
83 | * right pixel format by doing rgb_bitfields[LCD_CONTROL_SBPPF_XXX >> LCD_CONTROL_SBPPF] |
84 | */ |
85 | struct fb_bitfield rgb_bitfields[][4] = |
86 | { |
87 | /* Red, Green, Blue, Transp */ |
88 | { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, |
89 | { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, |
90 | { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } }, |
91 | { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } }, |
92 | { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } }, |
93 | |
94 | /* The last is used to describe 12bpp format */ |
95 | { { 8, 4, 0 }, { 4, 4, 0 }, { 0, 4, 0 }, { 0, 0, 0 } }, |
96 | }; |
97 | |
98 | static struct fb_fix_screeninfo au1100fb_fix __initdata = { |
99 | .id = "AU1100 FB", |
100 | .xpanstep = 1, |
101 | .ypanstep = 1, |
102 | .type = FB_TYPE_PACKED_PIXELS, |
103 | .accel = FB_ACCEL_NONE, |
104 | }; |
105 | |
106 | static struct fb_var_screeninfo au1100fb_var __initdata = { |
107 | .activate = FB_ACTIVATE_NOW, |
108 | .height = -1, |
109 | .width = -1, |
110 | .vmode = FB_VMODE_NONINTERLACED, |
111 | }; |
112 | |
113 | static struct au1100fb_drv_info drv_info; |
114 | |
115 | static int nocursor = 0; |
116 | module_param(nocursor, int, 0644); |
117 | MODULE_PARM_DESC(nocursor, "cursor enable/disable"); |
118 | |
119 | /* fb_blank |
120 | * Blank the screen. Depending on the mode, the screen will be |
121 | * activated with the backlight color, or desactivated |
122 | */ |
123 | static int au1100fb_fb_blank(int blank_mode, struct fb_info *fbi) |
124 | { |
125 | struct au1100fb_device *fbdev = to_au1100fb_device(fbi); |
126 | |
127 | print_dbg("fb_blank %d %p", blank_mode, fbi); |
128 | |
129 | switch (blank_mode) { |
130 | |
131 | case VESA_NO_BLANKING: |
132 | /* Turn on panel */ |
133 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; |
134 | #ifdef CONFIG_MIPS_PB1100 |
135 | if (drv_info.panel_idx == 1) { |
136 | au_writew(au_readw(PB1100_G_CONTROL) |
137 | | (PB1100_G_CONTROL_BL | PB1100_G_CONTROL_VDD), |
138 | PB1100_G_CONTROL); |
139 | } |
140 | #endif |
141 | au_sync(); |
142 | break; |
143 | |
144 | case VESA_VSYNC_SUSPEND: |
145 | case VESA_HSYNC_SUSPEND: |
146 | case VESA_POWERDOWN: |
147 | /* Turn off panel */ |
148 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; |
149 | #ifdef CONFIG_MIPS_PB1100 |
150 | if (drv_info.panel_idx == 1) { |
151 | au_writew(au_readw(PB1100_G_CONTROL) |
152 | & ~(PB1100_G_CONTROL_BL | PB1100_G_CONTROL_VDD), |
153 | PB1100_G_CONTROL); |
154 | } |
155 | #endif |
156 | au_sync(); |
157 | break; |
158 | default: |
159 | break; |
160 | |
161 | } |
162 | return 0; |
163 | } |
164 | |
165 | /* |
166 | * Set hardware with var settings. This will enable the controller with a specific |
167 | * mode, normally validated with the fb_check_var method |
168 | */ |
169 | int au1100fb_setmode(struct au1100fb_device *fbdev) |
170 | { |
171 | struct fb_info *info = &fbdev->info; |
172 | u32 words; |
173 | int index; |
174 | |
175 | if (!fbdev) |
176 | return -EINVAL; |
177 | |
178 | /* Update var-dependent FB info */ |
179 | if (panel_is_active(fbdev->panel) || panel_is_color(fbdev->panel)) { |
180 | if (info->var.bits_per_pixel <= 8) { |
181 | /* palettized */ |
182 | info->var.red.offset = 0; |
183 | info->var.red.length = info->var.bits_per_pixel; |
184 | info->var.red.msb_right = 0; |
185 | |
186 | info->var.green.offset = 0; |
187 | info->var.green.length = info->var.bits_per_pixel; |
188 | info->var.green.msb_right = 0; |
189 | |
190 | info->var.blue.offset = 0; |
191 | info->var.blue.length = info->var.bits_per_pixel; |
192 | info->var.blue.msb_right = 0; |
193 | |
194 | info->var.transp.offset = 0; |
195 | info->var.transp.length = 0; |
196 | info->var.transp.msb_right = 0; |
197 | |
198 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; |
199 | info->fix.line_length = info->var.xres_virtual / |
200 | (8/info->var.bits_per_pixel); |
201 | } else { |
202 | /* non-palettized */ |
203 | index = (fbdev->panel->control_base & LCD_CONTROL_SBPPF_MASK) >> LCD_CONTROL_SBPPF_BIT; |
204 | info->var.red = rgb_bitfields[index][0]; |
205 | info->var.green = rgb_bitfields[index][1]; |
206 | info->var.blue = rgb_bitfields[index][2]; |
207 | info->var.transp = rgb_bitfields[index][3]; |
208 | |
209 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
210 | info->fix.line_length = info->var.xres_virtual << 1; /* depth=16 */ |
211 | } |
212 | } else { |
213 | /* mono */ |
214 | info->fix.visual = FB_VISUAL_MONO10; |
215 | info->fix.line_length = info->var.xres_virtual / 8; |
216 | } |
217 | |
218 | info->screen_size = info->fix.line_length * info->var.yres_virtual; |
219 | info->var.rotate = ((fbdev->panel->control_base&LCD_CONTROL_SM_MASK) \ |
220 | >> LCD_CONTROL_SM_BIT) * 90; |
221 | |
222 | /* Determine BPP mode and format */ |
223 | fbdev->regs->lcd_control = fbdev->panel->control_base; |
224 | fbdev->regs->lcd_horztiming = fbdev->panel->horztiming; |
225 | fbdev->regs->lcd_verttiming = fbdev->panel->verttiming; |
226 | fbdev->regs->lcd_clkcontrol = fbdev->panel->clkcontrol_base; |
227 | fbdev->regs->lcd_intenable = 0; |
228 | fbdev->regs->lcd_intstatus = 0; |
229 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(fbdev->fb_phys); |
230 | |
231 | if (panel_is_dual(fbdev->panel)) { |
232 | /* Second panel display seconf half of screen if possible, |
233 | * otherwise display the same as the first panel */ |
234 | if (info->var.yres_virtual >= (info->var.yres << 1)) { |
235 | fbdev->regs->lcd_dmaaddr1 = LCD_DMA_SA_N(fbdev->fb_phys + |
236 | (info->fix.line_length * |
237 | (info->var.yres_virtual >> 1))); |
238 | } else { |
239 | fbdev->regs->lcd_dmaaddr1 = LCD_DMA_SA_N(fbdev->fb_phys); |
240 | } |
241 | } |
242 | |
243 | words = info->fix.line_length / sizeof(u32); |
244 | if (!info->var.rotate || (info->var.rotate == 180)) { |
245 | words *= info->var.yres_virtual; |
246 | if (info->var.rotate /* 180 */) { |
247 | words -= (words % 8); /* should be divisable by 8 */ |
248 | } |
249 | } |
250 | fbdev->regs->lcd_words = LCD_WRD_WRDS_N(words); |
251 | |
252 | fbdev->regs->lcd_pwmdiv = 0; |
253 | fbdev->regs->lcd_pwmhi = 0; |
254 | |
255 | /* Resume controller */ |
256 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; |
257 | mdelay(10); |
258 | au1100fb_fb_blank(VESA_NO_BLANKING, info); |
259 | |
260 | return 0; |
261 | } |
262 | |
263 | /* fb_setcolreg |
264 | * Set color in LCD palette. |
265 | */ |
266 | int au1100fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi) |
267 | { |
268 | struct au1100fb_device *fbdev; |
269 | u32 *palette; |
270 | u32 value; |
271 | |
272 | fbdev = to_au1100fb_device(fbi); |
273 | palette = fbdev->regs->lcd_pallettebase; |
274 | |
275 | if (regno > (AU1100_LCD_NBR_PALETTE_ENTRIES - 1)) |
276 | return -EINVAL; |
277 | |
278 | if (fbi->var.grayscale) { |
279 | /* Convert color to grayscale */ |
280 | red = green = blue = |
281 | (19595 * red + 38470 * green + 7471 * blue) >> 16; |
282 | } |
283 | |
284 | if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) { |
285 | /* Place color in the pseudopalette */ |
286 | if (regno > 16) |
287 | return -EINVAL; |
288 | |
289 | palette = (u32*)fbi->pseudo_palette; |
290 | |
291 | red >>= (16 - fbi->var.red.length); |
292 | green >>= (16 - fbi->var.green.length); |
293 | blue >>= (16 - fbi->var.blue.length); |
294 | |
295 | value = (red << fbi->var.red.offset) | |
296 | (green << fbi->var.green.offset)| |
297 | (blue << fbi->var.blue.offset); |
298 | value &= 0xFFFF; |
299 | |
300 | } else if (panel_is_active(fbdev->panel)) { |
301 | /* COLOR TFT PALLETTIZED (use RGB 565) */ |
302 | value = (red & 0xF800)|((green >> 5) & 0x07E0)|((blue >> 11) & 0x001F); |
303 | value &= 0xFFFF; |
304 | |
305 | } else if (panel_is_color(fbdev->panel)) { |
306 | /* COLOR STN MODE */ |
307 | value = (((panel_swap_rgb(fbdev->panel) ? blue : red) >> 12) & 0x000F) | |
308 | ((green >> 8) & 0x00F0) | |
309 | (((panel_swap_rgb(fbdev->panel) ? red : blue) >> 4) & 0x0F00); |
310 | value &= 0xFFF; |
311 | } else { |
312 | /* MONOCHROME MODE */ |
313 | value = (green >> 12) & 0x000F; |
314 | value &= 0xF; |
315 | } |
316 | |
317 | palette[regno] = value; |
318 | |
319 | return 0; |
320 | } |
321 | |
322 | /* fb_pan_display |
323 | * Pan display in x and/or y as specified |
324 | */ |
325 | int au1100fb_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi) |
326 | { |
327 | struct au1100fb_device *fbdev; |
328 | int dy; |
329 | |
330 | fbdev = to_au1100fb_device(fbi); |
331 | |
332 | print_dbg("fb_pan_display %p %p", var, fbi); |
333 | |
334 | if (!var || !fbdev) { |
335 | return -EINVAL; |
336 | } |
337 | |
338 | if (var->xoffset - fbi->var.xoffset) { |
339 | /* No support for X panning for now! */ |
340 | return -EINVAL; |
341 | } |
342 | |
343 | print_dbg("fb_pan_display 2 %p %p", var, fbi); |
344 | dy = var->yoffset - fbi->var.yoffset; |
345 | if (dy) { |
346 | |
347 | u32 dmaaddr; |
348 | |
349 | print_dbg("Panning screen of %d lines", dy); |
350 | |
351 | dmaaddr = fbdev->regs->lcd_dmaaddr0; |
352 | dmaaddr += (fbi->fix.line_length * dy); |
353 | |
354 | /* TODO: Wait for current frame to finished */ |
355 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(dmaaddr); |
356 | |
357 | if (panel_is_dual(fbdev->panel)) { |
358 | dmaaddr = fbdev->regs->lcd_dmaaddr1; |
359 | dmaaddr += (fbi->fix.line_length * dy); |
360 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(dmaaddr); |
361 | } |
362 | } |
363 | print_dbg("fb_pan_display 3 %p %p", var, fbi); |
364 | |
365 | return 0; |
366 | } |
367 | |
368 | /* fb_rotate |
369 | * Rotate the display of this angle. This doesn't seems to be used by the core, |
370 | * but as our hardware supports it, so why not implementing it... |
371 | */ |
372 | void au1100fb_fb_rotate(struct fb_info *fbi, int angle) |
373 | { |
374 | struct au1100fb_device *fbdev = to_au1100fb_device(fbi); |
375 | |
376 | print_dbg("fb_rotate %p %d", fbi, angle); |
377 | |
378 | if (fbdev && (angle > 0) && !(angle % 90)) { |
379 | |
380 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; |
381 | |
382 | fbdev->regs->lcd_control &= ~(LCD_CONTROL_SM_MASK); |
383 | fbdev->regs->lcd_control |= ((angle/90) << LCD_CONTROL_SM_BIT); |
384 | |
385 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; |
386 | } |
387 | } |
388 | |
389 | /* fb_mmap |
390 | * Map video memory in user space. We don't use the generic fb_mmap method mainly |
391 | * to allow the use of the TLB streaming flag (CCA=6) |
392 | */ |
393 | int au1100fb_fb_mmap(struct fb_info *fbi, struct vm_area_struct *vma) |
394 | { |
395 | struct au1100fb_device *fbdev; |
396 | unsigned int len; |
397 | unsigned long start=0, off; |
398 | |
399 | fbdev = to_au1100fb_device(fbi); |
400 | |
401 | if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) { |
402 | return -EINVAL; |
403 | } |
404 | |
405 | start = fbdev->fb_phys & PAGE_MASK; |
406 | len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len); |
407 | |
408 | off = vma->vm_pgoff << PAGE_SHIFT; |
409 | |
410 | if ((vma->vm_end - vma->vm_start + off) > len) { |
411 | return -EINVAL; |
412 | } |
413 | |
414 | off += start; |
415 | vma->vm_pgoff = off >> PAGE_SHIFT; |
416 | |
417 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
418 | pgprot_val(vma->vm_page_prot) |= (6 << 9); //CCA=6 |
419 | |
420 | vma->vm_flags |= VM_IO; |
421 | |
422 | if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, |
423 | vma->vm_end - vma->vm_start, |
424 | vma->vm_page_prot)) { |
425 | return -EAGAIN; |
426 | } |
427 | |
428 | return 0; |
429 | } |
430 | |
431 | /* fb_cursor |
432 | * Used to disable cursor drawing... |
433 | */ |
434 | int au1100fb_fb_cursor(struct fb_info *info, struct fb_cursor *cursor) |
435 | { |
436 | if (nocursor) |
437 | return 0; |
438 | else |
439 | return -EINVAL; /* just to force soft_cursor() call */ |
440 | } |
441 | |
442 | static struct fb_ops au1100fb_ops = |
443 | { |
444 | .owner = THIS_MODULE, |
445 | .fb_setcolreg = au1100fb_fb_setcolreg, |
446 | .fb_blank = au1100fb_fb_blank, |
447 | .fb_pan_display = au1100fb_fb_pan_display, |
448 | .fb_fillrect = cfb_fillrect, |
449 | .fb_copyarea = cfb_copyarea, |
450 | .fb_imageblit = cfb_imageblit, |
451 | .fb_rotate = au1100fb_fb_rotate, |
452 | .fb_mmap = au1100fb_fb_mmap, |
453 | .fb_cursor = au1100fb_fb_cursor, |
454 | }; |
455 | |
456 | |
457 | /*-------------------------------------------------------------------------*/ |
458 | |
459 | /* AU1100 LCD controller device driver */ |
460 | |
461 | static int __init au1100fb_drv_probe(struct platform_device *dev) |
462 | { |
463 | struct au1100fb_device *fbdev = NULL; |
464 | struct resource *regs_res; |
465 | unsigned long page; |
466 | u32 sys_clksrc; |
467 | |
468 | if (!dev) |
469 | return -EINVAL; |
470 | |
471 | /* Allocate new device private */ |
472 | if (!(fbdev = kzalloc(sizeof(struct au1100fb_device), GFP_KERNEL))) { |
473 | print_err("fail to allocate device private record"); |
474 | return -ENOMEM; |
475 | } |
476 | |
477 | fbdev->panel = &known_lcd_panels[drv_info.panel_idx]; |
478 | |
479 | platform_set_drvdata(dev, (void *)fbdev); |
480 | |
481 | /* Allocate region for our registers and map them */ |
482 | if (!(regs_res = platform_get_resource(to_platform_device(dev), |
483 | IORESOURCE_MEM, 0))) { |
484 | print_err("fail to retrieve registers resource"); |
485 | return -EFAULT; |
486 | } |
487 | |
488 | au1100fb_fix.mmio_start = regs_res->start; |
489 | au1100fb_fix.mmio_len = regs_res->end - regs_res->start + 1; |
490 | |
491 | if (!request_mem_region(au1100fb_fix.mmio_start, au1100fb_fix.mmio_len, |
492 | DRIVER_NAME)) { |
493 | print_err("fail to lock memory region at 0x%08lx", |
494 | au1100fb_fix.mmio_start); |
495 | return -EBUSY; |
496 | } |
497 | |
498 | fbdev->regs = (struct au1100fb_regs*)KSEG1ADDR(au1100fb_fix.mmio_start); |
499 | |
500 | print_dbg("Register memory map at %p", fbdev->regs); |
501 | print_dbg("phys=0x%08x, size=%d", fbdev->regs_phys, fbdev->regs_len); |
502 | |
503 | |
504 | |
505 | /* Allocate the framebuffer to the maximum screen size * nbr of video buffers */ |
506 | fbdev->fb_len = fbdev->panel->xres * fbdev->panel->yres * |
507 | (fbdev->panel->bpp >> 3) * AU1100FB_NBR_VIDEO_BUFFERS; |
508 | |
509 | fbdev->fb_mem = dma_alloc_coherent(dev, PAGE_ALIGN(fbdev->fb_len), |
510 | &fbdev->fb_phys, GFP_KERNEL); |
511 | if (!fbdev->fb_mem) { |
512 | print_err("fail to allocate frambuffer (size: %dK))", |
513 | fbdev->fb_len / 1024); |
514 | return -ENOMEM; |
515 | } |
516 | |
517 | au1100fb_fix.smem_start = fbdev->fb_phys; |
518 | au1100fb_fix.smem_len = fbdev->fb_len; |
519 | |
520 | /* |
521 | * Set page reserved so that mmap will work. This is necessary |
522 | * since we'll be remapping normal memory. |
523 | */ |
524 | for (page = (unsigned long)fbdev->fb_mem; |
525 | page < PAGE_ALIGN((unsigned long)fbdev->fb_mem + fbdev->fb_len); |
526 | page += PAGE_SIZE) { |
527 | #if CONFIG_DMA_NONCOHERENT |
528 | SetPageReserved(virt_to_page(CAC_ADDR(page))); |
529 | #else |
530 | SetPageReserved(virt_to_page(page)); |
531 | #endif |
532 | } |
533 | |
534 | print_dbg("Framebuffer memory map at %p", fbdev->fb_mem); |
535 | print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024); |
536 | |
537 | /* Setup LCD clock to AUX (48 MHz) */ |
538 | sys_clksrc = au_readl(SYS_CLKSRC) & ~(SYS_CS_ML_MASK | SYS_CS_DL | SYS_CS_CL); |
539 | au_writel((sys_clksrc | (1 << SYS_CS_ML_BIT)), SYS_CLKSRC); |
540 | |
541 | /* load the panel info into the var struct */ |
542 | au1100fb_var.bits_per_pixel = fbdev->panel->bpp; |
543 | au1100fb_var.xres = fbdev->panel->xres; |
544 | au1100fb_var.xres_virtual = au1100fb_var.xres; |
545 | au1100fb_var.yres = fbdev->panel->yres; |
546 | au1100fb_var.yres_virtual = au1100fb_var.yres; |
547 | |
548 | fbdev->info.screen_base = fbdev->fb_mem; |
549 | fbdev->info.fbops = &au1100fb_ops; |
550 | fbdev->info.fix = au1100fb_fix; |
551 | |
552 | if (!(fbdev->info.pseudo_palette = kzalloc(sizeof(u32) * 16, GFP_KERNEL))) { |
553 | return -ENOMEM; |
554 | } |
555 | |
556 | if (fb_alloc_cmap(&fbdev->info.cmap, AU1100_LCD_NBR_PALETTE_ENTRIES, 0) < 0) { |
557 | print_err("Fail to allocate colormap (%d entries)", |
558 | AU1100_LCD_NBR_PALETTE_ENTRIES); |
559 | kfree(fbdev->info.pseudo_palette); |
560 | return -EFAULT; |
561 | } |
562 | |
563 | fbdev->info.var = au1100fb_var; |
564 | |
565 | /* Set h/w registers */ |
566 | au1100fb_setmode(fbdev); |
567 | |
568 | /* Register new framebuffer */ |
569 | if (register_framebuffer(&fbdev->info) < 0) { |
570 | print_err("cannot register new framebuffer"); |
571 | goto failed; |
572 | } |
573 | |
574 | return 0; |
575 | |
576 | failed: |
577 | if (fbdev->regs) { |
578 | release_mem_region(fbdev->regs_phys, fbdev->regs_len); |
579 | } |
580 | if (fbdev->fb_mem) { |
581 | dma_free_noncoherent(dev, fbdev->fb_len, fbdev->fb_mem, fbdev->fb_phys); |
582 | } |
583 | if (fbdev->info.cmap.len != 0) { |
584 | fb_dealloc_cmap(&fbdev->info.cmap); |
585 | } |
586 | kfree(fbdev); |
587 | platform_set_drvdata(dev, NULL); |
588 | |
589 | return 0; |
590 | } |
591 | |
592 | int au1100fb_drv_remove(struct platform_device *dev) |
593 | { |
594 | struct au1100fb_device *fbdev = NULL; |
595 | |
596 | if (!dev) |
597 | return -ENODEV; |
598 | |
599 | fbdev = (struct au1100fb_device *) platform_get_drvdata(dev); |
600 | |
601 | #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO) |
602 | au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info); |
603 | #endif |
604 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; |
605 | |
606 | /* Clean up all probe data */ |
607 | unregister_framebuffer(&fbdev->info); |
608 | |
609 | release_mem_region(fbdev->regs_phys, fbdev->regs_len); |
610 | |
611 | dma_free_coherent(dev, PAGE_ALIGN(fbdev->fb_len), fbdev->fb_mem, fbdev->fb_phys); |
612 | |
613 | fb_dealloc_cmap(&fbdev->info.cmap); |
614 | kfree(fbdev->info.pseudo_palette); |
615 | kfree((void*)fbdev); |
616 | |
617 | return 0; |
618 | } |
619 | |
620 | #ifdef CONFIG_PM |
621 | static u32 sys_clksrc; |
622 | static struct au1100fb_regs fbregs; |
623 | |
624 | int au1100fb_drv_suspend(struct platform_device *dev, pm_message_t state) |
625 | { |
626 | struct au1100fb_device *fbdev = platform_get_drvdata(dev); |
627 | |
628 | if (!fbdev) |
629 | return 0; |
630 | |
631 | /* Save the clock source state */ |
632 | sys_clksrc = au_readl(SYS_CLKSRC); |
633 | |
634 | /* Blank the LCD */ |
635 | au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info); |
636 | |
637 | /* Stop LCD clocking */ |
638 | au_writel(sys_clksrc & ~SYS_CS_ML_MASK, SYS_CLKSRC); |
639 | |
640 | memcpy(&fbregs, fbdev->regs, sizeof(struct au1100fb_regs)); |
641 | |
642 | return 0; |
643 | } |
644 | |
645 | int au1100fb_drv_resume(struct platform_device *dev) |
646 | { |
647 | struct au1100fb_device *fbdev = platform_get_drvdata(dev); |
648 | |
649 | if (!fbdev) |
650 | return 0; |
651 | |
652 | memcpy(fbdev->regs, &fbregs, sizeof(struct au1100fb_regs)); |
653 | |
654 | /* Restart LCD clocking */ |
655 | au_writel(sys_clksrc, SYS_CLKSRC); |
656 | |
657 | /* Unblank the LCD */ |
658 | au1100fb_fb_blank(VESA_NO_BLANKING, &fbdev->info); |
659 | |
660 | return 0; |
661 | } |
662 | #else |
663 | #define au1100fb_drv_suspend NULL |
664 | #define au1100fb_drv_resume NULL |
665 | #endif |
666 | |
667 | static struct platform_driver au1100fb_driver = { |
668 | .driver = { |
669 | .name = "au1100-lcd", |
670 | .owner = THIS_MODULE, |
671 | }, |
672 | .probe = au1100fb_drv_probe, |
673 | .remove = au1100fb_drv_remove, |
674 | .suspend = au1100fb_drv_suspend, |
675 | .resume = au1100fb_drv_resume, |
676 | }; |
677 | |
678 | /*-------------------------------------------------------------------------*/ |
679 | |
680 | /* Kernel driver */ |
681 | |
682 | int au1100fb_setup(char *options) |
683 | { |
684 | char* this_opt; |
685 | int num_panels = ARRAY_SIZE(known_lcd_panels); |
686 | char* mode = NULL; |
687 | int panel_idx = 0; |
688 | |
689 | if (num_panels <= 0) { |
690 | print_err("No LCD panels supported by driver!"); |
691 | return -EFAULT; |
692 | } |
693 | |
694 | if (options) { |
695 | while ((this_opt = strsep(&options,",")) != NULL) { |
696 | /* Panel option */ |
697 | if (!strncmp(this_opt, "panel:", 6)) { |
698 | int i; |
699 | this_opt += 6; |
700 | for (i = 0; i < num_panels; i++) { |
701 | if (!strncmp(this_opt, |
702 | known_lcd_panels[i].name, |
703 | strlen(this_opt))) { |
704 | panel_idx = i; |
705 | break; |
706 | } |
707 | } |
708 | if (i >= num_panels) { |
709 | print_warn("Panel %s not supported!", this_opt); |
710 | } |
711 | } |
712 | if (!strncmp(this_opt, "nocursor", 8)) { |
713 | this_opt += 8; |
714 | nocursor = 1; |
715 | print_info("Cursor disabled"); |
716 | } |
717 | /* Mode option (only option that start with digit) */ |
718 | else if (isdigit(this_opt[0])) { |
719 | mode = kstrdup(this_opt, GFP_KERNEL); |
720 | if (!mode) { |
721 | print_err("memory allocation failed"); |
722 | return -ENOMEM; |
723 | } |
724 | } |
725 | /* Unsupported option */ |
726 | else { |
727 | print_warn("Unsupported option \"%s\"", this_opt); |
728 | } |
729 | } |
730 | } |
731 | |
732 | drv_info.panel_idx = panel_idx; |
733 | drv_info.opt_mode = mode; |
734 | |
735 | print_info("Panel=%s Mode=%s", |
736 | known_lcd_panels[drv_info.panel_idx].name, |
737 | drv_info.opt_mode ? drv_info.opt_mode : "default"); |
738 | |
739 | return 0; |
740 | } |
741 | |
742 | int __init au1100fb_init(void) |
743 | { |
744 | char* options; |
745 | int ret; |
746 | |
747 | print_info("" DRIVER_DESC ""); |
748 | |
749 | memset(&drv_info, 0, sizeof(drv_info)); |
750 | |
751 | if (fb_get_options(DRIVER_NAME, &options)) |
752 | return -ENODEV; |
753 | |
754 | /* Setup driver with options */ |
755 | ret = au1100fb_setup(options); |
756 | if (ret < 0) { |
757 | print_err("Fail to setup driver"); |
758 | return ret; |
759 | } |
760 | |
761 | return platform_driver_register(&au1100fb_driver); |
762 | } |
763 | |
764 | void __exit au1100fb_cleanup(void) |
765 | { |
766 | platform_driver_unregister(&au1100fb_driver); |
767 | |
768 | kfree(drv_info.opt_mode); |
769 | } |
770 | |
771 | module_init(au1100fb_init); |
772 | module_exit(au1100fb_cleanup); |
773 | |
774 | MODULE_DESCRIPTION(DRIVER_DESC); |
775 | MODULE_LICENSE("GPL"); |
776 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9