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ieee802154: verify packet size before trying to allocate it
[linux/fpc-iii.git] / drivers / video / au1200fb.c
blob7ca79f02056ebc9d967af326800687529dae37a8
1 /*
2 * BRIEF MODULE DESCRIPTION
3 * Au1200 LCD Driver.
4 *
5 * Copyright 2004-2005 AMD
6 * Author: AMD
7 *
8 * Based on:
9 * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device
10 * Created 28 Dec 1997 by Geert Uytterhoeven
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 *
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
20 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
24 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * You should have received a copy of the GNU General Public License along
29 * with this program; if not, write to the Free Software Foundation, Inc.,
30 * 675 Mass Ave, Cambridge, MA 02139, USA.
31 */
32
33 #include <linux/module.h>
34 #include <linux/platform_device.h>
35 #include <linux/kernel.h>
36 #include <linux/errno.h>
37 #include <linux/string.h>
38 #include <linux/mm.h>
39 #include <linux/fb.h>
40 #include <linux/init.h>
41 #include <linux/interrupt.h>
42 #include <linux/ctype.h>
43 #include <linux/dma-mapping.h>
44 #include <linux/slab.h>
45
46 #include <asm/mach-au1x00/au1000.h>
47 #include <asm/mach-au1x00/au1200fb.h> /* platform_data */
48 #include "au1200fb.h"
49
50 #define DRIVER_NAME "au1200fb"
51 #define DRIVER_DESC "LCD controller driver for AU1200 processors"
52
53 #define DEBUG 0
54
55 #define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg)
56 #define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg)
57 #define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg)
58
59 #if DEBUG
60 #define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg)
61 #else
62 #define print_dbg(f, arg...) do {} while (0)
63 #endif
64
65
66 #define AU1200_LCD_FB_IOCTL 0x46FF
67
68 #define AU1200_LCD_SET_SCREEN 1
69 #define AU1200_LCD_GET_SCREEN 2
70 #define AU1200_LCD_SET_WINDOW 3
71 #define AU1200_LCD_GET_WINDOW 4
72 #define AU1200_LCD_SET_PANEL 5
73 #define AU1200_LCD_GET_PANEL 6
74
75 #define SCREEN_SIZE (1<< 1)
76 #define SCREEN_BACKCOLOR (1<< 2)
77 #define SCREEN_BRIGHTNESS (1<< 3)
78 #define SCREEN_COLORKEY (1<< 4)
79 #define SCREEN_MASK (1<< 5)
80
81 struct au1200_lcd_global_regs_t {
82 unsigned int flags;
83 unsigned int xsize;
84 unsigned int ysize;
85 unsigned int backcolor;
86 unsigned int brightness;
87 unsigned int colorkey;
88 unsigned int mask;
89 unsigned int panel_choice;
90 char panel_desc[80];
91
92 };
93
94 #define WIN_POSITION (1<< 0)
95 #define WIN_ALPHA_COLOR (1<< 1)
96 #define WIN_ALPHA_MODE (1<< 2)
97 #define WIN_PRIORITY (1<< 3)
98 #define WIN_CHANNEL (1<< 4)
99 #define WIN_BUFFER_FORMAT (1<< 5)
100 #define WIN_COLOR_ORDER (1<< 6)
101 #define WIN_PIXEL_ORDER (1<< 7)
102 #define WIN_SIZE (1<< 8)
103 #define WIN_COLORKEY_MODE (1<< 9)
104 #define WIN_DOUBLE_BUFFER_MODE (1<< 10)
105 #define WIN_RAM_ARRAY_MODE (1<< 11)
106 #define WIN_BUFFER_SCALE (1<< 12)
107 #define WIN_ENABLE (1<< 13)
108
109 struct au1200_lcd_window_regs_t {
110 unsigned int flags;
111 unsigned int xpos;
112 unsigned int ypos;
113 unsigned int alpha_color;
114 unsigned int alpha_mode;
115 unsigned int priority;
116 unsigned int channel;
117 unsigned int buffer_format;
118 unsigned int color_order;
119 unsigned int pixel_order;
120 unsigned int xsize;
121 unsigned int ysize;
122 unsigned int colorkey_mode;
123 unsigned int double_buffer_mode;
124 unsigned int ram_array_mode;
125 unsigned int xscale;
126 unsigned int yscale;
127 unsigned int enable;
128 };
129
130
131 struct au1200_lcd_iodata_t {
132 unsigned int subcmd;
133 struct au1200_lcd_global_regs_t global;
134 struct au1200_lcd_window_regs_t window;
135 };
136
137 #if defined(__BIG_ENDIAN)
138 #define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11
139 #else
140 #define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00
141 #endif
142 #define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565
143
144 /* Private, per-framebuffer management information (independent of the panel itself) */
145 struct au1200fb_device {
146 struct fb_info *fb_info; /* FB driver info record */
147 struct au1200fb_platdata *pd;
148
149 int plane;
150 unsigned char* fb_mem; /* FrameBuffer memory map */
151 unsigned int fb_len;
152 dma_addr_t fb_phys;
153 };
154
155 /********************************************************************/
156
157 /* LCD controller restrictions */
158 #define AU1200_LCD_MAX_XRES 1280
159 #define AU1200_LCD_MAX_YRES 1024
160 #define AU1200_LCD_MAX_BPP 32
161 #define AU1200_LCD_MAX_CLK 96000000 /* fixme: this needs to go away ? */
162 #define AU1200_LCD_NBR_PALETTE_ENTRIES 256
163
164 /* Default number of visible screen buffer to allocate */
165 #define AU1200FB_NBR_VIDEO_BUFFERS 1
166
167 /* Default maximum number of fb devices to create */
168 #define MAX_DEVICE_COUNT 4
169
170 /* Default window configuration entry to use (see windows[]) */
171 #define DEFAULT_WINDOW_INDEX 2
172
173 /********************************************************************/
174
175 static struct fb_info *_au1200fb_infos[MAX_DEVICE_COUNT];
176 static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR;
177 static int device_count = MAX_DEVICE_COUNT;
178 static int window_index = DEFAULT_WINDOW_INDEX; /* default is zero */
179 static int panel_index = 2; /* default is zero */
180 static struct window_settings *win;
181 static struct panel_settings *panel;
182 static int noblanking = 1;
183 static int nohwcursor = 0;
184
185 struct window_settings {
186 unsigned char name[64];
187 uint32 mode_backcolor;
188 uint32 mode_colorkey;
189 uint32 mode_colorkeymsk;
190 struct {
191 int xres;
192 int yres;
193 int xpos;
194 int ypos;
195 uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */
196 uint32 mode_winenable;
197 } w[4];
198 };
199
200 #if defined(__BIG_ENDIAN)
201 #define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00
202 #else
203 #define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01
204 #endif
205
206 /*
207 * Default window configurations
208 */
209 static struct window_settings windows[] = {
210 { /* Index 0 */
211 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
212 /* mode_backcolor */ 0x006600ff,
213 /* mode_colorkey,msk*/ 0, 0,
214 {
215 {
216 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
217 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
218 LCD_WINCTRL1_PO_16BPP,
219 /* mode_winenable*/ LCD_WINENABLE_WEN0,
220 },
221 {
222 /* xres, yres, xpos, ypos */ 100, 100, 100, 100,
223 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
224 LCD_WINCTRL1_PO_16BPP |
225 LCD_WINCTRL1_PIPE,
226 /* mode_winenable*/ LCD_WINENABLE_WEN1,
227 },
228 {
229 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
230 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
231 LCD_WINCTRL1_PO_16BPP,
232 /* mode_winenable*/ 0,
233 },
234 {
235 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
236 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
237 LCD_WINCTRL1_PO_16BPP |
238 LCD_WINCTRL1_PIPE,
239 /* mode_winenable*/ 0,
240 },
241 },
242 },
243
244 { /* Index 1 */
245 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
246 /* mode_backcolor */ 0x006600ff,
247 /* mode_colorkey,msk*/ 0, 0,
248 {
249 {
250 /* xres, yres, xpos, ypos */ 320, 240, 5, 5,
251 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP |
252 LCD_WINCTRL1_PO_00,
253 /* mode_winenable*/ LCD_WINENABLE_WEN0,
254 },
255 {
256 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
257 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565
258 | LCD_WINCTRL1_PO_16BPP,
259 /* mode_winenable*/ 0,
260 },
261 {
262 /* xres, yres, xpos, ypos */ 100, 100, 0, 0,
263 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
264 LCD_WINCTRL1_PO_16BPP |
265 LCD_WINCTRL1_PIPE,
266 /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
267 },
268 {
269 /* xres, yres, xpos, ypos */ 200, 25, 0, 0,
270 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
271 LCD_WINCTRL1_PO_16BPP |
272 LCD_WINCTRL1_PIPE,
273 /* mode_winenable*/ 0,
274 },
275 },
276 },
277 { /* Index 2 */
278 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
279 /* mode_backcolor */ 0x006600ff,
280 /* mode_colorkey,msk*/ 0, 0,
281 {
282 {
283 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
284 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
285 LCD_WINCTRL1_PO_16BPP,
286 /* mode_winenable*/ LCD_WINENABLE_WEN0,
287 },
288 {
289 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
290 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
291 LCD_WINCTRL1_PO_16BPP,
292 /* mode_winenable*/ 0,
293 },
294 {
295 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
296 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP |
297 LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE,
298 /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
299 },
300 {
301 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
302 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
303 LCD_WINCTRL1_PO_16BPP |
304 LCD_WINCTRL1_PIPE,
305 /* mode_winenable*/ 0,
306 },
307 },
308 },
309 /* Need VGA 640 @ 24bpp, @ 32bpp */
310 /* Need VGA 800 @ 24bpp, @ 32bpp */
311 /* Need VGA 1024 @ 24bpp, @ 32bpp */
312 };
313
314 /*
315 * Controller configurations for various panels.
316 */
317
318 struct panel_settings
319 {
320 const char name[25]; /* Full name <vendor>_<model> */
321
322 struct fb_monspecs monspecs; /* FB monitor specs */
323
324 /* panel timings */
325 uint32 mode_screen;
326 uint32 mode_horztiming;
327 uint32 mode_verttiming;
328 uint32 mode_clkcontrol;
329 uint32 mode_pwmdiv;
330 uint32 mode_pwmhi;
331 uint32 mode_outmask;
332 uint32 mode_fifoctrl;
333 uint32 mode_toyclksrc;
334 uint32 mode_backlight;
335 uint32 mode_auxpll;
336 #define Xres min_xres
337 #define Yres min_yres
338 u32 min_xres; /* Minimum horizontal resolution */
339 u32 max_xres; /* Maximum horizontal resolution */
340 u32 min_yres; /* Minimum vertical resolution */
341 u32 max_yres; /* Maximum vertical resolution */
342 };
343
344 /********************************************************************/
345 /* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */
346
347 /* List of panels known to work with the AU1200 LCD controller.
348 * To add a new panel, enter the same specifications as the
349 * Generic_TFT one, and MAKE SURE that it doesn't conflicts
350 * with the controller restrictions. Restrictions are:
351 *
352 * STN color panels: max_bpp <= 12
353 * STN mono panels: max_bpp <= 4
354 * TFT panels: max_bpp <= 16
355 * max_xres <= 800
356 * max_yres <= 600
357 */
358 static struct panel_settings known_lcd_panels[] =
359 {
360 [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */
361 .name = "QVGA_320x240",
362 .monspecs = {
363 .modedb = NULL,
364 .modedb_len = 0,
365 .hfmin = 30000,
366 .hfmax = 70000,
367 .vfmin = 60,
368 .vfmax = 60,
369 .dclkmin = 6000000,
370 .dclkmax = 28000000,
371 .input = FB_DISP_RGB,
372 },
373 .mode_screen = LCD_SCREEN_SX_N(320) |
374 LCD_SCREEN_SY_N(240),
375 .mode_horztiming = 0x00c4623b,
376 .mode_verttiming = 0x00502814,
377 .mode_clkcontrol = 0x00020002, /* /4=24Mhz */
378 .mode_pwmdiv = 0x00000000,
379 .mode_pwmhi = 0x00000000,
380 .mode_outmask = 0x00FFFFFF,
381 .mode_fifoctrl = 0x2f2f2f2f,
382 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
383 .mode_backlight = 0x00000000,
384 .mode_auxpll = 8, /* 96MHz AUXPLL */
385 320, 320,
386 240, 240,
387 },
388
389 [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */
390 .name = "VGA_640x480",
391 .monspecs = {
392 .modedb = NULL,
393 .modedb_len = 0,
394 .hfmin = 30000,
395 .hfmax = 70000,
396 .vfmin = 60,
397 .vfmax = 60,
398 .dclkmin = 6000000,
399 .dclkmax = 28000000,
400 .input = FB_DISP_RGB,
401 },
402 .mode_screen = 0x13f9df80,
403 .mode_horztiming = 0x003c5859,
404 .mode_verttiming = 0x00741201,
405 .mode_clkcontrol = 0x00020001, /* /4=24Mhz */
406 .mode_pwmdiv = 0x00000000,
407 .mode_pwmhi = 0x00000000,
408 .mode_outmask = 0x00FFFFFF,
409 .mode_fifoctrl = 0x2f2f2f2f,
410 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
411 .mode_backlight = 0x00000000,
412 .mode_auxpll = 8, /* 96MHz AUXPLL */
413 640, 480,
414 640, 480,
415 },
416
417 [2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */
418 .name = "SVGA_800x600",
419 .monspecs = {
420 .modedb = NULL,
421 .modedb_len = 0,
422 .hfmin = 30000,
423 .hfmax = 70000,
424 .vfmin = 60,
425 .vfmax = 60,
426 .dclkmin = 6000000,
427 .dclkmax = 28000000,
428 .input = FB_DISP_RGB,
429 },
430 .mode_screen = 0x18fa5780,
431 .mode_horztiming = 0x00dc7e77,
432 .mode_verttiming = 0x00584805,
433 .mode_clkcontrol = 0x00020000, /* /2=48Mhz */
434 .mode_pwmdiv = 0x00000000,
435 .mode_pwmhi = 0x00000000,
436 .mode_outmask = 0x00FFFFFF,
437 .mode_fifoctrl = 0x2f2f2f2f,
438 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
439 .mode_backlight = 0x00000000,
440 .mode_auxpll = 8, /* 96MHz AUXPLL */
441 800, 800,
442 600, 600,
443 },
444
445 [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */
446 .name = "XVGA_1024x768",
447 .monspecs = {
448 .modedb = NULL,
449 .modedb_len = 0,
450 .hfmin = 30000,
451 .hfmax = 70000,
452 .vfmin = 60,
453 .vfmax = 60,
454 .dclkmin = 6000000,
455 .dclkmax = 28000000,
456 .input = FB_DISP_RGB,
457 },
458 .mode_screen = 0x1ffaff80,
459 .mode_horztiming = 0x007d0e57,
460 .mode_verttiming = 0x00740a01,
461 .mode_clkcontrol = 0x000A0000, /* /1 */
462 .mode_pwmdiv = 0x00000000,
463 .mode_pwmhi = 0x00000000,
464 .mode_outmask = 0x00FFFFFF,
465 .mode_fifoctrl = 0x2f2f2f2f,
466 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
467 .mode_backlight = 0x00000000,
468 .mode_auxpll = 6, /* 72MHz AUXPLL */
469 1024, 1024,
470 768, 768,
471 },
472
473 [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */
474 .name = "XVGA_1280x1024",
475 .monspecs = {
476 .modedb = NULL,
477 .modedb_len = 0,
478 .hfmin = 30000,
479 .hfmax = 70000,
480 .vfmin = 60,
481 .vfmax = 60,
482 .dclkmin = 6000000,
483 .dclkmax = 28000000,
484 .input = FB_DISP_RGB,
485 },
486 .mode_screen = 0x27fbff80,
487 .mode_horztiming = 0x00cdb2c7,
488 .mode_verttiming = 0x00600002,
489 .mode_clkcontrol = 0x000A0000, /* /1 */
490 .mode_pwmdiv = 0x00000000,
491 .mode_pwmhi = 0x00000000,
492 .mode_outmask = 0x00FFFFFF,
493 .mode_fifoctrl = 0x2f2f2f2f,
494 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
495 .mode_backlight = 0x00000000,
496 .mode_auxpll = 10, /* 120MHz AUXPLL */
497 1280, 1280,
498 1024, 1024,
499 },
500
501 [5] = { /* Samsung 1024x768 TFT */
502 .name = "Samsung_1024x768_TFT",
503 .monspecs = {
504 .modedb = NULL,
505 .modedb_len = 0,
506 .hfmin = 30000,
507 .hfmax = 70000,
508 .vfmin = 60,
509 .vfmax = 60,
510 .dclkmin = 6000000,
511 .dclkmax = 28000000,
512 .input = FB_DISP_RGB,
513 },
514 .mode_screen = 0x1ffaff80,
515 .mode_horztiming = 0x018cc677,
516 .mode_verttiming = 0x00241217,
517 .mode_clkcontrol = 0x00000000, /* SCB 0x1 /4=24Mhz */
518 .mode_pwmdiv = 0x8000063f, /* SCB 0x0 */
519 .mode_pwmhi = 0x03400000, /* SCB 0x0 */
520 .mode_outmask = 0x00FFFFFF,
521 .mode_fifoctrl = 0x2f2f2f2f,
522 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
523 .mode_backlight = 0x00000000,
524 .mode_auxpll = 8, /* 96MHz AUXPLL */
525 1024, 1024,
526 768, 768,
527 },
528
529 [6] = { /* Toshiba 640x480 TFT */
530 .name = "Toshiba_640x480_TFT",
531 .monspecs = {
532 .modedb = NULL,
533 .modedb_len = 0,
534 .hfmin = 30000,
535 .hfmax = 70000,
536 .vfmin = 60,
537 .vfmax = 60,
538 .dclkmin = 6000000,
539 .dclkmax = 28000000,
540 .input = FB_DISP_RGB,
541 },
542 .mode_screen = LCD_SCREEN_SX_N(640) |
543 LCD_SCREEN_SY_N(480),
544 .mode_horztiming = LCD_HORZTIMING_HPW_N(96) |
545 LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51),
546 .mode_verttiming = LCD_VERTTIMING_VPW_N(2) |
547 LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32),
548 .mode_clkcontrol = 0x00000000, /* /4=24Mhz */
549 .mode_pwmdiv = 0x8000063f,
550 .mode_pwmhi = 0x03400000,
551 .mode_outmask = 0x00fcfcfc,
552 .mode_fifoctrl = 0x2f2f2f2f,
553 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
554 .mode_backlight = 0x00000000,
555 .mode_auxpll = 8, /* 96MHz AUXPLL */
556 640, 480,
557 640, 480,
558 },
559
560 [7] = { /* Sharp 320x240 TFT */
561 .name = "Sharp_320x240_TFT",
562 .monspecs = {
563 .modedb = NULL,
564 .modedb_len = 0,
565 .hfmin = 12500,
566 .hfmax = 20000,
567 .vfmin = 38,
568 .vfmax = 81,
569 .dclkmin = 4500000,
570 .dclkmax = 6800000,
571 .input = FB_DISP_RGB,
572 },
573 .mode_screen = LCD_SCREEN_SX_N(320) |
574 LCD_SCREEN_SY_N(240),
575 .mode_horztiming = LCD_HORZTIMING_HPW_N(60) |
576 LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2),
577 .mode_verttiming = LCD_VERTTIMING_VPW_N(2) |
578 LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5),
579 .mode_clkcontrol = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/
580 .mode_pwmdiv = 0x8000063f,
581 .mode_pwmhi = 0x03400000,
582 .mode_outmask = 0x00fcfcfc,
583 .mode_fifoctrl = 0x2f2f2f2f,
584 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
585 .mode_backlight = 0x00000000,
586 .mode_auxpll = 8, /* 96MHz AUXPLL */
587 320, 320,
588 240, 240,
589 },
590
591 [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */
592 .name = "Toppoly_TD070WGCB2",
593 .monspecs = {
594 .modedb = NULL,
595 .modedb_len = 0,
596 .hfmin = 30000,
597 .hfmax = 70000,
598 .vfmin = 60,
599 .vfmax = 60,
600 .dclkmin = 6000000,
601 .dclkmax = 28000000,
602 .input = FB_DISP_RGB,
603 },
604 .mode_screen = LCD_SCREEN_SX_N(856) |
605 LCD_SCREEN_SY_N(480),
606 .mode_horztiming = LCD_HORZTIMING_HND2_N(43) |
607 LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114),
608 .mode_verttiming = LCD_VERTTIMING_VND2_N(20) |
609 LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4),
610 .mode_clkcontrol = 0x00020001, /* /4=24Mhz */
611 .mode_pwmdiv = 0x8000063f,
612 .mode_pwmhi = 0x03400000,
613 .mode_outmask = 0x00fcfcfc,
614 .mode_fifoctrl = 0x2f2f2f2f,
615 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
616 .mode_backlight = 0x00000000,
617 .mode_auxpll = 8, /* 96MHz AUXPLL */
618 856, 856,
619 480, 480,
620 },
621 [9] = {
622 .name = "DB1300_800x480",
623 .monspecs = {
624 .modedb = NULL,
625 .modedb_len = 0,
626 .hfmin = 30000,
627 .hfmax = 70000,
628 .vfmin = 60,
629 .vfmax = 60,
630 .dclkmin = 6000000,
631 .dclkmax = 28000000,
632 .input = FB_DISP_RGB,
633 },
634 .mode_screen = LCD_SCREEN_SX_N(800) |
635 LCD_SCREEN_SY_N(480),
636 .mode_horztiming = LCD_HORZTIMING_HPW_N(5) |
637 LCD_HORZTIMING_HND1_N(16) |
638 LCD_HORZTIMING_HND2_N(8),
639 .mode_verttiming = LCD_VERTTIMING_VPW_N(4) |
640 LCD_VERTTIMING_VND1_N(8) |
641 LCD_VERTTIMING_VND2_N(5),
642 .mode_clkcontrol = LCD_CLKCONTROL_PCD_N(1) |
643 LCD_CLKCONTROL_IV |
644 LCD_CLKCONTROL_IH,
645 .mode_pwmdiv = 0x00000000,
646 .mode_pwmhi = 0x00000000,
647 .mode_outmask = 0x00FFFFFF,
648 .mode_fifoctrl = 0x2f2f2f2f,
649 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
650 .mode_backlight = 0x00000000,
651 .mode_auxpll = (48/12) * 2,
652 800, 800,
653 480, 480,
654 },
655 };
656
657 #define NUM_PANELS (ARRAY_SIZE(known_lcd_panels))
658
659 /********************************************************************/
660
661 static int winbpp (unsigned int winctrl1)
662 {
663 int bits = 0;
664
665 /* how many bits are needed for each pixel format */
666 switch (winctrl1 & LCD_WINCTRL1_FRM) {
667 case LCD_WINCTRL1_FRM_1BPP:
668 bits = 1;
669 break;
670 case LCD_WINCTRL1_FRM_2BPP:
671 bits = 2;
672 break;
673 case LCD_WINCTRL1_FRM_4BPP:
674 bits = 4;
675 break;
676 case LCD_WINCTRL1_FRM_8BPP:
677 bits = 8;
678 break;
679 case LCD_WINCTRL1_FRM_12BPP:
680 case LCD_WINCTRL1_FRM_16BPP655:
681 case LCD_WINCTRL1_FRM_16BPP565:
682 case LCD_WINCTRL1_FRM_16BPP556:
683 case LCD_WINCTRL1_FRM_16BPPI1555:
684 case LCD_WINCTRL1_FRM_16BPPI5551:
685 case LCD_WINCTRL1_FRM_16BPPA1555:
686 case LCD_WINCTRL1_FRM_16BPPA5551:
687 bits = 16;
688 break;
689 case LCD_WINCTRL1_FRM_24BPP:
690 case LCD_WINCTRL1_FRM_32BPP:
691 bits = 32;
692 break;
693 }
694
695 return bits;
696 }
697
698 static int fbinfo2index (struct fb_info *fb_info)
699 {
700 int i;
701
702 for (i = 0; i < device_count; ++i) {
703 if (fb_info == _au1200fb_infos[i])
704 return i;
705 }
706 printk("au1200fb: ERROR: fbinfo2index failed!\n");
707 return -1;
708 }
709
710 static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
711 int xpos, int ypos)
712 {
713 uint32 winctrl0, winctrl1, winenable, fb_offset = 0;
714 int xsz, ysz;
715
716 /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */
717
718 winctrl0 = lcd->window[plane].winctrl0;
719 winctrl1 = lcd->window[plane].winctrl1;
720 winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN);
721 winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY);
722
723 /* Check for off-screen adjustments */
724 xsz = win->w[plane].xres;
725 ysz = win->w[plane].yres;
726 if ((xpos + win->w[plane].xres) > panel->Xres) {
727 /* Off-screen to the right */
728 xsz = panel->Xres - xpos; /* off by 1 ??? */
729 /*printk("off screen right\n");*/
730 }
731
732 if ((ypos + win->w[plane].yres) > panel->Yres) {
733 /* Off-screen to the bottom */
734 ysz = panel->Yres - ypos; /* off by 1 ??? */
735 /*printk("off screen bottom\n");*/
736 }
737
738 if (xpos < 0) {
739 /* Off-screen to the left */
740 xsz = win->w[plane].xres + xpos;
741 fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);
742 xpos = 0;
743 /*printk("off screen left\n");*/
744 }
745
746 if (ypos < 0) {
747 /* Off-screen to the top */
748 ysz = win->w[plane].yres + ypos;
749 /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */
750 ypos = 0;
751 /*printk("off screen top\n");*/
752 }
753
754 /* record settings */
755 win->w[plane].xpos = xpos;
756 win->w[plane].ypos = ypos;
757
758 xsz -= 1;
759 ysz -= 1;
760 winctrl0 |= (xpos << 21);
761 winctrl0 |= (ypos << 10);
762 winctrl1 |= (xsz << 11);
763 winctrl1 |= (ysz << 0);
764
765 /* Disable the window while making changes, then restore WINEN */
766 winenable = lcd->winenable & (1 << plane);
767 au_sync();
768 lcd->winenable &= ~(1 << plane);
769 lcd->window[plane].winctrl0 = winctrl0;
770 lcd->window[plane].winctrl1 = winctrl1;
771 lcd->window[plane].winbuf0 =
772 lcd->window[plane].winbuf1 = fbdev->fb_phys;
773 lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
774 lcd->winenable |= winenable;
775 au_sync();
776
777 return 0;
778 }
779
780 static void au1200_setpanel(struct panel_settings *newpanel,
781 struct au1200fb_platdata *pd)
782 {
783 /*
784 * Perform global setup/init of LCD controller
785 */
786 uint32 winenable;
787
788 /* Make sure all windows disabled */
789 winenable = lcd->winenable;
790 lcd->winenable = 0;
791 au_sync();
792 /*
793 * Ensure everything is disabled before reconfiguring
794 */
795 if (lcd->screen & LCD_SCREEN_SEN) {
796 /* Wait for vertical sync period */
797 lcd->intstatus = LCD_INT_SS;
798 while ((lcd->intstatus & LCD_INT_SS) == 0) {
799 au_sync();
800 }
801
802 lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/
803
804 do {
805 lcd->intstatus = lcd->intstatus; /*clear interrupts*/
806 au_sync();
807 /*wait for controller to shut down*/
808 } while ((lcd->intstatus & LCD_INT_SD) == 0);
809
810 /* Call shutdown of current panel (if up) */
811 /* this must occur last, because if an external clock is driving
812 the controller, the clock cannot be turned off before first
813 shutting down the controller.
814 */
815 if (pd->panel_shutdown)
816 pd->panel_shutdown();
817 }
818
819 /* Newpanel == NULL indicates a shutdown operation only */
820 if (newpanel == NULL)
821 return;
822
823 panel = newpanel;
824
825 printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres);
826
827 /*
828 * Setup clocking if internal LCD clock source (assumes sys_auxpll valid)
829 */
830 if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
831 {
832 uint32 sys_clksrc;
833 au_writel(panel->mode_auxpll, SYS_AUXPLL);
834 sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f;
835 sys_clksrc |= panel->mode_toyclksrc;
836 au_writel(sys_clksrc, SYS_CLKSRC);
837 }
838
839 /*
840 * Configure panel timings
841 */
842 lcd->screen = panel->mode_screen;
843 lcd->horztiming = panel->mode_horztiming;
844 lcd->verttiming = panel->mode_verttiming;
845 lcd->clkcontrol = panel->mode_clkcontrol;
846 lcd->pwmdiv = panel->mode_pwmdiv;
847 lcd->pwmhi = panel->mode_pwmhi;
848 lcd->outmask = panel->mode_outmask;
849 lcd->fifoctrl = panel->mode_fifoctrl;
850 au_sync();
851
852 /* fixme: Check window settings to make sure still valid
853 * for new geometry */
854 #if 0
855 au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos);
856 au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos);
857 au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos);
858 au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos);
859 #endif
860 lcd->winenable = winenable;
861
862 /*
863 * Re-enable screen now that it is configured
864 */
865 lcd->screen |= LCD_SCREEN_SEN;
866 au_sync();
867
868 /* Call init of panel */
869 if (pd->panel_init)
870 pd->panel_init();
871
872 /* FIX!!!! not appropriate on panel change!!! Global setup/init */
873 lcd->intenable = 0;
874 lcd->intstatus = ~0;
875 lcd->backcolor = win->mode_backcolor;
876
877 /* Setup Color Key - FIX!!! */
878 lcd->colorkey = win->mode_colorkey;
879 lcd->colorkeymsk = win->mode_colorkeymsk;
880
881 /* Setup HWCursor - FIX!!! Need to support this eventually */
882 lcd->hwc.cursorctrl = 0;
883 lcd->hwc.cursorpos = 0;
884 lcd->hwc.cursorcolor0 = 0;
885 lcd->hwc.cursorcolor1 = 0;
886 lcd->hwc.cursorcolor2 = 0;
887 lcd->hwc.cursorcolor3 = 0;
888
889
890 #if 0
891 #define D(X) printk("%25s: %08X\n", #X, X)
892 D(lcd->screen);
893 D(lcd->horztiming);
894 D(lcd->verttiming);
895 D(lcd->clkcontrol);
896 D(lcd->pwmdiv);
897 D(lcd->pwmhi);
898 D(lcd->outmask);
899 D(lcd->fifoctrl);
900 D(lcd->window[0].winctrl0);
901 D(lcd->window[0].winctrl1);
902 D(lcd->window[0].winctrl2);
903 D(lcd->window[0].winbuf0);
904 D(lcd->window[0].winbuf1);
905 D(lcd->window[0].winbufctrl);
906 D(lcd->window[1].winctrl0);
907 D(lcd->window[1].winctrl1);
908 D(lcd->window[1].winctrl2);
909 D(lcd->window[1].winbuf0);
910 D(lcd->window[1].winbuf1);
911 D(lcd->window[1].winbufctrl);
912 D(lcd->window[2].winctrl0);
913 D(lcd->window[2].winctrl1);
914 D(lcd->window[2].winctrl2);
915 D(lcd->window[2].winbuf0);
916 D(lcd->window[2].winbuf1);
917 D(lcd->window[2].winbufctrl);
918 D(lcd->window[3].winctrl0);
919 D(lcd->window[3].winctrl1);
920 D(lcd->window[3].winctrl2);
921 D(lcd->window[3].winbuf0);
922 D(lcd->window[3].winbuf1);
923 D(lcd->window[3].winbufctrl);
924 D(lcd->winenable);
925 D(lcd->intenable);
926 D(lcd->intstatus);
927 D(lcd->backcolor);
928 D(lcd->winenable);
929 D(lcd->colorkey);
930 D(lcd->colorkeymsk);
931 D(lcd->hwc.cursorctrl);
932 D(lcd->hwc.cursorpos);
933 D(lcd->hwc.cursorcolor0);
934 D(lcd->hwc.cursorcolor1);
935 D(lcd->hwc.cursorcolor2);
936 D(lcd->hwc.cursorcolor3);
937 #endif
938 }
939
940 static void au1200_setmode(struct au1200fb_device *fbdev)
941 {
942 int plane = fbdev->plane;
943 /* Window/plane setup */
944 lcd->window[plane].winctrl1 = ( 0
945 | LCD_WINCTRL1_PRI_N(plane)
946 | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */
947 ) ;
948
949 au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos);
950
951 lcd->window[plane].winctrl2 = ( 0
952 | LCD_WINCTRL2_CKMODE_00
953 | LCD_WINCTRL2_DBM
954 | LCD_WINCTRL2_BX_N(fbdev->fb_info->fix.line_length)
955 | LCD_WINCTRL2_SCX_1
956 | LCD_WINCTRL2_SCY_1
957 ) ;
958 lcd->winenable |= win->w[plane].mode_winenable;
959 au_sync();
960 }
961
962
963 /* Inline helpers */
964
965 /*#define panel_is_dual(panel) ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
966 /*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
967
968 #define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN)
969
970 /* Bitfields format supported by the controller. */
971 static struct fb_bitfield rgb_bitfields[][4] = {
972 /* Red, Green, Blue, Transp */
973 [LCD_WINCTRL1_FRM_16BPP655 >> 25] =
974 { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
975
976 [LCD_WINCTRL1_FRM_16BPP565 >> 25] =
977 { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
978
979 [LCD_WINCTRL1_FRM_16BPP556 >> 25] =
980 { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } },
981
982 [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] =
983 { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
984
985 [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] =
986 { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } },
987
988 [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] =
989 { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } },
990
991 [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] =
992 { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } },
993
994 [LCD_WINCTRL1_FRM_24BPP >> 25] =
995 { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } },
996
997 [LCD_WINCTRL1_FRM_32BPP >> 25] =
998 { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } },
999 };
1000
1001 /*-------------------------------------------------------------------------*/
1002
1003 /* Helpers */
1004
1005 static void au1200fb_update_fbinfo(struct fb_info *fbi)
1006 {
1007 /* FIX!!!! This also needs to take the window pixel format into account!!! */
1008
1009 /* Update var-dependent FB info */
1010 if (panel_is_color(panel)) {
1011 if (fbi->var.bits_per_pixel <= 8) {
1012 /* palettized */
1013 fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1014 fbi->fix.line_length = fbi->var.xres_virtual /
1015 (8/fbi->var.bits_per_pixel);
1016 } else {
1017 /* non-palettized */
1018 fbi->fix.visual = FB_VISUAL_TRUECOLOR;
1019 fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8);
1020 }
1021 } else {
1022 /* mono FIX!!! mono 8 and 4 bits */
1023 fbi->fix.visual = FB_VISUAL_MONO10;
1024 fbi->fix.line_length = fbi->var.xres_virtual / 8;
1025 }
1026
1027 fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual;
1028 print_dbg("line length: %d\n", fbi->fix.line_length);
1029 print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel);
1030 }
1031
1032 /*-------------------------------------------------------------------------*/
1033
1034 /* AU1200 framebuffer driver */
1035
1036 /* fb_check_var
1037 * Validate var settings with hardware restrictions and modify it if necessary
1038 */
1039 static int au1200fb_fb_check_var(struct fb_var_screeninfo *var,
1040 struct fb_info *fbi)
1041 {
1042 struct au1200fb_device *fbdev = fbi->par;
1043 u32 pixclock;
1044 int screen_size, plane;
1045
1046 plane = fbdev->plane;
1047
1048 /* Make sure that the mode respect all LCD controller and
1049 * panel restrictions. */
1050 var->xres = win->w[plane].xres;
1051 var->yres = win->w[plane].yres;
1052
1053 /* No need for virtual resolution support */
1054 var->xres_virtual = var->xres;
1055 var->yres_virtual = var->yres;
1056
1057 var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1);
1058
1059 screen_size = var->xres_virtual * var->yres_virtual;
1060 if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8);
1061 else screen_size /= (8/var->bits_per_pixel);
1062
1063 if (fbdev->fb_len < screen_size)
1064 return -EINVAL; /* Virtual screen is to big, abort */
1065
1066 /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */
1067 /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel
1068 * clock can only be obtain by dividing this value by an even integer.
1069 * Fallback to a slower pixel clock if necessary. */
1070 pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin);
1071 pixclock = min3(pixclock, fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2);
1072
1073 if (AU1200_LCD_MAX_CLK % pixclock) {
1074 int diff = AU1200_LCD_MAX_CLK % pixclock;
1075 pixclock -= diff;
1076 }
1077
1078 var->pixclock = KHZ2PICOS(pixclock/1000);
1079 #if 0
1080 if (!panel_is_active(panel)) {
1081 int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1;
1082
1083 if (!panel_is_color(panel)
1084 && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) {
1085 /* STN 8bit mono panel support is up to 6MHz pixclock */
1086 var->pixclock = KHZ2PICOS(6000);
1087 } else if (!pcd) {
1088 /* Other STN panel support is up to 12MHz */
1089 var->pixclock = KHZ2PICOS(12000);
1090 }
1091 }
1092 #endif
1093 /* Set bitfield accordingly */
1094 switch (var->bits_per_pixel) {
1095 case 16:
1096 {
1097 /* 16bpp True color.
1098 * These must be set to MATCH WINCTRL[FORM] */
1099 int idx;
1100 idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1101 var->red = rgb_bitfields[idx][0];
1102 var->green = rgb_bitfields[idx][1];
1103 var->blue = rgb_bitfields[idx][2];
1104 var->transp = rgb_bitfields[idx][3];
1105 break;
1106 }
1107
1108 case 32:
1109 {
1110 /* 32bpp True color.
1111 * These must be set to MATCH WINCTRL[FORM] */
1112 int idx;
1113 idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1114 var->red = rgb_bitfields[idx][0];
1115 var->green = rgb_bitfields[idx][1];
1116 var->blue = rgb_bitfields[idx][2];
1117 var->transp = rgb_bitfields[idx][3];
1118 break;
1119 }
1120 default:
1121 print_dbg("Unsupported depth %dbpp", var->bits_per_pixel);
1122 return -EINVAL;
1123 }
1124
1125 return 0;
1126 }
1127
1128 /* fb_set_par
1129 * Set hardware with var settings. This will enable the controller with a
1130 * specific mode, normally validated with the fb_check_var method
1131 */
1132 static int au1200fb_fb_set_par(struct fb_info *fbi)
1133 {
1134 struct au1200fb_device *fbdev = fbi->par;
1135
1136 au1200fb_update_fbinfo(fbi);
1137 au1200_setmode(fbdev);
1138
1139 return 0;
1140 }
1141
1142 /* fb_setcolreg
1143 * Set color in LCD palette.
1144 */
1145 static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
1146 unsigned blue, unsigned transp, struct fb_info *fbi)
1147 {
1148 volatile u32 *palette = lcd->palette;
1149 u32 value;
1150
1151 if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1))
1152 return -EINVAL;
1153
1154 if (fbi->var.grayscale) {
1155 /* Convert color to grayscale */
1156 red = green = blue =
1157 (19595 * red + 38470 * green + 7471 * blue) >> 16;
1158 }
1159
1160 if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) {
1161 /* Place color in the pseudopalette */
1162 if (regno > 16)
1163 return -EINVAL;
1164
1165 palette = (u32*) fbi->pseudo_palette;
1166
1167 red >>= (16 - fbi->var.red.length);
1168 green >>= (16 - fbi->var.green.length);
1169 blue >>= (16 - fbi->var.blue.length);
1170
1171 value = (red << fbi->var.red.offset) |
1172 (green << fbi->var.green.offset)|
1173 (blue << fbi->var.blue.offset);
1174 value &= 0xFFFF;
1175
1176 } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) {
1177 /* COLOR TFT PALLETTIZED (use RGB 565) */
1178 value = (red & 0xF800)|((green >> 5) &
1179 0x07E0)|((blue >> 11) & 0x001F);
1180 value &= 0xFFFF;
1181
1182 } else if (0 /*panel_is_color(fbdev->panel)*/) {
1183 /* COLOR STN MODE */
1184 value = 0x1234;
1185 value &= 0xFFF;
1186 } else {
1187 /* MONOCHROME MODE */
1188 value = (green >> 12) & 0x000F;
1189 value &= 0xF;
1190 }
1191
1192 palette[regno] = value;
1193
1194 return 0;
1195 }
1196
1197 /* fb_blank
1198 * Blank the screen. Depending on the mode, the screen will be
1199 * activated with the backlight color, or desactivated
1200 */
1201 static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi)
1202 {
1203 struct au1200fb_device *fbdev = fbi->par;
1204
1205 /* Short-circuit screen blanking */
1206 if (noblanking)
1207 return 0;
1208
1209 switch (blank_mode) {
1210
1211 case FB_BLANK_UNBLANK:
1212 case FB_BLANK_NORMAL:
1213 /* printk("turn on panel\n"); */
1214 au1200_setpanel(panel, fbdev->pd);
1215 break;
1216 case FB_BLANK_VSYNC_SUSPEND:
1217 case FB_BLANK_HSYNC_SUSPEND:
1218 case FB_BLANK_POWERDOWN:
1219 /* printk("turn off panel\n"); */
1220 au1200_setpanel(NULL, fbdev->pd);
1221 break;
1222 default:
1223 break;
1224
1225 }
1226
1227 /* FB_BLANK_NORMAL is a soft blank */
1228 return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0;
1229 }
1230
1231 /* fb_mmap
1232 * Map video memory in user space. We don't use the generic fb_mmap
1233 * method mainly to allow the use of the TLB streaming flag (CCA=6)
1234 */
1235 static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1236
1237 {
1238 unsigned int len;
1239 unsigned long start=0, off;
1240 struct au1200fb_device *fbdev = info->par;
1241
1242 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) {
1243 return -EINVAL;
1244 }
1245
1246 start = fbdev->fb_phys & PAGE_MASK;
1247 len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len);
1248
1249 off = vma->vm_pgoff << PAGE_SHIFT;
1250
1251 if ((vma->vm_end - vma->vm_start + off) > len) {
1252 return -EINVAL;
1253 }
1254
1255 off += start;
1256 vma->vm_pgoff = off >> PAGE_SHIFT;
1257
1258 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1259 pgprot_val(vma->vm_page_prot) |= _CACHE_MASK; /* CCA=7 */
1260
1261 vma->vm_flags |= VM_IO;
1262
1263 return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1264 vma->vm_end - vma->vm_start,
1265 vma->vm_page_prot);
1266
1267 return 0;
1268 }
1269
1270 static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
1271 {
1272
1273 unsigned int hi1, divider;
1274
1275 /* SCREEN_SIZE: user cannot reset size, must switch panel choice */
1276
1277 if (pdata->flags & SCREEN_BACKCOLOR)
1278 lcd->backcolor = pdata->backcolor;
1279
1280 if (pdata->flags & SCREEN_BRIGHTNESS) {
1281
1282 // limit brightness pwm duty to >= 30/1600
1283 if (pdata->brightness < 30) {
1284 pdata->brightness = 30;
1285 }
1286 divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1287 hi1 = (lcd->pwmhi >> 16) + 1;
1288 hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8);
1289 lcd->pwmhi &= 0xFFFF;
1290 lcd->pwmhi |= (hi1 << 16);
1291 }
1292
1293 if (pdata->flags & SCREEN_COLORKEY)
1294 lcd->colorkey = pdata->colorkey;
1295
1296 if (pdata->flags & SCREEN_MASK)
1297 lcd->colorkeymsk = pdata->mask;
1298 au_sync();
1299 }
1300
1301 static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
1302 {
1303 unsigned int hi1, divider;
1304
1305 pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1;
1306 pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1;
1307
1308 pdata->backcolor = lcd->backcolor;
1309 pdata->colorkey = lcd->colorkey;
1310 pdata->mask = lcd->colorkeymsk;
1311
1312 // brightness
1313 hi1 = (lcd->pwmhi >> 16) + 1;
1314 divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1315 pdata->brightness = ((hi1 << 8) / divider) - 1;
1316 au_sync();
1317 }
1318
1319 static void set_window(unsigned int plane,
1320 struct au1200_lcd_window_regs_t *pdata)
1321 {
1322 unsigned int val, bpp;
1323
1324 /* Window control register 0 */
1325 if (pdata->flags & WIN_POSITION) {
1326 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX |
1327 LCD_WINCTRL0_OY);
1328 val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX);
1329 val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY);
1330 lcd->window[plane].winctrl0 = val;
1331 }
1332 if (pdata->flags & WIN_ALPHA_COLOR) {
1333 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A);
1334 val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A);
1335 lcd->window[plane].winctrl0 = val;
1336 }
1337 if (pdata->flags & WIN_ALPHA_MODE) {
1338 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN);
1339 val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN);
1340 lcd->window[plane].winctrl0 = val;
1341 }
1342
1343 /* Window control register 1 */
1344 if (pdata->flags & WIN_PRIORITY) {
1345 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI);
1346 val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI);
1347 lcd->window[plane].winctrl1 = val;
1348 }
1349 if (pdata->flags & WIN_CHANNEL) {
1350 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE);
1351 val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE);
1352 lcd->window[plane].winctrl1 = val;
1353 }
1354 if (pdata->flags & WIN_BUFFER_FORMAT) {
1355 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM);
1356 val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM);
1357 lcd->window[plane].winctrl1 = val;
1358 }
1359 if (pdata->flags & WIN_COLOR_ORDER) {
1360 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO);
1361 val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO);
1362 lcd->window[plane].winctrl1 = val;
1363 }
1364 if (pdata->flags & WIN_PIXEL_ORDER) {
1365 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO);
1366 val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO);
1367 lcd->window[plane].winctrl1 = val;
1368 }
1369 if (pdata->flags & WIN_SIZE) {
1370 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX |
1371 LCD_WINCTRL1_SZY);
1372 val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX);
1373 val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY);
1374 lcd->window[plane].winctrl1 = val;
1375 /* program buffer line width */
1376 bpp = winbpp(val) / 8;
1377 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX);
1378 val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX);
1379 lcd->window[plane].winctrl2 = val;
1380 }
1381
1382 /* Window control register 2 */
1383 if (pdata->flags & WIN_COLORKEY_MODE) {
1384 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE);
1385 val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE);
1386 lcd->window[plane].winctrl2 = val;
1387 }
1388 if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) {
1389 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM);
1390 val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM);
1391 lcd->window[plane].winctrl2 = val;
1392 }
1393 if (pdata->flags & WIN_RAM_ARRAY_MODE) {
1394 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM);
1395 val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM);
1396 lcd->window[plane].winctrl2 = val;
1397 }
1398
1399 /* Buffer line width programmed with WIN_SIZE */
1400
1401 if (pdata->flags & WIN_BUFFER_SCALE) {
1402 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX |
1403 LCD_WINCTRL2_SCY);
1404 val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX);
1405 val |= ((pdata->ysize) & LCD_WINCTRL2_SCY);
1406 lcd->window[plane].winctrl2 = val;
1407 }
1408
1409 if (pdata->flags & WIN_ENABLE) {
1410 val = lcd->winenable;
1411 val &= ~(1<<plane);
1412 val |= (pdata->enable & 1) << plane;
1413 lcd->winenable = val;
1414 }
1415 au_sync();
1416 }
1417
1418 static void get_window(unsigned int plane,
1419 struct au1200_lcd_window_regs_t *pdata)
1420 {
1421 /* Window control register 0 */
1422 pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21;
1423 pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10;
1424 pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2;
1425 pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1;
1426
1427 /* Window control register 1 */
1428 pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30;
1429 pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29;
1430 pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1431 pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24;
1432 pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22;
1433 pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1;
1434 pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1;
1435
1436 /* Window control register 2 */
1437 pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24;
1438 pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23;
1439 pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;
1440
1441 pdata->enable = (lcd->winenable >> plane) & 1;
1442 au_sync();
1443 }
1444
1445 static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
1446 unsigned long arg)
1447 {
1448 struct au1200fb_device *fbdev = info->par;
1449 int plane;
1450 int val;
1451
1452 plane = fbinfo2index(info);
1453 print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane);
1454
1455 if (cmd == AU1200_LCD_FB_IOCTL) {
1456 struct au1200_lcd_iodata_t iodata;
1457
1458 if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata)))
1459 return -EFAULT;
1460
1461 print_dbg("FB IOCTL called\n");
1462
1463 switch (iodata.subcmd) {
1464 case AU1200_LCD_SET_SCREEN:
1465 print_dbg("AU1200_LCD_SET_SCREEN\n");
1466 set_global(cmd, &iodata.global);
1467 break;
1468
1469 case AU1200_LCD_GET_SCREEN:
1470 print_dbg("AU1200_LCD_GET_SCREEN\n");
1471 get_global(cmd, &iodata.global);
1472 break;
1473
1474 case AU1200_LCD_SET_WINDOW:
1475 print_dbg("AU1200_LCD_SET_WINDOW\n");
1476 set_window(plane, &iodata.window);
1477 break;
1478
1479 case AU1200_LCD_GET_WINDOW:
1480 print_dbg("AU1200_LCD_GET_WINDOW\n");
1481 get_window(plane, &iodata.window);
1482 break;
1483
1484 case AU1200_LCD_SET_PANEL:
1485 print_dbg("AU1200_LCD_SET_PANEL\n");
1486 if ((iodata.global.panel_choice >= 0) &&
1487 (iodata.global.panel_choice <
1488 NUM_PANELS))
1489 {
1490 struct panel_settings *newpanel;
1491 panel_index = iodata.global.panel_choice;
1492 newpanel = &known_lcd_panels[panel_index];
1493 au1200_setpanel(newpanel, fbdev->pd);
1494 }
1495 break;
1496
1497 case AU1200_LCD_GET_PANEL:
1498 print_dbg("AU1200_LCD_GET_PANEL\n");
1499 iodata.global.panel_choice = panel_index;
1500 break;
1501
1502 default:
1503 return -EINVAL;
1504 }
1505
1506 val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata));
1507 if (val) {
1508 print_dbg("error: could not copy %d bytes\n", val);
1509 return -EFAULT;
1510 }
1511 }
1512
1513 return 0;
1514 }
1515
1516
1517 static struct fb_ops au1200fb_fb_ops = {
1518 .owner = THIS_MODULE,
1519 .fb_check_var = au1200fb_fb_check_var,
1520 .fb_set_par = au1200fb_fb_set_par,
1521 .fb_setcolreg = au1200fb_fb_setcolreg,
1522 .fb_blank = au1200fb_fb_blank,
1523 .fb_fillrect = sys_fillrect,
1524 .fb_copyarea = sys_copyarea,
1525 .fb_imageblit = sys_imageblit,
1526 .fb_read = fb_sys_read,
1527 .fb_write = fb_sys_write,
1528 .fb_sync = NULL,
1529 .fb_ioctl = au1200fb_ioctl,
1530 .fb_mmap = au1200fb_fb_mmap,
1531 };
1532
1533 /*-------------------------------------------------------------------------*/
1534
1535 static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id)
1536 {
1537 /* Nothing to do for now, just clear any pending interrupt */
1538 lcd->intstatus = lcd->intstatus;
1539 au_sync();
1540
1541 return IRQ_HANDLED;
1542 }
1543
1544 /*-------------------------------------------------------------------------*/
1545
1546 /* AU1200 LCD device probe helpers */
1547
1548 static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
1549 {
1550 struct fb_info *fbi = fbdev->fb_info;
1551 int bpp;
1552
1553 fbi->fbops = &au1200fb_fb_ops;
1554
1555 bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);
1556
1557 /* Copy monitor specs from panel data */
1558 /* fixme: we're setting up LCD controller windows, so these dont give a
1559 damn as to what the monitor specs are (the panel itself does, but that
1560 isn't done here...so maybe need a generic catchall monitor setting??? */
1561 memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs));
1562
1563 /* We first try the user mode passed in argument. If that failed,
1564 * or if no one has been specified, we default to the first mode of the
1565 * panel list. Note that after this call, var data will be set */
1566 if (!fb_find_mode(&fbi->var,
1567 fbi,
1568 NULL, /* drv_info.opt_mode, */
1569 fbi->monspecs.modedb,
1570 fbi->monspecs.modedb_len,
1571 fbi->monspecs.modedb,
1572 bpp)) {
1573
1574 print_err("Cannot find valid mode for panel %s", panel->name);
1575 return -EFAULT;
1576 }
1577
1578 fbi->pseudo_palette = kcalloc(16, sizeof(u32), GFP_KERNEL);
1579 if (!fbi->pseudo_palette) {
1580 return -ENOMEM;
1581 }
1582
1583 if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
1584 print_err("Fail to allocate colormap (%d entries)",
1585 AU1200_LCD_NBR_PALETTE_ENTRIES);
1586 kfree(fbi->pseudo_palette);
1587 return -EFAULT;
1588 }
1589
1590 strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id));
1591 fbi->fix.smem_start = fbdev->fb_phys;
1592 fbi->fix.smem_len = fbdev->fb_len;
1593 fbi->fix.type = FB_TYPE_PACKED_PIXELS;
1594 fbi->fix.xpanstep = 0;
1595 fbi->fix.ypanstep = 0;
1596 fbi->fix.mmio_start = 0;
1597 fbi->fix.mmio_len = 0;
1598 fbi->fix.accel = FB_ACCEL_NONE;
1599
1600 fbi->screen_base = (char __iomem *) fbdev->fb_mem;
1601
1602 au1200fb_update_fbinfo(fbi);
1603
1604 return 0;
1605 }
1606
1607 /*-------------------------------------------------------------------------*/
1608
1609
1610 static int au1200fb_setup(struct au1200fb_platdata *pd)
1611 {
1612 char *options = NULL;
1613 char *this_opt, *endptr;
1614 int num_panels = ARRAY_SIZE(known_lcd_panels);
1615 int panel_idx = -1;
1616
1617 fb_get_options(DRIVER_NAME, &options);
1618
1619 if (!options)
1620 goto out;
1621
1622 while ((this_opt = strsep(&options, ",")) != NULL) {
1623 /* Panel option - can be panel name,
1624 * "bs" for board-switch, or number/index */
1625 if (!strncmp(this_opt, "panel:", 6)) {
1626 int i;
1627 long int li;
1628 char *endptr;
1629 this_opt += 6;
1630 /* First check for index, which allows
1631 * to short circuit this mess */
1632 li = simple_strtol(this_opt, &endptr, 0);
1633 if (*endptr == '\0')
1634 panel_idx = (int)li;
1635 else if (strcmp(this_opt, "bs") == 0)
1636 panel_idx = pd->panel_index();
1637 else {
1638 for (i = 0; i < num_panels; i++) {
1639 if (!strcmp(this_opt,
1640 known_lcd_panels[i].name)) {
1641 panel_idx = i;
1642 break;
1643 }
1644 }
1645 }
1646 if ((panel_idx < 0) || (panel_idx >= num_panels))
1647 print_warn("Panel %s not supported!", this_opt);
1648 else
1649 panel_index = panel_idx;
1650
1651 } else if (strncmp(this_opt, "nohwcursor", 10) == 0)
1652 nohwcursor = 1;
1653 else if (strncmp(this_opt, "devices:", 8) == 0) {
1654 this_opt += 8;
1655 device_count = simple_strtol(this_opt, &endptr, 0);
1656 if ((device_count < 0) ||
1657 (device_count > MAX_DEVICE_COUNT))
1658 device_count = MAX_DEVICE_COUNT;
1659 } else if (strncmp(this_opt, "wincfg:", 7) == 0) {
1660 this_opt += 7;
1661 window_index = simple_strtol(this_opt, &endptr, 0);
1662 if ((window_index < 0) ||
1663 (window_index >= ARRAY_SIZE(windows)))
1664 window_index = DEFAULT_WINDOW_INDEX;
1665 } else if (strncmp(this_opt, "off", 3) == 0)
1666 return 1;
1667 else
1668 print_warn("Unsupported option \"%s\"", this_opt);
1669 }
1670
1671 out:
1672 return 0;
1673 }
1674
1675 /* AU1200 LCD controller device driver */
1676 static int __devinit au1200fb_drv_probe(struct platform_device *dev)
1677 {
1678 struct au1200fb_device *fbdev;
1679 struct au1200fb_platdata *pd;
1680 struct fb_info *fbi = NULL;
1681 unsigned long page;
1682 int bpp, plane, ret, irq;
1683
1684 print_info("" DRIVER_DESC "");
1685
1686 pd = dev->dev.platform_data;
1687 if (!pd)
1688 return -ENODEV;
1689
1690 /* Setup driver with options */
1691 if (au1200fb_setup(pd))
1692 return -ENODEV;
1693
1694 /* Point to the panel selected */
1695 panel = &known_lcd_panels[panel_index];
1696 win = &windows[window_index];
1697
1698 printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name);
1699 printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name);
1700
1701 /* shut gcc up */
1702 ret = 0;
1703 fbdev = NULL;
1704
1705 for (plane = 0; plane < device_count; ++plane) {
1706 bpp = winbpp(win->w[plane].mode_winctrl1);
1707 if (win->w[plane].xres == 0)
1708 win->w[plane].xres = panel->Xres;
1709 if (win->w[plane].yres == 0)
1710 win->w[plane].yres = panel->Yres;
1711
1712 fbi = framebuffer_alloc(sizeof(struct au1200fb_device),
1713 &dev->dev);
1714 if (!fbi)
1715 goto failed;
1716
1717 _au1200fb_infos[plane] = fbi;
1718 fbdev = fbi->par;
1719 fbdev->fb_info = fbi;
1720 fbdev->pd = pd;
1721
1722 fbdev->plane = plane;
1723
1724 /* Allocate the framebuffer to the maximum screen size */
1725 fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8;
1726
1727 fbdev->fb_mem = dmam_alloc_noncoherent(&dev->dev,
1728 PAGE_ALIGN(fbdev->fb_len),
1729 &fbdev->fb_phys, GFP_KERNEL);
1730 if (!fbdev->fb_mem) {
1731 print_err("fail to allocate frambuffer (size: %dK))",
1732 fbdev->fb_len / 1024);
1733 return -ENOMEM;
1734 }
1735
1736 /*
1737 * Set page reserved so that mmap will work. This is necessary
1738 * since we'll be remapping normal memory.
1739 */
1740 for (page = (unsigned long)fbdev->fb_phys;
1741 page < PAGE_ALIGN((unsigned long)fbdev->fb_phys +
1742 fbdev->fb_len);
1743 page += PAGE_SIZE) {
1744 SetPageReserved(pfn_to_page(page >> PAGE_SHIFT)); /* LCD DMA is NOT coherent on Au1200 */
1745 }
1746 print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
1747 print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
1748
1749 /* Init FB data */
1750 if ((ret = au1200fb_init_fbinfo(fbdev)) < 0)
1751 goto failed;
1752
1753 /* Register new framebuffer */
1754 ret = register_framebuffer(fbi);
1755 if (ret < 0) {
1756 print_err("cannot register new framebuffer");
1757 goto failed;
1758 }
1759
1760 au1200fb_fb_set_par(fbi);
1761
1762 #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
1763 if (plane == 0)
1764 if (fb_prepare_logo(fbi, FB_ROTATE_UR)) {
1765 /* Start display and show logo on boot */
1766 fb_set_cmap(&fbi->cmap, fbi);
1767 fb_show_logo(fbi, FB_ROTATE_UR);
1768 }
1769 #endif
1770 }
1771
1772 /* Now hook interrupt too */
1773 irq = platform_get_irq(dev, 0);
1774 ret = request_irq(irq, au1200fb_handle_irq,
1775 IRQF_SHARED, "lcd", (void *)dev);
1776 if (ret) {
1777 print_err("fail to request interrupt line %d (err: %d)",
1778 irq, ret);
1779 goto failed;
1780 }
1781
1782 platform_set_drvdata(dev, pd);
1783
1784 /* Kickstart the panel */
1785 au1200_setpanel(panel, pd);
1786
1787 return 0;
1788
1789 failed:
1790 /* NOTE: This only does the current plane/window that failed; others are still active */
1791 if (fbi) {
1792 if (fbi->cmap.len != 0)
1793 fb_dealloc_cmap(&fbi->cmap);
1794 kfree(fbi->pseudo_palette);
1795 }
1796 if (plane == 0)
1797 free_irq(AU1200_LCD_INT, (void*)dev);
1798 return ret;
1799 }
1800
1801 static int __devexit au1200fb_drv_remove(struct platform_device *dev)
1802 {
1803 struct au1200fb_platdata *pd = platform_get_drvdata(dev);
1804 struct au1200fb_device *fbdev;
1805 struct fb_info *fbi;
1806 int plane;
1807
1808 /* Turn off the panel */
1809 au1200_setpanel(NULL, pd);
1810
1811 for (plane = 0; plane < device_count; ++plane) {
1812 fbi = _au1200fb_infos[plane];
1813 fbdev = fbi->par;
1814
1815 /* Clean up all probe data */
1816 unregister_framebuffer(fbi);
1817 if (fbi->cmap.len != 0)
1818 fb_dealloc_cmap(&fbi->cmap);
1819 kfree(fbi->pseudo_palette);
1820
1821 framebuffer_release(fbi);
1822 _au1200fb_infos[plane] = NULL;
1823 }
1824
1825 free_irq(platform_get_irq(dev, 0), (void *)dev);
1826
1827 return 0;
1828 }
1829
1830 #ifdef CONFIG_PM
1831 static int au1200fb_drv_suspend(struct device *dev)
1832 {
1833 struct au1200fb_platdata *pd = dev_get_drvdata(dev);
1834 au1200_setpanel(NULL, pd);
1835
1836 lcd->outmask = 0;
1837 au_sync();
1838
1839 return 0;
1840 }
1841
1842 static int au1200fb_drv_resume(struct device *dev)
1843 {
1844 struct au1200fb_platdata *pd = dev_get_drvdata(dev);
1845 struct fb_info *fbi;
1846 int i;
1847
1848 /* Kickstart the panel */
1849 au1200_setpanel(panel, pd);
1850
1851 for (i = 0; i < device_count; i++) {
1852 fbi = _au1200fb_infos[i];
1853 au1200fb_fb_set_par(fbi);
1854 }
1855
1856 return 0;
1857 }
1858
1859 static const struct dev_pm_ops au1200fb_pmops = {
1860 .suspend = au1200fb_drv_suspend,
1861 .resume = au1200fb_drv_resume,
1862 .freeze = au1200fb_drv_suspend,
1863 .thaw = au1200fb_drv_resume,
1864 };
1865
1866 #define AU1200FB_PMOPS (&au1200fb_pmops)
1867
1868 #else
1869 #define AU1200FB_PMOPS NULL
1870 #endif /* CONFIG_PM */
1871
1872 static struct platform_driver au1200fb_driver = {
1873 .driver = {
1874 .name = "au1200-lcd",
1875 .owner = THIS_MODULE,
1876 .pm = AU1200FB_PMOPS,
1877 },
1878 .probe = au1200fb_drv_probe,
1879 .remove = __devexit_p(au1200fb_drv_remove),
1880 };
1881
1882 /*-------------------------------------------------------------------------*/
1883
1884 static int __init au1200fb_init(void)
1885 {
1886 return platform_driver_register(&au1200fb_driver);
1887 }
1888
1889 static void __exit au1200fb_cleanup(void)
1890 {
1891 platform_driver_unregister(&au1200fb_driver);
1892 }
1893
1894 module_init(au1200fb_init);
1895 module_exit(au1200fb_cleanup);
1896
1897 MODULE_DESCRIPTION(DRIVER_DESC);
1898 MODULE_LICENSE("GPL");
Linux with added FPC-III support