Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
au1200fb.c
Go to the documentation of this file.
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");
Generated on Thu Jan 10 2013 14:39:31 for Linux Kernel by   doxygen 1.8.2