drivers/video/au1200fb.c

   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
  45 #include <asm/mach-au1x00/au1000.h>
  46 #include "au1200fb.h"
  47
  48 #ifdef CONFIG_PM
  49 #include <asm/mach-au1x00/au1xxx_pm.h>
  50 #endif
  51
  52 #ifndef CONFIG_FB_AU1200_DEVS
  53 #define CONFIG_FB_AU1200_DEVS 4
  54 #endif
  55
  56 #define DRIVER_NAME "au1200fb"
  57 #define DRIVER_DESC "LCD controller driver for AU1200 processors"
  58
  59 #define DEBUG 1
  60
  61 #define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg)
  62 #define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg)
  63 #define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg)
  64
  65 #if DEBUG
  66 #define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg)
  67 #else
  68 #define print_dbg(f, arg...) do {} while (0)
  69 #endif
  70
  71
  72 #define AU1200_LCD_FB_IOCTL 0x46FF
  73
  74 #define AU1200_LCD_SET_SCREEN 1
  75 #define AU1200_LCD_GET_SCREEN 2
  76 #define AU1200_LCD_SET_WINDOW 3
  77 #define AU1200_LCD_GET_WINDOW 4
  78 #define AU1200_LCD_SET_PANEL  5
  79 #define AU1200_LCD_GET_PANEL  6
  80
  81 #define SCREEN_SIZE                 (1<< 1)
  82 #define SCREEN_BACKCOLOR    (1<< 2)
  83 #define SCREEN_BRIGHTNESS   (1<< 3)
  84 #define SCREEN_COLORKEY     (1<< 4)
  85 #define SCREEN_MASK         (1<< 5)
  86
  87 struct au1200_lcd_global_regs_t {
  88         unsigned int flags;
  89         unsigned int xsize;
  90         unsigned int ysize;
  91         unsigned int backcolor;
  92         unsigned int brightness;
  93         unsigned int colorkey;
  94         unsigned int mask;
  95         unsigned int panel_choice;
  96         char panel_desc[80];
  97
  98 };
  99
 100 #define WIN_POSITION            (1<< 0)
 101 #define WIN_ALPHA_COLOR         (1<< 1)
 102 #define WIN_ALPHA_MODE          (1<< 2)
 103 #define WIN_PRIORITY            (1<< 3)
 104 #define WIN_CHANNEL             (1<< 4)
 105 #define WIN_BUFFER_FORMAT       (1<< 5)
 106 #define WIN_COLOR_ORDER         (1<< 6)
 107 #define WIN_PIXEL_ORDER         (1<< 7)
 108 #define WIN_SIZE                (1<< 8)
 109 #define WIN_COLORKEY_MODE       (1<< 9)
 110 #define WIN_DOUBLE_BUFFER_MODE  (1<< 10)
 111 #define WIN_RAM_ARRAY_MODE      (1<< 11)
 112 #define WIN_BUFFER_SCALE        (1<< 12)
 113 #define WIN_ENABLE                  (1<< 13)
 114
 115 struct au1200_lcd_window_regs_t {
 116         unsigned int flags;
 117         unsigned int xpos;
 118         unsigned int ypos;
 119         unsigned int alpha_color;
 120         unsigned int alpha_mode;
 121         unsigned int priority;
 122         unsigned int channel;
 123         unsigned int buffer_format;
 124         unsigned int color_order;
 125         unsigned int pixel_order;
 126         unsigned int xsize;
 127         unsigned int ysize;
 128         unsigned int colorkey_mode;
 129         unsigned int double_buffer_mode;
 130         unsigned int ram_array_mode;
 131         unsigned int xscale;
 132         unsigned int yscale;
 133         unsigned int enable;
 134 };
 135
 136
 137 struct au1200_lcd_iodata_t {
 138         unsigned int subcmd;
 139         struct au1200_lcd_global_regs_t global;
 140         struct au1200_lcd_window_regs_t window;
 141 };
 142
 143 #if defined(__BIG_ENDIAN)
 144 #define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11
 145 #else
 146 #define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00
 147 #endif
 148 #define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565
 149
 150 /* Private, per-framebuffer management information (independent of the panel itself) */
 151 struct au1200fb_device {
 152         struct fb_info fb_info;                 /* FB driver info record */
 153
 154         int                                     plane;
 155         unsigned char*          fb_mem;         /* FrameBuffer memory map */
 156         unsigned int            fb_len;
 157         dma_addr_t              fb_phys;
 158 };
 159
 160 static struct au1200fb_device _au1200fb_devices[CONFIG_FB_AU1200_DEVS];
 161 /********************************************************************/
 162
 163 /* LCD controller restrictions */
 164 #define AU1200_LCD_MAX_XRES     1280
 165 #define AU1200_LCD_MAX_YRES     1024
 166 #define AU1200_LCD_MAX_BPP      32
 167 #define AU1200_LCD_MAX_CLK      96000000 /* fixme: this needs to go away ? */
 168 #define AU1200_LCD_NBR_PALETTE_ENTRIES 256
 169
 170 /* Default number of visible screen buffer to allocate */
 171 #define AU1200FB_NBR_VIDEO_BUFFERS 1
 172
 173 /********************************************************************/
 174
 175 static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR;
 176 static int window_index = 2; /* default is zero */
 177 static int panel_index = 2; /* default is zero */
 178 static struct window_settings *win;
 179 static struct panel_settings *panel;
 180 static int noblanking = 1;
 181 static int nohwcursor = 0;
 182
 183 struct window_settings {
 184         unsigned char name[64];
 185         uint32 mode_backcolor;
 186         uint32 mode_colorkey;
 187         uint32 mode_colorkeymsk;
 188         struct {
 189                 int xres;
 190                 int yres;
 191                 int xpos;
 192                 int ypos;
 193                 uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */
 194                 uint32 mode_winenable;
 195         } w[4];
 196 };
 197
 198 #if defined(__BIG_ENDIAN)
 199 #define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00
 200 #else
 201 #define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01
 202 #endif
 203
 204 extern int board_au1200fb_panel_init (void);
 205 extern int board_au1200fb_panel_shutdown (void);
 206
 207 #ifdef CONFIG_PM
 208 int au1200fb_pm_callback(au1xxx_power_dev_t *dev,
 209                 au1xxx_request_t request, void *data);
 210 au1xxx_power_dev_t *LCD_pm_dev;
 211 #endif
 212
 213 /*
 214  * Default window configurations
 215  */
 216 static struct window_settings windows[] = {
 217         { /* Index 0 */
 218                 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
 219                 /* mode_backcolor       */ 0x006600ff,
 220                 /* mode_colorkey,msk*/ 0, 0,
 221                 {
 222                         {
 223                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 224                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 225                                 LCD_WINCTRL1_PO_16BPP,
 226                         /* mode_winenable*/ LCD_WINENABLE_WEN0,
 227                         },
 228                         {
 229                         /* xres, yres, xpos, ypos */ 100, 100, 100, 100,
 230                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 231                                 LCD_WINCTRL1_PO_16BPP |
 232                                 LCD_WINCTRL1_PIPE,
 233                         /* mode_winenable*/ LCD_WINENABLE_WEN1,
 234                         },
 235                         {
 236                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 237                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 238                                 LCD_WINCTRL1_PO_16BPP,
 239                         /* mode_winenable*/ 0,
 240                         },
 241                         {
 242                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 243                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 244                                 LCD_WINCTRL1_PO_16BPP |
 245                                 LCD_WINCTRL1_PIPE,
 246                         /* mode_winenable*/ 0,
 247                         },
 248                 },
 249         },
 250
 251         { /* Index 1 */
 252                 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
 253                 /* mode_backcolor       */ 0x006600ff,
 254                 /* mode_colorkey,msk*/ 0, 0,
 255                 {
 256                         {
 257                         /* xres, yres, xpos, ypos */ 320, 240, 5, 5,
 258                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP |
 259                                 LCD_WINCTRL1_PO_00,
 260                         /* mode_winenable*/ LCD_WINENABLE_WEN0,
 261                         },
 262                         {
 263                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 264                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565
 265                                 | LCD_WINCTRL1_PO_16BPP,
 266                         /* mode_winenable*/ 0,
 267                         },
 268                         {
 269                         /* xres, yres, xpos, ypos */ 100, 100, 0, 0,
 270                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 271                                 LCD_WINCTRL1_PO_16BPP |
 272                                 LCD_WINCTRL1_PIPE,
 273                         /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
 274                         },
 275                         {
 276                         /* xres, yres, xpos, ypos */ 200, 25, 0, 0,
 277                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 278                                 LCD_WINCTRL1_PO_16BPP |
 279                                 LCD_WINCTRL1_PIPE,
 280                         /* mode_winenable*/ 0,
 281                         },
 282                 },
 283         },
 284         { /* Index 2 */
 285                 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
 286                 /* mode_backcolor       */ 0x006600ff,
 287                 /* mode_colorkey,msk*/ 0, 0,
 288                 {
 289                         {
 290                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 291                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 292                                 LCD_WINCTRL1_PO_16BPP,
 293                         /* mode_winenable*/ LCD_WINENABLE_WEN0,
 294                         },
 295                         {
 296                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 297                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 298                                 LCD_WINCTRL1_PO_16BPP,
 299                         /* mode_winenable*/ 0,
 300                         },
 301                         {
 302                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 303                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP |
 304                                 LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE,
 305                         /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
 306                         },
 307                         {
 308                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 309                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 310                                 LCD_WINCTRL1_PO_16BPP |
 311                                 LCD_WINCTRL1_PIPE,
 312                         /* mode_winenable*/ 0,
 313                         },
 314                 },
 315         },
 316         /* Need VGA 640 @ 24bpp, @ 32bpp */
 317         /* Need VGA 800 @ 24bpp, @ 32bpp */
 318         /* Need VGA 1024 @ 24bpp, @ 32bpp */
 319 };
 320
 321 /*
 322  * Controller configurations for various panels.
 323  */
 324
 325 struct panel_settings
 326 {
 327         const char name[25];            /* Full name <vendor>_<model> */
 328
 329         struct  fb_monspecs monspecs;   /* FB monitor specs */
 330
 331         /* panel timings */
 332         uint32 mode_screen;
 333         uint32 mode_horztiming;
 334         uint32 mode_verttiming;
 335         uint32 mode_clkcontrol;
 336         uint32 mode_pwmdiv;
 337         uint32 mode_pwmhi;
 338         uint32 mode_outmask;
 339         uint32 mode_fifoctrl;
 340         uint32 mode_toyclksrc;
 341         uint32 mode_backlight;
 342         uint32 mode_auxpll;
 343         int (*device_init)(void);
 344         int (*device_shutdown)(void);
 345 #define Xres min_xres
 346 #define Yres min_yres
 347         u32     min_xres;               /* Minimum horizontal resolution */
 348         u32     max_xres;               /* Maximum horizontal resolution */
 349         u32     min_yres;               /* Minimum vertical resolution */
 350         u32     max_yres;               /* Maximum vertical resolution */
 351 };
 352
 353 /********************************************************************/
 354 /* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */
 355
 356 /* List of panels known to work with the AU1200 LCD controller.
 357  * To add a new panel, enter the same specifications as the
 358  * Generic_TFT one, and MAKE SURE that it doesn't conflicts
 359  * with the controller restrictions. Restrictions are:
 360  *
 361  * STN color panels: max_bpp <= 12
 362  * STN mono panels: max_bpp <= 4
 363  * TFT panels: max_bpp <= 16
 364  * max_xres <= 800
 365  * max_yres <= 600
 366  */
 367 static struct panel_settings known_lcd_panels[] =
 368 {
 369         [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */
 370                 .name = "QVGA_320x240",
 371                 .monspecs = {
 372                         .modedb = NULL,
 373                         .modedb_len = 0,
 374                         .hfmin = 30000,
 375                         .hfmax = 70000,
 376                         .vfmin = 60,
 377                         .vfmax = 60,
 378                         .dclkmin = 6000000,
 379                         .dclkmax = 28000000,
 380                         .input = FB_DISP_RGB,
 381                 },
 382                 .mode_screen            = LCD_SCREEN_SX_N(320) |
 383                         LCD_SCREEN_SY_N(240),
 384                 .mode_horztiming        = 0x00c4623b,
 385                 .mode_verttiming        = 0x00502814,
 386                 .mode_clkcontrol        = 0x00020002, /* /4=24Mhz */
 387                 .mode_pwmdiv            = 0x00000000,
 388                 .mode_pwmhi             = 0x00000000,
 389                 .mode_outmask   = 0x00FFFFFF,
 390                 .mode_fifoctrl  = 0x2f2f2f2f,
 391                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 392                 .mode_backlight = 0x00000000,
 393                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 394                 .device_init            = NULL,
 395                 .device_shutdown        = NULL,
 396                 320, 320,
 397                 240, 240,
 398         },
 399
 400         [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */
 401                 .name = "VGA_640x480",
 402                 .monspecs = {
 403                         .modedb = NULL,
 404                         .modedb_len = 0,
 405                         .hfmin = 30000,
 406                         .hfmax = 70000,
 407                         .vfmin = 60,
 408                         .vfmax = 60,
 409                         .dclkmin = 6000000,
 410                         .dclkmax = 28000000,
 411                         .input = FB_DISP_RGB,
 412                 },
 413                 .mode_screen            = 0x13f9df80,
 414                 .mode_horztiming        = 0x003c5859,
 415                 .mode_verttiming        = 0x00741201,
 416                 .mode_clkcontrol        = 0x00020001, /* /4=24Mhz */
 417                 .mode_pwmdiv            = 0x00000000,
 418                 .mode_pwmhi             = 0x00000000,
 419                 .mode_outmask   = 0x00FFFFFF,
 420                 .mode_fifoctrl  = 0x2f2f2f2f,
 421                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 422                 .mode_backlight = 0x00000000,
 423                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 424                 .device_init            = NULL,
 425                 .device_shutdown        = NULL,
 426                 640, 480,
 427                 640, 480,
 428         },
 429
 430         [2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */
 431                 .name = "SVGA_800x600",
 432                 .monspecs = {
 433                         .modedb = NULL,
 434                         .modedb_len = 0,
 435                         .hfmin = 30000,
 436                         .hfmax = 70000,
 437                         .vfmin = 60,
 438                         .vfmax = 60,
 439                         .dclkmin = 6000000,
 440                         .dclkmax = 28000000,
 441                         .input = FB_DISP_RGB,
 442                 },
 443                 .mode_screen            = 0x18fa5780,
 444                 .mode_horztiming        = 0x00dc7e77,
 445                 .mode_verttiming        = 0x00584805,
 446                 .mode_clkcontrol        = 0x00020000, /* /2=48Mhz */
 447                 .mode_pwmdiv            = 0x00000000,
 448                 .mode_pwmhi             = 0x00000000,
 449                 .mode_outmask   = 0x00FFFFFF,
 450                 .mode_fifoctrl  = 0x2f2f2f2f,
 451                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 452                 .mode_backlight = 0x00000000,
 453                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 454                 .device_init            = NULL,
 455                 .device_shutdown        = NULL,
 456                 800, 800,
 457                 600, 600,
 458         },
 459
 460         [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */
 461                 .name = "XVGA_1024x768",
 462                 .monspecs = {
 463                         .modedb = NULL,
 464                         .modedb_len = 0,
 465                         .hfmin = 30000,
 466                         .hfmax = 70000,
 467                         .vfmin = 60,
 468                         .vfmax = 60,
 469                         .dclkmin = 6000000,
 470                         .dclkmax = 28000000,
 471                         .input = FB_DISP_RGB,
 472                 },
 473                 .mode_screen            = 0x1ffaff80,
 474                 .mode_horztiming        = 0x007d0e57,
 475                 .mode_verttiming        = 0x00740a01,
 476                 .mode_clkcontrol        = 0x000A0000, /* /1 */
 477                 .mode_pwmdiv            = 0x00000000,
 478                 .mode_pwmhi             = 0x00000000,
 479                 .mode_outmask   = 0x00FFFFFF,
 480                 .mode_fifoctrl  = 0x2f2f2f2f,
 481                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 482                 .mode_backlight = 0x00000000,
 483                 .mode_auxpll            = 6, /* 72MHz AUXPLL */
 484                 .device_init            = NULL,
 485                 .device_shutdown        = NULL,
 486                 1024, 1024,
 487                 768, 768,
 488         },
 489
 490         [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */
 491                 .name = "XVGA_1280x1024",
 492                 .monspecs = {
 493                         .modedb = NULL,
 494                         .modedb_len = 0,
 495                         .hfmin = 30000,
 496                         .hfmax = 70000,
 497                         .vfmin = 60,
 498                         .vfmax = 60,
 499                         .dclkmin = 6000000,
 500                         .dclkmax = 28000000,
 501                         .input = FB_DISP_RGB,
 502                 },
 503                 .mode_screen            = 0x27fbff80,
 504                 .mode_horztiming        = 0x00cdb2c7,
 505                 .mode_verttiming        = 0x00600002,
 506                 .mode_clkcontrol        = 0x000A0000, /* /1 */
 507                 .mode_pwmdiv            = 0x00000000,
 508                 .mode_pwmhi             = 0x00000000,
 509                 .mode_outmask   = 0x00FFFFFF,
 510                 .mode_fifoctrl  = 0x2f2f2f2f,
 511                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 512                 .mode_backlight = 0x00000000,
 513                 .mode_auxpll            = 10, /* 120MHz AUXPLL */
 514                 .device_init            = NULL,
 515                 .device_shutdown        = NULL,
 516                 1280, 1280,
 517                 1024, 1024,
 518         },
 519
 520         [5] = { /* Samsung 1024x768 TFT */
 521                 .name = "Samsung_1024x768_TFT",
 522                 .monspecs = {
 523                         .modedb = NULL,
 524                         .modedb_len = 0,
 525                         .hfmin = 30000,
 526                         .hfmax = 70000,
 527                         .vfmin = 60,
 528                         .vfmax = 60,
 529                         .dclkmin = 6000000,
 530                         .dclkmax = 28000000,
 531                         .input = FB_DISP_RGB,
 532                 },
 533                 .mode_screen            = 0x1ffaff80,
 534                 .mode_horztiming        = 0x018cc677,
 535                 .mode_verttiming        = 0x00241217,
 536                 .mode_clkcontrol        = 0x00000000, /* SCB 0x1 /4=24Mhz */
 537                 .mode_pwmdiv            = 0x8000063f, /* SCB 0x0 */
 538                 .mode_pwmhi             = 0x03400000, /* SCB 0x0 */
 539                 .mode_outmask   = 0x00FFFFFF,
 540                 .mode_fifoctrl  = 0x2f2f2f2f,
 541                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 542                 .mode_backlight = 0x00000000,
 543                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 544                 .device_init            = board_au1200fb_panel_init,
 545                 .device_shutdown        = board_au1200fb_panel_shutdown,
 546                 1024, 1024,
 547                 768, 768,
 548         },
 549
 550         [6] = { /* Toshiba 640x480 TFT */
 551                 .name = "Toshiba_640x480_TFT",
 552                 .monspecs = {
 553                         .modedb = NULL,
 554                         .modedb_len = 0,
 555                         .hfmin = 30000,
 556                         .hfmax = 70000,
 557                         .vfmin = 60,
 558                         .vfmax = 60,
 559                         .dclkmin = 6000000,
 560                         .dclkmax = 28000000,
 561                         .input = FB_DISP_RGB,
 562                 },
 563                 .mode_screen            = LCD_SCREEN_SX_N(640) |
 564                         LCD_SCREEN_SY_N(480),
 565                 .mode_horztiming        = LCD_HORZTIMING_HPW_N(96) |
 566                         LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51),
 567                 .mode_verttiming        = LCD_VERTTIMING_VPW_N(2) |
 568                         LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32),
 569                 .mode_clkcontrol        = 0x00000000, /* /4=24Mhz */
 570                 .mode_pwmdiv            = 0x8000063f,
 571                 .mode_pwmhi             = 0x03400000,
 572                 .mode_outmask   = 0x00fcfcfc,
 573                 .mode_fifoctrl  = 0x2f2f2f2f,
 574                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 575                 .mode_backlight = 0x00000000,
 576                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 577                 .device_init            = board_au1200fb_panel_init,
 578                 .device_shutdown        = board_au1200fb_panel_shutdown,
 579                 640, 480,
 580                 640, 480,
 581         },
 582
 583         [7] = { /* Sharp 320x240 TFT */
 584                 .name = "Sharp_320x240_TFT",
 585                 .monspecs = {
 586                         .modedb = NULL,
 587                         .modedb_len = 0,
 588                         .hfmin = 12500,
 589                         .hfmax = 20000,
 590                         .vfmin = 38,
 591                         .vfmax = 81,
 592                         .dclkmin = 4500000,
 593                         .dclkmax = 6800000,
 594                         .input = FB_DISP_RGB,
 595                 },
 596                 .mode_screen            = LCD_SCREEN_SX_N(320) |
 597                         LCD_SCREEN_SY_N(240),
 598                 .mode_horztiming        = LCD_HORZTIMING_HPW_N(60) |
 599                         LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2),
 600                 .mode_verttiming        = LCD_VERTTIMING_VPW_N(2) |
 601                         LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5),
 602                 .mode_clkcontrol        = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/
 603                 .mode_pwmdiv            = 0x8000063f,
 604                 .mode_pwmhi             = 0x03400000,
 605                 .mode_outmask   = 0x00fcfcfc,
 606                 .mode_fifoctrl  = 0x2f2f2f2f,
 607                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 608                 .mode_backlight = 0x00000000,
 609                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 610                 .device_init            = board_au1200fb_panel_init,
 611                 .device_shutdown        = board_au1200fb_panel_shutdown,
 612                 320, 320,
 613                 240, 240,
 614         },
 615
 616         [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */
 617                 .name = "Toppoly_TD070WGCB2",
 618                 .monspecs = {
 619                         .modedb = NULL,
 620                         .modedb_len = 0,
 621                         .hfmin = 30000,
 622                         .hfmax = 70000,
 623                         .vfmin = 60,
 624                         .vfmax = 60,
 625                         .dclkmin = 6000000,
 626                         .dclkmax = 28000000,
 627                         .input = FB_DISP_RGB,
 628                 },
 629                 .mode_screen            = LCD_SCREEN_SX_N(856) |
 630                         LCD_SCREEN_SY_N(480),
 631                 .mode_horztiming        = LCD_HORZTIMING_HND2_N(43) |
 632                         LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114),
 633                 .mode_verttiming        = LCD_VERTTIMING_VND2_N(20) |
 634                         LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4),
 635                 .mode_clkcontrol        = 0x00020001, /* /4=24Mhz */
 636                 .mode_pwmdiv            = 0x8000063f,
 637                 .mode_pwmhi             = 0x03400000,
 638                 .mode_outmask   = 0x00fcfcfc,
 639                 .mode_fifoctrl  = 0x2f2f2f2f,
 640                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 641                 .mode_backlight = 0x00000000,
 642                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 643                 .device_init            = board_au1200fb_panel_init,
 644                 .device_shutdown        = board_au1200fb_panel_shutdown,
 645                 856, 856,
 646                 480, 480,
 647         },
 648 };
 649
 650 #define NUM_PANELS (ARRAY_SIZE(known_lcd_panels))
 651
 652 /********************************************************************/
 653
 654 #ifdef CONFIG_PM
 655 static int set_brightness(unsigned int brightness)
 656 {
 657         unsigned int hi1, divider;
 658
 659         /* limit brightness pwm duty to >= 30/1600 */
 660         if (brightness < 30) {
 661                 brightness = 30;
 662         }
 663         divider = (lcd->pwmdiv & 0x3FFFF) + 1;
 664         hi1 = (lcd->pwmhi >> 16) + 1;
 665         hi1 = (((brightness & 0xFF) + 1) * divider >> 8);
 666         lcd->pwmhi &= 0xFFFF;
 667         lcd->pwmhi |= (hi1 << 16);
 668
 669         return brightness;
 670 }
 671 #endif /* CONFIG_PM */
 672
 673 static int winbpp (unsigned int winctrl1)
 674 {
 675         int bits = 0;
 676
 677         /* how many bits are needed for each pixel format */
 678         switch (winctrl1 & LCD_WINCTRL1_FRM) {
 679         case LCD_WINCTRL1_FRM_1BPP:
 680                 bits = 1;
 681                 break;
 682         case LCD_WINCTRL1_FRM_2BPP:
 683                 bits = 2;
 684                 break;
 685         case LCD_WINCTRL1_FRM_4BPP:
 686                 bits = 4;
 687                 break;
 688         case LCD_WINCTRL1_FRM_8BPP:
 689                 bits = 8;
 690                 break;
 691         case LCD_WINCTRL1_FRM_12BPP:
 692         case LCD_WINCTRL1_FRM_16BPP655:
 693         case LCD_WINCTRL1_FRM_16BPP565:
 694         case LCD_WINCTRL1_FRM_16BPP556:
 695         case LCD_WINCTRL1_FRM_16BPPI1555:
 696         case LCD_WINCTRL1_FRM_16BPPI5551:
 697         case LCD_WINCTRL1_FRM_16BPPA1555:
 698         case LCD_WINCTRL1_FRM_16BPPA5551:
 699                 bits = 16;
 700                 break;
 701         case LCD_WINCTRL1_FRM_24BPP:
 702         case LCD_WINCTRL1_FRM_32BPP:
 703                 bits = 32;
 704                 break;
 705         }
 706
 707         return bits;
 708 }
 709
 710 static int fbinfo2index (struct fb_info *fb_info)
 711 {
 712         int i;
 713
 714         for (i = 0; i < CONFIG_FB_AU1200_DEVS; ++i) {
 715                 if (fb_info == (struct fb_info *)(&_au1200fb_devices[i].fb_info))
 716                         return i;
 717         }
 718         printk("au1200fb: ERROR: fbinfo2index failed!\n");
 719         return -1;
 720 }
 721
 722 static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
 723         int xpos, int ypos)
 724 {
 725         uint32 winctrl0, winctrl1, winenable, fb_offset = 0;
 726         int xsz, ysz;
 727
 728         /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */
 729
 730         winctrl0 = lcd->window[plane].winctrl0;
 731         winctrl1 = lcd->window[plane].winctrl1;
 732         winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN);
 733         winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY);
 734
 735         /* Check for off-screen adjustments */
 736         xsz = win->w[plane].xres;
 737         ysz = win->w[plane].yres;
 738         if ((xpos + win->w[plane].xres) > panel->Xres) {
 739                 /* Off-screen to the right */
 740                 xsz = panel->Xres - xpos; /* off by 1 ??? */
 741                 /*printk("off screen right\n");*/
 742         }
 743
 744         if ((ypos + win->w[plane].yres) > panel->Yres) {
 745                 /* Off-screen to the bottom */
 746                 ysz = panel->Yres - ypos; /* off by 1 ??? */
 747                 /*printk("off screen bottom\n");*/
 748         }
 749
 750         if (xpos < 0) {
 751                 /* Off-screen to the left */
 752                 xsz = win->w[plane].xres + xpos;
 753                 fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);
 754                 xpos = 0;
 755                 /*printk("off screen left\n");*/
 756         }
 757
 758         if (ypos < 0) {
 759                 /* Off-screen to the top */
 760                 ysz = win->w[plane].yres + ypos;
 761                 /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */
 762                 ypos = 0;
 763                 /*printk("off screen top\n");*/
 764         }
 765
 766         /* record settings */
 767         win->w[plane].xpos = xpos;
 768         win->w[plane].ypos = ypos;
 769
 770         xsz -= 1;
 771         ysz -= 1;
 772         winctrl0 |= (xpos << 21);
 773         winctrl0 |= (ypos << 10);
 774         winctrl1 |= (xsz << 11);
 775         winctrl1 |= (ysz << 0);
 776
 777         /* Disable the window while making changes, then restore WINEN */
 778         winenable = lcd->winenable & (1 << plane);
 779         au_sync();
 780         lcd->winenable &= ~(1 << plane);
 781         lcd->window[plane].winctrl0 = winctrl0;
 782         lcd->window[plane].winctrl1 = winctrl1;
 783         lcd->window[plane].winbuf0 =
 784         lcd->window[plane].winbuf1 = fbdev->fb_phys;
 785         lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
 786         lcd->winenable |= winenable;
 787         au_sync();
 788
 789         return 0;
 790 }
 791
 792 static void au1200_setpanel (struct panel_settings *newpanel)
 793 {
 794         /*
 795          * Perform global setup/init of LCD controller
 796          */
 797         uint32 winenable;
 798
 799         /* Make sure all windows disabled */
 800         winenable = lcd->winenable;
 801         lcd->winenable = 0;
 802         au_sync();
 803         /*
 804          * Ensure everything is disabled before reconfiguring
 805          */
 806         if (lcd->screen & LCD_SCREEN_SEN) {
 807                 /* Wait for vertical sync period */
 808                 lcd->intstatus = LCD_INT_SS;
 809                 while ((lcd->intstatus & LCD_INT_SS) == 0) {
 810                         au_sync();
 811                 }
 812
 813                 lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/
 814
 815                 do {
 816                         lcd->intstatus = lcd->intstatus; /*clear interrupts*/
 817                         au_sync();
 818                 /*wait for controller to shut down*/
 819                 } while ((lcd->intstatus & LCD_INT_SD) == 0);
 820
 821                 /* Call shutdown of current panel (if up) */
 822                 /* this must occur last, because if an external clock is driving
 823                     the controller, the clock cannot be turned off before first
 824                         shutting down the controller.
 825                  */
 826                 if (panel->device_shutdown != NULL)
 827                         panel->device_shutdown();
 828         }
 829
 830         /* Newpanel == NULL indicates a shutdown operation only */
 831         if (newpanel == NULL)
 832                 return;
 833
 834         panel = newpanel;
 835
 836         printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres);
 837
 838         /*
 839          * Setup clocking if internal LCD clock source (assumes sys_auxpll valid)
 840          */
 841         if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
 842         {
 843                 uint32 sys_clksrc;
 844                 au_writel(panel->mode_auxpll, SYS_AUXPLL);
 845                 sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f;
 846                 sys_clksrc |= panel->mode_toyclksrc;
 847                 au_writel(sys_clksrc, SYS_CLKSRC);
 848         }
 849
 850         /*
 851          * Configure panel timings
 852          */
 853         lcd->screen = panel->mode_screen;
 854         lcd->horztiming = panel->mode_horztiming;
 855         lcd->verttiming = panel->mode_verttiming;
 856         lcd->clkcontrol = panel->mode_clkcontrol;
 857         lcd->pwmdiv = panel->mode_pwmdiv;
 858         lcd->pwmhi = panel->mode_pwmhi;
 859         lcd->outmask = panel->mode_outmask;
 860         lcd->fifoctrl = panel->mode_fifoctrl;
 861         au_sync();
 862
 863         /* fixme: Check window settings to make sure still valid
 864          * for new geometry */
 865 #if 0
 866         au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos);
 867         au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos);
 868         au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos);
 869         au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos);
 870 #endif
 871         lcd->winenable = winenable;
 872
 873         /*
 874          * Re-enable screen now that it is configured
 875          */
 876         lcd->screen |= LCD_SCREEN_SEN;
 877         au_sync();
 878
 879         /* Call init of panel */
 880         if (panel->device_init != NULL) panel->device_init();
 881
 882         /* FIX!!!! not appropriate on panel change!!! Global setup/init */
 883         lcd->intenable = 0;
 884         lcd->intstatus = ~0;
 885         lcd->backcolor = win->mode_backcolor;
 886
 887         /* Setup Color Key - FIX!!! */
 888         lcd->colorkey = win->mode_colorkey;
 889         lcd->colorkeymsk = win->mode_colorkeymsk;
 890
 891         /* Setup HWCursor - FIX!!! Need to support this eventually */
 892         lcd->hwc.cursorctrl = 0;
 893         lcd->hwc.cursorpos = 0;
 894         lcd->hwc.cursorcolor0 = 0;
 895         lcd->hwc.cursorcolor1 = 0;
 896         lcd->hwc.cursorcolor2 = 0;
 897         lcd->hwc.cursorcolor3 = 0;
 898
 899
 900 #if 0
 901 #define D(X) printk("%25s: %08X\n", #X, X)
 902         D(lcd->screen);
 903         D(lcd->horztiming);
 904         D(lcd->verttiming);
 905         D(lcd->clkcontrol);
 906         D(lcd->pwmdiv);
 907         D(lcd->pwmhi);
 908         D(lcd->outmask);
 909         D(lcd->fifoctrl);
 910         D(lcd->window[0].winctrl0);
 911         D(lcd->window[0].winctrl1);
 912         D(lcd->window[0].winctrl2);
 913         D(lcd->window[0].winbuf0);
 914         D(lcd->window[0].winbuf1);
 915         D(lcd->window[0].winbufctrl);
 916         D(lcd->window[1].winctrl0);
 917         D(lcd->window[1].winctrl1);
 918         D(lcd->window[1].winctrl2);
 919         D(lcd->window[1].winbuf0);
 920         D(lcd->window[1].winbuf1);
 921         D(lcd->window[1].winbufctrl);
 922         D(lcd->window[2].winctrl0);
 923         D(lcd->window[2].winctrl1);
 924         D(lcd->window[2].winctrl2);
 925         D(lcd->window[2].winbuf0);
 926         D(lcd->window[2].winbuf1);
 927         D(lcd->window[2].winbufctrl);
 928         D(lcd->window[3].winctrl0);
 929         D(lcd->window[3].winctrl1);
 930         D(lcd->window[3].winctrl2);
 931         D(lcd->window[3].winbuf0);
 932         D(lcd->window[3].winbuf1);
 933         D(lcd->window[3].winbufctrl);
 934         D(lcd->winenable);
 935         D(lcd->intenable);
 936         D(lcd->intstatus);
 937         D(lcd->backcolor);
 938         D(lcd->winenable);
 939         D(lcd->colorkey);
 940     D(lcd->colorkeymsk);
 941         D(lcd->hwc.cursorctrl);
 942         D(lcd->hwc.cursorpos);
 943         D(lcd->hwc.cursorcolor0);
 944         D(lcd->hwc.cursorcolor1);
 945         D(lcd->hwc.cursorcolor2);
 946         D(lcd->hwc.cursorcolor3);
 947 #endif
 948 }
 949
 950 static void au1200_setmode(struct au1200fb_device *fbdev)
 951 {
 952         int plane = fbdev->plane;
 953         /* Window/plane setup */
 954         lcd->window[plane].winctrl1 = ( 0
 955                 | LCD_WINCTRL1_PRI_N(plane)
 956                 | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */
 957                 ) ;
 958
 959         au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos);
 960
 961         lcd->window[plane].winctrl2 = ( 0
 962                 | LCD_WINCTRL2_CKMODE_00
 963                 | LCD_WINCTRL2_DBM
 964                 | LCD_WINCTRL2_BX_N( fbdev->fb_info.fix.line_length)
 965                 | LCD_WINCTRL2_SCX_1
 966                 | LCD_WINCTRL2_SCY_1
 967                 ) ;
 968         lcd->winenable |= win->w[plane].mode_winenable;
 969         au_sync();
 970 }
 971
 972
 973 /* Inline helpers */
 974
 975 /*#define panel_is_dual(panel)  ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
 976 /*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
 977
 978 #define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN)
 979
 980 /* Bitfields format supported by the controller. */
 981 static struct fb_bitfield rgb_bitfields[][4] = {
 982         /*     Red,        Green,        Blue,       Transp   */
 983         [LCD_WINCTRL1_FRM_16BPP655 >> 25] =
 984                 { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
 985
 986         [LCD_WINCTRL1_FRM_16BPP565 >> 25] =
 987                 { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
 988
 989         [LCD_WINCTRL1_FRM_16BPP556 >> 25] =
 990                 { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } },
 991
 992         [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] =
 993                 { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
 994
 995         [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] =
 996                 { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } },
 997
 998         [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] =
 999                 { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } },
1000
1001         [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] =
1002                 { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } },
1003
1004         [LCD_WINCTRL1_FRM_24BPP >> 25] =
1005                 { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } },
1006
1007         [LCD_WINCTRL1_FRM_32BPP >> 25] =
1008                 { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } },
1009 };
1010
1011 /*-------------------------------------------------------------------------*/
1012
1013 /* Helpers */
1014
1015 static void au1200fb_update_fbinfo(struct fb_info *fbi)
1016 {
1017         /* FIX!!!! This also needs to take the window pixel format into account!!! */
1018
1019         /* Update var-dependent FB info */
1020         if (panel_is_color(panel)) {
1021                 if (fbi->var.bits_per_pixel <= 8) {
1022                         /* palettized */
1023                         fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1024                         fbi->fix.line_length = fbi->var.xres_virtual /
1025                                 (8/fbi->var.bits_per_pixel);
1026                 } else {
1027                         /* non-palettized */
1028                         fbi->fix.visual = FB_VISUAL_TRUECOLOR;
1029                         fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8);
1030                 }
1031         } else {
1032                 /* mono FIX!!! mono 8 and 4 bits */
1033                 fbi->fix.visual = FB_VISUAL_MONO10;
1034                 fbi->fix.line_length = fbi->var.xres_virtual / 8;
1035         }
1036
1037         fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual;
1038         print_dbg("line length: %d\n", fbi->fix.line_length);
1039         print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel);
1040 }
1041
1042 /*-------------------------------------------------------------------------*/
1043
1044 /* AU1200 framebuffer driver */
1045
1046 /* fb_check_var
1047  * Validate var settings with hardware restrictions and modify it if necessary
1048  */
1049 static int au1200fb_fb_check_var(struct fb_var_screeninfo *var,
1050         struct fb_info *fbi)
1051 {
1052         struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi;
1053         u32 pixclock;
1054         int screen_size, plane;
1055
1056         plane = fbdev->plane;
1057
1058         /* Make sure that the mode respect all LCD controller and
1059          * panel restrictions. */
1060         var->xres = win->w[plane].xres;
1061         var->yres = win->w[plane].yres;
1062
1063         /* No need for virtual resolution support */
1064         var->xres_virtual = var->xres;
1065         var->yres_virtual = var->yres;
1066
1067         var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1);
1068
1069         screen_size = var->xres_virtual * var->yres_virtual;
1070         if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8);
1071         else screen_size /= (8/var->bits_per_pixel);
1072
1073         if (fbdev->fb_len < screen_size)
1074                 return -EINVAL; /* Virtual screen is to big, abort */
1075
1076         /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */
1077         /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel
1078          * clock can only be obtain by dividing this value by an even integer.
1079          * Fallback to a slower pixel clock if necessary. */
1080         pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin);
1081         pixclock = min(pixclock, min(fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2));
1082
1083         if (AU1200_LCD_MAX_CLK % pixclock) {
1084                 int diff = AU1200_LCD_MAX_CLK % pixclock;
1085                 pixclock -= diff;
1086         }
1087
1088         var->pixclock = KHZ2PICOS(pixclock/1000);
1089 #if 0
1090         if (!panel_is_active(panel)) {
1091                 int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1;
1092
1093                 if (!panel_is_color(panel)
1094                         && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) {
1095                         /* STN 8bit mono panel support is up to 6MHz pixclock */
1096                         var->pixclock = KHZ2PICOS(6000);
1097                 } else if (!pcd) {
1098                         /* Other STN panel support is up to 12MHz  */
1099                         var->pixclock = KHZ2PICOS(12000);
1100                 }
1101         }
1102 #endif
1103         /* Set bitfield accordingly */
1104         switch (var->bits_per_pixel) {
1105                 case 16:
1106                 {
1107                         /* 16bpp True color.
1108                          * These must be set to MATCH WINCTRL[FORM] */
1109                         int idx;
1110                         idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1111                         var->red    = rgb_bitfields[idx][0];
1112                         var->green  = rgb_bitfields[idx][1];
1113                         var->blue   = rgb_bitfields[idx][2];
1114                         var->transp = rgb_bitfields[idx][3];
1115                         break;
1116                 }
1117
1118                 case 32:
1119                 {
1120                         /* 32bpp True color.
1121                          * These must be set to MATCH WINCTRL[FORM] */
1122                         int idx;
1123                         idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1124                         var->red    = rgb_bitfields[idx][0];
1125                         var->green  = rgb_bitfields[idx][1];
1126                         var->blue   = rgb_bitfields[idx][2];
1127                         var->transp = rgb_bitfields[idx][3];
1128                         break;
1129                 }
1130                 default:
1131                         print_dbg("Unsupported depth %dbpp", var->bits_per_pixel);
1132                         return -EINVAL;
1133         }
1134
1135         return 0;
1136 }
1137
1138 /* fb_set_par
1139  * Set hardware with var settings. This will enable the controller with a
1140  * specific mode, normally validated with the fb_check_var method
1141  */
1142 static int au1200fb_fb_set_par(struct fb_info *fbi)
1143 {
1144         struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi;
1145
1146         au1200fb_update_fbinfo(fbi);
1147         au1200_setmode(fbdev);
1148
1149         return 0;
1150 }
1151
1152 /* fb_setcolreg
1153  * Set color in LCD palette.
1154  */
1155 static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
1156         unsigned blue, unsigned transp, struct fb_info *fbi)
1157 {
1158         volatile u32 *palette = lcd->palette;
1159         u32 value;
1160
1161         if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1))
1162                 return -EINVAL;
1163
1164         if (fbi->var.grayscale) {
1165                 /* Convert color to grayscale */
1166                 red = green = blue =
1167                         (19595 * red + 38470 * green + 7471 * blue) >> 16;
1168         }
1169
1170         if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) {
1171                 /* Place color in the pseudopalette */
1172                 if (regno > 16)
1173                         return -EINVAL;
1174
1175                 palette = (u32*) fbi->pseudo_palette;
1176
1177                 red   >>= (16 - fbi->var.red.length);
1178                 green >>= (16 - fbi->var.green.length);
1179                 blue  >>= (16 - fbi->var.blue.length);
1180
1181                 value = (red   << fbi->var.red.offset)  |
1182                         (green << fbi->var.green.offset)|
1183                         (blue  << fbi->var.blue.offset);
1184                 value &= 0xFFFF;
1185
1186         } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) {
1187                 /* COLOR TFT PALLETTIZED (use RGB 565) */
1188                 value = (red & 0xF800)|((green >> 5) &
1189                                 0x07E0)|((blue >> 11) & 0x001F);
1190                 value &= 0xFFFF;
1191
1192         } else if (0 /*panel_is_color(fbdev->panel)*/) {
1193                 /* COLOR STN MODE */
1194                 value = 0x1234;
1195                 value &= 0xFFF;
1196         } else {
1197                 /* MONOCHROME MODE */
1198                 value = (green >> 12) & 0x000F;
1199                 value &= 0xF;
1200         }
1201
1202         palette[regno] = value;
1203
1204         return 0;
1205 }
1206
1207 /* fb_blank
1208  * Blank the screen. Depending on the mode, the screen will be
1209  * activated with the backlight color, or desactivated
1210  */
1211 static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi)
1212 {
1213         /* Short-circuit screen blanking */
1214         if (noblanking)
1215                 return 0;
1216
1217         switch (blank_mode) {
1218
1219         case FB_BLANK_UNBLANK:
1220         case FB_BLANK_NORMAL:
1221                 /* printk("turn on panel\n"); */
1222                 au1200_setpanel(panel);
1223                 break;
1224         case FB_BLANK_VSYNC_SUSPEND:
1225         case FB_BLANK_HSYNC_SUSPEND:
1226         case FB_BLANK_POWERDOWN:
1227                 /* printk("turn off panel\n"); */
1228                 au1200_setpanel(NULL);
1229                 break;
1230         default:
1231                 break;
1232
1233         }
1234
1235         /* FB_BLANK_NORMAL is a soft blank */
1236         return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0;
1237 }
1238
1239 /* fb_mmap
1240  * Map video memory in user space. We don't use the generic fb_mmap
1241  * method mainly to allow the use of the TLB streaming flag (CCA=6)
1242  */
1243 static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1244
1245 {
1246         unsigned int len;
1247         unsigned long start=0, off;
1248         struct au1200fb_device *fbdev = (struct au1200fb_device *) info;
1249
1250 #ifdef CONFIG_PM
1251         au1xxx_pm_access(LCD_pm_dev);
1252 #endif
1253
1254         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) {
1255                 return -EINVAL;
1256         }
1257
1258         start = fbdev->fb_phys & PAGE_MASK;
1259         len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len);
1260
1261         off = vma->vm_pgoff << PAGE_SHIFT;
1262
1263         if ((vma->vm_end - vma->vm_start + off) > len) {
1264                 return -EINVAL;
1265         }
1266
1267         off += start;
1268         vma->vm_pgoff = off >> PAGE_SHIFT;
1269
1270         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1271         pgprot_val(vma->vm_page_prot) |= _CACHE_MASK; /* CCA=7 */
1272
1273         vma->vm_flags |= VM_IO;
1274
1275         return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1276                                   vma->vm_end - vma->vm_start,
1277                                   vma->vm_page_prot);
1278
1279         return 0;
1280 }
1281
1282 static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
1283 {
1284
1285         unsigned int hi1, divider;
1286
1287         /* SCREEN_SIZE: user cannot reset size, must switch panel choice */
1288
1289         if (pdata->flags & SCREEN_BACKCOLOR)
1290                 lcd->backcolor = pdata->backcolor;
1291
1292         if (pdata->flags & SCREEN_BRIGHTNESS) {
1293
1294                 // limit brightness pwm duty to >= 30/1600
1295                 if (pdata->brightness < 30) {
1296                         pdata->brightness = 30;
1297                 }
1298                 divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1299                 hi1 = (lcd->pwmhi >> 16) + 1;
1300                 hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8);
1301                 lcd->pwmhi &= 0xFFFF;
1302                 lcd->pwmhi |= (hi1 << 16);
1303         }
1304
1305         if (pdata->flags & SCREEN_COLORKEY)
1306                 lcd->colorkey = pdata->colorkey;
1307
1308         if (pdata->flags & SCREEN_MASK)
1309                 lcd->colorkeymsk = pdata->mask;
1310         au_sync();
1311 }
1312
1313 static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
1314 {
1315         unsigned int hi1, divider;
1316
1317         pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1;
1318         pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1;
1319
1320         pdata->backcolor = lcd->backcolor;
1321         pdata->colorkey = lcd->colorkey;
1322         pdata->mask = lcd->colorkeymsk;
1323
1324         // brightness
1325         hi1 = (lcd->pwmhi >> 16) + 1;
1326         divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1327         pdata->brightness = ((hi1 << 8) / divider) - 1;
1328         au_sync();
1329 }
1330
1331 static void set_window(unsigned int plane,
1332         struct au1200_lcd_window_regs_t *pdata)
1333 {
1334         unsigned int val, bpp;
1335
1336         /* Window control register 0 */
1337         if (pdata->flags & WIN_POSITION) {
1338                 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX |
1339                                 LCD_WINCTRL0_OY);
1340                 val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX);
1341                 val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY);
1342                 lcd->window[plane].winctrl0 = val;
1343         }
1344         if (pdata->flags & WIN_ALPHA_COLOR) {
1345                 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A);
1346                 val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A);
1347                 lcd->window[plane].winctrl0 = val;
1348         }
1349         if (pdata->flags & WIN_ALPHA_MODE) {
1350                 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN);
1351                 val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN);
1352                 lcd->window[plane].winctrl0 = val;
1353         }
1354
1355         /* Window control register 1 */
1356         if (pdata->flags & WIN_PRIORITY) {
1357                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI);
1358                 val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI);
1359                 lcd->window[plane].winctrl1 = val;
1360         }
1361         if (pdata->flags & WIN_CHANNEL) {
1362                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE);
1363                 val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE);
1364                 lcd->window[plane].winctrl1 = val;
1365         }
1366         if (pdata->flags & WIN_BUFFER_FORMAT) {
1367                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM);
1368                 val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM);
1369                 lcd->window[plane].winctrl1 = val;
1370         }
1371         if (pdata->flags & WIN_COLOR_ORDER) {
1372                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO);
1373                 val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO);
1374                 lcd->window[plane].winctrl1 = val;
1375         }
1376         if (pdata->flags & WIN_PIXEL_ORDER) {
1377                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO);
1378                 val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO);
1379                 lcd->window[plane].winctrl1 = val;
1380         }
1381         if (pdata->flags & WIN_SIZE) {
1382                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX |
1383                                 LCD_WINCTRL1_SZY);
1384                 val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX);
1385                 val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY);
1386                 lcd->window[plane].winctrl1 = val;
1387                 /* program buffer line width */
1388                 bpp = winbpp(val) / 8;
1389                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX);
1390                 val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX);
1391                 lcd->window[plane].winctrl2 = val;
1392         }
1393
1394         /* Window control register 2 */
1395         if (pdata->flags & WIN_COLORKEY_MODE) {
1396                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE);
1397                 val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE);
1398                 lcd->window[plane].winctrl2 = val;
1399         }
1400         if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) {
1401                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM);
1402                 val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM);
1403                 lcd->window[plane].winctrl2 = val;
1404         }
1405         if (pdata->flags & WIN_RAM_ARRAY_MODE) {
1406                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM);
1407                 val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM);
1408                 lcd->window[plane].winctrl2 = val;
1409         }
1410
1411         /* Buffer line width programmed with WIN_SIZE */
1412
1413         if (pdata->flags & WIN_BUFFER_SCALE) {
1414                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX |
1415                                 LCD_WINCTRL2_SCY);
1416                 val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX);
1417                 val |= ((pdata->ysize) & LCD_WINCTRL2_SCY);
1418                 lcd->window[plane].winctrl2 = val;
1419         }
1420
1421         if (pdata->flags & WIN_ENABLE) {
1422                 val = lcd->winenable;
1423                 val &= ~(1<<plane);
1424                 val |= (pdata->enable & 1) << plane;
1425                 lcd->winenable = val;
1426         }
1427         au_sync();
1428 }
1429
1430 static void get_window(unsigned int plane,
1431         struct au1200_lcd_window_regs_t *pdata)
1432 {
1433         /* Window control register 0 */
1434         pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21;
1435         pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10;
1436         pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2;
1437         pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1;
1438
1439         /* Window control register 1 */
1440         pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30;
1441         pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29;
1442         pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1443         pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24;
1444         pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22;
1445         pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1;
1446         pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1;
1447
1448         /* Window control register 2 */
1449         pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24;
1450         pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23;
1451         pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;
1452
1453         pdata->enable = (lcd->winenable >> plane) & 1;
1454         au_sync();
1455 }
1456
1457 static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
1458                           unsigned long arg)
1459 {
1460         int plane;
1461         int val;
1462
1463 #ifdef CONFIG_PM
1464         au1xxx_pm_access(LCD_pm_dev);
1465 #endif
1466
1467         plane = fbinfo2index(info);
1468         print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane);
1469
1470         if (cmd == AU1200_LCD_FB_IOCTL) {
1471                 struct au1200_lcd_iodata_t iodata;
1472
1473                 if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata)))
1474                         return -EFAULT;
1475
1476                 print_dbg("FB IOCTL called\n");
1477
1478                 switch (iodata.subcmd) {
1479                 case AU1200_LCD_SET_SCREEN:
1480                         print_dbg("AU1200_LCD_SET_SCREEN\n");
1481                         set_global(cmd, &iodata.global);
1482                         break;
1483
1484                 case AU1200_LCD_GET_SCREEN:
1485                         print_dbg("AU1200_LCD_GET_SCREEN\n");
1486                         get_global(cmd, &iodata.global);
1487                         break;
1488
1489                 case AU1200_LCD_SET_WINDOW:
1490                         print_dbg("AU1200_LCD_SET_WINDOW\n");
1491                         set_window(plane, &iodata.window);
1492                         break;
1493
1494                 case AU1200_LCD_GET_WINDOW:
1495                         print_dbg("AU1200_LCD_GET_WINDOW\n");
1496                         get_window(plane, &iodata.window);
1497                         break;
1498
1499                 case AU1200_LCD_SET_PANEL:
1500                         print_dbg("AU1200_LCD_SET_PANEL\n");
1501                         if ((iodata.global.panel_choice >= 0) &&
1502                                         (iodata.global.panel_choice <
1503                                          NUM_PANELS))
1504                         {
1505                                 struct panel_settings *newpanel;
1506                                 panel_index = iodata.global.panel_choice;
1507                                 newpanel = &known_lcd_panels[panel_index];
1508                                 au1200_setpanel(newpanel);
1509                         }
1510                         break;
1511
1512                 case AU1200_LCD_GET_PANEL:
1513                         print_dbg("AU1200_LCD_GET_PANEL\n");
1514                         iodata.global.panel_choice = panel_index;
1515                         break;
1516
1517                 default:
1518                         return -EINVAL;
1519                 }
1520
1521                 val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata));
1522                 if (val) {
1523                         print_dbg("error: could not copy %d bytes\n", val);
1524                         return -EFAULT;
1525                 }
1526         }
1527
1528         return 0;
1529 }
1530
1531
1532 static struct fb_ops au1200fb_fb_ops = {
1533         .owner          = THIS_MODULE,
1534         .fb_check_var   = au1200fb_fb_check_var,
1535         .fb_set_par     = au1200fb_fb_set_par,
1536         .fb_setcolreg   = au1200fb_fb_setcolreg,
1537         .fb_blank       = au1200fb_fb_blank,
1538         .fb_fillrect    = cfb_fillrect,
1539         .fb_copyarea    = cfb_copyarea,
1540         .fb_imageblit   = cfb_imageblit,
1541         .fb_sync        = NULL,
1542         .fb_ioctl       = au1200fb_ioctl,
1543         .fb_mmap        = au1200fb_fb_mmap,
1544 };
1545
1546 /*-------------------------------------------------------------------------*/
1547
1548 static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id)
1549 {
1550         /* Nothing to do for now, just clear any pending interrupt */
1551         lcd->intstatus = lcd->intstatus;
1552         au_sync();
1553
1554         return IRQ_HANDLED;
1555 }
1556
1557 /*-------------------------------------------------------------------------*/
1558
1559 /* AU1200 LCD device probe helpers */
1560
1561 static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
1562 {
1563         struct fb_info *fbi = &fbdev->fb_info;
1564         int bpp;
1565
1566         memset(fbi, 0, sizeof(struct fb_info));
1567         fbi->fbops = &au1200fb_fb_ops;
1568
1569         bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);
1570
1571         /* Copy monitor specs from panel data */
1572         /* fixme: we're setting up LCD controller windows, so these dont give a
1573         damn as to what the monitor specs are (the panel itself does, but that
1574         isnt done here...so maybe need a generic catchall monitor setting??? */
1575         memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs));
1576
1577         /* We first try the user mode passed in argument. If that failed,
1578          * or if no one has been specified, we default to the first mode of the
1579          * panel list. Note that after this call, var data will be set */
1580         if (!fb_find_mode(&fbi->var,
1581                           fbi,
1582                           NULL, /* drv_info.opt_mode, */
1583                           fbi->monspecs.modedb,
1584                           fbi->monspecs.modedb_len,
1585                           fbi->monspecs.modedb,
1586                           bpp)) {
1587
1588                 print_err("Cannot find valid mode for panel %s", panel->name);
1589                 return -EFAULT;
1590         }
1591
1592         fbi->pseudo_palette = kcalloc(16, sizeof(u32), GFP_KERNEL);
1593         if (!fbi->pseudo_palette) {
1594                 return -ENOMEM;
1595         }
1596
1597         if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
1598                 print_err("Fail to allocate colormap (%d entries)",
1599                            AU1200_LCD_NBR_PALETTE_ENTRIES);
1600                 kfree(fbi->pseudo_palette);
1601                 return -EFAULT;
1602         }
1603
1604         strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id));
1605         fbi->fix.smem_start = fbdev->fb_phys;
1606         fbi->fix.smem_len = fbdev->fb_len;
1607         fbi->fix.type = FB_TYPE_PACKED_PIXELS;
1608         fbi->fix.xpanstep = 0;
1609         fbi->fix.ypanstep = 0;
1610         fbi->fix.mmio_start = 0;
1611         fbi->fix.mmio_len = 0;
1612         fbi->fix.accel = FB_ACCEL_NONE;
1613
1614         fbi->screen_base = (char __iomem *) fbdev->fb_mem;
1615
1616         au1200fb_update_fbinfo(fbi);
1617
1618         return 0;
1619 }
1620
1621 /*-------------------------------------------------------------------------*/
1622
1623 /* AU1200 LCD controller device driver */
1624
1625 static int au1200fb_drv_probe(struct device *dev)
1626 {
1627         struct au1200fb_device *fbdev;
1628         unsigned long page;
1629         int bpp, plane, ret;
1630
1631         if (!dev)
1632                 return -EINVAL;
1633
1634         for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) {
1635                 bpp = winbpp(win->w[plane].mode_winctrl1);
1636                 if (win->w[plane].xres == 0)
1637                         win->w[plane].xres = panel->Xres;
1638                 if (win->w[plane].yres == 0)
1639                         win->w[plane].yres = panel->Yres;
1640
1641                 fbdev = &_au1200fb_devices[plane];
1642                 memset(fbdev, 0, sizeof(struct au1200fb_device));
1643                 fbdev->plane = plane;
1644
1645                 /* Allocate the framebuffer to the maximum screen size */
1646                 fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8;
1647
1648                 fbdev->fb_mem = dma_alloc_noncoherent(dev,
1649                                 PAGE_ALIGN(fbdev->fb_len),
1650                                 &fbdev->fb_phys, GFP_KERNEL);
1651                 if (!fbdev->fb_mem) {
1652                         print_err("fail to allocate frambuffer (size: %dK))",
1653                                   fbdev->fb_len / 1024);
1654                         return -ENOMEM;
1655                 }
1656
1657                 /*
1658                  * Set page reserved so that mmap will work. This is necessary
1659                  * since we'll be remapping normal memory.
1660                  */
1661                 for (page = (unsigned long)fbdev->fb_phys;
1662                      page < PAGE_ALIGN((unsigned long)fbdev->fb_phys +
1663                              fbdev->fb_len);
1664                      page += PAGE_SIZE) {
1665                         SetPageReserved(pfn_to_page(page >> PAGE_SHIFT)); /* LCD DMA is NOT coherent on Au1200 */
1666                 }
1667                 print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
1668                 print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
1669
1670                 /* Init FB data */
1671                 if ((ret = au1200fb_init_fbinfo(fbdev)) < 0)
1672                         goto failed;
1673
1674                 /* Register new framebuffer */
1675                 if ((ret = register_framebuffer(&fbdev->fb_info)) < 0) {
1676                         print_err("cannot register new framebuffer");
1677                         goto failed;
1678                 }
1679
1680                 au1200fb_fb_set_par(&fbdev->fb_info);
1681
1682 #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
1683                 if (plane == 0)
1684                         if (fb_prepare_logo(&fbdev->fb_info, FB_ROTATE_UR)) {
1685                                 /* Start display and show logo on boot */
1686                                 fb_set_cmap(&fbdev->fb_info.cmap,
1687                                                 &fbdev->fb_info);
1688
1689                                 fb_show_logo(&fbdev->fb_info, FB_ROTATE_UR);
1690                         }
1691 #endif
1692         }
1693
1694         /* Now hook interrupt too */
1695         if ((ret = request_irq(AU1200_LCD_INT, au1200fb_handle_irq,
1696                           IRQF_DISABLED | IRQF_SHARED, "lcd", (void *)dev)) < 0) {
1697                 print_err("fail to request interrupt line %d (err: %d)",
1698                           AU1200_LCD_INT, ret);
1699                 goto failed;
1700         }
1701
1702         return 0;
1703
1704 failed:
1705         /* NOTE: This only does the current plane/window that failed; others are still active */
1706         if (fbdev->fb_mem)
1707                 dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len),
1708                                 fbdev->fb_mem, fbdev->fb_phys);
1709         if (fbdev->fb_info.cmap.len != 0)
1710                 fb_dealloc_cmap(&fbdev->fb_info.cmap);
1711         if (fbdev->fb_info.pseudo_palette)
1712                 kfree(fbdev->fb_info.pseudo_palette);
1713         if (plane == 0)
1714                 free_irq(AU1200_LCD_INT, (void*)dev);
1715         return ret;
1716 }
1717
1718 static int au1200fb_drv_remove(struct device *dev)
1719 {
1720         struct au1200fb_device *fbdev;
1721         int plane;
1722
1723         if (!dev)
1724                 return -ENODEV;
1725
1726         /* Turn off the panel */
1727         au1200_setpanel(NULL);
1728
1729         for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane)
1730         {
1731                 fbdev = &_au1200fb_devices[plane];
1732
1733                 /* Clean up all probe data */
1734                 unregister_framebuffer(&fbdev->fb_info);
1735                 if (fbdev->fb_mem)
1736                         dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len),
1737                                         fbdev->fb_mem, fbdev->fb_phys);
1738                 if (fbdev->fb_info.cmap.len != 0)
1739                         fb_dealloc_cmap(&fbdev->fb_info.cmap);
1740                 if (fbdev->fb_info.pseudo_palette)
1741                         kfree(fbdev->fb_info.pseudo_palette);
1742         }
1743
1744         free_irq(AU1200_LCD_INT, (void *)dev);
1745
1746         return 0;
1747 }
1748
1749 #ifdef CONFIG_PM
1750 static int au1200fb_drv_suspend(struct device *dev, u32 state, u32 level)
1751 {
1752         /* TODO */
1753         return 0;
1754 }
1755
1756 static int au1200fb_drv_resume(struct device *dev, u32 level)
1757 {
1758         /* TODO */
1759         return 0;
1760 }
1761 #endif /* CONFIG_PM */
1762
1763 static struct device_driver au1200fb_driver = {
1764         .name           = "au1200-lcd",
1765         .bus            = &platform_bus_type,
1766         .probe          = au1200fb_drv_probe,
1767         .remove         = au1200fb_drv_remove,
1768 #ifdef CONFIG_PM
1769         .suspend        = au1200fb_drv_suspend,
1770         .resume         = au1200fb_drv_resume,
1771 #endif
1772 };
1773
1774 /*-------------------------------------------------------------------------*/
1775
1776 /* Kernel driver */
1777
1778 static void au1200fb_setup(void)
1779 {
1780         char* options = NULL;
1781         char* this_opt;
1782         int num_panels = ARRAY_SIZE(known_lcd_panels);
1783         int panel_idx = -1;
1784
1785         fb_get_options(DRIVER_NAME, &options);
1786
1787         if (options) {
1788                 while ((this_opt = strsep(&options,",")) != NULL) {
1789                         /* Panel option - can be panel name,
1790                          * "bs" for board-switch, or number/index */
1791                         if (!strncmp(this_opt, "panel:", 6)) {
1792                                 int i;
1793                                 long int li;
1794                                 char *endptr;
1795                                 this_opt += 6;
1796                                 /* First check for index, which allows
1797                                  * to short circuit this mess */
1798                                 li = simple_strtol(this_opt, &endptr, 0);
1799                                 if (*endptr == '\0') {
1800                                         panel_idx = (int)li;
1801                                 }
1802                                 else if (strcmp(this_opt, "bs") == 0) {
1803                                         extern int board_au1200fb_panel(void);
1804                                         panel_idx = board_au1200fb_panel();
1805                                 }
1806
1807                                 else
1808                                 for (i = 0; i < num_panels; i++) {
1809                                         if (!strcmp(this_opt, known_lcd_panels[i].name)) {
1810                                                 panel_idx = i;
1811                                                 break;
1812                                         }
1813                                 }
1814
1815                                 if ((panel_idx < 0) || (panel_idx >= num_panels)) {
1816                                                 print_warn("Panel %s not supported!", this_opt);
1817                                 }
1818                                 else
1819                                         panel_index = panel_idx;
1820                         }
1821
1822                         else if (strncmp(this_opt, "nohwcursor", 10) == 0) {
1823                                 nohwcursor = 1;
1824                         }
1825
1826                         /* Unsupported option */
1827                         else {
1828                                 print_warn("Unsupported option \"%s\"", this_opt);
1829                         }
1830                 }
1831         }
1832 }
1833
1834 #ifdef CONFIG_PM
1835 static int au1200fb_pm_callback(au1xxx_power_dev_t *dev,
1836                 au1xxx_request_t request, void *data) {
1837         int retval = -1;
1838         unsigned int d = 0;
1839         unsigned int brightness = 0;
1840
1841         if (request == AU1XXX_PM_SLEEP) {
1842                 board_au1200fb_panel_shutdown();
1843         }
1844         else if (request == AU1XXX_PM_WAKEUP) {
1845                 if(dev->prev_state == SLEEP_STATE)
1846                 {
1847                         int plane;
1848                         au1200_setpanel(panel);
1849                         for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane)         {
1850                                 struct au1200fb_device *fbdev;
1851                                 fbdev = &_au1200fb_devices[plane];
1852                                 au1200fb_fb_set_par(&fbdev->fb_info);
1853                         }
1854                 }
1855
1856                 d = *((unsigned int*)data);
1857                 if(d <=10) brightness = 26;
1858                 else if(d<=20) brightness = 51;
1859                 else if(d<=30) brightness = 77;
1860                 else if(d<=40) brightness = 102;
1861                 else if(d<=50) brightness = 128;
1862                 else if(d<=60) brightness = 153;
1863                 else if(d<=70) brightness = 179;
1864                 else if(d<=80) brightness = 204;
1865                 else if(d<=90) brightness = 230;
1866                 else brightness = 255;
1867                 set_brightness(brightness);
1868         } else if (request == AU1XXX_PM_GETSTATUS) {
1869                 return dev->cur_state;
1870         } else if (request == AU1XXX_PM_ACCESS) {
1871                 if (dev->cur_state != SLEEP_STATE)
1872                         return retval;
1873                 else {
1874                         au1200_setpanel(panel);
1875                 }
1876         } else if (request == AU1XXX_PM_IDLE) {
1877         } else if (request == AU1XXX_PM_CLEANUP) {
1878         }
1879
1880         return retval;
1881 }
1882 #endif
1883
1884 static int __init au1200fb_init(void)
1885 {
1886         print_info("" DRIVER_DESC "");
1887
1888         /* Setup driver with options */
1889         au1200fb_setup();
1890
1891         /* Point to the panel selected */
1892         panel = &known_lcd_panels[panel_index];
1893         win = &windows[window_index];
1894
1895         printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name);
1896         printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name);
1897
1898         /* Kickstart the panel, the framebuffers/windows come soon enough */
1899         au1200_setpanel(panel);
1900
1901         #ifdef CONFIG_PM
1902         LCD_pm_dev = new_au1xxx_power_device("LCD", &au1200fb_pm_callback, NULL);
1903         if ( LCD_pm_dev == NULL)
1904                 printk(KERN_INFO "Unable to create a power management device entry for the au1200fb.\n");
1905         else
1906                 printk(KERN_INFO "Power management device entry for the au1200fb loaded.\n");
1907         #endif
1908
1909         return driver_register(&au1200fb_driver);
1910 }
1911
1912 static void __exit au1200fb_cleanup(void)
1913 {
1914         driver_unregister(&au1200fb_driver);
1915 }
1916
1917 module_init(au1200fb_init);
1918 module_exit(au1200fb_cleanup);
1919
1920 MODULE_DESCRIPTION(DRIVER_DESC);
1921 MODULE_LICENSE("GPL");