linux/drivers/video/au1200fb.c
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   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 "au1200fb.h"
  48
  49#ifdef CONFIG_PM
  50#include <asm/mach-au1x00/au1xxx_pm.h>
  51#endif
  52
  53#ifndef CONFIG_FB_AU1200_DEVS
  54#define CONFIG_FB_AU1200_DEVS 4
  55#endif
  56
  57#define DRIVER_NAME "au1200fb"
  58#define DRIVER_DESC "LCD controller driver for AU1200 processors"
  59
  60#define DEBUG 1
  61
  62#define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg)
  63#define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg)
  64#define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg)
  65
  66#if DEBUG
  67#define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg)
  68#else
  69#define print_dbg(f, arg...) do {} while (0)
  70#endif
  71
  72
  73#define AU1200_LCD_FB_IOCTL 0x46FF
  74
  75#define AU1200_LCD_SET_SCREEN 1
  76#define AU1200_LCD_GET_SCREEN 2
  77#define AU1200_LCD_SET_WINDOW 3
  78#define AU1200_LCD_GET_WINDOW 4
  79#define AU1200_LCD_SET_PANEL  5
  80#define AU1200_LCD_GET_PANEL  6
  81
  82#define SCREEN_SIZE                 (1<< 1)
  83#define SCREEN_BACKCOLOR    (1<< 2)
  84#define SCREEN_BRIGHTNESS   (1<< 3)
  85#define SCREEN_COLORKEY     (1<< 4)
  86#define SCREEN_MASK         (1<< 5)
  87
  88struct au1200_lcd_global_regs_t {
  89        unsigned int flags;
  90        unsigned int xsize;
  91        unsigned int ysize;
  92        unsigned int backcolor;
  93        unsigned int brightness;
  94        unsigned int colorkey;
  95        unsigned int mask;
  96        unsigned int panel_choice;
  97        char panel_desc[80];
  98
  99};
 100
 101#define WIN_POSITION            (1<< 0)
 102#define WIN_ALPHA_COLOR         (1<< 1)
 103#define WIN_ALPHA_MODE          (1<< 2)
 104#define WIN_PRIORITY            (1<< 3)
 105#define WIN_CHANNEL             (1<< 4)
 106#define WIN_BUFFER_FORMAT       (1<< 5)
 107#define WIN_COLOR_ORDER         (1<< 6)
 108#define WIN_PIXEL_ORDER         (1<< 7)
 109#define WIN_SIZE                (1<< 8)
 110#define WIN_COLORKEY_MODE       (1<< 9)
 111#define WIN_DOUBLE_BUFFER_MODE  (1<< 10)
 112#define WIN_RAM_ARRAY_MODE      (1<< 11)
 113#define WIN_BUFFER_SCALE        (1<< 12)
 114#define WIN_ENABLE                  (1<< 13)
 115
 116struct au1200_lcd_window_regs_t {
 117        unsigned int flags;
 118        unsigned int xpos;
 119        unsigned int ypos;
 120        unsigned int alpha_color;
 121        unsigned int alpha_mode;
 122        unsigned int priority;
 123        unsigned int channel;
 124        unsigned int buffer_format;
 125        unsigned int color_order;
 126        unsigned int pixel_order;
 127        unsigned int xsize;
 128        unsigned int ysize;
 129        unsigned int colorkey_mode;
 130        unsigned int double_buffer_mode;
 131        unsigned int ram_array_mode;
 132        unsigned int xscale;
 133        unsigned int yscale;
 134        unsigned int enable;
 135};
 136
 137
 138struct au1200_lcd_iodata_t {
 139        unsigned int subcmd;
 140        struct au1200_lcd_global_regs_t global;
 141        struct au1200_lcd_window_regs_t window;
 142};
 143
 144#if defined(__BIG_ENDIAN)
 145#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11
 146#else
 147#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00
 148#endif
 149#define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565
 150
 151/* Private, per-framebuffer management information (independent of the panel itself) */
 152struct au1200fb_device {
 153        struct fb_info fb_info;                 /* FB driver info record */
 154
 155        int                                     plane;
 156        unsigned char*          fb_mem;         /* FrameBuffer memory map */
 157        unsigned int            fb_len;
 158        dma_addr_t              fb_phys;
 159};
 160
 161static struct au1200fb_device _au1200fb_devices[CONFIG_FB_AU1200_DEVS];
 162/********************************************************************/
 163
 164/* LCD controller restrictions */
 165#define AU1200_LCD_MAX_XRES     1280
 166#define AU1200_LCD_MAX_YRES     1024
 167#define AU1200_LCD_MAX_BPP      32
 168#define AU1200_LCD_MAX_CLK      96000000 /* fixme: this needs to go away ? */
 169#define AU1200_LCD_NBR_PALETTE_ENTRIES 256
 170
 171/* Default number of visible screen buffer to allocate */
 172#define AU1200FB_NBR_VIDEO_BUFFERS 1
 173
 174/********************************************************************/
 175
 176static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR;
 177static int window_index = 2; /* default is zero */
 178static int panel_index = 2; /* default is zero */
 179static struct window_settings *win;
 180static struct panel_settings *panel;
 181static int noblanking = 1;
 182static int nohwcursor = 0;
 183
 184struct window_settings {
 185        unsigned char name[64];
 186        uint32 mode_backcolor;
 187        uint32 mode_colorkey;
 188        uint32 mode_colorkeymsk;
 189        struct {
 190                int xres;
 191                int yres;
 192                int xpos;
 193                int ypos;
 194                uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */
 195                uint32 mode_winenable;
 196        } w[4];
 197};
 198
 199#if defined(__BIG_ENDIAN)
 200#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00
 201#else
 202#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01
 203#endif
 204
 205extern int board_au1200fb_panel_init (void);
 206extern int board_au1200fb_panel_shutdown (void);
 207
 208#ifdef CONFIG_PM
 209int au1200fb_pm_callback(au1xxx_power_dev_t *dev,
 210                au1xxx_request_t request, void *data);
 211au1xxx_power_dev_t *LCD_pm_dev;
 212#endif
 213
 214/*
 215 * Default window configurations
 216 */
 217static struct window_settings windows[] = {
 218        { /* Index 0 */
 219                "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
 220                /* mode_backcolor       */ 0x006600ff,
 221                /* mode_colorkey,msk*/ 0, 0,
 222                {
 223                        {
 224                        /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 225                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 226                                LCD_WINCTRL1_PO_16BPP,
 227                        /* mode_winenable*/ LCD_WINENABLE_WEN0,
 228                        },
 229                        {
 230                        /* xres, yres, xpos, ypos */ 100, 100, 100, 100,
 231                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 232                                LCD_WINCTRL1_PO_16BPP |
 233                                LCD_WINCTRL1_PIPE,
 234                        /* mode_winenable*/ LCD_WINENABLE_WEN1,
 235                        },
 236                        {
 237                        /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 238                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 239                                LCD_WINCTRL1_PO_16BPP,
 240                        /* mode_winenable*/ 0,
 241                        },
 242                        {
 243                        /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 244                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 245                                LCD_WINCTRL1_PO_16BPP |
 246                                LCD_WINCTRL1_PIPE,
 247                        /* mode_winenable*/ 0,
 248                        },
 249                },
 250        },
 251
 252        { /* Index 1 */
 253                "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
 254                /* mode_backcolor       */ 0x006600ff,
 255                /* mode_colorkey,msk*/ 0, 0,
 256                {
 257                        {
 258                        /* xres, yres, xpos, ypos */ 320, 240, 5, 5,
 259                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP |
 260                                LCD_WINCTRL1_PO_00,
 261                        /* mode_winenable*/ LCD_WINENABLE_WEN0,
 262                        },
 263                        {
 264                        /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 265                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565
 266                                | LCD_WINCTRL1_PO_16BPP,
 267                        /* mode_winenable*/ 0,
 268                        },
 269                        {
 270                        /* xres, yres, xpos, ypos */ 100, 100, 0, 0,
 271                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 272                                LCD_WINCTRL1_PO_16BPP |
 273                                LCD_WINCTRL1_PIPE,
 274                        /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
 275                        },
 276                        {
 277                        /* xres, yres, xpos, ypos */ 200, 25, 0, 0,
 278                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 279                                LCD_WINCTRL1_PO_16BPP |
 280                                LCD_WINCTRL1_PIPE,
 281                        /* mode_winenable*/ 0,
 282                        },
 283                },
 284        },
 285        { /* Index 2 */
 286                "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
 287                /* mode_backcolor       */ 0x006600ff,
 288                /* mode_colorkey,msk*/ 0, 0,
 289                {
 290                        {
 291                        /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 292                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 293                                LCD_WINCTRL1_PO_16BPP,
 294                        /* mode_winenable*/ LCD_WINENABLE_WEN0,
 295                        },
 296                        {
 297                        /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 298                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 299                                LCD_WINCTRL1_PO_16BPP,
 300                        /* mode_winenable*/ 0,
 301                        },
 302                        {
 303                        /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 304                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP |
 305                                LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE,
 306                        /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
 307                        },
 308                        {
 309                        /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 310                        /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 311                                LCD_WINCTRL1_PO_16BPP |
 312                                LCD_WINCTRL1_PIPE,
 313                        /* mode_winenable*/ 0,
 314                        },
 315                },
 316        },
 317        /* Need VGA 640 @ 24bpp, @ 32bpp */
 318        /* Need VGA 800 @ 24bpp, @ 32bpp */
 319        /* Need VGA 1024 @ 24bpp, @ 32bpp */
 320};
 321
 322/*
 323 * Controller configurations for various panels.
 324 */
 325
 326struct panel_settings
 327{
 328        const char name[25];            /* Full name <vendor>_<model> */
 329
 330        struct  fb_monspecs monspecs;   /* FB monitor specs */
 331
 332        /* panel timings */
 333        uint32 mode_screen;
 334        uint32 mode_horztiming;
 335        uint32 mode_verttiming;
 336        uint32 mode_clkcontrol;
 337        uint32 mode_pwmdiv;
 338        uint32 mode_pwmhi;
 339        uint32 mode_outmask;
 340        uint32 mode_fifoctrl;
 341        uint32 mode_toyclksrc;
 342        uint32 mode_backlight;
 343        uint32 mode_auxpll;
 344        int (*device_init)(void);
 345        int (*device_shutdown)(void);
 346#define Xres min_xres
 347#define Yres min_yres
 348        u32     min_xres;               /* Minimum horizontal resolution */
 349        u32     max_xres;               /* Maximum horizontal resolution */
 350        u32     min_yres;               /* Minimum vertical resolution */
 351        u32     max_yres;               /* Maximum vertical resolution */
 352};
 353
 354/********************************************************************/
 355/* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */
 356
 357/* List of panels known to work with the AU1200 LCD controller.
 358 * To add a new panel, enter the same specifications as the
 359 * Generic_TFT one, and MAKE SURE that it doesn't conflicts
 360 * with the controller restrictions. Restrictions are:
 361 *
 362 * STN color panels: max_bpp <= 12
 363 * STN mono panels: max_bpp <= 4
 364 * TFT panels: max_bpp <= 16
 365 * max_xres <= 800
 366 * max_yres <= 600
 367 */
 368static struct panel_settings known_lcd_panels[] =
 369{
 370        [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */
 371                .name = "QVGA_320x240",
 372                .monspecs = {
 373                        .modedb = NULL,
 374                        .modedb_len = 0,
 375                        .hfmin = 30000,
 376                        .hfmax = 70000,
 377                        .vfmin = 60,
 378                        .vfmax = 60,
 379                        .dclkmin = 6000000,
 380                        .dclkmax = 28000000,
 381                        .input = FB_DISP_RGB,
 382                },
 383                .mode_screen            = LCD_SCREEN_SX_N(320) |
 384                        LCD_SCREEN_SY_N(240),
 385                .mode_horztiming        = 0x00c4623b,
 386                .mode_verttiming        = 0x00502814,
 387                .mode_clkcontrol        = 0x00020002, /* /4=24Mhz */
 388                .mode_pwmdiv            = 0x00000000,
 389                .mode_pwmhi             = 0x00000000,
 390                .mode_outmask   = 0x00FFFFFF,
 391                .mode_fifoctrl  = 0x2f2f2f2f,
 392                .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 393                .mode_backlight = 0x00000000,
 394                .mode_auxpll            = 8, /* 96MHz AUXPLL */
 395                .device_init            = NULL,
 396                .device_shutdown        = NULL,
 397                320, 320,
 398                240, 240,
 399        },
 400
 401        [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */
 402                .name = "VGA_640x480",
 403                .monspecs = {
 404                        .modedb = NULL,
 405                        .modedb_len = 0,
 406                        .hfmin = 30000,
 407                        .hfmax = 70000,
 408                        .vfmin = 60,
 409                        .vfmax = 60,
 410                        .dclkmin = 6000000,
 411                        .dclkmax = 28000000,
 412                        .input = FB_DISP_RGB,
 413                },
 414                .mode_screen            = 0x13f9df80,
 415                .mode_horztiming        = 0x003c5859,
 416                .mode_verttiming        = 0x00741201,
 417                .mode_clkcontrol        = 0x00020001, /* /4=24Mhz */
 418                .mode_pwmdiv            = 0x00000000,
 419                .mode_pwmhi             = 0x00000000,
 420                .mode_outmask   = 0x00FFFFFF,
 421                .mode_fifoctrl  = 0x2f2f2f2f,
 422                .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 423                .mode_backlight = 0x00000000,
 424                .mode_auxpll            = 8, /* 96MHz AUXPLL */
 425                .device_init            = NULL,
 426                .device_shutdown        = NULL,
 427                640, 480,
 428                640, 480,
 429        },
 430
 431        [2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */
 432                .name = "SVGA_800x600",
 433                .monspecs = {
 434                        .modedb = NULL,
 435                        .modedb_len = 0,
 436                        .hfmin = 30000,
 437                        .hfmax = 70000,
 438                        .vfmin = 60,
 439                        .vfmax = 60,
 440                        .dclkmin = 6000000,
 441                        .dclkmax = 28000000,
 442                        .input = FB_DISP_RGB,
 443                },
 444                .mode_screen            = 0x18fa5780,
 445                .mode_horztiming        = 0x00dc7e77,
 446                .mode_verttiming        = 0x00584805,
 447                .mode_clkcontrol        = 0x00020000, /* /2=48Mhz */
 448                .mode_pwmdiv            = 0x00000000,
 449                .mode_pwmhi             = 0x00000000,
 450                .mode_outmask   = 0x00FFFFFF,
 451                .mode_fifoctrl  = 0x2f2f2f2f,
 452                .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 453                .mode_backlight = 0x00000000,
 454                .mode_auxpll            = 8, /* 96MHz AUXPLL */
 455                .device_init            = NULL,
 456                .device_shutdown        = NULL,
 457                800, 800,
 458                600, 600,
 459        },
 460
 461        [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */
 462                .name = "XVGA_1024x768",
 463                .monspecs = {
 464                        .modedb = NULL,
 465                        .modedb_len = 0,
 466                        .hfmin = 30000,
 467                        .hfmax = 70000,
 468                        .vfmin = 60,
 469                        .vfmax = 60,
 470                        .dclkmin = 6000000,
 471                        .dclkmax = 28000000,
 472                        .input = FB_DISP_RGB,
 473                },
 474                .mode_screen            = 0x1ffaff80,
 475                .mode_horztiming        = 0x007d0e57,
 476                .mode_verttiming        = 0x00740a01,
 477                .mode_clkcontrol        = 0x000A0000, /* /1 */
 478                .mode_pwmdiv            = 0x00000000,
 479                .mode_pwmhi             = 0x00000000,
 480                .mode_outmask   = 0x00FFFFFF,
 481                .mode_fifoctrl  = 0x2f2f2f2f,
 482                .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 483                .mode_backlight = 0x00000000,
 484                .mode_auxpll            = 6, /* 72MHz AUXPLL */
 485                .device_init            = NULL,
 486                .device_shutdown        = NULL,
 487                1024, 1024,
 488                768, 768,
 489        },
 490
 491        [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */
 492                .name = "XVGA_1280x1024",
 493                .monspecs = {
 494                        .modedb = NULL,
 495                        .modedb_len = 0,
 496                        .hfmin = 30000,
 497                        .hfmax = 70000,
 498                        .vfmin = 60,
 499                        .vfmax = 60,
 500                        .dclkmin = 6000000,
 501                        .dclkmax = 28000000,
 502                        .input = FB_DISP_RGB,
 503                },
 504                .mode_screen            = 0x27fbff80,
 505                .mode_horztiming        = 0x00cdb2c7,
 506                .mode_verttiming        = 0x00600002,
 507                .mode_clkcontrol        = 0x000A0000, /* /1 */
 508                .mode_pwmdiv            = 0x00000000,
 509                .mode_pwmhi             = 0x00000000,
 510                .mode_outmask   = 0x00FFFFFF,
 511                .mode_fifoctrl  = 0x2f2f2f2f,
 512                .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 513                .mode_backlight = 0x00000000,
 514                .mode_auxpll            = 10, /* 120MHz AUXPLL */
 515                .device_init            = NULL,
 516                .device_shutdown        = NULL,
 517                1280, 1280,
 518                1024, 1024,
 519        },
 520
 521        [5] = { /* Samsung 1024x768 TFT */
 522                .name = "Samsung_1024x768_TFT",
 523                .monspecs = {
 524                        .modedb = NULL,
 525                        .modedb_len = 0,
 526                        .hfmin = 30000,
 527                        .hfmax = 70000,
 528                        .vfmin = 60,
 529                        .vfmax = 60,
 530                        .dclkmin = 6000000,
 531                        .dclkmax = 28000000,
 532                        .input = FB_DISP_RGB,
 533                },
 534                .mode_screen            = 0x1ffaff80,
 535                .mode_horztiming        = 0x018cc677,
 536                .mode_verttiming        = 0x00241217,
 537                .mode_clkcontrol        = 0x00000000, /* SCB 0x1 /4=24Mhz */
 538                .mode_pwmdiv            = 0x8000063f, /* SCB 0x0 */
 539                .mode_pwmhi             = 0x03400000, /* SCB 0x0 */
 540                .mode_outmask   = 0x00FFFFFF,
 541                .mode_fifoctrl  = 0x2f2f2f2f,
 542                .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 543                .mode_backlight = 0x00000000,
 544                .mode_auxpll            = 8, /* 96MHz AUXPLL */
 545                .device_init            = board_au1200fb_panel_init,
 546                .device_shutdown        = board_au1200fb_panel_shutdown,
 547                1024, 1024,
 548                768, 768,
 549        },
 550
 551        [6] = { /* Toshiba 640x480 TFT */
 552                .name = "Toshiba_640x480_TFT",
 553                .monspecs = {
 554                        .modedb = NULL,
 555                        .modedb_len = 0,
 556                        .hfmin = 30000,
 557                        .hfmax = 70000,
 558                        .vfmin = 60,
 559                        .vfmax = 60,
 560                        .dclkmin = 6000000,
 561                        .dclkmax = 28000000,
 562                        .input = FB_DISP_RGB,
 563                },
 564                .mode_screen            = LCD_SCREEN_SX_N(640) |
 565                        LCD_SCREEN_SY_N(480),
 566                .mode_horztiming        = LCD_HORZTIMING_HPW_N(96) |
 567                        LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51),
 568                .mode_verttiming        = LCD_VERTTIMING_VPW_N(2) |
 569                        LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32),
 570                .mode_clkcontrol        = 0x00000000, /* /4=24Mhz */
 571                .mode_pwmdiv            = 0x8000063f,
 572                .mode_pwmhi             = 0x03400000,
 573                .mode_outmask   = 0x00fcfcfc,
 574                .mode_fifoctrl  = 0x2f2f2f2f,
 575                .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 576                .mode_backlight = 0x00000000,
 577                .mode_auxpll            = 8, /* 96MHz AUXPLL */
 578                .device_init            = board_au1200fb_panel_init,
 579                .device_shutdown        = board_au1200fb_panel_shutdown,
 580                640, 480,
 581                640, 480,
 582        },
 583
 584        [7] = { /* Sharp 320x240 TFT */
 585                .name = "Sharp_320x240_TFT",
 586                .monspecs = {
 587                        .modedb = NULL,
 588                        .modedb_len = 0,
 589                        .hfmin = 12500,
 590                        .hfmax = 20000,
 591                        .vfmin = 38,
 592                        .vfmax = 81,
 593                        .dclkmin = 4500000,
 594                        .dclkmax = 6800000,
 595                        .input = FB_DISP_RGB,
 596                },
 597                .mode_screen            = LCD_SCREEN_SX_N(320) |
 598                        LCD_SCREEN_SY_N(240),
 599                .mode_horztiming        = LCD_HORZTIMING_HPW_N(60) |
 600                        LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2),
 601                .mode_verttiming        = LCD_VERTTIMING_VPW_N(2) |
 602                        LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5),
 603                .mode_clkcontrol        = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/
 604                .mode_pwmdiv            = 0x8000063f,
 605                .mode_pwmhi             = 0x03400000,
 606                .mode_outmask   = 0x00fcfcfc,
 607                .mode_fifoctrl  = 0x2f2f2f2f,
 608                .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 609                .mode_backlight = 0x00000000,
 610                .mode_auxpll            = 8, /* 96MHz AUXPLL */
 611                .device_init            = board_au1200fb_panel_init,
 612                .device_shutdown        = board_au1200fb_panel_shutdown,
 613                320, 320,
 614                240, 240,
 615        },
 616
 617        [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */
 618                .name = "Toppoly_TD070WGCB2",
 619                .monspecs = {
 620                        .modedb = NULL,
 621                        .modedb_len = 0,
 622                        .hfmin = 30000,
 623                        .hfmax = 70000,
 624                        .vfmin = 60,
 625                        .vfmax = 60,
 626                        .dclkmin = 6000000,
 627                        .dclkmax = 28000000,
 628                        .input = FB_DISP_RGB,
 629                },
 630                .mode_screen            = LCD_SCREEN_SX_N(856) |
 631                        LCD_SCREEN_SY_N(480),
 632                .mode_horztiming        = LCD_HORZTIMING_HND2_N(43) |
 633                        LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114),
 634                .mode_verttiming        = LCD_VERTTIMING_VND2_N(20) |
 635                        LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4),
 636                .mode_clkcontrol        = 0x00020001, /* /4=24Mhz */
 637                .mode_pwmdiv            = 0x8000063f,
 638                .mode_pwmhi             = 0x03400000,
 639                .mode_outmask   = 0x00fcfcfc,
 640                .mode_fifoctrl  = 0x2f2f2f2f,
 641                .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 642                .mode_backlight = 0x00000000,
 643                .mode_auxpll            = 8, /* 96MHz AUXPLL */
 644                .device_init            = board_au1200fb_panel_init,
 645                .device_shutdown        = board_au1200fb_panel_shutdown,
 646                856, 856,
 647                480, 480,
 648        },
 649};
 650
 651#define NUM_PANELS (ARRAY_SIZE(known_lcd_panels))
 652
 653/********************************************************************/
 654
 655#ifdef CONFIG_PM
 656static int set_brightness(unsigned int brightness)
 657{
 658        unsigned int hi1, divider;
 659
 660        /* limit brightness pwm duty to >= 30/1600 */
 661        if (brightness < 30) {
 662                brightness = 30;
 663        }
 664        divider = (lcd->pwmdiv & 0x3FFFF) + 1;
 665        hi1 = (lcd->pwmhi >> 16) + 1;
 666        hi1 = (((brightness & 0xFF) + 1) * divider >> 8);
 667        lcd->pwmhi &= 0xFFFF;
 668        lcd->pwmhi |= (hi1 << 16);
 669
 670        return brightness;
 671}
 672#endif /* CONFIG_PM */
 673
 674static int winbpp (unsigned int winctrl1)
 675{
 676        int bits = 0;
 677
 678        /* how many bits are needed for each pixel format */
 679        switch (winctrl1 & LCD_WINCTRL1_FRM) {
 680        case LCD_WINCTRL1_FRM_1BPP:
 681                bits = 1;
 682                break;
 683        case LCD_WINCTRL1_FRM_2BPP:
 684                bits = 2;
 685                break;
 686        case LCD_WINCTRL1_FRM_4BPP:
 687                bits = 4;
 688                break;
 689        case LCD_WINCTRL1_FRM_8BPP:
 690                bits = 8;
 691                break;
 692        case LCD_WINCTRL1_FRM_12BPP:
 693        case LCD_WINCTRL1_FRM_16BPP655:
 694        case LCD_WINCTRL1_FRM_16BPP565:
 695        case LCD_WINCTRL1_FRM_16BPP556:
 696        case LCD_WINCTRL1_FRM_16BPPI1555:
 697        case LCD_WINCTRL1_FRM_16BPPI5551:
 698        case LCD_WINCTRL1_FRM_16BPPA1555:
 699        case LCD_WINCTRL1_FRM_16BPPA5551:
 700                bits = 16;
 701                break;
 702        case LCD_WINCTRL1_FRM_24BPP:
 703        case LCD_WINCTRL1_FRM_32BPP:
 704                bits = 32;
 705                break;
 706        }
 707
 708        return bits;
 709}
 710
 711static int fbinfo2index (struct fb_info *fb_info)
 712{
 713        int i;
 714
 715        for (i = 0; i < CONFIG_FB_AU1200_DEVS; ++i) {
 716                if (fb_info == (struct fb_info *)(&_au1200fb_devices[i].fb_info))
 717                        return i;
 718        }
 719        printk("au1200fb: ERROR: fbinfo2index failed!\n");
 720        return -1;
 721}
 722
 723static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
 724        int xpos, int ypos)
 725{
 726        uint32 winctrl0, winctrl1, winenable, fb_offset = 0;
 727        int xsz, ysz;
 728
 729        /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */
 730
 731        winctrl0 = lcd->window[plane].winctrl0;
 732        winctrl1 = lcd->window[plane].winctrl1;
 733        winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN);
 734        winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY);
 735
 736        /* Check for off-screen adjustments */
 737        xsz = win->w[plane].xres;
 738        ysz = win->w[plane].yres;
 739        if ((xpos + win->w[plane].xres) > panel->Xres) {
 740                /* Off-screen to the right */
 741                xsz = panel->Xres - xpos; /* off by 1 ??? */
 742                /*printk("off screen right\n");*/
 743        }
 744
 745        if ((ypos + win->w[plane].yres) > panel->Yres) {
 746                /* Off-screen to the bottom */
 747                ysz = panel->Yres - ypos; /* off by 1 ??? */
 748                /*printk("off screen bottom\n");*/
 749        }
 750
 751        if (xpos < 0) {
 752                /* Off-screen to the left */
 753                xsz = win->w[plane].xres + xpos;
 754                fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);
 755                xpos = 0;
 756                /*printk("off screen left\n");*/
 757        }
 758
 759        if (ypos < 0) {
 760                /* Off-screen to the top */
 761                ysz = win->w[plane].yres + ypos;
 762                /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */
 763                ypos = 0;
 764                /*printk("off screen top\n");*/
 765        }
 766
 767        /* record settings */
 768        win->w[plane].xpos = xpos;
 769        win->w[plane].ypos = ypos;
 770
 771        xsz -= 1;
 772        ysz -= 1;
 773        winctrl0 |= (xpos << 21);
 774        winctrl0 |= (ypos << 10);
 775        winctrl1 |= (xsz << 11);
 776        winctrl1 |= (ysz << 0);
 777
 778        /* Disable the window while making changes, then restore WINEN */
 779        winenable = lcd->winenable & (1 << plane);
 780        au_sync();
 781        lcd->winenable &= ~(1 << plane);
 782        lcd->window[plane].winctrl0 = winctrl0;
 783        lcd->window[plane].winctrl1 = winctrl1;
 784        lcd->window[plane].winbuf0 =
 785        lcd->window[plane].winbuf1 = fbdev->fb_phys;
 786        lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
 787        lcd->winenable |= winenable;
 788        au_sync();
 789
 790        return 0;
 791}
 792
 793static void au1200_setpanel (struct panel_settings *newpanel)
 794{
 795        /*
 796         * Perform global setup/init of LCD controller
 797         */
 798        uint32 winenable;
 799
 800        /* Make sure all windows disabled */
 801        winenable = lcd->winenable;
 802        lcd->winenable = 0;
 803        au_sync();
 804        /*
 805         * Ensure everything is disabled before reconfiguring
 806         */
 807        if (lcd->screen & LCD_SCREEN_SEN) {
 808                /* Wait for vertical sync period */
 809                lcd->intstatus = LCD_INT_SS;
 810                while ((lcd->intstatus & LCD_INT_SS) == 0) {
 811                        au_sync();
 812                }
 813
 814                lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/
 815
 816                do {
 817                        lcd->intstatus = lcd->intstatus; /*clear interrupts*/
 818                        au_sync();
 819                /*wait for controller to shut down*/
 820                } while ((lcd->intstatus & LCD_INT_SD) == 0);
 821
 822                /* Call shutdown of current panel (if up) */
 823                /* this must occur last, because if an external clock is driving
 824                    the controller, the clock cannot be turned off before first
 825                        shutting down the controller.
 826                 */
 827                if (panel->device_shutdown != NULL)
 828                        panel->device_shutdown();
 829        }
 830
 831        /* Newpanel == NULL indicates a shutdown operation only */
 832        if (newpanel == NULL)
 833                return;
 834
 835        panel = newpanel;
 836
 837        printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres);
 838
 839        /*
 840         * Setup clocking if internal LCD clock source (assumes sys_auxpll valid)
 841         */
 842        if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
 843        {
 844                uint32 sys_clksrc;
 845                au_writel(panel->mode_auxpll, SYS_AUXPLL);
 846                sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f;
 847                sys_clksrc |= panel->mode_toyclksrc;
 848                au_writel(sys_clksrc, SYS_CLKSRC);
 849        }
 850
 851        /*
 852         * Configure panel timings
 853         */
 854        lcd->screen = panel->mode_screen;
 855        lcd->horztiming = panel->mode_horztiming;
 856        lcd->verttiming = panel->mode_verttiming;
 857        lcd->clkcontrol = panel->mode_clkcontrol;
 858        lcd->pwmdiv = panel->mode_pwmdiv;
 859        lcd->pwmhi = panel->mode_pwmhi;
 860        lcd->outmask = panel->mode_outmask;
 861        lcd->fifoctrl = panel->mode_fifoctrl;
 862        au_sync();
 863
 864        /* fixme: Check window settings to make sure still valid
 865         * for new geometry */
 866#if 0
 867        au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos);
 868        au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos);
 869        au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos);
 870        au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos);
 871#endif
 872        lcd->winenable = winenable;
 873
 874        /*
 875         * Re-enable screen now that it is configured
 876         */
 877        lcd->screen |= LCD_SCREEN_SEN;
 878        au_sync();
 879
 880        /* Call init of panel */
 881        if (panel->device_init != NULL) panel->device_init();
 882
 883        /* FIX!!!! not appropriate on panel change!!! Global setup/init */
 884        lcd->intenable = 0;
 885        lcd->intstatus = ~0;
 886        lcd->backcolor = win->mode_backcolor;
 887
 888        /* Setup Color Key - FIX!!! */
 889        lcd->colorkey = win->mode_colorkey;
 890        lcd->colorkeymsk = win->mode_colorkeymsk;
 891
 892        /* Setup HWCursor - FIX!!! Need to support this eventually */
 893        lcd->hwc.cursorctrl = 0;
 894        lcd->hwc.cursorpos = 0;
 895        lcd->hwc.cursorcolor0 = 0;
 896        lcd->hwc.cursorcolor1 = 0;
 897        lcd->hwc.cursorcolor2 = 0;
 898        lcd->hwc.cursorcolor3 = 0;
 899
 900
 901#if 0
 902#define D(X) printk("%25s: %08X\n", #X, X)
 903        D(lcd->screen);
 904        D(lcd->horztiming);
 905        D(lcd->verttiming);
 906        D(lcd->clkcontrol);
 907        D(lcd->pwmdiv);
 908        D(lcd->pwmhi);
 909        D(lcd->outmask);
 910        D(lcd->fifoctrl);
 911        D(lcd->window[0].winctrl0);
 912        D(lcd->window[0].winctrl1);
 913        D(lcd->window[0].winctrl2);
 914        D(lcd->window[0].winbuf0);
 915        D(lcd->window[0].winbuf1);
 916        D(lcd->window[0].winbufctrl);
 917        D(lcd->window[1].winctrl0);
 918        D(lcd->window[1].winctrl1);
 919        D(lcd->window[1].winctrl2);
 920        D(lcd->window[1].winbuf0);
 921        D(lcd->window[1].winbuf1);
 922        D(lcd->window[1].winbufctrl);
 923        D(lcd->window[2].winctrl0);
 924        D(lcd->window[2].winctrl1);
 925        D(lcd->window[2].winctrl2);
 926        D(lcd->window[2].winbuf0);
 927        D(lcd->window[2].winbuf1);
 928        D(lcd->window[2].winbufctrl);
 929        D(lcd->window[3].winctrl0);
 930        D(lcd->window[3].winctrl1);
 931        D(lcd->window[3].winctrl2);
 932        D(lcd->window[3].winbuf0);
 933        D(lcd->window[3].winbuf1);
 934        D(lcd->window[3].winbufctrl);
 935        D(lcd->winenable);
 936        D(lcd->intenable);
 937        D(lcd->intstatus);
 938        D(lcd->backcolor);
 939        D(lcd->winenable);
 940        D(lcd->colorkey);
 941    D(lcd->colorkeymsk);
 942        D(lcd->hwc.cursorctrl);
 943        D(lcd->hwc.cursorpos);
 944        D(lcd->hwc.cursorcolor0);
 945        D(lcd->hwc.cursorcolor1);
 946        D(lcd->hwc.cursorcolor2);
 947        D(lcd->hwc.cursorcolor3);
 948#endif
 949}
 950
 951static void au1200_setmode(struct au1200fb_device *fbdev)
 952{
 953        int plane = fbdev->plane;
 954        /* Window/plane setup */
 955        lcd->window[plane].winctrl1 = ( 0
 956                | LCD_WINCTRL1_PRI_N(plane)
 957                | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */
 958                ) ;
 959
 960        au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos);
 961
 962        lcd->window[plane].winctrl2 = ( 0
 963                | LCD_WINCTRL2_CKMODE_00
 964                | LCD_WINCTRL2_DBM
 965                | LCD_WINCTRL2_BX_N( fbdev->fb_info.fix.line_length)
 966                | LCD_WINCTRL2_SCX_1
 967                | LCD_WINCTRL2_SCY_1
 968                ) ;
 969        lcd->winenable |= win->w[plane].mode_winenable;
 970        au_sync();
 971}
 972
 973
 974/* Inline helpers */
 975
 976/*#define panel_is_dual(panel)  ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
 977/*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
 978
 979#define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN)
 980
 981/* Bitfields format supported by the controller. */
 982static struct fb_bitfield rgb_bitfields[][4] = {
 983        /*     Red,        Green,        Blue,       Transp   */
 984        [LCD_WINCTRL1_FRM_16BPP655 >> 25] =
 985                { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
 986
 987        [LCD_WINCTRL1_FRM_16BPP565 >> 25] =
 988                { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
 989
 990        [LCD_WINCTRL1_FRM_16BPP556 >> 25] =
 991                { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } },
 992
 993        [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] =
 994                { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
 995
 996        [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] =
 997                { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } },
 998
 999        [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] =
1000                { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } },
1001
1002        [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] =
1003                { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } },
1004
1005        [LCD_WINCTRL1_FRM_24BPP >> 25] =
1006                { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } },
1007
1008        [LCD_WINCTRL1_FRM_32BPP >> 25] =
1009                { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } },
1010};
1011
1012/*-------------------------------------------------------------------------*/
1013
1014/* Helpers */
1015
1016static void au1200fb_update_fbinfo(struct fb_info *fbi)
1017{
1018        /* FIX!!!! This also needs to take the window pixel format into account!!! */
1019
1020        /* Update var-dependent FB info */
1021        if (panel_is_color(panel)) {
1022                if (fbi->var.bits_per_pixel <= 8) {
1023                        /* palettized */
1024                        fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1025                        fbi->fix.line_length = fbi->var.xres_virtual /
1026                                (8/fbi->var.bits_per_pixel);
1027                } else {
1028                        /* non-palettized */
1029                        fbi->fix.visual = FB_VISUAL_TRUECOLOR;
1030                        fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8);
1031                }
1032        } else {
1033                /* mono FIX!!! mono 8 and 4 bits */
1034                fbi->fix.visual = FB_VISUAL_MONO10;
1035                fbi->fix.line_length = fbi->var.xres_virtual / 8;
1036        }
1037
1038        fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual;
1039        print_dbg("line length: %d\n", fbi->fix.line_length);
1040        print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel);
1041}
1042
1043/*-------------------------------------------------------------------------*/
1044
1045/* AU1200 framebuffer driver */
1046
1047/* fb_check_var
1048 * Validate var settings with hardware restrictions and modify it if necessary
1049 */
1050static int au1200fb_fb_check_var(struct fb_var_screeninfo *var,
1051        struct fb_info *fbi)
1052{
1053        struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi;
1054        u32 pixclock;
1055        int screen_size, plane;
1056
1057        plane = fbdev->plane;
1058
1059        /* Make sure that the mode respect all LCD controller and
1060         * panel restrictions. */
1061        var->xres = win->w[plane].xres;
1062        var->yres = win->w[plane].yres;
1063
1064        /* No need for virtual resolution support */
1065        var->xres_virtual = var->xres;
1066        var->yres_virtual = var->yres;
1067
1068        var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1);
1069
1070        screen_size = var->xres_virtual * var->yres_virtual;
1071        if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8);
1072        else screen_size /= (8/var->bits_per_pixel);
1073
1074        if (fbdev->fb_len < screen_size)
1075                return -EINVAL; /* Virtual screen is to big, abort */
1076
1077        /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */
1078        /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel
1079         * clock can only be obtain by dividing this value by an even integer.
1080         * Fallback to a slower pixel clock if necessary. */
1081        pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin);
1082        pixclock = min(pixclock, min(fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2));
1083
1084        if (AU1200_LCD_MAX_CLK % pixclock) {
1085                int diff = AU1200_LCD_MAX_CLK % pixclock;
1086                pixclock -= diff;
1087        }
1088
1089        var->pixclock = KHZ2PICOS(pixclock/1000);
1090#if 0
1091        if (!panel_is_active(panel)) {
1092                int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1;
1093
1094                if (!panel_is_color(panel)
1095                        && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) {
1096                        /* STN 8bit mono panel support is up to 6MHz pixclock */
1097                        var->pixclock = KHZ2PICOS(6000);
1098                } else if (!pcd) {
1099                        /* Other STN panel support is up to 12MHz  */
1100                        var->pixclock = KHZ2PICOS(12000);
1101                }
1102        }
1103#endif
1104        /* Set bitfield accordingly */
1105        switch (var->bits_per_pixel) {
1106                case 16:
1107                {
1108                        /* 16bpp True color.
1109                         * These must be set to MATCH WINCTRL[FORM] */
1110                        int idx;
1111                        idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1112                        var->red    = rgb_bitfields[idx][0];
1113                        var->green  = rgb_bitfields[idx][1];
1114                        var->blue   = rgb_bitfields[idx][2];
1115                        var->transp = rgb_bitfields[idx][3];
1116                        break;
1117                }
1118
1119                case 32:
1120                {
1121                        /* 32bpp True color.
1122                         * These must be set to MATCH WINCTRL[FORM] */
1123                        int idx;
1124                        idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1125                        var->red    = rgb_bitfields[idx][0];
1126                        var->green  = rgb_bitfields[idx][1];
1127                        var->blue   = rgb_bitfields[idx][2];
1128                        var->transp = rgb_bitfields[idx][3];
1129                        break;
1130                }
1131                default:
1132                        print_dbg("Unsupported depth %dbpp", var->bits_per_pixel);
1133                        return -EINVAL;
1134        }
1135
1136        return 0;
1137}
1138
1139/* fb_set_par
1140 * Set hardware with var settings. This will enable the controller with a
1141 * specific mode, normally validated with the fb_check_var method
1142 */
1143static int au1200fb_fb_set_par(struct fb_info *fbi)
1144{
1145        struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi;
1146
1147        au1200fb_update_fbinfo(fbi);
1148        au1200_setmode(fbdev);
1149
1150        return 0;
1151}
1152
1153/* fb_setcolreg
1154 * Set color in LCD palette.
1155 */
1156static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
1157        unsigned blue, unsigned transp, struct fb_info *fbi)
1158{
1159        volatile u32 *palette = lcd->palette;
1160        u32 value;
1161
1162        if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1))
1163                return -EINVAL;
1164
1165        if (fbi->var.grayscale) {
1166                /* Convert color to grayscale */
1167                red = green = blue =
1168                        (19595 * red + 38470 * green + 7471 * blue) >> 16;
1169        }
1170
1171        if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) {
1172                /* Place color in the pseudopalette */
1173                if (regno > 16)
1174                        return -EINVAL;
1175
1176                palette = (u32*) fbi->pseudo_palette;
1177
1178                red   >>= (16 - fbi->var.red.length);
1179                green >>= (16 - fbi->var.green.length);
1180                blue  >>= (16 - fbi->var.blue.length);
1181
1182                value = (red   << fbi->var.red.offset)  |
1183                        (green << fbi->var.green.offset)|
1184                        (blue  << fbi->var.blue.offset);
1185                value &= 0xFFFF;
1186
1187        } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) {
1188                /* COLOR TFT PALLETTIZED (use RGB 565) */
1189                value = (red & 0xF800)|((green >> 5) &
1190                                0x07E0)|((blue >> 11) & 0x001F);
1191                value &= 0xFFFF;
1192
1193        } else if (0 /*panel_is_color(fbdev->panel)*/) {
1194                /* COLOR STN MODE */
1195                value = 0x1234;
1196                value &= 0xFFF;
1197        } else {
1198                /* MONOCHROME MODE */
1199                value = (green >> 12) & 0x000F;
1200                value &= 0xF;
1201        }
1202
1203        palette[regno] = value;
1204
1205        return 0;
1206}
1207
1208/* fb_blank
1209 * Blank the screen. Depending on the mode, the screen will be
1210 * activated with the backlight color, or desactivated
1211 */
1212static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi)
1213{
1214        /* Short-circuit screen blanking */
1215        if (noblanking)
1216                return 0;
1217
1218        switch (blank_mode) {
1219
1220        case FB_BLANK_UNBLANK:
1221        case FB_BLANK_NORMAL:
1222                /* printk("turn on panel\n"); */
1223                au1200_setpanel(panel);
1224                break;
1225        case FB_BLANK_VSYNC_SUSPEND:
1226        case FB_BLANK_HSYNC_SUSPEND:
1227        case FB_BLANK_POWERDOWN:
1228                /* printk("turn off panel\n"); */
1229                au1200_setpanel(NULL);
1230                break;
1231        default:
1232                break;
1233
1234        }
1235
1236        /* FB_BLANK_NORMAL is a soft blank */
1237        return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0;
1238}
1239
1240/* fb_mmap
1241 * Map video memory in user space. We don't use the generic fb_mmap
1242 * method mainly to allow the use of the TLB streaming flag (CCA=6)
1243 */
1244static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1245
1246{
1247        unsigned int len;
1248        unsigned long start=0, off;
1249        struct au1200fb_device *fbdev = (struct au1200fb_device *) info;
1250
1251#ifdef CONFIG_PM
1252        au1xxx_pm_access(LCD_pm_dev);
1253#endif
1254
1255        if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) {
1256                return -EINVAL;
1257        }
1258
1259        start = fbdev->fb_phys & PAGE_MASK;
1260        len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len);
1261
1262        off = vma->vm_pgoff << PAGE_SHIFT;
1263
1264        if ((vma->vm_end - vma->vm_start + off) > len) {
1265                return -EINVAL;
1266        }
1267
1268        off += start;
1269        vma->vm_pgoff = off >> PAGE_SHIFT;
1270
1271        vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1272        pgprot_val(vma->vm_page_prot) |= _CACHE_MASK; /* CCA=7 */
1273
1274        vma->vm_flags |= VM_IO;
1275
1276        return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1277                                  vma->vm_end - vma->vm_start,
1278                                  vma->vm_page_prot);
1279
1280        return 0;
1281}
1282
1283static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
1284{
1285
1286        unsigned int hi1, divider;
1287
1288        /* SCREEN_SIZE: user cannot reset size, must switch panel choice */
1289
1290        if (pdata->flags & SCREEN_BACKCOLOR)
1291                lcd->backcolor = pdata->backcolor;
1292
1293        if (pdata->flags & SCREEN_BRIGHTNESS) {
1294
1295                // limit brightness pwm duty to >= 30/1600
1296                if (pdata->brightness < 30) {
1297                        pdata->brightness = 30;
1298                }
1299                divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1300                hi1 = (lcd->pwmhi >> 16) + 1;
1301                hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8);
1302                lcd->pwmhi &= 0xFFFF;
1303                lcd->pwmhi |= (hi1 << 16);
1304        }
1305
1306        if (pdata->flags & SCREEN_COLORKEY)
1307                lcd->colorkey = pdata->colorkey;
1308
1309        if (pdata->flags & SCREEN_MASK)
1310                lcd->colorkeymsk = pdata->mask;
1311        au_sync();
1312}
1313
1314static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
1315{
1316        unsigned int hi1, divider;
1317
1318        pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1;
1319        pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1;
1320
1321        pdata->backcolor = lcd->backcolor;
1322        pdata->colorkey = lcd->colorkey;
1323        pdata->mask = lcd->colorkeymsk;
1324
1325        // brightness
1326        hi1 = (lcd->pwmhi >> 16) + 1;
1327        divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1328        pdata->brightness = ((hi1 << 8) / divider) - 1;
1329        au_sync();
1330}
1331
1332static void set_window(unsigned int plane,
1333        struct au1200_lcd_window_regs_t *pdata)
1334{
1335        unsigned int val, bpp;
1336
1337        /* Window control register 0 */
1338        if (pdata->flags & WIN_POSITION) {
1339                val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX |
1340                                LCD_WINCTRL0_OY);
1341                val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX);
1342                val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY);
1343                lcd->window[plane].winctrl0 = val;
1344        }
1345        if (pdata->flags & WIN_ALPHA_COLOR) {
1346                val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A);
1347                val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A);
1348                lcd->window[plane].winctrl0 = val;
1349        }
1350        if (pdata->flags & WIN_ALPHA_MODE) {
1351                val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN);
1352                val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN);
1353                lcd->window[plane].winctrl0 = val;
1354        }
1355
1356        /* Window control register 1 */
1357        if (pdata->flags & WIN_PRIORITY) {
1358                val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI);
1359                val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI);
1360                lcd->window[plane].winctrl1 = val;
1361        }
1362        if (pdata->flags & WIN_CHANNEL) {
1363                val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE);
1364                val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE);
1365                lcd->window[plane].winctrl1 = val;
1366        }
1367        if (pdata->flags & WIN_BUFFER_FORMAT) {
1368                val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM);
1369                val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM);
1370                lcd->window[plane].winctrl1 = val;
1371        }
1372        if (pdata->flags & WIN_COLOR_ORDER) {
1373                val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO);
1374                val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO);
1375                lcd->window[plane].winctrl1 = val;
1376        }
1377        if (pdata->flags & WIN_PIXEL_ORDER) {
1378                val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO);
1379                val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO);
1380                lcd->window[plane].winctrl1 = val;
1381        }
1382        if (pdata->flags & WIN_SIZE) {
1383                val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX |
1384                                LCD_WINCTRL1_SZY);
1385                val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX);
1386                val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY);
1387                lcd->window[plane].winctrl1 = val;
1388                /* program buffer line width */
1389                bpp = winbpp(val) / 8;
1390                val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX);
1391                val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX);
1392                lcd->window[plane].winctrl2 = val;
1393        }
1394
1395        /* Window control register 2 */
1396        if (pdata->flags & WIN_COLORKEY_MODE) {
1397                val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE);
1398                val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE);
1399                lcd->window[plane].winctrl2 = val;
1400        }
1401        if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) {
1402                val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM);
1403                val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM);
1404                lcd->window[plane].winctrl2 = val;
1405        }
1406        if (pdata->flags & WIN_RAM_ARRAY_MODE) {
1407                val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM);
1408                val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM);
1409                lcd->window[plane].winctrl2 = val;
1410        }
1411
1412        /* Buffer line width programmed with WIN_SIZE */
1413
1414        if (pdata->flags & WIN_BUFFER_SCALE) {
1415                val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX |
1416                                LCD_WINCTRL2_SCY);
1417                val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX);
1418                val |= ((pdata->ysize) & LCD_WINCTRL2_SCY);
1419                lcd->window[plane].winctrl2 = val;
1420        }
1421
1422        if (pdata->flags & WIN_ENABLE) {
1423                val = lcd->winenable;
1424                val &= ~(1<<plane);
1425                val |= (pdata->enable & 1) << plane;
1426                lcd->winenable = val;
1427        }
1428        au_sync();
1429}
1430
1431static void get_window(unsigned int plane,
1432        struct au1200_lcd_window_regs_t *pdata)
1433{
1434        /* Window control register 0 */
1435        pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21;
1436        pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10;
1437        pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2;
1438        pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1;
1439
1440        /* Window control register 1 */
1441        pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30;
1442        pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29;
1443        pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1444        pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24;
1445        pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22;
1446        pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1;
1447        pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1;
1448
1449        /* Window control register 2 */
1450        pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24;
1451        pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23;
1452        pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;
1453
1454        pdata->enable = (lcd->winenable >> plane) & 1;
1455        au_sync();
1456}
1457
1458static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
1459                          unsigned long arg)
1460{
1461        int plane;
1462        int val;
1463
1464#ifdef CONFIG_PM
1465        au1xxx_pm_access(LCD_pm_dev);
1466#endif
1467
1468        plane = fbinfo2index(info);
1469        print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane);
1470
1471        if (cmd == AU1200_LCD_FB_IOCTL) {
1472                struct au1200_lcd_iodata_t iodata;
1473
1474                if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata)))
1475                        return -EFAULT;
1476
1477                print_dbg("FB IOCTL called\n");
1478
1479                switch (iodata.subcmd) {
1480                case AU1200_LCD_SET_SCREEN:
1481                        print_dbg("AU1200_LCD_SET_SCREEN\n");
1482                        set_global(cmd, &iodata.global);
1483                        break;
1484
1485                case AU1200_LCD_GET_SCREEN:
1486                        print_dbg("AU1200_LCD_GET_SCREEN\n");
1487                        get_global(cmd, &iodata.global);
1488                        break;
1489
1490                case AU1200_LCD_SET_WINDOW:
1491                        print_dbg("AU1200_LCD_SET_WINDOW\n");
1492                        set_window(plane, &iodata.window);
1493                        break;
1494
1495                case AU1200_LCD_GET_WINDOW:
1496                        print_dbg("AU1200_LCD_GET_WINDOW\n");
1497                        get_window(plane, &iodata.window);
1498                        break;
1499
1500                case AU1200_LCD_SET_PANEL:
1501                        print_dbg("AU1200_LCD_SET_PANEL\n");
1502                        if ((iodata.global.panel_choice >= 0) &&
1503                                        (iodata.global.panel_choice <
1504                                         NUM_PANELS))
1505                        {
1506                                struct panel_settings *newpanel;
1507                                panel_index = iodata.global.panel_choice;
1508                                newpanel = &known_lcd_panels[panel_index];
1509                                au1200_setpanel(newpanel);
1510                        }
1511                        break;
1512
1513                case AU1200_LCD_GET_PANEL:
1514                        print_dbg("AU1200_LCD_GET_PANEL\n");
1515                        iodata.global.panel_choice = panel_index;
1516                        break;
1517
1518                default:
1519                        return -EINVAL;
1520                }
1521
1522                val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata));
1523                if (val) {
1524                        print_dbg("error: could not copy %d bytes\n", val);
1525                        return -EFAULT;
1526                }
1527        }
1528
1529        return 0;
1530}
1531
1532
1533static struct fb_ops au1200fb_fb_ops = {
1534        .owner          = THIS_MODULE,
1535        .fb_check_var   = au1200fb_fb_check_var,
1536        .fb_set_par     = au1200fb_fb_set_par,
1537        .fb_setcolreg   = au1200fb_fb_setcolreg,
1538        .fb_blank       = au1200fb_fb_blank,
1539        .fb_fillrect    = cfb_fillrect,
1540        .fb_copyarea    = cfb_copyarea,
1541        .fb_imageblit   = cfb_imageblit,
1542        .fb_sync        = NULL,
1543        .fb_ioctl       = au1200fb_ioctl,
1544        .fb_mmap        = au1200fb_fb_mmap,
1545};
1546
1547/*-------------------------------------------------------------------------*/
1548
1549static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id)
1550{
1551        /* Nothing to do for now, just clear any pending interrupt */
1552        lcd->intstatus = lcd->intstatus;
1553        au_sync();
1554
1555        return IRQ_HANDLED;
1556}
1557
1558/*-------------------------------------------------------------------------*/
1559
1560/* AU1200 LCD device probe helpers */
1561
1562static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
1563{
1564        struct fb_info *fbi = &fbdev->fb_info;
1565        int bpp;
1566
1567        memset(fbi, 0, sizeof(struct fb_info));
1568        fbi->fbops = &au1200fb_fb_ops;
1569
1570        bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);
1571
1572        /* Copy monitor specs from panel data */
1573        /* fixme: we're setting up LCD controller windows, so these dont give a
1574        damn as to what the monitor specs are (the panel itself does, but that
1575        isnt done here...so maybe need a generic catchall monitor setting??? */
1576        memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs));
1577
1578        /* We first try the user mode passed in argument. If that failed,
1579         * or if no one has been specified, we default to the first mode of the
1580         * panel list. Note that after this call, var data will be set */
1581        if (!fb_find_mode(&fbi->var,
1582                          fbi,
1583                          NULL, /* drv_info.opt_mode, */
1584                          fbi->monspecs.modedb,
1585                          fbi->monspecs.modedb_len,
1586                          fbi->monspecs.modedb,
1587                          bpp)) {
1588
1589                print_err("Cannot find valid mode for panel %s", panel->name);
1590                return -EFAULT;
1591        }
1592
1593        fbi->pseudo_palette = kcalloc(16, sizeof(u32), GFP_KERNEL);
1594        if (!fbi->pseudo_palette) {
1595                return -ENOMEM;
1596        }
1597
1598        if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
1599                print_err("Fail to allocate colormap (%d entries)",
1600                           AU1200_LCD_NBR_PALETTE_ENTRIES);
1601                kfree(fbi->pseudo_palette);
1602                return -EFAULT;
1603        }
1604
1605        strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id));
1606        fbi->fix.smem_start = fbdev->fb_phys;
1607        fbi->fix.smem_len = fbdev->fb_len;
1608        fbi->fix.type = FB_TYPE_PACKED_PIXELS;
1609        fbi->fix.xpanstep = 0;
1610        fbi->fix.ypanstep = 0;
1611        fbi->fix.mmio_start = 0;
1612        fbi->fix.mmio_len = 0;
1613        fbi->fix.accel = FB_ACCEL_NONE;
1614
1615        fbi->screen_base = (char __iomem *) fbdev->fb_mem;
1616
1617        au1200fb_update_fbinfo(fbi);
1618
1619        return 0;
1620}
1621
1622/*-------------------------------------------------------------------------*/
1623
1624/* AU1200 LCD controller device driver */
1625
1626static int au1200fb_drv_probe(struct platform_device *dev)
1627{
1628        struct au1200fb_device *fbdev;
1629        unsigned long page;
1630        int bpp, plane, ret;
1631
1632        if (!dev)
1633                return -EINVAL;
1634
1635        for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) {
1636                bpp = winbpp(win->w[plane].mode_winctrl1);
1637                if (win->w[plane].xres == 0)
1638                        win->w[plane].xres = panel->Xres;
1639                if (win->w[plane].yres == 0)
1640                        win->w[plane].yres = panel->Yres;
1641
1642                fbdev = &_au1200fb_devices[plane];
1643                memset(fbdev, 0, sizeof(struct au1200fb_device));
1644                fbdev->plane = plane;
1645
1646                /* Allocate the framebuffer to the maximum screen size */
1647                fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8;
1648
1649                fbdev->fb_mem = dma_alloc_noncoherent(&dev->dev,
1650                                PAGE_ALIGN(fbdev->fb_len),
1651                                &fbdev->fb_phys, GFP_KERNEL);
1652                if (!fbdev->fb_mem) {
1653                        print_err("fail to allocate frambuffer (size: %dK))",
1654                                  fbdev->fb_len / 1024);
1655                        return -ENOMEM;
1656                }
1657
1658                /*
1659                 * Set page reserved so that mmap will work. This is necessary
1660                 * since we'll be remapping normal memory.
1661                 */
1662                for (page = (unsigned long)fbdev->fb_phys;
1663                     page < PAGE_ALIGN((unsigned long)fbdev->fb_phys +
1664                             fbdev->fb_len);
1665                     page += PAGE_SIZE) {
1666                        SetPageReserved(pfn_to_page(page >> PAGE_SHIFT)); /* LCD DMA is NOT coherent on Au1200 */
1667                }
1668                print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
1669                print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
1670
1671                /* Init FB data */
1672                if ((ret = au1200fb_init_fbinfo(fbdev)) < 0)
1673                        goto failed;
1674
1675                /* Register new framebuffer */
1676                if ((ret = register_framebuffer(&fbdev->fb_info)) < 0) {
1677                        print_err("cannot register new framebuffer");
1678                        goto failed;
1679                }
1680
1681                au1200fb_fb_set_par(&fbdev->fb_info);
1682
1683#if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
1684                if (plane == 0)
1685                        if (fb_prepare_logo(&fbdev->fb_info, FB_ROTATE_UR)) {
1686                                /* Start display and show logo on boot */
1687                                fb_set_cmap(&fbdev->fb_info.cmap,
1688                                                &fbdev->fb_info);
1689
1690                                fb_show_logo(&fbdev->fb_info, FB_ROTATE_UR);
1691                        }
1692#endif
1693        }
1694
1695        /* Now hook interrupt too */
1696        if ((ret = request_irq(AU1200_LCD_INT, au1200fb_handle_irq,
1697                          IRQF_DISABLED | IRQF_SHARED, "lcd", (void *)dev)) < 0) {
1698                print_err("fail to request interrupt line %d (err: %d)",
1699                          AU1200_LCD_INT, ret);
1700                goto failed;
1701        }
1702
1703        return 0;
1704
1705failed:
1706        /* NOTE: This only does the current plane/window that failed; others are still active */
1707        if (fbdev->fb_mem)
1708                dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len),
1709                                fbdev->fb_mem, fbdev->fb_phys);
1710        if (fbdev->fb_info.cmap.len != 0)
1711                fb_dealloc_cmap(&fbdev->fb_info.cmap);
1712        if (fbdev->fb_info.pseudo_palette)
1713                kfree(fbdev->fb_info.pseudo_palette);
1714        if (plane == 0)
1715                free_irq(AU1200_LCD_INT, (void*)dev);
1716        return ret;
1717}
1718
1719static int au1200fb_drv_remove(struct platform_device *dev)
1720{
1721        struct au1200fb_device *fbdev;
1722        int plane;
1723
1724        if (!dev)
1725                return -ENODEV;
1726
1727        /* Turn off the panel */
1728        au1200_setpanel(NULL);
1729
1730        for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane)
1731        {
1732                fbdev = &_au1200fb_devices[plane];
1733
1734                /* Clean up all probe data */
1735                unregister_framebuffer(&fbdev->fb_info);
1736                if (fbdev->fb_mem)
1737                        dma_free_noncoherent(&dev->dev,
1738                                        PAGE_ALIGN(fbdev->fb_len),
1739                                        fbdev->fb_mem, fbdev->fb_phys);
1740                if (fbdev->fb_info.cmap.len != 0)
1741                        fb_dealloc_cmap(&fbdev->fb_info.cmap);
1742                if (fbdev->fb_info.pseudo_palette)
1743                        kfree(fbdev->fb_info.pseudo_palette);
1744        }
1745
1746        free_irq(AU1200_LCD_INT, (void *)dev);
1747
1748        return 0;
1749}
1750
1751#ifdef CONFIG_PM
1752static int au1200fb_drv_suspend(struct platform_device *dev, u32 state)
1753{
1754        /* TODO */
1755        return 0;
1756}
1757
1758static int au1200fb_drv_resume(struct platform_device *dev)
1759{
1760        /* TODO */
1761        return 0;
1762}
1763#endif /* CONFIG_PM */
1764
1765static struct platform_driver au1200fb_driver = {
1766        .driver = {
1767                .name           = "au1200-lcd",
1768                .owner          = THIS_MODULE,
1769        },
1770        .probe          = au1200fb_drv_probe,
1771        .remove         = au1200fb_drv_remove,
1772#ifdef CONFIG_PM
1773        .suspend        = au1200fb_drv_suspend,
1774        .resume         = au1200fb_drv_resume,
1775#endif
1776};
1777
1778/*-------------------------------------------------------------------------*/
1779
1780/* Kernel driver */
1781
1782static void au1200fb_setup(void)
1783{
1784        char* options = NULL;
1785        char* this_opt;
1786        int num_panels = ARRAY_SIZE(known_lcd_panels);
1787        int panel_idx = -1;
1788
1789        fb_get_options(DRIVER_NAME, &options);
1790
1791        if (options) {
1792                while ((this_opt = strsep(&options,",")) != NULL) {
1793                        /* Panel option - can be panel name,
1794                         * "bs" for board-switch, or number/index */
1795                        if (!strncmp(this_opt, "panel:", 6)) {
1796                                int i;
1797                                long int li;
1798                                char *endptr;
1799                                this_opt += 6;
1800                                /* First check for index, which allows
1801                                 * to short circuit this mess */
1802                                li = simple_strtol(this_opt, &endptr, 0);
1803                                if (*endptr == '\0') {
1804                                        panel_idx = (int)li;
1805                                }
1806                                else if (strcmp(this_opt, "bs") == 0) {
1807                                        extern int board_au1200fb_panel(void);
1808                                        panel_idx = board_au1200fb_panel();
1809                                }
1810
1811                                else
1812                                for (i = 0; i < num_panels; i++) {
1813                                        if (!strcmp(this_opt, known_lcd_panels[i].name)) {
1814                                                panel_idx = i;
1815                                                break;
1816                                        }
1817                                }
1818
1819                                if ((panel_idx < 0) || (panel_idx >= num_panels)) {
1820                                                print_warn("Panel %s not supported!", this_opt);
1821                                }
1822                                else
1823                                        panel_index = panel_idx;
1824                        }
1825
1826                        else if (strncmp(this_opt, "nohwcursor", 10) == 0) {
1827                                nohwcursor = 1;
1828                        }
1829
1830                        /* Unsupported option */
1831                        else {
1832                                print_warn("Unsupported option \"%s\"", this_opt);
1833                        }
1834                }
1835        }
1836}
1837
1838#ifdef CONFIG_PM
1839static int au1200fb_pm_callback(au1xxx_power_dev_t *dev,
1840                au1xxx_request_t request, void *data) {
1841        int retval = -1;
1842        unsigned int d = 0;
1843        unsigned int brightness = 0;
1844
1845        if (request == AU1XXX_PM_SLEEP) {
1846                board_au1200fb_panel_shutdown();
1847        }
1848        else if (request == AU1XXX_PM_WAKEUP) {
1849                if(dev->prev_state == SLEEP_STATE)
1850                {
1851                        int plane;
1852                        au1200_setpanel(panel);
1853                        for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane)         {
1854                                struct au1200fb_device *fbdev;
1855                                fbdev = &_au1200fb_devices[plane];
1856                                au1200fb_fb_set_par(&fbdev->fb_info);
1857                        }
1858                }
1859
1860                d = *((unsigned int*)data);
1861                if(d <=10) brightness = 26;
1862                else if(d<=20) brightness = 51;
1863                else if(d<=30) brightness = 77;
1864                else if(d<=40) brightness = 102;
1865                else if(d<=50) brightness = 128;
1866                else if(d<=60) brightness = 153;
1867                else if(d<=70) brightness = 179;
1868                else if(d<=80) brightness = 204;
1869                else if(d<=90) brightness = 230;
1870                else brightness = 255;
1871                set_brightness(brightness);
1872        } else if (request == AU1XXX_PM_GETSTATUS) {
1873                return dev->cur_state;
1874        } else if (request == AU1XXX_PM_ACCESS) {
1875                if (dev->cur_state != SLEEP_STATE)
1876                        return retval;
1877                else {
1878                        au1200_setpanel(panel);
1879                }
1880        } else if (request == AU1XXX_PM_IDLE) {
1881        } else if (request == AU1XXX_PM_CLEANUP) {
1882        }
1883
1884        return retval;
1885}
1886#endif
1887
1888static int __init au1200fb_init(void)
1889{
1890        print_info("" DRIVER_DESC "");
1891
1892        /* Setup driver with options */
1893        au1200fb_setup();
1894
1895        /* Point to the panel selected */
1896        panel = &known_lcd_panels[panel_index];
1897        win = &windows[window_index];
1898
1899        printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name);
1900        printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name);
1901
1902        /* Kickstart the panel, the framebuffers/windows come soon enough */
1903        au1200_setpanel(panel);
1904
1905        #ifdef CONFIG_PM
1906        LCD_pm_dev = new_au1xxx_power_device("LCD", &au1200fb_pm_callback, NULL);
1907        if ( LCD_pm_dev == NULL)
1908                printk(KERN_INFO "Unable to create a power management device entry for the au1200fb.\n");
1909        else
1910                printk(KERN_INFO "Power management device entry for the au1200fb loaded.\n");
1911        #endif
1912
1913        return platform_driver_register(&au1200fb_driver);
1914}
1915
1916static void __exit au1200fb_cleanup(void)
1917{
1918        platform_driver_unregister(&au1200fb_driver);
1919}
1920
1921module_init(au1200fb_init);
1922module_exit(au1200fb_cleanup);
1923
1924MODULE_DESCRIPTION(DRIVER_DESC);
1925MODULE_LICENSE("GPL");
1926
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