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