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0001 /*
0002  * BRIEF MODULE DESCRIPTION
0003  *  Au1200 LCD Driver.
0004  *
0005  * Copyright 2004-2005 AMD
0006  * Author: AMD
0007  *
0008  * Based on:
0009  * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device
0010  *  Created 28 Dec 1997 by Geert Uytterhoeven
0011  *
0012  *  This program is free software; you can redistribute  it and/or modify it
0013  *  under  the terms of  the GNU General  Public License as published by the
0014  *  Free Software Foundation;  either version 2 of the  License, or (at your
0015  *  option) any later version.
0016  *
0017  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
0018  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
0019  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
0020  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
0021  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
0022  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
0023  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
0024  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
0025  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
0026  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0027  *
0028  *  You should have received a copy of the  GNU General Public License along
0029  *  with this program; if not, write  to the Free Software Foundation, Inc.,
0030  *  675 Mass Ave, Cambridge, MA 02139, USA.
0031  */
0032 
0033 #include <linux/clk.h>
0034 #include <linux/module.h>
0035 #include <linux/platform_device.h>
0036 #include <linux/kernel.h>
0037 #include <linux/errno.h>
0038 #include <linux/string.h>
0039 #include <linux/mm.h>
0040 #include <linux/fb.h>
0041 #include <linux/init.h>
0042 #include <linux/interrupt.h>
0043 #include <linux/ctype.h>
0044 #include <linux/dma-mapping.h>
0045 #include <linux/slab.h>
0046 #include <linux/uaccess.h>
0047 
0048 #include <asm/mach-au1x00/au1000.h>
0049 #include <asm/mach-au1x00/au1200fb.h>   /* platform_data */
0050 #include "au1200fb.h"
0051 
0052 #define DRIVER_NAME "au1200fb"
0053 #define DRIVER_DESC "LCD controller driver for AU1200 processors"
0054 
0055 #define DEBUG 0
0056 
0057 #define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg)
0058 #define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg)
0059 #define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg)
0060 
0061 #if DEBUG
0062 #define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg)
0063 #else
0064 #define print_dbg(f, arg...) do {} while (0)
0065 #endif
0066 
0067 
0068 #define AU1200_LCD_FB_IOCTL 0x46FF
0069 
0070 #define AU1200_LCD_SET_SCREEN 1
0071 #define AU1200_LCD_GET_SCREEN 2
0072 #define AU1200_LCD_SET_WINDOW 3
0073 #define AU1200_LCD_GET_WINDOW 4
0074 #define AU1200_LCD_SET_PANEL  5
0075 #define AU1200_LCD_GET_PANEL  6
0076 
0077 #define SCREEN_SIZE         (1<< 1)
0078 #define SCREEN_BACKCOLOR    (1<< 2)
0079 #define SCREEN_BRIGHTNESS   (1<< 3)
0080 #define SCREEN_COLORKEY     (1<< 4)
0081 #define SCREEN_MASK         (1<< 5)
0082 
0083 struct au1200_lcd_global_regs_t {
0084     unsigned int flags;
0085     unsigned int xsize;
0086     unsigned int ysize;
0087     unsigned int backcolor;
0088     unsigned int brightness;
0089     unsigned int colorkey;
0090     unsigned int mask;
0091     unsigned int panel_choice;
0092     char panel_desc[80];
0093 
0094 };
0095 
0096 #define WIN_POSITION            (1<< 0)
0097 #define WIN_ALPHA_COLOR         (1<< 1)
0098 #define WIN_ALPHA_MODE          (1<< 2)
0099 #define WIN_PRIORITY            (1<< 3)
0100 #define WIN_CHANNEL             (1<< 4)
0101 #define WIN_BUFFER_FORMAT       (1<< 5)
0102 #define WIN_COLOR_ORDER         (1<< 6)
0103 #define WIN_PIXEL_ORDER         (1<< 7)
0104 #define WIN_SIZE                (1<< 8)
0105 #define WIN_COLORKEY_MODE       (1<< 9)
0106 #define WIN_DOUBLE_BUFFER_MODE  (1<< 10)
0107 #define WIN_RAM_ARRAY_MODE      (1<< 11)
0108 #define WIN_BUFFER_SCALE        (1<< 12)
0109 #define WIN_ENABLE              (1<< 13)
0110 
0111 struct au1200_lcd_window_regs_t {
0112     unsigned int flags;
0113     unsigned int xpos;
0114     unsigned int ypos;
0115     unsigned int alpha_color;
0116     unsigned int alpha_mode;
0117     unsigned int priority;
0118     unsigned int channel;
0119     unsigned int buffer_format;
0120     unsigned int color_order;
0121     unsigned int pixel_order;
0122     unsigned int xsize;
0123     unsigned int ysize;
0124     unsigned int colorkey_mode;
0125     unsigned int double_buffer_mode;
0126     unsigned int ram_array_mode;
0127     unsigned int xscale;
0128     unsigned int yscale;
0129     unsigned int enable;
0130 };
0131 
0132 
0133 struct au1200_lcd_iodata_t {
0134     unsigned int subcmd;
0135     struct au1200_lcd_global_regs_t global;
0136     struct au1200_lcd_window_regs_t window;
0137 };
0138 
0139 #if defined(__BIG_ENDIAN)
0140 #define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11
0141 #else
0142 #define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00
0143 #endif
0144 #define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565
0145 
0146 /* Private, per-framebuffer management information (independent of the panel itself) */
0147 struct au1200fb_device {
0148     struct fb_info *fb_info;        /* FB driver info record */
0149     struct au1200fb_platdata *pd;
0150     struct device *dev;
0151 
0152     int                 plane;
0153     unsigned char*      fb_mem;     /* FrameBuffer memory map */
0154     unsigned int        fb_len;
0155     dma_addr_t          fb_phys;
0156 };
0157 
0158 /********************************************************************/
0159 
0160 /* LCD controller restrictions */
0161 #define AU1200_LCD_MAX_XRES 1280
0162 #define AU1200_LCD_MAX_YRES 1024
0163 #define AU1200_LCD_MAX_BPP  32
0164 #define AU1200_LCD_MAX_CLK  96000000 /* fixme: this needs to go away ? */
0165 #define AU1200_LCD_NBR_PALETTE_ENTRIES 256
0166 
0167 /* Default number of visible screen buffer to allocate */
0168 #define AU1200FB_NBR_VIDEO_BUFFERS 1
0169 
0170 /* Default maximum number of fb devices to create */
0171 #define MAX_DEVICE_COUNT    4
0172 
0173 /* Default window configuration entry to use (see windows[]) */
0174 #define DEFAULT_WINDOW_INDEX    2
0175 
0176 /********************************************************************/
0177 
0178 static struct fb_info *_au1200fb_infos[MAX_DEVICE_COUNT];
0179 static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR;
0180 static int device_count = MAX_DEVICE_COUNT;
0181 static int window_index = DEFAULT_WINDOW_INDEX; /* default is zero */
0182 static int panel_index = 2; /* default is zero */
0183 static struct window_settings *win;
0184 static struct panel_settings *panel;
0185 static int noblanking = 1;
0186 static int nohwcursor = 0;
0187 
0188 struct window_settings {
0189     unsigned char name[64];
0190     uint32 mode_backcolor;
0191     uint32 mode_colorkey;
0192     uint32 mode_colorkeymsk;
0193     struct {
0194         int xres;
0195         int yres;
0196         int xpos;
0197         int ypos;
0198         uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */
0199         uint32 mode_winenable;
0200     } w[4];
0201 };
0202 
0203 #if defined(__BIG_ENDIAN)
0204 #define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00
0205 #else
0206 #define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01
0207 #endif
0208 
0209 /*
0210  * Default window configurations
0211  */
0212 static struct window_settings windows[] = {
0213     { /* Index 0 */
0214         "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
0215         /* mode_backcolor   */ 0x006600ff,
0216         /* mode_colorkey,msk*/ 0, 0,
0217         {
0218             {
0219             /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
0220             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
0221                 LCD_WINCTRL1_PO_16BPP,
0222             /* mode_winenable*/ LCD_WINENABLE_WEN0,
0223             },
0224             {
0225             /* xres, yres, xpos, ypos */ 100, 100, 100, 100,
0226             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
0227                 LCD_WINCTRL1_PO_16BPP |
0228                 LCD_WINCTRL1_PIPE,
0229             /* mode_winenable*/ LCD_WINENABLE_WEN1,
0230             },
0231             {
0232             /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
0233             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
0234                 LCD_WINCTRL1_PO_16BPP,
0235             /* mode_winenable*/ 0,
0236             },
0237             {
0238             /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
0239             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
0240                 LCD_WINCTRL1_PO_16BPP |
0241                 LCD_WINCTRL1_PIPE,
0242             /* mode_winenable*/ 0,
0243             },
0244         },
0245     },
0246 
0247     { /* Index 1 */
0248         "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
0249         /* mode_backcolor   */ 0x006600ff,
0250         /* mode_colorkey,msk*/ 0, 0,
0251         {
0252             {
0253             /* xres, yres, xpos, ypos */ 320, 240, 5, 5,
0254             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP |
0255                 LCD_WINCTRL1_PO_00,
0256             /* mode_winenable*/ LCD_WINENABLE_WEN0,
0257             },
0258             {
0259             /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
0260             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565
0261                 | LCD_WINCTRL1_PO_16BPP,
0262             /* mode_winenable*/ 0,
0263             },
0264             {
0265             /* xres, yres, xpos, ypos */ 100, 100, 0, 0,
0266             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
0267                 LCD_WINCTRL1_PO_16BPP |
0268                 LCD_WINCTRL1_PIPE,
0269             /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
0270             },
0271             {
0272             /* xres, yres, xpos, ypos */ 200, 25, 0, 0,
0273             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
0274                 LCD_WINCTRL1_PO_16BPP |
0275                 LCD_WINCTRL1_PIPE,
0276             /* mode_winenable*/ 0,
0277             },
0278         },
0279     },
0280     { /* Index 2 */
0281         "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
0282         /* mode_backcolor   */ 0x006600ff,
0283         /* mode_colorkey,msk*/ 0, 0,
0284         {
0285             {
0286             /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
0287             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
0288                 LCD_WINCTRL1_PO_16BPP,
0289             /* mode_winenable*/ LCD_WINENABLE_WEN0,
0290             },
0291             {
0292             /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
0293             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
0294                 LCD_WINCTRL1_PO_16BPP,
0295             /* mode_winenable*/ 0,
0296             },
0297             {
0298             /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
0299             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP |
0300                 LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE,
0301             /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
0302             },
0303             {
0304             /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
0305             /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
0306                 LCD_WINCTRL1_PO_16BPP |
0307                 LCD_WINCTRL1_PIPE,
0308             /* mode_winenable*/ 0,
0309             },
0310         },
0311     },
0312     /* Need VGA 640 @ 24bpp, @ 32bpp */
0313     /* Need VGA 800 @ 24bpp, @ 32bpp */
0314     /* Need VGA 1024 @ 24bpp, @ 32bpp */
0315 };
0316 
0317 /*
0318  * Controller configurations for various panels.
0319  */
0320 
0321 struct panel_settings
0322 {
0323     const char name[25];        /* Full name <vendor>_<model> */
0324 
0325     struct  fb_monspecs monspecs;   /* FB monitor specs */
0326 
0327     /* panel timings */
0328     uint32 mode_screen;
0329     uint32 mode_horztiming;
0330     uint32 mode_verttiming;
0331     uint32 mode_clkcontrol;
0332     uint32 mode_pwmdiv;
0333     uint32 mode_pwmhi;
0334     uint32 mode_outmask;
0335     uint32 mode_fifoctrl;
0336     uint32 mode_backlight;
0337     uint32 lcdclk;
0338 #define Xres min_xres
0339 #define Yres min_yres
0340     u32 min_xres;       /* Minimum horizontal resolution */
0341     u32 max_xres;       /* Maximum horizontal resolution */
0342     u32     min_yres;       /* Minimum vertical resolution */
0343     u32     max_yres;       /* Maximum vertical resolution */
0344 };
0345 
0346 /********************************************************************/
0347 /* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */
0348 
0349 /* List of panels known to work with the AU1200 LCD controller.
0350  * To add a new panel, enter the same specifications as the
0351  * Generic_TFT one, and MAKE SURE that it doesn't conflicts
0352  * with the controller restrictions. Restrictions are:
0353  *
0354  * STN color panels: max_bpp <= 12
0355  * STN mono panels: max_bpp <= 4
0356  * TFT panels: max_bpp <= 16
0357  * max_xres <= 800
0358  * max_yres <= 600
0359  */
0360 static struct panel_settings known_lcd_panels[] =
0361 {
0362     [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */
0363         .name = "QVGA_320x240",
0364         .monspecs = {
0365             .modedb = NULL,
0366             .modedb_len = 0,
0367             .hfmin = 30000,
0368             .hfmax = 70000,
0369             .vfmin = 60,
0370             .vfmax = 60,
0371             .dclkmin = 6000000,
0372             .dclkmax = 28000000,
0373             .input = FB_DISP_RGB,
0374         },
0375         .mode_screen        = LCD_SCREEN_SX_N(320) |
0376             LCD_SCREEN_SY_N(240),
0377         .mode_horztiming    = 0x00c4623b,
0378         .mode_verttiming    = 0x00502814,
0379         .mode_clkcontrol    = 0x00020002, /* /4=24Mhz */
0380         .mode_pwmdiv        = 0x00000000,
0381         .mode_pwmhi     = 0x00000000,
0382         .mode_outmask   = 0x00FFFFFF,
0383         .mode_fifoctrl  = 0x2f2f2f2f,
0384         .mode_backlight = 0x00000000,
0385         .lcdclk     = 96,
0386         320, 320,
0387         240, 240,
0388     },
0389 
0390     [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */
0391         .name = "VGA_640x480",
0392         .monspecs = {
0393             .modedb = NULL,
0394             .modedb_len = 0,
0395             .hfmin = 30000,
0396             .hfmax = 70000,
0397             .vfmin = 60,
0398             .vfmax = 60,
0399             .dclkmin = 6000000,
0400             .dclkmax = 28000000,
0401             .input = FB_DISP_RGB,
0402         },
0403         .mode_screen        = 0x13f9df80,
0404         .mode_horztiming    = 0x003c5859,
0405         .mode_verttiming    = 0x00741201,
0406         .mode_clkcontrol    = 0x00020001, /* /4=24Mhz */
0407         .mode_pwmdiv        = 0x00000000,
0408         .mode_pwmhi     = 0x00000000,
0409         .mode_outmask   = 0x00FFFFFF,
0410         .mode_fifoctrl  = 0x2f2f2f2f,
0411         .mode_backlight = 0x00000000,
0412         .lcdclk     = 96,
0413         640, 480,
0414         640, 480,
0415     },
0416 
0417     [2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */
0418         .name = "SVGA_800x600",
0419         .monspecs = {
0420             .modedb = NULL,
0421             .modedb_len = 0,
0422             .hfmin = 30000,
0423             .hfmax = 70000,
0424             .vfmin = 60,
0425             .vfmax = 60,
0426             .dclkmin = 6000000,
0427             .dclkmax = 28000000,
0428             .input = FB_DISP_RGB,
0429         },
0430         .mode_screen        = 0x18fa5780,
0431         .mode_horztiming    = 0x00dc7e77,
0432         .mode_verttiming    = 0x00584805,
0433         .mode_clkcontrol    = 0x00020000, /* /2=48Mhz */
0434         .mode_pwmdiv        = 0x00000000,
0435         .mode_pwmhi     = 0x00000000,
0436         .mode_outmask   = 0x00FFFFFF,
0437         .mode_fifoctrl  = 0x2f2f2f2f,
0438         .mode_backlight = 0x00000000,
0439         .lcdclk     = 96,
0440         800, 800,
0441         600, 600,
0442     },
0443 
0444     [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */
0445         .name = "XVGA_1024x768",
0446         .monspecs = {
0447             .modedb = NULL,
0448             .modedb_len = 0,
0449             .hfmin = 30000,
0450             .hfmax = 70000,
0451             .vfmin = 60,
0452             .vfmax = 60,
0453             .dclkmin = 6000000,
0454             .dclkmax = 28000000,
0455             .input = FB_DISP_RGB,
0456         },
0457         .mode_screen        = 0x1ffaff80,
0458         .mode_horztiming    = 0x007d0e57,
0459         .mode_verttiming    = 0x00740a01,
0460         .mode_clkcontrol    = 0x000A0000, /* /1 */
0461         .mode_pwmdiv        = 0x00000000,
0462         .mode_pwmhi     = 0x00000000,
0463         .mode_outmask   = 0x00FFFFFF,
0464         .mode_fifoctrl  = 0x2f2f2f2f,
0465         .mode_backlight = 0x00000000,
0466         .lcdclk     = 72,
0467         1024, 1024,
0468         768, 768,
0469     },
0470 
0471     [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */
0472         .name = "XVGA_1280x1024",
0473         .monspecs = {
0474             .modedb = NULL,
0475             .modedb_len = 0,
0476             .hfmin = 30000,
0477             .hfmax = 70000,
0478             .vfmin = 60,
0479             .vfmax = 60,
0480             .dclkmin = 6000000,
0481             .dclkmax = 28000000,
0482             .input = FB_DISP_RGB,
0483         },
0484         .mode_screen        = 0x27fbff80,
0485         .mode_horztiming    = 0x00cdb2c7,
0486         .mode_verttiming    = 0x00600002,
0487         .mode_clkcontrol    = 0x000A0000, /* /1 */
0488         .mode_pwmdiv        = 0x00000000,
0489         .mode_pwmhi     = 0x00000000,
0490         .mode_outmask   = 0x00FFFFFF,
0491         .mode_fifoctrl  = 0x2f2f2f2f,
0492         .mode_backlight = 0x00000000,
0493         .lcdclk     = 120,
0494         1280, 1280,
0495         1024, 1024,
0496     },
0497 
0498     [5] = { /* Samsung 1024x768 TFT */
0499         .name = "Samsung_1024x768_TFT",
0500         .monspecs = {
0501             .modedb = NULL,
0502             .modedb_len = 0,
0503             .hfmin = 30000,
0504             .hfmax = 70000,
0505             .vfmin = 60,
0506             .vfmax = 60,
0507             .dclkmin = 6000000,
0508             .dclkmax = 28000000,
0509             .input = FB_DISP_RGB,
0510         },
0511         .mode_screen        = 0x1ffaff80,
0512         .mode_horztiming    = 0x018cc677,
0513         .mode_verttiming    = 0x00241217,
0514         .mode_clkcontrol    = 0x00000000, /* SCB 0x1 /4=24Mhz */
0515         .mode_pwmdiv        = 0x8000063f, /* SCB 0x0 */
0516         .mode_pwmhi     = 0x03400000, /* SCB 0x0 */
0517         .mode_outmask   = 0x00FFFFFF,
0518         .mode_fifoctrl  = 0x2f2f2f2f,
0519         .mode_backlight = 0x00000000,
0520         .lcdclk     = 96,
0521         1024, 1024,
0522         768, 768,
0523     },
0524 
0525     [6] = { /* Toshiba 640x480 TFT */
0526         .name = "Toshiba_640x480_TFT",
0527         .monspecs = {
0528             .modedb = NULL,
0529             .modedb_len = 0,
0530             .hfmin = 30000,
0531             .hfmax = 70000,
0532             .vfmin = 60,
0533             .vfmax = 60,
0534             .dclkmin = 6000000,
0535             .dclkmax = 28000000,
0536             .input = FB_DISP_RGB,
0537         },
0538         .mode_screen        = LCD_SCREEN_SX_N(640) |
0539             LCD_SCREEN_SY_N(480),
0540         .mode_horztiming    = LCD_HORZTIMING_HPW_N(96) |
0541             LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51),
0542         .mode_verttiming    = LCD_VERTTIMING_VPW_N(2) |
0543             LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32),
0544         .mode_clkcontrol    = 0x00000000, /* /4=24Mhz */
0545         .mode_pwmdiv        = 0x8000063f,
0546         .mode_pwmhi     = 0x03400000,
0547         .mode_outmask   = 0x00fcfcfc,
0548         .mode_fifoctrl  = 0x2f2f2f2f,
0549         .mode_backlight = 0x00000000,
0550         .lcdclk     = 96,
0551         640, 480,
0552         640, 480,
0553     },
0554 
0555     [7] = { /* Sharp 320x240 TFT */
0556         .name = "Sharp_320x240_TFT",
0557         .monspecs = {
0558             .modedb = NULL,
0559             .modedb_len = 0,
0560             .hfmin = 12500,
0561             .hfmax = 20000,
0562             .vfmin = 38,
0563             .vfmax = 81,
0564             .dclkmin = 4500000,
0565             .dclkmax = 6800000,
0566             .input = FB_DISP_RGB,
0567         },
0568         .mode_screen        = LCD_SCREEN_SX_N(320) |
0569             LCD_SCREEN_SY_N(240),
0570         .mode_horztiming    = LCD_HORZTIMING_HPW_N(60) |
0571             LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2),
0572         .mode_verttiming    = LCD_VERTTIMING_VPW_N(2) |
0573             LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5),
0574         .mode_clkcontrol    = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/
0575         .mode_pwmdiv        = 0x8000063f,
0576         .mode_pwmhi     = 0x03400000,
0577         .mode_outmask   = 0x00fcfcfc,
0578         .mode_fifoctrl  = 0x2f2f2f2f,
0579         .mode_backlight = 0x00000000,
0580         .lcdclk     = 96, /* 96MHz AUXPLL */
0581         320, 320,
0582         240, 240,
0583     },
0584 
0585     [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */
0586         .name = "Toppoly_TD070WGCB2",
0587         .monspecs = {
0588             .modedb = NULL,
0589             .modedb_len = 0,
0590             .hfmin = 30000,
0591             .hfmax = 70000,
0592             .vfmin = 60,
0593             .vfmax = 60,
0594             .dclkmin = 6000000,
0595             .dclkmax = 28000000,
0596             .input = FB_DISP_RGB,
0597         },
0598         .mode_screen        = LCD_SCREEN_SX_N(856) |
0599             LCD_SCREEN_SY_N(480),
0600         .mode_horztiming    = LCD_HORZTIMING_HND2_N(43) |
0601             LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114),
0602         .mode_verttiming    = LCD_VERTTIMING_VND2_N(20) |
0603             LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4),
0604         .mode_clkcontrol    = 0x00020001, /* /4=24Mhz */
0605         .mode_pwmdiv        = 0x8000063f,
0606         .mode_pwmhi     = 0x03400000,
0607         .mode_outmask   = 0x00fcfcfc,
0608         .mode_fifoctrl  = 0x2f2f2f2f,
0609         .mode_backlight = 0x00000000,
0610         .lcdclk     = 96,
0611         856, 856,
0612         480, 480,
0613     },
0614     [9] = {
0615         .name = "DB1300_800x480",
0616         .monspecs = {
0617             .modedb = NULL,
0618             .modedb_len = 0,
0619             .hfmin = 30000,
0620             .hfmax = 70000,
0621             .vfmin = 60,
0622             .vfmax = 60,
0623             .dclkmin = 6000000,
0624             .dclkmax = 28000000,
0625             .input = FB_DISP_RGB,
0626         },
0627         .mode_screen        = LCD_SCREEN_SX_N(800) |
0628                       LCD_SCREEN_SY_N(480),
0629         .mode_horztiming    = LCD_HORZTIMING_HPW_N(5) |
0630                       LCD_HORZTIMING_HND1_N(16) |
0631                       LCD_HORZTIMING_HND2_N(8),
0632         .mode_verttiming    = LCD_VERTTIMING_VPW_N(4) |
0633                       LCD_VERTTIMING_VND1_N(8) |
0634                       LCD_VERTTIMING_VND2_N(5),
0635         .mode_clkcontrol    = LCD_CLKCONTROL_PCD_N(1) |
0636                       LCD_CLKCONTROL_IV |
0637                       LCD_CLKCONTROL_IH,
0638         .mode_pwmdiv        = 0x00000000,
0639         .mode_pwmhi     = 0x00000000,
0640         .mode_outmask       = 0x00FFFFFF,
0641         .mode_fifoctrl      = 0x2f2f2f2f,
0642         .mode_backlight     = 0x00000000,
0643         .lcdclk         = 96,
0644         800, 800,
0645         480, 480,
0646     },
0647 };
0648 
0649 #define NUM_PANELS (ARRAY_SIZE(known_lcd_panels))
0650 
0651 /********************************************************************/
0652 
0653 static int winbpp (unsigned int winctrl1)
0654 {
0655     int bits = 0;
0656 
0657     /* how many bits are needed for each pixel format */
0658     switch (winctrl1 & LCD_WINCTRL1_FRM) {
0659     case LCD_WINCTRL1_FRM_1BPP:
0660         bits = 1;
0661         break;
0662     case LCD_WINCTRL1_FRM_2BPP:
0663         bits = 2;
0664         break;
0665     case LCD_WINCTRL1_FRM_4BPP:
0666         bits = 4;
0667         break;
0668     case LCD_WINCTRL1_FRM_8BPP:
0669         bits = 8;
0670         break;
0671     case LCD_WINCTRL1_FRM_12BPP:
0672     case LCD_WINCTRL1_FRM_16BPP655:
0673     case LCD_WINCTRL1_FRM_16BPP565:
0674     case LCD_WINCTRL1_FRM_16BPP556:
0675     case LCD_WINCTRL1_FRM_16BPPI1555:
0676     case LCD_WINCTRL1_FRM_16BPPI5551:
0677     case LCD_WINCTRL1_FRM_16BPPA1555:
0678     case LCD_WINCTRL1_FRM_16BPPA5551:
0679         bits = 16;
0680         break;
0681     case LCD_WINCTRL1_FRM_24BPP:
0682     case LCD_WINCTRL1_FRM_32BPP:
0683         bits = 32;
0684         break;
0685     }
0686 
0687     return bits;
0688 }
0689 
0690 static int fbinfo2index (struct fb_info *fb_info)
0691 {
0692     int i;
0693 
0694     for (i = 0; i < device_count; ++i) {
0695         if (fb_info == _au1200fb_infos[i])
0696             return i;
0697     }
0698     printk("au1200fb: ERROR: fbinfo2index failed!\n");
0699     return -1;
0700 }
0701 
0702 static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
0703     int xpos, int ypos)
0704 {
0705     uint32 winctrl0, winctrl1, winenable, fb_offset = 0;
0706     int xsz, ysz;
0707 
0708     /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */
0709 
0710     winctrl0 = lcd->window[plane].winctrl0;
0711     winctrl1 = lcd->window[plane].winctrl1;
0712     winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN);
0713     winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY);
0714 
0715     /* Check for off-screen adjustments */
0716     xsz = win->w[plane].xres;
0717     ysz = win->w[plane].yres;
0718     if ((xpos + win->w[plane].xres) > panel->Xres) {
0719         /* Off-screen to the right */
0720         xsz = panel->Xres - xpos; /* off by 1 ??? */
0721         /*printk("off screen right\n");*/
0722     }
0723 
0724     if ((ypos + win->w[plane].yres) > panel->Yres) {
0725         /* Off-screen to the bottom */
0726         ysz = panel->Yres - ypos; /* off by 1 ??? */
0727         /*printk("off screen bottom\n");*/
0728     }
0729 
0730     if (xpos < 0) {
0731         /* Off-screen to the left */
0732         xsz = win->w[plane].xres + xpos;
0733         fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);
0734         xpos = 0;
0735         /*printk("off screen left\n");*/
0736     }
0737 
0738     if (ypos < 0) {
0739         /* Off-screen to the top */
0740         ysz = win->w[plane].yres + ypos;
0741         /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */
0742         ypos = 0;
0743         /*printk("off screen top\n");*/
0744     }
0745 
0746     /* record settings */
0747     win->w[plane].xpos = xpos;
0748     win->w[plane].ypos = ypos;
0749 
0750     xsz -= 1;
0751     ysz -= 1;
0752     winctrl0 |= (xpos << 21);
0753     winctrl0 |= (ypos << 10);
0754     winctrl1 |= (xsz << 11);
0755     winctrl1 |= (ysz << 0);
0756 
0757     /* Disable the window while making changes, then restore WINEN */
0758     winenable = lcd->winenable & (1 << plane);
0759     wmb(); /* drain writebuffer */
0760     lcd->winenable &= ~(1 << plane);
0761     lcd->window[plane].winctrl0 = winctrl0;
0762     lcd->window[plane].winctrl1 = winctrl1;
0763     lcd->window[plane].winbuf0 =
0764     lcd->window[plane].winbuf1 = fbdev->fb_phys;
0765     lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
0766     lcd->winenable |= winenable;
0767     wmb(); /* drain writebuffer */
0768 
0769     return 0;
0770 }
0771 
0772 static void au1200_setpanel(struct panel_settings *newpanel,
0773                 struct au1200fb_platdata *pd)
0774 {
0775     /*
0776      * Perform global setup/init of LCD controller
0777      */
0778     uint32 winenable;
0779 
0780     /* Make sure all windows disabled */
0781     winenable = lcd->winenable;
0782     lcd->winenable = 0;
0783     wmb(); /* drain writebuffer */
0784     /*
0785      * Ensure everything is disabled before reconfiguring
0786      */
0787     if (lcd->screen & LCD_SCREEN_SEN) {
0788         /* Wait for vertical sync period */
0789         lcd->intstatus = LCD_INT_SS;
0790         while ((lcd->intstatus & LCD_INT_SS) == 0)
0791             ;
0792 
0793         lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/
0794 
0795         do {
0796             lcd->intstatus = lcd->intstatus; /*clear interrupts*/
0797             wmb(); /* drain writebuffer */
0798         /*wait for controller to shut down*/
0799         } while ((lcd->intstatus & LCD_INT_SD) == 0);
0800 
0801         /* Call shutdown of current panel (if up) */
0802         /* this must occur last, because if an external clock is driving
0803             the controller, the clock cannot be turned off before first
0804             shutting down the controller.
0805          */
0806         if (pd->panel_shutdown)
0807             pd->panel_shutdown();
0808     }
0809 
0810     /* Newpanel == NULL indicates a shutdown operation only */
0811     if (newpanel == NULL)
0812         return;
0813 
0814     panel = newpanel;
0815 
0816     printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres);
0817 
0818     /*
0819      * Setup clocking if internal LCD clock source (assumes sys_auxpll valid)
0820      */
0821     if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
0822     {
0823         struct clk *c = clk_get(NULL, "lcd_intclk");
0824         long r, pc = panel->lcdclk * 1000000;
0825 
0826         if (!IS_ERR(c)) {
0827             r = clk_round_rate(c, pc);
0828             if ((pc - r) < (pc / 10)) { /* 10% slack */
0829                 clk_set_rate(c, r);
0830                 clk_prepare_enable(c);
0831             }
0832             clk_put(c);
0833         }
0834     }
0835 
0836     /*
0837      * Configure panel timings
0838      */
0839     lcd->screen = panel->mode_screen;
0840     lcd->horztiming = panel->mode_horztiming;
0841     lcd->verttiming = panel->mode_verttiming;
0842     lcd->clkcontrol = panel->mode_clkcontrol;
0843     lcd->pwmdiv = panel->mode_pwmdiv;
0844     lcd->pwmhi = panel->mode_pwmhi;
0845     lcd->outmask = panel->mode_outmask;
0846     lcd->fifoctrl = panel->mode_fifoctrl;
0847     wmb(); /* drain writebuffer */
0848 
0849     /* fixme: Check window settings to make sure still valid
0850      * for new geometry */
0851 #if 0
0852     au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos);
0853     au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos);
0854     au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos);
0855     au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos);
0856 #endif
0857     lcd->winenable = winenable;
0858 
0859     /*
0860      * Re-enable screen now that it is configured
0861      */
0862     lcd->screen |= LCD_SCREEN_SEN;
0863     wmb(); /* drain writebuffer */
0864 
0865     /* Call init of panel */
0866     if (pd->panel_init)
0867         pd->panel_init();
0868 
0869     /* FIX!!!! not appropriate on panel change!!! Global setup/init */
0870     lcd->intenable = 0;
0871     lcd->intstatus = ~0;
0872     lcd->backcolor = win->mode_backcolor;
0873 
0874     /* Setup Color Key - FIX!!! */
0875     lcd->colorkey = win->mode_colorkey;
0876     lcd->colorkeymsk = win->mode_colorkeymsk;
0877 
0878     /* Setup HWCursor - FIX!!! Need to support this eventually */
0879     lcd->hwc.cursorctrl = 0;
0880     lcd->hwc.cursorpos = 0;
0881     lcd->hwc.cursorcolor0 = 0;
0882     lcd->hwc.cursorcolor1 = 0;
0883     lcd->hwc.cursorcolor2 = 0;
0884     lcd->hwc.cursorcolor3 = 0;
0885 
0886 
0887 #if 0
0888 #define D(X) printk("%25s: %08X\n", #X, X)
0889     D(lcd->screen);
0890     D(lcd->horztiming);
0891     D(lcd->verttiming);
0892     D(lcd->clkcontrol);
0893     D(lcd->pwmdiv);
0894     D(lcd->pwmhi);
0895     D(lcd->outmask);
0896     D(lcd->fifoctrl);
0897     D(lcd->window[0].winctrl0);
0898     D(lcd->window[0].winctrl1);
0899     D(lcd->window[0].winctrl2);
0900     D(lcd->window[0].winbuf0);
0901     D(lcd->window[0].winbuf1);
0902     D(lcd->window[0].winbufctrl);
0903     D(lcd->window[1].winctrl0);
0904     D(lcd->window[1].winctrl1);
0905     D(lcd->window[1].winctrl2);
0906     D(lcd->window[1].winbuf0);
0907     D(lcd->window[1].winbuf1);
0908     D(lcd->window[1].winbufctrl);
0909     D(lcd->window[2].winctrl0);
0910     D(lcd->window[2].winctrl1);
0911     D(lcd->window[2].winctrl2);
0912     D(lcd->window[2].winbuf0);
0913     D(lcd->window[2].winbuf1);
0914     D(lcd->window[2].winbufctrl);
0915     D(lcd->window[3].winctrl0);
0916     D(lcd->window[3].winctrl1);
0917     D(lcd->window[3].winctrl2);
0918     D(lcd->window[3].winbuf0);
0919     D(lcd->window[3].winbuf1);
0920     D(lcd->window[3].winbufctrl);
0921     D(lcd->winenable);
0922     D(lcd->intenable);
0923     D(lcd->intstatus);
0924     D(lcd->backcolor);
0925     D(lcd->winenable);
0926     D(lcd->colorkey);
0927     D(lcd->colorkeymsk);
0928     D(lcd->hwc.cursorctrl);
0929     D(lcd->hwc.cursorpos);
0930     D(lcd->hwc.cursorcolor0);
0931     D(lcd->hwc.cursorcolor1);
0932     D(lcd->hwc.cursorcolor2);
0933     D(lcd->hwc.cursorcolor3);
0934 #endif
0935 }
0936 
0937 static void au1200_setmode(struct au1200fb_device *fbdev)
0938 {
0939     int plane = fbdev->plane;
0940     /* Window/plane setup */
0941     lcd->window[plane].winctrl1 = ( 0
0942         | LCD_WINCTRL1_PRI_N(plane)
0943         | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */
0944         ) ;
0945 
0946     au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos);
0947 
0948     lcd->window[plane].winctrl2 = ( 0
0949         | LCD_WINCTRL2_CKMODE_00
0950         | LCD_WINCTRL2_DBM
0951         | LCD_WINCTRL2_BX_N(fbdev->fb_info->fix.line_length)
0952         | LCD_WINCTRL2_SCX_1
0953         | LCD_WINCTRL2_SCY_1
0954         ) ;
0955     lcd->winenable |= win->w[plane].mode_winenable;
0956     wmb(); /* drain writebuffer */
0957 }
0958 
0959 
0960 /* Inline helpers */
0961 
0962 /*#define panel_is_dual(panel)  ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
0963 /*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
0964 
0965 #define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN)
0966 
0967 /* Bitfields format supported by the controller. */
0968 static struct fb_bitfield rgb_bitfields[][4] = {
0969     /*     Red,        Green,    Blue,       Transp   */
0970     [LCD_WINCTRL1_FRM_16BPP655 >> 25] =
0971         { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
0972 
0973     [LCD_WINCTRL1_FRM_16BPP565 >> 25] =
0974         { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
0975 
0976     [LCD_WINCTRL1_FRM_16BPP556 >> 25] =
0977         { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } },
0978 
0979     [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] =
0980         { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
0981 
0982     [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] =
0983         { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } },
0984 
0985     [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] =
0986         { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } },
0987 
0988     [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] =
0989         { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } },
0990 
0991     [LCD_WINCTRL1_FRM_24BPP >> 25] =
0992         { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } },
0993 
0994     [LCD_WINCTRL1_FRM_32BPP >> 25] =
0995         { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } },
0996 };
0997 
0998 /*-------------------------------------------------------------------------*/
0999 
1000 /* Helpers */
1001 
1002 static void au1200fb_update_fbinfo(struct fb_info *fbi)
1003 {
1004     /* FIX!!!! This also needs to take the window pixel format into account!!! */
1005 
1006     /* Update var-dependent FB info */
1007     if (panel_is_color(panel)) {
1008         if (fbi->var.bits_per_pixel <= 8) {
1009             /* palettized */
1010             fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1011             fbi->fix.line_length = fbi->var.xres_virtual /
1012                 (8/fbi->var.bits_per_pixel);
1013         } else {
1014             /* non-palettized */
1015             fbi->fix.visual = FB_VISUAL_TRUECOLOR;
1016             fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8);
1017         }
1018     } else {
1019         /* mono FIX!!! mono 8 and 4 bits */
1020         fbi->fix.visual = FB_VISUAL_MONO10;
1021         fbi->fix.line_length = fbi->var.xres_virtual / 8;
1022     }
1023 
1024     fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual;
1025     print_dbg("line length: %d\n", fbi->fix.line_length);
1026     print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel);
1027 }
1028 
1029 /*-------------------------------------------------------------------------*/
1030 
1031 /* AU1200 framebuffer driver */
1032 
1033 /* fb_check_var
1034  * Validate var settings with hardware restrictions and modify it if necessary
1035  */
1036 static int au1200fb_fb_check_var(struct fb_var_screeninfo *var,
1037     struct fb_info *fbi)
1038 {
1039     struct au1200fb_device *fbdev = fbi->par;
1040     u32 pixclock;
1041     int screen_size, plane;
1042 
1043     plane = fbdev->plane;
1044 
1045     /* Make sure that the mode respect all LCD controller and
1046      * panel restrictions. */
1047     var->xres = win->w[plane].xres;
1048     var->yres = win->w[plane].yres;
1049 
1050     /* No need for virtual resolution support */
1051     var->xres_virtual = var->xres;
1052     var->yres_virtual = var->yres;
1053 
1054     var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1);
1055 
1056     screen_size = var->xres_virtual * var->yres_virtual;
1057     if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8);
1058     else screen_size /= (8/var->bits_per_pixel);
1059 
1060     if (fbdev->fb_len < screen_size)
1061         return -EINVAL; /* Virtual screen is to big, abort */
1062 
1063     /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */
1064     /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel
1065      * clock can only be obtain by dividing this value by an even integer.
1066      * Fallback to a slower pixel clock if necessary. */
1067     pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin);
1068     pixclock = min3(pixclock, fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2);
1069 
1070     if (AU1200_LCD_MAX_CLK % pixclock) {
1071         int diff = AU1200_LCD_MAX_CLK % pixclock;
1072         pixclock -= diff;
1073     }
1074 
1075     var->pixclock = KHZ2PICOS(pixclock/1000);
1076 #if 0
1077     if (!panel_is_active(panel)) {
1078         int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1;
1079 
1080         if (!panel_is_color(panel)
1081             && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) {
1082             /* STN 8bit mono panel support is up to 6MHz pixclock */
1083             var->pixclock = KHZ2PICOS(6000);
1084         } else if (!pcd) {
1085             /* Other STN panel support is up to 12MHz  */
1086             var->pixclock = KHZ2PICOS(12000);
1087         }
1088     }
1089 #endif
1090     /* Set bitfield accordingly */
1091     switch (var->bits_per_pixel) {
1092         case 16:
1093         {
1094             /* 16bpp True color.
1095              * These must be set to MATCH WINCTRL[FORM] */
1096             int idx;
1097             idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1098             var->red    = rgb_bitfields[idx][0];
1099             var->green  = rgb_bitfields[idx][1];
1100             var->blue   = rgb_bitfields[idx][2];
1101             var->transp = rgb_bitfields[idx][3];
1102             break;
1103         }
1104 
1105         case 32:
1106         {
1107             /* 32bpp True color.
1108              * These must be set to MATCH WINCTRL[FORM] */
1109             int idx;
1110             idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1111             var->red    = rgb_bitfields[idx][0];
1112             var->green  = rgb_bitfields[idx][1];
1113             var->blue   = rgb_bitfields[idx][2];
1114             var->transp = rgb_bitfields[idx][3];
1115             break;
1116         }
1117         default:
1118             print_dbg("Unsupported depth %dbpp", var->bits_per_pixel);
1119             return -EINVAL;
1120     }
1121 
1122     return 0;
1123 }
1124 
1125 /* fb_set_par
1126  * Set hardware with var settings. This will enable the controller with a
1127  * specific mode, normally validated with the fb_check_var method
1128  */
1129 static int au1200fb_fb_set_par(struct fb_info *fbi)
1130 {
1131     struct au1200fb_device *fbdev = fbi->par;
1132 
1133     au1200fb_update_fbinfo(fbi);
1134     au1200_setmode(fbdev);
1135 
1136     return 0;
1137 }
1138 
1139 /* fb_setcolreg
1140  * Set color in LCD palette.
1141  */
1142 static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
1143     unsigned blue, unsigned transp, struct fb_info *fbi)
1144 {
1145     volatile u32 *palette = lcd->palette;
1146     u32 value;
1147 
1148     if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1))
1149         return -EINVAL;
1150 
1151     if (fbi->var.grayscale) {
1152         /* Convert color to grayscale */
1153         red = green = blue =
1154             (19595 * red + 38470 * green + 7471 * blue) >> 16;
1155     }
1156 
1157     if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) {
1158         /* Place color in the pseudopalette */
1159         if (regno > 16)
1160             return -EINVAL;
1161 
1162         palette = (u32*) fbi->pseudo_palette;
1163 
1164         red   >>= (16 - fbi->var.red.length);
1165         green >>= (16 - fbi->var.green.length);
1166         blue  >>= (16 - fbi->var.blue.length);
1167 
1168         value = (red   << fbi->var.red.offset)  |
1169             (green << fbi->var.green.offset)|
1170             (blue  << fbi->var.blue.offset);
1171         value &= 0xFFFF;
1172 
1173     } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) {
1174         /* COLOR TFT PALLETTIZED (use RGB 565) */
1175         value = (red & 0xF800)|((green >> 5) &
1176                 0x07E0)|((blue >> 11) & 0x001F);
1177         value &= 0xFFFF;
1178 
1179     } else if (0 /*panel_is_color(fbdev->panel)*/) {
1180         /* COLOR STN MODE */
1181         value = 0x1234;
1182         value &= 0xFFF;
1183     } else {
1184         /* MONOCHROME MODE */
1185         value = (green >> 12) & 0x000F;
1186         value &= 0xF;
1187     }
1188 
1189     palette[regno] = value;
1190 
1191     return 0;
1192 }
1193 
1194 /* fb_blank
1195  * Blank the screen. Depending on the mode, the screen will be
1196  * activated with the backlight color, or desactivated
1197  */
1198 static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi)
1199 {
1200     struct au1200fb_device *fbdev = fbi->par;
1201 
1202     /* Short-circuit screen blanking */
1203     if (noblanking)
1204         return 0;
1205 
1206     switch (blank_mode) {
1207 
1208     case FB_BLANK_UNBLANK:
1209     case FB_BLANK_NORMAL:
1210         /* printk("turn on panel\n"); */
1211         au1200_setpanel(panel, fbdev->pd);
1212         break;
1213     case FB_BLANK_VSYNC_SUSPEND:
1214     case FB_BLANK_HSYNC_SUSPEND:
1215     case FB_BLANK_POWERDOWN:
1216         /* printk("turn off panel\n"); */
1217         au1200_setpanel(NULL, fbdev->pd);
1218         break;
1219     default:
1220         break;
1221 
1222     }
1223 
1224     /* FB_BLANK_NORMAL is a soft blank */
1225     return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0;
1226 }
1227 
1228 /* fb_mmap
1229  * Map video memory in user space. We don't use the generic fb_mmap
1230  * method mainly to allow the use of the TLB streaming flag (CCA=6)
1231  */
1232 static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1233 {
1234     struct au1200fb_device *fbdev = info->par;
1235 
1236     return dma_mmap_coherent(fbdev->dev, vma,
1237                  fbdev->fb_mem, fbdev->fb_phys, fbdev->fb_len);
1238 }
1239 
1240 static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
1241 {
1242 
1243     unsigned int hi1, divider;
1244 
1245     /* SCREEN_SIZE: user cannot reset size, must switch panel choice */
1246 
1247     if (pdata->flags & SCREEN_BACKCOLOR)
1248         lcd->backcolor = pdata->backcolor;
1249 
1250     if (pdata->flags & SCREEN_BRIGHTNESS) {
1251 
1252         // limit brightness pwm duty to >= 30/1600
1253         if (pdata->brightness < 30) {
1254             pdata->brightness = 30;
1255         }
1256         divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1257         hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8);
1258         lcd->pwmhi &= 0xFFFF;
1259         lcd->pwmhi |= (hi1 << 16);
1260     }
1261 
1262     if (pdata->flags & SCREEN_COLORKEY)
1263         lcd->colorkey = pdata->colorkey;
1264 
1265     if (pdata->flags & SCREEN_MASK)
1266         lcd->colorkeymsk = pdata->mask;
1267     wmb(); /* drain writebuffer */
1268 }
1269 
1270 static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
1271 {
1272     unsigned int hi1, divider;
1273 
1274     pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1;
1275     pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1;
1276 
1277     pdata->backcolor = lcd->backcolor;
1278     pdata->colorkey = lcd->colorkey;
1279     pdata->mask = lcd->colorkeymsk;
1280 
1281     // brightness
1282     hi1 = (lcd->pwmhi >> 16) + 1;
1283     divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1284     pdata->brightness = ((hi1 << 8) / divider) - 1;
1285     wmb(); /* drain writebuffer */
1286 }
1287 
1288 static void set_window(unsigned int plane,
1289     struct au1200_lcd_window_regs_t *pdata)
1290 {
1291     unsigned int val, bpp;
1292 
1293     /* Window control register 0 */
1294     if (pdata->flags & WIN_POSITION) {
1295         val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX |
1296                 LCD_WINCTRL0_OY);
1297         val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX);
1298         val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY);
1299         lcd->window[plane].winctrl0 = val;
1300     }
1301     if (pdata->flags & WIN_ALPHA_COLOR) {
1302         val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A);
1303         val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A);
1304         lcd->window[plane].winctrl0 = val;
1305     }
1306     if (pdata->flags & WIN_ALPHA_MODE) {
1307         val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN);
1308         val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN);
1309         lcd->window[plane].winctrl0 = val;
1310     }
1311 
1312     /* Window control register 1 */
1313     if (pdata->flags & WIN_PRIORITY) {
1314         val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI);
1315         val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI);
1316         lcd->window[plane].winctrl1 = val;
1317     }
1318     if (pdata->flags & WIN_CHANNEL) {
1319         val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE);
1320         val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE);
1321         lcd->window[plane].winctrl1 = val;
1322     }
1323     if (pdata->flags & WIN_BUFFER_FORMAT) {
1324         val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM);
1325         val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM);
1326         lcd->window[plane].winctrl1 = val;
1327     }
1328     if (pdata->flags & WIN_COLOR_ORDER) {
1329         val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO);
1330         val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO);
1331         lcd->window[plane].winctrl1 = val;
1332     }
1333     if (pdata->flags & WIN_PIXEL_ORDER) {
1334         val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO);
1335         val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO);
1336         lcd->window[plane].winctrl1 = val;
1337     }
1338     if (pdata->flags & WIN_SIZE) {
1339         val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX |
1340                 LCD_WINCTRL1_SZY);
1341         val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX);
1342         val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY);
1343         lcd->window[plane].winctrl1 = val;
1344         /* program buffer line width */
1345         bpp = winbpp(val) / 8;
1346         val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX);
1347         val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX);
1348         lcd->window[plane].winctrl2 = val;
1349     }
1350 
1351     /* Window control register 2 */
1352     if (pdata->flags & WIN_COLORKEY_MODE) {
1353         val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE);
1354         val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE);
1355         lcd->window[plane].winctrl2 = val;
1356     }
1357     if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) {
1358         val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM);
1359         val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM);
1360         lcd->window[plane].winctrl2 = val;
1361     }
1362     if (pdata->flags & WIN_RAM_ARRAY_MODE) {
1363         val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM);
1364         val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM);
1365         lcd->window[plane].winctrl2 = val;
1366     }
1367 
1368     /* Buffer line width programmed with WIN_SIZE */
1369 
1370     if (pdata->flags & WIN_BUFFER_SCALE) {
1371         val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX |
1372                 LCD_WINCTRL2_SCY);
1373         val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX);
1374         val |= ((pdata->ysize) & LCD_WINCTRL2_SCY);
1375         lcd->window[plane].winctrl2 = val;
1376     }
1377 
1378     if (pdata->flags & WIN_ENABLE) {
1379         val = lcd->winenable;
1380         val &= ~(1<<plane);
1381         val |= (pdata->enable & 1) << plane;
1382         lcd->winenable = val;
1383     }
1384     wmb(); /* drain writebuffer */
1385 }
1386 
1387 static void get_window(unsigned int plane,
1388     struct au1200_lcd_window_regs_t *pdata)
1389 {
1390     /* Window control register 0 */
1391     pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21;
1392     pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10;
1393     pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2;
1394     pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1;
1395 
1396     /* Window control register 1 */
1397     pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30;
1398     pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29;
1399     pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1400     pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24;
1401     pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22;
1402     pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1;
1403     pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1;
1404 
1405     /* Window control register 2 */
1406     pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24;
1407     pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23;
1408     pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;
1409 
1410     pdata->enable = (lcd->winenable >> plane) & 1;
1411     wmb(); /* drain writebuffer */
1412 }
1413 
1414 static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
1415                           unsigned long arg)
1416 {
1417     struct au1200fb_device *fbdev = info->par;
1418     int plane;
1419     int val;
1420 
1421     plane = fbinfo2index(info);
1422     print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane);
1423 
1424     if (cmd == AU1200_LCD_FB_IOCTL) {
1425         struct au1200_lcd_iodata_t iodata;
1426 
1427         if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata)))
1428             return -EFAULT;
1429 
1430         print_dbg("FB IOCTL called\n");
1431 
1432         switch (iodata.subcmd) {
1433         case AU1200_LCD_SET_SCREEN:
1434             print_dbg("AU1200_LCD_SET_SCREEN\n");
1435             set_global(cmd, &iodata.global);
1436             break;
1437 
1438         case AU1200_LCD_GET_SCREEN:
1439             print_dbg("AU1200_LCD_GET_SCREEN\n");
1440             get_global(cmd, &iodata.global);
1441             break;
1442 
1443         case AU1200_LCD_SET_WINDOW:
1444             print_dbg("AU1200_LCD_SET_WINDOW\n");
1445             set_window(plane, &iodata.window);
1446             break;
1447 
1448         case AU1200_LCD_GET_WINDOW:
1449             print_dbg("AU1200_LCD_GET_WINDOW\n");
1450             get_window(plane, &iodata.window);
1451             break;
1452 
1453         case AU1200_LCD_SET_PANEL:
1454             print_dbg("AU1200_LCD_SET_PANEL\n");
1455             if ((iodata.global.panel_choice >= 0) &&
1456                     (iodata.global.panel_choice <
1457                      NUM_PANELS))
1458             {
1459                 struct panel_settings *newpanel;
1460                 panel_index = iodata.global.panel_choice;
1461                 newpanel = &known_lcd_panels[panel_index];
1462                 au1200_setpanel(newpanel, fbdev->pd);
1463             }
1464             break;
1465 
1466         case AU1200_LCD_GET_PANEL:
1467             print_dbg("AU1200_LCD_GET_PANEL\n");
1468             iodata.global.panel_choice = panel_index;
1469             break;
1470 
1471         default:
1472             return -EINVAL;
1473         }
1474 
1475         val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata));
1476         if (val) {
1477             print_dbg("error: could not copy %d bytes\n", val);
1478             return -EFAULT;
1479         }
1480     }
1481 
1482     return 0;
1483 }
1484 
1485 
1486 static const struct fb_ops au1200fb_fb_ops = {
1487     .owner      = THIS_MODULE,
1488     .fb_check_var   = au1200fb_fb_check_var,
1489     .fb_set_par = au1200fb_fb_set_par,
1490     .fb_setcolreg   = au1200fb_fb_setcolreg,
1491     .fb_blank   = au1200fb_fb_blank,
1492     .fb_fillrect    = sys_fillrect,
1493     .fb_copyarea    = sys_copyarea,
1494     .fb_imageblit   = sys_imageblit,
1495     .fb_read    = fb_sys_read,
1496     .fb_write   = fb_sys_write,
1497     .fb_sync    = NULL,
1498     .fb_ioctl   = au1200fb_ioctl,
1499     .fb_mmap    = au1200fb_fb_mmap,
1500 };
1501 
1502 /*-------------------------------------------------------------------------*/
1503 
1504 static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id)
1505 {
1506     /* Nothing to do for now, just clear any pending interrupt */
1507     lcd->intstatus = lcd->intstatus;
1508     wmb(); /* drain writebuffer */
1509 
1510     return IRQ_HANDLED;
1511 }
1512 
1513 /*-------------------------------------------------------------------------*/
1514 
1515 /* AU1200 LCD device probe helpers */
1516 
1517 static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
1518 {
1519     struct fb_info *fbi = fbdev->fb_info;
1520     int bpp, ret;
1521 
1522     fbi->fbops = &au1200fb_fb_ops;
1523 
1524     bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);
1525 
1526     /* Copy monitor specs from panel data */
1527     /* fixme: we're setting up LCD controller windows, so these dont give a
1528     damn as to what the monitor specs are (the panel itself does, but that
1529     isn't done here...so maybe need a generic catchall monitor setting??? */
1530     memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs));
1531 
1532     /* We first try the user mode passed in argument. If that failed,
1533      * or if no one has been specified, we default to the first mode of the
1534      * panel list. Note that after this call, var data will be set */
1535     if (!fb_find_mode(&fbi->var,
1536               fbi,
1537               NULL, /* drv_info.opt_mode, */
1538               fbi->monspecs.modedb,
1539               fbi->monspecs.modedb_len,
1540               fbi->monspecs.modedb,
1541               bpp)) {
1542 
1543         print_err("Cannot find valid mode for panel %s", panel->name);
1544         return -EFAULT;
1545     }
1546 
1547     fbi->pseudo_palette = kcalloc(16, sizeof(u32), GFP_KERNEL);
1548     if (!fbi->pseudo_palette)
1549         return -ENOMEM;
1550 
1551     ret = fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0);
1552     if (ret < 0) {
1553         print_err("Fail to allocate colormap (%d entries)",
1554               AU1200_LCD_NBR_PALETTE_ENTRIES);
1555         return ret;
1556     }
1557 
1558     strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id));
1559     fbi->fix.smem_start = fbdev->fb_phys;
1560     fbi->fix.smem_len = fbdev->fb_len;
1561     fbi->fix.type = FB_TYPE_PACKED_PIXELS;
1562     fbi->fix.xpanstep = 0;
1563     fbi->fix.ypanstep = 0;
1564     fbi->fix.mmio_start = 0;
1565     fbi->fix.mmio_len = 0;
1566     fbi->fix.accel = FB_ACCEL_NONE;
1567 
1568     fbi->screen_base = (char __iomem *) fbdev->fb_mem;
1569 
1570     au1200fb_update_fbinfo(fbi);
1571 
1572     return 0;
1573 }
1574 
1575 /*-------------------------------------------------------------------------*/
1576 
1577 
1578 static int au1200fb_setup(struct au1200fb_platdata *pd)
1579 {
1580     char *options = NULL;
1581     char *this_opt, *endptr;
1582     int num_panels = ARRAY_SIZE(known_lcd_panels);
1583     int panel_idx = -1;
1584 
1585     fb_get_options(DRIVER_NAME, &options);
1586 
1587     if (!options)
1588         goto out;
1589 
1590     while ((this_opt = strsep(&options, ",")) != NULL) {
1591         /* Panel option - can be panel name,
1592          * "bs" for board-switch, or number/index */
1593         if (!strncmp(this_opt, "panel:", 6)) {
1594             int i;
1595             long int li;
1596             char *endptr;
1597             this_opt += 6;
1598             /* First check for index, which allows
1599              * to short circuit this mess */
1600             li = simple_strtol(this_opt, &endptr, 0);
1601             if (*endptr == '\0')
1602                 panel_idx = (int)li;
1603             else if (strcmp(this_opt, "bs") == 0)
1604                 panel_idx = pd->panel_index();
1605             else {
1606                 for (i = 0; i < num_panels; i++) {
1607                     if (!strcmp(this_opt,
1608                             known_lcd_panels[i].name)) {
1609                         panel_idx = i;
1610                         break;
1611                     }
1612                 }
1613             }
1614             if ((panel_idx < 0) || (panel_idx >= num_panels))
1615                 print_warn("Panel %s not supported!", this_opt);
1616             else
1617                 panel_index = panel_idx;
1618 
1619         } else if (strncmp(this_opt, "nohwcursor", 10) == 0)
1620             nohwcursor = 1;
1621         else if (strncmp(this_opt, "devices:", 8) == 0) {
1622             this_opt += 8;
1623             device_count = simple_strtol(this_opt, &endptr, 0);
1624             if ((device_count < 0) ||
1625                 (device_count > MAX_DEVICE_COUNT))
1626                 device_count = MAX_DEVICE_COUNT;
1627         } else if (strncmp(this_opt, "wincfg:", 7) == 0) {
1628             this_opt += 7;
1629             window_index = simple_strtol(this_opt, &endptr, 0);
1630             if ((window_index < 0) ||
1631                 (window_index >= ARRAY_SIZE(windows)))
1632                 window_index = DEFAULT_WINDOW_INDEX;
1633         } else if (strncmp(this_opt, "off", 3) == 0)
1634             return 1;
1635         else
1636             print_warn("Unsupported option \"%s\"", this_opt);
1637     }
1638 
1639 out:
1640     return 0;
1641 }
1642 
1643 /* AU1200 LCD controller device driver */
1644 static int au1200fb_drv_probe(struct platform_device *dev)
1645 {
1646     struct au1200fb_device *fbdev;
1647     struct au1200fb_platdata *pd;
1648     struct fb_info *fbi = NULL;
1649     int bpp, plane, ret, irq;
1650 
1651     print_info("" DRIVER_DESC "");
1652 
1653     pd = dev->dev.platform_data;
1654     if (!pd)
1655         return -ENODEV;
1656 
1657     /* Setup driver with options */
1658     if (au1200fb_setup(pd))
1659         return -ENODEV;
1660 
1661     /* Point to the panel selected */
1662     panel = &known_lcd_panels[panel_index];
1663     win = &windows[window_index];
1664 
1665     printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name);
1666     printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name);
1667 
1668     for (plane = 0; plane < device_count; ++plane) {
1669         bpp = winbpp(win->w[plane].mode_winctrl1);
1670         if (win->w[plane].xres == 0)
1671             win->w[plane].xres = panel->Xres;
1672         if (win->w[plane].yres == 0)
1673             win->w[plane].yres = panel->Yres;
1674 
1675         fbi = framebuffer_alloc(sizeof(struct au1200fb_device),
1676                     &dev->dev);
1677         if (!fbi) {
1678             ret = -ENOMEM;
1679             goto failed;
1680         }
1681 
1682         _au1200fb_infos[plane] = fbi;
1683         fbdev = fbi->par;
1684         fbdev->fb_info = fbi;
1685         fbdev->pd = pd;
1686         fbdev->dev = &dev->dev;
1687 
1688         fbdev->plane = plane;
1689 
1690         /* Allocate the framebuffer to the maximum screen size */
1691         fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8;
1692 
1693         fbdev->fb_mem = dmam_alloc_attrs(&dev->dev,
1694                 PAGE_ALIGN(fbdev->fb_len),
1695                 &fbdev->fb_phys, GFP_KERNEL, 0);
1696         if (!fbdev->fb_mem) {
1697             print_err("fail to allocate framebuffer (size: %dK))",
1698                   fbdev->fb_len / 1024);
1699             ret = -ENOMEM;
1700             goto failed;
1701         }
1702 
1703         print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
1704         print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
1705 
1706         /* Init FB data */
1707         ret = au1200fb_init_fbinfo(fbdev);
1708         if (ret < 0)
1709             goto failed;
1710 
1711         /* Register new framebuffer */
1712         ret = register_framebuffer(fbi);
1713         if (ret < 0) {
1714             print_err("cannot register new framebuffer");
1715             goto failed;
1716         }
1717 
1718         au1200fb_fb_set_par(fbi);
1719 
1720 #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
1721         if (plane == 0)
1722             if (fb_prepare_logo(fbi, FB_ROTATE_UR)) {
1723                 /* Start display and show logo on boot */
1724                 fb_set_cmap(&fbi->cmap, fbi);
1725                 fb_show_logo(fbi, FB_ROTATE_UR);
1726             }
1727 #endif
1728     }
1729 
1730     /* Now hook interrupt too */
1731     irq = platform_get_irq(dev, 0);
1732     ret = request_irq(irq, au1200fb_handle_irq,
1733               IRQF_SHARED, "lcd", (void *)dev);
1734     if (ret) {
1735         print_err("fail to request interrupt line %d (err: %d)",
1736               irq, ret);
1737         goto failed;
1738     }
1739 
1740     platform_set_drvdata(dev, pd);
1741 
1742     /* Kickstart the panel */
1743     au1200_setpanel(panel, pd);
1744 
1745     return 0;
1746 
1747 failed:
1748     for (plane = 0; plane < device_count; ++plane) {
1749         fbi = _au1200fb_infos[plane];
1750         if (!fbi)
1751             break;
1752 
1753         /* Clean up all probe data */
1754         unregister_framebuffer(fbi);
1755         if (fbi->cmap.len != 0)
1756             fb_dealloc_cmap(&fbi->cmap);
1757         kfree(fbi->pseudo_palette);
1758 
1759         framebuffer_release(fbi);
1760         _au1200fb_infos[plane] = NULL;
1761     }
1762     return ret;
1763 }
1764 
1765 static int au1200fb_drv_remove(struct platform_device *dev)
1766 {
1767     struct au1200fb_platdata *pd = platform_get_drvdata(dev);
1768     struct fb_info *fbi;
1769     int plane;
1770 
1771     /* Turn off the panel */
1772     au1200_setpanel(NULL, pd);
1773 
1774     for (plane = 0; plane < device_count; ++plane)  {
1775         fbi = _au1200fb_infos[plane];
1776 
1777         /* Clean up all probe data */
1778         unregister_framebuffer(fbi);
1779         if (fbi->cmap.len != 0)
1780             fb_dealloc_cmap(&fbi->cmap);
1781         kfree(fbi->pseudo_palette);
1782 
1783         framebuffer_release(fbi);
1784         _au1200fb_infos[plane] = NULL;
1785     }
1786 
1787     free_irq(platform_get_irq(dev, 0), (void *)dev);
1788 
1789     return 0;
1790 }
1791 
1792 #ifdef CONFIG_PM
1793 static int au1200fb_drv_suspend(struct device *dev)
1794 {
1795     struct au1200fb_platdata *pd = dev_get_drvdata(dev);
1796     au1200_setpanel(NULL, pd);
1797 
1798     lcd->outmask = 0;
1799     wmb(); /* drain writebuffer */
1800 
1801     return 0;
1802 }
1803 
1804 static int au1200fb_drv_resume(struct device *dev)
1805 {
1806     struct au1200fb_platdata *pd = dev_get_drvdata(dev);
1807     struct fb_info *fbi;
1808     int i;
1809 
1810     /* Kickstart the panel */
1811     au1200_setpanel(panel, pd);
1812 
1813     for (i = 0; i < device_count; i++) {
1814         fbi = _au1200fb_infos[i];
1815         au1200fb_fb_set_par(fbi);
1816     }
1817 
1818     return 0;
1819 }
1820 
1821 static const struct dev_pm_ops au1200fb_pmops = {
1822     .suspend    = au1200fb_drv_suspend,
1823     .resume     = au1200fb_drv_resume,
1824     .freeze     = au1200fb_drv_suspend,
1825     .thaw       = au1200fb_drv_resume,
1826 };
1827 
1828 #define AU1200FB_PMOPS  (&au1200fb_pmops)
1829 
1830 #else
1831 #define AU1200FB_PMOPS  NULL
1832 #endif /* CONFIG_PM */
1833 
1834 static struct platform_driver au1200fb_driver = {
1835     .driver = {
1836         .name   = "au1200-lcd",
1837         .pm = AU1200FB_PMOPS,
1838     },
1839     .probe      = au1200fb_drv_probe,
1840     .remove     = au1200fb_drv_remove,
1841 };
1842 module_platform_driver(au1200fb_driver);
1843 
1844 MODULE_DESCRIPTION(DRIVER_DESC);
1845 MODULE_LICENSE("GPL");
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