linux/include/video/w100fb.h
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   1/*
   2 *  Support for the w100 frame buffer.
   3 *
   4 *  Copyright (c) 2004-2005 Richard Purdie
   5 *  Copyright (c) 2005 Ian Molton
   6 *
   7 *  This program is free software; you can redistribute it and/or modify
   8 *  it under the terms of the GNU General Public License version 2 as
   9 *  published by the Free Software Foundation.
  10 */
  11
  12#define W100_GPIO_PORT_A        0
  13#define W100_GPIO_PORT_B        1
  14
  15#define CLK_SRC_XTAL  0
  16#define CLK_SRC_PLL   1
  17
  18struct w100fb_par;
  19
  20unsigned long w100fb_gpio_read(int port);
  21void w100fb_gpio_write(int port, unsigned long value);
  22unsigned long w100fb_get_hsynclen(struct device *dev);
  23
  24/* LCD Specific Routines and Config */
  25struct w100_tg_info {
  26        void (*change)(struct w100fb_par*);
  27        void (*suspend)(struct w100fb_par*);
  28        void (*resume)(struct w100fb_par*);
  29};
  30
  31/* General Platform Specific w100 Register Values */
  32struct w100_gen_regs {
  33        unsigned long lcd_format;
  34        unsigned long lcdd_cntl1;
  35        unsigned long lcdd_cntl2;
  36        unsigned long genlcd_cntl1;
  37        unsigned long genlcd_cntl2;
  38        unsigned long genlcd_cntl3;
  39};
  40
  41struct w100_gpio_regs {
  42        unsigned long init_data1;
  43        unsigned long init_data2;
  44        unsigned long gpio_dir1;
  45        unsigned long gpio_oe1;
  46        unsigned long gpio_dir2;
  47        unsigned long gpio_oe2;
  48};
  49
  50/* Optional External Memory Configuration */
  51struct w100_mem_info {
  52        unsigned long ext_cntl;
  53        unsigned long sdram_mode_reg;
  54        unsigned long ext_timing_cntl;
  55        unsigned long io_cntl;
  56        unsigned int size;
  57};
  58
  59struct w100_bm_mem_info {
  60        unsigned long ext_mem_bw;
  61        unsigned long offset;
  62        unsigned long ext_timing_ctl;
  63        unsigned long ext_cntl;
  64        unsigned long mode_reg;
  65        unsigned long io_cntl;
  66        unsigned long config;
  67};
  68
  69/* LCD Mode definition */
  70struct w100_mode {
  71        unsigned int xres;
  72        unsigned int yres;
  73        unsigned short left_margin;
  74        unsigned short right_margin;
  75        unsigned short upper_margin;
  76        unsigned short lower_margin;
  77        unsigned long crtc_ss;
  78        unsigned long crtc_ls;
  79        unsigned long crtc_gs;
  80        unsigned long crtc_vpos_gs;
  81        unsigned long crtc_rev;
  82        unsigned long crtc_dclk;
  83        unsigned long crtc_gclk;
  84        unsigned long crtc_goe;
  85        unsigned long crtc_ps1_active;
  86        char pll_freq;
  87        char fast_pll_freq;
  88        int sysclk_src;
  89        int sysclk_divider;
  90        int pixclk_src;
  91        int pixclk_divider;
  92        int pixclk_divider_rotated;
  93};
  94
  95struct w100_pll_info {
  96        uint16_t freq;  /* desired Fout for PLL (Mhz) */
  97        uint8_t M;      /* input divider */
  98        uint8_t N_int;  /* VCO multiplier */
  99        uint8_t N_fac;  /* VCO multiplier fractional part */
 100        uint8_t tfgoal;
 101        uint8_t lock_time;
 102};
 103
 104/* Initial Video mode orientation flags */
 105#define INIT_MODE_ROTATED  0x1
 106#define INIT_MODE_FLIPPED  0x2
 107
 108/*
 109 * This structure describes the machine which we are running on.
 110 * It is set by machine specific code and used in the probe routine
 111 * of drivers/video/w100fb.c
 112 */
 113struct w100fb_mach_info {
 114        /* General Platform Specific Registers */
 115        struct w100_gen_regs *regs;
 116        /* Table of modes the LCD is capable of */
 117        struct w100_mode *modelist;
 118        unsigned int num_modes;
 119        /* Hooks for any platform specific tg/lcd code (optional) */
 120        struct w100_tg_info *tg;
 121        /* External memory definition (if present) */
 122        struct w100_mem_info *mem;
 123        /* Additional External memory definition (if present) */
 124        struct w100_bm_mem_info *bm_mem;
 125        /* GPIO definitions (optional) */
 126        struct w100_gpio_regs *gpio;
 127        /* Initial Mode flags */
 128        unsigned int init_mode;
 129        /* Xtal Frequency */
 130        unsigned int xtal_freq;
 131        /* Enable Xtal input doubler (1 == enable) */
 132        unsigned int xtal_dbl;
 133};
 134
 135/* General frame buffer data structure */
 136struct w100fb_par {
 137        unsigned int chip_id;
 138        unsigned int xres;
 139        unsigned int yres;
 140        unsigned int extmem_active;
 141        unsigned int flip;
 142        unsigned int blanked;
 143        unsigned int fastpll_mode;
 144        unsigned long hsync_len;
 145        struct w100_mode *mode;
 146        struct w100_pll_info *pll_table;
 147        struct w100fb_mach_info *mach;
 148        uint32_t *saved_intmem;
 149        uint32_t *saved_extmem;
 150};
 151
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