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   1 /*
   2  * linux/drivers/video/sa1100fb.h
   3  *    -- StrongARM 1100 LCD Controller Frame Buffer Device
   4  *
   5  *  Copyright (C) 1999 Eric A. Thomas
   6  *   Based on acornfb.c Copyright (C) Russell King.
   7  *
   8  * This file is subject to the terms and conditions of the GNU General Public
   9  * License.  See the file COPYING in the main directory of this archive
  10  * for more details.
  11  */
  12
  13 /*
  14  * These are the bitfields for each
  15  * display depth that we support.
  16  */
  17 struct sa1100fb_rgb {
  18         struct fb_bitfield      red;
  19         struct fb_bitfield      green;
  20         struct fb_bitfield      blue;
  21         struct fb_bitfield      transp;
  22 };
  23
  24 /*
  25  * This structure describes the machine which we are running on.
  26  */
  27 struct sa1100fb_mach_info {
  28         u_long          pixclock;
  29
  30         u_short         xres;
  31         u_short         yres;
  32
  33         u_char          bpp;
  34         u_char          hsync_len;
  35         u_char          left_margin;
  36         u_char          right_margin;
  37
  38         u_char          vsync_len;
  39         u_char          upper_margin;
  40         u_char          lower_margin;
  41         u_char          sync;
  42
  43         u_int           cmap_greyscale:1,
  44                         cmap_inverse:1,
  45                         cmap_static:1,
  46                         unused:29;
  47
  48         u_int           lccr0;
  49         u_int           lccr3;
  50 };
  51
  52 /* Shadows for LCD controller registers */
  53 struct sa1100fb_lcd_reg {
  54         unsigned long lccr0;
  55         unsigned long lccr1;
  56         unsigned long lccr2;
  57         unsigned long lccr3;
  58 };
  59
  60 #define RGB_8   (0)
  61 #define RGB_16  (1)
  62 #define NR_RGB  2
  63
  64 struct sa1100fb_info {
  65         struct fb_info          fb;
  66         struct device           *dev;
  67         struct sa1100fb_rgb     *rgb[NR_RGB];
  68
  69         u_int                   max_bpp;
  70         u_int                   max_xres;
  71         u_int                   max_yres;
  72
  73         /*
  74          * These are the addresses we mapped
  75          * the framebuffer memory region to.
  76          */
  77         dma_addr_t              map_dma;
  78         u_char *                map_cpu;
  79         u_int                   map_size;
  80
  81         u_char *                screen_cpu;
  82         dma_addr_t              screen_dma;
  83         u16 *                   palette_cpu;
  84         dma_addr_t              palette_dma;
  85         u_int                   palette_size;
  86
  87         dma_addr_t              dbar1;
  88         dma_addr_t              dbar2;
  89
  90         u_int                   lccr0;
  91         u_int                   lccr3;
  92         u_int                   cmap_inverse:1,
  93                                 cmap_static:1,
  94                                 unused:30;
  95
  96         u_int                   reg_lccr0;
  97         u_int                   reg_lccr1;
  98         u_int                   reg_lccr2;
  99         u_int                   reg_lccr3;
 100
 101         volatile u_char         state;
 102         volatile u_char         task_state;
 103         struct semaphore        ctrlr_sem;
 104         wait_queue_head_t       ctrlr_wait;
 105         struct work_struct      task;
 106
 107 #ifdef CONFIG_CPU_FREQ
 108         struct notifier_block   freq_transition;
 109         struct notifier_block   freq_policy;
 110 #endif
 111 };
 112
 113 #define TO_INF(ptr,member)      container_of(ptr,struct sa1100fb_info,member)
 114
 115 #define SA1100_PALETTE_MODE_VAL(bpp)    (((bpp) & 0x018) << 9)
 116
 117 /*
 118  * These are the actions for set_ctrlr_state
 119  */
 120 #define C_DISABLE               (0)
 121 #define C_ENABLE                (1)
 122 #define C_DISABLE_CLKCHANGE     (2)
 123 #define C_ENABLE_CLKCHANGE      (3)
 124 #define C_REENABLE              (4)
 125 #define C_DISABLE_PM            (5)
 126 #define C_ENABLE_PM             (6)
 127 #define C_STARTUP               (7)
 128
 129 #define SA1100_NAME     "SA1100"
 130
 131 /*
 132  *  Debug macros
 133  */
 134 #if DEBUG
 135 #  define DPRINTK(fmt, args...) printk("%s: " fmt, __func__ , ## args)
 136 #else
 137 #  define DPRINTK(fmt, args...)
 138 #endif
 139
 140 /*
 141  * Minimum X and Y resolutions
 142  */
 143 #define MIN_XRES        64
 144 #define MIN_YRES        64
 145