drivers/video/sa1100fb.h

   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 #define RGB_4   0
  14 #define RGB_8   1
  15 #define RGB_16  2
  16 #define NR_RGB  3
  17
  18 /* These are the bitfields for each display depth that we support. */
  19 struct sa1100fb_rgb {
  20         struct fb_bitfield      red;
  21         struct fb_bitfield      green;
  22         struct fb_bitfield      blue;
  23         struct fb_bitfield      transp;
  24 };
  25
  26 /* This structure describes the machine which we are running on. */
  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         /* Overrides for the default RGB maps */
  52         const struct sa1100fb_rgb *rgb[NR_RGB];
  53 };
  54
  55 /* Shadows for LCD controller registers */
  56 struct sa1100fb_lcd_reg {
  57         unsigned long lccr0;
  58         unsigned long lccr1;
  59         unsigned long lccr2;
  60         unsigned long lccr3;
  61 };
  62
  63 struct sa1100fb_info {
  64         struct fb_info          fb;
  65         struct device           *dev;
  66         const struct sa1100fb_rgb *rgb[NR_RGB];
  67
  68         u_int                   max_bpp;
  69         u_int                   max_xres;
  70         u_int                   max_yres;
  71
  72         /*
  73          * These are the addresses we mapped
  74          * the framebuffer memory region to.
  75          */
  76         dma_addr_t              map_dma;
  77         u_char *                map_cpu;
  78         u_int                   map_size;
  79
  80         u_char *                screen_cpu;
  81         dma_addr_t              screen_dma;
  82         u16 *                   palette_cpu;
  83         dma_addr_t              palette_dma;
  84         u_int                   palette_size;
  85
  86         dma_addr_t              dbar1;
  87         dma_addr_t              dbar2;
  88
  89         u_int                   lccr0;
  90         u_int                   lccr3;
  91         u_int                   cmap_inverse:1,
  92                                 cmap_static:1,
  93                                 unused:30;
  94
  95         u_int                   reg_lccr0;
  96         u_int                   reg_lccr1;
  97         u_int                   reg_lccr2;
  98         u_int                   reg_lccr3;
  99
 100         volatile u_char         state;
 101         volatile u_char         task_state;
 102         struct mutex            ctrlr_lock;
 103         wait_queue_head_t       ctrlr_wait;
 104         struct work_struct      task;
 105
 106 #ifdef CONFIG_CPU_FREQ
 107         struct notifier_block   freq_transition;
 108         struct notifier_block   freq_policy;
 109 #endif
 110 };
 111
 112 #define TO_INF(ptr,member)      container_of(ptr,struct sa1100fb_info,member)
 113
 114 #define SA1100_PALETTE_MODE_VAL(bpp)    (((bpp) & 0x018) << 9)
 115
 116 /*
 117  * These are the actions for set_ctrlr_state
 118  */
 119 #define C_DISABLE               (0)
 120 #define C_ENABLE                (1)
 121 #define C_DISABLE_CLKCHANGE     (2)
 122 #define C_ENABLE_CLKCHANGE      (3)
 123 #define C_REENABLE              (4)
 124 #define C_DISABLE_PM            (5)
 125 #define C_ENABLE_PM             (6)
 126 #define C_STARTUP               (7)
 127
 128 #define SA1100_NAME     "SA1100"
 129
 130 /*
 131  * Minimum X and Y resolutions
 132  */
 133 #define MIN_XRES        64
 134 #define MIN_YRES        64
 135