drivers/video/s5p-fb.c

   1 /*
   2  * S5PC100 and S5PC110 LCD Controller driver.
   3  *
   4  * Author: InKi Dae <inki.dae@samsung.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  19  * MA 02111-1307 USA
  20  */
  21
  22 #include <config.h>
  23 #include <common.h>
  24 #include <version.h>
  25 #include <stdarg.h>
  26 #include <linux/types.h>
  27 #include <asm/io.h>
  28 #include <asm/arch/cpu.h>
  29 #include <lcd.h>
  30
  31 #include "s5p-fb.h"
  32 #include "opening_wvga_32.h"
  33
  34 #define PANEL_WIDTH             480
  35 #define PANEL_HEIGHT            800
  36 #define S5P_LCD_BPP             32
  37
  38 extern void tl2796_panel_power_on(void);
  39 extern void tl2796_panel_enable(void);
  40 extern void tl2796_panel_init(void);
  41
  42 int lcd_line_length;
  43 int lcd_color_fg;
  44 int lcd_color_bg;
  45
  46 void *lcd_base;
  47 void *lcd_console_address;
  48
  49 short console_col;
  50 short console_row;
  51
  52 static unsigned short makepixel565(char r, char g, char b)
  53 {
  54     return (unsigned short)(((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3));
  55 }
  56
  57 static unsigned int makepixel8888(char a, char r, char g, char b)
  58 {
  59         return (unsigned int)((a << 24) | (r << 16) | (g << 8)  | b);
  60 }
  61
  62 static void read_image16(char* pImg, int x1pos, int y1pos, int x2pos,
  63                 int y2pos, unsigned short pixel)
  64 {
  65         unsigned short *pDst = (unsigned short *)pImg;
  66         unsigned int offset_s;
  67         int i, j;
  68
  69         for(i = y1pos; i < y2pos; i++) {
  70                 for(j = x1pos; j < x2pos; j++) {
  71                         offset_s = i * PANEL_WIDTH + j;
  72                         *(pDst + offset_s) = pixel;
  73                 }
  74         }
  75 }
  76
  77 static void read_image32(char* pImg, int x1pos, int y1pos, int x2pos,
  78                 int y2pos, unsigned int pixel)
  79 {
  80         unsigned int *pDst = (unsigned int *)pImg;
  81         unsigned int offset_s;
  82         int i, j;
  83
  84         for(i = y1pos; i < y2pos; i++) {
  85                 for(j = x1pos; j < x2pos; j++) {
  86                         offset_s = i * PANEL_WIDTH + j;
  87                         *(pDst+offset_s) = pixel;
  88                 }
  89         }
  90 }
  91
  92 /* LCD Panel data */
  93 vidinfo_t panel_info = {
  94                 .vl_col         = PANEL_WIDTH,
  95                 .vl_row         = PANEL_HEIGHT,
  96                 .vl_width       = PANEL_WIDTH,
  97                 .vl_height      = PANEL_HEIGHT,
  98                 .vl_clkp        = CONFIG_SYS_HIGH,
  99                 .vl_hsp         = CONFIG_SYS_LOW,
 100                 .vl_vsp         = CONFIG_SYS_LOW,
 101                 .vl_dp          = CONFIG_SYS_HIGH,
 102                 .vl_bpix        = S5P_LCD_BPP,
 103                 .vl_lbw         = 0,
 104                 .vl_splt        = 0,
 105                 .vl_clor        = 1,
 106                 .vl_tft         = 1,
 107
 108                 .vl_hpw         = 4,
 109                 .vl_blw         = 8,
 110                 .vl_elw         = 8,
 111
 112                 .vl_vpw         = 4,
 113                 .vl_bfw         = 8,
 114                 .vl_efw         = 8,
 115 };
 116
 117 static void s5pc_lcd_init_mem(void *lcdbase, vidinfo_t *vid)
 118 {
 119         unsigned long palette_size, palette_mem_size;
 120         unsigned int fb_size;
 121
 122         fb_size = vid->vl_row * vid->vl_col * (vid->vl_bpix / 8);
 123
 124         lcd_base = lcdbase;
 125
 126         palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
 127         palette_mem_size = palette_size * sizeof(u32);
 128
 129         s5pc_fimd_lcd_init_mem((unsigned long)lcd_base, (unsigned long)fb_size, palette_size);
 130
 131         udebug("fb_size=%d, screen_base=%x, palette_size=%d, palettle_mem_size=%d\n",
 132                         fb_size, (unsigned int)lcd_base, (int)palette_size, (int)palette_mem_size);
 133 }
 134
 135 static void s5pc_gpio_setup(void)
 136 {
 137         if (cpu_is_s5pc100())
 138                 s5pc_c100_gpio_setup();
 139         else
 140                 s5pc_c110_gpio_setup();
 141 }
 142
 143 static void s5pc_lcd_init(vidinfo_t *vid)
 144 {
 145         s5pc_fimd_lcd_init(vid);
 146 }
 147
 148 static void lcd_test(void)
 149 {
 150         /* red */
 151         read_image32((char *)lcd_base, 0, 0, 480, 200,
 152                         makepixel8888(0, 255, 0, 0));
 153         /* green */
 154         read_image32((char *)lcd_base, 0, 200, 480, 400,
 155                         makepixel8888(0, 0, 255, 0));
 156         /* blue */
 157         read_image32((char *)lcd_base, 0, 400, 480, 600,
 158                         makepixel8888(0, 0, 0, 255));
 159         /* write */
 160         read_image32((char *)lcd_base, 0, 600, 480, 800,
 161                         makepixel8888(0, 255, 255, 255));
 162 }
 163
 164 void draw_bitmap(void *lcdbase, int x, int y, int w, int h, unsigned long *bmp)
 165 {
 166         int i, j, k = 0;
 167         unsigned long *fb = (unsigned  long*)lcdbase;
 168
 169         for (j = y; j < (y + h); j++) {
 170                 for (i = x; i < (w + x); i++) {
 171                         *(fb + (j * PANEL_WIDTH) + i) =
 172                             *(unsigned long *)(bmp + k);
 173                         k++;
 174                 }
 175         }
 176 }
 177
 178 static void draw_samsung_logo(void* lcdbase)
 179 {
 180         int x, y;
 181
 182         x = (PANEL_WIDTH - 138) / 2;
 183         y = (PANEL_HEIGHT - 28) / 2 - 5;
 184
 185         draw_bitmap(lcdbase, x, y, 138, 28, (unsigned long *)opening_32);
 186 }
 187
 188 static void lcd_panel_on(void)
 189 {
 190         if (cpu_is_s5pc100()) {
 191                 tl2796_c100_panel_init();
 192                 tl2796_c100_panel_power_on();
 193         } else {
 194                 tl2796_c110_panel_init();
 195                 tl2796_c110_panel_power_on();
 196         }
 197
 198         tl2796_panel_enable();
 199 }
 200
 201 void lcd_ctrl_init(void *lcdbase)
 202 {
 203         char *option;
 204
 205         s5pc_lcd_init_mem(lcdbase, &panel_info);
 206
 207         option = getenv("lcd");
 208
 209         if (strcmp(option, "test") == 0) {
 210                 memset(lcdbase, 0, PANEL_WIDTH*PANEL_HEIGHT*S5P_LCD_BPP >> 3);
 211                 lcd_test();
 212         } else {
 213                 memset(lcdbase, 0, PANEL_WIDTH*PANEL_HEIGHT*S5P_LCD_BPP >> 3);
 214                 draw_samsung_logo(lcdbase);
 215         }
 216
 217         s5pc_gpio_setup();
 218
 219         s5pc_lcd_init(&panel_info);
 220 }
 221
 222 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blud)
 223 {
 224         return;
 225 }
 226
 227 void lcd_enable(void)
 228 {
 229         lcd_panel_on();
 230 }
 231
 232 ulong calc_fbsize(void)
 233 {
 234         return s5pc_fimd_calc_fbsize();
 235 }
 236
 237 void s5pc1xxfb_test(void *lcdbase)
 238 {
 239         lcd_ctrl_init(lcdbase);
 240         lcd_enable();
 241 }