drivers/video/s5p-fb.c

   1 /*
   2  * S5PC100 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 <lcd.h>
  29
  30 #include "s5pcfb.h"
  31 #include "opening_wvga_32.h"
  32
  33 #define PANEL_WIDTH             480
  34 #define PANEL_HEIGHT            800
  35 #define S5P_LCD_BPP             32
  36
  37 extern void tl2796_panel_power_on(void);
  38 extern void tl2796_panel_enable(void);
  39 extern void tl2796_panel_init(void);
  40
  41 int lcd_line_length;
  42 int lcd_color_fg;
  43 int lcd_color_bg;
  44
  45 void *lcd_base;
  46 void *lcd_console_address;
  47
  48 short console_col;
  49 short console_row;
  50
  51 static unsigned short makepixel565(char r, char g, char b)
  52 {
  53     return (unsigned short)(((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3));
  54 }
  55
  56 static unsigned int makepixel8888(char a, char r, char g, char b)
  57 {
  58         return (unsigned int)((a << 24) | (r << 16) | (g << 8)  | b);
  59 }
  60
  61 static void read_image16(char* pImg, int x1pos, int y1pos, int x2pos,
  62                 int y2pos, unsigned short pixel)
  63 {
  64         unsigned short *pDst = (unsigned short *)pImg;
  65         unsigned int offset_s;
  66         int i, j;
  67
  68         for(i = y1pos; i < y2pos; i++) {
  69                 for(j = x1pos; j < x2pos; j++) {
  70                         offset_s = i * PANEL_WIDTH + j;
  71                         *(pDst + offset_s) = pixel;
  72                 }
  73         }
  74 }
  75
  76 static void read_image32(char* pImg, int x1pos, int y1pos, int x2pos,
  77                 int y2pos, unsigned int pixel)
  78 {
  79         unsigned int *pDst = (unsigned int *)pImg;
  80         unsigned int offset_s;
  81         int i, j;
  82
  83         for(i = y1pos; i < y2pos; i++) {
  84                 for(j = x1pos; j < x2pos; j++) {
  85                         offset_s = i * PANEL_WIDTH + j;
  86                         *(pDst+offset_s) = pixel;
  87                 }
  88         }
  89 }
  90
  91 /* LCD Panel data */
  92 vidinfo_t panel_info = {
  93                 .vl_col         = PANEL_WIDTH,
  94                 .vl_row         = PANEL_HEIGHT,
  95                 .vl_width       = PANEL_WIDTH,
  96                 .vl_height      = PANEL_HEIGHT,
  97                 .vl_clkp        = CONFIG_SYS_HIGH,
  98                 .vl_hsp         = CONFIG_SYS_LOW,
  99                 .vl_vsp         = CONFIG_SYS_LOW,
 100                 .vl_dp          = CONFIG_SYS_HIGH,
 101                 .vl_bpix        = S5P_LCD_BPP,
 102                 .vl_lbw         = 0,
 103                 .vl_splt        = 0,
 104                 .vl_clor        = 0,
 105                 .vl_tft         = 1,
 106
 107                 .vl_hpw         = 4,
 108                 .vl_blw         = 8,
 109                 .vl_elw         = 8,
 110
 111                 .vl_vpw         = 4,
 112                 .vl_bfw         = 8,
 113                 .vl_efw         = 8,
 114 };
 115
 116 static void s5pc_lcd_clock_enable(void)
 117 {
 118         s5pc_fimd_lcd_clock_enable();
 119 }
 120
 121 static void s5pc_lcd_init_mem(void *lcdbase, vidinfo_t *vid)
 122 {
 123         unsigned long palette_size, palette_mem_size;
 124         unsigned int fb_size;
 125
 126         fb_size = vid->vl_row * vid->vl_col * (vid->vl_bpix / 8);
 127
 128         lcd_base = lcdbase;
 129
 130         palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
 131         palette_mem_size = palette_size * sizeof(u32);
 132
 133         s5pc_fimd_lcd_init_mem((unsigned long)lcd_base, (unsigned long)fb_size, palette_size);
 134
 135         udebug("fb_size=%d, screen_base=%x, palette_size=%d, palettle_mem_size=%d\n",
 136                         fb_size, (unsigned int)lcd_base, (int)palette_size, (int)palette_mem_size);
 137 }
 138
 139 static void s5pc_gpio_setup(void)
 140 {
 141         s5pc_fimd_gpio_setup();
 142 }
 143
 144 static void s5pc_lcd_init(vidinfo_t *vid)
 145 {
 146         s5pc_fimd_lcd_init(vid);
 147 }
 148
 149 static void lcd_test(void)
 150 {
 151         /* red */
 152         read_image32((char *)lcd_base, 0, 0, 480, 200,
 153                         makepixel8888(0, 255, 0, 0));
 154         /* green */
 155         read_image32((char *)lcd_base, 0, 200, 480, 400,
 156                         makepixel8888(0, 0, 255, 0));
 157         /* blue */
 158         read_image32((char *)lcd_base, 0, 400, 480, 600,
 159                         makepixel8888(0, 0, 0, 255));
 160         /* write */
 161         read_image32((char *)lcd_base, 0, 600, 480, 800,
 162                         makepixel8888(0, 255, 255, 255));
 163 }
 164
 165 void draw_bitmap(void *lcdbase, int x, int y, int w, int h, unsigned long *bmp)
 166 {
 167         int i, j, k = 0;
 168         unsigned long *fb = (unsigned  long*)lcdbase;
 169
 170         for (j = y; j < (y + h); j++) {
 171                 for (i = x; i < (w + x); i++) {
 172                         *(fb + (j * PANEL_WIDTH) + i) =
 173                             *(unsigned long *)(bmp + k);
 174                         k++;
 175                 }
 176         }
 177 }
 178
 179 static void draw_samsung_logo(void* lcdbase)
 180 {
 181         int x, y;
 182
 183         x = (PANEL_WIDTH - 138) / 2;
 184         y = (PANEL_HEIGHT - 28) / 2 - 5;
 185
 186         draw_bitmap(lcdbase, x, y, 138, 28, (unsigned long *)opening_32);
 187 }
 188
 189 static void lcd_panel_on(void)
 190 {
 191         tl2796_panel_init();
 192         tl2796_panel_power_on();
 193         tl2796_panel_enable();
 194 }
 195
 196 void lcd_ctrl_init(void *lcdbase)
 197 {
 198         s5pc_lcd_clock_enable();
 199
 200         s5pc_lcd_init_mem(lcdbase, &panel_info);
 201
 202 #if defined(CONFIG_S5PC1XXFB_TEST)
 203         memset(lcdbase, 0, PANEL_WIDTH*PANEL_HEIGHT*S5P_LCD_BPP/8);
 204         lcd_test();
 205 #endif
 206 #if defined(CONFIG_S5PC1XXFB_LOGO)
 207         memset(lcdbase, 0, PANEL_WIDTH*PANEL_HEIGHT*S5P_LCD_BPP/8);
 208         draw_samsung_logo(lcdbase);
 209 #endif
 210         s5pc_gpio_setup();
 211
 212         s5pc_lcd_init(&panel_info);
 213 }
 214
 215 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blud)
 216 {
 217         return;
 218 }
 219
 220 void lcd_enable(void)
 221 {
 222         lcd_panel_on();
 223 }
 224
 225 ulong calc_fbsize(void)
 226 {
 227         return s5pc_fimd_calc_fbsize();
 228 }
 229
 230 void s5pc1xxfb_test(void *lcdbase)
 231 {
 232         lcd_ctrl_init(lcdbase);
 233         lcd_enable();
 234 }